diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index dda2ed164..7e648d624 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -58,6 +58,15 @@ jobs: if: ${{ !cancelled() && steps.swift-tests.outcome != 'skipped' }} run: swift test --skip-build --filter "$AUTHORIZATION_TEST_SUITES" + # The same Swift Testing suite on a ONE-thread cooperative pool. Anything that blocks a pool + # thread (a sync read, a semaphore, a `Task.detached` around engine I/O) starves every other + # test here deterministically, instead of a different victim timing out on some later run of + # the 3-core runner. See docs/architecture.md, "Blocking work and the cooperative pool". + - name: swift test (one-thread cooperative pool) + env: + LIBDISPATCH_COOPERATIVE_POOL_STRICT: "1" + run: swift test --skip-build --disable-xctest + - name: Software VOD packet-cache regressions run: | bash Scripts/test-software-packet-coverage.sh diff --git a/CHANGELOG.md b/CHANGELOG.md index 96d42cc85..871eab9cb 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -12,15 +12,11 @@ the public-API contract. ### Changed -- The TrueHD object decoder behind `objectAudioRendering` resolves from [LibTrueHD](https://github.com/superuser404notfound/LibTrueHD) 2.0.0, SiloObjectAudio's new name after its transfer (AE#731). The package is `LibTrueHD` and the product and module are `TrueHD`; the decoder and its C API are unchanged, and the xcframework is rebuilt from the same source. - CI runs the HLS, subtitle/resource authorization and live trust-evaluator suites in a separate test process so unrelated blocking tests cannot delay their resolvers. All tests and existing deadlines remain enforced. - Once a redirect chain has reached HTTPS, the engine drops credential headers (`Authorization`, `Cookie`, Emby/Jellyfin tokens) from every later HTTP hop, including headers returned by `HTTPRequestAuthorization`. A provider that authorizes every URL can no longer send its credentials in cleartext after a downgrade. The HTTP hop still runs, so anonymous redirects keep working, and an origin the host configured as HTTP still receives provider credentials. ### Added -- The session log places missing TrueHD Atmos heights or LFE. With `objectAudioRendering` the bridge logs each bed channel's RMS and peak level, the window's timeline position and the active and elevated object counts, after the first 5 s, every 30 s, and when the stream seeks, ends or stops; the engine logs the master's audio `CODECS` and rendition `CHANNELS`; and the audio route line adds `AVAudioSession.renderingMode`, multichannel-content support, each port's channel labels with a height count and its spatial-audio flag, and is also written when the rendering mode or spatial capability changes. Route lines name ports by type and no longer carry `portName`, which for AirPods, Bluetooth and AirPlay is the user's own name for the device. A TrueHD Atmos track loaded with object rendering off says so. The readyToPlay track dump adds the item's `allowedAudioSpatializationFormats`. See [formats.md › TrueHD Atmos (object rendering)](docs/formats.md#truehd-atmos-object-rendering). -- `LoadOptions.objectAudioRendering` keeps the height channels and object positioning of TrueHD Atmos by rendering its objects into a speaker bed; it is a lossy conversion, not passthrough of the original stream. With `.apac(SpatialSpeakerLayout)` a TrueHD track FFmpeg marks as Atmos is decoded (beds, objects and their metadata), rendered into the chosen 5.1.2 to 9.1.6 speaker bed and delivered as Apple Positional Audio (`CODECS="apac.31.LL"`), which tvOS sends to an Atmos receiver as Dolby MAT. Lossy (320 kbps per bed channel) in place of the lossless 7.1 channel presentation, so it is opt-in; requires OS 26 and falls back to `audioBridgeMode` otherwise. See [formats.md › TrueHD Atmos (object rendering)](docs/formats.md#truehd-atmos-object-rendering). -- `aetherctl serve --atmos-bed ` and `serve --audio-index ` serve a TrueHD Atmos track through that path. - Live HTTPS-to-HTTP redirect tests cover provider refusal, anonymous redirects, static-header stripping and the downgrade credential filter. - `ExternalSubtitleTrack.httpRequestAuthorization` supplies refreshable headers for primary/secondary sidecars and native subtitle stores without changing registered track IDs or rendition mappings. Authorized container decoding retains AVIO streaming and range access. - `HTTPRequestAuthorization.data(from:maximumBytes:)` fetches raw auxiliary resources such as font bundles with a caller-supplied byte limit and a whole-transfer deadline, reusing the relay's redirect, authorization, retry, cancellation and TLS policy. @@ -30,20 +26,24 @@ the public-API contract. ### Fixed +- **A live GOP longer than the sealed target duration no longer breaks the playlist.** RFC 8216 keeps + `TARGETDURATION` fixed for a playlist's life, so a later segment above it made the playlist invalid + for AVPlayer (-12642). The engine now retires that playlist URL with its original target and an + end index before the long segment, and serves the same cache under a new `live-N/` namespace with + a fresh seal; the consumer item swaps to it in place, keeping source, cache, position (also behind + live) and play/pause intent. A media playlist failure no longer counts as evidence against the HDR + master (#748, thanks @yucelokan). - External subtitles on a remote HLS source no longer appear early when the origin's media timestamps do not start at the playlist's time 0. The WebVTT renditions the engine injects (#316) carried no `X-TIMESTAMP-MAP`, so AVPlayer pinned cue time 0 to timestamp 0, and an ffmpeg MPEG-TS transcode cut with `-copyts -max_delay 5000000` showed every cue 10 s early. The engine now reads the first media timestamp of the segment the load opens on, off the load path, and serves the renditions with a matching `X-TIMESTAMP-MAP`; an origin already on its playlist timeline, one whose segment starts before its playlist slot (a transcode restarted at the previous keyframe, which AE#616 corrects), or one it cannot read, keeps the plain WebVTT. - After a seek or a resume into densely typeset ASS (signs re-timed on every frame, several hundred events a second), embedded subtitles stayed missing until the passage ended. The drain decoded at most 256 packets per 0.5 s tick from 15 s behind the playhead, slower than such a passage plays, so it never caught up. A text track's tick now decodes through the playhead plus 12 s whatever the cap (`subtitleDrainUrgentLeadSeconds`, at most `subtitleDrainMaxCatchUpPacketsPerTick` packets); bitmap and teletext tracks keep the steady cap. Text cues from one tick are merged into the retained cues in one pass instead of one insert each, so a large batch after a seek back stays linear. - The #362 harvest-hole hold no longer stops the drain at the pump's edge when the forward prefetch has already read past it. Re-harvested packets take a fresh sequence, so the pump re-reading behind the prefetch broke the harvest order at whatever position it had reached, and that moving seam renewed the hold every tick and kept the drain a few seconds ahead of the playhead instead of its 60 s lead. An order break over a span that the prefetch's current run has read since its first packet, and that the store still holds, is a seam, not a hole. Otherwise the hold works as before. - - Software video now presents the selected frame when seeking while paused. It decodes through preroll without starting the clock or audio, displays the winning seek's frame, and stays paused instead of retaining the previous picture until Play. - The software video decoder no longer runs more than 16 frame threads. It used one per core, and each frame thread holds back one decoded frame, so a 32-core Mac waited for 31 frames before showing the first one after a load or seek (about 3 s at 10 fps). FFmpeg also warns above 16 threads. Hosts with 16 or fewer cores keep their current thread count. -- TrueHD Atmos rendered to APAC (`LoadOptions.objectAudioRendering`) no longer plays 42.7 ms ahead of the video. The bridge dropped the encoder's 2048 frames of priming and stamped the first content packet on the source position, but AVFoundation presents an APAC packet's audio 2048 frames before its timestamp, so every session ran early, at load and after every seek. The priming packets now stay in the stream and take the source position's timestamp. - Authorized native HLS uses the engine relay from the initial load, without forwarding origin credentials to the loopback asset. Optional subtitle playlist preparation shares the authorizer and has a bounded deadline across redirects and refreshes. - Static-header HLS redirects apply the shared credential policy, including Emby and MediaBrowser token headers, before contacting another origin. - Session option corrections recognize `httpRequestAuthorization` and external subtitle provider replacements by identity. - Sidecar decoding runs on a dispatch worker instead of a cooperative-pool thread, so concurrent authorized decodes cannot starve the async resolvers their requests wait on. - A pause made through the engine while the premature-end recovery re-seeks (AE#287) is kept. The recovery called `play()` after its seek whatever the play intent said, so the title started again. - An external ASS sidecar the host draws itself (`preserveASSMarkup`) on the `nativeRemoteHLS` bypass keeps its plain rendition selected behind a suppressing legible output instead of deselecting it. AE#616 measures `sourceTime` off the selected injected rendition, so the deselect left the clock a styled-ASS overlay draws from on item time, 1 to 8 s ahead of the picture after a seek on a transcode restarted at an earlier keyframe. The hidden rendition is selected only once its whole-program WebVTT has been extracted and playback is running, because AVPlayer fetches and buffers a selected rendition and AE#616 measures only presented lines. Turning subtitles off takes it down immediately. -- TrueHD Atmos rendered to APAC reports a decoder that produces nothing (`.audioBridgeProducedNoOutput` on VOD), as the channel bridges do since AE#641, instead of playing the picture over silence. Its threshold is 1200 packets, a second of TrueHD, not the channel bridge's 64: after a start or resume mid-stream the object decoder waits for the next major sync, measured at up to 102 access units on Dolby's Unfold demo, and at 64 a resumed session was reported dead and went to `.error` while it played, ignoring every later seek. - Playlist preflight through a refreshable `HTTPRequestAuthorization` keeps the 2 MB playlist cap the static-header preflight has (audit NAT-5), and relayed fetches use upstream's per-fetch pending cap (audit NET-107) in place of the fork's high-water wait. - A 206 whose `Content-Range` total is zero or negative no longer crashes an HTTP source as it opens. `Int64` parses a signed total, so `bytes 0-0/-9223372036854775808` reached `total - 1` with `Int64.min` and trapped. - Below 1x, or after a pause in the last quarter second, the audio-only host parks its clock when it reaches the last sample. It parked after the tail's length in wall time, which cut up to 0.125 s at 0.5x. @@ -62,6 +62,423 @@ the public-API contract. - Rapid audio-track selections coalesce into serialized rebuilds. Stop/load invalidate queued work, and play/pause commands received during a rebuild supply its final transport intent. Native handover retains the old item until replacement unless media services were reset. - A `play()` or `pause()` that arrives while any session-preserving rebuild runs (an audio or disc-title switch, `reloadAtCurrentPosition()`, an engine-raised rebuild) now decides the transport it comes back in; before, only an audio pick honoured it and the others came back in the state they started from. +## [7.36.0] - 2026-10-13 + +### Added + +- **DTS:X keeps its heights too.** Apple TV cannot bitstream DTS-HD either, so the bridge decoded a + DTS:X track's compatible 7.1, where the encoder had folded its four heights (and any objects) into + the floor channels. `LoadOptions.objectAudioRendering = .apac(layout)` now sends DTS-HD Master Audio + through the new [LibDTSX](https://github.com/superuser404notfound/LibDTSX) dependency (the `dca` crate behind + a C API, packaged like LibTrueHD), which removes those folds and returns the bed, the fixed heights + and the objects of the alternate presentations with their positions in LibTrueHD's room + coordinates; the same renderer, limiter and APAC encoder then deliver it. FFmpeg names only two of + DTS:X's markers and labels some DTS:X plain "DTS-HD MA", so every 48 kHz DTS-HD MA track is offered: + LibDTSX decides on the track's first three frames, which the engine reads through the demuxer's + peek where the first producer starts (on a resume too, so no head read is thrown away), capped at + 512 packets or 24 MiB, so a refusal costs no I/O and keeps `audioBridgeMode` (*Arrival*, plain + DTS-HD MA, was refused on its first frame). Rendered into 7.1.4, *8 Mile*, *The Bourne + Identity* and the DTS:X Object Emulator demo (bed plus four heights) put every channel on its own + speaker, bit for bit what SpatialAudioBridge's DTS:X renderer gives. *Independence Day* (FFmpeg: + "DTS:X IMAX") carries two static objects in front, and a D4 trailer five moving ones; their + sound points where SpatialAudioBridge puts it within 0.4° and 2.3° (90th percentile of 200 ms + windows), the floor channels identical but for rounding and the ceiling within 0.2 points of its + share (measured before #742 moved the top speakers in from the corners). The first two DTS-HD + frames after a start or seek only rebuild the decoder's history, so the audio starts 21 ms later: + entered mid-stream, the first frame otherwise decodes distorted. With the option + on, the automatic audio pick also prefers a track FFmpeg labels DTS:X within its language. The + alternate presentations are experimental in `dca` and here (#744, #755, thanks @kristofferR, and + @andreencar for the review that caught a timeline drift after repeated damage, fixed in LibDTSX 1.0.1). + +### Changed + +- **Below OS 26 the automatic audio pick no longer prefers a TrueHD Atmos track** with + `objectAudioRendering` on. There is no APAC encoder there, so the preferred track only ever played + as its 7.1 bed; the default track now keeps its place, as with rendering off (#755). +- **LibTrueHD 2.3.0: the TrueHD object decode takes about a third less time again.** The `truehd` + crate is pinned to harletty's speed work (blocks decoded in place, table-driven Huffman codes, + prediction filters for several channels side by side, whole-block matrices), which includes + truehdd#42 from 2.2.0, with byte-identical output. Unfold through the decoder: 0.98 s to 0.60 s + (M1). The APAC encoder stays the slower half of the bridge, so the whole decode-and-encode gains + about 10% (6.5x to 7.2x real time in a debug build); the rest is a lighter decode thread (#731). + +### Fixed + +- **A live source that repeats itself after a reconnect is not played twice (#747, thanks @yucelokan).** + Packets a reconnect delivers again are now recognised by exact identity on both tracks and dropped + before the muxer, the recording, the software clock and the DVR window see them, and a damaged + outgoing picture at that seam is held until the intact copy from the replay replaces it. Before, + the partial picture and its replacement were both muxed, and native decoding broke until the next + IDR. An ambiguous seam keeps every packet. A verified replay no longer goes straight to the host: + the engine reopens the source itself, keeping its cache and history, and only when that runs out + does the host hear `liveSourceReset` as before. A host that sets + `LoadOptions.hostRetriesExhaustedLiveReplay` gets `liveSourceReplayExhausted` instead and resumes + with `retryLiveSourceRecovery()` without losing the DVR window. New opt-in levers, both off by + default: `nativeVideoFrameDiagnostics` samples decoded output on SDR native playback, and + `nativeVideoFrameRecovery` nudges, then replaces in place, an item whose picture stopped while + its clock runs on. + +- **A reader waiting for an origin slot gets it when the request ends, not when its owner wakes (#746, + thanks @yucelokan).** Finite requests return their slot from the completion callback, after the + refusal (if any) is on the books, and the AVIO, held-transport and prewarm sessions deliver on + their own user-initiated queues instead of an implicit one that inherits a utility caller. A size + probe answered 429 without `Retry-After` now arms the backoff ladder instead of a zero quiet period. +- **A custom source that fails its probe says why (#745, thanks @yucelokan).** `.customSourceProbeFailed` now carries + the probe error's `underlyingDomain` and `underlyingCode` in `errorInfo`, set before the terminal + `.error` state, where it used to arrive with nothing but the generic message. +- **Video comes back after a screen lock on the software path (#739, thanks @ijuniorfu).** On iOS a + screen lock invalidates the VideoToolbox session, and the decoder only logged the resulting + `kVTInvalidSessionErr` (-12903) and kept feeding the dead session, so the picture never returned. A + source without audio raced to EOF in the background, since audio-only mode had nothing to pace it. + The lost session is now rebuilt from its stored format description and resumes at the next + keyframe, repositioned to the playhead in the foreground and owed to the foreground return in the + background. A software session that renders no audio is released like a paused one instead of + entering audio-only mode. `aetherctl bgaudio --lose-session` reproduces both cases. +- **A playlist served without a length plays (#733).** A playlist endpoint answering 200 with no + Content-Length (chunked, typical for a dynamic `/api/playlist?id=` handler) goes forward-only at the + open, and the `#EXTM3U` check only read the window that path leaves empty, so FFmpeg got the m3u8 + and the load ended in "Invalid data found when processing input". The same classification now runs + on the forward-only stream's first bytes, and the playlist reaches the HLS ingest. + +- **A host with its own Objective-C and C++ links again (#752).** Since 7.34.0 LibTrueHD and LibDovi + each brought a `rust_eh_personality`, and with the host's `__objc_personality_v0` and + `__gxx_personality_v0` that made four personality routines, one more than compact unwind encodes + per image, so `ld` refused the app (Syravo with KSCrash, on every platform). LibTrueHD 2.2.1 + exports its copy weak, so the linker keeps one. A patch, so 7.34.1 and later pick it up on + resolve; 7.34.0 pins LibTrueHD 2.1.x and stays affected. +- **Objects play from the first frame after a seek in TrueHD Atmos rendered to APAC.** Decoding + resumes at the next major sync, and the first object metadata follows up to 32 ms later; until it + arrived, every object rendered silent, so after each seek the APAC carried the LFE alone (21 to + 24 ms on Nature's Fury). The decoder now holds those blocks and releases them with the first + metadata's state applied from their first frame (`ObjectMetadataHold`), waiting at most 100 ms. + A segment cut releases what is still held as it is, so the hold never moves audio into the next + segment. +- **The surround-downmix warning no longer fires on 5.1 inside a Dolby MAT carrier.** After an APAC + session tvOS keeps the HDMI output in the 2-channel MAT carrier it negotiated, so a 5.1 `ec-3` track + played next read `output=2` and the log claimed a downmix while the sink played the 5.1 intact (Apple + TV 4K into a Sonos, `max=32`). The warning now reads the sink's advertised maximum, and fires only + when that is below the track's channel count. + +- **TrueHD Atmos rendered to APAC lights Atmos on sinks that need a nudge.** Some sinks show + Dolby Atmos for APAC on their own; a Samsung HW-Q990C fed by an Apple TV 4K (tvOS 27.2) never + did. While an APAC session plays on tvOS, the engine now loops a silent E-AC-3 stream signalled + as Dolby Atmos beside its player (`AtmosOutputActivator`), which brought that soundbar to Atmos + before the first frame and kept it there across a seek. The 2 s stream is digital silence + written from the specifications by `Scripts/make-silent-atmos.swift`. A media services reset (#597) + drops the activator's player along with the engine's, so the next session builds a fresh one. + +- **A DVD-Video image without an ISO9660 bridge volume plays its film, not its menu.** DVD recognition + only looked for `VIDEO_TS` through ISO9660, so an image that is UDF only (sector 16 starts UDF's BEA01 + directly) went down the Blu-ray branch, found no `BDMV`, and was opened raw: the session played the + first VOB, which is the menu. *The Little Chinese Seamstress* reported 7.9 s and played only its menu; + it now reports 6364 s, as its IFO declares, and plays the title set. Such an image now has `VIDEO_TS` + listed through UDF once no `BDMV` is found, and the title is built as from ISO9660. A file recorded as + runs that do not continue each other is left out of the title. The UDF anchor is still read once, so a + source that is no disc costs the same probe reads as before. `aetherctl disc-inspect` reports such an + image as `dvdVideo`. + +- **A seek lands on a DVD title, and the playhead holds across cells that restart their timestamps.** + A title's VOBs are read as one MPEG-PS, and many discs restart the presentation timestamps at a cell + boundary: *The Little Chinese Seamstress* puts its cell 7, at 3569 s of title time, at about 147 s. A + seek was a timestamp search over the whole title, which on such discs, and on *He's a Woman, She's a + Man* as well, read straight to the end of the title: a 2000 s seek ended the session. The main PGC's + cells are now folded onto the title timeline with the clip fold Blu-ray uses (AE#105), each cell's + timestamp base measured from its navigation packs (the VOBU start PTS less the cell's elapsed time), + and a seek goes to the VOBU's byte through the title's VTS time map. Both discs then landed every + seek (2000, 3560, 4500 and 300 s; 2000, 4000 and 500 s) and played on, across cell 7 without a jump + in the playhead. A title whose cells do not follow each other, that starts past its first sector, or + that has an angle block, or a disc without a time map, reads and seeks as before. + +- **Dolby Vision Profile 7 keeps its RPU on a display without Dolby Vision.** The P7 -> 8.1 conversion + ran only when the display claimed Dolby Vision; everywhere else the container record was stripped and + the HDR10 base layer played on its static metadata alone, with the enhancement-layer NAL units still in + every segment. That covered every HDR10 and SDR panel and every Mac, where Dolby Vision is never + observed and only a host assertion claims it. It was the Profile 8.1 non-DV route of tvOS 26.0, which + Profile 8.1 left behind once its `-11868` stopped reproducing (AE#493). Profile 7 is now converted on + every display and served exactly as Profile 8.1 is: `hvc1` + `dvvC` + `SUPPLEMENTAL-CODECS`, so where + AVPlayer maps the picture itself (an SDR panel, a Mac) it maps from the RPU, the segments no longer + carry an enhancement layer nothing decodes, and `forceDolbyVisionOnNonDVDisplay` applies to Profile 7 + too. `dolbyVisionConversion` reads `.profile7ToProfile81` on every such session. + `dolbyVisionHandling = .baseLayerOnly` is unchanged. Found by dotModded. + +- **Ceiling speakers sit where TS 103 448 puts them.** The renderer placed the top speakers in the + room's corners, so overhead content near the front leaked backwards and the whole mix sat higher + than Apple's own render of the same title. They now sit a quarter of the room in from each wall. + Against Apple's render of the matching DD+ Atmos, energy-weighted: Black Hawk Down 3.3° → 0.8° + direction error, +3.2° → +0.4° elevation bias, +4.1 → +0.6 points top-share; a single overhead + helicopter 6.3° → 0.2°; Dolby's Amaze 4.7° → 3.3°. + +- **A 5.1 bed's surrounds sit where TS 103 448 puts them.** The object renderer placed the 5.1.2 and + 5.1.4 surrounds in the rear corners; table A.3 puts them halfway down the side walls, where a 7.1 bed + has its sides. An object on the side wall halfway back now plays from the surround alone instead of + half from the front, and one a quarter of the way back puts 50% of its power in the surround + instead of 15%. The no-back and no-sides zone masks no longer take a 5.1 layout's surrounds away, + which table 4 does not do on a 3/2 floor; screen-only still does. 7.1 and 9.1 layouts are unchanged. + +## [7.35.1] - 2026-10-12 + +### Fixed + +- **A seek lands on a Blu-ray title whose clips run their clocks over the same range.** A seek over a + disc title was a timestamp binary search across the concatenated clips, and when the clips each start + their clock at the same value (two clips both from 11.6 s, or the 600 s origin many discs use) the + search cannot tell them apart. On *Kotonoha no Niwa* (two clips) the first seek ended the session with + `Demuxer: read failed`; on *Himalaya* and *The Road* (three clips) every seek stalled and the playhead + stood still. Recognition (of an image and of a `BDMV` folder) now also reads each clip's `BDMV/CLIPINF/*.clpi`, and a seek takes the + folded title time to its clip, the clip's `in_time` to the clip's own clock, and the EP map to the + keyframe's byte: one byte reposition. All three discs then landed every seek (1500, 3000 and 200 s) + and played on. A single-clip title seeks the same way, with fewer requests (125 instead of 173 for a + start and three seeks on a remote ISO). A title with any clip lacking a readable EP map seeks by + timestamp as before. + +- **A live session no longer crashes the app when its segment muxer is torn down.** The teardown flush + of the fMP4 segment muxer ran while packets were still queued in libavformat's interleaver. movenc + takes the first queued packet as the track's end, and when `check_pkt` had clamped the written samples + past it (a sample declaring a duration beyond its successor), `get_cluster_duration` hit + `av_assert0(next_dts >= 0)` and aborted the whole process on the `HLSSegmentProducer.pump` thread + (reported from an IPTV app, `Assertion next_dts >= 0 failed at libavformat/movenc.c:1247`). The + teardown now drains the interleaver first, as the segment cut already did, and FFmpegBuild 3.7.1 + patches movenc to skip such a packet instead of aborting, which also covers a drain cut short by a + write error. `MovencFragmentEndTests` reproduces the abort in a child process; each half alone keeps + it from happening. + +## [7.35.0] - 2026-10-12 + +### Added + +- **A Blu-ray ripped as a `BDMV` folder plays over HTTP.** A host hands the folder to `load(source: .custom(reader))` + as a `DiscDirectoryReader`, or as the ready-made `HTTPDiscDirectoryReader` with one URL per file, and + the engine recognizes it the way it recognizes a Blu-ray ISO: the same bounded playlist scan and title + selection, the selected title's clips concatenated in playlist order, and the same multi-clip timeline, + chapters and track languages. The origin serves plain files over `Range` and never remuxes the disc. An + optional `preferredPlaylist` names the main title, so only that playlist is read. A controlled probe + (`limits` or `cancellation`) does not recognize a folder yet. +- **`heldSourceConnection` now covers the HEVC-in-MPEG-TS HLS VOD ingest: one persistent HTTP/1.1 + connection, reused across segments.** Some origins refuse a segment over h2 and over freshly + opened connections, but serve consecutive requests on one keep-alive connection. With the option + set, the AE#268 ingest sends its playlist, key and segment requests over one HTTP/1.1 connection + per origin, one segment at a time, and the carriage probe downloads the first segment whole so + the producer does not fetch it twice. A new connection opens only when the origin closes one, the + origin changes, or a seek abandons a body mid-transfer; a reused connection the origin dropped + while idle is retried once on a fresh one. Every open and close is logged with its protocol and + request count. TLS validation, the redirect header policy and the body limits are unchanged, and + sources without the option keep their transport (#732). + +### Fixed + +- **A disc title whose clips restart their clock declares a bandwidth AVPlayer can choose.** libavformat + divides the source size by the duration it reads off the timestamps, which over such a title is as + wrong as the duration itself (AE#105). A 6537 s UHD title whose two clips both start at 11.6 s probed + as 388 s and declared `BANDWIDTH=2253434656`; AVPlayer never picked the variant and waited with no + item to play. Whenever libavformat produces a rate for a disc title, the rate is now the title's size + over its playlist duration (66.9 Mbit/s for that title, which then started playing). A title + libavformat gives no rate for, which is what a remote ISO opened by URL gets, keeps the over-declared + fallback as before. +- **The first readyToPlay after launch no longer freezes the host's main thread for seconds.** Since the + 26 SDKs `AVAsset.load` runs on the caller's actor, and the native host read every track's format + descriptions on the main actor. The first audio format description a process builds loads the audio + DSP stack through dyld, measured at 3.8 s on an Apple TV 4K, so the host UI stalled while the video + kept playing. Those reads now run off the main actor; the logged and published values are unchanged + (#735). + +## [7.34.1] - 2026-10-11 + +### Changed + +- **TrueHD Atmos to APAC encodes while it decodes.** The object decoder and Apple's APAC encoder + each take about a core and ran one after the other on the producer thread, which is what a seek + past the produced range waited for. The bridge now hands each rendered chunk to a serial encode + queue and decodes the next one meanwhile. The producer waits for the queue only where its + segment cutter or open muxer is about to move, so every segment carries the same audio packets + as before, byte for byte, on pts-routed and sequential origins alike (#731). +- **LibTrueHD 2.2.0: the TrueHD object decode is about 30% faster.** Its `truehd` crate copied + 160-row sample buffers for blocks that are usually 40 samples; truehdd#42 sizes them to the + samples they hold, with byte-identical output. Together with the encode queue above, Dolby's + Unfold demo now takes 1.40 s instead of 2.73 s (M1, release), 19x real time instead of 10x, + which is what a seek past the produced range waits for (#731). + +## [7.34.0] - 2026-10-11 + +### Added + +- **TrueHD Atmos keeps its heights.** Apple TV cannot bitstream TrueHD, so the bridge decoded its + 7.1 presentation and every height and object position was gone. `LoadOptions.objectAudioRendering + = .apac(layout)` decodes the Atmos object presentation (bed, up to 15 objects and their metadata, + through the new [LibTrueHD](https://github.com/superuser404notfound/LibTrueHD) dependency), renders + it into the host's speaker bed (5.1.2 to 9.1.6) with an allocentric constant-power panner, and + delivers Apple Positional Audio, which tvOS sends to an Atmos receiver as Dolby MAT and iOS plays as + Spatial Audio. A linked peak limiter keeps the bed under full scale, because the APAC encoder carries + anything over it through (Dolby's Unfold demo reaches -1.2 dB of reduction). Opt-in and lossy, at + 320 kbps per bed channel in place of the lossless 7.1; only TrueHD that FFmpeg marks Atmos, at + 48 kHz, on OS 26+, and any failure to start falls back to `audioBridgeMode`. With the option on, the automatic + audio pick prefers TrueHD Atmos over the other tracks of the same language, never across one. + `aetherctl serve --atmos-bed 7.1.4 --audio-index N` serves it. Ported from Silo's fork, which offered its + implementation as the reference (Silo-Server/AetherEngine#6, #8, #17). (#731) + +## [7.33.2] - 2026-10-09 + +### Fixed + +- **A speed set while paused no longer starts playback.** `setRate(_:)` with a non-zero rate went + straight to the transport host, and on the native paths that is `avPlayer.rate = x`, which plays. + `state` was never touched, so the engine kept reporting `.paused` over a running picture and a + host's play/pause button offered the wrong action. While the session is paused the rate now only + becomes the rate the next `play()` starts at (`desiredRate` plus the host's resume rate, the #436 + machinery), and the session stays paused. Measured in AetherPlayer on the native route: before, + two frames 1.5 s apart differed after a speed step on a paused session; after, the transport log + shows no rate write until the resume, which comes back at the new speed. A host that relied on + `setRate` to resume has to call `play()`. (#730) + +## [7.33.1] - 2026-10-09 + +### Fixed + +- **A software session no longer goes silent on an AirPlay receiver past 44739 s of source clock.** + The software host stamped its audio and video buffers, and anchored its synchronizer, on the source + PTS, and a live channel carries a broadcast clock there. A Belkin AirPlay 2 receiver fed from tvOS + 27.0 played nothing once those stamps passed 2^31 samples of 48 kHz: the same capture offset to + start at 0 and 40002 s played, at 50002 s and its original 59670 s it was silent, with the renderer + rendering and the clock at 1.00 throughout. `RendererTimeline` now latches an origin at the + session's first stamp and moves only what the renderers and the synchronizer see; the clock the + host reads, the playhead, subtitles, frame times and `softwarePresentationTimebase` stay on the + source axis. A source that starts within three hours of zero keeps origin 0 and the stamps it had. + A later one starts its renderers at 10800 s, which leaves about 9.4 hours of forward play and three + hours of seeking back before the stamps leave the safe range. (#395) + +## [7.33.0] - 2026-10-09 + +### Fixed + +- **A stream-copied Dolby Atmos track is declared as object audio in the master playlist.** The + loopback master's `EXT-X-MEDIA:TYPE=AUDIO` tag carried no `CHANNELS` attribute at all. Apple's HLS + Authoring Specification makes it required on every audio rendition, and for Dolby Digital Plus with + Joint Object Coding it is the only playlist-level statement that the rendition carries objects, since + `CODECS` stays `ec-3` for JOC and non-JOC alike (#34) and the `dec3` box is a layer below. With + nothing above the segments saying "object audio", AVFoundation settled on the bed and an Atmos + bitstream that had been stream-copied intact reached an Atmos-capable receiver as 5.1 PCM. The + engine already knew: `HLSVideoEngine` latches the E-AC-3 `profile == 30` verdict and logs + `EAC3+JOC Atmos: stream-copy engaged`, and nothing carried that up to the playlist builder. The + rendition is now advertised `CHANNELS="16/JOC"` when the JOC bitstream actually reached the + segments, and with its served bed count otherwise. The JOC form is gated on the delivery being a + stream copy as well as on the probe, so a JOC source that fell back to the audio bridge claims + only the channels it still has, and the count is read from the codec parameters the muxer was + given rather than the source's. `CODECS` and the `EXT-X-STREAM-INF` line are byte-identical + before and after. (PR #727, thanks to @kdorepos.) +- **An untagged Atmos track gets its `CHANNELS="16/JOC"` too.** The rendition, and with it `CHANNELS`, + was only written for audio with a resolvable language (AE#458), so an `und` or untagged JOC track, + Dolby's own test signals among them, still reached the master without a word about objects. A + stream-copied JOC track now gets a rendition without `LANGUAGE` (`NAME="Dolby Atmos"`), which forces + the master on an SDR source the way a language does. AVFoundation lists it as one option named + "Unknown" where it built no audible group before. An untagged track that is not object audio is + unchanged. The AE#458 audible readback line reports such a session as `served=untagged`. (AE#726) +- **A Blu-ray style Atmos track is described as Atmos in the init segment.** For a Dolby Digital + Plus track whose height channels and objects live in a dependent substream (an AC-3 core followed + by an E-AC-3 dependent frame), FFmpeg's mp4 muxer wrote a `dec3` box that described a bare 5.1 + bed: `chan_loc` 0 and no ETSI TS 103 420 JOC extension, so tvOS decoded the core and an Atmos + receiver reported multichannel PCM. Fixed in the muxer itself through FFmpegBuild 3.7.0, which + backports upstream `f10fdd6310` for `chan_loc` and keeps `complexity_index_type_a` from the + dependent substream; the box for the reported source goes from `14 00 0C 0F 02 00` to + `14 00 0C 0F 02 40 01 10`. A track whose objects sit in the independent substream is unchanged. + `docs/formats.md` no longer claims AVPlayer recognises JOC from `numDepSub` / `depChanLoc`. + (AE#728, diagnosis and measurements by @kdorepos in PR #729.) + +### Tests and CI + +- **Every wait in the suite now follows the rule in `TestWaiting.swift`.** An audit of 79 test files found around 80 places where a step that has to happen carried a wall-clock bound of its own (`waitFor(upTo:)`, hand-rolled `Date()` loops, short semaphore and XCTest timeouts) or a fixed sleep stood in for an observable state, the pattern behind four of the five CI flakes fixed in 7.32.3. Those now wait unbounded under a `.timeLimit`, or wait for the state itself; sync helpers that cannot await keep a generous bound. `try?` around loop sleeps became `try`. Bounds that are the assertion (must not happen within n seconds) stay, and latency assertions that are the point of their test stay with their margin unchanged. +- **`SourceOpenRecoveryTests` "exhausted opening budget" can no longer hang.** It waited unbounded for the open's retry to reach the origin, but the reader cancels that retry `sizeProbeTimeout` after resuming it, and on a loaded machine it can be cancelled before it is on the wire. The retry now gets a grace and the verdict is the ceiling (no third request). +- **`Issue93SlowSegmentServeTests`' raw GET reads to the end of the response** (Content-Length or the chunked terminator) instead of to one second of silence on a keep-alive connection, which left the slow-body test 0.15 s of margin. + +## [7.32.3] - 2026-10-08 + +### Fixed + +- **The delivery-gap watchdog no longer cuts the open's first byte short.** `open()` waits for its first byte within `SourceOpenPolicy.firstByteTimeout` (and the retry within `sizeProbeTimeout`), but the #309 watchdog ended that same request once `connStallTimeout` had passed without data, and the retry the same way, so the open failed with `noResponse` at the stall threshold. With the defaults (stall 20 s, first byte 15 s) the open's budget ran out first, so this only reached a host that sets a longer first-byte budget than 20 s, for an origin that is slow to answer. The generation the open is waiting on is now left to the open's budget; every later generation, including one that never sees a first byte, is still ended at the threshold. + +### Tests and CI + +- Two CI flakes on `main` traced to their timing assumptions, both reproduced on demand. #309's detection test opened with a 0.6 s stall threshold, so a first byte slower than that on a loaded runner failed the open (the watchdog fix above; measured 0.4 s opened, 0.8 s failed), and it gave positive events it needed fixed deadlines (10 s, 5 s), which a loaded runner spent. Those waits now follow the suite's rule: a step that has to happen gets no deadline, the test's `.timeLimit` catches a hang. #377's idle-refill test slept a fixed 8 s for a paused budget that only starts once the window is full, so a slow fill kept the connection alive (`asks == [0]`, reproduced with a 2.5 MB/s origin); it now waits for the end itself, and reads `asks[1]` only behind `#require`, since the trap took the whole test process and every buffered result with it. +- `StreamingBufferTrimTests` asked for two chunks kept after the first trim, which depends on how URLSession cuts the body; a loaded machine coalesces it, leaves one, and the run went red. One kept chunk carries the same address check. +- `RemoteDiscSessionReleaseTests` proved that the open reached the origin by the sockets open at that instant, which URLSession had already released on a CI runner; it counts accepted connections, as its sibling test does. +- The AE#711 still fixture deadlocked its own `AVAssetWriter` on CI: the writer stopped taking video until audio caught up, and the audio track's `requestMediaDataWhenReady` block was never called again (`video 88/120 ready=false, audio 21/40 ready=true`, the audio block called once in total). One loop now feeds both tracks whenever each is ready and never waits on either, so nothing depends on AVFoundation re-invoking a block. Its failure now says where each track stood. + +## [7.32.2] - 2026-10-08 + +### Fixed + +- **A software resume on a long-GOP source starts where it was asked to (#724).** `load(url:startPosition:)` repositions to the keyframe before the target, so the first decoded audio arrives up to a whole GOP early, and the software host moved its clock back onto that sample: a 17.3 s resume on a 10 s GOP published 9.98 s and played audio under a picture that could not present until 17.3. `SWClockAnchorPolicy` now re-anchors only on a sample AHEAD of the anchor (the mid-stream join it exists for, #107); one behind it is preroll and the anchor stands. A paused resume also kept its position until `play()`: the 4 Hz publisher wrote the still unarmed synchronizer (0) over the anchor. Reported with a synthetic fixture and repeated measurements by @alsoeoe. +- **A software resume on a source whose timestamps do not start at zero lands on its target.** The resume position is a session-axis value like any seek, but `load()` handed it to the demuxer unconverted, because the session zero only existed once the first sample had arrived: a 17.3 s resume on a source starting at 600 s landed on the first packet (600.0) and published 17.3 over content from the head. The host now carries the source's origin into the resume before the reposition (`SWClockAnchorPolicy.resumeSessionZero`), so the first picture is 617.29 and the position matches the native path's. + +## [7.32.1] - 2026-10-08 + +### Fixed + +- **Stopping the loopback server no longer ends a connection it does not own.** `HLSLocalServer.stop()` shut its client connections down after releasing the lock their handlers close under, so a handler could close in between, the process could hand that descriptor number to another socket, and the shutdown ended that socket instead: a source request answered with nothing, or a body cut short. On the process-wide engine that is the next session after a channel zap. The listener had the same race: `stop()` closed it while the accept loop could still call `accept` on the number. Client connections are now shut down under the lock, and the accept loop owns the listener, polls it, and closes it on its way out (`shutdown` does not wake a blocked `accept` on Darwin). `MP4SegmentMuxer`'s init no longer closes its first staging file twice when it throws. The test origins had the listener race eight times over and now share one `LoopbackListener`; it showed up on CI as a different loopback test failing each time (#309's open with no response, a bounded fetch losing its connection, a relayed 429 charged twice). + +## [7.32.0] - 2026-10-08 + +### Added + +- **`LoadOptions.progressiveSegmentDelivery` serves VOD loopback segments while they are written.** Off by default. The muxer flushes a fragment about every 0.5 s instead of holding up to 8 s, the segment cache tracks the segment being written, and the loopback server sends each fragment as it lands over a chunked response, so AVPlayer shows and starts on a segment's first fragments instead of waiting for its cut. A segment the producer abandons ends its connection without the final chunk, and each chunk sent counts as fetch activity for the #65 wedge watchdog, which otherwise reads a long transfer as AVPlayer no longer fetching. `aetherctl play --progressive-segments` drives it. Measured on a Mac over a 6 Mbit/s origin with 1080p HEVC at 2.7 Mbit/s: first frame 0.9 s instead of 2.2 s, playing 1.7 s instead of 2.3 s, one rebuffer instead of three to four in the first 30 s, and seeks outside the buffer landing in 0.56 s / 1.27 s instead of 1.20 s / 2.25 s. A reader that seeks backward to a low segment index, and a seal that races a reader's stat of the staging file, both deliver the finished segment. Contributed by yipengfei329 (#721). +- **`PlaybackErrorKind.storageExhausted` (#720).** The volume holding the loopback segment cache filled up and the session could not write its segments. See Fixed. + +### Fixed + +- **A full segment volume is reported as one, not as a source that cannot be muxed (#720).** When the temporary directory's volume ran out of space, the session directory, the segments or the muxer's staging files could not be written, every muxer revive failed the same way, and the give-up arm surfaced `vodSourceFailed` ("Source audio cannot be muxed"), or `audioBridgeProducedNoOutput` on a bridged track. Both send a host's fallback ladder the wrong way for a file that plays once space is freed. The segment cache now latches an out-of-space write from any of the three, and the give-up arm surfaces `.storageExhausted` (`underlyingCode` -28, `AVERROR(ENOSPC)`) ahead of the audio verdicts. A store whose session directory had to be restored first latches on the retry's own error, so a full volume behind a missing directory is caught too. Contributed by yipengfei329. Measured on a device with 197 MB free: a 4K60 title failed to start with the muxer message. + +## [7.31.2] - 2026-10-08 + +### Fixed + +- **Blocking engine work no longer occupies the Swift cooperative pool.** Every detached engine task (demuxer opens and packet reads, the live ingest's FIFO writes under backpressure, the native subtitle readers, `stop()`'s wait for the pump, recording finish, probe closes) ran on the cooperative pool, which has one thread per core and never grows, so each blocked job took a core's worth of async work out of the whole process, the host app's included. They now go through `BlockingWork.detached`, whose `BlockingExecutor` runs jobs on GCD's global queues, which add a thread when one blocks; a test refuses any new `Task.detached` in the engine sources. Found through CI: on the 3-core runner the suite parked every pool thread for half a minute at a time, so a different set of unrelated tests timed out each run (nine 120 s limits fired together at 151 s, their watchdog being a pool task too). Tests that block on purpose run under a new `.offCooperativePool` trait. With the pool free the suite runs in about 13 s instead of 72, and that exposed tests that had leaned on the old pace: three read a transient state against a finite bound, two measured process-wide memory beside parallel suites, one took 150 ms of quiet for a parked producer (`SoftwarePacketReadAhead` now says so itself), and five suites that each clear the process-wide prewarm store now run serialized against each other. `LIBDISPATCH_COOPERATIVE_POOL_STRICT=1` (a one-thread pool) reproduces the CI failure on any Mac: 26 issues across 470 s before, and CI now runs the suite that way as well. +- **A remote disc image reports the bytes it pulls from the origin (#719).** `LiveTelemetry.demuxerBytesFetched` read 0 for every custom-reader source, so a disc image played over HTTP showed no `origin` bytes and, on the software path, no `networkThroughputMbps`, while `HTTPDiscIOReader` pulled the title. The engine's own disc reader now counts the response bodies it receives and the extent map passes the count through; a host's own `IOReader` still reports 0. Measured on a 49.5 GB Blu-ray ISO served over HTTP: 0.0 MB across a 15 s `aetherctl play` before, 107.5 MB rising to 367.5 MB over 25 s after. Contributed by yipengfei329. + +## [7.31.1] - 2026-10-08 + +### Fixed + +- **HEVC declared as private PES takes the #268 VOD ingest (#718).** The carriage probe only read PMT `stream_type 0x24` as HEVC, so a finite HEVC-in-MPEG-TS HLS VOD that declares its video as `stream_type 0x06` plus `registration_descriptor("HEVC")` stayed on the native route, where AVFoundation builds no video track (`0x0` dimensions). That form now counts as HEVC when the registration descriptor is well formed; a truncated descriptor or ES_info loop is not evidence, and the registration never reinterprets another stream type. Checked with aetherctl on a twin of the offset fixture that differs only in the PMT stream type: before, no displayable frame; after, the ingest route with seeks to 90 s and 30 s landing like the `0x24` original. Reported by qoli. + +## [7.31.0] - 2026-10-08 + +### Added + +- **`LoadOptions.liveStartupGraceSeconds` and `liveStartupSingleSegmentMinimumSeconds` tune a `.fastZap` start on long-GOP sources (#712).** A long GOP cannot finalize a segment before the next keyframe, so the two-segment minimum cost a second whole GOP; a host can now let one long enough segment start the session and choose the grace after it. Both default to nil, which keeps today's policy, and neither touches segment cuts, TARGETDURATION or HOLD-BACK. Contributed by yucelokan. +- **Live rewind history is published as soon as it is played, and stays on one timeline (#712).** AVPlayer's seekable-range mirror can lag the cache for seconds after a fast join, which advertised no history while the picture already played; already-played contiguous resident media now counts, prefetched media never does. On the native loopback path display time and seek targets keep the session's shift through a source timestamp reset (`clock.sourceTime` still follows the frame's PTS for cues). `seekToLiveEdge(offsetSeconds:)` returns to a caller-chosen distance behind the edge, `currentItemLiveEdgeTime` and `liveTargetDurationSeconds` are public, and a resume clamp queued by an earlier `play()` yields to a newer seek. Contributed by yucelokan. +- **Live DVR retention leases (#714).** `setNativeLiveDVRLimits(_:availableCapacityBytes:)` and, with the new `LoadOptions.softwareDVRRetention`, `setSoftwareLiveDVRLimits(_:availableCapacityBytes:)` renew a time and disk allowance (`LiveDVRLimits`) on a running session without a reload or a second source. An expired lease withdraws the optional history and the playback cushion stays; `nativeLiveDVRMandatoryBytes` and `softwareLiveDVRBytes` report what is held. Measured against a public HLS channel: a 15 s lease set at t=10 withdrew the range at t=25 and playback stayed at the edge with about 27 MB pinned. Contributed by yucelokan. +- **`LoadOptions.sourceOpenPolicy`, `isSourceSeekable` and `canSeek` (#713).** See Fixed. Contributed by yucelokan. + +### Fixed + +- **An HTTP VOD source that does not answer its first request is retried, not demoted to forward-only (#713).** An unanswered open retries once with an open-ended Range within `SourceOpenPolicy` budgets (15 s first byte, 25 s recovery) and keeps that connection for playback; two unanswered requests fail as `.sourceOpenFailed` instead of repeating the whole open. Size discovery runs as one bounded operation, serial on single-request origins, and joins its losing probes before playback. A forward-only VOD ignores a saved start position and rejects seeks with `SeekEvent.Rejection.sourceNotSeekable`, and a native seek reports a landing only when AVPlayer completed within 0.75 s of the target. Checked against a 25 GB 4K mkv from a Jellyfin server: opens in 58 ms, a 7,700 s jump, a paused seek and a 10-seek burst all land exactly, the same as 7.30.0. Contributed by yucelokan. +- **The #713 recovery tests drive their timing steps from a thread.** On a starved CI runner the async poll missed the window and one test hung into its time limit. Test-only. + +## [7.30.0] - 2026-10-08 + +### Added + +- **`scrubPreviewFrame(atSeconds:refined:maxWidth:isCancelled:)` returns a timestamped, cancellable preview (#716).** The same resident bytes `scrubThumbnail` decodes from (native segment cache, software packet cache or DVR ring), never a second source connection and never a playback seek, but the result is a `ScrubFrame` carrying the measured `actualSeconds` on the `seek(to:)` axis, whether the decode reached the target (`refined`), and the resident `validRange` of the run it came from. A request is bounded at 750 ms and 900 packets, and a cancelled, replaced or stale request returns nil. `scrubPreviewSourceGeneration` changes on every teardown so a host can fence late results, `clearResidentPreviewFrames()` drops in-flight work. Contributed by yucelokan. +- **`FrameExtractor.boundedSnapshot(at:maxSize:limits:cancellation:)` puts one budget over a disposable still (#717).** The caller's `ProbeLimits` and `ProbeCancellation` span open, stream analysis, seek and decode, a stalled HTTP response header included, and the result is a `BoundedStillFrame` with the decoded frame's PTS where the source carries one. A resident preview request cancels a bounded one still in flight on the same extractor. Ordinary `snapshot` and `thumbnail` are unchanged. Contributed by yucelokan. + +### Fixed + +- **A live origin that resends packets after a reconnect no longer plays them twice (#715).** On the single-demuxer stream-copy live path, a backward timestamp jump whose packets match accepted ones in DTS, PTS and SHA-256 of the payload is buffered until both audio and video have passed their old frontier, then the duplicates are dropped and playback continues on the existing timeline. A single mismatch, a read error, EOF or the bound (96 MB, 10,000 packets) hands every buffered packet to the ordinary discontinuity rebase, so a genuine programme boundary loses nothing. Bridged and side audio are excluded. The no-cut watchdog treats the check as intentional while still catching a starved source. Contributed by yucelokan. + +## [7.29.0] - 2026-10-07 + +### Added + +- **An audio-track switch holds the picture instead of flashing black.** Every switch rebuilds the session, and every rebuild showed black until the new pipeline's first frame. The outgoing frame is now read and laid over the video until then. Native path: #711 keeps the old item mounted while the source reopens, but `replaceCurrentItem` still blanks the player layer until the new item decodes, so the frame is read from the paused item through an `AVPlayerItemVideoOutput` (about 20 ms paused). Software path: the rebuild replaces host and layer, and the old host's `stop()` flushed its layer for the whole startup of the new one; the frame is read back from the renderer (`displayedPixelBuffer`, or the newest frame enqueued). Dolby Vision with a displayable base layer (8.x, 10.1+) holds that base layer as HDR. Profile 5 and AV1 Profile 10 have none, so their frame is decoded from the resident segment through the RPU reshaping the scrub stills already use, frame-accurately and 960 wide (measured on an M1 Pro, Profile 5 UHD: 1.53 s at 1920 wide, 0.40 s at 960, the reshaping runs per pixel on the CPU); the switch waits up to 3 s for it with the outgoing picture paused. Nothing is held in PiP or on external playback. Verified on an Apple TV 4K for native H.264; the software path and Dolby Vision are covered by tests, Profile 5 and 8.1 against Dolby's own clips. +- **`AetherStillView`, `bindStillView(_:)`, `unbindStillView(_:)`** for a host that renders the native path through AVKit rather than `AetherPlayerView` and so gave the engine no surface to hold the picture on. Transparent and input-free; place it above the video and below the host's chrome (for instance at the top of `AVPlayerViewController.contentOverlayView`) and set its `videoGravity` to the host player's fill. +- **`setSoftwareSubtitleDelay(_:)` and `softwareSubtitleDelaySeconds` (#709).** A media-time offset for both subtitle channels composited into software PiP frames, persistent across loads, taking effect on the next frame without a seek or a clock change. Native renditions, native PiP and AirPlay are not shifted. Contributed by yucelokan. +- **`needsForegroundVideoRestore` (#710).** True once background policy has actually released the video item, so a host restores through `reloadAtCurrentPosition(applying:)` before playing instead of inferring a teardown from `state` and `playbackBackend`. Contributed by yucelokan. + +### Fixed + +- **Rapid audio-track picks coalesce into one rebuild at a time (#711).** A second pick during a rebuild used to race the first one's generation check. A pick back to the active track now costs nothing, and `stop()` or a new `load` drops what is queued. Contributed by yucelokan. +- **A play or pause pressed during any session rebuild decides how it comes back.** An audio or disc-title switch, `reloadAtCurrentPosition()` or an engine-raised rebuild came back in the transport state it started from, so a pause pressed while it ran was lost. `play()` and `pause()` now write the transport the rebuild settles from, `transportIntentUnderReconstruction` (#464 round 3), while one runs. #711 had added this for audio picks in a field of its own; the two are one now. +- **Video routing asks for the AV1 hardware decoder only for AV1 sources (#708).** It registered the supplemental decoder on every first load, H.264 and HEVC included. Contributed by yucelokan. +- **The #243 fetch-tally test tolerates a parallel session start.** A session start zeroes the process-wide tally, so an engine test loading in parallel failed it on CI. Test-only. + ## [7.28.3] - 2026-10-07 ### Fixed diff --git a/Examples/README.md b/Examples/README.md index 78c7c9545..c3fd89188 100644 --- a/Examples/README.md +++ b/Examples/README.md @@ -18,7 +18,7 @@ Three samples covering different audiences: ``` https://github.com/superuser404notfound/AetherEngine ``` - Dependency Rule: Up to Next Major Version, starting from `7.28.3`. Add the `AetherEngine` library product to your app target. + Dependency Rule: Up to Next Major Version, starting from `7.36.0`. Add the `AetherEngine` library product to your app target. 3. **Drop the file in.** Replace the Xcode template's default `App.swift` (or whatever the generated `@main` file is called) with the contents of [`MinimalPlayerApp.swift`](MinimalPlayer/MinimalPlayerApp.swift). The file is self-contained: it defines both the `@main App` struct and the `ContentView`. diff --git a/Package.resolved b/Package.resolved index f2f5d30b5..7392d3c55 100644 --- a/Package.resolved +++ b/Package.resolved @@ -1,13 +1,13 @@ { - "originHash" : "a7c538250a98861022d56ad395d9ddb89c906dbebf35ccdce594611315aa87eb", + "originHash" : "186f06d8998fc1834706d0e0cb7e529a778f970a85f160f26a6ac2fc7c8e4ee2", "pins" : [ { "identity" : "ffmpegbuild", "kind" : "remoteSourceControl", "location" : "https://github.com/superuser404notfound/FFmpegBuild", "state" : { - "revision" : "fda08325455bc12c112b5b82d014b98fa0fee0be", - "version" : "3.6.0" + "revision" : "013c48bd4d3073428f31cade039ec4ed958d0ceb", + "version" : "3.7.1" } }, { @@ -19,13 +19,22 @@ "version" : "2.1.0" } }, + { + "identity" : "libdtsx", + "kind" : "remoteSourceControl", + "location" : "https://github.com/superuser404notfound/LibDTSX", + "state" : { + "revision" : "9906f8fe9b72eb4d79a85754adbba6fa52cfe7b2", + "version" : "1.0.1" + } + }, { "identity" : "libtruehd", "kind" : "remoteSourceControl", "location" : "https://github.com/superuser404notfound/LibTrueHD", "state" : { - "revision" : "7ac6b379cb5d77ff5f424bc9daa17131b044a962", - "version" : "2.0.0" + "revision" : "577de495184254e2c660ebfd6ce3f7d97f45899d", + "version" : "2.3.0" } }, { diff --git a/Package.swift b/Package.swift index 2193e0553..159fbf410 100644 --- a/Package.swift +++ b/Package.swift @@ -38,7 +38,7 @@ let package = Package( // rebuilds still reach existing tags, which is where a pure rebuild // belongs; anything that adds slices or enables a component is a minor // and reaches consumers through an engine release. - .package(url: "https://github.com/superuser404notfound/FFmpegBuild", .upToNextMinor(from: "3.6.0")), // 3.6.0: an MPEG-TS audio PID is identified by its payload when its label does not name the codec: the raw dts / truehd / loas demuxers are in, so the mpegts content probe can confirm DTS, TrueHD and LATM at all (without them the lenient mp3 probe named the track, whatever the label), and a PID labelled 0x03 (MPEG-1 audio) gets the same content probe as 0x04; a DTS-HD IPTV channel opened as mp3 and never produced a frame (#641); same n8.1.3 otherwise; 3.5.0: FFmpeg n8.1.3, 268 upstream commits over n8.1.2, of which six touch code this engine ships: VP9 kept `next_refs[]` referenced across `avcodec_flush_buffers()`, so a worker could reseed its references from the pre-flush set and the first inter frame after a seek decoded against released buffers (heap OOB read and write, and this engine decodes VP9 with frame threading and flushes on every reposition); the Dolby Vision RPU parser trims trailing zero padding again, which n8.1.2 had stopped doing, so a padded RPU no longer fails the ext-block size check and loses its dynamic metadata, and the RPU partition counts are bounded; a VC-1 picture ending on a one-bit skipped macroblock keeps that macroblock instead of falling into error concealment; the `dca_core` bsf clears the profile it has just stripped; and a container channel layout survives a failed decoder open during probing. Same dav1d 1.5.4, zimg 3.0.6 and libzvbi 0.2.45 (all current upstream), same component set, same six local patches, unchanged soname majors; 3.4.0: FFmpeg learns the `dav1` sample entry in both directions, the AV1 variant of `av01` that signals Dolby Vision, so a Profile 10.0 source can be read at all and can be remuxed with the tag its packaging requires; stock FFmpeg has it in neither of its two mp4 tag tables, so the read probes as "unknown codec" and the write fails EINVAL (#547); same n8.1.2 binaries as 3.3.0 otherwise, compiled against the Xcode 27 SDKs with unchanged deployment targets; 3.3.0: every slice a shipped app can embed carries its dSYM inside the xcframework, so Xcode copies it into `.xcarchive/dSYMs` and a crash inside FFmpeg symbolicates instead of staying a list of addresses (FFmpegBuild#4); same n8.1.2 binaries as 3.2.1 apart from their UUID, the libraries just compile with `-gline-tables-only` now and the debug map is harvested before the shipped binary is stripped; 3.2.1: vc1_parser seeds its parse context from extradata, so a seek landing on an entry point alone keeps its picture size instead of falling back to 0x0 or to a size read out of the following payload (#490, FFmpeg PR 24458); 3.2.0: the legacy Flash tail, video and audio together (flv1 / vp6 / vp6f / vp6a, nellymoser, adpcm_swf, speex, and FLV's pcm_s16be / pcm_u8 / pcm_alaw / pcm_mulaw), so a pre-2008 .flv plays with sound where before only H.264-in-FLV did; flashsv stays out, it needs zlib and would have been dropped silently; 3.1.0: native .wmv / .asf, the asf demuxer plus every WMA decoder (Standard, Pro, Lossless, Voice), which is the container half of the legacy Microsoft support 2.4.3 started (FFmpegBuild#3); 3.0.0: every target, product, framework bundle and install name carries an `Aether` prefix, so this build can sit in an app that already has an FFmpeg (FFmpegKit, MobileVLCKit, mpv); same n8.1.2 binaries as 2.5.0, only names changed; 2.5.0: libzvbi 0.2.45 for GHSA-86rm-g7qf-j2fh (OOB read/write + integer underflow, reachable through the libzvbi_teletext decoder), dav1d 1.5.4, zimg 3.0.6, and the concat demuxer removed (a script demuxer selectable by probing alone, which made any stream a potential file-open primitive); 2.4.3: the legacy Microsoft video decoders (msmpeg4v1/v2/v3, wmv1/wmv2/wmv3; FFmpegBuild#3); 2.4.2: pgssubdec missing-palette recovery, replaces the 2.1.1 Epoch-Continue retain (#142); 2.4.1: qtrle decoder; 2.4.0: visionOS (xros) device + simulator slices; 2.3.0: webvtt demuxer (standalone .vtt sidecars, plus the cue settings as packet side data); 2.2.0: matroska TTS warn-only per RFC 9559 (#145 rework); 2.1.3: sup demuxer (raw PGS sidecars); 2.1.2: matroska TrackTimestampScale clamp (#145, dropped in 2.2.0); 2.1.1: pgssubdec Epoch-Continue retain (#142); 2.1.0: yadif_videotoolbox + hwupload (Metal GPU deinterlace); 2.0.0: dynamic frameworks (LGPL), zvbi GPL excision + .package(url: "https://github.com/superuser404notfound/FFmpegBuild", .upToNextMinor(from: "3.7.1")), // 3.7.1: the mp4 muxer no longer aborts the process when a fragment is flushed with a packet still queued in the interleaver behind the samples already written for its track (check_pkt had clamped them past it, so get_cluster_duration hit av_assert0(next_dts >= 0)); same n8.1.3 otherwise; 3.7.0: the mp4 muxer's dec3 box describes a DD+ track whose height channels and Atmos objects live in a dependent substream (Blu-ray style AC-3 core plus E-AC-3 dependent frame): chan_loc is derived from chanmap per TS 102 366 (upstream f10fdd6310, backported) and the TS 103 420 JOC extension is taken from the dependent substream too, so such a track is no longer described as a bare 5.1 bed and an Atmos receiver no longer reports multichannel PCM (#728); same n8.1.3 otherwise; 3.6.0: an MPEG-TS audio PID is identified by its payload when its label does not name the codec: the raw dts / truehd / loas demuxers are in, so the mpegts content probe can confirm DTS, TrueHD and LATM at all (without them the lenient mp3 probe named the track, whatever the label), and a PID labelled 0x03 (MPEG-1 audio) gets the same content probe as 0x04; a DTS-HD IPTV channel opened as mp3 and never produced a frame (#641); same n8.1.3 otherwise; 3.5.0: FFmpeg n8.1.3, 268 upstream commits over n8.1.2, of which six touch code this engine ships: VP9 kept `next_refs[]` referenced across `avcodec_flush_buffers()`, so a worker could reseed its references from the pre-flush set and the first inter frame after a seek decoded against released buffers (heap OOB read and write, and this engine decodes VP9 with frame threading and flushes on every reposition); the Dolby Vision RPU parser trims trailing zero padding again, which n8.1.2 had stopped doing, so a padded RPU no longer fails the ext-block size check and loses its dynamic metadata, and the RPU partition counts are bounded; a VC-1 picture ending on a one-bit skipped macroblock keeps that macroblock instead of falling into error concealment; the `dca_core` bsf clears the profile it has just stripped; and a container channel layout survives a failed decoder open during probing. Same dav1d 1.5.4, zimg 3.0.6 and libzvbi 0.2.45 (all current upstream), same component set, same six local patches, unchanged soname majors; 3.4.0: FFmpeg learns the `dav1` sample entry in both directions, the AV1 variant of `av01` that signals Dolby Vision, so a Profile 10.0 source can be read at all and can be remuxed with the tag its packaging requires; stock FFmpeg has it in neither of its two mp4 tag tables, so the read probes as "unknown codec" and the write fails EINVAL (#547); same n8.1.2 binaries as 3.3.0 otherwise, compiled against the Xcode 27 SDKs with unchanged deployment targets; 3.3.0: every slice a shipped app can embed carries its dSYM inside the xcframework, so Xcode copies it into `.xcarchive/dSYMs` and a crash inside FFmpeg symbolicates instead of staying a list of addresses (FFmpegBuild#4); same n8.1.2 binaries as 3.2.1 apart from their UUID, the libraries just compile with `-gline-tables-only` now and the debug map is harvested before the shipped binary is stripped; 3.2.1: vc1_parser seeds its parse context from extradata, so a seek landing on an entry point alone keeps its picture size instead of falling back to 0x0 or to a size read out of the following payload (#490, FFmpeg PR 24458); 3.2.0: the legacy Flash tail, video and audio together (flv1 / vp6 / vp6f / vp6a, nellymoser, adpcm_swf, speex, and FLV's pcm_s16be / pcm_u8 / pcm_alaw / pcm_mulaw), so a pre-2008 .flv plays with sound where before only H.264-in-FLV did; flashsv stays out, it needs zlib and would have been dropped silently; 3.1.0: native .wmv / .asf, the asf demuxer plus every WMA decoder (Standard, Pro, Lossless, Voice), which is the container half of the legacy Microsoft support 2.4.3 started (FFmpegBuild#3); 3.0.0: every target, product, framework bundle and install name carries an `Aether` prefix, so this build can sit in an app that already has an FFmpeg (FFmpegKit, MobileVLCKit, mpv); same n8.1.2 binaries as 2.5.0, only names changed; 2.5.0: libzvbi 0.2.45 for GHSA-86rm-g7qf-j2fh (OOB read/write + integer underflow, reachable through the libzvbi_teletext decoder), dav1d 1.5.4, zimg 3.0.6, and the concat demuxer removed (a script demuxer selectable by probing alone, which made any stream a potential file-open primitive); 2.4.3: the legacy Microsoft video decoders (msmpeg4v1/v2/v3, wmv1/wmv2/wmv3; FFmpegBuild#3); 2.4.2: pgssubdec missing-palette recovery, replaces the 2.1.1 Epoch-Continue retain (#142); 2.4.1: qtrle decoder; 2.4.0: visionOS (xros) device + simulator slices; 2.3.0: webvtt demuxer (standalone .vtt sidecars, plus the cue settings as packet side data); 2.2.0: matroska TTS warn-only per RFC 9559 (#145 rework); 2.1.3: sup demuxer (raw PGS sidecars); 2.1.2: matroska TrackTimestampScale clamp (#145, dropped in 2.2.0); 2.1.1: pgssubdec Epoch-Continue retain (#142); 2.1.0: yadif_videotoolbox + hwupload (Metal GPU deinterlace); 2.0.0: dynamic frameworks (LGPL), zvbi GPL excision // Pure-Swift SMB2 client (MIT) that speaks the protocol over // NWConnection. Replaces AMSMB2/libsmb2, which EPERMs on tvOS/iOS. // Pinned to the 0.3.x minor: SMBClient is pre-1.0 with an actively @@ -53,9 +53,14 @@ let package = Package( // floor instead of backing off, so all of 5.x stopped resolving. .package(url: "https://github.com/superuser404notfound/LibDovi", .upToNextMinor(from: "2.1.0")), // 2.1.0: dolby_vision 3.4.0, header additive only (two new CMv4.0 metadata entry points, nothing removed); 2.0.0: visionOS (xros) device + simulator slices, declared tvOS floor corrected to 17.0 (was published as 1.1.0, withdrawn: a floor raise is breaking and broke every 5.x pin that floated onto it); 1.0.2: iOS slices + x86_64 (Intel Macs) // TrueHD decoder that also decodes the Atmos object presentation (beds, objects, OAMD) for - // `objectAudioRendering`. The Rust `truehd` crate (Apache-2.0) behind a C API, prebuilt as an - // xcframework like LibDovi so consumers need no Rust. Pinned to the minor for the same reason. - .package(url: "https://github.com/superuser404notfound/LibTrueHD", .upToNextMinor(from: "2.0.0")), // 2.0.0: SiloObjectAudio renamed after its transfer (AE#731): package LibTrueHD, product, module and xcframework TrueHD, same decoder and C API; 1.0.0: first release, as SiloObjectAudio + // `objectAudioRendering` (#731). The Rust `truehd` crate (Apache-2.0) behind a C API, prebuilt + // as an xcframework like LibDovi so consumers need no Rust. Pinned to the minor for the same reason. + .package(url: "https://github.com/superuser404notfound/LibTrueHD", .upToNextMinor(from: "2.3.0")), // 2.3.0: decodes about a third faster again (harletty's truehd speed work: blocks decoded in place, table-driven Huffman, vectorised prediction filters, whole-block matrices; truehdd#42 included), byte-identical output; 2.2.1: rust_eh_personality exported weak, so it coalesces with LibDovi's copy and a host with its own Objective-C and C++ stays within compact unwind's three personality routines (#752); same decoder; 2.2.0: decodes about 30% faster (the truehd crate with its block and PCM buffers sized to the samples they hold, truehdd#42, from a fork of upstream main until that is merged), byte-identical output; 2.1.0: x86_64 in the iOS simulator slice, so a generic iOS Simulator build of a host links; same decoder; 2.0.0: transferred from Silo-Server/SiloObjectAudio and renamed (product TrueHD), rebuilt from source; same decoder as SiloObjectAudio 1.0.0 + // DTS:X decoder for `objectAudioRendering`: lossless DTS-HD MA with the encoder's height and object + // folds removed from the bed, the fixed heights, and the alternate presentations' objects placed in + // the same room coordinates as LibTrueHD's. The Rust `dca` crate (Apache-2.0) behind a C API, + // prebuilt as an xcframework like LibTrueHD. Pinned to the minor for the same reason. + .package(url: "https://github.com/superuser404notfound/LibDTSX", .upToNextMinor(from: "1.0.1")), // 1.0.1: rust_eh_personality weak (#752); dca 0.8.0 (harletty-bridge a717bae); the first two frames after a start or seek only prime the decoder ], targets: [ .target( @@ -64,7 +69,10 @@ let package = Package( .product(name: "AetherFFmpegBuild", package: "FFmpegBuild"), .product(name: "Dovi", package: "LibDovi"), .product(name: "TrueHD", package: "LibTrueHD"), + .product(name: "DTSX", package: "LibDTSX"), ], + // Silent E-AC-3 Atmos that `AtmosOutputActivator` loops beside an APAC track on tvOS. + resources: [.copy("Resources/silent-atmos.mp4")], linkerSettings: [ .linkedFramework("AVFoundation"), .linkedFramework("AVKit"), diff --git a/README.md b/README.md index 7fd3b8b0a..148284e12 100644 --- a/README.md +++ b/README.md @@ -50,6 +50,7 @@ You provide the transport bar. You provide the dropdowns. You provide the pretty - [Gflix](https://gflixhub.app/): A flawless media app for your media. - [Melon Video](https://apps.apple.com/ca/app/melon-video/id6811750997): Video Player for Vision Pro. - [WUW IPTV Player](https://apps.apple.com/tr/app/wuw-iptv-player-smart-m3u-tv/id6759220800): Watch U Want — or simply WUW — your IPTV player for iPhone, iPad, Mac, Apple TV and Apple Vision Pro. +- [GiVo Stream](https://givostreamapp.com): media player for iPhone, iPad and Apple TV with bring-your-own playlists, live timeshift, DVR and VOD. Shipping something on AetherEngine? [Submit it](https://github.com/superuser404notfound/AetherEngine/issues/new?template=used-by-submission.yml) to get listed here and on [aetherengine.superuser404.de](https://aetherengine.superuser404.de). @@ -66,7 +67,7 @@ A scannable summary; the depth for each row lives in **[docs/formats.md](docs/fo | Video (SW) | AV1 (dav1d) without HW, and AV1 High / Professional (4:4:4, 4:2:2, 12-bit) everywhere, VP9 / VP8, MPEG-4 Part 2 / MPEG-2 / VC-1, QuickTime RLE, the Flash tail (Sorenson Spark, On2 VP6) and anything else the FFmpeg build carries a decoder for (software is the default route; only HEVC, H.264 and HW-decodable AV1 go native), H.264 High 4:2:2 / 4:4:4 / 10 and HEVC Rext where VideoToolbox has no HW decoder (Intel Macs, older chips), interlaced H.264 (AVPlayer does not deinterlace; on VOD the declared field order is verified against decoded frames, so progressive-in-interlaced-carriage keeps hardware decode); GPU deinterlace (yadif_videotoolbox, Metal, field-rate by default) with a CPU bwdif fallback | | HDR | HDR10, HDR10+ (per-frame ST 2094-40), Dolby Vision (P5, P7 as single-layer 8.1, P8.1, P8.4, AV1 P10.x), HLG, HDR Vivid (played on its HLG / PQ base, CUVA metadata reported by `probe`) | | Audio | AAC, AC3, EAC3, FLAC, ALAC stream-copy lossless; TrueHD / MLP / DTS / DTS-HD MA / MP3 / MP2 / Opus / Vorbis / LPCM (incl. Blu-ray, G.711) / WMA (Standard, Pro, Lossless, Voice) / Nellymoser / ADPCM-SWF / Speex bridge to EAC3 5.1 (default) or lossless FLAC | -| Dolby Atmos | EAC3+JOC stream-copied on every route (HDMI MAT 2.0, AirPods spatial, BT downmix). No container reliably declares JOC pre-decode, so an honest `TrackInfo.isAtmos` needs a bounded decode: `AetherEngine.probeDetectingAtmos(url:/source:)` answers for a details screen without starting playback, and `LoadOptions.confirmAtmos` has the running session confirm its own tracks in the background and republish `audioTracks`. Both are opt-in and neither sits on the playback-start path | +| Dolby Atmos | EAC3+JOC stream-copied on every route (HDMI MAT 2.0, AirPods spatial, BT downmix). No container reliably declares JOC pre-decode, so an honest `TrackInfo.isAtmos` needs a bounded decode: `AetherEngine.probeDetectingAtmos(url:/source:)` answers for a details screen without starting playback, and `LoadOptions.confirmAtmos` has the running session confirm its own tracks in the background and republish `audioTracks`. Both are opt-in and neither sits on the playback-start path. TrueHD Atmos keeps its heights too, opt-in through `LoadOptions.objectAudioRendering`: the engine decodes the Atmos objects, renders them into a speaker bed and delivers Apple Positional Audio, which tvOS sends to an Atmos receiver as Dolby MAT and iOS plays as Spatial Audio ([details](docs/formats.md#truehd-atmos-with-heights)). DTS:X takes the same route, its heights and objects unfolded from the compatible 7.1 ([details](docs/formats.md#dtsx-with-heights)) | | Surround | 5.1 / 7.1 with correct `AudioChannelLayout` | | Audio-only | `LoadOptions.audioOnly`: lean pipeline, no video machinery, system Now-Playing on tvOS / iOS | | Background audio | Audio keeps playing when the app backgrounds on iOS: native AVPlayer stays alive, the software path drops video and keeps decoding audio (`backgroundPlaybackEnabled` / `pictureInPictureActive`); a paused session survives quick app switches for a grace window (`backgroundTeardownGraceSeconds`, default 15 s) before the wedge-safe teardown runs. tvOS tears down immediately (wedge-safe) unless a PiP window is active, which keeps the pipeline and loopback server alive; with PiP the software path keeps decoding video too (the window needs frames). Hosts gate corrective actions on the published `isSessionReady` | @@ -93,7 +94,7 @@ On Apple platforms the real choice is between AVPlayer, with deep OS integration | **Container & codec breadth** | Wide, FFmpeg demux | Wide, FFmpeg demux | Narrow, Apple's set | Wide | Wide | | **Hardware decode** | VideoToolbox, dav1d SW fallback | VideoToolbox, FFmpeg SW fallback | VideoToolbox | VideoToolbox plus software | VideoToolbox plus software | | **Dolby Vision** | P5, P7 as 8.1, P8.1, P8.4, AV1 P10.x, real display switch | P5, P8 via AVPlayer; their matrix lists P5 HDR display without overheating as paid LGPL | P5 and P8.1 only | Tone-maps, no DV display | Tone-maps, no DV display | -| **Dolby Atmos** | EAC3+JOC stream-copied (HDMI MAT, spatial) | EAC3+JOC via AVPlayer | EAC3+JOC passthrough | Decodes to PCM, no object passthrough | No Atmos passthrough on Apple | +| **Dolby Atmos** | EAC3+JOC stream-copied (HDMI MAT, spatial); TrueHD Atmos and DTS:X rendered to APAC, heights kept | EAC3+JOC via AVPlayer | EAC3+JOC passthrough | Decodes to PCM, no object passthrough | No Atmos passthrough on Apple | | **HDR on tvOS** | Native Match Content switch | Native Match Content on AVPlayer path, else Metal tone-map | Native Match Content | Software tone-mapping | Software tone-mapping | | **Rendering & UI** | OS-native, you ship SwiftUI | Own Metal renderer, bundled controls | OS-native, you ship UI | Own renderer, bundled controls | Own renderer, bundled OSC | | **Apple TV / App Store** | Yes, LGPL plus store exception | Free build GPL, paid LGPL tier for AV1 hardware decode and the full decoder set | Yes | Yes, LGPL | Not practical, GPL, no tvOS | @@ -385,7 +386,7 @@ Subtitle cues land in raw source PTS; render the overlay against `player.sourceT Install via Swift Package Manager: ```swift -.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "7.28.3") +.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "7.36.0") ``` Three samples ship in `Examples/`: @@ -632,10 +633,10 @@ Browse all of this as a searchable site at **[aetherengine.superuser404.de](http AetherEngine uses [Semantic Versioning](https://semver.org). The public API surface, every `public` declaration in `Sources/AetherEngine/`, is the stability contract. **Major** removes / renames public symbols or breaks adopters; **Minor** adds public API or codec / format support; **Patch** fixes bugs with no public API change. `internal` types are not part of the contract. ```swift -.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "7.28.3") +.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "7.36.0") ``` -Pin to `.upToNextMinor(from: "7.28.3")` for stricter teams that prefer to opt into minor bumps explicitly. +Pin to `.upToNextMinor(from: "7.36.0")` for stricter teams that prefer to opt into minor bumps explicitly. ## Requirements @@ -674,6 +675,10 @@ The exception covers AetherEngine's own code; it does not extend to its dependen **libdovi** reaches your app through [LibDovi](https://github.com/superuser404notfound/LibDovi) as a static library. It is the compiled `dolby_vision` crate from [dovi_tool](https://github.com/quietvoid/dovi_tool), Copyright (c) quietvoid and contributors, dual-licensed MIT OR Apache-2.0 and consumed here under the MIT option. MIT asks for that copyright notice to travel with the binary, and it is quietvoid's notice that belongs on the acknowledgements screen. The MIT text in LibDovi's own `LICENSE` covers the packaging and build scripts only; both parts are in that one file. +**LibTrueHD** ([superuser404notfound/LibTrueHD](https://github.com/superuser404notfound/LibTrueHD)) reaches your app as a static library and decodes TrueHD for `objectAudioRendering`. Its C API, framer and packaging are MIT (Copyright Quick104, who wrote it for Silo as SiloObjectAudio, and Vincent Herbst). It compiles in the `truehd` and `oamd` crates from [truehdd](https://github.com/truehdd/truehdd), Copyright Rainbaby and the truehdd contributors, under the Apache License 2.0, which asks for the license text and LibTrueHD's `NOTICE` to travel with the binary. Apache-2.0 combines with the engine's LGPL-3.0. The library is linked whether or not a host turns the option on. + +**LibDTSX** ([superuser404notfound/LibDTSX](https://github.com/superuser404notfound/LibDTSX)) reaches your app as a static library and decodes DTS:X for `objectAudioRendering`. Its C API, framing and packaging are Apache-2.0, and it compiles in the `dca` crate from [harletty-bridge](https://github.com/harletty/harletty-bridge), also under the Apache License 2.0, which asks for the license text and LibDTSX's `NOTICE` to travel with the binary. It is linked whether or not a host turns the option on. + **SMBClient** ([kishikawakatsumi/SMBClient](https://github.com/kishikawakatsumi/SMBClient), MIT) reaches your app only if you link the `AetherEngineSMB` product. Linking `AetherEngine` alone pulls in none of its symbols, even though SwiftPM still records the package in `Package.resolved`, which describes the resolved graph rather than what the linker kept. ### Linking the engine statically diff --git a/Scripts/make-silent-atmos.swift b/Scripts/make-silent-atmos.swift new file mode 100644 index 000000000..025d6c195 --- /dev/null +++ b/Scripts/make-silent-atmos.swift @@ -0,0 +1,157 @@ +// Writes the silent Dolby Digital Plus Atmos stream the engine bundles for `AtmosOutputActivator`. +// From SpatialAudioBridge (Apache-2.0, https://github.com/kristofferR/SpatialAudioBridge). +// +// swift Scripts/make-silent-atmos.swift silent-atmos.ec3 +// ffmpeg -i silent-atmos.ec3 -c copy -fflags +bitexact -map_metadata -1 Sources/AetherEngine/Resources/silent-atmos.mp4 +// +// Every bit is written here from ETSI TS 102 366 (E-AC-3) and TS 103 420 (object audio); no encoder +// output or programme audio is involved. The 5.1 core codes no mantissas and turns dither off, so it +// decodes to digital silence. The frame header carries the Atmos extension flag, from which FFmpeg's +// MP4 muxer writes the dec3 extension that Apple reads as 'ec+3'. There is no object metadata: tvOS +// ignores it unless Dolby's keyed EMDF protection is valid. +import Foundation + +struct BitWriter { + private(set) var bytes: [UInt8] = [] + private(set) var count = 0 + + mutating func write(_ value: Int, _ bits: Int) { + precondition(value >> bits == 0, "\(value) does not fit in \(bits) bits") + for shift in stride(from: bits - 1, through: 0, by: -1) { + if count % 8 == 0 { bytes.append(0) } + bytes[count / 8] |= UInt8((value >> shift) & 1) << (7 - count % 8) + count += 1 + } + } + + mutating func write(_ flag: Bool) { write(flag ? 1 : 0, 1) } + + mutating func pad(to bits: Int) { + precondition(count <= bits, "frame content exceeds \(bits) bits") + while count < bits { write(0, 1) } + } +} + +/// AC-3 CRC: polynomial x^16 + x^15 + x^2 + 1, most significant bit first. +func crc16>(_ bytes: S) -> Int { + var crc = 0 + for byte in bytes { + crc ^= Int(byte) << 8 + for _ in 0..<8 { crc = crc & 0x8000 != 0 ? ((crc << 1) ^ 0x8005) & 0xFFFF : (crc << 1) & 0xFFFF } + } + return crc +} + +let frameCount = 63 // 2.016 s; the activator loops it. +let frameBytes = 3_072 // 768 kbit/s, the common streaming rate for DD+ Atmos. +let fullBandwidthChannels = 5 // 3/2 with LFE, the core used by JOC streams. +let bandwidthCode = 60 // endmant 253, the full bandwidth of an uncoupled channel. +let objectCount = 16 // complexity_index_type_a of common DD+ Atmos streams. + +/// D15 exponent groups that climb from the largest absolute exponent, 15, to the smallest level, 24. +func exponentGroups(count: Int) -> [Int] { + // Each 7-bit group codes three deltas, offset by 2, as 25 * d0 + 5 * d1 + d2. + let deltas = [2, 2, 2, 2, 1] + Array(repeating: 0, count: count * 3 - 5) + return stride(from: 0, to: deltas.count, by: 3).map { 25 * (deltas[$0] + 2) + 5 * (deltas[$0 + 1] + 2) + deltas[$0 + 2] + 2 } +} + +func silentFrame() -> [UInt8] { + var w = BitWriter() + // syncinfo and bsi (TS 102 366 E.1.2.1-2) + w.write(0x0B77, 16) + w.write(0, 2) // strmtyp: independent + w.write(0, 3) // substreamid + w.write(frameBytes / 2 - 1, 11) // frmsiz + w.write(0, 2) // fscod: 48 kHz + w.write(3, 2) // numblkscod: six blocks + w.write(7, 3) // acmod: 3/2 + w.write(true) // lfeon + w.write(16, 5) // bsid + w.write(27, 5) // dialnorm: -27 dBFS + w.write(false) // compre + w.write(false) // mixmdate + w.write(true) // infomdate + w.write(0, 3) // bsmod: complete main + w.write(true) // copyrightb + w.write(true) // origbs + w.write(0, 2) // dsurexmod: not indicated + w.write(false) // audprodie + w.write(false) // sourcefscod + w.write(true) // addbsie + w.write(1, 6) // addbsil: two bytes follow + w.write(1, 8) // reserved 7 bits, flag_ec3_extension_type_a (TS 103 420 8.3) + w.write(objectCount, 8) // complexity_index_type_a + + // audfrm (E.1.2.3), with the strategy flags of common DD+ Atmos encoders. + w.write(false) // expstre: frame-based exponent strategies + w.write(false) // ahte + w.write(0, 2) // snroffststr: one SNR offset for the frame + w.write(false) // transproce + w.write(false) // blkswe + w.write(true) // dithflage + w.write(true) // bamode + w.write(true) // frmfgaincode + w.write(false) // dbaflde + w.write(true) // skipflde + w.write(false) // spxattene + w.write(false) // cplinu[0] + for _ in 1..<6 { w.write(false) } // cplstre[blk]: coupling stays off + for _ in 0..> 8) + frame[frameBytes - 1] = UInt8(crc & 0xFF) + return frame +} + +guard CommandLine.arguments.count == 2 else { + print("Usage: swift Scripts/make-silent-atmos.swift output.ec3") + exit(1) +} +let frame = silentFrame() +precondition(frame.count == frameBytes) +let stream = (0.. "$AETHER_CAPTIONS" <<'SRT' +1 +00:00:00,000 --> 00:00:06,000 +First caption + +2 +00:00:06,000 --> 00:00:14,000 +Middle caption + +3 +00:00:14,000 --> 00:00:20,000 +Last caption +SRT +"$AETHER_FFMPEG" -hide_banner -loglevel error -y \ + -f lavfi -i 'testsrc2=size=320x180:rate=25' \ + -f lavfi -i 'sine=frequency=440:sample_rate=48000' \ + -f srt -i "$AETHER_CAPTIONS" -map 0:v -map 1:a -map 2:s \ + -t 20 -c:v libx264 -preset ultrafast -pix_fmt yuv420p \ + -g 50 -keyint_min 50 -sc_threshold 0 -bf 3 -b:v 350k \ + -c:a aac -b:a 64k -c:s srt -metadata:s:s:0 language=eng -f matroska "$AETHER_FIXTURE" +AETHER_VOD_FIXTURE="$AETHER_FIXTURE" swift test --filter VODOpenSeekIntegrationTests diff --git a/Sources/AetherEngine/AetherEngine+AudibleReadback.swift b/Sources/AetherEngine/AetherEngine+AudibleReadback.swift index f76b799c0..4acbf8e93 100644 --- a/Sources/AetherEngine/AetherEngine+AudibleReadback.swift +++ b/Sources/AetherEngine/AetherEngine+AudibleReadback.swift @@ -17,7 +17,8 @@ extension AetherEngine { audibleReadbackTask?.cancel() guard let item = host.avPlayer.currentItem else { return } let servingMaster = nativeVideoSession?.servingMasterPlaylist ?? false - let served = nativeVideoSession?.provider?.masterAudioRendition?.language + let rendition = nativeVideoSession?.provider?.masterAudioRendition + let served = rendition?.language audibleReadbackTask = Task { @MainActor [weak self] in for await ready in host.$isReady.values where ready { break } guard !Task.isCancelled, let self, @@ -35,6 +36,7 @@ extension AetherEngine { EngineLog.emit( AudibleSelectionReadback.line( served: served, + declaredUntagged: rendition != nil && served == nil, servingMaster: servingMaster, groupPresent: group != nil, options: options, diff --git a/Sources/AetherEngine/AetherEngine+BackgroundAudioTestHooks.swift b/Sources/AetherEngine/AetherEngine+BackgroundAudioTestHooks.swift index 20661341f..8e7404f79 100644 --- a/Sources/AetherEngine/AetherEngine+BackgroundAudioTestHooks.swift +++ b/Sources/AetherEngine/AetherEngine+BackgroundAudioTestHooks.swift @@ -16,6 +16,13 @@ extension AetherEngine { } } + /// AE#739: invalidate the SW host's VideoToolbox session the way an iOS screen lock does. Returns false + /// when the active video decoder is not the hardware one. + @MainActor + public func invalidateSoftwareVideoSessionForTesting() -> Bool { + softwareHost?.invalidateVideoSessionForTesting() ?? false + } + /// Count of video frames the SW host has enqueued. Flat while background-audio-only drops video; rises /// again on foreground return. nil when the active backend is not the software host. @MainActor diff --git a/Sources/AetherEngine/AetherEngine+HeldPicture.swift b/Sources/AetherEngine/AetherEngine+HeldPicture.swift new file mode 100644 index 000000000..30ec6263a --- /dev/null +++ b/Sources/AetherEngine/AetherEngine+HeldPicture.swift @@ -0,0 +1,226 @@ +import Foundation +import AVFoundation +import Combine + +extension AetherEngine { + + /// The longest a held picture stays up when the next item never reports a first frame. The + /// rebuild has its own failure paths; this only keeps a frozen frame from outliving them. + static let heldPictureTimeoutSeconds: Double = 8 + + /// The longest an audio switch waits for a reshaped Dolby Vision still before it rebuilds without + /// one. The outgoing picture stays on screen, paused, for as long as the decode runs. + static let heldPictureDolbyVisionBudgetSeconds: Double = 3 + + /// The reshaped still's size. The RPU reshaping runs per output pixel on the CPU and dominates the + /// cost (measured on an M1 Pro, Profile 5 UHD: 1.53 s at 1920 wide, 0.40 s at 960, 0.11 s at 480, + /// plus ~0.24 s of decode per second the frame sits into its segment). The still stands for a few + /// hundred milliseconds under the host's loading scrim, where 960 does not read as soft. + static let heldPictureReshapedSize = CGSize(width: 960, height: 540) + + /// AE#711 follow-up: hold the picture on screen across the rebuild of an audio switch. + /// + /// Native: #711 keeps the old item mounted while the source reopens, but `replaceCurrentItem` + /// still drops the player layer to black until the next item decodes its first frame. The frame + /// is read from the paused old item (about 20 ms paused; a playing one needs ~300 ms before a + /// fresh output sees anything, which is why the caller pauses first). Dolby Vision without a + /// displayable base layer (Profile 5, AV1 Profile 10) cannot be taken from that output, which + /// vends the base layer; it is decoded from the resident segment instead, frame-accurately and + /// through the same RPU reshaping the scrub stills use (`DolbyVisionStillConverter`). + /// + /// Software: the rebuild replaces host and layer, and the old host's `stop()` flushes its layer to + /// black for the whole startup of the new one. The frame is read back from the renderer. + /// + /// Either way the picture is laid over the video until the next host reports one. Call before + /// `stopInternal`. + func holdPictureAcrossItemSwap() async { + releaseHeldPicture(reason: nil) + // A bound still view first: a host that binds one renders the native path through AVKit, and + // its `AetherPlayerView`, if any, is not what is on screen. + let surface: (any HeldStillSurface)? = boundStillView ?? boundView + let nativeSource = nativeHost + let softwareSource = nativeSource == nil ? softwareHost : nil + if let skip = surface == nil ? "no surface bound" + : (nativeSource == nil && softwareSource == nil) ? "no video host" + : Self.heldPictureSkipReason( + pictureInPictureActive: pictureInPictureActive, + externalPlaybackActive: Self.externalPlaybackActive(nativeSource)) { + heldPictureLastSkip = skip + EngineLog.emit("[AetherEngine] held picture: skipped (\(skip))", category: .engine) + return + } + guard let view = surface else { return } + heldPictureLastSkip = nil + let generation = loadGeneration + let started = ContinuousClock.now + + let held: (frame: CVPixelBuffer, isHDR: Bool, route: String)? + if let host = nativeSource { + if Self.heldPictureNeedsReshaping(videoFormat: videoFormat, dolbyVisionProfile: sourceDVProfile) { + held = await reshapedDolbyVisionStill(itemSeconds: host.avPlayer.currentTime().seconds) + .map { ($0, false, "Dolby Vision reshaped") } + } else { + held = await host.captureDisplayedFrame() + .map { ($0, Self.heldPictureIsHDR(videoFormat), "native output") } + } + } else if let host = softwareSource { + held = host.displayedFrame().map { ($0, Self.heldPictureIsHDR(videoFormat), "software renderer") } + } else { + held = nil + } + guard let held else { + heldPictureLastSkip = "no frame from the outgoing picture" + EngineLog.emit("[AetherEngine] held picture: no frame from the outgoing picture", category: .engine) + return + } + guard loadGeneration == generation, nativeHost === nativeSource, softwareHost === softwareSource, + (boundStillView ?? boundView) === view else { + heldPictureLastSkip = "superseded while the frame was read" + EngineLog.emit("[AetherEngine] held picture: superseded while the frame was read", category: .engine) + return + } + guard view.showStill(held.frame, gravity: videoGravity, isHDR: held.isHDR) else { + heldPictureLastSkip = "frame could not be wrapped for display" + EngineLog.emit("[AetherEngine] held picture: frame could not be wrapped for display", category: .engine) + return + } + heldPictureView = view + heldPictureLastRoute = held.route + heldPictureShownAt = .now + heldPictureToken &+= 1 + let token = heldPictureToken + if let host = nativeSource { + let heldSession = host.sessionID + heldPictureRelease = host.$isVideoReadyForDisplay + .filter { [weak host] ready in ready && (host?.sessionID ?? heldSession) != heldSession } + .first() + .sink { [weak self] _ in + MainActor.assumeIsolated { self?.releaseHeldPicture(reason: "first frame of the next item") } + } + } else { + heldPictureAwaitsSoftwareHost = true + } + Task { @MainActor [weak self] in + try? await Task.sleep(for: .seconds(Self.heldPictureTimeoutSeconds)) + guard let self, self.heldPictureToken == token, self.heldPictureView != nil else { return } + self.releaseHeldPicture(reason: "timeout") + } + EngineLog.emit( + "[AetherEngine] held picture: up after \(Self.milliseconds(ContinuousClock.now - started))ms " + + "(\(held.route), \(CVPixelBufferGetWidth(held.frame))x\(CVPixelBufferGetHeight(held.frame)), " + + "hdr=\(held.isHDR))", + category: .engine) + } + + /// visionOS has no external playback, and no `isExternalPlaybackActive` to ask. + private static func externalPlaybackActive(_ host: NativeAVPlayerHost?) -> Bool { + #if os(visionOS) + return false + #else + return host?.avPlayer.isExternalPlaybackActive ?? false + #endif + } + + /// Called where `loadSoftware` installs its host: a picture held over a software rebuild comes + /// down at that host's first frame. + func armHeldPictureRelease(onSoftwareHost host: SoftwarePlaybackHost) { + guard heldPictureAwaitsSoftwareHost, heldPictureView != nil else { return } + heldPictureAwaitsSoftwareHost = false + heldPictureRelease = host.$isVideoReadyForDisplay + .first(where: { $0 }) + .sink { [weak self] _ in + MainActor.assumeIsolated { self?.releaseHeldPicture(reason: "first frame of the next host") } + } + } + + /// The current native frame decoded from the resident segment and reshaped through its RPU. nil + /// when the segment is not resident, the decode fails, or it outruns + /// `heldPictureDolbyVisionBudgetSeconds`. + private func reshapedDolbyVisionStill(itemSeconds: Double) async -> CVPixelBuffer? { + guard !isLive, itemSeconds.isFinite, let session = nativeVideoSession, + let source = session.scrubThumbnailSource(atSeconds: itemSeconds), + let reader = source.makeReader() else { return nil } + let extractor = FrameExtractor(reader: reader, formatHint: "mp4") + let offset = max(0, itemSeconds - source.startSeconds) + let image = await withTaskGroup(of: CGImage?.self) { group -> CGImage? in + group.addTask { await extractor.snapshot(afterFirstFrameBy: offset, maxSize: Self.heldPictureReshapedSize) } + group.addTask { + try? await Task.sleep(for: .seconds(Self.heldPictureDolbyVisionBudgetSeconds)) + return nil + } + let first = await group.next() ?? nil + group.cancelAll() + return first + } + Task { await extractor.shutdown() } + return image.flatMap(Self.pixelBuffer(from:)) + } + + /// An sRGB still as an IOSurface-backed BGRA buffer, the shape a sample-buffer layer displays. + nonisolated static func pixelBuffer(from image: CGImage) -> CVPixelBuffer? { + let attributes: [String: Any] = [ + kCVPixelBufferIOSurfacePropertiesKey as String: [String: String](), + kCVPixelBufferCGImageCompatibilityKey as String: true, + kCVPixelBufferCGBitmapContextCompatibilityKey as String: true, + ] + var buffer: CVPixelBuffer? + guard CVPixelBufferCreate(kCFAllocatorDefault, image.width, image.height, kCVPixelFormatType_32BGRA, + attributes as CFDictionary, &buffer) == kCVReturnSuccess, + let buffer else { return nil } + CVPixelBufferLockBaseAddress(buffer, []) + defer { CVPixelBufferUnlockBaseAddress(buffer, []) } + guard let context = CGContext( + data: CVPixelBufferGetBaseAddress(buffer), width: image.width, height: image.height, + bitsPerComponent: 8, bytesPerRow: CVPixelBufferGetBytesPerRow(buffer), + space: CGColorSpace(name: CGColorSpace.sRGB) ?? CGColorSpaceCreateDeviceRGB(), + bitmapInfo: CGImageAlphaInfo.premultipliedFirst.rawValue | CGBitmapInfo.byteOrder32Little.rawValue + ) else { return nil } + context.draw(image, in: CGRect(x: 0, y: 0, width: image.width, height: image.height)) + CVBufferSetAttachment(buffer, kCVImageBufferColorPrimariesKey, kCVImageBufferColorPrimaries_ITU_R_709_2, .shouldPropagate) + CVBufferSetAttachment(buffer, kCVImageBufferTransferFunctionKey, kCVImageBufferTransferFunction_sRGB, .shouldPropagate) + return buffer + } + + /// Dolby Vision whose base layer has no displayable colour of its own: Profile 5, and AV1 + /// Profile 10, whose compatibility id is not known here (the reshaping path falls back to the + /// base layer itself when it finds no RPU). Every other profile's base layer is HDR10, HLG or + /// SDR and is held as the output vends it. + nonisolated static func heldPictureNeedsReshaping(videoFormat: VideoFormat, dolbyVisionProfile: Int?) -> Bool { + videoFormat == .dolbyVision && (dolbyVisionProfile == 5 || dolbyVisionProfile == 10) + } + + nonisolated static func heldPictureIsHDR(_ format: VideoFormat) -> Bool { + format != .sdr + } + + /// Takes the held picture down. `reason` nil is a silent clear (nothing was up, or a new hold + /// replaces it); every other release is logged with how long the picture stood. + func releaseHeldPicture(reason: String?) { + heldPictureRelease?.cancel() + heldPictureRelease = nil + heldPictureAwaitsSoftwareHost = false + guard let view = heldPictureView else { return } + view.clearStill() + heldPictureView = nil + heldPictureLastRelease = reason + if let reason, let shownAt = heldPictureShownAt { + EngineLog.emit( + "[AetherEngine] held picture: released after \(Self.milliseconds(ContinuousClock.now - shownAt))ms (\(reason))", + category: .engine) + } + heldPictureShownAt = nil + } + + /// Why no picture is held. PiP and external playback: the picture is not in this view. + nonisolated static func heldPictureSkipReason( + pictureInPictureActive: Bool, externalPlaybackActive: Bool + ) -> String? { + if pictureInPictureActive { return "picture in picture" } + if externalPlaybackActive { return "external playback" } + return nil + } + + private nonisolated static func milliseconds(_ duration: Duration) -> Int { + Int(duration.components.seconds * 1000 + duration.components.attoseconds / 1_000_000_000_000_000) + } +} diff --git a/Sources/AetherEngine/AetherEngine+Live.swift b/Sources/AetherEngine/AetherEngine+Live.swift index 903be119e..f5dff916f 100644 --- a/Sources/AetherEngine/AetherEngine+Live.swift +++ b/Sources/AetherEngine/AetherEngine+Live.swift @@ -8,8 +8,8 @@ extension AetherEngine { /// /// Two sessions can answer, and both read a buffer the session already holds rather than opening /// a second connection (a live source is forward-only, so a second demuxer could not seek it). - /// A native session decodes from its DVR segment cache after converting session time to raw - /// output via seam history. A software session has no such cache, so it decodes out of its own + /// A native session decodes from its DVR segment cache after converting stable session time to + /// raw output. A software session has no such cache, so it decodes out of its own /// packet ring (#544), which is the same buffer the scrubber seeks within. nil when neither is /// live, when the time is outside the resident window, or when the decode fails. public func liveScrubThumbnail(atSessionSeconds seconds: Double, maxWidth: Int = 320) async -> CGImage? { @@ -21,12 +21,10 @@ extension AetherEngine { // A zap between the request and the frame would hand the new channel the old one's picture. return loadGeneration == gen ? image : nil } - // seekableLiveRange is output-time + seam shift; segment table and tfdt live on raw output. Resolve newest seam (inverts $currentTime fold). - let outputSeconds: Double - outputSeconds = presentationAxis.itemSeconds(forSourceSeconds: seconds) - ?? (seconds - playlistShiftSeconds) + // Segment table and tfdt use continuous output time, including across source PTS rebases. + let outputSeconds = seconds - liveSessionShiftSeconds let gen = loadGeneration - let source = await Task.detached(priority: .userInitiated) { [session] in + let source = await BlockingWork.detached(priority: .userInitiated) { [session] in session.scrubThumbnailSource(atSeconds: outputSeconds) }.value guard let source else { return nil } @@ -58,7 +56,9 @@ extension AetherEngine { try? await Task.sleep(nanoseconds: 1_000_000_000) guard let self, let host else { return } guard self.isLive else { continue } - self.publishLiveWindow(edgeSessionTime: host.seekableEnd + self.playlistShiftSeconds) + guard !self.liveItemPlacementPending else { continue } + self.publishLiveWindow(edgeSessionTime: host.seekableEnd + + self.liveSessionShiftSeconds + self.liveItemAxisOffsetSeconds) } } } @@ -115,6 +115,8 @@ extension AetherEngine { /// floor plus a margin, or for live-only (no DVR) snap to the edge when far enough behind. func clampLiveResumeIfBehindWindow() { guard isLive, let w = liveWindow else { return } + let scheduledLoadGeneration = loadGeneration + let scheduledSeekGeneration = currentSeekGeneration let action = Self.liveResumeAction( clampsToWindow: loadedOptions.clampsLiveResumeToWindow, windowSeconds: w.windowSeconds, @@ -136,24 +138,34 @@ extension AetherEngine { ) } case .edgeSnap: - EngineLog.emit( - "[AetherEngine] live resume clamp: behind=\(behind)s window=live-only -> edge snap", - category: .session - ) - // The whole distance is skipped, and the resume is at the edge. - liveResumeClamped.send(LiveResumeClamp(skippedSeconds: w.behindLiveSeconds, - behindLiveSeconds: 0)) - Task { await self.seekToLiveEdge() } + Task { + guard loadGeneration == scheduledLoadGeneration, + currentSeekGeneration == scheduledSeekGeneration else { return } + EngineLog.emit( + "[AetherEngine] live resume clamp: behind=\(behind)s window=live-only -> edge snap", + category: .session + ) + // The whole distance is skipped, and the resume is at the edge. + liveResumeClamped.send(LiveResumeClamp(skippedSeconds: w.behindLiveSeconds, + behindLiveSeconds: 0)) + await self.seekToLiveEdge() + } case .seek(let t): - EngineLog.emit( - "[AetherEngine] live resume clamp: behind=\(behind)s window=\(window) " - + "-> seek \(String(format: "%.1f", t))", - category: .session - ) - liveResumeClamped.send(LiveResumeClamp( - skippedSeconds: Swift.max(0, t - (w.edgeTime - w.behindLiveSeconds)), - behindLiveSeconds: Swift.max(0, w.edgeTime - t))) - Task { await self.seek(to: t) } + Task { + // An explicit Return to Live (or a newer scrub) owns the clock. + // A clamp decided by an earlier play() must not seek it backward. + guard loadGeneration == scheduledLoadGeneration, + currentSeekGeneration == scheduledSeekGeneration else { return } + EngineLog.emit( + "[AetherEngine] live resume clamp: behind=\(behind)s window=\(window) " + + "-> seek \(String(format: "%.1f", t))", + category: .session + ) + liveResumeClamped.send(LiveResumeClamp( + skippedSeconds: Swift.max(0, t - (w.edgeTime - w.behindLiveSeconds)), + behindLiveSeconds: Swift.max(0, w.edgeTime - t))) + await self.seek(to: t) + } } } @@ -161,13 +173,11 @@ extension AetherEngine { /// the live surfaces speak. nil on every path with no such cache to ask (software live), which /// leaves `seekableLiveRange` on window arithmetic exactly as before. /// - /// Same axis conversion as `liveScrubThumbnail`, inverted: the segment table and its `startSeconds` - /// live on raw output, `seekableLiveRange` is output plus the seam shift. + /// Same stable output-to-session conversion as `liveScrubThumbnail`, inverted. func residentLiveFloorSessionSeconds() -> Double? { guard let session = nativeVideoSession, let outputFloor = session.residentFloorOutputSeconds() else { return nil } - return presentationAxis.sourceSeconds(forItemSeconds: outputFloor) - ?? (outputFloor + playlistShiftSeconds) + return outputFloor + liveSessionShiftSeconds } /// AE#446 round 4: measure how far the current item's own timeline sits below the session's. @@ -245,7 +255,7 @@ extension AetherEngine { let producerFloor = residentLiveFloorSessionSeconds() else { return } let offset = Self.liveItemAxisOffset(producerFloorSession: producerFloor, itemSeekableStart: host.seekableStart, - shift: playlistShiftSeconds) + shift: liveSessionShiftSeconds) guard offset.isFinite else { return } liveItemAxisOffsetGeneration = host.itemGeneration liveItemAxisOffsetSeconds = offset @@ -347,7 +357,7 @@ extension AetherEngine { } let reconstructed = Self.liveItemAxisOffset(producerFloorSession: producerFloor, itemSeekableStart: host.seekableStart, - shift: playlistShiftSeconds) + shift: liveSessionShiftSeconds) EngineLog.emit( "[AetherEngine] #446 the reconstruction this replaces would have said " + "\(String(format: "%.2f", reconstructed))s, \(String(format: "%.2f", reconstructed - stated))s " @@ -451,7 +461,7 @@ extension AetherEngine { EngineLog.emit( "[AetherEngine] #446 placement audit: item clock \(String(format: "%.2f", nativeClockSeconds))s " + "in item range \(String(format: "%.2f", host.seekableStart))..\(String(format: "%.2f", host.seekableEnd))s, " - + "shift \(String(format: "%.2f", playlistShiftSeconds))s + item offset " + + "session shift \(String(format: "%.2f", liveSessionShiftSeconds))s + item offset " + "\(String(format: "%.2f", liveItemAxisOffsetSeconds))s -> session \(String(format: "%.2f", currentTime))s; " + "the producer holds " + (producer.map { "\(String(format: "%.2f", $0.lowerBound))..\(String(format: "%.2f", $0.upperBound))s" } ?? "nothing it can state"), @@ -472,27 +482,111 @@ extension AetherEngine { guard let session = nativeVideoSession, let floorOutput = session.residentFloorOutputSeconds(), let ceilingOutput = session.residentCeilingOutputSeconds() else { return nil } - let floor = presentationAxis.sourceSeconds(forItemSeconds: floorOutput) - ?? (floorOutput + playlistShiftSeconds) - let ceiling = presentationAxis.sourceSeconds(forItemSeconds: ceilingOutput) - ?? (ceilingOutput + playlistShiftSeconds) + let floor = floorOutput + liveSessionShiftSeconds + let ceiling = ceilingOutput + liveSessionShiftSeconds guard ceiling >= floor else { return nil } return floor...ceiling } /// AE#442: the TARGETDURATION the live playlist is serving, nil on every path that serves none /// (remote HLS live, the software live path, and before the first playlist build). - var liveTargetDurationSeconds: Double? { + public var liveTargetDurationSeconds: Double? { nativeVideoSession?.sealedLiveTargetDurationSeconds().map(Double.init) } - /// Publish `liveEdgeTime`, `seekableLiveRange`, `isAtLiveEdge`, `behindLiveSeconds`. Path-agnostic; no-op when no live window is active. - @MainActor + /// The current native item's usable live edge on the engine's display timeline. + /// Nil before the item has a range and on software routes. Uses the asynchronous + /// host mirror rather than AVPlayerItem's synchronous seekableTimeRanges getter. + /// If that mirror predates retained history, only already-played resident media is admitted. + public var currentItemLiveEdgeTime: Double? { + guard isLive, videoRoute != .software, nativeItemSeekableEnd > 0 else { return nil } + let edge = nativeItemSeekableEnd + liveSessionShiftSeconds + liveItemAxisOffsetSeconds + guard edge.isFinite else { return nil } + // The effective allowance, which a lease renewal or expiry moves (#714), not the load option. + if liveWindow?.windowSeconds != nil, + let fallback = Self.nativePlayedResidentEdge(reportedEdge: edge, playedTime: currentTime, + publishedEdge: liveWindow?.edgeTime ?? currentTime, + residentRange: residentLiveRangeSessionSeconds()) { + return fallback + } + return edge + } + + /// The same session-axis fallback for publication and an actual native seek. A stale + /// item edge cannot disqualify already-played resident history, and a prefetched ceiling + /// cannot create history. Preserve the published played frontier across a backward seek. + nonisolated static func nativePlayedResidentEdge( + reportedEdge: Double, playedTime: Double, publishedEdge: Double, + residentRange: ClosedRange? + ) -> Double? { + guard let resident = residentRange, + resident.lowerBound.isFinite, resident.upperBound.isFinite, + reportedEdge.isFinite, reportedEdge <= resident.lowerBound, + playedTime.isFinite, publishedEdge.isFinite else { return nil } + return min(max(max(playedTime, publishedEdge), resident.lowerBound), resident.upperBound) + } + + /// Update native HLS retention without load/reload, source requests, or a second player. + /// Supply a fresh temporary-volume capacity and its monotonic expiry deadline. + /// False for software/remote/unready sessions. Their conservative load options are untouched. + @discardableResult + public func setNativeLiveDVRLimits(_ limits: LiveDVRLimits, availableCapacityBytes: Int64?) -> Bool { + guard isLive, isSessionReady, videoRoute == .loopback, let session = nativeVideoSession, + session.setNativeLiveDVRLimits(limits, availableCapacityBytes: availableCapacityBytes) else { return false } + // Capacity lease renewal alone must not add clock publications to the existing tick rate. + if liveWindow?.windowSeconds != session.nativeLiveDVRWindow?.windowSeconds { + publishLiveWindow(edgeSessionTime: liveWindow?.edgeTime ?? currentTime) + } + return true + } + + /// Bound the software packet spool without stopping its source, decoders or clock. + /// Requires LoadOptions.softwareDVRRetention. Expiry withdraws optional history + /// and falls back to the caller-selected playback cushion. + @discardableResult + public func setSoftwareLiveDVRLimits(_ limits: LiveDVRLimits, availableCapacityBytes: Int64?) -> Bool { + guard isLive, isSessionReady, videoRoute == .software, let host = softwareHost else { return false } + return host.setLiveDVRLimits(limits, availableBytes: availableCapacityBytes) + } + public var softwareLiveDVRBytes: Int64? { softwareHost?.liveDVRBytes.map(Int64.init) } + + /// Finite pinned playback payload that may exceed the optional retention allowance. + /// Does not include muxer staging, init/subtitle data, AVPlayer buffers, or recording output. + public var nativeLiveDVRMandatoryBytes: Int64? { + guard isLive, videoRoute == .loopback, let session = nativeVideoSession else { return nil } + return Int64(session.nativeLiveDVRMandatoryBytes) + } + + /// Publish the live timeline after reconciling actual resident history. func publishLiveWindow(edgeSessionTime: Double) { guard var w = liveWindow else { return } - w.noteEdge(edgeSessionTime) + if videoRoute == .loopback, let limits = nativeVideoSession?.nativeLiveDVRWindow { + w.setWindowSeconds(limits.windowSeconds) + } else if videoRoute == .software { + // The software spool owns both actual retained history and capacity expiry. + // A route transition never transfers expanded native retention into it. + w.setWindowSeconds(softwareHost?.liveDVRWindowSeconds) + } + // Resident media bounds the allowance on both playback routes. + var residentFloor = videoRoute == .software ? softwareHost?.liveDVRResidentFloor : residentLiveFloorSessionSeconds() + // An empty/delayed AVPlayer seekableTimeRanges mirror yields only the item's zero + // (plus its axis offset). It must not pin a ready native DVR window at that zero + // while its real cache and played clock advance. Admit only already-played, + // contiguous resident media; never promote the producer's prefetched frontier. + // `w.windowSeconds` is the effective (renewed or expired) allowance set just above. + var reportedEdge = edgeSessionTime + if videoRoute == .loopback, w.windowSeconds != nil, + let floor = residentFloor, floor.isFinite, reportedEdge <= floor, + let resident = residentLiveRangeSessionSeconds(), + let fallback = Self.nativePlayedResidentEdge( + reportedEdge: reportedEdge, playedTime: currentTime, + publishedEdge: w.edgeTime, residentRange: resident) { + residentFloor = resident.lowerBound + reportedEdge = fallback + } + w.noteEdge(reportedEdge) w.notePlayhead(currentTime) - w.noteResidentFloor(residentLiveFloorSessionSeconds() ?? softwareHost?.dvrResidentFloorSessionSeconds) + w.noteResidentFloor(residentFloor) // Sodalite#104 round 4: the cadence the playlist declares, which outranks how the source // happened to deliver. nil on the paths that serve no playlist of ours. w.noteTargetDuration(liveTargetDurationSeconds) @@ -574,7 +668,7 @@ extension AetherEngine { "[AetherEngine] #524 the client is running thin: it holds " + "\(String(format: "%.2f", ahead))s of fetched runway, playhead " + "\(String(format: "%.2f", playhead))s against a seekable edge of " - + "\(String(format: "%.2f", edge))s (which already carries the holdback)", + + "\(String(format: "%.2f", edge))s", category: .session ) } @@ -651,9 +745,8 @@ extension AetherEngine { /// presenting the old one lands the seek BACKWARD by their difference (reported: 47 s of /// re-watched content, 49.06 s of rebase). /// - /// So the edge comes from the item being seeked, and the session-to-item conversion is the - /// seam-aware one the rest of the engine already uses, which reads the shift that was in force for - /// THIS position rather than the newest one the producer has moved to. + /// The edge comes from the item being seeked. For loopback live, callers pass its stable + /// session axis: source PTS seams cannot invert a timestamp rollback unambiguously. nonisolated static func liveSeekLanding( requested: Double, window: LiveWindow, @@ -662,11 +755,23 @@ extension AetherEngine { axis: PresentationAxisMap, origin: SeekOrigin = .host, residentRange: ClosedRange? = nil, - itemAxisOffset: Double = 0 + itemAxisOffset: Double = 0, + nativePlayedTime: Double? = nil ) -> (sessionTarget: Double, clockTarget: Double) { // An item with no seekable range of its own yet has nothing to sample; the window's own edge // is then the only edge there is, and clamping against `shift` alone would collapse the range. - let edge = itemEnd > 0 ? itemEnd + shift + itemAxisOffset : window.edgeTime + let reportedEdge = itemEnd + shift + itemAxisOffset + let playedResidentEdge = nativePlayedTime.flatMap { + Self.nativePlayedResidentEdge(reportedEdge: reportedEdge, playedTime: $0, + publishedEdge: window.edgeTime, residentRange: residentRange) + } + // Positive but stale mirrors need the same fallback as publication. A valid positive + // item range still clamps against the item's own edge, preserving rejoin/axis semantics. + let edge = playedResidentEdge ?? (itemEnd > 0 ? reportedEdge : window.edgeTime) + var landingWindow = window + if playedResidentEdge != nil, let resident = residentRange { + landingWindow.noteResidentFloor(resident.lowerBound) + } // AE#446 round 4: a host scrub is bound by what the session ADVERTISES, and the engine's own // rejoin by what the producer HOLDS. They are different questions, and at the moment a rejoin // runs they have different answers: the advertised range is measured against an edge that is @@ -677,13 +782,18 @@ extension AetherEngine { if origin == .liveRejoin, let resident = residentRange { sessionTarget = Swift.min(Swift.max(requested, resident.lowerBound), resident.upperBound) } else { - sessionTarget = window.clamp(requested, edge: edge) + sessionTarget = landingWindow.clamp(requested, edge: edge) } // AE#446 round 4: and then down onto the item's own axis, which for an item attached after // the window slid begins above the session's zero. See `measureLiveItemAxisOffset`. - let clockTarget = Swift.max( + let mappedClockTarget = Swift.max( 0, (axis.itemSeconds(forSourceSeconds: sessionTarget) ?? (sessionTarget - shift)) - itemAxisOffset) + // Floating-point axis inversion can put an edge seek a few picoseconds beyond the + // item's measured end. Keep host seeks within that end; stale-edge recovery and live + // rejoin deliberately use their resident bounds instead. + let clockTarget = origin == .host && itemEnd > 0 && playedResidentEdge == nil + ? Swift.min(mappedClockTarget, itemEnd) : mappedClockTarget return (sessionTarget, clockTarget) } @@ -741,16 +851,19 @@ extension AetherEngine { requested: sessionTarget, window: window, itemEnd: host.seekableEnd, - shift: playlistShiftSeconds, - axis: presentationAxis, + shift: liveSessionShiftSeconds, + axis: liveSessionSeekAxis, origin: .liveRejoin, residentRange: residentLiveRangeSessionSeconds(), itemAxisOffset: liveItemAxisOffsetSeconds ).clockTarget } - /// Seek to the current live edge. No-op when not live. - public func seekToLiveEdge() async { + /// Seek behind the current live edge by a caller-selected offset, clamped to + /// retained media. Zero preserves the default edge-seek behavior. Negative or + /// nonfinite offsets are treated as zero; choosing a safety margin belongs to the host. + public func seekToLiveEdge(offsetSeconds: Double = 0) async { + let offset = offsetSeconds.isFinite ? Swift.max(0, offsetSeconds) : 0 // Sodalite#104 round 3: both early exits discard a press the viewer made, so both say so, the // same way `seek(to:)` logs its refusals. Silence here reads exactly like a press that never // arrived. @@ -759,20 +872,24 @@ extension AetherEngine { category: .engine) return } - // Live-only (no DVR window): seek(to:) refuses; drive native host directly to seekableEnd as the recovery move after eviction. + // Live-only (no DVR window): seek(to:) refuses; drive the native host directly. guard w.windowSeconds != nil else { guard let host = nativeHost else { EngineLog.emit("[AetherEngine] seekToLiveEdge() ignored: live-only session with no native item to snap", category: .engine) return } - let clockTarget = max(0, host.seekableEnd) + let edge = Swift.max(0, host.seekableEnd) + let floor = Swift.min(edge, Swift.max(0, host.seekableStart)) + let clockTarget = Swift.max(floor, edge - offset) EngineLog.emit( - "[AetherEngine] live-only edge snap: clockTarget=\(String(format: "%.1f", clockTarget))", + "[AetherEngine] live-only edge seek: target=\(String(format: "%.1f", clockTarget)) " + + "edge=\(String(format: "%.1f", host.seekableEnd)) " + + "offset=\(String(format: "%.1f", offset))", category: .engine ) let loadGen = loadGeneration - let seekGen = currentSeekGeneration + let seekGen = advanceSeekGeneration() await host.seek(to: clockTarget) // Audit CORE-7: the native host survives a native-to-native zap, so this seek can finish // against the next channel's item, and a scrub started meanwhile owns the clock too. @@ -782,10 +899,12 @@ extension AetherEngine { return } nativeClockSeconds = clockTarget - clock.currentTime = clockTarget + playlistShiftSeconds - clock.sourceTime = currentTime + clock.currentTime = clockTarget + liveSessionShiftSeconds + liveItemAxisOffsetSeconds return } - await seek(to: w.edgeTime) + let edge = Swift.min(w.edgeTime, currentItemLiveEdgeTime ?? w.edgeTime) + let floor = w.seekableRange(edge: edge)?.lowerBound ?? edge + let target = Swift.max(floor, edge - offset) + await seek(to: target) } } diff --git a/Sources/AetherEngine/AetherEngine+LiveSubtitleRenditions.swift b/Sources/AetherEngine/AetherEngine+LiveSubtitleRenditions.swift index 71916cdd2..f2a3fddb0 100644 --- a/Sources/AetherEngine/AetherEngine+LiveSubtitleRenditions.swift +++ b/Sources/AetherEngine/AetherEngine+LiveSubtitleRenditions.swift @@ -133,7 +133,7 @@ extension AetherEngine { // that is hours behind the picture and gets pruned on arrival. Everything older than // the backfill span is marked seen without being fetched, so the loop starts at the // playhead and the poll after it only ever sees the new tail. - let playheadWall = anchorWall.addingTimeInterval(clock.currentTime - anchorEngineTime) + let playheadWall = anchorWall.addingTimeInterval(clock.currentTime - liveSessionShiftSeconds) let backfillFrom = playheadWall.addingTimeInterval(-Self.liveSubtitleBackfillSeconds) for segment in media.segments { if let end = segment.programDateTime?.addingTimeInterval(segment.duration), @@ -195,7 +195,7 @@ extension AetherEngine { /// Keep the published array bounded: a channel left running for hours would otherwise carry every /// line it ever showed, and #271 is the standing reminder that this array is paid for per publish. private func pruned(_ cues: [SubtitleCue]) -> [SubtitleCue] { - let horizon = clock.currentTime - (loadedOptions.dvrWindowSeconds ?? 600) - 60 + let horizon = clock.sourceTime - (loadedOptions.dvrWindowSeconds ?? 600) - 60 guard horizon > 0 else { return Self.capLiveSubtitleCues(cues) } return Self.capLiveSubtitleCues(cues.filter { $0.endTime >= horizon }) } diff --git a/Sources/AetherEngine/AetherEngine+Loading.swift b/Sources/AetherEngine/AetherEngine+Loading.swift index a8e08f970..74209434f 100644 --- a/Sources/AetherEngine/AetherEngine+Loading.swift +++ b/Sources/AetherEngine/AetherEngine+Loading.swift @@ -36,13 +36,15 @@ extension AetherEngine { if pendingRecoverySeekClockTarget == nil { // AE#105: fold the disc's clip-0 STC base back out so the published playhead sits on the same // 0-based axis as the MPLS duration (origin 0 for normal/live -> no-op). - clock.currentTime = PresentationAxis.display( - sourcePTS: value + playlistShiftSeconds + liveItemAxisOffsetSeconds, - origin: displayOrigin(forShift: playlistShiftSeconds)) + clock.currentTime = isLive && videoRoute == .loopback + ? value + liveSessionShiftSeconds + liveItemAxisOffsetSeconds + : PresentationAxis.display( + sourcePTS: value + playlistShiftSeconds + liveItemAxisOffsetSeconds, + origin: displayOrigin(forShift: playlistShiftSeconds)) } - // Live edge must fold with the same playlistShiftSeconds as the playhead; opposite sign would make behindLiveSeconds meaningless. + // The live edge and playhead use the same stable session shift across source PTS rebases. if isLive { - publishLiveWindow(edgeSessionTime: (nativeHost?.seekableEnd ?? 0) + playlistShiftSeconds + publishLiveWindow(edgeSessionTime: nativeItemSeekableEnd + liveSessionShiftSeconds + liveItemAxisOffsetSeconds) } } @@ -321,11 +323,28 @@ extension AetherEngine { /// which is the point, since re-creating it is what breaks AVKit's MediaRemote registration. func makeNativeHost() -> NativeAVPlayerHost { #if os(tvOS) || os(iOS) - return NativeAVPlayerHost(ownsNowPlayingSession: Self.ownsNowPlaying( + let host = NativeAVPlayerHost(ownsNowPlayingSession: Self.ownsNowPlaying( hostOptIn: ownsVideoNowPlayingSession, role: loadedOptions.sharedOutputRole)) #else - return NativeAVPlayerHost() + let host = NativeAVPlayerHost() #endif + host.pictureInPictureActive = pictureInPictureActive + host.onVideoPresentationRecovery = { [weak self, weak host] action, position in + guard let self, let host, self.nativeHost === host, + self.state == .playing, !self.pictureInPictureActive, + self.pendingRecoverySeekClockTarget == nil, + !self.liveItemPlacementPending else { return } + switch action { + case .nudge: + self.reengageStalledConsumer(position: position, trigger: "video presentation") + case .reload: + // A live native URL with no retained session cannot promise this placement. + guard !self.isLive || self.nativeVideoSession != nil else { return } + self.reloadStalledConsumerItem(position: position, + preserveLivePosition: self.isLive ? self.currentTime : nil) + } + } + return host } /// Replay the staged Now-Playing identity onto a host, and re-assert session ownership. The @@ -864,6 +883,9 @@ extension AetherEngine { // AE#195/#208: the session resolves the cut target and enables the bounded first-manifest // path only for the host's explicit fastZap profile. liveJoinProfile: loadedOptions.liveJoinProfile, + sourceOpenPolicy: loadedOptions.sourceOpenPolicy, + liveStartupGraceSeconds: loadedOptions.liveStartupGraceSeconds, + liveStartupSingleSegmentMinimumSeconds: loadedOptions.liveStartupSingleSegmentMinimumSeconds, blockingReloadOverride: loadedOptions.liveBlockingReload, liveCadenceObservation: liveCadenceObservation, liveClosedCadenceObservation: liveClosedCadenceObservation, @@ -887,6 +909,7 @@ extension AetherEngine { ) // AE#464: every producer this session builds reads it off the session. Set before start(). session.audioDelaySeconds = loadedOptions.audioDelaySeconds + session.servesSegmentsProgressively = loadedOptions.progressiveSegmentDelivery // #240: the pump claims the source link through this gate while it is fetching, so the // subtitle side readers can stay out of its way. Set before start(). session.sideReaderLinkGate = sideReaderLinkGate @@ -927,6 +950,9 @@ extension AetherEngine { // buffer, and has to keep folding with the previous shift. Collapsing the history here (as this // did before) hands every consumer the new shift for old-epoch bytes. if self.isLive { + if self.liveDisplayShiftSeconds == nil { + self.liveDisplayShiftSeconds = seconds + } self.setPresentationAxis(.anchored(shiftSeconds: seconds)) } else { var map = self.presentationAxis @@ -944,9 +970,12 @@ extension AetherEngine { // AE#422: read off-main before building the line (see `avPlayerBufferAheadSeconds`). let avBufAhead = await self.avPlayerBufferAheadSeconds() // Re-fold immediately so currentTime doesn't lag the next periodic tick (origin-corrected). - self.clock.currentTime = PresentationAxis.display( - sourcePTS: self.nativeClockSeconds + activeShift, - origin: self.displayOrigin(forShift: activeShift)) + self.clock.currentTime = self.isLive && self.videoRoute == .loopback + ? self.nativeClockSeconds + self.liveSessionShiftSeconds + + self.liveItemAxisOffsetSeconds + : PresentationAxis.display( + sourcePTS: self.nativeClockSeconds + activeShift, + origin: self.displayOrigin(forShift: activeShift)) // sourceTime re-folds on next $renderedTime tick; keeping it there tracks the rendered picture, not the optimistic clock (#49). EngineLog.emit( "[AetherEngine] VOD shift published: \(String(format: "%.3f", seconds))s " @@ -974,9 +1003,7 @@ extension AetherEngine { guard let self = self else { return } // Fold playlist-axis segment time onto the published display axis (#38); the origin keeps a disc // scrub target 0-based like currentTime (0 off disc). nil clears without disturbing the last value. - let target = playlistTime.map { - PresentationAxis.display(sourcePTS: $0 + self.playlistShiftSeconds, origin: self.sourcePresentationOrigin) - } + let target = playlistTime.map { self.displaySeconds(forPlaylistSeconds: $0) } self.setNativeScrubSeek(inFlight: inFlight, target: target) // #112: a producer restart settles here (out-of-range fetch on a fast-forward, or a wedge reconcile) // without going through seek()'s landing, so the embedded PGS side reader is never re-armed. Give it @@ -1038,13 +1065,47 @@ extension AetherEngine { session.onPlaylistShiftRebased = { [weak self] seconds, seamOutputSeconds in self?.hop(for: generation) { [weak self] in guard let self = self else { return } - // Program boundary: producer rebased but AVPlayer is still rendering old program (buffer + holdback). Record the seam so $currentTime resolves the active shift from history, keeping currentTime/sourceTime behind what is on screen. Backward DVR seeks re-apply the pre-seam shift. Seams append in output-timeline order (continuation dts is monotonic). + // Program boundary: keep the source-PTS seam for rendered cues while the item clock + // continues forward. The live display/seek axis stays on its initial shift. var map = self.presentationAxis // Cap inside appendSeam; losing the oldest only reduces fidelity for DVR positions past 60+ program boundaries. map.appendSeam(shiftSeconds: seconds, activatingAtItemSeconds: seamOutputSeconds) self.setPresentationAxis(map) } } + session.onLiveSourceReopening = { [weak self, weak session] in + self?.hop(for: generation) { [weak self, weak session] in + guard let self, let session, self.nativeVideoSession === session else { return } + self.endRecordingIfRunning(reason: .sourceReset) + } + } + // Unset, the session reports the exhaustion through `onLiveSourceReset`: a host that never + // subscribed to `liveSourceReplayExhausted` would otherwise hold the last frame for good. + if loadedOptions.hostRetriesExhaustedLiveReplay { + session.onLiveSourceReplayExhausted = { [weak self, weak session] in + self?.hop(for: generation) { [weak self, weak session] in + guard let self, let session, self.nativeVideoSession === session else { return } + self.noteLiveSourceGivenUp() + self.endRecordingIfRunning(reason: .sourceReset) + self.liveSourceReplayExhausted.send() + } + } + } + session.onLivePlaylistRenewal = { [weak self, weak session] in + self?.hop(for: generation) { [weak self, weak session] in + guard let self, let session, self.nativeVideoSession === session, + let oldURL = (self.currentAVPlayer?.currentItem?.asset as? AVURLAsset)?.url, + let url = session.renewedLivePlaylistURL(replacing: oldURL), url != oldURL else { return } + self.stallReengageTask?.cancel() + self.stallReengageTask = nil + self.liveOutageResumeWatcher?.cancel() + self.liveOutageResumeWatcher = nil + session.clearLiveOutageEndlist() + self.reloadStalledConsumerItem(position: self.renderedPositionMirror.get(), + allowPausedConsumer: true, liveRejoinOverride: self.currentTime, + replacementURL: url) + } + } session.onLiveSourceReset = { [weak self, weak session] in Task { @MainActor in // Stale session (superseded by a zap) must not retune the current channel. @@ -1269,7 +1330,7 @@ extension AetherEngine { session.initialStartSeconds = startPosition // session.start() opens its own Demuxer + prewarm seek (~1-3 s on slow CDN); detach so @MainActor doesn't block. - var playbackURL = try await Task.detached(priority: .userInitiated) { [session] in + var playbackURL = try await BlockingWork.detached(priority: .userInitiated) { [session] in try session.start() }.value // AirPlay (#86): while external playback is active, serve the loopback over the device's LAN IP so @@ -1284,6 +1345,7 @@ extension AetherEngine { try checkLoadCurrent(generation) } self.nativeVideoSession = session + isSourceSeekable = session.openedSourceIsSeekable // AE#270: anchor the display axis on the container's own start time, which is what `duration` is // measured from. Taking it from the session rather than latching the first published shift keeps a // 0-based source byte-identical to the pre-#270 behaviour: the shift also carries the producer's @@ -1444,8 +1506,10 @@ extension AetherEngine { // rendered frame. Drawn against the 0-based duration, so map onto the display axis to keep // the buffer bar aligned with currentTime (0 off disc). AE#105, #207 follow-up. // See docs issue #33 follow-up. - let renderedDisplay = PresentationAxis.display( - sourcePTS: value + shift, origin: self.displayOrigin(forShift: shift)) + let renderedDisplay = self.isLive && self.videoRoute == .loopback + ? value + self.liveSessionShiftSeconds + self.liveItemAxisOffsetSeconds + : PresentationAxis.display( + sourcePTS: value + shift, origin: self.displayOrigin(forShift: shift)) let readAhead = self.nativeVideoSession? .contiguousForwardReadAheadSeconds(playlistSeconds: value) ?? 0 self.clock.bufferedPosition = renderedDisplay + max(0, readAhead) @@ -1822,7 +1886,9 @@ extension AetherEngine { // AE#520: the session knows whether the bitstream it stream-copied carries JOC; // the HDMI route cannot, because Atmos passthrough and a stereo LPCM route // report the same two channels. - audioIsAtmosStreamCopy: nativeVideoSession?.audioIsAtmosStreamCopy == true)) + audioIsAtmosStreamCopy: nativeVideoSession?.audioIsAtmosStreamCopy == true, + nativeVideoFrameDiagnostics: loadedOptions.nativeVideoFrameDiagnostics, + nativeVideoFrameRecovery: loadedOptions.nativeVideoFrameRecovery)) forceNativeLegibleDeselectedUntilHostSelects() // Sodalite#175: from the session's own pick, since a track-switch reload has no active index yet. let sessionAudioPick = nativeVideoSession.map(\.activeAudioSourceStreamIndex).flatMap { $0 >= 0 ? Int($0) : nil } @@ -1942,6 +2008,7 @@ extension AetherEngine { self?.publishLiveWindow(edgeSessionTime: edge) } self.softwareHost = host + armHeldPictureRelease(onSoftwareHost: host) // #311: a load builds a new host and a new renderer, so an observer installed once by the // host app has to be carried across the seam, exactly as the native session does at load. host.setVideoFrameTimeObserver(softwareVideoFrameTimeObserver) @@ -2035,6 +2102,7 @@ extension AetherEngine { let maxAnalyzeDuration = loadedOptions.maxAnalyzeDuration let sequentialOrigin = loadedOptions.sequentialOrigin let heldSourceConnection = loadedOptions.heldSourceConnection + let sourceOpenPolicy = loadedOptions.sourceOpenPolicy let declaredDuration = loadedOptions.declaredDurationSeconds // Built on the main actor, captured into the detach: surfaces source stall/reconnect to playbackPhase (#85). let networkPhaseSink: @Sendable (ReaderNetworkPhase) -> Void = { [weak self] phase in @@ -2042,14 +2110,15 @@ extension AetherEngine { } if loadGeneration == generation { recordStartupCheckpoint(.sessionConstructed) } // #361 let forwardBufferSegments = loadedOptions.forwardBufferSegments - try await Task.detached(priority: .userInitiated) { + let dvrRetention = loadedOptions.softwareDVRRetention + try await BlockingWork.detached(priority: .userInitiated) { [host, preopenedDemuxer, url, sourceHTTPHeaders, isLive, dvrWindowSeconds, probesize, maxAnalyzeDuration, sequentialOrigin, heldSourceConnection, declaredDuration, networkPhaseSink] in let dem: Demuxer if let pre = preopenedDemuxer { dem = pre } else { dem = Demuxer() - try dem.open(url: url, extraHeaders: sourceHTTPHeaders, profile: .playback.withProbeBudget(probesize: probesize, maxAnalyzeDuration: maxAnalyzeDuration).withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDuration).withHeldSourceConnection(heldSourceConnection), isLive: isLive) + try dem.open(url: url, extraHeaders: sourceHTTPHeaders, profile: .playback.withProbeBudget(probesize: probesize, maxAnalyzeDuration: maxAnalyzeDuration).withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDuration).withHeldSourceConnection(heldSourceConnection).withSourceOpenPolicy(sourceOpenPolicy), isLive: isLive) } dem.onNetworkPhaseChanged = networkPhaseSink try await host.load( @@ -2058,6 +2127,7 @@ extension AetherEngine { audioSourceStreamIndex: audioSourceStreamIndex, isLive: isLive, dvrWindowSeconds: dvrWindowSeconds, + dvrRetention: dvrRetention, forwardBufferSegments: forwardBufferSegments ) }.value @@ -2113,20 +2183,21 @@ extension AetherEngine { let maxAnalyzeDuration = loadedOptions.maxAnalyzeDuration let sequentialOrigin = loadedOptions.sequentialOrigin let heldSourceConnection = loadedOptions.heldSourceConnection + let sourceOpenPolicy = loadedOptions.sourceOpenPolicy let declaredDuration = loadedOptions.declaredDurationSeconds // Built on the main actor, captured into the detach: surfaces source stall/reconnect to playbackPhase (#85). let networkPhaseSink: @Sendable (ReaderNetworkPhase) -> Void = { [weak self] phase in self?.hop(for: generation) { [weak self] in self?.setReaderNetworkPhase(phase) } // audit Vcore-101 } if loadGeneration == generation { recordStartupCheckpoint(.sessionConstructed) } // #361 - try await Task.detached(priority: .userInitiated) { + try await BlockingWork.detached(priority: .userInitiated) { [host, preopenedDemuxer, url, sourceHTTPHeaders, probesize, maxAnalyzeDuration, sequentialOrigin, heldSourceConnection, declaredDuration, networkPhaseSink] in let dem: Demuxer if let pre = preopenedDemuxer { dem = pre } else { dem = Demuxer() - try dem.open(url: url, extraHeaders: sourceHTTPHeaders, profile: .playback.withProbeBudget(probesize: probesize, maxAnalyzeDuration: maxAnalyzeDuration).withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDuration).withHeldSourceConnection(heldSourceConnection)) + try dem.open(url: url, extraHeaders: sourceHTTPHeaders, profile: .playback.withProbeBudget(probesize: probesize, maxAnalyzeDuration: maxAnalyzeDuration).withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDuration).withHeldSourceConnection(heldSourceConnection).withSourceOpenPolicy(sourceOpenPolicy)) } dem.onNetworkPhaseChanged = networkPhaseSink try await host.load( @@ -2373,7 +2444,19 @@ extension AetherEngine { // invalidated by a media-services reset (audit LIF-104). let keepAudioSwitchItem = audioStreamIndex != nil && discTitleIDOverride == nil && !targetSoftwarePath && !mediaServicesWereReset && nativeHost?.avPlayer.currentItem != nil - if keepAudioSwitchItem { nativeHost?.pause() } + // The software path rebuilds its host and layer, and `stop()` flushes the old one to black. + let holdsSoftwarePicture = audioStreamIndex != nil && discTitleIDOverride == nil + && targetSoftwarePath && softwareHost != nil + if keepAudioSwitchItem || holdsSoftwarePicture { + if keepAudioSwitchItem { nativeHost?.pause() } + let heldGeneration = loadGeneration + await holdPictureAcrossItemSwap() + // A stop() or load() that landed while the frame was read owns the engine now. + guard loadGeneration == heldGeneration, !Task.isCancelled else { + releaseHeldPicture(reason: "rebuild superseded") + return nil + } + } stopInternal(resetDisplayCriteria: false, keepNativeHost: !targetSoftwarePath && !mediaServicesWereReset, keepCustomReader: true, keepCurrentItem: keepAudioSwitchItem) @@ -2391,13 +2474,14 @@ extension AetherEngine { // Preserve the caller's probe budget (#68) across the reopen so an audio/title switch doesn't re-incur the full find_stream_info cost the caller paid to avoid. let reloadProfile = DemuxerOpenProfile.playback.withProbeBudget( probesize: loadedOptions.probesize, maxAnalyzeDuration: loadedOptions.maxAnalyzeDuration) + .withSourceOpenPolicy(loadedOptions.sourceOpenPolicy) var customPreopened: Demuxer? = nil if isCustomSource, let reader = customReader { let hint = customFormatHint do { let isLiveReload = loadedOptions.isLive let discCacheKey = url.absoluteString - customPreopened = try await Task.detached(priority: .userInitiated) { + customPreopened = try await BlockingWork.detached(priority: .userInitiated) { let d = Demuxer() // isLive preserved: a live custom source must not trigger SEEK_END on reopen. // selectTitleID rebuilds the disc concat stream for the chosen title (#67). @@ -2420,7 +2504,7 @@ extension AetherEngine { if loadGeneration != gen { customPreopened?.markClosed() if let d = customPreopened { - Task.detached { d.close() } + BlockingWork.detached { d.close() } } EngineLog.emit("[AetherEngine] reload superseded after reader reopen; unwinding", category: .engine) return nil @@ -2431,7 +2515,7 @@ extension AetherEngine { // survives the reload (#67). Non-disc URL sources keep customPreopened nil and reopen by URL. let headers = loadedOptions.httpHeaders do { - customPreopened = try await Task.detached(priority: .userInitiated) { + customPreopened = try await BlockingWork.detached(priority: .userInitiated) { let d = Demuxer() try d.open(url: url, extraHeaders: headers, profile: reloadProfile, selectTitleID: titleToReopen) return d @@ -2450,7 +2534,7 @@ extension AetherEngine { if loadGeneration != gen { customPreopened?.markClosed() if let d = customPreopened { - Task.detached { d.close() } + BlockingWork.detached { d.close() } } EngineLog.emit("[AetherEngine] reload superseded after disc URL reopen; unwinding", category: .engine) return nil @@ -2621,6 +2705,7 @@ extension AetherEngine { return nil } catch { guard loadGeneration == gen, !Task.isCancelled else { return nil } + releaseHeldPicture(reason: "rebuild failed") EngineLog.emit( "[AetherEngine] selectAudioTrack reload failed: \(error), playback stopped", category: .engine diff --git a/Sources/AetherEngine/AetherEngine+Probe.swift b/Sources/AetherEngine/AetherEngine+Probe.swift index 49d4c9aec..ecadadc6f 100644 --- a/Sources/AetherEngine/AetherEngine+Probe.swift +++ b/Sources/AetherEngine/AetherEngine+Probe.swift @@ -635,21 +635,75 @@ extension AetherEngine { nonisolated static func selectAudioIndex( tracks: [TrackInfo], override: Int32?, - preferredLanguages: [String] + preferredLanguages: [String], + prefersObjectAudio: Bool = false, + defaultIndex: Int32 = -1 ) -> Int32? { // Explicit host override wins, but only when it names a real audio track (else fall through). if let override, tracks.contains(where: { $0.id == Int(override) }) { return override } + // #731: with object rendering on, TrueHD Atmos and DTS:X keep their heights, which no other + // track of the same language does better, so they win ties within a language. Never across one. + let atmosRank: ((Int) -> Int)? = prefersObjectAudio + ? { isRenderableObjectAudio(tracks[$0]) ? 0 : 1 } + : nil // Each preference is scanned across all tracks in order, so an earlier preference on a later // track still beats a later preference on an earlier track. Within one preference the most // specific tag wins, so an "en-GB" preference takes en-GB over eng over en-US (#590). - guard let index = bestLanguageMatchIndex( + if let index = bestLanguageMatchIndex( languages: tracks.map(\.language), preferredLanguages: preferredLanguages, - kind: .audio - ) else { return nil } - return Int32(tracks[index].id) + kind: .audio, + secondaryRank: atmosRank + ) { + return Int32(tracks[index].id) + } + // No language preference decided it: the session would take its default track, so a TrueHD + // Atmos or DTS:X track in that track's language replaces it. + // Same dub only: a script or region both tags state and disagree on (es-ES against es-419) is + // another dub, not another format of this one. + guard prefersObjectAudio, + let fallback = tracks.first(where: { $0.id == Int(defaultIndex) }), + !isRenderableObjectAudio(fallback), + let language = fallback.language + else { return nil } + let candidates = tracks.compactMap { track -> (track: TrackInfo, rank: Int)? in + guard isRenderableObjectAudio(track), + let rank = languageMatchRank(track.language, language, kind: .audio), + rank / 3 < 2, rank % 3 < 2 else { return nil } + return (track, rank) + } + guard let atmos = candidates.min(by: { $0.rank < $1.rank })?.track else { return nil } + return Int32(atmos.id) + } + + /// TrueHD that FFmpeg marked Atmos while probing (mlpdec sets the profile from the major sync), and + /// not a commentary. `TrackInfo.isAtmos` stays the E-AC-3 JOC answer it is documented as. + nonisolated static func isRenderableTrueHDAtmos(_ track: TrackInfo) -> Bool { + track.codec.lowercased() == "truehd" && !track.isCommentary && !track.isExternal + && track.profile == trueHDAtmosProfileName + } + + nonisolated private static let trueHDAtmosProfileName = + VideoStreamFormat.profileName(codecID: AV_CODEC_ID_TRUEHD, profile: AV_PROFILE_TRUEHD_ATMOS) + + /// DTS that FFmpeg labelled DTS:X while probing, and not a commentary. FFmpeg names only two of + /// DTS:X's markers, so a DTS-HD MA track it labels plain can be DTS:X as well; that one is still + /// rendered when it is the track that plays, but only the label can be ranked before playback. + /// `TrackInfo.codec` is the decoder's name, `dca` for libavcodec's DTS decoder; `dts` is the + /// codec's own name, which a build without the decoder would report. + nonisolated static func isRenderableDTSX(_ track: TrackInfo) -> Bool { + ["dca", "dts"].contains(track.codec.lowercased()) && !track.isCommentary && !track.isExternal + && dtsxProfileNames.contains(track.profile ?? "") + } + + nonisolated private static let dtsxProfileNames = Set([AV_PROFILE_DTS_HD_MA_X, AV_PROFILE_DTS_HD_MA_X_IMAX] + .compactMap { VideoStreamFormat.profileName(codecID: AV_CODEC_ID_DTS, profile: $0) }) + + /// The tracks object rendering keeps the heights of. + nonisolated static func isRenderableObjectAudio(_ track: TrackInfo) -> Bool { + isRenderableTrueHDAtmos(track) || isRenderableDTSX(track) } /// Resolve the subtitle track to auto-activate from `LoadOptions.preferredSubtitleLanguages`: within the diff --git a/Sources/AetherEngine/AetherEngine+Recording.swift b/Sources/AetherEngine/AetherEngine+Recording.swift index 1becc3c68..65e67a971 100644 --- a/Sources/AetherEngine/AetherEngine+Recording.swift +++ b/Sources/AetherEngine/AetherEngine+Recording.swift @@ -126,7 +126,7 @@ extension AetherEngine { let previous = recordingFinish recordingFinish = Task { [weak self] in await previous?.value - let failure = await Task.detached(priority: .utility) { writer.finish(reason: reason) }.value + let failure = await BlockingWork.detached(priority: .utility) { writer.finish(reason: reason) }.value guard let self, self.recordingGeneration == generation else { return } if let failure { self.recordingState = .failed(failure) diff --git a/Sources/AetherEngine/AetherEngine+ReloadWithOptions.swift b/Sources/AetherEngine/AetherEngine+ReloadWithOptions.swift index 9b8e1958e..930d55c9e 100644 --- a/Sources/AetherEngine/AetherEngine+ReloadWithOptions.swift +++ b/Sources/AetherEngine/AetherEngine+ReloadWithOptions.swift @@ -403,16 +403,18 @@ enum SessionOptionCorrection { /// deliberately. Update this list and, if the field names the session, `loadIdentityFields`. static let knownFields: [String] = [ "omitCriteriaColorExtensions", "suppressDisplayCriteria", "httpHeaders", "httpRequestAuthorization", + "nativeVideoFrameDiagnostics", "nativeVideoFrameRecovery", "hostRetriesExhaustedLiveReplay", "keepDvh1TagWithoutDV", "forceDolbyVisionOnNonDVDisplay", "dolbyVisionHandling", "matchContentEnabled", "panelIsInHDRMode", "attemptsHDRMasterOnUnprovenPanel", "panelPresentsDolbyVision", "audioBridgeMode", "objectAudioRendering", "isLive", "audioOnly", "dvrWindowSeconds", - "liveBlockingReload", "liveJoinProfile", "liveJoinStartsImmediately", + "softwareDVRRetention", + "liveBlockingReload", "liveJoinProfile", "sourceOpenPolicy", "liveStartupGraceSeconds", "liveStartupSingleSegmentMinimumSeconds", "liveJoinStartsImmediately", "clampsLiveResumeToWindow", "nativeRemoteHLS", "nativeRemoteHLSIngestFallback", "preserveASSMarkup", "prepareNativeSubtitles", "eagerNativeSubtitleReaders", "serveIFramePlaylist", "confirmAtmos", "nativeSubtitlePreferredLanguages", "sequentialOrigin", "maxConcurrentSourceRequests", "heldSourceConnection", "declaredDurationSeconds", "probesize", "maxAnalyzeDuration", "preferredAudioLanguages", - "preferredSubtitleLanguages", "externalSubtitles", "forwardBufferSegments", "autoplay", + "preferredSubtitleLanguages", "externalSubtitles", "forwardBufferSegments", "progressiveSegmentDelivery", "autoplay", "audioDelaySeconds", "teletextPage", "deinterlaceMode", "deinterlaceFieldRate", "preferredDecodePath", "escalatesToSoftwarePath", "sharedOutputRole", "isLiveRejoin", "subtitleSessionCarryover", ] diff --git a/Sources/AetherEngine/AetherEngine+ScrubThumbnail.swift b/Sources/AetherEngine/AetherEngine+ScrubThumbnail.swift index ebff1fc35..b135e7620 100644 --- a/Sources/AetherEngine/AetherEngine+ScrubThumbnail.swift +++ b/Sources/AetherEngine/AetherEngine+ScrubThumbnail.swift @@ -8,6 +8,72 @@ extension AetherEngine { /// warm; each extractor maps its segment file (audit SEG-2), so the entries hold clean /// file-backed pages rather than heap copies, and the bound remains fixed. nonisolated static let scrubThumbnailExtractorLimit = 6 + public func clearResidentPreviewFrames() { + for entry in scrubThumbnailExtractors { + Task { await entry.extractor.clearResidentPreviewCache() } + } + } + + /// Timestamped production preview. All reads come from existing resident + /// bytes; a missing target never opens a second connection or seeks playback. + public func scrubPreviewFrame(atSeconds seconds: Double, refined: Bool, maxWidth: Int = 320, + isCancelled: @escaping @Sendable () -> Bool) async -> ScrubFrame? { + guard seconds.isFinite, !Task.isCancelled, !isCancelled() else { return nil } + let gen = loadGeneration + guard let session = nativeVideoSession else { + guard let host = softwareHost else { return nil } + let result = await host.scrubPreviewFrame(atSessionSeconds: seconds, refined: refined, + maxWidth: maxWidth, isCancelled: isCancelled) + return gen == loadGeneration && !Task.isCancelled && !isCancelled() ? result : nil + } + // Freeze both axes. VOD segment indices use the plan's keyframe origin; + // the segment's bytes retain their own epoch normalization after restart. + let origin = sourcePresentationOrigin + let live = isLive + // Live: the same stable session-to-output shift `liveScrubThumbnail` uses (#712), frozen + // here so the request and its result convert on one axis even if the shift moves meanwhile. + let liveShift = liveSessionShiftSeconds + let sourceTarget = PresentationAxis.source(displayTime: seconds, origin: origin) + let output = live ? seconds - liveShift + : sourceTarget - session.firstKeyframeSeconds + let planOrigin = session.firstKeyframeSeconds - origin + let source = await BlockingWork.detached(priority: .utility) { [session] in + session.scrubThumbnailSource(atSeconds: output) + }.value + guard let source, let carried = source.carriedOffset, + gen == loadGeneration, !Task.isCancelled, !isCancelled() else { return nil } + let extractor: FrameExtractor + if let index = scrubThumbnailExtractors.firstIndex(where: { $0.segmentIndex == source.segmentIndex }) { + let hit = scrubThumbnailExtractors.remove(at: index) + if hit.extractor.residentIdentity == source.identity { + scrubThumbnailExtractors.append(hit); extractor = hit.extractor + } else { + Task { await hit.extractor.shutdown() } + guard let reader = source.makeReader() else { return nil } + extractor = FrameExtractor(residentReader: reader, formatHint: "mp4", identity: source.identity) + scrubThumbnailExtractors.append((source.segmentIndex, extractor)) + } + } else { + guard let reader = source.makeReader() else { return nil } + extractor = FrameExtractor(residentReader: reader, formatHint: "mp4", identity: source.identity) + scrubThumbnailExtractors.append((source.segmentIndex, extractor)) + trimScrubThumbnailExtractors() + } + guard let frame = await extractor.residentPreview(rawTarget: live ? output : sourceTarget - carried, + refined: refined, maxWidth: maxWidth, isCancelled: isCancelled), + gen == loadGeneration, !Task.isCancelled, !isCancelled() else { return nil } + let stillOwned = await BlockingWork.detached(priority: .utility) { [session] in + guard let current = session.scrubThumbnailSource(atSeconds: output) else { return false } + return current.identity == source.identity && current.carriedOffset == source.carriedOffset + }.value + guard stillOwned, gen == loadGeneration, !Task.isCancelled, !isCancelled() else { return nil } + guard let actual = live ? Optional(frame.actualSeconds + liveShift) + : ScrubSegmentTime.displayTime(rawPTS: frame.actualSeconds, carriedOffset: carried, displayOrigin: origin) + else { return nil } + let rangeStart = live ? source.startSeconds + liveShift : source.startSeconds + planOrigin + return ScrubFrame(image: frame.image, actualSeconds: actual, refined: frame.refined, + validRange: rangeStart..<(rangeStart + source.durationSeconds)) + } /// Cache-backed scrub still for the active native session (live or VOD). Decodes from /// already-produced SegmentCache bytes, so it never opens a second connection and works @@ -43,7 +109,7 @@ extension AetherEngine { return loadGeneration == gen ? image : nil } let gen = loadGeneration - let source = await Task.detached(priority: .userInitiated) { [session] in + let source = await BlockingWork.detached(priority: .userInitiated) { [session] in session.scrubThumbnailSource(atSeconds: seconds) }.value // Guard against zap/stop clearing the LRU: a stale extractor's segment indices diff --git a/Sources/AetherEngine/AetherEngine+SubtitleOCR.swift b/Sources/AetherEngine/AetherEngine+SubtitleOCR.swift index 0f64bbcaa..7240ebf0c 100644 --- a/Sources/AetherEngine/AetherEngine+SubtitleOCR.swift +++ b/Sources/AetherEngine/AetherEngine+SubtitleOCR.swift @@ -14,7 +14,7 @@ extension AetherEngine { let language = ordinal < nativeSubtitleTrackTable.count ? nativeSubtitleTrackTable[ordinal].language : nil EngineLog.emit("[SubtitleOCR] worker armed: ordinal=\(ordinal) stream=\(streamIndex)", category: .engine) - subtitleOCRWorkerTask = Task.detached(priority: .utility) { [weak self] in + subtitleOCRWorkerTask = BlockingWork.detached(priority: .utility) { [weak self] in while !Task.isCancelled { guard let self else { return } // AE#628: plan on the MainActor, decode here, off it, then resolve ends back on it. @@ -156,7 +156,7 @@ extension AetherEngine { let language = nativeSubtitleTrackTable[ordinal].language subtitleOCRSidecarFillTask?.cancel() EngineLog.emit("[SubtitleOCR] sidecar fill starting: track=\(id) cues=\(cues.count)", category: .engine) - subtitleOCRSidecarFillTask = Task.detached(priority: .utility) { + subtitleOCRSidecarFillTask = BlockingWork.detached(priority: .utility) { await SubtitleImageOCR.appendRecognized(cues: cues, language: language, to: store) if !Task.isCancelled { store.markFinished() } } diff --git a/Sources/AetherEngine/AetherEngine+Subtitles.swift b/Sources/AetherEngine/AetherEngine+Subtitles.swift index 24705bf25..a9bb72573 100644 --- a/Sources/AetherEngine/AetherEngine+Subtitles.swift +++ b/Sources/AetherEngine/AetherEngine+Subtitles.swift @@ -287,7 +287,7 @@ extension AetherEngine { subtitleDrainTickSerial &+= 1 let serial = subtitleDrainTickSerial subtitleDrainTickInFlight = Task { [weak self] in - let events = await Task.detached(priority: .userInitiated) { handoff.decode() }.value + let events = await BlockingWork.detached(priority: .userInitiated) { handoff.decode() }.value guard let self, self.subtitleDrainTickSerial == serial else { return } self.subtitleDrainTickInFlight = nil self.finishSubtitleDrainTick(work, events: events) @@ -762,7 +762,7 @@ extension AetherEngine { let titleID = activeDiscTitleID subtitleForwardPrefetchActiveLead = lead let link = SideReaderLinkArbiter(gate: sideReaderLinkGate) - subtitleForwardPrefetchTask = Task.detached(priority: .utility) { [weak self] in + subtitleForwardPrefetchTask = BlockingWork.detached(priority: .utility) { [weak self] in // #231: the loop used to end on the first failed read and only a seek or producer // re-anchor could bring it back, so a viewer who does not seek lost every cue beyond // the pump's own park for the rest of the session, silently. Restart on a read error, @@ -1498,7 +1498,7 @@ extension AetherEngine { stores: session.nativeSubtitleCueStoresForSession, defaultHeaders: loadedOptions.httpHeaders) guard !jobs.isEmpty else { return } - externalNativeStoreFillTask = Task.detached(priority: .utility) { [jobs] in + externalNativeStoreFillTask = BlockingWork.detached(priority: .utility) { [jobs] in for job in jobs { if Task.isCancelled { return } await AetherEngine.runExternalSubtitleFill(job: job) @@ -1817,7 +1817,7 @@ extension AetherEngine { let maxAnalyzeDuration = loadedOptions.maxAnalyzeDuration let titleID = activeDiscTitleID let link = SideReaderLinkArbiter(gate: sideReaderLinkGate) - nativeSubtitleReadersTask = Task.detached(priority: .utility) { [weak self] in + nativeSubtitleReadersTask = BlockingWork.detached(priority: .utility) { [weak self] in await self?.runNativeSubtitleReaders( url: url, reader: reader, formatHint: formatHint, headers: headers, pairs: pairs, startAt: startAt, videoWidth: w, videoHeight: h, diff --git a/Sources/AetherEngine/AetherEngine+Version.swift b/Sources/AetherEngine/AetherEngine+Version.swift index fdf3e4f9f..f2a58fea3 100644 --- a/Sources/AetherEngine/AetherEngine+Version.swift +++ b/Sources/AetherEngine/AetherEngine+Version.swift @@ -11,5 +11,5 @@ extension AetherEngine { /// /// Between releases, and in a consumer that pins an unreleased commit for a device test, this /// names the last PUBLISHED version the checkout descends from, not every patch in it. - public nonisolated static let version = "7.28.3" + public nonisolated static let version = "7.36.0" } diff --git a/Sources/AetherEngine/AetherEngine.swift b/Sources/AetherEngine/AetherEngine.swift index 354d61370..07fb58ef4 100644 --- a/Sources/AetherEngine/AetherEngine.swift +++ b/Sources/AetherEngine/AetherEngine.swift @@ -90,6 +90,34 @@ public final class AetherEngine: ObservableObject { /// still need to re-anchor and decode at the target. @Published public internal(set) var residentRanges: [ClosedRange] = [] + /// Byte-source seekability learned during this load. Nil means the source has not been + /// probed, or AVFoundation owns it directly. A duration alone never establishes seekability. + @Published public internal(set) var isSourceSeekable: Bool? = nil { + didSet { + guard oldValue != isSourceSeekable, let isSourceSeekable else { return } + EngineLog.emit("[SourceOpen] phase=capability seekability=\(isSourceSeekable ? "seekable" : "forward-only")", category: .demux) + } + } + + /// Whether the active session accepts a seek. Live playback requires a DVR window; + /// forward-only VOD never advertises arbitrary seeking even when its duration is known. + /// Remote HLS uses the native item's measured range instead of container metadata. + public var canSeek: Bool { + guard isSessionReady else { return false } + switch state { + case .idle, .loading, .ended, .error: return false + default: break + } + if isLive { return seekableLiveRange != nil } + guard !loadedOptions.sequentialOrigin, isSourceSeekable != false, + duration.isFinite, duration > 0 else { return false } + if videoRoute == .remoteBypass { + guard let nativeHost else { return false } + return nativeHost.seekableEnd > nativeHost.seekableStart + } + return isSourceSeekable == true + } + /// The same spans as `residentRanges`, unfolded, on the producer's playlist axis. Held because the /// fold onto the display axis moves when the producer publishes a new shift, and a shift change is /// not a cache change: without the raw spans the band would keep the retired epoch's offset until @@ -194,10 +222,15 @@ public final class AetherEngine: ObservableObject { /// preventing a superseded seek from clobbering a newer one. private var seekGeneration: UInt64 = 0 - /// #250: read-only view of the seek fence for the subtitle-resolution statement. Read-only on - /// purpose: only `seek(to:)` may move the counter, and a diagnostic must not be able to. + /// Read-only seek fence for diagnostics and queued resume work. var currentSeekGeneration: UInt64 { seekGeneration } + /// Every actual reposition, including a live-only edge seek, invalidates prior work. + func advanceSeekGeneration() -> UInt64 { + seekGeneration &+= 1 + return seekGeneration + } + /// Three independent seek-in-flight flags that isSeeking OR-s over. Programmatic and native scrub /// seeks are NOT mutually exclusive: a far programmatic seek triggers the same producer-restart as a /// scrub. `deferred` is a seek stashed before the session could take it (#127/#178). Tracked @@ -322,7 +355,7 @@ public final class AetherEngine: ObservableObject { session: HLSVideoEngine?, itemSeconds: Double ) async -> Double { guard let session else { return itemSeconds } - return await Task.detached(priority: .userInitiated) { + return await BlockingWork.detached(priority: .userInitiated) { session.preparedSeekLanding(itemSeconds: itemSeconds) }.value } @@ -403,14 +436,20 @@ public final class AetherEngine: ObservableObject { let watchTarget = nativeScrubSeekTarget, let host = nativeHost else { // AE#270: the event's `target` is on the display axis, so its landing has to be too. - finishNativeScrubSeek(.landed(renderedTime: PresentationAxis.display( - sourcePTS: clock.sourceTime, origin: sourcePresentationOrigin))) + let renderedTime = isLive && videoRoute == .loopback + ? (nativeHost?.renderedTime ?? nativeClockSeconds) + liveSessionShiftSeconds + + liveItemAxisOffsetSeconds + : PresentationAxis.display(sourcePTS: clock.sourceTime, + origin: sourcePresentationOrigin) + finishNativeScrubSeek(.landed(renderedTime: renderedTime)) return } pendingScrubLanding = PendingScrubLanding( displayTarget: watchTarget, - playlistTarget: PresentationAxis.source(displayTime: watchTarget, - origin: sourcePresentationOrigin) - playlistShiftSeconds, + playlistTarget: isLive && videoRoute == .loopback + ? watchTarget - liveSessionShiftSeconds - liveItemAxisOffsetSeconds + : PresentationAxis.source(displayTime: watchTarget, + origin: sourcePresentationOrigin) - playlistShiftSeconds, frozenRendered: host.renderedTime ) // The watch runs on `$renderedTime`, which goes silent while AVPlayer waits to play, so the @@ -447,10 +486,11 @@ public final class AetherEngine: ObservableObject { guard Self.nativeScrubLanded(rendered: rendered, target: watch.playlistTarget, frozen: watch.frozenRendered) else { return } - finishNativeScrubSeek( - .landed(renderedTime: PresentationAxis.display(sourcePTS: rendered + playlistShiftSeconds, - origin: sourcePresentationOrigin)) - ) + let renderedTime = isLive && videoRoute == .loopback + ? rendered + liveSessionShiftSeconds + liveItemAxisOffsetSeconds + : PresentationAxis.display(sourcePTS: rendered + playlistShiftSeconds, + origin: sourcePresentationOrigin) + finishNativeScrubSeek(.landed(renderedTime: renderedTime)) } /// Armed when a coalesced scrub restart drains; retired when the picture reaches the target or the @@ -531,8 +571,8 @@ public final class AetherEngine: ObservableObject { @Published public internal(set) var sourceDVProfile: Int? = nil /// The Dolby Vision profile rewrite applied to the served stream, nil when the session serves the source's - /// own profile (or no Dolby Vision). `.profile7ToProfile81` on a Profile 7 source played on a display - /// presenting Dolby Vision, where `videoFormat` reads `.dolbyVision` and `sourceDVProfile` keeps 7. + /// own profile (or no Dolby Vision). `.profile7ToProfile81` on every Profile 7 source not served as its + /// base layer, whatever the display; `sourceDVProfile` keeps 7. @Published public internal(set) var dolbyVisionConversion: DolbyVisionConversion? = nil /// A HDR10+ (ST 2094-40) T.35 payload was seen in this session's video, whatever the source's format. @@ -759,6 +799,7 @@ public final class AetherEngine: ObservableObject { /// the keepalive policy + pause-safety read it. public var pictureInPictureActive = false { didSet { + nativeHost?.pictureInPictureActive = pictureInPictureActive // SW-PiP Phase C: flip the frame compositor with the PiP state so subtitles appear in the // window and never double-draw under the fullscreen host overlay. softwareHost?.updateSubtitleCompositor( @@ -1043,6 +1084,7 @@ public final class AetherEngine: ObservableObject { func noteMediaServicesReset(lost: Bool) { mediaServicesResetPending = true + dropAtmosOutputActivator() EngineLog.emit( "[AetherEngine] #597 media services were \(lost ? "lost" : "reset"): every audio and " + "video object this process holds is invalid, so the next load builds fresh native and " @@ -1109,17 +1151,26 @@ public final class AetherEngine: ObservableObject { /// - keepVideoAlive: result of shouldKeepVideoAlive / shouldKeepVideoAliveTV. /// - pipActive: a live PiP window renders the SW layer's frames, so the SW host must keep /// decoding video in background instead of dropping to audio-only (SW-PiP Phase A). + /// - softwareHostHasAudio: AE#739, the SW host renders audio of its own. Audio-only mode paces the + /// demux loop on the audio renderer alone, so without audio nothing paces it: the loop dropped + /// the rest of the file within moments and parked the clock at end of media in the background. + /// Such a session has nothing to keep playing and is released like a paused one. nonisolated static func backgroundAction( isAudioBackend: Bool, hasSoftwareHost: Bool, + softwareHostHasAudio: Bool, keepVideoAlive: Bool, pipActive: Bool, state: PlaybackState ) -> BackgroundAction { if isAudioBackend { return .doNothing } if keepVideoAlive { - if hasSoftwareHost { return pipActive ? .doNothing : .enterSoftwareAudioOnly } - return .doNothing + if hasSoftwareHost { + if pipActive { return .doNothing } + if softwareHostHasAudio { return .enterSoftwareAudioOnly } + } else { + return .doNothing + } } guard state == .playing || state == .paused else { return .doNothing } return .teardownVideo @@ -1446,10 +1497,34 @@ public final class AetherEngine: ObservableObject { /// Forwarder; see `clock.behindLiveSeconds`. public var behindLiveSeconds: Double { clock.behindLiveSeconds } - /// Fires when the live source restarted from byte 0 (e.g. a Jellyfin transcode respawn). The engine has - /// parked the session; the host must negotiate a fresh transcode URL and call `load`. No replay; subscribe per session. + /// Fires when a live session cannot continue through its bounded in-engine source reopen. + /// A verified replay first reopens a supported source while retaining its cache and packet + /// history. When fresh negotiation is needed, production is parked and the host must call + /// `load` with a fresh source under its bounded retune policy. Subscribe per session. public let liveSourceReset = PassthroughSubject() + /// Bounded recovery could not find new media after a verified replay. Cached DVR media + /// remains readable, but automatic `load` would discard its history and permit the same + /// broadcast to play again. The host can retry with `retryLiveSourceRecovery()` after + /// its own backoff; this is not a codec failure. Fires only under + /// `LoadOptions.hostRetriesExhaustedLiveReplay`; otherwise the exhaustion is a `liveSourceReset`. + /// Subscribe per session. + public let liveSourceReplayExhausted = PassthroughSubject() + + /// Resume a parked live source without replacing the consumer item, DVR cache or replay + /// evidence. Returns true when the retained session accepted the retry or has a retry in flight; + /// false when this route cannot continue it. Calls coalesce; the host owns retry timing. + @discardableResult + public func retryLiveSourceRecovery() -> Bool { + guard isLive, nativeVideoSession?.retryLiveSourceRecovery() == true else { return false } + liveOutageSourceGivenUp = false + // A timeshifted viewer can still be consuming cached runway. Restart the outage + // watcher only if that item actually ended, never replace it merely because the + // source connection is being renewed behind it. + if nativeHost?.didReachEnd == true { handleLiveOutageWindowExhausted() } + return true + } + /// AE#444 follow-up (Sodalite#104): fires when a resume found the playhead outside the DVR window /// and moved it forward. /// @@ -1695,7 +1770,7 @@ public final class AetherEngine: ObservableObject { } /// The surface the layer is presented on: the most recently bound one that is still alive. - private var boundView: AetherPlayerView? { + var boundView: AetherPlayerView? { boundSurfaces.last { $0.view != nil }?.view } @@ -1715,6 +1790,23 @@ public final class AetherEngine: ObservableObject { presentCurrentLayer() } + /// Bind the surface the engine holds the picture on across the item swap of an audio-track switch, + /// for a host that renders the native path through AVKit instead of `AetherPlayerView`. Without + /// one the engine holds it on the bound `AetherPlayerView`, and with neither nothing is held. + public func bindStillView(_ view: AetherStillView) { + if let previous = boundStillView, previous !== view, heldPictureView === previous { + releaseHeldPicture(reason: "still view replaced") + } + boundStillView = view + } + + /// Unbind a still view. Idempotent; takes down a picture held on it. + public func unbindStillView(_ view: AetherStillView) { + guard boundStillView === view else { return } + if heldPictureView === view { releaseHeldPicture(reason: "still view unbound") } + boundStillView = nil + } + /// Unbind a view. Idempotent. Unbinding the surface the layer is on detaches it and presents the /// layer on the most recently bound surface that is still alive, if any. public func unbind(view: AetherPlayerView) { @@ -1796,9 +1888,12 @@ public final class AetherEngine: ObservableObject { } } - /// A playlist-axis second on the published display axis. Seam-aware like the clock fold: bytes - /// below a seam were muxed by the previous producer and keep folding with its shift. + /// A playlist-axis second on the published display axis. Live loopback uses the shift latched + /// at join; VOD follows its producer seams. func displaySeconds(forPlaylistSeconds seconds: Double) -> Double { + if isLive && videoRoute == .loopback { + return seconds + liveSessionShiftSeconds + } let shift = presentationAxis.shiftSeconds(atItemSeconds: seconds) ?? playlistShiftSeconds return PresentationAxis.display(sourcePTS: seconds + shift, origin: displayOrigin(forShift: shift)) @@ -1867,6 +1962,11 @@ public final class AetherEngine: ObservableObject { /// Native AVPlayer + AVPlayerLayer host. Non-nil between load and stop. var nativeHost: NativeAVPlayerHost? + /// Controlled host I/O boundary for integration witnesses. Production reads only the + /// existing KVO mirror, never AVPlayerItem's synchronous seekableTimeRanges getter. + var nativeSeekableEndReading: (() -> Double)? + var nativeItemSeekableEnd: Double { nativeSeekableEndReading?() ?? nativeHost?.seekableEnd ?? 0 } + /// Combine subscriptions mirroring nativeHost's @Published into the engine. Cancelled in stopInternal. var nativeCancellables: Set = [] @@ -1950,12 +2050,28 @@ public final class AetherEngine: ObservableObject { private(set) var customSourceIsSeekable = false /// Seconds the producer subtracted from source PTS so AVPlayer's raw clock sits at - /// `source_pts - playlistShiftSeconds`. The engine folds this back before publishing, so - /// currentTime/sourceTime always carry source PTS. Updated by HLSVideoEngine.onPlaylistShiftChanged + /// `source_pts - playlistShiftSeconds`. Source time folds this back for cue alignment; live + /// loopback currentTime uses `liveDisplayShiftSeconds` so PTS rollbacks cannot move its DVR axis. + /// Updated by HLSVideoEngine.onPlaylistShiftChanged /// on every producer init/restart (Matroska seek imprecision means the shift can differ per restart). /// 0 on SW/audio paths (no shift). See `nativeClockSeconds` for the pre-fold raw value. @Published public internal(set) var playlistShiftSeconds: Double = 0 + /// Live loopback segments keep increasing their item timestamps across a source PTS rollback. + /// Keep the first shift as the session's display axis; later shifts still describe the source + /// PTS of rendered frames, but must never move the DVR rail or its seek targets. + var liveDisplayShiftSeconds: Double? + + var liveSessionShiftSeconds: Double { + isLive && videoRoute == .loopback ? (liveDisplayShiftSeconds ?? playlistShiftSeconds) + : playlistShiftSeconds + } + + var liveSessionSeekAxis: PresentationAxisMap { + isLive && videoRoute == .loopback + ? .anchored(shiftSeconds: liveSessionShiftSeconds) : presentationAxis + } + /// Raw AVPlayer clock (source_pts - playlistShiftSeconds) before shift fold. Held so /// onPlaylistShiftChanged can re-derive currentTime immediately on shift change. Unused on SW/audio (shift 0). var nativeClockSeconds: Double = 0 @@ -2006,11 +2122,14 @@ public final class AetherEngine: ObservableObject { activeProducerShiftSeconds - playlistShiftSeconds } - /// `currentTime - sourceTime`. Positive while a native seek is in flight: currentTime holds the seek target - /// while sourceTime tracks AVPlayer's rendered position. This is the AetherEngine#49 divergence measured - /// by rrgomes on-device. Distinct from `frameAhead` (producer-shift fold). Diagnostics only. + /// Seek target ahead of the rendered position, on the same display axis. Source PTS can roll + /// backward on live loopback while the item axis continues, so compare item time on that route. public var clockLeadSeconds: Double { - clock.currentTime - clock.sourceTime + if isLive && videoRoute == .loopback { + return clock.currentTime - (renderedPositionMirror.get() + liveSessionShiftSeconds + + liveItemAxisOffsetSeconds) + } + return clock.currentTime - clock.sourceTime } /// Monotonic load/stop generation. Bumped by every stopInternal; captured after teardown; re-checked at @@ -2019,6 +2138,9 @@ public final class AetherEngine: ObservableObject { /// dismissal. A superseded load throws CancellationError at the first checkpoint. var loadGeneration: UInt64 = 0 + /// Distinct across engine instances and refreshed whenever teardown invalidates preview work. + public private(set) var scrubPreviewSourceGeneration = UUID() + /// #361: generation of the startup the user is currently waiting through. Deliberately NOT /// `loadGeneration`, which counts teardowns: an engine-initiated reroute (an HLS playlist found /// on the loopback path, a carriage case rerouted onto ingest) tears down and calls `load()` @@ -2671,12 +2793,17 @@ public final class AetherEngine: ObservableObject { } masterFallbackUsed = true // AE#459: the display answered. Display-rejection codes only, never the -1002 parse failure. - // AE#535: and only while the display is eligible for HDR, or the answer is about the window. + // AE#535: and only for an HDR master on an HDR-eligible display, or the answer is about the window. if MasterFallbackDecision.isDisplayRejectionCode(rejection.code), !Self.panelRefusedHDRMaster { let eligibleNow = AVPlayer.eligibleForHDRPlayback let switching = displayCriteria.displayModeSwitchInProgress - if MasterFallbackDecision.shouldLatchPanelRefusal( - code: rejection.code, displayEligibleForHDRNow: eligibleNow, + if !session.servedSourceIsHDR { + EngineLog.emit( + "[DisplayCriteria] SDR master refused (code=\(rejection.code)); this item falls back, " + + "an SDR refusal does not latch the HDR route (#535)", + category: .engine) + } else if MasterFallbackDecision.shouldLatchPanelRefusal( + code: rejection.code, servedMasterIsHDR: true, displayEligibleForHDRNow: eligibleNow, displaySwitchInProgress: switching) { Self.panelRefusedHDRMaster = true EngineLog.emit( @@ -3065,9 +3192,10 @@ public final class AetherEngine: ObservableObject { /// whose seekable end IS the playhead, so the distance-behind-live that policy reads is zero and it /// would aim at the edge, discarding the rewind the viewer kept through the whole outage. func reloadStalledConsumerItem(position: Double, allowPausedConsumer: Bool = false, - liveRejoinOverride: Double? = nil) { + liveRejoinOverride: Double? = nil, + preserveLivePosition: Double? = nil, replacementURL: URL? = nil) { guard let host = nativeHost, let player = currentAVPlayer, - let url = (player.currentItem?.asset as? AVURLAsset)?.url else { return } + let url = replacementURL ?? (player.currentItem?.asset as? AVURLAsset)?.url else { return } // Item death parks tcs at .paused; only that trigger may bypass the user-pause guard. guard Self.stalledConsumerRecoveryAllowed( consumerIsPaused: player.timeControlStatus == .paused, @@ -3087,14 +3215,19 @@ public final class AetherEngine: ObservableObject { behindWhenLastAdvancing: liveBehindWhenLastAdvancing, residentRange: liveWindow?.seekableRange, targetDurationSeconds: liveTargetDurationSeconds) - let rejoinPosition = policyRejoin ?? liveRejoinOverride + let rejoinPosition = preserveLivePosition + ?? (replacementURL == nil ? (policyRejoin ?? liveRejoinOverride) : liveRejoinOverride) // AE#446 round 3: name which of the two decided, because they mean different things and the // difference is exactly what a reader of this line is trying to establish. The policy reads // how far behind live the item was; a window closed with ENDLIST is a finite asset whose // seekable end IS the playhead, so that distance reads zero there and printing it next to a // carried position says nothing true about a timeshifted viewer. let liveTarget: String = rejoinPosition.map { position in - let provenance = policyRejoin != nil + let provenance = preserveLivePosition != nil + ? "(video presentation repair at the current playhead)" + : replacementURL != nil + ? "(preserving the current position across playlist renewal)" + : policyRejoin != nil ? "(\(String(format: "%.1f", liveBehindWhenLastAdvancing))s behind live when the " + "picture last moved, still resident)" : "(carried across the swap: the window it played out under was closed, so its own " @@ -3102,12 +3235,14 @@ public final class AetherEngine: ObservableObject { return "\(String(format: "%.2f", position))s, the place it held \(provenance)" } ?? "the live edge (rejoin)" EngineLog.emit( - "[AetherEngine] #65 nudge did not revive the consumer; reloading item at " + (replacementURL == nil + ? "[AetherEngine] #65 nudge did not revive the consumer; reloading item at " + : "[AetherEngine] live playlist timing changed; replacing item at ") + (isLive ? liveTarget : "\(String(format: "%.2f", anchor))s") + Self.recoveryAnchorLogSuffix( anchor: anchor, position: position, pendingSeekTarget: pendingRecoverySeekClockTarget) - + " (same URL, same host)", + + (replacementURL == nil ? " (same URL, same host)" : " (new playlist URL, same source and cache)"), category: .engine ) // AE#454: the placement, expressed in the playlist the fresh item is about to load. A rejoin @@ -3120,8 +3255,8 @@ public final class AetherEngine: ObservableObject { // the tag, and it is the same seek it always was. var didArmPlacement = false if isLive, let rejoinPosition, let session = nativeVideoSession { - let outputSeconds = presentationAxis.itemSeconds(forSourceSeconds: rejoinPosition) - ?? (rejoinPosition - playlistShiftSeconds) + let outputSeconds = liveSessionSeekAxis.itemSeconds(forSourceSeconds: rejoinPosition) + ?? (rejoinPosition - liveSessionShiftSeconds) if let armed = session.armLiveRejoinStart(atOutputSeconds: outputSeconds) { didArmPlacement = true EngineLog.emit( @@ -3132,6 +3267,10 @@ public final class AetherEngine: ObservableObject { + "to be corrected off it", category: .engine) } else { + if preserveLivePosition != nil { + EngineLog.emit("[AetherEngine] video presentation repair deferred: current position is not resident; preserving playback", category: .engine) + return + } EngineLog.emit( "[AetherEngine] #454 the place it held is not in a segment the producer still " + "holds, so the fresh item joins as before and the stashed seek decides", @@ -3489,6 +3628,20 @@ public final class AetherEngine: ObservableObject { /// `sessionRebuildResumesPlaying`. See `rebuildResumesPlaying`. var transportIntentUnderReconstruction: Bool? private(set) var audioSelectionTask: Task? + /// AE#711 follow-up: the picture held over an in-place item swap. See `holdPictureAcrossItemSwap`. + var heldPictureRelease: AnyCancellable? + weak var heldPictureView: (any HeldStillSurface)? + weak var boundStillView: AetherStillView? + /// Why the last hold showed nothing, for the log and the tests that pin it. + var heldPictureLastSkip: String? + var heldPictureToken = 0 + var heldPictureShownAt: ContinuousClock.Instant? + /// What took the last held picture down, for the log line and the tests that pin it. + var heldPictureLastRelease: String? + /// A hold over a software rebuild waits for `loadSoftware` to install the host it comes down on. + var heldPictureAwaitsSoftwareHost = false + /// Which route the last held picture came from, for the log line and the tests that pin it. + var heldPictureLastRoute: String? /// A `selectAudioTrack` pick not yet started, and the one whose rebuild is running. A reload that /// lands meanwhile restores these before `activeAudioTrackIndex`, which the switch's own /// `stopInternal` has just cleared (see `liveSelection`). @@ -3695,7 +3848,7 @@ public final class AetherEngine: ObservableObject { // // Issue #114: the declaration runs off the main thread. See `audioSessionCategoryTask`. #if os(iOS) || os(tvOS) - audioSessionCategoryTask = Task.detached(priority: .userInitiated) { + audioSessionCategoryTask = BlockingWork.detached(priority: .userInitiated) { let session = AVAudioSession.sharedInstance() do { try session.setCategory(.playback, mode: .moviePlayback, policy: AetherEngine.audioSessionRouteSharingPolicy) @@ -3816,7 +3969,8 @@ public final class AetherEngine: ObservableObject { ) async throws -> HLSVODIngestReroute { guard let reader = try await HLSVODIngestReader.makeIfHEVCMPEGTS( playlistURL: playlistURL, - httpHeaders: options.httpHeaders + httpHeaders: options.httpHeaders, + persistentHTTP1: options.heldSourceConnection ) else { return .notTaken } try checkLoadCurrent(generation) EngineLog.emit( @@ -3965,6 +4119,7 @@ public final class AetherEngine: ObservableObject { attempt: LoadAttempt ) async throws -> SourceProbe? { var source = source + var startPosition = startPosition var options = options options = Self.applyingSharedOutputRole(options) SharedOutputCoordinator.shared.join(ObjectIdentifier(self), role: options.sharedOutputRole, tag: logTag, owner: self) @@ -4009,6 +4164,7 @@ public final class AetherEngine: ObservableObject { // has already unloaded the item, so there is nothing left to hand over in place. let handOverInPlace = consumeInPlaceItemHandoverRequest(priorBackendWasNative: priorBackendWasNative) cancelPendingAudioSelection() + releaseHeldPicture(reason: "new load") pendingInPlaceItemHandover = handOverInPlace // #128 follow-up: preserve the previous session's display criteria across the load seam. Nil-ing it // here bounces the panel through SDR before apply() re-negotiates the same mode on video->video @@ -4305,8 +4461,9 @@ public final class AetherEngine: ObservableObject { do { // Detach avformat_open_input + find_stream_info off @MainActor (~6 s on a slow CDN). // AetherEngine#10: a @MainActor async body without a suspension point blocks the main thread - // despite the async signature; Task.detached.value introduces a real background hop. - try await Task.detached(priority: .userInitiated) { [probe, source, options] in + // despite the async signature; a detached task's value introduces a real background hop, + // and BlockingWork keeps that hop off the cooperative pool while the open blocks. + try await BlockingWork.detached(priority: .userInitiated) { [probe, source, options] in // Caller-bounded find_stream_info budget (#68); nil keeps the .playback default. This probe // demuxer is reused as the session demuxer, so the cap lands on the open that actually pays it. let probeProfile = DemuxerOpenProfile.playback.withProbeBudget( @@ -4314,6 +4471,7 @@ public final class AetherEngine: ObservableObject { .withSequentialOrigin(options.sequentialOrigin, declaredDuration: options.declaredDurationSeconds) .withHeldSourceConnection(options.heldSourceConnection) + .withSourceOpenPolicy(options.sourceOpenPolicy) switch source { case .url(let u): // isLive configures the AVIOReader for endless-feed mode; must be set at open time because @@ -4355,7 +4513,7 @@ public final class AetherEngine: ObservableObject { colorTransfer: stream.pointee.codecpar.pointee.color_trc, colorMatrix: stream.pointee.codecpar.pointee.color_space) { let auditHeaders = options.httpHeaders - detectedDVRPUProfile = await Task.detached(priority: .userInitiated) { + detectedDVRPUProfile = await BlockingWork.detached(priority: .userInitiated) { DolbyVisionRecordAudit.rpuProfileOfSource(url: auditURL, extraHeaders: auditHeaders) }.value correctedDVProfile = DolbyVisionRecordAudit.correctedProfile( @@ -4419,7 +4577,7 @@ public final class AetherEngine: ObservableObject { if loadGeneration != gen { probe.markClosed() if probeOpened { - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } } try checkLoadCurrent(gen) } @@ -4432,10 +4590,19 @@ public final class AetherEngine: ObservableObject { // Custom sources have no URL to reopen from: a failed probe is fatal. if case .custom = source, !probeOpened { - publishError(.customSourceProbeFailed, "Failed to load: custom source probe failed") + publishError(.customSourceProbeFailed, "Failed to load: custom source probe failed", underlying: probeFailure) throw DemuxerError.openFailed(code: -1) } + // The reader already spent the configured initial and recovery budgets. Reopening + // the same source in HLSVideoEngine would silently repeat that entire wait. + if !options.isLive, let failure = probeFailure as? AVIOReaderError, + failure == .requestTimeout || failure == .noResponse { + let transport = URLError(failure == .requestTimeout ? .timedOut : .cannotConnectToHost) + publishError(.sourceOpenFailed, "Source did not respond within the opening budget", underlying: transport) + throw failure + } + // AE#363: an HLS playlist URL on the raw-byte live path, which AE#140 detects at the byte source // (#EXTM3U where a container's first byte belongs) instead of looping its endless-feed reconnect. // That detection stays; its destination changes. AE#140 handed the host a typed rejection naming @@ -4521,6 +4688,14 @@ public final class AetherEngine: ObservableObject { // Forward-only custom sources cannot rewind; audio-switch and background-reload stay no-op for them. customSourceIsSeekable = isCustomSource ? probe.isSourceSeekable : false + isSourceSeekable = probeOpened ? probe.isSourceSeekable : nil + if !options.isLive, isSourceSeekable == false { + // The byte source and AVPlayer must mount at the same place. A container duration + // does not make a saved position reachable on a forward-only source. + startPosition = nil + positionUnderReconstruction = nil + clock.currentTime = 0 + } // sourceVideoFormat = what's in the file; videoFormat = what the panel shows (published after // the criteria handshake; see panelHDRAfterHandshake below). @@ -4577,7 +4752,16 @@ public final class AetherEngine: ObservableObject { let selectedAudio = Self.selectAudioIndex( tracks: probedAudioTracks, override: audioSourceStreamIndex, - preferredLanguages: options.preferredAudioLanguages + preferredLanguages: options.preferredAudioLanguages, + // Only where the spatial bridge can run: the loopback route of a VOD video session on an OS + // with the APAC encoder. Live, audio-only, the software path and older systems would decode + // TrueHD or DTS for its 7.1 bed and no heights, so the default track keeps its place there. + prefersObjectAudio: options.objectAudioRendering != .off && ObjectAudioRendering.isAvailable + && !options.isLive && !options.audioOnly + && !VideoRoutingPolicy.requiresSoftwarePath( + codecID: detectedCodecID, fieldOrder: detectedFieldOrder, + av1Available: VTCapabilityProbe.av1Available), + defaultIndex: probedDefaultAudioIndex ) ?? (probeOpened ? nil : audioSourceStreamIndex) let resolvedInitialAudio = selectedAudio ?? probedDefaultAudioIndex activeAudioTrackIndex = resolvedInitialAudio >= 0 ? Int(resolvedInitialAudio) : nil @@ -4700,7 +4884,7 @@ public final class AetherEngine: ObservableObject { if loadGeneration != gen { probe.markClosed() if probeOpened { - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } } try checkLoadCurrent(gen) } @@ -4765,7 +4949,7 @@ public final class AetherEngine: ObservableObject { if loadGeneration != gen { probe.markClosed() if probeOpened { - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } } try checkLoadCurrent(gen) } @@ -4900,14 +5084,14 @@ public final class AetherEngine: ObservableObject { fieldOrder: detectedFieldOrder, spsIndicatesInterlaced: spsIndicatesInterlaced) { let videoIdx = probe.videoStreamIndex - let verdict = await Task.detached(priority: .userInitiated) { [probe] in + let verdict = await BlockingWork.detached(priority: .userInitiated) { [probe] in let verdict = InterlaceProbe.run(demuxer: probe, streamIndex: videoIdx) probe.seek(to: 0) // sample consumed packets; the session reuses this demuxer return verdict }.value if loadGeneration != gen { probe.markClosed() - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } try checkLoadCurrent(gen) } if InterlaceProbe.refutesDeclaredInterlace(verdict) { @@ -5059,7 +5243,7 @@ public final class AetherEngine: ObservableObject { dvBlCompatID: dvConfig.blCompatID, presentsDolbyVisionBaseLayer: presentsDolbyVisionBaseLayer) { probe.markClosed() - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } let profileLabel = detectedCodecID == AV_CODEC_ID_AV1 ? "10.0" : "5" EngineLog.emit( "[AetherEngine] DV Profile \(profileLabel) routed to the software path; IPT-PQ-c2 has " @@ -5076,7 +5260,7 @@ public final class AetherEngine: ObservableObject { (customReader as? LiveIngestSourceInfo)?.companionAudioReader != nil, probe.audioStreamIndex < 0 { probe.markClosed() - Task.detached { [probe] in probe.close() } + BlockingWork.detached { [probe] in probe.close() } EngineLog.emit( "[AetherEngine] demuxed-audio live source routed to the software path " + "(codec=\(detectedCodecID.rawValue)); side-audio merge is native-only, failing fast", @@ -5536,6 +5720,18 @@ public final class AetherEngine: ObservableObject { return } } + if !isLive, loadedOptions.sequentialOrigin || isSourceSeekable == false { + EngineLog.emit("[AetherEngine] seek(to:\(seconds)) rejected: source is forward-only", category: .engine) + // A seek stashed during load must relinquish its optimistic clock as well. + let wasDeferred = deferredSeekInFlight + endDeferredSeek(.superseded) + if wasDeferred { + clock.currentTime = nativeHost.map { displaySeconds(forPlaylistSeconds: $0.currentTime) } + ?? PresentationAxis.display(sourcePTS: clock.sourceTime, origin: sourcePresentationOrigin) + } + emitSeekRejected(.sourceNotSeekable, target: seconds) + return + } // #127: pre-ready native item (background-teardown reload, cold start): forwarding the seek now // would clamp to 0 against empty seekable ranges and replace load()'s pending startPosition seek. // Stash the latest target (publishing it optimistically so scrub UI follows) and replay at readiness. @@ -5556,13 +5752,17 @@ public final class AetherEngine: ObservableObject { let liveLanding: (sessionTarget: Double, clockTarget: Double)? = isLive ? liveWindow.map { Self.liveSeekLanding(requested: seconds, window: $0, - itemEnd: nativeHost?.seekableEnd ?? 0, - shift: playlistShiftSeconds, - axis: presentationAxis, + itemEnd: nativeItemSeekableEnd, + shift: liveSessionShiftSeconds, + axis: liveSessionSeekAxis, origin: origin, - residentRange: origin == .liveRejoin + residentRange: origin == .liveRejoin || videoRoute == .loopback ? residentLiveRangeSessionSeconds() : nil, - itemAxisOffset: liveItemAxisOffsetSeconds) + itemAxisOffset: liveItemAxisOffsetSeconds, + // The effective allowance after a lease renewal or expiry (#714). + nativePlayedTime: videoRoute == .loopback + && $0.windowSeconds != nil + ? currentTime : nil) } : nil var target: Double = isLive @@ -5588,7 +5788,7 @@ public final class AetherEngine: ObservableObject { let resident = residentLiveRangeSessionSeconds() let held = abs(target - seconds) < 0.5 let itemRange = nativeHost.map { - "\(String(format: "%.2f", $0.seekableStart + playlistShiftSeconds))..\(String(format: "%.2f", $0.seekableEnd + playlistShiftSeconds))s" + "\(String(format: "%.2f", $0.seekableStart + liveSessionShiftSeconds + liveItemAxisOffsetSeconds))..\(String(format: "%.2f", $0.seekableEnd + liveSessionShiftSeconds + liveItemAxisOffsetSeconds))s" } ?? "no range" EngineLog.emit( "[AetherEngine] #446 rejoin to \(String(format: "%.2f", seconds))s" @@ -5607,8 +5807,7 @@ public final class AetherEngine: ObservableObject { state = .seeking // Span isSeeking across the real landing, not just the optimistic .playing flip (#38). // Generation guard at each finalize point prevents a superseded seek from clearing it. - seekGeneration &+= 1 - let seekGen = seekGeneration + let seekGen = advanceSeekGeneration() // A stash resolving into this seek hands its window over without a gap in `isSeeking`: the // deferred flag clears in the same recompute that sets the programmatic one. closeSeekTicket(&deferredSeekTicket, with: .superseded) @@ -5654,13 +5853,12 @@ public final class AetherEngine: ObservableObject { closeSeekTicket(&programmaticSeekTicket, with: .landed(renderedTime: target)) return } - // AE#446 round 3: the conversion is the seam-aware one, decided in `liveSeekLanding` - // from the same sample the clamp above used. The edge-delta form it replaces read the - // published edge and the item's clock as if they were one state, which they stop being - // at exactly the moments a rejoin runs in. - let clockTarget = liveLanding?.clockTarget ?? max(0, target - playlistShiftSeconds) + // Convert the sampled session target to the item clock. Live loopback uses its stable + // session axis so a source PTS rollback cannot name a future, nonexistent item time. + let clockTarget = liveLanding?.clockTarget ?? max(0, target - liveSessionShiftSeconds) EngineLog.emit("[AetherEngine] live seek target=\(target) clockTarget=\(clockTarget) " - + "seekableEnd=\(nativeHost?.seekableEnd ?? 0) shift=\(playlistShiftSeconds) " + + "seekableEnd=\(nativeItemSeekableEnd) sessionShift=\(liveSessionShiftSeconds) " + + "sourceShift=\(playlistShiftSeconds) " + "publishedEdge=\(liveWindow?.edgeTime ?? 0)", category: .engine) // Publish target up front to hold the scrub clock while the host suppresses stale pre-seek reads. // Only currentTime takes the optimistic target; sourceTime stays on the rendered frame (#49). @@ -5670,7 +5868,6 @@ public final class AetherEngine: ObservableObject { guard loadGeneration == loadGen, seekGeneration == seekGen else { return } nativeClockSeconds = clockTarget clock.currentTime = target - clock.sourceTime = target // publishLiveWindow on the next tick recomputes behindLiveSeconds. if let nativeHost { reconcileNativeSeekTransport(host: nativeHost, isStarved: false) @@ -6066,10 +6263,13 @@ public final class AetherEngine: ObservableObject { // A superseding seek owns the final state. guard loadGeneration == gen, seekGeneration == seekGen else { return } setPendingRecoverySeekTarget(nil) - nativeClockSeconds = clockTarget - clock.currentTime = target - // sourceTime + subtitle re-arm need true source PTS; map the display target back (0 off disc). AE#105. - let landedSourcePTS = PresentationAxis.source(displayTime: target, origin: sourcePresentationOrigin) + // Publish the measured native landing, not the optimistic request. The two can differ + // slightly even after a successful callback; subtitle anchors and SeekEvent must agree. + let landedClock = nativeOnly ? (nativeHost?.currentTime ?? clockTarget) : clockTarget + let landedDisplay = nativeOnly ? displaySeconds(forPlaylistSeconds: landedClock) : target + nativeClockSeconds = landedClock + clock.currentTime = landedDisplay + let landedSourcePTS = PresentationAxis.source(displayTime: landedDisplay, origin: sourcePresentationOrigin) // #123: only settle sourceTime onto the target when the landed frame is actually presented (see // applySeekFinalizeSourceTime); while buffering toward it the picture is frozen behind the target, // so hold sourceTime on the rendered frame and let the $renderedTime sink settle it when the frame @@ -6152,7 +6352,7 @@ public final class AetherEngine: ObservableObject { /// (old.stop + waitForFinish up to 5s) and is designed to run off-main, so dispatch it detached. private func reanchorProducerToPlaylistTime(_ seconds: Double) { guard let session = nativeVideoSession else { return } - Task.detached { + BlockingWork.detached { let idx = session.segmentIndexForPlaylistTime(seconds) // Authoritative re-anchor: deadline recovery must win the coalescer over any stale // in-flight scrub target. @@ -6260,6 +6460,7 @@ public final class AetherEngine: ObservableObject { public func stop(resetDisplayCriteria: Bool = true, finalTeardown: Bool? = nil) { cancelPendingAudioSelection() + releaseHeldPicture(reason: "stop") nextLoadRequestsInPlaceItemHandover = false stopInternal(resetDisplayCriteria: resetDisplayCriteria, finalTeardown: finalTeardown ?? resetDisplayCriteria) @@ -6355,9 +6556,13 @@ public final class AetherEngine: ObservableObject { didSet { observeExternalPlayback() observeCurrentItem() + followAtmosOutput() } } + /// Keeps the HDMI route in Atmos while `currentAVPlayer` plays APAC (tvOS; see `followAtmosOutput`). + var atmosOutputActivator: AtmosOutputActivator? + /// Item currently loaded into `currentAVPlayer` (#260). Published separately because items are swapped in /// place (`replaceCurrentItem`, on every audio-track reload and episode autoplay) without the player itself /// changing, so a host holding the item or its timebase gets no signal from `currentAVPlayer` alone. @@ -6930,7 +7135,8 @@ public final class AetherEngine: ObservableObject { (audioAVPlayerActive || audioHost != nil) ? 3.0 : 2.0 } - /// Set playback speed. Clamped to `maxSupportedRate` (AetherEngine#39). 0 pauses. + /// Set playback speed. Clamped to `maxSupportedRate` (AetherEngine#39). 0 pauses. While paused a + /// non-zero rate is kept for the next `play()` instead of resuming (#730). /// Both paths are pitch-preserving: the engine pins `audioTimePitchAlgorithm` to TimeDomain on the /// native `AVPlayerItem` and on the software path's audio renderer, so speed never depends on which /// decode route a title took (#434). @@ -6942,6 +7148,13 @@ public final class AetherEngine: ObservableObject { } // Zero is a pause, not a speed: it must not become what a later resume comes back at (#436). if clamped != 0 { desiredRate = clamped } + // #730: while paused a speed is a speed, not a play press. Handing it to the host would play + // (`avPlayer.rate = x`) behind a state that still says paused; seeding the resume rate is what + // the next play() reads on every host. + if state == .paused && clamped != 0 { + activeTransportHost?.setResumeRate(clamped) + return + } activeTransportHost?.setRate(clamped) } @@ -7242,6 +7455,7 @@ public final class AetherEngine: ObservableObject { remoteHLSPreparationTask?.cancel() remoteHLSPreparationTask = nil remoteHLSSubtitleProxy?.server.relay?.stop() + scrubPreviewSourceGeneration = UUID() resumeAfterInterruption = false #if os(iOS) || os(tvOS) // A deactivation still queued from a previous teardown must not land on this session (#215). @@ -7328,6 +7542,7 @@ public final class AetherEngine: ObservableObject { // #127: readiness + deferred host seeks are session-scoped; the host-side sink can't clear them // once nativeCancellables are gone. isSessionReady = false + isSourceSeekable = nil // #315: session-scoped for the same reason, and the host mirrors are being cut here. hasFirstFrameReadyForDisplay = false // AE#440: so does "this session has moved once". A reused native host carries the outgoing @@ -7415,6 +7630,7 @@ public final class AetherEngine: ObservableObject { activeAudioDecoder = nil lastDetectedVideoCodec = AV_CODEC_ID_NONE playlistShiftSeconds = 0 + liveDisplayShiftSeconds = nil // AE#105 / AE#270: the display origin belongs to the session that published it. Clearing it here // rather than only in stop() keeps a load that reuses the engine (the common path: load() runs // stopInternal itself) from folding the previous source's PTS origin into the new one's clock. @@ -7787,6 +8003,7 @@ public final class AetherEngine: ObservableObject { let action = Self.backgroundAction( isAudioBackend: audioAVPlayerActive || audioHost != nil, hasSoftwareHost: softwareHost != nil, + softwareHostHasAudio: softwareHost?.audioDelivery == .decoded, keepVideoAlive: keepAlive, pipActive: pictureInPictureActive, state: state @@ -7802,6 +8019,10 @@ public final class AetherEngine: ObservableObject { case .perform(.enterSoftwareAudioOnly): softwareHost?.enterBackgroundAudioOnly() case .perform(.teardownVideo): + if keepAlive { + EngineLog.emit("[AetherEngine] AE#739 the software host renders no audio, releasing it " + + "instead of entering background audio-only", category: .engine) + } await teardownVideoForBackground() case .deferTeardown(let seconds): #if os(iOS) @@ -7914,6 +8135,7 @@ public final class AetherEngine: ObservableObject { return Self.backgroundAction( isAudioBackend: audioAVPlayerActive || audioHost != nil, hasSoftwareHost: softwareHost != nil, + softwareHostHasAudio: softwareHost?.audioDelivery == .decoded, keepVideoAlive: keepAlive, pipActive: pictureInPictureActive, state: state diff --git a/Sources/AetherEngine/Audio/AtmosConfirmationWorker.swift b/Sources/AetherEngine/Audio/AtmosConfirmationWorker.swift index 52f3cb542..c2016f9ad 100644 --- a/Sources/AetherEngine/Audio/AtmosConfirmationWorker.swift +++ b/Sources/AetherEngine/Audio/AtmosConfirmationWorker.swift @@ -66,7 +66,7 @@ extension AetherEngine { let formatHint = customFormatHint let probesize = loadedOptions.probesize let maxAnalyzeDuration = loadedOptions.maxAnalyzeDuration - atmosConfirmationTask = Task.detached(priority: .utility) { [weak self] in + atmosConfirmationTask = BlockingWork.detached(priority: .utility) { [weak self] in await self?.runAtmosConfirmation( url: url, formatHint: formatHint, headers: headers, callerProbesize: probesize, callerMaxAnalyzeDuration: maxAnalyzeDuration, diff --git a/Sources/AetherEngine/Audio/AudioOutput.swift b/Sources/AetherEngine/Audio/AudioOutput.swift index 43fa2915b..2c9f279ac 100644 --- a/Sources/AetherEngine/Audio/AudioOutput.swift +++ b/Sources/AetherEngine/Audio/AudioOutput.swift @@ -9,6 +9,11 @@ final class AudioOutput: @unchecked Sendable { let renderer: AVSampleBufferAudioRenderer let synchronizer: AVSampleBufferRenderSynchronizer + /// AE#395: the renderers' axis. Every time this object takes or returns is on the source axis; + /// the conversion happens here, at the renderer and synchronizer calls, and in the video renderer + /// that shares this timeline. + let timeline = RendererTimeline() + private let lock = NSLock() /// AE#464: the host's audio presentation offset, applied to every buffer on its way into the @@ -110,8 +115,8 @@ final class AudioOutput: @unchecked Sendable { queue: nil ) { [weak self] note in guard let self else { return } - let flushedFrom = (note.userInfo?[AVSampleBufferAudioRendererFlushTimeKey] as? NSValue)? - .timeValue.seconds + let flushedFrom = (note.userInfo?[AVSampleBufferAudioRendererFlushTimeKey] as? NSValue) + .map { self.timeline.sourceTime(forRenderer: $0.timeValue).seconds } automaticFlushQueue.async { [weak self] in guard let self else { return } lock.lock() @@ -164,14 +169,14 @@ final class AudioOutput: @unchecked Sendable { /// Set playback speed (0.5-2.0). Hosts own rate state (lastRate/pausedByHost); this object is stateless about it. func setRate(_ rate: Float) { let at = synchronizer.currentTime() - EngineLog.emit("[AudioOutput] setRate \(rate) at t=\(String(format: "%.3f", at.seconds))", category: .swPlayback) + EngineLog.emit("[AudioOutput] setRate \(rate) at t=\(String(format: "%.3f", timeline.sourceSeconds(forRenderer: at.seconds)))", category: .swPlayback) synchronizer.setRate(rate, time: at) } /// Pause audio (and the master clock). Hosts resume via setRate (pausedByHost pattern); deliberately no resume() here. func pause() { let at = synchronizer.currentTime() - EngineLog.emit("[AudioOutput] pause at t=\(String(format: "%.3f", at.seconds))", category: .swPlayback) + EngineLog.emit("[AudioOutput] pause at t=\(String(format: "%.3f", timeline.sourceSeconds(forRenderer: at.seconds)))", category: .swPlayback) synchronizer.setRate(0.0, time: at) } @@ -179,11 +184,11 @@ final class AudioOutput: @unchecked Sendable { /// sample runs whenever its task is scheduled, and on a starved main actor that is after the clock /// has walked on (#694: 1.149 s on a 1.0 s source on a CI runner). func pause(notAfter latest: Double) { - let now = synchronizer.currentTime() + let now = timeline.sourceTime(forRenderer: synchronizer.currentTime()) let seconds = SoftwareEndOfMediaClock.parkSeconds(clockSeconds: CMTimeGetSeconds(now), notAfter: latest) let at = seconds.map { CMTime(seconds: $0, preferredTimescale: 90000) } ?? now EngineLog.emit("[AudioOutput] pause at t=\(String(format: "%.3f", at.seconds))", category: .swPlayback) - synchronizer.setRate(0.0, time: at) + synchronizer.setRate(0.0, time: timeline.rendererTime(forSource: at)) } /// AE#464: set the audio presentation offset. Positive presents audio later than video, which on @@ -218,7 +223,9 @@ final class AudioOutput: @unchecked Sendable { return false } let offset = presentationOffset - let delivered = offset == .zero ? sampleBuffer : Self.retimed(sampleBuffer, by: offset) + // AE#395: the lip-sync offset and the move onto the renderer axis are one retime, not two copies. + let shift = CMTimeSubtract(offset, timeline.offset(latchingFrom: sampleBuffer)) + let delivered = shift == .zero ? sampleBuffer : Self.retimed(sampleBuffer, by: shift) var offsetLine: String? if offset != .zero, !loggedOffsetInEffect, delivered !== sampleBuffer { loggedOffsetInEffect = true @@ -301,8 +308,31 @@ final class AudioOutput: @unchecked Sendable { } var currentTime: CMTime { - synchronizer.currentTime() + timeline.sourceTime(forRenderer: synchronizer.currentTime()) + } + + /// AE#395: the master clock on the source axis, for an overlay paced against it (#311). The + /// synchronizer's own timebase until the origin latches at a non-zero value, then a child of it + /// shifted by that origin, which follows every rate change of its parent by construction. Read it + /// per use rather than holding it across a session start. + var sourceTimebase: CMTimebase { + guard let origin = timeline.origin, origin != 0 else { return synchronizer.timebase } + lock.lock() + defer { lock.unlock() } + if let shiftedTimebase { return shiftedTimebase } + var child: CMTimebase? + guard CMTimebaseCreateWithSourceTimebase(allocator: kCFAllocatorDefault, + sourceTimebase: synchronizer.timebase, + timebaseOut: &child) == noErr, + let child, + CMTimebaseSetRateAndAnchorTime(child, rate: 1, anchorTime: RendererTimeline.cmTime(origin), + immediateSourceTime: .zero) == noErr else { + return synchronizer.timebase + } + shiftedTimebase = child + return child } + private var shiftedTimebase: CMTimebase? var currentTimeSeconds: Double { let t = CMTimeGetSeconds(currentTime) @@ -339,6 +369,6 @@ final class AudioOutput: @unchecked Sendable { lock.lock() defer { lock.unlock() } EngineLog.emit("[AudioOutput] seekClock to=\(String(format: "%.3f", time.seconds)) rate=\(rate)", category: .swPlayback) - synchronizer.setRate(rate, time: time) + synchronizer.setRate(rate, time: timeline.rendererTime(forSource: time)) } } diff --git a/Sources/AetherEngine/Audio/AudioTranscodingBridge.swift b/Sources/AetherEngine/Audio/AudioTranscodingBridge.swift index bb1c6b9cd..a9207b3ff 100644 --- a/Sources/AetherEngine/Audio/AudioTranscodingBridge.swift +++ b/Sources/AetherEngine/Audio/AudioTranscodingBridge.swift @@ -18,9 +18,17 @@ protocol AudioTranscodingBridge: AnyObject, Sendable { /// to keep movenc's. var soundSampleEntryOverride: Data? { get } + /// Channels the delivered track really carries, for the master's `CHANNELS`, when the muxer's + /// codec parameters describe a stand-in instead (the APAC bed behind a 2-channel ALAC stand-in). + /// Nil reads the count off `encoderCodecpar`. + var servedChannelCount: Int? { get } + /// Decode, transcode and return 0+ packets in `encoderTimeBase`. The caller owns them and frees /// them with `trackedPacketFree` after muxing. func feed(packet: UnsafePointer) throws -> [UnsafeMutablePointer] + /// Packets for audio already fed that the bridge is still encoding, waited for. The producer + /// calls it before cutting a segment, so a cut splits the audio where a synchronous encode would. + func settle() -> [UnsafeMutablePointer] /// Drain at source EOF. The bridge is unusable afterwards until `startSegment`. func flush() -> [UnsafeMutablePointer] /// A producer restart boundary: drop buffered audio and rebase timestamps off the next packet. @@ -37,4 +45,6 @@ protocol AudioTranscodingBridge: AnyObject, Sendable { extension AudioBridge: AudioTranscodingBridge { var soundSampleEntryOverride: Data? { nil } + var servedChannelCount: Int? { nil } + func settle() -> [UnsafeMutablePointer] { [] } } diff --git a/Sources/AetherEngine/Audio/RendererTimeline.swift b/Sources/AetherEngine/Audio/RendererTimeline.swift new file mode 100644 index 000000000..425bea3a1 --- /dev/null +++ b/Sources/AetherEngine/Audio/RendererTimeline.swift @@ -0,0 +1,100 @@ +import Foundation +import CoreMedia + +/// AE#395: the axis the renderers and their synchronizer run on, as distinct from the source axis. +/// +/// Everything above the renderers (demuxer, decoders, the host's clock reads, subtitle cues, frame +/// times) stays on the source axis. Only the stamps handed to `AVSampleBufferAudioRenderer`, +/// `AVSampleBufferVideoRenderer` and the synchronizer are moved, by `origin`, so `renderer = source - +/// origin`. Measured on a Belkin AirPlay 2 receiver from tvOS 27.0: one capture, offset to start at +/// 0 and 40002 s, played; offset to 50002 s, and at its original 59670 s, it was silent, renderer +/// rendering and clock at 1.00 throughout. The line sits at 2^31 samples of 48 kHz (44739 s), so a +/// live channel whose PTS carries a broadcast clock never reaches that receiver. A Sonos fed the same +/// sessions played all of them, which is why only the renderer stamps move and nothing else. +/// +/// The origin latches at the session's first stamp, from whichever of the clock anchor, the first +/// audio buffer and the first video frame comes first, and holds for the whole session: buffers +/// already queued keep the stamps they were given, so it can never move under them. +final class RendererTimeline: @unchecked Sendable { + + private let lock = NSLock() + private var _origin: Double? + + /// Source seconds the renderers call zero, nil until the first stamp. + var origin: Double? { + lock.lock() + defer { lock.unlock() } + return _origin + } + + /// The renderer stamp for a source time, latching the origin on first use. An invalid or + /// non-numeric time passes through unchanged and latches nothing. + func rendererTime(forSource time: CMTime) -> CMTime { + guard time.isNumeric else { return time } + let offset = latchedOffset(firstSourceSeconds: CMTimeGetSeconds(time)) + return offset == .zero ? time : CMTimeSubtract(time, offset) + } + + /// The source time for a renderer stamp or clock reading. Never latches: a read before the first + /// stamp has no origin to apply. + func sourceTime(forRenderer time: CMTime) -> CMTime { + guard time.isNumeric, let origin, origin != 0 else { return time } + return CMTimeAdd(time, Self.cmTime(origin)) + } + + /// The source time for a renderer stamp in seconds, the counterpart for lines that only log. + func sourceSeconds(forRenderer seconds: Double) -> Double { + seconds + (origin ?? 0) + } + + /// Offset to subtract from every stamp in a sample buffer, latching the origin from its first + /// presentation stamp. + func offset(latchingFrom sampleBuffer: CMSampleBuffer) -> CMTime { + let pts = CMSampleBufferGetPresentationTimeStamp(sampleBuffer) + guard pts.isNumeric else { return origin.map(Self.cmTime) ?? .zero } + return latchedOffset(firstSourceSeconds: CMTimeGetSeconds(pts)) + } + + private func latchedOffset(firstSourceSeconds seconds: Double) -> CMTime { + lock.lock() + let origin: Double + let latchedNow: Bool + if let existing = _origin { + origin = existing + latchedNow = false + } else { + origin = RendererTimelinePolicy.origin(firstSourceSeconds: seconds) + _origin = origin + latchedNow = true + } + lock.unlock() + if latchedNow, origin != 0 { + EngineLog.emit( + "[AudioOutput] AE#395 renderer timeline origin \(String(format: "%.3f", origin))s " + + "(first stamp \(String(format: "%.3f", seconds))s, renderers start at " + + "\(String(format: "%.3f", seconds - origin))s)", + category: .swPlayback) + } + return origin == 0 ? .zero : Self.cmTime(origin) + } + + static func cmTime(_ seconds: Double) -> CMTime { + CMTime(seconds: seconds, preferredTimescale: 90000) + } +} + +/// AE#395: where the renderer axis starts for a session, pure so it can be checked without a renderer. +/// +/// A source that starts within `headroomSeconds` of zero keeps origin 0, so an ordinary file plays on +/// exactly the stamps it always had. Anything later starts its renderers at `headroomSeconds`, which +/// leaves that much room for a seek back (a DVR window) before the stamps go negative, and about 9.4 +/// hours of forward play before they reach the 44739 s line again. +enum RendererTimelinePolicy { + + static let headroomSeconds: Double = 3 * 3600 + + static func origin(firstSourceSeconds seconds: Double) -> Double { + guard seconds.isFinite, seconds > headroomSeconds else { return 0 } + return (seconds - headroomSeconds).rounded(.down) + } +} diff --git a/Sources/AetherEngine/Audio/Spatial/APACEncodePipeline.swift b/Sources/AetherEngine/Audio/Spatial/APACEncodePipeline.swift new file mode 100644 index 000000000..0b6f7924e --- /dev/null +++ b/Sources/AetherEngine/Audio/Spatial/APACEncodePipeline.swift @@ -0,0 +1,245 @@ +import Foundation + +/// Runs an `APACEncoder` on its own serial queue, so the bridge decodes and renders the next chunk +/// while the previous one encodes. +/// +/// The two halves cost about the same: on Dolby's Unfold demo (27 s, M1, release build) the TrueHD +/// decode took 1.36 s, the APAC encode 1.26 s and everything else 0.06 s, each on one core. Run in +/// series that is 9.5x real time, which is what a seek past the cache waits for before the first +/// segment is served; overlapped it is set by the slower half alone. +/// +/// Rendered chunks travel in `PlaneBuffer`s from a fixed pool. `submit` hands one over and takes a +/// free one back, waiting when none is free, which is the backpressure: the producer never runs +/// more than the pool ahead of the encoder, so the audio a segment lacks at its cut stays a few +/// chunks long. The queue carries no QoS of its own, so each job runs at the QoS of the producer +/// that submitted it and follows the pump's retuning (AE#286). +/// +/// Packets are stamped on the worker by absolute position: each chunk says where its first frame +/// sits, and a run of the encoder (from one reset to the next) stamps packet k at the run's first +/// position plus k·1024. A failed encode resets the encoder and drops the chunk, so the next run +/// starts on the next chunk's own position and nothing after the failure moves. +@available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) +final class APACEncodePipeline: @unchecked Sendable { + + struct StampedPacket { + let data: Data + let isSync: Bool + /// Output time base: 48 kHz frames. + let pts: Int64 + } + + /// Planar float planes, one per bed channel, that grow on demand. Owned by one side at a time: + /// the caller between `acquire` and `submit`, the worker until it puts the buffer back. + final class PlaneBuffer: @unchecked Sendable { + private(set) var planes: [UnsafeMutablePointer] + private(set) var capacity: Int + + init(channels: Int, capacity: Int) { + self.capacity = capacity + planes = (0...allocate(capacity: capacity) } + } + + deinit { planes.forEach { $0.deallocate() } } + + /// Room for `frames`, keeping the first `keeping` frames of every plane. + func ensureCapacity(_ frames: Int, keeping: Int) { + guard frames > capacity else { return } + let grown = max(frames, capacity * 2) + for c in planes.indices { + let plane = UnsafeMutablePointer.allocate(capacity: grown) + plane.update(from: planes[c], count: keeping) + planes[c].deallocate() + planes[c] = plane + } + capacity = grown + } + } + + let leadingFrames: Int + let magicCookie: Data + + private let encoder: APACEncoder + private let queue = DispatchQueue(label: "AetherEngine.SpatialAudioBridge.encode") + + /// Guards everything below it. + private let cond = NSCondition() + private var freeBuffers: [PlaneBuffer] + private var ready: [StampedPacket] = [] + private var errors: [Error] = [] + /// Bumped by `reset`; a job submitted before it is skipped, and its output is never collected. + private var generation = 0 + private var pendingJobs = 0 + + /// Worker only. + private var runStart: Int64? + private var packetsInRun: Int64 = 0 + + /// `bufferCount` buffers in all: one the caller renders into, the rest queued or encoding. + init(encoder: APACEncoder, channels: Int, bufferFrames: Int, bufferCount: Int = 3) { + precondition(bufferCount >= 2, "one buffer to render into and one to encode") + self.encoder = encoder + leadingFrames = encoder.leadingFrames + magicCookie = encoder.magicCookie + freeBuffers = (0.. PlaneBuffer { acquire() } + + /// Queue `frames` frames of `buffer` for encoding, its first frame at `position`, and return a + /// free buffer to render the next chunk into. + func submit(_ buffer: PlaneBuffer, frames: Int, position: Int64) -> PlaneBuffer { + enqueue { [self] in + encode(buffer, frames: frames, position: position) + } release: { [self] in + release(buffer) + } + return acquire() + } + + /// End the encoder's current run: its tail is stamped on the run, and the next chunk starts a + /// new one on its own position. + func restart() { + enqueue { [self] in + stamp(encoder.flushIgnoringErrors()) + encoder.reset() + runStart = nil + } + } + + /// Move every packet stamped from now on by `frames`. + func shift(by frames: Int64) { + enqueue { [self] in + runStart = runStart.map { $0 + frames } + } + } + + /// Drain the encoder at end of stream and wait for it. Returns everything not yet collected. + func finish() -> (packets: [StampedPacket], errors: [Error]) { + enqueue { [self] in + stamp(encoder.flushIgnoringErrors()) + } + cond.lock() + while pendingJobs > 0 { cond.wait() } + cond.unlock() + return collect() + } + + /// Drop everything queued and encoded but not yet collected, and start the encoder over. + func reset() { + cond.lock() + generation += 1 + ready.removeAll() + errors.removeAll() + cond.unlock() + enqueue { [self] in + encoder.reset() + runStart = nil + packetsInRun = 0 + } + } + + /// The packets encoded so far, in order, and the encode errors since the last call. + func collect() -> (packets: [StampedPacket], errors: [Error]) { + cond.lock() + defer { cond.unlock() } + let out = (ready, errors) + ready.removeAll(keepingCapacity: true) + errors.removeAll() + return out + } + + /// Wait for every queued job, then collect. + func settle() -> (packets: [StampedPacket], errors: [Error]) { + close() + return collect() + } + + /// Wait for every queued job. + func close() { + cond.lock() + while pendingJobs > 0 { cond.wait() } + cond.unlock() + } + + // MARK: - Worker + + /// `release` runs whether the job ran or was skipped, after any output it made is collectable. + private func enqueue(_ job: @escaping @Sendable () -> Void, release: (@Sendable () -> Void)? = nil) { + cond.lock() + let submitted = generation + pendingJobs += 1 + cond.unlock() + queue.async { [self] in + cond.lock() + let current = submitted == generation + if current { workerGeneration = submitted } + cond.unlock() + if current { job() } + release?() + cond.lock() + pendingJobs -= 1 + cond.broadcast() + cond.unlock() + } + } + + private func encode(_ buffer: PlaneBuffer, frames: Int, position: Int64) { + if runStart == nil { + runStart = position + packetsInRun = 0 + } + do { + let planes = buffer.planes.map { UnsafePointer($0) } + stamp(try encoder.encode(planes: planes, frameCount: frames)) + } catch { + // Packet k of a run is stamped by its index, so a call that swallowed packets would + // leave every later one early. The chunk becomes a gap instead. + encoder.reset() + runStart = nil + cond.lock() + if generationMatches() { errors.append(error) } + cond.unlock() + } + } + + private func stamp(_ packets: [APACEncoder.Packet]) { + guard !packets.isEmpty, let start = runStart else { return } + var stamped: [StampedPacket] = [] + stamped.reserveCapacity(packets.count) + for packet in packets { + stamped.append(StampedPacket( + data: packet.data, isSync: packet.isSync, + pts: start + packetsInRun * Int64(APACEncoder.framesPerPacket))) + packetsInRun += 1 + } + cond.lock() + if generationMatches() { ready.append(contentsOf: stamped) } + cond.unlock() + } + + /// The generation of the job running on the worker. + private var workerGeneration = 0 + + /// Caller holds `cond`. False when a `reset` overtook the running job, whose output nobody wants. + private func generationMatches() -> Bool { workerGeneration == generation } + + private func release(_ buffer: PlaneBuffer) { + cond.lock() + freeBuffers.append(buffer) + cond.broadcast() + cond.unlock() + } + + private func acquire() -> PlaneBuffer { + cond.lock() + defer { cond.unlock() } + while freeBuffers.isEmpty { cond.wait() } + return freeBuffers.removeLast() + } +} + +@available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) +private extension APACEncoder { + func flushIgnoringErrors() -> [Packet] { (try? flush()) ?? [] } +} diff --git a/Sources/AetherEngine/Audio/Spatial/APACEncoder.swift b/Sources/AetherEngine/Audio/Spatial/APACEncoder.swift index 282ee1ed1..4334c971f 100644 --- a/Sources/AetherEngine/Audio/Spatial/APACEncoder.swift +++ b/Sources/AetherEngine/Audio/Spatial/APACEncoder.swift @@ -36,12 +36,14 @@ final class APACEncoder { case formatUnavailable(SpatialSpeakerLayout) case converterUnavailable(SpatialSpeakerLayout) case convertFailed(String) + case encodeAfterFlush var description: String { switch self { case .formatUnavailable(let l): return "APACEncoder: no APAC output format for \(l.rawValue)" case .converterUnavailable(let l): return "APACEncoder: this OS has no APAC encoder for \(l.rawValue)" case .convertFailed(let why): return "APACEncoder: convert failed (\(why))" + case .encodeAfterFlush: return "APACEncoder: encode after flush (reset first)" } } } @@ -56,9 +58,10 @@ final class APACEncoder { let leadingFrames: Int private let pcmFormat: AVAudioFormat - private let apacFormat: AVAudioFormat private let converter: AVAudioConverter private let inputBuffer: AVAudioPCMBuffer + /// Reused by every `drain`: at 16 × `maximumOutputPacketSize` it is 393 KB for 7.1.4. + private let outputBuffer: AVAudioCompressedBuffer private var ended = false /// `bitRate` is the target in bits per second. Apple's HLS table recommends 384 kbps for 7.1, @@ -80,7 +83,6 @@ final class APACEncoder { AVEncoderBitRateKey: bitRate, ] guard let apac = AVAudioFormat(settings: settings) else { throw EncoderError.formatUnavailable(layout) } - apacFormat = apac guard let conv = AVAudioConverter(from: pcmFormat, to: apac) else { throw EncoderError.converterUnavailable(layout) } @@ -92,13 +94,18 @@ final class APACEncoder { guard let cookie = conv.magicCookie, !cookie.isEmpty else { throw EncoderError.converterUnavailable(layout) } magicCookie = cookie leadingFrames = Int(conv.primeInfo.leadingFrames) + precondition(maxInputFrames > 0, "APACEncoder needs room for at least one input frame") inputBuffer = AVAudioPCMBuffer(pcmFormat: pcmFormat, frameCapacity: AVAudioFrameCount(maxInputFrames))! + outputBuffer = AVAudioCompressedBuffer( + format: apac, packetCapacity: 16, maximumPacketSize: max(conv.maximumOutputPacketSize, 1)) } /// Queue `frameCount` frames (one plane per layout channel) and return every packet the encoder /// completes. Larger inputs are fed in `maxInputFrames` slices. func encode(planes: [UnsafePointer], frameCount: Int) throws -> [Packet] { precondition(planes.count == layout.channelCount) + // The converter has seen end of stream and would swallow everything fed after it. + guard !ended else { throw EncoderError.encodeAfterFlush } var packets: [Packet] = [] var offset = 0 let capacity = Int(inputBuffer.frameCapacity) @@ -133,9 +140,7 @@ final class APACEncoder { private func drain(feeding input: AVAudioPCMBuffer?, endOfStream: Bool, into packets: inout [Packet]) throws { var supplied = input == nil - let output = AVAudioCompressedBuffer( - format: apacFormat, packetCapacity: 16, - maximumPacketSize: max(converter.maximumOutputPacketSize, 1)) + let output = outputBuffer while true { output.packetCount = 0 output.byteLength = 0 @@ -154,8 +159,9 @@ final class APACEncoder { } collect(output, into: &packets) // haveData: the output buffer filled and more may be waiting. Anything else means the - // encoder has emitted all it can from what it was given. - if status != .haveData { break } + // encoder has emitted all it can from what it was given. A haveData that produced + // nothing would never change, so it ends the loop too. + if status != .haveData || output.packetCount == 0 { break } } } diff --git a/Sources/AetherEngine/Audio/Spatial/APACSampleEntry.swift b/Sources/AetherEngine/Audio/Spatial/APACSampleEntry.swift index 90f1cfc83..053f88009 100644 --- a/Sources/AetherEngine/Audio/Spatial/APACSampleEntry.swift +++ b/Sources/AetherEngine/Audio/Spatial/APACSampleEntry.swift @@ -23,7 +23,10 @@ enum APACSampleEntry { body.append(contentsOf: [0, 2]) // channelcount body.append(contentsOf: [0, 16]) // samplesize body.append(contentsOf: [0, 0, 0, 0]) // pre_defined, reserved - let rate = UInt32(clamping: sampleRate) << 16 // 16.16 fixed point + // 16.16 fixed point: a v0 entry cannot state a rate above 65535 Hz, and the shift would + // wrap silently. Object audio is 48 kHz only. + precondition((1...65535).contains(sampleRate), "an AudioSampleEntry v0 holds rates up to 65535 Hz") + let rate = UInt32(sampleRate) << 16 body.append(contentsOf: bigEndian(rate)) body.append(magicCookie) var box = Data(bigEndian(UInt32(8 + body.count))) @@ -93,6 +96,8 @@ enum APACSampleEntry { // Every ancestor's header precedes the replaced entry, so its offset is the same in `out`. for ancestor in [stsd, stbl, minf, mdia, trak, moov] { let old = Int(u32(ancestor.start)!) + // Size 0 means "to the end of the file", which stays true after the splice. + if old == 0 { continue } let new = UInt32(old + delta) out.replaceSubrange(ancestor.start.. Bool = { _ in false } + private var observations: [NSKeyValueObservation] = [] + private var selectionObserver: NSObjectProtocol? + + init() { + player.automaticallyWaitsToMinimizeStalling = false + } + + /// Follows `host`: its item, its audio selection and whether it is playing. + func attach(to host: AVPlayer, playsAPAC: @escaping @MainActor (AVPlayerItem) -> Bool) { + detach() + self.host = host + self.playsAPAC = playsAPAC + // A host play() changes timeControlStatus synchronously on the main thread, so the stream + // starts inside that call, ahead of the APAC output. + observations = [ + host.observe(\.currentItem, options: [.initial]) { [weak self] _, _ in + Self.onMain { self?.follow(self?.host?.currentItem) } + }, + host.observe(\.timeControlStatus) { [weak self] _, _ in + Self.onMain { self?.update() } + }, + ] + } + + func detach() { + observations.forEach { $0.invalidate() } + observations = [] + host = nil + follow(nil) + } + + private func follow(_ item: AVPlayerItem?) { + if let selectionObserver { NotificationCenter.default.removeObserver(selectionObserver) } + selectionObserver = item.map { + NotificationCenter.default.addObserver( + forName: AVPlayerItem.mediaSelectionDidChangeNotification, object: $0, queue: .main + ) { [weak self] _ in + Self.onMain { self?.update() } + } + } + update() + } + + private func update() { + guard let host, let item = host.currentItem, playsAPAC(item) else { + release() + return + } + guard host.timeControlStatus != .paused else { + player.pause() + return + } + if looper == nil { + looper = AVPlayerLooper(player: player, templateItem: AVPlayerItem(url: Self.silentAtmosStream)) + } + player.play() + } + + private func release() { + guard let looper else { return } + player.pause() + looper.disableLooping() + self.looper = nil + player.removeAllItems() + } + + private nonisolated static func onMain(_ body: @escaping @MainActor @Sendable () -> Void) { + if Thread.isMainThread { + MainActor.assumeIsolated(body) + } else { + Task { @MainActor in body() } + } + } +} + +extension AetherEngine { + /// tvOS only: the switch is an HDMI one, and on iOS and macOS a second unmuted player beside the + /// engine's would compete with it for Now Playing and the audio session for no gain. + func followAtmosOutput() { + #if os(tvOS) + guard let player = currentAVPlayer else { + atmosOutputActivator?.detach() + return + } + let activator = atmosOutputActivator ?? AtmosOutputActivator() + atmosOutputActivator = activator + activator.attach(to: player) { [weak self] _ in self?.nativeVideoSession?.audioIsAPAC == true } + #endif + } + + /// #597: a media services reset invalidates the activator's own `AVQueuePlayer` along with the engine's, + /// and the engine only rebuilds its own. Dropped here, the next `currentAVPlayer` builds a fresh one. + func dropAtmosOutputActivator() { + atmosOutputActivator?.detach() + atmosOutputActivator = nil + } +} diff --git a/Sources/AetherEngine/Audio/Spatial/DTSXObjectAudioDecoder.swift b/Sources/AetherEngine/Audio/Spatial/DTSXObjectAudioDecoder.swift new file mode 100644 index 000000000..c70c2ee1c --- /dev/null +++ b/Sources/AetherEngine/Audio/Spatial/DTSXObjectAudioDecoder.swift @@ -0,0 +1,187 @@ +import Foundation +import DTSX + +/// DTS:X decoder over the LibDTSX library (the Rust `dca` crate behind a C API): lossless decode of +/// the DTS-HD Master Audio stream DTS:X is carried on, returned the way `TrueHDObjectAudioDecoder` +/// returns an Atmos presentation. The library does the DTS-specific work: it removes the heights +/// and objects the encoder folded into the compatible 7.1 bed, so the bed, the four fixed heights +/// and any objects play side by side, and it places DTS:X's angular object positions in the room +/// coordinates this renderer and LibTrueHD use (x left→right and y front→back on 0...1, z 0 ear +/// level to 1 ceiling). What is left here is naming the channels. +final class DTSXObjectAudioDecoder: ObjectAudioDecoding { + + struct DecoderError: Error, CustomStringConvertible { + let status: Int32 + let message: String + var description: String { "DTSXObjectAudioDecoder: status \(status) \(message)" } + } + + /// What the first frames of a stream showed (see `verdict(feeding:)`). + enum Verdict: Equatable { + /// DTS:X the decoder renders, named by its layout ("7.1.4", "7.1.4+2"). + case renders(String) + /// Not DTS:X, or DTS:X the library does not render; the message says which. + case refused(String) + } + + private let handle: OpaquePointer + private var roles: [ObjectAudioRole] = [] + private var rolesSerial: UInt32? + private var planes: [UnsafePointer] = [] + private(set) var selfResetCount = 0 + + init() throws { + guard let handle = dtsx_decoder_create() else { + throw DecoderError(status: DTSX_ERR_INVALID_ARGUMENT, message: "create failed") + } + self.handle = handle + } + + deinit { dtsx_decoder_destroy(handle) } + + /// Feeds one packet from the head of a stream and reports what it decodes, or nil while that is + /// undecided. FFmpeg names only two of DTS:X's markers, so a track it labels plain DTS-HD MA can + /// be DTS:X, and one it labels DTS:X can carry a presentation the library refuses: only a decoded + /// frame tells. The library decides on the first frame and outputs from the third (the first two + /// only rebuild the core's filter history), so a verdict takes three packets of DTS-HD. A stream + /// counts as rendered once a block arrives whose DTS:X extension applied. + func verdict(feeding bytes: UnsafeRawBufferPointer) -> Verdict? { + guard let base = bytes.baseAddress, bytes.count > 0 else { return nil } + var status = dtsx_decoder_push(handle, base.assumingMemoryBound(to: UInt8.self), bytes.count, Int64.min) + var block = DTSXBlock() + while status == DTSX_OK { + status = dtsx_decoder_pull(handle, &block) + if status == DTSX_OK { + // The renderer and the APAC encoder run at 48 kHz; the track's label said so, the + // stream itself has the last word. + guard block.sample_rate == 48000 else { + return .refused("\(block.sample_rate) Hz") + } + guard block.flags & DTSX_BLOCK_BED_AS_AUTHORED == 0 else { + return .refused("its DTS:X extension could not be applied (\(lastError))") + } + return .renders(String(cString: dtsx_presentation_name(block.presentation))) + } + } + return status == DTSX_NEED_MORE_DATA ? nil : .refused(lastError) + } + + func push(_ bytes: UnsafeRawBufferPointer) throws { + guard let base = bytes.baseAddress, bytes.count > 0 else { return } + let status = dtsx_decoder_push(handle, base.assumingMemoryBound(to: UInt8.self), bytes.count, Int64.min) + // BUFFER_FULL (8 MiB waiting) cannot happen behind the bridge, which drains every block after + // each push; a panic resets for the same reason as in `nextBlock`. + if status == DTSX_ERR_PANIC { + let failure = error(status) + reset() + selfResetCount += 1 + throw failure + } + guard status == DTSX_OK else { throw error(status) } + } + + func nextBlock() throws -> ObjectAudioDecodedBlock? { + var block = DTSXBlock() + let status = dtsx_decoder_pull(handle, &block) + if status == DTSX_NEED_MORE_DATA { return nil } + if status == DTSX_ERR_PANIC { + // The handle refuses every call until it is reset. Reset it here, so the stream resumes + // at the next frame instead of staying silent for the rest of the session. + let failure = error(status) + reset() + selfResetCount += 1 + throw failure + } + guard status == DTSX_OK else { throw error(status) } + + let channels = Int(block.channel_count) + if rolesSerial != block.layout_serial { + rolesSerial = block.layout_serial + roles = (0.. DecoderError { + DecoderError(status: status, message: lastError) + } + + // MARK: - Mapping + + /// The speaker codes are LibTrueHD's. A DTS:X bed is 7.1 (5.1 under one alternate presentation), + /// its four fixed heights are the top front and top back pairs, and the codes beyond those only + /// occur in beds no DTS:X stream tested had; each sits at its nominal position, as in + /// `TrueHDObjectAudioDecoder`. Objects, and a bed speaker the API has no code for, are + /// positioned by metadata. + static func role(forSpeaker code: UInt8) -> ObjectAudioRole { + switch code { + case DTSX_SPEAKER_LFE, DTSX_SPEAKER_LFE2: return .lfe + case DTSX_SPEAKER_L: return .bed(.left) + case DTSX_SPEAKER_R: return .bed(.right) + case DTSX_SPEAKER_C: return .bed(.center) + case DTSX_SPEAKER_LS: return .bed(.sideLeft) + case DTSX_SPEAKER_RS: return .bed(.sideRight) + case DTSX_SPEAKER_LB: return .bed(.rearLeft) + case DTSX_SPEAKER_RB: return .bed(.rearRight) + case DTSX_SPEAKER_LW: return .bed(.wideLeft) + case DTSX_SPEAKER_RW: return .bed(.wideRight) + case DTSX_SPEAKER_TFL: return .bed(.topFrontLeft) + case DTSX_SPEAKER_TFR: return .bed(.topFrontRight) + case DTSX_SPEAKER_TSL: return .bed(.topMiddleLeft) + case DTSX_SPEAKER_TSR: return .bed(.topMiddleRight) + case DTSX_SPEAKER_TBL: return .bed(.topRearLeft) + case DTSX_SPEAKER_TBR: return .bed(.topRearRight) + case DTSX_SPEAKER_LSC: return .fixed(SIMD3(0.25, 0, 0)) + case DTSX_SPEAKER_RSC: return .fixed(SIMD3(0.75, 0, 0)) + case DTSX_SPEAKER_CB: return .fixed(SIMD3(0.5, 1, 0)) + case DTSX_SPEAKER_LSD: return .fixed(SpatialSpeaker.sideLeft.position) + case DTSX_SPEAKER_RSD: return .fixed(SpatialSpeaker.sideRight.position) + case DTSX_SPEAKER_TC: return .fixed(SIMD3(0.5, 0.5, 1)) + // On the front-top row, where LibTrueHD's TFC and the ceiling pair since #742 sit. + case DTSX_SPEAKER_TFC: return .fixed(SIMD3(0.5, 0.25, 1)) + default: return .object + } + } + + /// DTS:X states no object gain, size or zone: an element is its room position. + static func state(for element: DTSXElement) -> ObjectAudioElementState { + let p = element.position + return ObjectAudioElementState( + position: SIMD3(p.0, p.1, max(0, p.2)), + gain: element.flags & DTSX_ELEMENT_ACTIVE != 0 ? element.gain : 0) + } +} diff --git a/Sources/AetherEngine/Audio/Spatial/ObjectAudioDecoding.swift b/Sources/AetherEngine/Audio/Spatial/ObjectAudioDecoding.swift index 3cfeceec4..a37ef490e 100644 --- a/Sources/AetherEngine/Audio/Spatial/ObjectAudioDecoding.swift +++ b/Sources/AetherEngine/Audio/Spatial/ObjectAudioDecoding.swift @@ -21,7 +21,7 @@ struct ObjectAudioDecodedBlock { var updates: [ObjectAudioMetadataUpdate] } -/// A decoder that turns an object-audio bitstream (TrueHD with Atmos) into signals plus the +/// A decoder that turns an object-audio bitstream (TrueHD with Atmos, DTS:X) into signals plus the /// metadata that positions them. Kept separate from the bridge so the bridge's timeline, renderer /// and encoder handling can be exercised with a synthetic decoder. protocol ObjectAudioDecoding: AnyObject { @@ -29,6 +29,18 @@ protocol ObjectAudioDecoding: AnyObject { func push(_ bytes: UnsafeRawBufferPointer) throws /// The next complete block, or nil when more input is needed. func nextBlock() throws -> ObjectAudioDecodedBlock? - /// Drop all state; decoding resumes at the next major sync. + /// Drop all state; decoding resumes at the next major sync (TrueHD) or frame (DTS:X). func reset() + /// Blocks the decoder still holds back come out of the next `nextBlock` calls as they are, and it + /// holds nothing more until the next reset. The bridge asks at end of input and before a segment + /// cut, where that audio belongs. + func releaseHeldBlocks() + /// How often the decoder has reset ITSELF after an internal failure. Its input offsets count from + /// zero again afterwards, so the caller has to re-anchor its timeline. + var selfResetCount: Int { get } +} + +extension ObjectAudioDecoding { + var selfResetCount: Int { 0 } + func releaseHeldBlocks() {} } diff --git a/Sources/AetherEngine/Audio/Spatial/ObjectAudioRenderer.swift b/Sources/AetherEngine/Audio/Spatial/ObjectAudioRenderer.swift index d12bc9c95..e2b0b98ad 100644 --- a/Sources/AetherEngine/Audio/Spatial/ObjectAudioRenderer.swift +++ b/Sources/AetherEngine/Audio/Spatial/ObjectAudioRenderer.swift @@ -7,6 +7,10 @@ enum ObjectAudioRole: Sendable, Equatable { /// target layout lacks (a 7.1.2 bed's top-middle pair on a 5.1.4 layout) still lands where it /// should, as a phantom between the speakers that bracket it. case bed(SpatialSpeaker) + /// A bed channel at a fixed position the room model names no speaker for (screen, centre back, + /// top centre). Rendered as a phantom from the moment the renderer exists, like a bed channel the + /// layout lacks, so it plays in a presentation that never sends metadata. + case fixed(SIMD3) /// The low-frequency effects channel. Routed to the layout's LFE, never panned. case lfe /// A dynamic object, positioned by metadata. @@ -75,7 +79,9 @@ final class ObjectAudioRenderer { rampTotal = rampRemaining hasMetadata = Array(repeating: false, count: roles.count) // Beds and LFE have gains the moment the renderer exists; objects wait for metadata and are - // silent until their first update, rather than guessing at a position. + // silent until their first update, rather than guessing at a position. The TrueHD decoder + // holds the blocks before that update and gives the first of them its state at frame 0 + // (`ObjectMetadataHold`), so after a reset that wait costs nothing audible. for (index, role) in roles.enumerated() where role != .object { staticGains(for: role, state: ObjectAudioElementState(), into: ¤t[index]) target[index] = current[index] @@ -90,8 +96,11 @@ final class ObjectAudioRenderer { hasMetadata[index] = false if roles[index] == .object { for c in current[index].indices { current[index][c] = 0 } - target[index] = current[index] + } else { + // A bed fade cut off by the reset would otherwise stay at the ramp's origin. + staticGains(for: roles[index], state: ObjectAudioElementState(), into: ¤t[index]) } + target[index] = current[index] } } @@ -121,9 +130,11 @@ final class ObjectAudioRenderer { updates: [ObjectAudioMetadataUpdate], outputs: [UnsafeMutablePointer] ) { - precondition(inputs.count == roles.count, "one input plane per role") - precondition(outputs.count == layout.channelCount, "one output plane per layout channel") for out in outputs { vDSP_vclr(out, 1, vDSP_Length(frameCount)) } + // A block from a configuration this renderer was not built for renders as silence rather than + // trapping: the bridge rebuilds on `configurationGeneration`, and a mismatch here is a stream + // that changed shape without saying so. + guard inputs.count == roles.count, outputs.count == layout.channelCount else { return } var cursor = 0 var pending = updates[...] @@ -155,7 +166,7 @@ final class ObjectAudioRenderer { panner(excluding: state.excluded).objectGains( position: state.position, size: state.size, snap: state.snap, into: &gains) if state.gain != 1 { for c in gains.indices { gains[c] *= state.gain } } - case .bed, .lfe: + case .bed, .lfe, .fixed: staticGains(for: roles[index], state: state, into: &gains) } // A ramp still in flight restarts from where it has got to, not from its origin. @@ -183,18 +194,37 @@ final class ObjectAudioRenderer { for c in gains.indices { gains[c] = 0 } gains[layout.lfeIndex] = state.gain case .bed(let speaker): - if let direct = layout.speakers.firstIndex(of: speaker) { + if let direct = layout.speakers.firstIndex(of: speaker) ?? Self.downmixTarget(speaker, in: layout) { for c in gains.indices { gains[c] = 0 } gains[direct] = state.gain } else { panner(excluding: []).pointGains(speaker.position, into: &gains) if state.gain != 1 { for c in gains.indices { gains[c] *= state.gain } } } + case .fixed(let position): + panner(excluding: []).pointGains(position, into: &gains) + if state.gain != 1 { for c in gains.indices { gains[c] *= state.gain } } case .object: break } } + /// Where a speaker-anchored bed channel the layout lacks goes when panning it would be wrong. A + /// 7.1 bed's side and rear surrounds both belong on a 5.1 layout's surround pair, the way a 7.1 to + /// 5.1 downmix folds them, and a 5.1 bed's surrounds on a 7.1 layout's sides, which sit where + /// TS 103 448 puts the 5.1 surrounds. Panned by position, a 5.1 surround would split between a + /// 7.1 layout's sides and rears. + static func downmixTarget(_ speaker: SpatialSpeaker, in layout: SpatialSpeakerLayout) -> Int? { + let speakers = layout.speakers + switch speaker { + case .sideLeft, .rearLeft: return speakers.firstIndex(of: .surroundLeft) + case .sideRight, .rearRight: return speakers.firstIndex(of: .surroundRight) + case .surroundLeft: return speakers.firstIndex(of: .sideLeft) + case .surroundRight: return speakers.firstIndex(of: .sideRight) + default: return nil + } + } + private func panner(excluding excluded: Set) -> AllocentricPanner { if let cached = panners[excluded] { return cached } let built = AllocentricPanner(layout: layout, excluded: excluded) diff --git a/Sources/AetherEngine/Audio/Spatial/ObjectAudioRendering.swift b/Sources/AetherEngine/Audio/Spatial/ObjectAudioRendering.swift index 5983cd6bc..dcce8a794 100644 --- a/Sources/AetherEngine/Audio/Spatial/ObjectAudioRendering.swift +++ b/Sources/AetherEngine/Audio/Spatial/ObjectAudioRendering.swift @@ -1,23 +1,32 @@ import Foundation -/// How a TrueHD track carrying Dolby Atmos is delivered. +/// How a TrueHD track carrying Dolby Atmos, or a DTS-HD Master Audio track carrying DTS:X, is +/// delivered. /// -/// Apple TV cannot bitstream TrueHD, so `audioBridgeMode` decodes its 7.1 channel presentation and -/// the Atmos objects and heights are lost. `.apac` keeps them: the engine renders the objects into -/// the listener's speaker bed and delivers it as Apple Positional Audio, which tvOS sends to an -/// Atmos receiver as Dolby MAT. The price is a lossy encode (several Mbit/s) in place of the -/// lossless 7.1, which is why this is the host's choice and not the engine's. +/// Apple TV cannot bitstream TrueHD or DTS-HD, so `audioBridgeMode` decodes their 7.1 channel +/// presentation and the objects and heights are lost. `.apac` keeps them: the engine renders the +/// objects and heights into the listener's speaker bed and delivers it as Apple Positional Audio, +/// which tvOS sends to an Atmos receiver as Dolby MAT. The price is a lossy encode (several Mbit/s) +/// in place of the lossless 7.1, which is why this is the host's choice and not the engine's. /// -/// Applies only to TrueHD sources FFmpeg identifies as Atmos (profile 30) at 48 kHz, and only on -/// OS 26 and later, where the APAC encoder API exists. Everything else keeps `audioBridgeMode`. +/// Applies to TrueHD sources FFmpeg identifies as Atmos (profile 30) and to DTS-HD Master Audio that +/// LibDTSX confirms as DTS:X on its first frames, at 48 kHz, and only on OS 26 and later, where the +/// APAC encoder API exists. Everything else keeps `audioBridgeMode`. public enum ObjectAudioRendering: Equatable, Sendable { case off /// Render into `layout`, which should match the speakers the receiver actually drives. case apac(SpatialSpeakerLayout) - /// The only rate object audio is rendered at. TrueHD Atmos is authored at 48 kHz. + /// The only rate object audio is rendered at. TrueHD Atmos and DTS:X are authored at 48 kHz. static let sampleRate = 48_000 + /// Whether this OS has the APAC encoder API the route needs. Below it, `.apac` changes nothing: + /// the track plays through `audioBridgeMode` as if rendering were off. + static var isAvailable: Bool { + if #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) { return true } + return false + } + var layout: SpatialSpeakerLayout? { if case .apac(let layout) = self { return layout } return nil diff --git a/Sources/AetherEngine/Audio/Spatial/ObjectMetadataHold.swift b/Sources/AetherEngine/Audio/Spatial/ObjectMetadataHold.swift new file mode 100644 index 000000000..7541ed0ff --- /dev/null +++ b/Sources/AetherEngine/Audio/Spatial/ObjectMetadataHold.swift @@ -0,0 +1,107 @@ +import Foundation + +/// Holds the blocks an object decoder returns between a reset and the stream's first object metadata. +/// +/// After a reset (a seek, a producer restart) TrueHD decoding resumes at the next major sync, but the +/// first OAMD payload follows it only 0 to 38 access units later (up to 32 ms on measured films). +/// The renderer has no position for an object until then, so rendered as they came, those blocks +/// played every object as silence: after a seek the APAC carried the LFE alone for 21 to 24 ms on +/// Nature's Fury. Held here instead, they are released when the payload arrives, the first of them +/// carrying that payload's first state as a jump at frame 0, so they play where the stream puts the +/// objects next. Only blocks with objects are held, at most `maxHeldFrames` of them, and none from the +/// first metadata until the next reset or configuration change, so steady-state blocks pass straight +/// through, uncopied. +final class ObjectMetadataHold { + + /// Payloads come every 1536 frames on measured streams. A stream that sends none this long after + /// a reset is released as it is, with its objects silent until their metadata, as without the hold. + static let maxHeldFrames = 4_800 + + /// An owned copy of a block, whose planes live as long as it does. + final class Copy { + private(set) var block: ObjectAudioDecodedBlock + private let storage: UnsafeMutablePointer + + init(_ source: ObjectAudioDecodedBlock) { + let frames = source.frameCount + storage = .allocate(capacity: max(1, source.planes.count * frames)) + block = source + block.planes = source.planes.enumerated().map { channel, plane in + let copy = storage + channel * frames + copy.update(from: plane, count: frames) + return UnsafePointer(copy) + } + } + + deinit { storage.deallocate() } + + fileprivate func prepend(_ update: ObjectAudioMetadataUpdate) { + block.updates.insert(update, at: 0) + } + } + + private var armed = true + private var generation: Int? + private var held: [Copy] = [] + private var heldFrames = 0 + private var released: [Copy] = [] + + /// Hold again from the next block: the decoder was reset. + func arm() { + armed = true + held = [] + heldFrames = 0 + released = [] + } + + /// Takes the decoder's next block. Returns it straight back when nothing is held or queued, and + /// nil when it was held or queued behind released blocks, which `nextReleased()` then hands out. + /// `firstStates` is every element's state as of the block's first metadata update, nil when the + /// block carries no metadata. + func admit(_ block: ObjectAudioDecodedBlock, firstStates: [ObjectAudioElementState?]?) -> ObjectAudioDecodedBlock? { + // A new configuration gets a new renderer, which starts without positions as well: what was + // held for the old one goes out as it is, and the hold starts again. + if let generation, generation != block.configurationGeneration { + releaseHeld() + armed = true + } + generation = block.configurationGeneration + guard armed else { + if released.isEmpty { return block } + released.append(Copy(block)) + return nil + } + let hasObjects = block.roles.contains(.object) + held.append(Copy(block)) + heldFrames += block.frameCount + if hasObjects, let firstStates { + held[0].prepend(ObjectAudioMetadataUpdate(frameOffset: 0, rampFrames: 0, states: firstStates)) + armed = false + releaseHeld() + } else if !hasObjects || heldFrames > Self.maxHeldFrames { + armed = false + releaseHeld() + } + return nil + } + + /// End of input or a segment cut: what is held goes out as it is, and nothing more is held until + /// the next reset. With nothing held it changes nothing, so a cut before the first audio after a + /// reset leaves the hold armed. + func releaseAll() { + guard !held.isEmpty else { return } + armed = false + releaseHeld() + } + + /// The next released block, in decode order. + func nextReleased() -> Copy? { + released.isEmpty ? nil : released.removeFirst() + } + + private func releaseHeld() { + released += held + held = [] + heldFrames = 0 + } +} diff --git a/Sources/AetherEngine/Audio/Spatial/PeakLimiter.swift b/Sources/AetherEngine/Audio/Spatial/PeakLimiter.swift new file mode 100644 index 000000000..392d67f99 --- /dev/null +++ b/Sources/AetherEngine/Audio/Spatial/PeakLimiter.swift @@ -0,0 +1,57 @@ +import Foundation + +/// Keeps the rendered bed under full scale before it reaches the APAC encoder (#731). +/// +/// The encoder does not clip: measured on macOS 27, a 1 kHz tone at amplitude 2.0 or 4.0 decodes +/// back at 2.000 / 4.001, so anything over 1.0 travels on and clips wherever the chain first meets +/// fixed point. A rendered Atmos bed can get there: OAMD gains reach +15 dB, and up to sixteen +/// elements sum into one speaker. +/// +/// One gain for all channels, so the limiter never moves an object. Attack is instant, which is +/// what keeps every sample under the threshold without a lookahead delay; a lookahead would shift +/// the audio against the video. Release is exponential, so the gain recovers without pumping. On a +/// bed that stays under the threshold the limiter does nothing at all. +struct PeakLimiter { + + /// −0.18 dBFS, a margin for the codec's own overshoot (+0.4 dB measured on an 8 kHz tone). + static let threshold: Float = 0.98 + static let releaseSeconds: Double = 0.25 + + private let releaseCoefficient: Float + /// The peak the current gain is holding down, decaying towards the threshold. + private var envelope: Float = 0 + /// Frames the limiter has reduced since the last `takeLimitedFrames`. + private var limitedFrames = 0 + /// Deepest reduction since the last `takeLimitedFrames`, as a linear gain. + private var deepestGain: Float = 1 + + init(sampleRate: Int) { + releaseCoefficient = Float(exp(-1 / (Self.releaseSeconds * Double(sampleRate)))) + } + + /// Limit `frameCount` frames of every plane in place. + mutating func process(_ planes: [UnsafeMutablePointer], frameCount: Int) { + guard !planes.isEmpty, frameCount > 0 else { return } + for i in 0.. Self.threshold else { continue } + let gain = Self.threshold / envelope + for plane in planes { plane[i] *= gain } + limitedFrames += 1 + deepestGain = min(deepestGain, gain) + } + } + + /// Forget the envelope (a seek or restart: the next audio has nothing to do with the last). + mutating func reset() { + envelope = 0 + } + + /// Frames reduced and the deepest reduction in dB since the last call, then starts counting again. + mutating func takeLimitedFrames() -> (frames: Int, deepestDB: Float) { + defer { limitedFrames = 0; deepestGain = 1 } + return (limitedFrames, 20 * log10(deepestGain)) + } +} diff --git a/Sources/AetherEngine/Audio/Spatial/SpatialAudioBridge.swift b/Sources/AetherEngine/Audio/Spatial/SpatialAudioBridge.swift index f31ccd758..1abccbf8a 100644 --- a/Sources/AetherEngine/Audio/Spatial/SpatialAudioBridge.swift +++ b/Sources/AetherEngine/Audio/Spatial/SpatialAudioBridge.swift @@ -2,12 +2,12 @@ import Foundation import AetherLibavcodec import AetherLibavutil -/// TrueHD Atmos in, APAC out: decodes the object presentation, renders its beds and objects into a -/// `SpatialSpeakerLayout` bed and encodes that as Apple Positional Audio, which tvOS delivers to an -/// Atmos receiver as Dolby MAT with the heights intact. +/// TrueHD Atmos or DTS:X in, APAC out: decodes the object presentation, renders its beds and objects +/// into a `SpatialSpeakerLayout` bed and encodes that as Apple Positional Audio, which tvOS delivers +/// to an Atmos receiver as Dolby MAT with the heights intact. /// -/// The FLAC bridge keeps TrueHD lossless but can only carry the 7.1 presentation, so every height -/// and every object position is gone before the audio leaves the engine. This bridge trades the +/// The FLAC bridge keeps TrueHD and DTS-HD lossless but can only carry the 7.1 presentation, so every +/// height and every object position is gone before the audio leaves the engine. This bridge trades the /// lossless bed for the Atmos mix: APAC is lossy, at a few Mbit/s, several times the rate streaming /// services deliver Atmos at. /// @@ -40,35 +40,43 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { let soundSampleEntryOverride: Data? /// HLS `CODECS` value for the track. let hlsCodecs: String + var servedChannelCount: Int? { layout.channelCount } private let srcTimeBase: AVRational private let decoder: ObjectAudioDecoding - private let encoder: APACEncoder + private let pipeline: APACEncodePipeline private var renderer: ObjectAudioRenderer? private var rendererGeneration = -1 /// What the encoder is fed, per bed channel, for the session log (see `BedLevelMeter`). private var levelMeter: BedLevelMeter + /// Keeps the bed under full scale, since the encoder carries anything over it on (see `PeakLimiter`). + private var limiter: PeakLimiter /// Rendered bed awaiting the encoder. TrueHD decodes one 40-frame access unit per block, 1200 /// a second; feeding the converter that often costs more in call overhead than the encode, so - /// blocks are rendered straight into this buffer and it is encoded `encodeChunkFrames` at a time. - private var outputPlanes: [UnsafeMutablePointer] = [] - private var outputCapacity = 0 + /// blocks are rendered straight into this buffer and it is handed to the encoder's queue + /// `encodeChunkFrames` at a time (see `APACEncodePipeline`). + private var output: APACEncodePipeline.PlaneBuffer private var pendingFrames = 0 private static let encodeChunkFrames = 2048 /// Timeline, in 48 kHz frames on the output time base. /// `originFrame`: the source PTS of the first packet pushed since the last reset. /// `encoderStartFrame`: where the first frame handed to the encoder since the reset sits. - /// `encoderFramesIn`: frames handed to the encoder since the reset; `packetsOut`: packets it - /// has returned. Packet k covers frames [k·1024 − leadingFrames, +1024) of encoder input and is - /// stamped `encoderStartFrame + k·1024`; see `emit`. + /// `encoderFramesIn`: frames handed to the encoder since the reset, so the next chunk sits at + /// `encoderStartFrame + encoderFramesIn`. The pipeline stamps the packets; see `wrap`. private var originFrame: Int64? private var encoderStartFrame: Int64? private var encoderFramesIn: Int64 = 0 - private var packetsOut: Int64 = 0 private var nextExpectedInputOffset: Int64? private var drainedAtEOF = false + /// The decoder reset itself after an internal failure: its offsets count from zero again, so the + /// next block re-anchors on the next packet's timestamp instead of being appended to the encoder. + private var decoderSelfResetsSeen = 0 + private var reanchorPending = false + /// Feeds in a row that threw, for a rate-limited log and the AE#641 report of a bridge that + /// keeps failing (a decoder that panics on every unit, a rate the renderer refuses). + private var consecutiveFeedFailures = 0 private let opLock = NSLock() private var stats = AudioBridge.FeedStats() @@ -89,7 +97,9 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { /// on Dolby's Unfold demo, that wait was up to 102 access units; at 64 every resume past the /// opening seconds was reported as a dead decoder and the session went to `.error` while it /// played, ignoring every seek after it. 1200 is a second of TrueHD, still a fraction of a second - /// of the producer's time. + /// of the producer's time. A DTS-HD packet is a 512-frame frame, so for DTS:X it is 12.8 s; the + /// track was confirmed as DTS:X before the bridge was built, and its decoder outputs from the + /// third packet after every reset. static let silentFeedPacketThreshold = 1200 init( @@ -102,8 +112,13 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { self.layout = layout self.decoder = decoder levelMeter = BedLevelMeter(layout: layout, sampleRate: Self.sampleRate) + limiter = PeakLimiter(sampleRate: Self.sampleRate) let rate = bitRate ?? layout.channelCount * Self.bitRatePerChannel - encoder = try APACEncoder(layout: layout, sampleRate: Double(Self.sampleRate), bitRate: rate) + let encoder = try APACEncoder(layout: layout, sampleRate: Double(Self.sampleRate), bitRate: rate) + let pipeline = APACEncodePipeline( + encoder: encoder, channels: layout.channelCount, bufferFrames: Self.encodeChunkFrames * 4) + self.pipeline = pipeline + output = pipeline.takeInitialBuffer() soundSampleEntryOverride = APACSampleEntry.sampleEntry( magicCookie: encoder.magicCookie, sampleRate: Self.sampleRate) hlsCodecs = APACSampleEntry.codecsString(channelCount: layout.channelCount) @@ -162,51 +177,109 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { // Every exit: a decoder that rejects each packet has decoded nothing too. defer { noteDecodedNothingIfNeeded() } - if originFrame == nil, packet.pointee.pts != Self.avNoPTS { - originFrame = av_rescale_q(packet.pointee.pts, srcTimeBase, encoderTimeBase) - } guard let data = packet.pointee.data, packet.pointee.size > 0 else { return [] } do { try decoder.push(UnsafeRawBufferPointer(start: data, count: Int(packet.pointee.size))) } catch { stats.packetsRejected += 1 - return [] + noteDecoderSelfReset() + noteFeedFailure(error) + var results: [UnsafeMutablePointer] = [] + // This feed has already counted as failed. + collectEncoded(into: &results, noteFailure: false) + return results + } + // The anchor is the first packet the decoder actually took, so its input offsets count from + // this packet. dts covers a packet whose pts the demuxer left unset. + if originFrame == nil { + let ts = packet.pointee.pts != Self.avNoPTS ? packet.pointee.pts : packet.pointee.dts + if ts != Self.avNoPTS { originFrame = av_rescale_q(ts, srcTimeBase, encoderTimeBase) } } + // Packets already stamped stay in the result when a later block of the same packet fails: + // their timestamps are right, and dropping them would leave a hole the source never had. var results: [UnsafeMutablePointer] = [] do { while let block = try decoder.nextBlock() { stats.framesDecoded += 1 try renderAndEncode(block, into: &results) } + consecutiveFeedFailures = 0 } catch { stats.decodeErrors += 1 - for p in results { var pp: UnsafeMutablePointer? = p; trackedPacketFree(&pp) } - throw error + noteDecoderSelfReset() + noteFeedFailure(error) } + collectEncoded(into: &results) return results } + /// Caller holds `opLock`. After the decoder reset itself, the bytes of the failing packet are gone + /// and its offsets restart at zero: anchor again on the next packet it takes. + private func noteDecoderSelfReset() { + guard decoder.selfResetCount != decoderSelfResetsSeen else { return } + decoderSelfResetsSeen = decoder.selfResetCount + originFrame = nil + nextExpectedInputOffset = nil + reanchorPending = encoderStartFrame != nil + } + + /// Caller holds `opLock`. The first failure and every `silentFeedPacketThreshold`th after it are + /// logged; a run that long is reported once as a bridge that produces nothing. + private func noteFeedFailure(_ error: Error) { + consecutiveFeedFailures += 1 + if consecutiveFeedFailures == 1 || consecutiveFeedFailures % Self.silentFeedPacketThreshold == 0 { + EngineLog.emit( + "[SpatialAudioBridge] feed failed (\(consecutiveFeedFailures) in a row): \(error)", + category: .session) + } + guard !decodedNothingReported, + consecutiveFeedFailures >= Self.silentFeedPacketThreshold else { return } + // One latch with the decoded-nothing report: a decoder that refuses every packet is both. + decodedNothingReported = true + EngineLog.emit( + "[SpatialAudioBridge] ERROR: AE#641 every feed has failed for \(consecutiveFeedFailures) packets: " + + "\(stats.summary)", category: .session) + onDecoderProducedNothing?(stats) + } + /// Caller holds `opLock`. private func noteDecodedNothingIfNeeded() { guard !decodedNothingReported, stats.decodedNothing, stats.packetsFedSinceLastEnqueue >= Self.silentFeedPacketThreshold else { return } decodedNothingReported = true EngineLog.emit( - "[SpatialAudioBridge] ERROR: AE#641 the TrueHD object decoder has produced nothing: " + "[SpatialAudioBridge] ERROR: AE#641 the object decoder has produced nothing: " + "\(stats.summary)", category: .session) onDecoderProducedNothing?(stats) } + func settle() -> [UnsafeMutablePointer] { + opLock.lock() + defer { opLock.unlock() } + var results: [UnsafeMutablePointer] = [] + // Audio the decoder holds for metadata sits before the cut; released here, the cut sees what + // it saw before the hold existed, rather than up to 100 ms of it landing in the next segment. + renderHeldBlocks(into: &results) + let settled = pipeline.settle() + wrap(settled.packets, into: &results) + noteEncodeErrors(settled.errors) + return results + } + func flush() -> [UnsafeMutablePointer] { opLock.lock() defer { opLock.unlock() } guard !drainedAtEOF else { return [] } drainedAtEOF = true var results: [UnsafeMutablePointer] = [] - try? encodePending(into: &results) + // Audio the decoder held back for metadata that never came plays as it is. + renderHeldBlocks(into: &results) + encodePending() logLevels(levelMeter.restart()) - if let packets = try? encoder.flush() { emit(packets, into: &results) } + let finished = pipeline.finish() + wrap(finished.packets, into: &results) + noteEncodeErrors(finished.errors) if !results.isEmpty { EngineLog.emit("[SpatialAudioBridge] EOF flush emitted \(results.count) tail packet(s)", category: .session) } @@ -218,22 +291,27 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { defer { opLock.unlock() } decoder.reset() renderer?.reset() - encoder.reset() + pipeline.reset() + limiter.reset() logLevels(levelMeter.restart()) pendingFrames = 0 originFrame = nil encoderStartFrame = nil encoderFramesIn = 0 - packetsOut = 0 nextExpectedInputOffset = nil drainedAtEOF = false + decoderSelfResetsSeen = decoder.selfResetCount + reanchorPending = false + consecutiveFeedFailures = 0 } func noteTimelineJump(deltaSeconds: Double) { opLock.lock() defer { opLock.unlock() } guard deltaSeconds > 0, let start = encoderStartFrame else { return } - encoderStartFrame = start + Int64((deltaSeconds * Double(Self.sampleRate)).rounded()) + let frames = Int64((deltaSeconds * Double(Self.sampleRate)).rounded()) + encoderStartFrame = start + frames + pipeline.shift(by: frames) } func close() { @@ -241,18 +319,29 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { defer { opLock.unlock() } // A viewer who hears no heights stops playback: the window they stopped in is the one to log. logLevels(levelMeter.restart()) + pipeline.close() cleanup() } private func cleanup() { if encoderCodecpar != nil { avcodec_parameters_free(&encoderCodecpar) } - outputPlanes.forEach { $0.deallocate() } - outputPlanes = [] - outputCapacity = 0 } // MARK: - Pipeline + /// Caller holds `opLock`. + private func renderHeldBlocks(into results: inout [UnsafeMutablePointer]) { + decoder.releaseHeldBlocks() + do { + while let block = try decoder.nextBlock() { + stats.framesDecoded += 1 + try renderAndEncode(block, into: &results) + } + } catch { + EngineLog.emit("[SpatialAudioBridge] drain of held blocks failed: \(error)", category: .session) + } + } + private func renderAndEncode(_ block: ObjectAudioDecodedBlock, into results: inout [UnsafeMutablePointer]) throws { guard block.sampleRate == Self.sampleRate else { throw BridgeError.unsupportedSampleRate(block.sampleRate) } guard block.frameCount > 0 else { return } @@ -278,65 +367,111 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { // filled with silence so everything after it stays on its timestamp. if encoderStartFrame == nil { encoderStartFrame = (originFrame ?? 0) + block.inputFrameOffset - } else if let expected = nextExpectedInputOffset, block.inputFrameOffset > expected { - let gap = Int(min(block.inputFrameOffset - expected, Int64(Self.sampleRate * 5))) - try encodeSilence(frames: gap, into: &results) + } else if reanchorPending, let start = encoderStartFrame { + // After the decoder's own reset: put this block where the source says it plays. + reanchorPending = false + let target = (originFrame ?? start + encoderFramesIn + Int64(pendingFrames)) + block.inputFrameOffset + place(at: target) + } else if let expected = nextExpectedInputOffset, block.inputFrameOffset > expected, + let start = encoderStartFrame { + let end = start + encoderFramesIn + Int64(pendingFrames) + place(at: end + (block.inputFrameOffset - expected)) } nextExpectedInputOffset = block.inputFrameOffset + Int64(block.frameCount) - ensureOutputCapacity(pendingFrames + block.frameCount) + output.ensureCapacity(pendingFrames + block.frameCount, keeping: pendingFrames) renderer!.render( inputs: block.planes, frameCount: block.frameCount, updates: block.updates, - outputs: outputPlanes.map { $0 + pendingFrames }) + outputs: output.planes.map { $0 + pendingFrames }) pendingFrames += block.frameCount stats.samplesEnqueued += Int64(block.frameCount) stats.packetsFedSinceLastEnqueue = 0 - if pendingFrames >= Self.encodeChunkFrames { try encodePending(into: &results) } + if pendingFrames >= Self.encodeChunkFrames { encodePending() } } - private func encodeSilence(frames: Int, into results: inout [UnsafeMutablePointer]) throws { - guard frames > 0 else { return } - ensureOutputCapacity(pendingFrames + frames) - for plane in outputPlanes { (plane + pendingFrames).update(repeating: 0, count: frames) } - pendingFrames += frames - if pendingFrames >= Self.encodeChunkFrames { try encodePending(into: &results) } + /// Continue the encoder's input at `target` (a source position in 48 kHz frames): a short gap + /// ahead is filled with silence, anything longer or behind restarts the encoder there, so every + /// later packet keeps its source position. + private func place(at target: Int64) { + guard let start = encoderStartFrame else { return } + let end = start + encoderFramesIn + Int64(pendingFrames) + let gap = target - end + if gap == 0 { return } + if gap > 0, gap <= Int64(Self.maxSilenceFillFrames) { + encodeSilence(frames: Int(gap)) + return + } + encodePending() + pipeline.restart() + limiter.reset() + encoderStartFrame = target + encoderFramesIn = 0 + EngineLog.emit( + "[SpatialAudioBridge] encoder re-anchored \(String(format: "%+.3f", Double(gap) / Double(Self.sampleRate))) s " + + "off its running position", category: .session) + } + + /// The longest gap filled with silence rather than by restarting the encoder. + private static let maxSilenceFillFrames = sampleRate * 5 + + /// In chunks, like rendered audio: a 5 s fill handed over in one piece would hold the encoder + /// for its whole length and grow every pooled buffer to it. + private func encodeSilence(frames: Int) { + var remaining = frames + while remaining > 0 { + let n = min(remaining, max(Self.encodeChunkFrames - pendingFrames, 0)) + if n == 0 { encodePending(); continue } + output.ensureCapacity(pendingFrames + n, keeping: pendingFrames) + for plane in output.planes { (plane + pendingFrames).update(repeating: 0, count: n) } + pendingFrames += n + remaining -= n + if pendingFrames >= Self.encodeChunkFrames { encodePending() } + } } - private func encodePending(into results: inout [UnsafeMutablePointer]) throws { + /// Hand the rendered frames to the encoder's queue. Its packets come back through + /// `collectEncoded` on a later call. + private func encodePending() { guard pendingFrames > 0 else { return } let frames = pendingFrames pendingFrames = 0 - let planes = outputPlanes.map { UnsafePointer($0) } + guard let start = encoderStartFrame else { return } + limiter.process(output.planes, frameCount: frames) + let position = start + encoderFramesIn // Where this chunk plays, for the level line: the anchor is a source PTS in 48 kHz frames. - let chunkStart = encoderStartFrame.map { Double($0 + encoderFramesIn) / Double(Self.sampleRate) } - let packets: [APACEncoder.Packet] - do { - packets = try encoder.encode(planes: planes, frameCount: frames) - } catch { - // Packet timestamps count packets since the encoder started, so a failed call that - // swallowed packets would leave every later one stamped early. Start the encoder over - // past this chunk instead: the chunk becomes a gap and everything after it keeps its - // source position. - if let start = encoderStartFrame { - encoderStartFrame = start + encoderFramesIn + Int64(frames) - } - encoder.reset() - encoderFramesIn = 0 - packetsOut = 0 - stats.encodeErrors += 1 - throw error - } + logLevels(levelMeter.add(output.planes.map { UnsafePointer($0) }, frameCount: frames, + startSeconds: Double(position) / Double(Self.sampleRate))) + output = pipeline.submit(output, frames: frames, position: position) encoderFramesIn += Int64(frames) - logLevels(levelMeter.add(planes, frameCount: frames, startSeconds: chunkStart)) - emit(packets, into: &results) } + /// Caller holds `opLock`. Everything the encoder has finished since the last call. + private func collectEncoded(into results: inout [UnsafeMutablePointer], noteFailure: Bool = true) { + let encoded = pipeline.collect() + wrap(encoded.packets, into: &results) + noteEncodeErrors(encoded.errors, noteFailure: noteFailure) + } + + /// Caller holds `opLock`. A failed chunk is a gap the pipeline already stepped over; it counts + /// as a failed feed for the log. + private func noteEncodeErrors(_ errors: [Error], noteFailure: Bool = true) { + guard let first = errors.first else { return } + stats.encodeErrors += errors.count + if noteFailure { noteFeedFailure(first) } + } + + /// The level line, with the limiter's work over the same window when it had any. private func logLevels(_ line: String?) { - if let line { EngineLog.emit("[SpatialAudioBridge] \(line)", category: .session) } + guard let line else { return } + let limited = limiter.takeLimitedFrames() + let limiterNote = limited.frames > 0 + ? String(format: "; limiter reduced %d frames, deepest %.1f dB", limited.frames, limited.deepestDB) + : "" + EngineLog.emit("[SpatialAudioBridge] \(line)\(limiterNote)", category: .session) } - /// Stamp encoder packets onto the output timeline and wrap them for the muxer. Packet k is - /// stamped `encoderStartFrame + k·1024`, the encoder's priming packets included, because + /// Wrap stamped encoder packets for the muxer. The pipeline stamps packet k of an encoder run + /// at the run's first position plus k·1024, the encoder's priming packets included, because /// AVFoundation presents an APAC packet's audio `leadingFrames` (2048) before its timestamp: it /// counts the priming as part of the stream, the way AVAssetWriter writes it. So the priming /// packets take the anchor's timestamp, their output falls before it and is never heard, and the @@ -344,12 +479,9 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { /// content packet on the anchor played every session 2048 frames (42.7 ms) ahead of the video, /// at load and after every seek (AVPlayer over HLS on macOS 27, with 5.1 APAC since macOS rejects /// 7.1.4, against an ALAC reference; AVAssetReader shows the same 2048 frames for 7.1.4). - private func emit(_ packets: [APACEncoder.Packet], into results: inout [UnsafeMutablePointer]) { + private func wrap(_ packets: [APACEncodePipeline.StampedPacket], into results: inout [UnsafeMutablePointer]) { let frames = Int64(APACEncoder.framesPerPacket) for packet in packets { - let k = packetsOut - packetsOut += 1 - guard let start = encoderStartFrame else { continue } guard let avpkt = trackedPacketAlloc() else { continue } guard av_new_packet(avpkt, Int32(packet.data.count)) >= 0 else { var p: UnsafeMutablePointer? = avpkt @@ -359,9 +491,8 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { packet.data.withUnsafeBytes { raw in avpkt.pointee.data.update(from: raw.bindMemory(to: UInt8.self).baseAddress!, count: packet.data.count) } - let pts = start + k * frames - avpkt.pointee.pts = pts - avpkt.pointee.dts = pts + avpkt.pointee.pts = packet.pts + avpkt.pointee.dts = packet.pts avpkt.pointee.duration = frames if packet.isSync { avpkt.pointee.flags |= AV_PKT_FLAG_KEY } outputBytesLifetime += Int64(packet.data.count) @@ -369,17 +500,4 @@ final class SpatialAudioBridge: AudioTranscodingBridge, @unchecked Sendable { results.append(avpkt) } } - - /// Grow the planes to hold `frames`, keeping the `pendingFrames` already rendered into them. - private func ensureOutputCapacity(_ frames: Int) { - guard frames > outputCapacity || outputPlanes.count != layout.channelCount else { return } - let capacity = max(frames, Self.encodeChunkFrames * 4) - let grown = (0...allocate(capacity: capacity) } - if outputPlanes.count == grown.count { - for c in grown.indices { grown[c].update(from: outputPlanes[c], count: pendingFrames) } - } - outputPlanes.forEach { $0.deallocate() } - outputPlanes = grown - outputCapacity = capacity - } } diff --git a/Sources/AetherEngine/Audio/Spatial/SpatialSpeakerLayout.swift b/Sources/AetherEngine/Audio/Spatial/SpatialSpeakerLayout.swift index dc81c81d0..b2004ab78 100644 --- a/Sources/AetherEngine/Audio/Spatial/SpatialSpeakerLayout.swift +++ b/Sources/AetherEngine/Audio/Spatial/SpatialSpeakerLayout.swift @@ -59,9 +59,18 @@ public enum SpatialSpeakerLayout: String, Sendable, CaseIterable, Codable { /// listener. That is the model Atmos object metadata is authored in, so an object on the left wall /// halfway back lands between the left-side speakers whatever the physical angles are. /// `x` runs left (0) to right (1), `y` front (0) to back (1), `z` floor/ear level (0) to ceiling (1). +/// +/// Ceiling speakers sit at the panner targets ETSI TS 103 448 gives them (table A.5): a quarter of +/// the room in from each wall, not in its corners. An object on the ceiling between them is panned +/// between them, and one beyond them, out at a wall or a corner, plays from the nearest. With the +/// tops in the corners, an object a third of the way back put 25% of its power in the rear tops +/// instead of 7%, so overhead content measured up to 4 points of energy higher and 3° higher +/// against Apple's own Atmos render. public enum SpatialSpeaker: String, Sendable, CaseIterable { case left, right, center, lfe - /// 5.1-style surrounds, which a 5.1 bed places in the rear corners. + /// 5.1-style surrounds. TS 103 448 table A.3 puts them halfway down the side walls, where a + /// 7.1 bed has its sides, not in the rear corners: an object on the side wall plays from them + /// alone, and one at the back wall stays on them rather than reaching past them. case surroundLeft, surroundRight case sideLeft, sideRight case rearLeft, rearRight @@ -77,20 +86,20 @@ public enum SpatialSpeaker: String, Sendable, CaseIterable { case .right: return SIMD3(1, 0, 0) case .center: return SIMD3(0.5, 0, 0) case .lfe: return SIMD3(0.5, 0, 0) - case .surroundLeft: return SIMD3(0, 1, 0) - case .surroundRight: return SIMD3(1, 1, 0) + case .surroundLeft: return SIMD3(0, 0.5, 0) + case .surroundRight: return SIMD3(1, 0.5, 0) case .sideLeft: return SIMD3(0, 0.5, 0) case .sideRight: return SIMD3(1, 0.5, 0) case .rearLeft: return SIMD3(0, 1, 0) case .rearRight: return SIMD3(1, 1, 0) case .wideLeft: return SIMD3(0, 0.25, 0) case .wideRight: return SIMD3(1, 0.25, 0) - case .topFrontLeft: return SIMD3(0, 0, 1) - case .topFrontRight: return SIMD3(1, 0, 1) - case .topMiddleLeft: return SIMD3(0, 0.5, 1) - case .topMiddleRight: return SIMD3(1, 0.5, 1) - case .topRearLeft: return SIMD3(0, 1, 1) - case .topRearRight: return SIMD3(1, 1, 1) + case .topFrontLeft: return SIMD3(0.25, 0.25, 1) + case .topFrontRight: return SIMD3(0.75, 0.25, 1) + case .topMiddleLeft: return SIMD3(0.25, 0.5, 1) + case .topMiddleRight: return SIMD3(0.75, 0.5, 1) + case .topRearLeft: return SIMD3(0.25, 0.75, 1) + case .topRearRight: return SIMD3(0.75, 0.75, 1) } } diff --git a/Sources/AetherEngine/Audio/Spatial/TrueHDObjectAudioDecoder.swift b/Sources/AetherEngine/Audio/Spatial/TrueHDObjectAudioDecoder.swift index 461d9d13e..b6dfdfb5c 100644 --- a/Sources/AetherEngine/Audio/Spatial/TrueHDObjectAudioDecoder.swift +++ b/Sources/AetherEngine/Audio/Spatial/TrueHDObjectAudioDecoder.swift @@ -21,6 +21,11 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { private var roles: [ObjectAudioRole] = [] private var rolesSerial: UInt32? private var planes: [UnsafePointer] = [] + private(set) var selfResetCount = 0 + /// Blocks between a reset and the first metadata, so objects play from the first frame (see + /// `ObjectMetadataHold`), and the released block last handed out, whose planes it owns. + private let hold = ObjectMetadataHold() + private var lent: ObjectMetadataHold.Copy? init() throws { guard let handle = truehd_atmos_decoder_create(TRUEHD_ATMOS_PRESENTATION_HIGHEST) else { @@ -35,13 +40,42 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { guard let base = bytes.baseAddress, bytes.count > 0 else { return } let status = truehd_atmos_decoder_push( handle, base.assumingMemoryBound(to: UInt8.self), bytes.count, Int64.min) + // BUFFER_FULL (8 MiB waiting) cannot happen behind the bridge, which drains every block after + // each push; a panic resets for the same reason as in `nextBlock`. + if status == TRUEHD_ATMOS_ERR_PANIC { + let failure = error(status) + reset() + selfResetCount += 1 + throw failure + } guard status == TRUEHD_ATMOS_OK else { throw error(status) } } func nextBlock() throws -> ObjectAudioDecodedBlock? { + lent = nil + while true { + if let released = hold.nextReleased() { + lent = released + return released.block + } + guard let (block, firstStates) = try pull() else { return nil } + if let block = hold.admit(block, firstStates: firstStates) { return block } + } + } + + /// The library's next block, with every element's state as of its first metadata update. + private func pull() throws -> (ObjectAudioDecodedBlock, [ObjectAudioElementState?]?)? { var block = TrueHDAtmosBlock() let status = truehd_atmos_decoder_pull(handle, &block) if status == TRUEHD_ATMOS_NEED_MORE_DATA { return nil } + if status == TRUEHD_ATMOS_ERR_PANIC { + // The handle refuses every call until it is reset. Reset it here, so the stream resumes + // at the next major sync instead of staying silent for the rest of the session. + let failure = error(status) + reset() + selfResetCount += 1 + throw failure + } guard status == TRUEHD_ATMOS_OK else { throw error(status) } let channels = Int(block.channel_count) @@ -53,11 +87,13 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { for c in 0.. DecoderError { @@ -92,9 +134,10 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { // MARK: - Mapping - /// Bed speakers the renderer's room model names route discretely; the rest (screen, centre - /// back and top centre channels, which home Atmos beds do not use) are positioned by their - /// metadata like objects. + /// Bed speakers the renderer's room model names route discretely; the other speaker codes + /// (screen, centre back, top centre, surround direct) sit at their nominal position, so a + /// channel-based presentation without metadata still plays them. Objects and unlabelled + /// channels are positioned by metadata. static func role(forSpeaker code: UInt8) -> ObjectAudioRole { switch code { case TRUEHD_ATMOS_SPEAKER_LFE, TRUEHD_ATMOS_SPEAKER_LFE2: return .lfe @@ -113,6 +156,13 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { case TRUEHD_ATMOS_SPEAKER_TSR: return .bed(.topMiddleRight) case TRUEHD_ATMOS_SPEAKER_TBL: return .bed(.topRearLeft) case TRUEHD_ATMOS_SPEAKER_TBR: return .bed(.topRearRight) + case TRUEHD_ATMOS_SPEAKER_LSC: return .fixed(SIMD3(0.25, 0, 0)) + case TRUEHD_ATMOS_SPEAKER_RSC: return .fixed(SIMD3(0.75, 0, 0)) + case TRUEHD_ATMOS_SPEAKER_CB: return .fixed(SIMD3(0.5, 1, 0)) + case TRUEHD_ATMOS_SPEAKER_LSD: return .fixed(SpatialSpeaker.sideLeft.position) + case TRUEHD_ATMOS_SPEAKER_RSD: return .fixed(SpatialSpeaker.sideRight.position) + case TRUEHD_ATMOS_SPEAKER_TC: return .fixed(SIMD3(0.5, 0.5, 1)) + case TRUEHD_ATMOS_SPEAKER_TFC: return .fixed(SIMD3(0.5, 0.25, 1)) default: return .object } } @@ -128,15 +178,15 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { p = (0.5, 0.5, 0.5) size = 1 } else if element.flags & TRUEHD_ATMOS_ELEMENT_SCREEN_REF != 0 { - // Screen-anchored: x across the screen, z −1…1 over the screen's height, both on the - // front wall. A home room has no screen geometry to map that onto exactly; keep the - // object on the front wall and put the top of the screen halfway up the room rather - // than at the ceiling. - p = (p.0, 0, max(0, p.2) * 0.5) + // Screen-anchored: x across the screen and z −1…1 over its height, while y stays room + // depth (header, COORDINATES). A home room has no screen geometry to map that onto + // exactly, so the screen spans the front wall's width and its top sits halfway up the + // room rather than at the ceiling. + p = (p.0, p.1, max(0, p.2) * 0.5) } var excluded = excludedSpeakers(zone: element.zone) if element.kind == TRUEHD_ATMOS_ELEMENT_OBJECT, element.flags & TRUEHD_ATMOS_ELEMENT_ELEVATION == 0 { - excluded.formUnion(SpatialSpeaker.allCases.filter(\.isHeight)) + excluded.formUnion(heights) } return ObjectAudioElementState( position: SIMD3(p.0, p.1, max(0, p.2)), @@ -146,17 +196,25 @@ final class TrueHDObjectAudioDecoder: ObjectAudioDecoding { excluded: excluded) } + /// Built once: they run per changed element on every metadata update. + private static let heights = Set(SpatialSpeaker.allCases.filter(\.isHeight)) + /// A 5.1 layout's surrounds are in neither zone: TS 103 448 table 4 excludes nothing for those + /// two masks on a 3/2 floor, and only screen-only takes the surrounds away. + private static let noBack: Set = [.rearLeft, .rearRight] + private static let noSides: Set = [.sideLeft, .sideRight, .wideLeft, .wideRight] + private static let screenOnly = noSides.union(noBack).union([.surroundLeft, .surroundRight]) + private static let surroundOnly: Set = [.left, .right, .center, .wideLeft, .wideRight] + /// Centre and back zones only: off the front pair, the wides and the sides. + private static let centerBack: Set = [.left, .right, .wideLeft, .wideRight, .sideLeft, .sideRight] + /// OAMD horizontal zone constraints (TS 103 420 table 20) as speakers the object may not use. - /// "Centre back" has no clean equivalent in a home bed and is left unconstrained. static func excludedSpeakers(zone: UInt8) -> Set { - let front: Set = [.left, .right, .center, .wideLeft, .wideRight] - let sides: Set = [.sideLeft, .sideRight, .wideLeft, .wideRight] - let back: Set = [.rearLeft, .rearRight, .surroundLeft, .surroundRight] switch zone { - case TRUEHD_ATMOS_ZONE_NO_BACK: return back - case TRUEHD_ATMOS_ZONE_NO_SIDES: return sides - case TRUEHD_ATMOS_ZONE_SCREEN_ONLY: return sides.union(back) - case TRUEHD_ATMOS_ZONE_SURROUND_ONLY: return front + case TRUEHD_ATMOS_ZONE_NO_BACK: return noBack + case TRUEHD_ATMOS_ZONE_NO_SIDES: return noSides + case TRUEHD_ATMOS_ZONE_CENTER_BACK: return centerBack + case TRUEHD_ATMOS_ZONE_SCREEN_ONLY: return screenOnly + case TRUEHD_ATMOS_ZONE_SURROUND_ONLY: return surroundOnly default: return [] } } diff --git a/Sources/AetherEngine/Audio/Tap/AudioTapHLSReader.swift b/Sources/AetherEngine/Audio/Tap/AudioTapHLSReader.swift index a2bc1c78e..91647acf5 100644 --- a/Sources/AetherEngine/Audio/Tap/AudioTapHLSReader.swift +++ b/Sources/AetherEngine/Audio/Tap/AudioTapHLSReader.swift @@ -37,7 +37,7 @@ final class AudioTapHLSReader: @unchecked Sendable { init(deps: Dependencies) { self.deps = deps } func start() { - task = Task.detached(priority: .utility) { [self] in await run() } + task = BlockingWork.detached(priority: .utility) { [self] in await run() } } func stop() { diff --git a/Sources/AetherEngine/BlockingWork.swift b/Sources/AetherEngine/BlockingWork.swift new file mode 100644 index 000000000..7f092e470 --- /dev/null +++ b/Sources/AetherEngine/BlockingWork.swift @@ -0,0 +1,64 @@ +import Foundation + +/// Where engine work that blocks its thread runs: a demuxer open, a packet read, a FIFO write +/// under backpressure, a `close()` that joins a pump, a `waitForFinish`. +/// +/// `Task.detached` is no background thread. It runs on the Swift cooperative pool, which has one +/// thread per core and never grows, so every blocked job takes a core's worth of async work out +/// of the whole process, the host app's included. On a 3-core CI runner the test suite parked +/// all three for half a minute at a time (a 120 s time limit fired at 151 s, because the +/// watchdog is a task on the same pool), and an Apple TV has few more cores than that. +/// +/// A task created here prefers `BlockingExecutor`, which runs its jobs on GCD's global queues. +/// Those add a thread when one blocks in the kernel, which is the whole difference. The task is +/// otherwise an ordinary one: it awaits, hops to the main actor and back, and is cancelled like +/// any other. +enum BlockingWork { + @discardableResult + static func detached( + priority: TaskPriority? = nil, + operation: sending @escaping @isolated(any) () async -> Success + ) -> Task { + if #available(visionOS 2, *) { + return Task.detached(executorPreference: BlockingExecutor.shared, priority: priority, operation: operation) + } + return Task.detached(priority: priority, operation: operation) + } + + @discardableResult + static func detached( + priority: TaskPriority? = nil, + operation: sending @escaping @isolated(any) () async throws -> Success + ) -> Task { + if #available(visionOS 2, *) { + return Task.detached(executorPreference: BlockingExecutor.shared, priority: priority, operation: operation) + } + return Task.detached(priority: priority, operation: operation) + } +} + +/// Runs each job on the GCD global queue that matches its priority. Stateless and shared, so a +/// task's preference never outlives what it points at. +@available(visionOS 2, *) +final class BlockingExecutor: TaskExecutor { + static let shared = BlockingExecutor() + + func enqueue(_ job: consuming ExecutorJob) { + let qos = Self.qos(for: job.priority) + let job = UnownedJob(job) + let executor = asUnownedTaskExecutor() + DispatchQueue.global(qos: qos).async { + job.runSynchronously(on: executor) + } + } + + static func qos(for priority: JobPriority) -> DispatchQoS.QoSClass { + switch TaskPriority(rawValue: priority.rawValue) { + case .high: return .userInitiated + case .medium: return .default + case .low: return .utility + case .background: return .background + default: return priority.rawValue > TaskPriority.high.rawValue ? .userInteractive : .default + } + } +} diff --git a/Sources/AetherEngine/Decoder/DeinterlaceHardwareWarmup.swift b/Sources/AetherEngine/Decoder/DeinterlaceHardwareWarmup.swift index 9adc08f2a..cc6931fa3 100644 --- a/Sources/AetherEngine/Decoder/DeinterlaceHardwareWarmup.swift +++ b/Sources/AetherEngine/Decoder/DeinterlaceHardwareWarmup.swift @@ -16,7 +16,7 @@ final class DeinterlaceHardwareWarmup: @unchecked Sendable { private let task: Task init(operation: @escaping Operation) { - task = Task.detached(priority: .userInitiated) { + task = BlockingWork.detached(priority: .userInitiated) { let started = DispatchTime.now() EngineLog.emit( "[Deinterlace] hardware warm-up started", diff --git a/Sources/AetherEngine/Decoder/HardwareVideoDecoder.swift b/Sources/AetherEngine/Decoder/HardwareVideoDecoder.swift index 1893ca627..125480982 100644 --- a/Sources/AetherEngine/Decoder/HardwareVideoDecoder.swift +++ b/Sources/AetherEngine/Decoder/HardwareVideoDecoder.swift @@ -85,6 +85,25 @@ final class HardwareVideoDecoder: VideoDecodingPipeline, @unchecked Sendable { lock.lock(); defer { lock.unlock() }; return _feedEpoch } + /// AE#739: the system invalidates the session behind our back (iOS screen lock, media services + /// reset), after which every `VTDecompressionSessionDecodeFrame` returns `kVTInvalidSessionErr`. + /// Fired once per lost session, on the decode thread. The owner decides when to `rebuildSession()`, + /// because only it knows whether the app is in the foreground and where the playhead is. + var onSessionLost: (@Sendable () -> Void)? { + get { skipLock.lock(); defer { skipLock.unlock() }; return _onSessionLost } + set { skipLock.lock(); _onSessionLost = newValue; skipLock.unlock() } + } + private var _onSessionLost: (@Sendable () -> Void)? + + /// AE#739, all guarded by `lock`. `sessionLost` drops every packet instead of feeding a dead + /// session; `awaitingKeyframe` drops packets after a rebuild until one the new session can start + /// from. + private var sessionLost = false + private var awaitingKeyframe = false + private var droppedAwaitingKeyframe = 0 + private var decoderSpecification: NSDictionary? + private var pixelBufferAttributes: NSDictionary? + /// Heap-allocated box carrying a weak self reference for the C decompression callback's refCon. /// Separate object so we can pass UnsafeMutablePointer to VT without unsafe bit-casts. /// `fileprivate` so the file-level C callback can access the type. @@ -183,54 +202,106 @@ final class HardwareVideoDecoder: VideoDecodingPipeline, @unchecked Sendable { kCVPixelBufferMetalCompatibilityKey: true, ] + decoderSpecification = decoderSpec + pixelBufferAttributes = pixelBufferAttrs + // 4. Output callback: C function dispatches into handleDecodedFrame via refCon. let box = RefConBox(self) let unmanaged = Unmanaged.passRetained(box) refConBox = unmanaged + let created = makeSession(formatDescription: formatDesc, refCon: unmanaged) + guard let createdSession = created.session else { + unmanaged.release() + refConBox = nil + throw VideoDecoderError.sessionCreationFailed(status: created.status) + } + session = createdSession + + EngineLog.emit( + "[HardwareVideoDecoder] opened HEVC \(width)x\(height) " + + "\(use10Bit ? "10-bit" : "8-bit") " + + "transfer=\(codecpar.pointee.color_trc.rawValue)", + category: .swPlayback + ) + } + + /// The one place a session is created, so `open()` and `rebuildSession()` cannot drift apart. + private func makeSession( + formatDescription: CMVideoFormatDescription, refCon: Unmanaged + ) -> (session: VTDecompressionSession?, status: OSStatus) { var callback = VTDecompressionOutputCallbackRecord( decompressionOutputCallback: hwDecoderOutputCallback, - decompressionOutputRefCon: unmanaged.toOpaque() + decompressionOutputRefCon: refCon.toOpaque() ) - var sessionOut: VTDecompressionSession? let status = VTDecompressionSessionCreate( allocator: kCFAllocatorDefault, - formatDescription: formatDesc, - decoderSpecification: decoderSpec, - imageBufferAttributes: pixelBufferAttrs, + formatDescription: formatDescription, + decoderSpecification: decoderSpecification, + imageBufferAttributes: pixelBufferAttributes, outputCallback: &callback, decompressionSessionOut: &sessionOut ) - guard status == noErr, let createdSession = sessionOut else { - unmanaged.release() - refConBox = nil - throw VideoDecoderError.sessionCreationFailed(status: status) - } - session = createdSession - - // 5. Pass through per-frame HDR metadata for correct tone mapping; unknown-key set returns -12911 on older OSes (swallowed). + guard status == noErr, let created = sessionOut else { return (nil, status) } + // Pass through per-frame HDR metadata for correct tone mapping; unknown-key set returns -12911 on older OSes (swallowed). VTSessionSetProperty( - createdSession, + created, key: kVTDecompressionPropertyKey_PropagatePerFrameHDRDisplayMetadata, value: kCFBooleanTrue ) + return (created, noErr) + } - EngineLog.emit( - "[HardwareVideoDecoder] opened HEVC \(width)x\(height) " - + "\(use10Bit ? "10-bit" : "8-bit") " - + "transfer=\(codecpar.pointee.color_trc.rawValue)", - category: .swPlayback - ) + /// AE#739: replace the session with a fresh one built from the same format description and + /// attributes, keeping the refCon box so every callback and setting carries over. Bumps the feed + /// epoch and drops packets until the next keyframe, which is the first one a new session can + /// decode. Returns false when VT refuses (the app is still in the background, typically); the + /// decoder then stays lost and drops every packet until a later call succeeds. + @discardableResult + func rebuildSession() -> Bool { + lock.lock() + defer { lock.unlock() } + guard let formatDescription, let refConBox else { return false } + if let old = session { + VTDecompressionSessionInvalidate(old) + session = nil + } + _feedEpoch &+= 1 + let created = makeSession(formatDescription: formatDescription, refCon: refConBox) + guard let fresh = created.session else { + sessionLost = true + EngineLog.emit( + "[HardwareVideoDecoder] AE#739 session rebuild refused (status \(created.status))", + category: .swPlayback + ) + return false + } + session = fresh + sessionLost = false + awaitingKeyframe = true + droppedAwaitingKeyframe = 0 + EngineLog.emit("[HardwareVideoDecoder] AE#739 session rebuilt", category: .swPlayback) + return true } + #if DEBUG + /// Invalidate the live session without forgetting it, which is what the system does on an iOS + /// screen lock: the next decode returns `kVTInvalidSessionErr`. For the aetherctl harness. + func invalidateSessionForTesting() { + lock.lock() + if let session { VTDecompressionSessionInvalidate(session) } + lock.unlock() + } + #endif + // MARK: - Decode func decode(packet: UnsafeMutablePointer, epoch: UInt64? = nil) { lock.lock() // AE#492: see `SoftwareVideoDecoder.decode`. Same rule, same lock as `flush()`. if let epoch, epoch != _feedEpoch { lock.unlock(); return } - guard session != nil, let formatDesc = formatDescription else { + guard session != nil, !sessionLost, let formatDesc = formatDescription else { lock.unlock() return } @@ -308,7 +379,17 @@ final class HardwareVideoDecoder: VideoDecodingPipeline, @unchecked Sendable { // the output callback never takes `lock`, and `close()` already holds it across the VT wait. lock.lock() if let epoch, epoch != _feedEpoch { lock.unlock(); return } - guard let session = self.session else { lock.unlock(); return } + guard let session = self.session, !sessionLost else { lock.unlock(); return } + var recoveredAfterDropping: Int? + if awaitingKeyframe { + guard (packet.pointee.flags & AV_PKT_FLAG_KEY) != 0 else { + droppedAwaitingKeyframe += 1 + lock.unlock() + return + } + awaitingKeyframe = false + recoveredAfterDropping = droppedAwaitingKeyframe + } // Async decode with temporal queueing; callback fires on VT's internal queue. var infoFlags = VTDecodeInfoFlags() let decodeStatus = VTDecompressionSessionDecodeFrame( @@ -318,8 +399,26 @@ final class HardwareVideoDecoder: VideoDecodingPipeline, @unchecked Sendable { frameRefcon: nil, infoFlagsOut: &infoFlags ) + // AE#739: permanent for this session. Still under the hold that fed it, so a rebuild cannot + // land between the call and the verdict and have the new session condemned for the old one. + let lostNow = decodeStatus == kVTInvalidSessionErr && !sessionLost + if lostNow { sessionLost = true } lock.unlock() - if decodeStatus != noErr { + if let recoveredAfterDropping { + EngineLog.emit( + "[HardwareVideoDecoder] AE#739 recovered at keyframe pts=\(packet.pointee.pts) " + + "after dropping \(recoveredAfterDropping) packet(s)", + category: .swPlayback + ) + } + if lostNow { + EngineLog.emit( + "[HardwareVideoDecoder] AE#739 session invalidated by the system (\(decodeStatus)) " + + "at pts=\(packet.pointee.pts); dropping video until it is rebuilt", + category: .swPlayback + ) + onSessionLost?() + } else if decodeStatus != noErr { EngineLog.emit( "[HardwareVideoDecoder] decode error \(decodeStatus) at pts=\(packet.pointee.pts)", category: .swPlayback diff --git a/Sources/AetherEngine/Decoder/SubtitleDecoder.swift b/Sources/AetherEngine/Decoder/SubtitleDecoder.swift index 6d4363759..25aa15940 100644 --- a/Sources/AetherEngine/Decoder/SubtitleDecoder.swift +++ b/Sources/AetherEngine/Decoder/SubtitleDecoder.swift @@ -95,16 +95,12 @@ enum SubtitleDecoder { // The decode blocks on AVIO reads, and an authorized read waits for the host's async // resolver, which needs a cooperative thread. Decoding on that pool lets concurrent // decodes starve their own resolvers until the authorization timeout. - try await withCheckedThrowingContinuation { continuation in - DispatchQueue.global(qos: .userInitiated).async { - continuation.resume(with: Result { - try decodeBlocking( - url: url, httpHeaders: httpHeaders, - httpRequestAuthorization: httpRequestAuthorization, - preserveASSMarkup: preserveASSMarkup, requested: requested, token: token) - }) - } - } + try await BlockingWork.detached(priority: .userInitiated) { + try decodeBlocking( + url: url, httpHeaders: httpHeaders, + httpRequestAuthorization: httpRequestAuthorization, + preserveASSMarkup: preserveASSMarkup, requested: requested, token: token) + }.value } onCancel: { token.cancel() } diff --git a/Sources/AetherEngine/Demuxer/AVIOReader.swift b/Sources/AetherEngine/Demuxer/AVIOReader.swift index 45f5e80a9..66011b780 100644 --- a/Sources/AetherEngine/Demuxer/AVIOReader.swift +++ b/Sources/AetherEngine/Demuxer/AVIOReader.swift @@ -434,6 +434,15 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } } + /// Charges a 429/503/509 to the origin. `parseRetryAfter` reads an absent header as 0, which has + /// to reach the budget as nil: a zero would arm a quiet period of nothing instead of the ladder. + private func noteRateLimitedResponse(_ response: HTTPURLResponse?) { + guard let response, Self.isRateLimitStatus(response.statusCode) else { return } + let retryAfter = Self.parseRetryAfter(response) + noteOriginRefusal(status: response.statusCode, retryAfter: retryAfter > 0 ? retryAfter : nil, + respondedBy: response.url) + } + /// #377: true when this origin is down to one request at a time, so the reader's speculative /// parallel paths must not run. They exist to overlap with the pump, overlapping is the one /// thing a single-slot origin refuses, and each has a serial fallback that is merely slower. @@ -816,6 +825,12 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// Detour blocks currently resident. var detourResidentBlocksForTesting: Int { detourCache.residentCount } + /// One detour block fetch, true when it came back rate limited. + func detourFetchIsRateLimitedForTesting(from offset: Int64, size: Int) -> Bool { + if case .rateLimited = detourFetchBlock(from: offset, size: size) { return true } + return false + } + /// The most the forward-only streaming buffer has held at once. var streamPeakBufferBytesForTesting: Int { streamLock.lock() @@ -929,6 +944,9 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { private var staleGenDroppedBytes: Int64 = 0 private var connStartedAt = DispatchTime.now() private var connFirstDataSeen = false + /// The generation `awaitFirstPersistentData` is waiting on, while it waits. Its first byte is + /// governed by the open policy's budget, not by the delivery-gap watchdog. + private var openAwaitedGeneration: Int? // Consecutive unproductive reconnects (demux-thread-only). private var unproductiveReconnects = 0 private var bytesAtLastReconnect: Int64 = 0 @@ -1092,13 +1110,16 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// #240: which reader this is, for the connection log. Several readers run against the same /// origin at once and the line used to name none of them. private let label: String + private let sourceOpenPolicy: SourceOpenPolicy + private let openDiagnosticID = String(UUID().uuidString.prefix(8)) /// Only static controlled probes use this; playback retains its existing transport policy. private let probeControl: ProbeControl? private let probeRequestSession: URLSession? private let probeDrainLock = NSLock() private var drainingProbeRequest = false - init(url: URL, extraHeaders: [String: String] = [:], label: String = "source", chunkSize: Int = 4 * 1024 * 1024, prefetchEnabled: Bool = true, isLive: Bool = false, chunkRequestTimeout: TimeInterval = 35, chunkMaxRetries: Int = 3, boundedInitialFetch: Int64? = nil, sequentialOnly: Bool = false, connStallTimeout: TimeInterval = AVIOReader.connStallTimeoutDefault, windowHighWater: Int? = nil, streamHighWater: Int? = nil, detourIdleSeconds: TimeInterval? = nil, heldConnection: Bool = false, probeControl: ProbeControl? = nil, probeRequestSession: URLSession? = nil) { + init(url: URL, extraHeaders: [String: String] = [:], label: String = "source", chunkSize: Int = 4 * 1024 * 1024, prefetchEnabled: Bool = true, isLive: Bool = false, chunkRequestTimeout: TimeInterval = 35, chunkMaxRetries: Int = 3, boundedInitialFetch: Int64? = nil, sequentialOnly: Bool = false, connStallTimeout: TimeInterval = AVIOReader.connStallTimeoutDefault, windowHighWater: Int? = nil, streamHighWater: Int? = nil, detourIdleSeconds: TimeInterval? = nil, heldConnection: Bool = false, probeControl: ProbeControl? = nil, probeRequestSession: URLSession? = nil, sourceOpenPolicy: SourceOpenPolicy = .init()) { + self.sourceOpenPolicy = sourceOpenPolicy self.probeControl = probeControl self.probeRequestSession = probeControl == nil ? nil : probeRequestSession self.url = url @@ -1161,6 +1182,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { func open() throws { try probeControl?.check() + guard !isClosed else { throw CancellationError() } guard let buf = av_malloc(Int(Self.avioBufferSize)) else { throw AVIOReaderError.allocationFailed } @@ -1252,7 +1274,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { startPersistentConnection(at: 0, boundedTo: boundedInitialFetch) opened = awaitFirstPersistentData() } - gotData = opened + gotData = try recoverUnansweredOpenIfNeeded(gotData: opened) openPrefix = firstWindowPrefix() } // AE#140: an HLS playlist URL misrouted onto the raw-byte live path. A live origin serves the @@ -1326,6 +1348,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { EngineLog.emit("[AVIOReader] Data connection resolved no size, falling back to probe", category: .demux, level: .verbose) fileSize = resolveInitialFileSize() try probeControl?.check() + guard !isClosed else { throw CancellationError() } } if isStreaming { startStreamingDownload() @@ -1353,11 +1376,11 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } else { startPersistentConnection(at: 0) if !awaitFirstPersistentData() { - EngineLog.emit("[AVIOReader] Persistent open (post-probe): no data within 15s, proceeding to read-loop reconnect", category: .demux) + EngineLog.emit("[AVIOReader] Persistent open (post-probe): no data within the open budget, proceeding to read-loop reconnect", category: .demux) } } } else if !gotData { - EngineLog.emit("[AVIOReader] Persistent open (post-probe): no data within 15s, proceeding to read-loop reconnect", category: .demux) + EngineLog.emit("[AVIOReader] Persistent open (post-probe): no data within the open budget, proceeding to read-loop reconnect", category: .demux) } } } @@ -1386,13 +1409,17 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } } if !tookFallback && !gotData { - // No first byte within 15s; read loop's stall/reconnect machinery takes over. - EngineLog.emit("[AVIOReader] Persistent open: no first byte within 15s, proceeding to read-loop reconnect", category: .demux) + // No first byte within the opening budget; read loop's stall/reconnect machinery takes over. + EngineLog.emit("[AVIOReader] Persistent open: no first byte within the opening budget, proceeding to read-loop reconnect", category: .demux) } } else { // Non-prefetch (still extraction / one-shot seekable): the size is needed up // front for SEEK_END and container index seeks, so keep the dedicated probe. fileSize = resolveInitialFileSize() + // A controlled probe's deadline/cancellation reason wins over the reader-close + // signal used to interrupt its in-flight request. + try probeControl?.check() + guard !isClosed else { throw CancellationError() } if isStreaming { startStreamingDownload() _ = streamDataReady.wait(timeout: .now() + .seconds(15)) @@ -1405,6 +1432,17 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } } + // AE#733: the AE#140/#154 classification above only reads the persistent window, and a + // forward-only open (no size, or an origin that ignores Range) leaves that window empty. A + // playlist endpoint answering 200 without a length lands exactly there, so the same check + // runs on the stream's first bytes before FFmpeg is handed the m3u8 as container bytes. + if isStreaming, Self.bodyBeginsWithHLSPlaylistTag(firstStreamPrefix()) { + EngineLog.emit("[AVIOReader] \(label) HLS playlist body on the forward-only open (AE#733); rerouting like AE#140/#154.", category: .demux) + markClosed() + close() + throw isLive ? AVIOReaderError.hlsPlaylistOnRawLivePath : AVIOReaderError.hlsPlaylistOnVODPath + } + // #126: a VOD source that finishes open() without a resolved size runs the forward-only // streaming reader; FFmpeg must not believe pb is seekable. With a seekable-flagged pb the // mov demuxer far-forward-skips to a tail moov (buffering the entire skipped span in RAM), @@ -1416,20 +1454,65 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } } - /// Block up to 15s for the persistent connection's first window bytes. The response + /// Wait for the persistent connection's first window bytes within the open policy. The response /// (and thus any Content-Range size) has already been processed by the time data /// arrives. Demux thread, open-time only. Returns true if data arrived. - private func awaitFirstPersistentData() -> Bool { + private func awaitFirstPersistentData(timeout: TimeInterval? = nil, phase: String = "first-data") -> Bool { winCond.lock() - let deadline = Date(timeIntervalSinceNow: 15) + let started = DispatchTime.now() + let budget = timeout ?? (isLive ? 15 : sourceOpenPolicy.firstByteTimeout) + let deadline = Date(timeIntervalSinceNow: budget) + openAwaitedGeneration = connGeneration while window.isEmpty && !connEnded && !isClosed { if !winCond.wait(until: deadline) { break } } + openAwaitedGeneration = nil let gotData = !window.isEmpty + let result = gotData ? "data" : (isClosed ? "cancelled" : (connEnded ? "ended" : "timeout")) + let generation = connGeneration + let status = connStatus + let knownSize = fileSize winCond.unlock() + let elapsed = Double(DispatchTime.now().uptimeNanoseconds - started.uptimeNanoseconds) / 1_000_000 + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=\(phase) gen=\(generation) result=\(result) elapsed_ms=\(Int(elapsed)) budget=\(budget)s status=\(status) size=\(knownSize)", category: .demux) return gotData } + /// A timeout is not evidence that the origin cannot seek. Retry the data request once, + /// using the alternate open-ended Range shape, and keep its body for playback. Metadata-only + /// probes would discard that body and open yet another connection, or silently downgrade an + /// unanswered seekable resource to a forward-only stream. A definitive response still takes + /// the ordinary range-validation/refusal path below. Known-size slow bodies keep their pump. + private func recoverUnansweredOpenIfNeeded(gotData: Bool) throws -> Bool { + guard !isLive, !gotData else { return gotData } + try probeControl?.check() + guard !isClosed else { throw CancellationError() } + winCond.lock() + let unanswered = fileSize <= 0 && connStatus == 0 && window.isEmpty + winCond.unlock() + guard unanswered else { return gotData } + // A trust failure cannot be repaired by changing the Range header. + try failIfStreamingRefused(fallbackStatus: 0) + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=data-retry reason=no-response budget=\(sourceOpenPolicy.sizeProbeTimeout)s", category: .demux) + startPersistentConnection(at: 0, openEnded: true) + let recovered = awaitFirstPersistentData(timeout: sourceOpenPolicy.sizeProbeTimeout, + phase: "data-retry") + try probeControl?.check() + guard !isClosed else { throw CancellationError() } + try failIfStreamingRefused(fallbackStatus: 0) + winCond.lock() + let unresolved = fileSize <= 0 && connStatus == 0 && window.isEmpty + let ended = connEnded + winCond.unlock() + if unresolved { + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=failed reason=no-response seekability=unknown not downgrading to sequential", category: .demux) + markClosed() + close() + throw ended ? AVIOReaderError.noResponse : AVIOReaderError.requestTimeout + } + return recovered + } + /// The refusal status the current persistent connection ended on, nil when it did not end on one /// of the `isResolvedExpiryStatus` refusals. Demux thread, open-time only. private func refusalOfOpenConnection() -> Int? { @@ -1501,6 +1584,14 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { return window.prefix(n) } + /// Leading bytes of the forward-only stream at open, before any read has consumed them. + private func firstStreamPrefix(max: Int = 16) -> [UInt8] { + streamLock.lock() + defer { streamLock.unlock() } + guard streamBytesRead == 0 else { return [] } + return streamBuffer.prefix(max) + } + /// True when a body's leading bytes are the HLS playlist tag `#EXTM3U`, tolerating a UTF-8 BOM and /// leading ASCII whitespace. A raw media container never opens with '#', so this is an unambiguous /// signal that an m3u8 playlist was handed to the raw-byte reader (AE#140). Static + internal so the @@ -2730,11 +2821,9 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { slotWait: min(budget, Self.shortFetchSlotWaitSeconds)) if let http = response as? HTTPURLResponse { let status = http.statusCode + // Already charged to the origin by `syncRequest`, before it returned the slot. if Self.isRateLimitStatus(status) { - let retryAfter = Self.parseRetryAfter(http) - noteOriginRefusal(status: status, retryAfter: retryAfter > 0 ? retryAfter : nil, - respondedBy: http.url) - return .rateLimited(retryAfter) + return .rateLimited(Self.parseRetryAfter(http)) } if status != 200 && status != 206 { if Self.isResolvedExpiryStatus(status) { invalidateResolvedURL() } @@ -3088,7 +3177,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// Open a fresh Range: bytes=- connection (live: always `bytes=0-`, see the /// request construction below). Bumps generation so late callbacks from the old /// connection are ignored. - private func startPersistentConnection(at offset: Int64, boundedTo: Int64? = nil) { + private func startPersistentConnection(at offset: Int64, boundedTo: Int64? = nil, openEnded: Bool = false) { winCond.lock() connGeneration &+= 1 let generation = connGeneration @@ -3105,6 +3194,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { // instead, and asking for a finite range would put the request cadence straight back. An // explicit caller bound still wins, because that caller wants a specific amount read. let resolvedBound: Int64? = boundedTo ?? { + guard !openEnded else { return nil } guard !heldConnectionEnabled else { return nil } guard !isLive else { return nil } // fileSize is still 0 on the very first connection, since the response's @@ -3198,7 +3288,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { // means "wait for the short thing to finish", not "give up". let requestURLForBudget = request.url ?? url let ticket = OriginRequestBudget.shared.acquire( - for: requestURLForBudget, label: "\(label) pump", timeout: Self.pumpSlotWaitSeconds, + for: requestURLForBudget, label: "\(label)#\(openDiagnosticID) pump", timeout: Self.pumpSlotWaitSeconds, shouldAbort: { [weak self] in self?.isClosed ?? true }) // Audit DMX-112: a pump torn down while parked for its slot leaves without a transfer. if ticket == nil, isClosed { return } @@ -3252,6 +3342,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { EngineLog.emit( "[AVIOReader] \(label) conn start gen=\(generation) offset=\(offset)" + (resolvedBound.map { " len=\($0 / 1024 / 1024)MB" } ?? " open-ended") + + " reader=\(openDiagnosticID) slot_ms=\(Int(ticket?.waitedMs ?? 0))" + (heldConnectionEnabled ? " held" : "") + (skippedConnStarts > 0 ? " (+\(skippedConnStarts) contiguous ranges since the last line)" : "") + reResolveNote(), @@ -3332,6 +3423,14 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { winCond.unlock() return } + // The open is waiting on this generation's first byte with a budget of its own + // (`SourceOpenPolicy`), which a host sets longer than the stall threshold for an origin that + // is slow to answer. Ending it here cut both open attempts at the threshold instead. + if openAwaitedGeneration == generation, !connFirstDataSeen { + winCond.unlock() + armDeliveryGapWatchdog(generation: generation, after: connStallTimeout) + return + } let gap = Double(DispatchTime.now().uptimeNanoseconds - lastDeliveryAt.uptimeNanoseconds) / 1_000_000_000 // A held connection sitting on a full window has no read outstanding: the pump asked for a @@ -3720,8 +3819,8 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { applyExtraHeaders(&request) // #377: this connection is open for the whole session, so it holds its slot for the whole - // session, which is exactly what it costs the origin. Scoped to this function because the - // function does not return until the transfer ends. A streaming-mode source has no detour + // session, which is exactly what it costs the origin. Returned at network completion so a + // lower-priority caller need not resume first. A streaming-mode source has no detour // or ranged probe to starve (they are all switched off on this path), so a held slot here // blocks nothing but a second reader on the same origin, which is the point. let streamTicket: OriginRequestBudget.Ticket? @@ -3735,7 +3834,8 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { streamDataReady.signal() return } - defer { OriginRequestBudget.shared.release(streamTicket) } + let lease = OriginRequestBudget.Lease(streamTicket) + defer { lease.release() } let semaphore = DispatchSemaphore(value: 0) @@ -3809,6 +3909,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { self.addBytesFetched(data.count) self.streamDataReady.signal() } onComplete: { [weak self] error in + lease.release() guard let self else { semaphore.signal() return @@ -3824,7 +3925,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { let streamSession = URLSession( configuration: Self.makeSessionConfig(longLived: true), delegate: delegate, - delegateQueue: nil + delegateQueue: AVIOReader.makePlaybackDelegateQueue() ) let task = streamSession.dataTask(with: request) @@ -3964,6 +4065,17 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { // MARK: - Network (seekable mode) + /// These callbacks deliver foreground playback bytes and return origin slots to blocked + /// demux threads. URLSession's implicit queue can run at utility QoS and cannot donate + /// priority through a semaphore. Each session keeps its own serial callback queue. + static func makePlaybackDelegateQueue() -> OperationQueue { + let queue = OperationQueue() + queue.name = "aether.avio.callbacks" + queue.qualityOfService = .userInitiated + queue.maxConcurrentOperationCount = 1 + return queue + } + /// Long-lived session for file-size probes. Per-request sessions force fresh TLS /// handshakes, which Cloudflare-fronted origins can flag as suspicious. Distinct /// from syncRequest's per-request pattern (load-bearing for chunk-fetch leak control). @@ -3971,7 +4083,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { let config = URLSessionConfiguration.default config.urlCache = nil config.timeoutIntervalForRequest = 20 - return URLSession(configuration: config, delegate: EngineTLS.sessionDelegate, delegateQueue: nil) + return URLSession(configuration: config, delegate: EngineTLS.sessionDelegate, delegateQueue: AVIOReader.makePlaybackDelegateQueue()) }() /// Audit DMX-5: where a 206 says its body starts, when that is not where it was asked to. @@ -4093,17 +4205,9 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// fallback request (identical wire behavior to the old sequential ladder). static let sizeProbeStaggerSeconds: TimeInterval = 0.75 - /// Shared, condition-guarded state for the staggered-concurrent size probes. Every field is - /// touched only while `cond` is held, so the box is safe to capture in the @Sendable probe closures. - private final class ProbeSizeState: @unchecked Sendable { - let cond = NSCondition() - var resolvedSize: Int64 = -1 - var outstanding = 0 - } - private func probeFileSize() -> Int64 { if let probeControl { - // No staggered worker outlives a one-shot probe, and no fallback starts after a stop. + // Disposable probes retain their own cancellation and lifetime contract. if let size = rangeProbeFileSize(range: "bytes=0-"), size > 0 { return size } guard !probeControl.isStopped else { return -1 } let head = headProbeFileSize() @@ -4111,69 +4215,112 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { guard !probeControl.isStopped else { return -1 } return rangeProbeFileSize(range: "bytes=0-1") ?? -1 } - // Staggered-concurrent ladder (#107 follow-up). The probes themselves are unchanged: - // Range bytes=0- primary (AetherEngine#8: HEAD breaks on Cloudflare-fronted origins - // returning 405), HEAD for live-transcode endpoints that reject Range, and the #126 - // bounded bytes=0-1 for origins that answer bytes=0- with 200/chunked but honor real - // ranges. Sequentially each failing probe cost a full origin round-trip; a live tuner - // pays its ~4 s tune-in on EVERY connection, so the ladder tripled the open latency - // of every genuinely length-less source. The fallbacks now start after a short - // stagger and run in parallel; the first positive size wins. - // All mutable probe state lives inside ProbeSizeState, guarded entirely by its own - // NSCondition, so the box is a safe capture for the @Sendable asyncAfter closures below - // (Swift 6 SendableClosureCaptures otherwise flags the raw local vars and the run thunk). - let state = ProbeSizeState() - - func launch(after delay: TimeInterval, name: String, _ run: @escaping @Sendable () -> Int64) { - state.cond.lock(); state.outstanding += 1; state.cond.unlock() - let probe = Thread { [weak self] in - if delay > 0 { Thread.sleep(forTimeInterval: delay) } - state.cond.lock() - let alreadyResolved = state.resolvedSize > 0 - state.cond.unlock() - let closed = self?.isClosed ?? true - let size = (alreadyResolved || closed) ? -1 : run() - state.cond.lock() - if size > 0, state.resolvedSize <= 0 { - state.resolvedSize = size - EngineLog.emit("[AVIOReader] File size: \(size) bytes (\(name))", category: .demux) + let scope = SourceSizeProbeScope(timeout: min(sourceOpenPolicy.sizeProbeTimeout, chunkRequestTimeout)) + let serial = OriginRequestBudget.shared.requiresSerialRequests(url) + let forms: [(method: String, range: String?)] = [ + ("GET", "bytes=0-"), ("HEAD", nil), ("GET", "bytes=0-1") + ] + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=size-probes mode=\(serial ? "serial" : "staggered") budget=\(sourceOpenPolicy.sizeProbeTimeout)s", category: .demux) + + if serial { + // A fan of probes cannot win a race on a one-request origin. Reserve time for each + // fallback and return the current ticket before trying the next request shape. + scope.addWorker() + Thread.detachNewThread { [self] in + defer { scope.finishWorker() } + for (index, form) in forms.enumerated() { + guard !scope.isStopped, !isClosed else { return } + let budget = scope.remaining / Double(forms.count - index) + let size = startupSizeProbe(method: form.method, range: form.range, + budget: budget, scope: scope) + if size > 0 { scope.resolve(size); return } + } + } + } else { + for (index, form) in forms.enumerated() { + scope.addWorker() + Thread.detachNewThread { [self] in + defer { scope.finishWorker() } + guard scope.waitToStart(after: index == 0 ? 0 : Self.sizeProbeStaggerSeconds), + !isClosed else { return } + let size = startupSizeProbe(method: form.method, range: form.range, + budget: scope.remaining, scope: scope) + scope.resolve(size) } - state.outstanding -= 1 - state.cond.broadcast() - state.cond.unlock() } - probe.name = "aether.avio.size-probe.\(name)" - probe.qualityOfService = .userInitiated - probe.start() - } - - launch(after: 0, name: "Range probe") { [weak self] in - self?.rangeProbeFileSize(range: "bytes=0-") ?? -1 - } - launch(after: Self.sizeProbeStaggerSeconds, name: "HEAD fallback") { [weak self] in - self?.headProbeFileSize() ?? -1 } - launch(after: Self.sizeProbeStaggerSeconds, name: "bounded-range fallback") { [weak self] in - self?.rangeProbeFileSize(range: "bytes=0-1") ?? -1 + // The scoped deadline and cancellation also observe a closed reader. Join every probe + // before resuming playback so a losing request cannot occupy the origin's last slot. + let size = scope.join { [weak self] in self?.isClosed ?? true } + if size <= 0, !isClosed { + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=size-probes result=unresolved", category: .demux) } + return size + } - // Budget mirrors a single sequential probe (its own 20-25 s ceiling) plus the stagger; - // isClosed teardown breaks the individual probes, which then signal outstanding down. - // Sodalite#173: the wait polls isClosed itself, since a fallback still asleep in its stagger - // would otherwise hold a closed open for up to the full stagger. - let deadline = Date(timeIntervalSinceNow: Self.sizeProbeStaggerSeconds + min(25, chunkRequestTimeout) + 2) - state.cond.lock() - while state.resolvedSize <= 0 && state.outstanding > 0 && !isClosed { - let now = Date() - if now >= deadline { break } - _ = state.cond.wait(until: min(deadline, now.addingTimeInterval(0.05))) + /// Header-only request used by the playback size discovery. Slot wait and response wait share + /// one budget. A refused slot is never bypassed for speculative metadata work. + private func startupSizeProbe(method: String, range: String?, budget: TimeInterval, + scope: SourceSizeProbeScope) -> Int64 { + let started = DispatchTime.now() + let deadline = started + max(0, budget) + func remaining() -> TimeInterval { + let now = DispatchTime.now().uptimeNanoseconds + return deadline.uptimeNanoseconds > now + ? min(scope.remaining, Double(deadline.uptimeNanoseconds - now) / 1_000_000_000) : 0 } - let size = state.resolvedSize - state.cond.unlock() - if size <= 0, !isClosed { - EngineLog.emit("[AVIOReader] no probe resolved a size, streaming mode (forward-only)", category: .demux) + var request = URLRequest(url: requestURL()) + request.httpMethod = method + if let range { request.setValue(range, forHTTPHeaderField: "Range") } + applyExtraHeaders(&request) + let ticket: OriginRequestBudget.Ticket? + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=size-probe-start method=\(method) range=\(range ?? "none") budget=\(budget)s", category: .demux) + do { + ticket = try requestTicket(for: request.url ?? url, + label: "\(label)#\(openDiagnosticID) size-\(method)-\(range ?? "none")", + timeout: min(Self.shortFetchSlotWaitSeconds, remaining()), + shouldAbort: { scope.isStopped || remaining() <= 0 }, requireGranted: true) + } catch { + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=size-probe-stop method=\(method) range=\(range ?? "none") reason=slot-unavailable-or-cancelled", category: .demux) + return -1 } - return size > 0 ? size : -1 + let lease = OriginRequestBudget.Lease(ticket) + defer { lease.release() } + guard !scope.isStopped, !isClosed, remaining() > 0 else { return -1 } + request.timeoutInterval = max(0.001, remaining()) + let delegate = ProbeDelegate(extraHeaders: headers(for: request.url)) + let task = Self.probeSession.dataTask(with: request) + task.delegate = delegate + let completion = DispatchSemaphore(value: 0) + delegate.onCompletion = { [weak self] response in + self?.noteRateLimitedResponse(response) + lease.release() + completion.signal() + } + delegate.onResolved = { [weak self] in + guard !scope.isStopped else { return } + self?.recordResolvedURL($0) + } + guard scope.resume(task) else { task.cancel(); return -1 } + defer { scope.remove(task) } + let outcome = Self.awaitSignal(completion, budget: remaining(), pollInterval: 0.05, + shouldAbort: { [weak self] in scope.isStopped || self?.isClosed != false }) + // Read delegate fields only after completion transfers ownership. On timeout/cancellation + // the delegate stays owned by URLSession until its callback; none of its state is read here. + let size: Int64 + let status: Int + if outcome == .signaled { + size = delegate.totalSize ?? -1 + status = delegate.statusCode + noteTransportSecurityFailure(delegate.error) + } else { + task.cancel() + size = -1 + status = 0 + } + let elapsed = Double(DispatchTime.now().uptimeNanoseconds - started.uptimeNanoseconds) / 1_000_000 + EngineLog.emit("[SourceOpen] reader=\(openDiagnosticID) phase=size-probe method=\(method) range=\(range ?? "none") slot_ms=\(Int(ticket?.waitedMs ?? 0)) total_ms=\(Int(elapsed)) status=\(status) size=\(size) outcome=\(outcome)", category: .demux) + return size } /// Range GET cancelled at didReceive response (no body transfers). Returns the total from @@ -4202,14 +4349,19 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { } catch { return nil } - defer { OriginRequestBudget.shared.release(ticket) } + let lease = OriginRequestBudget.Lease(ticket) + defer { lease.release() } let delegate = ProbeDelegate(extraHeaders: headers(for: request.url)) let task = (probeRequestSession ?? Self.probeSession).dataTask(with: request) task.delegate = delegate let semaphore = DispatchSemaphore(value: 0) - delegate.onCompletion = { semaphore.signal() } + delegate.onCompletion = { [weak self] response in + self?.noteRateLimitedResponse(response) + lease.release() + semaphore.signal() + } delegate.onResolved = { [weak self] resolved in self?.recordResolvedURL(resolved) } @@ -4249,9 +4401,6 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { guard let http = response as? HTTPURLResponse, (200...299).contains(http.statusCode) else { let status = (response as? HTTPURLResponse)?.statusCode ?? -1 - if Self.isRateLimitStatus(status) { - noteOriginRefusal(status: status, respondedBy: (response as? HTTPURLResponse)?.url) - } EngineLog.emit("[AVIOReader] HEAD failed (HTTP \(status))", category: .demux, level: .verbose) return -1 } @@ -4340,7 +4489,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// No invalidation overhead. private static let chunkSession: URLSession = { let config = makeSessionConfig() - return URLSession(configuration: config, delegate: EngineTLS.sessionDelegate, delegateQueue: nil) + return URLSession(configuration: config, delegate: EngineTLS.sessionDelegate, delegateQueue: AVIOReader.makePlaybackDelegateQueue()) }() /// #220: long-lived session for the persistent streaming path, paired with a per-task @@ -4356,7 +4505,7 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { /// /// Never invalidated. Releasing a connection is `task.cancel()` now, not session teardown. private static let persistentSession: URLSession = { - URLSession(configuration: makeSessionConfig(longLived: true), delegate: EngineTLS.sessionDelegate, delegateQueue: nil) + URLSession(configuration: makeSessionConfig(longLived: true), delegate: EngineTLS.sessionDelegate, delegateQueue: AVIOReader.makePlaybackDelegateQueue()) }() /// Outcome of an abortable semaphore wait (issue #27). @@ -4438,12 +4587,17 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { nonisolated(unsafe) static var peakBodyReserveForTesting = 0 private func requestTicket(for url: URL, label: String, - timeout: TimeInterval) throws -> OriginRequestBudget.Ticket? { + timeout: TimeInterval, shouldAbort: (() -> Bool)? = nil, + requireGranted: Bool = false) throws -> OriginRequestBudget.Ticket? { guard let probeControl else { let ticket = OriginRequestBudget.shared.acquire( for: url, label: label, timeout: timeout, - shouldAbort: { [weak self] in self?.isClosed ?? true }) - if ticket == nil, isClosed { throw CancellationError() } + allowOvercommit: !requireGranted, + shouldAbort: { [weak self] in (self?.isClosed ?? true) || (shouldAbort?() ?? false) }) + if isClosed || (shouldAbort?() ?? false) || (requireGranted && ticket?.granted != true) { + OriginRequestBudget.shared.release(ticket) + throw CancellationError() + } return ticket } guard !isClosed else { throw CancellationError() } @@ -4489,11 +4643,13 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { slotWait: TimeInterval = AVIOReader.shortFetchSlotWaitSeconds) throws -> (Data, URLResponse) { // #377: every short fetch the reader makes (detour blocks, size probes, HEAD) funnels // through here, so this is the one place that has to take an origin slot for all of them. - // Scoped to the call: unlike the pump's, this request's life IS this function's. + // Refusals are charged before the completion callback returns the slot. Early exit + // releases the same lease idempotently. let slotURL = request.url ?? url let ticket = try requestTicket( for: slotURL, label: "\(label) \(slotLabel)", timeout: slotWait) - defer { OriginRequestBudget.shared.release(ticket) } + let lease = OriginRequestBudget.Lease(ticket) + defer { lease.release() } let delegate = ChunkFetchDelegate(extraHeaders: headers(for: request.url), bodyLimit: Self.expectedBodyBytes(for: request)) @@ -4501,7 +4657,11 @@ final class AVIOReader: AVIOProvider, @unchecked Sendable { task.delegate = delegate let semaphore = DispatchSemaphore(value: 0) - delegate.onCompletion = { semaphore.signal() } + delegate.onCompletion = { [weak self] response in + self?.noteRateLimitedResponse(response) + lease.release() + semaphore.signal() + } delegate.onResolved = { [weak self] resolved in self?.recordResolvedURL(resolved) } @@ -4939,7 +5099,7 @@ private final class ChunkFetchDelegate: NSObject, URLSessionDataDelegate, @unche /// Set when the origin sent past `bodyLimit` and the task was cancelled mid-body, so the /// caller reads the kept prefix as a success instead of a cancellation failure. var truncated = false - var onCompletion: (() -> Void)? + var onCompletion: ((HTTPURLResponse?) -> Void)? var onResolved: ((URL) -> Void)? init(extraHeaders: [String: String], bodyLimit: Int?) { @@ -5031,7 +5191,7 @@ private final class ChunkFetchDelegate: NSObject, URLSessionDataDelegate, @unche didCompleteWithError error: Error? ) { self.error = error - onCompletion?() + onCompletion?(response as? HTTPURLResponse) } } @@ -5128,7 +5288,10 @@ private final class StreamingDelegate: NSObject, URLSessionDataDelegate { private final class ProbeDelegate: NSObject, URLSessionDataDelegate, @unchecked Sendable { let extraHeaders: [String: String] var totalSize: Int64? - var onCompletion: (() -> Void)? + var statusCode: Int = 0 + var response: HTTPURLResponse? + var error: Error? + var onCompletion: ((HTTPURLResponse?) -> Void)? var onResolved: ((URL) -> Void)? init(extraHeaders: [String: String]) { @@ -5164,6 +5327,8 @@ private final class ProbeDelegate: NSObject, URLSessionDataDelegate, @unchecked defer { completionHandler(.cancel) } guard let http = response as? HTTPURLResponse else { return } let status = http.statusCode + statusCode = status + self.response = http if (200...299).contains(status), let resolved = dataTask.currentRequest?.url { onResolved?(resolved) } @@ -5174,7 +5339,8 @@ private final class ProbeDelegate: NSObject, URLSessionDataDelegate, @unchecked } func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) { - onCompletion?() + self.error = error + onCompletion?(response) } } diff --git a/Sources/AetherEngine/Demuxer/CustomIOReaderBridge.swift b/Sources/AetherEngine/Demuxer/CustomIOReaderBridge.swift index 0032ffe57..d39527bfa 100644 --- a/Sources/AetherEngine/Demuxer/CustomIOReaderBridge.swift +++ b/Sources/AetherEngine/Demuxer/CustomIOReaderBridge.swift @@ -21,7 +21,11 @@ final class CustomIOReaderBridge: AVIOProvider, @unchecked Sendable { reader as? TimeSeekableIOReader } - var cumulativeBytesFetched: Int64 { 0 } // custom readers don't track network bytes + /// What the reader reports pulling from the origin. A remote disc image reads through the + /// engine's `HTTPDiscIOReader`, which counts; before, every custom source reported 0, so a disc + /// session showed no source bytes and no software-path throughput at all. A host's own reader + /// still reports 0: the engine cannot tell its network bytes from a local read. + var cumulativeBytesFetched: Int64 { (reader as? SourceTransferCounting)?.sourceBytesFetched ?? 0 } /// #112 round 9: same demux-thread-only contract as AVIOReader's deadline. Armed by /// `Demuxer.seekBounded` around a positioning seek; `performRead` checks it between callbacks, so diff --git a/Sources/AetherEngine/Demuxer/Demuxer.swift b/Sources/AetherEngine/Demuxer/Demuxer.swift index 502205492..eb7b82f5d 100644 --- a/Sources/AetherEngine/Demuxer/Demuxer.swift +++ b/Sources/AetherEngine/Demuxer/Demuxer.swift @@ -81,6 +81,13 @@ struct DemuxerOpenProfile: Sendable { /// one reader's generation counter as several concurrent connections, because nothing in the line /// distinguished them. Defaults to the pump, since every other path builds its profile explicitly. var readerLabel: String = "pump" + var sourceOpenPolicy: SourceOpenPolicy = .init() + + func withSourceOpenPolicy(_ policy: SourceOpenPolicy) -> DemuxerOpenProfile { + var copy = self + copy.sourceOpenPolicy = policy + return copy + } /// Whether a probe of an untagged 10-bit HEVC source may read its first RPU to find a Dolby Vision /// Profile 5 the container never recorded (`DolbyVisionRecordAudit.addRecordIfProfile5`). On for every @@ -482,6 +489,9 @@ public final class Demuxer: @unchecked Sendable { /// A clip's observed base is only trusted on a clean forward crossing (`idx == lastReadClipIdx + 1`), /// so a seek landing mid-clip cannot mis-anchor that clip's fold offset. AE#105. private var lastReadClipIdx: Int = -1 + /// The selected Blu-ray title's EP-map seek table, when every clip has one: a seek then goes to the + /// keyframe's byte instead of searching by timestamp (`seekByDiscTableLocked`). Under `accessLock`. + private var discSeekTable: DiscSeekTable? /// Observed raw STC base (seconds) of clip 0's first read packet. The fold anchors every clip to this so /// the folded timeline stays in clip 0's raw domain (the producer gate then zero-bases it). NaN until the /// first packet is read. Guarded by `accessLock`. AE#105. @@ -490,6 +500,11 @@ public final class Demuxer: @unchecked Sendable { /// the first time it is read and cached (stable across seeks). NaN = not yet resolved. Guarded by /// `accessLock`. AE#105. private var clipResolvedShiftSec: [Double] = [] + /// The selected DVD title is folded by cell (`DiscReader.dvdCellTimeline`): each cell's timestamp base + /// comes from its navigation packs (`adoptDVDNav`). Under `accessLock`. + private var dvdCellFold = false + /// The selected DVD title's time map: a seek goes to the VOBU's byte (`seekByDVDTimeMapLocked`). + private var dvdTimeMap: DVDTimeMap? /// AE#105 diag: last clip index we logged a boundary crossing for, and the last folded PTS /// (seconds) seen, so a crossing can print the true raw jump against the applied offset. private var diagLastLoggedClipIndex: Int = -1 @@ -501,6 +516,9 @@ public final class Demuxer: @unchecked Sendable { discStreamLanguages = info.selectedTitle?.streamLanguages ?? [:] discSubpictureStreamIDs = info.selectedTitle?.dvdSubpictureStreamIDs clipTimeline = info.clipTimeline + discSeekTable = info.seekTable + dvdTimeMap = info.dvdTimeMap + dvdCellFold = info.formatHint == "mpeg" && !info.clipTimeline.isEmpty lastClipIndex = 0 lastReadClipIdx = -1 clipBase0Sec = .nan @@ -763,7 +781,8 @@ public final class Demuxer: @unchecked Sendable { chunkMaxRetries: openProfile.avioMaxRetries, boundedInitialFetch: openProfile.boundedInitialFetch, sequentialOnly: openProfile.avioSequentialOnly, - heldConnection: openProfile.avioHeldConnection + heldConnection: openProfile.avioHeldConnection, + sourceOpenPolicy: openProfile.sourceOpenPolicy ) reader.onNetworkPhaseChanged = onNetworkPhaseChanged reader.playIntentProvider = playIntentProvider @@ -1035,6 +1054,11 @@ public final class Demuxer: @unchecked Sendable { throw DemuxerError.streamInfoFailed(code: findRet) } logStreams(ctx) + // A cell-folded DVD title is anchored on cell 0's base, which is where the stream starts (the + // engine's source axis starts there too), so a resume that lands in a later cell can fold at once. + if dvdCellFold, clipBase0Sec.isNaN, ctx.pointee.start_time != Int64.min { + clipBase0Sec = Double(ctx.pointee.start_time) / Double(AV_TIME_BASE) + } armGeneratedPTSSuppression(ctx) if openProfile.auditsRecordlessDolbyVision, let source = auditSource { let idx = av_find_best_stream(ctx, AVMEDIA_TYPE_VIDEO, -1, -1, nil, 0) @@ -1223,9 +1247,23 @@ public final class Demuxer: @unchecked Sendable { /// AVFormatContext.bit_rate in bps, or 0 if unknown. Used by /// HLSVideoEngine.masterBandwidth to populate HLS BANDWIDTH attributes. + /// + /// A disc title takes its rate from its own size over its playlist duration instead, whenever + /// libavformat produced one. libavformat divides the source size by the duration it read off the + /// timestamps, and that duration is as unreliable over a multi-clip title whose clips restart their + /// clock as it is for `duration` (AE#105): a 6537 s title whose two clips both start at 11.6 s probed + /// as 388 s, and its 54.6 GB declared 1.1 Gbit/s on average and 2.25 Gbit/s at peak, a variant no + /// AVPlayer ever chose (it waited with no item to play). A title libavformat gives no rate for keeps + /// the 0 and the caller's over-declared fallback. var bitRate: Int64 { guard let ctx = formatContext else { return 0 } - return ctx.pointee.bit_rate + let declared = ctx.pointee.bit_rate + guard declared > 0, let titleSeconds = selectedDiscTitleDurationSeconds, let pb = ctx.pointee.pb else { + return declared + } + let size = avio_size(pb) + guard size > 0 else { return declared } + return Int64((Double(size) * 8 / titleSeconds).rounded()) } /// AVFormatContext.start_time in AV_TIME_BASE units. Non-zero on re-muxed @@ -1771,6 +1809,10 @@ public final class Demuxer: @unchecked Sendable { // AVDISCARD_DEFAULT = 0 (= passthrough), AVDISCARD_NONKEY = 32, AVDISCARD_ALL = 48. if keep.contains(i) { stream.pointee.discard = AVDISCARD_DEFAULT + } else if dvdCellFold, stream.pointee.codecpar.pointee.codec_id == AV_CODEC_ID_DVD_NAV { + // A cell-folded DVD title reads its navigation packs for the cell bases; `readPacketLocked` + // absorbs them, so they never reach a caller. + stream.pointee.discard = AVDISCARD_DEFAULT } else if i == pacing { stream.pointee.discard = AVDISCARD_NONKEY } else { @@ -1966,6 +2008,11 @@ public final class Demuxer: @unchecked Sendable { private func readPacketLocked() throws -> UnsafeMutablePointer? { while true { guard let read = try readDemuxedPacketLocked() else { return nil } + if dvdCellFold, adoptDVDNav(read) { + var owned: UnsafeMutablePointer? = read + trackedPacketFree(&owned) + continue + } var packet: UnsafeMutablePointer? = read let index = read.pointee.stream_index guard subpictureAssemblers[index] != nil else { return read } @@ -2161,6 +2208,8 @@ public final class Demuxer: @unchecked Sendable { // seekable by design, so live callers keep their own rules. guard isSourceSeekable else { return false } dropPeekedPacketsLocked() + if seekByDiscTableLocked(ctx, sourceSeconds: seconds) { return true } + if seekByDVDTimeMapLocked(ctx, sourceSeconds: seconds) { return true } let ret = avformat_seek_file(ctx, -1, Int64.min, timestamp, Int64.max, 0) if ret < 0 { #if DEBUG @@ -2199,6 +2248,11 @@ public final class Demuxer: @unchecked Sendable { } guard isSourceSeekable else { return false } // audit HLS-103, see `seek(to:)` dropPeekedPacketsLocked() + if dvdTimeMap != nil, let timeBase = ctx.pointee.streams[Int(streamIndex)]?.pointee.time_base, + timeBase.num > 0, timeBase.den > 0, + seekByDVDTimeMapLocked(ctx, sourceSeconds: Double(timestamp) * Double(timeBase.num) / Double(timeBase.den)) { + return true + } let ret = avformat_seek_file( ctx, streamIndex, @@ -2348,6 +2402,11 @@ public final class Demuxer: @unchecked Sendable { // seek on a remote ISO sat wedged ~230 s and every later re-arm queued behind it. avioProvider?.beginReadDeadline(secondsFromNow: timeout) defer { avioProvider?.endReadDeadline() } + // The software path and the subtitle side reader reposition here, so a disc title seeks by its + // EP maps or its DVD time map here too, whichever stream anchors the request. + if seekByDiscTableLocked(ctx, sourceSeconds: seconds) || seekByDVDTimeMapLocked(ctx, sourceSeconds: seconds) { + return !(avioProvider?.readDeadlineFired ?? false) && probeControl?.isStopped != true + } let ret = avformat_seek_file(ctx, anchor, Int64.min, timestamp, Int64.max, 0) avformat_flush(ctx) resetSubpictureAssembly() // #651: libavformat just dropped the parsers this stands in for @@ -2539,6 +2598,85 @@ public final class Demuxer: @unchecked Sendable { videoTimeBaseNum: tbNum, videoTimeBaseDen: tbDen) } + /// Repositions a Blu-ray title to the keyframe at or before `seconds` (the folded source axis) by its + /// clips' EP maps, in one byte seek. A timestamp search over a title whose clips each run their own + /// clock from the same start cannot tell the clips apart: a 3000 s seek on a two-clip title whose + /// clips both start at 11.6 s landed in the second clip, four packets before its end. Returns false, + /// with nothing moved, when the title has no table; the caller searches by timestamp then. Caller + /// holds `accessLock`. + private func seekByDiscTableLocked(_ ctx: UnsafeMutablePointer, sourceSeconds seconds: Double) -> Bool { + guard let table = discSeekTable, + let hit = table.keyframe(forSourceSeconds: seconds, base0Sec: clipBase0Sec), + avformat_seek_file(ctx, -1, hit.offset, hit.offset, hit.offset, AVSEEK_FLAG_BYTE) >= 0 else { return false } + EngineLog.emit("[Demuxer] EP map seek: source=\(String(format: "%.3f", seconds))s -> clip \(hit.clip) keyframe " + + "\(String(format: "%.3f", hit.keyframeSec))s on its clock, byte \(hit.offset)", category: .demux) + avformat_flush(ctx) + resetSubpictureAssembly() // #651 + lastReadClipIdx = -1 // AE#105: a landing mid-clip is not a clean crossing + return true + } + + /// Repositions a DVD title to the VOBU at or before `seconds` (the folded source axis: cell 0's base + /// plus title time) by its time map, in one byte seek. Over a title whose cells restart their + /// timestamps, a timestamp search lands nowhere near: a 2000 s seek read straight to the end of the + /// title and the session ended. Returns false, with nothing moved, without a time map or before cell 0's + /// base is known; the caller searches by timestamp then. Caller holds `accessLock`. + private func seekByDVDTimeMapLocked(_ ctx: UnsafeMutablePointer, sourceSeconds seconds: Double) -> Bool { + guard let map = dvdTimeMap, clipBase0Sec.isFinite else { return false } + let titleSeconds = max(0, seconds - clipBase0Sec) + let offset = map.byteOffset(forTitleSeconds: titleSeconds) + guard avformat_seek_file(ctx, -1, offset, offset, offset, AVSEEK_FLAG_BYTE) >= 0 else { return false } + EngineLog.emit("[Demuxer] DVD time map seek: title=\(String(format: "%.3f", titleSeconds))s -> byte \(offset)", + category: .demux) + avformat_flush(ctx) + resetSubpictureAssembly() // #651 + lastReadClipIdx = -1 // landing mid-cell; its offset comes from the next navigation pack + return true + } + + /// Absorbs a DVD navigation pack, recording the timestamp base of the cell it is in; true when the + /// packet was one (the caller drops it). A navigation pack leads every VOBU, so a cell entered in + /// order and a seek landing mid-cell both meet it before that cell's audio and video, and the cell's + /// offset is in place before its first packet is folded. Caller holds `accessLock`. + private func adoptDVDNav(_ packet: UnsafeMutablePointer) -> Bool { + guard let ctx = formatContext, + let stream = ctx.pointee.streams[Int(packet.pointee.stream_index)], + stream.pointee.codecpar.pointee.codec_id == AV_CODEC_ID_DVD_NAV else { return false } + guard let data = packet.pointee.data, packet.pointee.size > 0, + let cellBase = Self.dvdCellBaseSeconds(pci: UnsafeBufferPointer(start: data, count: Int(packet.pointee.size))) + else { return true } + let idx = ClipSpan.index(forPos: packet.pointee.pos, in: clipTimeline, fallback: lastClipIndex) + if idx == 0 { + if clipBase0Sec.isNaN { clipBase0Sec = cellBase } + return true + } + guard clipBase0Sec.isFinite, idx < clipResolvedShiftSec.count else { return true } + let shift = ClipFold.offsetSeconds(observedBaseSec: cellBase, base0Sec: clipBase0Sec, + cumulativeBeforeSec: clipTimeline[idx].cumulativeBeforeSec) + if !clipResolvedShiftSec[idx].isFinite || abs(clipResolvedShiftSec[idx] - shift) > 0.05 { + clipResolvedShiftSec[idx] = shift + EngineLog.emit("[Demuxer] DVD cell \(idx): base=\(String(format: "%.3f", cellBase))s " + + "cumBefore=\(String(format: "%.1f", clipTimeline[idx].cumulativeBeforeSec))s -> shift " + + "\(String(format: "%.3f", shift))s", category: .demux) + } + return true + } + + /// The raw timestamp (seconds) at which the cell a navigation pack's PCI belongs to starts: the + /// VOBU's start PTS (90 kHz) less the cell's elapsed time (C_ELTM, BCD with a frame count). nil for a + /// DSI or a PCI too short to read; libavformat hands the two over as separate packets, the PCI's + /// first byte 0x00, the DSI's 0x01. + static func dvdCellBaseSeconds(pci data: UnsafeBufferPointer) -> Double? { + guard data.count >= 0x1D, data[0] == 0x00 else { return nil } + let startPTS = (UInt32(data[0x0D]) << 24) | (UInt32(data[0x0E]) << 16) | (UInt32(data[0x0F]) << 8) | UInt32(data[0x10]) + func bcd(_ b: UInt8) -> Double { Double(Int(b >> 4) * 10 + Int(b & 0x0F)) } + let frameByte = data[0x1C] + let fps: Double = (frameByte >> 6) == 1 ? 25 : ((frameByte >> 6) == 3 ? 30000.0 / 1001.0 : 0) + let elapsed = bcd(data[0x19]) * 3600 + bcd(data[0x1A]) * 60 + bcd(data[0x1B]) + + (fps > 0 ? bcd(frameByte & 0x3F) / fps : 0) + return Double(startPTS) / 90000 - elapsed + } + /// One AVSEEK_FLAG_BYTE positioning seek + flush. Shared by the estimate probe loop. private func byteSeek(to byteTarget: Int64) -> Bool { accessLock.lock() diff --git a/Sources/AetherEngine/Demuxer/HeldSourceConnection.swift b/Sources/AetherEngine/Demuxer/HeldSourceConnection.swift index 87e9623c7..2b7b27496 100644 --- a/Sources/AetherEngine/Demuxer/HeldSourceConnection.swift +++ b/Sources/AetherEngine/Demuxer/HeldSourceConnection.swift @@ -121,7 +121,7 @@ final class HeldSourceConnection: @unchecked Sendable { self.generation = generation self.ticket = ticket self.delegate = delegate - self.queue = DispatchQueue(label: "aether.avio.held.\(label)") + self.queue = DispatchQueue(label: "aether.avio.held.\(label)", qos: .userInitiated) } var isCancelled: Bool { @@ -228,7 +228,7 @@ final class HeldSourceConnection: @unchecked Sendable { configuration.timeoutIntervalForResource = .greatestFiniteMagnitude let session = URLSession(configuration: configuration, delegate: EngineTLS.sessionDelegate, - delegateQueue: nil) + delegateQueue: AVIOReader.makePlaybackDelegateQueue()) let task = session.streamTask(withHostName: host, port: port) stateLock.lock() @@ -448,7 +448,7 @@ extension HeldSourceConnection { host: String, port: Int, secure: Bool, - offset: Int64, + offset: Int64?, extraHeaders: [String: String], userAgent: String?) throws -> Data { // Audit DMX-4: the path goes on the wire as the URL spells it. `URL.path` is decoded, so @@ -463,12 +463,13 @@ extension HeldSourceConnection { // A non-default port belongs in Host, since the origin may route on it. let hostHeader = (secure && port == 443) || (!secure && port == 80) ? hostName : "\(hostName):\(port)" + // A nil offset is a whole-resource GET (AE#732's segment fetches), which carries no Range. var lines = ["GET \(path) HTTP/1.1", - "Host: \(hostHeader)", - "Range: bytes=\(offset)-", - "Accept: */*", - "Accept-Encoding: identity", - "Connection: keep-alive"] + "Host: \(hostHeader)"] + if let offset { lines.append("Range: bytes=\(offset)-") } + lines += ["Accept: */*", + "Accept-Encoding: identity", + "Connection: keep-alive"] if let userAgent { lines.append("User-Agent: \(userAgent)") } // The caller's headers win: they carry the source's authentication, and a duplicate of a // header set above would be sent twice. diff --git a/Sources/AetherEngine/Demuxer/OriginRequestBudget.swift b/Sources/AetherEngine/Demuxer/OriginRequestBudget.swift index 443e41af3..16a2f86a7 100644 --- a/Sources/AetherEngine/Demuxer/OriginRequestBudget.swift +++ b/Sources/AetherEngine/Demuxer/OriginRequestBudget.swift @@ -92,6 +92,30 @@ final class OriginRequestBudget: @unchecked Sendable { let granted: Bool } + /// A finite request ends on the delegate queue, before its synchronous caller resumes. + /// Cancellation/early return may race that callback, so the ticket is returned only once. + final class Lease: @unchecked Sendable { + private let lock = NSLock() + private let budget: OriginRequestBudget + private var ticket: Ticket? + + init(_ ticket: Ticket?, budget: OriginRequestBudget = .shared) { + self.ticket = ticket + self.budget = budget + } + + deinit { release() } + + func release() { + let held = lock.withLock { + let held = ticket + ticket = nil + return held + } + budget.release(held) + } + } + struct Snapshot { var inflight: Int var peakInflight: Int @@ -376,7 +400,10 @@ final class OriginRequestBudget: @unchecked Sendable { /// token, no slot, and its place in the FIFO given up, so it cannot take what the next session /// is waiting for. nil is also what an unkeyable URL returns, so a caller that passes /// `shouldAbort` tells the two apart by asking its own abort state. + /// `allowOvercommit: false` returns nil when the wait budget is spent. Metadata discovery + /// uses this mode so its fallback requests cannot exceed an origin's known concurrency limit. func acquire(for url: URL, label: String, timeout: TimeInterval, + allowOvercommit: Bool = true, shouldAbort: (() -> Bool)? = nil) -> Ticket? { guard let raw = Self.originKey(for: url) else { return nil } @@ -391,6 +418,7 @@ final class OriginRequestBudget: @unchecked Sendable { case .passed(let milliseconds): pacedMs = milliseconds case .spent: + guard allowOvercommit else { return nil } // The pacer alone spent the caller's budget. Proceed uncounted-for, the same answer the // slot timeout below gives, and stay honest about being on the link. lock.lock() @@ -472,7 +500,16 @@ final class OriginRequestBudget: @unchecked Sendable { var timedOut = origins[keyNow] ?? OriginState() if let i = timedOut.waiters.firstIndex(where: { $0 === semaphore }) { timedOut.waiters.remove(at: i) + if !allowOvercommit { + origins[keyNow] = timedOut + lock.unlock() + return nil + } timedOut.inflight += 1 // proceeding anyway; stay honest about what is on the link + } else if !allowOvercommit { + // The release raced the deadline and already granted this caller a real slot. + lock.unlock() + return Ticket(key: raw, label: label, waitedMs: waitedMs, granted: true) } // The `else` is the race where a release signalled us between the timeout firing and this // lock: it already removed us from the queue AND counted the slot in, so there is nothing diff --git a/Sources/AetherEngine/Demuxer/SourcePrewarmFetcher.swift b/Sources/AetherEngine/Demuxer/SourcePrewarmFetcher.swift index b56720a0e..4f3bd41f9 100644 --- a/Sources/AetherEngine/Demuxer/SourcePrewarmFetcher.swift +++ b/Sources/AetherEngine/Demuxer/SourcePrewarmFetcher.swift @@ -35,7 +35,7 @@ enum SourcePrewarmFetcher { private static let session: URLSession = URLSession( configuration: AVIOReader.makeSessionConfig(), delegate: EngineTLS.sessionDelegate, - delegateQueue: nil) + delegateQueue: AVIOReader.makePlaybackDelegateQueue()) /// One warm at a time, process-wide. /// diff --git a/Sources/AetherEngine/Demuxer/SourceSizeProbeScope.swift b/Sources/AetherEngine/Demuxer/SourceSizeProbeScope.swift new file mode 100644 index 000000000..a82711b83 --- /dev/null +++ b/Sources/AetherEngine/Demuxer/SourceSizeProbeScope.swift @@ -0,0 +1,88 @@ +import Foundation + +/// One file-size discovery, including its delayed workers and requests. All mutable state is +/// condition-guarded. Workers run on owned threads because the demuxer's open API is synchronous. +/// A result cancels sibling requests; join waits for their tickets to be returned before playback +/// can start another request. The monotonic deadline covers both slot and response waits. +final class SourceSizeProbeScope: @unchecked Sendable { + private let condition = NSCondition() + private let deadline: DispatchTime + private var stopped = false + private var size: Int64 = -1 + private var workers = 0 + private var tasks: [ObjectIdentifier: URLSessionTask] = [:] + + init(timeout: TimeInterval) { deadline = .now() + timeout } + + var remaining: TimeInterval { + let now = DispatchTime.now().uptimeNanoseconds + return deadline.uptimeNanoseconds > now + ? Double(deadline.uptimeNanoseconds - now) / 1_000_000_000 : 0 + } + + var isStopped: Bool { condition.withLock { stopped } || remaining <= 0 } + + func addWorker() { condition.withLock { workers += 1 } } + + func finishWorker() { + condition.lock() + workers -= 1 + condition.broadcast() + condition.unlock() + } + + func waitToStart(after delay: TimeInterval) -> Bool { + let until = Date(timeIntervalSinceNow: min(delay, remaining)) + condition.lock() + defer { condition.unlock() } + while !stopped && Date() < until { condition.wait(until: until) } + return !stopped && remaining > 0 + } + + func resume(_ task: URLSessionTask) -> Bool { + condition.lock() + defer { condition.unlock() } + guard !stopped, remaining > 0 else { return false } + tasks[ObjectIdentifier(task)] = task + task.resume() + return true + } + + func remove(_ task: URLSessionTask) { + _ = condition.withLock { tasks.removeValue(forKey: ObjectIdentifier(task)) } + } + + func resolve(_ candidate: Int64) { + guard candidate > 0 else { return } + condition.lock() + guard !stopped, remaining > 0 else { condition.unlock(); return } + size = candidate + stopped = true + let pending = Array(tasks.values) + condition.broadcast() + condition.unlock() + pending.forEach { $0.cancel() } + } + + func cancel() { + condition.lock() + stopped = true + let pending = Array(tasks.values) + condition.broadcast() + condition.unlock() + pending.forEach { $0.cancel() } + } + + func join(shouldAbort: () -> Bool) -> Int64 { + condition.lock() + while workers > 0 { + condition.unlock() + if shouldAbort() || remaining <= 0 { cancel() } + condition.lock() + if workers > 0 { condition.wait(until: Date(timeIntervalSinceNow: 0.05)) } + } + let result = size + condition.unlock() + return shouldAbort() ? -1 : result + } +} diff --git a/Sources/AetherEngine/Diagnostics/LiveTelemetrySampler.swift b/Sources/AetherEngine/Diagnostics/LiveTelemetrySampler.swift index 104f8e06b..febc04364 100644 --- a/Sources/AetherEngine/Diagnostics/LiveTelemetrySampler.swift +++ b/Sources/AetherEngine/Diagnostics/LiveTelemetrySampler.swift @@ -64,8 +64,6 @@ struct NativeAVFReadings: Sendable { /// the consumer cannot reach without stalling first. A decision that spends this depth needs the /// half it can actually walk; nil when no loaded range contains the playhead at all. var contiguousForwardBufferSeconds: Double? = nil - /// Sum over all access-log events, for the [LagDiag] tick-over-tick drop delta. - var droppedFramesLifetimeSum: Int = 0 /// The current variant's declared BANDWIDTH and AVERAGE-BANDWIDTH, in bits per second, from the /// latest access-log entry. The log reports an undeclared value as negative. var indicatedBitrate: Double = -1 @@ -132,7 +130,7 @@ final class LiveTelemetrySampler { /// [LagDiag] tick-over-tick state (#93 post-recovery lag diagnosis). private var lagLastClock: Double? - private var lagLastDroppedSum: Int = 0 + private var lagLastDroppedSum: Int? /// #169 tail-park end-of-media synthesis state. private var eomParkFrozenTicks: Int = 0 @@ -164,7 +162,7 @@ final class LiveTelemetrySampler { meterLedger = nil lastTickTime = nil lagLastClock = nil - lagLastDroppedSum = 0 + lagLastDroppedSum = nil eomParkFrozenTicks = 0 eomParkLastPlayhead = nil didSynthesizeEomPark = false @@ -324,7 +322,6 @@ final class LiveTelemetrySampler { readings.networkTransferredBytes, retired: engine.nativeHost?.retiredItemTransferredBytes ?? 0) readings.droppedFrameCount = Self.foldRetired( readings.droppedFrameCount, retired: engine.nativeHost?.retiredItemDroppedFrames ?? 0) - readings.droppedFramesLifetimeSum = readings.droppedFrameCount ?? 0 nativeReadings = readings droppedFrameCount = readings.droppedFrameCount networkThroughputMbps = readings.networkThroughputMbps @@ -470,8 +467,8 @@ final class LiveTelemetrySampler { let dclk = (clock.isFinite && lagLastClock != nil) ? clock - lagLastClock! : nil if clock.isFinite { lagLastClock = clock } - let droppedSum = readings.droppedFramesLifetimeSum - let dDrop = droppedSum - lagLastDroppedSum + let droppedSum = readings.droppedFrameCount + let dDrop = droppedSum.flatMap { total in lagLastDroppedSum.map { total - $0 } } lagLastDroppedSum = droppedSum let tcs: String @@ -495,7 +492,7 @@ final class LiveTelemetrySampler { + "tcs=\(tcs) rate=\(fmt2(Double(readings.rate))) wait=\(readings.reasonForWaitingToPlay ?? "-") " + "fwd=\(readings.forwardBufferSeconds.map { String(format: "%.1f", $0) } ?? "-") " + "keepUp=\(readings.isPlaybackLikelyToKeepUp ? "y" : "n") empty=\(readings.isPlaybackBufferEmpty ? "y" : "n") " - + "drop=\(droppedSum)+\(dDrop) stall=\(engine.nativeHost?.stallCount ?? 0) " + + "drop=\(droppedSum.map(String.init) ?? "-")+\(dDrop.map(String.init) ?? "-") videoFrames=unavailable stall=\(engine.nativeHost?.stallCount ?? 0) " + "ready=\((engine.nativeHost?.playerLayer.isReadyForDisplay ?? false) ? "y" : "n") " + "thermal=\(thermal) net=\(netMbps.map { String(format: "%.1f", $0) } ?? "-") " + "restarts=\(engine.producerRestartCount)", @@ -604,7 +601,6 @@ final class LiveTelemetrySampler { readings.networkTransferredBytes = Self.sessionTotal(perEntry: events.map(\.numberOfBytesTransferred)) readings.droppedFrameCount = Self.sessionTotal(perEntry: events.map(\.numberOfDroppedVideoFrames)) } - readings.droppedFramesLifetimeSum = readings.droppedFrameCount ?? 0 let now = player.currentTime().seconds readings.currentTimeSeconds = now diff --git a/Sources/AetherEngine/Diagnostics/VideoFrameProgress.swift b/Sources/AetherEngine/Diagnostics/VideoFrameProgress.swift new file mode 100644 index 000000000..25d93c890 --- /dev/null +++ b/Sources/AetherEngine/Diagnostics/VideoFrameProgress.swift @@ -0,0 +1,142 @@ +import Foundation + +/// A progressing audio/item clock is not proof of a progressing video presentation. +/// The caller excludes PiP (its inline layer may legitimately be unready), external +/// playback, seeks, hidden surfaces and source starvation before offering an observation. +struct VideoPresentationProgress { + enum Action: String { case nudge, reload } + private var suspectClock: Double? + private var suspectAt: Double? + private var healthyAt: Double? + private var lastClock: Double? + private var lastObservation: Double? + private(set) var attempts = 0 + + mutating func observe(clock: Double, now: Double, eligible: Bool, + missingVideo: Bool, frameDuration: Double?, + hasHealthyVideo: Bool = true) -> Action? { + defer { lastClock = clock; lastObservation = now } + guard eligible, clock.isFinite, now.isFinite else { + suspectClock = nil; suspectAt = nil; healthyAt = nil + return nil + } + if let lastClock, let lastObservation, + clock < lastClock || clock - lastClock > 1 || now - lastObservation > 1 { + suspectClock = nil; suspectAt = nil; healthyAt = nil + } + guard missingVideo else { + suspectClock = nil; suspectAt = nil + guard hasHealthyVideo else { healthyAt = nil; return nil } + if healthyAt == nil { healthyAt = now } + // A momentary ready flag after a seek does not buy unlimited repair attempts. + if now - (healthyAt ?? now) >= 5 { attempts = 0 } + return nil + } + healthyAt = nil + if suspectAt == nil { suspectAt = now; suspectClock = clock } + let duration = frameDuration.flatMap { $0.isFinite && $0 > 0 ? $0 : nil } ?? 0 + let threshold = Swift.max(3, 6 * duration) + guard attempts < 2, now - (suspectAt ?? now) >= threshold, + clock - (suspectClock ?? clock) >= threshold * 0.8 else { return nil } + attempts += 1 + suspectAt = nil; suspectClock = nil + return attempts == 1 ? .nudge : .reload + } +} + +/// Decoded-output observations, not a count of frames physically displayed by AVPlayerLayer. +struct VideoFrameProgress { + enum Event: Equatable { + case began(age: Double, clockAdvance: Double) + case ended(age: Double) + } + private(set) var samples = 0 + private(set) var frameTime: Double? + private var changedAt: Double? + private var clockAtChange: Double? + private var lastClock: Double? + private var gapReported = false + private(set) var recoveryPending = false + + mutating func beginRecovery() { recoveryPending = samples >= 3 || recoveryPending } + + mutating func reset(preservingRecovery: Bool = false) { + let pending = preservingRecovery && recoveryPending + self = Self() + recoveryPending = pending + } + + func age(at now: Double) -> Double? { changedAt.map { Swift.max(0, now - $0) } } + + /// Require both a progressing clock and fresh observations. A suspended sampler + /// or an output which never produced pictures cannot diagnose a stalled decoder. + func isStalled(at now: Double, lastSampleAt: Double?, frameDuration: Double?) -> Bool { + guard samples >= 3 || recoveryPending, let lastSampleAt, now >= lastSampleAt, + now - lastSampleAt <= 0.25, let changedAt, let clockAtChange, let lastClock else { return false } + let duration = frameDuration.flatMap { $0.isFinite && $0 > 0 ? $0 : nil } ?? 0 + let threshold = Swift.max(0.35, 3 * duration) + return now - changedAt >= threshold && lastClock - clockAtChange >= threshold * 0.8 + } + + mutating func observe(frame: Double?, clock: Double, now: Double, + eligible: Bool, frameDuration: Double?) -> Event? { + guard eligible, clock.isFinite, now.isFinite else { reset(); return nil } + if let lastClock, clock < lastClock || clock - lastClock > 1 { + reset() // seek/item swap or a delayed sampling task, never a decoder verdict + } + lastClock = clock + if let frame, frame.isFinite, frame != frameTime { + let age = changedAt.map { Swift.max(0, now - $0) } + let recovered = gapReported + recoveryPending = false + samples += 1; frameTime = frame; changedAt = now; clockAtChange = clock + gapReported = false + return recovered ? .ended(age: age ?? 0) : nil + } + // An internal repair can briefly pause/detach the output. Preserve its verified + // stall, but start a fresh grace period on resumed observation, never while waiting. + if recoveryPending, changedAt == nil { changedAt = now; clockAtChange = clock } + guard samples >= 3 || recoveryPending, let changedAt, let clockAtChange else { return nil } + let age = Swift.max(0, now - changedAt) + let advance = clock - clockAtChange + let duration = frameDuration.flatMap { $0.isFinite && $0 > 0 ? $0 : nil } ?? 0 + let threshold = Swift.max(0.35, 3 * duration) + guard !gapReported, age >= threshold, advance >= threshold * 0.8 else { return nil } + gapReported = true + return .began(age: age, clockAdvance: advance) + } +} + +/// Compressed packet cadence after replay admission. A gap is evidence, not a playback command. +struct VideoPacketProgress { + struct Gap { + let previous: Double + let seconds: Double + let cadence: Double + } + private var last: Double? + private var intervals: [Double] = [] + + var cadence: Double? { + let ordered = intervals.sorted() + return ordered.isEmpty ? nil : ordered[ordered.count / 2] + } + + mutating func observe(_ seconds: Double) -> Gap? { + guard seconds.isFinite else { return nil } + defer { last = seconds } + guard let previous = last else { return nil } + let delta = seconds - previous + guard delta > 0 else { + if delta < 0 { intervals.removeAll(keepingCapacity: true) } + return nil + } + let cadence = self.cadence + if intervals.count >= 4, let cadence, delta > Swift.max(0.25, 5 * cadence) { + return Gap(previous: previous, seconds: delta, cadence: cadence) + } + intervals.append(delta) + if intervals.count > 8 { intervals.removeFirst() } + return nil + } +} diff --git a/Sources/AetherEngine/Disc/BDTitleSelector.swift b/Sources/AetherEngine/Disc/BDTitleSelector.swift index 2e919026f..4cad42faf 100644 --- a/Sources/AetherEngine/Disc/BDTitleSelector.swift +++ b/Sources/AetherEngine/Disc/BDTitleSelector.swift @@ -49,7 +49,8 @@ enum BDTitleSelector { chapters: chapters, bdClipIDs: playlist.clipIDs, bdClipSubtractTicks: clipSubtractTicks(playlist), bdClipCumulativeBeforeTicks: playlist.cumulativeBefore.count == playlist.clipIDs.count ? playlist.cumulativeBefore : nil, - streamLanguages: playlist.streamLanguages) + streamLanguages: playlist.streamLanguages, + bdClipInTimes: playlist.inTimes.count == playlist.clipIDs.count ? playlist.inTimes : nil) } } diff --git a/Sources/AetherEngine/Disc/ConcatIOReader.swift b/Sources/AetherEngine/Disc/ConcatIOReader.swift index 7318e4196..6aa7ed71e 100644 --- a/Sources/AetherEngine/Disc/ConcatIOReader.swift +++ b/Sources/AetherEngine/Disc/ConcatIOReader.swift @@ -90,3 +90,9 @@ final class ConcatIOReader: IOReader, @unchecked Sendable { extents: extents.map { (offset: $0.offset, length: $0.length) }) } } + +extension ConcatIOReader: SourceTransferCounting { + /// The base reader's count: the extent map adds no transfer of its own, and over a remote disc + /// image every byte it serves was pulled by the base. + var sourceBytesFetched: Int64 { (base as? SourceTransferCounting)?.sourceBytesFetched ?? 0 } +} diff --git a/Sources/AetherEngine/Disc/DVDIFOParser.swift b/Sources/AetherEngine/Disc/DVDIFOParser.swift index a8c5c7134..eb4673425 100644 --- a/Sources/AetherEngine/Disc/DVDIFOParser.swift +++ b/Sources/AetherEngine/Disc/DVDIFOParser.swift @@ -79,7 +79,11 @@ enum DVDIFOParser { /// Byte offset of the title set's main program chain: the longest PGC across the VTS_PGCIT search /// pointers. nil when the bytes are not a recognizable VTSI or the PGCIT is malformed. Shared, so the /// duration, the chapters and the stream-language tables all describe the same chain. - private static func mainPGCOffset(_ data: [UInt8]) -> Int? { + private static func mainPGCOffset(_ data: [UInt8]) -> Int? { mainPGC(data)?.offset } + + /// The main program chain's byte offset and its index among the VTS_PGCIT search pointers, which is + /// also its index in the time map table (VTS_TMAPT). + private static func mainPGC(_ data: [UInt8]) -> (offset: Int, index: Int)? { guard data.count >= vtsPgcitPointerOffset + 4, Array(data[0..<12]) == vtsMagic else { return nil } let pgcitSector = be32(data, vtsPgcitPointerOffset) @@ -89,6 +93,7 @@ enum DVDIFOParser { let nrSrp = be16(data, pgcitBase) guard nrSrp > 0 else { return nil } var bestOffset = -1 + var bestIndex = -1 var bestTicks: UInt64 = 0 for i in 0..= 0, pgcOffset + pgcHeaderLength <= data.count else { continue } let ticks = dvdTimeTicks(data, pgcOffset + pgcPlaybackTimeOffset) - if bestOffset < 0 || ticks > bestTicks { bestOffset = pgcOffset; bestTicks = ticks } + if bestOffset < 0 || ticks > bestTicks { bestOffset = pgcOffset; bestIndex = i; bestTicks = ticks } } - return bestOffset >= 0 ? bestOffset : nil + return bestOffset >= 0 ? (bestOffset, bestIndex) : nil + } + + // MARK: - Main PGC cells and time map (cell-folded timeline, byte seeks) + + /// One cell of the main program chain: its first and last sector in the title VOBs (VTSTT_VOBS, + /// numbered from the start of VTS_NN_1.VOB), its playback time, and whether it sits in an angle block. + struct Cell: Sendable, Equatable { + let firstSector: Int + let lastSector: Int + let durationSec: Double + let inAngleBlock: Bool + } + + /// The VTS_TMAPT sector pointer in the VTSI. + private static let vtsTmaptiPointerOffset = 0xD4 + + /// The main PGC's cells in playback order; nil when the IFO is not readable that far. + static func parseMainPGCCells(_ data: [UInt8]) -> [Cell]? { + guard let pgc = mainPGC(data) else { return nil } + let nrCells = Int(data[pgc.offset + pgcNrCellsOffset]) + guard nrCells > 0 else { return nil } + let cellTable = pgc.offset + be16(data, pgc.offset + pgcCellPlaybackOffsetField) + guard cellTable + nrCells * cellPlaybackEntrySize <= data.count else { return nil } + return (0..> 4) & 0x3 + return Cell(firstSector: be32(data, e + 8), lastSector: be32(data, e + 20), + durationSec: dvdTimeSeconds(data, e + pgcPlaybackTimeOffset), inAngleBlock: blockType == 1) + } + } + + /// The main PGC's time map (VTS_TMAPT): entry i is the first sector, in VTSTT_VOBS, of the VOBU playing + /// at title time (i + 1) x `unitSec`. A disc does not have to carry one; nil then. + static func parseMainTimeMap(_ data: [UInt8]) -> (unitSec: Double, sectors: [Int])? { + guard let pgc = mainPGC(data), data.count >= vtsTmaptiPointerOffset + 4 else { return nil } + let tmaptiSector = be32(data, vtsTmaptiPointerOffset) + guard tmaptiSector > 0 else { return nil } + let base = tmaptiSector * sectorSize + guard base + 8 <= data.count else { return nil } + let count = be16(data, base) + guard pgc.index < count, base + 8 + (pgc.index + 1) * 4 <= data.count else { return nil } + let tmap = base + be32(data, base + 8 + pgc.index * 4) + guard tmap + 4 <= data.count else { return nil } + let unit = Int(data[tmap]) + let entries = be16(data, tmap + 2) + guard unit > 0, entries > 0, tmap + 4 + entries * 4 <= data.count else { return nil } + // The top bit flags a discontinuity; the other 31 are the sector. + return (Double(unit), (0.. IOReader? + + /// The `.mpls` file name of the title to play (`00800.mpls`), when the host already knows it. The + /// engine then reads only that playlist and publishes it as the only title; nil reads every playlist + /// and selects the main title by the engine's own rules, as on an ISO. + var preferredPlaylist: String? { get } +} + +/// A Blu-ray folder over HTTP: one URL per file, each read through its own range reader, so an origin +/// serves the disc as plain files and never remuxes it. +public final class HTTPDiscDirectoryReader: DiscDirectoryReader { + public struct File: Sendable { + /// Path relative to the disc root, `/`-separated (`BDMV/PLAYLIST/00800.mpls`). + public let path: String + /// The file's exact size in bytes. + public let size: Int64 + /// Where the file's bytes are served. The origin must honour HTTP `Range`. + public let url: URL + + public init(path: String, size: Int64, url: URL) { + self.path = path + self.size = size + self.url = url + } + } + + private let files: [File] + private let httpHeaders: [String: String] + public let preferredPlaylist: String? + + /// `httpHeaders` ride on every range request to every file. + public init(files: [File], preferredPlaylist: String? = nil, httpHeaders: [String: String] = [:]) { + self.files = files + self.preferredPlaylist = preferredPlaylist + self.httpHeaders = httpHeaders + } + + public var discFiles: [(path: String, size: Int64)] { files.map { ($0.path, $0.size) } } + + public func openDiscFile(_ path: String) -> IOReader? { + guard let file = files.first(where: { $0.path.caseInsensitiveCompare(path) == .orderedSame }) else { return nil } + // A small file (a playlist) is read whole, so whether its origin honours ranges does not matter and + // the listed size can stand in for the range probe: a folder holds a few hundred playlists, and the + // probe doubled the requests recognition made. A clip keeps the probe, which is what refuses an + // origin that would answer a range with the whole file. + let small = file.size > 0 && file.size <= DiscReader.maxSmallFileBytes + return HTTPDiscIOReader(url: file.url, extraHeaders: httpHeaders, knownSize: small ? file.size : nil) + } + + public func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { -1 } + public func seek(offset: Int64, whence: Int32) -> Int64 { -1 } + public func close() {} + + /// The side readers (subtitles, scrub previews) need a cursor of their own: the same listing again, + /// whose files open on demand. + public func makeIndependentReader() -> IOReader? { + HTTPDiscDirectoryReader(files: files, preferredPlaylist: preferredPlaylist, httpHeaders: httpHeaders) + } +} + +/// Independent files presented as one contiguous, seekable byte stream: the clips of a title in a disc +/// folder. Files open on demand and only the most recently used few stay open, because a multi-clip +/// title can run to dozens of clips and needs no more than one connection at a time to play. +final class MultiFileConcatIOReader: IOReader, SourceTransferCounting, @unchecked Sendable { + struct Segment { + let path: String + let size: Int64 + } + + /// The current clip, plus room for a read across a clip boundary and a seek back into the last one. + static let openLimit = 3 + + private let segments: [Segment] + /// Each segment's first byte in the concatenated stream, parallel to `segments`. + private let starts: [Int64] + private let totalLength: Int64 + private let opener: @Sendable (String) -> IOReader? + /// Serializes `read`, `seek` and `close`, and is held across the network. `cancel` never takes it: + /// it exists to unblock a read parked under it. + private let ioLock = NSLock() + private var position: Int64 = 0 + /// Guards the fields below, and is only ever held briefly. + private let stateLock = NSLock() + /// Open readers by segment index, and their use order: the least recently used one closes first. + private var open: [Int: IOReader] = [:] + private var recent: [Int] = [] + /// Bytes fetched by readers already closed, so the transfer count survives their eviction. + private var retiredSourceBytes: Int64 = 0 + /// Bumped by `cancel`, so a file that was still opening when it arrived is cancelled once it exists. + private var cancelGeneration = 0 + + init(segments: [Segment], opener: @escaping @Sendable (String) -> IOReader?) { + self.segments = segments + self.opener = opener + var cursor: Int64 = 0 + var starts: [Int64] = [] + for segment in segments { + starts.append(cursor) + cursor += max(0, segment.size) + } + self.starts = starts + self.totalLength = cursor + } + + var sourceBytesFetched: Int64 { + stateLock.lock(); defer { stateLock.unlock() } + return retiredSourceBytes + open.values.reduce(0) { $0 + Self.fetched($1) } + } + + private static func fetched(_ reader: IOReader) -> Int64 { + (reader as? SourceTransferCounting)?.sourceBytesFetched ?? 0 + } + + /// The reader of segment `index`, opening it if needed. Called with `ioLock` held; the open itself + /// (a range probe on HTTP) runs outside `stateLock`, so `cancel` never waits for it. + private func reader(for index: Int) -> IOReader? { + stateLock.lock() + if let existing = open[index] { + recent.removeAll { $0 == index } + recent.append(index) + stateLock.unlock() + return existing + } + let generation = cancelGeneration + stateLock.unlock() + + guard let fresh = opener(segments[index].path) else { return nil } + + stateLock.lock() + let cancelledWhileOpening = cancelGeneration != generation + open[index] = fresh + recent.append(index) + var evicted: [IOReader] = [] + while recent.count > Self.openLimit { + if let gone = open.removeValue(forKey: recent.removeFirst()) { + retiredSourceBytes += Self.fetched(gone) + evicted.append(gone) + } + } + stateLock.unlock() + evicted.forEach { $0.close() } + if cancelledWhileOpening { fresh.cancel() } + return fresh + } + + func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { + guard let buffer, size > 0 else { return -1 } + ioLock.lock(); defer { ioLock.unlock() } + guard position < totalLength else { return 0 } + var index = starts.lastIndex { $0 <= position } ?? 0 + let toRead = min(Int64(size), totalLength - position) + var got: Int64 = 0 + while got < toRead, index < segments.count { + let intra = position + got - starts[index] + let want = min(toRead - got, segments[index].size - intra) + if want <= 0 { + index += 1 + continue + } + guard let segmentReader = reader(for: index), + segmentReader.seek(offset: intra, whence: SEEK_SET) >= 0 else { + return got > 0 ? Int32(got) : -1 + } + var chunk: Int64 = 0 + while chunk < want { + let n = segmentReader.read(buffer.advanced(by: Int(got + chunk)), size: Int32(want - chunk)) + if n == 0 { break } + if n < 0 { return got + chunk > 0 ? Int32(got + chunk) : -1 } + chunk += Int64(n) + } + got += chunk + // A file shorter than its listed size: return what arrived, the next read resumes from there. + if chunk < want { break } + index += 1 + } + position += got + return Int32(got) + } + + func seek(offset: Int64, whence: Int32) -> Int64 { + if whence == 65536 { return totalLength } // AVSEEK_SIZE + ioLock.lock(); defer { ioLock.unlock() } + let target: Int64 + switch whence { + case SEEK_SET: target = offset + case SEEK_CUR: target = position + offset + case SEEK_END: target = totalLength + offset + default: return -1 + } + guard target >= 0 else { return -1 } + position = min(target, totalLength) + return position + } + + /// Waits for a read in flight, as before the split, so no read is left holding a closed file. + func close() { + ioLock.lock(); defer { ioLock.unlock() } + stateLock.lock() + let readers = Array(open.values) + retiredSourceBytes += readers.reduce(0) { $0 + Self.fetched($1) } + open.removeAll() + recent.removeAll() + stateLock.unlock() + readers.forEach { $0.close() } + } + + /// Passed on to the open file readers, so a stop unblocks a read parked on the network. It takes + /// only `stateLock`: the read it is meant to unblock holds `ioLock` for as long as it is parked. + func cancel() { + stateLock.lock() + cancelGeneration &+= 1 + let readers = Array(open.values) + stateLock.unlock() + readers.forEach { $0.cancel() } + } + + func makeIndependentReader() -> IOReader? { + MultiFileConcatIOReader(segments: segments, opener: opener) + } + + /// Already the title's transport stream; there is no disc left to recognize in it. + var discImageProbeEnabled: Bool { false } +} + +extension DiscReader { + /// A Blu-ray folder: the image path (`wrapBluRay`) with files in place of UDF extents. The playlist scan + /// and the clip assembly are the same bounded code, so a folder cannot make recognition do more than + /// an image can (audit NET-103). + static func wrapBluRayFolder(_ folder: DiscDirectoryReader, selectTitleID: Int?) -> DiscInfo? { + let files = folder.discFiles + let byPath = Dictionary(files.map { ($0.path.uppercased(), $0) }, uniquingKeysWith: { first, _ in first }) + func file(_ path: String) -> (path: String, size: Int64)? { byPath[path.uppercased()] } + + var playlists = files.filter { $0.path.uppercased().hasPrefix("BDMV/PLAYLIST/") } + if let preferred = folder.preferredPlaylist { + if let hit = file("BDMV/PLAYLIST/\(preferred)") { + playlists = [hit] + } else { + EngineLog.emit("[disc] BDMV folder: preferred playlist \(preferred) is not in the listing; scanning all", category: .demux) + } + } + let parsed = scanPlaylists(playlists, + name: { $0.path.lowercased() }, + extents: { [(offset: 0, length: $0.size)] }, + read: { entry, extents in + guard let reader = folder.openDiscFile(entry.path) else { return [] } + defer { reader.close() } + return readAll(reader, extents) + }) + let titles = BDTitleSelector.enumerateTitles(parsed) + guard !titles.isEmpty else { + EngineLog.emit("[disc] BDMV folder: no parseable .mpls (\(playlists.count) PLAYLIST entries, \(parsed.count) parsed)", category: .demux) + return nil + } + let selectedIndex = selectTitleID.flatMap { titles.indices.contains($0) ? $0 : nil } ?? 0 + let selected = titles[selectedIndex] + let assembled = assembleBluRayTitle( + clipIDs: selected.bdClipIDs ?? [], + subtractTicks: selected.bdClipSubtractTicks ?? [], + cumulativeBeforeTicks: selected.bdClipCumulativeBeforeTicks ?? [], + piecesOfClip: { clip in + guard let stream = file("BDMV/STREAM/\(clip).m2ts"), stream.size > 0 else { return nil } + return [MultiFileConcatIOReader.Segment(path: stream.path, size: stream.size)] + }, + length: { (segment: MultiFileConcatIOReader.Segment) in segment.size }) + let segments = assembled.pieces + var clipTimeline = assembled.clipTimeline + guard !segments.isEmpty else { + EngineLog.emit("[disc] BDMV folder: title \(selectedIndex) clips=\(selected.bdClipIDs ?? []) resolved no file in BDMV/STREAM", category: .demux) + return nil + } + // As on an image: a single clip, or clips that already continue each other, need no folding. + if clipTimeline.count < 2 || !clipTimeline.contains(where: { $0.predictedShiftSec != 0 }) { + clipTimeline = [] + } + let totalBytes = segments.reduce(Int64(0)) { $0 + $1.size } + EngineLog.emit("[disc] Blu-ray folder recognized: \(titles.count) title(s), selected \(selectedIndex) clips=\(selected.bdClipIDs ?? []) files=\(segments.count) bytes=\(totalBytes) clipSpans=\(clipTimeline.count) preferred=\(folder.preferredPlaylist ?? "-")", category: .demux) + let seekTable = buildSeekTable(title: selected, resolved: assembled.resolved) { clip in + guard let info = file("BDMV/CLIPINF/\(clip).clpi"), info.size > 0, + let reader = folder.openDiscFile(info.path) else { return nil } + defer { reader.close() } + return readAll(reader, [(offset: 0, length: info.size)]) + } + return DiscInfo(reader: MultiFileConcatIOReader(segments: segments, opener: { folder.openDiscFile($0) }), + formatHint: "mpegts", titles: titles, selectedTitleIndex: selectedIndex, + clipTimeline: clipTimeline, seekTable: seekTable) + } +} diff --git a/Sources/AetherEngine/Disc/DiscInspector.swift b/Sources/AetherEngine/Disc/DiscInspector.swift index ac1a303b1..0a45a117d 100644 --- a/Sources/AetherEngine/Disc/DiscInspector.swift +++ b/Sources/AetherEngine/Disc/DiscInspector.swift @@ -119,6 +119,13 @@ enum DiscInspector { } else { kind = .udfNoTitle } + } else if let videoTS = root.first(where: { $0.isDir && $0.name.uppercased() == "VIDEO_TS" }) { + // A DVD-Video image with no ISO9660 bridge, as `DiscReader.wrapUDFDVD` reads it. + let names = ((try? udf.list(path: [videoTS.name])) ?? []).filter { !$0.isDir }.map(\.name) + d.dvdVOBFiles = names + let groups = DVDTitleSelector.enumerateTitleVOBGroups( + names.map { DiscFile(name: $0, startSector: 0, length: 1) }) + kind = groups.isEmpty ? .udfNoBDMV : .dvdVideo } else { kind = .udfNoBDMV } diff --git a/Sources/AetherEngine/Disc/DiscMetadata.swift b/Sources/AetherEngine/Disc/DiscMetadata.swift index 96cc4957d..2424ca3a4 100644 --- a/Sources/AetherEngine/Disc/DiscMetadata.swift +++ b/Sources/AetherEngine/Disc/DiscMetadata.swift @@ -78,13 +78,17 @@ struct DiscTitle: Sendable, Equatable { /// happens to reach it (#651). Empty when the IFO declares none, nil when it is unreadable: only a /// title whose IFO was read gets the short probe, since only then is nothing left to discover. let dvdSubpictureStreamIDs: [Int]? + /// Blu-ray: each play item's `in_time` (45 kHz, on its clip's own clock), parallel to `bdClipIDs`. + /// A seek by the clips' EP maps turns title time back into clip time with it (`DiscSeekTable`). + let bdClipInTimes: [UInt64]? init(id: Int, durationTicks: UInt64, chapters: [DiscChapter] = [], bdClipIDs: [String]? = nil, bdClipSubtractTicks: [Int64]? = nil, bdClipCumulativeBeforeTicks: [UInt64]? = nil, dvdVTSN: Int? = nil, dvdTitleNumber: Int? = nil, streamLanguages: [Int: String] = [:], - dvdSubpictureStreamIDs: [Int]? = nil) { + dvdSubpictureStreamIDs: [Int]? = nil, + bdClipInTimes: [UInt64]? = nil) { self.id = id self.durationTicks = durationTicks self.chapters = chapters @@ -95,6 +99,7 @@ struct DiscTitle: Sendable, Equatable { self.dvdTitleNumber = dvdTitleNumber self.streamLanguages = streamLanguages self.dvdSubpictureStreamIDs = dvdSubpictureStreamIDs + self.bdClipInTimes = bdClipInTimes } } @@ -137,6 +142,21 @@ extension ClipSpan { /// back so its content continues right after all earlier clips' presentation duration, anchored to clip 0's /// observed base. Using the observed (already 33-bit-unwrapped by the demuxer) base instead of the MPLS /// `inTime` field is what makes it correct when a clip's STC base crosses the 32-bit `inTime` wrap (~95443s). +/// A DVD title's time map: the byte, in the concatenated title VOBs, of the VOBU playing at every +/// `unitSec` of title time. Entry i is at (i + 1) x `unitSec`; the first unit seeks to the title start. +struct DVDTimeMap: Sendable, Equatable { + let unitSec: Double + let titleStartByte: Int64 + let byteOffsets: [Int64] + + /// The byte of the VOBU at or before `t` seconds of title time. + func byteOffset(forTitleSeconds t: Double) -> Int64 { + let i = Int((max(0, t) / unitSec).rounded(.down)) - 1 + guard i >= 0, !byteOffsets.isEmpty else { return titleStartByte } + return byteOffsets[min(i, byteOffsets.count - 1)] + } +} + enum ClipFold { static func offsetSeconds(observedBaseSec: Double, base0Sec: Double, cumulativeBeforeSec: Double) -> Double { observedBaseSec - base0Sec - cumulativeBeforeSec @@ -177,9 +197,16 @@ struct DiscInfo: Sendable { /// Per-clip presentation-offset spans for the SELECTED multi-clip Blu-ray title, sorted by /// `concatByteStart`. Empty for single-clip / DVD / non-disc sources (Demuxer normalization no-ops). let clipTimeline: [ClipSpan] + /// The selected Blu-ray title's seek table from its clips' EP maps; nil for DVD, or when a clip has + /// no readable CLPI (seeks then search by timestamp). + let seekTable: DiscSeekTable? + /// The selected DVD title's time map (VTS_TMAPT); nil for Blu-ray and for a disc without one. + let dvdTimeMap: DVDTimeMap? init(reader: IOReader, formatHint: String, titles: [DiscTitle], selectedTitleIndex: Int, - clipTimeline: [ClipSpan] = []) { + clipTimeline: [ClipSpan] = [], seekTable: DiscSeekTable? = nil, dvdTimeMap: DVDTimeMap? = nil) { + self.seekTable = seekTable + self.dvdTimeMap = dvdTimeMap self.reader = reader self.formatHint = formatHint self.titles = titles diff --git a/Sources/AetherEngine/Disc/DiscReader.swift b/Sources/AetherEngine/Disc/DiscReader.swift index 1b77a1f44..5b0aa7de1 100644 --- a/Sources/AetherEngine/Disc/DiscReader.swift +++ b/Sources/AetherEngine/Disc/DiscReader.swift @@ -33,8 +33,10 @@ enum DiscReader { /// Emits `.demux` diagnostics once the UDF anchor is confirmed so a disc image /// that fails recognition is debuggable (it would otherwise fall back to a raw /// FFmpeg open that reports a bare INVALIDDATA). Non-disc sources stay silent. - static func wrapBluRay(_ reader: IOReader, selectTitleID: Int? = nil, cacheKey: String? = nil) throws -> DiscInfo? { - guard looksLikeUDF(reader) else { return nil } + /// `udfAnchorChecked`: the caller has already found the UDF anchor, so it is not read again. + static func wrapBluRay(_ reader: IOReader, selectTitleID: Int? = nil, cacheKey: String? = nil, + udfAnchorChecked: Bool = false) throws -> DiscInfo? { + guard udfAnchorChecked || looksLikeUDF(reader) else { return nil } EngineLog.emit("[disc] UDF anchor present; attempting Blu-ray BDMV", category: .demux) let udf: UDFReader do { udf = try UDFReader(reader: reader) } @@ -80,12 +82,18 @@ enum DiscReader { } let totalBytes = allExtents.reduce(Int64(0)) { $0 + max(0, $1.length) } EngineLog.emit("[disc] Blu-ray recognized: \(titles.count) title(s), selected \(selectedIndex) clips=\(selected.bdClipIDs ?? []) m2ts-extents=\(allExtents.count) bytes=\(totalBytes) clipSpans=\(clipTimeline.count) stnLanguages=\(selected.streamLanguages.count)", category: .demux) + let clipInfoDir = (try? udf.list(path: ["BDMV", "CLIPINF"])) ?? [] + let seekTable = buildSeekTable(title: selected, resolved: assembled.resolved) { clip in + guard let entry = clipInfoDir.first(where: { $0.name.caseInsensitiveCompare("\(clip).clpi") == .orderedSame }), + let extents = try? udf.extents(of: entry), !extents.isEmpty else { return nil } + return readAll(reader, extents) + } storeRecognition(cacheKey: cacheKey, selectTitleID: selectTitleID, formatHint: "mpegts", titles: titles, selectedIndex: selectedIndex, - extents: allExtents, clipTimeline: clipTimeline) + extents: allExtents, clipTimeline: clipTimeline, seekTable: seekTable) return DiscInfo(reader: ConcatIOReader(base: reader, extents: allExtents), formatHint: "mpegts", titles: titles, selectedTitleIndex: selectedIndex, - clipTimeline: clipTimeline) + clipTimeline: clipTimeline, seekTable: seekTable) } // MARK: - Bounds on what a disc image can make recognition do (audit NET-103) @@ -103,7 +111,7 @@ enum DiscReader { /// A run of this many unreadable playlists means the source is gone (cancelled or closed reader). private static let maxConsecutiveShortReads = 16 /// `readAll`'s ceiling. - private static let maxSmallFileBytes: Int64 = 8 * 1024 * 1024 + static let maxSmallFileBytes: Int64 = 8 * 1024 * 1024 /// Reads and parses the `.mpls` entries of a PLAYLIST directory under the bounds above. Stops at the /// first bound that trips and keeps what was parsed before it. @@ -111,13 +119,24 @@ enum DiscReader { _ entries: [UDFEntry], extents: (UDFEntry) -> [(offset: Int64, length: Int64)], read: ([(offset: Int64, length: Int64)]) -> [UInt8] + ) -> [MPLSPlaylist] { + scanPlaylists(entries, name: \.name, extents: extents, read: { _, exts in read(exts) }) + } + + /// The same scan over any directory listing: a UDF directory, or the files of a disc folder + /// (`DiscDirectoryReader`), where each playlist is one whole file rather than a set of extents. + static func scanPlaylists( + _ entries: [Entry], + name: (Entry) -> String, + extents: (Entry) -> [(offset: Int64, length: Int64)], + read: (Entry, [(offset: Int64, length: Int64)]) -> [UInt8] ) -> [MPLSPlaylist] { var parsed: [MPLSPlaylist] = [] var examined = 0 var bytesRead: Int64 = 0 var items = 0 var shortReads = 0 - for e in entries where e.name.hasSuffix(".mpls") { + for e in entries where name(e).hasSuffix(".mpls") { examined += 1 guard examined <= maxPlaylistFiles else { EngineLog.emit("[disc] PLAYLIST scan stopped at \(maxPlaylistFiles) .mpls entries", category: .demux) @@ -132,7 +151,7 @@ enum DiscReader { EngineLog.emit("[disc] PLAYLIST scan stopped after \(maxPlaylistBytes) bytes of playlists", category: .demux) break } - let bytes = read(exts) + let bytes = read(e, exts) if Int64(bytes.count) < declared { shortReads += 1 if shortReads >= maxConsecutiveShortReads { @@ -156,21 +175,36 @@ enum DiscReader { /// Resolves a title's clips into the concatenated extent list plus one `ClipSpan` per resolved clip /// (byte start in the concat stream, and how far to pull its timestamps back so it continues /// contiguously from clip 0, AE#105). Each distinct clip is looked up once, a repeated clip reuses its - /// extents, and the title ends at the clip that would pass `maxTitleExtents`. + /// extents, and the title ends at the clip that would pass `maxTitleExtents`. `resolved` names each + /// clip that made it in, by play item index, parallel to `clipTimeline`. static func assembleBluRayTitle( clipIDs: [String], subtractTicks: [Int64], cumulativeBeforeTicks: [UInt64], extentsOfClip: (String) -> [(offset: Int64, length: Int64)]? - ) -> (extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan]) { - var allExtents: [(offset: Int64, length: Int64)] = [] + ) -> (extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan], + resolved: [(item: Int, clip: String, byteStart: Int64)]) { + let assembled = assembleBluRayTitle(clipIDs: clipIDs, subtractTicks: subtractTicks, + cumulativeBeforeTicks: cumulativeBeforeTicks, + piecesOfClip: extentsOfClip, length: \.length) + return (assembled.pieces, assembled.clipTimeline, assembled.resolved) + } + + /// The same assembly over any byte source of a clip: the extents of an image, or the one file a clip is + /// in a disc folder. `length` is a piece's byte count in the concatenated stream. + static func assembleBluRayTitle( + clipIDs: [String], subtractTicks: [Int64], cumulativeBeforeTicks: [UInt64], + piecesOfClip: (String) -> [Piece]?, length: (Piece) -> Int64 + ) -> (pieces: [Piece], clipTimeline: [ClipSpan], resolved: [(item: Int, clip: String, byteStart: Int64)]) { + var allExtents: [Piece] = [] var clipTimeline: [ClipSpan] = [] - var resolved: [String: [(offset: Int64, length: Int64)]?] = [:] + var resolvedClips: [(item: Int, clip: String, byteStart: Int64)] = [] + var resolved: [String: [Piece]?] = [:] var byteStart: Int64 = 0 for (k, clip) in clipIDs.enumerated() { - let lookup: [(offset: Int64, length: Int64)]? + let lookup: [Piece]? if let known = resolved[clip] { lookup = known } else { - lookup = extentsOfClip(clip) + lookup = piecesOfClip(clip) resolved[clip] = .some(lookup) } guard let exts = lookup else { continue } @@ -180,14 +214,15 @@ enum DiscReader { } let predictedShift = k < subtractTicks.count ? Double(subtractTicks[k]) / discTickRate : 0 let cumBeforeSec = k < cumulativeBeforeTicks.count ? Double(cumulativeBeforeTicks[k]) / discTickRate : 0 + resolvedClips.append((k, clip, byteStart)) clipTimeline.append(ClipSpan(concatByteStart: byteStart, cumulativeBeforeSec: cumBeforeSec, predictedShiftSec: predictedShift)) EngineLog.emit("[disc] AE#105 clip[\(k)] id=\(clip) subTicks=\(k < subtractTicks.count ? subtractTicks[k] : 0) predictedSec=\(String(format: "%.3f", predictedShift)) cumBeforeSec=\(String(format: "%.3f", cumBeforeSec)) byteStart=\(byteStart)", category: .demux, level: .verbose) allExtents += exts - byteStart += exts.reduce(Int64(0)) { $0 + max(0, $1.length) } + byteStart += exts.reduce(Int64(0)) { $0 + max(0, length($1)) } } - return (allExtents, clipTimeline) + return (allExtents, clipTimeline, resolvedClips) } /// Memoize a successful recognition so a re-open of the same source (track switch on a remote ISO) @@ -195,12 +230,13 @@ enum DiscReader { private static func storeRecognition( cacheKey: String?, selectTitleID: Int?, formatHint: String, titles: [DiscTitle], selectedIndex: Int, - extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan] = [] + extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan] = [], + seekTable: DiscSeekTable? = nil, dvdTimeMap: DVDTimeMap? = nil ) { guard let cacheKey else { return } let recognition = DiscRecognition(formatHint: formatHint, titles: titles, selectedTitleIndex: selectedIndex, extents: extents, - clipTimeline: clipTimeline) + clipTimeline: clipTimeline, seekTable: seekTable, dvdTimeMap: dvdTimeMap) DiscRecognitionCache.store(key: cacheKey, selectTitleID: selectTitleID, recognition) // The probe opens with selectTitleID == nil (default title), but the rest of the engine // references that same title by its resolved id (== selectedIndex): reloads and the subtitle @@ -237,13 +273,27 @@ enum DiscReader { /// Blu-ray ISO, else nil. `selectTitleID` chooses the title (default = main). DVD titles are the /// per-VTS VOB groups, filtered by the VMGI TT_SRPT title list (whole-VTS; per-cell splitting deferred). static func wrap(_ reader: IOReader, selectTitleID: Int? = nil, cacheKey: String? = nil) throws -> DiscInfo? { + // A disc folder is a set of files, not one byte range, so it is recognized before the cache, + // which rebuilds a reader from extents of a single image. + if let folder = reader as? DiscDirectoryReader { + return wrapBluRayFolder(folder, selectTitleID: selectTitleID) + } if let cacheKey, let cached = DiscRecognitionCache.lookup(key: cacheKey, selectTitleID: selectTitleID) { return DiscInfo(reader: ConcatIOReader(base: reader, extents: cached.extents), formatHint: cached.formatHint, titles: cached.titles, selectedTitleIndex: cached.selectedTitleIndex, - clipTimeline: cached.clipTimeline) + clipTimeline: cached.clipTimeline, seekTable: cached.seekTable, + dvdTimeMap: cached.dvdTimeMap) + } + guard looksLikeISO9660(reader) else { + // The anchor is read once: a probe's input budget counts every read recognition makes. + guard looksLikeUDF(reader) else { return nil } + if let bluRay = try wrapBluRay(reader, selectTitleID: selectTitleID, cacheKey: cacheKey, + udfAnchorChecked: true) { + return bluRay + } + return wrapUDFDVD(reader, selectTitleID: selectTitleID, cacheKey: cacheKey) } - guard looksLikeISO9660(reader) else { return try wrapBluRay(reader, selectTitleID: selectTitleID, cacheKey: cacheKey) } let iso: ISO9660Reader do { iso = try ISO9660Reader(reader: reader) @@ -256,15 +306,52 @@ enum DiscReader { } catch DiscError.directoryNotFound { return try wrapBluRay(reader, selectTitleID: selectTitleID, cacheKey: cacheKey) // ISO9660 but not a DVD-Video disc (Blu-ray / data disc) } + if let dvd = wrapDVD(reader, files: files, sectorSize: iso.sectorSize, selectTitleID: selectTitleID, + cacheKey: cacheKey) { + return dvd + } + return try wrapBluRay(reader, selectTitleID: selectTitleID, cacheKey: cacheKey) + } + + /// A DVD-Video image with no ISO9660 bridge volume: sector 16 starts UDF's BEA01 directly, so the image + /// used to go down the Blu-ray branch, find no BDMV, and play as a raw file, which is the first VOB's + /// menu (8 s of a 6364 s film). `VIDEO_TS` is listed through UDF instead, and the title is built the + /// same way as from ISO9660. DVD files are one contiguous run on disc; a file recorded as runs that do + /// not continue each other is left out. The caller has found the UDF anchor. + static func wrapUDFDVD(_ reader: IOReader, selectTitleID: Int?, cacheKey: String?) -> DiscInfo? { + guard let udf = try? UDFReader(reader: reader), + let root = try? udf.list(path: []), + let dir = root.first(where: { $0.isDir && $0.name.uppercased() == "VIDEO_TS" }), + let entries = try? udf.list(path: [dir.name]) else { return nil } + let sectorSize = 2048 + let files: [DiscFile] = entries.compactMap { entry in + guard !entry.isDir, let extents = try? udf.extents(of: entry), let first = extents.first, + first.offset % Int64(sectorSize) == 0 else { return nil } + var end = first.offset + for extent in extents { + guard extent.offset == end else { return nil } + end += extent.length + } + return DiscFile(name: entry.name, startSector: Int(first.offset / Int64(sectorSize)), + length: Int(end - first.offset)) + } + EngineLog.emit("[disc] UDF-only image with VIDEO_TS (\(files.count) files); attempting DVD-Video", category: .demux) + return wrapDVD(reader, files: files, sectorSize: sectorSize, selectTitleID: selectTitleID, cacheKey: cacheKey) + } + + /// A DVD-Video title set from a `VIDEO_TS` listing, whichever filesystem it came from; nil when the + /// listing holds no title VOBs. + private static func wrapDVD(_ reader: IOReader, files: [DiscFile], sectorSize: Int, selectTitleID: Int?, + cacheKey: String?) -> DiscInfo? { let groups = DVDTitleSelector.enumerateTitleVOBGroups(files) - guard !groups.isEmpty else { return try wrapBluRay(reader, selectTitleID: selectTitleID, cacheKey: cacheKey) } + guard !groups.isEmpty else { return nil } // VIDEO_TS.IFO's TT_SRPT names which title sets are real titles; filter the VOB groups to those so // incidental content VTS are excluded. Any parse failure (or a filter that would empty the list) // falls back to the full VOB-grouped set, so a disc with an unreadable VMGI still plays multi-title. var orderedGroups = groups let filesByName = Dictionary(files.map { ($0.name.uppercased(), $0) }, uniquingKeysWith: { first, _ in first }) if let ifoFile = filesByName["VIDEO_TS.IFO"] { - let ifoBytes = readAll(reader, [(offset: Int64(ifoFile.startSector * iso.sectorSize), + let ifoBytes = readAll(reader, [(offset: Int64(ifoFile.startSector * sectorSize), length: Int64(ifoFile.length))]) if let ifoTitles = DVDIFOParser.parseTitles(ifoBytes) { let titleVTSNs = Set(ifoTitles.map(\.vtsn)) @@ -274,11 +361,12 @@ enum DiscReader { } let selectedIndex = selectTitleID.flatMap { orderedGroups.indices.contains($0) ? $0 : nil } ?? 0 let extents = orderedGroups[selectedIndex].vobs.map { - (offset: Int64($0.startSector * iso.sectorSize), length: Int64($0.length)) + (offset: Int64($0.startSector * sectorSize), length: Int64($0.length)) } // Whole-VTS titles. Each VTS_NN_0.IFO's main PGC gives the title duration and chapter starts; a disc // with an unreadable VTS IFO keeps duration 0 / no chapters but still plays. dvdVTSN keeps the // title -> title-set mapping. + var selectedIFO: [UInt8]? // the cell table and time map come from the selected title's VTS IFO let titles = orderedGroups.enumerated().map { idx, g -> DiscTitle in var durationTicks: UInt64 = 0 var chapters: [DiscChapter] = [] @@ -288,8 +376,9 @@ enum DiscReader { let nn = g.vtsn < 10 ? "0\(g.vtsn)" : "\(g.vtsn)" let ifoName = "VTS_\(nn)_0.IFO" if let vtsIFO = filesByName[ifoName] { - let bytes = readAll(reader, [(offset: Int64(vtsIFO.startSector * iso.sectorSize), + let bytes = readAll(reader, [(offset: Int64(vtsIFO.startSector * sectorSize), length: Int64(vtsIFO.length))]) + if idx == selectedIndex { selectedIFO = bytes } if let detail = DVDIFOParser.parseTitleDetail(bytes) { durationTicks = detail.durationTicks chapters = detail.chapterStartTicks.enumerated().map { i, start in @@ -303,9 +392,42 @@ enum DiscReader { streamLanguages: streamLanguages, dvdSubpictureStreamIDs: subpictureStreamIDs) } + let (cellTimeline, timeMap) = selectedIFO.map(dvdCellTimeline) ?? ([], nil) storeRecognition(cacheKey: cacheKey, selectTitleID: selectTitleID, - formatHint: "mpeg", titles: titles, selectedIndex: selectedIndex, extents: extents) + formatHint: "mpeg", titles: titles, selectedIndex: selectedIndex, extents: extents, + clipTimeline: cellTimeline, dvdTimeMap: timeMap) return DiscInfo(reader: ConcatIOReader(base: reader, extents: extents), - formatHint: "mpeg", titles: titles, selectedTitleIndex: selectedIndex) + formatHint: "mpeg", titles: titles, selectedTitleIndex: selectedIndex, + clipTimeline: cellTimeline, dvdTimeMap: timeMap) + } + + /// The selected DVD title's cells as AE#105 clip spans, and its time map. + /// + /// A title's VOBs are read as one MPEG-PS, but many discs restart the presentation timestamps at each + /// cell: one title's 14 cells put cell 7, at 3569 s of title time, at 147.9 s. Past such a cell the + /// playhead and every timestamp search over the title go wrong. Each cell is handed to the Blu-ray + /// clip fold as a clip (its first byte in the concatenation, its start on the title timeline); its + /// actual timestamp base is measured from the navigation packs as they are read (`Demuxer.adoptDVDNav`). + /// The time map turns title time into a VOBU's byte, so a seek is one byte reposition. + /// Only the common shape is folded: the main PGC starts at the first title sector, its cells follow each + /// other sector by sector, and none is in an angle block. Anything else gets neither, and reads as before. + static func dvdCellTimeline(_ ifo: [UInt8]) -> ([ClipSpan], DVDTimeMap?) { + guard let cells = DVDIFOParser.parseMainPGCCells(ifo), cells.count >= 2, cells[0].firstSector == 0, + !cells.contains(where: \.inAngleBlock), + zip(cells, cells.dropFirst()).allSatisfy({ $1.firstSector == $0.lastSector + 1 }) else { return ([], nil) } + let sector: Int64 = 2048 + var spans: [ClipSpan] = [] + var cumulative = 0.0 + for cell in cells { + // Predicted as if every cell restarts from cell 0's base; the navigation pack replaces it. + spans.append(ClipSpan(concatByteStart: Int64(cell.firstSector) * sector, + cumulativeBeforeSec: cumulative, predictedShiftSec: -cumulative)) + cumulative += cell.durationSec + } + let timeMap = DVDIFOParser.parseMainTimeMap(ifo).map { + DVDTimeMap(unitSec: $0.unitSec, titleStartByte: 0, byteOffsets: $0.sectors.map { Int64($0) * sector }) + } + EngineLog.emit("[disc] DVD title: \(cells.count) cells, time map \(timeMap.map { "\($0.byteOffsets.count) x \(Int($0.unitSec))s" } ?? "none")", category: .demux) + return (spans, timeMap) } } diff --git a/Sources/AetherEngine/Disc/DiscRecognitionCache.swift b/Sources/AetherEngine/Disc/DiscRecognitionCache.swift index d6b46588e..aa217c6e5 100644 --- a/Sources/AetherEngine/Disc/DiscRecognitionCache.swift +++ b/Sources/AetherEngine/Disc/DiscRecognitionCache.swift @@ -12,9 +12,16 @@ struct DiscRecognition: Sendable { /// Per-clip presentation-offset spans for the selected multi-clip Blu-ray title; empty otherwise. /// Cached so a re-open (subtitle side demuxer, reload) rebuilds the same normalized timeline (AE#105). let clipTimeline: [ClipSpan] + /// The selected title's EP-map seek table, cached with it so a re-open seeks the same way. + let seekTable: DiscSeekTable? + /// The selected DVD title's time map, cached so a re-open seeks the same way. + let dvdTimeMap: DVDTimeMap? init(formatHint: String, titles: [DiscTitle], selectedTitleIndex: Int, - extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan] = []) { + extents: [(offset: Int64, length: Int64)], clipTimeline: [ClipSpan] = [], + seekTable: DiscSeekTable? = nil, dvdTimeMap: DVDTimeMap? = nil) { + self.seekTable = seekTable + self.dvdTimeMap = dvdTimeMap self.formatHint = formatHint self.titles = titles self.selectedTitleIndex = selectedTitleIndex diff --git a/Sources/AetherEngine/Disc/DiscSeekTable.swift b/Sources/AetherEngine/Disc/DiscSeekTable.swift new file mode 100644 index 000000000..5aaf99238 --- /dev/null +++ b/Sources/AetherEngine/Disc/DiscSeekTable.swift @@ -0,0 +1,170 @@ +import Foundation + +/// One entry point of a Blu-ray clip's EP map: a video keyframe's presentation time on the clip's own +/// clock (45 kHz) and the source packet it starts at (192 bytes each in an `.m2ts`). +struct CLPIEntryPoint: Sendable, Equatable { + let pts45k: UInt64 + let spn: UInt32 +} + +/// Reads the EP map out of a clip information file (`BDMV/CLIPINF/NNNNN.clpi`). +enum CLPIParser { + /// The primary video PID. A dual-layer Dolby Vision clip maps its enhancement layer on another PID; + /// seeking only needs the base layer's keyframes. + static let primaryVideoPID = 0x1011 + + /// The primary video stream's entry points, ascending by time, or empty when the file is not a + /// readable CLPI (the caller keeps seeking by timestamp then). + /// + /// Field layout as in libbluray's `clpi_access_point`: a coarse entry is 8 bytes + /// (ref_to_EP_fine_id 18 bits, PTS_EP_coarse 14, SPN_EP_coarse 32), a fine entry 4 bytes + /// (angle change 1 bit, I-end offset 3, PTS_EP_fine 11, SPN_EP_fine 17). The full time (45 kHz) is + /// `((coarse & ~1) << 18) + (fine << 8)`, the full packet number `(coarse & ~0x1FFFF) + fine`. + static func entryPoints(_ data: [UInt8]) -> [CLPIEntryPoint] { + func be16(_ at: Int) -> Int { (Int(data[at]) << 8) | Int(data[at + 1]) } + func be32(_ at: Int) -> UInt32 { + (UInt32(data[at]) << 24) | (UInt32(data[at + 1]) << 16) | (UInt32(data[at + 2]) << 8) | UInt32(data[at + 3]) + } + guard data.count >= 20, Array(data[0..<4]) == Array("HDMV".utf8) else { return [] } + let cpiOffset = Int(be32(16)) + guard cpiOffset > 0, cpiOffset + 4 <= data.count else { return [] } + let cpiLength = Int(be32(cpiOffset)) + let cpiEnd = cpiOffset + 4 + cpiLength + guard cpiLength > 0, cpiEnd <= data.count else { return [] } + // 12 reserved bits and the 4-bit CPI type; the EP map's own addresses count from after them. + let epMapPos = cpiOffset + 4 + 2 + guard epMapPos + 2 <= cpiEnd else { return [] } + let streamCount = Int(data[epMapPos + 1]) + var pos = epMapPos + 2 + var chosen: (pid: Int, coarse: Int, fine: Int, start: Int)? + for _ in 0..> 34) & 0xFFFF) + let fineCount = Int((packed >> 16) & 0x3FFFF) + let start = Int((UInt32(truncatingIfNeeded: packed & 0xFFFF) << 16) | UInt32(be16(pos + 10))) + if chosen == nil || pid == primaryVideoPID || (chosen!.pid != primaryVideoPID && pid < chosen!.pid) { + chosen = (pid, coarseCount, fineCount, start) + } + pos += 12 + } + guard let table = chosen, table.coarse > 0, table.fine > 0 else { return [] } + let streamPos = epMapPos + table.start + guard streamPos + 4 <= cpiEnd else { return [] } + let fineStart = Int(be32(streamPos)) + let coarsePos = streamPos + 4 + let finePos = streamPos + fineStart + guard coarsePos + table.coarse * 8 <= cpiEnd, finePos + table.fine * 4 <= cpiEnd else { return [] } + var fineEntries: [(pts: UInt64, spn: UInt32)] = [] + fineEntries.reserveCapacity(table.fine) + for i in 0..> 17) & 0x7FF), raw & 0x1FFFF)) + } + var out: [CLPIEntryPoint] = [] + out.reserveCapacity(table.fine) + for i in 0..> 14) + let ptsCoarse = UInt64(hi & 0x3FFF) + let fineTo = i + 1 < table.coarse ? Int(be32(coarsePos + (i + 1) * 8) >> 14) : table.fine + guard fineFrom <= fineTo else { continue } + for j in fineFrom.. (offset: Int64, clip: Int, keyframeSec: Double)? { + guard let first = clips.first else { return nil } + let base = base0Sec.isFinite ? base0Sec : first.inTimeSec + let titleTime = max(0, seconds - base) + guard let k = clips.lastIndex(where: { $0.cumulativeBeforeSec <= titleTime + 0.001 }) else { return nil } + let clip = clips[k] + guard !clip.entries.isEmpty else { return nil } + let raw45k = UInt64(max(0, (clip.inTimeSec + (titleTime - clip.cumulativeBeforeSec)) * discTickRate)) + var lo = 0 + var hi = clip.entries.count - 1 + var best = 0 + while lo <= hi { + let mid = (lo + hi) / 2 + if clip.entries[mid].pts45k <= raw45k { + best = mid + lo = mid + 1 + } else { + hi = mid - 1 + } + } + let entry = clip.entries[best] + return (clip.concatByteStart + Int64(entry.spn) * 192, k, Double(entry.pts45k) / discTickRate) + } +} + +extension DiscReader { + /// Distinct clips whose CLPI a seek table reads at most. + static let maxSeekTableClips = 256 + + /// The selected title's seek table, from the CLPI of each clip the title resolved. `resolved` lists + /// those clips with their play item index and their first byte in the concatenated stream. nil when + /// the playlist carries no `in_time`s or any clip has no readable EP map, so a title is either sought + /// by its maps throughout or by timestamp throughout. + static func buildSeekTable(title: DiscTitle, + resolved: [(item: Int, clip: String, byteStart: Int64)], + readCLPI: (String) -> [UInt8]?) -> DiscSeekTable? { + guard let inTimes = title.bdClipInTimes, !resolved.isEmpty else { return nil } + // One small file per distinct clip. A real title has a handful; a title past this is not worth a + // request per clip before the first frame, and keeps seeking by timestamp. + guard Set(resolved.map(\.clip)).count <= maxSeekTableClips else { return nil } + let cumulativeBefore = title.bdClipCumulativeBeforeTicks ?? [] + var maps: [String: [CLPIEntryPoint]] = [:] + var clips: [DiscSeekTable.Clip] = [] + for item in resolved { + guard item.item < inTimes.count else { return nil } + let entries = maps[item.clip] ?? (readCLPI(item.clip).map(CLPIParser.entryPoints) ?? []) + maps[item.clip] = entries + guard !entries.isEmpty else { + EngineLog.emit("[disc] seek table: clip \(item.clip) has no readable EP map; seeking by timestamp", category: .demux) + return nil + } + clips.append(.init(concatByteStart: item.byteStart, + cumulativeBeforeSec: item.item < cumulativeBefore.count + ? Double(cumulativeBefore[item.item]) / discTickRate : 0, + inTimeSec: Double(inTimes[item.item]) / discTickRate, + entries: entries)) + } + EngineLog.emit("[disc] seek table: \(clips.count) clip(s), entries=\(clips.map(\.entries.count))", category: .demux) + return DiscSeekTable(clips: clips) + } +} diff --git a/Sources/AetherEngine/FFmpegErrorConstants.swift b/Sources/AetherEngine/FFmpegErrorConstants.swift index 6f4c22da7..f64937375 100644 --- a/Sources/AetherEngine/FFmpegErrorConstants.swift +++ b/Sources/AetherEngine/FFmpegErrorConstants.swift @@ -19,6 +19,8 @@ enum FFmpegErr { /// `AVERROR(EIO)`; EIO is POSIX 5. "The source is lost", as distinct from `eof`, which every /// consumer reads as played-to-the-end and deliberately never retries. static let eio: Int32 = -5 + /// `AVERROR(ENOSPC)`; ENOSPC is POSIX 28. The volume a write went to is full. + static let enospc: Int32 = -28 /// FFmpeg's own text for an AVERROR code, with the raw number appended so a report never loses it /// ("Invalid data found when processing input (-1094995529)"). Falls back to the bare number when diff --git a/Sources/AetherEngine/FrameExtractor/FrameDecodeContext.swift b/Sources/AetherEngine/FrameExtractor/FrameDecodeContext.swift index ce40de84e..4392b6ed5 100644 --- a/Sources/AetherEngine/FrameExtractor/FrameDecodeContext.swift +++ b/Sources/AetherEngine/FrameExtractor/FrameDecodeContext.swift @@ -26,6 +26,9 @@ final class FrameDecodeContext: @unchecked Sendable { /// (main) title. Threaded into `Demuxer.open` so a still follows the currently-selected disc title /// instead of always decoding the default one (AE#105). private let selectTitleID: Int? + /// Owned only during a controlled one-shot extraction. The ordinary URL and + /// custom-reader paths retain their existing ownership rules. + private var boundedReader: IOReader? private var demuxer: Demuxer? private var codecContext: UnsafeMutablePointer? @@ -35,6 +38,7 @@ final class FrameDecodeContext: @unchecked Sendable { private var swsContext: UnsafeMutablePointer? private var videoStreamIndex: Int32 = -1 private var timeBase = AVRational(num: 1, den: 90000) + private var presentationStartSeconds: Double? /// Source SAR (sample aspect ratio) read from the stream at open. Anamorphic /// sources (NTSC/PAL DVD, anamorphic Blu-ray) store non-square pixels; without /// this the thumbnail draws square-pixel and looks stretched. Defaults 1:1. @@ -150,10 +154,10 @@ final class FrameDecodeContext: @unchecked Sendable { /// Open demuxer + decoder if not already open. Throws on failure, leaving the /// context fully closed (no partial state to leak). - func ensureOpen() throws { + func ensureOpen(control: ProbeControl? = nil) throws { guard !isOpen else { return } do { - try openInternal() + try openInternal(control: control) isOpen = true } catch { close() @@ -176,6 +180,8 @@ final class FrameDecodeContext: @unchecked Sendable { } demuxer?.close() demuxer = nil + boundedReader?.close() + boundedReader = nil videoStreamIndex = -1 isHDR = false isDolbyVisionNoBaseLayer = false @@ -183,9 +189,38 @@ final class FrameDecodeContext: @unchecked Sendable { isOpen = false } - private func openInternal() throws { + private func openInternal(control: ProbeControl?) throws { let demuxer = Demuxer() - if let reader = reader { + demuxer.probeControl = control + if let control { + let source: IOReader + if let reader { + source = reader + } else if url.isFileURL { + guard let file = FileIOReader(url: url) else { throw DemuxerError.openFailed(code: -1) } + source = file + boundedReader = file + } else if ["http", "https"].contains(url.scheme?.lowercased() ?? "") { + let http = ProbeHTTPReader(url: url, headers: httpHeaders, control: control, + boundedWindowBytes: 64 * 1024) + source = http + boundedReader = http + } else { + throw ProbeError.unsupportedURL + } + // Count from before demux open through seek and decode. The 64 KiB + // HTTP window bounds bytes fetched ahead of the input-byte limit. + // Register the cancellation handler BEFORE the HTTP open; a stalled + // response header must be interruptible by the same deadline. + let counted = ProbeIOReader(reader: source, control: control) + try control.check() + if let http = source as? ProbeHTTPReader { try http.open() } + try control.check() + try demuxer.open(reader: counted, + formatHint: formatHint, profile: .stillExtraction, + selectTitleID: selectTitleID) + try control.check() + } else if let reader = reader { try demuxer.open(reader: reader, formatHint: formatHint, profile: .stillExtraction) } else { try demuxer.open(url: url, extraHeaders: httpHeaders, profile: .stillExtraction, selectTitleID: selectTitleID) @@ -198,6 +233,8 @@ final class FrameDecodeContext: @unchecked Sendable { } videoStreamIndex = videoIdx timeBase = stream.pointee.time_base + presentationStartSeconds = stream.pointee.start_time == Int64.min || timeBase.den <= 0 + ? nil : Double(stream.pointee.start_time) * Double(timeBase.num) / Double(timeBase.den) demuxer.discardAllStreamsExcept([videoIdx]) @@ -382,7 +419,12 @@ final class FrameDecodeContext: @unchecked Sendable { mode: FrameMode, targetWidth: Int, maxSize: CGSize?, - isCancelled: () -> Bool + afterFirstFrame offsetSeconds: Double? = nil, + isCancelled: () -> Bool, + residentTarget: Double? = nil, + reportResidentTime: ((Double, Bool) -> Void)? = nil, + residentDeadline: ContinuousClock.Instant? = nil, + reportDecodedTime: ((Double?) -> Void)? = nil ) -> CGImage? { guard isOpen, let ctx = codecContext, let demuxer else { return nil } @@ -412,10 +454,27 @@ final class FrameDecodeContext: @unchecked Sendable { category: .swPlayback) } - demuxer.seek(to: seekSeconds) + // A resident reader contains one segment. The request already carries + // the raw target restored from its byte epoch, independent of tfdt zero. + if let residentTarget, mode == .snapshot { + guard let start = presentationStartSeconds, abs(residentTarget - start) <= 12 else { return nil } + } + demuxer.seek(to: residentTarget == nil ? seekSeconds : 0) + // A resident frame is compared on its source PTS axis, including any nonzero segment origin. // A target the stream's own time base cannot hold is no position in it (audit BIT-105). - guard let targetPTS = Demuxer.ticks(forSeconds: seekSeconds, timeBase: timeBase) else { return nil } + let targetSeconds = residentTarget ?? seekSeconds + guard var targetPTS = Demuxer.ticks(forSeconds: targetSeconds, timeBase: timeBase) else { return nil } + // AE#711 follow-up: a target measured from the first frame decoded rather than on the stream's + // axis, for a cache segment whose fMP4 tfdt may be absolute or zero-based (after a producer + // restart). Fixed on the first frame that carries a PTS. + var offsetTicks: Int64? + if let offsetSeconds { + guard let ticks = Demuxer.ticks(forSeconds: max(0, offsetSeconds), timeBase: timeBase) else { return nil } + offsetTicks = ticks + } + let deadline = residentDeadline ?? ContinuousClock.now.advanced(by: .milliseconds(750)) + var packetCount = 0 var frame: UnsafeMutablePointer? = av_frame_alloc() guard frame != nil else { return nil } @@ -488,6 +547,7 @@ final class FrameDecodeContext: @unchecked Sendable { var draining = false while true { if isCancelled() { return nil } + if residentTarget != nil, (ContinuousClock.now >= deadline || packetCount >= 900) { return nil } if !draining { let packetOrNil: UnsafeMutablePointer? @@ -501,6 +561,7 @@ final class FrameDecodeContext: @unchecked Sendable { draining = true continue } + packetCount += 1 if packet.pointee.stream_index != videoStreamIndex { av_packet_unref(packet) av_packet_free_safe(packet) @@ -533,6 +594,10 @@ final class FrameDecodeContext: @unchecked Sendable { // Skip frames before targetPTS for frame-accuracy. No-PTS frames // (AV_NOPTS_VALUE == Int64.min) are accepted, so PTS-less streams // degrade to the first frame after the seek. + if let ticks = offsetTicks, f.pointee.pts != Int64.min { + targetPTS = f.pointee.pts + ticks + offsetTicks = nil + } if mode == .snapshot, f.pointee.pts != Int64.min, f.pointee.pts < targetPTS { @@ -551,8 +616,23 @@ final class FrameDecodeContext: @unchecked Sendable { mode: mode, targetWidth: targetWidth, maxSize: maxSize, - isCancelled: isCancelled) + afterFirstFrame: offsetSeconds, + isCancelled: isCancelled, + residentTarget: residentTarget, + reportResidentTime: reportResidentTime, + residentDeadline: deadline, + reportDecodedTime: reportDecodedTime) + } + if let residentTarget { + guard f.pointee.pts != Int64.min else { return nil } + let raw = Double(f.pointee.pts) * Double(timeBase.num) / Double(timeBase.den) + guard raw.isFinite else { return nil } + reportResidentTime?(raw, mode == .snapshot && raw >= residentTarget && + presentationStartSeconds.map { residentTarget >= $0 } == true) } + let decodedPTS = f.pointee.pts == Int64.min ? nil + : Optional(Double(f.pointee.pts) * Double(timeBase.num) / Double(timeBase.den)) + reportDecodedTime?(decodedPTS.flatMap { $0.isFinite ? $0 : nil }) return image } } diff --git a/Sources/AetherEngine/FrameExtractor/FrameExtractor.swift b/Sources/AetherEngine/FrameExtractor/FrameExtractor.swift index 83c8e3be1..9e60ee8d8 100644 --- a/Sources/AetherEngine/FrameExtractor/FrameExtractor.swift +++ b/Sources/AetherEngine/FrameExtractor/FrameExtractor.swift @@ -1,6 +1,17 @@ import Foundation import CoreGraphics +/// A bounded one-shot still. nil PTS means the source supplied no timestamp; +/// callers must label the requested time rather than claim a measured one. +// CGImage is immutable; all other stored properties are immutable Sendable values. +public struct BoundedStillFrame: @unchecked Sendable { + public let image: CGImage + public let actualSeconds: Double? + public init(image: CGImage, actualSeconds: Double?) { + self.image = image; self.actualSeconds = actualSeconds + } +} + /// Produces still images from a media URL via an isolated FFmpeg decode context, /// separate from playback. Two modes share one decode core: `snapshot` (frame-accurate, /// full-res) and `thumbnail` (keyframe-snapped, low-res, fast). Lazy: context opens on @@ -27,6 +38,7 @@ public actor FrameExtractor { func cancel() { lock.lock(); _cancelled = true; lock.unlock() } } private var currentToken: CancelToken? + private var boundedCancellation: ProbeCancellation? /// Set by `shutdown()`. Once true, the extractor refuses further /// work instead of lazily reopening a closed context. @@ -34,18 +46,61 @@ public actor FrameExtractor { private let idleInterval: Duration = .seconds(10) private var idleTask: Task? + private var residentApproximation: (width: Int, frame: ScrubFrame)? + nonisolated let residentIdentity: String? + func clearResidentPreviewCache() { + currentToken?.cancel() + residentApproximation = nil + } - private init(context: FrameDecodeContext, yieldWhile: (@Sendable () -> Bool)?) { + /// Only used with a one-segment DataIOReader. No URL or provider fallback. + /// Refined results bypass the old 0.1 s snapshot bucket entirely. + func residentPreview(rawTarget: Double, refined: Bool, maxWidth: Int, + isCancelled: @escaping @Sendable () -> Bool) async -> ScrubFrame? { + guard !isShutDown, rawTarget.isFinite, + !Task.isCancelled, !isCancelled() else { return nil } + guard maxWidth > 0 else { return nil } + let width = maxWidth + if !refined, let cached = residentApproximation, cached.width == width { + scheduleIdleClose() + return cached.frame + } + currentToken?.cancel() + boundedCancellation?.cancel() + let token = CancelToken(); currentToken = token + let context = self.context + let result: ScrubFrame? = await withTaskCancellationHandler { + await runOnQueue { + guard !token.isCancelled, !isCancelled() else { return nil } + do { try context.ensureOpen() } catch { return nil } + var actual: Double? + var didRefine = false + let image = context.decodeFrame(at: 0, mode: refined ? .snapshot : .thumbnail, + targetWidth: width, maxSize: CGSize(width: CGFloat(width), height: CGFloat(width)), + isCancelled: { token.isCancelled || isCancelled() }, residentTarget: rawTarget, + reportResidentTime: { actual = $0; didRefine = $1 }) + guard let image, let actual, !token.isCancelled, !isCancelled() else { return nil } + return ScrubFrame(image: image, actualSeconds: actual, refined: didRefine) + } + } onCancel: { token.cancel() } + guard !Task.isCancelled, !isCancelled(), !token.isCancelled else { return nil } + if !refined, let result, result.image.bytesPerRow * result.image.height <= 512 * 1_024 { + residentApproximation = (width, result) + } + scheduleIdleClose() + return result + } + + private init(context: FrameDecodeContext, yieldWhile: (@Sendable () -> Bool)?, residentIdentity: String? = nil) { self.context = context + self.residentIdentity = residentIdentity self.yieldWhile = yieldWhile self.cache = FrameCache( thumbnailLimit: 24, snapshotLimit: 2, thumbnailBucketSeconds: 1.0 ) - // .utility (not .userInitiated): the disposable thumbnail decode must yield to - // the real-time software playback decode under CPU contention so it cannot - // starve playback on a weak box (issue #27). + // Still extraction is elective work and must yield to playback under CPU contention. self.decodeQueue = DispatchQueue(label: "com.aetherengine.frameextractor", qos: .utility) } @@ -67,6 +122,11 @@ public actor FrameExtractor { yieldWhile: yieldWhile) } + init(residentReader: IOReader, formatHint: String, identity: String) { + self.init(context: FrameDecodeContext(reader: residentReader, formatHint: formatHint), + yieldWhile: nil, residentIdentity: identity) + } + /// Yield decision for elective (thumbnail) extraction. The disposable decode's demuxer pulls /// megabytes over the same link the segment producer needs; during startup and recovery that /// contention tipped the first segment past CoreMedia's ~4 s media timeout and killed the @@ -94,6 +154,63 @@ public actor FrameExtractor { await produce(at: seconds, mode: .snapshot, targetWidth: 0, maxSize: maxSize) } + /// AE#711 follow-up: the frame `offset` seconds after the first one this source decodes, for a + /// one-segment cache source whose timestamps may sit on either axis. Frame-accurate like + /// `snapshot`, uncached (the cache keys on stream time), and with the same Dolby Vision and HDR + /// conversion as every still. + func snapshot(afterFirstFrameBy offset: Double, maxSize: CGSize? = nil) async -> CGImage? { + guard !isShutDown, offset.isFinite else { return nil } + let context = self.context + let image = await runOnQueue { () -> CGImage? in + do { try context.ensureOpen() } catch { + EngineLog.emit("[FrameExtractor] open failed: \(error)", category: .swPlayback) + return nil + } + return context.decodeFrame(at: 0, mode: .snapshot, targetWidth: 0, maxSize: maxSize, + afterFirstFrame: offset, isCancelled: { false }) + } + scheduleIdleClose() + return image + } + + /// Disposable source-backed preview with one budget spanning open, stream + /// analysis, seek and decode. The controlled reader counts every input byte, + /// the monotonic deadline interrupts I/O, and a late result is discarded. + /// Unlike snapshot(), this never uses a previously opened or cached context. + public func boundedSnapshot(at seconds: Double, maxSize: CGSize, + limits: ProbeLimits, cancellation: ProbeCancellation) async -> BoundedStillFrame? { + guard !isShutDown, seconds.isFinite, !Task.isCancelled, !cancellation.isCancelled, + let control = try? ProbeControl(limits: limits, cancellation: cancellation) else { return nil } + currentToken?.cancel() + boundedCancellation?.cancel() + boundedCancellation = cancellation + let token = CancelToken(); currentToken = token + let context = self.context + let result = await withTaskCancellationHandler { + await runOnQueue { () -> BoundedStillFrame? in + // A previously opened demuxer was outside this budget. Reject + // it instead of letting its teardown extend this one-shot work. + guard !context.isOpen else { control.finish(); return nil } + defer { context.close(); control.finish() } + guard !token.isCancelled, !cancellation.isCancelled else { return nil } + do { try context.ensureOpen(control: control) } catch { return nil } + var actual: Double? + guard let image = context.decodeFrame(at: seconds, mode: .snapshot, + targetWidth: 0, maxSize: maxSize, + isCancelled: { token.isCancelled || cancellation.isCancelled || control.isStopped }, + reportDecodedTime: { actual = $0 }), + !token.isCancelled, !cancellation.isCancelled else { return nil } + do { try control.complete() } catch { return nil } + return BoundedStillFrame(image: image, actualSeconds: actual) + } + } onCancel: { + token.cancel() + cancellation.cancel() + } + if boundedCancellation === cancellation { boundedCancellation = nil } + return !Task.isCancelled && !cancellation.isCancelled && !token.isCancelled ? result : nil + } + /// Open the decode context ahead of the first request to hide cold-start latency /// (e.g. at the start of a scrub gesture). public func prewarm() async { @@ -111,7 +228,10 @@ public actor FrameExtractor { idleTask?.cancel() isShutDown = true currentToken?.cancel() + boundedCancellation?.cancel() + boundedCancellation = nil cache.clear() + residentApproximation = nil let context = self.context await runOnQueue { context.close() } } @@ -133,6 +253,7 @@ public actor FrameExtractor { return nil } currentToken?.cancel() + boundedCancellation?.cancel() let token = CancelToken() currentToken = token @@ -200,6 +321,7 @@ public actor FrameExtractor { /// shutdown() this does NOT set `isShutDown`, so the next request lazily reopens. private func idleClose() { cache.clear() + residentApproximation = nil let context = self.context // Fire-and-forget: best-effort, no caller awaits it; runOnQueue would block the actor for nothing. decodeQueue.async { context.close() } diff --git a/Sources/AetherEngine/FrameExtractor/FrameTypes.swift b/Sources/AetherEngine/FrameExtractor/FrameTypes.swift index 0a1a6de5e..d39e573d9 100644 --- a/Sources/AetherEngine/FrameExtractor/FrameTypes.swift +++ b/Sources/AetherEngine/FrameExtractor/FrameTypes.swift @@ -1,4 +1,28 @@ import Foundation +import CoreGraphics + +/// A resident still's measured timestamp, on the caller's timeline. Refinement +/// means target-directed decoding succeeded, not that requested and actual PTS coincide. +// CGImage is immutable; all other stored properties are immutable Sendable values. +public struct ScrubFrame: @unchecked Sendable { + public let image: CGImage + public let actualSeconds: Double + public let refined: Bool + public let validRange: Range? + public init(image: CGImage, actualSeconds: Double, refined: Bool, validRange: Range? = nil) { + self.image = image; self.actualSeconds = actualSeconds; self.refined = refined + self.validRange = validRange + } +} + +/// Raw PTS is restored with the normalization recorded for the bytes' epoch, +/// then folded through the same source origin as the published playhead. +enum ScrubSegmentTime { + static func displayTime(rawPTS: Double, carriedOffset: Double, displayOrigin: Double) -> Double? { + guard rawPTS.isFinite, carriedOffset.isFinite, displayOrigin.isFinite else { return nil } + return rawPTS + carriedOffset - displayOrigin + } +} /// Which extraction mode produced (or is requested for) a frame. /// diff --git a/Sources/AetherEngine/IO/HLSIngest/HLSLiveIngestReader.swift b/Sources/AetherEngine/IO/HLSIngest/HLSLiveIngestReader.swift index bf595ee5f..aa7e63ec9 100644 --- a/Sources/AetherEngine/IO/HLSIngest/HLSLiveIngestReader.swift +++ b/Sources/AetherEngine/IO/HLSIngest/HLSLiveIngestReader.swift @@ -271,7 +271,7 @@ public final class HLSLiveIngestReader: IOReader, LiveIngestSourceInfo, @uncheck guard !started, !closed else { return } started = true // Strong capture: the ingest loop must keep the reader and FIFO alive until close() cancels it. - ingestTask = Task.detached(priority: .userInitiated) { [self] in + ingestTask = BlockingWork.detached(priority: .userInitiated) { [self] in await runIngest() } } diff --git a/Sources/AetherEngine/IO/HLSIngest/HLSVODIngestReader.swift b/Sources/AetherEngine/IO/HLSIngest/HLSVODIngestReader.swift index f2d0b5853..4c19e3d09 100644 --- a/Sources/AetherEngine/IO/HLSIngest/HLSVODIngestReader.swift +++ b/Sources/AetherEngine/IO/HLSIngest/HLSVODIngestReader.swift @@ -29,6 +29,12 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { private let httpHeaders: [String: String] private let session: URLSession private let ownsSession: Bool + /// AE#732: set under `LoadOptions.heldSourceConnection`. Every request of this reader then goes over + /// one persistent HTTP/1.1 connection per origin, segments one at a time, instead of `session`. + private let transport: PersistentHTTP1Transport? + /// AE#732: the first segment, downloaded whole by the carriage probe on the persistent path (a probe + /// that stopped mid-body would cost the connection), handed to the producer that starts there. + private var primedSegment: (url: URL, bytes: Data)? private let condition = NSCondition() private let keyCacheLock = NSLock() private var keyCache: [String: Data] = [:] @@ -51,10 +57,12 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { init( playlistURL: URL, httpHeaders: [String: String], - session: URLSession? = nil + session: URLSession? = nil, + persistentHTTP1: Bool = false ) { self.playlistURL = playlistURL self.httpHeaders = httpHeaders + transport = persistentHTTP1 ? PersistentHTTP1Transport(label: "vod") : nil if let session { self.session = session ownsSession = false @@ -77,12 +85,14 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { static func makeIfHEVCMPEGTS( playlistURL: URL, httpHeaders: [String: String], - session: URLSession? = nil + session: URLSession? = nil, + persistentHTTP1: Bool = false ) async throws -> HLSVODIngestReader? { let reader = HLSVODIngestReader( playlistURL: playlistURL, httpHeaders: httpHeaders, - session: session + session: session, + persistentHTTP1: persistentHTTP1 ) var accepted = false defer { @@ -98,7 +108,7 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { ) else { return nil } - guard try await reader.probeCarriage(segmentURL) == .hevcInMPEGTS else { + guard try await reader.probeCarriage(segmentURL, duration: first.duration) == .hevcInMPEGTS else { return nil } reader.condition.withLock { @@ -204,7 +214,7 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { finished = false failed = false producerStartIndex = startIndex - producer = Task.detached(priority: .userInitiated) { [self] in + producer = BlockingWork.detached(priority: .userInitiated) { [self] in await produce( resolved: resolved, startIndex: startIndex, @@ -272,6 +282,7 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { condition.broadcast() condition.unlock() task?.cancel() + transport?.close() if ownsSession { session.invalidateAndCancel() } @@ -294,7 +305,7 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { let currentGeneration = generation let preResolved = resolved producerStartIndex = 0 - producer = Task.detached(priority: .userInitiated) { [self] in + producer = BlockingWork.detached(priority: .userInitiated) { [self] in do { let media: ResolvedMedia if let preResolved { @@ -376,6 +387,11 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { return (segment, url) } + if transport != nil { + try await ingestSequentially(resolvedSegments, mediaURL: mediaURL, generation: generation) + return + } + try await withThrowingTaskGroup(of: (Int, Data).self) { group in var nextToSpawn = 0 var nextToCommit = 0 @@ -425,6 +441,36 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { } } + /// AE#732: one segment at a time, so the persistent connection carries them back to back. The FIFO + /// is the read-ahead; a parallel window would need a connection per in-flight segment, and a second + /// connection is what the origins this path exists for refuse. + private func ingestSequentially( + _ segments: [(HLSMediaSegment, URL)], + mediaURL: URL, + generation: UInt64 + ) async throws { + let primed = condition.withLock { () -> (url: URL, bytes: Data)? in + defer { primedSegment = nil } + return primedSegment + } + for (offset, (segment, url)) in segments.enumerated() { + try Task.checkCancellation() + var bytes: Data + if offset == 0, let primed, primed.url == url { + bytes = primed.bytes + } else { + bytes = try await fetch(url, limit: BoundedFetch.segmentLimit(forDuration: segment.duration)) + } + if let crypt = segment.crypt { + bytes = try await decrypt(bytes, crypt: crypt, baseURL: mediaURL) + } + if offset == 0, LiveSegmentFormat.classify(bytes) != .mpegts { + throw HLSIngestError.unsupportedSegmentFormat + } + guard append(bytes, generation: generation) else { return } + } + } + private func append(_ data: Data, generation: UInt64) -> Bool { condition.lock() defer { condition.unlock() } @@ -514,16 +560,30 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { /// Credentials only where the host's playlist is (audit NET-7). func makeRequest(_ url: URL) -> URLRequest { var request = URLRequest(url: url) - for (field, value) in RedirectHeaderPolicy.scoped( - httpHeaders, grantedFor: playlistURL, sentTo: url) { + for (field, value) in scopedHeaders(url) { request.setValue(value, forHTTPHeaderField: field) } return request } + private func scopedHeaders(_ url: URL) -> [String: String] { + RedirectHeaderPolicy.scoped(httpHeaders, grantedFor: playlistURL, sentTo: url) + } + private func fetchPlaylist(_ url: URL) async throws -> (HLSPlaylist, URL) { - let (data, response) = try await BoundedPlaylistFetch.data( - for: makeRequest(url), session: session, limit: Self.maximumPlaylistBytes) + let data: Data + let response: URLResponse + if let transport { + do { + let answer = try await transport.get(url, headers: scopedHeaders(url), limit: Self.maximumPlaylistBytes) + (data, response) = (answer.body, answer.response) + } catch let error as BoundedFetch.Exceeded { + throw HLSIngestError.playlistInvalid(reason: "playlist exceeds \(error.limit) bytes") + } + } else { + (data, response) = try await BoundedPlaylistFetch.data( + for: makeRequest(url), session: session, limit: Self.maximumPlaylistBytes) + } let status = (response as? HTTPURLResponse)?.statusCode ?? -1 guard (200..<300).contains(status) else { throw HLSIngestError.playlistUnreachable(status: status) @@ -539,7 +599,12 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { let data: Data let response: URLResponse do { - (data, response) = try await BoundedFetch.data(for: makeRequest(url), session: session, limit: limit) + if let transport { + let answer = try await transport.get(url, headers: scopedHeaders(url), limit: limit) + (data, response) = (answer.body, answer.response) + } else { + (data, response) = try await BoundedFetch.data(for: makeRequest(url), session: session, limit: limit) + } } catch is BoundedFetch.Exceeded { throw HLSIngestError.playlistInvalid(reason: "body exceeds \(limit) bytes") } @@ -552,8 +617,19 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { /// Reads the head of the first segment and classifies its carriage (AE#293 shares this read with the /// live probe, so both paths judge a source the same way). - private func probeCarriage(_ url: URL) async throws -> MPEGTransportStreamCodecProbe.Verdict { - try await HLSCarriageProbe.classifySegmentHead( + private func probeCarriage( + _ url: URL, duration: Double + ) async throws -> MPEGTransportStreamCodecProbe.Verdict { + if transport != nil { + let bytes = try await fetch(url, limit: BoundedFetch.segmentLimit(forDuration: duration)) + let verdict = MPEGTransportStreamCodecProbe.classify( + bytes.prefix(HLSCarriageProbe.maximumSegmentHeadBytes)) + if verdict == .hevcInMPEGTS { + condition.withLock { primedSegment = (url, bytes) } + } + return verdict + } + return try await HLSCarriageProbe.classifySegmentHead( url: url, httpHeaders: RedirectHeaderPolicy.scoped(httpHeaders, grantedFor: playlistURL, sentTo: url), session: session @@ -590,11 +666,15 @@ final class HLSVODIngestReader: TimeSeekableIOReader, @unchecked Sendable { } } -/// Bounded MPEG-TS PMT inspection. HEVC is stream_type 0x24; no URL suffix or -/// response MIME type is treated as codec evidence. +/// Bounded MPEG-TS PMT inspection. HEVC is stream_type 0x24, or private PES (0x06) carrying a +/// well-formed `registration_descriptor("HEVC")` (AE#718); no URL suffix or response MIME type is +/// treated as codec evidence. enum MPEGTransportStreamCodecProbe { private static let packetSize = 188 private static let hevcStreamType: UInt8 = 0x24 + private static let privatePESStreamType: UInt8 = 0x06 + private static let registrationDescriptorTag: UInt8 = 0x05 + private static let hevcFormatIdentifier: [UInt8] = Array("HEVC".utf8) enum Verdict: Equatable { /// PMT declares HEVC: AVFoundation builds no video track for this carriage (HLS Authoring @@ -660,10 +740,33 @@ enum MPEGTransportStreamCodecProbe { let infoLength = (Int(bytes[stream + 3] & 0x0F) << 8) | Int(bytes[stream + 4]) - stream += 5 + infoLength + let descriptorsEnd = stream + 5 + infoLength + if bytes[stream] == privatePESStreamType, + descriptorsEnd <= sectionEnd, + registersHEVC(bytes, descriptors: (stream + 5)..) -> Bool { + var descriptor = descriptors.lowerBound + while descriptor + 2 <= descriptors.upperBound { + let length = Int(bytes[descriptor + 1]) + let body = descriptor + 2 + guard body + length <= descriptors.upperBound else { return false } + if bytes[descriptor] == registrationDescriptorTag, length >= 4, + Array(bytes[body..<(body + 4)]) == hevcFormatIdentifier { + return true + } + descriptor = body + length + } + return false + } } private extension NSCondition { diff --git a/Sources/AetherEngine/IO/HLSIngest/PersistentHTTP1Transport.swift b/Sources/AetherEngine/IO/HLSIngest/PersistentHTTP1Transport.swift new file mode 100644 index 000000000..b3caa284e --- /dev/null +++ b/Sources/AetherEngine/IO/HLSIngest/PersistentHTTP1Transport.swift @@ -0,0 +1,457 @@ +import Foundation + +/// AE#732: the HLS VOD ingest's transport under `LoadOptions.heldSourceConnection`. +/// +/// Some origins answer an HLS segment reliably only over one persistent HTTP/1.1 connection: h2 and +/// freshly opened HTTP/1.1 connections are refused (403) while consecutive requests on one keep-alive +/// connection are served. Forcing the protocol per request is therefore not enough, the connection has +/// to outlive the segment, which is what this pool is for. It is the HLS sibling of +/// `HeldSourceConnection` (#377) and shares its wire format: HTTP/1.1 written by the engine over a +/// `URLSessionStreamTask`, TLS through `EngineTLS`, no ALPN and so never h2, no system proxy. +/// +/// Requests run one after another over the idle connection of their origin (scheme, host, port). A +/// connection goes back to the pool only after a complete response it can be reused for: HTTP/1.1, +/// no `Connection: close`, and a body with a known end. Everything else, an error, a cancellation +/// mid-body or a body cut off at its limit, closes it, and the next request opens a fresh one. +/// Concurrent callers each get their own connection; the ingest issues one request at a time on this +/// path, so that only happens for the moment a seek takes to retire the previous producer. +final class PersistentHTTP1Transport: @unchecked Sendable { + static let maxRedirects = 3 + /// Idle connections kept, one per origin. A segment redirected to a CDN host keeps both the + /// playlist origin and the CDN connection warm. + private static let maxIdleOrigins = 2 + + struct Response { + let body: Data + let response: HTTPURLResponse + } + + private let label: String + private let lock = NSLock() + private var idle: [Origin: PersistentHTTP1Connection] = [:] + private var closed = false + private var nextConnectionID = 0 + + init(label: String) { + self.label = label + } + + /// GET `url` with `headers`, redirects followed under the #126 header policy. A non-2xx answer + /// comes back with its status and whatever body it had, read to its end so the connection stays + /// usable. Throws `BoundedFetch.Exceeded` for a 2xx body over `limit`. + func get(_ url: URL, headers: [String: String], limit: Int) async throws -> Response { + var target = url + var hops = 0 + while true { + let hopHeaders = RedirectHeaderPolicy.headersToReplay( + extraHeaders: headers, originalURL: url, redirectURL: target) + let (head, body) = try await exchange(target, headers: hopHeaders, limit: limit) + if let location = HeldSourceConnection.redirectLocation(head) { + guard hops < Self.maxRedirects else { + throw PersistentHTTP1Connection.ConnectionError.tooManyRedirects + } + guard let next = URL(string: location, relativeTo: target)?.absoluteURL else { + throw PersistentHTTP1Connection.ConnectionError.malformed("unresolvable Location: \(location)") + } + hops += 1 + target = next + continue + } + guard let response = HeldSourceConnection.makeResponse(head, url: target) else { + throw PersistentHTTP1Connection.ConnectionError.malformed("status \(head.status)") + } + return Response(body: body, response: response) + } + } + + /// Closes every idle connection and refuses further requests. + func close() { + lock.lock() + closed = true + let connections = Array(idle.values) + idle.removeAll() + lock.unlock() + for connection in connections { connection.retire(reason: "transport closed") } + } + + /// One request and its response on a pooled connection. A REUSED connection that fails before a + /// response head is retried once on a fresh one: an origin may close an idle keep-alive connection + /// at any time, and the request on it never reached anyone (RFC 9112 9.3.1). + private func exchange( + _ target: URL, headers: [String: String], limit: Int + ) async throws -> (HeldSourceConnection.ResponseHead, Data) { + guard let origin = Origin(target) else { + throw PersistentHTTP1Connection.ConnectionError.unsupportedURL(target) + } + var connection = try checkOut(origin) + do { + return try await run(connection, target: target, headers: headers, limit: limit) + } catch PersistentHTTP1Connection.ConnectionError.staleKeepAlive where connection.requestCount > 1 { + try Task.checkCancellation() + connection = try openFresh(origin) + return try await run(connection, target: target, headers: headers, limit: limit) + } + } + + private func run( + _ connection: PersistentHTTP1Connection, + target: URL, headers: [String: String], limit: Int + ) async throws -> (HeldSourceConnection.ResponseHead, Data) { + let outcome: PersistentHTTP1Connection.Outcome + do { + outcome = try await connection.send(target: target, headers: headers, limit: limit) + } catch { + connection.retire(reason: Task.isCancelled ? "cancelled" : EngineLog.summary(of: error)) + throw error + } + if let reason = outcome.notReusableBecause { + connection.retire(reason: reason) + } else { + checkIn(connection) + } + return (outcome.head, outcome.body) + } + + private func checkOut(_ origin: Origin) throws -> PersistentHTTP1Connection { + lock.lock() + if closed { + lock.unlock() + throw CancellationError() + } + if let pooled = idle.removeValue(forKey: origin) { + lock.unlock() + return pooled + } + lock.unlock() + return try openFresh(origin) + } + + private func openFresh(_ origin: Origin) throws -> PersistentHTTP1Connection { + lock.lock() + if closed { + lock.unlock() + throw CancellationError() + } + nextConnectionID += 1 + let id = nextConnectionID + lock.unlock() + return PersistentHTTP1Connection(origin: origin, label: "\(label)#\(id)") + } + + private func checkIn(_ connection: PersistentHTTP1Connection) { + lock.lock() + if closed { + lock.unlock() + connection.retire(reason: "transport closed") + return + } + var evicted: [PersistentHTTP1Connection] = [] + if let previous = idle[connection.origin] { evicted.append(previous) } + idle[connection.origin] = connection + if idle.count > Self.maxIdleOrigins, + let oldest = idle.filter({ $0.key != connection.origin }) + .min(by: { $0.value.lastUsed < $1.value.lastUsed }) { + idle.removeValue(forKey: oldest.key) + evicted.append(oldest.value) + } + lock.unlock() + for stale in evicted { stale.retire(reason: "origin change") } + } + + struct Origin: Hashable, CustomStringConvertible { + let secure: Bool + let host: String + let port: Int + + init?(_ url: URL) { + guard let host = url.host?.lowercased(), !host.isEmpty, + let scheme = url.scheme?.lowercased(), + scheme == "http" || scheme == "https" else { return nil } + secure = scheme == "https" + self.host = host + port = url.port ?? (secure ? 443 : 80) + } + + var description: String { "\(secure ? "https" : "http")://\(host):\(port)" } + } +} + +/// One HTTP/1.1 keep-alive connection: request, response head, body, and the next request on the +/// same socket. Not safe for concurrent requests; the pool hands it to one caller at a time. +final class PersistentHTTP1Connection: @unchecked Sendable { + private static let readTimeout: TimeInterval = 30 + private static let writeTimeout: TimeInterval = 20 + /// Wall-clock ceiling of one exchange, the same as the ingest session's resource timeout. + private static let exchangeDeadline: TimeInterval = 45 + private static let maxHeadBytes = 128 * 1024 + private static let maxReadBytes = 1 * 1024 * 1024 + /// A refused or redirecting answer is read to its end so the connection survives it; one with a + /// larger body than this is not worth the bytes, and closes the connection instead. + private static let maxDiscardedBodyBytes = 64 * 1024 + + enum ConnectionError: LocalizedError { + case malformed(String) + case tooManyRedirects + case unsupportedURL(URL) + /// The origin closed a reused connection before answering; the request is safe to repeat. + case staleKeepAlive + case deadlineExceeded + + var errorDescription: String? { + switch self { + case .malformed(let detail): return "malformed HTTP response: \(detail)" + case .tooManyRedirects: return "too many redirects" + case .unsupportedURL(let url): return "unsupported URL for a persistent connection: \(url)" + case .staleKeepAlive: return "keep-alive connection closed by the origin" + case .deadlineExceeded: return "response not complete within \(Int(PersistentHTTP1Connection.exchangeDeadline)) s" + } + } + } + + struct Outcome { + let head: HeldSourceConnection.ResponseHead + let body: Data + /// nil when the connection may carry the next request. + let notReusableBecause: String? + } + + private enum Framing { + case identity(remaining: Int64) + case chunked(ChunkedBodyDecoder) + case untilClose + case empty + } + + let origin: PersistentHTTP1Transport.Origin + private let label: String + private let stateLock = NSLock() + private var session: URLSession? + private var task: URLSessionStreamTask? + private var retired = false + private var pending = Data() + private var _requestCount = 0 + private var _lastUsed = Date.distantPast + + init(origin: PersistentHTTP1Transport.Origin, label: String) { + self.origin = origin + self.label = label + } + + var requestCount: Int { stateLock.withLock { _requestCount } } + var lastUsed: Date { stateLock.withLock { _lastUsed } } + + func send(target: URL, headers: [String: String], limit: Int) async throws -> Outcome { + let task = try connectIfNeeded() + let reused = stateLock.withLock { () -> Bool in + _requestCount += 1 + _lastUsed = Date() + return _requestCount > 1 + } + let deadline = Date().addingTimeInterval(Self.exchangeDeadline) + return try await withTaskCancellationHandler { + let request = try HeldSourceConnection.requestBytes( + target: target, host: origin.host, port: origin.port, secure: origin.secure, + offset: nil, extraHeaders: headers, userAgent: nil) + do { + try await task.write(request, timeout: Self.writeTimeout) + } catch { + if reused, !Task.isCancelled { throw ConnectionError.staleKeepAlive } + throw error + } + let head: HeldSourceConnection.ResponseHead + do { + head = try await readHead(task, reused: reused, deadline: deadline) + } catch let error as ConnectionError { + throw error + } catch { + if reused, !Task.isCancelled { throw ConnectionError.staleKeepAlive } + throw error + } + return try await readBody(task, head: head, limit: limit, deadline: deadline) + } onCancel: { + self.retire(reason: "cancelled") + } + } + + /// Closes the socket. Idempotent; the first reason is the one logged. + func retire(reason: String) { + stateLock.lock() + if retired { + stateLock.unlock() + return + } + retired = true + let task = self.task + let session = self.session + let count = _requestCount + self.task = nil + self.session = nil + pending = Data() + stateLock.unlock() + task?.closeRead() + task?.closeWrite() + session?.invalidateAndCancel() + guard task != nil else { return } + EngineLog.emit( + "[HLSVODIngest] AE#732 connection \(label) \(origin) closed after \(count) " + + "request\(count == 1 ? "" : "s") reason=\(reason)", + category: .engine) + } + + // MARK: - Wire + + private func connectIfNeeded() throws -> URLSessionStreamTask { + stateLock.lock() + if retired { + stateLock.unlock() + throw CancellationError() + } + if let task { + stateLock.unlock() + return task + } + let configuration = URLSessionConfiguration.ephemeral + configuration.timeoutIntervalForRequest = Self.readTimeout + configuration.timeoutIntervalForResource = .greatestFiniteMagnitude + let session = URLSession( + configuration: configuration, delegate: EngineTLS.sessionDelegate, delegateQueue: nil) + let task = session.streamTask(withHostName: origin.host, port: origin.port) + self.session = session + self.task = task + stateLock.unlock() + task.resume() + if origin.secure { task.startSecureConnection() } + EngineLog.emit( + "[HLSVODIngest] AE#732 connection \(label) open \(origin) protocol=http/1.1", + category: .engine) + return task + } + + private func readHead( + _ task: URLSessionStreamTask, reused: Bool, deadline: Date + ) async throws -> HeldSourceConnection.ResponseHead { + let separator = Data("\r\n\r\n".utf8) + var head = takePending() + while head.range(of: separator) == nil { + let (chunk, eof) = try await read(task, maxLength: 64 * 1024, deadline: deadline) + if chunk.isEmpty && eof { + if reused, head.isEmpty { throw ConnectionError.staleKeepAlive } + throw ConnectionError.malformed("connection closed before a response head") + } + head.append(chunk) + if head.count > Self.maxHeadBytes { + throw ConnectionError.malformed("no head terminator in \(Self.maxHeadBytes) bytes") + } + } + guard let split = head.range(of: separator) else { + throw ConnectionError.malformed("head terminator vanished") + } + stateLock.withLock { pending = Data(head[split.upperBound...]) } + return try HeldSourceConnection.ResponseHead(rawHead: head[.. Outcome { + let success = (200..<300).contains(head.status) + let cap = success ? limit : Self.maxDiscardedBodyBytes + var framing = Self.framing(for: head) + if case .identity(let length) = framing, length > Int64(cap) { + if success { throw BoundedFetch.Exceeded(limit: limit) } + return Outcome(head: head, body: Data(), notReusableBecause: "status \(head.status) body not drained") + } + var body = Data() + loop: while true { + switch framing { + case .empty: + break loop + case .identity(let remaining): + if remaining <= 0 { break loop } + let data = try await nextBytes(task, upTo: Int(min(remaining, Int64(Self.maxReadBytes))), deadline: deadline) + guard let data else { + throw ConnectionError.malformed("connection closed \(remaining) bytes before the end of the body") + } + body.append(data) + framing = .identity(remaining: remaining - Int64(data.count)) + case .chunked(let decoder): + if let out = try decoder.take(upTo: Self.maxReadBytes) { + body.append(out) + } else if decoder.isComplete { + break loop + } else { + guard let data = try await nextBytes(task, upTo: Self.maxReadBytes, deadline: deadline) else { + throw ConnectionError.malformed("connection closed inside a chunked body") + } + decoder.feed(data) + } + case .untilClose: + guard let data = try await nextBytes(task, upTo: Self.maxReadBytes, deadline: deadline) else { + break loop + } + body.append(data) + } + if body.count > cap { + if success { throw BoundedFetch.Exceeded(limit: limit) } + return Outcome(head: head, body: Data(), notReusableBecause: "status \(head.status) body not drained") + } + } + return Outcome(head: head, body: success ? body : Data(), notReusableBecause: Self.reuseRefusal(head, framing)) + } + + /// Why the connection cannot carry another request after this response, nil when it can. + private static func reuseRefusal(_ head: HeldSourceConnection.ResponseHead, _ framing: Framing) -> String? { + if case .untilClose = framing { return "body framed by close" } + let connection = head.headers["connection"]?.lowercased() ?? "" + if connection.split(separator: ",").contains(where: { $0.trimmingCharacters(in: .whitespaces) == "close" }) { + return "server close" + } + if !head.statusLine.hasPrefix("HTTP/1.1") { return "not HTTP/1.1 (\(head.statusLine.prefix(8)))" } + return nil + } + + private static func framing(for head: HeldSourceConnection.ResponseHead) -> Framing { + if (100..<200).contains(head.status) || head.status == 204 || head.status == 304 { return .empty } + if head.headers["transfer-encoding"]?.lowercased().contains("chunked") == true { + return .chunked(ChunkedBodyDecoder()) + } + if let raw = head.headers["content-length"], let length = Int64(raw), length >= 0 { + return .identity(remaining: length) + } + return .untilClose + } + + /// Bytes left over from the head read first, then the socket. nil is EOF. + private func nextBytes(_ task: URLSessionStreamTask, upTo limit: Int, deadline: Date) async throws -> Data? { + let buffered = stateLock.withLock { () -> Data in + let slice = pending.prefix(limit) + pending.removeFirst(slice.count) + return Data(slice) + } + if !buffered.isEmpty { return buffered } + let (data, eof) = try await read(task, maxLength: limit, deadline: deadline) + if data.isEmpty && eof { return nil } + return data + } + + private func takePending() -> Data { + stateLock.withLock { + let data = pending + pending = Data() + return data + } + } + + private func read( + _ task: URLSessionStreamTask, maxLength: Int, deadline: Date + ) async throws -> (Data, Bool) { + try Task.checkCancellation() + let left = deadline.timeIntervalSinceNow + guard left > 0 else { throw ConnectionError.deadlineExceeded } + let (data, eof) = try await task.readData( + ofMinLength: 1, maxLength: max(1, maxLength), timeout: min(Self.readTimeout, left)) + return (data ?? Data(), eof) + } +} diff --git a/Sources/AetherEngine/IO/HTTPDiscIOReader.swift b/Sources/AetherEngine/IO/HTTPDiscIOReader.swift index 1e805efa4..e1cff9c60 100644 --- a/Sources/AetherEngine/IO/HTTPDiscIOReader.swift +++ b/Sources/AetherEngine/IO/HTTPDiscIOReader.swift @@ -19,7 +19,7 @@ import Foundation /// A source the host warmed with `AetherEngine.prewarm` (#551) is read out of those bytes first /// (#647): the warm has already stated the size and proven range support, so the reader neither /// probes nor refetches the head, and its first request starts at the warm frontier. -final class HTTPDiscIOReader: IOReader, @unchecked Sendable { +final class HTTPDiscIOReader: IOReader, SourceTransferCounting, @unchecked Sendable { private let url: URL private let extraHeaders: [String: String] @@ -45,6 +45,15 @@ final class HTTPDiscIOReader: IOReader, @unchecked Sendable { /// must be able to set it from another thread while a read is in flight. private let cancelLock = NSLock() private var cancelled = false + /// This reader's own share of `lifetimeFetchedBytes`: every response body `fetchWithRetry` + /// received, a rejected or retried one included, since it crossed the link either way. + private let transferLock = NSLock() + private var transferredBytes: Int64 = 0 + + var sourceBytesFetched: Int64 { + transferLock.lock(); defer { transferLock.unlock() } + return transferredBytes + } /// Probes total size and range support with one (retried) `bytes=0-0` request, unless /// `prewarmed` has already stated both. Returns nil if the source is unreachable or answers `200` @@ -56,11 +65,12 @@ final class HTTPDiscIOReader: IOReader, @unchecked Sendable { maxRetries: Int = 3, requestTimeout: TimeInterval = 30, sessionConfiguration: URLSessionConfiguration? = nil, - prewarmed: PrewarmedSource? = nil) { + prewarmed: PrewarmedSource? = nil, + knownSize: Int64? = nil) { let session = Self.makeSession(sessionConfiguration) guard case .size(let size) = Self.resolveSize( url: url, extraHeaders: extraHeaders, session: session, requestTimeout: requestTimeout, - maxRetries: maxRetries, knownSize: prewarmed?.contentLength) else { + maxRetries: maxRetries, knownSize: knownSize ?? prewarmed?.contentLength) else { session.invalidateAndCancel() return nil } @@ -132,7 +142,8 @@ final class HTTPDiscIOReader: IOReader, @unchecked Sendable { } /// `knownSize` skips the range probe. Only a source that has already answered a range request - /// with its total may pass it: the warm, or the reader a fork is made from. + /// with its total may pass it: the warm, or the reader a fork is made from. The one exception is a + /// small file of a disc folder, read whole, where a range-blind origin costs nothing. private static func resolveSize(url: URL, extraHeaders: [String: String], session: URLSession, requestTimeout: TimeInterval, maxRetries: Int, knownSize: Int64?) -> SizeProbe { @@ -285,9 +296,12 @@ final class HTTPDiscIOReader: IOReader, @unchecked Sendable { while true { cancelLock.lock(); let stop = cancelled; cancelLock.unlock() if stop { return nil } - if let r = Self.rangeGet(url: url, extraHeaders: extraHeaders, session: session, - timeout: requestTimeout, offset: offset, length: length), - r.status == 206, !r.body.isEmpty, + let response = Self.rangeGet(url: url, extraHeaders: extraHeaders, session: session, + timeout: requestTimeout, offset: offset, length: length) + if let response, !response.body.isEmpty { + transferLock.lock(); transferredBytes &+= Int64(response.body.count); transferLock.unlock() + } + if let r = response, r.status == 206, !r.body.isEmpty, let contentRange = r.contentRange, Self.parseContentRangeStart(contentRange) == offset { return r.body.count > length ? r.body.prefix(length) : r.body diff --git a/Sources/AetherEngine/IO/IOReader.swift b/Sources/AetherEngine/IO/IOReader.swift index 6a131e575..e753d78a6 100644 --- a/Sources/AetherEngine/IO/IOReader.swift +++ b/Sources/AetherEngine/IO/IOReader.swift @@ -28,6 +28,15 @@ public protocol IOReader: AnyObject, Sendable { var discImageProbeEnabled: Bool { get } } +/// Internal seam for a custom reader that pulls its bytes over the network and counts them, so a +/// session reading through it can report `LiveTelemetry.demuxerBytesFetched` like an `AVIOReader` +/// one does. The engine's own `HTTPDiscIOReader` counts; a host's reader is never asked, and its +/// sessions keep reporting 0 (`AVIOProvider.cumulativeBytesFetched`). +protocol SourceTransferCounting: AnyObject { + /// Bytes received from the origin since the reader was created. + var sourceBytesFetched: Int64 { get } +} + /// Internal seam for finite segmented sources whose natural seek axis is time, /// not a synthetic concatenated byte offset. protocol TimeSeekableIOReader: IOReader { diff --git a/Sources/AetherEngine/IO/ProbeIOReader.swift b/Sources/AetherEngine/IO/ProbeIOReader.swift index 969dc48b5..7463c87c3 100644 --- a/Sources/AetherEngine/IO/ProbeIOReader.swift +++ b/Sources/AetherEngine/IO/ProbeIOReader.swift @@ -42,12 +42,15 @@ final class ProbeHTTPReader: IOReader, @unchecked Sendable { private let reader: AVIOReader let discImageProbeEnabled: Bool - init(url: URL, headers: [String: String], control: ProbeControl) { + init(url: URL, headers: [String: String], control: ProbeControl, + boundedWindowBytes: Int? = nil) { discImageProbeEnabled = Demuxer.isDiscImageURL(url) reader = AVIOReader( url: url, extraHeaders: headers, label: "probe", chunkSize: 64 * 1024, prefetchEnabled: false, - chunkRequestTimeout: 2, chunkMaxRetries: 1, probeControl: control) + chunkRequestTimeout: 2, chunkMaxRetries: 1, + boundedInitialFetch: boundedWindowBytes.map { Int64($0) }, + windowHighWater: boundedWindowBytes, probeControl: control) } func open() throws { try reader.open() } diff --git a/Sources/AetherEngine/Native/AudibleSelectionReadback.swift b/Sources/AetherEngine/Native/AudibleSelectionReadback.swift index 6e559dd9b..87d6fb02c 100644 --- a/Sources/AetherEngine/Native/AudibleSelectionReadback.swift +++ b/Sources/AetherEngine/Native/AudibleSelectionReadback.swift @@ -18,23 +18,25 @@ enum AudibleSelectionReadback { /// One line, bounded: it lands in a 300-line ring buffer a reporter copies out of. /// - /// `served` is the language the master declared, nil when it declared none. `servingMaster` + /// `served` is the language the master declared, nil when it declared none. `declaredUntagged` is a + /// rendition without a LANGUAGE (AE#726, untagged E-AC-3 JOC), which AVFoundation should still list. `servingMaster` /// separates the two ways that happens: a media-direct session has no master to declare anything in, /// and the absent group there is the documented consequence rather than a finding. static func line( served: String?, + declaredUntagged: Bool = false, servingMaster: Bool, groupPresent: Bool, options: [Option], selected: Option? ) -> String { - var parts = ["[AetherEngine] AE#458 audible readback: served=\(served ?? "none")"] + var parts = ["[AetherEngine] AE#458 audible readback: served=\(served ?? (declaredUntagged ? "untagged" : "none"))"] parts.append(servingMaster ? "master" : "media playlist") guard groupPresent, !options.isEmpty else { // A declared rendition that came back as nothing is the reported defect; nothing declared is // not, so only the first earns the AVKit consequence. - parts.append(served != nil + parts.append(served != nil || declaredUntagged ? "no audible group (AVKit labels the track Not Specified)" : "no audible group, as declared") return parts.joined(separator: ", ") diff --git a/Sources/AetherEngine/Native/MasterFallbackDecision.swift b/Sources/AetherEngine/Native/MasterFallbackDecision.swift index 0e9d57817..8716c7d6f 100644 --- a/Sources/AetherEngine/Native/MasterFallbackDecision.swift +++ b/Sources/AetherEngine/Native/MasterFallbackDecision.swift @@ -42,9 +42,13 @@ enum MasterFallbackDecision { /// /// AE#667: nor while a display mode switch is in progress. AVPlayer answers for the mode the panel is /// in at that moment, which mid-switch is the one it is leaving, so the refusal is about the moment. - static func shouldLatchPanelRefusal(code: Int, displayEligibleForHDRNow: Bool, + /// + /// AE#535 (2026-10-11): nor when the refused master advertised `VIDEO-RANGE=SDR`. A refusal of an SDR + /// master says nothing about HDR presentation, yet it latched the HDR route for every later title + /// (cmcpherson274, two SDR titles' -11848 refusals at 7.15.1 and 7.17.1). + static func shouldLatchPanelRefusal(code: Int, servedMasterIsHDR: Bool, displayEligibleForHDRNow: Bool, displaySwitchInProgress: Bool) -> Bool { - isDisplayRejectionCode(code) && displayEligibleForHDRNow && !displaySwitchInProgress + isDisplayRejectionCode(code) && servedMasterIsHDR && displayEligibleForHDRNow && !displaySwitchInProgress } /// Any code that means "AVPlayer rejected the served master itself": the display-rejection pair @@ -58,6 +62,19 @@ enum MasterFallbackDecision { isDisplayRejectionCode(code) || code == -1002 } + /// A malformed media playlist can be wrapped in the same -11848 as a display refusal. + /// It says nothing about HDR support and must not poison the process's display decision. + static func isMasterRejection(_ error: NSError, mediaErrorCodes: [Int] = []) -> Bool { + guard !mediaErrorCodes.contains(-12642) else { return false } + var current: NSError? = error + for _ in 0..<8 { + guard let value = current else { break } + if value.domain == "CoreMediaErrorDomain", value.code == -12642 { return false } + current = value.userInfo[NSUnderlyingErrorKey] as? NSError + } + return isMasterRejectionCode(error.code) + } + /// Fall back to the media playlist only when a master-rejection failed the item, the engine was /// serving the master, and this session has not already fallen back (single-shot, no loop). static func shouldFallBackToMediaPlaylist( diff --git a/Sources/AetherEngine/Native/NativeAVPlayerHost.swift b/Sources/AetherEngine/Native/NativeAVPlayerHost.swift index 5d6f1b71c..f5df1cd8f 100644 --- a/Sources/AetherEngine/Native/NativeAVPlayerHost.swift +++ b/Sources/AetherEngine/Native/NativeAVPlayerHost.swift @@ -5,6 +5,9 @@ import Combine #if os(tvOS) || os(iOS) import MediaPlayer #endif +#if os(iOS) || os(tvOS) || os(visionOS) +import UIKit +#endif /// NativeAVPlayerHost: AVPlayer + AVPlayerLayer wrapper for the HLS-fMP4 loopback path. /// tvOS exposes the HDMI DV/HDR handshake only through AVPlayer-rooted playback, not AVSampleBufferDisplayLayer. @@ -254,6 +257,27 @@ final class NativeAVPlayerHost { /// Applied immediately and replayed onto fresh items across internal reloads so Now Playing title/artwork survives audio-switch/background-reopen seams. private var pendingExternalMetadata: [AVMetadataItem] = [] private var timeObserver: Any? + private var videoFrameTask: Task? + private var diagnosticVideoOutput: AVPlayerItemVideoOutput? + private var videoFrameProgress = VideoFrameProgress() + private var videoFrameSampleAt: Double? + private var videoFrameSummaryAt: Double? + private var videoPresentation = VideoPresentationProgress() + private var hasPresentedVideo = false + private var loadedVideoRanges: [(Double, Double)] = [] + private var loadedVideoObservation: NSKeyValueObservation? + private var videoHealthSummaryAt: Double? + var onVideoPresentationRecovery: ((VideoPresentationProgress.Action, Double) -> Void)? + var pictureInPictureActive = false { + didSet { + // Detach BEFORE AVKit takes the layer, not on the first background polling tick. + if pictureInPictureActive, let output = diagnosticVideoOutput { + playerItem?.remove(output) + diagnosticVideoOutput = nil + videoFrameProgress.reset() + } + } + } private var statusObservation: NSKeyValueObservation? /// One-shot guard; route capability check runs after first .playing, not readyToPlay -- early sampling false-positived the downmix warning on stereo-idle sinks (issue #24). private var didSampleSettledRoute = false @@ -289,7 +313,7 @@ final class NativeAVPlayerHost { /// Monotonic counter tags every load() invocation so multi-attempt sessions produce distinguishable log lines. private static var nextSessionID: Int = 0 - private var sessionID: Int = 0 + private(set) var sessionID: Int = 0 /// AE#446 round 4: which item this host currently holds. Bumped by every `load`/`swapItem`, so a /// caller that latches something about the item can tell when the item under it changed. @@ -425,6 +449,9 @@ final class NativeAVPlayerHost { /// then tunnels it through a 2-channel MAT carrier, so the route's channel count is not a /// statement about the audio and the surround-downmix warning below must not read it as one. var audioIsAtmosStreamCopy: Bool = false + /// Preserve opt-in decoded-output sampling across same-session playlist/item swaps. + var nativeVideoFrameDiagnostics: Bool = false + var nativeVideoFrameRecovery: Bool = false /// Read the item's audio tracks back into `detectedAudioTracks`. Only the remote-HLS bypass needs /// them; the loopback's probe already listed its audio, and the reads are XPC round trips. var readsBackAudioTracks: Bool = false @@ -532,6 +559,7 @@ final class NativeAVPlayerHost { Task { @MainActor in guard let self, self.sessionID == sid else { return } self.isVideoReadyForDisplay = ready + if ready { self.hasPresentedVideo = true } } } @@ -608,6 +636,18 @@ final class NativeAVPlayerHost { } } + // Observe on the item's queue; do not poll a potentially wedged media server on main. + loadedVideoObservation = item.observe(\.loadedTimeRanges, options: [.initial, .new]) { [weak self] item, change in + let ranges = (change.newValue ?? item.loadedTimeRanges).map { value in + let r = value.timeRangeValue + return (r.start.seconds, (r.start + r.duration).seconds) + } + Task { @MainActor in + guard let self, self.sessionID == sid else { return } + self.loadedVideoRanges = ranges + } + } + // KVO fires on AVPlayerItem's queue; Task round-trips to MainActor. statusObservation = item.observe(\.status, options: [.new]) { [weak self] item, _ in let statusStr: String @@ -857,10 +897,14 @@ final class NativeAVPlayerHost { // seekInFlight suppresses currentTime: AVPlayer still reports pre-seek clock until physical landing (issue #37). guard !self.seekInFlight else { return } self.currentTime = value + self.observeVideoPresentation(clock: value) } } avPlayer.replaceCurrentItem(with: item) + if contract.nativeVideoFrameDiagnostics || contract.nativeVideoFrameRecovery { + startVideoFrameDiagnostics(item: item, session: sid) + } // Fold cached counters without a native read. The final reconciliation is requested only // after detach, and never holds up the handover. if let outgoingDiagnostics { @@ -1030,7 +1074,9 @@ final class NativeAVPlayerHost { remoteHLSOriginRefused = true return } - if let code, MasterFallbackDecision.isMasterRejectionCode(code) { + if let error = item.error as NSError?, MasterFallbackDecision.isMasterRejection(error, + mediaErrorCodes: item.errorLog()?.events.map(\.errorStatusCode) ?? []) { + let code = error.code EngineLog.emit( "[NativeAVPlayerHost] #\(sessionID) startup .failed is a master rejection " + "(code=\(code)); signalling engine for media fallback instead of surfacing", @@ -1790,6 +1836,32 @@ final class NativeAVPlayerHost { avPlayer.pause() } + /// AE#711 follow-up: the picture on screen now, for the engine to hold over the gap an in-place + /// swap opens: `replaceCurrentItem` blanks this layer until the next item's first frame, however + /// long the old item was kept. An output belongs to one item and is only attached for the read. + /// nil when no frame arrives inside `timeout`, which the caller treats as "nothing to hold". + func captureDisplayedFrame(timeout: Duration = .milliseconds(500)) async -> CVPixelBuffer? { + guard let item = playerItem else { return nil } + let output = AVPlayerItemVideoOutput(pixelBufferAttributes: [ + kCVPixelBufferIOSurfacePropertiesKey as String: [String: String]() + ]) + item.add(output) + defer { item.remove(output) } + let clock = ContinuousClock() + let deadline = clock.now + timeout + repeat { + // A playing item vends at the host clock, a paused one only at the time it holds. + let itemTime = avPlayer.rate == 0 ? item.currentTime() + : output.itemTime(forHostTime: CACurrentMediaTime()) + if itemTime.isNumeric, + let buffer = output.copyPixelBuffer(forItemTime: itemTime, itemTimeForDisplay: nil) { + return buffer + } + try? await Task.sleep(for: .milliseconds(8)) + } while clock.now < deadline && playerItem === item + return nil + } + /// Synthesize organic end-of-media when the engine determines a tail park is video-exhaustion /// (AetherEngine#169), not a recoverable stall. Sets the same `didReachEnd` the real /// didPlayToEndTime observer sets, so the engine transitions to `.ended` and the host's @@ -1901,8 +1973,8 @@ final class NativeAVPlayerHost { _ = await seek(to: seconds, deadlineSeconds: nil) } - /// Deadline-bounded seek (#65). Returns `true` if AVPlayer physically landed (or no deadline was set), - /// `false` if `deadlineSeconds` elapsed with the seek still pending. On a deadline expiry the in-flight + /// Deadline-bounded seek (#65). Returns `true` only for a successful completion near the target, + /// `false` for an interrupted/clamped seek or a deadline with the seek still pending. On a deadline expiry the in-flight /// `avPlayer.seek` is NOT cancelled (it lands later if it ever can), but `seekInFlight` is cleared for the /// latest generation so the periodic observer resumes publishing AVPlayer's real position, letting the /// engine reconcile a clock that would otherwise stay latched at an unreachable optimistic target. @@ -1928,19 +2000,23 @@ final class NativeAVPlayerHost { } } // Zero tolerances: unbounded tolerances caused AVPlayer to land on arbitrary sync samples for loopback HLS-fMP4 (openradar 44904505). - avPlayer.seek(to: target, toleranceBefore: .zero, toleranceAfter: .zero) { [weak self] _ in + avPlayer.seek(to: target, toleranceBefore: .zero, toleranceAfter: .zero) { [weak self, weak player = avPlayer] finished in + // Sample at completion, before a busy main actor can let playback advance far + // enough to make a successful seek appear to have missed the target. + let actual = player?.currentTime().seconds ?? .nan Task { @MainActor in guard let self else { - if resumeGuard.claim() { cont.resume(returning: true) } + if resumeGuard.claim() { cont.resume(returning: false) } return } + let landed = gen == self.seekGeneration && Self.seekCompletionReachedTarget( + finished: finished, actual: actual, target: seconds) // Settle the clock on a real landing even if the deadline already returned (late landing). // Superseded seek: leave the newer generation's flags intact. if gen == self.seekGeneration { self.seekInFlight = false - let landed = self.avPlayer.currentTime().seconds - if landed.isFinite { - self.currentTime = landed + if actual.isFinite { + self.currentTime = actual // #49: settle renderedTime so sourceTime settles immediately, BUT only when the // landed frame is actually presented (playing or paused shows the target frame). // #123: while still buffering toward the target (`waitingToPlayAtSpecifiedRate`) @@ -1949,19 +2025,27 @@ final class NativeAVPlayerHost { // ahead of the picture for the whole chase, because the 100ms periodic observer is // silent while waiting and cannot walk it back. Hold renderedTime on the frozen // frame; the observer settles it to the target when playback resumes. - if AetherEngine.seekLandingSettlesToTarget( + if landed, AetherEngine.seekLandingSettlesToTarget( bufferingTowardTarget: self.isBufferingTowardSeekTarget) { self.latestSeekRenderedTimePublished = true - self.renderedTime = landed + self.renderedTime = actual } } } - if resumeGuard.claim() { cont.resume(returning: true) } + EngineLog.emit("[NativeAVPlayerHost] seek completion target=\(String(format: "%.2f", seconds)) actual=\(String(format: "%.2f", actual)) finished=\(finished) landed=\(landed) current=\(gen == self.seekGeneration)", category: .engine) + if resumeGuard.claim() { cont.resume(returning: landed) } } } } } + /// A callback can report an interrupted seek or a clamp to the old position. Neither is a + /// landing. Allow sub-second clock rounding, but never accept an unrelated playhead merely + /// because the requested destination is behind it. + nonisolated static func seekCompletionReachedTarget(finished: Bool, actual: Double, target: Double) -> Bool { + finished && actual.isFinite && target.isFinite && abs(actual - target) <= 0.75 + } + /// DV/SMB forward-seek revert fix: wait longer for the seek already in flight WITHOUT issuing a /// new `avPlayer.seek`. A deadline expiry does not cancel the underlying seek (see `seek(to:deadlineSeconds:)`), /// so it is still progressing toward `target` and its completion (which settles `currentTime` for the @@ -2159,7 +2243,138 @@ final class NativeAVPlayerHost { retiredItemDroppedFrames = 0 } + private func startVideoFrameDiagnostics(item: AVPlayerItem, session: Int) { + videoFrameTask = Task { [weak self, weak item] in + while !Task.isCancelled { + guard let item, self?.sampleDiagnosticVideo(item: item, session: session) == true else { return } + do { try await Task.sleep(for: .milliseconds(50)) } + catch { return } + } + } + } + + private func observeVideoPresentation(clock: Double) { + // Both halves are opt-in: an unready layer after an in-place swap can be an audio-first + // join waiting for its IDR, which no host asked the engine to repair or to log. + guard sessionContract.nativeVideoFrameRecovery || sessionContract.nativeVideoFrameDiagnostics else { return } + var foreground = true + #if os(iOS) || os(tvOS) || os(visionOS) + foreground = UIApplication.shared.applicationState == .active + #endif + var eligible = foreground && !pictureInPictureActive && hasPresentedVideo + && playerLayer.superlayer != nil && !playerLayer.isHidden && playerLayer.opacity > 0 + && !playerLayer.bounds.isEmpty && isReady && failure == nil && playIntent + && !seekInFlight && !mountSeekPending && avPlayer.timeControlStatus == .playing + #if !os(visionOS) + eligible = eligible && !avPlayer.isExternalPlaybackActive + #endif + let ahead = Self.contiguousBufferedEnd(ranges: loadedVideoRanges, now: clock) - clock + eligible = eligible && ahead >= 1 + let now = Double(DispatchTime.now().uptimeNanoseconds) / 1_000_000_000 + let duration = detectedVideoFrameRate.flatMap { $0 > 0 ? 1 / $0 : nil } + let age = videoFrameProgress.age(at: now) + // An output which has never yielded a frame is not evidence of decoder failure. + let frozenOutput = videoFrameProgress.samples >= 3 + && (age ?? 0) >= Swift.max(0.35, 3 * (duration ?? 0)) + // Diagnostics alone remain observational. Ready means the FIRST frame was ready, + // so only the separately opted-in recovery policy can act on stalled decoded output. + let stalled = sessionContract.nativeVideoFrameRecovery + && videoFrameProgress.isStalled(at: now, lastSampleAt: videoFrameSampleAt, frameDuration: duration) + let missing = !isVideoReadyForDisplay || stalled + let healthy = !sessionContract.nativeVideoFrameRecovery + || (videoFrameProgress.samples >= 3 && (age ?? .infinity) < Swift.max(0.35, 3 * (duration ?? 0))) + let previousAttempts = videoPresentation.attempts + let action = videoPresentation.observe(clock: clock, now: now, eligible: eligible, + missingVideo: missing, frameDuration: duration, hasHealthyVideo: healthy) + let recovered = previousAttempts > 0 && videoPresentation.attempts == 0 + let summarize = hasPresentedVideo && playIntent && (missing || frozenOutput) + && now - (videoHealthSummaryAt ?? -.infinity) >= 5 + if action != nil || recovered || summarize { + videoHealthSummaryAt = now + let phase = action?.rawValue ?? (recovered ? "resumed" : "sample") + let reason = !isVideoReadyForDisplay ? "layer_unready" : (frozenOutput || stalled ? "output_stalled" : "none") + EngineLog.emit("[NativeVideoHealth] action=\(phase) sid=\(sessionID) clock=\(String(format: "%.3f", clock)) buffer=\(String(format: "%.3f", ahead)) layerReady=\(isVideoReadyForDisplay) frameAge=\(String(format: "%.3f", age ?? -1)) samples=\(videoFrameProgress.samples) attempt=\(videoPresentation.attempts) pip=\(pictureInPictureActive) foreground=\(foreground) eligible=\(eligible) reason=\(reason) repairEnabled=\(sessionContract.nativeVideoFrameRecovery)", category: .engine) + } + if let action, sessionContract.nativeVideoFrameRecovery { + if stalled { videoFrameProgress.beginRecovery() } + onVideoPresentationRecovery?(action, clock) + } + } + + private func sampleDiagnosticVideo(item: AVPlayerItem, session: Int) -> Bool { + guard sessionID == session, playerItem === item, avPlayer.currentItem === item else { return false } + var foreground = true + #if os(iOS) || os(tvOS) || os(visionOS) + foreground = UIApplication.shared.applicationState == .active + #endif + var eligible = foreground && !pictureInPictureActive && detectedVideoFormat == .sdr && isReady + && !seekInFlight && !mountSeekPending + #if !os(visionOS) + eligible = eligible && !avPlayer.isExternalPlaybackActive + #endif + let mayContinueRepair = eligible && playIntent + eligible = eligible && avPlayer.timeControlStatus == .playing && avPlayer.rate > 0 + guard eligible else { + videoFrameProgress.reset(preservingRecovery: mayContinueRepair) + videoFrameSampleAt = nil + videoFrameSummaryAt = nil + // Do not keep an extra video consumer attached across HDR/external/background modes. + if let output = diagnosticVideoOutput { item.remove(output); diagnosticVideoOutput = nil } + return true + } + if diagnosticVideoOutput == nil { + guard isVideoReadyForDisplay else { return true } + let output = AVPlayerItemVideoOutput(pixelBufferAttributes: [ + kCVPixelBufferIOSurfacePropertiesKey as String: [String: String]() + ]) + output.suppressesPlayerRendering = false + item.add(output) + diagnosticVideoOutput = output + EngineLog.emit("[NativeVideoFrames] event=attached sid=\(session) kind=decoded_output", category: .engine) + } + guard let output = diagnosticVideoOutput else { return true } + let itemTime = output.itemTime(forHostTime: CACurrentMediaTime()) + var displayTime = CMTime.invalid + var frame: Double? + if itemTime.isNumeric, output.hasNewPixelBuffer(forItemTime: itemTime), + output.copyPixelBuffer(forItemTime: itemTime, itemTimeForDisplay: &displayTime) != nil, + displayTime.isNumeric { frame = displayTime.seconds } + let now = Double(DispatchTime.now().uptimeNanoseconds) / 1_000_000_000 + if let previous = videoFrameSampleAt, now - previous > 0.25 { + EngineLog.emit("[NativeVideoFrames] event=observer_delay sid=\(session) age=\(String(format: "%.3f", now - previous)) kind=sampling_delay", category: .engine) + videoFrameProgress.reset() + } + videoFrameSampleAt = now + let duration = detectedVideoFrameRate.flatMap { $0 > 0 ? 1 / $0 : nil } + let event = videoFrameProgress.observe(frame: frame, clock: currentTime, now: now, + eligible: eligible, frameDuration: duration) + if let event { + let phase: String, age: Double, advance: Double + switch event { + case .began(let a, let c): phase = "gap"; age = a; advance = c + case .ended(let a): phase = "resumed"; age = a; advance = 0 + } + EngineLog.emit("[NativeVideoFrames] event=\(phase) sid=\(session) clock=\(String(format: "%.3f", currentTime)) frame=\(String(format: "%.3f", videoFrameProgress.frameTime ?? 0)) age=\(String(format: "%.3f", age)) clockAdvance=\(String(format: "%.3f", advance)) samples=\(videoFrameProgress.samples) kind=decoded_output", category: .engine) + } + if videoFrameSummaryAt == nil { videoFrameSummaryAt = now } + if now - (videoFrameSummaryAt ?? now) >= 5 { + videoFrameSummaryAt = now + if let frame = videoFrameProgress.frameTime, let age = videoFrameProgress.age(at: now) { + EngineLog.emit("[NativeVideoFrames] event=sample sid=\(session) clock=\(String(format: "%.3f", currentTime)) frame=\(String(format: "%.3f", frame)) age=\(String(format: "%.3f", age)) clockAdvance=0.000 samples=\(videoFrameProgress.samples) kind=decoded_output", category: .engine) + } else { + EngineLog.emit("[NativeVideoFrames] event=unavailable sid=\(session) kind=decoded_output", category: .engine) + } + } + return true + } + private func unloadCurrentItem(inPlaceSwap: Bool = false) { + videoFrameTask?.cancel(); videoFrameTask = nil + if let output = diagnosticVideoOutput { playerItem?.remove(output) } + diagnosticVideoOutput = nil + videoFrameProgress.reset(preservingRecovery: inPlaceSwap) + videoFrameSampleAt = nil + videoFrameSummaryAt = nil // Invalidating KVO does not cancel callbacks already queued onto the main actor. Retire // their session now so they drop on their `sessionID == sid` guard, including during the // handover gap where the old item is still attached and still producing them. @@ -2181,6 +2396,11 @@ final class NativeAVPlayerHost { waitingReasonObservation = nil seekableObservation?.invalidate() seekableObservation = nil + loadedVideoObservation?.invalidate() + loadedVideoObservation = nil + loadedVideoRanges = [] + videoHealthSummaryAt = nil + if !inPlaceSwap { videoPresentation = VideoPresentationProgress(); hasPresentedVideo = false } layerReadyObservation?.invalidate() layerReadyObservation = nil for obs in notificationObservers { @@ -2266,7 +2486,7 @@ final class NativeAVPlayerHost { for track in tracks { let fourcc: String var extra = "" - if let cm = (try? await track.load(.formatDescriptions))?.first { + if let cm = await Self.formatDescriptions(of: track).first { fourcc = fourccString(CMFormatDescriptionGetMediaSubType(cm)) if track.mediaType == .audio { extra = " " + audioFormatDescription(cm) @@ -2298,7 +2518,7 @@ final class NativeAVPlayerHost { guard let assetTrack = itemTrack.assetTrack else { continue } let fourcc: String var extra = "" - if let cm = (try? await assetTrack.load(.formatDescriptions))?.first { + if let cm = await Self.formatDescriptions(of: assetTrack).first { fourcc = fourccString(CMFormatDescriptionGetMediaSubType(cm)) if assetTrack.mediaType == .audio { extra = " " + audioFormatDescription(cm) @@ -2562,7 +2782,7 @@ final class NativeAVPlayerHost { guard sid != 0, playerItem === item else { return } for itemTrack in item.tracks { guard let assetTrack = itemTrack.assetTrack, assetTrack.mediaType == .video else { continue } - guard let cm = try? await assetTrack.load(.formatDescriptions).first else { continue } + guard let cm = await Self.formatDescriptions(of: assetTrack).first else { continue } let rate = (try? await assetTrack.load(.nominalFrameRate)).map(Double.init) guard sessionID == sid, playerItem === item else { return } let subType = CMFormatDescriptionGetMediaSubType(cm) @@ -2601,7 +2821,7 @@ final class NativeAVPlayerHost { var readings: [RemoteHLSStreamDescription.AudioReading] = [] for itemTrack in item.tracks { guard let assetTrack = itemTrack.assetTrack, assetTrack.mediaType == .audio else { continue } - guard let cm = try? await assetTrack.load(.formatDescriptions).first else { continue } + guard let cm = await Self.formatDescriptions(of: assetTrack).first else { continue } let extendedTag = try? await assetTrack.load(.extendedLanguageTag) let languageCode = try? await assetTrack.load(.languageCode) let language = [extendedTag ?? nil, languageCode ?? nil, selectedOptionLanguage] @@ -2625,7 +2845,7 @@ final class NativeAVPlayerHost { let mediaType = assetTrack?.mediaType.rawValue ?? "?" var fdesc: CMFormatDescription? if let assetTrack { - fdesc = (try? await assetTrack.load(.formatDescriptions))?.first + fdesc = await Self.formatDescriptions(of: assetTrack).first } let fourCC: String if let cm = fdesc { @@ -2644,6 +2864,24 @@ final class NativeAVPlayerHost { } } + /// AE#735: the first audio format description a process builds loads the audio DSP stack through + /// dyld, measured at 3.8 s on an Apple TV 4K. Since the 26 SDKs `load` takes `isolation: = #isolation` + /// and runs on the caller's actor, every caller here is the main actor, so the first readyToPlay of a + /// launch froze the host's UI while the video kept playing. Off the main actor, on a thread that may block. + static func formatDescriptions(of track: AVAssetTrack) async -> [CMFormatDescription] { + let track = UncheckedAssetTrack(value: track) + return await loadOffMainActor { try await track.value.load(.formatDescriptions) } ?? [] + } + + /// The async `load` is AVFoundation's any-thread API; the SDK just does not mark the track Sendable. + private struct UncheckedAssetTrack: @unchecked Sendable { let value: AVAssetTrack } + + nonisolated static func loadOffMainActor( + _ load: @escaping @Sendable () async throws -> Value + ) async -> Value? { + await BlockingWork.detached(priority: .userInitiated) { try? await load() }.value + } + nonisolated private static func videoFormatDescription(_ fmt: CMFormatDescription) -> String { var parts: [String] = [] let dims = CMVideoFormatDescriptionGetDimensions(fmt) @@ -2672,7 +2910,7 @@ final class NativeAVPlayerHost { for itemTrack in item.tracks { guard let assetTrack = itemTrack.assetTrack else { continue } guard assetTrack.mediaType == .audio else { continue } - guard let cm = try? await assetTrack.load(.formatDescriptions).first else { continue } + guard let cm = await Self.formatDescriptions(of: assetTrack).first else { continue } let codec = fourccString(CMFormatDescriptionGetMediaSubType(cm)) if codec.lowercased() == "flac" { isFLAC = true @@ -2722,7 +2960,7 @@ final class NativeAVPlayerHost { for itemTrack in item.tracks { guard let assetTrack = itemTrack.assetTrack else { continue } guard assetTrack.mediaType == .audio else { continue } - guard let cm = try? await assetTrack.load(.formatDescriptions).first else { continue } + guard let cm = await Self.formatDescriptions(of: assetTrack).first else { continue } let codec = fourccString(CMFormatDescriptionGetMediaSubType(cm)) let lower = codec.lowercased() if lower == "ec-3" || lower == "ac-3" { @@ -2733,13 +2971,16 @@ final class NativeAVPlayerHost { break } } - guard !codecID.isEmpty, trackChannels > 2 else { return } + guard !codecID.isEmpty else { return } let session = AVAudioSession.sharedInstance() let routeChannels = max( session.currentRoute.outputs.first?.channels?.count ?? 0, session.outputNumberOfChannels ) - guard routeChannels > 0, routeChannels < trackChannels else { return } + guard surroundDownmixSuspected( + trackChannels: trackChannels, routeChannels: routeChannels, + maximumRouteChannels: session.maximumOutputNumberOfChannels + ) else { return } EngineLog.emit( "[NativeAVPlayerHost] #\(sid) WARNING: \(codecID) \(trackChannels)-channel " + "track playing into a \(routeChannels)-channel route. tvOS will downmix to " @@ -2756,6 +2997,16 @@ final class NativeAVPlayerHost { #endif } + /// PR #740 device round: after an APAC session tvOS keeps the HDMI output in the 2-channel MAT carrier it + /// negotiated, so a following 5.1 `ec-3` item reads `output=2` while the sink still advertises `max=32` + /// and plays the 5.1 intact. Only a sink whose advertised maximum is below the track is a downmix. + nonisolated static func surroundDownmixSuspected( + trackChannels: Int, routeChannels: Int, maximumRouteChannels: Int + ) -> Bool { + guard trackChannels > 2, routeChannels > 0, routeChannels < trackChannels else { return false } + return maximumRouteChannels < trackChannels + } + /// Dump audio route channel capability post-load (route renegotiates on asset load; pre-load poll is stale). outputNumberOfChannels is the actual LPCM limit; EAC3/Atmos bypasses it via bitstream tunnel. nonisolated private static func dumpAudioRoute(sid: Int, phase: String) { // AE#684: the route's own latency rides on the line, per item, beside the item's start. diff --git a/Sources/AetherEngine/Native/RemoteHLSSubtitleProvider.swift b/Sources/AetherEngine/Native/RemoteHLSSubtitleProvider.swift index 6501e83e6..557a695bd 100644 --- a/Sources/AetherEngine/Native/RemoteHLSSubtitleProvider.swift +++ b/Sources/AetherEngine/Native/RemoteHLSSubtitleProvider.swift @@ -95,7 +95,7 @@ final class RemoteHLSSubtitleProvider: HLSSegmentProvider, @unchecked Sendable { cancelDecode() let jobs = Self.fillJobs(tracks: tracks, stores: stores, defaultHeaders: defaultHeaders) guard !jobs.isEmpty else { return } - let task = Task.detached(priority: .utility) { [jobs] in + let task = BlockingWork.detached(priority: .utility) { [jobs] in for job in jobs { if Task.isCancelled { return } await AetherEngine.runExternalSubtitleFill(job: job) @@ -131,7 +131,7 @@ final class RemoteHLSSubtitleProvider: HLSSegmentProvider, @unchecked Sendable { anchorLock.lock() timestampAnchor = .probing anchorLock.unlock() - let task = Task.detached(priority: .utility) { [weak self] in + let task = BlockingWork.detached(priority: .utility) { [weak self] in let anchor = await probe() self?.resolveTimestampAnchor(anchor) } diff --git a/Sources/AetherEngine/Native/SWClockAnchorPolicy.swift b/Sources/AetherEngine/Native/SWClockAnchorPolicy.swift index 44dcc3d76..4ed1971c7 100644 --- a/Sources/AetherEngine/Native/SWClockAnchorPolicy.swift +++ b/Sources/AetherEngine/Native/SWClockAnchorPolicy.swift @@ -11,6 +11,11 @@ import Foundation /// sample PTS is the only way they ever present. `sessionZeroSeconds` is the offset /// the host subtracts from the raw synchronizer clock so the published position /// stays session-relative; the raw clock itself remains the source/subtitle axis. +/// +/// Only a sample AHEAD of the anchor moves it (AE#724). A resume repositions to the keyframe at or +/// before its target, so its first audio arrives up to a whole GOP early (9.984 s for a 17.3 s +/// resume on a 10 s GOP); the video skip threshold and the synchronizer discard that preroll, and +/// a clock moved back onto it published the viewer seconds behind the resume point. enum SWClockAnchorPolicy { /// Tolerance below which the first sample is considered aligned with the load /// anchor. Head-of-stream offsets are a few hundred ms; mid-stream joins are @@ -26,13 +31,27 @@ enum SWClockAnchorPolicy { firstSampleSeconds: Double, toleranceSeconds: Double = SWClockAnchorPolicy.toleranceSeconds) -> Resolution { guard firstSampleSeconds.isFinite, - abs(firstSampleSeconds - initialSeconds) > toleranceSeconds else { + firstSampleSeconds - initialSeconds > toleranceSeconds else { return Resolution(anchorSeconds: initialSeconds, sessionZeroSeconds: 0) } return Resolution(anchorSeconds: firstSampleSeconds, sessionZeroSeconds: max(0, firstSampleSeconds - initialSeconds)) } + /// The session zero a resume establishes before any sample arrives (AE#724). + /// + /// `load(startPosition:)` is a session-axis position like any seek, but on a cold start the + /// session zero only exists once `resolve` has seen the first sample. A resume has to cross + /// the axes before that, or its target reaches the demuxer unconverted: on a source whose + /// timestamps start at 600 s, 17.3 is a position before the first packet, the read lands on + /// the head, and the clock publishes 17.3 over content from 0. The origin counts on the same + /// terms as on a cold start, so a source starting within the tolerance stays zero-based. + static func resumeSessionZero(sourceOriginSeconds: Double, + toleranceSeconds: Double = SWClockAnchorPolicy.toleranceSeconds) -> Double { + guard sourceOriginSeconds.isFinite, sourceOriginSeconds > toleranceSeconds else { return 0 } + return sourceOriginSeconds + } + /// Converts a session-axis position into the source axis. /// /// The host publishes positions session-relative (`raw - sessionZero`), but the diff --git a/Sources/AetherEngine/Native/SoftwarePacketReadAhead.swift b/Sources/AetherEngine/Native/SoftwarePacketReadAhead.swift index fa7a6ad8a..3a7ee53d2 100644 --- a/Sources/AetherEngine/Native/SoftwarePacketReadAhead.swift +++ b/Sources/AetherEngine/Native/SoftwarePacketReadAhead.swift @@ -41,6 +41,14 @@ final class SoftwarePacketReadAhead: @unchecked Sendable { private var reportedProducerQoS: qos_class_t = QOS_CLASS_USER_INITIATED /// Consumer threads currently parked in `read()`. Producer-visible, under `condition`. private var waitingConsumers = 0 + /// True while the producer sits in its park wait, under `condition`. A reader on another thread + /// only gets the lock while the producer is inside `wait()`, so a true read PROVES the park; a + /// counter that stopped moving for a while only suggests it, and a loaded machine breaks that. + private var producerParked = false + var producerParkedForTesting: Bool { + condition.lock(); defer { condition.unlock() } + return producerParked + } private var consumerWaitEvents: UInt64 = 0 private var consumerBlockedSeconds: Double = 0 private var lastStarvationLog: DispatchTime? @@ -230,8 +238,9 @@ final class SoftwarePacketReadAhead: @unchecked Sendable { /// does not hold yet, and the frame before it is the wrong answer. The consumer cursor is not /// touched, so playback reads on from where it stood. func stillRun(atSeconds seconds: Double, maxPackets: Int, maxSpanSeconds: Double, - reorderTail: Int) -> [SoftwareStoredPacket]? { - guard seconds.isFinite, maxPackets > 0 else { return nil } + reorderTail: Int, isCancelled: (() -> Bool)? = nil) -> [SoftwareStoredPacket]? { + guard seconds.isFinite, maxPackets > 0, isCancelled?() != true else { return nil } + let deadline = ContinuousClock.now.advanced(by: .milliseconds(750)) condition.lock() let eligible = !closed && !sourceRepositioning && !resetPending && failure == nil && (frontierLocked(at: seconds).map { $0 > seconds } ?? false) @@ -246,6 +255,9 @@ final class SoftwarePacketReadAhead: @unchecked Sendable { var overflow = false do { try fifo.readHistory(from: anchor.cursor) { data in + if isCancelled?() == true || (isCancelled != nil && ContinuousClock.now >= deadline) { + overflow = true; return false + } let packet = try SoftwareStoredPacket.decode(data) guard packet.streamIndex == video.index else { return true } if run.isEmpty, packet.flags & 1 == 0 { overflow = true; return false } @@ -264,7 +276,7 @@ final class SoftwarePacketReadAhead: @unchecked Sendable { } catch { return nil } - guard reached, !overflow else { return nil } + guard reached, !overflow, isCancelled?() != true else { return nil } return run } @@ -420,8 +432,10 @@ final class SoftwarePacketReadAhead: @unchecked Sendable { while true { condition.lock() while !closed && !resetPending && (sourceRepositioning || ended || failure != nil || shouldParkLocked()) { + producerParked = true condition.wait() } + producerParked = false if closed { condition.unlock(); return } let token = sourceEpoch let reset = resetPending diff --git a/Sources/AetherEngine/Native/SoftwarePlaybackHost.swift b/Sources/AetherEngine/Native/SoftwarePlaybackHost.swift index de54e7980..d34bb3f50 100644 --- a/Sources/AetherEngine/Native/SoftwarePlaybackHost.swift +++ b/Sources/AetherEngine/Native/SoftwarePlaybackHost.swift @@ -111,6 +111,17 @@ final class SoftwarePlaybackHost { /// point it uses for `AVPlayerLayer`. var displayLayer: AVSampleBufferDisplayLayer { renderer.displayLayer } + /// AE#711 follow-up: the picture on screen now, read back from the renderer before a rebuild's + /// `stop()` flushes it, so the engine can hold it over the new host's startup. Falls back to the + /// newest frame enqueued, which a layer that is not on screen is all there is of. + func displayedFrame() -> CVPixelBuffer? { + if #available(visionOS 1.1, *), + let shown = renderer.displayLayer.sampleBufferRenderer.displayedPixelBuffer() { + return shown + } + return renderer.lastEnqueuedFrame + } + /// SW-PiP Phase C: engine-fed cue mirror + PiP gate for the renderer's frame compositor. func updateSubtitleCompositor(cues: [SubtitleCue], enabled: Bool, delaySeconds: Double) { renderer.subtitleCompositor.update(cues: cues, enabled: enabled, delaySeconds: delaySeconds) @@ -276,6 +287,49 @@ final class SoftwarePlaybackHost { /// Disk-spooled DVR rewind ring; non-nil for live sessions with dvrWindowSeconds set. Demux-thread appended (internally locked). nonisolated(unsafe) private var dvrRing: PacketRingBuffer? + /// Same construction path for the live decoder and controlled-source contract fixtures. + @discardableResult + func prepareLiveDVR(windowSeconds window: Double, retention: SoftwareDVRRetentionOptions? = nil) -> PacketRingBuffer? { + let base = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true) + .appendingPathComponent("aether-segments", isDirectory: true) + let scratch = base.appendingPathComponent("dvr-\(UUID().uuidString)", isDirectory: true) + do { + try FileManager.default.createDirectory(at: scratch, withIntermediateDirectories: true) + // The chunk spool's disk budget and the caller's lease cap both apply. + let available = (try? base.resourceValues(forKeys: [.volumeAvailableCapacityKey]))? + .volumeAvailableCapacity.map(Int64.init) + let claim = RetentionClaims.shared.claim(volumeAvailableBytes: available) { + PacketRingBuffer.liveByteBudget(volumeAvailableBytes: $0) + } + let budget = claim.bytes + let ring = try PacketRingBuffer(windowSeconds: window, scratch: scratch, + byteBudget: budget, retention: retention) + claim.track { [weak ring] in ring?.diskBytes ?? 0 } + retentionClaims.append(claim) + dvrRing = ring + EngineLog.emit("[SWHost] DVR ring armed window=\(String(format: "%.0f", window))s budget=\(budget >> 20)MiB scratch=\(scratch.lastPathComponent)", category: .swPlayback) + return ring + } catch { + EngineLog.emit("[SWHost] DVR ring create failed (\(error)); live-only fallback", category: .swPlayback) + dvrRing = nil + return nil + } + } + + @discardableResult + func setLiveDVRLimits(_ limits: LiveDVRLimits, availableBytes: Int64?) -> Bool { + guard let ring = dvrRing else { return false } + return ring.setLimits(limits, availableBytes: availableBytes) + } + var liveDVRBytes: Int? { dvrRing?.retainedBytes } + var liveDVRWindowSeconds: Double? { dvrRing?.retainedWindowSeconds } + var liveDVRResidentFloor: Double? { + guard let pts = dvrRing?.oldestKeyframePts else { return nil } + liveEdgeLock.lock(); defer { liveEdgeLock.unlock() } + guard sessionStartPts.isFinite else { return nil } + return max(0, pts - sessionStartPts) + } + /// AE#560: the live recording sink, read on the demux thread for every source packet. nonisolated(unsafe) fileprivate var recordingSink: LiveRecordingSink? fileprivate let recordingSinkLock = NSLock() @@ -310,7 +364,7 @@ final class SoftwarePlaybackHost { /// It reads the SOURCE axis, the same axis as `SoftwareVideoFrameTime.presentation` and as the /// subtitle cues, so an overlay paced against it needs no conversion. var presentationTimebase: CMTimebase? { - audioOutput?.synchronizer.timebase + audioOutput?.sourceTimebase } /// #311: forwarded to the renderer, which is where a frame is actually handed over. Set through @@ -359,6 +413,7 @@ final class SoftwarePlaybackHost { private let feedLock = NSLock() nonisolated(unsafe) private var _feedCursor: Int = 0 nonisolated(unsafe) private var _sourceEnded = false + nonisolated(unsafe) private var _dvrRecoveryTicket: UUID? /// Audio look-ahead pump cursor (#107 audio chopping): the feeder advances it ahead of /// `_feedCursor`, seek paths reset it alongside `setFeedCursor`. @@ -388,10 +443,49 @@ final class SoftwarePlaybackHost { demuxCondition.unlock() } - nonisolated private func clampFeedCursor(from old: Int, to first: Int) { + nonisolated private var dvrRecoveryPending: Bool { + feedLock.lock(); defer { feedLock.unlock() } + return _dvrRecoveryTicket != nil + } + + /// Park the feeder before scheduling a timeline transition. A cursor-only clamp leaves + /// future samples queued against the old clock, freezing the last frame until it catches up. + nonisolated private func recoverEvictedFeedCursor(from old: Int, ring: PacketRingBuffer) { + let ticket = UUID() + feedLock.lock() + guard _feedCursor == old, _dvrRecoveryTicket == nil, + _seekGeneration == _settledSeekGeneration else { + feedLock.unlock() + return + } + let generation = _seekGeneration + _dvrRecoveryTicket = ticket + feedLock.unlock() + Task { @MainActor [weak self] in + guard let self else { return } + defer { self.finishDVREvictionRecovery(ticket: ticket) } + // A user seek, pause, stop or replacement wins over the queued recovery. + guard !self.stopRequested, self.dvrRing === ring, + self.seekGeneration == generation, self.readFeedCursor() == old, + old < ring.seqBounds.first, + PausedFirstFrame.loopsMayRun(isPlaying: self.isPlaying, + pausedBeforeFirstFrame: self.pausedBeforeFirstFrame), + let target = self.liveDVRResidentFloor else { return } + EngineLog.emit("[SWHost] DVR eviction recovery: cursor=\(old) targetSession=\(target)", + category: .swPlayback) + // Reuse the live seek's decoder/renderer/audio flush, look-ahead reset and + // clock anchor; source reader and finite retention caps remain in place. + await self.seek(to: target) + } + } + + nonisolated private func finishDVREvictionRecovery(ticket: UUID) { feedLock.lock() - if _feedCursor == old { _feedCursor = first } + if _dvrRecoveryTicket == ticket { _dvrRecoveryTicket = nil } feedLock.unlock() + demuxCondition.lock() + demuxCondition.broadcast() + demuxCondition.unlock() } nonisolated private var sourceEnded: Bool { @@ -403,6 +497,7 @@ final class SoftwarePlaybackHost { feedLock.lock() _feedCursor = 0 _sourceEnded = false + _dvrRecoveryTicket = nil _clockArmed = false _clockSessionZero = 0 feedLock.unlock() @@ -647,6 +742,9 @@ final class SoftwarePlaybackHost { /// Set by the engine on background-enter (iOS keepalive) and cleared on foreground. While true the /// combined demux loop drops video packets and paces on the audio renderer, so audio keeps playing in /// the background. The setter broadcasts the demux condition so a parked loop re-evaluates immediately. + /// AE#739: the hardware decoder lost its session while nothing could act on it, or VT refused the + /// rebuild. Paid by `exitBackgroundAudioOnly()`. Main actor only. + private var videoSessionRecoveryOwed = false nonisolated(unsafe) private var _backgroundAudioOnly = false nonisolated var backgroundAudioOnly: Bool { get { flagsLock.lock(); defer { flagsLock.unlock() }; return _backgroundAudioOnly } @@ -788,6 +886,7 @@ final class SoftwarePlaybackHost { audioSourceStreamIndex: Int32?, isLive: Bool = false, dvrWindowSeconds: Double? = nil, + dvrRetention: SoftwareDVRRetentionOptions? = nil, forwardBufferSegments: Int? = nil ) async throws { self.demuxer = dem @@ -805,31 +904,7 @@ final class SoftwarePlaybackHost { // there is no carried-in picture to guard against here (the native path's problem). armReadyForDisplayObserver() - // DVR ring scratch dir mirrors SegmentCache's /aether-segments/ convention. - if isLive, let window = dvrWindowSeconds { - let baseDir = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true) - .appendingPathComponent("aether-segments", isDirectory: true) - let scratch = baseDir.appendingPathComponent("dvr-\(UUID().uuidString)", isDirectory: true) - do { - try FileManager.default.createDirectory(at: scratch, withIntermediateDirectories: true) - // Audit VPERF-101: the same allowance the native path gives this session, so a long - // window on a small volume shrinks instead of filling the disk. - let available = (try? baseDir.resourceValues(forKeys: [.volumeAvailableCapacityKey]))? - .volumeAvailableCapacity.map(Int64.init) - let claim = RetentionClaims.shared.claim(volumeAvailableBytes: available) { - PacketRingBuffer.liveByteBudget(volumeAvailableBytes: $0) - } - let budget = claim.bytes - let ring = try PacketRingBuffer(windowSeconds: window, scratch: scratch, byteBudget: budget) - claim.track { [weak ring] in ring?.diskBytes ?? 0 } - self.retentionClaims.append(claim) - self.dvrRing = ring - EngineLog.emit("[SWHost] DVR ring armed window=\(String(format: "%.0f", window))s budget=\(budget >> 20)MiB scratch=\(scratch.lastPathComponent)", category: .swPlayback) - } catch { - EngineLog.emit("[SWHost] DVR ring create failed (\(error)); live-only fallback", category: .swPlayback) - self.dvrRing = nil - } - } + if isLive, let window = dvrWindowSeconds { _ = prepareLiveDVR(windowSeconds: window, retention: dvrRetention) } // Resolve the audio stream up front so the session-start log and the decoder agree. #133: // live-TS AAC whose codecpar the probe left empty makes av_find_best_stream return -1; the @@ -938,6 +1013,9 @@ final class SoftwarePlaybackHost { videoDecoder.onDecodedFormat = { [weak self] format in self?.onDecodedVideoFormat?(format) } + (videoDecoder as? HardwareVideoDecoder)?.onSessionLost = { [weak self] in + Task { @MainActor [weak self] in self?.handleVideoSessionLost() } + } videoDecoder.onA53Captions = { [weak self] triplets, pts in self?.onA53Captions?(triplets, pts) } @@ -1001,7 +1079,9 @@ final class SoftwarePlaybackHost { self.splitDisplaySetSubtitleStreamIndices = dem.splitDisplaySetSubtitleStreamIndices() // AudioOutput owns the AVSampleBufferRenderSynchronizer (master clock). Created unconditionally: video-only previously got no clock (frozen frame, currentTime=0). Layer attached in play() after the engine hangs it in the view hierarchy (attaching free-floating fails FigVideoQueueRemote -12080 on tvOS 26+). - self.audioOutput = AudioOutput() + let audioOutput = AudioOutput() + self.audioOutput = audioOutput + renderer.setTimeline(audioOutput.timeline) // AE#395 self.audioOutput?.volume = volume self.audioOutput?.setPresentationOffset(seconds: audioDelaySeconds) // AE#464 // AE#395: the route this session plays into, the counterpart of the native host's line. Without @@ -1015,19 +1095,25 @@ final class SoftwarePlaybackHost { resetFeederState() if let start = startPosition, start.isFinite, start > 0 { + // AE#724: the anchor is a session-axis position; on an offset-origin source it is carried + // over before it reaches the demuxer, the skip threshold and the clock, as a seek's is. + let zero = SWClockAnchorPolicy.resumeSessionZero(sourceOriginSeconds: dem.resolvedSourceStartOrigin) + clockSessionZero = zero + let sourceStart = SWClockAnchorPolicy.sourceSeconds(forSession: start, sessionZeroSeconds: zero) // #254: same off-main, deadline-bounded reposition the transport seek uses. A resume into a // remote source that has to scan for its landing would otherwise block the main thread here. - _ = await dem.seekBounded(to: start, timeout: Self.seekBudgetSeconds, on: seekQueue) + _ = await dem.seekBounded(to: sourceStart, timeout: Self.seekBudgetSeconds, on: seekQueue) // This is load()'s only suspension point, so it is also the only place a stop() can land // mid-load. Arming the clock and publishing isReady on a session already torn down would // hand the engine a host it has stopped. guard !stopRequested else { return } // Mirror seek() skip-PTS + clock alignment so demux drops pre-keyframe frames and synchronizer starts at the resume offset. - let startTime = CMTime(seconds: start, preferredTimescale: 90000) + let startTime = CMTime(seconds: sourceStart, preferredTimescale: 90000) videoDecoder.skipUntilPTS = startTime renderer.setSkipThreshold(startTime) initialClockTime = startTime currentTime = start + sourceClockSeconds = sourceStart } else { initialClockTime = .zero } @@ -1046,7 +1132,7 @@ final class SoftwarePlaybackHost { } : nil let initialSourceClock = initialClockTime.seconds let videoReorderDepth = Self.presentationReorderDepth(codecID: vCodecID) - let cacheResult = await Task.detached(priority: .utility) { () throws -> (SoftwarePacketReadAhead, RetentionClaims.Claim)? in + let cacheResult = await BlockingWork.detached(priority: .utility) { () throws -> (SoftwarePacketReadAhead, RetentionClaims.Claim)? in let temp = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true) let available = (try? temp.resourceValues(forKeys: [.volumeAvailableCapacityKey]))? .volumeAvailableCapacity.map(Int64.init) @@ -1292,18 +1378,84 @@ final class SoftwarePlaybackHost { /// Background-enter (iOS keepalive): keep audio flowing, stop feeding video. The demux loop reads the flag. func enterBackgroundAudioOnly() { + guard !backgroundAudioOnly else { return } backgroundAudioOnly = true + EngineLog.emit("[SWHost] background audio-only: dropping video, audio keeps playing", + category: .swPlayback) } /// Foreground return: resume video. Flush the video decoder + renderer (NOT audio) so video resyncs at the /// next keyframe; the synchronizer is already at the audio time, so the keyframe presents promptly. Order /// matters: while backgroundAudioOnly is still true the loop drops video and never touches videoDecoder / /// renderer, so flushing here from the main actor cannot race the demux queue. Clear the flag last. + /// + /// AE#739: the hardware session is rebuilt unconditionally. A screen lock invalidates it, and in + /// audio-only mode nothing decodes video, so nothing could have noticed. Called on every foreground + /// return, so a recovery owed from a loss seen outside audio-only mode (a PiP session, a refused + /// rebuild) is paid here as well. func exitBackgroundAudioOnly() { - guard backgroundAudioOnly else { return } - videoDecoder.flush() - renderer.flush() - backgroundAudioOnly = false + if backgroundAudioOnly { + videoDecoder.flush() + renderer.flush() + let rebuilt = (videoDecoder as? HardwareVideoDecoder)?.rebuildSession() + if rebuilt == false { videoSessionRecoveryOwed = true } + backgroundAudioOnly = false + EngineLog.emit( + "[SWHost] background audio-only left, video resumes at the next keyframe" + + (rebuilt.map { ", hardware session rebuilt=\($0)" } ?? ""), + category: .swPlayback) + } + if videoSessionRecoveryOwed { recoverVideoSession() } + } + + #if DEBUG + func invalidateVideoSessionForTesting() -> Bool { + guard let hw = videoDecoder as? HardwareVideoDecoder else { return false } + hw.invalidateSessionForTesting() + return true + } + #endif + + /// AE#739: the hardware decoder reported its session invalidated by the system. In audio-only mode + /// video is not wanted yet, so the recovery is owed to the foreground return. + private func handleVideoSessionLost() { + guard !stopRequested else { return } + if backgroundAudioOnly { + videoSessionRecoveryOwed = true + EngineLog.emit("[SWHost] AE#739 video session lost in the background, recovery owed to the foreground return", + category: .swPlayback) + return + } + recoverVideoSession() + } + + /// Rebuild the session, then reposition to the playhead: the demuxer lands on the keyframe before it + /// and the seek's skip threshold hides the preroll, so the picture returns on the frame the audio is + /// at instead of freezing until the next keyframe. A live source without a rewind ring cannot go + /// back and picks up at the next keyframe. A refused rebuild stays owed to the next foreground return. + private func recoverVideoSession() { + guard !stopRequested, let hw = videoDecoder as? HardwareVideoDecoder else { + videoSessionRecoveryOwed = false + return + } + guard hw.rebuildSession() else { + videoSessionRecoveryOwed = true + return + } + videoSessionRecoveryOwed = false + if isLive && dvrRing == nil { + EngineLog.emit("[SWHost] AE#739 video session rebuilt on a live source, resuming at the next keyframe", + category: .swPlayback) + return + } + let target = currentTime + EngineLog.emit( + "[SWHost] AE#739 video session rebuilt, repositioning to the playhead at " + + "\(String(format: "%.3f", target))s", + category: .swPlayback) + Task { @MainActor [weak self] in + await self?.seek(to: target) + } } func setRate(_ newRate: Float) { @@ -1412,7 +1564,7 @@ final class SoftwarePlaybackHost { var cacheHit = false if let packetSource, let cacheGeneration { - let preparation = await Task.detached(priority: .userInitiated) { + let preparation = await BlockingWork.detached(priority: .userInitiated) { try packetSource.prepareSeek(cacheGeneration, to: sourceSeconds) }.result guard seekGeneration == generation, !stopRequested else { return .superseded } @@ -1531,6 +1683,44 @@ final class SoftwarePlaybackHost { } } + /// Resident preview only; selection and decode run on the existing still queue. + /// The frozen source/session delta maps actual PTS back through the same axis as seek. + func scrubPreviewFrame(atSessionSeconds seconds: Double, refined: Bool, maxWidth: Int, + isCancelled: @escaping @Sendable () -> Bool) async -> ScrubFrame? { + guard let extractor = resolveStillExtractor() else { return nil } + let source = sourceSeconds(forSession: seconds) + let ring = isLive ? dvrRing : nil + let cache = isLive ? nil : vodPacketReadAhead + let requests = stillRequests + let ticket = requests.next() + return await withCheckedContinuation { continuation in + stillQueue.async { + let cancelled = { isCancelled() || ticket != requests.latest } + guard !cancelled() else { continuation.resume(returning: nil); return } + var actual: Double? + var didRefine = false + var sourceRange: Range? + let reportRange = { (range: Range) in sourceRange = range } + let report = { (pts: Double, precise: Bool) in actual = pts; didRefine = precise } + let image: CGImage? + if let ring { + image = extractor.still(from: ring, targetPts: source, maxWidth: maxWidth, + precise: refined, isCancelled: cancelled, reportTime: report, reportRange: reportRange) + } else if let cache, let run = cache.stillRun(atSeconds: source, + maxPackets: 900, maxSpanSeconds: 12, reorderTail: 16, isCancelled: cancelled) { + image = extractor.still(from: run, targetPts: source, maxWidth: maxWidth, + precise: refined, isCancelled: cancelled, reportTime: report, reportRange: reportRange) + } else { image = nil } + guard let image, let actual, actual.isFinite, !cancelled() else { + continuation.resume(returning: nil); return + } + continuation.resume(returning: ScrubFrame(image: image, + actualSeconds: seconds + actual - source, refined: didRefine, + validRange: sourceRange.map { (seconds + $0.lowerBound - source)..<(seconds + $0.upperBound - source) })) + } + } + } + /// #544: a scrub still for the live DVR window, decoded out of the packet ring. /// /// Takes the session axis, exactly as `seek` does, and converts it with the same `sessionStartPts` @@ -1789,7 +1979,7 @@ final class SoftwarePlaybackHost { let onErrorForGeneration: @Sendable (String, UInt64) -> Void = { [weak self] msg, generation in Task { @MainActor [weak self] in guard let self, self.admitsRead(generation: generation) else { return } - self.failure = PlaybackErrorInfo(kind: .softwarePipelineFailed, message: msg) + self.failure = PlaybackErrorInfo(kind: liveSession ? .liveSourceUnavailable : .softwarePipelineFailed, message: msg) } } let onEndForGeneration: @Sendable (UInt64) -> Void = { [weak self] generation in @@ -1852,20 +2042,24 @@ final class SoftwarePlaybackHost { self?.backgroundAudioOnly ?? false } // #107: the demux loop reports the resolved session-zero offset when it re-anchors - // the clock at a deviating first-sample PTS (mid-stream-joined source). + // the clock at a first-sample PTS far past the anchor (mid-stream-joined source). let onClockAnchored: @Sendable (Double) -> Void = { [weak self] zero in self?.clockSessionZero = zero } if liveSession, let ring { + let getFeederPlaying: @Sendable () -> Bool = { [weak self] in + guard let self else { return false } + return !self.dvrRecoveryPending && !self.seekWindowOpen && getIsPlaying() + } let readCursor: @Sendable () -> Int = { [weak self] in self?.readFeedCursor() ?? 0 } let advanceCursor: @Sendable (Int) -> Void = { [weak self] old in self?.advanceFeedCursor(from: old) } - let clampCursor: @Sendable (Int, Int) -> Void = { [weak self] old, first in - self?.clampFeedCursor(from: old, to: first) + let recoverCursor: @Sendable (Int) -> Void = { [weak self] old in + self?.recoverEvictedFeedCursor(from: old, ring: ring) } let setSourceEnded: @Sendable () -> Void = { [weak self] in self?.sourceEnded = true @@ -1883,6 +2077,10 @@ final class SoftwarePlaybackHost { videoTimeBaseSeconds: vTbSec, audioTimeBaseSeconds: aTbSec, noteEdge: noteEdge, + readerMayAdvance: { [weak self] in + guard let self else { return false } + return !self.dvrRecoveryPending && !self.seekWindowOpen + }, stopRequested: getStopRequested, onError: onError, onSourceEnded: setSourceEnded, @@ -1910,9 +2108,10 @@ final class SoftwarePlaybackHost { audioTimeBaseSeconds: aTbSec, readCursor: readCursor, advanceCursor: advanceCursor, - clampCursor: clampCursor, + recoverCursor: recoverCursor, + seekGeneration: getSeekGeneration, currentRate: currentRate, - isPlaying: getIsPlaying, + isPlaying: getFeederPlaying, stopRequested: getStopRequested, sourceEnded: getSourceEnded, clockArmed: getClockArmed, @@ -1975,7 +2174,7 @@ final class SoftwarePlaybackHost { // MARK: - Live reader loop (DVR sessions) /// Source -> ring (runs regardless of play/pause). Discontinuity reconciliation before ring append so the ring carries one continuous timeline. - nonisolated private static func runLiveReaderLoop( + nonisolated static func runLiveReaderLoop( demuxer: Demuxer, videoStreamIndex: Int32, audioStreamIndex: Int32, @@ -1984,6 +2183,7 @@ final class SoftwarePlaybackHost { videoTimeBaseSeconds: Double, audioTimeBaseSeconds: Double, noteEdge: @Sendable (Double) -> Void, + readerMayAdvance: @Sendable () -> Bool = { true }, stopRequested: @Sendable () -> Bool, onError: @Sendable (String) -> Void, onSourceEnded: @Sendable () -> Void, @@ -2000,6 +2200,17 @@ final class SoftwarePlaybackHost { var discontinuityOffsetSec = 0.0 var loggedSWDiscontinuity = false var lastSeenExtradata: Data? = nil + let replayReader = LiveReplayPacketReader(videoIndex: videoStreamIndex, audioIndex: audioStreamIndex, + videoTimeBase: videoTimeBaseSeconds, audioTimeBase: audioTimeBaseSeconds) + + func awaitReaderAdmission() -> Bool { + condition.lock() + while !readerMayAdvance() && !stopRequested() { + _ = condition.wait(until: Date(timeIntervalSinceNow: 0.05)) + } + condition.unlock() + return !stopRequested() + } defer { condition.lock() @@ -2010,7 +2221,8 @@ final class SoftwarePlaybackHost { func readerIteration() -> Bool { let packet: UnsafeMutablePointer? do { - packet = try demuxer.readPacket() + guard awaitReaderAdmission() else { return false } + packet = try replayReader.read(isCurrent: { !stopRequested() }) { try demuxer.readPacket() } } catch { // Audit SEG-104: a stop closes the demuxer, which aborts a parked read. That is the // stop arriving, not a lost source. @@ -2026,6 +2238,14 @@ final class SoftwarePlaybackHost { return false } + // Keep the recovery target resident until its decoder/clock transition settles, + // including a source read that was already in flight when recovery began. + guard awaitReaderAdmission() else { + var stale: UnsafeMutablePointer? = packet + av_packet_free(&stale) + return false + } + // AE#560: record before any branch. The DVR ring append further down sits inside // `if let ring`, so a tap placed there would silently do nothing for a live session // loaded without dvrWindowSeconds. @@ -2162,7 +2382,8 @@ final class SoftwarePlaybackHost { audioTimeBaseSeconds: Double, readCursor: @Sendable () -> Int, advanceCursor: @Sendable (Int) -> Void, - clampCursor: @Sendable (Int, Int) -> Void, + recoverCursor: @Sendable (Int) -> Void, + seekGeneration: @Sendable () -> UInt64, currentRate: @Sendable () -> Float, isPlaying: @Sendable () -> Bool, stopRequested: @Sendable () -> Bool, @@ -2181,10 +2402,13 @@ final class SoftwarePlaybackHost { var hadLead = false var rebuffering = false var lastLowLeadLog = DispatchTime(uptimeNanoseconds: 0) + var feederGeneration = seekGeneration() func pumpAudio(epoch audioEpoch: UInt64) { guard let aDec = audioDecoder, let aOut = audioOutput, audioStreamIndex >= 0 else { return } var seq = audioLookahead.align(to: readCursor()) func pumpIteration() -> Bool { + guard readCursor() >= ring.seqBounds.first, + seekGeneration() == feederGeneration else { return false } let armed = clockArmed() guard AudioLookaheadPolicy.decide( clockArmed: armed, @@ -2240,7 +2464,8 @@ final class SoftwarePlaybackHost { // every later sample lands in the clock's past (continuous chopping that never // recovers). Pause the clock, refill, resume; the native path gets the same // behavior from AVPlayer's stall handling. - if clockArmed(), isPlaying() { + if clockArmed(), isPlaying(), readCursor() >= ring.seqBounds.first, + seekGeneration() == feederGeneration { let lastPTS = audioLookahead.lastFedAudioPTS let lead = lastPTS.isFinite ? lastPTS - aOut.currentTimeSeconds : 0 switch AudioLookaheadPolicy.clockAction( @@ -2300,22 +2525,31 @@ final class SoftwarePlaybackHost { return true } - // Keep the audio renderer topped up before (possibly expensive) video work. - pumpAudio(epoch: audioEpoch) - + let generation = seekGeneration() + if generation != feederGeneration { + feederGeneration = generation + preArmPacketsFed = 0 + hadLead = false + rebuffering = false + } let cursor = readCursor() let bounds = ring.seqBounds if cursor < bounds.first { - // Paused/behind longer than the retention window: the - // packets under the cursor were evicted. Clamp to the - // oldest retained packet (keyframe-aligned by eviction). - EngineLog.emit( - "[SWHost] feeder cursor \(cursor) fell below window (first=\(bounds.first)); clamping", - category: .swPlayback - ) - clampCursor(cursor, bounds.first) + // Recover BEFORE audio look-ahead can enqueue retained packets on the old clock. + // Empty/oversized GOPs wait for a retained keyframe instead of inventing a target. + if ring.oldestKeyframePts != nil { + recoverCursor(cursor) + } else { + condition.lock() + _ = condition.wait(until: Date(timeIntervalSinceNow: 0.25)) + condition.unlock() + } return true } + // Audio is pumped only after an evicted cursor has been recovered onto the new clock. + pumpAudio(epoch: audioEpoch) + guard isPlaying(), seekGeneration() == generation, readCursor() == cursor, + cursor >= ring.seqBounds.first else { return true } // Audio the pump already delivered: consume the slot without reading it back, the // pump read it once already (audit PERF-101). if cursor < audioLookahead.current, ring.isVideo(atSeq: cursor) == false { @@ -2356,7 +2590,9 @@ final class SoftwarePlaybackHost { // Back-pressure against renderer queue; also bail on pause without consuming. // The wait can outlast the audio lead, so keep pumping audio while parked. var waitTicks = 0 - while !renderer.isReadyForMoreMediaData && !stopRequested() && isPlaying() { + while !renderer.isReadyForMoreMediaData && !stopRequested() && isPlaying() + && seekGeneration() == generation && readCursor() == cursor + && cursor >= ring.seqBounds.first { autoreleasepool { Thread.sleep(forTimeInterval: 0.005) waitTicks += 1 @@ -2384,7 +2620,8 @@ final class SoftwarePlaybackHost { } } if stopRequested() { return false } - if !isPlaying() { return true } + if !isPlaying() || seekGeneration() != generation || readCursor() != cursor + || cursor < ring.seqBounds.first { return true } } else if cursor < audioLookahead.current { // Audio the pump already delivered: consume the slot without re-decoding. advanceCursor(cursor) @@ -2508,6 +2745,10 @@ final class SoftwarePlaybackHost { var frameIntervalSec = 0.0 var discontinuityOffsetSec = 0.0 var loggedSeamCount = 0 + let replayReader = isLive ? LiveReplayPacketReader(videoIndex: videoStreamIndex, + audioIndex: audioStreamIndex, videoTimeBase: videoTimeBaseSeconds, + audioTimeBase: audioTimeBaseSeconds) : nil + var replayGeneration = seekGeneration() // Clock-arming fallback bookkeeping: a declared audio track whose // decoder never produces buffers (corrupt stream) must not leave @@ -2796,7 +3037,17 @@ final class SoftwarePlaybackHost { if let readAhead { packet = try readAhead.read(isCurrent: { admitsRead(genBeforeRead) })?.makeAVPacket() } else { - packet = try demuxer.readPacket(isCurrent: { admitsRead(genBeforeRead) }) + if replayGeneration != genBeforeRead { + replayReader?.reset() + replayGeneration = genBeforeRead + } + if let replayReader { + packet = try replayReader.read(isCurrent: { admitsRead(genBeforeRead) }) { + try demuxer.readPacket(isCurrent: { admitsRead(genBeforeRead) }) + } + } else { + packet = try demuxer.readPacket(isCurrent: { admitsRead(genBeforeRead) }) + } } } catch { // Stop/seek cancellation is not a playback failure, including a normal .closed @@ -3076,7 +3327,7 @@ final class SoftwarePlaybackHost { } // Arm clock on first decoded audio buffer; latch so subsequent packets don't snap clock back. if !clockArmed(), !buffers.isEmpty { - // #107: anchor at the buffer PTS when it deviates from the load anchor + // #107: anchor at the buffer PTS when it lies far past the load anchor // (mid-stream-joined source); aligned sources keep the anchor verbatim. let firstPts = CMSampleBufferGetPresentationTimeStamp(buffers[0]) let resolution = SWClockAnchorPolicy.resolve( @@ -3128,6 +3379,9 @@ final class SoftwarePlaybackHost { guard !self.seekInFlight else { return } let raw = aOut.currentTimeSeconds self.emitDiagIfDue(clock: raw) + // AE#724: until the first sample arms it, the synchronizer still reads 0, and a paused + // resume would publish that over the anchor load() set. + if !self.isLive, !self.clockArmed { return } if raw.isFinite, raw >= 0 { self.vodPacketReadAhead?.updatePlayhead(raw) // Raw clock = source/subtitle axis; published alongside the mapped position (#107). diff --git a/Sources/AetherEngine/Native/SoftwareStillExtractor.swift b/Sources/AetherEngine/Native/SoftwareStillExtractor.swift index ab9d28d21..646b832f5 100644 --- a/Sources/AetherEngine/Native/SoftwareStillExtractor.swift +++ b/Sources/AetherEngine/Native/SoftwareStillExtractor.swift @@ -68,28 +68,58 @@ final class SoftwareStillExtractor: @unchecked Sendable { /// /// Every request is an independent landing, so the decoder is flushed first: a still is a seek, /// and carrying references across two unrelated positions is what produces a smeared picture. - func still(from ring: PacketRingBuffer, targetPts: Double, maxWidth: Int) -> CGImage? { + func still(from ring: PacketRingBuffer, targetPts: Double, maxWidth: Int, + precise: Bool = true, isCancelled: @escaping () -> Bool = { false }, + reportTime: ((Double, Bool) -> Void)? = nil, + reportRange: ((Range) -> Void)? = nil) -> CGImage? { guard isOpen, timeBaseSeconds > 0, maxWidth > 0 else { return nil } guard let run = ring.stillRun(target: targetPts, maxPackets: limits.maxPackets, maxSpanSeconds: limits.maxSpanSeconds, - reorderTail: limits.reorderTail), + reorderTail: limits.reorderTail, isCancelled: reportTime == nil ? nil : isCancelled), !run.isEmpty else { return nil } + // Preview is stricter than the legacy ring's end clamp: no live-edge + // picture can stand in for a target beyond the retained packet frontier. + if reportTime != nil && !run.contains(where: { $0.pts >= targetPts }) { return nil } - return decodeRun(targetPts: targetPts, maxWidth: maxWidth) { - for packet in run { feed(packet) } + if let first = run.first { + let end = run.dropFirst().first(where: { $0.isKeyframe })?.pts + ?? run.map(\.pts).max() + if let end, end > first.pts { reportRange?(first.pts.. CGImage? { + func still(from run: [SoftwareStoredPacket], targetPts: Double, maxWidth: Int, + precise: Bool = true, isCancelled: @escaping () -> Bool = { false }, + reportTime: ((Double, Bool) -> Void)? = nil, + reportRange: ((Range) -> Void)? = nil) -> CGImage? { guard isOpen, maxWidth > 0, let first = run.first, first.flags & AV_PKT_FLAG_KEY != 0 else { return nil } - return decodeRun(targetPts: targetPts, maxWidth: maxWidth) { + let video = run.filter { $0.streamIndex == videoStreamIndex && $0.pts != Int64.min && $0.timeBaseDenominator > 0 } + func seconds(_ packet: SoftwareStoredPacket) -> Double { + Double(packet.pts) * Double(packet.timeBaseNumerator) / Double(packet.timeBaseDenominator) + } + if let first = video.first { + let end = video.dropFirst().first(where: { $0.flags & AV_PKT_FLAG_KEY != 0 }).map(seconds) + ?? video.map(seconds).max() + let start = seconds(first) + if let end, end > start { reportRange?(start..? = p defer { trackedPacketFree(&packet) } @@ -99,7 +129,9 @@ final class SoftwareStillExtractor: @unchecked Sendable { } } - private func decodeRun(targetPts: Double, maxWidth: Int, feedRun: () -> Void) -> CGImage? { + private func decodeRun(targetPts: Double, maxWidth: Int, precise: Bool, + isCancelled: @escaping () -> Bool, reportTime: ((Double, Bool) -> Void)?, + feedRun: (() -> Bool) -> Void) -> CGImage? { let collector = FrameCollector(target: targetPts) decoder.onFrame = { pixelBuffer, pts, _ in collector.append(pixelBuffer: pixelBuffer, seconds: pts.seconds) @@ -107,10 +139,16 @@ final class SoftwareStillExtractor: @unchecked Sendable { decoder.flush(resetFilterGraph: false) defer { decoder.onFrame = nil } - feedRun() + let deadline = ContinuousClock.now.advanced(by: .milliseconds(750)) + feedRun { isCancelled() || (reportTime != nil && ContinuousClock.now >= deadline) + || (!precise && collector.hasFrame) } - guard let best = collector.best else { return nil } - return Self.image(from: best, maxWidth: maxWidth) + let didRefine = precise && collector.coversTarget + let selected = reportTime != nil && didRefine ? collector.refinedBest : collector.best + guard !isCancelled(), reportTime == nil || ContinuousClock.now < deadline, + let best = selected else { return nil } + reportTime?(best.seconds, didRefine) + return Self.image(from: best.pixelBuffer, maxWidth: maxWidth) } // MARK: - Feeding @@ -139,8 +177,8 @@ final class SoftwareStillExtractor: @unchecked Sendable { /// Keeps the best candidate as the run decodes rather than every frame it produced. The buffers /// come out of the decoder's own pool, so holding a whole GOP of them would starve the pool the - /// next run has to draw from. Two are enough: the one the target asks for, and the oldest as the - /// fallback below. + /// next run has to draw from. Keep at most two: before/after the target, or + /// the earliest fallback and the candidate after an evicted target. /// /// `onFrame` is `@Sendable` and the decoder calls it from its own drain, so the box is locked /// even though the run itself is serial. @@ -149,6 +187,8 @@ final class SoftwareStillExtractor: @unchecked Sendable { private let target: Double private var atOrBefore: (pixelBuffer: CVPixelBuffer, seconds: Double)? private var earliest: (pixelBuffer: CVPixelBuffer, seconds: Double)? + private var atOrAfter: (pixelBuffer: CVPixelBuffer, seconds: Double)? + private var reachedTarget = false init(target: Double) { self.target = target @@ -158,12 +198,17 @@ final class SoftwareStillExtractor: @unchecked Sendable { guard seconds.isFinite else { return } lock.lock() defer { lock.unlock() } - if earliest == nil || seconds < earliest!.seconds { + if seconds >= target { reachedTarget = true } + if seconds >= target, atOrAfter == nil || seconds < atOrAfter!.seconds { + atOrAfter = (pixelBuffer, seconds) + } + if atOrBefore == nil && (earliest == nil || seconds < earliest!.seconds) { earliest = (pixelBuffer, seconds) } guard seconds <= target else { return } if atOrBefore == nil || seconds > atOrBefore!.seconds { atOrBefore = (pixelBuffer, seconds) + earliest = nil } } @@ -174,10 +219,22 @@ final class SoftwareStillExtractor: @unchecked Sendable { /// keyframe was dropped between the index snapshot and the disk read and the run therefore /// begins AFTER the target. Returning the earliest frame there is a picture from up to one /// GOP late, which is a better answer than an empty card. - var best: CVPixelBuffer? { + var hasFrame: Bool { + lock.lock(); defer { lock.unlock() } + return earliest != nil || atOrBefore != nil + } + var coversTarget: Bool { + lock.lock(); defer { lock.unlock() } + return atOrBefore != nil && reachedTarget + } + var best: (pixelBuffer: CVPixelBuffer, seconds: Double)? { lock.lock() defer { lock.unlock() } - return (atOrBefore ?? earliest)?.pixelBuffer + return atOrBefore ?? earliest + } + var refinedBest: (pixelBuffer: CVPixelBuffer, seconds: Double)? { + lock.lock(); defer { lock.unlock() } + return atOrAfter } } diff --git a/Sources/AetherEngine/Network/HLSLocalServer.swift b/Sources/AetherEngine/Network/HLSLocalServer.swift index 1a39ac534..2f23f1918 100644 --- a/Sources/AetherEngine/Network/HLSLocalServer.swift +++ b/Sources/AetherEngine/Network/HLSLocalServer.swift @@ -24,6 +24,11 @@ protocol HLSSegmentProvider: AnyObject { /// Default forwards to `mediaSegment(at:)` without ever signalling. func mediaSegment(at index: Int, onSlow: (@Sendable () -> Void)?) -> Data? + /// As above, but a VOD segment that is still being written may come back as a reader over it, + /// which the server sends chunk by chunk (`LoadOptions.progressiveSegmentDelivery`). Default + /// wraps `mediaSegment(at:onSlow:)`. + func mediaSegmentSource(at index: Int, onSlow: (@Sendable () -> Void)?) -> SegmentSource? + /// Optional file URL for disk-backed segments (cache adopt path). Server streams file -> socket bypassing Foundation Data; sendfile(2) was tried but SIGSYS'd on tvOS sandbox. /// Must name a file that exists: the server stats and opens it afterwards, and a URL whose file /// has gone is answered with an error response rather than the bytes the bookkeeping promised. @@ -35,6 +40,10 @@ protocol HLSSegmentProvider: AnyObject { /// request needs to know whether that request was answered. Default ignores it. func didServeMediaSegment(index: Int, delivered: Bool) + /// One more chunk of a progressively delivered segment left the server: the request-counting + /// wedge watchdog's evidence that AVPlayer is still reading. Default ignores it. + func didDeliverProgressiveChunk(index: Int) + var segmentCount: Int { get } func segmentDuration(at index: Int) -> Double @@ -60,6 +69,9 @@ protocol HLSSegmentProvider: AnyObject { /// Session-stable TARGETDURATION for a live playlist. Production providers seal the first resolved /// value so later cadence or visible-segment growth cannot mutate RFC 8216 playlist timing. func liveTargetDurationSeconds(maxSegmentDuration: Double) -> Int + var livePlaylistGeneration: Int { get } + func livePlaylistEndIndex(generation: Int) -> Int? + func liveTargetDurationSeconds(maxSegmentDuration: Double, generation: Int) -> Int /// #316: a master to serve VERBATIM instead of building one from the metadata below. The remote-HLS /// subtitle proxy fills this with the origin's own master, rewritten to absolute URIs plus the @@ -85,7 +97,17 @@ protocol HLSSegmentProvider: AnyObject { /// AE#458: the muxed audio track's language (ISO 639-2/T) and display NAME for the master's /// EXT-X-MEDIA:TYPE=AUDIO tag. Nil leaves the master without an audio group, which is what an /// untagged source gets. A muxed rendition carries no URI: the audio is inside the variant. - var masterAudioRendition: (language: String, name: String)? { get } + /// AE#726: `language` is nil for an untagged E-AC-3 JOC track, which still gets a rendition because + /// its CHANNELS is the only place the master can declare object audio. + var masterAudioRendition: (language: String?, name: String)? { get } + + /// CHANNELS for that same EXT-X-MEDIA tag, nil to omit it. Apple's HLS Authoring Spec makes the + /// attribute REQUIRED on an audio rendition, and Dolby's DD+ delivery kit makes it the ONLY + /// playlist-level statement that a rendition carries objects: `"/JOC"` (n = the JOC object + /// count, `complexity_index_type_a`) for E-AC-3 + JOC, a bare channel count otherwise. Without it + /// AVFoundation has nothing above the segment layer that says "object audio" and settles on the + /// bed, which is how an Atmos stream-copy reached an Atmos-capable receiver as 5.1 PCM. + var masterAudioChannels: String? { get } /// Native subtitle renditions (#15): one per text track, for the master EXT-X-MEDIA:TYPE=SUBTITLES tags /// and the /subs_{N} endpoints. Empty unless prepareNativeSubtitles is on and the cue stores are threaded. @@ -149,9 +171,19 @@ protocol HLSSegmentProvider: AnyObject { } extension HLSSegmentProvider { + var livePlaylistGeneration: Int { 0 } + func livePlaylistEndIndex(generation: Int) -> Int? { nil } + func liveTargetDurationSeconds(maxSegmentDuration: Double, generation: Int) -> Int { + liveTargetDurationSeconds(maxSegmentDuration: maxSegmentDuration) + } + func mediaSegment(at index: Int, onSlow: (@Sendable () -> Void)?) -> Data? { mediaSegment(at: index) } + func mediaSegmentSource(at index: Int, onSlow: (@Sendable () -> Void)?) -> SegmentSource? { + mediaSegment(at: index, onSlow: onSlow).map { .data($0) } + } func mediaSegmentURL(at index: Int) -> URL? { nil } func didServeMediaSegment(index: Int, delivered: Bool) {} + func didDeliverProgressiveChunk(index: Int) {} var staticMasterPlaylistBody: String? { nil } var firstVisibleSegmentIndex: Int { 0 } func segmentIsDiscontinuous(at index: Int) -> Bool { false } @@ -166,7 +198,8 @@ extension HLSSegmentProvider { var masterAverageBandwidth: Int? { nil } var masterHDCPLevel: String? { nil } var masterClosedCaptions: String? { nil } - var masterAudioRendition: (language: String, name: String)? { nil } + var masterAudioRendition: (language: String?, name: String)? { nil } + var masterAudioChannels: String? { nil } var nativeSubtitleRenditions: [(ordinal: Int, language: String?, name: String, isForced: Bool)] { [] } var nativeSubtitleDefaultOrdinal: Int { 0 } var nativeSubtitleWholeProgram: Bool { false } @@ -322,7 +355,28 @@ final class HLSLocalServer: @unchecked Sendable { // is still the playlist AVPlayer must open, or the injected renditions never reach media selection. let hasMaster = provider?.masterCodecs != nil || provider?.staticMasterPlaylistBody != nil let path = hasMaster ? "master.m3u8" : "media.m3u8" - return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/\(path)") + return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/\(livePlaylistPrefix)\(path)") + } + + private var livePlaylistPrefix: String { + let generation = provider?.livePlaylistGeneration ?? 0 + return generation == 0 ? "" : "live-\(generation)/" + } + + func renewedLivePlaylistURL(replacing url: URL) -> URL? { + stateLock.lock(); defer { stateLock.unlock() } + guard port > 0, provider?.playlistType == .live, + url.port == Int(port), Self.pathAfterToken(pathToken, in: url.path) != nil else { return nil } + var components = URLComponents(url: url, resolvingAgainstBaseURL: false) + components?.path = "/\(pathToken)/\(livePlaylistPrefix)\(url.lastPathComponent)" + return components?.url + } + + static func livePlaylistRoute(_ path: String) -> (path: String, generation: Int) { + let parts = path.split(separator: "/", maxSplits: 1) + guard parts.count == 2, parts[0].hasPrefix("live-"), + let generation = Int(parts[0].dropFirst(5)), generation > 0 else { return (path, 0) } + return ("/" + parts[1], generation) } /// Direct media.m3u8 URL, bypassing master-playlist variant selection (used when the DV/HDR handshake is unavailable so AVPlayer doesn't try to match a dvh1 master on an SDR panel). @@ -330,7 +384,7 @@ final class HLSLocalServer: @unchecked Sendable { stateLock.lock() defer { stateLock.unlock() } guard port > 0 else { return nil } - return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/media.m3u8") + return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/\(livePlaylistPrefix)media.m3u8") } /// HDR-preserving reduced master (#98): source VIDEO-RANGE kept, no SUPPLEMENTAL-CODECS @@ -339,7 +393,7 @@ final class HLSLocalServer: @unchecked Sendable { stateLock.lock() defer { stateLock.unlock() } guard port > 0, provider?.masterCodecs != nil else { return nil } - return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/master_hdr.m3u8") + return URL(string: "http://127.0.0.1:\(port)/\(pathToken)/\(livePlaylistPrefix)master_hdr.m3u8") } /// Numeric address of the peer on an accepted connection, or nil if the socket is already gone (#227 diag). @@ -397,6 +451,9 @@ final class HLSLocalServer: @unchecked Sendable { private var listenFd: Int32 = -1 private var shouldStop = false + /// Bumped by every start and stop, so an accept loop from an earlier start exits even when a + /// later start has cleared `shouldStop` again. + private var listenGeneration: UInt64 = 0 private var clientFds = Set() /// Audit SUB-107: whether `pathToken` is registered with the log redactor. The token is the @@ -502,6 +559,9 @@ final class HLSLocalServer: @unchecked Sendable { /// Audit NET-13: one line per failed accept, when the process is out of descriptors, is a busy /// loop that floods the host's log ring. Failures back off and their line is rate limited. private static let acceptFailureBackoffMicroseconds: useconds_t = 100_000 + /// How long the accept loop waits for a connection before it checks for a stop again. Also the + /// longest a stopped server keeps its port. + static let acceptPollMilliseconds: Int32 = 100 private var acceptFailureLog = LogThrottle(interval: 5) private var refusalLog = LogThrottle(interval: 5) /// Audit NET-111: every line a connection that never presented the token can cause shares this, so @@ -615,6 +675,8 @@ final class HLSLocalServer: @unchecked Sendable { listenFd = fd port = assignedPort shouldStop = false + listenGeneration &+= 1 + let generation = listenGeneration if !tokenRegistered { tokenRegistered = LogRedaction.register(pathToken) } @@ -623,7 +685,10 @@ final class HLSLocalServer: @unchecked Sendable { EngineLog.emit("[HLSLocalServer] Listening on port \(assignedPort)", category: .hlsServer) - let accepter = Thread { [weak self] in self?.acceptLoop() } + let accepter = Thread { [weak self] in + guard let self else { close(fd); return } + self.acceptLoop(listenFd: fd, generation: generation) + } accepter.name = "com.aetherengine.hls.accept" accepter.qualityOfService = .userInitiated accepter.start() @@ -632,15 +697,20 @@ final class HLSLocalServer: @unchecked Sendable { func stop() { stateLock.lock() shouldStop = true - let fdToClose = listenFd listenFd = -1 + listenGeneration &+= 1 let closingPort = port port = 0 loggedMasterPlaylist = false loggedReducedMasterPlaylist = false loggedMediaPlaylist = false mediaPlaylistBuildCount = 0 - let clients = clientFds + // Under the lock: a handler removes its fd here before it closes it, so a number still in the + // set is still that handler's. Shut down outside the lock, the handler could close in between + // and the number go to another socket in the process, whose connection this then ended + // (an origin read with no response, a body cut short). + for fd in clientFds { shutdown(fd, SHUT_RDWR) } + let clientCount = clientFds.count clientFds.removeAll() let unregisterToken = tokenRegistered tokenRegistered = false @@ -651,29 +721,31 @@ final class HLSLocalServer: @unchecked Sendable { // AE#597: the one line that says a listener went away. Without it a log cannot tell a // server that was released from one that outlived its session on a port of its own. EngineLog.emit( - "[HLSLocalServer] stop: port \(closingPort) released, \(clients.count) connection(s) " + "[HLSLocalServer] stop: port \(closingPort) released, \(clientCount) connection(s) " + "shut down", category: .hlsServer) - - // shutdown() BEFORE close() on the listen fd: close releases the fd number while the accept loop may have captured it; a new session could recycle that number and the dying loop would accept on the new session's socket. shutdown() wakes the blocked accept without releasing the number. - if fdToClose >= 0 { - shutdown(fdToClose, SHUT_RDWR) - close(fdToClose) - } - // shutdown() (NOT close) client fds: close would release the fd number while the handler still owns it; a channel-zap reuses that number immediately on the process-wide singleton engine, so the handler's late send()/deferred close() would hit the new session's descriptor. - for fd in clients { - shutdown(fd, SHUT_RDWR) - } + // The listen fd is not closed here: the accept loop owns it and closes it on its way out. + // Closing it from this thread freed the number while that loop could still call accept on + // it, and the next socket in the process to get the number lost a connection to it. + // shutdown() does not wake a blocked accept on Darwin, so the loop polls instead. } // MARK: - Accept loop - private func acceptLoop() { + private func acceptLoop(listenFd fd: Int32, generation: UInt64) { + defer { close(fd) } while true { stateLock.lock() - let stopping = shouldStop - let fd = listenFd + let current = !shouldStop && listenGeneration == generation stateLock.unlock() - if stopping || fd < 0 { return } + if !current { return } + + var pfd = pollfd(fd: fd, events: Int16(POLLIN), revents: 0) + let ready = poll(&pfd, 1, Self.acceptPollMilliseconds) + if ready == 0 { continue } + if ready < 0 { + if errno == EINTR { continue } + return + } var clientAddr = sockaddr_in() var clientLen = socklen_t(MemoryLayout.size) @@ -684,7 +756,6 @@ final class HLSLocalServer: @unchecked Sendable { } if clientFd < 0 { let err = errno - // EBADF means listenFd was closed by stop(); exit cleanly. if err == EBADF || err == EINVAL { return } @@ -940,7 +1011,11 @@ final class HLSLocalServer: @unchecked Sendable { _ = send404(fd: fd, path: path, reason: "bad session token", logged: false) return false } - let normalizedPath = (routePath == "/audio.m3u8") ? "/media.m3u8" : routePath + let route = Self.livePlaylistRoute(routePath) + guard route.generation <= (provider?.livePlaylistGeneration ?? 0) else { + return send404(fd: fd, path: routePath, reason: "unknown playlist generation") + } + let normalizedPath = (route.path == "/audio.m3u8") ? "/media.m3u8" : route.path let loggedRequest = Self.requestLineForLog( method: parts[0], routePath: routePath, query: query, version: parts.count > 2 ? parts[2] : nil) @@ -1089,7 +1164,7 @@ final class HLSLocalServer: @unchecked Sendable { // surfaces the failure instead of hanging). _ = p.waitForSequentialStartupSegments(timeout: 30.0) } - let body = buildMediaPlaylist() + let body = buildMediaPlaylist(generation: route.generation) stateLock.lock() let firstTime = !loggedMediaPlaylist if firstTime { loggedMediaPlaylist = true } @@ -1116,7 +1191,7 @@ final class HLSLocalServer: @unchecked Sendable { return send404(fd: fd, path: normalizedPath, reason: "unparseable subtitle playlist path") } EngineLog.emit("[HLSLocalServer] subtitle rendition selected: subs_\(parsed.ordinal).m3u8 fetched", category: .hlsServer) - let subBody = Self.buildSubtitleMediaPlaylistText(ordinal: parsed.ordinal, provider: prov) + let subBody = Self.buildSubtitleMediaPlaylistText(ordinal: parsed.ordinal, provider: prov, generation: route.generation) return send200(fd: fd, path: normalizedPath, data: Data(subBody.utf8), contentType: "application/vnd.apple.mpegurl") @@ -1233,7 +1308,7 @@ final class HLSLocalServer: @unchecked Sendable { // ~3.5 s time-to-first-byte watchdog logs -12889 per silent request and three // strikes fail the item (failedToPlayToEndTime, terminal from the couch). let early = EarlyHeaderState() - let data = provider?.mediaSegment(at: index, onSlow: { [weak self] in + let source = provider?.mediaSegmentSource(at: index, onSlow: { [weak self] in guard let self, early.markSentOnce() else { return } EngineLog.emit( "[HLSLocalServer] seg\(index): slow serve, sending early chunked header", @@ -1242,6 +1317,23 @@ final class HLSLocalServer: @unchecked Sendable { data: Self.chunkedResponseHeader(contentType: "video/mp4"), path: "\(normalizedPath) [early header]") }) + // A segment being written: commit the chunked header (unless the slow-serve + // signal already did) and send each fragment as it lands. An abandoned segment + // ends the connection without the final chunk, so AVPlayer retries it rather + // than taking the partial bytes for a whole segment. + if case .progressive(let reader) = source { + if early.markSentOnce() { + guard writeAll(fd: fd, data: Self.chunkedResponseHeader(contentType: "video/mp4"), + path: "\(normalizedPath) [progressive header]") else { + return refused(false) + } + } + return delivered(sendProgressiveBody(fd: fd, path: normalizedPath, reader: reader)) + } + let data: Data? = { + if case .data(let d) = source { return d } + return nil + }() if early.wasSent { guard let data, !data.isEmpty else { // Headers are committed; abort so AVPlayer sees a truncated transfer @@ -1318,6 +1410,37 @@ final class HLSLocalServer: @unchecked Sendable { static let chunkFrameTrailer = Data("\r\n".utf8) static let chunkedFinal = Data("0\r\n\r\n".utf8) + /// Body for a progressively delivered segment: one chunk per read (usually the fragment the muxer + /// just flushed), the final chunk once the sealed segment is read to its end. Returns false + /// without the final chunk when the producer abandons the segment. + private func sendProgressiveBody(fd: Int32, path: String, reader: ProgressiveSegmentReader) -> Bool { + let provider = self.provider + var sent = 0 + while true { + switch reader.next() { + case .bytes(let data): + guard writeAll(fd: fd, data: Self.chunkFrameHeader(size: data.count), path: "\(path) [chunk size]"), + writeAll(fd: fd, data: data, path: path), + writeAll(fd: fd, data: Self.chunkFrameTrailer, path: "\(path) [chunk trailer]") else { + return false + } + sent += data.count + provider?.didDeliverProgressiveChunk(index: reader.index) + case .finished: + EngineLog.emit( + "[HLSLocalServer] -> 200 \(path) bytes=\(sent) type=video/mp4 [progressive]", + category: .hlsServer, level: .verbose) + return writeAll(fd: fd, data: Self.chunkedFinal, path: "\(path) [chunk final]") + case .abandoned: + EngineLog.emit( + "[HLSLocalServer] \(path): the producer abandoned this segment after \(sent) B sent; " + + "closing so AVPlayer asks for it again", + category: .hlsServer) + return false + } + } + } + /// Body for an early-header serve: the whole segment as one chunk. Four separate send() /// calls so mmap-backed segment Data is never copied into a Swift heap buffer. private func sendChunkedBody(fd: Int32, path: String, data: Data) -> Bool { @@ -1617,10 +1740,11 @@ final class HLSLocalServer: @unchecked Sendable { variant: variant) } - private func buildMediaPlaylist() -> String { + private func buildMediaPlaylist(generation: Int) -> String { guard let provider = provider else { return "#EXTM3U\n" } return Self.buildMediaPlaylistText(provider: provider, - subResourceBaseURL: subResourceBaseURL) + subResourceBaseURL: subResourceBaseURL, + generation: generation) } /// Parse ?_HLS_msn=N from the request query. _HLS_part ignored (segment-level blocking only, no partial segments). Returns nil for absent or unparseable (treated as plain reload). @@ -1701,10 +1825,17 @@ final class HLSLocalServer: @unchecked Sendable { streamInfAttrs.append("CLOSED-CAPTIONS=\(cc)") } if let audio = audioRendition { - let audioAttrs = [ - "TYPE=AUDIO", "GROUP-ID=\"aud\"", "NAME=\"\(audio.name)\"", - "LANGUAGE=\"\(audio.language)\"", "DEFAULT=YES", "AUTOSELECT=YES", - ] + var audioAttrs = ["TYPE=AUDIO", "GROUP-ID=\"aud\"", "NAME=\"\(audio.name)\""] + if let language = audio.language { audioAttrs.append("LANGUAGE=\"\(language)\"") } + audioAttrs.append(contentsOf: ["DEFAULT=YES", "AUTOSELECT=YES"]) + // CHANNELS is where object audio is declared to AVFoundation. The CODECS string stays + // `ec-3` (#34: never `ec+3`), and the per-segment `dec3` box is below the playlist layer, + // so this tag is the only place the master can say the rendition is Atmos. Dolby's DD+ + // Online Delivery Kit and the Apple HLS Authoring Spec both spell it + // `CHANNELS="16/JOC"`; a non-JOC track gets its plain bed count. + if let channels = provider.masterAudioChannels { + audioAttrs.append("CHANNELS=\"\(channels)\"") + } lines.append("#EXT-X-MEDIA:\(audioAttrs.joined(separator: ","))") } @@ -1809,9 +1940,12 @@ final class HLSLocalServer: @unchecked Sendable { /// playlists stay consistent. AVPlayer fetches `subs_{ord}_{i}.vtt` around when it plays `seg{i}.mp4`, by /// which point the ~90s-ahead reader has that window's cues in the store. WebVTT segments carry no init /// segment, so no EXT-X-MAP. - static func buildSubtitleMediaPlaylistText(ordinal: Int, provider: HLSSegmentProvider) -> String { + static func buildSubtitleMediaPlaylistText(ordinal: Int, provider: HLSSegmentProvider, + generation: Int? = nil) -> String { let snapshot = provider.notePlaylistBuild() - let count = snapshot.visibleCount + let requestedGeneration = generation ?? provider.livePlaylistGeneration + let retiredEnd = provider.livePlaylistEndIndex(generation: requestedGeneration) + var count = min(snapshot.visibleCount, retiredEnd ?? snapshot.visibleCount) let firstVisible = min(snapshot.firstVisible, count) // Sodalite#32: whole-program shape, ONE VOD segment spanning the full duration, one .vtt with all cues. @@ -1837,7 +1971,8 @@ final class HLSLocalServer: @unchecked Sendable { // AE#446 round 2: a rendition has to end with the video playlist it belongs to, or AVPlayer // keeps reloading a live subtitle track beside a finished asset. let liveOutage = (provider.playlistType == .live && !snapshot.endlistAdded - && provider.liveOutageEndlist) + && (retiredEnd != nil + || provider.liveOutageEndlist)) let typeIsLive = (provider.playlistType == .live && !snapshot.endlistAdded && !liveOutage) var maxDuration: Double = 0 @@ -1852,10 +1987,16 @@ final class HLSLocalServer: @unchecked Sendable { // A rendition is a Media Playlist like any other, and it is built from this provider's own // segments, so the two values are the same number and may as well come from the same place. let targetDuration = (typeIsLive || liveOutage) - ? provider.liveTargetDurationSeconds(maxSegmentDuration: maxDuration) + ? provider.liveTargetDurationSeconds(maxSegmentDuration: maxDuration, + generation: requestedGeneration) : LiveEdgePolicy.targetDurationSeconds(maxSegmentDuration: maxDuration, cutTargetSeconds: nil, cadenceFloorSeconds: nil) + if typeIsLive || liveOutage { + count = (firstVisible.. String { + subResourceBaseURL: URL? = nil, generation: Int? = nil) -> String { // Atomic snapshot from notePlaylistBuild(); a separate lock acquisition for visibleCount vs firstVisible let a concurrent window slide produce a trapping range. let snapshot = provider.notePlaylistBuild() - let count = snapshot.visibleCount + let requestedGeneration = generation ?? provider.livePlaylistGeneration + let retiredEnd = provider.livePlaylistEndIndex(generation: requestedGeneration) + var count = min(snapshot.visibleCount, retiredEnd ?? snapshot.visibleCount) let firstVisible = min(snapshot.firstVisible, count) let typeIsEvent = (provider.playlistType == .event && !snapshot.endlistAdded) // AE#446 round 2: a live source that has stopped delivering, with a consumer still holding @@ -1910,7 +2053,8 @@ final class HLSLocalServer: @unchecked Sendable { // ENDLIST is the only thing measured to keep AVPlayer fetching a playlist whose tail has // stopped moving (a changed byte does not, and neither does a changed MEDIA-SEQUENCE). let liveOutage = (provider.playlistType == .live && !snapshot.endlistAdded - && provider.liveOutageEndlist) + && (retiredEnd != nil + || provider.liveOutageEndlist)) // Sliding live: no PLAYLIST-TYPE tag and no ENDLIST (EVENT forbids removal; VOD implies finished asset). let typeIsLive = (provider.playlistType == .live && !snapshot.endlistAdded && !liveOutage) @@ -1924,13 +2068,19 @@ final class HLSLocalServer: @unchecked Sendable { maxDuration = max(maxDuration, provider.segmentDuration(at: i)) } let targetDuration = (typeIsLive || liveOutage) - ? provider.liveTargetDurationSeconds(maxSegmentDuration: maxDuration) + ? provider.liveTargetDurationSeconds(maxSegmentDuration: maxDuration, + generation: requestedGeneration) : LiveEdgePolicy.targetDurationSeconds( maxSegmentDuration: maxDuration, cutTargetSeconds: nil, cadenceFloorSeconds: nil ) + if typeIsLive || liveOutage { + count = (firstVisible.. [String: String] { condition.lock() if result == nil { - task = Task.detached { [self] in + task = BlockingWork.detached { [self] in let answer: Result<[String: String], Error> do { answer = .success(try await authorization.resolver(url, rejectedHeaders)) } catch { answer = .failure(error) } diff --git a/Sources/AetherEngine/PlaybackClock.swift b/Sources/AetherEngine/PlaybackClock.swift index dee6e843a..ff2462ba1 100644 --- a/Sources/AetherEngine/PlaybackClock.swift +++ b/Sources/AetherEngine/PlaybackClock.swift @@ -7,10 +7,13 @@ import Combine @MainActor public final class PlaybackClock: ObservableObject { - /// ~10 Hz. On native HLS: unified source-PTS clock (AVPlayer time folded with `playlistShiftSeconds`). + /// ~10 Hz. On native HLS, AVPlayer item time folded onto the display axis. Live loopback + /// retains its initial shift across source timestamp rollbacks. @Published public internal(set) var currentTime: Double = 0 - /// Source PTS of the currently displayed frame. On native: rides AVPlayer's rendered position -- equals `currentTime` in steady play, but holds the on-screen frame during a seek or rebuffer, not the scrub target (issue #49). SW/audio: always equals `currentTime`. + /// Source PTS of the currently displayed frame. On native, rides AVPlayer's rendered position; + /// live loopback may differ from `currentTime` after a source timestamp rollback. During a seek + /// it holds the on-screen frame, not the scrub target (issue #49). SW/audio equals currentTime. /// /// `nativeRemoteHLS` (AE#616): item time, less the lead over the picture the engine measured on its /// own injected subtitle renditions (#316). The lead exists where an origin restarts a transcode at the diff --git a/Sources/AetherEngine/PlaybackErrorInfo.swift b/Sources/AetherEngine/PlaybackErrorInfo.swift index b47b4fab9..d36d34491 100644 --- a/Sources/AetherEngine/PlaybackErrorInfo.swift +++ b/Sources/AetherEngine/PlaybackErrorInfo.swift @@ -83,6 +83,12 @@ public struct PlaybackErrorKind: RawRepresentable, Sendable, Equatable, Hashable /// neither gone nor unreadable, and a second player that decodes the track itself will play it. /// A host with a fallback ladder should DEMOTE on this one, not end the ladder. public static let audioBridgeProducedNoOutput = PlaybackErrorKind(rawValue: "audioBridgeProducedNoOutput") + /// The volume holding the loopback segment cache (the temporary directory) ran out of space, so + /// the session could not write its segments and the muxer revive budget ran out. Distinct from + /// `vodSourceFailed` and `audioBridgeProducedNoOutput`, which this used to arrive as: the source + /// and its audio are fine, and the same load succeeds once space is freed. A host should free + /// its own caches or ask the user to, not demote to another player. + public static let storageExhausted = PlaybackErrorKind(rawValue: "storageExhausted") } /// Machine-readable companion to the text inside `PlaybackState.error` (#376). diff --git a/Sources/AetherEngine/PlayerState.swift b/Sources/AetherEngine/PlayerState.swift index 8052287d3..2ef6911c4 100644 --- a/Sources/AetherEngine/PlayerState.swift +++ b/Sources/AetherEngine/PlayerState.swift @@ -416,6 +416,22 @@ public struct LoadOptions: Sendable, Equatable { /// subtitle downloads. On supported requests this replaces `httpHeaders`; default nil. public var httpRequestAuthorization: HTTPRequestAuthorization? + /// Opt-in decoded-frame diagnostics for SDR native loopback playback. Default off. + /// Samples an additional AVPlayerItemVideoOutput; reports output gaps, not physical display + /// freezes. Disabled during seek/pause, external playback and mobile background activity. + public var nativeVideoFrameDiagnostics: Bool = false + + /// Opt-in bounded repair of stalled SDR decoded output on native loopback playback. + /// Enables frame observation independently of diagnostics. Default off; short gaps, + /// unavailable output, PiP, background, external playback, pause and seeks never repair. + public var nativeVideoFrameRecovery: Bool = false + + /// The host owns the retry after a verified live replay exhausts in-engine recovery: the engine + /// publishes `liveSourceReplayExhausted` and waits for `retryLiveSourceRecovery()`. Default off, + /// where that exhaustion publishes `liveSourceReset` like any other source loss, so a host that + /// only knows that event still retunes instead of holding the last frame. + public var hostRetriesExhaustedLiveReplay: Bool = false + /// Diagnostic lever: force dvh1 codec tags + master playlist regardless of display capability. OFF by default: non-DV displays route DV through the media playlist (no master) so AVPlayer auto-tonemaps the HEVC base layer (only path that avoids AVFoundationErrorDomain -11868 on tvOS 26). AetherEngine#4. public var keepDvh1TagWithoutDV: Bool @@ -431,8 +447,8 @@ public struct LoadOptions: Sendable, Equatable { /// the profile field means, and a tvOS build that reads the base layer's colorimetry from the profile /// rather than the RPU would render IPT out of YCbCr (the green/violet cast of AE#4 and AE#176). /// - /// Ignored when the display does support Dolby Vision, and applies to HEVC Profile 8.1 only. Reported by - /// DrHurt against a Samsung HDR10 panel. + /// Ignored when the display does support Dolby Vision, and applies to HEVC Profile 8.1 and to Profile 7, + /// which is served as the Profile 8.1 it is converted to. Reported by DrHurt against a Samsung HDR10 panel. public var forceDolbyVisionOnNonDVDisplay: Bool /// A `DolbyVisionHandling`. Default `.automatic`. `.baseLayerOnly` presents the HDR10 / HLG base layer @@ -528,9 +544,10 @@ public struct LoadOptions: Sendable, Equatable { /// - `.lossless`: FLAC up to 7.1. Needs a sink that accepts multichannel LPCM (Denon / Marantz / NAD AVRs); stereo-only routes silently downmix. public var audioBridgeMode: AudioBridgeMode - /// TrueHD Atmos delivery. `.off` (default) keeps `audioBridgeMode`'s 7.1 channel decode; - /// `.apac(layout)` renders the Atmos objects into `layout` and delivers Apple Positional Audio, - /// which reaches an Atmos receiver as Dolby MAT with its heights. See `ObjectAudioRendering`. + /// TrueHD Atmos and DTS:X delivery (#731). `.off` (default) keeps `audioBridgeMode`'s 7.1 channel + /// decode; `.apac(layout)` renders the objects and heights into `layout` and delivers Apple + /// Positional Audio, which reaches an Atmos receiver as Dolby MAT with its heights. See + /// `ObjectAudioRendering`. public var objectAudioRendering: ObjectAudioRendering /// Treat the source as a live stream. `seek(to:)` becomes a no-op; `isLive` surface reflects this for host UIs. Set explicitly: auto-detection from `probe.durationSeconds == 0` is too noisy (VOD MKVs with broken duration headers). Default `false`. @@ -542,6 +559,10 @@ public struct LoadOptions: Sendable, Equatable { /// DVR rewind window in seconds; nil = live-only (seek is a no-op). Engine retains roughly this much past content disk-backed, bounded by the session disk budget (a quarter of the free space, at most 2 GiB), so a long window on a high-bitrate channel or a small volume holds less than it asks for. Suggested default: 1800. Ignored when `isLive == false`. Default nil. public var dvrWindowSeconds: Double? + /// Opt in to strict software DVR storage bounds and runtime capacity leases. + /// Nil preserves the default spool behavior. + public var softwareDVRRetention: SoftwareDVRRetentionOptions? = nil + /// LL-HLS blocking-reload (`#EXT-X-SERVER-CONTROL:CAN-BLOCK-RELOAD`) override for live loopback sessions. /// nil (default) = auto: for a `LiveIngestSourceInfo` custom reader the engine derives eligibility from /// the OBSERVED upstream arrival cadence (off until sustained discipline is proven, permanently off once @@ -570,6 +591,27 @@ public struct LoadOptions: Sendable, Equatable { /// (AetherEngine#195/#208). public var liveJoinProfile: LiveJoinProfile = .standard + /// HTTP VOD opening budgets. Applied to the initial playback reader and its reopens; + /// live, sequential-only sources and disposable frame probes retain their own policies. + public var sourceOpenPolicy: SourceOpenPolicy = .init() + + /// Extra wait after an eligible finalized window for `.fastZap` loopback live joins. + /// Nil uses the observed segment duration clamped to 0.5...2 seconds. Zero serves immediately + /// once the minimum media exists. Invalid or negative values use the automatic policy. + /// A shorter grace can increase early rebuffering on irregular sources. This does not change + /// TARGETDURATION, HOLD-BACK, or `.standard` joins. The minimum is two segments unless + /// `liveStartupSingleSegmentMinimumSeconds` explicitly permits a sufficiently long first one. + public var liveStartupGraceSeconds: Double? = nil + + /// Opt-in minimum media duration for starting a `.fastZap` loopback live session with one + /// finalized segment. Nil retains the two-segment minimum. A finite, positive value allows a + /// single segment at least that long to enter the same bounded-start grace; shorter segments + /// still need a second segment. This avoids waiting for another full GOP on long-GOP sources. + /// It does not change segment boundaries, TARGETDURATION, HOLD-BACK or `.standard` joins. + /// A shallow initial playlist can rebuffer if the next segment arrives late. Hosts choose + /// this latency/resilience tradeoff; invalid values preserve the two-segment minimum. + public var liveStartupSingleSegmentMinimumSeconds: Double? = nil + /// Cut AVPlayer's stall-avoidance wait short at the live join, once it is holding on media it has /// already buffered. Live sessions on the AVPlayer-backed paths only. Default `false` (AE#440). /// @@ -738,6 +780,14 @@ public struct LoadOptions: Sendable, Equatable { /// transport: they park deliberately for minutes, which is the one shape a held connection /// must not take. /// + /// AE#732: it also covers a finite HLS VOD that takes the AE#268 ingest (HEVC in MPEG-TS). Its + /// playlist, key and segment requests then run over one persistent HTTP/1.1 connection per + /// origin, reused across segment boundaries, one segment at a time instead of four in parallel, + /// for origins that refuse h2 or a freshly opened connection but serve consecutive requests on + /// one keep-alive connection. The connection is replaced only when the origin closes it, the + /// origin changes, or a seek abandons a body mid-transfer; each open and close is logged with + /// its protocol and request count. Other HLS routes keep their transport. + /// /// Names the session rather than tuning it: the transport is chosen when the source is opened, /// so a reload cannot change it. Default false, which is every reader shipped so far. public var heldSourceConnection: Bool = false @@ -797,6 +847,16 @@ public struct LoadOptions: Sendable, Equatable { /// remote server directly. public var forwardBufferSegments: Int? + /// Serve each VOD loopback segment while it is being written instead of after its cut. The + /// muxer flushes a fragment about every half second and the loopback server sends each one as + /// it lands, so AVPlayer can show and start on the first fragments of a segment rather than + /// waiting for all of it. On a fast or local source a segment is cut long before AVPlayer asks + /// for it and nothing changes; on a slow link it is the difference between waiting for a whole + /// segment (seconds of a long GOP at the link's rate) and waiting for its first fragment. + /// Default false. VOD only: live keeps its own window and blocking-reload contracts. Ignored for + /// `nativeRemoteHLS` and on the software path, which serve no loopback segments. + public var progressiveSegmentDelivery: Bool = false + /// Autostart at load completion. Default `true`: every load path ends in `host.play()` and a /// `.playing` state (current behavior, byte-identical). Set `false` to mount PAUSED: a host that /// holds a pause at mount (synchronized-start lobby that loads several devices and starts them on @@ -905,6 +965,9 @@ public struct LoadOptions: Sendable, Equatable { dvrWindowSeconds: Double? = nil, liveBlockingReload: Bool? = nil, liveJoinProfile: LiveJoinProfile = .standard, + sourceOpenPolicy: SourceOpenPolicy = .init(), + liveStartupGraceSeconds: Double? = nil, + liveStartupSingleSegmentMinimumSeconds: Double? = nil, liveJoinStartsImmediately: Bool = true, clampsLiveResumeToWindow: Bool = true, nativeRemoteHLS: Bool = false, @@ -925,6 +988,7 @@ public struct LoadOptions: Sendable, Equatable { preferredSubtitleLanguages: [String] = [], externalSubtitles: [ExternalSubtitleTrack] = [], forwardBufferSegments: Int? = nil, + progressiveSegmentDelivery: Bool = false, autoplay: Bool = true, teletextPage: Int? = nil, audioDelaySeconds: Double = 0, @@ -932,7 +996,10 @@ public struct LoadOptions: Sendable, Equatable { deinterlaceFieldRate: DeinterlaceFieldRate = .field, preferredDecodePath: DecodePath = .automatic, escalatesToSoftwarePath: Bool = true, - sharedOutputRole: SharedOutputRole = .primary + sharedOutputRole: SharedOutputRole = .primary, + nativeVideoFrameDiagnostics: Bool = false, + nativeVideoFrameRecovery: Bool = false, + hostRetriesExhaustedLiveReplay: Bool = false ) { self.omitCriteriaColorExtensions = omitCriteriaColorExtensions self.suppressDisplayCriteria = suppressDisplayCriteria @@ -952,6 +1019,9 @@ public struct LoadOptions: Sendable, Equatable { self.dvrWindowSeconds = dvrWindowSeconds self.liveBlockingReload = liveBlockingReload self.liveJoinProfile = liveJoinProfile + self.sourceOpenPolicy = sourceOpenPolicy + self.liveStartupGraceSeconds = liveStartupGraceSeconds + self.liveStartupSingleSegmentMinimumSeconds = liveStartupSingleSegmentMinimumSeconds self.liveJoinStartsImmediately = liveJoinStartsImmediately self.clampsLiveResumeToWindow = clampsLiveResumeToWindow self.nativeRemoteHLS = nativeRemoteHLS @@ -972,6 +1042,7 @@ public struct LoadOptions: Sendable, Equatable { self.preferredSubtitleLanguages = preferredSubtitleLanguages self.externalSubtitles = externalSubtitles self.forwardBufferSegments = forwardBufferSegments + self.progressiveSegmentDelivery = progressiveSegmentDelivery self.autoplay = autoplay self.teletextPage = teletextPage self.audioDelaySeconds = audioDelaySeconds @@ -980,6 +1051,9 @@ public struct LoadOptions: Sendable, Equatable { self.preferredDecodePath = preferredDecodePath self.escalatesToSoftwarePath = escalatesToSoftwarePath self.sharedOutputRole = sharedOutputRole + self.nativeVideoFrameRecovery = nativeVideoFrameRecovery + self.nativeVideoFrameDiagnostics = nativeVideoFrameDiagnostics + self.hostRetriesExhaustedLiveReplay = hostRetriesExhaustedLiveReplay } } @@ -994,8 +1068,9 @@ public enum VideoFormat: Sendable, Equatable { /// A Dolby Vision profile rewrite the engine applies to the served stream (`AetherEngine.dolbyVisionConversion`). public enum DolbyVisionConversion: Sendable, Equatable { - /// Dual-layer Profile 7 rewritten per packet to single-layer Profile 8.1 for a display presenting Dolby - /// Vision. The enhancement layer is discarded: a MEL carries next to nothing, a FEL loses its refinement. + /// Dual-layer Profile 7 rewritten per packet to single-layer Profile 8.1, on every display (a display + /// without Dolby Vision gets the RPU-driven tone map a Profile 8.1 gets). The enhancement layer is + /// discarded: a MEL carries next to nothing, a FEL loses its refinement. case profile7ToProfile81 } diff --git a/Sources/AetherEngine/Renderer/SampleBufferRenderer.swift b/Sources/AetherEngine/Renderer/SampleBufferRenderer.swift index 79d7e0267..22ec80131 100644 --- a/Sources/AetherEngine/Renderer/SampleBufferRenderer.swift +++ b/Sources/AetherEngine/Renderer/SampleBufferRenderer.swift @@ -74,6 +74,17 @@ final class SampleBufferRenderer: @unchecked Sendable { reorderLock.unlock() } + /// AE#395: the session's renderer axis, shared with the `AudioOutput` whose synchronizer this + /// renderer runs on. Only the stamp on the sample buffer moves onto it; the reorder buffer, the + /// frontier and the frame-time reports stay on the source axis. Guarded by `reorderLock`. + private var _timeline: RendererTimeline? + + func setTimeline(_ timeline: RendererTimeline?) { + reorderLock.lock() + _timeline = timeline + reorderLock.unlock() + } + /// #311: moved on by every flush, so a consumer can drop the frame times it recorded for frames the /// compositor has since discarded. Guarded by `reorderLock`. /// @@ -400,12 +411,22 @@ final class SampleBufferRenderer: @unchecked Sendable { reorderLock.unlock() } + /// AE#711 follow-up: the newest frame handed to the layer, before the subtitle compositor, for a + /// rebuild to hold when the layer cannot say what it is showing (off screen, or before tvOS 17.4's + /// readback has anything). At most one buffer, released by `flush`. + private var _lastEnqueuedFrame: CVPixelBuffer? + var lastEnqueuedFrame: CVPixelBuffer? { + reorderLock.lock(); defer { reorderLock.unlock() } + return _lastEnqueuedFrame + } + /// Discard all buffered frames. `removingDisplayedImage: true` (stop/teardown) also clears the visible /// frame; `false` (seek) holds the last frame on screen until the post-seek frame is enqueued, so a seek /// doesn't flash black between the old and new positions (matches the hardware path's hold-last-frame). func flush(removingDisplayedImage: Bool = true) { reorderLock.lock() reorderBuffer.removeAll() + _lastEnqueuedFrame = nil // #407: the next frame handed over will not follow the last one, so the gap between them is // not a cadence measurement. Left standing, every seek would report one enormous interval. _lastHandedPtsSeconds = nil @@ -446,8 +467,11 @@ final class SampleBufferRenderer: @unchecked Sendable { private func flushFrame(pixelBuffer: CVPixelBuffer, pts: CMTime, hdr10PlusData: Data?, nextPTS: CMTime? = nil) { let outputBuffer = subtitleCompositor.composite(pixelBuffer, ptsSeconds: pts.seconds) + reorderLock.lock() + let timeline = _timeline + reorderLock.unlock() guard let sampleBuffer = createSampleBuffer( - from: outputBuffer, pts: pts, + from: outputBuffer, pts: timeline?.rendererTime(forSource: pts) ?? pts, duration: Self.frameDuration(from: pts, to: nextPTS)) else { // #407: a frame the decoder produced and the layer never saw. Counted, because the // per-second frame count is taken on the decoder's side of this line. @@ -483,6 +507,9 @@ final class SampleBufferRenderer: @unchecked Sendable { EngineLog.emit("[Renderer] isReadyForMoreMediaData=false at enqueue #\(enqueueCount + 1) status=\(statusName)", category: .swPlayback) } target.enqueue(sampleBuffer) + reorderLock.lock() + _lastEnqueuedFrame = pixelBuffer + reorderLock.unlock() // #311: reported here rather than at admission, so it describes frames the compositor has // been given. A frame refused for an unschedulable timestamp, skipped after a seek, or lost diff --git a/Sources/AetherEngine/Resources/silent-atmos.mp4 b/Sources/AetherEngine/Resources/silent-atmos.mp4 new file mode 100644 index 000000000..0989e574e Binary files /dev/null and b/Sources/AetherEngine/Resources/silent-atmos.mp4 differ diff --git a/Sources/AetherEngine/SeekEvent.swift b/Sources/AetherEngine/SeekEvent.swift index 3441b308a..15179bf8e 100644 --- a/Sources/AetherEngine/SeekEvent.swift +++ b/Sources/AetherEngine/SeekEvent.swift @@ -41,6 +41,8 @@ public struct SeekEvent: Sendable, Equatable { case noActiveSession /// Live source without a DVR window; there is no seekable range to land in. case liveWithoutDVR + /// The source can only be read forwards; a duration does not make it seekable. + case sourceNotSeekable } public enum Outcome: Sendable, Equatable { diff --git a/Sources/AetherEngine/SharedOutputCoordinator.swift b/Sources/AetherEngine/SharedOutputCoordinator.swift index 9c2c624c3..f8ca0a8b9 100644 --- a/Sources/AetherEngine/SharedOutputCoordinator.swift +++ b/Sources/AetherEngine/SharedOutputCoordinator.swift @@ -99,7 +99,7 @@ final class SharedOutputCoordinator { /// engines the release of one and the activation of the other had no order between them. func enqueueTransition(_ body: @escaping @Sendable () async -> Void) -> Task { let previous = lastTransition - let transition = Task.detached(priority: .userInitiated) { + let transition = BlockingWork.detached(priority: .userInitiated) { await previous?.value await body() } diff --git a/Sources/AetherEngine/SourceOpenPolicy.swift b/Sources/AetherEngine/SourceOpenPolicy.swift new file mode 100644 index 000000000..21829c56b --- /dev/null +++ b/Sources/AetherEngine/SourceOpenPolicy.swift @@ -0,0 +1,22 @@ +import Foundation + +/// HTTP VOD startup policy. These budgets bound the initial data wait and the entire fallback +/// recovery respectively, not decoding, seeking, or the lifetime of playback. An unanswered +/// data request retries once within `sizeProbeTimeout`, retaining the recovered body. If neither +/// request answers, opening fails instead of classifying the source as forward-only. Size-only +/// discovery remains available for responses that actually arrive without a usable length. +public struct SourceOpenPolicy: Sendable, Equatable { + public let firstByteTimeout: TimeInterval + public let sizeProbeTimeout: TimeInterval + + /// Shorter budgets reach an alternate request shape sooner, but can abandon a slow healthy + /// request. Nonfinite/nonpositive values use the defaults; values above 120 seconds are capped. + public init(firstByteTimeout: TimeInterval = 15, sizeProbeTimeout: TimeInterval = 25) { + self.firstByteTimeout = Self.normalized(firstByteTimeout, fallback: 15) + self.sizeProbeTimeout = Self.normalized(sizeProbeTimeout, fallback: 25) + } + + private static func normalized(_ value: TimeInterval, fallback: TimeInterval) -> TimeInterval { + value.isFinite && value > 0 ? min(120, value) : fallback + } +} diff --git a/Sources/AetherEngine/Video/CodecRoutePolicy.swift b/Sources/AetherEngine/Video/CodecRoutePolicy.swift index 70a04f3df..e7b890bf0 100644 --- a/Sources/AetherEngine/Video/CodecRoutePolicy.swift +++ b/Sources/AetherEngine/Video/CodecRoutePolicy.swift @@ -13,7 +13,7 @@ extension HLSVideoEngine { case profile5 // HEVC P5 (IPT-PQ-c2, no base) → dvh1 + PQ case profile81 // HEVC P8.1 with HDR10-compat base → dvh1 + PQ (on DV display) case profile84 // HEVC P8.4 with HLG-compat base → hvc1 + HLG + SUPPLEMENTAL dvh1/db4h - case profile7 // HEVC P7 dual-layer (BL = HDR10) → hvc1 + PQ (BL only) + case profile7 // HEVC P7 dual-layer (BL = HDR10) → RPU converted to 8.1, EL dropped, routed as P8.1 case profile82 // HEVC P8.2 with SDR-compat base → play Rec.709 base as plain hvc1 case av1Profile10 // AV1 P10.0 (no base) → dav1 + PQ case av1Profile101 // AV1 P10.1 with HDR10-compat base → av01 + PQ + SUPPLEMENTAL dav1 @@ -97,7 +97,7 @@ extension HLSVideoEngine { /// What the muxer does with the source dvcC on the way into init.mp4. /// See `MP4SegmentMuxer.DoviConfigPolicy`. let doviConfig: MP4SegmentMuxer.DoviConfigPolicy - /// Per-packet RPU rewrite P7 -> P8.1 via DoviRpuConverter; true only for P7 on a DV panel. + /// Per-packet RPU rewrite P7 -> P8.1 via DoviRpuConverter; true for every P7 not served as its base layer. let convertP7ToProfile81: Bool let dvVariant: DVVariant @@ -651,25 +651,44 @@ extension HLSVideoEngine { dvVariant: dvVariant ) case .profile7: - // P7 dual-layer (UHD-BD). DV panel: convert RPU P7->P8.1 per-packet (DoviRpuConverter), - // drop EL, rewrite container dvcC to P8.1, route as hvc1 + SUPPLEMENTAL dvh1.08.XX/db1p. - // Non-DV panel: no Apple P7 decoder; strip dvcC, play PQ HEVC HDR10 base. - let supplemental: String? - let doviConfig: MP4SegmentMuxer.DoviConfigPolicy - if effectiveDvMode { - supplemental = "dvh1.08.\(dvLevelStr)/db1p" - doviConfig = .rewriteToProfile81 - } else { - supplemental = nil - doviConfig = .strip + // P7 dual-layer (UHD-BD): convert the RPU P7 -> P8.1 per packet (DoviRpuConverter, libdovi + // mode 2), drop the EL, rewrite the container dvcC to P8.1, and from there on serve exactly + // what a P8.1 source is served, on every display. The way mpv treats Profile 7 without an EL + // decoder: base layer plus RPU, never the bare base layer. + // + // The non-DV branch used to strip the record and skip the conversion, playing the HDR10 base + // with its static metadata only. That was the P8.1 non-DV route of the same era (tvOS 26.0 + // -11868), and P8.1 dropped the strip once it stopped reproducing on 26.6 (see that branch): + // the kept dvvC is what makes AVPlayer tone-map from the RPU on a panel without DV, the + // SUPPLEMENTAL is inert there. A converted P7 is a P8.1 bitstream, so the reasoning carries + // over unchanged; leaving P7 behind cost every P7 source its RPU on HDR10 / SDR panels, on + // every Mac (no per-mode table, so `effectiveDvMode` is false unless the host asserts DV), + // and shipped the EL NAL units (up to a FEL's bitrate) into segments that nothing decodes. + // AE#455 applies to the converted stream the way it applies to a native P8.1. + if !effectiveDvMode && forceDolbyVisionOnNonDVDisplay { + EngineLog.emit( + "[HLSVideoEngine] AE#455: serving HEVC DV Profile 7 (converted to 8.1) as Profile 5 " + + "(dvh1 sample entry, dvcC profile=5 compat=0, CODECS=dvh1.05.\(dvLevelStr)) " + + "so AVPlayer composes the RPU on a display without Dolby Vision", + category: .session + ) + return CodecRoute( + codecTagOverride: "dvh1", + videoRange: .pq, + primaryCodecs: "dvh1.05.\(dvLevelStr)", + supplementalCodecs: nil, + doviConfig: .rewriteToProfile5, + convertP7ToProfile81: true, + dvVariant: dvVariant + ) } return CodecRoute( codecTagOverride: "hvc1", videoRange: .pq, primaryCodecs: plainHEVCCodecs(codecpar: codecpar, fallbackLevel: hevcLevel), - supplementalCodecs: supplemental, - doviConfig: doviConfig, - convertP7ToProfile81: effectiveDvMode, + supplementalCodecs: "dvh1.08.\(dvLevelStr)/db1p", + doviConfig: .rewriteToProfile81, + convertP7ToProfile81: true, dvVariant: dvVariant ) case .unknown: diff --git a/Sources/AetherEngine/Video/HLSSegmentProducer.swift b/Sources/AetherEngine/Video/HLSSegmentProducer.swift index 47b790ac8..8400f243b 100644 --- a/Sources/AetherEngine/Video/HLSSegmentProducer.swift +++ b/Sources/AetherEngine/Video/HLSSegmentProducer.swift @@ -430,6 +430,36 @@ final class HLSSegmentProducer: @unchecked Sendable { private var lastVideoSourceDts: Int64 = Int64.min private var lastAudioSourceDts: Int64 = Int64.min + /// Pump-thread-only packet history for exact overlap after a live source reconnect. + private var liveReplayGuard = LivePacketReplayGuard() + private var interruptedReplayHistory: LivePacketReplayGuard? + + /// Called only after the predecessor pump finished and before this pump starts. + /// Cache continuation owns the admitted frontier, including media not rendered yet; + /// that media remains in the retained cache, so it must not be appended a second time. + func continueLiveReplayHistory(from predecessor: HLSSegmentProducer) { + guard isLive, predecessor.isLive, + sourceVideoTimeBase.num == predecessor.sourceVideoTimeBase.num, + sourceVideoTimeBase.den == predecessor.sourceVideoTimeBase.den, + videoStreamIndex == predecessor.videoStreamIndex, + audioConfig?.sourceStreamIndex == predecessor.audioConfig?.sourceStreamIndex, + audioConfig?.sourceTimeBase.num == predecessor.audioConfig?.sourceTimeBase.num, + audioConfig?.sourceTimeBase.den == predecessor.audioConfig?.sourceTimeBase.den else { return } + liveReplayGuard = (predecessor.interruptedReplayHistory ?? predecessor.liveReplayGuard).sourceContinuation() + lastVideoSourceDts = predecessor.lastVideoSourceDts + lastAudioSourceDts = predecessor.lastAudioSourceDts + EngineLog.emit("[HLSSegmentProducer] live source replay history continued: entries=\(liveReplayGuard.historyEntryCount)", + category: .session) + } + private var replayPending: [ReplayBufferedPacket] = [] + private var replayReady: [ReplayBufferedPacket] = [] + private var replayReadyIndex = 0 + private var replayPendingBytes = 0 + private var replayDeferredError: Error? + private var damagedPacketLogCounts: [String: Int] = [:] + private static let maximumReplayPendingBytes = LivePacketReplayGuard.maximumPendingBytes + private static let maximumReplayPendingPackets = LivePacketReplayGuard.maximumPendingPackets + /// AE#432: last GENUINE source dts per stream and the frame stride learned from it. A repaired /// timestamp says nothing about the source's cadence, so it is deliberately not fed back here. private var lastGenuineVideoSourceDts: Int64 = Int64.min @@ -806,6 +836,15 @@ final class HLSSegmentProducer: @unchecked Sendable { /// AE#464: the host's audio offset this producer's muxers write. Fixed for the producer's life; /// a new value arrives as a new producer (see `MP4SegmentMuxer.audioDelaySeconds`). private let audioDelaySeconds: Double + /// `LoadOptions.progressiveSegmentDelivery`: register each VOD segment with the cache as it is + /// opened, and flush fragments every `progressiveFragmentSeconds` so the loopback server has + /// something to send while the segment is still being cut. + private let servesSegmentsProgressively: Bool + /// The fragment cadence inside a progressively delivered segment. Measured with `aetherctl play` + /// on a Mac over a 6 Mbit/s origin (1080p HEVC at 2.7 Mbit/s, 3-9 s GOPs): playing after 1.9 s at + /// 1 s fragments and 1.7 s at 0.5 s, against 2.3 s without progressive delivery. Each fragment + /// costs a moof of a few hundred bytes. + static let progressiveFragmentSeconds: Double = 0.5 /// #65 stall diag: only log a park once it exceeds ~2 segment durations of zero playback progress, so normal /// backpressure (releases within one segment) stays silent and a real wedge surfaces its frozen tuple. @@ -1176,6 +1215,7 @@ final class HLSSegmentProducer: @unchecked Sendable { firstSeenAudioSourceDts = Int64.min lastVideoSourceDts = Int64.min lastAudioSourceDts = Int64.min + liveReplayGuard.reset() freeMergeLookaheads() packetCounterLock.lock() _lastPregateDroppedKeyframePts = Int64.min @@ -1250,7 +1290,7 @@ final class HLSSegmentProducer: @unchecked Sendable { case needsAudioSampleEntryPrime /// No AV_PKT_FLAG_KEY video packet within timeout; live only (VOD waits unbounded). case keyframeStarvation - /// Backward PTS reset to session origin after unplanned reconnect: server replay-from-start, exits terminally. + /// Source replay cannot safely continue in place; the host must negotiate a fresh session. case sourceReplay /// Pump read packets but finalized no segment for stall window (hostile SSAI ad pod wedge). case segmentStall @@ -1474,9 +1514,11 @@ final class HLSSegmentProducer: @unchecked Sendable { audioMoovPrimeFrame: [UInt8]? = nil, audioMoovPrimeKnownUnobtainable: Bool = false, audioDelaySeconds: Double = 0, + servesSegmentsProgressively: Bool = false, epoch: UInt64 = 0 ) throws { self.epoch = epoch + self.servesSegmentsProgressively = servesSegmentsProgressively self.audioDelaySeconds = audioDelaySeconds self.audioMoovPrimeFrame = audioMoovPrimeFrame self.audioMoovPrimeKnownUnobtainable = audioMoovPrimeKnownUnobtainable @@ -1928,7 +1970,9 @@ final class HLSSegmentProducer: @unchecked Sendable { } private func awaitLiveWindowHeadroom(head: Int) -> Bool { - if cache.count < liveResidentCap() { return true } + // Compute a possibly-expired cap before reconciling its retained history. This is the + // same expiry handler as the cache timer, so delayed timer delivery cannot wedge this park. + if cache.reconcileExpiredNativeLiveDVRRetention(headroomCap: liveResidentCap()) { return true } // #240: a parked pump is not using the link. sideReaderLinkGate?.videoFetchEnded() defer { sideReaderLinkGate?.videoFetchBegan() } @@ -1946,7 +1990,7 @@ final class HLSSegmentProducer: @unchecked Sendable { // from the observed cadence and segment size, so it moves while a park holds, and a park // that outlived its own reason would keep the origin undrained for nothing. let cap = liveResidentCap() - if cache.count < cap { + if cache.reconcileExpiredNativeLiveDVRRetention(headroomCap: cap) { EngineLog.emit( "[HLSSegmentProducer] live headroom released head=\(head) after=\(parked)s " + "resident=\(cache.count)", @@ -2139,11 +2183,13 @@ final class HLSSegmentProducer: @unchecked Sendable { // audio stream that decodes to nothing can't buffer the whole span and fill the disk (#64). // Floored at 8s (the historical 2 x 4s value): a sub-second fastZap cut target (AE#195) // must not shrink the cap below typical TS A/V interleave skew. - maxBufferedFragmentSeconds: max(8.0, 2 * targetSegmentDurationSeconds), + maxBufferedFragmentSeconds: servesProgressively + ? Self.progressiveFragmentSeconds : max(8.0, 2 * targetSegmentDurationSeconds), // AE#222 + mid-session rotation: the last frame a muxer accepted, or the host's // construction-time prime while no muxer has accepted one yet. audioMoovPrimeFrame: audioMoovPrimeFrame, audioDelaySeconds: audioDelaySeconds, + onStorageExhausted: { [cache] in cache.noteStorageExhausted() }, onInitCaptured: { [weak self] initBytes in guard let self = self else { return } if versionedInit { @@ -2167,6 +2213,7 @@ final class HLSSegmentProducer: @unchecked Sendable { // outgoing muxer's totals have to be folded before the reference goes. self.installMuxer(muxer) self.currentMuxerSegmentIndex = initialSegmentIndex + self.noteSegmentInProgress(initialSegmentIndex, muxer: muxer) return muxer } catch { EngineLog.emit( @@ -2368,7 +2415,6 @@ final class HLSSegmentProducer: @unchecked Sendable { // the NEW producer's position. Cutting on it would adopt this pump's partial segment under // its full index; the teardown rule decides what happens to the in-flight segment instead. if checkShouldStop() { return nil } - switch muxer.cutFragmentForNextSegment(newIdx) { case .completed(let path, let bytesWritten): EngineLog.emit( @@ -2431,6 +2477,7 @@ final class HLSSegmentProducer: @unchecked Sendable { return nil case .failed: // Failed cut: muxer has no open staging fd, every byte is silently discarded. Fatal. + abandonSegmentInProgress(currentMuxerSegmentIndex) EngineLog.emit( "[HLSSegmentProducer] seg-\(currentMuxerSegmentIndex).m4s cut FAILED; " + "muxer is wedged, ending pump", @@ -2459,6 +2506,7 @@ final class HLSSegmentProducer: @unchecked Sendable { ) } currentMuxerSegmentIndex = newIdx + noteSegmentInProgress(newIdx, muxer: muxer) if isLive { // Live is source-paced: the pump only runs ahead of real time while draining the join // backlog, and the sliding window (notePlaylistBuild -> evictBelow) bounds resident @@ -2601,6 +2649,19 @@ final class HLSSegmentProducer: @unchecked Sendable { return .syncAt(offsetSeconds: offset) } + /// Progressive delivery is VOD only: live keeps its own window and blocking-reload contracts. + private var servesProgressively: Bool { !isLive && servesSegmentsProgressively } + + private func noteSegmentInProgress(_ index: Int, muxer: MP4SegmentMuxer) { + guard servesProgressively else { return } + cache.beginInProgress(index: index, stagingPath: muxer.stagingURL) + } + + private func abandonSegmentInProgress(_ index: Int) { + guard servesProgressively, index != .min else { return } + cache.abandonInProgress(index: index) + } + private func finalizeSessionMuxerAndAdopt() { guard let muxer = currentMuxer else { return } let idx = currentMuxerSegmentIndex @@ -2618,6 +2679,7 @@ final class HLSSegmentProducer: @unchecked Sendable { reportSequentialSegmentFinalized(index: idx, isFinal: true) } } else { + abandonSegmentInProgress(idx) EngineLog.emit( "[HLSSegmentProducer] seg-\(idx).m4s final finalize failed; not adopted", category: .session @@ -2632,6 +2694,8 @@ final class HLSSegmentProducer: @unchecked Sendable { private func discardSessionMuxer() { guard let muxer = currentMuxer else { return } let idx = currentMuxerSegmentIndex + // The partial segment is not adopted; a reader draining it is told before the file goes. + abandonSegmentInProgress(idx) if let result = muxer.finalize() { try? FileManager.default.removeItem(at: result.path) EngineLog.emit( @@ -2739,11 +2803,28 @@ final class HLSSegmentProducer: @unchecked Sendable { /// Pump-thread-only: has the first source read of this producer been timed yet (#93 latency)? private var pumpFirstReadLogged = false + private struct LiveReplaySample { + let signature: LivePacketReplayGuard.Signature + let seconds: Double + let timeBaseSeconds: Double + } + + private struct ReplayBufferedPacket { + let packet: UnsafeMutablePointer + let origin: PacketOrigin + let sample: LiveReplaySample? + let isDuplicate: Bool + var untimedBoundaryVideo = false + } + + private struct InterruptedSourceReplay: Error {} + /// Returns next packet in global decode order. Single-demuxer fast path; dual-demuxer yields lower-DTS first. /// #93 restart latency: the FIRST read of a producer is timed (one line; info when it exceeded /// 1 s), because rrgomes' trace shows exactly that read waiting 19-46 s client-side while a /// fresh side reader overtakes it in 300 ms. - private func readNextSourcePacket() throws -> (packet: UnsafeMutablePointer, origin: PacketOrigin)? { + private func readNextSourcePacket() throws -> (packet: UnsafeMutablePointer, origin: PacketOrigin, + replaySample: LiveReplaySample?)? { guard !pumpFirstReadLogged else { return try readNextSourcePacketMergedTapped() } pumpFirstReadLogged = true let t0 = DispatchTime.now() @@ -2765,13 +2846,294 @@ final class HLSSegmentProducer: @unchecked Sendable { /// /// It is also upstream of `bridge.feed`, so the recording carries the source's own audio codec /// while playback listens to the bridged rendition. - private func readNextSourcePacketMergedTapped() throws -> (packet: UnsafeMutablePointer, origin: PacketOrigin)? { - let read = try readNextSourcePacketMerged() - if let read { + private func readNextSourcePacketMergedTapped() throws -> (packet: UnsafeMutablePointer, origin: PacketOrigin, + replaySample: LiveReplaySample?)? { + while true { + if !replayPending.isEmpty || !replayReady.isEmpty { + stateLock.lock() + let stopped = shouldStop + stateLock.unlock() + if stopped { + freeReplayPackets() + return nil + } + } + if replayReadyIndex < replayReady.count { + let ready = replayReady[replayReadyIndex] + replayReadyIndex += 1 + if replayReadyIndex == replayReady.count { + replayReady.removeAll(keepingCapacity: true) + replayReadyIndex = 0 + } + logDamagedLivePacket(ready.packet, origin: ready.origin, action: "forwarded") + logVideoPacketProgress(ready.sample) + tapForRecording(ready.packet) + recordPlayedMedia(ready.packet, origin: ready.origin) + return (ready.packet, ready.origin, ready.sample) + } + if let replayDeferredError { + self.replayDeferredError = nil + throw replayDeferredError + } + let read: (packet: UnsafeMutablePointer, origin: PacketOrigin)? + do { + read = try readNextSourcePacketMerged() + } catch { + if !replayPending.isEmpty { + replayDeferredError = error + try rollbackReplayCandidate(reason: "source read failed before overlap was confirmed") + continue + } + throw error + } + guard let read else { + if !replayPending.isEmpty { + try rollbackReplayCandidate(reason: "source ended before overlap was confirmed") + continue + } + return nil + } + let sample = liveReplaySample(packet: read.packet, origin: read.origin) + if let sample { + let wasCheckingReplay = liveReplayGuard.isDroppingReplay + let decision = liveReplayGuard.inspect( + sample.signature, sourceSeconds: sample.seconds, + timeBaseSeconds: sample.timeBaseSeconds, + videoFrontier: lastVideoSourceDts, audioFrontier: lastAudioSourceDts, + hasAudio: audioConfig != nil, + isCorrupt: damagedLivePacketStream(read.packet, origin: read.origin) != nil) + if decision.drop, !liveReplayGuard.isDroppingReplay, decision.event == nil { + var duplicate: UnsafeMutablePointer? = read.packet + trackedPacketFree(&duplicate) + continue + } + if case .some(.began) = decision.event { + // A complete overlap continues in place. An interrupted, confirmed prefix + // must not be remuxed as new media; ambiguous candidates still lose nothing. + noCutWatchdog?.setReplayChecking(true, at: Date()) + EngineLog.emit( + "[HLSSegmentProducer] live source overlap candidate: exact packet match " + + "after timestamp rollback; checking both tracks before output", + category: .session) + } + if liveReplayGuard.isDroppingReplay || decision.holdDamagedBoundary || decision.event != nil { + // A held outgoing boundary can precede a damaged first returning PES. + // Arm at the replay transition even when pending is already nonempty. + if !wasCheckingReplay, liveReplayGuard.isDroppingReplay { + noCutWatchdog?.setReplayChecking(true, at: Date()) + } + logDamagedLivePacket(read.packet, origin: read.origin, action: "held") + noCutWatchdog?.noteReplayPacketRead(at: Date()) + replayPending.append(ReplayBufferedPacket(packet: read.packet, origin: read.origin, + sample: sample, isDuplicate: decision.drop)) + replayPendingBytes += max(0, Int(read.packet.pointee.size)) + switch decision.event { + case .some(.damagedBoundaryHeld): + EngineLog.emit("[HLSSegmentProducer] live damaged boundary held: sourceSeconds=\(String(format: "%.3f", sample.seconds)); waiting for replay evidence before publishing video", category: .session) + case .some(.damagedBoundaryForwarded): + forwardUnverifiedDamagedBoundary() + case .some(.quarantined): + EngineLog.emit("[HLSSegmentProducer] live overlap quarantined a changed packet; checking the bounded interval before output", category: .session) + case .some(.finished(let videoPackets, let audioPackets, let videoSeconds)): + commitReplayCandidate() + EngineLog.emit( + "[HLSSegmentProducer] live source overlap resolved: " + + "removed \(videoPackets) video + \(audioPackets) audio packets " + + "across \(String(format: "%.2f", videoSeconds))s; " + + "first new packet continues the existing timeline", + category: .session) + case .some(.mismatch(let videoPackets, let audioPackets)), + .some(.interrupted(let videoPackets, let audioPackets)): + try rollbackReplayCandidate(reason: "track diverged after \(videoPackets) video " + + "+ \(audioPackets) audio matches", divergentStream: sample.signature.stream) + default: + if replayPendingBytes > Self.maximumReplayPendingBytes + || replayPending.count > Self.maximumReplayPendingPackets { + try rollbackReplayCandidate(reason: "bounded overlap check reached its limit") + } + } + continue + } + } + // A truncated outgoing PES can also release an unflagged, untimed fragment. + // Do not synthesize a clock for it before the pending boundary is resolved. + let untimedBoundaryVideo = liveReplayGuard.isHoldingDamagedBoundary && sample == nil + && read.origin == .main && read.packet.pointee.stream_index == videoStreamIndex + if !replayPending.isEmpty, !liveReplayGuard.isHoldingDamagedBoundary || untimedBoundaryVideo { + noCutWatchdog?.noteReplayPacketRead(at: Date()) + if damagedLivePacketStream(read.packet, origin: read.origin) != nil { + liveReplayGuard.noteDamagedPacket() + } + logDamagedLivePacket(read.packet, origin: read.origin, action: "held") + // Untimed fragments of this damaged boundary are provisional too; + // only verified replay permits discarding them without a signature. + replayPending.append(ReplayBufferedPacket(packet: read.packet, origin: read.origin, + sample: sample, isDuplicate: false, untimedBoundaryVideo: untimedBoundaryVideo)) + replayPendingBytes += max(0, Int(read.packet.pointee.size)) + if replayPendingBytes > Self.maximumReplayPendingBytes + || replayPending.count > Self.maximumReplayPendingPackets { + try rollbackReplayCandidate(reason: "bounded overlap check reached its limit") + } + continue + } + // The recording sees the same unique source packets as playback. + logDamagedLivePacket(read.packet, origin: read.origin, action: "forwarded") + logVideoPacketProgress(sample) tapForRecording(read.packet) recordPlayedMedia(read.packet, origin: read.origin) + return (read.packet, read.origin, sample) + } + } + + private func damagedLivePacketStream(_ packet: UnsafePointer, origin: PacketOrigin) -> String? { + guard isLive, (packet.pointee.flags & AV_PKT_FLAG_CORRUPT) != 0 else { return nil } + if origin == .main, packet.pointee.stream_index == videoStreamIndex { return "video" } + if packet.pointee.stream_index == audioConfig?.sourceStreamIndex, + (origin == .side) == (sideAudioDemuxer != nil) { return "audio" } + return nil + } + + private func logDamagedLivePacket(_ packet: UnsafePointer, origin: PacketOrigin, action: String) { + guard let stream = damagedLivePacketStream(packet, origin: origin) else { return } + let key = stream + action + damagedPacketLogCounts[key, default: 0] += 1 + let count = damagedPacketLogCounts[key]! + guard count <= 3 || count.isMultiple(of: 64) else { return } + let dts = packet.pointee.dts == Int64.min ? "missing" : String(packet.pointee.dts) + let pts = packet.pointee.pts == Int64.min ? "missing" : String(packet.pointee.pts) + let keyframe = (packet.pointee.flags & AV_PKT_FLAG_KEY) != 0 + EngineLog.emit("[HLSSegmentProducer] live damaged packet: stream=\(stream) action=\(action) " + + "count=\(count) dts=\(dts) pts=\(pts) keyframe=\(keyframe)", category: .session) + } + + private var admittedVideoProgress = VideoPacketProgress() + + private func logVideoPacketProgress(_ sample: LiveReplaySample?) { + guard let sample, sample.signature.stream == .video, + let gap = admittedVideoProgress.observe(sample.seconds) else { return } + EngineLog.emit("[VideoPacketProgress] event=gap route=native previous=\(String(format: "%.3f", gap.previous)) dts=\(String(format: "%.3f", sample.seconds)) gap=\(String(format: "%.3f", gap.seconds)) cadence=\(String(format: "%.3f", gap.cadence))", category: .session) + } + + private func commitReplayCandidate() { + let boundary = LivePacketReplayGuard.videoBoundarySummary(replayPending.map { + (signature: $0.sample?.signature, corrupt: damagedLivePacketStream($0.packet, origin: $0.origin) != nil, + duplicate: $0.isDuplicate, keyframe: ($0.packet.pointee.flags & AV_PKT_FLAG_KEY) != 0) + }) + EngineLog.emit("[ReplayVideoBoundary] route=native damaged=\(boundary.damaged) replaced=\(boundary.replaced) unreplaced=\(boundary.unreplaced) retained=\(boundary.retained) keyframes=\(boundary.keyframes) superseded=\(boundary.superseded) untimed=\(replayPending.filter { $0.untimedBoundaryVideo }.count)", category: .session) + for entry in replayPending { + // Once both tracks prove the overlap, discard its damaged boundary packets too. + // A truncated PES can carry valid timestamps beyond the retained audio frontier. + let damaged = damagedLivePacketStream(entry.packet, origin: entry.origin) != nil + if entry.isDuplicate || damaged || entry.untimedBoundaryVideo { + if damaged { logDamagedLivePacket(entry.packet, origin: entry.origin, action: "discarded") } + var packet: UnsafeMutablePointer? = entry.packet + trackedPacketFree(&packet) + } else { + replayReady.append(entry) + } + } + let order = LivePacketReplayGuard.verifiedPacketOrder(replayReady.map { $0.sample?.signature }) + let kept = Set(order) + for index in replayReady.indices where !kept.contains(index) { + var duplicate: UnsafeMutablePointer? = replayReady[index].packet + trackedPacketFree(&duplicate) + } + replayReady = order.map { replayReady[$0] } + for entry in replayReady { + if let signature = entry.sample?.signature { liveReplayGuard.retainForwardedReplayPacket(signature) } + } + replayPending.removeAll(keepingCapacity: true) + replayPendingBytes = 0 + noCutWatchdog?.setReplayChecking(false, at: Date()) + } + + private func rollbackReplayCandidate(reason: String, + divergentStream: LivePacketReplayGuard.Stream? = nil) throws { + if liveReplayGuard.isHoldingDamagedBoundary { + forwardUnverifiedDamagedBoundary() + return + } + if let evidence = liveReplayGuard.confirmedPrefix { + let code: String = switch reason { + case let value where value.hasPrefix("track diverged"): "track_diverged" + case "source read failed before overlap was confirmed": "read_failed" + case "source ended before overlap was confirmed": "source_ended" + case "bounded overlap check reached its limit": "bounded_limit" + default: "unknown" + } + let stream = divergentStream.map { $0 == .video ? "video" : "audio" } ?? "none" + EngineLog.emit( + "[HLSSegmentProducer] verified live replay interrupted: reason=\(code) stream=\(stream) " + + "videoMatches=\(evidence.videoPackets) audioMatches=\(evidence.audioPackets) " + + "videoSeconds=\(String(format: "%.2f", evidence.videoSeconds)) " + + "audioSeconds=\(String(format: "%.2f", evidence.audioSeconds)); " + + "requesting fresh source without forwarding overlap", + category: .session) + freeReplayPackets() + interruptedReplayHistory = liveReplayGuard.sourceContinuation() + liveReplayGuard.reset() + throw InterruptedSourceReplay() + } + replayReady.append(contentsOf: replayPending) + replayPending.removeAll(keepingCapacity: true) + replayPendingBytes = 0 + liveReplayGuard.reset() + noCutWatchdog?.setReplayChecking(false, at: Date()) + EngineLog.emit( + "[HLSSegmentProducer] live source overlap unconfirmed: \(reason); " + + "forwarding all packets to normal discontinuity handling", + category: .session) + } + + private func forwardUnverifiedDamagedBoundary() { + replayReady.append(contentsOf: replayPending) + replayPending.removeAll(keepingCapacity: true) + replayPendingBytes = 0 + liveReplayGuard.releaseDamagedBoundary() + noCutWatchdog?.setReplayChecking(false, at: Date()) + EngineLog.emit("[HLSSegmentProducer] live damaged boundary unconfirmed: forwarding retained packets without resetting source history", category: .session) + } + + private func freeReplayPackets() { + for entry in replayPending + replayReady.dropFirst(replayReadyIndex) { + var packet: UnsafeMutablePointer? = entry.packet + trackedPacketFree(&packet) } - return read + replayPending.removeAll() + replayReady.removeAll() + replayReadyIndex = 0 + replayPendingBytes = 0 + replayDeferredError = nil + noCutWatchdog?.setReplayChecking(false, at: Date()) + } + + private func liveReplaySample(packet: UnsafeMutablePointer, origin: PacketOrigin) + -> LiveReplaySample? { + // Only the single-demuxer stream-copy path has one source timeline for both tracks. + // Side audio and bridged audio have independent clocks; the existing rebase owns them. + guard isLive, sideAudioDemuxer == nil, audioConfig?.bridge == nil, + packet.pointee.dts != Int64.min, packet.pointee.pts != Int64.min, + packet.pointee.size > 0, let bytes = packet.pointee.data else { return nil } + let stream: LivePacketReplayGuard.Stream + let timeBaseSeconds: Double + if origin == .main, packet.pointee.stream_index == videoStreamIndex { + stream = .video + timeBaseSeconds = sourceVideoTbSeconds + } else if let audio = audioConfig, + packet.pointee.stream_index == audio.sourceStreamIndex, + origin == .main { + stream = .audio + timeBaseSeconds = audioSourceTbSeconds + } else { + return nil + } + guard timeBaseSeconds > 0 else { return nil } + let signature = LivePacketReplayGuard.Signature( + stream: stream, dts: packet.pointee.dts, pts: packet.pointee.pts, + payload: UnsafeRawBufferPointer(start: bytes, count: Int(packet.pointee.size))) + return LiveReplaySample(signature: signature, + seconds: Double(packet.pointee.dts) * timeBaseSeconds, + timeBaseSeconds: timeBaseSeconds) } /// AE#514: the video stream and the audio stream this session plays, on the source axis the engine @@ -3044,6 +3406,7 @@ final class HLSSegmentProducer: @unchecked Sendable { let packet: UnsafeMutablePointer let origin: PacketOrigin + let replaySample: LiveReplaySample? if !audioWaitForVideo, hasPregateAudioToReplay { // #74: once the video gate opens, drain the buffered head-of-stream audio in DTS // order before reading further source packets. These were already counted in @@ -3060,6 +3423,7 @@ final class HLSSegmentProducer: @unchecked Sendable { } packet = entry.0 origin = entry.1 + replaySample = nil pregateAudioBufferBytes -= Int(packet.pointee.size) } else { guard let read = try readNextSourcePacket() else { @@ -3075,6 +3439,7 @@ final class HLSSegmentProducer: @unchecked Sendable { } packet = read.packet origin = read.origin + replaySample = read.replaySample packetsRead += 1 noCutWatchdog?.notePacketRead() } @@ -3293,6 +3658,7 @@ final class HLSSegmentProducer: @unchecked Sendable { exitReason = .sourceReplay break readLoop } + liveReplayGuard.reset() let (newShift, continuationDts) = Self.rebasedVideoShift( srcDts: packet.pointee.dts, lastSrcDts: lastVideoSourceDts, @@ -3375,6 +3741,7 @@ final class HLSSegmentProducer: @unchecked Sendable { exitReason = .sourceReplay break readLoop } + liveReplayGuard.reset() if pendingAudioShiftOverride != nil { EngineLog.emit( "[HLSSegmentProducer] audio rebase: discarding stale shift override (new boundary)", @@ -3982,6 +4349,12 @@ final class HLSSegmentProducer: @unchecked Sendable { continue } + // Only packets that passed the live gates and output timestamp checks enter the + // history. Their original source signature was captured before timestamp repair. + if let sample = replaySample { + liveReplayGuard.record(sample.signature, sourceSeconds: sample.seconds) + } + if isVideoPkt { if !loggedFirstVideoPktInfo { loggedFirstVideoPktInfo = true @@ -4023,6 +4396,23 @@ final class HLSSegmentProducer: @unchecked Sendable { } // Live: keyframe cutter uses shifted pts. VOD: unused; routing uses prev.dts at look-behind site. let isVideoKeyframe = (packet.pointee.flags & AV_PKT_FLAG_KEY) != 0 + // #731: a bridge that encodes on its own queue hands packets back a feed or more + // late, and they are routed by the cutter (sequential origins) and the open muxer + // (the `max` in `ensureMuxer`). Settle it before this packet advances the cutter + // or the look-behind write below cuts, so every packet is routed where a + // synchronous encode routed it. A cut the audio starts itself writes in order. + if !isLive, let audio = audioConfig, let bridge = audio.bridge { + let advancesCutter = audioFollowsVideoCut && isVideoKeyframe + && vodCutter.peekIndex( + pts: planBoundaryAxis.timestamp(dts: packet.pointee.dts, pts: packet.pointee.pts), + isKeyframe: true) != vodCutter.current + let lookBehindCuts = pendingVideoPkt != nil && currentMuxer != nil + && pendingVideoSegIndex > currentMuxerSegmentIndex + if advancesCutter || lookBehindCuts, !writeBridgedAudio(bridge.settle(), audio: audio) { + exitReason = .muxerFailed + break readLoop + } + } // VOD now cuts keyframe-gated like live (and like FFmpeg's hls muxer): a segment opens // at the IRAP that reaches its plan boundary, so the IRAP is the segment's first sample // and its open-GOP RASL leading pictures stay with it (#92). Routing by DTS against PTS @@ -4146,28 +4536,7 @@ final class HLSSegmentProducer: @unchecked Sendable { ) continue } - var bridgedMuxerGone = false - for fp in flacPackets { - var fpVar: UnsafeMutablePointer? = fp - if bridgedMuxerGone { - trackedPacketFree(&fpVar) - continue - } - let fpSeg = bridgedAudioSegmentIndex(fp, audio: audio) - guard let muxer = ensureMuxer(forSegmentIndex: fpSeg) else { - trackedPacketFree(&fpVar) - bridgedMuxerGone = true - continue - } - fp.pointee.stream_index = muxer.audioOutputStreamIndex - av_packet_rescale_ts(fp, audio.inputTimeBase, muxer.muxerAudioTimeBase) - let prime = copyAudioPrimeCandidate(fp) - if muxer.writePacket(fp).rc >= 0, let prime { - audioMoovPrimeFrame = prime - } - trackedPacketFree(&fpVar) - } - if bridgedMuxerGone { + if !writeBridgedAudio(flacPackets, audio: audio) { exitReason = .muxerFailed break readLoop } @@ -4205,6 +4574,8 @@ final class HLSSegmentProducer: @unchecked Sendable { continue } } + } catch is InterruptedSourceReplay { + exitReason = checkShouldStop() ? .stopRequested : .sourceReplay } catch { if case DemuxerError.readFailed(let code) = error { lastError = code @@ -4262,6 +4633,7 @@ final class HLSSegmentProducer: @unchecked Sendable { } } + freeReplayPackets() freeMergeLookaheads() // #74: free any head-of-stream audio still buffered (e.g. the video gate never opened on a @@ -4269,6 +4641,11 @@ final class HLSSegmentProducer: @unchecked Sendable { freeUnreplayedPregateAudio() // Flush look-behind; fallback duration produces tail-correct trun for the final fragment. + // #731: the last keyframe can open a final segment; what the bridge still encodes belongs + // before that cut. Only an EOF adopts the open segment, so only an EOF needs it. + if case .eof = exitReason, let audio = audioConfig, let bridge = audio.bridge { + _ = writeBridgedAudio(bridge.settle(), audio: audio) + } if let prev = pendingVideoPkt { let prevSeg = pendingVideoSegIndex // unified: live + VOD both carry the routed index if let muxer = ensureMuxer(forSegmentIndex: prevSeg) { @@ -4337,6 +4714,28 @@ final class HLSSegmentProducer: @unchecked Sendable { onPumpFinished?(exitReason) } + /// Route and mux packets a bridge returned. False when the muxer is gone; every packet is freed + /// either way. + private func writeBridgedAudio(_ packets: [UnsafeMutablePointer], audio: AudioConfig) -> Bool { + var muxerGone = false + for fp in packets { + var fpVar: UnsafeMutablePointer? = fp + defer { trackedPacketFree(&fpVar) } + if muxerGone { continue } + guard let muxer = ensureMuxer(forSegmentIndex: bridgedAudioSegmentIndex(fp, audio: audio)) else { + muxerGone = true + continue + } + fp.pointee.stream_index = muxer.audioOutputStreamIndex + av_packet_rescale_ts(fp, audio.inputTimeBase, muxer.muxerAudioTimeBase) + let prime = copyAudioPrimeCandidate(fp) + if muxer.writePacket(fp).rc >= 0, let prime { + audioMoovPrimeFrame = prime + } + } + return !muxerGone + } + /// The segment a bridged audio packet belongs to. Live and sequential audio follow the video /// cutter; everything else is routed by the packet's own time against the plan. One helper for the /// per-feed and the end-of-file flush, because the flush missing the sequential rule opened a plan diff --git a/Sources/AetherEngine/Video/HLSVideoEngine+AudioRoute.swift b/Sources/AetherEngine/Video/HLSVideoEngine+AudioRoute.swift index e64178023..68f9b5f08 100644 --- a/Sources/AetherEngine/Video/HLSVideoEngine+AudioRoute.swift +++ b/Sources/AetherEngine/Video/HLSVideoEngine+AudioRoute.swift @@ -167,6 +167,7 @@ extension HLSVideoEngine { streamCopyAudio: HLSSegmentProducer.AudioConfig?, sourceAudioStreamIndex: Int32, sourceAudioStream: UnsafeMutablePointer?, + audioDemuxer: Demuxer, sourceCarriesAudio: Bool, audioHLSCodecs: inout String?, audioLanguage: String? = nil @@ -280,11 +281,12 @@ extension HLSVideoEngine { ) } - // TrueHD Atmos with object rendering requested: tried before the channel bridges, which it - // falls back to on any failure (see buildSpatialAudioProducerIfEligible). + // #731: TrueHD Atmos or DTS:X with object rendering requested. Tried before the channel bridges, + // which it falls back to on any failure (see buildSpatialAudioProducerIfEligible). if !forcedDrop, let audioStream = sourceAudioStream, sourceAudioStreamIndex >= 0, let prod = buildSpatialAudioProducerIfEligible( audioStream: audioStream, + audioDemuxer: audioDemuxer, sourceAudioStreamIndex: sourceAudioStreamIndex, sourceCodecLabel: sourceCodecLabel, audioHLSCodecs: &audioHLSCodecs, diff --git a/Sources/AetherEngine/Video/HLSVideoEngine+LiveReopen.swift b/Sources/AetherEngine/Video/HLSVideoEngine+LiveReopen.swift index 3bbb10274..4d2eb0aa6 100644 --- a/Sources/AetherEngine/Video/HLSVideoEngine+LiveReopen.swift +++ b/Sources/AetherEngine/Video/HLSVideoEngine+LiveReopen.swift @@ -83,9 +83,9 @@ extension HLSVideoEngine { sourceReopenable: Bool ) -> Bool { switch reason { - case .segmentStall, .sourceReplay: + case .segmentStall: return true - case .eof, .readError, .keyframeStarvation: + case .sourceReplay, .eof, .readError, .keyframeStarvation: return !sourceReopenable case .stopRequested, .muxerFailed, .backpressureWedge, .needsAudioSampleEntryPrime: // muxerFailed / needsAudioSampleEntryPrime: handleLiveMuxerFailure and the AE#222 arm rebuild @@ -180,10 +180,61 @@ extension HLSVideoEngine { /// cannot drift apart: the decision plus BOTH of its effects. The halt is the half that is easy /// to lose, and losing it is what the -15410 zombie is made of; onLiveSourceReset alone (what /// the #65 stall ladder publishes) leaves the dead provider still advertising blocking reloads. - func escalateLiveReopenExhaustion(transport: LiveReopenTransport) { + func escalateLiveReopenExhaustion(transport: LiveReopenTransport, replayRejected: Bool? = nil) { guard Self.liveReopenExhaustionEscalatesToHost(transport: transport) else { return } provider?.markLiveProductionHalted() - onLiveSourceReset?() + let (rejected, failed) = restartLock.withLock { + if replayRejected == false { + liveRecoveryHasVerifiedReplay = false + liveSourceRequiresNegotiation = true + } + let rejected = replayRejected ?? liveRecoveryHasVerifiedReplay + liveRecoveryProducer = nil + return (rejected, producer) + } + if let failed { + _ = retireLiveSourceConnection(failedProducer: failed) + } + notifyLiveSourceReset(replayRejected: rejected) + } + + /// Concurrent retry requests coalesce. Reopening never replaces the + /// consumer item or cache; the host owns the delay between exhausted recovery rounds. + func retryLiveSourceRecovery() -> Bool { + restartLock.lock() + let transport = Self.liveReopenTransport(sourceReopenableByURL: sourceReopenableByURL, + hasCustomSourceReopenFactory: customSourceReopenFactory != nil) + guard isLiveSession, !liveSourceRequiresNegotiation, let current = producer, + liveRecoveryHasVerifiedReplay || (provider?.liveContinuationPoint().nextIndex ?? 0) > 0, + transport != .none else { + restartLock.unlock() + return false + } + guard liveRecoveryProducer !== current else { + restartLock.unlock() + return true + } + liveRecoveryProducer = current + barrenReopenCycles = 0 + provider?.resumeLiveProduction() + restartLock.unlock() + current.stop() + guard retireLiveSourceConnection(failedProducer: current) else { return false } + EngineLog.emit("[HLSVideoEngine] host resumed live source recovery with retained cache and replay history", category: .session) + onLiveSourceReopening?() + BlockingWork.detached(priority: .userInitiated) { [weak self] in + guard let self, self.currentProducerIs(current) else { return } + guard current.waitForFinish(timeout: 5) else { + // A custom reader that ignores cancellation still owns the history. Never + // copy it or replace its demuxer until the producer has relinquished it. + if self.currentProducerIs(current) { + self.escalateLiveReopenExhaustion(transport: transport) + } + return + } + await self.performLiveReopen(failedProducer: current) + } + return true } func handlePumpFinished(_ prod: HLSSegmentProducer, @@ -193,6 +244,7 @@ extension HLSVideoEngine { // doomed the replacement demuxer and queued an authoritative restart at a stale position. restartLock.lock() let isCurrent = producer === prod + let alreadyRecovering = liveRecoveryProducer === prod restartLock.unlock() guard isCurrent else { if case .stopRequested = reason {} else { @@ -203,6 +255,7 @@ extension HLSVideoEngine { } return } + guard !alreadyRecovering else { return } // #65 (VOD only): a broken backpressure wedge means AVPlayer is stuck behind a parked producer. // Re-anchor the producer on AVPlayer's real position so the segments it is starved for get produced. if case .backpressureWedge = reason { @@ -341,14 +394,17 @@ extension HLSVideoEngine { // muxerFailed and needsAudioSampleEntryPrime never reach here (their arms above return first). return case .sourceReplay: - // Server restarted stream from beginning (Jellyfin transcode respawn); URL reopen would replay stale content. Delegate to host for fresh negotiation. + if reopenTransport == .none { + notifyLiveSourceReset(replayRejected: true) + return + } + // Retaining the cache also retains the already-admitted media. A full host + // retune loses that history and can turn a fresh connection into another replay. EngineLog.emit( - "[HLSVideoEngine] live source replayed from start after reconnect; " - + "requesting host retune (fresh playback session)", + "[HLSVideoEngine] live source repeated previously accepted media; " + + "reopening source while retaining cache and replay history", category: .session ) - onLiveSourceReset?() - return case .segmentStall: // SSAI ad pod the cutter can't cut through; URL reopen would re-enter it. Delegate to host for server-muxed fallback. // @@ -399,6 +455,9 @@ extension HLSVideoEngine { barrenCycles: barrenReopenCycles, cap: Self.maxBarrenReopenCycles ) + if case .sourceReplay = reason { + liveRecoveryHasVerifiedReplay = true + } barrenReopenCycles = reopenDecision.newBarrenCycles lastReopenSegmentCount = segmentsNow let barrenNow = reopenDecision.newBarrenCycles @@ -419,7 +478,12 @@ extension HLSVideoEngine { "[HLSVideoEngine] live pump exited (reason=\(reason)); starting reopen", category: .session ) - Task.detached(priority: .userInitiated) { [weak self] in + restartLock.lock() + guard producer === prod, liveRecoveryProducer !== prod else { restartLock.unlock(); return } + liveRecoveryProducer = prod + restartLock.unlock() + onLiveSourceReopening?() + BlockingWork.detached(priority: .userInitiated) { [weak self] in await self?.performLiveReopen(failedProducer: prod) } } @@ -519,7 +583,7 @@ extension HLSVideoEngine { category: .session ) let sessionEpoch = sessionEpochSnapshot() - Task.detached(priority: .userInitiated) { [weak self, weak deadProducer] in + BlockingWork.detached(priority: .userInitiated) { [weak self, weak deadProducer] in try? await Task.sleep(nanoseconds: UInt64(delay * 1_000_000_000)) guard let self else { return } self.fireMeteredRevive(at: idx, deadProducer: deadProducer, sessionEpoch: sessionEpoch) @@ -657,7 +721,7 @@ extension HLSVideoEngine { + "audio moov prime (audio stream-copy preserved)", category: .session ) - Task.detached(priority: .userInitiated) { [weak self] in + BlockingWork.detached(priority: .userInitiated) { [weak self] in self?.rebuildLiveProducerInPlace(failed: prod) } return @@ -704,6 +768,15 @@ extension HLSVideoEngine { // TRANSCODE, and the two ask a host for opposite things: `vodSourceFailed` reads as "the // source is gone" and ends a fallback ladder, while a second player that decodes the track // itself plays this file. So name the bridge when the bridge is the one that stayed quiet. + // + // A full segment volume comes first: it starves every write, so it explains a quiet bridge + // as well as an unwritable moov, and neither the source nor its audio is at fault. A host + // reading `vodSourceFailed` here ended its ladder on a file that plays once space is freed. + if cache?.storageExhausted == true { + surfaceVODSourceFailure(FFmpegErr.enospc, "Device storage is full: video segments cannot be written", + kind: .storageExhausted) + return + } if let bridge = audioBridge?.feedStats, bridge.packetsEmitted == 0 { EngineLog.emit( "[HLSVideoEngine] AE#396 the moov was never buildable because the audio bridge " @@ -735,8 +808,8 @@ extension HLSVideoEngine { /// a frozen playlist, AVPlayer parked on it, and the session zombified until the viewer zapped away. /// The connection is healthy (the muxer died, not the socket), so the recovery rebuilds the producer /// IN PLACE on the same demuxer and provider at the live continuation point. A reopen is the wrong - /// tool here: `performLiveReopen` opens its fresh connection BEFORE closing the old demuxer, which - /// double-connects against a healthy socket and breaks single-connection portals. + /// tool here: a healthy socket needs no replacement. Source reopens retire their failed + /// connection first, but this path can continue producing without any network negotiation. func handleLiveMuxerFailure(_ prod: HLSSegmentProducer) { restartLock.lock() let nextNow = provider?.liveContinuationPoint().nextIndex ?? 0 @@ -766,7 +839,7 @@ extension HLSVideoEngine { category: .session ) // handlePumpFinished runs on the dying pump thread; hop off it like the reopen path does. - Task.detached(priority: .userInitiated) { [weak self] in + BlockingWork.detached(priority: .userInitiated) { [weak self] in self?.rebuildLiveProducerInPlace(failed: prod) } } @@ -787,12 +860,14 @@ extension HLSVideoEngine { baseIndex: nextIndex, liveReopenOutputEndSeconds: outputEnd ) + newProd.continueLiveReplayHistory(from: failed) newProd.firstSegmentDiscontinuous = true let newEpoch = newProd.epoch newProd.onVideoShiftKnown = { [weak self] shiftPts, _, _ in self?.handleLiveTimelineRebase(shiftPts, seamOutputSeconds: outputEnd, producerEpoch: newEpoch) } producer = newProd + liveRecoveryProducer = nil restartLock.unlock() retireProducer(failed) // AE#443: the session's totals outlive the producer that held them newProd.start() @@ -952,7 +1027,7 @@ extension HLSVideoEngine { ) { let fetchesBefore = provider?.mediaFetchCount ?? 0 let epoch = sessionEpochSnapshot() - Task.detached(priority: .userInitiated) { [weak self] in + BlockingWork.detached(priority: .userInitiated) { [weak self] in try? await Task.sleep(nanoseconds: UInt64(Self.consumerReengageGraceSeconds * 1_000_000_000)) guard let self, self.isSessionEpochCurrent(epoch) else { return } guard (self.provider?.mediaFetchCount ?? 0) == fetchesBefore, @@ -961,7 +1036,17 @@ extension HLSVideoEngine { } } + private func notifyLiveSourceReset(replayRejected: Bool) { + if replayRejected, let onLiveSourceReplayExhausted { + EngineLog.emit("[HLSVideoEngine] verified live replay recovery parked; host can retry with retained cache and history", category: .session) + onLiveSourceReplayExhausted() + } else { + onLiveSourceReset?() + } + } + private func performLiveReopen(failedProducer: HLSSegmentProducer) async { + guard retireLiveSourceConnection(failedProducer: failedProducer) else { return } let transport = Self.liveReopenTransport( sourceReopenableByURL: sourceReopenableByURL, hasCustomSourceReopenFactory: customSourceReopenFactory != nil) @@ -1017,6 +1102,17 @@ extension HLSVideoEngine { freshReader?.close() continue } + guard reopenedTrackLayoutMatches(dem, failedProducer: failedProducer) else { + dem.close() + freshReader?.close() + // Saved muxer parameters and packet timestamps cannot describe a new layout. + if currentProducerIs(failedProducer) { + EngineLog.emit("[HLSVideoEngine] live reopen track layout changed; requesting host negotiation", + category: .session) + escalateLiveReopenExhaustion(transport: transport, replayRejected: false) + } + return + } switch finishLiveReopen(failedProducer: failedProducer, dem: dem, freshReader: freshReader, attempt: attempt) { @@ -1037,6 +1133,50 @@ extension HLSVideoEngine { escalateLiveReopenExhaustion(transport: transport) } + /// Release the failed source's socket/lease BEFORE asking a single-slot origin again. + /// markClosed keeps codec parameters and byte counters alive until the validated swap. + func retireLiveSourceConnection(failedProducer: HLSSegmentProducer) -> Bool { + restartLock.lock() + guard producer === failedProducer else { restartLock.unlock(); return false } + let failedDemuxer = demuxer + restartLock.unlock() + failedDemuxer?.markClosed() + EngineLog.emit("[HLSVideoEngine] live source connection retired before reopen", category: .session) + return true + } + + func reopenedTrackLayoutMatches(_ dem: Demuxer, failedProducer: HLSSegmentProducer) -> Bool { + restartLock.lock() + defer { restartLock.unlock() } + guard producer === failedProducer, let previous = demuxer else { return false } + // Compare SOURCE parameters. Saved audio codecpar may describe a bridge's AAC/FLAC + // output rather than the AC-3/TrueHD source, and TS AAC extradata may be synthesized. + let priorVideo = previous.withStream(at: videoStreamIndex) { stream in + let codec = stream.pointee.codecpar.pointee + return (codec.codec_id, stream.pointee.time_base.num, stream.pointee.time_base.den, + codec.width, codec.height) + } + let nextVideo = dem.withStream(at: videoStreamIndex) { stream in + let codec = stream.pointee.codecpar.pointee + return (codec.codec_id, stream.pointee.time_base.num, stream.pointee.time_base.den, + codec.width, codec.height) + } + guard let priorVideo, let nextVideo, priorVideo == nextVideo else { return false } + guard let audio = savedAudioConfig, sideAudioDemuxer == nil else { return true } + let priorAudio = previous.withStream(at: audio.sourceStreamIndex) { stream in + let codec = stream.pointee.codecpar.pointee + return (codec.codec_id, stream.pointee.time_base.num, stream.pointee.time_base.den, + codec.sample_rate, codec.ch_layout.nb_channels) + } + let nextAudio = dem.withStream(at: audio.sourceStreamIndex) { stream in + let codec = stream.pointee.codecpar.pointee + return (codec.codec_id, stream.pointee.time_base.num, stream.pointee.time_base.den, + codec.sample_rate, codec.ch_layout.nb_channels) + } + guard let priorAudio, let nextAudio else { return false } + return priorAudio == nextAudio + } + /// NSLock unavailable from async contexts; this synchronous helper wraps the check. private func currentProducerIs(_ p: HLSSegmentProducer?) -> Bool { restartLock.lock() @@ -1087,6 +1227,7 @@ extension HLSVideoEngine { baseIndex: nextIndex, liveReopenOutputEndSeconds: outputEnd ) + newProd.continueLiveReplayHistory(from: failedProducer) // Fresh connection joins the broadcast at "now"; source clock jumps, so the seam carries #EXT-X-DISCONTINUITY. Shift handoff deferred to seam to avoid jumping the host clock while pre-loss content is on screen. newProd.firstSegmentDiscontinuous = true let newEpoch = newProd.epoch @@ -1097,6 +1238,7 @@ extension HLSVideoEngine { // #199: the new demuxer reads from the factory-vended reader; take ownership so stop() // and the next reopen close it. The initial load's reader stays engine-owned. let oldReader = reopenCustomReader + liveRecoveryProducer = nil if freshReader != nil { reopenCustomReader = freshReader } restartLock.unlock() // AE#443: the swap is final only here; the catch below puts `oldDem` back, and folding it diff --git a/Sources/AetherEngine/Video/HLSVideoEngine+SpatialAudio.swift b/Sources/AetherEngine/Video/HLSVideoEngine+SpatialAudio.swift index d8216d836..56dd58edd 100644 --- a/Sources/AetherEngine/Video/HLSVideoEngine+SpatialAudio.swift +++ b/Sources/AetherEngine/Video/HLSVideoEngine+SpatialAudio.swift @@ -5,13 +5,33 @@ import AetherLibavutil extension HLSVideoEngine { + /// The object-audio format a source would be rendered as, before it is confirmed. + enum ObjectAudioSource: Equatable { + /// TrueHD that FFmpeg marked Atmos. + case trueHDAtmos + /// Lossless DTS-HD Master Audio, which may carry DTS:X whatever FFmpeg's label says, so + /// LibDTSX decides on its first frames (see `dtsxVerdict`). + case dtsHDMasterAudio + + /// How the log and the pipeline description name it. + var name: String { + switch self { + case .trueHDAtmos: return "TrueHD Atmos" + case .dtsHDMasterAudio: return "DTS:X" + } + } + } + /// The bed a source should be rendered into, or nil to keep the ordinary bridge. /// - /// TrueHD only, and only when FFmpeg marked the stream Atmos (`AV_PROFILE_TRUEHD_ATMOS`, which - /// mlpdec sets from the major sync while the probe decodes a frame): a TrueHD track without an - /// object presentation gains nothing from rendering and would lose its lossless 7.1 for it. - /// 48 kHz, or not yet known, since TrueHD reports its rate from the first frame and Atmos is - /// only ever authored at 48 kHz. + /// TrueHD only when FFmpeg marked the stream Atmos (`AV_PROFILE_TRUEHD_ATMOS`, which mlpdec sets + /// from the major sync while the probe decodes a frame): a TrueHD track without an object + /// presentation gains nothing from rendering and would lose its lossless 7.1 for it. DTS when it + /// is DTS-HD Master Audio, with or without FFmpeg's DTS:X label: FFmpeg names only two of DTS:X's + /// markers, so the label misses some DTS:X, and a DTS-HD MA track that turns out not to be DTS:X + /// is refused before the bridge is built (`buildSpatialAudioProducerIfEligible`). 48 kHz, or not + /// yet known, since TrueHD reports its rate from the first frame and both formats are only ever + /// authored at 48 kHz. static func spatialRenderingLayout( rendering: ObjectAudioRendering, codecID: AVCodecID, @@ -19,19 +39,62 @@ extension HLSVideoEngine { sampleRate: Int32 ) -> SpatialSpeakerLayout? { guard let layout = rendering.layout, - codecID == AV_CODEC_ID_TRUEHD, - profile == AV_PROFILE_TRUEHD_ATMOS, + objectAudioSource(codecID: codecID, profile: profile) != nil, sampleRate == 0 || sampleRate == Int32(ObjectAudioRendering.sampleRate) else { return nil } return layout } + static func objectAudioSource(codecID: AVCodecID, profile: Int32) -> ObjectAudioSource? { + switch (codecID, profile) { + case (AV_CODEC_ID_TRUEHD, AV_PROFILE_TRUEHD_ATMOS): + return .trueHDAtmos + case (AV_CODEC_ID_DTS, AV_PROFILE_DTS_HD_MA), + (AV_CODEC_ID_DTS, AV_PROFILE_DTS_HD_MA_X), + (AV_CODEC_ID_DTS, AV_PROFILE_DTS_HD_MA_X_IMAX): + return .dtsHDMasterAudio + default: + return nil + } + } + + /// Packets of the source's head `dtsxVerdict` may look at. LibDTSX needs three frames of the + /// track, which a muxed file interleaves within the first few dozen packets; the same budget as + /// the planner's head scans bounds a file whose audio starts late. + static let dtsxVerdictPacketBudget = 512 + /// Bytes the peek may hold. Unlike the planner's scans, peeked packets stay resident until the + /// producer reads them, video included, so a late-starting track in a 4K remux must not pin + /// hundreds of megabytes; three DTS-HD frames normally sit within the first few of them. + static let dtsxVerdictByteBudget = 24 << 20 + + /// Shows LibDTSX the audio stream's first packets, without consuming them (the producer reads the + /// same packets afterwards), until it says whether the track is DTS:X it renders. Nil when a + /// budget ran out or the source could not be read first. + func dtsxVerdict( + decoder: DTSXObjectAudioDecoder, + demuxer: Demuxer, + streamIndex: Int32 + ) -> DTSXObjectAudioDecoder.Verdict? { + var verdict: DTSXObjectAudioDecoder.Verdict? + var heldBytes = 0 + try? demuxer.peekPackets(maxPackets: Self.dtsxVerdictPacketBudget) { packet in + heldBytes += Int(max(packet.pointee.size, 0)) + if heldBytes > Self.dtsxVerdictByteBudget { return true } + guard packet.pointee.stream_index == streamIndex, + let data = packet.pointee.data, packet.pointee.size > 0 else { return false } + verdict = decoder.verdict(feeding: UnsafeRawBufferPointer(start: data, count: Int(packet.pointee.size))) + return verdict != nil + } + return verdict + } + /// Build the producer on a `SpatialAudioBridge` when the host asked for object rendering and the - /// source qualifies. Nil means "not this route": ineligible, unsupported OS, or a bridge/header - /// failure, each logged, and the caller carries on with the ordinary bridge cascade, so asking - /// for Atmos never costs a session its audio. + /// source qualifies. Nil means "not this route": ineligible, unsupported OS, not DTS:X, or a + /// bridge/header failure, each logged, and the caller carries on with the ordinary bridge + /// cascade, so asking for Atmos never costs a session its audio. func buildSpatialAudioProducerIfEligible( audioStream: UnsafeMutablePointer, + audioDemuxer: Demuxer, sourceAudioStreamIndex: Int32, sourceCodecLabel: String, audioHLSCodecs: inout String?, @@ -40,7 +103,8 @@ extension HLSVideoEngine { let par = audioStream.pointee.codecpar.pointee guard let layout = Self.spatialRenderingLayout( rendering: objectAudioRendering, codecID: par.codec_id, - profile: par.profile, sampleRate: par.sample_rate) + profile: par.profile, sampleRate: par.sample_rate), + let source = Self.objectAudioSource(codecID: par.codec_id, profile: par.profile) else { if par.codec_id == AV_CODEC_ID_TRUEHD { if objectAudioRendering != .off { @@ -59,12 +123,28 @@ extension HLSVideoEngine { category: .session ) } + } else if par.codec_id == AV_CODEC_ID_DTS, objectAudioRendering != .off { + // Lossy DTS has no DTS:X to render; only the lossless profiles are offered to LibDTSX. + EngineLog.emit( + "[HLSVideoEngine] object rendering requested but DTS is not 48 kHz DTS-HD Master Audio " + + "(profile=\(par.profile) rate=\(par.sample_rate)); keeping the channel bridge", + category: .session + ) } return nil } + // VOD only: the live reopen and splice paths re-time the bridge in ways this one's encoder + // latency and fixed packet stamping do not follow. + guard !isLiveSession else { + EngineLog.emit( + "[HLSVideoEngine] \(source.name) rendering is VOD only; keeping the channel bridge on this live session", + category: .session + ) + return nil + } guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { EngineLog.emit( - "[HLSVideoEngine] TrueHD Atmos rendering needs OS 26 (APAC encoder API); keeping the channel bridge", + "[HLSVideoEngine] \(source.name) rendering needs OS 26 (APAC encoder API); keeping the channel bridge", category: .session ) return nil @@ -72,12 +152,52 @@ extension HLSVideoEngine { let bridge: SpatialAudioBridge do { - let decoder = try TrueHDObjectAudioDecoder() + let decoder: ObjectAudioDecoding + switch source { + case .trueHDAtmos: + decoder = try TrueHDObjectAudioDecoder() + case .dtsHDMasterAudio: + let dtsx = try DTSXObjectAudioDecoder() + // On a resume the verdict reads where the first producer starts, not the file head + // that step 8's seek would then drop; LibDTSX decides mid-stream as well. + if audioDemuxer === demuxer { + seekToInitialProducerStart(audioDemuxer) + demuxerAtInitialProducerStart = true + } + let started = DispatchTime.now() + let verdict = dtsxVerdict(decoder: dtsx, demuxer: audioDemuxer, streamIndex: sourceAudioStreamIndex) + let ms = Double(DispatchTime.now().uptimeNanoseconds - started.uptimeNanoseconds) / 1e6 + switch verdict { + case .renders(let presentation): + EngineLog.emit( + "[HLSVideoEngine] DTS-HD MA track is DTS:X \(presentation) (LibDTSX, " + + "\(String(format: "%.0f", ms)) ms)", + category: .session + ) + // The verdict decoded the first packets; the bridge starts from the same ones again. + dtsx.reset() + decoder = dtsx + case .refused(let reason): + EngineLog.emit( + "[HLSVideoEngine] DTS-HD MA track is not DTS:X LibDTSX renders (\(reason)); " + + "keeping the channel bridge", + category: .session + ) + return nil + case nil: + EngineLog.emit( + "[HLSVideoEngine] no DTS:X verdict within \(Self.dtsxVerdictPacketBudget) packets or " + + "\(Self.dtsxVerdictByteBudget >> 20) MiB; keeping the channel bridge", + category: .session + ) + return nil + } + } bridge = try SpatialAudioBridge( srcTimeBase: audioStream.pointee.time_base, layout: layout, decoder: decoder) } catch { EngineLog.emit( - "[HLSVideoEngine] ERROR: TrueHD Atmos rendering unavailable (\(error)); keeping the channel bridge", + "[HLSVideoEngine] ERROR: \(source.name) rendering unavailable (\(error)); keeping the channel bridge", category: .session ) return nil @@ -108,11 +228,16 @@ extension HLSVideoEngine { let producer = try makeProducer(baseIndex: initialProducerBaseIndex) audioHLSCodecs = bridge.hlsCodecs // Short on purpose: hosts append it to a track title in one-line stats rows. - audioPipelineDescription = "\(sourceCodecLabel) Atmos → APAC \(layout.rawValue)" + audioPipelineDescription = source == .trueHDAtmos + ? "\(sourceCodecLabel) Atmos → APAC \(layout.rawValue)" + : "DTS:X → APAC \(layout.rawValue)" audioDelivery = .bridged + audioIsAPAC = true EngineLog.emit( - "[HLSVideoEngine] TrueHD Atmos: objects rendered into \(layout.rawValue), delivered as " - + "\(bridge.hlsCodecs) (lossy; the lossless 7.1 channel presentation is not used)", + "[HLSVideoEngine] \(source.name): " + + (source == .trueHDAtmos ? "objects" : "bed, heights and objects") + + " rendered into \(layout.rawValue), delivered as \(bridge.hlsCodecs) (lossy; the lossless " + + (source == .trueHDAtmos ? "7.1 channel presentation" : "7.1 downmix") + " is not used)", category: .session ) return producer diff --git a/Sources/AetherEngine/Video/HLSVideoEngine.swift b/Sources/AetherEngine/Video/HLSVideoEngine.swift index c00b0d179..286732b17 100644 --- a/Sources/AetherEngine/Video/HLSVideoEngine.swift +++ b/Sources/AetherEngine/Video/HLSVideoEngine.swift @@ -102,6 +102,49 @@ public final class HLSVideoEngine: @unchecked Sendable { } private var server: HLSLocalServer? var provider: VideoSegmentProvider? + let nativeLiveDVRPolicy = LiveDVRRetentionPolicy() // shared native retention contract; internal for integration witnesses + private let liveRetentionQueue = DispatchQueue(label: "com.aetherengine.live-retention", qos: .utility) + private var liveRetentionScheduled = false // restartLock; at most one pending I/O job + private var liveRetentionRevision: UInt64 = 0 // restartLock; do not lose an update during I/O + + var nativeLiveDVRWindow: LiveDVRRetentionPolicy.Snapshot? { nativeLiveDVRPolicy.snapshot } + var nativeLiveDVRMandatoryBytes: Int { subsystemSnapshot().cache?.nativeLiveMandatoryBytes ?? 0 } + + func setNativeLiveDVRLimits(_ limits: LiveDVRLimits, availableCapacityBytes: Int64?) -> Bool { + restartLock.lock() + let currentCache = cache + let currentProvider = provider + restartLock.unlock() + guard isLiveSession, let currentCache, currentProvider != nil else { return false } + nativeLiveDVRPolicy.update(limits, availableBytes: availableCapacityBytes, residentBytes: currentCache.totalBytes) + currentCache.startNativeLiveDVRExpiryChecks() + restartLock.lock() + liveRetentionRevision &+= 1 + let schedule = !liveRetentionScheduled + liveRetentionScheduled = true + restartLock.unlock() + if schedule { + liveRetentionQueue.async { [weak self] in + self?.drainNativeLiveRetentionUpdates() + } + } + return true + } + + private func drainNativeLiveRetentionUpdates() { + while true { + restartLock.lock() + let revision = liveRetentionRevision + let currentProvider = provider + restartLock.unlock() + currentProvider?.applyNativeLiveDVRRetention() + restartLock.lock() + let settled = liveRetentionRevision == revision + if settled { liveRetentionScheduled = false } + restartLock.unlock() + if settled { return } + } + } /// The 2026-09-02 field session retained 64 segments spanning more than four minutes. Cache /// mutations can arrive much faster than a host timeline needs to redraw, so fold them into at @@ -229,6 +272,8 @@ public final class HLSVideoEngine: @unchecked Sendable { public var initialStartSeconds: Double? /// Resolved in start() from `initialStartSeconds` once the segment plan exists. private(set) var initialProducerBaseIndex: Int = 0 + /// Set once the main demuxer sits at the initial producer's start (step 8's seek ran early). + var demuxerAtInitialProducerStart = false /// One cue store per declared text track (#55, all-tracks), ordinal-aligned with /// `nativeSubtitleLanguagesForSession`. Re-threaded onto every producer restart so @@ -487,6 +532,9 @@ public final class HLSVideoEngine: @unchecked Sendable { /// AE#270: source PTS the container's timeline starts at, clamped at 0. The published playhead folds /// it out so it stays on the same 0-based axis as `duration`. public private(set) var sourceStartSeconds: Double = 0 + /// Written during start(), consumed after that operation has joined. Does not poll the + /// mutable demuxer from the main actor while playback is reading or tearing down. + private(set) var openedSourceIsSeekable = false /// Result of the stream-copy / FLAC-bridge / video-only cascade. Possible values: /// `"Stream-copy (EAC3+JOC Atmos)"`, `"Stream-copy ()"`, `" → FLAC bridge"`. @@ -504,6 +552,10 @@ public final class HLSVideoEngine: @unchecked Sendable { /// off the HDMI route has to know that, or it reads the carrier as a downmix. public internal(set) var audioIsAtmosStreamCopy = false + /// The audio is TrueHD Atmos or DTS:X rendered to APAC (`objectAudioRendering`), which on tvOS needs + /// `AtmosOutputActivator` beside the player to reach the receiver as Atmos. + var audioIsAPAC = false + /// Producer's `videoShiftPts` in seconds, updated on every gate open. AVPlayer clock = /// `source_pts - playlistShiftSeconds`. Lock-guarded: written on pump thread, read on others. public var playlistShiftSeconds: Double { @@ -669,8 +721,16 @@ public final class HLSVideoEngine: @unchecked Sendable { /// Fires on live program-boundary rebase: `(newShiftSeconds, seamOutputSeconds)`. AetherEngine /// defers applying the shift until playback crosses `seamOutputSeconds` so the clock doesn't jump. var onPlaylistShiftRebased: (@Sendable (Double, Double) -> Void)? - /// Fires on `PumpExitReason.sourceReplay`; host must re-negotiate a fresh session. + /// Fires when a longer finalized segment requires a new live playlist URL. + var onLivePlaylistRenewal: (@Sendable () -> Void)? + func renewedLivePlaylistURL(replacing url: URL) -> URL? { + server?.renewedLivePlaylistURL(replacing: url) + } + /// Fires when no in-engine source reopen can continue the session. var onLiveSourceReset: (@Sendable () -> Void)? + var onLiveSourceReplayExhausted: (@Sendable () -> Void)? + /// A fresh source may change format; the owner ends the old recording before that seam. + var onLiveSourceReopening: (@Sendable () -> Void)? /// AE#627: the first join read video for the whole keyframe wait and found no point the native /// route can open a segment on. Reopening joins the same bitstream, so the engine decides between /// the software path and telling the host (`escalateLiveReopenExhaustion`) instead. Unset, the @@ -744,6 +804,10 @@ public final class HLSVideoEngine: @unchecked Sendable { /// what actually replaces the segments and the item holding them. public var audioDelaySeconds: Double = 0 + /// `LoadOptions.progressiveSegmentDelivery`, handed to the provider and to every producer this + /// session builds. Set before `start()`. + var servesSegmentsProgressively = false + /// Serializes restart requests among themselves. Held across waits (unlike `restartLock`); /// only other restarts contend on it. private let restartGate = NSLock() @@ -928,6 +992,9 @@ public final class HLSVideoEngine: @unchecked Sendable { isLiveSession: Bool = false, dvrWindowSeconds: Double? = nil, liveJoinProfile: LiveJoinProfile = .standard, + sourceOpenPolicy: SourceOpenPolicy = .init(), + liveStartupGraceSeconds: TimeInterval? = nil, + liveStartupSingleSegmentMinimumSeconds: TimeInterval? = nil, liveCutTargetSeconds: Double? = nil, blockingReloadOverride: Bool? = nil, liveCadenceObservation: (@Sendable () -> Double?)? = nil, @@ -961,6 +1028,7 @@ public final class HLSVideoEngine: @unchecked Sendable { probesize: probesize, maxAnalyzeDuration: maxAnalyzeDuration) .withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDurationSeconds) .withHeldSourceConnection(heldSourceConnection) + .withSourceOpenPolicy(sourceOpenPolicy) self.dvModeAvailable = dvModeAvailable self.displaySupportsHDR = displaySupportsHDR self.keepDvh1TagWithoutDV = keepDvh1TagWithoutDV @@ -976,6 +1044,8 @@ public final class HLSVideoEngine: @unchecked Sendable { self.isLiveSession = isLiveSession self.dvrWindowSeconds = dvrWindowSeconds self.liveJoinProfile = liveJoinProfile + self.liveStartupGraceSeconds = liveStartupGraceSeconds + self.liveStartupSingleSegmentMinimumSeconds = liveStartupSingleSegmentMinimumSeconds // An explicit cut target keeps precedence for direct callers. Otherwise resolve the profile. let resolvedLiveCutTarget = liveCutTargetSeconds ?? Self.liveCutTargetSeconds(for: liveJoinProfile) @@ -1038,6 +1108,8 @@ public final class HLSVideoEngine: @unchecked Sendable { /// Controls whether the first live manifest may take the bounded shallow-window path. private let liveJoinProfile: LiveJoinProfile + private let liveStartupGraceSeconds: TimeInterval? + private let liveStartupSingleSegmentMinimumSeconds: TimeInterval? /// Live segment cut target for this session, resolved from the host's `LiveJoinProfile` (AE#195). /// Drives the producer's keyframe cut, `LiveWindowSizing`, and (via the served TARGETDURATION floor) @@ -1079,7 +1151,7 @@ public final class HLSVideoEngine: @unchecked Sendable { /// EAC3 from MKV without dec3 extradata). let audioBridgeMode: AudioBridgeMode - /// TrueHD Atmos delivery (see `ObjectAudioRendering`); consulted before `audioBridgeMode`. + /// TrueHD Atmos and DTS:X delivery (#731, see `ObjectAudioRendering`); consulted before `audioBridgeMode`. let objectAudioRendering: ObjectAudioRendering /// Pre-opened demuxer reused by `start()` to skip `avformat_find_stream_info` (~1-3 s on slow CDN). @@ -1100,6 +1172,7 @@ public final class HLSVideoEngine: @unchecked Sendable { /// against the origin that punishes them, half way through and with nothing saying so. var restartReopenProfile: DemuxerOpenProfile { DemuxerOpenProfile.restartReopen + .withSourceOpenPolicy(openProfile.sourceOpenPolicy) .withSequentialOrigin(sequentialOrigin, declaredDuration: declaredDurationSeconds) .withHeldSourceConnection(heldSourceConnection) } @@ -1169,6 +1242,7 @@ public final class HLSVideoEngine: @unchecked Sendable { } } demuxer = dem + openedSourceIsSeekable = dem.isSourceSeekable dem.onNetworkPhaseChanged = onNetworkPhaseChanged // surface source stall/reconnect to playbackPhase (#85) dem.playIntentProvider = playIntentProvider // a held connection ends on a pause, not on a parked producer @@ -1488,6 +1562,7 @@ public final class HLSVideoEngine: @unchecked Sendable { if dem.isSourceSeekable { dem.seek(to: 0) } dem.endIndexPass() // AE#585: the next read that lands outside a span is playback's } + demuxerAtInitialProducerStart = false // volumeAvailableCapacityForImportantUsage is unavailable on tvOS; the plain capacity key // exists on every platform and is close enough for the quarter-of-free-space clamp. @@ -1510,6 +1585,7 @@ public final class HLSVideoEngine: @unchecked Sendable { let segmentCache = SegmentCache( forwardWindow: forwardWindowSegments, retentionBudgetBytes: retentionBudget, + nativeLiveDVRPolicy: isLiveSession ? nativeLiveDVRPolicy : nil, onResidentSetChanged: { [weak self] in self?.noteResidentSetChanged() } ) claim.track { [weak segmentCache] in segmentCache?.totalBytes ?? 0 } @@ -1799,7 +1875,11 @@ public final class HLSVideoEngine: @unchecked Sendable { + (Self.spatialRenderingLayout( rendering: objectAudioRendering, codecID: acpForHE.codec_id, profile: acpForHE.profile, sampleRate: acpForHE.sample_rate) - .map { "Atmos object render into \($0.rawValue), APAC" } + .map { layout in + Self.objectAudioSource(codecID: acpForHE.codec_id, profile: acpForHE.profile) == .trueHDAtmos + ? "Atmos object render into \(layout.rawValue), APAC" + : "DTS:X render into \(layout.rawValue) if LibDTSX confirms DTS:X, APAC" + } ?? Self.encoderLabel(AudioBridge.bridgeEncoder( for: audioBridgeMode, sourceChannels: acpForHE.ch_layout.nb_channels)).uppercased()) @@ -1924,6 +2004,7 @@ public final class HLSVideoEngine: @unchecked Sendable { streamCopyAudio: streamCopyAudio, sourceAudioStreamIndex: audioStreamIndex, sourceAudioStream: audioStreamIndex >= 0 ? audioDem.stream(at: audioStreamIndex) : nil, + audioDemuxer: audioDem, sourceCarriesAudio: audioDem.firstAudioStreamIndexByType >= 0, audioHLSCodecs: &audioHLSCodecs, audioLanguage: audioLanguage @@ -1934,6 +2015,18 @@ public final class HLSVideoEngine: @unchecked Sendable { // video-only must not advertise an audio rendition that is not in the segments, and must not // force the master for one either. let servedAudioLanguage = savedAudioConfig != nil ? audioLanguage : nil + // Same gate, for the rendition's CHANNELS: read the count off the config the MUXER got, so a + // bridged track reports the encoder's layout rather than the source's. `audioIsAtmosStreamCopy` + // is latched from the source probe (profile 30 = JOC) before the cascade runs, so it is still + // true on a source whose stream-copy was rejected and bridged to FLAC; objects do not survive + // that, hence the `.streamCopy` conjunct. Without it a downgraded session would advertise + // `CHANNELS="16/JOC"` over a FLAC bed, which is worse than saying nothing. + // #731: the APAC bed is muxed behind a 2-channel ALAC stand-in, so its bridge states the count. + let servedAudioChannels: Int? = savedAudioConfig.map { + $0.bridge?.servedChannelCount ?? Int($0.codecpar.pointee.ch_layout.nb_channels) + } + let servedAudioIsAtmosStreamCopy = + audioIsAtmosStreamCopy && audioDelivery == .streamCopy && savedAudioConfig != nil // 7. Wire provider, server, and URL. let manifestCodecs = audioHLSCodecs.map { "\(primaryCodecs),\($0)" } ?? primaryCodecs @@ -1962,7 +2055,10 @@ public final class HLSVideoEngine: @unchecked Sendable { hdcpLevel: hdcpLevel, sourceBitrate: sourceBitrate, audioLanguage: servedAudioLanguage, + audioChannelCount: servedAudioChannels, + audioIsAtmosStreamCopy: servedAudioIsAtmosStreamCopy, isLive: isLiveSession, + servesSegmentsProgressively: servesSegmentsProgressively, // Sequential archives: playlist grows with the producer's REAL cut durations. The // static plan's uniform EXTINF lies whenever the archive's GOP cadence does not // divide the cut target (1.92 s GOPs vs a 4.0 s plan put every segment's media up @@ -1976,7 +2072,10 @@ public final class HLSVideoEngine: @unchecked Sendable { // resident cap it can never pass. retentionBudgetBytes: retentionBudgetBytes ), + nativeLiveDVRPolicy: isLiveSession ? nativeLiveDVRPolicy : nil, allowsBoundedDegradedStart: liveJoinProfile == .fastZap, + startupGraceSeconds: liveStartupGraceSeconds, + singleSegmentStartupMinimumSeconds: liveStartupSingleSegmentMinimumSeconds, boundedStartFloorsAtHoldback: LiveEdgePolicy.boundedStartFloorArmed, firstServeLatchCoversEngineCut: LiveEdgePolicy.firstServeLatchAllArmed, blockingReloadOverride: blockingReloadOverride, @@ -2036,13 +2135,10 @@ public final class HLSVideoEngine: @unchecked Sendable { // 8. Kick the pump. Seek on the video stream's exact plan timestamp and forbid an earlier // landing. A global time seek can choose the previous sync point in a multi-stream MP4, // leaving the producer to scan a whole GOP over the origin before writing anything (#191). - if initialProducerBaseIndex > 0, initialProducerBaseIndex < plan.count { - let targetPts = plan[initialProducerBaseIndex].startPts - // Disc plans use folded multi-clip timestamps that are not valid raw seek targets. - if dem.isDiscSource || !dem.seek(to: targetPts, streamIndex: videoStreamIndex) { - let tb = savedVideoConfig?.timeBase ?? AVRational(num: 1, den: 1000) - dem.seek(to: Double(targetPts) * Double(tb.num) / Double(tb.den)) - } + // The DTS:X verdict may already have put the cursor there and peeked from it (#744); a + // second seek would drop those packets and read the same bytes again. + if !demuxerAtInitialProducerStart { + seekToInitialProducerStart(dem) } // #416: the pump harvests every subtitle packet it demuxes, so where it OPENS is where its // coverage of the source begins. The subtitle drain reads "nothing between this set and the @@ -2100,7 +2196,7 @@ public final class HLSVideoEngine: @unchecked Sendable { builtInPanelEngagesOnDemand: Self.builtInPanelEngagesOnDemand, frameRateKnown: frameRate != nil, videoCodecNeedsMasterSignaling: videoCodecNeedsMasterSignaling, - hasAudioRendition: servedAudioLanguage != nil, + hasAudioRendition: servedAudioLanguage != nil || servedAudioIsAtmosStreamCopy, hasIFrameRendition: iFrameCandidate == .served) let resolvedURL: URL? = useMasterPlaylist ? srv.playlistURL @@ -2526,6 +2622,10 @@ public final class HLSVideoEngine: @unchecked Sendable { /// place, so a mapping stays valid for as long as the reader holds it. struct ScrubThumbnailSource: Sendable { let segmentIndex: Int + let startSeconds: Double + let durationSeconds: Double + let carriedOffset: Double? + let identity: String let initData: Data let segmentURL: URL @@ -2542,7 +2642,20 @@ public final class HLSVideoEngine: @unchecked Sendable { guard let prov else { return nil } guard let seg = prov.thumbnailSegment(atSeconds: seconds), let initData = prov.peekInitSegment() else { return nil } - return ScrubThumbnailSource(segmentIndex: seg.index, initData: initData, segmentURL: seg.fileURL) + anchorShiftLock.lock() + let carried = isLiveSession ? 0 : epochAxisByIndex.carried(at: seg.index) + anchorShiftLock.unlock() + // The cache replaces/unlinks immutable files. An index alone cannot + // identify bytes after a same-session re-cut/restart rewrites that index. + guard let attributes = try? FileManager.default.attributesOfItem(atPath: seg.fileURL.path), + let volume = attributes[.systemNumber] as? NSNumber, + let inode = attributes[.systemFileNumber] as? NSNumber, + let size = attributes[.size] as? NSNumber, + let modified = attributes[.modificationDate] as? Date else { return nil } + let identity = "\(volume.uint64Value):\(inode.uint64Value):\(size.uint64Value):\(modified.timeIntervalSince1970):" + initData.base64EncodedString() + return ScrubThumbnailSource(segmentIndex: seg.index, startSeconds: seg.startSeconds, durationSeconds: seg.durationSeconds, + carriedOffset: carried, identity: identity, + initData: initData, segmentURL: seg.fileURL) } public func stop() { @@ -2561,6 +2674,7 @@ public final class HLSVideoEngine: @unchecked Sendable { retentionClaim = nil let p = producer producer = nil + liveRecoveryProducer = nil let s = server server = nil let c = cache @@ -2614,7 +2728,7 @@ public final class HLSVideoEngine: @unchecked Sendable { // Detached cleanup: producer waitForFinish must precede demuxer/cache/server close // (pump accesses them during unwind). ownedParams released last (pump read them). - Task.detached { + BlockingWork.detached { iFrames?.shutdown() _ = p?.waitForFinish(timeout: 3.0) s?.stop() @@ -2815,6 +2929,7 @@ public final class HLSVideoEngine: @unchecked Sendable { // AE#464: read here rather than pushed, so every producer this session builds (seek // restart, live reopen, #99 revive) cuts with the offset currently in force. audioDelaySeconds: audioDelaySeconds, + servesSegmentsProgressively: servesSegmentsProgressively, epoch: producerEpoch ) // #240: threaded onto every producer (initial + restart), like the wedge-detector providers @@ -2882,6 +2997,7 @@ public final class HLSVideoEngine: @unchecked Sendable { /// cuts segments the playlist never lists (audit HLS-101). func wireProviderCallbacks(_ prod: HLSSegmentProducer, to prov: VideoSegmentProvider) { if isLiveSession { + prov.onLivePlaylistRenewal = { [weak self] in self?.onLivePlaylistRenewal?() } prod.onLiveSegmentFinalized = { [weak prov] index, durationSeconds, startPtsSeconds, discontinuous in prov?.appendLiveSegment(index: index, startSeconds: startPtsSeconds, @@ -2911,6 +3027,9 @@ public final class HLSVideoEngine: @unchecked Sendable { /// Barren-cycle backstop: an open-then-starve source would cycle forever without this. /// After `maxBarrenReopenCycles` consecutive cycles producing no new segment, stop reviving. var barrenReopenCycles = 0 + var liveRecoveryHasVerifiedReplay = false + var liveSourceRequiresNegotiation = false + var liveRecoveryProducer: HLSSegmentProducer? var lastReopenSegmentCount = -1 static let maxBarrenReopenCycles = 3 /// Live muxerFailed in-place rebuilds, bounded by progress like the reopen cycles above: new segments @@ -4346,3 +4465,20 @@ public final class HLSVideoEngine: @unchecked Sendable { } } + +extension HLSVideoEngine { + /// Puts the demuxer where the first producer starts: no-op at segment 0. Seeks on the video + /// stream's exact plan timestamp and forbids an earlier landing. A global time seek can choose + /// the previous sync point in a multi-stream MP4, leaving the producer to scan a whole GOP over + /// the origin before writing anything (#191). + func seekToInitialProducerStart(_ dem: Demuxer) { + let plan = segmentPlan + guard initialProducerBaseIndex > 0, initialProducerBaseIndex < plan.count else { return } + let targetPts = plan[initialProducerBaseIndex].startPts + // Disc plans use folded multi-clip timestamps that are not valid raw seek targets. + if dem.isDiscSource || !dem.seek(to: targetPts, streamIndex: videoStreamIndex) { + let tb = savedVideoConfig?.timeBase ?? AVRational(num: 1, den: 1000) + dem.seek(to: Double(targetPts) * Double(tb.num) / Double(tb.den)) + } + } +} diff --git a/Sources/AetherEngine/Video/LiveDVRLimits.swift b/Sources/AetherEngine/Video/LiveDVRLimits.swift new file mode 100644 index 000000000..ac0dd43fc --- /dev/null +++ b/Sources/AetherEngine/Video/LiveDVRLimits.swift @@ -0,0 +1,67 @@ +import Foundation + +/// Caller-selected retention limits for native loopback and opted-in software live DVR. +/// This is a retention allowance, not a synchronous quota for muxer staging or recordings. +public struct LiveDVRLimits: Equatable, Sendable { + public let windowSeconds: Double? + public let maximumBytes: Int64 + public let minimumFreeBytes: Int64 + /// Monotonic uptime deadline of the caller's capacity sample, on the systemUptime clock. + /// Missing, nonfinite or expired deadlines authorize no optional history. + public let capacityValidUntil: Double? + + public init(windowSeconds: Double?, maximumBytes: Int64, minimumFreeBytes: Int64, + capacityValidUntil: Double? = nil) { + self.windowSeconds = windowSeconds.flatMap { $0.isFinite && $0 > 0 ? $0 : nil } + self.maximumBytes = max(0, maximumBytes) + self.minimumFreeBytes = max(0, minimumFreeBytes) + self.capacityValidUntil = capacityValidUntil + } + + /// Existing resident payload is reclaimable capacity; never count it twice against free space. + func retentionBytes(availableBytes: Int64?, residentBytes: Int) -> Int { + guard windowSeconds != nil, let availableBytes, availableBytes >= minimumFreeBytes else { return 0 } + let freeHeadroom = min(maximumBytes, availableBytes - minimumFreeBytes) + let reclaimable = min(maximumBytes - freeHeadroom, Int64(max(0, residentBytes))) + // Preserve the existing quarter-volume allowance. Add only bounded reclaimable payload, + // rather than a shrinking free-only cap that would evict its own cache repeatedly. + let quarterAllowance = min(maximumBytes, availableBytes / 4 + min(maximumBytes, Int64(max(0, residentBytes))) / 4) + return Int(min(freeHeadroom + reclaimable, quarterAllowance)) + } +} + +/// One leaf lock shared by playlist sizing, the producer's cap and finalized-segment retention. +/// Caller must renew with a newly sampled capacity. An expired/missing lease keeps only playback +/// cushions, disables seek, and cannot authorize optional history or an expanded software spool. +final class LiveDVRRetentionPolicy: @unchecked Sendable { + struct Snapshot { + let windowSeconds: Double? + let retentionBytes: Int + } + private let lock = NSLock() + private var value: Snapshot? + private var validUntil: Double = 0 + private let now: @Sendable () -> Double + + init(now: @escaping @Sendable () -> Double = { ProcessInfo.processInfo.systemUptime }) { + self.now = now + } + func update(_ limits: LiveDVRLimits, availableBytes: Int64?, residentBytes: Int) { + let bytes = limits.retentionBytes(availableBytes: availableBytes, residentBytes: residentBytes) + let instant = now() + lock.lock() + value = Snapshot(windowSeconds: bytes > 0 ? limits.windowSeconds : nil, retentionBytes: bytes) + validUntil = limits.capacityValidUntil.flatMap { $0.isFinite && instant.isFinite ? $0 : nil } + ?? -.infinity + lock.unlock() + } + var snapshot: Snapshot? { + let instant = now() + lock.lock(); defer { lock.unlock() } + guard let value else { return nil } // unconfigured behavior stays unchanged + guard instant.isFinite, instant <= validUntil else { + return Snapshot(windowSeconds: nil, retentionBytes: 0) + } + return value + } +} diff --git a/Sources/AetherEngine/Video/LivePacketReplayGuard.swift b/Sources/AetherEngine/Video/LivePacketReplayGuard.swift new file mode 100644 index 000000000..e38a73bc2 --- /dev/null +++ b/Sources/AetherEngine/Video/LivePacketReplayGuard.swift @@ -0,0 +1,442 @@ +import CryptoKit +import Foundation + +/// Conservatively removes packets that a live origin sends a second time after reconnecting. +/// Source timestamps alone are not evidence of a replay: an encoder can reset its clock while +/// continuing with new pictures. Matching source timestamps AND compressed payloads establish +/// the overlap; short damaged runs inside that interval stay quarantined until it completes. +/// +/// The guard is pump-thread-only. Its history is bounded in both source time and packet count; +/// it stores digests, never video or audio payloads. An ambiguous mismatch is forwarded; an +/// interrupted overlap already confirmed on both tracks requires a fresh source instead. +/// Short damaged runs are quarantined until later exact matches establish the same interval. +struct LivePacketReplayGuard { + static let maximumPendingBytes = 96 * 1_024 * 1_024 + static let maximumPendingPackets = 10_000 + + enum Stream: Hashable { case video, audio } + + struct Signature: Hashable { + let stream: Stream + let dts: Int64 + let pts: Int64 + let digest: SHA256.Digest + + init(stream: Stream, dts: Int64, pts: Int64, payload: Data) { + self.init(stream: stream, dts: dts, pts: pts, digest: SHA256.hash(data: payload)) + } + + /// Hashes the packet's own buffer: every live packet passes through here, so no copy. + init(stream: Stream, dts: Int64, pts: Int64, payload: UnsafeRawBufferPointer) { + self.init(stream: stream, dts: dts, pts: pts, digest: SHA256.hash(data: payload)) + } + + private init(stream: Stream, dts: Int64, pts: Int64, digest: SHA256.Digest) { + self.stream = stream + self.dts = dts + self.pts = pts + self.digest = digest + } + } + + enum Event: Equatable { + case began + case quarantined + case damagedBoundaryHeld + case damagedBoundaryForwarded + case finished(videoPackets: Int, audioPackets: Int, videoSeconds: Double) + case mismatch(videoPackets: Int, audioPackets: Int) + case interrupted(videoPackets: Int, audioPackets: Int) + } + + struct Decision { + let drop: Bool + let event: Event? + var holdDamagedBoundary = false + } + + private struct Entry { + let signature: Signature + let sourceSeconds: Double + } + + private struct Overlap { + let videoFrontier: Int64 + let admittedVideoFrontier: Int64 + let audioFrontier: Int64 + let requiresAudioMatch: Bool + var videoFinished = false + var audioFinished = false + var videoPackets = 0 + var audioPackets = 0 + var firstVideoSeconds: Double? + var lastVideoSeconds: Double? + var firstAudioSeconds: Double? + var lastAudioSeconds: Double? + var unmatchedVideo = 0 + var unmatchedAudio = 0 + var firstUnmatchedVideoSeconds: Double? + var firstUnmatchedAudioSeconds: Double? + var containsUnmatchedPackets = false + var pendingVideoSignatures: Set = [] + } + + private struct DamagedBoundary { + let sourceSeconds: Double + let dts: Int64 + let maximumSeconds: Double + var packets = 1 + var intactVideo: [Signature] = [] + } + + private static let historySeconds = 45.0 + private static let maximumEntries = 10_000 + private static let backwardTriggerSeconds = HLSSegmentProducer.discontinuityBackwardThresholdSeconds + // A reconnect can truncate a PES packet. Do not mistake one damaged packet for a new + // programme, but never scan an unbounded run of different pictures on timestamp alone. + private static let maximumUnmatchedSeconds = 0.5 + private static let maximumUnmatchedPackets = 64 + + private var entries: [Entry] = [] + private var firstEntry = 0 + private var signatureCounts: [Signature: Int] = [:] + private var overlap: Overlap? + private var damagedBoundary: DamagedBoundary? + private var videoCadence = VideoPacketProgress() + private var isSourceContinuation = false + private var replayTailVideoFrontier: Int64? + private var replayTailAudioFrontier: Int64? + + var isDroppingReplay: Bool { overlap != nil } + var isHoldingDamagedBoundary: Bool { damagedBoundary != nil } + var historyEntryCount: Int { entries.count - firstEntry } + + /// Untimed corrupt packets provide no proof. A completed scan containing one must + /// still establish distinct exact matches on every participating track. + mutating func noteDamagedPacket() { + overlap?.containsUnmatchedPackets = true + } + + /// One common packet is not proof: each participating track must span the rollback trigger. + /// Full overlap still completes in place; this evidence only prevents an interrupted scan + /// from replaying its verified prefix through the ordinary discontinuity path. + var confirmedPrefix: (videoPackets: Int, audioPackets: Int, + videoSeconds: Double, audioSeconds: Double)? { + guard let current = overlap else { return nil } + let videoSeconds = (current.lastVideoSeconds ?? 0) - (current.firstVideoSeconds ?? 0) + let audioSeconds = (current.lastAudioSeconds ?? 0) - (current.firstAudioSeconds ?? 0) + if isSourceContinuation { + // A fresh producer can join less than the usual rollback threshold behind + // cached media. Two exact packets on every participating track prove that prefix. + guard current.videoPackets >= 2, + !current.requiresAudioMatch || current.audioPackets >= 2 else { return nil } + } else { + guard videoSeconds >= Self.backwardTriggerSeconds, + !current.requiresAudioMatch || audioSeconds >= Self.backwardTriggerSeconds else { return nil } + } + return (current.videoPackets, current.audioPackets, videoSeconds, audioSeconds) + } + + /// Only for a fresh producer continuing the SAME retained cache, never a seek or new load. + func sourceContinuation() -> Self { + var result = self + result.overlap = nil + result.damagedBoundary = nil + result.isSourceContinuation = true + result.replayTailVideoFrontier = nil + result.replayTailAudioFrontier = nil + return result + } + + mutating func reset() { + entries.removeAll(keepingCapacity: true) + firstEntry = 0 + signatureCounts.removeAll(keepingCapacity: true) + overlap = nil + damagedBoundary = nil + videoCadence = VideoPacketProgress() + isSourceContinuation = false + replayTailVideoFrontier = nil + replayTailAudioFrontier = nil + } + + /// An unverified boundary has no authority to erase admitted source history. + mutating func releaseDamagedBoundary() { damagedBoundary = nil } + + mutating func record(_ signature: Signature, sourceSeconds: Double) { + guard sourceSeconds.isFinite else { return } + if signature.stream == .video { _ = videoCadence.observe(sourceSeconds) } + entries.append(Entry(signature: signature, sourceSeconds: sourceSeconds)) + signatureCounts[signature, default: 0] += 1 + // Freeze time pruning during a confirmed overlap: the fresh audio/video stream may cross + // the old frontier at different times, but both still need the same old packet history. + let cutoff = overlap == nil ? sourceSeconds - Self.historySeconds : -.infinity + while firstEntry < entries.count, + (entries[firstEntry].sourceSeconds < cutoff + || entries.count - firstEntry > Self.maximumEntries) { + let expired = entries[firstEntry].signature + if signatureCounts[expired] == 1 { + signatureCounts.removeValue(forKey: expired) + } else { + signatureCounts[expired, default: 0] -= 1 + } + firstEntry += 1 + } + if firstEntry > 1_024 { + entries.removeFirst(firstEntry) + firstEntry = 0 + } + } + + mutating func inspect(_ signature: Signature, sourceSeconds: Double, timeBaseSeconds: Double, + videoFrontier: Int64, audioFrontier: Int64, + hasAudio: Bool = false, isCorrupt: Bool = false) -> Decision { + guard sourceSeconds.isFinite, timeBaseSeconds > 0, signature.dts != Int64.min else { + return Decision(drop: false, event: nil) + } + + if overlap == nil { + let frontier = signature.stream == .video ? videoFrontier : audioFrontier + // A demuxer can release one last duplicate PES after both tracks crossed the + // overlap. Keep exact-match protection through a short per-track settling tail. + let tail = signature.stream == .video ? replayTailVideoFrontier : replayTailAudioFrontier + if let tail { + if (Double(signature.dts) - Double(tail)) * timeBaseSeconds > Self.backwardTriggerSeconds { + if signature.stream == .video { replayTailVideoFrontier = nil } + else { replayTailAudioFrontier = nil } + } else if signature.dts <= frontier, signatureCounts[signature] != nil { + return Decision(drop: true, event: nil) + } + } + guard frontier != Int64.min, + (Double(frontier) - Double(signature.dts)) * timeBaseSeconds + >= (isSourceContinuation ? 0 : Self.backwardTriggerSeconds), + signatureCounts[signature] != nil || entries[firstEntry...].contains(where: { + $0.signature.stream == signature.stream && $0.signature.dts == signature.dts + && $0.signature.pts == signature.pts + }) else { + if var boundary = damagedBoundary { + let holdVideo = signature.stream == .video && (isCorrupt || signature.dts >= boundary.dts) + if holdVideo { boundary.packets += 1 } + if holdVideo && !isCorrupt { boundary.intactVideo.append(signature) } + // Demux interleaving may release an earlier intact picture AFTER the + // damaged one. Admit that picture/audio now; only hold the video boundary. + // A clean outgoing straggler is not proof of fresh source progression. + // Cover two frame intervals on sparse video without an unbounded scan. + if (signature.stream == .video + && sourceSeconds - boundary.sourceSeconds > boundary.maximumSeconds + timeBaseSeconds) + || boundary.packets >= Self.maximumUnmatchedPackets { + damagedBoundary = nil + return Decision(drop: false, event: .damagedBoundaryForwarded) + } + damagedBoundary = boundary + return Decision(drop: false, event: nil, holdDamagedBoundary: holdVideo) + } else if isCorrupt, signature.stream == .video, + videoFrontier != Int64.min, historyEntryCount > 0 { + // The old connection's last partial PES can precede timestamp rollback. + // Do not publish it or record it as the frontier before the next picture + // can establish replay and supply the intact frame at the same timestamp. + damagedBoundary = DamagedBoundary(sourceSeconds: sourceSeconds, dts: signature.dts, + maximumSeconds: Swift.max(Self.maximumUnmatchedSeconds, 2 * (videoCadence.cadence ?? 0))) + return Decision(drop: false, event: .damagedBoundaryHeld, holdDamagedBoundary: true) + } + return Decision(drop: false, event: nil) + } + let pendingVideo = damagedBoundary?.intactVideo ?? [] + let hadDamagedBoundary = damagedBoundary != nil + damagedBoundary = nil + let requiresAudioMatch = hasAudio || audioFrontier != Int64.min + // Held intact outgoing pictures define the same-source horizon, but are + // provisional identity only: record them as admitted history at commit. + let retainedVideoFrontier = Swift.max(videoFrontier, pendingVideo.map(\.dts).max() ?? videoFrontier) + overlap = Overlap(videoFrontier: retainedVideoFrontier, + admittedVideoFrontier: videoFrontier, audioFrontier: audioFrontier, + requiresAudioMatch: requiresAudioMatch, + videoFinished: false, audioFinished: !requiresAudioMatch, + pendingVideoSignatures: Set(pendingVideo)) + overlap?.containsUnmatchedPackets = hadDamagedBoundary + if signatureCounts[signature] != nil { + return dropMatched(signature, sourceSeconds: sourceSeconds, event: .began) + } + // The very first returning packet can itself be damaged. Matching timestamps + // only open a bounded quarantine; later exact evidence must prove the replay. + } + + var current = overlap! + let frontier = signature.stream == .video ? current.videoFrontier : current.audioFrontier + if signature.stream == .audio, current.requiresAudioMatch, frontier == Int64.min { + // A configured track not admitted yet is not an absent track or replay evidence. + overlap = nil + return Decision(drop: false, event: .mismatch( + videoPackets: current.videoPackets, audioPackets: current.audioPackets)) + } + if signature.stream == .video, signature.dts > current.admittedVideoFrontier, + signature.dts <= current.videoFrontier, !current.pendingVideoSignatures.contains(signature) { + // The intact replacement for the damaged picture was never admitted. + // Retain it while verifying through the later queued outgoing pictures. + current.videoFinished = false + overlap = current + return Decision(drop: false, event: nil) + } + if frontier != Int64.min, signature.dts <= frontier { + guard signatureCounts[signature] != nil || current.pendingVideoSignatures.contains(signature) else { + let lastMatch = signature.stream == .video ? current.lastVideoSeconds : current.lastAudioSeconds + let unmatched = signature.stream == .video ? current.unmatchedVideo : current.unmatchedAudio + // A damaged first PES can precede this track's first exact match. Its own + // bounded interval is provisional; completion still needs BOTH tracks' proof. + let firstUnmatched = signature.stream == .video + ? current.firstUnmatchedVideoSeconds : current.firstUnmatchedAudioSeconds + let anchor = lastMatch ?? firstUnmatched ?? sourceSeconds + if sourceSeconds >= anchor, + sourceSeconds - anchor <= Self.maximumUnmatchedSeconds, + unmatched < Self.maximumUnmatchedPackets { + if signature.stream == .video { + current.unmatchedVideo += 1 + if current.firstUnmatchedVideoSeconds == nil { current.firstUnmatchedVideoSeconds = sourceSeconds } + } else { + current.unmatchedAudio += 1 + if current.firstUnmatchedAudioSeconds == nil { current.firstUnmatchedAudioSeconds = sourceSeconds } + } + let firstGap = !current.containsUnmatchedPackets + current.containsUnmatchedPackets = true + overlap = current + // This is only a provisional discard: the producer buffers it until BOTH + // tracks reach their retained frontier with sufficient exact evidence. + return Decision(drop: true, event: firstGap ? .quarantined : nil) + } + if confirmedPrefix != nil { + return Decision(drop: false, event: .interrupted( + videoPackets: current.videoPackets, audioPackets: current.audioPackets)) + } + overlap = nil + return Decision(drop: false, + event: .mismatch(videoPackets: current.videoPackets, + audioPackets: current.audioPackets)) + } + return dropMatched(signature, sourceSeconds: sourceSeconds, event: nil) + } + + // The outgoing PES parser can release a later intact picture after audio has + // already rolled back. That straggler does not prove video traversed its replay. + if signature.stream == .video { current.videoFinished = current.videoPackets > 0 } + else { current.audioFinished = true } + if current.videoFinished && current.audioFinished { + if current.containsUnmatchedPackets, + ((current.lastVideoSeconds ?? 0) <= (current.firstVideoSeconds ?? 0) + || (current.requiresAudioMatch + && (current.lastAudioSeconds ?? 0) <= (current.firstAudioSeconds ?? 0))) { + overlap = nil + return Decision(drop: false, event: .mismatch( + videoPackets: current.videoPackets, audioPackets: current.audioPackets)) + } + replayTailVideoFrontier = current.videoFrontier + replayTailAudioFrontier = current.requiresAudioMatch ? current.audioFrontier : nil + overlap = nil + isSourceContinuation = false + return Decision(drop: false, event: .finished( + videoPackets: current.videoPackets, audioPackets: current.audioPackets, + videoSeconds: max(0, (current.lastVideoSeconds ?? 0) - (current.firstVideoSeconds ?? 0)))) + } + overlap = current + return Decision(drop: false, event: nil) + } + + private mutating func dropMatched(_ signature: Signature, sourceSeconds: Double, + event: Event?) -> Decision { + var current = overlap! + if signature.stream == .video { + current.videoFinished = false + current.unmatchedVideo = 0 + current.firstUnmatchedVideoSeconds = nil + current.videoPackets += 1 + if current.firstVideoSeconds == nil { current.firstVideoSeconds = sourceSeconds } + current.lastVideoSeconds = max(current.lastVideoSeconds ?? sourceSeconds, sourceSeconds) + } else { + current.audioFinished = false + current.unmatchedAudio = 0 + current.firstUnmatchedAudioSeconds = nil + current.audioPackets += 1 + if current.firstAudioSeconds == nil { current.firstAudioSeconds = sourceSeconds } + current.lastAudioSeconds = max(current.lastAudioSeconds ?? sourceSeconds, sourceSeconds) + } + overlap = current + return Decision(drop: true, event: event) + } + + /// Good stragglers retained alongside the damaged boundary are already scheduled + /// once. Keep exact-match protection through THEIR frontier, not only the old one. + mutating func retainForwardedReplayPacket(_ signature: Signature) { + if signature.stream == .video, let tail = replayTailVideoFrontier { + replayTailVideoFrontier = Swift.max(tail, signature.dts) + } else if signature.stream == .audio, let tail = replayTailAudioFrontier { + replayTailAudioFrontier = Swift.max(tail, signature.dts) + } + } + + private struct PictureTime: Hashable { let dts: Int64; let pts: Int64 } + + struct VideoBoundarySummary { + let damaged: Int + let replaced: Int + let unreplaced: Int + let retained: Int + let keyframes: Int + let superseded: Int + } + + /// Numeric seam evidence, without source URLs or packet payloads. A flagged outgoing + /// picture is repaired only by an admitted intact picture at BOTH original timestamps. + static func videoBoundarySummary(_ packets: [(signature: Signature?, corrupt: Bool, + duplicate: Bool, keyframe: Bool)]) -> VideoBoundarySummary { + var damaged: Set = [], intact: Set = [] + var copies: [PictureTime: Signature] = [:] + var superseded = 0 + var keyframes: [PictureTime: Bool] = [:] + for packet in packets { + guard !packet.duplicate, let signature = packet.signature, signature.stream == .video else { continue } + let picture = PictureTime(dts: signature.dts, pts: signature.pts) + if packet.corrupt { damaged.insert(picture) } + else { + if let previous = copies[picture], previous != signature { superseded += 1 } + copies[picture] = signature + intact.insert(picture) + keyframes[picture] = packet.keyframe + } + } + let replaced = damaged.intersection(intact).count + return VideoBoundarySummary(damaged: damaged.count, replaced: replaced, + unreplaced: damaged.count - replaced, retained: intact.count, keyframes: keyframes.values.filter { $0 }.count, superseded: superseded) + } + + /// Verified replay can interleave an outgoing good picture with its returning copy. + /// Preserve audio ordering, prefer the returning copy of a video picture, and restore decode order. + static func verifiedPacketOrder(_ signatures: [Signature?]) -> [Int] { + // A truncated PES can lose its CORRUPT flag when the TS parser assembles its + // last access unit. Once BOTH tracks prove replay, the returning picture at + // the same DTS/PTS supersedes that provisional outgoing copy. Publishing both + // and bumping the second DTS poisons Apple's reference chain until the next IDR. + // This is deliberately confined to a verified pending batch, never source history. + var video: [PictureTime: Int] = [:] + for index in signatures.indices { + guard let signature = signatures[index], signature.stream == .video else { continue } + let time = PictureTime(dts: signature.dts, pts: signature.pts) + if let previous = video[time], signatures[previous] == signature { continue } + video[time] = index + } + var seen: Set = [] + var indices = signatures.indices.filter { index in + guard let signature = signatures[index] else { return true } + if signature.stream == .video { + return video[PictureTime(dts: signature.dts, pts: signature.pts)] == index + } + return seen.insert(signature).inserted + } + let locations = indices.indices.filter { signatures[indices[$0]]?.stream == .video } + let sortedVideo = locations.map { indices[$0] }.sorted { a, b in + let left = signatures[a]!.dts, right = signatures[b]!.dts + return left == right ? a < b : left < right + } + for (location, index) in zip(locations, sortedVideo) { indices[location] = index } + return indices + } +} diff --git a/Sources/AetherEngine/Video/LiveReplayPacketReader.swift b/Sources/AetherEngine/Video/LiveReplayPacketReader.swift new file mode 100644 index 000000000..40428c830 --- /dev/null +++ b/Sources/AetherEngine/Video/LiveReplayPacketReader.swift @@ -0,0 +1,191 @@ +import Foundation +import AetherLibavformat +import AetherLibavcodec +import AetherLibavutil + +/// Demux-thread-only admission before software clock folding, recording, and DVR storage. +/// Owns quarantined packets; the caller owns each returned packet. +final class LiveReplayPacketReader { + enum Failure: LocalizedError { + case interruptedReplay + var errorDescription: String? { "Live source ended or diverged during verified replay." } + } + private struct Pending { + let packet: UnsafeMutablePointer + let signature: LivePacketReplayGuard.Signature? + let seconds: Double + let duplicate: Bool + var untimedBoundaryVideo = false + } + private var guardState = LivePacketReplayGuard() + private var pending: [Pending] = [] + private var ready: [Pending] = [] + private var readyIndex = 0 + private var pendingBytes = 0 + private var deferredError: Error? + private var videoFrontier = Int64.min + private var audioFrontier = Int64.min + private let videoIndex: Int32 + private let audioIndex: Int32 + private let videoTimeBase: Double + private let audioTimeBase: Double + private var videoProgress = VideoPacketProgress() + + init(videoIndex: Int32, audioIndex: Int32, videoTimeBase: Double, audioTimeBase: Double) { + self.videoIndex = videoIndex + self.audioIndex = audioIndex + self.videoTimeBase = videoTimeBase + self.audioTimeBase = audioTimeBase + } + + deinit { free(pending); free(Array(ready.dropFirst(readyIndex))) } + + private func free(_ packets: [Pending]) { + for entry in packets { + var packet: UnsafeMutablePointer? = entry.packet + av_packet_free(&packet) + } + } + + /// Only explicit positioning invalidates source history. Transport reconnects retain it. + func reset() { + free(pending); free(Array(ready.dropFirst(readyIndex))) + pending.removeAll(); ready.removeAll(); readyIndex = 0; pendingBytes = 0 + deferredError = nil + videoFrontier = Int64.min; audioFrontier = Int64.min + guardState.reset() + videoProgress = VideoPacketProgress() + } + + private func finish(verified: Bool, preserveHistory: Bool = false) throws { + let preserveHistory = preserveHistory || guardState.isHoldingDamagedBoundary + if !verified, guardState.confirmedPrefix != nil { + free(pending); pending.removeAll(); pendingBytes = 0 + throw Failure.interruptedReplay + } + if verified { + let boundary = LivePacketReplayGuard.videoBoundarySummary(pending.map { + (signature: $0.signature, corrupt: ($0.packet.pointee.flags & AV_PKT_FLAG_CORRUPT) != 0, + duplicate: $0.duplicate, keyframe: ($0.packet.pointee.flags & AV_PKT_FLAG_KEY) != 0) + }) + EngineLog.emit("[ReplayVideoBoundary] route=software damaged=\(boundary.damaged) replaced=\(boundary.replaced) unreplaced=\(boundary.unreplaced) retained=\(boundary.retained) keyframes=\(boundary.keyframes) superseded=\(boundary.superseded) untimed=\(pending.filter { $0.untimedBoundaryVideo }.count)", category: .swPlayback) + } + for entry in pending { + let corrupt = (entry.packet.pointee.flags & AV_PKT_FLAG_CORRUPT) != 0 + if verified && (entry.duplicate || corrupt || entry.untimedBoundaryVideo) { free([entry]) } + else { ready.append(entry) } + } + if verified { + let order = LivePacketReplayGuard.verifiedPacketOrder(ready.map(\.signature)) + let kept = Set(order) + for index in ready.indices where !kept.contains(index) { free([ready[index]]) } + ready = order.map { ready[$0] } + for entry in ready { + if let signature = entry.signature { guardState.retainForwardedReplayPacket(signature) } + } + } + pending.removeAll(keepingCapacity: true); pendingBytes = 0 + if !verified { + if preserveHistory { + guardState.releaseDamagedBoundary() + EngineLog.emit("[SWHost] live damaged boundary unconfirmed: forwarding retained packets without resetting source history", category: .swPlayback) + } + else { guardState.reset() } + } + } + + func read(isCurrent: () -> Bool = { true }, + from source: () throws -> UnsafeMutablePointer?) throws -> UnsafeMutablePointer? { + while isCurrent() { + if readyIndex < ready.count { + let entry = ready[readyIndex] + readyIndex += 1 + if readyIndex == ready.count { ready.removeAll(keepingCapacity: true); readyIndex = 0 } + admit(entry) + return entry.packet + } + if let error = deferredError { deferredError = nil; throw error } + let packet: UnsafeMutablePointer? + do { packet = try source() } + catch { + guard !pending.isEmpty else { throw error } + deferredError = error + try finish(verified: false) + continue + } + guard let packet else { + if pending.isEmpty { return nil } + try finish(verified: false) + continue + } + guard isCurrent() else { + var stale: UnsafeMutablePointer? = packet + av_packet_free(&stale) + reset() + return nil + } + let index = packet.pointee.stream_index + let stream: LivePacketReplayGuard.Stream? = index == videoIndex ? .video + : (index == audioIndex ? .audio : nil) + let timeBase = stream == .video ? videoTimeBase : audioTimeBase + var signature: LivePacketReplayGuard.Signature? + let seconds = Double(packet.pointee.dts) * timeBase + if let stream, timeBase > 0, packet.pointee.dts != Int64.min, packet.pointee.pts != Int64.min, + let data = packet.pointee.data, packet.pointee.size > 0 { + signature = .init(stream: stream, dts: packet.pointee.dts, pts: packet.pointee.pts, + payload: UnsafeRawBufferPointer(start: data, count: Int(packet.pointee.size))) + } + let decision = signature.map { + guardState.inspect($0, sourceSeconds: seconds, timeBaseSeconds: timeBase, + videoFrontier: videoFrontier, audioFrontier: audioFrontier, hasAudio: audioIndex >= 0, + isCorrupt: (packet.pointee.flags & AV_PKT_FLAG_CORRUPT) != 0) + } + if decision?.drop == true, !guardState.isDroppingReplay, decision?.event == nil { + var duplicate: UnsafeMutablePointer? = packet + av_packet_free(&duplicate) + continue + } + let untimedBoundaryVideo = guardState.isHoldingDamagedBoundary && signature == nil && index == videoIndex + let entry = Pending(packet: packet, signature: signature, seconds: seconds, + duplicate: decision?.drop ?? false, untimedBoundaryVideo: untimedBoundaryVideo) + if guardState.isDroppingReplay || decision?.holdDamagedBoundary == true || decision?.event != nil + || (!pending.isEmpty && (!guardState.isHoldingDamagedBoundary || untimedBoundaryVideo)) { + if signature == nil, (packet.pointee.flags & AV_PKT_FLAG_CORRUPT) != 0 { + guardState.noteDamagedPacket() + } + pending.append(entry); pendingBytes += max(0, Int(packet.pointee.size)) + switch decision?.event { + case .damagedBoundaryHeld: + EngineLog.emit("[SWHost] live damaged boundary held: sourceSeconds=\(String(format: "%.3f", seconds)); waiting for replay evidence before publishing video", category: .swPlayback) + case .damagedBoundaryForwarded: + try finish(verified: false, preserveHistory: true) + case .finished(let video, let audio, let duration): + try finish(verified: true) + EngineLog.emit("[SWHost] live source overlap resolved: removed \(video) video + \(audio) audio packets across \(String(format: "%.2f", duration))s; preserving DVR timeline", category: .swPlayback) + case .mismatch, .interrupted: + try finish(verified: false) + default: + if pending.count > LivePacketReplayGuard.maximumPendingPackets + || pendingBytes > LivePacketReplayGuard.maximumPendingBytes { + try finish(verified: false) + } + } + continue + } + admit(entry) + return packet + } + reset() + return nil + } + + private func admit(_ entry: Pending) { + guard let signature = entry.signature else { return } + if signature.stream == .video, let gap = videoProgress.observe(entry.seconds) { + EngineLog.emit("[VideoPacketProgress] event=gap route=software previous=\(String(format: "%.3f", gap.previous)) dts=\(String(format: "%.3f", entry.seconds)) gap=\(String(format: "%.3f", gap.seconds)) cadence=\(String(format: "%.3f", gap.cadence))", category: .swPlayback) + } + guardState.record(signature, sourceSeconds: entry.seconds) + if signature.stream == .video { videoFrontier = signature.dts } + else { audioFrontier = signature.dts } + } +} diff --git a/Sources/AetherEngine/Video/LiveWindow.swift b/Sources/AetherEngine/Video/LiveWindow.swift index 7105eaa84..d367c7df7 100644 --- a/Sources/AetherEngine/Video/LiveWindow.swift +++ b/Sources/AetherEngine/Video/LiveWindow.swift @@ -3,7 +3,9 @@ import Foundation /// Session-relative DVR timeline in seconds since first decoded frame, monotonic. `windowSeconds == nil` = live-only (no rewind). struct LiveWindow: Equatable { - let windowSeconds: Double? + private(set) var windowSeconds: Double? + + mutating func setWindowSeconds(_ seconds: Double?) { windowSeconds = seconds } private(set) var edgeTime: Double = 0 private var playhead: Double = 0 diff --git a/Sources/AetherEngine/Video/MP4SegmentMuxer.swift b/Sources/AetherEngine/Video/MP4SegmentMuxer.swift index 45fd56f63..a25b09308 100644 --- a/Sources/AetherEngine/Video/MP4SegmentMuxer.swift +++ b/Sources/AetherEngine/Video/MP4SegmentMuxer.swift @@ -47,10 +47,10 @@ final class MP4SegmentMuxer { enum DoviConfigPolicy: Sendable, Equatable { /// Stream-copy the record unchanged. Genuine P5, and P8.x on a DV panel. case keep - /// Drop `AV_PKT_DATA_DOVI_CONF` before write_header. P7's base layer and P8.2 (hvc1 + dvcC - /// trips VT -12906), and P8.x on a non-DV panel (-11868). + /// Drop `AV_PKT_DATA_DOVI_CONF` before write_header. P8.2 (hvc1 + dvcC trips VT -12906), AVC + /// Profile 9, and any source served as its base layer (`dolbyVisionHandling = .baseLayerOnly`). case strip - /// Rewrite to a valid P8.1: `dv_profile=8`, `compat=1`, `el_present=0`. P7-on-DV-panel + /// Rewrite to a valid P8.1: `dv_profile=8`, `compat=1`, `el_present=0`. P7 on every display /// (paired with the per-packet RPU conversion) and the malformed "P8.6" compat id (#53). case rewriteToProfile81 /// Rewrite to P5: `dv_profile=5`, `compat=0`, `el_present=0`. AE#455, opt-in. The bitstream @@ -103,8 +103,8 @@ final class MP4SegmentMuxer { struct AudioConfig { let codecpar: UnsafePointer let timeBase: AVRational - /// A complete sample entry box that replaces the one movenc writes for this track in the - /// init segment. Set for APAC, which movenc cannot write: the track is muxed as a stand-in + /// A complete sample entry box that replaces the one movenc writes for this track in the init + /// segment (#731). Set for APAC, which movenc cannot write: the track is muxed as a stand-in /// codec and its entry swapped here (see `APACSampleEntry`). let soundSampleEntryOverride: Data? /// AE#458: ISO 639-2/T for the track's `mdhd`. Nil writes nothing, leaving movenc's `und`. @@ -121,6 +121,20 @@ final class MP4SegmentMuxer { } } + /// `initBytes` with the audio track's sample entry replaced by `entry` (#731). An init without a + /// parseable sound track is forwarded unchanged and logged: AVPlayer then fails the audio naming + /// the stand-in codec, which is easier to read than corrupt bytes. + static func installingSoundSampleEntry(_ entry: Data?, in initBytes: Data) -> Data { + guard let entry else { return initBytes } + if let replaced = APACSampleEntry.replacingSoundSampleEntry(in: initBytes, with: entry) { return replaced } + EngineLog.emit( + "[MP4SegmentMuxer] ERROR: audio sample entry override could not be installed " + + "(no sound track in the \(initBytes.count) B init); AVPlayer will read the stand-in", + category: .session + ) + return initBytes + } + /// Result of a segment cut. `deferredAwaitingAudioSampleEntry` is a THIRD state, distinct from both /// success and failure: nothing was written, the muxer is intact, and the caller must retry the cut /// once an audio packet has been muxed. Collapsing it into nil (= failure) is what wedged AE#222. @@ -158,6 +172,9 @@ final class MP4SegmentMuxer { /// Same volume as cache adopt target so rename is metadata-only. private let sessionDir: URL private var currentStagingPath: URL + /// The current segment's staging file. Only appended to, then renamed as it stands on adoption, + /// which is what lets progressive delivery read it while it is written. + var stagingURL: URL { currentStagingPath } private var fd: Int32 = -1 private var formatContext: UnsafeMutablePointer? private var pb: UnsafeMutablePointer? @@ -289,6 +306,7 @@ final class MP4SegmentMuxer { maxBufferedFragmentSeconds: Double = 8.0, audioMoovPrimeFrame: [UInt8]? = nil, audioDelaySeconds: Double = 0, + onStorageExhausted: (@Sendable () -> Void)? = nil, onInitCaptured: @escaping (Data) -> Void ) throws { self.currentSegmentIndex = initialSegmentIndex @@ -321,29 +339,25 @@ final class MP4SegmentMuxer { let firstPath = Self.stagingPath(forSegmentIndex: initialSegmentIndex, in: sessionDir) self.currentStagingPath = firstPath - let firstFd = try Self.openPosix(path: firstPath) + let firstFd: Int32 + do { + firstFd = try Self.openPosix(path: firstPath) + } catch { + if Self.isOutOfSpace(error) { onStorageExhausted?() } + throw error + } self.fd = firstFd // Ref-typed counter shared with the splitter closure (closure can't capture self during init). let counter = ByteCounter() counter.fd = firstFd + counter.onStorageExhausted = onStorageExhausted self.byteCounter = counter let sampleEntryOverride = audio?.soundSampleEntryOverride self.splitter = FragmentSplitter( onHeaderComplete: { initBytes in - var initBytes = initBytes - if let entry = sampleEntryOverride { - if let replaced = APACSampleEntry.replacingSoundSampleEntry(in: initBytes, with: entry) { - initBytes = replaced - } else { - EngineLog.emit( - "[MP4SegmentMuxer] ERROR: audio sample entry override could not be installed " - + "(no sound track in the \(initBytes.count) B init); AVPlayer will read the stand-in", - category: .session - ) - } - } + let initBytes = Self.installingSoundSampleEntry(sampleEntryOverride, in: initBytes) // AE#187 defense-in-depth: strip a zero-sample video `sdtp` from the fragmented init before // forwarding it. The pinned FFmpegBuild (n8.1.2) never writes it, so this is a no-op there; // it neutralizes the box only for a consumer that links an older FFmpeg (a -force_load'ed @@ -360,6 +374,7 @@ final class MP4SegmentMuxer { if n < 0 { let err = errno if err == EINTR { continue } + if err == ENOSPC { counter.onStorageExhausted?() } counter.writeFailed = true return } @@ -378,6 +393,9 @@ final class MP4SegmentMuxer { let allocRet = avformat_alloc_output_context2(&ctxOut, nil, "mp4", "segment.m4s") guard allocRet == 0, let ctx = ctxOut else { close(firstFd) + // deinit runs for a throwing init once every stored property is set, and would close + // this number a second time, by then possibly another socket's or file's. + self.fd = -1 try? FileManager.default.removeItem(at: firstPath) throw MuxerError.allocFailed(code: allocRet) } @@ -388,6 +406,7 @@ final class MP4SegmentMuxer { avformat_free_context(ctx) self.formatContext = nil close(firstFd) + self.fd = -1 try? FileManager.default.removeItem(at: firstPath) throw MuxerError.avioAllocFailed } @@ -923,6 +942,7 @@ final class MP4SegmentMuxer { self.currentSegmentIndex = nextIdx byteCounter.fd = nextFd } catch { + if Self.isOutOfSpace(error) { byteCounter.onStorageExhausted?() } // isWedged: splitter would silently discard next fragment bytes until the pump failed a cut later. EngineLog.emit( "[MP4SegmentMuxer] open next staging file seg-\(nextIdx) FAILED: \(error)", @@ -950,6 +970,10 @@ final class MP4SegmentMuxer { return nil } + // Drain first, as the cut does. A fragment flush with packets still in the interleaver takes the + // first queued packet's DTS as the track end, and when check_pkt had clamped the written samples + // above it, movenc's get_cluster_duration aborts the process (StreamX crash 2026-10-10). + _ = av_interleaved_write_frame(ctx, nil) _ = av_write_frame(ctx, nil) _ = av_write_trailer(ctx) @@ -999,6 +1023,11 @@ final class MP4SegmentMuxer { return fd } + private static func isOutOfSpace(_ error: Error) -> Bool { + if case MuxerError.openStagingFileFailed(let code) = error { return code == ENOSPC } + return false + } + // MARK: - Internal cleanup /// avio_context_free does NOT free pb->buffer (separate av_malloc alloc); drop it explicitly first. @@ -1245,6 +1274,8 @@ private final class ByteCounter { var fd: Int32 = -1 var bytesWrittenCurrentSegment: Int = 0 var writeFailed: Bool = false + /// Reports a staging write that hit a full volume to the session's cache. + var onStorageExhausted: (@Sendable () -> Void)? var lifetimeFragmentBytes: Int = 0 var fragmentCuts: Int = 0 } diff --git a/Sources/AetherEngine/Video/NoCutStallWatchdog.swift b/Sources/AetherEngine/Video/NoCutStallWatchdog.swift index 32ca5cbfb..9008931df 100644 --- a/Sources/AetherEngine/Video/NoCutStallWatchdog.swift +++ b/Sources/AetherEngine/Video/NoCutStallWatchdog.swift @@ -80,6 +80,8 @@ final class NoCutStallWatchdog: @unchecked Sendable { private var holdRearmedAt: Date? private var consecutiveHolds = 0 private var reading = true + private var replayChecking = false + private var replayLastPacketAt: Date? private var exitLatched = false private var packetsRead = 0 @@ -132,6 +134,26 @@ final class NoCutStallWatchdog: @unchecked Sendable { lock.unlock() } + /// A verified-overlap scan intentionally cannot cut a segment. Keep watching the source for + /// starvation without classifying those packets as a stuck cutter. + func setReplayChecking(_ checking: Bool, at now: Date) { + lock.lock() + defer { lock.unlock() } + guard replayChecking != checking else { return } + replayChecking = checking + replayLastPacketAt = checking ? now : nil + holdRearmedAt = now + consecutiveHolds = 0 + resetWindowCounters() + } + + func noteReplayPacketRead(at now: Date) { + lock.lock() + packetsRead += 1 + replayLastPacketAt = now + lock.unlock() + } + func noteVideoPacket(pts: Int64, isKeyframe: Bool, synthesizedTimestamp: Bool = false) { lock.lock() defer { lock.unlock() } @@ -187,6 +209,16 @@ final class NoCutStallWatchdog: @unchecked Sendable { lock.lock() defer { lock.unlock() } guard !exitLatched, reading, let finalizeAt = lastFinalizeAt else { return nil } + if replayChecking { + // The producer is checking an already-muxed overlap and cannot finalize yet. A dead + // source must still be interruptible while it is parked inside av_read_frame. + let quietFor = now.timeIntervalSince(replayLastPacketAt ?? finalizeAt) + guard quietFor > HLSSegmentProducer.liveSourceStarvationTimeoutSeconds else { return nil } + exitLatched = true + return .exitForRetune(makeWindow(stalledFor: quietFor, + progress: packetsRead - packetsReadAtWindowStart, + readRate: 0, ptsAdvance: -1)) + } let stalledFor = now.timeIntervalSince(holdRearmedAt ?? finalizeAt) let progress = packetsRead - packetsReadAtWindowStart let readRate = stalledFor > 0 ? Double(progress) / stalledFor : 0 diff --git a/Sources/AetherEngine/Video/PacketRingBuffer.swift b/Sources/AetherEngine/Video/PacketRingBuffer.swift index 89946d7bd..17788a2d0 100644 --- a/Sources/AetherEngine/Video/PacketRingBuffer.swift +++ b/Sources/AetherEngine/Video/PacketRingBuffer.swift @@ -83,6 +83,13 @@ final class PacketRingBuffer: @unchecked Sendable { private let writeLock = NSLock() private let windowSeconds: Double private let byteBudget: Int + /// An opt-in capacity lease applies a strict startup and playback cap to this chunk spool. + /// Callers without retention leases retain their original byteBudget behavior. + private let strictRetention: Bool + private let startupMaximumBytes: Int + private let playbackCushionBytes: Int + private let playbackCushionSeconds: Double + private let retentionPolicy = LiveDVRRetentionPolicy() private let chunkTargetBytes: Int private let scratch: URL private let writeAll: WriteAll @@ -101,6 +108,9 @@ final class PacketRingBuffer: @unchecked Sendable { /// Oldest first; the last record is the chunk the writer appends to. private var chunks: [ChunkRecord] = [] private var retainedDiskBytes = 0 + private var residentBytes = 0 + private var awaitingKeyframe = false + private var writesSuspended = false /// Most recently used first, at most `readHandleCap`. Opening a descriptor per retained chunk /// would hold hundreds at a 2 GiB budget. private var readHandles: [ChunkHandle] = [] @@ -118,12 +128,20 @@ final class PacketRingBuffer: @unchecked Sendable { // MARK: - Init / close init(windowSeconds: Double, scratch: URL, byteBudget: Int = .max, - chunkTargetBytes: Int = 4 << 20, writeAll: WriteAll? = nil) throws { + retention: SoftwareDVRRetentionOptions? = nil, chunkTargetBytes: Int = 4 << 20, + writeAll: WriteAll? = nil) throws { self.windowSeconds = windowSeconds self.scratch = scratch self.byteBudget = max(0, byteBudget) - // Several chunks per budget, so evicting the oldest one frees a fraction of it, not all. - let target = min(chunkTargetBytes, max(64 << 10, self.byteBudget / 16)) + self.strictRetention = retention != nil + self.startupMaximumBytes = max(1, min(retention?.startupMaximumBytes ?? .max, self.byteBudget)) + self.playbackCushionBytes = retention?.playbackCushionBytes ?? 0 + self.playbackCushionSeconds = retention?.playbackCushionSeconds ?? 0 + // A strict lease needs chunks smaller than its smallest startup cap, including tiny test + // budgets. Callers without retention leases retain the normal 64 KiB minimum chunk size. + let target = retention == nil + ? min(chunkTargetBytes, max(64 << 10, self.byteBudget / 16)) + : min(chunkTargetBytes, max(1, self.startupMaximumBytes / 16)) self.chunkTargetBytes = max(1, min(target, Int(UInt32.max / 2))) self.writeAll = writeAll ?? Self.pwriteAll self.markerFD = SessionDirectoryLiveness.acquire(sessionDir: scratch, logPrefix: "[PacketRingBuffer]") @@ -148,6 +166,8 @@ final class PacketRingBuffer: @unchecked Sendable { edge = -.infinity chunks = [] retainedDiskBytes = 0 + residentBytes = 0 + awaitingKeyframe = false readHandles = [] let marker = markerFD markerFD = -1 @@ -183,8 +203,33 @@ final class PacketRingBuffer: @unchecked Sendable { defer { writeLock.unlock() } guard !isClosed else { tail = nil + if strictRetention { return } throw Failure.closed } + let limits = strictRetention ? retentionPolicy.snapshot : nil + let cap = strictRetention + ? min(byteBudget, limits.map { max(playbackCushionBytes, $0.retentionBytes) } + ?? startupMaximumBytes) + : byteBudget + if strictRetention { + lock.lock() + let suspended = writesSuspended + let waiting = awaitingKeyframe + lock.unlock() + if suspended || (waiting && !(isVideo && isKeyframe)) { return } + if bytes.count > cap { + lock.lock() + dropEntriesLocked(upTo: entries.count) + let doomed = releaseUnreferencedChunksLocked(includingTail: true) + awaitingKeyframe = true + compactIfDueLocked() + lock.unlock() + tail = nil + tailOffset = 0 + try deleteEvictedFiles(doomed) + return + } + } let placement: (chunk: UInt32, offset: Int) do { @@ -199,7 +244,7 @@ final class PacketRingBuffer: @unchecked Sendable { noteWriteFailureOnce(error) throw error } - guard makeRoomAfterFailedWrite(incomingKeyframe: isVideo && isKeyframe) else { throw error } + guard try makeRoomAfterFailedWrite(incomingKeyframe: isVideo && isKeyframe) else { throw error } placement = try writeLocked(bytes) } tailOffset = placement.offset + bytes.count @@ -218,15 +263,44 @@ final class PacketRingBuffer: @unchecked Sendable { } if isKeyframe { keyframeSeqs.append(firstSeq + (entries.count - head)) } entries.append(entry) + residentBytes += bytes.count + awaitingKeyframe = false if pts > edge { edge = pts } if let last = chunks.indices.last, chunks[last].id == placement.chunk { retainedDiskBytes += tailOffset - chunks[last].bytes chunks[last].bytes = tailOffset } - let doomed = evictLocked() + let doomed = evictLocked(window: limits?.windowSeconds ?? (strictRetention && limits != nil ? playbackCushionSeconds : windowSeconds), + maximumBytes: cap) + let tailWasReleased = strictRetention && chunks.isEmpty lock.unlock() + if tailWasReleased { + tail = nil + tailOffset = 0 + } + try deleteEvictedFiles(doomed) + } + + @discardableResult + func setLimits(_ limits: LiveDVRLimits, availableBytes: Int64?) -> Bool { + guard strictRetention else { return false } + lock.lock() + let resident = residentBytes + lock.unlock() + retentionPolicy.update(limits, availableBytes: availableBytes, residentBytes: resident) + return true + } + + var retainedBytes: Int { + lock.lock() + defer { lock.unlock() } + return residentBytes + } - Self.unlinkAll(doomed) + var retainedWindowSeconds: Double? { + guard oldestKeyframePts != nil else { return nil } + if let limits = retentionPolicy.snapshot { return limits.windowSeconds } + return windowSeconds } // MARK: - Reader @@ -365,7 +439,9 @@ final class PacketRingBuffer: @unchecked Sendable { func stillRun(target: Double, maxPackets: Int, maxSpanSeconds: Double, - reorderTail: Int) -> [Packet]? { + reorderTail: Int, isCancelled: (() -> Bool)? = nil) -> [Packet]? { + guard target.isFinite, isCancelled?() != true else { return nil } + let deadline = ContinuousClock.now.advanced(by: .milliseconds(750)) lock.lock() guard let startIdx = lastKeyframeIndexLocked(atOrBefore: target) else { lock.unlock() @@ -384,8 +460,10 @@ final class PacketRingBuffer: @unchecked Sendable { reorderTail: reorderTail, indexReachesEnd: reachesEnd) else { return nil } - let run = span.compactMap { seq -> Packet? in - window[seq - base].isVideo ? packet(atSeq: seq) : nil + var run: [Packet] = [] + for seq in span { + if isCancelled?() == true || (isCancelled != nil && ContinuousClock.now >= deadline) { return nil } + if window[seq - base].isVideo, let packet = packet(atSeq: seq) { run.append(packet) } } // Eviction between the snapshot and the off-lock reads would cost the run its keyframe, and // a run that does not open on one decodes as garbage. @@ -498,7 +576,7 @@ final class PacketRingBuffer: @unchecked Sendable { insertReadHandleLocked(handle) let doomed = releaseUnreferencedChunksLocked(includingTail: false) lock.unlock() - Self.unlinkAll(doomed) + try deleteEvictedFiles(doomed) } /// A write that failed because the volume or the quota has no room, which freeing a chunk can cure. @@ -521,7 +599,7 @@ final class PacketRingBuffer: @unchecked Sendable { /// up to the first keyframe in a later chunk, or, when the incoming packet is itself a video /// keyframe that can open a fresh span, everything including the tail chunk. False when nothing /// could be freed, and the packet is dropped as before. - private func makeRoomAfterFailedWrite(incomingKeyframe: Bool) -> Bool { + private func makeRoomAfterFailedWrite(incomingKeyframe: Bool) throws -> Bool { lock.lock() var doomed: [URL] = [] var releasedTail = false @@ -539,7 +617,7 @@ final class PacketRingBuffer: @unchecked Sendable { tail = nil tailOffset = 0 } - Self.unlinkAll(doomed) + try deleteEvictedFiles(doomed) if !doomed.isEmpty { EngineLog.emit("[PacketRingBuffer] write failed; freed \(doomed.count) chunk(s) and retrying " + "(the rewind window shrinks instead of the live feed stopping)", @@ -548,11 +626,10 @@ final class PacketRingBuffer: @unchecked Sendable { return !doomed.isEmpty } - /// Drop leading entries outside `edge - windowSeconds` or past the byte budget, keyframe-aligned, - /// and return the chunk files no retained entry references any more (the caller unlinks them - /// after releasing the lock). Walks the keyframe list, one step per GOP. - private func evictLocked() -> [URL] { - let cutoff = edge - windowSeconds + /// Evict by time, then by the effective host lease. A strict lease also bounds actual + /// retained payload and chunk bytes; a GOP that cannot fit is dropped until its next keyframe. + private func evictLocked(window: Double, maximumBytes: Int) -> [URL] { + let cutoff = edge - window var pivot: Int? = nil var k = keyframeHead while k < keyframeSeqs.count, let idx = indexLocked(keyframeSeqs[k]), entries[idx].pts <= cutoff { @@ -562,32 +639,54 @@ final class PacketRingBuffer: @unchecked Sendable { if let p = pivot, p > head { dropEntriesLocked(upTo: p) } var doomed = releaseUnreferencedChunksLocked(includingTail: false) - // Audit VPERF-101: time alone put 5.4 GB on disk at 8 Mbit/s over the 90 min default, and an - // infinite window never evicted at all. - while retainedDiskBytes > byteBudget, chunks.count > 1 { - if let p = keyframeInLaterChunkLocked() { - dropEntriesLocked(upTo: p) - } else if retainedDiskBytes - byteBudget > byteBudget, let p = firstIndexInLaterChunkLocked() { - // A GOP longer than the whole budget (or a stream that never flags a keyframe) must - // not grow the directory without bound; the rewind floor then decodes from the next - // keyframe, which `firstKeyframeSeq` points at. - dropEntriesLocked(upTo: p) - } else { - break + if strictRetention { + while residentBytes > maximumBytes || retainedDiskBytes > maximumBytes { + if let p = nextRetainedKeyframeIndexLocked() { + dropEntriesLocked(upTo: p) + doomed += releaseUnreferencedChunksLocked(includingTail: false) + } else { + dropEntriesLocked(upTo: entries.count) + doomed += releaseUnreferencedChunksLocked(includingTail: true) + awaitingKeyframe = true + break + } + } + } else { + // The standalone ring's soft byte budget remains unchanged. + while retainedDiskBytes > byteBudget, chunks.count > 1 { + if let p = keyframeInLaterChunkLocked() { + dropEntriesLocked(upTo: p) + } else if retainedDiskBytes - byteBudget > byteBudget, + let p = firstIndexInLaterChunkLocked() { + dropEntriesLocked(upTo: p) + } else { + break + } + let freed = releaseUnreferencedChunksLocked(includingTail: false) + if freed.isEmpty { break } + doomed += freed } - let freed = releaseUnreferencedChunksLocked(includingTail: false) - if freed.isEmpty { break } - doomed += freed } compactIfDueLocked() return doomed } + private func nextRetainedKeyframeIndexLocked() -> Int? { + var k = keyframeHead + while k < keyframeSeqs.count { + if let idx = indexLocked(keyframeSeqs[k]), idx > head { return idx } + k += 1 + } + return nil + } + private func dropEntriesLocked(upTo idx: Int) { guard idx > head else { return } + for entry in entries[head..= entries.count { awaitingKeyframe = true } } /// The first retained keyframe stored in a later chunk than the oldest retained entry. @@ -706,7 +805,19 @@ final class PacketRingBuffer: @unchecked Sendable { } } - private static func unlinkAll(_ urls: [URL]) { - for url in urls { unlink(url.path) } + /// The strict host cannot keep writing if a failed unlink would leave orphaned disk bytes. + private func deleteEvictedFiles(_ urls: [URL]) throws { + if !strictRetention { + for url in urls { unlink(url.path) } + return + } + for url in urls { + if unlink(url.path) == 0 || errno == ENOENT { continue } + let failure = NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) + lock.lock() + writesSuspended = true + lock.unlock() + throw failure + } } } diff --git a/Sources/AetherEngine/Video/SegmentCache.swift b/Sources/AetherEngine/Video/SegmentCache.swift index 4fcc1388c..7d7cddc43 100644 --- a/Sources/AetherEngine/Video/SegmentCache.swift +++ b/Sources/AetherEngine/Video/SegmentCache.swift @@ -43,12 +43,29 @@ final class SegmentCache: @unchecked Sendable { /// and detaches AVKit's PiP legible renderer (Sodalite#32). 0 = window-only legacy pruning /// (live sessions, where the sliding playlist already dropped everything behind the window). private let retentionBudgetBytes: Int + private let nativeLiveDVRPolicy: LiveDVRRetentionPolicy? + private var nativeLiveRetentionFloor = 0 + private lazy var nativeLiveExpiryQueue = DispatchQueue(label: "com.aetherengine.live-expiry", qos: .utility) + private var nativeLiveExpiryTimer: DispatchSourceTimer? // condition; opt-in, cancelled by close private var entries: [Int: URL] = [:] /// Per-index byte ledger for _totalBytes. Stat-on-eviction was wrong when same index was /// overwritten (stat returned new size, old bytes stayed counted forever). private var entryBytes: [Int: Int] = [:] + /// Progressive delivery: the segments a producer is writing right now, index to staging file. + /// Registered when the producer opens the segment (`beginInProgress`), removed when it is + /// adopted or abandoned. A serve that finds its index here reads the staging file as it grows + /// (`ProgressiveSegmentReader`) instead of waiting for the cut. + private var inProgress: [Int: URL] = [:] + /// The staging file each recently adopted segment was renamed from, and its final size, so a + /// progressive reader can tell that the file IT holds was sealed, rather than the same index + /// produced again by a later epoch. Keyed by staging file (unique per segment and epoch) and + /// bounded to the most recent adoptions in adoption order: evicting by index dropped every + /// adoption below the 64 highest at once, so after a backward seek each reader read as abandoned. + private var sealedFromStaging: [URL: Int] = [:] + private var sealedStagingOrder: [URL] = [] + /// Pinned in RAM (~3.5 KB); AVPlayer fetches exactly once per session; never evicted. private var initSegment: Data? @@ -103,12 +120,45 @@ final class SegmentCache: @unchecked Sendable { /// every fold counter at 0, which is exactly what disarms the #358 recovery arms.) static let maxFoldRunLength = 64 + /// The volume holding `sessionDir` ran out of space while this session wrote to it: the + /// directory, a segment, or a muxer's staging file. Read when the pump gives up, so the failure + /// names the full disk instead of the audio or the source, neither of which is at fault. + /// Guarded by `condition`. + private var storageExhaustedLatch = false + + var storageExhausted: Bool { + condition.lock(); defer { condition.unlock() } + return storageExhaustedLatch + } + + func noteStorageExhausted() { + condition.lock() + let first = !storageExhaustedLatch + storageExhaustedLatch = true + condition.unlock() + if first { + EngineLog.emit("[SegmentCache] the segment volume is out of space at \(sessionDir.path)", + category: .session) + } + } + + /// A write that failed because the volume is full: `NSFileWriteOutOfSpaceError` from Foundation, + /// `ENOSPC` from POSIX, or either one underneath a wrapping error. + static func isOutOfSpace(_ error: Error) -> Bool { + let ns = error as NSError + if ns.domain == NSCocoaErrorDomain, ns.code == NSFileWriteOutOfSpaceError { return true } + if ns.domain == NSPOSIXErrorDomain, ns.code == Int(ENOSPC) { return true } + if let underlying = ns.userInfo[NSUnderlyingErrorKey] as? Error { return isOutOfSpace(underlying) } + return false + } + /// (10, 20)=30 entries, ~300 MB at 4K HDR HEVC ~10 MB/seg. init(forwardWindow: Int = 10, backwardWindow: Int = 20, retentionBudgetBytes: Int = 0, - baseDirectory: URL? = nil, onResidentSetChanged: (@Sendable () -> Void)? = nil) { + baseDirectory: URL? = nil, nativeLiveDVRPolicy: LiveDVRRetentionPolicy? = nil, onResidentSetChanged: (@Sendable () -> Void)? = nil) { self.forwardWindow = forwardWindow self.backwardWindow = backwardWindow self.retentionBudgetBytes = retentionBudgetBytes + self.nativeLiveDVRPolicy = nativeLiveDVRPolicy self.onResidentSetChanged = onResidentSetChanged // aether-segments/ prefix lets sweepStaleSessionDirs() find sibling dirs from crashed sessions. @@ -123,6 +173,7 @@ final class SegmentCache: @unchecked Sendable { } catch { EngineLog.emit("[SegmentCache] session dir create failed at \(sessionDir.path): \(error)", category: .session) + if Self.isOutOfSpace(error) { storageExhaustedLatch = true } } // Before the sweep, so a sibling constructed in the same breath cannot read this session @@ -134,6 +185,7 @@ final class SegmentCache: @unchecked Sendable { } deinit { + nativeLiveExpiryTimer?.cancel() releaseLiveMarker() } @@ -226,6 +278,7 @@ final class SegmentCache: @unchecked Sendable { } catch { EngineLog.emit("[SegmentCache] session dir restore failed at \(sessionDir.path): \(error)", category: .session) + if Self.isOutOfSpace(error) { noteStorageExhausted() } return false } releaseLiveMarker() @@ -245,12 +298,24 @@ final class SegmentCache: @unchecked Sendable { try data.write(to: fileURL, options: [.atomic]) writeOK = true } catch { - if restoreSessionDirIfMissing(), (try? data.write(to: fileURL, options: [.atomic])) != nil { - writeOK = true - } else { - EngineLog.emit("[SegmentCache] write failed seg-\(index): \(error)", + // The retry's own error decides: a missing directory restored onto a full volume fails + // the second write with ENOSPC, behind a first error that only said the file was missing. + var finalError: Error? = error + if restoreSessionDirIfMissing() { + do { + try data.write(to: fileURL, options: [.atomic]) + finalError = nil + } catch { + finalError = error + } + } + if let finalError { + EngineLog.emit("[SegmentCache] write failed seg-\(index): \(finalError)", category: .session) + if Self.isOutOfSpace(finalError) { noteStorageExhausted() } writeOK = false + } else { + writeOK = true } } @@ -308,7 +373,18 @@ final class SegmentCache: @unchecked Sendable { } condition.lock() + // Sealed or not, this staging file is no longer being written. + if inProgress[index] == stagingPath { inProgress.removeValue(forKey: index) } + if renameOK { + if sealedFromStaging.updateValue(byteCount, forKey: stagingPath) == nil { + sealedStagingOrder.append(stagingPath) + } + while sealedStagingOrder.count > Self.sealedStagingMemory { + sealedFromStaging.removeValue(forKey: sealedStagingOrder.removeFirst()) + } + } guard !closed else { + condition.broadcast() condition.unlock() try? FileManager.default.removeItem(at: fileURL) return @@ -344,6 +420,8 @@ final class SegmentCache: @unchecked Sendable { func close() { condition.lock() closed = true + let expiryTimer = nativeLiveExpiryTimer + nativeLiveExpiryTimer = nil let dir = sessionDir let hadEntries = !entries.isEmpty entries.removeAll(keepingCapacity: false) @@ -351,11 +429,15 @@ final class SegmentCache: @unchecked Sendable { videoReaches.removeAll(keepingCapacity: false) initSegment = nil initVersions.removeAll(keepingCapacity: false) + inProgress.removeAll(keepingCapacity: false) + sealedFromStaging.removeAll(keepingCapacity: false) + sealedStagingOrder.removeAll(keepingCapacity: false) _totalBytes = 0 _highestStoredIndex = -1 condition.broadcast() condition.unlock() + expiryTimer?.cancel() releaseLiveMarker() try? FileManager.default.removeItem(at: dir) // A closed cache holds nothing, and that is a resident-set change like any other. The engine @@ -463,6 +545,77 @@ final class SegmentCache: @unchecked Sendable { return readOrDrop(index: index, url: url) } + // MARK: - Progressive delivery + + /// How many adoptions `sealedFromStaging` remembers: enough for every reader still draining. + static let sealedStagingMemory = 64 + + /// The producer opened segment `index` in `stagingPath`, which from here on is only appended to + /// until it is adopted under its final name. + func beginInProgress(index: Int, stagingPath: URL) { + condition.lock() + if !closed { + inProgress[index] = stagingPath + condition.broadcast() + } + condition.unlock() + } + + /// The producer gave up the segment it was writing (restart, failed cut, teardown), so its + /// partial bytes are never adopted. A reader draining it learns that on its next poll. + func abandonInProgress(index: Int) { + condition.lock() + if inProgress.removeValue(forKey: index) != nil { condition.broadcast() } + condition.unlock() + } + + enum InProgressState: Equatable { + case writing + case sealed(bytes: Int) + case abandoned + } + + /// What became of the staging file a progressive reader holds. + func inProgressState(index: Int, stagingPath: URL) -> InProgressState { + condition.lock() + defer { condition.unlock() } + if inProgress[index] == stagingPath { return .writing } + if let bytes = sealedFromStaging[stagingPath] { return .sealed(bytes: bytes) } + return .abandoned + } + + /// `fetch` for the loopback server. With `progressive`, a segment that is being written is + /// answered at once with a reader over its staging file, so AVPlayer receives each fragment as + /// the muxer flushes it instead of the whole segment after its cut. + func fetchSource(index: Int, timeout: TimeInterval, progressive: Bool) -> SegmentSource? { + let deadline = Date().addingTimeInterval(timeout) + condition.lock() + while true { + if let url = entries[index] { + condition.unlock() + return readOrDrop(index: index, url: url).map { .data($0) } + } + if closed { + condition.unlock() + return nil + } + if progressive, let staging = inProgress[index] { + condition.unlock() + if let reader = ProgressiveSegmentReader(cache: self, index: index, stagingPath: staging) { + return .progressive(reader) + } + // The staging file was renamed or removed between the lookup and the open: look again. + condition.lock() + if inProgress[index] == staging { inProgress.removeValue(forKey: index) } + continue + } + if !condition.wait(until: deadline) { + condition.unlock() + return nil + } + } + } + /// AE#451: a read that comes back empty for a file the bookkeeping still lists is the same lie /// `peekURL` guards against, and here it is load-bearing: this serve answers a retriable 503, /// and an entry left standing means every retry takes this branch again while the producer, @@ -762,6 +915,63 @@ final class SegmentCache: @unchecked Sendable { return bytes } + /// Metadata-only admission from the host setter. Exactly one weakly-owned timer per opted-in + /// cache; it progresses even when the pump is parked and AVPlayer makes no playlist requests. + func startNativeLiveDVRExpiryChecks() { + condition.lock() + guard !closed, nativeLiveDVRPolicy != nil, nativeLiveExpiryTimer == nil else { + condition.unlock() + return + } + let timer = DispatchSource.makeTimerSource(queue: nativeLiveExpiryQueue) + timer.schedule(deadline: .now() + .seconds(1), repeating: .seconds(1), leeway: .milliseconds(100)) + timer.setEventHandler { [weak self] in _ = self?.reconcileExpiredNativeLiveDVRRetention() } + nativeLiveExpiryTimer = timer + timer.resume() + condition.unlock() + } + + /// Both the independent timer and the producer use this implementation. The cap is evaluated + /// by the caller FIRST; then expiry pruning and the current entry count share this lock hold. + /// An expired smaller cap cannot park a pump behind unpruned expanded history. + @discardableResult + func reconcileExpiredNativeLiveDVRRetention(headroomCap: Int? = nil) -> Bool { + condition.lock() + guard !closed else { condition.unlock(); return false } + let expiredOrDenied = nativeLiveDVRPolicy?.snapshot?.retentionBytes == 0 + let doomed = expiredOrDenied ? pruneOutsideWindow() : [] + let hasHeadroom = headroomCap.map { entries.count < $0 } ?? true + if !doomed.isEmpty { condition.broadcast() } + condition.unlock() + for url in doomed { try? FileManager.default.removeItem(at: url) } + if !doomed.isEmpty { onResidentSetChanged?() } + return hasHeadroom + } + + /// Called off the main actor after a native limit update and each finalized live segment. + func applyNativeLiveRetentionFloor(_ floor: Int) { + condition.lock() + nativeLiveRetentionFloor = max(nativeLiveRetentionFloor, floor) + let doomed = pruneOutsideWindow() + condition.broadcast() + condition.unlock() + for url in doomed { try? FileManager.default.removeItem(at: url) } + if !doomed.isEmpty { onResidentSetChanged?() } + } + + /// The finite exception consists of the consumer's existing handover/prefetch band and + /// eight newest segments. No unbounded `[target ... highestStoredIndex]` exception for live. + private func isNativeLiveMandatory(_ index: Int) -> Bool { + let consumer = currentTargetIndex >= 0 && + index >= currentTargetIndex - backwardWindow && index <= currentTargetIndex + forwardWindow + return consumer || index > _highestStoredIndex - LiveWindowSizing.minSafeSegments + } + + var nativeLiveMandatoryBytes: Int { + condition.lock(); defer { condition.unlock() } + return entryBytes.reduce(0) { $0 + (isNativeLiveMandatory($1.key) ? $1.value : 0) } + } + // MARK: - Internal /// Prune to [currentTarget - backwardWindow, max(currentTarget + forwardWindow, highestStoredIndex)]. @@ -775,6 +985,24 @@ final class SegmentCache: @unchecked Sendable { /// ends keeps each side of the resident span contiguous, so the provider's residency gate /// (a resident backward target = no producer restart) holds across the whole retained span. private func pruneOutsideWindow() -> [URL] { + if let limits = nativeLiveDVRPolicy?.snapshot { + var keptBytes = entryBytes.reduce(0) { $0 + (isNativeLiveMandatory($1.key) ? $1.value : 0) } + var doomed: [URL] = [] + // Newest-first produces a contiguous playable suffix, even when an older consumer + // band must remain pinned. The published DVR range already walks this suffix. + for index in entries.keys.sorted(by: >) where !isNativeLiveMandatory(index) { + let bytes = entryBytes[index] ?? 0 + if index >= nativeLiveRetentionFloor && bytes <= max(0, limits.retentionBytes - keptBytes) { + keptBytes += bytes + } else if let url = entries.removeValue(forKey: index) { + _totalBytes -= bytes + entryBytes.removeValue(forKey: index) + videoReaches.removeValue(forKey: index) + doomed.append(url) + } + } + return doomed + } let lo = currentTargetIndex - backwardWindow let hi = max(currentTargetIndex + forwardWindow, _highestStoredIndex) var doomed: [URL] = [] @@ -845,3 +1073,90 @@ final class SegmentCache: @unchecked Sendable { return values?.fileSize ?? 0 } } + +/// A segment as the loopback server gets it: complete bytes, or a reader over one being written. +enum SegmentSource { + case data(Data) + case progressive(ProgressiveSegmentReader) +} + +/// Reads a segment while its producer is still writing it. +/// +/// The muxer appends each flushed fragment (moof+mdat) to the staging file and never rewrites what +/// it wrote, and adoption renames the file as it stands. So a descriptor opened on the staging file +/// reads a growing prefix of the final segment, the rename does not disturb it, and the read is +/// complete at the byte count the cache records for the adoption. A segment the producer abandons +/// reads as `.abandoned`, and the server closes the connection so AVPlayer asks for it again. +final class ProgressiveSegmentReader: @unchecked Sendable { + let index: Int + let stagingPath: URL + private let fd: Int32 + private weak var cache: SegmentCache? + private(set) var offset: Int64 = 0 + + enum Next: Equatable { + case bytes(Data) + case finished + case abandoned + } + + init?(cache: SegmentCache, index: Int, stagingPath: URL) { + let fd = open(stagingPath.path, O_RDONLY) + guard fd >= 0 else { return nil } + self.fd = fd + self.cache = cache + self.index = index + self.stagingPath = stagingPath + } + + deinit { close(fd) } + + /// The next bytes past `offset`, waiting for the producer to write them. `.finished` once the + /// sealed segment is read to its end; `.abandoned` when the producer gave it up, or wrote nothing + /// for `idleTimeout` (a wedged producer must not hold a connection forever). + func next(maxBytes: Int = 256 * 1024, pollInterval: TimeInterval = 0.02, + idleTimeout: TimeInterval = 60) -> Next { + let deadline = Date().addingTimeInterval(idleTimeout) + while true { + var st = stat() + let statOK = fstat(fd, &st) == 0 + if statOK, st.st_size > offset { + let count = Int(min(Int64(maxBytes), st.st_size - offset)) + var data = Data(count: count) + let read = data.withUnsafeMutableBytes { pread(fd, $0.baseAddress, count, off_t(offset)) } + if read > 0 { + if read < count { data.removeSubrange(read ..< count) } + offset += Int64(read) + return .bytes(data) + } + } + switch cache?.inProgressState(index: index, stagingPath: stagingPath) ?? .abandoned { + case .writing: + break + case .sealed(let bytes): + if offset >= Int64(bytes) { return .finished } + // The last fragment can land with the seal, after the stat above, so stat again and + // read on. A file shorter than its recorded size is not a state to spin in. + var sealedStat = stat() + if fstat(fd, &sealedStat) == 0, sealedStat.st_size > offset { continue } + return .abandoned + case .abandoned: + return .abandoned + } + if Date() >= deadline { return .abandoned } + Thread.sleep(forTimeInterval: pollInterval) + } + } + + /// Reads to the seal, for a caller that needs the whole segment. nil when it was abandoned. + func readToEnd() -> Data? { + var all = Data() + while true { + switch next() { + case .bytes(let d): all.append(d) + case .finished: return all + case .abandoned: return nil + } + } + } +} diff --git a/Sources/AetherEngine/Video/SoftwareDVRRetentionOptions.swift b/Sources/AetherEngine/Video/SoftwareDVRRetentionOptions.swift new file mode 100644 index 000000000..4bcc2d7e2 --- /dev/null +++ b/Sources/AetherEngine/Video/SoftwareDVRRetentionOptions.swift @@ -0,0 +1,17 @@ +import Foundation + +/// Opt-in storage bounds for a software live session, selected before its spool opens. +/// Runtime capacity leases may authorize more history. When a lease expires, the +/// spool falls back to the caller's small playback cushion without reopening the source. +public struct SoftwareDVRRetentionOptions: Equatable, Sendable { + public let startupMaximumBytes: Int + public let playbackCushionBytes: Int + public let playbackCushionSeconds: Double + + public init(startupMaximumBytes: Int, playbackCushionBytes: Int, playbackCushionSeconds: Double) { + self.startupMaximumBytes = max(1, startupMaximumBytes) + self.playbackCushionBytes = max(1, playbackCushionBytes) + self.playbackCushionSeconds = playbackCushionSeconds.isFinite + ? max(0, playbackCushionSeconds) : 0 + } +} diff --git a/Sources/AetherEngine/Video/VODSegmentCutter.swift b/Sources/AetherEngine/Video/VODSegmentCutter.swift index 415e4523b..0b02d4c5d 100644 --- a/Sources/AetherEngine/Video/VODSegmentCutter.swift +++ b/Sources/AetherEngine/Video/VODSegmentCutter.swift @@ -59,4 +59,10 @@ struct VODSegmentCutter { } return current } + + /// What `index` would return, without advancing. + func peekIndex(pts: Int64, isKeyframe: Bool) -> Int { + var copy = self + return copy.index(pts: pts, isKeyframe: isKeyframe) + } } diff --git a/Sources/AetherEngine/Video/VideoSegmentProvider.swift b/Sources/AetherEngine/Video/VideoSegmentProvider.swift index 886b7a8b0..e411392a7 100644 --- a/Sources/AetherEngine/Video/VideoSegmentProvider.swift +++ b/Sources/AetherEngine/Video/VideoSegmentProvider.swift @@ -694,6 +694,10 @@ struct LiveTargetDurationDerivation { } struct LiveTargetDurationSeal { + static func accepts(_ duration: Double, target: Int) -> Bool { + // Compare the EXTINF value actually serialized, including its millisecond rounding. + duration.isFinite && duration >= 0 && ((duration * 1_000).rounded() / 1_000).rounded() <= Double(target) + } private(set) var value: Int? private var didLogUpwardDrift = false @@ -723,12 +727,30 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { private let iFrameSourceLock = NSLock() private var _iFrameSource: IFrameSegmentSource? private let isLive: Bool + /// `LoadOptions.progressiveSegmentDelivery`, read for VOD only (see `fetchesProgressively`). + private let servesSegmentsProgressively: Bool /// Sequential-origin session: playlist grows with finalized real durations (see _seqDurations). private let sequentialAppendPlaylist: Bool /// Drives both playlist firstVisible and cache eviction cutoff so they never drift. - private let liveWindowSizing: LiveWindowSizing + private let baseLiveWindowSizing: LiveWindowSizing + private let nativeLiveDVRPolicy: LiveDVRRetentionPolicy? + private var liveWindowSizing: LiveWindowSizing { + guard let limits = nativeLiveDVRPolicy?.snapshot else { return baseLiveWindowSizing } + return LiveWindowSizing(targetSegmentDurationSeconds: baseLiveWindowSizing.targetSegmentDurationSeconds, + dvrWindowSeconds: limits.windowSeconds, retentionBudgetBytes: limits.retentionBytes) + } + + /// Reconcile playlist and cache off the caller's actor; this never rebuilds the source/player. + func applyNativeLiveDVRRetention() { + guard isLive, nativeLiveDVRPolicy?.snapshot != nil else { return } + cache.applyNativeLiveRetentionFloor(notePlaylistBuild().firstVisible) + } /// Only `.fastZap` sessions may serve a shallow first window after a bounded grace. private let allowsBoundedDegradedStart: Bool + private let startupGraceSeconds: TimeInterval? + private let singleSegmentStartupMinimumSeconds: TimeInterval? + /// Report the selected startup policy once per session, including repeat requests. + private var didLogStartupPolicy = false /// AE#594 arm B: skip the bounded branch, so the wait ends at the full holdback cushion or at the /// outer wall-clock deadline. Measurement arm, off unless the environment asks for it. private let boundedStartFloorsAtHoldback: Bool @@ -764,6 +786,13 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// AE#458: ISO 639-2/T of the ONE audio track muxed into the variant, for the master's /// EXT-X-MEDIA:TYPE=AUDIO tag. Nil for a source whose audio carries no resolvable language. private let audioLanguage: String? + /// Channel count of the audio track as it is SERVED (the muxer's codecpar, so a bridged track + /// reports the encoder's layout, not the source's). Drives CHANNELS on the audio rendition. + private let audioChannelCount: Int? + /// The served audio is a stream-copied E-AC-3 JOC bitstream, i.e. the objects survived into the + /// segments. Only then may the rendition claim `"/JOC"`; a JOC source that fell back to the + /// FLAC bridge has lost its objects and must advertise its bed count like any other track. + private let audioIsAtmosStreamCopy: Bool /// #15: native subtitle cue stores (one per text track) for the WebVTT rendition served to AVPlayer. /// Immutable references; each store is internally locked and filled lazily by the readers on selection. @@ -871,6 +900,33 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// RFC 8216 requires TARGETDURATION to stay constant for the lifetime of a media playlist. /// Guarded by stateLock and preserved across in-provider producer reopens. private var liveTargetDurationSeal = LiveTargetDurationSeal() + private var retiredLivePlaylists: [(targetDuration: Int, endIndex: Int)] = [] + var onLivePlaylistRenewal: (@Sendable () -> Void)? + + var livePlaylistGeneration: Int { + stateLock.lock(); defer { stateLock.unlock() } + return retiredLivePlaylists.count + } + + func livePlaylistEndIndex(generation: Int) -> Int? { + stateLock.lock(); defer { stateLock.unlock() } + return retiredLivePlaylists.indices.contains(generation) ? retiredLivePlaylists[generation].endIndex : nil + } + + func liveTargetDurationSeconds(maxSegmentDuration: Double, generation: Int) -> Int { + let candidate = currentLiveTargetDuration(maxSegmentDuration: maxSegmentDuration) + stateLock.lock() + if retiredLivePlaylists.indices.contains(generation) { + let target = retiredLivePlaylists[generation].targetDuration + stateLock.unlock() + return target + } + let resolved = liveTargetDurationSeal.resolve(candidate: candidate.value) + stateLock.unlock() + if resolved.didSeal { EngineLog.emit("[HLSVideoEngine] \(candidate.account)", category: .session) } + return resolved.value + } + /// AE#446: wall time of the newest finalized live segment, and the latch that says the source /// stopped delivering. See `liveDeliveryStalled`. private var _lastLiveSegmentFinalizedAt: Date? @@ -960,10 +1016,16 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { hdcpLevel: String?, sourceBitrate: Int64, audioLanguage: String? = nil, + audioChannelCount: Int? = nil, + audioIsAtmosStreamCopy: Bool = false, isLive: Bool = false, + servesSegmentsProgressively: Bool = false, sequentialAppendPlaylist: Bool = false, liveWindowSizing: LiveWindowSizing = LiveWindowSizing(targetSegmentDurationSeconds: 4.0, dvrWindowSeconds: nil), + nativeLiveDVRPolicy: LiveDVRRetentionPolicy? = nil, allowsBoundedDegradedStart: Bool = false, + startupGraceSeconds: TimeInterval? = nil, + singleSegmentStartupMinimumSeconds: TimeInterval? = nil, boundedStartFloorsAtHoldback: Bool = false, firstServeLatchCoversEngineCut: Bool = false, blockingReloadOverride: Bool? = nil, @@ -992,9 +1054,17 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { self.cache = cache self.segments = segments self.isLive = isLive + self.servesSegmentsProgressively = servesSegmentsProgressively self.sequentialAppendPlaylist = sequentialAppendPlaylist - self.liveWindowSizing = liveWindowSizing + self.baseLiveWindowSizing = liveWindowSizing + self.nativeLiveDVRPolicy = nativeLiveDVRPolicy self.allowsBoundedDegradedStart = allowsBoundedDegradedStart + self.singleSegmentStartupMinimumSeconds = singleSegmentStartupMinimumSeconds.flatMap { + $0.isFinite && $0 > 0 ? $0 : nil + } + self.startupGraceSeconds = startupGraceSeconds.flatMap { + $0.isFinite && $0 >= 0 ? min(120, $0) : nil + } self.boundedStartFloorsAtHoldback = boundedStartFloorsAtHoldback self.firstServeLatchCoversEngineCut = firstServeLatchCoversEngineCut self.blockingReloadOverride = blockingReloadOverride @@ -1007,6 +1077,8 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { self.hdcpLevel = hdcpLevel self.sourceBitrate = sourceBitrate self.audioLanguage = audioLanguage + self.audioChannelCount = audioChannelCount + self.audioIsAtmosStreamCopy = audioIsAtmosStreamCopy self.restartHandler = restartHandler self.unrecoverableGapHandler = unrecoverableGapHandler self.restartActivity = restartActivity @@ -1055,6 +1127,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// Append a finalized live segment. Index must equal segments.count; out-of-order ignored. func appendLiveSegment(index: Int, startSeconds: Double, durationSeconds: Double, discontinuous: Bool = false) { + let candidate = currentLiveTargetDuration(maxSegmentDuration: durationSeconds) stateLock.lock() guard index == segments.count else { stateLock.unlock() @@ -1075,6 +1148,16 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { durationSeconds: durationSeconds, discontinuous: discontinuous )) + // A longer GOP cannot change an existing playlist's TARGETDURATION. Retire that + // URL and expose the same cache through a new, independently sealed playlist. + var renewPlaylist = false + if let sealed = liveTargetDurationSeal.value, + !LiveTargetDurationSeal.accepts(durationSeconds, target: sealed) { + retiredLivePlaylists.append((targetDuration: sealed, endIndex: index)) + liveTargetDurationSeal = LiveTargetDurationSeal() + _ = liveTargetDurationSeal.resolve(candidate: candidate.value) + renewPlaylist = true + } let finalizedAt = Date() if let last = _lastLiveSegmentFinalizedAt { _liveDeliveryCadence.note(intervalSeconds: finalizedAt.timeIntervalSince(last)) @@ -1088,6 +1171,11 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { firstSegmentCondition.lock() firstSegmentCondition.broadcast() firstSegmentCondition.unlock() + applyNativeLiveDVRRetention() + if renewPlaylist { + EngineLog.emit("[HLSVideoEngine] live playlist renewed: generation=\(livePlaylistGeneration) target=\(candidate.value)s segment=\(index) duration=\(durationSeconds)s; retaining source and cache", category: .session) + onLivePlaylistRenewal?() + } } /// Append the real duration of a finalized sequential-VOD segment (index-contiguous from 0; @@ -1169,6 +1257,8 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { // own lock, and nesting it inside this one would invert the ordering `evictBelow`'s async hop // below exists to avoid. let observedBytes = cache.meanEntryBytes + let residentFloor = nativeLiveDVRPolicy?.snapshot != nil + ? cache.highestResidentIndex.map { cache.contiguousBackwardFloor(from: $0) } : nil stateLock.lock() defer { stateLock.unlock() } refreshCounter += 1 @@ -1186,7 +1276,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { // segments exist, do not advance past 0 so AVPlayer's first // read sees all produced segments and can establish a live // edge without losing a not-yet-buffered position. - let newFirst = max(0, total - window) + let newFirst = max(0, total - window, residentFloor ?? 0) if newFirst > _liveFirstVisible { // RFC 8216 §6.2.2: EXT-X-DISCONTINUITY-SEQUENCE must increment for each // discontinuity-tagged segment that slides out; segments array is never pruned. @@ -1348,13 +1438,13 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// Pure lookup for a scrub thumbnail: no side effects, no restarts; nil outside the /// resident window or on a cache miss. Works for live and VOD (VOD `segments` carry /// `startSeconds` from init); callers gate on session type one layer up. - func thumbnailSegment(atSeconds seconds: Double) -> (index: Int, startSeconds: Double, fileURL: URL)? { + func thumbnailSegment(atSeconds seconds: Double) -> (index: Int, startSeconds: Double, durationSeconds: Double, fileURL: URL)? { stateLock.lock() let segs = segments stateLock.unlock() guard let idx = Self.thumbnailSegmentIndex(atSeconds: seconds, segments: segs) else { return nil } guard let url = cache.peekURL(index: idx) else { return nil } - return (idx, segs[idx].startSeconds, url) + return (idx, segs[idx].startSeconds, segs[idx].durationSeconds, url) } /// AE#441: the oldest position a rewind can actually land on and still play forward, in output @@ -1430,7 +1520,21 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { var mediaFetchCount: UInt64 { stateLock.lock() defer { stateLock.unlock() } - return _mediaFetchCount + return _mediaFetchCount &+ _progressiveChunkCount + } + + /// Chunks of progressively delivered segments the server sent. AVPlayer receiving a segment + /// that is still being written over one long connection sends no new request, and the #65 wedge + /// watchdog counts requests, so it would read a healthy transfer as AVPlayer no longer fetching + /// (seen on the iOS Simulator over a slow link: a 6 s stall declared a wedge, and the recovery + /// seek reloaded the item). A chunk that leaves the server is AVPlayer reading; a player that + /// truly stops reading fills the socket and the count stops with it. + private var _progressiveChunkCount: UInt64 = 0 + + func didDeliverProgressiveChunk(index: Int) { + stateLock.lock() + _progressiveChunkCount &+= 1 + stateLock.unlock() } private var _mediaFetchCount: UInt64 = 0 @@ -1610,13 +1714,30 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// AVPlayer -12889s at ~3.5 s of silence and three strikes kill the item). Live keeps its own /// contracts (below-window fast 404, LL-HLS blocking reload) and never signals. func mediaSegment(at index: Int, onSlow: (@Sendable () -> Void)?) -> Data? { - guard let onSlow, !isLive else { return serveSegment(at: index) } + Self.drain(mediaSegmentSource(at: index, onSlow: onSlow)) + } + + /// The loopback server's entry: a segment being written comes back as a reader over its staging + /// file when progressive delivery is on (`SegmentCache.fetchSource`). + func mediaSegmentSource(at index: Int, onSlow: (@Sendable () -> Void)?) -> SegmentSource? { + guard let onSlow, !isLive else { return serveSource(at: index) } let signal = SlowServeSignal(thresholdSeconds: slowServeThresholdSeconds, onSlow: onSlow) defer { signal.complete() } - return serveSegment(at: index) + return serveSource(at: index) } - private func serveSegment(at index: Int) -> Data? { + /// For a caller that needs the whole segment: a progressive source is read to its seal. + static func drain(_ source: SegmentSource?) -> Data? { + switch source { + case .data(let data): return data + case .progressive(let reader): return reader.readToEnd() + case nil: return nil + } + } + + private var fetchesProgressively: Bool { !isLive && servesSegmentsProgressively } + + private func serveSource(at index: Int) -> SegmentSource? { guard index >= 0, index < currentSegmentCount else { return nil } // Segment below the live window is evicted; returning nil = fast 404 so AVPlayer resyncs. @@ -1640,7 +1761,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { // Fast path: serve from cache. if let hit = cache.peek(index: index) { - return logServed(index: index, bytes: hit, totalStart: totalStart, restarted: false) + return logServed(index: index, source: .data(hit), totalStart: totalStart, restarted: false) } // staleBelowProducer: indexRange() can still report stale lower bounds from a previous producer @@ -1681,9 +1802,10 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { // min...max is not proof of residency: retained scrub bands leave interior holes. // Only wait when the active producer can actually march into this index. if activeProducerCovers(index), - let waited = cache.fetch(index: index, timeout: sparseHoleWaitSlice) { + let waited = cache.fetchSource(index: index, timeout: sparseHoleWaitSlice, + progressive: fetchesProgressively) { return logServed( - index: index, bytes: waited, totalStart: totalStart, restarted: false) + index: index, source: waited, totalStart: totalStart, restarted: false) } needsRestart = true } else { @@ -1789,19 +1911,21 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { } attempt += 1 } - if let bytes = cache.fetch(index: index, timeout: repositionWaitSlice) { - return logServed(index: index, bytes: bytes, totalStart: totalStart, restarted: true) + if let source = cache.fetchSource(index: index, timeout: repositionWaitSlice, + progressive: fetchesProgressively) { + return logServed(index: index, source: source, totalStart: totalStart, restarted: true) } // Audit SEG-3: a closed cache answers fetch at once, so riding a restart that // outlives stop() would spin this thread until the ride cap. if cache.isClosed { break } } - return logServed(index: index, bytes: nil, totalStart: totalStart, restarted: true) + return logServed(index: index, source: nil, totalStart: totalStart, restarted: true) } - let bytes = cache.fetch(index: index, timeout: forwardBackpressureWaitSeconds) + let source = cache.fetchSource(index: index, timeout: forwardBackpressureWaitSeconds, + progressive: fetchesProgressively) if tookForwardWait, !needsRestart { - if bytes == nil { + if source == nil { // Record the front as of the END of the burned wait: progress DURING the wait // resets the comparison base, so only a truly frozen march escalates next time. recordForwardWaitMiss(index: index, front: activeMarchFront) @@ -1809,7 +1933,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { clearForwardWaitMiss() } } - return logServed(index: index, bytes: bytes, totalStart: totalStart, restarted: needsRestart) + return logServed(index: index, source: source, totalStart: totalStart, restarted: needsRestart) } /// AE#169 round 2 pure decision: whether the forward-window backpressure wait may still trust @@ -1837,20 +1961,27 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { stateLock.unlock() } - private func logServed(index: Int, bytes: Data?, totalStart: DispatchTime, restarted: Bool) -> Data? { + private func logServed(index: Int, source: SegmentSource?, totalStart: DispatchTime, + restarted: Bool) -> SegmentSource? { let elapsedMs = Double(DispatchTime.now().uptimeNanoseconds - totalStart.uptimeNanoseconds) / 1_000_000 - if let bytes = bytes { + if case .data(let bytes) = source { EngineLog.emit( "[HLSVideoEngine] seg\(index): served \(bytes.count) B (wait=\(String(format: "%.1f", elapsedMs))ms cache=\(cache.count) restarted=\(restarted))", category: .session ) + } else if source != nil { + EngineLog.emit( + "[HLSVideoEngine] seg\(index): serving while it is written " + + "(wait=\(String(format: "%.1f", elapsedMs))ms cache=\(cache.count) restarted=\(restarted))", + category: .session + ) } else { EngineLog.emit( "[HLSVideoEngine] seg\(index): cache miss after \(String(format: "%.0f", elapsedMs))ms (cache=\(cache.count) restarted=\(restarted))", category: .session ) } - return bytes + return source } /// AE#408 pure decision: a backward target jump landed on a segment that is still resident. May the @@ -2458,6 +2589,13 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { stateLock.unlock() cancelWaiters() } + + /// A host-authorized source retry continues this same cache and playlist. + func resumeLiveProduction() { + stateLock.lock() + _liveProductionHalted = false + stateLock.unlock() + } var liveTargetDurationFloorSeconds: Double? { // The floor tracks observed cadence regardless of the gate override: patience must cover the real // inter-batch gap even when a host forces blocking-reload on/off (#167). @@ -2591,12 +2729,21 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { return (segments.count, summed, maxDuration) } + /// Only completed, independently decodable media participates. The optional duration threshold + /// never cuts a GOP early or weakens the standard/full-holdback path. + private func hasBoundedStartupMedia(_ snapshot: (count: Int, summed: Double, maxDuration: Double)) -> Bool { + if snapshot.count >= LiveEdgePolicy.minStartupSegments { return true } + guard snapshot.count == 1, let minimum = singleSegmentStartupMinimumSeconds else { return false } + return snapshot.summed.isFinite && snapshot.summed >= minimum + } + /// Block until the first live window holds the live-edge holdback (3 x TARGETDURATION) of content, so /// AVPlayer's initial seek to edge-minus-holdback lands inside the window instead of its stall-danger /// zone (-16832; AE#189). A `.fastZap` session may take the explicitly bounded shallow-window path /// after two segments and one clamped segment-duration grace (AE#208). `.standard` never takes it. - /// Both paths avoid -12888 on an empty or single-segment playlist. The gate and served playlist use - /// the same sealed TARGETDURATION. + /// A caller may also admit one sufficiently long finalized segment through the same bounded path. + /// Empty and short single-segment windows still wait. The gate and served playlist use the same + /// sealed TARGETDURATION; this changes initial admission only, not live-edge safety or reloads. func waitForFirstLiveSegment(timeout: TimeInterval) -> Bool { guard isLive else { return true } let deadline = Date().addingTimeInterval(timeout) @@ -2612,9 +2759,15 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { defer { parkedWaiters -= 1 } while true { if waitersCancelled { return false } + if !didLogStartupPolicy { + didLogStartupPolicy = true + let grace = startupGraceSeconds.map(LiveEdgePolicy.seconds) ?? "auto" + let single = singleSegmentStartupMinimumSeconds.map(LiveEdgePolicy.seconds) ?? "off" + EngineLog.emit("[HLSVideoEngine] live startup policy: bounded=\(allowsBoundedDegradedStart) grace=\(grace) singleSegmentMinimum=\(single) holdbackFloor=\(boundedStartFloorsAtHoldback)", category: .session) + } // AE#684 latched ingest sessions; AE#686 extends it to a source the engine cuts itself, // where the second grace bought nothing on device but a session 1 s further from the edge. - if firstManifestServed, liveCadencePolicy != nil || firstServeLatchCoversEngineCut { + if firstManifestServed, liveCadencePolicy != nil || firstServeLatchCoversEngineCut || livePlaylistGeneration > 0 { accountForRepeatServe(since: enteredAt, note: "first-serve latch") return true } @@ -2632,9 +2785,9 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { } if allowsBoundedDegradedStart, !boundedStartFloorsAtHoldback, - snap.count >= LiveEdgePolicy.minStartupSegments, + hasBoundedStartupMedia(snap), degradedDeadline == nil { - let grace = LiveEdgePolicy.fastZapDegradedGraceSeconds( + let grace = startupGraceSeconds ?? LiveEdgePolicy.fastZapDegradedGraceSeconds( maxSegmentDuration: snap.maxDuration ) degradedGrace = grace @@ -2662,7 +2815,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { } if let degradedDeadline, Date() >= degradedDeadline, - after.count >= LiveEdgePolicy.minStartupSegments { + hasBoundedStartupMedia(after) { let sealed = sealLiveTargetDuration(afterTarget) // AE#374: the grace is the last leg of this wait, not the wait. Reporting it alone // left a bounded start reading as a half-second one when it had held for twelve. @@ -2712,6 +2865,7 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { note: String? = nil ) { firstManifestServed = true + firstSegmentCondition.broadcast() guard !didAccountForFirstServe else { accountForRepeatServe(since: entered, note: note) return @@ -2847,11 +3001,38 @@ final class VideoSegmentProvider: HLSSegmentProvider, @unchecked Sendable { /// AE#458: NAME is required and must be unique in the group, and with one muxed track it always is. /// AVKit labels the option from LANGUAGE, not from NAME, so this only has to be human-readable; /// the localized language name is what the subtitle renditions already use. - var masterAudioRendition: (language: String, name: String)? { - guard let audioLanguage else { return nil } - let name = Locale.current.localizedString(forIdentifier: audioLanguage) ?? audioLanguage - return (language: audioLanguage, name: name) - } + /// AE#726: an untagged track gets no rendition, except a stream-copied E-AC-3 JOC one. Its CHANNELS is + /// the only place the master can say "object audio", and without the tag AVFoundation renders the bed. + var masterAudioRendition: (language: String?, name: String)? { + if let audioLanguage { + let name = Locale.current.localizedString(forIdentifier: audioLanguage) ?? audioLanguage + return (language: audioLanguage, name: name) + } + return audioIsAtmosStreamCopy ? (language: nil, name: Self.untaggedAtmosRenditionName) : nil + } + + static let untaggedAtmosRenditionName = "Dolby Atmos" + + /// Apple HLS Authoring Spec 2.13 ("CHANNELS ... MUST be present") plus Dolby's DD+ Online + /// Delivery Kit: the value is the count of decodable objects, a slash, then `JOC`. 16 is the + /// object count Dolby's own Atmos masters and Apple's examples carry, and it is what the engine + /// can state without the JOC complexity index, which FFmpeg's `handle_eac3` reads from the + /// independent substream only and therefore leaves at 0 for this class of source. + /// A stream that is not object audio gets its plain served channel count, which is equally + /// required and equally absent before this. + var masterAudioChannels: String? { + guard masterAudioRendition != nil else { return nil } // no rendition tag, nothing to attribute + if audioIsAtmosStreamCopy { return Self.atmosChannelsAttribute } + guard let n = audioChannelCount, n > 0 else { return nil } + return String(n) + } + + /// The CHANNELS value a stream-copied E-AC-3 JOC rendition is advertised with. The object count + /// should strictly be `complexity_index_type_a` from the `EC3SpecificBox`; 16 is what Dolby's + /// DD+ Online Delivery Kit and Apple's published Atmos masters carry, and it is what the engine + /// can state without that index. docs/formats.md quotes this string, and + /// `DocumentedConstantsTests` holds the two together. + static let atmosChannelsAttribute = "16/JOC" // MARK: - Native subtitle renditions (#15) diff --git a/Sources/AetherEngine/View/AetherPlayerView.swift b/Sources/AetherEngine/View/AetherPlayerView.swift index 58e789ea3..df629d1ad 100644 --- a/Sources/AetherEngine/View/AetherPlayerView.swift +++ b/Sources/AetherEngine/View/AetherPlayerView.swift @@ -27,9 +27,12 @@ import SwiftUI /// can also change across sessions when consecutive sources dispatch to /// different paths. @MainActor -public final class AetherPlayerView: PlatformBaseView { +public final class AetherPlayerView: PlatformBaseView, HeldStillSurface { private var hostedLayer: CALayer? + /// AE#711 follow-up: the picture held over an in-place item swap, above `hostedLayer`. + private let presenter = HeldStillPresenter() + private var stillLayer: CALayer? { presenter.layer } /// Engine-internal. The engine this view was last bound to, so a dismantling surface can unbind /// from it synchronously and a second engine binding the view can take it over (AE#536). @@ -81,10 +84,11 @@ public final class AetherPlayerView: PlatformBaseView { #endif private func applyLayerFrame() { - guard let hosted = hostedLayer else { return } + guard hostedLayer != nil || stillLayer != nil else { return } CATransaction.begin() CATransaction.setDisableActions(true) - hosted.frame = bounds + hostedLayer?.frame = bounds + presenter.layout(bounds) CATransaction.commit() } @@ -104,9 +108,9 @@ public final class AetherPlayerView: PlatformBaseView { hosted.removeFromSuperlayer() } #if canImport(UIKit) - self.layer.addSublayer(layer) + if let still = stillLayer { self.layer.insertSublayer(layer, below: still) } else { self.layer.addSublayer(layer) } #elseif canImport(AppKit) - self.layer?.addSublayer(layer) + if let still = stillLayer { self.layer?.insertSublayer(layer, below: still) } else { self.layer?.addSublayer(layer) } // Resize the video layer in lockstep with the view's bounds during a // live window drag. Without this it only catches up on the next layout() // pass, and because an NSView's layer is anchored bottom-left that lag @@ -123,6 +127,7 @@ public final class AetherPlayerView: PlatformBaseView { /// replacement (used on unbind / teardown). Same ownership rule as /// `attach`: a layer that has moved to another surface stays there. func detach() { + clearStill() guard let hosted = hostedLayer else { return } CATransaction.begin() CATransaction.setDisableActions(true) @@ -132,6 +137,20 @@ public final class AetherPlayerView: PlatformBaseView { hostedLayer = nil CATransaction.commit() } + + // MARK: - Held picture + + /// Engine-internal. Lays `frame` over the hosted layer until `clearStill()`, see `HeldStillPresenter`. + @discardableResult + func showStill(_ frame: CVPixelBuffer, gravity: AVLayerVideoGravity, isHDR: Bool) -> Bool { + let host: CALayer? = layer + return presenter.show(frame, gravity: gravity, isHDR: isHDR, on: host, bounds: bounds) + } + + /// Engine-internal. Removes the held picture, if any. Idempotent. + func clearStill() { presenter.clear() } + + var isHoldingStill: Bool { presenter.layer != nil } } // MARK: - Platform base view alias diff --git a/Sources/AetherEngine/View/AetherStillView.swift b/Sources/AetherEngine/View/AetherStillView.swift new file mode 100644 index 000000000..e325b6fb4 --- /dev/null +++ b/Sources/AetherEngine/View/AetherStillView.swift @@ -0,0 +1,68 @@ +import Foundation +import QuartzCore +import AVFoundation + +#if canImport(UIKit) +import UIKit +#elseif canImport(AppKit) +import AppKit +#endif + +/// A transparent surface for a host that renders the native path through AVKit rather than through +/// `AetherPlayerView`, so the engine has somewhere to hold the picture across the item swap of an +/// audio-track switch (`replaceCurrentItem` blanks the player layer until the next item's first +/// frame). Place it above the video and below the host's own chrome, for instance at the top of +/// `AVPlayerViewController.contentOverlayView`, and hand it to `AetherEngine.bindStillView(_:)`. It +/// draws nothing and takes no input outside that window. +@MainActor +public final class AetherStillView: PlatformBaseView, HeldStillSurface { + + /// How the held picture fills the view. Set it to the fill the host's own player uses, since the + /// engine's `videoGravity` does not reach an AVKit-rendered picture. + public var videoGravity: AVLayerVideoGravity = .resizeAspect + + private let presenter = HeldStillPresenter() + + #if canImport(UIKit) + public override init(frame: CGRect) { + super.init(frame: frame) + backgroundColor = .clear + isUserInteractionEnabled = false + } + + public required init?(coder: NSCoder) { + super.init(coder: coder) + backgroundColor = .clear + isUserInteractionEnabled = false + } + + public override func layoutSubviews() { + super.layoutSubviews() + presenter.layout(bounds) + } + #elseif canImport(AppKit) + public override init(frame frameRect: NSRect) { + super.init(frame: frameRect) + wantsLayer = true + } + + public required init?(coder: NSCoder) { + super.init(coder: coder) + wantsLayer = true + } + + public override func layout() { + super.layout() + presenter.layout(bounds) + } + #endif + + func showStill(_ frame: CVPixelBuffer, gravity: AVLayerVideoGravity, isHDR: Bool) -> Bool { + let host: CALayer? = layer + return presenter.show(frame, gravity: videoGravity, isHDR: isHDR, on: host, bounds: bounds) + } + + func clearStill() { presenter.clear() } + + var isHoldingStill: Bool { presenter.layer != nil } +} diff --git a/Sources/AetherEngine/View/HeldStill.swift b/Sources/AetherEngine/View/HeldStill.swift new file mode 100644 index 000000000..5948d85ac --- /dev/null +++ b/Sources/AetherEngine/View/HeldStill.swift @@ -0,0 +1,81 @@ +import Foundation +import QuartzCore +import AVFoundation + +/// A surface the engine can hold a picture on across an in-place item swap (AE#711 follow-up): +/// `AetherPlayerView` when the engine renders into it, `AetherStillView` when the host renders the +/// native path through AVKit and binds one for this alone. +@MainActor +protocol HeldStillSurface: AnyObject { + /// `gravity` is the engine's; a surface that takes its fill from the host ignores it. + func showStill(_ frame: CVPixelBuffer, gravity: AVLayerVideoGravity, isHDR: Bool) -> Bool + func clearStill() + var isHoldingStill: Bool { get } +} + +/// The one-sample layer both surfaces show the held picture with. A sample-buffer layer rather than +/// `contents`, so an HDR frame is presented through its colour attachments the way the software path +/// presents every frame. +@MainActor +final class HeldStillPresenter { + private(set) var layer: AVSampleBufferDisplayLayer? + + /// False when the frame cannot be wrapped for display; nothing is shown then. + func show(_ frame: CVPixelBuffer, gravity: AVLayerVideoGravity, isHDR: Bool, + on host: CALayer?, bounds: CGRect) -> Bool { + clear() + guard let host, let sample = Self.sample(frame) else { return false } + let still = AVSampleBufferDisplayLayer() + still.videoGravity = gravity + if #available(tvOS 26.0, iOS 26.0, macOS 26.0, visionOS 26.0, *) { + still.preferredDynamicRange = isHDR ? .high : .standard + } else { + #if os(iOS) || os(macOS) + still.wantsExtendedDynamicRangeContent = isHDR + #endif + } + CATransaction.begin() + CATransaction.setDisableActions(true) + host.addSublayer(still) + still.frame = bounds + still.sampleBufferRenderer.enqueue(sample) + layer = still + CATransaction.commit() + return true + } + + func clear() { + guard let still = layer else { return } + CATransaction.begin() + CATransaction.setDisableActions(true) + still.removeFromSuperlayer() + CATransaction.commit() + still.sampleBufferRenderer.flush() + layer = nil + } + + func layout(_ bounds: CGRect) { + layer?.frame = bounds + } + + private static func sample(_ frame: CVPixelBuffer) -> CMSampleBuffer? { + var description: CMVideoFormatDescription? + guard CMVideoFormatDescriptionCreateForImageBuffer( + allocator: kCFAllocatorDefault, imageBuffer: frame, formatDescriptionOut: &description + ) == noErr, let description else { return nil } + var timing = CMSampleTimingInfo(duration: .invalid, presentationTimeStamp: .zero, + decodeTimeStamp: .invalid) + var sample: CMSampleBuffer? + guard CMSampleBufferCreateReadyWithImageBuffer( + allocator: kCFAllocatorDefault, imageBuffer: frame, formatDescription: description, + sampleTiming: &timing, sampleBufferOut: &sample + ) == noErr, let sample else { return nil } + if let attachments = CMSampleBufferGetSampleAttachmentsArray(sample, createIfNecessary: true), + CFArrayGetCount(attachments) > 0 { + let dict = unsafeBitCast(CFArrayGetValueAtIndex(attachments, 0), to: CFMutableDictionary.self) + CFDictionarySetValue(dict, Unmanaged.passUnretained(kCMSampleAttachmentKey_DisplayImmediately).toOpaque(), + Unmanaged.passUnretained(kCFBooleanTrue).toOpaque()) + } + return sample + } +} diff --git a/Sources/aetherctl/BackgroundAudioCmd.swift b/Sources/aetherctl/BackgroundAudioCmd.swift index 3504611a7..5c6180dde 100644 --- a/Sources/aetherctl/BackgroundAudioCmd.swift +++ b/Sources/aetherctl/BackgroundAudioCmd.swift @@ -8,13 +8,15 @@ import AetherEngine /// Drive a software-path source through the full engine, then toggle the SW-path background-audio-only flag /// (the macOS stand-in for the iOS background lifecycle) and verify audio keeps advancing while video is /// dropped, then resumes on foreground return. Exercises the real runDemuxLoop background branch headless. -func runBackgroundAudio(url: URL, fgSeconds: Double, bgSeconds: Double) -> Int32 { - print(EngineLog.redacted("aetherctl bgaudio: \(url.absoluteString) (fg=\(fgSeconds)s bg=\(bgSeconds)s)")) +func runBackgroundAudio(url: URL, fgSeconds: Double, bgSeconds: Double, loseSession: Bool) -> Int32 { + print(EngineLog.redacted("aetherctl bgaudio: \(url.absoluteString) (fg=\(fgSeconds)s bg=\(bgSeconds)s" + + "\(loseSession ? " lose-session" : ""))")) // Must use CFRunLoopRun, not a blocking semaphore: AetherEngine is @MainActor, so parking the main thread // would deadlock the executor. The run loop also lets the host's time timer + Combine sinks fire. let box = UncheckedBox(nil) Task { @MainActor in - box.value = await backgroundAudioTest(url: url, fgSeconds: fgSeconds, bgSeconds: bgSeconds) + box.value = await backgroundAudioTest(url: url, fgSeconds: fgSeconds, bgSeconds: bgSeconds, + loseSession: loseSession) CFRunLoopStop(CFRunLoopGetMain()) } CFRunLoopRun() @@ -22,7 +24,12 @@ func runBackgroundAudio(url: URL, fgSeconds: Double, bgSeconds: Double) -> Int32 } @MainActor -private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) async -> Int32 { +private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double, loseSession: Bool) async -> Int32 { + // AE#739: the session under test is the SW host's VideoToolbox one, which native routing never builds. + if loseSession { + AetherEngine.setForceSoftwarePathForTesting(true) + EngineLog.handler = { print($0) } + } let engine: AetherEngine do { engine = try AetherEngine() @@ -60,7 +67,24 @@ private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) // Phase 1: foreground baseline (video gate active). print("--- foreground (video-gated) ---") - await tickFor(fgSeconds, phase: "FG") + var fgLossVideoDelta: Int? + if loseSession { + // AE#739: a loss while video is wanted must recover on its own, without a lifecycle event. + await tickFor(fgSeconds / 2, phase: "FG") + guard engine.invalidateSoftwareVideoSessionForTesting() else { + print("FAIL: --lose-session needs the VT HEVC decoder on the SW path (HEVC source)") + engine.stop() + return 1 + } + print("--- VT session invalidated in the foreground ---") + // Let the loss surface and the reposition land before measuring. + await tickFor(1, phase: "FG-lost") + let vfAfterLoss = vframes() + await tickFor(fgSeconds / 2, phase: "FG-lost") + fgLossVideoDelta = vframes() - vfAfterLoss + } else { + await tickFor(fgSeconds, phase: "FG") + } let clockBeforeBg = engine.currentTime let vfBeforeBg = vframes() let fpBeforeBg = physFootprintBytes() @@ -68,6 +92,10 @@ private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) // Phase 2: background-audio-only (video dropped, pace on audio renderer). print("--- background-audio-only (video dropped, pace on audio) ---") engine.setSoftwareBackgroundAudioOnlyForTesting(true) + if loseSession { + // The screen lock lands while no video is decoded, so nothing can observe it. + _ = engine.invalidateSoftwareVideoSessionForTesting() + } await tickFor(bgSeconds, phase: "BG") let clockAfterBg = engine.currentTime let vfAfterBg = vframes() @@ -92,6 +120,9 @@ private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) print("Background video frames: +\(bgVideoDelta) (expect ~0, video dropped)") print(String(format: "Background footprint delta: %+.1fMB (expect small, audio-paced not unbounded)", bgFootprintDeltaMB)) print("Foreground-2 video frames: +\(fg2VideoDelta) (expect > 0, video resumed)") + if let fgLossVideoDelta { + print("Video frames after FG loss: +\(fgLossVideoDelta) (expect > 0, session rebuilt)") + } print("=====================================") var ok = true @@ -103,7 +134,16 @@ private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) print("WARN: video frames advanced during background (+\(bgVideoDelta)); video should be dropped") } if fg2VideoDelta <= 0 { - print("WARN: video did not resume after foreground return (+\(fg2VideoDelta))") + if loseSession { + print("FAIL: video did not resume after foreground return on a lost session (AE#739)") + ok = false + } else { + print("WARN: video did not resume after foreground return (+\(fg2VideoDelta))") + } + } + if let fgLossVideoDelta, fgLossVideoDelta <= 0 { + print("FAIL: video did not recover from a session lost in the foreground (AE#739)") + ok = false } if ok { print("OK: background-audio-only kept audio advancing while video was dropped, and video resumed on return.") @@ -118,7 +158,7 @@ private func backgroundAudioTest(url: URL, fgSeconds: Double, bgSeconds: Double) // (setSoftwareBackgroundAudioOnlyForTesting / softwareVideoFramesEnqueuedForTesting), // which are compiled out of Release, so the harness itself is DEBUG-only. Keep a // stub so `main.swift`'s unconditional dispatch still links in Release builds. -func runBackgroundAudio(url: URL, fgSeconds: Double, bgSeconds: Double) -> Int32 { +func runBackgroundAudio(url: URL, fgSeconds: Double, bgSeconds: Double, loseSession: Bool) -> Int32 { print("aetherctl bgaudio is a DEBUG-only harness (it needs engine test hooks that are compiled out of Release).") print("Rebuild in debug to use it: swift build --product aetherctl") return 2 diff --git a/Sources/aetherctl/PlaybackCmd.swift b/Sources/aetherctl/PlaybackCmd.swift index 61e3f4823..5c991d10c 100644 --- a/Sources/aetherctl/PlaybackCmd.swift +++ b/Sources/aetherctl/PlaybackCmd.swift @@ -99,13 +99,13 @@ enum LoadOptionChange { /// and log every overlay cue that arrives. Repro harness for "loads but never /// plays" reports and for live teletext end-to-end validation (#107). func runPlay(url: URL, seconds: Double, live: Bool, nativeHLS: Bool = false, liveIngest: Bool = false, fastZap: Bool = false, liveStartImmediately: Bool = true, dvrWindow: Double?, subsPick: String?, hostCalls: [String], audioStats: Bool = false, seekEvery: Double? = nil, seekPattern: [Double] = [], seekCount: Int? = nil, startPosition: Double? = nil, mallocCensus: Bool = false, forceSoftware: Bool = false, softwareEscalation: Bool = true, - censusThresholdMB: Int? = nil, censusHz: Double? = nil, frameTimes: Bool = false, presentTimes: Bool = false, servedURL: Bool = false, pictureProbe: Bool = false, pictureOrigin: Double = 0, + censusThresholdMB: Int? = nil, censusHz: Double? = nil, frameTimes: Bool = false, presentTimes: Bool = false, servedURL: Bool = false, pictureProbe: Bool = false, pictureOrigin: Double = 0, nativeVideoFrameDiagnostics: Bool = false, nativeVideoFrameRecovery: Bool = false, sidecars: [ExternalSubtitleTrack] = [], audioSwitch: AudioSwitchRequest? = nil, teletextPage: Int? = nil, teletextSwitch: TeletextPageSwitchRequest? = nil, audioDelayMs: Int = 0, audioDelaySwitches: [AudioDelaySwitchRequest] = [], pausedMount: Bool = false, optionCorrection: LoadOptionCorrectionRequest? = nil, - sequentialOrigin: Bool = false, maxConcurrentRequests: Int? = nil, heldConnection: Bool = false, declaredDuration: Double? = nil, + sequentialOrigin: Bool = false, maxConcurrentRequests: Int? = nil, heldConnection: Bool = false, progressiveSegments: Bool = false, declaredDuration: Double? = nil, httpHeaders: [String: String] = [:], deinterlaceFieldRate: DeinterlaceFieldRate = .field, assertDolbyVision: Bool = false, @@ -132,7 +132,7 @@ func runPlay(url: URL, seconds: Double, live: Bool, nativeHLS: Bool = false, liv // CFRunLoopRun, not a blocking semaphore: AetherEngine is @MainActor, so parking the main thread would deadlock the executor. let box = UncheckedBox(nil) Task { @MainActor in - box.value = await playSmokeTest(url: url, seconds: seconds, live: live, forceSoftware: forceSoftware, softwareEscalation: softwareEscalation, nativeHLS: nativeHLS, liveIngest: liveIngest, fastZap: fastZap, liveStartImmediately: liveStartImmediately, dvrWindow: dvrWindow, subsPick: subsPick, hostCalls: hostCalls, audioStats: audioStats, seekEvery: seekEvery, seekPattern: seekPattern, seekCount: seekCount, startPosition: startPosition, frameTimes: frameTimes, presentTimes: presentTimes, servedURL: servedURL, pictureProbe: pictureProbe, pictureOrigin: pictureOrigin, sidecars: sidecars, audioSwitch: audioSwitch, teletextPage: teletextPage, teletextSwitch: teletextSwitch, audioDelayMs: audioDelayMs, audioDelaySwitches: audioDelaySwitches, pausedMount: pausedMount, optionCorrection: optionCorrection, sequentialOrigin: sequentialOrigin, maxConcurrentRequests: maxConcurrentRequests, heldConnection: heldConnection, declaredDuration: declaredDuration, httpHeaders: httpHeaders, deinterlaceFieldRate: deinterlaceFieldRate, assertDolbyVision: assertDolbyVision, preserveASSMarkup: preserveASSMarkup, dolbyVisionHandling: dolbyVisionHandling, record: record) + box.value = await playSmokeTest(url: url, seconds: seconds, live: live, forceSoftware: forceSoftware, softwareEscalation: softwareEscalation, nativeHLS: nativeHLS, liveIngest: liveIngest, fastZap: fastZap, liveStartImmediately: liveStartImmediately, dvrWindow: dvrWindow, subsPick: subsPick, hostCalls: hostCalls, audioStats: audioStats, seekEvery: seekEvery, seekPattern: seekPattern, seekCount: seekCount, startPosition: startPosition, frameTimes: frameTimes, presentTimes: presentTimes, servedURL: servedURL, pictureProbe: pictureProbe, pictureOrigin: pictureOrigin, nativeVideoFrameDiagnostics: nativeVideoFrameDiagnostics, nativeVideoFrameRecovery: nativeVideoFrameRecovery, sidecars: sidecars, audioSwitch: audioSwitch, teletextPage: teletextPage, teletextSwitch: teletextSwitch, audioDelayMs: audioDelayMs, audioDelaySwitches: audioDelaySwitches, pausedMount: pausedMount, optionCorrection: optionCorrection, sequentialOrigin: sequentialOrigin, maxConcurrentRequests: maxConcurrentRequests, heldConnection: heldConnection, progressiveSegments: progressiveSegments, declaredDuration: declaredDuration, httpHeaders: httpHeaders, deinterlaceFieldRate: deinterlaceFieldRate, assertDolbyVision: assertDolbyVision, preserveASSMarkup: preserveASSMarkup, dolbyVisionHandling: dolbyVisionHandling, record: record) CFRunLoopStop(CFRunLoopGetMain()) } CFRunLoopRun() @@ -453,7 +453,7 @@ private func seekIntentDrill( } @MainActor -private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: Bool = false, softwareEscalation: Bool = true, nativeHLS: Bool = false, liveIngest: Bool = false, fastZap: Bool = false, liveStartImmediately: Bool = true, dvrWindow: Double?, subsPick: String?, hostCalls: [String], audioStats: Bool, seekEvery: Double? = nil, seekPattern: [Double] = [], seekCount: Int? = nil, startPosition: Double? = nil, frameTimes: Bool = false, presentTimes: Bool = false, servedURL: Bool = false, pictureProbe: Bool = false, pictureOrigin: Double = 0, sidecars: [ExternalSubtitleTrack] = [], audioSwitch: AudioSwitchRequest? = nil, teletextPage: Int? = nil, teletextSwitch: TeletextPageSwitchRequest? = nil, audioDelayMs: Int = 0, audioDelaySwitches: [AudioDelaySwitchRequest] = [], pausedMount: Bool = false, optionCorrection: LoadOptionCorrectionRequest? = nil, sequentialOrigin: Bool = false, maxConcurrentRequests: Int? = nil, heldConnection: Bool = false, declaredDuration: Double? = nil, httpHeaders: [String: String] = [:], deinterlaceFieldRate: DeinterlaceFieldRate = .field, assertDolbyVision: Bool = false, preserveASSMarkup: Bool = false, dolbyVisionHandling: DolbyVisionHandling = .automatic, record: URL? = nil) async -> Int32 { +private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: Bool = false, softwareEscalation: Bool = true, nativeHLS: Bool = false, liveIngest: Bool = false, fastZap: Bool = false, liveStartImmediately: Bool = true, dvrWindow: Double?, subsPick: String?, hostCalls: [String], audioStats: Bool, seekEvery: Double? = nil, seekPattern: [Double] = [], seekCount: Int? = nil, startPosition: Double? = nil, frameTimes: Bool = false, presentTimes: Bool = false, servedURL: Bool = false, pictureProbe: Bool = false, pictureOrigin: Double = 0, nativeVideoFrameDiagnostics: Bool = false, nativeVideoFrameRecovery: Bool = false, sidecars: [ExternalSubtitleTrack] = [], audioSwitch: AudioSwitchRequest? = nil, teletextPage: Int? = nil, teletextSwitch: TeletextPageSwitchRequest? = nil, audioDelayMs: Int = 0, audioDelaySwitches: [AudioDelaySwitchRequest] = [], pausedMount: Bool = false, optionCorrection: LoadOptionCorrectionRequest? = nil, sequentialOrigin: Bool = false, maxConcurrentRequests: Int? = nil, heldConnection: Bool = false, progressiveSegments: Bool = false, declaredDuration: Double? = nil, httpHeaders: [String: String] = [:], deinterlaceFieldRate: DeinterlaceFieldRate = .field, assertDolbyVision: Bool = false, preserveASSMarkup: Bool = false, dolbyVisionHandling: DolbyVisionHandling = .automatic, record: URL? = nil) async -> Int32 { let engine: AetherEngine do { engine = try AetherEngine() @@ -571,6 +571,7 @@ private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: heldSourceConnection: heldConnection, declaredDurationSeconds: declaredDuration, externalSubtitles: sidecars, + progressiveSegmentDelivery: progressiveSegments, // AE#464 round 2: the reporter's mount. A host that drives transport itself loads with // autoplay off and calls play() next to its own load; a rebuild the ENGINE raises has no // such caller, which is what made a mid-play nudge settle paused and stay there. @@ -582,7 +583,9 @@ private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: // only be asked of a reporter. send_frame halves the output rate and changes nothing else. deinterlaceFieldRate: deinterlaceFieldRate, preferredDecodePath: forceSoftware ? .software : .automatic, - escalatesToSoftwarePath: softwareEscalation + escalatesToSoftwarePath: softwareEscalation, + nativeVideoFrameDiagnostics: nativeVideoFrameDiagnostics, + nativeVideoFrameRecovery: nativeVideoFrameRecovery ) // AE#629: the rescue a host used to see only as a route change. let escalationSub = engine.softwarePathEscalations.sink { event in @@ -930,8 +933,17 @@ private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: // Sodalite#104: where the playhead stood when the pause-and-hold drill parked it, so the run can // say whether it moved. var pauseHoldPlayhead: Double? + // AE#724: a resume whose clock settles behind the anchor it was loaded at. Only judged on a run + // nothing else repositions, so a drill's own seek cannot read as one. + let resumeAnchor: Double? = (startPosition ?? 0) > 0 && !live && seekEvery == nil + && hostCalls.allSatisfy { $0 == "play" } && (!pausedMount || hostCalls == ["play"]) + && audioSwitch == nil ? startPosition : nil + var resumeLowest: Double? for tick in 1...ticks { try? await Task.sleep(nanoseconds: 1_000_000_000) + if resumeAnchor != nil, tick <= 3 { + resumeLowest = min(resumeLowest ?? .infinity, engine.currentTime) + } var line = String(format: " t=%02d state=%@ phase=%@ cur=%.2f src=%.2f buf=%.2f dur=%.1f", tick, String(describing: engine.state), @@ -1483,6 +1495,11 @@ private func playSmokeTest(url: URL, seconds: Double, live: Bool, forceSoftware: return 5 } } + if let resumeAnchor, let resumeLowest, resumeLowest < resumeAnchor - 1.0 { + print(String(format: "VERDICT: resume clock fell behind its anchor (loaded at %.2fs, read %.2fs); " + + "the first sample re-anchored the session backwards", resumeAnchor, resumeLowest)) + return 2 + } if finalTime <= 3.0 { if let audioSwitch { // #337: the wedge signature. state stays .playing with a first frame on screen, so the diff --git a/Sources/aetherctl/Serve.swift b/Sources/aetherctl/Serve.swift index 0c92881b3..5e35ec03d 100644 --- a/Sources/aetherctl/Serve.swift +++ b/Sources/aetherctl/Serve.swift @@ -6,8 +6,8 @@ import AetherEngine func runServe(url: URL, dvModeAvailable: Bool, forceDVWithoutDisplay: Bool = false, dolbyVisionHandling: DolbyVisionHandling = .automatic, nativeSubsIndex: Int? = nil, startPosition: Double? = nil, - audioDelayMs: Int = 0, objectAudioRendering: ObjectAudioRendering = .off, - audioStreamIndex: Int32? = nil, iFrames: Bool = false) -> Never { + audioDelayMs: Int = 0, iFrames: Bool = false, + objectAudioRendering: ObjectAudioRendering = .off, audioStreamIndex: Int32? = nil) -> Never { EngineLog.handler = { line in let timestamp = ISO8601DateFormatter.string( from: Date(), @@ -26,6 +26,8 @@ func runServe(url: URL, dvModeAvailable: Bool, forceDVWithoutDisplay: Bool = fal if case .apac(let layout) = objectAudioRendering { flagSuffix += " [--atmos-bed \(layout.rawValue)]" } if let audioStreamIndex { flagSuffix += " [--audio-index \(audioStreamIndex)]" } if iFrames { flagSuffix += " [--iframes]" } + if case .apac(let layout) = objectAudioRendering { flagSuffix += " [--atmos-bed \(layout.rawValue)]" } + if let audioStreamIndex { flagSuffix += " [--audio-index \(audioStreamIndex)]" } print(EngineLog.redacted("aetherctl serve: \(url.absoluteString)\(flagSuffix)")) print("") diff --git a/Sources/aetherctl/main.swift b/Sources/aetherctl/main.swift index dcdadfa9d..e13751005 100644 --- a/Sources/aetherctl/main.swift +++ b/Sources/aetherctl/main.swift @@ -67,7 +67,7 @@ func printUsage() { Usage: aetherctl probe [--detect-hdr10plus] [--detect-hdr-vivid] [--detect-atmos] - aetherctl serve [--no-dv] [--force-dv] [--dv-base-layer] [--start-position S] [--iframes] [--atmos-bed 7.1.4] + aetherctl serve [--no-dv] [--force-dv] [--dv-base-layer] [--start-position S] [--iframes] [--atmos-bed 7.1.4] [--audio-index N] aetherctl validate [--no-dv] [--force-dv] [--dv-base-layer] aetherctl swdecode [--frames N] aetherctl play [--seconds N] [--live] [--no-sw-escalation] [--fast-zap] [--live-start-immediately] [--dvr-window N] [--subs ] @@ -129,8 +129,10 @@ func printUsage() { (#35/#37/#38: rapid-seek burst, wedge report, seek-event ledger) aetherctl pktdump [--at S] [--count N] [--profile playback|restartReopen|stillExtraction] (raw demuxer packet timing, before dts repair and muxing) - aetherctl bgaudio [--fg N] [--bg N] - (SW-path background audio headless on macOS; DEBUG builds only) + aetherctl bgaudio [--fg N] [--bg N] [--lose-session] + (SW-path background audio headless on macOS; DEBUG builds only. + --lose-session invalidates the VT session mid-foreground and + on entering background, as an iOS screen lock does, AE#739) aetherctl smbtest [--reads N] (SMB byte source: throughput pass + random-seek consistency; macOS) aetherctl (alias for `serve`) @@ -380,14 +382,16 @@ if first == "bgaudio" { var rest = Array(args.dropFirst(2)) let fg = takeDoubleFlag("--fg", in: 0...maxRunSeconds, from: &rest) ?? 3.0 let bg = takeDoubleFlag("--bg", in: 0...maxRunSeconds, from: &rest) ?? 6.0 + let loseSession = takeFlag("--lose-session", from: &rest) guard let urlArg = rest.first(where: { !$0.hasPrefix("--") }) else { print("ERROR: bgaudio requires a argument") - print("Usage: aetherctl bgaudio [--fg N] [--bg N] ") + print("Usage: aetherctl bgaudio [--fg N] [--bg N] [--lose-session] ") exit(64) } rest.removeAll { $0 == urlArg } rejectStrayFlags(rest, subcommand: "bgaudio") - exit(runBackgroundAudio(url: parseSourceURL(urlArg), fgSeconds: fg, bgSeconds: bg)) + exit(runBackgroundAudio(url: parseSourceURL(urlArg), fgSeconds: fg, bgSeconds: bg, + loseSession: loseSession)) } if first == "smbtest" { @@ -691,6 +695,9 @@ if first == "play" { // drain cycle. This is the knob for an origin that refuses new requests in windows: run it // against one and count the ranges in its own log, or read `conn start ... held` here. let heldConnection = takeFlag("--held-connection", from: &rest) + // LoadOptions.progressiveSegmentDelivery: serve each VOD segment while it is written. Pair it + // with a throttled origin to see the startup difference; on a fast source nothing changes. + let progressiveSegments = takeFlag("--progressive-segments", from: &rest) let declaredDuration = takeDoubleFlag("--declared-duration", from: &rest) // #311: install the software frame-time observer and read the presentation timebase, so the // per-frame boundaries and the clock a host would pace an overlay against are both observable. @@ -699,6 +706,8 @@ if first == "play" { // AE#684: print the loopback URL of every native item, so its init and segments can be fetched. let servedURL = takeFlag("--served-url", from: &rest) let pictureProbe = takeFlag("--picture-probe", from: &rest) + let nativeVideoFrameDiagnostics = takeFlag("--native-video-frame-diagnostics", from: &rest) + let nativeVideoFrameRecovery = takeFlag("--native-video-frame-recovery", from: &rest) // AE#534: the source axis's origin, for a container whose timeline does not start at zero. // The picture states a frame index, which an -output_ts_offset remux does not move. let pictureOrigin = takeDoubleFlag("--picture-origin", from: &rest) ?? 0 @@ -880,7 +889,7 @@ if first == "play" { done.wait() } exit(runPlay(url: parseSourceURL(urlArg), seconds: seconds, live: live, nativeHLS: nativeHLS, liveIngest: liveIngest, fastZap: playFastZap, liveStartImmediately: liveStartImmediately, dvrWindow: dvrWindow, subsPick: subsPick, hostCalls: hostCalls, audioStats: audioStats, seekEvery: seekEvery, seekPattern: seekPattern, seekCount: seekCount, startPosition: playStartPosition, mallocCensus: mallocCensus, forceSoftware: playForceSW, softwareEscalation: playSoftwareEscalation, - censusThresholdMB: censusThresholdMB, censusHz: censusHz, frameTimes: frameTimes, presentTimes: presentTimes, servedURL: servedURL, pictureProbe: pictureProbe, pictureOrigin: pictureOrigin, sidecars: sidecars, + censusThresholdMB: censusThresholdMB, censusHz: censusHz, frameTimes: frameTimes, presentTimes: presentTimes, servedURL: servedURL, pictureProbe: pictureProbe, pictureOrigin: pictureOrigin, nativeVideoFrameDiagnostics: nativeVideoFrameDiagnostics, nativeVideoFrameRecovery: nativeVideoFrameRecovery, sidecars: sidecars, audioSwitch: audioSwitch, teletextPage: teletextPage, teletextSwitch: teletextSwitch, audioDelayMs: audioDelayMs, audioDelaySwitches: audioDelaySwitches, @@ -888,6 +897,7 @@ if first == "play" { optionCorrection: optionCorrection, sequentialOrigin: sequentialOrigin, maxConcurrentRequests: maxConcurrentRequests, heldConnection: heldConnection, + progressiveSegments: progressiveSegments, declaredDuration: declaredDuration, httpHeaders: playHeaders, deinterlaceFieldRate: playFieldRate, @@ -987,7 +997,7 @@ if ["probe", "serve", "validate", "swdecode", "extract", "audio", "customio"].co // be read straight off the segments (ffprobe the audio and video first-packet PTS) instead of // being judged by ear. let serveAudioDelayMs = takeIntFlag("--audio-delay", from: &rest) ?? 0 - // TrueHD Atmos rendered into a speaker bed and served as APAC (LoadOptions.objectAudioRendering). + // #731: TrueHD Atmos or DTS:X rendered into a speaker bed and served as APAC (LoadOptions.objectAudioRendering). let atmosBedFlag = takeStringFlag("--atmos-bed", from: &rest) let serveObjectAudioRendering: ObjectAudioRendering if let atmosBedFlag { @@ -1019,9 +1029,10 @@ if ["probe", "serve", "validate", "swdecode", "extract", "audio", "customio"].co runServe(url: url, dvModeAvailable: dvModeAvailable, forceDVWithoutDisplay: forceDV, dolbyVisionHandling: dvHandling, nativeSubsIndex: nativeSubsIndex, startPosition: startPosition, - audioDelayMs: serveAudioDelayMs, objectAudioRendering: serveObjectAudioRendering, + audioDelayMs: serveAudioDelayMs, iFrames: serveIFrames, + objectAudioRendering: serveObjectAudioRendering, // `--audio-index` (parsed once above, shared with customio): serve that source stream. - audioStreamIndex: customAudioIndex, iFrames: serveIFrames) + audioStreamIndex: customAudioIndex) case "validate": exit(runValidate(url: url, dvModeAvailable: dvModeAvailable, forceDVWithoutDisplay: forceDV, dolbyVisionHandling: dvHandling)) diff --git a/Tests/AetherEngineTests/APACEncodePipelineTests.swift b/Tests/AetherEngineTests/APACEncodePipelineTests.swift new file mode 100644 index 000000000..15c475115 --- /dev/null +++ b/Tests/AetherEngineTests/APACEncodePipelineTests.swift @@ -0,0 +1,173 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// The spatial bridge encodes on `APACEncodePipeline`'s queue while it decodes the next chunk +/// (#731). What reaches the muxer must be what a synchronous encode on the producer thread +/// produced: the same packets, in the same order, on the same timestamps, through restarts, +/// resets and failures. +@Suite("APAC encode pipeline") +struct APACEncodePipelineTests { + + private static let layout = SpatialSpeakerLayout.l714 + private static let chunk = 2048 + + @available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) + private func makeEncoder() throws -> APACEncoder { + try APACEncoder(layout: Self.layout, bitRate: Self.layout.channelCount * 320_000) + } + + /// A different tone per channel, continuous across chunks. + private func fill(_ planes: [UnsafeMutablePointer], frames: Int, startFrame: Int) { + for (c, p) in planes.enumerated() { + for i in 0.., origin: Int64 + ) { + for k in chunks { + fill(buffer.planes, frames: Self.chunk, startFrame: k * Self.chunk) + buffer = pipeline.submit(buffer, frames: Self.chunk, position: origin + Int64(k * Self.chunk)) + } + } + + @Test("the packets are a synchronous encode's, in order, stamped from the first chunk's position") + func matchesSynchronousEncode() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let reference = try makeEncoder() + let planes = (0...allocate(capacity: Self.chunk) } + defer { planes.forEach { $0.deallocate() } } + var expected: [APACEncoder.Packet] = [] + for k in 0..<40 { + fill(planes, frames: Self.chunk, startFrame: k * Self.chunk) + expected += try reference.encode(planes: planes.map { UnsafePointer($0) }, frameCount: Self.chunk) + } + expected += try reference.flush() + + let pipeline = APACEncodePipeline(encoder: try makeEncoder(), channels: Self.layout.channelCount, + bufferFrames: Self.chunk) + var buffer = pipeline.takeInitialBuffer() + var got: [APACEncodePipeline.StampedPacket] = [] + for k in 0..<40 { + submit(pipeline, &buffer, chunks: k..<(k + 1), origin: 96_000) + got += pipeline.collect().packets + } + let finished = pipeline.finish() + got += finished.packets + #expect(finished.errors.isEmpty) + #expect(got.map(\.data) == expected.map(\.data)) + #expect(got.map(\.pts) == got.indices.map { 96_000 + Int64($0) * 1024 }) + } + + @Test("a reset drops what was queued, and the next chunk starts a run on its own position") + func resetDropsQueuedWork() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let pipeline = APACEncodePipeline(encoder: try makeEncoder(), channels: Self.layout.channelCount, + bufferFrames: Self.chunk) + var buffer = pipeline.takeInitialBuffer() + submit(pipeline, &buffer, chunks: 0..<20, origin: 0) + pipeline.reset() + submit(pipeline, &buffer, chunks: 0..<10, origin: 480_000) + let out = pipeline.finish() + + let fresh = APACEncodePipeline(encoder: try makeEncoder(), channels: Self.layout.channelCount, + bufferFrames: Self.chunk) + var freshBuffer = fresh.takeInitialBuffer() + submit(fresh, &freshBuffer, chunks: 0..<10, origin: 480_000) + #expect(out.packets.map(\.data) == fresh.finish().packets.map(\.data), "the encoder really started over") + #expect(out.errors.isEmpty) + #expect(out.packets.first?.pts == 480_000, "nothing from before the reset survives") + #expect(out.packets.map(\.pts) == out.packets.indices.map { 480_000 + Int64($0) * 1024 }) + } + + @Test("a restart ends the run with its tail, and the next run starts on the next chunk's position") + func restartStartsANewRun() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let pipeline = APACEncodePipeline(encoder: try makeEncoder(), channels: Self.layout.channelCount, + bufferFrames: Self.chunk) + var buffer = pipeline.takeInitialBuffer() + submit(pipeline, &buffer, chunks: 0..<10, origin: 0) + pipeline.restart() + submit(pipeline, &buffer, chunks: 0..<10, origin: 1_000_000) + let pts = pipeline.finish().packets.map(\.pts) + let split = try #require(pts.firstIndex(of: 1_000_000)) + // 20480 frames plus 2048 of priming, padded to whole packets. + #expect(split == Int((Double(10 * Self.chunk + 2048) / 1024).rounded(.up))) + #expect(pts[..( + _ layout: SpatialSpeakerLayout, frames: Int, startFrame: Int = 0, _ body: ([UnsafePointer]) throws -> R + ) rethrows -> R { + let planes = (0.. UnsafeMutablePointer in + let p = UnsafeMutablePointer.allocate(capacity: frames) + for i in 0.. 8) + #expect(String(bytes: cookie[4..<8], encoding: .ascii) == "dapa") + #expect(Int(cookie[0]) << 24 | Int(cookie[1]) << 16 | Int(cookie[2]) << 8 | Int(cookie[3]) == cookie.count, + "the cookie is one complete box") + #expect(encoder.leadingFrames == 2048) + #expect(APACEncoder.framesPerPacket == 1024) + } + + @Test("packets come out as fast as frames go in: priming plus input, a packet per 1024 frames, all sync") + func packetCadence() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let layout = SpatialSpeakerLayout.l714 + let encoder = try APACEncoder(layout: layout, bitRate: layout.channelCount * 320_000) + let frames = 48_000 + var packets: [APACEncoder.Packet] = [] + var fed = 0 + while fed < frames { + let n = min(2048, frames - fed) + packets += try withPlanes(layout, frames: n, startFrame: fed) { try encoder.encode(planes: $0, frameCount: n) } + fed += n + } + // With DRC off the encoder holds only its priming. A lookahead of seconds (DRC on) would leave + // this one second of input with no packets at all. + #expect(packets.count >= frames / 1024 - 2, "got \(packets.count) packets for 1 s of input") + #expect(packets.allSatisfy { $0.isSync }) + #expect(packets.allSatisfy { !$0.data.isEmpty }) + let tail = try encoder.flush() + let total = packets.count + tail.count + let expected = (frames + encoder.leadingFrames + 1023) / 1024 + #expect(abs(total - expected) <= 1, "\(total) packets in total, \(expected) expected") + #expect(try encoder.flush().isEmpty, "a second flush has nothing left") + } + + @Test("after a reset the encoder starts over and keeps going") + func resetStartsOver() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let layout = SpatialSpeakerLayout.l512 + let encoder = try APACEncoder(layout: layout, bitRate: layout.channelCount * 320_000) + _ = try withPlanes(layout, frames: 8192) { try encoder.encode(planes: $0, frameCount: 8192) } + _ = try encoder.flush() + encoder.reset() + let again = try withPlanes(layout, frames: 8192) { try encoder.encode(planes: $0, frameCount: 8192) } + #expect(again.count >= 4) + #expect(again.first?.isSync == true) + } + + @Test("an input longer than the converter's buffer is fed in slices, nothing dropped") + func longInputIsSliced() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let layout = SpatialSpeakerLayout.l714 + let encoder = try APACEncoder(layout: layout, bitRate: layout.channelCount * 320_000, maxInputFrames: 4096) + let frames = 4096 * 5 + 300 + let packets = try withPlanes(layout, frames: frames) { try encoder.encode(planes: $0, frameCount: frames) } + let total = packets.count + (try encoder.flush()).count + #expect(abs(total - (frames + encoder.leadingFrames + 1023) / 1024) <= 1) + } + + @Test("encode after flush throws instead of swallowing the input") + func encodeAfterFlushThrows() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let layout = SpatialSpeakerLayout.l512 + let encoder = try APACEncoder(layout: layout, bitRate: layout.channelCount * 320_000) + _ = try withPlanes(layout, frames: 2048) { try encoder.encode(planes: $0, frameCount: 2048) } + _ = try encoder.flush() + #expect(throws: APACEncoder.EncoderError.self) { + try withPlanes(layout, frames: 1000) { try encoder.encode(planes: $0, frameCount: 1000) } + } + } +} diff --git a/Tests/AetherEngineTests/APACSampleEntryTests.swift b/Tests/AetherEngineTests/APACSampleEntryTests.swift index 45f95f41e..64b68d9e2 100644 --- a/Tests/AetherEngineTests/APACSampleEntryTests.swift +++ b/Tests/AetherEngineTests/APACSampleEntryTests.swift @@ -41,8 +41,8 @@ struct APACSampleEntryTests { + box("minf", box("smhd", [0, 0, 0, 0, 0, 0, 0, 0]) + box("stbl", box("stsd", [0, 0, 0, 0, 0, 0, 0, 1] + alac) + box("stts", [0, 0, 0, 0, 0, 0, 0, 0]))))) let videoTrak = box("trak", box("mdia", box("hdlr", [0, 0, 0, 0, 0, 0, 0, 0] + Array("vide".utf8) + [0]))) - let initBytes = Data(box("ftyp", Array("iso5".utf8) + [0, 0, 0, 1]) + box("moov", box("mvhd", [UInt8](repeating: 0, count: 100)) + videoTrak + soundTrak) - + box("mvex", [])) + let initBytes = Data(box("ftyp", Array("iso5".utf8) + [0, 0, 0, 1]) + + box("moov", box("mvhd", [UInt8](repeating: 0, count: 100)) + videoTrak + soundTrak + box("mvex", []))) let entry = APACSampleEntry.sampleEntry(magicCookie: Data(box("dapa", [UInt8](repeating: 7, count: 120))), sampleRate: 48_000) let out = try #require(APACSampleEntry.replacingSoundSampleEntry(in: initBytes, with: entry)) @@ -56,9 +56,11 @@ struct APACSampleEntryTests { return out } let top = children(0, b.count) - #expect(top.map(\.0) == ["ftyp", "moov", "mvex"]) + #expect(top.map(\.0) == ["ftyp", "moov"]) let moov = top[1] - let traks = children(moov.1 + 8, moov.2).filter { $0.0 == "trak" } + let inMoov = children(moov.1 + 8, moov.2) + #expect(inMoov.map(\.0) == ["mvhd", "trak", "trak", "mvex"]) + let traks = inMoov.filter { $0.0 == "trak" } let sound = traks[1] let mdia = children(sound.1 + 8, sound.2).first { $0.0 == "mdia" }! let minf = children(mdia.1 + 8, mdia.2).first { $0.0 == "minf" }! @@ -69,6 +71,17 @@ struct APACSampleEntryTests { #expect(Data(b[entries[0].1..= 4) #expect(again.first?.isSync == true) } + + @Test("the muxer installs an override, forwards an init without one untouched, and survives one with no sound track") + func muxerInstallsOverride() { + let entry = APACSampleEntry.sampleEntry(magicCookie: Data(box("dapa", [1, 2, 3, 4])), sampleRate: 48_000) + let videoOnly = Data(box("ftyp", Array("iso5".utf8) + [0, 0, 0, 1]) + + box("moov", box("trak", box("mdia", box("hdlr", [0, 0, 0, 0, 0, 0, 0, 0] + Array("vide".utf8) + [0]))))) + #expect(MP4SegmentMuxer.installingSoundSampleEntry(nil, in: videoOnly) == videoOnly) + #expect(MP4SegmentMuxer.installingSoundSampleEntry(entry, in: videoOnly) == videoOnly) + } } diff --git a/Tests/AetherEngineTests/AVFoundationOffMainTests.swift b/Tests/AetherEngineTests/AVFoundationOffMainTests.swift index 17a9ae99d..b1e390bff 100644 --- a/Tests/AetherEngineTests/AVFoundationOffMainTests.swift +++ b/Tests/AetherEngineTests/AVFoundationOffMainTests.swift @@ -20,7 +20,7 @@ struct AVFoundationOffMainTests { } @Test("a blocked body must not block the main actor", .timeLimit(.minutes(3))) - func blockedBodyKeepsMainActorResponsive() async { + func blockedBodyKeepsMainActorResponsive() async throws { let queue = DispatchQueue(label: "test.avfread.stall") let release = DispatchSemaphore(value: 0) let player = AVPlayer() @@ -39,7 +39,7 @@ struct AVFoundationOffMainTests { } finished.set(true) } - for _ in 0..<5 { try? await Task.sleep(for: .milliseconds(20)) } + for _ in 0..<5 { try await Task.sleep(for: .milliseconds(20)) } #expect(finished.get() == false) release.signal() diff --git a/Tests/AetherEngineTests/AVIOReaderAbortableWaitTests.swift b/Tests/AetherEngineTests/AVIOReaderAbortableWaitTests.swift index 541a4f7d7..fd25925b6 100644 --- a/Tests/AetherEngineTests/AVIOReaderAbortableWaitTests.swift +++ b/Tests/AetherEngineTests/AVIOReaderAbortableWaitTests.swift @@ -7,6 +7,7 @@ import Foundation /// stalled chunk read froze the FrameExtractor's serial decode queue and pinned the /// scrub-preview image. The abortable wait must bail promptly when a read is /// superseded (deadline/closed), bounded by a small budget instead of 35s. +@Suite(.offCooperativePool) struct AVIOReaderAbortableWaitTests { @Test("awaitSignal returns .signaled when the semaphore fires") diff --git a/Tests/AetherEngineTests/AudioBridgeLiveBytesTests.swift b/Tests/AetherEngineTests/AudioBridgeLiveBytesTests.swift index 0a8bc6e1e..119300fac 100644 --- a/Tests/AetherEngineTests/AudioBridgeLiveBytesTests.swift +++ b/Tests/AetherEngineTests/AudioBridgeLiveBytesTests.swift @@ -82,6 +82,7 @@ struct AudioBridgeLiveBytesTests { } } poller.start() + while tally.snapshot.polls == 0 { usleep(1000) } var produced = 0 for round in 0..<40 { diff --git a/Tests/AetherEngineTests/AudioLanguageSelectionTests.swift b/Tests/AetherEngineTests/AudioLanguageSelectionTests.swift index d4c45566b..7c3cc3dd7 100644 --- a/Tests/AetherEngineTests/AudioLanguageSelectionTests.swift +++ b/Tests/AetherEngineTests/AudioLanguageSelectionTests.swift @@ -1,5 +1,6 @@ import Testing import Foundation +import AetherLibavcodec @testable import AetherEngine /// Issue #72: the engine resolves the first-frame audio track from its single internal probe, @@ -81,4 +82,98 @@ struct AudioLanguageSelectionTests { #expect(AetherEngine.selectAudioIndex( tracks: tracks, override: nil, preferredLanguages: ["ja"]) == 0) } + + // MARK: - #731: TrueHD Atmos and DTS:X win within a language when object rendering is on + + private func audio(_ id: Int, _ lang: String?, codec: String, atmos: Bool = false, commentary: Bool = false, + profile: Int32? = nil) -> TrackInfo { + let codecID = codec == "dca" ? AV_CODEC_ID_DTS : AV_CODEC_ID_TRUEHD + return TrackInfo(id: id, name: "a\(id)", codec: codec, language: lang, channels: 8, isDefault: id == 1, + isCommentary: commentary, + profile: atmos ? VideoStreamFormat.profileName(codecID: AV_CODEC_ID_TRUEHD, profile: AV_PROFILE_TRUEHD_ATMOS) + : profile.flatMap { VideoStreamFormat.profileName(codecID: codecID, profile: $0) }) + } + + @Test("with rendering on, DTS:X wins within its language like TrueHD Atmos; plain DTS-HD MA does not") + func dtsxWinsWithinLanguage() { + // `dca` is what the probe reports for DTS: TrackInfo.codec is the decoder's name. + let tracks = [audio(1, "eng", codec: "ac3"), audio(2, "eng", codec: "dca", profile: AV_PROFILE_DTS_HD_MA_X), + audio(3, "ger", codec: "dca", profile: AV_PROFILE_DTS_HD_MA_X)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 2) + // Independence Day: no track flagged default, the probe's best stream an AC-3 commentary. + let imax = [audio(1, "eng", codec: "ac3"), audio(2, "eng", codec: "dca", profile: AV_PROFILE_DTS_HD_MA_X_IMAX)] + #expect(AetherEngine.selectAudioIndex(tracks: imax, override: nil, preferredLanguages: [], + prefersObjectAudio: true, defaultIndex: 1) == 2) + // A plain label may still be DTS:X, but only the label can be ranked before playback. + let plain = [audio(1, "eng", codec: "ac3"), audio(2, "eng", codec: "dca", profile: AV_PROFILE_DTS_HD_MA)] + #expect(AetherEngine.selectAudioIndex(tracks: plain, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 1) + let commentary = [audio(1, "eng", codec: "ac3"), + audio(2, "eng", codec: "dca", commentary: true, profile: AV_PROFILE_DTS_HD_MA_X)] + #expect(AetherEngine.selectAudioIndex(tracks: commentary, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 1) + } + + @Test("with rendering on, TrueHD Atmos beats DTS and plain TrueHD of the preferred language") + func trueHDAtmosWinsWithinLanguage() { + let tracks = [audio(1, "eng", codec: "dts"), audio(2, "eng", codec: "truehd", atmos: true), + audio(3, "ger", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 2) + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["en"]) == 1, + "rendering off keeps the container order") + let plain = [audio(1, "eng", codec: "truehd"), audio(2, "eng", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: plain, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 2) + } + + @Test("it never crosses a language, and an override still wins") + func neverAcrossLanguage() { + let tracks = [audio(1, "ger", codec: "dts"), audio(2, "eng", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["de"], + prefersObjectAudio: true) == 1) + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: 1, preferredLanguages: ["en"], + prefersObjectAudio: true) == 1) + } + + @Test("without a language preference it replaces the default track with TrueHD Atmos in that track's language") + func replacesDefaultInItsLanguage() { + let tracks = [audio(1, "eng", codec: "dts"), audio(2, "ger", codec: "truehd", atmos: true), + audio(3, "eng", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: [], + prefersObjectAudio: true, defaultIndex: 1) == 3) + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: [], + prefersObjectAudio: false, defaultIndex: 1) == nil) + let untagged = [audio(1, nil, codec: "dts"), audio(2, nil, codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: untagged, override: nil, preferredLanguages: [], + prefersObjectAudio: true, defaultIndex: 1) == nil, + "no language to compare, so the default stays") + } + + @Test("a commentary in TrueHD Atmos does not displace the film") + func commentaryStaysBehind() { + let tracks = [audio(1, "eng", codec: "dts"), audio(2, "eng", codec: "truehd", atmos: true, commentary: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["en"], + prefersObjectAudio: true) == 1) + } + + @Test("a preference nothing matches still lets the default's language take its TrueHD Atmos track") + func unmatchedPreferenceFallsBackToDefaultLanguage() { + // Sodalite always sends the device locale; on a German box a film with only English audio + // matches nothing and plays its default track. + let tracks = [audio(1, "eng", codec: "dts"), audio(2, "eng", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: ["de"], + prefersObjectAudio: true, defaultIndex: 1) == 2) + } + + @Test("the fallback keeps the dub: a region both tags state and disagree on is another track") + func fallbackKeepsTheDub() { + let tracks = [audio(1, "es-ES", codec: "dts"), audio(2, "es-419", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: tracks, override: nil, preferredLanguages: [], + prefersObjectAudio: true, defaultIndex: 1) == nil) + let same = [audio(1, "es-ES", codec: "dts"), audio(2, "es", codec: "truehd", atmos: true)] + #expect(AetherEngine.selectAudioIndex(tracks: same, override: nil, preferredLanguages: [], + prefersObjectAudio: true, defaultIndex: 1) == 2) + } } diff --git a/Tests/AetherEngineTests/AudioOutputFlushEpochTests.swift b/Tests/AetherEngineTests/AudioOutputFlushEpochTests.swift index 9efda83d7..65e201197 100644 --- a/Tests/AetherEngineTests/AudioOutputFlushEpochTests.swift +++ b/Tests/AetherEngineTests/AudioOutputFlushEpochTests.swift @@ -113,9 +113,8 @@ struct AudioOutputFlushEpochTests { } feed.start() - let finished = try await waitFor(upTo: .seconds(10)) { returned.isSet } - #expect(finished, "the feed thread is parked on a lock it holds itself") - guard finished else { return } + // A feed thread parked on a lock it holds itself never returns; the time limit reports that. + try await waitFor { returned.isSet } try await waitFor { output.automaticFlushCount == 1 } #expect(output.automaticFlushCount == 1, "the flush still happens, serialized with enqueueing") diff --git a/Tests/AetherEngineTests/BackgroundKeepaliveTests.swift b/Tests/AetherEngineTests/BackgroundKeepaliveTests.swift index 451d8041a..506c76248 100644 --- a/Tests/AetherEngineTests/BackgroundKeepaliveTests.swift +++ b/Tests/AetherEngineTests/BackgroundKeepaliveTests.swift @@ -29,24 +29,34 @@ struct BackgroundKeepaliveTests { @Test("audio backend is always spared") func audioBackendSpared() { - #expect(AetherEngine.backgroundAction(isAudioBackend: true, hasSoftwareHost: false, keepVideoAlive: false, pipActive: false, state: .playing) == .doNothing) - #expect(AetherEngine.backgroundAction(isAudioBackend: true, hasSoftwareHost: true, keepVideoAlive: true, pipActive: false, state: .playing) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: true, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .playing) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: true, hasSoftwareHost: true, softwareHostHasAudio: true, keepVideoAlive: true, pipActive: false, state: .playing) == .doNothing) } @Test("native keepalive leaves the session alone") func nativeKeepaliveLeavesAlone() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, keepVideoAlive: true, pipActive: false, state: .playing) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: true, pipActive: false, state: .playing) == .doNothing) } @Test("software host kept alive enters audio-only") func softwareEntersAudioOnly() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, keepVideoAlive: true, pipActive: false, state: .playing) == .enterSoftwareAudioOnly) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: true, keepVideoAlive: true, pipActive: false, state: .playing) == .enterSoftwareAudioOnly) + } + + /// AE#739: audio-only mode paces the demux loop on the audio renderer, so a source without audio + /// raced to EOF in the background and parked its clock at end of media. + @Test("software host without audio is released instead of entering audio-only") + func softwareWithoutAudioTearsDown() { + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: false, keepVideoAlive: true, pipActive: false, state: .playing) == .teardownVideo) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: false, keepVideoAlive: true, pipActive: false, state: .paused) == .teardownVideo) + // A PiP window still renders its frames. + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: false, keepVideoAlive: true, pipActive: true, state: .playing) == .doNothing) } @Test("teardown video when not kept alive and playing or paused") func teardownWhenNotKeptAlive() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, keepVideoAlive: false, pipActive: false, state: .playing) == .teardownVideo) - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, keepVideoAlive: false, pipActive: false, state: .paused) == .teardownVideo) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .playing) == .teardownVideo) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .paused) == .teardownVideo) } /// Audit CORE-2: a load or seek in flight DOES have a pipeline (loopback server, AVIO connection, @@ -55,15 +65,15 @@ struct BackgroundKeepaliveTests { /// background and cross the suspension whole. @Test("a load or seek in flight is not torn down mid-flight, the decision is owed until it settles") func loadOrSeekInFlightOwesTheDecision() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, keepVideoAlive: false, pipActive: false, state: .loading) == .doNothing) - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, keepVideoAlive: false, pipActive: false, state: .seeking) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .loading) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .seeking) == .doNothing) #expect(AetherEngine.backgroundActionIsOwed(state: .loading)) #expect(AetherEngine.backgroundActionIsOwed(state: .seeking)) } @Test("a settled or idle session owes nothing") func settledStatesOweNothing() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, keepVideoAlive: false, pipActive: false, state: .idle) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: false, softwareHostHasAudio: true, keepVideoAlive: false, pipActive: false, state: .idle) == .doNothing) for state: PlaybackState in [.idle, .playing, .paused, .ended, .error("x")] { #expect(!AetherEngine.backgroundActionIsOwed(state: state)) } @@ -86,11 +96,11 @@ struct BackgroundKeepaliveTests { @Test("software host kept alive WITH PiP keeps video (the window needs frames)") func softwareKeepsVideoInPiP() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, keepVideoAlive: true, pipActive: true, state: .playing) == .doNothing) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: true, keepVideoAlive: true, pipActive: true, state: .playing) == .doNothing) } @Test("software host kept alive WITHOUT PiP still drops to audio-only") func softwareAudioOnlyWithoutPiP() { - #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, keepVideoAlive: true, pipActive: false, state: .playing) == .enterSoftwareAudioOnly) + #expect(AetherEngine.backgroundAction(isAudioBackend: false, hasSoftwareHost: true, softwareHostHasAudio: true, keepVideoAlive: true, pipActive: false, state: .playing) == .enterSoftwareAudioOnly) } } diff --git a/Tests/AetherEngineTests/BlockingWorkTests.swift b/Tests/AetherEngineTests/BlockingWorkTests.swift new file mode 100644 index 000000000..82ec7d574 --- /dev/null +++ b/Tests/AetherEngineTests/BlockingWorkTests.swift @@ -0,0 +1,77 @@ +import Foundation +import Testing +@testable import AetherEngine + +@Suite(.timeLimit(.minutes(1))) +struct BlockingWorkTests { + private static func currentQueueLabel() -> String { + String(cString: __dispatch_queue_get_label(nil)) + } + + @Test("Blocking work runs off the cooperative pool, before and after an await") + func runsOffThePool() async { + let labels = await BlockingWork.detached(priority: .userInitiated) { () async -> [String] in + let before = Self.currentQueueLabel() + await Task.yield() + return [before, Self.currentQueueLabel()] + }.value + #expect(labels.allSatisfy { !$0.contains("cooperative") }, "ran on \(labels)") + } + + // More blocked jobs than the pool has threads: on the pool the last waiter could never + // start, here every one of them is parked at once. + @Test("Blocked jobs do not hold the cooperative pool") + func blockedJobsLeaveThePoolFree() async throws { + let count = ProcessInfo.processInfo.activeProcessorCount + 2 + let gate = ProbeTestGate() + let parked = ProbeTestBox(0) + let tasks = (0.. Int in throw Refused() } + await #expect(throws: Refused.self) { try await task.value } + } + + // Comments may name it; code may not. `BlockingWork.swift` is the one place that calls it. + @Test("No engine source creates a detached task on the cooperative pool") + func noBareDetachedTasks() throws { + let sources = URL(fileURLWithPath: #filePath) + .deletingLastPathComponent() + .deletingLastPathComponent() + .deletingLastPathComponent() + .appendingPathComponent("Sources/AetherEngine") + let files = try #require(FileManager.default.enumerator(at: sources, includingPropertiesForKeys: nil)) + var offenders: [String] = [] + for case let url as URL in files where url.pathExtension == "swift" && url.lastPathComponent != "BlockingWork.swift" { + let lines = try String(contentsOf: url, encoding: .utf8).components(separatedBy: .newlines) + for (index, line) in lines.enumerated() { + let code = line.components(separatedBy: "//").first ?? "" + if code.contains("Task.detached") { offenders.append("\(url.lastPathComponent):\(index + 1)") } + } + } + #expect(offenders.isEmpty, "use BlockingWork.detached: \(offenders)") + } + + @Test("Job priorities map onto the matching GCD class") + @available(visionOS 2, *) + func priorityMapping() { + #expect(BlockingExecutor.qos(for: JobPriority(rawValue: TaskPriority.userInitiated.rawValue)) == .userInitiated) + #expect(BlockingExecutor.qos(for: JobPriority(rawValue: TaskPriority.utility.rawValue)) == .utility) + #expect(BlockingExecutor.qos(for: JobPriority(rawValue: TaskPriority.background.rawValue)) == .background) + #expect(BlockingExecutor.qos(for: JobPriority(rawValue: 0)) == .default) + } +} diff --git a/Tests/AetherEngineTests/BluRayEPMapSeekTests.swift b/Tests/AetherEngineTests/BluRayEPMapSeekTests.swift new file mode 100644 index 000000000..88b5d48dc --- /dev/null +++ b/Tests/AetherEngineTests/BluRayEPMapSeekTests.swift @@ -0,0 +1,240 @@ +import Foundation +import Testing +import AetherLibavcodec +@testable import AetherEngine + +/// Seeking a Blu-ray title by its clips' EP maps (`CLPIParser`, `DiscSeekTable`) instead of searching +/// by timestamp, which cannot tell apart clips that run their clocks over the same range. +@Suite("Blu-ray EP-map seek", .offCooperativePool) +struct BluRayEPMapSeekTests { + + // MARK: - Fixtures + + private static func be16(_ v: Int) -> [UInt8] { [UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] } + private static func be32(_ v: Int) -> [UInt8] { + [UInt8((v >> 24) & 0xff), UInt8((v >> 16) & 0xff), UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] + } + + /// A CLPI whose EP map holds `streams`, each a PID and its entries. Entries are encoded one coarse + /// entry per fine entry, so `pts45k` must be a multiple of 256 (the map's own precision). + static func clpi(_ streams: [(pid: Int, entries: [CLPIEntryPoint])]) -> [UInt8] { + let cpiOffset = 40 + var tables: [[UInt8]] = [] + for stream in streams { + var coarse: [UInt8] = [] + var fine: [UInt8] = [] + for (i, entry) in stream.entries.enumerated() { + let ptsCoarse = Int(entry.pts45k >> 19) << 1 + coarse += be32((i << 14) | ptsCoarse) + coarse += be32(Int(entry.spn) & ~0x1FFFF) + let ptsFine = Int(entry.pts45k >> 8) & 0x7FF + fine += be32((ptsFine << 17) | (Int(entry.spn) & 0x1FFFF)) + } + tables.append(be32(4 + coarse.count) + coarse + fine) + } + // The EP map: reserved, stream count, 12 bytes per stream, then the stream tables. + var epMap: [UInt8] = [0, UInt8(streams.count)] + var start = 2 + 12 * streams.count + for (stream, table) in zip(streams, tables) { + let packed = (UInt64(stream.entries.count) << 34) | (UInt64(stream.entries.count) << 16) + | (UInt64(start) >> 16) + epMap += be16(stream.pid) + epMap += be32(Int(packed >> 32)) + be32(Int(packed & 0xFFFF_FFFF)) + epMap += be16(start & 0xFFFF) + start += table.count + } + epMap += tables.flatMap { $0 } + let cpi = be32(2 + epMap.count) + [0x00, 0x01] + epMap + var out: [UInt8] = Array("HDMV0200".utf8) + out += be32(0); out += be32(0); out += be32(cpiOffset); out += be32(0); out += be32(0) + out += [UInt8](repeating: 0, count: cpiOffset - out.count) + return out + cpi + } + + static func mpls(_ clips: [(id: String, inT: Int, outT: Int)]) -> [UInt8] { + var items: [UInt8] = [] + for clip in clips { + var body: [UInt8] = [] + body += Array(clip.id.utf8); body += Array("M2TS".utf8); body += be16(0); body.append(0) + body += be32(clip.inT); body += be32(clip.outT); body += [UInt8](repeating: 0, count: 8) + items += be16(body.count); items += body + } + var playlist: [UInt8] = [] + playlist += be32(0); playlist += be16(0); playlist += be16(clips.count); playlist += be16(0) + playlist += items + var out: [UInt8] = Array("MPLS0200".utf8) + out += be32(40); out += be32(0) + out += [UInt8](repeating: 0, count: 40 - out.count) + return out + playlist + } + + /// The tiny 8 s transport stream as an `.m2ts`: every 188-byte packet behind a 4-byte header, so the + /// source packet number of packet `n` is `n`. + static var tinyM2TS: [UInt8] { + let ts = [UInt8](TinyTransportStreamFixture.data) + return stride(from: 0, to: ts.count, by: 188).flatMap { [0, 0, 0, 0] + ts[$0..<$0 + 188] } + } + + /// The stream's video keyframes: one per second from 1.4 s, at these packets (read off the fixture). + static let keyframes: [(seconds: Double, packet: UInt32)] = [ + (1.4, 3), (2.4, 10), (3.4, 14), (4.4, 18), (5.4, 22), (6.4, 26), (7.4, 30), (8.4, 34), + ] + + /// The EP map for those keyframes, at the map's 256-tick precision. + static var tinyEntries: [CLPIEntryPoint] { + keyframes.map { CLPIEntryPoint(pts45k: UInt64($0.seconds * 45000) / 256 * 256, spn: $0.packet) } + } + + // MARK: - CLPI + + @Test("the EP map's coarse and fine entries combine into each keyframe's time and packet") + func parsesEntryPoints() { + let entries = [CLPIEntryPoint(pts45k: 63_232, spn: 3), + CLPIEntryPoint(pts45k: 900_096, spn: 131_075), // past the fine field's 17 bits + CLPIEntryPoint(pts45k: 27_000_064, spn: 2_000_000)] + #expect(CLPIParser.entryPoints(Self.clpi([(pid: 0x1011, entries: entries)])) == entries) + } + + @Test("the primary video PID's map wins over another stream's") + func primaryVideoMapWins() { + let base = [CLPIEntryPoint(pts45k: 45_056, spn: 10)] + let enhancement = [CLPIEntryPoint(pts45k: 45_056, spn: 99)] + #expect(CLPIParser.entryPoints(Self.clpi([(pid: 0x1015, entries: enhancement), + (pid: 0x1011, entries: base)])) == base) + } + + @Test("a file that is not a readable CLPI has no entry points") + func malformedCLPI() { + let good = Self.clpi([(pid: 0x1011, entries: Self.tinyEntries)]) + #expect(CLPIParser.entryPoints([]).isEmpty) + #expect(CLPIParser.entryPoints(Array("MPLS0200".utf8) + good.dropFirst(8)).isEmpty) + #expect(CLPIParser.entryPoints(Array(good.prefix(good.count - 5))).isEmpty) + #expect(CLPIParser.entryPoints(Self.clpi([])).isEmpty) + } + + // MARK: - The table + + /// Two clips that both run their clock from 11.6 s, 6149.6 s and 388 s long: the shape of a real + /// two-clip UHD title a timestamp seek could not land in. + static let overlappingClips = DiscSeekTable(clips: [ + .init(concatByteStart: 0, cumulativeBeforeSec: 0, inTimeSec: 11.6, + entries: (0..<6150).map { CLPIEntryPoint(pts45k: UInt64((11.6 + Double($0)) * 45000), spn: UInt32($0 * 1000)) }), + .init(concatByteStart: 50_000_000_000, cumulativeBeforeSec: 6149.6, inTimeSec: 11.6, + entries: (0..<388).map { CLPIEntryPoint(pts45k: UInt64((11.6 + Double($0)) * 45000), spn: UInt32($0 * 1000)) }), + ]) + + @Test("folded title time picks the clip, and the clip's own clock picks the keyframe") + func keyframeLookupAcrossOverlappingClips() throws { + let table = Self.overlappingClips + let inFirst = try #require(table.keyframe(forSourceSeconds: 11.6 + 3000.5, base0Sec: 11.6)) + #expect(inFirst.clip == 0) + #expect(abs(inFirst.keyframeSec - (11.6 + 3000)) < 0.001) + #expect(inFirst.offset == 3000 * 1000 * 192) + + let inSecond = try #require(table.keyframe(forSourceSeconds: 11.6 + 6149.6 + 100.2, base0Sec: 11.6)) + #expect(inSecond.clip == 1) + #expect(abs(inSecond.keyframeSec - (11.6 + 100)) < 0.001) + #expect(inSecond.offset == 50_000_000_000 + 100 * 1000 * 192) + } + + @Test("before clip 0's base is read, its in_time stands in for it") + func inTimeStandsInForAnUnreadBase() throws { + let hit = try #require(Self.overlappingClips.keyframe(forSourceSeconds: 11.6 + 42.5, base0Sec: .nan)) + #expect(hit.clip == 0) + #expect(abs(hit.keyframeSec - (11.6 + 42)) < 0.001) + } + + @Test("a target before the first keyframe lands on the first one") + func targetBeforeFirstKeyframe() throws { + let hit = try #require(Self.overlappingClips.keyframe(forSourceSeconds: 0, base0Sec: 11.6)) + #expect(hit.clip == 0) + #expect(hit.offset == 0) + } + + @Test("a table is built only when every clip has a map, and reads a repeated clip once") + func buildingTheTable() { + let title = DiscTitle(id: 0, durationTicks: 2 * 360_000, bdClipIDs: ["00001", "00002", "00001"], + bdClipCumulativeBeforeTicks: [0, 360_000, 720_000], + bdClipInTimes: [63_000, 63_000, 63_000]) + let resolved: [(item: Int, clip: String, byteStart: Int64)] = [(0, "00001", 0), (1, "00002", 6912), (2, "00001", 13824)] + let map = Self.clpi([(pid: 0x1011, entries: Self.tinyEntries)]) + var reads: [String] = [] + let table = DiscReader.buildSeekTable(title: title, resolved: resolved) { clip in + reads.append(clip) + return map + } + #expect(table?.clips.map(\.concatByteStart) == [0, 6912, 13824]) + #expect(table?.clips.map(\.cumulativeBeforeSec) == [0, 8, 16]) + #expect(reads == ["00001", "00002"]) + + let partial = DiscReader.buildSeekTable(title: title, resolved: resolved) { $0 == "00002" ? nil : map } + #expect(partial == nil) + let noInTimes = DiscTitle(id: 0, durationTicks: 1, bdClipIDs: ["00001"]) + #expect(DiscReader.buildSeekTable(title: noInTimes, resolved: [(0, "00001", 0)]) { _ in map } == nil) + } + + // MARK: - Through the demuxer + + static func image() -> Data { + UDFFixture.make(mplsBytes: mpls([(id: "00001", inT: 63_000, outT: 63_000 + 8 * 45_000)]), + m2tsBytes: tinyM2TS, + clpiBytes: clpi([(pid: 0x1011, entries: tinyEntries)])) + } + + @Test("recognizing an image reads its clips' CLPI into the title's seek table") + func recognitionBuildsTheTable() throws { + let info = try #require(try DiscReader.wrap(DataIOReader(data: Self.image()))) + let table = try #require(info.seekTable) + #expect(table.clips.count == 1) + #expect(table.clips[0].entries == Self.tinyEntries) + #expect(table.clips[0].inTimeSec == 1.4) + } + + @Test("an image without CLIPINF has no table, and seeks as before") + func noCLIPINFNoTable() throws { + let image = UDFFixture.make(mplsBytes: Self.mpls([(id: "00001", inT: 63_000, outT: 423_000)]), + m2tsBytes: Self.tinyM2TS) + #expect(try DiscReader.wrap(DataIOReader(data: image))?.seekTable == nil) + } + + static func folder(withCLPI: Bool) -> BluRayFolderTests.MemoryFolder { + var files: [(String, Data)] = [ + ("BDMV/index.bdmv", Data([0x49, 0x4E, 0x44, 0x58])), + ("BDMV/PLAYLIST/00800.mpls", Data(mpls([(id: "00001", inT: 63_000, outT: 63_000 + 8 * 45_000)]))), + ("BDMV/STREAM/00001.m2ts", Data(tinyM2TS)), + ] + if withCLPI { files.append(("BDMV/CLIPINF/00001.clpi", Data(clpi([(pid: 0x1011, entries: tinyEntries)])))) } + return BluRayFolderTests.MemoryFolder(files) + } + + @Test("a Blu-ray folder reads its clips' CLPI into the seek table too") + func folderBuildsTheTable() throws { + let info = try #require(DiscReader.wrapBluRayFolder(Self.folder(withCLPI: true), selectTitleID: nil)) + let table = try #require(info.seekTable) + #expect(table.clips.map(\.entries) == [Self.tinyEntries]) + #expect(DiscReader.wrapBluRayFolder(Self.folder(withCLPI: false), selectTitleID: nil)?.seekTable == nil) + } + + @Test("a seek goes to the keyframe's byte, and the first picture read is that keyframe", arguments: [ + (target: 5.0, keyframe: 4.4), (target: 2.4, keyframe: 2.4), (target: 8.9, keyframe: 8.4), (target: 1.0, keyframe: 1.4), + ]) + func seekLandsOnTheKeyframe(target: Double, keyframe: Double) throws { + let capture = EngineLogCapture() + defer { capture.end() } + let demuxer = Demuxer() + try demuxer.open(reader: DataIOReader(data: Self.image())) + defer { demuxer.close() } + let video = demuxer.videoStreamIndex + #expect(demuxer.seekBounded(to: target, timeout: 5)) + var first: Double? + while first == nil, let packet = try demuxer.readPacket() { + var owned: UnsafeMutablePointer? = packet + defer { trackedPacketFree(&owned) } + guard packet.pointee.stream_index == video, packet.pointee.pts != Int64.min else { continue } + first = Double(packet.pointee.pts) / 90000 + } + let landed = try #require(first) + #expect(abs(landed - keyframe) < 0.01) + #expect(!capture.matching(String(format: "EP map seek: source=%.3fs", target)).isEmpty) + } +} diff --git a/Tests/AetherEngineTests/BluRayFolderTests.swift b/Tests/AetherEngineTests/BluRayFolderTests.swift new file mode 100644 index 000000000..a0a5166fe --- /dev/null +++ b/Tests/AetherEngineTests/BluRayFolderTests.swift @@ -0,0 +1,359 @@ +import Foundation +import Testing +@testable import AetherEngine + +/// A Blu-ray served as a folder (`DiscDirectoryReader`) rather than an image: recognition, clip assembly, +/// the concatenating reader, and the same over HTTP and through the public probe. +@Suite("Blu-ray folder sources", .offCooperativePool) +struct BluRayFolderTests { + + // MARK: - Fixtures + + /// A folder held in memory. Records every file it opens, so a test can tell what recognition read. + final class MemoryFolder: DiscDirectoryReader, @unchecked Sendable { + let files: [String: Data] + let order: [String] + let preferredPlaylist: String? + private let lock = NSLock() + private var opened: [String] = [] + + init(_ files: [(String, Data)], preferredPlaylist: String? = nil) { + self.files = Dictionary(files, uniquingKeysWith: { first, _ in first }) + self.order = files.map(\.0) + self.preferredPlaylist = preferredPlaylist + } + + var openedPaths: [String] { lock.withLock { opened } } + var discFiles: [(path: String, size: Int64)] { order.map { ($0, Int64(files[$0]!.count)) } } + + func openDiscFile(_ path: String) -> IOReader? { + guard let key = order.first(where: { $0.caseInsensitiveCompare(path) == .orderedSame }) else { return nil } + lock.withLock { opened.append(key) } + return DataIOReader(data: files[key]!) + } + + func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { -1 } + func seek(offset: Int64, whence: Int32) -> Int64 { -1 } + func close() {} + } + + private static func be16(_ v: Int) -> [UInt8] { [UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] } + private static func be32(_ v: Int) -> [UInt8] { + [UInt8((v >> 24) & 0xff), UInt8((v >> 16) & 0xff), UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] + } + + /// An `.mpls` whose play items reference `clips` with the given in / out times (45 kHz ticks). + static func mpls(_ clips: [(id: String, inT: Int, outT: Int)]) -> Data { + var items: [UInt8] = [] + for clip in clips { + var body: [UInt8] = [] + body += Array(clip.id.utf8); body += Array("M2TS".utf8); body += be16(0); body.append(0) + body += be32(clip.inT); body += be32(clip.outT); body += [UInt8](repeating: 0, count: 8) + items += be16(body.count); items += body + } + var playlist: [UInt8] = [] + playlist += be32(0); playlist += be16(0); playlist += be16(clips.count); playlist += be16(0) + playlist += items + var out: [UInt8] = [] + out += Array("MPLS".utf8); out += Array("0200".utf8); out += be32(40); out += be32(0) + out += [UInt8](repeating: 0, count: 40 - out.count) + out += playlist + return Data(out) + } + + /// Bytes that say which clip they came from, so a concatenation can be checked byte for byte. + static func clipBytes(_ seed: UInt8, count: Int) -> Data { + Data((0.. (folder: MemoryFolder, stream: Data) { + let stream = TinyTransportStreamFixture.data + let split = (stream.count / 188 / 2) * 188 + let main = mpls([(id: "00001", inT: 63000, outT: 243000), (id: "00002", inT: 243000, outT: 423000)]) + let menu = mpls([(id: "00009", inT: 0, outT: 45000)]) + let folder = MemoryFolder([ + ("BDMV/index.bdmv", Data([0x49, 0x4E, 0x44, 0x58])), + ("BDMV/PLAYLIST/00000.mpls", menu), + ("BDMV/PLAYLIST/00800.mpls", main), + ("BDMV/STREAM/00001.m2ts", Data(stream.prefix(split))), + ("BDMV/STREAM/00002.m2ts", Data(stream.suffix(from: split))), + ("BDMV/STREAM/00009.m2ts", Data(repeating: 0x47, count: 188)), + ], preferredPlaylist: preferredPlaylist) + return (folder, stream) + } + + static func readToEnd(_ reader: IOReader, chunk: Int32 = 1000) -> Data { + var out = Data() + var buffer = [UInt8](repeating: 0, count: Int(chunk)) + while true { + let n = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: chunk) } + if n <= 0 { break } + out.append(contentsOf: buffer[0..?, size: Int32) -> Int32 { + let n = base.read(buffer, size: size) + if n > 0 { lock.withLock { fetched += Int64(n) } } + return n + } + func seek(offset: Int64, whence: Int32) -> Int64 { base.seek(offset: offset, whence: whence) } + func close() { lock.withLock { closed = true } } + } + + final class Opener: @unchecked Sendable { + let files: [String: Data] + private let lock = NSLock() + private(set) var readers: [CountingReader] = [] + init(_ files: [String: Data]) { self.files = files } + func open(_ path: String) -> IOReader? { + guard let data = files[path] else { return nil } + let reader = CountingReader(data) + lock.withLock { readers.append(reader) } + return reader + } + var openCount: Int { lock.withLock { readers.filter { !$0.closed }.count } } + } + + @Test("reads cross file boundaries, and every seek origin lands where a single file would") + func concatenatedReads() { + let parts = (1...4).map { Self.clipBytes(UInt8($0), count: 100 * $0) } + let opener = Opener(Dictionary(uniqueKeysWithValues: parts.enumerated().map { ("f\($0.offset)", $0.element) })) + let reader = MultiFileConcatIOReader( + segments: parts.enumerated().map { .init(path: "f\($0.offset)", size: Int64($0.element.count)) }, + opener: { opener.open($0) }) + let whole = parts.reduce(Data(), +) + #expect(Self.readToEnd(reader, chunk: 77) == whole) + #expect(reader.seek(offset: 0, whence: 65536) == 1000) + #expect(reader.seek(offset: 250, whence: SEEK_SET) == 250) + #expect(Self.readToEnd(reader, chunk: 120).first == whole[250]) + #expect(reader.seek(offset: -10, whence: SEEK_END) == 990) + #expect(reader.seek(offset: -5, whence: SEEK_CUR) == 985) + #expect(Self.readToEnd(reader) == whole.suffix(15)) + #expect(reader.seek(offset: -1, whence: SEEK_SET) < 0) + } + + @Test("at most three files stay open, and closed ones keep counting toward the bytes fetched") + func boundedOpenFiles() { + let parts = (0..<6).map { Self.clipBytes(UInt8($0), count: 64) } + let opener = Opener(Dictionary(uniqueKeysWithValues: parts.enumerated().map { ("f\($0.offset)", $0.element) })) + let reader = MultiFileConcatIOReader( + segments: parts.indices.map { .init(path: "f\($0)", size: 64) }, opener: { opener.open($0) }) + _ = Self.readToEnd(reader, chunk: 64) + #expect(opener.readers.count == 6) + #expect(opener.openCount == MultiFileConcatIOReader.openLimit) + #expect(reader.sourceBytesFetched == 6 * 64) + reader.close() + #expect(opener.openCount == 0) + #expect(reader.sourceBytesFetched == 6 * 64) + } + + @Test("a file shorter than listed ends the read early instead of inventing bytes") + func shortFile() { + let opener = Opener(["a": Self.clipBytes(1, count: 50), "b": Self.clipBytes(2, count: 100)]) + let reader = MultiFileConcatIOReader(segments: [.init(path: "a", size: 80), .init(path: "b", size: 100)], + opener: { opener.open($0) }) + var buffer = [UInt8](repeating: 0, count: 200) + let n = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 200) } + #expect(n == 50) + } + + /// A file whose reads park until `cancel`, the way a network read waits on a stalled origin. + final class ParkingReader: IOReader, @unchecked Sendable { + let parked = DispatchSemaphore(value: 0) + private let release = DispatchSemaphore(value: 0) + func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { + parked.signal() + release.wait() + return -1 + } + func seek(offset: Int64, whence: Int32) -> Int64 { offset } + func close() {} + func cancel() { release.signal() } + } + + @Test("a cancel unblocks a read parked inside a file", .timeLimit(.minutes(1))) + func cancelUnblocksAParkedRead() { + let file = ParkingReader() + let reader = MultiFileConcatIOReader(segments: [.init(path: "f", size: 100)], opener: { _ in file }) + let returned = DispatchSemaphore(value: 0) + Thread.detachNewThread { + var buffer = [UInt8](repeating: 0, count: 10) + _ = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 10) } + returned.signal() + } + #expect(file.parked.wait(timeout: .now() + 10) == .success) + reader.cancel() + #expect(returned.wait(timeout: .now() + 10) == .success) + } + + @Test("a cancel that arrives while a file is still opening cancels that file once it exists", .timeLimit(.minutes(1))) + func cancelDuringOpen() { + let file = ParkingReader() + let opening = DispatchSemaphore(value: 0) + let proceed = DispatchSemaphore(value: 0) + let reader = MultiFileConcatIOReader(segments: [.init(path: "f", size: 100)], opener: { _ in + opening.signal() + proceed.wait() + return file + }) + let returned = DispatchSemaphore(value: 0) + Thread.detachNewThread { + var buffer = [UInt8](repeating: 0, count: 10) + _ = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 10) } + returned.signal() + } + #expect(opening.wait(timeout: .now() + 10) == .success) + reader.cancel() + proceed.signal() + #expect(returned.wait(timeout: .now() + 10) == .success) + } + + // MARK: - Over HTTP, and through the engine + + @Test("an HTTP folder plays the same bytes, with an independent reader of its own", .timeLimit(.minutes(1))) + func httpFolder() throws { + let (memory, stream) = Self.tinyStreamFolder() + var origins: [KeepAliveRangeOrigin] = [] + defer { origins.forEach { $0.stop() } } + var files: [HTTPDiscDirectoryReader.File] = [] + for path in memory.order { + let origin = try #require(KeepAliveRangeOrigin(data: memory.files[path]!)) + origins.append(origin) + files.append(.init(path: path, size: Int64(memory.files[path]!.count), + url: URL(string: "http://127.0.0.1:\(origin.port)/\(path)")!)) + } + let folder = HTTPDiscDirectoryReader(files: files) + let info = try #require(try DiscReader.wrap(folder)) + #expect(Self.readToEnd(info.reader, chunk: 4096) == stream) + #expect((info.reader as? SourceTransferCounting)?.sourceBytesFetched ?? 0 >= Int64(stream.count)) + info.reader.close() + + let clone = try #require(folder.makeIndependentReader() as? DiscDirectoryReader) + let again = try #require(try DiscReader.wrap(clone)) + #expect(Self.readToEnd(again.reader, chunk: 4096) == stream) + again.reader.close() + } + + @Test("the public probe reads a folder source as its main title's stream") + func probeOfAFolder() throws { + let (folder, _) = Self.tinyStreamFolder() + let probe = try AetherEngine.probe(source: .custom(folder)) + #expect(probe.videoCodecName == "h264") + #expect(abs(probe.durationSeconds - 8) < 1) + #expect(folder.openedPaths.contains("BDMV/STREAM/00002.m2ts")) + } +} diff --git a/Tests/AetherEngineTests/BoundedFetchTests.swift b/Tests/AetherEngineTests/BoundedFetchTests.swift index 1fe31020d..26bc5508d 100644 --- a/Tests/AetherEngineTests/BoundedFetchTests.swift +++ b/Tests/AetherEngineTests/BoundedFetchTests.swift @@ -123,9 +123,15 @@ struct BoundedFetchTests { // Measured against `session.data(for:)` on the same origin in the same run, not against a wall // clock: a loaded suite stretched an absolute sample to 8 s, while the per-byte accumulation this // replaced ran about 27x slower than the plain fetch under any load (audit NET-113). + // + // Sampled until the bound holds rather than a fixed three times. A loaded suite stalls either + // fetch for up to 2.7 s against 16 ms unloaded, and all three bounded samples once landed in a + // stall. A stall only ever adds time, so the best sample converges on the real cost, and the + // per-byte path is slower in every sample and can never pass. + let bound = { (plain: Duration) in plain * 4 + .milliseconds(250) } var bestPlain = Duration.seconds(3600) var bestBounded = Duration.seconds(3600) - for _ in 0..<3 { + for _ in 0..<12 { let plainStart = ContinuousClock.now let (plain, _) = try await session.data(for: request(origin)) bestPlain = min(bestPlain, ContinuousClock.now - plainStart) @@ -134,8 +140,9 @@ struct BoundedFetchTests { let (data, _) = try await BoundedPlaylistFetch.data(for: request(origin), session: session, limit: 64 * 1024 * 1024) bestBounded = min(bestBounded, ContinuousClock.now - boundedStart) #expect(data.count == size) + if bestBounded < bound(bestPlain) { break } } - #expect(bestBounded < bestPlain * 4 + .milliseconds(250), "bounded \(bestBounded) vs plain \(bestPlain)") + #expect(bestBounded < bound(bestPlain), "bounded \(bestBounded) vs plain \(bestPlain)") } @Test("a segment may weigh 20 MB/s of its own duration between 32 MiB and 256 MiB") @@ -164,7 +171,7 @@ private final class LoopbackBodyOrigin: @unchecked Sendable { } let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let body: Body private let status: Int private let declaredLength: Int64? @@ -180,53 +187,21 @@ private final class LoopbackBodyOrigin: @unchecked Sendable { self.body = body self.status = status self.declaredLength = declaredLength - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var address = sockaddr_in() - address.sin_family = sa_family_t(AF_INET) - address.sin_port = 0 - address.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 8) == 0 else { - close(fd) - return nil - } - var length = socklen_t(MemoryLayout.size) - let named = withUnsafeMutablePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &length) } - } - guard named == 0 else { - close(fd) - return nil + guard let listener = LoopbackListener(backlog: 8) else { return nil } + self.listener = listener + port = listener.port + listener.start { [self] fd in + lock.withLock { _ = _connections.insert(fd) } + Thread.detachNewThread { [self] in serve(fd) } + return true } - listenFD = fd - port = UInt16(bigEndian: address.sin_port) - Thread.detachNewThread { [self] in acceptLoop() } } func stop() { lock.lock() for fd in _connections { shutdown(fd, SHUT_RDWR) } lock.unlock() - shutdown(listenFD, SHUT_RDWR) - close(listenFD) - } - - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - if fd < 0 { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - lock.withLock { _ = _connections.insert(fd) } - Thread.detachNewThread { [self] in serve(fd) } - } + listener.stop() } private func serve(_ fd: Int32) { diff --git a/Tests/AetherEngineTests/BoundedFrameExtractorTests.swift b/Tests/AetherEngineTests/BoundedFrameExtractorTests.swift new file mode 100644 index 000000000..7202fb2ba --- /dev/null +++ b/Tests/AetherEngineTests/BoundedFrameExtractorTests.swift @@ -0,0 +1,65 @@ +import CoreGraphics +import Foundation +import Testing +@testable import AetherEngine + +@Suite("Bounded source-backed still extraction") +struct BoundedFrameExtractorTests { + @Test("Input and deadline budgets cover open before decode", .timeLimit(.minutes(1))) + func openIsBudgeted() async throws { + let url = FileManager.default.temporaryDirectory + .appendingPathComponent(".bounded-frame-\(UUID().uuidString).mp4") + try ProbeTestFixtures.hdr10Plus().write(to: url) + defer { try? FileManager.default.removeItem(at: url) } + + let zeroInput = FrameExtractor(url: url) + let inputResult = await zeroInput.boundedSnapshot(at: 0, + maxSize: CGSize(width: 320, height: 320), + limits: ProbeLimits(maxInputBytes: 0, maxPackets: 900, + maxPacketBytes: 4 * 1_024 * 1_024, timeBudget: 10), + cancellation: ProbeCancellation()) + #expect(inputResult.map { _ in true } == nil) + await zeroInput.shutdown() + + let zeroTime = FrameExtractor(url: url) + let timeResult = await zeroTime.boundedSnapshot(at: 0, + maxSize: CGSize(width: 320, height: 320), + limits: ProbeLimits(maxInputBytes: 16 * 1_024 * 1_024, maxPackets: 900, + maxPacketBytes: 4 * 1_024 * 1_024, timeBudget: 0), + cancellation: ProbeCancellation()) + #expect(timeResult.map { _ in true } == nil) + await zeroTime.shutdown() + } + + @Test("A decoded still returns its measured presentation timestamp", .timeLimit(.minutes(1))) + func measuredPTS() async throws { + let url = FileManager.default.temporaryDirectory + .appendingPathComponent(".bounded-frame-\(UUID().uuidString).mp4") + try ProbeTestFixtures.hdr10Plus().write(to: url) + defer { try? FileManager.default.removeItem(at: url) } + let extractor = FrameExtractor(url: url) + let result = await extractor.boundedSnapshot(at: 0, + maxSize: CGSize(width: 320, height: 320), + limits: ProbeLimits(maxInputBytes: 16 * 1_024 * 1_024, maxPackets: 900, + maxPacketBytes: 4 * 1_024 * 1_024, timeBudget: 30), + cancellation: ProbeCancellation()) + await extractor.shutdown() + let frame = try #require(result) + #expect(frame.actualSeconds?.isFinite == true) + } + + @Test("The deadline interrupts a stalled HTTP open", .timeLimit(.minutes(1))) + func stalledHTTPHeader() async throws { + let origin = try ProbeHTTPTestOrigin(data: ProbeTestFixtures.hdr10Plus(), stage: .headers) + defer { origin.stop() } + let url = try #require(URL(string: "http://127.0.0.1:\(origin.port)/still.mp4")) + let extractor = FrameExtractor(url: url) + let result = await extractor.boundedSnapshot(at: 0, + maxSize: CGSize(width: 320, height: 320), + limits: ProbeLimits(maxInputBytes: 16 * 1_024 * 1_024, maxPackets: 900, + maxPacketBytes: 4 * 1_024 * 1_024, timeBudget: 1), + cancellation: ProbeCancellation()) + #expect(result.map { _ in true } == nil) + await extractor.shutdown() + } +} diff --git a/Tests/AetherEngineTests/ByteFIFOTests.swift b/Tests/AetherEngineTests/ByteFIFOTests.swift index 76e9f3fd6..3924ab946 100644 --- a/Tests/AetherEngineTests/ByteFIFOTests.swift +++ b/Tests/AetherEngineTests/ByteFIFOTests.swift @@ -27,7 +27,7 @@ final class ByteFIFOTests: XCTestCase { } while fifo.parkedWaiterCount == 0 { usleep(200) } // the park, not a guess at it XCTAssertTrue(fifo.write(Data([9, 9]))) - wait(for: [expectation], timeout: 2) + wait(for: [expectation], timeout: 300) } func testFinishDrainsThenSignalsEOF() { @@ -58,7 +58,7 @@ final class ByteFIFOTests: XCTestCase { } while fifo.parkedWaiterCount == 0 { usleep(200) } // the park, not a guess at it fifo.cancel() - wait(for: [expectation], timeout: 2) + wait(for: [expectation], timeout: 300) } // audit NET-8: storage moved from one re-based `Data` to a queue of chunks plus a head offset; @@ -105,6 +105,6 @@ final class ByteFIFOTests: XCTestCase { _ = buffer.withUnsafeMutableBufferPointer { fifo.read(into: $0.baseAddress!, maxLength: 4) } - wait(for: [expectation], timeout: 2) + wait(for: [expectation], timeout: 300) } } diff --git a/Tests/AetherEngineTests/CancellableLoadTests.swift b/Tests/AetherEngineTests/CancellableLoadTests.swift index 83f583f6f..0762d20d4 100644 --- a/Tests/AetherEngineTests/CancellableLoadTests.swift +++ b/Tests/AetherEngineTests/CancellableLoadTests.swift @@ -20,7 +20,7 @@ struct CancellableLoadTests { private var arrivals = 0 private var releasedByEngine = false - init(fallback: TimeInterval = 60) { self.fallback = fallback } + init(fallback: TimeInterval = 120) { self.fallback = fallback } var entered: Bool { condition.withLock { arrivals > 0 } } var wasReleasedByEngine: Bool { condition.withLock { releasedByEngine } } @@ -69,14 +69,13 @@ struct CancellableLoadTests { static let ceiling: Duration = .seconds(4) /// Cancels after the load has been held a moment and reports how long it took to end. The wait - /// runs well past `ceiling`, so a slow end reports its real duration instead of the poll's. - private static func cancelAndTime(_ task: Task, _ box: OutcomeBox, - budget: Duration = .seconds(30)) async throws -> Duration { + /// has no bound of its own, so a slow end reports its real duration instead of the poll's. + private static func cancelAndTime(_ task: Task, _ box: OutcomeBox) async throws -> Duration { try await Task.sleep(for: .milliseconds(200)) let clock = ContinuousClock() let cancelledAt = clock.now task.cancel() - _ = try await waitFor(upTo: budget) { box.outcome != nil } + try await waitFor { box.outcome != nil } return clock.now - cancelledAt } @@ -346,7 +345,7 @@ struct CancellableLoadTests { defer { condition.unlock() } let epoch = cancels arrivals += 1 - let deadline = Date().addingTimeInterval(10) + let deadline = Date().addingTimeInterval(120) while !closed, cancels == epoch, condition.wait(until: deadline) {} return -1 } @@ -372,7 +371,7 @@ struct CancellableLoadTests { engine.claimSoftwarePathTakeover() engine.stopInternal(resetDisplayCriteria: false, keepCustomReader: true) let gen = engine.loadGeneration - await Task.detached { + await BlockingWork.detached { var byte: UInt8 = 0 _ = reader.read(&byte, size: 1) }.value @@ -444,7 +443,7 @@ struct CancellableLoadTests { if armed, position == 0 { parkedAtHead += 1 let parked = parkedAtHead - let deadline = Date().addingTimeInterval(10) + let deadline = Date().addingTimeInterval(120) while armed, parkedAtHead == parked, condition.wait(until: deadline) {} return -1 } diff --git a/Tests/AetherEngineTests/ClosedCaptionTapA53Tests.swift b/Tests/AetherEngineTests/ClosedCaptionTapA53Tests.swift index 9d0dd591e..3a103db66 100644 --- a/Tests/AetherEngineTests/ClosedCaptionTapA53Tests.swift +++ b/Tests/AetherEngineTests/ClosedCaptionTapA53Tests.swift @@ -33,7 +33,8 @@ struct ClosedCaptionTapA53Tests { /// Regression for the tap-identity guard: `notifyA53CaptionsDetected` must surface the synthetic /// track exactly once, and a stray tap that is never assigned to `engine.closedCaptionTap` (a /// torn-down or superseded session's tap) must not resurrect or duplicate it. - @Test("Detection surfaces the synthetic track exactly once, even across a repeat and a stray tap") + @Test("Detection surfaces the synthetic track exactly once, even across a repeat and a stray tap", + .timeLimit(.minutes(2))) func onceOnlyNotify() async throws { let engine = try AetherEngine() let tap = ClosedCaptionTap(engine: engine, ccStreamIndex: Int32(AetherEngine.a53ClosedCaptionTrackID)) @@ -43,12 +44,7 @@ struct ClosedCaptionTapA53Tests { tap.ingestA53Ordered([triplet], ptsSeconds: 1.0) tap.ingestA53Ordered([triplet], ptsSeconds: 2.0) - let deadline = Date().addingTimeInterval(2) - while !engine.subtitleTracks.contains(where: { $0.id == AetherEngine.a53ClosedCaptionTrackID }), - Date() < deadline { - await Task.yield() - try await Task.sleep(nanoseconds: 20_000_000) - } + try await waitFor { engine.subtitleTracks.contains { $0.id == AetherEngine.a53ClosedCaptionTrackID } } #expect(engine.subtitleTracks.filter { $0.id == AetherEngine.a53ClosedCaptionTrackID }.count == 1) // A tap never assigned as the engine's active tap (stale/torn-down session): its detection diff --git a/Tests/AetherEngineTests/DTSXObjectMetadataMappingTests.swift b/Tests/AetherEngineTests/DTSXObjectMetadataMappingTests.swift new file mode 100644 index 000000000..c9d563f45 --- /dev/null +++ b/Tests/AetherEngineTests/DTSXObjectMetadataMappingTests.swift @@ -0,0 +1,90 @@ +import Testing +import Foundation +import DTSX +@testable import AetherEngine + +/// LibDTSX places DTS:X in the renderer's room itself; `DTSXObjectAudioDecoder` only names the +/// channels. These pin what a listener would hear wrong: a bed or height channel on the wrong +/// speaker, or an object somewhere other than where the library put it. +@Suite("DTS:X metadata maps onto the renderer's room") +struct DTSXObjectMetadataMappingTests { + + @Test("bed and fixed-height speaker codes route to the matching speaker, LFE to LFE, objects are positioned") + func speakerRoles() { + // The standard DTS:X presentation: a 7.1 bed and the top front and top back pairs. + let standard: [(UInt8, ObjectAudioRole)] = [ + (DTSX_SPEAKER_C, .bed(.center)), (DTSX_SPEAKER_L, .bed(.left)), (DTSX_SPEAKER_R, .bed(.right)), + (DTSX_SPEAKER_LS, .bed(.sideLeft)), (DTSX_SPEAKER_RS, .bed(.sideRight)), (DTSX_SPEAKER_LFE, .lfe), + (DTSX_SPEAKER_LB, .bed(.rearLeft)), (DTSX_SPEAKER_RB, .bed(.rearRight)), + (DTSX_SPEAKER_TFL, .bed(.topFrontLeft)), (DTSX_SPEAKER_TFR, .bed(.topFrontRight)), + (DTSX_SPEAKER_TBL, .bed(.topRearLeft)), (DTSX_SPEAKER_TBR, .bed(.topRearRight)), + ] + for (code, role) in standard { + #expect(DTSXObjectAudioDecoder.role(forSpeaker: code) == role, "speaker \(code)") + } + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_LW) == .bed(.wideLeft)) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_TSR) == .bed(.topMiddleRight)) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_TFC) == .fixed(SIMD3(0.5, 0.25, 1))) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_LSD) == .fixed(SpatialSpeaker.sideLeft.position)) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_RSD) == .fixed(SpatialSpeaker.sideRight.position)) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_OBJECT) == .object) + #expect(DTSXObjectAudioDecoder.role(forSpeaker: DTSX_SPEAKER_UNKNOWN) == .object) + } + + @Test("an object keeps the room position the library gave it, at its gain") + func object() { + var element = DTSXElement() + element.kind = DTSX_ELEMENT_OBJECT + element.speaker = DTSX_SPEAKER_OBJECT + element.flags = DTSX_ELEMENT_ACTIVE + element.position = (1, 0.0375, 0.2667) + element.gain = 1 + let state = DTSXObjectAudioDecoder.state(for: element) + #expect(state.position == SIMD3(1, 0.0375, 0.2667)) + #expect(state.gain == 1) + #expect(state.size == 0 && !state.snap && state.excluded.isEmpty) + + element.flags = 0 + #expect(DTSXObjectAudioDecoder.state(for: element).gain == 0) + } + + @Test("an IMAX front object at 34.5°, 12° up plays mostly from its front speaker, partly from the top front") + func imaxFrontObjectThroughThePanner() { + // Independence Day's DTS:X carries two static objects at azimuth ±34.5°, elevation 12°. + // LibDTSX places the right one on the right wall 0.0375 of the way back, 12/45 up; panned, + // the floor gets cos and the ceiling sin of 12/45 of a quarter turn, as by angle. + let layout = SpatialSpeakerLayout.l714 + var gains: [Float] = [] + AllocentricPanner(layout: layout).objectGains( + position: SIMD3(1, 0.0375, 12.0 / 45), size: 0, snap: false, into: &gains) + let gain = { (speaker: SpatialSpeaker) in gains[layout.speakers.firstIndex(of: speaker)!] } + let floor = cos(Float(12.0 / 45) * .pi / 2), ceiling = sin(Float(12.0 / 45) * .pi / 2) + #expect(abs(gain(.right) - floor * cos(0.075 * .pi / 2)) < 1e-4) + #expect(abs(gain(.sideRight) - floor * sin(0.075 * .pi / 2)) < 1e-4) + #expect(gain(.topFrontRight) > 0.95 * ceiling) + #expect(gain(.left) == 0 && gain(.topFrontLeft) == 0 && gain(.rearRight) == 0) + } + + @Test("the decoder opens, takes input and asks for more") + func decoderLifecycle() throws { + let decoder = try DTSXObjectAudioDecoder() + try [UInt8](repeating: 0, count: 64).withUnsafeBytes { try decoder.push($0) } + #expect(try decoder.nextBlock() == nil) + decoder.reset() + #expect(decoder.selfResetCount == 0) + } + + @Test("input with no DTS frame in it is refused, and the verdict says so") + func verdictRefusesNonDTS() throws { + let decoder = try DTSXObjectAudioDecoder() + let garbage = [UInt8](repeating: 0x55, count: 1 << 20 | 4096) + let verdict = garbage.withUnsafeBytes { decoder.verdict(feeding: $0) } + guard case .refused(let reason) = verdict else { + Issue.record("expected a refusal, got \(String(describing: verdict))") + return + } + #expect(reason.contains("no DTS frame")) + // The refusal sticks, so a bridge built on it anyway would fail rather than play nothing. + #expect(throws: DTSXObjectAudioDecoder.DecoderError.self) { try decoder.nextBlock() } + } +} diff --git a/Tests/AetherEngineTests/DTSXSampleTests.swift b/Tests/AetherEngineTests/DTSXSampleTests.swift new file mode 100644 index 000000000..71c3cc18b --- /dev/null +++ b/Tests/AetherEngineTests/DTSXSampleTests.swift @@ -0,0 +1,186 @@ +import Testing +import Foundation +import AetherLibavcodec +import AetherLibavutil +@testable import AetherEngine + +/// End to end on real DTS-HD elementary streams: verdict, decode, render, encode. The samples are +/// not in the repository, so each test runs only when its variable names a `.dts` file: +/// `AE_DTSX_SAMPLE` the "DTS:X Object Emulator" demo (standard 7.1.4, 95 s), +/// `AE_DTSX_ALTERNATE_SAMPLE` Trinnov's "Experience" trailer (7.1.4 plus five moving objects, 44 s), +/// `AE_DTS_HD_MA_SAMPLE` a DTS-HD Master Audio stream without DTS:X (FFmpeg's FATE +/// `dts/master_audio_7.1_24bit.dts`). LibDTSX's README says where to get them. +@Suite("DTS:X samples, decode to APAC") +struct DTSXSampleTests { + + private static func sample(_ variable: String) -> Data? { + ProcessInfo.processInfo.environment[variable].flatMap { try? Data(contentsOf: URL(fileURLWithPath: $0)) } + } + + /// The verdict on the head of a stream, fed in 4096-byte pieces as packets would arrive. + private static func verdict(_ data: Data) throws -> DTSXObjectAudioDecoder.Verdict? { + let decoder = try DTSXObjectAudioDecoder() + return data.withUnsafeBytes { raw in + var offset = 0 + while offset < raw.count { + let n = min(4096, raw.count - offset) + if let verdict = decoder.verdict(feeding: UnsafeRawBufferPointer(rebasing: raw[offset...allocate(capacity: 4096) } + defer { out.forEach { $0.deallocate() } } + var energy = [Double](repeating: 0, count: layout.channelCount) + var frames = 0, firstInputFrame: Int64 = -1 + var roles: [ObjectAudioRole] = [] + var misplaced = 0 + + try data.withUnsafeBytes { raw in + var offset = 0 + while offset < raw.count { + let n = min(4096, raw.count - offset) + try decoder.push(UnsafeRawBufferPointer(rebasing: raw[offset.. 1e-3, "\(speaker.rawValue) carries its height channel") + } + } + + @Test("alternate-presentation objects move, and render where LibDTSX placed them") + func alternateObjectsMove() throws { + guard let data = Self.sample("AE_DTSX_ALTERNATE_SAMPLE") else { return } + let decoder = try DTSXObjectAudioDecoder() + var objects = 0, ramps = 0, positions = Set>() + try data.withUnsafeBytes { raw in + var offset = 0 + while offset < raw.count { + let n = min(65536, raw.count - offset) + try decoder.push(UnsafeRawBufferPointer(rebasing: raw[offset.. 900, "moving objects ramp over the frame that moves them") + #expect(positions.count > 1000) + #expect(positions.allSatisfy { p in (0...1).contains(p.x) && (0...1).contains(p.y) && (0...1).contains(p.z) }) + } + + @Test("the bridge turns the whole standard sample into contiguous APAC packets") + func bridgesToAPAC() throws { + guard let data = Self.sample("AE_DTSX_SAMPLE") else { return } + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let bridge = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 48_000), layout: .l714, decoder: DTSXObjectAudioDecoder()) + defer { bridge.close() } + var pts: [Int64] = [] + var bytes = 0 + let start = Date() + try data.withUnsafeBytes { raw in + var offset = 0 + while offset < raw.count { + let n = min(3000, raw.count - offset) + let pkt = av_packet_alloc()! + defer { var p: UnsafeMutablePointer? = pkt; av_packet_free(&p) } + _ = av_new_packet(pkt, Int32(n)) + pkt.pointee.data.update(from: raw.baseAddress!.assumingMemoryBound(to: UInt8.self) + offset, count: n) + pkt.pointee.pts = offset == 0 ? 0 : Int64.min + for fp in try bridge.feed(packet: pkt) { + pts.append(fp.pointee.pts); bytes += Int(fp.pointee.size) + var p: UnsafeMutablePointer? = fp; trackedPacketFree(&p) + } + offset += n + } + } + for fp in bridge.flush() { + pts.append(fp.pointee.pts); bytes += Int(fp.pointee.size) + var p: UnsafeMutablePointer? = fp; trackedPacketFree(&p) + } + let elapsed = Date().timeIntervalSince(start) + let seconds = Double(pts.count * 1024) / 48_000 + print("[DTSXSample] 7.1.4 APAC: \(pts.count) packets, \(String(format: "%.2f", seconds)) s, " + + "\(bytes * 8 / Int(seconds) / 1000) kbps, \(String(format: "%.1f", seconds / elapsed))x realtime (debug build)") + // The first block sits after the two priming frames, so the encoder starts 1024 frames in. + #expect(pts.first == Int64(1024)) + #expect(zip(pts, pts.dropFirst()).allSatisfy { $1 - $0 == 1024 }) + // Two packets of encoder priming, then the 4,556,800 frames after the priming frames. + #expect(pts.count == 2 + Int((4_556_800.0 / 1024).rounded(.up))) + } +} diff --git a/Tests/AetherEngineTests/DVDCellTimelineTests.swift b/Tests/AetherEngineTests/DVDCellTimelineTests.swift new file mode 100644 index 000000000..aa99c71bd --- /dev/null +++ b/Tests/AetherEngineTests/DVDCellTimelineTests.swift @@ -0,0 +1,180 @@ +import Foundation +import Testing +@testable import AetherEngine + +/// A DVD title folded by cell (each cell's timestamp base read from its navigation packs) and sought by +/// its VTS time map: the IFO tables, the spans and map recognition builds from them, and the PCI read. +@Suite("DVD cell timeline and time map") +struct DVDCellTimelineTests { + + // MARK: - IFO fixture + + private static func be16(_ v: Int) -> [UInt8] { [UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] } + private static func be32(_ v: Int) -> [UInt8] { + [UInt8((v >> 24) & 0xff), UInt8((v >> 16) & 0xff), UInt8((v >> 8) & 0xff), UInt8(v & 0xff)] + } + /// dvd_time_t at 29.97 fps: BCD hours, minutes, seconds, then the frame-rate code and BCD frames. + private static func dvdTime(_ seconds: Int) -> [UInt8] { + func bcd(_ v: Int) -> UInt8 { UInt8(((v / 10) << 4) | (v % 10)) } + return [bcd(seconds / 3600), bcd((seconds % 3600) / 60), bcd(seconds % 60), 0xC0] + } + + struct CellSpec { + var seconds: Int + var first: Int + var last: Int + var angleBlock = false + } + + /// A PGC whose cell playback table holds `cells`, one program per cell. + private static func pgc(_ cells: [CellSpec]) -> [UInt8] { + var pgc = [UInt8](repeating: 0, count: 0xEC) + pgc[2] = UInt8(cells.count) + pgc[3] = UInt8(cells.count) + let total = dvdTime(cells.reduce(0) { $0 + $1.seconds }) + pgc[4..<8] = ArraySlice(total) + let programMap = 0xEC + let cellTable = programMap + cells.count + pgc[0xE6..<0xE8] = ArraySlice(be16(programMap)) + pgc[0xE8..<0xEA] = ArraySlice(be16(cellTable)) + pgc += (1...cells.count).map { UInt8($0) } + for cell in cells { + var entry = [UInt8](repeating: 0, count: 24) + if cell.angleBlock { entry[0] = 0x50 } // block mode 1 (first cell), block type 1 (angle) + entry[4..<8] = ArraySlice(dvdTime(cell.seconds)) + entry[8..<12] = ArraySlice(be32(cell.first)) + entry[20..<24] = ArraySlice(be32(cell.last)) + pgc += entry + } + return pgc + } + + /// A VTS IFO with `pgcs` in its VTS_PGCIT (sector 1) and, when given, a VTS_TMAPT (sector 2) holding + /// one time map per PGC: (unit seconds, sectors). + static func vtsIFO(pgcs: [[UInt8]], timeMaps: [(unit: Int, sectors: [Int])]? = nil) -> [UInt8] { + let headerSize = 8 + pgcs.count * 8 + var srps: [UInt8] = [] + var body: [UInt8] = [] + for pgc in pgcs { + srps += [0x81, 0, 0, 0] + be32(headerSize + body.count) + body += pgc + } + var ifo: [UInt8] = Array("DVDVIDEO-VTS".utf8) + ifo += [UInt8](repeating: 0, count: 0xCC - ifo.count) + ifo += be32(1) // VTS_PGCIT at sector 1 + ifo += [UInt8](repeating: 0, count: 0xD4 - ifo.count) + ifo += be32(timeMaps == nil ? 0 : 2) // VTS_TMAPT at sector 2 + ifo += [UInt8](repeating: 0, count: 2048 - ifo.count) + ifo += be16(pgcs.count) + be16(0) + be32(headerSize + body.count - 1) + srps + body + guard let timeMaps else { return ifo } + ifo += [UInt8](repeating: 0, count: 2 * 2048 - ifo.count) + var tables: [[UInt8]] = [] + for map in timeMaps { + tables.append([UInt8(map.unit), 0] + be16(map.sectors.count) + map.sectors.flatMap { be32($0) }) + } + let header = 8 + 4 * timeMaps.count + var offsets: [UInt8] = [] + var at = header + for table in tables { offsets += be32(at); at += table.count } + ifo += be16(timeMaps.count) + be16(0) + be32(at - 1) + offsets + tables.flatMap { $0 } + return ifo + } + + static let threeCells = [CellSpec(seconds: 600, first: 0, last: 999), + CellSpec(seconds: 1200, first: 1000, last: 2999), + CellSpec(seconds: 300, first: 3000, last: 3499)] + + // MARK: - IFO tables + + @Test("the main PGC's cells come out in playback order with their sectors and times") + func parsesCells() throws { + let ifo = Self.vtsIFO(pgcs: [Self.pgc(Self.threeCells)]) + let cells = try #require(DVDIFOParser.parseMainPGCCells(ifo)) + #expect(cells.map(\.firstSector) == [0, 1000, 3000]) + #expect(cells.map(\.lastSector) == [999, 2999, 3499]) + #expect(cells.map(\.durationSec) == [600, 1200, 300]) + #expect(cells.allSatisfy { !$0.inAngleBlock }) + } + + @Test("the time map is the one at the main PGC's own index") + func timeMapFollowsTheMainPGC() throws { + // The longer second PGC is the main one, so the second map is its own. + let short = Self.pgc([CellSpec(seconds: 30, first: 0, last: 9)]) + let ifo = Self.vtsIFO(pgcs: [short, Self.pgc(Self.threeCells)], + timeMaps: [(unit: 1, sectors: [5, 9]), (unit: 4, sectors: [100, 200, 300])]) + let map = try #require(DVDIFOParser.parseMainTimeMap(ifo)) + #expect(map.unitSec == 4) + #expect(map.sectors == [100, 200, 300]) + #expect(DVDIFOParser.parseMainTimeMap(Self.vtsIFO(pgcs: [Self.pgc(Self.threeCells)])) == nil) + } + + @Test("a discontinuity flag in a time map entry is not part of its sector") + func timeMapDiscontinuityFlag() throws { + let ifo = Self.vtsIFO(pgcs: [Self.pgc(Self.threeCells)], timeMaps: [(unit: 4, sectors: [100, 0x8000_00C8])]) + #expect(DVDIFOParser.parseMainTimeMap(ifo)?.sectors == [100, 200]) + } + + // MARK: - Spans and map + + @Test("contiguous cells become clip spans on the title timeline, and the map turns into bytes") + func cellTimeline() throws { + let ifo = Self.vtsIFO(pgcs: [Self.pgc(Self.threeCells)], timeMaps: [(unit: 4, sectors: [10, 20, 30])]) + let (spans, map) = DiscReader.dvdCellTimeline(ifo) + #expect(spans.map(\.concatByteStart) == [0, 1000 * 2048, 3000 * 2048]) + #expect(spans.map(\.cumulativeBeforeSec) == [0, 600, 1800]) + #expect(spans.map(\.predictedShiftSec) == [0, -600, -1800]) + #expect(map == DVDTimeMap(unitSec: 4, titleStartByte: 0, byteOffsets: [10 * 2048, 20 * 2048, 30 * 2048])) + } + + @Test("a title outside the common shape is left as it was read", arguments: [ + [CellSpec(seconds: 600, first: 0, last: 999)], // one cell + [CellSpec(seconds: 600, first: 50, last: 999), CellSpec(seconds: 60, first: 1000, last: 1099)], // late start + [CellSpec(seconds: 600, first: 0, last: 999), CellSpec(seconds: 60, first: 1200, last: 1299)], // a gap + [CellSpec(seconds: 600, first: 0, last: 999), CellSpec(seconds: 60, first: 1000, last: 1099, angleBlock: true)], + ]) + func uncommonShapes(cells: [CellSpec]) { + let (spans, map) = DiscReader.dvdCellTimeline(Self.vtsIFO(pgcs: [Self.pgc(cells)], timeMaps: [(unit: 4, sectors: [1])])) + #expect(spans.isEmpty) + #expect(map == nil) + } + + @Test("a time map seek lands on the VOBU at or before the title time") + func timeMapLookup() { + let map = DVDTimeMap(unitSec: 4, titleStartByte: 0, byteOffsets: [100, 200, 300]) + #expect(map.byteOffset(forTitleSeconds: 0) == 0) + #expect(map.byteOffset(forTitleSeconds: 3.9) == 0) + #expect(map.byteOffset(forTitleSeconds: 4) == 100) + #expect(map.byteOffset(forTitleSeconds: 9.5) == 200) + #expect(map.byteOffset(forTitleSeconds: 500) == 300) + #expect(map.byteOffset(forTitleSeconds: -1) == 0) + } + + // MARK: - Navigation pack + + /// A PCI as libavformat hands it over: the substream byte 0x00, then PCI_GI with the VOBU start PTS at + /// 0x0C and the cell elapsed time at 0x18 (one further in for the substream byte). + static func pci(startPTS: UInt32, elapsed: [UInt8]) -> [UInt8] { + var pci = [UInt8](repeating: 0, count: 980) + pci[0x0D..<0x11] = ArraySlice(be32(Int(startPTS))) + pci[0x19..<0x1D] = ArraySlice(elapsed) + return pci + } + + @Test("a PCI gives its cell's start: the VOBU's start PTS less the cell's elapsed time") + func cellBaseFromPCI() throws { + // 29.97 fps: 1 min 5 s and 15 frames into the cell, at 3700 s of raw PTS. + let ntsc = Self.pci(startPTS: 3700 * 90000, elapsed: [0x00, 0x01, 0x05, 0xC0 | 0x15]) + let base = try #require(ntsc.withUnsafeBufferPointer { Demuxer.dvdCellBaseSeconds(pci: $0) }) + #expect(abs(base - (3700 - 65 - 15 / (30000.0 / 1001.0))) < 0.0001) + + // 25 fps, 12 frames. + let pal = Self.pci(startPTS: 90000 * 100, elapsed: [0x00, 0x00, 0x10, 0x40 | 0x12]) + let palBase = try #require(pal.withUnsafeBufferPointer { Demuxer.dvdCellBaseSeconds(pci: $0) }) + #expect(abs(palBase - (100 - 10 - 12.0 / 25)) < 0.0001) + + var dsi = ntsc + dsi[0] = 0x01 + #expect(dsi.withUnsafeBufferPointer { Demuxer.dvdCellBaseSeconds(pci: $0) } == nil) + #expect(Array(ntsc.prefix(0x1C)).withUnsafeBufferPointer { Demuxer.dvdCellBaseSeconds(pci: $0) } == nil) + } +} diff --git a/Tests/AetherEngineTests/DemuxerStreamLifetimeTests.swift b/Tests/AetherEngineTests/DemuxerStreamLifetimeTests.swift index 12659d5ae..b905595da 100644 --- a/Tests/AetherEngineTests/DemuxerStreamLifetimeTests.swift +++ b/Tests/AetherEngineTests/DemuxerStreamLifetimeTests.swift @@ -128,11 +128,11 @@ struct DemuxerStreamLifetimeTests { indices: demuxer.subtitleStreamIndices()) done.set() } - let returned = try await waitFor(upTo: .seconds(5)) { done.value } + // An accessor that waits out the read never answers before the release; the time limit reports that. + try await waitFor { done.value } readReleased.signal() try await waitFor { readFinished.value } - #expect(returned, "a track accessor waited out a read that holds the access lock") #expect(answered.video == MultiSubtitleContainerFixture.videoStreamIndex) #expect(answered.subtitles == [MultiSubtitleContainerFixture.englishStreamIndex, MultiSubtitleContainerFixture.spanishStreamIndex]) diff --git a/Tests/AetherEngineTests/DetourOriginTicketTests.swift b/Tests/AetherEngineTests/DetourOriginTicketTests.swift index e219b99c2..0938ef2b4 100644 --- a/Tests/AetherEngineTests/DetourOriginTicketTests.swift +++ b/Tests/AetherEngineTests/DetourOriginTicketTests.swift @@ -7,7 +7,7 @@ import Foundation /// took the last slot and the inner acquire waited its whole four second budget for it: +4 s per /// block, and a third request on the books against a limit of two. A reader that already holds a /// ticket must never block on another, so the detour holds one. -@Suite("Detour origin ticket", .serialized) +@Suite("Detour origin ticket", .serialized, .offCooperativePool) struct DetourOriginTicketTests { @Test("a detour block behind a pump holding one of two slots takes one slot and no wait", @@ -59,4 +59,22 @@ struct DetourOriginTicketTests { #expect(server.requestedRanges.contains { $0.start == 4 * 1024 * 1024 && $0.end == 8 * 1024 * 1024 - 1 }, "no detour block went out, so this measured nothing: \(server.requestedRanges)") } + + #if os(macOS) + /// #746 moved the 429 accounting into `syncRequest`'s completion callback, so the slot is not + /// handed on before the refusal is on the books. The detour still charged the same answer again + /// afterwards, and each charge halves the origin's concurrency and doubles its quiet period. + @Test("a rate limited detour block is charged to the origin once", .timeLimit(.minutes(1))) + func rateLimitedDetourChargedOnce() async throws { + let origin = try #require(await RangeEchoOrigin(status: 429)) + defer { origin.stop() } + let url = URL(string: "http://127.0.0.1:\(origin.port)/movie.bin")! + let reader = AVIOReader(url: url) + defer { reader.markClosed(); reader.close() } + + #expect(reader.detourFetchIsRateLimitedForTesting(from: 0, size: 1024)) + let books = try #require(OriginRequestBudget.shared.snapshot(for: url)) + #expect(books.refusals == 1, "one 429 was charged \(books.refusals) times") + } + #endif } diff --git a/Tests/AetherEngineTests/DiscReaderRangeAnswerTests.swift b/Tests/AetherEngineTests/DiscReaderRangeAnswerTests.swift index 877d2e800..e29425a78 100644 --- a/Tests/AetherEngineTests/DiscReaderRangeAnswerTests.swift +++ b/Tests/AetherEngineTests/DiscReaderRangeAnswerTests.swift @@ -6,7 +6,7 @@ import Foundation /// the whole body, so an origin that ignored Range (or answered `bytes N-EOF`) put a 40 GB image /// into memory before the check could refuse it. The check now runs at the response head, and what /// is kept is capped at the range that was asked for. -@Suite("Disc reader range answers") +@Suite("Disc reader range answers", .offCooperativePool) struct DiscReaderRangeAnswerTests { private let total = Int64(512 * 1024 * 1024) diff --git a/Tests/AetherEngineTests/DocumentedConstantsTests.swift b/Tests/AetherEngineTests/DocumentedConstantsTests.swift index abe3fc582..5735fd0d8 100644 --- a/Tests/AetherEngineTests/DocumentedConstantsTests.swift +++ b/Tests/AetherEngineTests/DocumentedConstantsTests.swift @@ -18,6 +18,11 @@ import AetherLibavcodec /// Adding a number to the docs? Pin it here in the same commit. @MainActor final class DocumentedConstantsTests: XCTestCase { + func testLiveReplayQuarantineBoundsMatchDocumentation() throws { + XCTAssertEqual(LivePacketReplayGuard.maximumPendingBytes, 96 * 1_024 * 1_024) + XCTAssertEqual(LivePacketReplayGuard.maximumPendingPackets, 10_000) + assertDocumented("Quarantine is bounded to 96 MiB and 10,000 packets", try documentation()) + } func testAuthorizedResourceDeadlineMatchesDocumentation() throws { XCTAssertEqual(HTTPRequestAuthorization.resourceTransferTimeout, 20) @@ -221,38 +226,43 @@ final class DocumentedConstantsTests: XCTestCase { assertDocumented("Two channels or fewer have no surround to carry", docs) } + // MARK: - The Atmos rendition's CHANNELS value + + /// docs/formats.md and docs/architecture.md both print the CHANNELS value a stream-copied + /// E-AC-3 JOC rendition is advertised with, and the object count in it is the part a reader + /// checks against Dolby's delivery kit. If the engine ever sources it from the `dec3` box's + /// `complexity_index_type_a` instead of stating it, both sentences stop being true at once. + func testAtmosRenditionChannelsValueIsWhatTheDocsSay() throws { + let docs = try documentation() + XCTAssertEqual(VideoSegmentProvider.atmosChannelsAttribute, "16/JOC", + "documented as the object count, a slash, then JOC") + assertDocumented(#"`CHANNELS="16/JOC"`"#, docs) + } + // MARK: - External subtitle ids /// A host tells its own tracks from the engine's by this base, and docs/api.md prints the number. - /// formats.md "TrueHD Atmos (object rendering)" and the CHANGELOG quote the APAC rate. - func testAPACBedRateIsWhatTheDocsSay() throws { + /// docs/api.md and formats.md quote the APAC rate, the limiter and the bed log cadence (#731). + func testTrueHDAtmosNumbersAreWhatTheDocsSay() throws { guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } - XCTAssertEqual(SpatialAudioBridge.bitRatePerChannel, 320_000, - "docs/formats.md quotes 320 kbps per bed channel") - XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 8), "apac.31.02", - "docs/formats.md and cli.md quote apac.31.02 for 5.1.2") - XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 10), "apac.31.03", - "docs/formats.md and cli.md quote apac.31.03 for 10 channels") - XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 12), "apac.31.03", - "docs/formats.md and cli.md quote apac.31.03 for 12 channels") - XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 16), "apac.31.04", - "docs/formats.md and cli.md quote apac.31.04 for 16 channels") - } - - /// formats.md "TrueHD Atmos (object rendering)" and the CHANGELOG quote the bed level windows. - func testBedLevelWindowsAreWhatTheDocsSay() throws { let docs = try documentation() + XCTAssertEqual(SpatialAudioBridge.bitRatePerChannel, 320_000) + assertDocumented("320 kbps per bed channel", docs) + XCTAssertEqual(PeakLimiter.threshold, 0.98) + assertDocumented("nothing leaves above −0.18 dBFS", docs) + XCTAssertEqual(PeakLimiter.releaseSeconds, 0.25) + assertDocumented("a 250 ms release", docs) XCTAssertEqual(BedLevelMeter.firstWindowSeconds, 5) XCTAssertEqual(BedLevelMeter.windowSeconds, 30) assertDocumented("after the first 5 s of audio (and again after every seek), then every 30 s", docs) - } - - /// formats.md "TrueHD Atmos (object rendering)" and the CHANGELOG quote the APAC silence threshold. - func testAPACSilenceThresholdIsWhatTheDocsSay() throws { - guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } - let docs = try documentation() XCTAssertEqual(SpatialAudioBridge.silentFeedPacketThreshold, 1200) assertDocumented("returns nothing for 1200 packets in a row, a second of TrueHD", docs) + XCTAssertEqual(ObjectMetadataHold.maxHeldFrames, 4_800) + assertDocumented("(it waits at most 100 ms)", docs) + XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 8), "apac.31.02") + XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 10), "apac.31.03") + XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 12), "apac.31.03") + XCTAssertEqual(APACSampleEntry.codecsString(channelCount: 16), "apac.31.04") } func testExternalSubtitleTrackIDBaseIsDocumented() throws { diff --git a/Tests/AetherEngineTests/DolbyVisionRecordAuditTests.swift b/Tests/AetherEngineTests/DolbyVisionRecordAuditTests.swift index 9d9d778bf..2d7afba61 100644 --- a/Tests/AetherEngineTests/DolbyVisionRecordAuditTests.swift +++ b/Tests/AetherEngineTests/DolbyVisionRecordAuditTests.swift @@ -252,14 +252,14 @@ struct DolbyVisionRecordAuditTests { #expect(r.dvVariant == .profile7) } - @Test("the same correction on a display without Dolby Vision plays the HDR10 base") + @Test("the same correction on a display without Dolby Vision is converted and served as 8.1 too") func relabelledSevenOnNonDVDisplay() throws { let r = try Self.route(Self.relabelledProfile5(), dvDisplay: false, rpuProfile: 7) #expect(r.codecTagOverride == "hvc1") #expect(r.videoRange == .pq) - #expect(r.supplementalCodecs == nil) - #expect(r.doviConfig == .strip) - #expect(r.convertP7ToProfile81 == false) + #expect(r.supplementalCodecs == "dvh1.08.06/db1p") + #expect(r.doviConfig == .rewriteToProfile81) + #expect(r.convertP7ToProfile81) } @Test("without a verdict the record stands and the route does not move") diff --git a/Tests/AetherEngineTests/EngineTLSHandshakeTests.swift b/Tests/AetherEngineTests/EngineTLSHandshakeTests.swift index 734b168e6..df2067d30 100644 --- a/Tests/AetherEngineTests/EngineTLSHandshakeTests.swift +++ b/Tests/AetherEngineTests/EngineTLSHandshakeTests.swift @@ -85,8 +85,7 @@ let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } var got = 0 - let deadline = Date().addingTimeInterval(20) - while got < sliceCap && Date() < deadline { + while got < sliceCap { let n = reader.read(into: buf, size: Int32(sliceCap - got)) if n <= 0 { break } got += Int(n) diff --git a/Tests/AetherEngineTests/ErrorEndedReconnectTests.swift b/Tests/AetherEngineTests/ErrorEndedReconnectTests.swift index 9bd3e727c..d6d68e5f0 100644 --- a/Tests/AetherEngineTests/ErrorEndedReconnectTests.swift +++ b/Tests/AetherEngineTests/ErrorEndedReconnectTests.swift @@ -10,7 +10,7 @@ import Foundation /// only ended when the segment provider tore the demuxer down from outside. /// /// `.serialized`: these tests mutate the process-wide backoff-scale test hook. -@Suite("Error-ended zero-byte reconnects", .serialized) +@Suite("Error-ended zero-byte reconnects", .serialized, .offCooperativePool) struct ErrorEndedReconnectTests { private final class PhaseLog: @unchecked Sendable { diff --git a/Tests/AetherEngineTests/FrameDecodeContextHardwareTests.swift b/Tests/AetherEngineTests/FrameDecodeContextHardwareTests.swift index 85f254e9f..5b724d2c9 100644 --- a/Tests/AetherEngineTests/FrameDecodeContextHardwareTests.swift +++ b/Tests/AetherEngineTests/FrameDecodeContextHardwareTests.swift @@ -1,4 +1,5 @@ import Foundation +import CoreGraphics import Testing @testable import AetherEngine @@ -6,6 +7,35 @@ import Testing /// playback is already on the hardware path, so issue #27's software-playback starvation does /// not apply. A codec VideoToolbox declines must remain a successful software still, not a miss. struct FrameDecodeContextHardwareTests { + @Test("cancelled resident request never opens or decodes a source") + func cancelledResidentRequest() async { + let extractor = FrameExtractor(reader: DataIOReader(data: Data()), formatHint: "mp4") + #expect(await extractor.residentPreview(rawTarget: 1, refined: true, maxWidth: 320, isCancelled: { true }) == nil) + await extractor.shutdown() + } + @Test("resident refinement reports actual PTS and cannot invent a target frame past EOF") + func residentActualPTSAndMissingTarget() throws { + let data = try #require(Data(base64Encoded: Self.mpeg4FixtureBase64, options: .ignoreUnknownCharacters)) + let context = FrameDecodeContext(reader: DataIOReader(data: data), formatHint: "mp4", allowsHardwareDecode: false) + defer { context.close() } + try context.ensureOpen() + var actual: Double? + var refined = false + let image = context.decodeFrame(at: 0, mode: .snapshot, targetWidth: 64, + maxSize: CGSize(width: 64, height: 64), isCancelled: { false }, residentTarget: 0, + reportResidentTime: { actual = $0; refined = $1 }) + #expect(image != nil) + #expect(actual == 0) + #expect(refined) + actual = nil + let missing = context.decodeFrame(at: 0, mode: .snapshot, targetWidth: 64, + maxSize: CGSize(width: 64, height: 64), isCancelled: { false }, residentTarget: 0.9, + reportResidentTime: { actual = $0; refined = $1 }) + #expect(missing == nil) + #expect(actual == nil) + #expect(context.decodeFrame(at: 0, mode: .thumbnail, targetWidth: 64, maxSize: nil, + isCancelled: { true }, residentTarget: 0) == nil) + } @Test("hardware-allowed still falls back for an MPEG-4 Part 2 fixture") func declinedCodecStillDecodes() throws { diff --git a/Tests/AetherEngineTests/HLSLiveIngestDecryptIntegrationTests.swift b/Tests/AetherEngineTests/HLSLiveIngestDecryptIntegrationTests.swift index 9c5f5af3f..7923d51a0 100644 --- a/Tests/AetherEngineTests/HLSLiveIngestDecryptIntegrationTests.swift +++ b/Tests/AetherEngineTests/HLSLiveIngestDecryptIntegrationTests.swift @@ -43,7 +43,7 @@ final class HLSLiveIngestDecryptIntegrationTests: XCTestCase { } done.fulfill() } - wait(for: [done], timeout: 40) + wait(for: [done], timeout: 300) let got = box.data XCTAssertNil(reader.terminalError, "ingest went terminal: \(String(describing: reader.terminalError))") diff --git a/Tests/AetherEngineTests/HLSLocalServerSlowPeerTests.swift b/Tests/AetherEngineTests/HLSLocalServerSlowPeerTests.swift index 06cdf8746..4098ddc27 100644 --- a/Tests/AetherEngineTests/HLSLocalServerSlowPeerTests.swift +++ b/Tests/AetherEngineTests/HLSLocalServerSlowPeerTests.swift @@ -22,8 +22,7 @@ struct HLSLocalServerSlowPeerTests { // The old per-recv timeout was 60 s, so closing well inside that is the fix. #expect(await Self.onOwnThread { Self.peerCloses(fd: fd, within: 20) }, "an idle unauthenticated connection kept its slot") - let released = try await waitFor(upTo: .seconds(20)) { server.activeConnectionCount == 0 } - #expect(released) + try await waitFor { server.activeConnectionCount == 0 } } @Test("A peer trickling its head one byte at a time is dropped at the head deadline") @@ -38,8 +37,7 @@ struct HLSLocalServerSlowPeerTests { #expect(await Self.onOwnThread { Self.peerCloses(fd: fd, within: 20) }, "a byte every 200 ms kept an unauthenticated connection open") - let released = try await waitFor(upTo: .seconds(20)) { server.activeConnectionCount == 0 } - #expect(released) + try await waitFor { server.activeConnectionCount == 0 } } @Test("A connection that presented the token keeps its keep-alive idle past the stranger deadline") @@ -167,7 +165,7 @@ struct HLSLocalServerSlowPeerTests { /// One keep-alive GET on an open connection; the status, or 0. Reads until the declared body /// has arrived so the next request on the same socket starts clean. private static func requestStatus(fd: Int32, path: String) -> Int { - var timeout = timeval(tv_sec: 10, tv_usec: 0) + var timeout = timeval(tv_sec: 120, tv_usec: 0) _ = setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeout, socklen_t(MemoryLayout.size)) let request = "GET \(path) HTTP/1.1\r\nHost: 127.0.0.1\r\n\r\n" let sent = Array(request.utf8).withUnsafeBytes { send(fd, $0.baseAddress, $0.count, 0) } diff --git a/Tests/AetherEngineTests/HLSOriginRelayStalledConsumerTests.swift b/Tests/AetherEngineTests/HLSOriginRelayStalledConsumerTests.swift index 6c0c1919d..d8295b8df 100644 --- a/Tests/AetherEngineTests/HLSOriginRelayStalledConsumerTests.swift +++ b/Tests/AetherEngineTests/HLSOriginRelayStalledConsumerTests.swift @@ -130,11 +130,10 @@ struct HLSOriginRelayStalledConsumerTests { // The relay keeps taking the body off the origin while nobody reads it downstream. Parked at // 4 MB it never does, and the origin's last write never completes. - let absorbed = try await waitFor(upTo: .seconds(30)) { big.finishedSending } - #expect(absorbed, "the relay stopped reading the origin because its consumer stalled") + try await waitFor { big.finishedSending } var request = URLRequest(url: try entry(server, port: quick.port, path: "/quick.ts")) - request.timeoutInterval = 20 + request.timeoutInterval = 150 let (body, response) = try await URLSession.shared.data(for: request) #expect((response as? HTTPURLResponse)?.statusCode == 200) #expect(body.count == TricklingOrigin.totalBytes(slices: 2)) @@ -157,7 +156,7 @@ struct HLSOriginRelayStalledConsumerTests { try await waitFor { relay.cappedFetchCount == 1 } var request = URLRequest(url: try entry(server, port: quick.port, path: "/quick.ts")) - request.timeoutInterval = 20 + request.timeoutInterval = 150 let (body, response) = try await URLSession.shared.data(for: request) #expect((response as? HTTPURLResponse)?.statusCode == 200) #expect(body.count == TricklingOrigin.totalBytes(slices: 2)) @@ -176,7 +175,7 @@ struct HLSOriginRelayStalledConsumerTests { defer { server.stop(); relay.stop() } var request = URLRequest(url: try entry(server, port: origin.port, path: "/seg.ts")) - request.timeoutInterval = 30 + request.timeoutInterval = 150 let (body, response) = try await URLSession.shared.data(for: request) #expect((response as? HTTPURLResponse)?.statusCode == 200) #expect(body.count == TricklingOrigin.totalBytes(slices: 64)) diff --git a/Tests/AetherEngineTests/HTTPDiscIOReaderTests.swift b/Tests/AetherEngineTests/HTTPDiscIOReaderTests.swift index e17b0ad53..df0baab4b 100644 --- a/Tests/AetherEngineTests/HTTPDiscIOReaderTests.swift +++ b/Tests/AetherEngineTests/HTTPDiscIOReaderTests.swift @@ -8,7 +8,7 @@ import Testing // Serialized: the tests share MockRangeURLProtocol's static byte store keyed by URL; running them // in parallel would let one test's fixture bytes answer another's request. -@Suite("HTTPDiscIOReader (#64 remote disc images)", .serialized) +@Suite("HTTPDiscIOReader (#64 remote disc images)", .serialized, .offCooperativePool) struct HTTPDiscIOReaderTests { // MARK: - Pure helpers @@ -162,6 +162,49 @@ struct HTTPDiscIOReaderTests { let wrapped = try DiscReader.wrap(r) #expect(wrapped != nil) } + + // MARK: - Source byte accounting + + @Test("The reader counts the bytes it pulled from the origin") + func countsPulledBytes() throws { + let src = (0..<200_000).map { UInt8($0 & 0xff) } + let r = try #require(makeReader(src)) + #expect(r.sourceBytesFetched == 0) + var out = [UInt8](repeating: 0, count: 6000) + let n = out.withUnsafeMutableBufferPointer { r.read($0.baseAddress, size: 6000) } + #expect(n == 6000) + // One refill at the 64 KiB floor covers the 6000 bytes read: the count is the transfer. + #expect(r.sourceBytesFetched == 65_536) + // A re-read inside the buffer pulls nothing new. + #expect(r.seek(offset: 4500, whence: SEEK_SET) == 4500) + _ = out.withUnsafeMutableBufferPointer { r.read($0.baseAddress, size: 100) } + #expect(r.sourceBytesFetched == 65_536) + // A seek out of the buffer refills, and that refill counts. + #expect(r.seek(offset: 150_000, whence: SEEK_SET) == 150_000) + _ = out.withUnsafeMutableBufferPointer { r.read($0.baseAddress, size: 100) } + #expect(r.sourceBytesFetched == 65_536 + 50_000) + } + + // A disc session reports `LiveTelemetry.demuxerBytesFetched` and the software-path throughput + // from this counter. It read 0 for every custom source, so a remote disc image showed no source + // bytes at all while the reader pulled the whole title. + @Test("A remote disc reports the reader's bytes through its extent map and the demuxer bridge") + func discBridgeReportsPulledBytes() throws { + let disc = ISO9660Fixture.make(files: [ + .init(name: "VTS_01_1.VOB", length: 2048), + ]) + let r = try #require(makeReader([UInt8](disc))) + let wrapped = try #require(try DiscReader.wrap(r)) + let bridge = CustomIOReaderBridge(reader: wrapped.reader) + #expect(r.sourceBytesFetched > 0) + #expect(bridge.cumulativeBytesFetched == r.sourceBytesFetched) + } + + @Test("A host's own reader still reports no source bytes") + func hostReaderReportsNothing() { + let bridge = CustomIOReaderBridge(reader: DataIOReader(data: Data(repeating: 1, count: 4096))) + #expect(bridge.cumulativeBytesFetched == 0) + } } /// In-process URLProtocol that answers `Range` requests from `bytesByURL`, returning 206 + a diff --git a/Tests/AetherEngineTests/IFrameRenditionTests.swift b/Tests/AetherEngineTests/IFrameRenditionTests.swift index 127218d11..fb0901308 100644 --- a/Tests/AetherEngineTests/IFrameRenditionTests.swift +++ b/Tests/AetherEngineTests/IFrameRenditionTests.swift @@ -27,6 +27,7 @@ private final class Recorder: @unchecked Sendable { var waits: Int { lock.lock(); defer { lock.unlock() }; return _waits } } +@Suite(.offCooperativePool) struct IFrameRenditionTests { private func make(_ rec: Recorder, count: Int = 5, cacheLimit: Int = 1 << 20) -> (IFrameRendition, URL) { let dir = FileManager.default.temporaryDirectory @@ -182,7 +183,7 @@ struct IFrameRenditionTests { #expect(secondDone.wait(timeout: .now() + 0.4) == .timedOut) release.signal() requestDone.wait(); firstDone.wait() - #expect(secondDone.wait(timeout: .now() + 10) == .success) + #expect(secondDone.wait(timeout: .now() + 120) == .success) } @Test("while source reads are held, a request is answered from the cache or not at all") diff --git a/Tests/AetherEngineTests/IFrameSessionTests.swift b/Tests/AetherEngineTests/IFrameSessionTests.swift index d8cbb0c83..14d939f91 100644 --- a/Tests/AetherEngineTests/IFrameSessionTests.swift +++ b/Tests/AetherEngineTests/IFrameSessionTests.swift @@ -50,12 +50,6 @@ private final class CountingFileReader: IOReader, @unchecked Sendable { func close() { lock.withLock { _closes += 1 } } } -private func waitUntil(_ timeout: TimeInterval = 5, _ condition: () -> Bool) -> Bool { - let deadline = Date().addingTimeInterval(timeout) - while Date() < deadline { if condition() { return true }; Thread.sleep(forTimeInterval: 0.02) } - return condition() -} - @Suite("I-frame rendition on a real session", .serialized) struct IFrameSessionTests { private static let fixture = "restart-witness-av.mp4" @@ -174,7 +168,7 @@ struct IFrameSessionTests { @Test("a custom source's clone feeds the side reader and is closed exactly once at stop", .enabled(if: fixtureExists(fixture)), .timeLimit(.minutes(2))) - func customCloneIsClosedAtStop() throws { + func customCloneIsClosedAtStop() async throws { let clone = try CountingFileReader(url: fixtureURL(Self.fixture)) let engine = HLSVideoEngine(url: fixtureURL(Self.fixture), dvModeAvailable: false) engine.requestIFramePlaylist() @@ -185,21 +179,21 @@ struct IFrameSessionTests { #expect(IFrameTestBoxes.sampleCount(fragment: fragment) == 1) #expect(clone.closes == 0) engine.stop() - #expect(waitUntil { clone.closes == 1 }) - Thread.sleep(forTimeInterval: 0.2) + try await waitFor { clone.closes == 1 } + try await Task.sleep(for: .milliseconds(200)) #expect(clone.closes == 1) } @Test("a clone nobody ever read from is still closed at stop", .enabled(if: fixtureExists(fixture)), .timeLimit(.minutes(2))) - func untouchedCloneIsClosedAtStop() throws { + func untouchedCloneIsClosedAtStop() async throws { let clone = try CountingFileReader(url: fixtureURL(Self.fixture)) let engine = HLSVideoEngine(url: fixtureURL(Self.fixture), dvModeAvailable: false) engine.requestIFramePlaylist() engine.customIFrameReader = (reader: clone, formatHint: "mp4") _ = try engine.start() engine.stop() - #expect(waitUntil { clone.closes == 1 }) + try await waitFor { clone.closes == 1 } } @Test("a clone handed to a session that cannot serve the rendition is closed at once", diff --git a/Tests/AetherEngineTests/IFrameSideReaderTests.swift b/Tests/AetherEngineTests/IFrameSideReaderTests.swift index 5df349ad0..9e00075fb 100644 --- a/Tests/AetherEngineTests/IFrameSideReaderTests.swift +++ b/Tests/AetherEngineTests/IFrameSideReaderTests.swift @@ -131,7 +131,7 @@ struct IFrameSideReaderTests { #expect(DemuxerOpenProfile.labelsWithoutCompositionRepair.contains("extract")) } - @Test("interrupt aborts an open that is still in flight", .timeLimit(.minutes(1))) + @Test("interrupt aborts an open that is still in flight", .timeLimit(.minutes(3))) func interruptAbortsAnOpenInFlight() { let parked = ProbeParkedReader(operation: .read) parked.mayReturn.open() @@ -146,8 +146,8 @@ struct IFrameSideReaderTests { entered.wait() Thread.sleep(forTimeInterval: 0.2) r.interrupt() - let returned = done.wait(timeout: .now() + 10) == .success - #expect(returned, "payload() was still inside the open ten seconds after interrupt()") + let returned = done.wait(timeout: .now() + 120) == .success + #expect(returned, "payload() was still inside the open 120 seconds after interrupt()") parked.release() if !returned { done.wait() } r.close() diff --git a/Tests/AetherEngineTests/Issue141FarForwardSeekTests.swift b/Tests/AetherEngineTests/Issue141FarForwardSeekTests.swift index a80bd0dbd..f42d05cbf 100644 --- a/Tests/AetherEngineTests/Issue141FarForwardSeekTests.swift +++ b/Tests/AetherEngineTests/Issue141FarForwardSeekTests.swift @@ -94,7 +94,7 @@ struct Issue141FarForwardSeekTests { } let provider = makeProvider(cache: cache, recorder: recorder, producerBase: 30, initialRestartIndex: 30, - backpressureWait: 1.0) + backpressureWait: 60.0) let served = provider.mediaSegment(at: 41) diff --git a/Tests/AetherEngineTests/Issue151SubtitleForwardPrefetchTests.swift b/Tests/AetherEngineTests/Issue151SubtitleForwardPrefetchTests.swift index 053ad4b70..725bce7ea 100644 --- a/Tests/AetherEngineTests/Issue151SubtitleForwardPrefetchTests.swift +++ b/Tests/AetherEngineTests/Issue151SubtitleForwardPrefetchTests.swift @@ -66,7 +66,7 @@ struct Issue151SubtitleForwardPrefetchTests { /// The prefetch loop harvests every routed subtitle packet up to playhead + lead, then PARKS: /// nothing past the lead edge may be read while the playhead stands still, and advancing the /// playhead resumes the read through EOF. - @Test("prefetch harvests to the lead edge, parks, resumes on playhead advance") + @Test("prefetch harvests to the lead edge, parks, resumes on playhead advance", .timeLimit(.minutes(2))) func prefetchHarvestsToLeadAndParks() async throws { let fixture = MatroskaSubtitleFixture.make( durationMs: 130_000, @@ -91,8 +91,7 @@ struct Issue151SubtitleForwardPrefetchTests { } // 2 / 30 / 55 s are inside the lead; 90 s is the packet whose read trips the park. - let reachedPark = try await waitFor(upTo: .seconds(5)) { store.frontier(streamIndex: 0) == 90 } - #expect(reachedPark, "prefetch never reached the park point (frontier=\(store.frontier(streamIndex: 0) ?? -1))") + try await waitFor { store.frontier(streamIndex: 0) == 90 } // Parked: the 120 s event must not be read while the playhead stays at 0. try await Task.sleep(nanoseconds: 300_000_000) diff --git a/Tests/AetherEngineTests/Issue169DeadProducerEscalationTests.swift b/Tests/AetherEngineTests/Issue169DeadProducerEscalationTests.swift index d5e5221ad..8f339d780 100644 --- a/Tests/AetherEngineTests/Issue169DeadProducerEscalationTests.swift +++ b/Tests/AetherEngineTests/Issue169DeadProducerEscalationTests.swift @@ -11,6 +11,7 @@ import Foundation /// backpressure wait that elapsed with zero front progress for the same index escalates on the next /// request. Both must also bypass the restart loop's producerCovers veto, which reads the dead /// producer's still-installed base. +@Suite(.offCooperativePool) struct Issue169DeadProducerEscalationTests { private final class Recorder: @unchecked Sendable { diff --git a/Tests/AetherEngineTests/Issue174PersistentReadBackpressureTests.swift b/Tests/AetherEngineTests/Issue174PersistentReadBackpressureTests.swift index 120f497f2..268f747cf 100644 --- a/Tests/AetherEngineTests/Issue174PersistentReadBackpressureTests.swift +++ b/Tests/AetherEngineTests/Issue174PersistentReadBackpressureTests.swift @@ -17,7 +17,7 @@ import Foundation /// /// They run a loopback HTTP/1.1 origin that counts every body byte it manages to write and /// records every Range it is asked for. -@Suite("AVIOReader persistent backpressure (#174/#220/#310)") +@Suite("AVIOReader persistent backpressure (#174/#220/#310)", .offCooperativePool, .timeLimit(.minutes(2))) struct Issue174PersistentReadBackpressureTests { @@ -33,7 +33,10 @@ struct Issue174PersistentReadBackpressureTests { // Nobody consumes: the demux side is deliberately parked, the exact #174 shape // (muxer backpressured on SegmentCache high water, no read ever advances position). - try await Task.sleep(for: .seconds(3)) + // Wait for the high-water end itself, then leave a window in which a refill with + // nothing draining would have to show up. + try await waitFor { reader.windowDiagnostics.parked && !reader.hasLiveConnectionForTesting } + try await Task.sleep(for: .seconds(1)) // The #310 contract, in order of importance: the flow is GONE (a suspended task is a // dormant flow), the end is recorded as backpressure so the refill path owns it, the @@ -63,15 +66,14 @@ struct Issue174PersistentReadBackpressureTests { // Stall long enough for the high-water end to engage, then consume far more than the // window: delivery must keep flowing, which proves the frontier refill runs. - try await Task.sleep(for: .seconds(2)) + try await waitFor { reader.windowDiagnostics.parked } let sliceCap = 256 * 1024 let target = 48 * 1024 * 1024 let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } var got = 0 - let deadline = Date().addingTimeInterval(30) - while got < target && Date() < deadline { + while got < target { let n = reader.read(into: buf, size: Int32(sliceCap)) if n <= 0 { break } got += Int(n) @@ -95,7 +97,7 @@ struct Issue174PersistentReadBackpressureTests { let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/movie.bin")!) try reader.open() - try await Task.sleep(for: .seconds(2)) + try await waitFor { reader.windowDiagnostics.parked } // Completing without a hang is the assertion: nothing may be left waiting on a // connection that was deliberately ended and will never refill after close. diff --git a/Tests/AetherEngineTests/Issue177IngestPrefetchTests.swift b/Tests/AetherEngineTests/Issue177IngestPrefetchTests.swift index aac0ef0b6..c608d9f47 100644 --- a/Tests/AetherEngineTests/Issue177IngestPrefetchTests.swift +++ b/Tests/AetherEngineTests/Issue177IngestPrefetchTests.swift @@ -12,7 +12,7 @@ import Foundation /// being served concurrently. Serial fetch never exceeds 1; the pipeline must overlap /// (>= 2) while staying inside its window (<= 4). Byte order in the FIFO stays playlist /// order even when a slow segment completes after its successors. -@Suite("HLS live ingest bounded prefetch (#177)") +@Suite("HLS live ingest bounded prefetch (#177)", .offCooperativePool, .timeLimit(.minutes(2))) struct Issue177IngestPrefetchTests { // MARK: - Loopback HLS origin @@ -23,7 +23,7 @@ struct Issue177IngestPrefetchTests { /// captures the concurrency high-water mark. private final class LoopbackHLSOrigin: @unchecked Sendable { let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let firstPlaylist: Data private let finalPlaylist: Data private let segments: [Data] @@ -32,7 +32,6 @@ struct Issue177IngestPrefetchTests { private var _playlistRequests = 0 private var _inFlight = 0 private var _highWater = 0 - private var _stopped = false var concurrencyHighWater: Int { lock.lock(); defer { lock.unlock() } @@ -63,71 +62,23 @@ struct Issue177IngestPrefetchTests { firstPlaylist = playlist(count: initialWindow, endList: false) finalPlaylist = playlist(count: segments.count, endList: true) - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var addr = sockaddr_in() - addr.sin_family = sa_family_t(AF_INET) - addr.sin_port = 0 - addr.sin_addr.s_addr = inet_addr("127.0.0.1") - let bindResult = withUnsafePointer(to: &addr) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bindResult == 0, listen(fd, 16) == 0 else { - close(fd) - return nil - } - var bound = sockaddr_in() - var len = socklen_t(MemoryLayout.size) - let nameResult = withUnsafeMutablePointer(to: &bound) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - getsockname(fd, $0, &len) + guard let listener = LoopbackListener(backlog: 16) else { return nil } + self.listener = listener + port = listener.port + // The listener sets SO_NOSIGPIPE, or a hung-up peer takes the whole test process with + // it: serve() parks in the scripted delay before it writes the body, and a cancelled or + // drained fetch closes in exactly that window. + listener.start { [weak self] conn in + guard let self else { close(conn); return false } + Thread.detachNewThread { [weak self] in + self?.serve(conn) } - } - guard nameResult == 0 else { - close(fd) - return nil - } - listenFD = fd - port = UInt16(bigEndian: bound.sin_port) - - Thread.detachNewThread { [weak self] in - self?.acceptLoop() + return true } } func stop() { - lock.lock() - _stopped = true - lock.unlock() - close(listenFD) - } - - private var stopped: Bool { - lock.lock(); defer { lock.unlock() } - return _stopped - } - - private func acceptLoop() { - while !stopped { - let conn = accept(listenFD, nil, nil) - guard conn >= 0 else { return } - // SO_NOSIGPIPE, or a hung-up peer takes the whole test process with it. serve() - // parks in the scripted delay before it writes the body, and a cancelled or drained - // fetch closes in exactly that window: the write then raises SIGPIPE, whose default - // action kills the process. That death leaves no crash report and no failing test, - // only a truncated event stream and `swift test` exit 1, so it reads as a random - // CI ghost rather than as this socket. - var noSigPipe: Int32 = 1 - setsockopt(conn, SOL_SOCKET, SO_NOSIGPIPE, &noSigPipe, - socklen_t(MemoryLayout.size)) - Thread.detachNewThread { [weak self] in - self?.serve(conn) - } - } + listener.stop() } private func serve(_ conn: Int32) { @@ -201,12 +152,11 @@ struct Issue177IngestPrefetchTests { return data } - /// `timeout` is a backstop against a wedged reader, not a pacing bound: the loop exits the - /// moment `expectedBytes` arrived (~0.5 s healthy). Keep it wide (90 s, the repo's starved-CI - /// backstop width): under parallel-suite starvation the tail segments can arrive tens of - /// seconds late while the reader is perfectly healthy, and a 15 s cap turned exactly that - /// into a byte-count flake (8/11 segments at deadline, CI 2026-07-21). - private func drain(_ reader: HLSLiveIngestReader, expectedBytes: Int, timeout: TimeInterval) -> Data { + /// Returns the moment `expectedBytes` arrived (~0.5 s healthy). It has no deadline of its own: + /// under parallel-suite starvation the tail segments can arrive tens of seconds late while the + /// reader is perfectly healthy, and a 15 s cap turned exactly that into a byte-count flake + /// (8/11 segments at deadline, CI 2026-07-21). The suite's `.timeLimit` is the hang catcher. + private func drain(_ reader: HLSLiveIngestReader, expectedBytes: Int) async throws -> Data { final class Box: @unchecked Sendable { let lock = NSLock() var data = Data() @@ -230,23 +180,14 @@ struct Issue177IngestPrefetchTests { box.done = true box.lock.unlock() } - let deadline = Date().addingTimeInterval(timeout) - while Date() < deadline { - box.lock.lock() - let done = box.done - box.lock.unlock() - if done { break } - usleep(20_000) - } - box.lock.lock() - defer { box.lock.unlock() } - return box.data + try await waitFor { box.lock.withLock { box.done } } + return box.lock.withLock { box.data } } // MARK: - Tests @Test("backlog fetches overlap within the window and commit in playlist order") - func prefetchOverlapsAndPreservesOrder() throws { + func prefetchOverlapsAndPreservesOrder() async throws { // First playlist advertises seg0..7 (1 s segments, so the tracker's 8 s coverage target // wants the whole window and the eviction margin leaves the oldest, joining seg1..7); the // refresh advertises seg0..15 with ENDLIST, delivering seg8..15 as one 8-segment batch @@ -274,7 +215,7 @@ struct Issue177IngestPrefetchTests { // Join takes seg1..7 per the tracker's edge policy, the refresh appends seg8..15. let expected = segments[1...].reduce(Data(), +) - let got = drain(reader, expectedBytes: expected.count, timeout: 90) + let got = try await drain(reader, expectedBytes: expected.count) #expect(reader.terminalError == nil) #expect(got == expected, "FIFO bytes must be exact playlist order regardless of completion order") @@ -286,7 +227,7 @@ struct Issue177IngestPrefetchTests { } @Test("a declared single-request origin gets its segments one at a time (AE#678)") - func declaredRequestCeilingSerializesTheBacklog() throws { + func declaredRequestCeilingSerializesTheBacklog() async throws { let segmentCount = 16 let segments = (0.. (Issue208WaitResult, XCTestExpectation) { let result = Issue208WaitResult() let finished = expectation(description: "startup waiter finished") @@ -96,7 +96,7 @@ final class Issue208FastZapDegradedStartTests: XCTestCase { let threshold = DispatchTime.now() append(provider, index: 1) - wait(for: [finished], timeout: 1.2) + wait(for: [finished], timeout: 300) let elapsed = Double( DispatchTime.now().uptimeNanoseconds - threshold.uptimeNanoseconds ) / 1_000_000_000 @@ -118,7 +118,7 @@ final class Issue208FastZapDegradedStartTests: XCTestCase { for index in 2..<15 { append(provider, index: index) } - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) XCTAssertEqual(result.value, true) } @@ -132,7 +132,7 @@ final class Issue208FastZapDegradedStartTests: XCTestCase { XCTAssertNil(result.value) provider.cancelWaiters() - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) XCTAssertEqual(result.value, false) } @@ -145,7 +145,7 @@ final class Issue208FastZapDegradedStartTests: XCTestCase { for index in 0..<15 { append(provider, index: index) } - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) let elapsed = Double( DispatchTime.now().uptimeNanoseconds - started.uptimeNanoseconds ) / 1_000_000_000 @@ -164,7 +164,7 @@ final class Issue208FastZapDegradedStartTests: XCTestCase { Thread.sleep(forTimeInterval: 0.25) append(provider, index: 2) - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) let elapsed = Double( DispatchTime.now().uptimeNanoseconds - threshold.uptimeNanoseconds ) / 1_000_000_000 diff --git a/Tests/AetherEngineTests/Issue209LiveTargetDurationStabilityTests.swift b/Tests/AetherEngineTests/Issue209LiveTargetDurationStabilityTests.swift index ce6173173..ed2209294 100644 --- a/Tests/AetherEngineTests/Issue209LiveTargetDurationStabilityTests.swift +++ b/Tests/AetherEngineTests/Issue209LiveTargetDurationStabilityTests.swift @@ -159,7 +159,7 @@ final class Issue209LiveTargetDurationStabilityTests: XCTestCase { let result = Issue209WaitResult() let finished = expectation(description: "startup waiter finishes after cancellation") Thread.detachNewThread { - result.store(provider.waitForFirstLiveSegment(timeout: 2)) + result.store(provider.waitForFirstLiveSegment(timeout: 120)) finished.fulfill() } @@ -177,7 +177,7 @@ final class Issue209LiveTargetDurationStabilityTests: XCTestCase { ) provider.cancelWaiters() - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) XCTAssertEqual(result.value, false) } diff --git a/Tests/AetherEngineTests/Issue220BoundedRangeTests.swift b/Tests/AetherEngineTests/Issue220BoundedRangeTests.swift index 6614b5c28..cf81ed873 100644 --- a/Tests/AetherEngineTests/Issue220BoundedRangeTests.swift +++ b/Tests/AetherEngineTests/Issue220BoundedRangeTests.swift @@ -7,7 +7,7 @@ import Foundation /// that never saturates the socket the transport keeps delivering and the window grows without /// bound. Asking for a fixed amount at a time makes the overshoot impossible rather than caught: /// the origin cannot send more than was requested. -@Suite("Bounded persistent ranges (#220)") +@Suite("Bounded persistent ranges (#220)", .offCooperativePool, .timeLimit(.minutes(2))) struct Issue220BoundedRangeTests { private func makeReader(_ server: ThrottledOriginServer) -> AVIOReader { @@ -23,13 +23,11 @@ struct Issue220BoundedRangeTests { /// exists to catch also landed too late to be seen. Quiescence is the state the assertions /// actually want, and it is reachable without a fixed sleep. private func waitForOriginToSettle(_ server: ThrottledOriginServer, - quietFor: TimeInterval = 0.2, - cap: TimeInterval = 5) async { - let deadline = Date().addingTimeInterval(cap) + quietFor: TimeInterval = 0.2) async throws { var last = server.rangeRequestCount var quietSince = Date() - while Date() < deadline { - try? await Task.sleep(nanoseconds: 20_000_000) + while true { + try await Task.sleep(nanoseconds: 20_000_000) let now = server.rangeRequestCount if now != last { last = now @@ -99,7 +97,7 @@ struct Issue220BoundedRangeTests { // The defect reconnected at the READ position, so it asked again for a byte inside the // range already in hand. Nothing may do that: the opening request is the only one allowed // to touch [0, firstRange), and the refill starts at firstRange exactly. - await waitForOriginToSettle(server) + try await waitForOriginToSettle(server) let refetches = server.requestedRanges.filter { $0.start > 0 && $0.start < firstRange } #expect(refetches.isEmpty, "a completed range was re-fetched instead of read: \(server.requestedRanges)") @@ -125,12 +123,12 @@ struct Issue220BoundedRangeTests { // Baseline only counts as a baseline once the open's own requests have all landed; the // speculative tail fetch is issued concurrently and would otherwise arrive afterwards and // read as a connection this EOF read opened. - await waitForOriginToSettle(server) + try await waitForOriginToSettle(server) let requestsBefore = server.rangeRequestCount #expect(reader.seek(offset: size, whence: SEEK_SET) == size) #expect(reader.read(into: buf, size: 4096) == FFmpegErr.eof) - await waitForOriginToSettle(server) + try await waitForOriginToSettle(server) #expect(server.rangeRequestCount == requestsBefore, "a read at EOF opened a connection: \(server.requestedRanges)") } diff --git a/Tests/AetherEngineTests/Issue243ReaderRetentionTests.swift b/Tests/AetherEngineTests/Issue243ReaderRetentionTests.swift index 82a2c0c3f..70e2ba312 100644 --- a/Tests/AetherEngineTests/Issue243ReaderRetentionTests.swift +++ b/Tests/AetherEngineTests/Issue243ReaderRetentionTests.swift @@ -53,7 +53,7 @@ final class RetentionRangeURLProtocol: URLProtocol, @unchecked Sendable { } } -@Suite("#243 IOReader buffers do not strand in the caller's autorelease pool", .serialized) +@Suite("#243 IOReader buffers do not strand in the caller's autorelease pool", .serialized, .offCooperativePool) struct Issue243ReaderRetentionTests { private static func mallocInUseBytes() -> Int64 { @@ -63,15 +63,25 @@ struct Issue243ReaderRetentionTests { } /// Bytes released when the pool the reads ran in is drained. + /// + /// The malloc figure is process-wide, so a test in another suite that frees a large buffer + /// while this pool drains reads as bytes this pool held. Up to three attempts, keeping the + /// smallest: the defect holds about a byte per byte read on every attempt, a stray free lands + /// on one. private static func bytesHeldByCallerPool(bytesRead: inout Int64, _ readLoop: () -> Int64) -> Int64 { - var beforeDrain: Int64 = 0 - var moved: Int64 = 0 - autoreleasepool { - moved = readLoop() - beforeDrain = mallocInUseBytes() + var smallest = Int64.max + for _ in 0..<3 { + var beforeDrain: Int64 = 0 + var moved: Int64 = 0 + autoreleasepool { + moved = readLoop() + beforeDrain = mallocInUseBytes() + } + bytesRead = moved + smallest = min(smallest, max(0, beforeDrain - mallocInUseBytes())) + if smallest < moved / 10 { break } } - bytesRead = moved - return max(0, beforeDrain - mallocInUseBytes()) + return smallest } /// A tenth of the bytes moved: far above the fixed-size noise of a pool drain, far below the diff --git a/Tests/AetherEngineTests/Issue254OffMainRepositionTests.swift b/Tests/AetherEngineTests/Issue254OffMainRepositionTests.swift index 923201467..6b47de0a5 100644 --- a/Tests/AetherEngineTests/Issue254OffMainRepositionTests.swift +++ b/Tests/AetherEngineTests/Issue254OffMainRepositionTests.swift @@ -36,7 +36,7 @@ struct Issue254OffMainRepositionTests { @MainActor @Test("a reposition waiting on the demuxer leaves the main actor free", .timeLimit(.minutes(3))) - func blockedRepositionKeepsMainActorLive() async { + func blockedRepositionKeepsMainActorLive() async throws { let demuxer = Demuxer() let queue = DispatchQueue(label: "test.issue254.blocked") let release = DispatchSemaphore(value: 0) @@ -62,7 +62,7 @@ struct Issue254OffMainRepositionTests { // 100 ms of main-actor work while the reposition is stuck behind the queue. The inline call // this replaces could not reach here at all: it held the thread these hops need. - for _ in 0..<5 { try? await Task.sleep(for: .milliseconds(20)) } + for _ in 0..<5 { try await Task.sleep(for: .milliseconds(20)) } #expect(finished.isSet == false) release.signal() diff --git a/Tests/AetherEngineTests/Issue255BodyReserveTests.swift b/Tests/AetherEngineTests/Issue255BodyReserveTests.swift index 568fc659f..af6e4082d 100644 --- a/Tests/AetherEngineTests/Issue255BodyReserveTests.swift +++ b/Tests/AetherEngineTests/Issue255BodyReserveTests.swift @@ -42,7 +42,7 @@ final class ScriptedOriginServer: @unchecked Sendable { var body: Data? = nil } - private let listenFD: Int32 + private let listener: LoopbackListener private let reply: @Sendable (Recorded) -> Reply private let lock = NSLock() private var _requests: [Recorded] = [] @@ -69,92 +69,49 @@ final class ScriptedOriginServer: @unchecked Sendable { init?(reply: @escaping @Sendable (Recorded) -> Reply) { self.reply = reply - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - - var addr = sockaddr_in() - addr.sin_family = sa_family_t(AF_INET) - addr.sin_port = 0 - addr.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &addr) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 8) == 0 else { - close(fd) - return nil - } - var named = sockaddr_in() - var len = socklen_t(MemoryLayout.size) - let gotName = withUnsafeMutablePointer(to: &named) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &len) } - } - guard gotName == 0 else { - close(fd) - return nil - } - self.listenFD = fd - self.port = UInt16(bigEndian: named.sin_port) - Thread.detachNewThread { [self] in acceptLoop() } + guard let listener = LoopbackListener(backlog: 8) else { return nil } + self.listener = listener + self.port = listener.port + listener.start { [self] fd in admit(fd) } } func stop() { lock.lock() - let fds = _connFDs - _connFDs = [] let already = _stopped _stopped = true + // shutdown unblocks a write parked on a full socket buffer. Never close here: the serving + // thread still issues reads and writes on the number, and a closed number is the next + // opener's in this process, so its bytes would land on another suite's socket. + if !already { for fd in _connFDs { shutdown(fd, SHUT_RDWR) } } lock.unlock() guard !already else { return } - // shutdown unblocks a write parked on a full socket buffer; close alone may not. - for fd in fds { - shutdown(fd, SHUT_RDWR) - close(fd) - } - shutdown(listenFD, SHUT_RDWR) - close(listenFD) + listener.stop() } - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - if fd < 0 { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - lock.lock() - if _stopped { - lock.unlock() - shutdown(fd, SHUT_RDWR) - close(fd) - return - } - _connFDs.append(fd) + private func admit(_ fd: Int32) -> Bool { + lock.lock() + if _stopped { lock.unlock() - Thread.detachNewThread { [self] in - while serveOneRequest(fd) {} - closeConnection(fd) - } + shutdown(fd, SHUT_RDWR) + close(fd) + return false + } + _connFDs.append(fd) + lock.unlock() + Thread.detachNewThread { [self] in + while serveOneRequest(fd) {} + closeConnection(fd) } + return true } - /// Closes a connection exactly once. `stop()` closes every descriptor still registered, so a socket - /// whose serving thread is done has to leave the registry before it closes: otherwise the kernel - /// hands that number to the next opener (in practice a guarded descriptor), `stop()` closes it a - /// second time, and the EXC_GUARD kills the whole test process instead of failing one test. The run - /// then ends with no failing test and a bare exit 1. + /// The serving thread is the only closer. Deregistering and closing under the lock keeps `stop()` + /// from shutting down a number this thread has already given back. private func closeConnection(_ fd: Int32) { lock.lock() - guard let index = _connFDs.firstIndex(of: fd) else { - lock.unlock() - return // stop() owns this descriptor now - } - _connFDs.remove(at: index) - lock.unlock() - shutdown(fd, SHUT_RDWR) + _connFDs.removeAll { $0 == fd } close(fd) + lock.unlock() } /// Returns false when the connection is done (client gone, malformed request, or a scripted close). @@ -238,7 +195,7 @@ final class ScriptedOriginServer: @unchecked Sendable { } } -@Suite("#255 a declared Content-Length never sizes an allocation", .serialized) +@Suite("#255 a declared Content-Length never sizes an allocation", .serialized, .offCooperativePool) struct Issue255BodyReserveTests { /// The reported source: 12.4 GB, the number the HEAD declared and malloc refused. @@ -341,10 +298,10 @@ struct Issue255BodyReserveTests { // "the HEAD fallback never ran" from a request log that only held the primary probe (one // observed failure, green on the next run of the same commit). The wait exits as soon as a // size resolves, so a wider ceiling costs nothing in the healthy case and only buys the - // fallback the room to actually be measured. + // fallback the room to actually be measured. 25 is the most the ladder takes (`min(25, _)`). let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/big.mkv")!, chunkSize: 1024 * 1024, prefetchEnabled: false, - chunkRequestTimeout: 15) + chunkRequestTimeout: 25) defer { reader.markClosed(); reader.close() } try reader.open() @@ -372,7 +329,7 @@ struct Issue255BodyReserveTests { let chunk = 1024 * 1024 let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/big.mkv")!, chunkSize: chunk, prefetchEnabled: false, - chunkRequestTimeout: 5, chunkMaxRetries: 1) + chunkRequestTimeout: 30, chunkMaxRetries: 1) defer { reader.markClosed(); reader.close() } try reader.open() diff --git a/Tests/AetherEngineTests/Issue259A53CaptionAxisTests.swift b/Tests/AetherEngineTests/Issue259A53CaptionAxisTests.swift index 51dc167c4..0791ccfa7 100644 --- a/Tests/AetherEngineTests/Issue259A53CaptionAxisTests.swift +++ b/Tests/AetherEngineTests/Issue259A53CaptionAxisTests.swift @@ -74,7 +74,7 @@ struct Issue259A53CaptionAxisTests { .enabled(if: fixtureExists("a53-captions.mp4"), "run Scripts/fetch-fixtures.sh to generate the A/53 caption clip"), .timeLimit(.minutes(2))) - func a53ObservationsStayOnTheSourceAxis() throws { + func a53ObservationsStayOnTheSourceAxis() async throws { let witnessCount = 24 let (expected, sourceTimeBase) = try sourceA53PacketPTS("a53-captions.mp4", limit: witnessCount) #expect(expected.count == witnessCount, @@ -95,8 +95,7 @@ struct Issue259A53CaptionAxisTests { let prov = try #require(engine.provider) #expect(prov.mediaSegment(at: 0) != nil) - let deadline = Date().addingTimeInterval(30) - while collector.count < witnessCount, Date() < deadline { usleep(50_000) } + try await waitFor { collector.count >= witnessCount } let observed = Array(collector.snapshot().prefix(witnessCount)) try #require(observed.count == witnessCount, "producer emitted only \(observed.count)/\(witnessCount) A/53 observations") diff --git a/Tests/AetherEngineTests/Issue260FrameTimeAxisTests.swift b/Tests/AetherEngineTests/Issue260FrameTimeAxisTests.swift index 04d617478..c872db9e8 100644 --- a/Tests/AetherEngineTests/Issue260FrameTimeAxisTests.swift +++ b/Tests/AetherEngineTests/Issue260FrameTimeAxisTests.swift @@ -117,7 +117,7 @@ struct Issue260FrameTimeAxisTests { .enabled(if: fixtureExists("restart-witness-av.mp4"), "run Scripts/fetch-fixtures.sh to generate the witness clip"), .timeLimit(.minutes(2))) - func restartOpensNewEpoch() throws { + func restartOpensNewEpoch() async throws { let collector = FrameTimeCollector() let seams = SeamCollector() let engine = HLSVideoEngine(url: fixtureURL("restart-witness-av.mp4"), dvModeAvailable: false) @@ -135,14 +135,8 @@ struct Issue260FrameTimeAxisTests { engine.requestRestart(at: 1) - let deadline = Date().addingTimeInterval(30) - var restarted: [NativeVideoFrameTime] = [] - while Date() < deadline { - restarted = collector.snapshot().filter { $0.epoch > firstEpoch } - if !restarted.isEmpty { break } - usleep(50_000) - } - try #require(!restarted.isEmpty, "restarted producer emitted no frame times within 30s") + try await waitFor { collector.snapshot().contains { $0.epoch > firstEpoch } } + let restarted = collector.snapshot().filter { $0.epoch > firstEpoch } // The restart producer starts at segment 1, so its seam sits at that segment's item-axis start, // not at 0: a seam of 0 would collapse the history exactly like the pre-#260 behaviour. diff --git a/Tests/AetherEngineTests/Issue268HLSVODIngestTests.swift b/Tests/AetherEngineTests/Issue268HLSVODIngestTests.swift index 666ceeaea..af29171c3 100644 --- a/Tests/AetherEngineTests/Issue268HLSVODIngestTests.swift +++ b/Tests/AetherEngineTests/Issue268HLSVODIngestTests.swift @@ -287,6 +287,49 @@ final class Issue268HLSVODIngestTests: XCTestCase { ) } + func testCarriageProbeAcceptsPrivatePESRegisteredAsHEVC() { + let hevc: [UInt8] = [0x05, 0x04, 0x48, 0x45, 0x56, 0x43] + XCTAssertEqual( + MPEGTransportStreamCodecProbe.classify(transportStream(streamType: 0x06, descriptors: hevc)), + .hevcInMPEGTS + ) + XCTAssertEqual( + MPEGTransportStreamCodecProbe.classify( + transportStream(streamType: 0x06, descriptors: [0x0A, 0x04, 0x65, 0x6E, 0x67, 0x00] + hevc)), + .hevcInMPEGTS, + "the registration is found behind an unrelated descriptor" + ) + XCTAssertEqual( + MPEGTransportStreamCodecProbe.classify(transportStream(streamType: 0x24, descriptors: hevc)), + .hevcInMPEGTS + ) + } + + func testCarriageProbeIgnoresPrivatePESWithoutHEVCRegistration() { + let cases: [(String, [UInt8], Int?)] = [ + ("no descriptor", [], nil), + ("another format identifier", [0x05, 0x04, 0x4B, 0x4C, 0x56, 0x41], nil), + ("HEVC bytes under another tag", [0x0A, 0x04, 0x48, 0x45, 0x56, 0x43], nil), + ("registration shorter than a format identifier", [0x05, 0x03, 0x48, 0x45, 0x56], nil), + ("descriptor longer than its ES_info loop", [0x05, 0x04, 0x48, 0x45, 0x56, 0x43], 4), + ("ES_info loop longer than the section", [0x05, 0x04, 0x48, 0x45, 0x56, 0x43], 40), + ] + for (label, descriptors, declaredLength) in cases { + XCTAssertEqual( + MPEGTransportStreamCodecProbe.classify( + transportStream(streamType: 0x06, descriptors: descriptors, declaredInfoLength: declaredLength)), + .otherCarriage, + label + ) + } + XCTAssertEqual( + MPEGTransportStreamCodecProbe.classify( + transportStream(streamType: 0x1B, descriptors: [0x05, 0x04, 0x48, 0x45, 0x56, 0x43])), + .otherCarriage, + "the registration only reinterprets private PES" + ) + } + func testCarriageProbeWithoutEvidenceStaysInconclusive() { XCTAssertEqual(MPEGTransportStreamCodecProbe.classify(Data()), .inconclusive) XCTAssertEqual( @@ -332,6 +375,22 @@ final class Issue268HLSVODIngestTests: XCTestCase { return bytes } + /// `declaredInfoLength` overrides the ES_info_length the PMT announces, to build loops whose + /// bounds disagree with their descriptors. + private func transportStream( + streamType: UInt8, + descriptors: [UInt8], + declaredInfoLength: Int? = nil + ) -> Data { + var bytes = [UInt8](transportStream(streamType: streamType)) + bytes[7] = UInt8(18 + descriptors.count) + let infoLength = declaredInfoLength ?? descriptors.count + bytes[20] = 0xF0 | UInt8(infoLength >> 8) + bytes[21] = UInt8(infoLength & 0xFF) + bytes.replaceSubrange(22..<(22 + descriptors.count), with: descriptors) + return Data(bytes) + } + private func transportStream(streamType: UInt8) -> Data { var bytes = [UInt8](repeating: 0xFF, count: 188 * 3) for packet in 0..<3 { diff --git a/Tests/AetherEngineTests/Issue281ColdStartRoundTripTests.swift b/Tests/AetherEngineTests/Issue281ColdStartRoundTripTests.swift index 76f1b29ad..a2795b3a0 100644 --- a/Tests/AetherEngineTests/Issue281ColdStartRoundTripTests.swift +++ b/Tests/AetherEngineTests/Issue281ColdStartRoundTripTests.swift @@ -9,7 +9,7 @@ import Foundation /// /// These tests work in byte offsets rather than through a real container, so they pin the reader's /// behaviour rather than one fixture's box layout. -@Suite("Cold-start round trips (#281)") +@Suite("Cold-start round trips (#281)", .offCooperativePool, .timeLimit(.minutes(2))) struct Issue281ColdStartRoundTripTests { private let fileSize: Int64 = 512 * 1024 * 1024 @@ -24,10 +24,10 @@ struct Issue281ColdStartRoundTripTests { return reader.read(into: buf, size: Int32(size)) } - /// Waits for the speculative fetch, which by design nothing blocks on, so the budget is part - /// of the observation rather than a guess at scheduling. + /// Waits for the speculative fetch to reach the origin. Nothing in the reader blocks on it, but + /// every caller needs it out, so the wait has no deadline of its own. private func waitForTailSpan(_ server: ThrottledOriginServer, tailStart: Int64) async throws { - try await waitFor(upTo: .seconds(10)) { + try await waitFor { server.requestedRanges.contains(where: { $0.start == tailStart }) } } @@ -85,6 +85,11 @@ struct Issue281ColdStartRoundTripTests { /// either side of a bound computed from one of them (2 x 400 ms against a 550 ms fetch), and a /// loaded CI runner spent that 250 ms margin and reconnected, failing a test whose subject is /// whether the reader waits at all. The bound's calibration is checked separately, below. + /// + /// Pinned at 5 s it still failed once: the budget runs from the fetch's ISSUE, and a starved + /// run (every test in this suite took 24 to 29 s, the one with no origin delay at all included) + /// spent it before the read arrived while the landed body was still queued for its delegate. + /// The suite's time limit is the only bound this test needs. @Test("a tail read waits for a fetch already on the wire instead of connecting past it") func tailReadWaitsForTheInFlightPrefetch() async throws { let delayed = ThrottledOriginServer( @@ -92,8 +97,11 @@ struct Issue281ColdStartRoundTripTests { firstByteDelayUs: { isSuffix in isSuffix ? 550_000 : 400_000 }) let server = try #require(delayed) defer { server.stop() } - let reader = makeReader(server) - reader.tailPrefetchWaitBudgetForTesting = 5.0 + let label = "tail-wait-\(UUID().uuidString.prefix(8))" + let log = EngineLogCapture() + defer { log.end() } + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/movie.bin")!, label: label) + reader.tailPrefetchWaitBudgetForTesting = 90 defer { reader.markClosed(); reader.close() } try reader.open() _ = read(reader, 64 * 1024) // the box chain at the head @@ -108,7 +116,7 @@ struct Issue281ColdStartRoundTripTests { // On the range, not on the count: the reconnect this forbids is identifiable by where it // starts (the read position), and a bare count cannot tell it from any other arrival. #expect(!server.requestedRanges.contains(where: { $0.start == tailStart + 1024 }), - "the tail read connected past a fetch already in flight: \(server.requestedRanges)") + "the tail read connected past a fetch already in flight: \(server.requestedRanges); reader log: \(log.matching(label))") } /// The wait above has to be bounded by something, and the bound is what one round trip against @@ -117,9 +125,11 @@ struct Issue281ColdStartRoundTripTests { /// reconnect, not an open that hangs on a speculative request nothing depends on. @Test("a fetch that is not going to land does not hold the read") func tailWaitIsBounded() async throws { + // The suffix stall has to outlast any pause the test itself can be handed: at 3 s, a test + // task resumed late found the fetch landed and no fallback left to observe. let stalling = ThrottledOriginServer( totalSize: fileSize, - firstByteDelayUs: { isSuffix in isSuffix ? 3_000_000 : 0 }) + firstByteDelayUs: { isSuffix in isSuffix ? 60_000_000 : 0 }) let server = try #require(stalling) defer { server.stop() } let reader = makeReader(server) @@ -137,7 +147,9 @@ struct Issue281ColdStartRoundTripTests { let elapsed = Date().timeIntervalSince(startedAt) #expect(got == 4096, "tail read returned \(got)") - #expect(elapsed < 2.0, "the read waited \(elapsed)s on a fetch that had not landed") + // Against the 60 s stall, not against the budget: a loaded runner measures a slower first + // byte and spends seconds on the fallback connection, and either is a healthy read. + #expect(elapsed < 30.0, "the read waited \(elapsed)s on a fetch that had not landed") #expect(server.rangeRequestCount > requestsBefore, "the read never fell back to a connection: \(server.requestedRanges)") } @@ -284,14 +296,16 @@ struct Issue281ColdStartRoundTripTests { defer { reader.markClosed(); reader.close() } try reader.open() + try await waitFor { server.requests.contains(where: { $0.range?.contains("bytes=-") == true }) } // Give the fetch time to do the wrong thing if it is going to. - try? await Task.sleep(nanoseconds: 500_000_000) + try await Task.sleep(nanoseconds: 500_000_000) - #expect(server.requests.contains(where: { $0.range?.contains("bytes=-") == true }), - "the tail prefetch never went out, so this proves nothing") // Some bytes may be in flight before the cancel lands; what must not happen is the body - // being taken. Anything near bodyOnOffer means the response was accepted. - #expect(server.bodyBytesWritten < 4 * 1024 * 1024, + // being taken. Anything near bodyOnOffer means the response was accepted. The count is what + // the server's write() handed to the kernel, and the loopback socket buffers take a few MB + // of one write without the client reading a byte (exactly 4 MB, measured), so the bound + // sits between that and the offer rather than at the buffer size. + #expect(server.bodyBytesWritten < bodyOnOffer / 2, "the 200 body was being downloaded: \(server.bodyBytesWritten) bytes written") } @@ -327,7 +341,7 @@ struct Issue281ColdStartRoundTripTests { let second = AVIOReader(url: url) defer { second.markClosed(); second.close() } try second.open() - try? await Task.sleep(nanoseconds: 300_000_000) + try await Task.sleep(nanoseconds: 300_000_000) let suffixRequests = server.requests.filter { $0.range?.contains("bytes=-") == true } #expect(suffixRequests.count == 1, diff --git a/Tests/AetherEngineTests/Issue295RangeBoundaryRefetchTests.swift b/Tests/AetherEngineTests/Issue295RangeBoundaryRefetchTests.swift index 03947c8c4..c10288e4a 100644 --- a/Tests/AetherEngineTests/Issue295RangeBoundaryRefetchTests.swift +++ b/Tests/AetherEngineTests/Issue295RangeBoundaryRefetchTests.swift @@ -47,9 +47,9 @@ struct Issue295RangeBoundaryRefetchTests { #expect(n > 0, "read failed at offset \(read)") if n <= 0 { break } read += Int64(n) - try? await Task.sleep(nanoseconds: 6_000_000) + try await Task.sleep(nanoseconds: 6_000_000) } - try? await Task.sleep(nanoseconds: 200_000_000) + try await Task.sleep(nanoseconds: 200_000_000) // #310 changed what "no re-fetch" looks like on the wire. A connection can now be // ENDED at winHighWater with the tail of its range undelivered, and the refill then diff --git a/Tests/AetherEngineTests/Issue306SoftwareTelemetryTests.swift b/Tests/AetherEngineTests/Issue306SoftwareTelemetryTests.swift index 0d986d603..41bb0989f 100644 --- a/Tests/AetherEngineTests/Issue306SoftwareTelemetryTests.swift +++ b/Tests/AetherEngineTests/Issue306SoftwareTelemetryTests.swift @@ -10,6 +10,7 @@ import AVFoundation /// have, so bitrate, throughput and transferred bytes were a hard zero for the whole session rather /// than the real numbers. And the read-ahead the path does hold was computed for the memprobe only, /// so nothing on the public surface answered "is the network keeping up" where it matters most. +@Suite(.timeLimit(.minutes(2))) @MainActor struct Issue306SoftwareTelemetryTests { @@ -100,8 +101,7 @@ struct Issue306SoftwareTelemetryTests { accumulatedFrameDelaySeconds: 0.21) }) sampler.start() - let published = try await waitFor(upTo: .seconds(90)) { engine.diagnostics.liveTelemetry != nil } - #expect(published) + try await waitFor { engine.diagnostics.liveTelemetry != nil } let snapshot = engine.diagnostics.liveTelemetry #expect(snapshot?.displayCushionSeconds == 0.36) #expect(snapshot?.readerWindowAheadBytes == 3_145_728) @@ -120,8 +120,7 @@ struct Issue306SoftwareTelemetryTests { SoftwareReadings(displayCushionSeconds: 0.02) }) sampler.start() - let published = try await waitFor(upTo: .seconds(90)) { engine.diagnostics.liveTelemetry != nil } - #expect(published) + try await waitFor { engine.diagnostics.liveTelemetry != nil } #expect(engine.diagnostics.liveTelemetry?.forwardBufferSeconds == nil) #expect(engine.diagnostics.liveTelemetry?.displayCushionSeconds == 0.02) sampler.stop() @@ -135,8 +134,7 @@ struct Issue306SoftwareTelemetryTests { let engine = try makeSoftwareEngine() let sampler = LiveTelemetrySampler(engine: engine, softwareRead: { _ in SoftwareReadings() }) sampler.start() - let published = try await waitFor(upTo: .seconds(90)) { engine.diagnostics.liveTelemetry != nil } - #expect(published) + try await waitFor { engine.diagnostics.liveTelemetry != nil } #expect(engine.diagnostics.liveTelemetry?.droppedFrameCount == nil) #expect(engine.diagnostics.liveTelemetry?.displayCushionSeconds == nil) #expect(engine.diagnostics.liveTelemetry?.accumulatedFrameDelaySeconds == nil) @@ -162,8 +160,7 @@ struct Issue306SoftwareTelemetryTests { return SoftwareReadings(displayCushionSeconds: 0.36) }) sampler.start() - let readStarted = try await waitFor(upTo: .seconds(90)) { entered.get() } - #expect(readStarted) + try await waitFor { entered.get() } // Teardown seam: the session ends while the metrics read is still in flight. engine.playbackBackend = .none release.signal() @@ -185,8 +182,7 @@ struct Issue306SoftwareTelemetryTests { nativeRead: { _, _ in NativeAVFReadings(forwardBufferSeconds: 12.0) }, softwareRead: { _ in SoftwareReadings(displayCushionSeconds: 0.36, droppedFrameCount: 8) }) sampler.start() - let published = try await waitFor(upTo: .seconds(90)) { engine.diagnostics.liveTelemetry != nil } - #expect(published) + try await waitFor { engine.diagnostics.liveTelemetry != nil } #expect(engine.diagnostics.liveTelemetry?.forwardBufferSeconds == 12.0) #expect(engine.diagnostics.liveTelemetry?.displayCushionSeconds == nil) #expect(engine.diagnostics.liveTelemetry?.accumulatedFrameDelaySeconds == nil) diff --git a/Tests/AetherEngineTests/Issue309SilentTransportDeathTests.swift b/Tests/AetherEngineTests/Issue309SilentTransportDeathTests.swift index 01fc07eac..d3f5c4945 100644 --- a/Tests/AetherEngineTests/Issue309SilentTransportDeathTests.swift +++ b/Tests/AetherEngineTests/Issue309SilentTransportDeathTests.swift @@ -24,7 +24,7 @@ import Foundation /// other's timing is worth more than running them concurrently. The stall threshold and the consumer /// pace are deliberately NOT process-wide hooks: swift-testing runs suites in parallel, and a hook /// that every reader reads at init would reach into whatever suite happens to run alongside this one. -@Suite("Silent transport death (#309)", .serialized) +@Suite("Silent transport death (#309)", .serialized, .offCooperativePool) struct Issue309SilentTransportDeathTests { private static let totalSize: Int64 = 256 * 1024 * 1024 @@ -77,7 +77,7 @@ struct Issue309SilentTransportDeathTests { /// setting it would throttle the readers of every suite swift-testing happens to run in parallel /// with this one. Pacing here is local by construction. private static func read(_ reader: AVIOReader, bytes target: Int, sliceCap: Int = 256 * 1024, - deadline: TimeInterval = 30, bytesPerSecond: Int = 0) -> Int { + deadline: TimeInterval = 120, bytesPerSecond: Int = 0) -> Int { let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } var got = 0 @@ -93,6 +93,29 @@ struct Issue309SilentTransportDeathTests { return got } + // MARK: - The open keeps its own budget + + /// The watchdog's threshold is a verdict on a transfer that stopped, and the first byte of the + /// open is not that: `SourceOpenPolicy.firstByteTimeout` is the budget for it, and a host sets it + /// for an origin that is known to be slow to answer (a NAS spinning up). Ended at the stall + /// threshold instead, both open attempts were cut at it and the open failed with `noResponse`: + /// measured with this origin, 0.4 s opened and 0.8 s failed in 1.3 s, every time. That is also + /// the shape #309's own detection test failed in on a loaded CI runner, where a first byte took + /// longer than its 0.6 s threshold. + @Test("an open whose first byte is slower than the stall threshold still opens", + .timeLimit(.minutes(1))) + func slowFirstByteOpens() throws { + let serverMaybe = ThrottledOriginServer(totalSize: Self.totalSize, firstByteDelayUs: { _ in 1_500_000 }) + let server = try #require(serverMaybe) + defer { server.stop() } + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/movie.bin")!, + boundedInitialFetch: Self.firstRange, + connStallTimeout: 0.3) + defer { reader.markClosed(); reader.close() } + try reader.open() + #expect(Self.read(reader, bytes: 64 * 1024) == 64 * 1024) + } + // MARK: - Detection @Test("a flow that dies mid-window is ended without any read blocking on it", @@ -119,14 +142,14 @@ struct Issue309SilentTransportDeathTests { // wait for that range to complete before consuming. Then consume enough to put the refill on // the wire and far less than the 4 MB it delivers: from here on every read is satisfied from // the window, which is precisely the state that used to defer detection indefinitely. - try await waitFor(upTo: .seconds(10)) { !reader.hasLiveConnectionForTesting } + try await waitFor { !reader.hasLiveConnectionForTesting } #expect(Self.read(reader, bytes: 1024 * 1024) == 1024 * 1024) - try await waitFor(upTo: .seconds(5)) { server.requestedRanges.contains { $0.start == silenceOffset } } + try await waitFor { server.requestedRanges.contains { $0.start == silenceOffset } } #expect(server.requestedRanges.contains { $0.start == silenceOffset }, "the frontier refill never went out: \(server.requestedRanges)") // No reads at all from here: the consumer is parked, exactly as a paused player is. - try await waitFor(upTo: .seconds(stallTimeout * 6)) { !reader.hasLiveConnectionForTesting } + try await waitFor { !reader.hasLiveConnectionForTesting } #expect(!reader.hasLiveConnectionForTesting, "a connection that delivered nothing for \(stallTimeout)s is still installed") @@ -161,10 +184,10 @@ struct Issue309SilentTransportDeathTests { defer { reader.markClosed(); reader.close() } try reader.open() - try await waitFor(upTo: .seconds(10)) { !reader.hasLiveConnectionForTesting } + try await waitFor { !reader.hasLiveConnectionForTesting } #expect(Self.read(reader, bytes: 512 * 1024) == 512 * 1024) - try await waitFor(upTo: .seconds(5)) { server.requestedRanges.contains { $0.start == silenceOffset } } - try await waitFor(upTo: .seconds(stallTimeout * 6)) { !reader.hasLiveConnectionForTesting } + try await waitFor { server.requestedRanges.contains { $0.start == silenceOffset } } + try await waitFor { !reader.hasLiveConnectionForTesting } #expect(!reader.hasLiveConnectionForTesting, "a request answered with headers and no body stayed installed") @@ -209,8 +232,7 @@ struct Issue309SilentTransportDeathTests { // Read straight through the death. 7 MB is past everything the silenced generation and the // first range delivered (6 MB), so completing it can only happen through a replacement. let target = 7 * 1024 * 1024 - let got = Self.read(reader, bytes: target, deadline: 60, - bytesPerSecond: consumerBytesPerSecond) + let got = Self.read(reader, bytes: target, bytesPerSecond: consumerBytesPerSecond) #expect(got == target, "read stopped at \(got / 1024) KB of \(target / 1024) KB") let runway = try #require(probe.runwayAtRequest, @@ -235,7 +257,7 @@ struct Issue309SilentTransportDeathTests { // Nobody consumes: the window fills to high water, the connection is ended on purpose, and // from then on there is no delivery at all. That is the state the watchdog must NOT read as // a fault, or every paused player would reconnect on a timer. - try await waitFor(upTo: .seconds(5)) { reader.windowDiagnostics.parked } + try await waitFor { reader.windowDiagnostics.parked } try await Task.sleep(for: .seconds(stallTimeout * 4)) #expect(reader.windowDiagnostics.parked, "the high-water end must still own this state") diff --git a/Tests/AetherEngineTests/Issue314FrameTimeSequenceTests.swift b/Tests/AetherEngineTests/Issue314FrameTimeSequenceTests.swift index 6b4d4a8b9..46034ba15 100644 --- a/Tests/AetherEngineTests/Issue314FrameTimeSequenceTests.swift +++ b/Tests/AetherEngineTests/Issue314FrameTimeSequenceTests.swift @@ -135,7 +135,7 @@ struct Issue314FrameTimeSequenceTests { .enabled(if: fixtureExists("restart-witness-av.mp4"), "run Scripts/fetch-fixtures.sh to generate the witness clip"), .timeLimit(.minutes(2))) - func newNativeSessionOutranksTheOutgoingOne() throws { + func newNativeSessionOutranksTheOutgoingOne() async throws { let outgoingFrames = EpochCollector() let outgoing = HLSVideoEngine(url: fixtureURL("restart-witness-av.mp4"), dvModeAvailable: false) outgoing.setNativeVideoFrameTimeObserver { outgoingFrames.record($0) } @@ -162,14 +162,7 @@ struct Issue314FrameTimeSequenceTests { // A restart in the new session still outranks its own first epoch, so the within-session rule // (#260) is untouched by the process-wide draw. incoming.requestRestart(at: 1) - let deadline = Date().addingTimeInterval(30) - var restarted: [NativeVideoFrameTime] = [] - while Date() < deadline { - restarted = incomingFrames.snapshot().filter { $0.epoch > incomingEpoch } - if !restarted.isEmpty { break } - usleep(50_000) - } - #expect(!restarted.isEmpty, "restarted producer emitted no frame times within 30s") + try await waitFor { incomingFrames.snapshot().contains { $0.epoch > incomingEpoch } } } // MARK: - Helpers diff --git a/Tests/AetherEngineTests/Issue374FirstServeAccountTests.swift b/Tests/AetherEngineTests/Issue374FirstServeAccountTests.swift index 456bbcf31..e62f1cc40 100644 --- a/Tests/AetherEngineTests/Issue374FirstServeAccountTests.swift +++ b/Tests/AetherEngineTests/Issue374FirstServeAccountTests.swift @@ -148,14 +148,14 @@ final class Issue374FirstServeAccountTests: XCTestCase { let result = Issue374WaitResult() let finished = expectation(description: "startup waiter finished") Thread.detachNewThread { - result.store(provider.waitForFirstLiveSegment(timeout: 3)) + result.store(provider.waitForFirstLiveSegment(timeout: 120)) finished.fulfill() } while provider.parkedWaiterCount == 0 { usleep(200) } append(provider, index: 0) append(provider, index: 1) - wait(for: [finished], timeout: 2) + wait(for: [finished], timeout: 300) XCTAssertEqual(result.value, true) let accounted = tap.matching("first live manifest") diff --git a/Tests/AetherEngineTests/Issue377HeldConnectionTests.swift b/Tests/AetherEngineTests/Issue377HeldConnectionTests.swift index 5405c4b8c..f9e7d91db 100644 --- a/Tests/AetherEngineTests/Issue377HeldConnectionTests.swift +++ b/Tests/AetherEngineTests/Issue377HeldConnectionTests.swift @@ -39,7 +39,7 @@ private final class RecordingHeldDelegate: HeldSourceConnectionDelegate, @unchec var endError: Error? { lock.lock(); defer { lock.unlock() }; return _endError } @discardableResult - func waitForEnd(seconds: Double = 20) -> Bool { + func waitForEnd(seconds: Double = 120) -> Bool { finished.wait(timeout: .now() + seconds) == .success } @@ -354,7 +354,7 @@ struct Issue377HeldConnectionTests { /// fills, which is why #220's defect survived every local test it had). Each test that asserts a /// held count carries the pushed count next to it, because a harness in which the known shape looks /// the same as the new one decides nothing. -@Suite("#377 held connection in the reader") +@Suite("#377 held connection in the reader", .offCooperativePool) struct Issue377HeldReaderTests { /// Ranges the DATA path asked for, with the open-time speculative tail fetch excluded: it @@ -363,7 +363,7 @@ struct Issue377HeldReaderTests { server.requestedRanges.map(\.start).filter { $0 < totalSize - 1024 * 1024 } } - private func drain(_ reader: AVIOReader, bytes target: Int, timeout: TimeInterval = 60) -> Int { + private func drain(_ reader: AVIOReader, bytes target: Int, timeout: TimeInterval = 120) -> Int { let sliceCap = 256 * 1024 let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } @@ -417,7 +417,8 @@ struct Issue377HeldReaderTests { "a held connection asked \(heldAsks.count) times for one continuous read: \(heldAsks)") } - @Test("a PAUSED consumer ends the held connection inside its budget and holds no flow") + @Test("a PAUSED consumer ends the held connection inside its budget and holds no flow", + .timeLimit(.minutes(2))) func pausedConsumerEndsTheHeldConnection() async throws { let totalSize: Int64 = 256 * 1024 * 1024 let server = try #require(ThrottledOriginServer(totalSize: totalSize)) @@ -430,8 +431,11 @@ struct Issue377HeldReaderTests { try reader.open() // Nobody consumes AND the consumer says it is paused. #310's worst episode came out of - // exactly this state, so the connection has to be gone rather than merely quiet. - try await Task.sleep(for: .seconds(8)) + // exactly this state, so the connection has to be gone rather than merely quiet. The budget + // runs from the moment the window is full, which is the origin's pace, so wait for the end + // itself and then leave a window in which a re-request with nothing draining would show. + try await waitFor { !reader.hasLiveConnectionForTesting && reader.windowDiagnostics.parked } + try await Task.sleep(for: .seconds(1)) #expect(!reader.hasLiveConnectionForTesting, "a paused consumer must hold no flow, which is the #310 invariant 6.11.0 shipped") @@ -506,7 +510,8 @@ struct Issue377HeldReaderTests { "a stretch with no read outstanding is not a gap; drawing again must not cost a request: \(asks)") } - @Test("consumption after an idle end refills at the frontier without going backwards") + @Test("consumption after an idle end refills at the frontier without going backwards", + .timeLimit(.minutes(2))) func refillAfterIdleEnd() async throws { let totalSize: Int64 = 256 * 1024 * 1024 let server = try #require(ThrottledOriginServer(totalSize: totalSize)) @@ -520,7 +525,10 @@ struct Issue377HeldReaderTests { reader.heldPausedBudgetSeconds = 3 try reader.open() - try await Task.sleep(for: .seconds(8)) // past the paused budget + // The paused budget runs from the moment the window is full, and filling it is the origin's + // pace: on a loaded runner that alone outlasted a fixed 8 s sleep, the connection was never + // ended, and the drain below rode it (`[0]`). Wait for the end itself. + try await waitFor { !reader.hasLiveConnectionForTesting } let afterIdle = dataRanges(server, totalSize: totalSize) #expect(afterIdle.count == 1) @@ -530,8 +538,10 @@ struct Issue377HeldReaderTests { "the reader did not resume after the pause ended") let asks = dataRanges(server, totalSize: totalSize) - #expect(asks.count == 2, - "resuming should cost exactly one re-request at the frontier, got \(asks)") + // `#require`, not `#expect`: `asks[1]` below traps on a shorter list, and a trap takes the + // whole test process down with every result still buffered in it. + try #require(asks.count == 2, + "resuming should cost exactly one re-request at the frontier, got \(asks)") #expect(asks == asks.sorted(), "a refill went backwards past the frontier: \(asks)") #expect(asks[1] > 0, "the refill asked from byte 0 again instead of at the frontier") } diff --git a/Tests/AetherEngineTests/Issue378SourceRefusedTests.swift b/Tests/AetherEngineTests/Issue378SourceRefusedTests.swift index 8f0557208..78035ecda 100644 --- a/Tests/AetherEngineTests/Issue378SourceRefusedTests.swift +++ b/Tests/AetherEngineTests/Issue378SourceRefusedTests.swift @@ -69,7 +69,7 @@ struct Issue378SourceRefusedTests { "expected exactly one suffix tail prefetch: \(requests)") } - @Test("a refusal does not latch the suffix-range denial for the origin") + @Test("a refusal does not latch the suffix-range denial for the origin", .timeLimit(.minutes(2))) func refusalDoesNotLatchSuffixRanges() async throws { let server = try Self.refusingOrigin() defer { server.stop() } @@ -80,14 +80,16 @@ struct Issue378SourceRefusedTests { first.markClosed(); first.close() // Let the tail prefetch's own outcome land: the 403 arrives at once from a loopback origin, // but the outcome closure runs on the delegate queue after open() has already thrown. - try? await Task.sleep(nanoseconds: 300_000_000) + try await Task.sleep(nanoseconds: 300_000_000) #expect(SuffixRangeSupport.shared.denialReason(for: url) == nil, "a 403 during the refusal latched the origin: \(SuffixRangeSupport.shared.denialReason(for: url) ?? "")") let second = AVIOReader(url: url) defer { second.markClosed(); second.close() } #expect(throws: AVIOReaderError.httpStatus(403)) { try second.open() } - try? await Task.sleep(nanoseconds: 300_000_000) + try await waitFor { server.requests.filter { $0.range?.hasPrefix("bytes=-") == true }.count >= 2 } + // A third ask, if one is coming, gets the same chance the original fixed wait gave it. + try await Task.sleep(nanoseconds: 300_000_000) let suffixRequests = server.requests.filter { $0.range?.hasPrefix("bytes=-") == true } #expect(suffixRequests.count == 2, diff --git a/Tests/AetherEngineTests/Issue388RedirectChainBudgetTests.swift b/Tests/AetherEngineTests/Issue388RedirectChainBudgetTests.swift index 89b5b8075..21243487b 100644 --- a/Tests/AetherEngineTests/Issue388RedirectChainBudgetTests.swift +++ b/Tests/AetherEngineTests/Issue388RedirectChainBudgetTests.swift @@ -247,7 +247,7 @@ struct Issue388RedirectChainBudgetTests { #expect(n > 0, "forward read failed at \(read)") if n <= 0 { break } read += Int64(n) - try? await Task.sleep(nanoseconds: 2_000_000) + try await Task.sleep(nanoseconds: 2_000_000) } // The books, not the moment. `inflight` was a wall-clock reading: it is 1 only while the diff --git a/Tests/AetherEngineTests/Issue395RendererTimelineTests.swift b/Tests/AetherEngineTests/Issue395RendererTimelineTests.swift new file mode 100644 index 000000000..99081e288 --- /dev/null +++ b/Tests/AetherEngineTests/Issue395RendererTimelineTests.swift @@ -0,0 +1,80 @@ +import Foundation +import AVFoundation +import CoreMedia +import Testing +@testable import AetherEngine + +/// AE#395: a software session hands its renderers stamps relative to a session origin, so an AirPlay +/// receiver that fails past 2^31 samples of 48 kHz never sees a broadcast clock. The source axis above +/// the renderers must not move. +@Suite("AE#395 renderer timeline") +struct Issue395RendererTimelineTests { + + @Test("a source that starts near zero keeps the stamps it always had") + func ordinarySourceIsUntouched() { + #expect(RendererTimelinePolicy.origin(firstSourceSeconds: 0) == 0) + #expect(RendererTimelinePolicy.origin(firstSourceSeconds: 599) == 0) + #expect(RendererTimelinePolicy.origin(firstSourceSeconds: RendererTimelinePolicy.headroomSeconds) == 0) + #expect(RendererTimelinePolicy.origin(firstSourceSeconds: .nan) == 0) + #expect(RendererTimelinePolicy.origin(firstSourceSeconds: -5) == 0) + } + + @Test("every clock Jos measured on the Belkin starts its renderers well below the 44739 s line") + func measuredClocksLandBelowTheLine() { + let line = Double(Int32.max) / 48000 + for first in [40001.970, 50001.970, 59670.451, 59671.841, 95000.0] { + let origin = RendererTimelinePolicy.origin(firstSourceSeconds: first) + let start = first - origin + #expect(start >= RendererTimelinePolicy.headroomSeconds) + #expect(start < RendererTimelinePolicy.headroomSeconds + 1) + #expect(start < line) + } + } + + @Test("the origin latches once and both directions are inverses") + func latchesOnceAndRoundTrips() { + let timeline = RendererTimeline() + #expect(timeline.origin == nil) + let first = timeline.rendererTime(forSource: CMTime(seconds: 59670.451, preferredTimescale: 90000)) + #expect(timeline.origin == 48870) + #expect(abs(first.seconds - 10800.451) < 0.001) + + // A later, earlier and much later stamp all use the same origin. + for source in [59671.0, 59000.0, 70000.0] { + let renderer = timeline.rendererTime(forSource: CMTime(seconds: source, preferredTimescale: 90000)) + #expect(abs(renderer.seconds - (source - 48870)) < 0.001) + #expect(abs(timeline.sourceTime(forRenderer: renderer).seconds - source) < 0.001) + } + #expect(timeline.origin == 48870) + } + + @Test("a read before the first stamp neither latches nor shifts") + func readBeforeLatchIsIdentity() { + let timeline = RendererTimeline() + let t = CMTime(seconds: 12, preferredTimescale: 90000) + #expect(timeline.sourceTime(forRenderer: t) == t) + #expect(timeline.origin == nil) + #expect(timeline.rendererTime(forSource: .invalid) == .invalid) + #expect(timeline.origin == nil) + } + + @Test("the clock anchor reads back on the source axis while the synchronizer runs near the origin") + func audioOutputClockRoundTrips() { + let output = AudioOutput() + output.seekClock(to: CMTime(seconds: 59670.451, preferredTimescale: 90000), rate: 0) + #expect(abs(output.currentTimeSeconds - 59670.451) < 0.01) + #expect(abs(output.synchronizer.currentTime().seconds - 10800.451) < 0.01) + let timebaseSeconds = CMTimebaseGetTime(output.sourceTimebase).seconds + #expect(abs(timebaseSeconds - 59670.451) < 0.01) + output.stop() + } + + @Test("an ordinary session's synchronizer still runs on the source PTS") + func audioOutputOrdinarySessionUnchanged() { + let output = AudioOutput() + output.seekClock(to: CMTime(seconds: 12.5, preferredTimescale: 90000), rate: 0) + #expect(abs(output.synchronizer.currentTime().seconds - 12.5) < 0.01) + #expect(output.sourceTimebase === output.synchronizer.timebase) + output.stop() + } +} diff --git a/Tests/AetherEngineTests/Issue406NoCutWatchdogTests.swift b/Tests/AetherEngineTests/Issue406NoCutWatchdogTests.swift index 09719fa04..f13ed9425 100644 --- a/Tests/AetherEngineTests/Issue406NoCutWatchdogTests.swift +++ b/Tests/AetherEngineTests/Issue406NoCutWatchdogTests.swift @@ -142,6 +142,34 @@ struct Issue406NoCutWatchdogTests { // MARK: - Parked pump + @Test("a replay scan is not a cutter wedge while packets keep arriving") + func replayScanTracksSourceProgress() { + let w = makeWatchdog() + w.noteFinalize(at: t0) + w.setReplayChecking(true, at: t0.addingTimeInterval(1)) + for second in stride(from: 2, through: 50, by: 2) { + w.noteReplayPacketRead(at: t0.addingTimeInterval(Double(second))) + #expect(w.evaluate(now: t0.addingTimeInterval(Double(second) + 1)) == nil) + } + w.setReplayChecking(false, at: t0.addingTimeInterval(51)) + #expect(w.evaluate(now: t0.addingTimeInterval(60)) == nil) + } + + @Test("a replay scan still aborts a source that stops delivering packets") + func replayScanSourceStarvation() { + let w = makeWatchdog() + w.noteFinalize(at: t0) + w.setReplayChecking(true, at: t0.addingTimeInterval(1)) + w.noteReplayPacketRead(at: t0.addingTimeInterval(2)) + #expect(w.evaluate(now: t0.addingTimeInterval(36)) == nil) + guard case .exitForRetune(let window)? = w.evaluate(now: t0.addingTimeInterval(38)) else { + Issue.record("expected a timeout after the last replay packet") + return + } + #expect(window.progress == 1) + #expect(window.isWedge == false) + } + @Test("a parked pump is not judged, and resuming re-arms the window") func parkedPumpIsNotJudged() { // The live headroom park sleeps the read thread on purpose (a consumer that stopped diff --git a/Tests/AetherEngineTests/Issue410SourceStallVisibilityTests.swift b/Tests/AetherEngineTests/Issue410SourceStallVisibilityTests.swift index e383813ad..cb3cf52b5 100644 --- a/Tests/AetherEngineTests/Issue410SourceStallVisibilityTests.swift +++ b/Tests/AetherEngineTests/Issue410SourceStallVisibilityTests.swift @@ -9,7 +9,7 @@ import Foundation /// place, which is what makes the exit's honest `.exhausted` survive long enough to be read. /// /// `.serialized`: these tests mutate the process-wide backoff-scale test hook. -@Suite("Source-stall visibility (#410)", .serialized) +@Suite("Source-stall visibility (#410)", .serialized, .offCooperativePool) struct Issue410SourceStallVisibilityTests { /// The refusal these tests stage arms the request-rate pacer's wall-clock quiet ladder, which @@ -144,7 +144,7 @@ struct Issue410SourceStallVisibilityTests { try reader.open() #expect(Self.readOnce(reader, at: 0, bytes: 64 * 1024) > 0) - #expect(Self.awaitRangeDelivered(reader), "the bounded initial range never completed") + try await Self.awaitRangeDelivered(reader) // Past winLookback + winTrimBatch, so a later read at 0 reaches the retained head span rather // than the window it walked out of. @@ -173,13 +173,8 @@ struct Issue410SourceStallVisibilityTests { // MARK: - Reader drivers (same shape as ServedFromMemoryProgressTests) - private static func awaitRangeDelivered(_ reader: AVIOReader) -> Bool { - let deadline = Date().addingTimeInterval(20) - while Date() < deadline { - if !reader.hasLiveConnectionForTesting { return true } - Thread.sleep(forTimeInterval: 0.01) - } - return false + private static func awaitRangeDelivered(_ reader: AVIOReader) async throws { + try await waitFor { !reader.hasLiveConnectionForTesting } } @discardableResult diff --git a/Tests/AetherEngineTests/Issue436ResumeRateTests.swift b/Tests/AetherEngineTests/Issue436ResumeRateTests.swift index eaed3067a..0de48121b 100644 --- a/Tests/AetherEngineTests/Issue436ResumeRateTests.swift +++ b/Tests/AetherEngineTests/Issue436ResumeRateTests.swift @@ -124,6 +124,39 @@ struct Issue436ResumeRateTests { #expect(host.avPlayer.defaultRate == 1.0) } + // MARK: - #730: a speed set while paused + + @Test("a speed set while paused is kept for the resume and does not start playback") + func speedWhilePausedStaysPaused() throws { + let engine = try AetherEngine() + let host = NativeAVPlayerHost() + engine.nativeHost = host + engine.state = .paused + + engine.setRate(1.5) + #expect(!host.transportIntentIsPlaying, "a speed change must not be a play press") + #expect(host.avPlayer.rate == 0) + #expect(host.avPlayer.defaultRate == 1.5, "the next play() has to start at the new speed") + #expect(engine.desiredRate == 1.5) + #expect(engine.state == .paused) + + // Zero while paused is still a pause, and must not overwrite the speed just set. + engine.setRate(0) + #expect(host.avPlayer.defaultRate == 1.5) + } + + @Test("a speed set while playing still re-rates the transport") + func speedWhilePlayingReRates() throws { + let engine = try AetherEngine() + let host = NativeAVPlayerHost() + engine.nativeHost = host + engine.state = .playing + + engine.setRate(1.25) + #expect(host.transportIntentIsPlaying) + #expect(host.avPlayer.defaultRate == 1.25) + } + // MARK: - What the memory belongs to @Test("a speed belongs to the item it was set on") diff --git a/Tests/AetherEngineTests/Issue440LiveJoinRollTests.swift b/Tests/AetherEngineTests/Issue440LiveJoinRollTests.swift index 2a3f88d41..b87dd36dc 100644 --- a/Tests/AetherEngineTests/Issue440LiveJoinRollTests.swift +++ b/Tests/AetherEngineTests/Issue440LiveJoinRollTests.swift @@ -427,7 +427,7 @@ struct Issue440LiveJoinRollTests { let contract = NativeAVPlayerHost.SessionLoadContract( isLive: true, liveJoinStartsImmediately: true, forwardBufferDuration: 0, surfaceEndFailures: true, httpHeaders: ["X-Emby-Token": "t"], armIngestFallback: false, - readinessDeadline: 20) + readinessDeadline: 20, nativeVideoFrameDiagnostics: true, nativeVideoFrameRecovery: true) host.load(url: URL(string: "http://127.0.0.1:1/live/media.m3u8")!, startPosition: nil, contract: contract) #expect(host.sessionContract == contract) @@ -443,7 +443,8 @@ struct Issue440LiveJoinRollTests { func newLoadStatesItsOwnContract() { let host = NativeAVPlayerHost() host.load(url: URL(string: "http://127.0.0.1:1/live/media.m3u8")!, startPosition: nil, - contract: .init(isLive: true, liveJoinStartsImmediately: true)) + contract: .init(isLive: true, liveJoinStartsImmediately: true, + nativeVideoFrameDiagnostics: true, nativeVideoFrameRecovery: true)) host.load(url: URL(string: "http://127.0.0.1:1/vod/media.m3u8")!, startPosition: 0, contract: .init()) #expect(host.sessionContract == NativeAVPlayerHost.SessionLoadContract()) diff --git a/Tests/AetherEngineTests/Issue445VMRegionCensusTests.swift b/Tests/AetherEngineTests/Issue445VMRegionCensusTests.swift index 5f2e17cb3..79c0ece64 100644 --- a/Tests/AetherEngineTests/Issue445VMRegionCensusTests.swift +++ b/Tests/AetherEngineTests/Issue445VMRegionCensusTests.swift @@ -9,7 +9,7 @@ import Darwin.Mach /// an IOSurface, a mapped file kept dirty) leaves no name behind, only a slope. /// /// Serialized: the census keeps a process-wide baseline, and Swift Testing runs cases in parallel. -@Suite(.serialized) +@Suite(.serialized, .offCooperativePool) struct Issue445VMRegionCensusTests { @Test("census is opt-in and answers nothing while disabled") @@ -33,28 +33,34 @@ struct Issue445VMRegionCensusTests { defer { VMRegionCensus.isEnabled = false } VMRegionCensus.markBaseline() + // An application-specific tag of its own, not the heap: the census is process-wide, and a + // test running in parallel that frees a large MALLOC block between baseline and census + // took this growth back out of the MALLOC tallies, so a 96 MB write read as less than 64. + let tag = 242 let size = 96 << 20 - let buffer = UnsafeMutableRawPointer.allocate(byteCount: size, alignment: 4096) - defer { buffer.deallocate() } + let mapped = mmap(nil, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, Int32(bitPattern: UInt32(tag) << 24), 0) + guard let buffer = mapped, buffer != MAP_FAILED else { + Issue.record("mmap failed: \(errno)") + return + } + defer { munmap(buffer, size) } // Footprint counts DIRTY pages, so the allocation has to be written to before it exists as - // far as this census is concerned. A calloc'd region that is never touched is a promise. + // far as this census is concerned. A mapping that is never touched is a promise. memset(buffer, 0xAB, size) guard let result = VMRegionCensus.census() else { Issue.record("census returned nil while enabled") return } + let own = result.tallies.first { $0.tag == tag } + #expect((own?.deltaBytes ?? 0) >= 64 << 20, + "expected the 96 MB write to show as growth of tag \(tag), saw \((own?.deltaBytes ?? 0) >> 20) MB") let grownBytes = result.tallies.reduce(0) { $0 + max(0, $1.deltaBytes) } - #expect(grownBytes >= 64 << 20, "expected the 96 MB write to show as growth, saw \(grownBytes >> 20) MB") - - let top = result.tallies.max { $0.deltaBytes < $1.deltaBytes } - #expect(top != nil) - #expect((top?.deltaBytes ?? 0) >= 64 << 20) + #expect(grownBytes >= 64 << 20, "the total counts the tagged growth too, saw \(grownBytes >> 20) MB") let fragment = VMRegionCensus.probeFragment() #expect(fragment.contains("vmGrewMB=")) #expect(fragment.contains("vmTagTop=")) - #expect(fragment.contains("MALLOC"), "a large heap allocation should land in a MALLOC tag, saw \(fragment)") } @Test("the fragment states growth since the baseline, which is the figure that can be checked") diff --git a/Tests/AetherEngineTests/Issue450ConcurrentReaderCeilingTests.swift b/Tests/AetherEngineTests/Issue450ConcurrentReaderCeilingTests.swift index 69b9967f3..f41d06764 100644 --- a/Tests/AetherEngineTests/Issue450ConcurrentReaderCeilingTests.swift +++ b/Tests/AetherEngineTests/Issue450ConcurrentReaderCeilingTests.swift @@ -45,12 +45,11 @@ struct Issue450ConcurrentReaderCeilingTests { } } - private static func read(_ reader: AVIOReader, bytes target: Int, deadline: TimeInterval) -> Int { + private static func read(_ reader: AVIOReader, bytes target: Int) -> Int { let buf = UnsafeMutablePointer.allocate(capacity: target) defer { buf.deallocate() } var got = 0 - let stopAt = Date().addingTimeInterval(deadline) - while got < target && Date() < stopAt { + while got < target { let n = reader.read(into: buf, size: Int32(target - got)) if n <= 0 { break } got += Int(n) @@ -85,6 +84,8 @@ struct Issue450ConcurrentReaderCeilingTests { defer { session.invalidateAndCancel() } Self.fireOpenEnded(session, port: server.port, count: 3) + try await waitFor { Self.pathsSeen(server).count >= 2 } + // The window the third request is given to show up and must not use. try await Task.sleep(for: .seconds(5)) #expect(Self.pathsSeen(server).count == 2, @@ -102,7 +103,7 @@ struct Issue450ConcurrentReaderCeilingTests { defer { session.invalidateAndCancel() } Self.fireOpenEnded(session, port: server.port, count: 3) - try await Task.sleep(for: .seconds(5)) + try await waitFor { Self.pathsSeen(server).count >= 3 } #expect(Self.pathsSeen(server).count == 3, "an open-ended request was parked by the long-lived pool: \(Self.pathsSeen(server))") @@ -180,8 +181,8 @@ struct Issue450ConcurrentReaderCeilingTests { // Let the first range complete, then consume enough to put the refill on the wire. That // refill is the generation that receives headers and no body. - try await waitFor(upTo: .seconds(10)) { !reader.hasLiveConnectionForTesting } - #expect(Self.read(reader, bytes: 512 * 1024, deadline: 10) == 512 * 1024) + try await waitFor { !reader.hasLiveConnectionForTesting } + #expect(Self.read(reader, bytes: 512 * 1024) == 512 * 1024) // The capture sees every reader in the process, so the reader's own label picks its line. func reported() -> [String] { sink.matching(label).filter { $0.contains("no first byte after") } } try await waitFor { !reported().isEmpty } diff --git a/Tests/AetherEngineTests/Issue455ForcedDVRouteTests.swift b/Tests/AetherEngineTests/Issue455ForcedDVRouteTests.swift index f0a6f49e8..96ea99fd1 100644 --- a/Tests/AetherEngineTests/Issue455ForcedDVRouteTests.swift +++ b/Tests/AetherEngineTests/Issue455ForcedDVRouteTests.swift @@ -160,6 +160,37 @@ struct Issue455ForcedDVRouteTests { #expect(r.supplementalCodecs == "dvh1.08.06/db4h") } + @Test("P7 without the opt-in is converted and served as 8.1 on a non-DV display") + func profile7DefaultRouteOnNonDVDisplay() throws { + let r = try Self.route(profile: 7, compat: 6, dvDisplay: false, forceDV: false) + #expect(r.codecTagOverride == "hvc1") + #expect(r.videoRange == .pq) + #expect(r.supplementalCodecs == "dvh1.08.06/db1p") + #expect(r.doviConfig == .rewriteToProfile81) + #expect(r.convertP7ToProfile81) + #expect(r.dvVariant == .profile7) + } + + @Test("P7 with the opt-in gets the Profile 5 packaging of the 8.1 it is converted to") + func profile7ForcedRouteClaimsProfile5() throws { + let r = try Self.route(profile: 7, compat: 6, dvLevel: 9, dvDisplay: false, forceDV: true) + #expect(r.codecTagOverride == "dvh1") + #expect(r.primaryCodecs == "dvh1.05.09") + #expect(r.supplementalCodecs == nil) + #expect(r.doviConfig == .rewriteToProfile5) + // The packets still have to become 8.1: a P5 claim over a P7 RPU and its EL is the mixed shape #135 guards. + #expect(r.convertP7ToProfile81) + } + + @Test("P7 on a DV display ignores the opt-in") + func profile7DVDisplayIgnoresTheOptIn() throws { + let r = try Self.route(profile: 7, compat: 6, dvDisplay: true, forceDV: true) + #expect(r.codecTagOverride == "hvc1") + #expect(r.supplementalCodecs == "dvh1.08.06/db1p") + #expect(r.doviConfig == .rewriteToProfile81) + #expect(r.convertP7ToProfile81) + } + @Test("P5 is unaffected: it was already served this way") func profile5Untouched() throws { let r = try Self.route(profile: 5, compat: 0, dvDisplay: false, forceDV: true) diff --git a/Tests/AetherEngineTests/Issue458AudioLanguageMetadataTests.swift b/Tests/AetherEngineTests/Issue458AudioLanguageMetadataTests.swift index 6ddedfc32..61ad82fc7 100644 --- a/Tests/AetherEngineTests/Issue458AudioLanguageMetadataTests.swift +++ b/Tests/AetherEngineTests/Issue458AudioLanguageMetadataTests.swift @@ -169,8 +169,12 @@ struct Issue458AudioLanguageMetadataTests { /// AVFoundation reads an audio language from on an HLS asset: with the tag absent, an fMP4 whose mdhd /// says "deu" still reports `AVAssetTrack.languageCode == nil` and builds no audible selection group. private final class AudioRenditionMockProvider: HLSSegmentProvider, @unchecked Sendable { - let audio: (language: String, name: String)? - init(audio: (language: String, name: String)?) { self.audio = audio } + let audio: (language: String?, name: String)? + let channels: String? + init(audio: (language: String?, name: String)?, channels: String? = nil) { + self.audio = audio + self.channels = channels + } func initSegment() -> Data? { Data([0x00]) } func mediaSegment(at index: Int) -> Data? { Data([0x00]) } var segmentCount: Int { 1 } @@ -178,7 +182,8 @@ private final class AudioRenditionMockProvider: HLSSegmentProvider, @unchecked S var playlistType: HLSPlaylistType { .vod } var masterCodecs: String? { "hvc1.1.6.L120.90,mp4a.40.2" } var masterVideoRange: HLSVideoRange? { .sdr } - var masterAudioRendition: (language: String, name: String)? { audio } + var masterAudioRendition: (language: String?, name: String)? { audio } + var masterAudioChannels: String? { channels } } struct Issue458AudioRenditionPlaylistTests { diff --git a/Tests/AetherEngineTests/Issue493HostDisplayAssertionTests.swift b/Tests/AetherEngineTests/Issue493HostDisplayAssertionTests.swift index 4f2dc0619..dc1ece479 100644 --- a/Tests/AetherEngineTests/Issue493HostDisplayAssertionTests.swift +++ b/Tests/AetherEngineTests/Issue493HostDisplayAssertionTests.swift @@ -210,8 +210,10 @@ struct Issue493HostDisplayAssertionTests { /// `videoFormat`, the tvOS criteria request, and the HDR readiness that rides along. Measured the /// same day against the matched Dolby P5 / P8.1 / P8.4 grades on macOS: master, media playlist, /// init.mp4 and seg0.mp4 came back md5-identical with and without the claim. - @Test("AE#493: the assertion does not move the packaging of P5, P8.1 or P8.4", - arguments: [(UInt8(5), UInt8(0)), (UInt8(8), UInt8(1)), (UInt8(8), UInt8(4))]) + /// Profile 7 joined them once its conversion to 8.1 stopped being gated on the display: the converted + /// stream is a P8.1 and is packaged as one either way. + @Test("AE#493: the assertion does not move the packaging of P5, P7, P8.1 or P8.4", + arguments: [(UInt8(5), UInt8(0)), (UInt8(7), UInt8(6)), (UInt8(8), UInt8(1)), (UInt8(8), UInt8(4))]) func assertionLeavesTheHEVCPackagingAlone(grade: (profile: UInt8, compat: UInt8)) throws { let trc: AVColorTransferCharacteristic = grade.compat == 4 ? AVCOL_TRC_ARIB_STD_B67 : AVCOL_TRC_SMPTE2084 let asserted = try Self.route(profile: grade.profile, compat: grade.compat, trc: trc, dvDisplay: true) @@ -219,19 +221,13 @@ struct Issue493HostDisplayAssertionTests { #expect(Self.packaging(asserted) == Self.packaging(control)) } - /// The two grades where it still does, so "the claim changes nothing" cannot quietly become the rule: - /// P7 needs the per-packet RPU conversion to 8.1 and its supplemental, and the AV1 DV record is read - /// only on a display that takes it, so a non-DV display gets the base layer with no supplemental and - /// no Dolby Vision variant at all. Since #547 both AV1 branches carry the same `av01` sample entry, - /// the base layer's own; what the claim moves there is the supplemental entry beside it. - @Test("AE#493: P7 and AV1 Dolby Vision are still packaged by the claim") + /// The grade where it still does, so "the claim changes nothing" cannot quietly become the rule: the + /// AV1 DV record is read only on a display that takes it, so a non-DV display gets the base layer with + /// no supplemental and no Dolby Vision variant at all. Since #547 both AV1 branches carry the same + /// `av01` sample entry, the base layer's own; what the claim moves there is the supplemental entry + /// beside it. + @Test("AE#493: AV1 Dolby Vision is still packaged by the claim") func assertionStillMovesTheGatedGrades() throws { - let p7Asserted = try Self.route(profile: 7, compat: 0, dvDisplay: true) - let p7Control = try Self.route(profile: 7, compat: 0, dvDisplay: false) - #expect(Self.packaging(p7Asserted) != Self.packaging(p7Control)) - #expect(p7Asserted.convertP7ToProfile81) - #expect(p7Control.convertP7ToProfile81 == false) - let av1Asserted = try Self.route(codecID: AV_CODEC_ID_AV1, profile: 10, compat: 1, dvDisplay: true) let av1Control = try Self.route(codecID: AV_CODEC_ID_AV1, profile: 10, compat: 1, dvDisplay: false) #expect(Self.packaging(av1Asserted) != Self.packaging(av1Control)) diff --git a/Tests/AetherEngineTests/Issue535RefusalNeedsEligibilityTests.swift b/Tests/AetherEngineTests/Issue535RefusalNeedsEligibilityTests.swift index 200bb906e..fda813023 100644 --- a/Tests/AetherEngineTests/Issue535RefusalNeedsEligibilityTests.swift +++ b/Tests/AetherEngineTests/Issue535RefusalNeedsEligibilityTests.swift @@ -13,21 +13,28 @@ struct Issue535RefusalNeedsEligibilityTests { @Test("A display rejection while the display is ineligible for HDR does not latch") func ineligibleWindowDoesNotLatch() { - #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11868, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) - #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11848, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11868, servedMasterIsHDR: true, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11848, servedMasterIsHDR: true, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) } @Test("A display rejection on an eligible display still latches") func eligibleRefusalStillLatches() { - #expect(MasterFallbackDecision.shouldLatchPanelRefusal(code: -11868, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) - #expect(MasterFallbackDecision.shouldLatchPanelRefusal(code: -11848, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + #expect(MasterFallbackDecision.shouldLatchPanelRefusal(code: -11868, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + #expect(MasterFallbackDecision.shouldLatchPanelRefusal(code: -11848, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + } + + /// cmcpherson274, 2026-10-11: two SDR titles' masters refused with -11848 latched the HDR route. + @Test("A refusal of an SDR master never latches the HDR route") + func sdrMasterRefusalNeverLatches() { + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11848, servedMasterIsHDR: false, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -11868, servedMasterIsHDR: false, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) } /// -1002 is a manifest filtered at parse time (#130), a statement about the playlist, never the display. @Test("The parse-time rejection never latches, eligible or not") func parseRejectionNeverLatches() { - #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -1002, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) - #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -1002, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -1002, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + #expect(!MasterFallbackDecision.shouldLatchPanelRefusal(code: -1002, servedMasterIsHDR: true, displayEligibleForHDRNow: false, displaySwitchInProgress: false)) } /// The fallback itself is unaffected: the item still reloads the media playlist whatever the latch does. @@ -52,5 +59,7 @@ struct Issue535RefusalNeedsEligibilityTests { let set = try #require(body.range(of: "Self.panelRefusedHDRMaster = true")) #expect(gate.lowerBound < set.lowerBound) #expect(body.contains("AVPlayer.eligibleForHDRPlayback")) + let sdrGuard = try #require(body.range(of: "!session.servedSourceIsHDR")) + #expect(sdrGuard.lowerBound < set.lowerBound) } } diff --git a/Tests/AetherEngineTests/Issue551RedirectHandoffTests.swift b/Tests/AetherEngineTests/Issue551RedirectHandoffTests.swift index c8ade591c..f816c5d96 100644 --- a/Tests/AetherEngineTests/Issue551RedirectHandoffTests.swift +++ b/Tests/AetherEngineTests/Issue551RedirectHandoffTests.swift @@ -2,138 +2,140 @@ import Testing import Foundation @testable import AetherEngine -/// AE#551 round 2: what a warm knows about WHERE the bytes live, and what a request may carry -/// once it goes there. -/// -/// The report: a stable resolver URL that 302s to a temporary CDN target was resolved by the warm -/// and then resolved again by the load, for ~3.2 s of redirect TTFB the warm had already paid. -/// Measured here as request counts against the source origin, which is the observable a loopback -/// origin can answer honestly. -/// -/// The second half was found while fixing the first: pinning a cross-origin target and then -/// building requests against it replays the media server's credential to that target, which is -/// exactly what `RedirectHeaderPolicy` (#126) exists to prevent on the hop. One policy now runs -/// where the request is built, so a pin cannot outflank it. -/// -/// `.serialized`: the prewarm store and the origin budget are process-wide. -@Suite("#551 the warm's resolved target, and what travels to it", .serialized) -struct Issue551RedirectHandoffTests { - - private let fileSize: Int64 = 64 * 1024 * 1024 - private let credentials = ["Authorization": "Bearer SOURCE-ONLY", - "X-Emby-Token": "SOURCE-ONLY"] - - private func read(_ reader: AVIOReader, upTo target: Int) -> Int { - let sliceCap = 128 * 1024 - let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) - defer { buf.deallocate() } - var got = 0 - while got < target { - let n = reader.read(into: buf, size: Int32(min(sliceCap, target - got))) - if n <= 0 { break } - got += Int(n) +extension PrewarmStoreSuites { + /// AE#551 round 2: what a warm knows about WHERE the bytes live, and what a request may carry + /// once it goes there. + /// + /// The report: a stable resolver URL that 302s to a temporary CDN target was resolved by the warm + /// and then resolved again by the load, for ~3.2 s of redirect TTFB the warm had already paid. + /// Measured here as request counts against the source origin, which is the observable a loopback + /// origin can answer honestly. + /// + /// The second half was found while fixing the first: pinning a cross-origin target and then + /// building requests against it replays the media server's credential to that target, which is + /// exactly what `RedirectHeaderPolicy` (#126) exists to prevent on the hop. One policy now runs + /// where the request is built, so a pin cannot outflank it. + /// + /// `.serialized`: the prewarm store and the origin budget are process-wide. + @Suite("#551 the warm's resolved target, and what travels to it", .serialized) + struct Issue551RedirectHandoffTests { + + private let fileSize: Int64 = 64 * 1024 * 1024 + private let credentials = ["Authorization": "Bearer SOURCE-ONLY", + "X-Emby-Token": "SOURCE-ONLY"] + + private func read(_ reader: AVIOReader, upTo target: Int) -> Int { + let sliceCap = 128 * 1024 + let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) + defer { buf.deallocate() } + var got = 0 + while got < target { + let n = reader.read(into: buf, size: Int32(min(sliceCap, target - got))) + if n <= 0 { break } + got += Int(n) + } + return got } - return got - } - // MARK: - The handoff - - @Test("the load starts at the target the warm resolved instead of resolving it again", - .timeLimit(.minutes(2))) - func loadAdoptsTheWarmsResolvedTarget() async throws { - SourcePrewarmStore.shared.clear() - let cdn = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { cdn.stop() } - let cdnPort = cdn.port - let sourceMaybe = ThrottledOriginServer( - totalSize: fileSize, - respond: { _, _, _ in .redirect(to: "http://127.0.0.1:\(cdnPort)/cdn/movie.bin") }) - let source = try #require(sourceMaybe) - defer { source.stop() } - let url = URL(string: "http://127.0.0.1:\(source.port)/movie.bin")! - - _ = await SourcePrewarmFetcher.warm(url: url, extraHeaders: [:], - byteBudget: 256 * 1024, into: .shared) - let resolvesForTheWarm = source.rangeRequestCount - #expect(resolvesForTheWarm >= 1, "the warm has to have resolved the chain itself") - - let reader = AVIOReader(url: url) - defer { reader.markClosed(); reader.close() } - try reader.open() - #expect(read(reader, upTo: 384 * 1024) == 384 * 1024) - - #expect(source.rangeRequestCount == resolvesForTheWarm, - "the session resolved the chain a second time: \(source.requestLog)") - #expect(cdn.requestLog.contains(where: { $0.start >= 256 * 1024 }), - "the data connection never reached the resolved target: \(cdn.requestLog)") - } + // MARK: - The handoff + + @Test("the load starts at the target the warm resolved instead of resolving it again", + .timeLimit(.minutes(2))) + func loadAdoptsTheWarmsResolvedTarget() async throws { + SourcePrewarmStore.shared.clear() + let cdn = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { cdn.stop() } + let cdnPort = cdn.port + let sourceMaybe = ThrottledOriginServer( + totalSize: fileSize, + respond: { _, _, _ in .redirect(to: "http://127.0.0.1:\(cdnPort)/cdn/movie.bin") }) + let source = try #require(sourceMaybe) + defer { source.stop() } + let url = URL(string: "http://127.0.0.1:\(source.port)/movie.bin")! + + _ = await SourcePrewarmFetcher.warm(url: url, extraHeaders: [:], + byteBudget: 256 * 1024, into: .shared) + let resolvesForTheWarm = source.rangeRequestCount + #expect(resolvesForTheWarm >= 1, "the warm has to have resolved the chain itself") + + let reader = AVIOReader(url: url) + defer { reader.markClosed(); reader.close() } + try reader.open() + #expect(read(reader, upTo: 384 * 1024) == 384 * 1024) + + #expect(source.rangeRequestCount == resolvesForTheWarm, + "the session resolved the chain a second time: \(source.requestLog)") + #expect(cdn.requestLog.contains(where: { $0.start >= 256 * 1024 }), + "the data connection never reached the resolved target: \(cdn.requestLog)") + } - @Test("a warm that never saw a redirect pins nothing", .timeLimit(.minutes(2))) - func aDirectWarmPinsNothing() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let url = URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! - - _ = await SourcePrewarmFetcher.warm(url: url, extraHeaders: [:], - byteBudget: 256 * 1024, into: .shared) - let warmed = try #require(SourcePrewarmStore.shared.take(for: url)) - #expect(warmed.resolvedURL?.absoluteString == url.absoluteString || warmed.resolvedURL == nil, - "a direct origin must not hand back a different target: \(String(describing: warmed.resolvedURL))") - } + @Test("a warm that never saw a redirect pins nothing", .timeLimit(.minutes(2))) + func aDirectWarmPinsNothing() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let url = URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! + + _ = await SourcePrewarmFetcher.warm(url: url, extraHeaders: [:], + byteBudget: 256 * 1024, into: .shared) + let warmed = try #require(SourcePrewarmStore.shared.take(for: url)) + #expect(warmed.resolvedURL?.absoluteString == url.absoluteString || warmed.resolvedURL == nil, + "a direct origin must not hand back a different target: \(String(describing: warmed.resolvedURL))") + } - // MARK: - What travels to the pinned target - - @Test("a credential header does not reach a cross-origin target the session pinned", - .timeLimit(.minutes(2))) - func credentialsStayOffThePinnedTarget() async throws { - let firstRange: Int64 = 256 * 1024 - let cdn = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { cdn.stop() } - let cdnPort = cdn.port - let sourceMaybe = ThrottledOriginServer( - totalSize: fileSize, - respond: { _, _, _ in .redirect(to: "http://127.0.0.1:\(cdnPort)/cdn/movie.bin") }) - let source = try #require(sourceMaybe) - defer { source.stop() } - - var headers = credentials - // A non-credential header a header-dependent proxy needs (#8): it must still travel, or - // the fix would have broken the thing the policy deliberately keeps. - headers["Referer"] = "https://app.example" - let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(source.port)/movie.bin")!, - extraHeaders: headers, - boundedInitialFetch: firstRange) - defer { reader.markClosed(); reader.close() } - try reader.open() - // Past the bounded first range, so at least one request is built against the PINNED target - // rather than followed onto it through a 302. - #expect(read(reader, upTo: Int(firstRange) + 128 * 1024) == Int(firstRange) + 128 * 1024) - - let atTarget = cdn.requestHeaders - #expect(!atTarget.isEmpty, "the target served nothing, so the test proves nothing") - #expect(!atTarget.contains(where: { $0["authorization"] != nil }), - "the media server's credential reached the CDN: \(atTarget)") - #expect(!atTarget.contains(where: { $0["x-emby-token"] != nil }), - "the media server's token reached the CDN: \(atTarget)") - #expect(atTarget.allSatisfy { $0["referer"] == "https://app.example" }, - "a non-credential header stopped travelling: \(atTarget)") - #expect(source.requestHeaders.allSatisfy { $0["authorization"] == "Bearer SOURCE-ONLY" }, - "the source itself must still be authenticated: \(source.requestHeaders)") - } + // MARK: - What travels to the pinned target + + @Test("a credential header does not reach a cross-origin target the session pinned", + .timeLimit(.minutes(2))) + func credentialsStayOffThePinnedTarget() async throws { + let firstRange: Int64 = 256 * 1024 + let cdn = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { cdn.stop() } + let cdnPort = cdn.port + let sourceMaybe = ThrottledOriginServer( + totalSize: fileSize, + respond: { _, _, _ in .redirect(to: "http://127.0.0.1:\(cdnPort)/cdn/movie.bin") }) + let source = try #require(sourceMaybe) + defer { source.stop() } + + var headers = credentials + // A non-credential header a header-dependent proxy needs (#8): it must still travel, or + // the fix would have broken the thing the policy deliberately keeps. + headers["Referer"] = "https://app.example" + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(source.port)/movie.bin")!, + extraHeaders: headers, + boundedInitialFetch: firstRange) + defer { reader.markClosed(); reader.close() } + try reader.open() + // Past the bounded first range, so at least one request is built against the PINNED target + // rather than followed onto it through a 302. + #expect(read(reader, upTo: Int(firstRange) + 128 * 1024) == Int(firstRange) + 128 * 1024) + + let atTarget = cdn.requestHeaders + #expect(!atTarget.isEmpty, "the target served nothing, so the test proves nothing") + #expect(!atTarget.contains(where: { $0["authorization"] != nil }), + "the media server's credential reached the CDN: \(atTarget)") + #expect(!atTarget.contains(where: { $0["x-emby-token"] != nil }), + "the media server's token reached the CDN: \(atTarget)") + #expect(atTarget.allSatisfy { $0["referer"] == "https://app.example" }, + "a non-credential header stopped travelling: \(atTarget)") + #expect(source.requestHeaders.allSatisfy { $0["authorization"] == "Bearer SOURCE-ONLY" }, + "the source itself must still be authenticated: \(source.requestHeaders)") + } - @Test("the same-origin case keeps every header it always had", .timeLimit(.minutes(2))) - func sameOriginKeepsCredentials() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/movie.bin")!, - extraHeaders: credentials) - defer { reader.markClosed(); reader.close() } - try reader.open() - #expect(read(reader, upTo: 128 * 1024) == 128 * 1024) - - #expect(!server.requestHeaders.isEmpty) - #expect(server.requestHeaders.allSatisfy { $0["authorization"] == "Bearer SOURCE-ONLY" }, - "an unredirected source lost its credential: \(server.requestHeaders)") + @Test("the same-origin case keeps every header it always had", .timeLimit(.minutes(2))) + func sameOriginKeepsCredentials() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/movie.bin")!, + extraHeaders: credentials) + defer { reader.markClosed(); reader.close() } + try reader.open() + #expect(read(reader, upTo: 128 * 1024) == 128 * 1024) + + #expect(!server.requestHeaders.isEmpty) + #expect(server.requestHeaders.allSatisfy { $0["authorization"] == "Bearer SOURCE-ONLY" }, + "an unredirected source lost its credential: \(server.requestHeaders)") + } } } diff --git a/Tests/AetherEngineTests/Issue594BoundedStartFloorTests.swift b/Tests/AetherEngineTests/Issue594BoundedStartFloorTests.swift index 54f5b38fc..1307b2f9a 100644 --- a/Tests/AetherEngineTests/Issue594BoundedStartFloorTests.swift +++ b/Tests/AetherEngineTests/Issue594BoundedStartFloorTests.swift @@ -83,7 +83,9 @@ final class Issue594BoundedStartFloorTests: XCTestCase { func testFloorHoldsAStrictRealtimeOriginPastTheGrace() { let (provider, cache) = makeProvider(floorsAtHoldback: true) defer { cache.close() } - let (result, finished) = startWaiter(provider) + // No outer deadline within reach: it serves a degraded start, which would read as the floor + // releasing. + let (result, finished) = startWaiter(provider, timeout: 300) append(provider, index: 0) append(provider, index: 1) @@ -93,7 +95,7 @@ final class Issue594BoundedStartFloorTests: XCTestCase { for index in 2..<15 { append(provider, index: index) } - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) XCTAssertEqual(result.value, true, "the floor never released once the cushion was built") } @@ -108,7 +110,7 @@ final class Issue594BoundedStartFloorTests: XCTestCase { for index in 0..<15 { append(provider, index: index) } - wait(for: [finished], timeout: 1) + wait(for: [finished], timeout: 300) let elapsed = Double( DispatchTime.now().uptimeNanoseconds - started.uptimeNanoseconds ) / 1_000_000_000 @@ -126,7 +128,7 @@ final class Issue594BoundedStartFloorTests: XCTestCase { let threshold = DispatchTime.now() append(provider, index: 1) - wait(for: [finished], timeout: 1.2) + wait(for: [finished], timeout: 300) let elapsed = Double( DispatchTime.now().uptimeNanoseconds - threshold.uptimeNanoseconds ) / 1_000_000_000 diff --git a/Tests/AetherEngineTests/Issue597MediaServicesResetTests.swift b/Tests/AetherEngineTests/Issue597MediaServicesResetTests.swift index 78fe43ed6..9dccae4cb 100644 --- a/Tests/AetherEngineTests/Issue597MediaServicesResetTests.swift +++ b/Tests/AetherEngineTests/Issue597MediaServicesResetTests.swift @@ -49,6 +49,19 @@ struct Issue597MediaServicesResetTests { #expect(!engine.consumeMediaServicesReset()) } + /// PR #740: the Atmos output activator holds an `AVQueuePlayer` of its own, which a reset invalidates + /// like the engine's, so the reset drops it and the next native player builds a fresh one. + @Test("a reset drops the Atmos output activator with its invalidated player") + @MainActor + func resetDropsTheAtmosOutputActivator() throws { + let engine = try AetherEngine() + engine.atmosOutputActivator = AtmosOutputActivator() + + engine.noteMediaServicesReset(lost: false) + + #expect(engine.atmosOutputActivator == nil) + } + /// Audit LIF-104: `reloadWithAudioOverride` (the audio pick, the disc-title pick, the custom-source /// reload) keeps the native host on the native route, and it never read the flag, so the first /// rebuild after a reset mounted the item on the invalidated AVPlayer while the flag stayed up. diff --git a/Tests/AetherEngineTests/Issue597StrandedDiagnosticReadTests.swift b/Tests/AetherEngineTests/Issue597StrandedDiagnosticReadTests.swift index dbe5d7502..5e55b0d8a 100644 --- a/Tests/AetherEngineTests/Issue597StrandedDiagnosticReadTests.swift +++ b/Tests/AetherEngineTests/Issue597StrandedDiagnosticReadTests.swift @@ -54,7 +54,7 @@ struct Issue597StrandedDiagnosticReadTests { // pool's occupancy here: on a loaded runner the lanes' own budget can expire before the // assertion runs, which would pin the harness's timing rather than the contract. That the // reads started at all is the fact this arm needs, and the two below are the contract. - try await waitFor(upTo: .seconds(5)) { + try await waitFor { stranded.count == ItemDiagnosticReadPool.maximumConcurrentReads } @@ -62,10 +62,10 @@ struct Issue597StrandedDiagnosticReadTests { let later = AVPlayerItemDiagnostics(item: item(), pool: pool, read: answering.read) later.request(.counters) - try await waitFor(upTo: .seconds(5)) { answering.count == 1 } + try await waitFor { answering.count == 1 } #expect(answering.count == 1, "the pool never admitted a read after the stranded ones") - try await waitFor(upTo: .seconds(5)) { pool.runningCount == 0 } + try await waitFor { pool.runningCount == 0 } #expect(pool.runningCount == 0, "lanes were still held after every read had settled") _ = blockers } @@ -80,16 +80,16 @@ struct Issue597StrandedDiagnosticReadTests { let reader = AVPlayerItemDiagnostics(item: item(), pool: pool, read: stranded.read) reader.request(.counters) - try await waitFor(upTo: .seconds(5)) { stranded.count == 1 } + try await waitFor { stranded.count == 1 } // Deliberately not asserting that it is in flight first: under a loaded runner the lane's // own budget can expire before the assertion runs, and that would pin the harness rather // than the contract. What is being pinned is that it does not STAY in flight. - try await waitFor(upTo: .seconds(5)) { !reader.inFlight } + try await waitFor { !reader.inFlight } #expect(!reader.inFlight, "the reader stayed in flight behind a read nobody will answer") reader.request(.counters) - try await waitFor(upTo: .seconds(5)) { stranded.count == 2 } + try await waitFor { stranded.count == 2 } #expect(stranded.count == 2, "a second request never reached the read") } } diff --git a/Tests/AetherEngineTests/Issue605SoftwareVODStillTests.swift b/Tests/AetherEngineTests/Issue605SoftwareVODStillTests.swift index dbc01f84d..375f3977e 100644 --- a/Tests/AetherEngineTests/Issue605SoftwareVODStillTests.swift +++ b/Tests/AetherEngineTests/Issue605SoftwareVODStillTests.swift @@ -9,7 +9,7 @@ import Testing /// moving the consumer, or every preview would rewind playback. And the run is offered exactly where /// a commit would be a cache hit: a target past the retained frontier has a real frame the store /// does not hold yet, so the frame before it is the wrong answer rather than a close one. -@Suite("Software VOD scrub stills from the packet cache (AE#605)") +@Suite("Software VOD scrub stills from the packet cache (AE#605)", .offCooperativePool, .timeLimit(.minutes(2))) struct Issue605SoftwareVODStillTests { // MARK: - FIFO history walk @@ -134,13 +134,10 @@ struct Issue605SoftwareVODStillTests { fifo: fifo ) { _ in Self.sourcePacket(index: counter.next(), keyframeEvery: keyframeEvery) } cache.start() - let deadline = Date().addingTimeInterval(10) - var previous = -1 - while Date() < deadline { - Thread.sleep(forTimeInterval: 0.15) - let now = counter.value - if now == previous, now > 0 { break } - previous = now + // The park itself, not a counter that held still for 150 ms: a producer that is merely slow + // on a loaded machine looked parked to that, and the still past its frontier came back nil. + while !cache.producerParkedForTesting { + Thread.sleep(forTimeInterval: 0.02) } return cache } diff --git a/Tests/AetherEngineTests/Issue613PacketCoverageTests.swift b/Tests/AetherEngineTests/Issue613PacketCoverageTests.swift index 21b440d98..0e3d307d6 100644 --- a/Tests/AetherEngineTests/Issue613PacketCoverageTests.swift +++ b/Tests/AetherEngineTests/Issue613PacketCoverageTests.swift @@ -11,7 +11,7 @@ import Testing /// `bufferedPosition` stuck at the end of the current island. And a coverage that reached its range /// cap stopped describing new packets (plain) or invalidated itself (successor model) instead of /// forgetting the history behind the playhead. -@Suite("Software VOD packet coverage (#613)") +@Suite("Software VOD packet coverage (#613)", .offCooperativePool) struct Issue613PacketCoverageTests { private static let tickRate: Int32 = 1000 @@ -57,15 +57,13 @@ struct Issue613PacketCoverageTests { return try body(root) } - /// Waits for the producer to park, read as a packet count that stops moving. + /// Waits for the producer to park. The park itself, not a packet count that held still: a + /// producer that is merely slow on a loaded machine looks parked to that. Sync, so the bound is + /// a generous hang catcher rather than a verdict. private func waitForPark(_ source: SoftwarePacketReadAhead) { - let deadline = Date().addingTimeInterval(10) - var previous = -1 - while Date() < deadline { - Thread.sleep(forTimeInterval: 0.15) - let now = source.snapshot.packetCount - if now == previous, now > 0 { return } - previous = now + let deadline = Date().addingTimeInterval(120) + while !source.producerParkedForTesting, Date() < deadline { + Thread.sleep(forTimeInterval: 0.02) } } @@ -118,7 +116,7 @@ struct Issue613PacketCoverageTests { private func frontierAfterConsuming(_ count: Int, source: SoftwarePacketReadAhead) throws -> Double? { source.start() for _ in 0.. [UInt8]? { diff --git a/Tests/AetherEngineTests/Issue647DiscReaderPrewarmTests.swift b/Tests/AetherEngineTests/Issue647DiscReaderPrewarmTests.swift index 7604bb88b..b8ad30951 100644 --- a/Tests/AetherEngineTests/Issue647DiscReaderPrewarmTests.swift +++ b/Tests/AetherEngineTests/Issue647DiscReaderPrewarmTests.swift @@ -2,128 +2,130 @@ import Testing import Foundation @testable import AetherEngine -/// #647: a remote disc image the host warmed is read out of the warm, the way any other source is. -/// -/// Before this the disc reader never looked at the store: it probed the size with `bytes=0-0`, -/// refetched the head, and left the warm in the store for the streaming reader that never came. -/// -/// `.serialized`: the Demuxer case goes through the process-wide store. The reader cases use a -/// private store so nothing here depends on another suite leaving `.shared` alone. -@Suite("Disc reader adopts a prewarmed source (#647)", .serialized) -struct Issue647DiscReaderPrewarmTests { - - private let fileSize: Int64 = 64 * 1024 * 1024 - private let warmBytes = 1024 * 1024 - - private func url(_ server: ThrottledOriginServer, _ name: String = "disc.iso") -> URL { - URL(string: "http://127.0.0.1:\(server.port)/\(name)")! - } +extension PrewarmStoreSuites { + /// #647: a remote disc image the host warmed is read out of the warm, the way any other source is. + /// + /// Before this the disc reader never looked at the store: it probed the size with `bytes=0-0`, + /// refetched the head, and left the warm in the store for the streaming reader that never came. + /// + /// `.serialized`: the Demuxer case goes through the process-wide store. The reader cases use a + /// private store so nothing here depends on another suite leaving `.shared` alone. + @Suite("Disc reader adopts a prewarmed source (#647)", .serialized) + struct Issue647DiscReaderPrewarmTests { + + private let fileSize: Int64 = 64 * 1024 * 1024 + private let warmBytes = 1024 * 1024 + + private func url(_ server: ThrottledOriginServer, _ name: String = "disc.iso") -> URL { + URL(string: "http://127.0.0.1:\(server.port)/\(name)")! + } - private func read(_ reader: IOReader, at offset: Int64, _ size: Int) -> [UInt8] { - _ = reader.seek(offset: offset, whence: SEEK_SET) - var out: [UInt8] = [] - let buf = UnsafeMutablePointer.allocate(capacity: size) - defer { buf.deallocate() } - while out.count < size { - let n = reader.read(buf, size: Int32(size - out.count)) - guard n > 0 else { break } - out.append(contentsOf: UnsafeBufferPointer(start: buf, count: Int(n))) + private func read(_ reader: IOReader, at offset: Int64, _ size: Int) -> [UInt8] { + _ = reader.seek(offset: offset, whence: SEEK_SET) + var out: [UInt8] = [] + let buf = UnsafeMutablePointer.allocate(capacity: size) + defer { buf.deallocate() } + while out.count < size { + let n = reader.read(buf, size: Int32(size - out.count)) + guard n > 0 else { break } + out.append(contentsOf: UnsafeBufferPointer(start: buf, count: Int(n))) + } + return out } - return out - } - private func expected(at offset: Int64, _ size: Int) -> [UInt8] { - (0.. [UInt8] { + (0.. HTTPDiscIOReader { - let report = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: [:], - byteBudget: warmBytes, into: store) - #expect(report.retainedBytes == warmBytes) - let warm = try #require(HTTPDiscIOReader.takePrewarm(for: url(server), extraHeaders: [:], - store: store)) - #expect(!store.isWarm(for: url(server)), "adoption takes the entry") - return try #require(HTTPDiscIOReader(url: url(server), prewarmed: warm)) - } + private func warmedReader(_ server: ThrottledOriginServer, + store: SourcePrewarmStore) async throws -> HTTPDiscIOReader { + let report = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: [:], + byteBudget: warmBytes, into: store) + #expect(report.retainedBytes == warmBytes) + let warm = try #require(HTTPDiscIOReader.takePrewarm(for: url(server), extraHeaders: [:], + store: store)) + #expect(!store.isWarm(for: url(server)), "adoption takes the entry") + return try #require(HTTPDiscIOReader(url: url(server), prewarmed: warm)) + } - @Test("reads inside the warm cost no request, and the size is not probed") - func warmServesTheHead() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) - defer { server.stop() } - let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) - defer { reader.close() } - let afterWarm = server.requestedRanges.count - - #expect(reader.seek(offset: 0, whence: 65536) == fileSize) - // The disc layer's opening shape: the ISO 9660 sniff at 0x8001, the UDF anchor at sector - // 256, a directory read back near the start. - #expect(read(reader, at: 0x8001, 5) == expected(at: 0x8001, 5)) - #expect(read(reader, at: 256 * 2048, 2048) == expected(at: 256 * 2048, 2048)) - #expect(read(reader, at: 40_960, 64 * 1024) == expected(at: 40_960, 64 * 1024)) - #expect(server.requestedRanges.count == afterWarm, - "a read inside the warm went to the network: \(server.requestedRanges.dropFirst(afterWarm))") - } + @Test("reads inside the warm cost no request, and the size is not probed") + func warmServesTheHead() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) + defer { server.stop() } + let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) + defer { reader.close() } + let afterWarm = server.requestedRanges.count + + #expect(reader.seek(offset: 0, whence: 65536) == fileSize) + // The disc layer's opening shape: the ISO 9660 sniff at 0x8001, the UDF anchor at sector + // 256, a directory read back near the start. + #expect(read(reader, at: 0x8001, 5) == expected(at: 0x8001, 5)) + #expect(read(reader, at: 256 * 2048, 2048) == expected(at: 256 * 2048, 2048)) + #expect(read(reader, at: 40_960, 64 * 1024) == expected(at: 40_960, 64 * 1024)) + #expect(server.requestedRanges.count == afterWarm, + "a read inside the warm went to the network: \(server.requestedRanges.dropFirst(afterWarm))") + } - @Test("a read across the warm frontier is exact and fetches from the frontier on") - func frontierContinues() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) - defer { server.stop() } - let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) - defer { reader.close() } - let afterWarm = server.requestedRanges.count - - let start = Int64(warmBytes) - 1000 - #expect(read(reader, at: start, 300_000) == expected(at: start, 300_000)) - let opened = Array(server.requestedRanges.dropFirst(afterWarm)) - #expect(opened.first?.start == Int64(warmBytes), "requests: \(opened)") - #expect(!opened.contains(where: { $0.start < Int64(warmBytes) }), "requests: \(opened)") - } + @Test("a read across the warm frontier is exact and fetches from the frontier on") + func frontierContinues() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) + defer { server.stop() } + let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) + defer { reader.close() } + let afterWarm = server.requestedRanges.count + + let start = Int64(warmBytes) - 1000 + #expect(read(reader, at: start, 300_000) == expected(at: start, 300_000)) + let opened = Array(server.requestedRanges.dropFirst(afterWarm)) + #expect(opened.first?.start == Int64(warmBytes), "requests: \(opened)") + #expect(!opened.contains(where: { $0.start < Int64(warmBytes) }), "requests: \(opened)") + } - @Test("a fork shares the warm and the size, so it neither probes nor refetches the head") - func forkSharesTheWarm() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) - defer { server.stop() } - let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) - defer { reader.close() } - let afterWarm = server.requestedRanges.count - - let fork = try #require(reader.makeIndependentReader()) - defer { fork.close() } - #expect(fork.seek(offset: 0, whence: 65536) == fileSize) - #expect(read(fork, at: 0, 128 * 1024) == expected(at: 0, 128 * 1024)) - #expect(server.requestedRanges.count == afterWarm, - "the fork went to the network: \(server.requestedRanges.dropFirst(afterWarm))") - } + @Test("a fork shares the warm and the size, so it neither probes nor refetches the head") + func forkSharesTheWarm() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) + defer { server.stop() } + let reader = try await warmedReader(server, store: SourcePrewarmStore(totalByteCap: 8 << 20)) + defer { reader.close() } + let afterWarm = server.requestedRanges.count + + let fork = try #require(reader.makeIndependentReader()) + defer { fork.close() } + #expect(fork.seek(offset: 0, whence: 65536) == fileSize) + #expect(read(fork, at: 0, 128 * 1024) == expected(at: 0, 128 * 1024)) + #expect(server.requestedRanges.count == afterWarm, + "the fork went to the network: \(server.requestedRanges.dropFirst(afterWarm))") + } - @Test("a warm fetched with other headers is not adopted") - func headersMustMatch() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - _ = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: ["Referer": "a"], - byteBudget: warmBytes, into: store) - #expect(HTTPDiscIOReader.takePrewarm(for: url(server), extraHeaders: ["Referer": "b"], - store: store) == nil) - } + @Test("a warm fetched with other headers is not adopted") + func headersMustMatch() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + _ = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: ["Referer": "a"], + byteBudget: warmBytes, into: store) + #expect(HTTPDiscIOReader.takePrewarm(for: url(server), extraHeaders: ["Referer": "b"], + store: store) == nil) + } - @Test("a disc-image URL that is no disc hands the warm to the streaming reader") - func notADiscKeepsTheWarm() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) - defer { server.stop() } - let source = url(server, "not-a-disc.iso") - _ = await SourcePrewarmFetcher.warm(url: source, extraHeaders: [:], - byteBudget: warmBytes, into: .shared) - let afterWarm = server.requestedRanges.count - - let demuxer = Demuxer() - defer { demuxer.close() } - // Patterned bytes are no container, so the open fails; what it asked the origin is the point. - try? demuxer.open(url: source) - - let opened = Array(server.requestedRanges.dropFirst(afterWarm)) - #expect(!opened.contains(where: { $0.start == 0 }), - "the open re-fetched bytes it already had: \(opened)") - #expect(!SourcePrewarmStore.shared.isWarm(for: source)) + @Test("a disc-image URL that is no disc hands the warm to the streaming reader") + func notADiscKeepsTheWarm() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize, patternedBody: true)) + defer { server.stop() } + let source = url(server, "not-a-disc.iso") + _ = await SourcePrewarmFetcher.warm(url: source, extraHeaders: [:], + byteBudget: warmBytes, into: .shared) + let afterWarm = server.requestedRanges.count + + let demuxer = Demuxer() + defer { demuxer.close() } + // Patterned bytes are no container, so the open fails; what it asked the origin is the point. + try? demuxer.open(url: source) + + let opened = Array(server.requestedRanges.dropFirst(afterWarm)) + #expect(!opened.contains(where: { $0.start == 0 }), + "the open re-fetched bytes it already had: \(opened)") + #expect(!SourcePrewarmStore.shared.isWarm(for: source)) + } } } diff --git a/Tests/AetherEngineTests/Issue667MasterAfterSwitchTests.swift b/Tests/AetherEngineTests/Issue667MasterAfterSwitchTests.swift index 37350a8fa..273a5d48d 100644 --- a/Tests/AetherEngineTests/Issue667MasterAfterSwitchTests.swift +++ b/Tests/AetherEngineTests/Issue667MasterAfterSwitchTests.swift @@ -37,15 +37,15 @@ struct Issue667MasterAfterSwitchTests { @Test("A refusal raised mid-switch does not latch, even on an eligible display") func midSwitchRefusalDoesNotLatch() { #expect(!MasterFallbackDecision.shouldLatchPanelRefusal( - code: -11868, displayEligibleForHDRNow: true, displaySwitchInProgress: true)) + code: -11868, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: true)) #expect(!MasterFallbackDecision.shouldLatchPanelRefusal( - code: -11848, displayEligibleForHDRNow: true, displaySwitchInProgress: true)) + code: -11848, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: true)) } @Test("A refusal after the switch settled still latches") func settledRefusalStillLatches() { #expect(MasterFallbackDecision.shouldLatchPanelRefusal( - code: -11868, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) + code: -11868, servedMasterIsHDR: true, displayEligibleForHDRNow: true, displaySwitchInProgress: false)) } /// A policy test cannot see the call site, so this one reads it: the wait sits between the route and the diff --git a/Tests/AetherEngineTests/Issue684JoinBoundSealTests.swift b/Tests/AetherEngineTests/Issue684JoinBoundSealTests.swift index 882619122..2b7caf3ce 100644 --- a/Tests/AetherEngineTests/Issue684JoinBoundSealTests.swift +++ b/Tests/AetherEngineTests/Issue684JoinBoundSealTests.swift @@ -245,7 +245,7 @@ final class Issue684JoinBoundSealTests: XCTestCase { while fifo.parkedWaiterCount == 0 { usleep(200) } XCTAssertTrue(fifo.isEmptyWithReaderParked) fifo.cancel() - wait(for: [done], timeout: 2) + wait(for: [done], timeout: 300) XCTAssertFalse(fifo.isEmptyWithReaderParked, "a cancelled reader is not a spent join") } diff --git a/Tests/AetherEngineTests/Issue684PumpJoinSpentTests.swift b/Tests/AetherEngineTests/Issue684PumpJoinSpentTests.swift index c7f92701d..2b5a2257d 100644 --- a/Tests/AetherEngineTests/Issue684PumpJoinSpentTests.swift +++ b/Tests/AetherEngineTests/Issue684PumpJoinSpentTests.swift @@ -17,7 +17,7 @@ import XCTest /// TS-shaped segment bodies. A path named in `hold` is answered only once `release` names it. private final class HeldSegmentOrigin: @unchecked Sendable { let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let lock = NSCondition() private var held: Set private var stopped = false @@ -26,29 +26,14 @@ private final class HeldSegmentOrigin: @unchecked Sendable { init?(hold: Set) { held = hold - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var addr = sockaddr_in() - addr.sin_family = sa_family_t(AF_INET) - addr.sin_port = 0 - addr.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &addr) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 16) == 0 else { close(fd); return nil } - var name = sockaddr_in() - var len = socklen_t(MemoryLayout.size) - let named = withUnsafeMutablePointer(to: &name) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &len) } + guard let listener = LoopbackListener(backlog: 16) else { return nil } + self.listener = listener + port = listener.port + listener.start { [weak self] conn in + guard let self else { close(conn); return false } + Thread.detachNewThread { [weak self] in self?.serve(conn) } + return true } - guard named == 0 else { close(fd); return nil } - listenFD = fd - port = UInt16(bigEndian: name.sin_port) - Thread.detachNewThread { [weak self] in self?.acceptLoop() } } func url(_ path: String) -> URL { URL(string: "http://127.0.0.1:\(port)/\(path)")! } @@ -66,17 +51,7 @@ private final class HeldSegmentOrigin: @unchecked Sendable { held.removeAll() lock.broadcast() lock.unlock() - close(listenFD) - } - - private func acceptLoop() { - while true { - let conn = accept(listenFD, nil, nil) - guard conn >= 0 else { return } - var noSigPipe: Int32 = 1 - setsockopt(conn, SOL_SOCKET, SO_NOSIGPIPE, &noSigPipe, socklen_t(MemoryLayout.size)) - Thread.detachNewThread { [weak self] in self?.serve(conn) } - } + listener.stop() } private func mediaPlaylist(prefix: String) -> Data { @@ -177,7 +152,7 @@ private final class ReaderDrain: @unchecked Sendable { final class Issue684PumpJoinSpentTests: XCTestCase { - private func waitUntil(_ what: String, timeout: TimeInterval = 60, _ condition: () -> Bool) { + private func waitUntil(_ what: String, timeout: TimeInterval = 300, _ condition: () -> Bool) { let deadline = Date().addingTimeInterval(timeout) while !condition() { if Date() >= deadline { return XCTFail("timed out waiting for: \(what)") } diff --git a/Tests/AetherEngineTests/Issue694AudioHostEndOfMediaParkTests.swift b/Tests/AetherEngineTests/Issue694AudioHostEndOfMediaParkTests.swift index ef5571358..9d8d0b54b 100644 --- a/Tests/AetherEngineTests/Issue694AudioHostEndOfMediaParkTests.swift +++ b/Tests/AetherEngineTests/Issue694AudioHostEndOfMediaParkTests.swift @@ -5,11 +5,12 @@ import Foundation /// #694: the audio-only host reported end of media while its synchronizer kept rate 1, so /// `currentTime` walked past `duration` without bound. AE#374 closed the same defect on the software /// host; this pins it on the audio-only one, end to end against a real decode. -@Suite("Audio host parks its clock at end of media (#694)", .serialized) +@Suite("Audio host parks its clock at end of media (#694)", .serialized, .offCooperativePool) struct Issue694AudioHostEndOfMediaParkTests { @MainActor - @Test("after end of media the clock stands still on the last sample, even when the park runs late") + @Test("after end of media the clock stands still on the last sample, even when the park runs late", + .timeLimit(.minutes(2))) func clockParksOnTheLastSample() async throws { let host = AudioPlaybackHost() let demuxer = Demuxer() @@ -18,19 +19,13 @@ struct Issue694AudioHostEndOfMediaParkTests { defer { host.stop() } host.play() - let deadline = Date().addingTimeInterval(8) - while !host.didReachEnd, Date() < deadline { - try await Task.sleep(nanoseconds: 50_000_000) - } + try await waitFor { host.didReachEnd } #expect(host.didReachEnd) // What a loaded runner does to the deferred park (CI: parked at 1.149 s): hold the main actor // past the queued tail, so the park runs after the clock has walked on. usleep(500_000) - let parkDeadline = Date().addingTimeInterval(2) - while host.clockRateForTesting != 0, Date() < parkDeadline { - try await Task.sleep(nanoseconds: 20_000_000) - } + try await waitFor { host.clockRateForTesting == 0 } #expect(host.clockRateForTesting == 0) #expect(host.rate == 0) diff --git a/Tests/AetherEngineTests/Issue726AudioRenditionChannelsTests.swift b/Tests/AetherEngineTests/Issue726AudioRenditionChannelsTests.swift new file mode 100644 index 000000000..48ced077b --- /dev/null +++ b/Tests/AetherEngineTests/Issue726AudioRenditionChannelsTests.swift @@ -0,0 +1,88 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// AE#726: CHANNELS on the master's EXT-X-MEDIA:TYPE=AUDIO tag. `CODECS` is `ec-3` for JOC and non-JOC +/// alike (#34), so `"16/JOC"` is the only playlist-level statement that a rendition carries objects; +/// without it a stream-copied Atmos bitstream reached the receiver as the 5.1 bed (device A/B in PR #727). +struct Issue726AudioRenditionChannelsTests { + + private func provider( + language: String?, channels: Int?, atmosStreamCopy: Bool + ) -> VideoSegmentProvider { + VideoSegmentProvider( + cache: SegmentCache(forwardWindow: 4, backwardWindow: 4), + segments: [HLSVideoEngine.Segment(startPts: 0, endPts: 4000, startSeconds: 0, durationSeconds: 4)], + codecsString: "hvc1.2.4.L150.b0,ec-3", supplementalCodecs: nil, + resolution: (3840, 2160), videoRange: .sdr, frameRate: 24.0, hdcpLevel: nil, + sourceBitrate: 10_000_000, + audioLanguage: language, + audioChannelCount: channels, + audioIsAtmosStreamCopy: atmosStreamCopy + ) + } + + private func audioTag(_ master: String) -> String? { + master.split(separator: "\n").first { $0.hasPrefix("#EXT-X-MEDIA:TYPE=AUDIO") }.map(String.init) + } + + @Test("a tagged JOC stream copy is declared 16/JOC after the existing attributes") + func taggedJOC() { + let master = HLSLocalServer.buildMasterPlaylistText( + provider: provider(language: "eng", channels: 6, atmosStreamCopy: true)) + #expect(audioTag(master)?.hasSuffix( + "LANGUAGE=\"eng\",DEFAULT=YES,AUTOSELECT=YES,CHANNELS=\"16/JOC\"") == true) + } + + @Test("an untagged JOC stream copy still gets a rendition, without LANGUAGE") + func untaggedJOC() { + let p = provider(language: nil, channels: 6, atmosStreamCopy: true) + #expect(p.masterAudioRendition?.language == nil) + #expect(p.masterAudioRendition?.name == VideoSegmentProvider.untaggedAtmosRenditionName) + let master = HLSLocalServer.buildMasterPlaylistText(provider: p) + #expect(audioTag(master) == "#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID=\"aud\",NAME=\"Dolby Atmos\"," + + "DEFAULT=YES,AUTOSELECT=YES,CHANNELS=\"16/JOC\"") + #expect(master.contains("AUDIO=\"aud\"")) + } + + /// The rendition is what forces a master on an SDR source (AE#458), so widening it to every untagged + /// track would reroute every untagged source for an attribute nothing has been measured to need. + @Test("an untagged non-JOC track keeps the master without an audio group") + func untaggedBedHasNoRendition() { + let p = provider(language: nil, channels: 6, atmosStreamCopy: false) + #expect(p.masterAudioRendition == nil) + #expect(p.masterAudioChannels == nil) + let master = HLSLocalServer.buildMasterPlaylistText(provider: p) + #expect(!master.contains("TYPE=AUDIO")) + #expect(!master.contains("AUDIO=\"aud\"")) + } + + @Test("a tagged track that is not object audio is declared with its served channel count") + func taggedBed() { + let master = HLSLocalServer.buildMasterPlaylistText( + provider: provider(language: "deu", channels: 8, atmosStreamCopy: false)) + #expect(audioTag(master)?.hasSuffix("AUTOSELECT=YES,CHANNELS=\"8\"") == true) + } + + @Test("an unknown channel count omits CHANNELS rather than guessing") + func unknownCount() { + let master = HLSLocalServer.buildMasterPlaylistText( + provider: provider(language: "deu", channels: nil, atmosStreamCopy: false)) + #expect(audioTag(master)?.contains("CHANNELS=") == false) + } + + @Test("the audible readback names a rendition without LANGUAGE as untagged, not as nothing declared") + func readbackUntagged() { + let missing = AudibleSelectionReadback.line( + served: nil, declaredUntagged: true, servingMaster: true, + groupPresent: false, options: [], selected: nil) + #expect(missing.contains("served=untagged")) + #expect(missing.contains("AVKit labels the track Not Specified")) + let unknown = AudibleSelectionReadback.Option(displayName: "Unknown", languageTag: nil) + let found = AudibleSelectionReadback.line( + served: nil, declaredUntagged: true, servingMaster: true, + groupPresent: true, options: [unknown], selected: unknown) + #expect(found.contains("served=untagged")) + #expect(!found.contains("MISMATCH")) + } +} diff --git a/Tests/AetherEngineTests/Issue732PersistentHTTP1Tests.swift b/Tests/AetherEngineTests/Issue732PersistentHTTP1Tests.swift new file mode 100644 index 000000000..6bedf6c02 --- /dev/null +++ b/Tests/AetherEngineTests/Issue732PersistentHTTP1Tests.swift @@ -0,0 +1,390 @@ +import Foundation +import XCTest +@testable import AetherEngine + +/// AE#732: under `heldSourceConnection` the HLS VOD ingest carries its playlist, probe and segment +/// requests over one persistent HTTP/1.1 connection per origin, across segment boundaries. +final class Issue732PersistentHTTP1Tests: XCTestCase { + + func testReaderCarriesPlaylistProbeAndEverySegmentOverOneConnection() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + let segments = (0..<5).map { "seg\($0).ts" } + server.route = { path in + if path == "/vod.m3u8" { return .init(body: Self.mediaPlaylist(segments)) } + guard let index = segments.firstIndex(where: { "/" + $0 == path }) else { return .init(status: 404) } + return .init(body: Self.transportStream(marker: UInt8(index))) + } + + let made = try await HLSVODIngestReader.makeIfHEVCMPEGTS( + playlistURL: server.url("/vod.m3u8"), + httpHeaders: ["X-Fixture": "allowed"], + persistentHTTP1: true) + let reader = try XCTUnwrap(made) + defer { reader.close() } + + let stream = Self.drain(reader) + XCTAssertEqual(stream.count, 5 * 188 * 3) + XCTAssertEqual((0..<5).map { stream[$0 * 188 * 3 + Self.markerOffset] }, [0, 1, 2, 3, 4]) + + let log = server.requests + XCTAssertEqual(server.connectionCount, 1, "every request rides the first connection") + // The probe downloaded segment 0 whole, so the producer does not ask for it again. + XCTAssertEqual(log.map(\.path), ["/vod.m3u8"] + segments.map { "/" + $0 }) + XCTAssertTrue(log.allSatisfy { $0.requestLine.hasSuffix(" HTTP/1.1") }) + XCTAssertTrue(log.allSatisfy { $0.headers["range"] == nil }) + XCTAssertTrue(log.allSatisfy { $0.headers["x-fixture"] == "allowed" }) + } + + func testReaderSurvivesASeekThatCancelsAFetchMidBody() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + let segments = (0..<6).map { "seg\($0).ts" } + server.route = { path in + if path == "/vod.m3u8" { return .init(body: Self.mediaPlaylist(segments)) } + guard let index = segments.firstIndex(where: { "/" + $0 == path }) else { return .init(status: 404) } + // Segment 2 trickles, so the seek below lands while it is mid-body. + return .init(body: Self.transportStream(marker: UInt8(index)), trickleUs: index == 2 ? 200_000 : 0) + } + let made = try await HLSVODIngestReader.makeIfHEVCMPEGTS( + playlistURL: server.url("/vod.m3u8"), httpHeaders: [:], persistentHTTP1: true) + let reader = try XCTUnwrap(made) + defer { reader.close() } + + var head = [UInt8](repeating: 0, count: 188) + XCTAssertEqual(head.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 188) }, 188) + try await waitUntil { server.requests.contains { $0.path == "/seg2.ts" } } + + XCTAssertTrue(reader.seek(to: 26)) // segment 4 contains 26 s, the restart is one earlier + let stream = Self.drain(reader) + XCTAssertEqual(stream.count, 3 * 188 * 3) + XCTAssertEqual(stream[Self.markerOffset], 3) + XCTAssertEqual(server.connectionCount, 2, "the cancelled body cost its connection, nothing more") + } + + func testServerCloseOpensAFreshConnection() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + server.route = { path in .init(body: Data(path.utf8), connectionClose: path == "/b") } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + for path in ["/a", "/b", "/c", "/d"] { + let answer = try await transport.get(server.url(path), headers: [:], limit: 1024) + XCTAssertEqual(answer.response.statusCode, 200) + XCTAssertEqual(String(decoding: answer.body, as: UTF8.self), path) + } + XCTAssertEqual(server.requests.map(\.connection), [1, 1, 2, 2]) + } + + func testIdleConnectionDroppedByTheOriginIsRetriedOnce() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + // Hangs up after every response without saying so, which is what an origin's idle timeout + // looks like to the next request on that connection. + server.route = { path in .init(body: Data(path.utf8), silentClose: true) } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + for path in ["/a", "/b", "/c"] { + let answer = try await transport.get(server.url(path), headers: [:], limit: 1024) + XCTAssertEqual(String(decoding: answer.body, as: UTF8.self), path) + } + XCTAssertEqual(server.requests.map(\.path), ["/a", "/b", "/c"]) + XCTAssertEqual(server.connectionCount, 3) + } + + func testChunkedBodyIsDecodedAndKeepsTheConnection() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + let body = Data((0..<5000).map { UInt8($0 & 0xFF) }) + server.route = { _ in .init(body: body, chunked: true) } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + for _ in 0..<3 { + let answer = try await transport.get(server.url("/c"), headers: [:], limit: 1 << 20) + XCTAssertEqual(answer.body, body) + } + XCTAssertEqual(server.connectionCount, 1) + } + + func testRefusalKeepsTheConnectionAndReportsItsStatus() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + server.route = { path in path == "/denied" ? .init(status: 403, body: Data("no".utf8)) : .init(body: Data("ok".utf8)) } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + let refused = try await transport.get(server.url("/denied"), headers: [:], limit: 1024) + XCTAssertEqual(refused.response.statusCode, 403) + XCTAssertTrue(refused.body.isEmpty) + let served = try await transport.get(server.url("/fine"), headers: [:], limit: 1024) + XCTAssertEqual(served.body, Data("ok".utf8)) + XCTAssertEqual(server.connectionCount, 1) + } + + func testBodyOverTheLimitIsRefused() async throws { + let server = try XCTUnwrap(KeepAliveOrigin()) + defer { server.stop() } + server.route = { _ in .init(body: Data(count: 4096)) } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + do { + _ = try await transport.get(server.url("/big"), headers: [:], limit: 1024) + XCTFail("a 4 KB body passed a 1 KB limit") + } catch let error as BoundedFetch.Exceeded { + XCTAssertEqual(error.limit, 1024) + } + } + + func testCrossOriginRedirectKeepsOneConnectionPerOriginAndDropsCredentials() async throws { + let cdn = try XCTUnwrap(KeepAliveOrigin()) + defer { cdn.stop() } + let edge = try XCTUnwrap(KeepAliveOrigin()) + defer { edge.stop() } + cdn.route = { path in .init(body: Data(path.utf8)) } + edge.route = { path in .init(status: 302, headers: ["Location": cdn.url(path).absoluteString]) } + let transport = PersistentHTTP1Transport(label: "test") + defer { transport.close() } + + for path in ["/1.ts", "/2.ts", "/3.ts"] { + let answer = try await transport.get( + edge.url(path), headers: ["Authorization": "secret", "X-Plain": "kept"], limit: 1024) + XCTAssertEqual(String(decoding: answer.body, as: UTF8.self), path) + XCTAssertEqual(answer.response.url, cdn.url(path)) + } + XCTAssertEqual(edge.connectionCount, 1) + XCTAssertEqual(cdn.connectionCount, 1) + XCTAssertTrue(edge.requests.allSatisfy { $0.headers["authorization"] == "secret" }) + XCTAssertTrue(cdn.requests.allSatisfy { $0.headers["authorization"] == nil }) + XCTAssertTrue(cdn.requests.allSatisfy { $0.headers["x-plain"] == "kept" }) + } + + func testWholeResourceRequestCarriesNoRange() throws { + let url = try XCTUnwrap(URL(string: "https://media.example/api/ts?url=a%2Fb.ts")) + let text = String(decoding: try HeldSourceConnection.requestBytes( + target: url, host: "media.example", port: 443, secure: true, + offset: nil, extraHeaders: [:], userAgent: nil), as: UTF8.self) + XCTAssertTrue(text.hasPrefix("GET /api/ts?url=a%2Fb.ts HTTP/1.1\r\nHost: media.example\r\n")) + XCTAssertFalse(text.lowercased().contains("range:")) + XCTAssertTrue(text.contains("Connection: keep-alive\r\n")) + } + + // MARK: - Helpers + + static let markerOffset = 100 + + private static func mediaPlaylist(_ segments: [String]) -> Data { + var text = "#EXTM3U\n#EXT-X-TARGETDURATION:6\n" + for segment in segments { text += "#EXTINF:6,\n\(segment)\n" } + return Data((text + "#EXT-X-ENDLIST").utf8) + } + + /// Three TS packets whose PMT declares HEVC (0x24); the marker sits in the PMT packet's filler. + private static func transportStream(marker: UInt8) -> Data { + var bytes = [UInt8](repeating: 0xFF, count: 188 * 3) + for packet in 0..<3 { + bytes[packet * 188] = 0x47 + bytes[packet * 188 + 3] = 0x10 + } + let pmt: [UInt8] = [0x40, 0x64, 0x10, 0, 0x02, 0xB0, 18, 0, 1, 0xC1, 0, 0, + 0xE1, 0, 0xF0, 0, 0x24, 0xE1, 1, 0xF0, 0] + bytes.replaceSubrange(1..<(1 + pmt.count), with: pmt) + bytes[markerOffset] = marker + return Data(bytes) + } + + private static func drain(_ reader: HLSVODIngestReader) -> [UInt8] { + var out: [UInt8] = [] + var buffer = [UInt8](repeating: 0, count: 4096) + while true { + let count = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 4096) } + if count <= 0 { return out } + out += buffer[0.. Bool) async throws { + let deadline = Date().addingTimeInterval(timeout) + while !condition() { + guard Date() < deadline else { return XCTFail("condition not met in \(timeout) s") } + try await Task.sleep(nanoseconds: 10_000_000) + } + } +} + +/// A loopback HTTP/1.1 origin that keeps connections alive and records which connection carried +/// each request. +final class KeepAliveOrigin: @unchecked Sendable { + struct Reply { + var status = 200 + var headers: [String: String] = [:] + var body = Data() + var chunked = false + /// Answers with `Connection: close` and hangs up. + var connectionClose = false + /// Hangs up after the response without announcing it. + var silentClose = false + /// Sends the body one 188-byte packet per interval. + var trickleUs: useconds_t = 0 + + init(status: Int = 200, headers: [String: String] = [:], body: Data = Data(), + chunked: Bool = false, connectionClose: Bool = false, silentClose: Bool = false, + trickleUs: useconds_t = 0) { + self.status = status + self.headers = headers + self.body = body + self.chunked = chunked + self.connectionClose = connectionClose + self.silentClose = silentClose + self.trickleUs = trickleUs + } + } + + struct Request { + let connection: Int + let path: String + let requestLine: String + let headers: [String: String] + } + + private let listener: LoopbackListener + private let lock = NSLock() + private var _route: @Sendable (String) -> Reply = { _ in Reply(status: 404) } + private var _requests: [Request] = [] + private var _connections = 0 + private var _fds: [Int32] = [] + private var stopped = false + + init?() { + guard let listener = LoopbackListener() else { return nil } + self.listener = listener + listener.start { [self] fd in admit(fd) } + } + + var route: @Sendable (String) -> Reply { + get { lock.withLock { _route } } + set { lock.withLock { _route = newValue } } + } + + var requests: [Request] { lock.withLock { _requests } } + var connectionCount: Int { lock.withLock { _connections } } + + func url(_ path: String) -> URL { + URL(string: "http://127.0.0.1:\(listener.port)\(path)")! + } + + func stop() { + lock.lock() + let already = stopped + stopped = true + for fd in _fds { shutdown(fd, SHUT_RDWR) } + lock.unlock() + if !already { listener.stop() } + } + + private func admit(_ fd: Int32) -> Bool { + lock.lock() + if stopped { + lock.unlock() + close(fd) + return false + } + _connections += 1 + let id = _connections + _fds.append(fd) + lock.unlock() + Thread.detachNewThread { [self] in serve(fd, id: id) } + return true + } + + private func serve(_ fd: Int32, id: Int) { + defer { + lock.lock() + _fds.removeAll { $0 == fd } + close(fd) + lock.unlock() + } + var leftover = Data() + while true { + guard let (head, rest) = readHead(fd, leftover: leftover) else { return } + leftover = rest + let lines = head.components(separatedBy: "\r\n") + let requestLine = lines.first ?? "" + let parts = requestLine.components(separatedBy: " ") + let path = parts.count >= 2 ? parts[1] : "?" + var headers: [String: String] = [:] + for line in lines.dropFirst() { + guard let colon = line.firstIndex(of: ":") else { continue } + headers[line[.. Reply = lock.withLock { + _requests.append(Request(connection: id, path: path, requestLine: requestLine, headers: headers)) + return _route + } + let reply = route(path) + if !respond(fd, reply) || reply.connectionClose || reply.silentClose { return } + } + } + + private func respond(_ fd: Int32, _ reply: Reply) -> Bool { + var head = "HTTP/1.1 \(reply.status) X\r\n" + for (name, value) in reply.headers { head += "\(name): \(value)\r\n" } + if reply.chunked { + head += "Transfer-Encoding: chunked\r\n" + } else { + head += "Content-Length: \(reply.body.count)\r\n" + } + if reply.connectionClose { head += "Connection: close\r\n" } + head += "\r\n" + guard send(fd, Data(head.utf8)) else { return false } + if reply.chunked { + var offset = 0 + while offset < reply.body.count { + let piece = reply.body[offset.. 0 else { return send(fd, reply.body) } + var offset = 0 + while offset < reply.body.count { + let end = min(reply.body.count, offset + 188) + guard send(fd, reply.body[offset.. (String, Data)? { + var collected = leftover + var buffer = [UInt8](repeating: 0, count: 16 * 1024) + let terminator = Data("\r\n\r\n".utf8) + while collected.range(of: terminator) == nil { + let n = recv(fd, &buffer, buffer.count, 0) + guard n > 0 else { return nil } + collected.append(contentsOf: buffer[0.. Bool { + data.withUnsafeBytes { raw in + var sent = 0 + while sent < raw.count { + let n = write(fd, raw.baseAddress! + sent, raw.count - sent) + guard n > 0 else { return false } + sent += n + } + return true + } + } +} diff --git a/Tests/AetherEngineTests/Issue733PlaylistOnForwardOnlyOpenTests.swift b/Tests/AetherEngineTests/Issue733PlaylistOnForwardOnlyOpenTests.swift new file mode 100644 index 000000000..05990fbd3 --- /dev/null +++ b/Tests/AetherEngineTests/Issue733PlaylistOnForwardOnlyOpenTests.swift @@ -0,0 +1,50 @@ +// AE#733: a playlist endpoint that answers every request with a 200 and no Content-Length (a +// dynamic `/api/playlist?id=` handler writing chunked) never reached the AE#268 ingest. The ranged +// open's 200 carried no length, so audit DMX-101 hung up at the head and the open went forward-only +// on one unranged GET. The AE#154 `#EXTM3U` classification only ever looked at the persistent +// window, which that path leaves empty, so FFmpeg was handed the playlist and the load ended in +// "Invalid data found when processing input". Measured with aetherctl against a loopback origin: +// the same playlist with a Content-Length rerouted and played, chunked or length-less failed. +import Foundation +import Testing +@testable import AetherEngine + +@Suite("AE#733 a playlist served without a length is still classified", .serialized) +struct Issue733PlaylistOnForwardOnlyOpenTests { + + private static let playlist = Data(""" + #EXTM3U + #EXT-X-VERSION:3 + #EXT-X-TARGETDURATION:10 + #EXT-X-PLAYLIST-TYPE:VOD + #EXTINF:10.0, + /api/ts?url=https%3A%2F%2Forigin.example%2Fseg000.ts + #EXT-X-ENDLIST + + """.utf8) + + @Test("a length-less 200 playlist fails the VOD open typed, not as invalid data") + func lengthlessPlaylistIsClassified() throws { + let server = try #require(ScriptedOriginServer { _ in + .init(status: 200, declaredLength: nil, close: true, body: Self.playlist) + }) + defer { server.stop() } + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/api/playlist?id=42")!) + defer { reader.markClosed(); reader.close() } + #expect(throws: AVIOReaderError.hlsPlaylistOnVODPath) { try reader.open() } + } + + @Test("a length-less 200 media body still opens forward-only") + func lengthlessMediaStillOpens() throws { + var ts = Data(count: 188 * 64) + for i in stride(from: 0, to: ts.count, by: 188) { ts[i] = 0x47 } + let body = ts + let server = try #require(ScriptedOriginServer { _ in + .init(status: 200, declaredLength: nil, close: true, body: body) + }) + defer { server.stop() } + let reader = AVIOReader(url: URL(string: "http://127.0.0.1:\(server.port)/live.ts")!) + defer { reader.markClosed(); reader.close() } + try reader.open() + } +} diff --git a/Tests/AetherEngineTests/Issue735FormatDescriptionsOffMainTests.swift b/Tests/AetherEngineTests/Issue735FormatDescriptionsOffMainTests.swift new file mode 100644 index 000000000..8149c5a0e --- /dev/null +++ b/Tests/AetherEngineTests/Issue735FormatDescriptionsOffMainTests.swift @@ -0,0 +1,42 @@ +import AVFoundation +import Foundation +import Testing +@testable import AetherEngine + +/// AE#735: `load(.formatDescriptions)` runs on the caller's actor, and the first audio description in a +/// process loads the audio DSP stack through dyld (3.8 s on an Apple TV 4K). The native host's track reads +/// are main-actor code, so they go through a helper that runs the load off it; it must still resolve. +@Suite struct Issue735FormatDescriptionsOffMainTests { + + @Test @MainActor func trackFormatDescriptionsStillResolve() async throws { + let url = FileManager.default.temporaryDirectory + .appendingPathComponent("ae735-\(UUID().uuidString).wav") + try Self.silentWAV(channels: 2, sampleRate: 48_000, frames: 4_800).write(to: url) + defer { try? FileManager.default.removeItem(at: url) } + + let track = try #require(try await AVURLAsset(url: url).loadTracks(withMediaType: .audio).first) + let description = try #require(await NativeAVPlayerHost.formatDescriptions(of: track).first) + let asbd = try #require(CMAudioFormatDescriptionGetStreamBasicDescription(description)).pointee + #expect(asbd.mChannelsPerFrame == 2) + #expect(asbd.mSampleRate == 48_000) + } + + @Test func aFailedLoadYieldsNil() async { + struct Refused: Error {} + let value: Int? = await NativeAVPlayerHost.loadOffMainActor { throw Refused() } + #expect(value == nil) + } + + private static func silentWAV(channels: UInt16, sampleRate: UInt32, frames: UInt32) -> Data { + let blockAlign = channels * 2 + let dataSize = frames * UInt32(blockAlign) + var data = Data() + func append(_ value: T) { withUnsafeBytes(of: value.littleEndian) { data.append(contentsOf: $0) } } + data.append(contentsOf: Array("RIFF".utf8)); append(UInt32(36 + dataSize)) + data.append(contentsOf: Array("WAVEfmt ".utf8)); append(UInt32(16)); append(UInt16(1)) + append(channels); append(sampleRate); append(sampleRate * UInt32(blockAlign)); append(blockAlign); append(UInt16(16)) + data.append(contentsOf: Array("data".utf8)); append(dataSize) + data.append(Data(count: Int(dataSize))) + return data + } +} diff --git a/Tests/AetherEngineTests/Issue93SlowSegmentServeTests.swift b/Tests/AetherEngineTests/Issue93SlowSegmentServeTests.swift index 6bd70094c..8cbf0224e 100644 --- a/Tests/AetherEngineTests/Issue93SlowSegmentServeTests.swift +++ b/Tests/AetherEngineTests/Issue93SlowSegmentServeTests.swift @@ -8,6 +8,7 @@ import Foundation /// request accumulated -12889 strikes toward failedToPlayToEndTime. A serve /// that cannot deliver promptly must now emit response headers early /// (Transfer-Encoding: chunked) and stream the body when the segment lands. +@Suite(.offCooperativePool) struct Issue93SlowSegmentServeTests { private final class Counter: @unchecked Sendable { @@ -31,7 +32,7 @@ struct Issue93SlowSegmentServeTests { fired.bump() didFire.signal() } - let armed = didFire.wait(timeout: .now() + 15) == .success + let armed = didFire.wait(timeout: .now() + 120) == .success signal.complete() #expect(armed) #expect(fired.value == 1) @@ -107,7 +108,8 @@ struct Issue93SlowSegmentServeTests { private func makeProvider(cache: SegmentCache, isLive: Bool = false, slowThreshold: TimeInterval, restartHandler: ((Int) -> Void)? = { _ in }, - restartActivity: (() -> Bool)? = { false }) -> VideoSegmentProvider { + restartActivity: (() -> Bool)? = { false }, + segmentPlacedHandler: (@Sendable (Int) -> Void)? = nil) -> VideoSegmentProvider { VideoSegmentProvider( cache: cache, segments: segments(60), codecsString: "hvc1", supplementalCodecs: nil, resolution: (1920, 1080), videoRange: .sdr, frameRate: 24.0, hdcpLevel: nil, @@ -116,21 +118,48 @@ struct Issue93SlowSegmentServeTests { restartActivity: restartActivity, repositionWaitSlice: 0.05, repositionRideCapSeconds: 5.0, - slowServeThresholdSeconds: slowThreshold + slowServeThresholdSeconds: slowThreshold, + segmentPlacedHandler: segmentPlacedHandler ) } - @Test("a cache hit never signals slow") - func cacheHitDoesNotSignal() { + @Test("cached bytes survive a slow notification without restarting the producer", + .timeLimit(.minutes(1)), arguments: [false, true]) + func cacheHitSurvivesSlowNotification(holdServeUntilSignal: Bool) async throws { let cache = SegmentCache(forwardWindow: 10, backwardWindow: 10) defer { cache.close() } - cache.store(index: 5, data: Data(repeating: 0xAB, count: 16)) + let payload = Data(repeating: 0xAB, count: 16) + cache.store(index: 5, data: payload) let fired = Counter() - let provider = makeProvider(cache: cache, slowThreshold: 0.02) - let data = provider.mediaSegment(at: 5, onSlow: { fired.bump() }) - Thread.sleep(forTimeInterval: 0.15) - #expect(data != nil) - #expect(fired.value == 0) + let restarts = Counter() + let releaseServe = DispatchSemaphore(value: 0) + let provider = makeProvider( + cache: cache, slowThreshold: 0.02, + restartHandler: { _ in restarts.bump() }, + segmentPlacedHandler: { _ in + if holdServeUntilSignal { releaseServe.wait() } + }) + // A resident segment can still spend the threshold waiting to be scheduled. The early + // header is valid then too; cache residency is not a wall-clock completion guarantee. + let data: Data? = await withTaskCancellationHandler { + await withCheckedContinuation { continuation in + Thread.detachNewThread { + let data = provider.mediaSegment(at: 5, onSlow: { + fired.bump() + releaseServe.signal() + }) + continuation.resume(returning: data) + } + } + } onCancel: { + // Let the blocking serve return so the test's time limit can report a missing signal. + releaseServe.signal() + } + try Task.checkCancellation() + #expect(data == payload) + #expect(restarts.value == 0) + #expect(fired.value <= 1) + if holdServeUntilSignal { #expect(fired.value == 1) } } @Test("a serve that outlives the threshold signals slow exactly once") @@ -215,8 +244,10 @@ struct Issue93SlowSegmentServeTests { } } - /// Raw-socket GET: returns the response bytes plus the time to first byte, - /// reading until EOF or `deadline` elapses with no new bytes. + /// Raw-socket GET: returns the response bytes plus the time to first byte, reading until the + /// response is complete, the server ends the connection, or `deadline` elapses with no new + /// bytes. The server keeps the connection alive, so without the completion check the idle + /// deadline would be what ends a good response, and a slow body on a loaded runner would be cut. private static func rawGET(port: UInt16, path: String, deadline: TimeInterval) -> (bytes: Data, firstByteAfter: TimeInterval) { let fd = socket(AF_INET, SOCK_STREAM, 0) @@ -254,8 +285,11 @@ struct Issue93SlowSegmentServeTests { } collected.append(contentsOf: buf[0.. deadline { break } @@ -264,6 +298,20 @@ struct Issue93SlowSegmentServeTests { return (collected, firstByteAfter) } + private static func responseIsComplete(_ raw: Data) -> Bool { + guard raw.range(of: Data("\r\n\r\n".utf8)) != nil else { return false } + let (header, body) = splitResponse(raw) + if header.contains("Transfer-Encoding: chunked") { + return body.suffix(HLSLocalServer.chunkedFinal.count).elementsEqual(HLSLocalServer.chunkedFinal) + } + for line in header.split(whereSeparator: \.isNewline) + where line.lowercased().hasPrefix("content-length:") { + let value = line.split(separator: ":", maxSplits: 1).last ?? "" + if let length = Int(value.trimmingCharacters(in: .whitespaces)) { return body.count >= length } + } + return false + } + /// Splits an HTTP/1.1 response blob into (headerString, bodyData). private static func splitResponse(_ raw: Data) -> (header: String, body: Data) { guard let sep = raw.range(of: Data("\r\n\r\n".utf8)) else { return ("", Data()) } @@ -296,7 +344,7 @@ struct Issue93SlowSegmentServeTests { try server.start() defer { server.stop() } - let (raw, _) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 1.0) + let (raw, _) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 30) let (header, body) = Self.splitResponse(raw) #expect(header.contains("200 OK")) #expect(header.contains("Content-Length: \(payload.count)")) @@ -314,7 +362,7 @@ struct Issue93SlowSegmentServeTests { try server.start() defer { server.stop() } - let (raw, firstByteAfter) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 1.0) + let (raw, firstByteAfter) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 30) let (header, body) = Self.splitResponse(raw) #expect(firstByteAfter >= 0) #expect(firstByteAfter < 0.7, "header must arrive near the slow signal, got \(firstByteAfter)s") @@ -330,7 +378,7 @@ struct Issue93SlowSegmentServeTests { try server.start() defer { server.stop() } - let (raw, firstByteAfter) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 1.5) + let (raw, firstByteAfter) = Self.rawGET(port: server.port, path: "/\(server.pathToken)/seg1.mp4", deadline: 30) let (header, body) = Self.splitResponse(raw) #expect(firstByteAfter >= 0) #expect(header.contains("Transfer-Encoding: chunked")) diff --git a/Tests/AetherEngineTests/ItemSwapStillTests.swift b/Tests/AetherEngineTests/ItemSwapStillTests.swift new file mode 100644 index 000000000..f9c0f1611 --- /dev/null +++ b/Tests/AetherEngineTests/ItemSwapStillTests.swift @@ -0,0 +1,416 @@ +import Testing +import Foundation +import AVFoundation +@testable import AetherEngine + +@Suite("AE#711 follow-up: the native picture held across an in-place item swap", .serialized, + .timeLimit(.minutes(1))) +@MainActor +struct ItemSwapStillTests { + + /// The macOS CI runner's `AVPlayerItemVideoOutput` vends no frame for a paused item, not even + /// after a zero-tolerance seek to where it stands (CI on a3852899 and on #722); a playing one it + /// does. A Mac and an Apple TV answer paused in ~20 ms, and the hold reads paused by design, so + /// the tests that need a paused read run everywhere but there. + nonisolated static let vendsPausedFrames = ProcessInfo.processInfo.environment["GITHUB_ACTIONS"] == nil + + /// Four seconds of H.264 plus silent AAC, long enough to still be playing when the capture runs + /// and with an audio stream for the audio-switch rebuild to name. The shared fixtures end after + /// 0.2 s, before an output attached to them sees a frame. + private static func fixtureURL() async throws -> URL { + let file = FileManager.default.temporaryDirectory + .appendingPathComponent("ae711-still-\(UUID().uuidString).mp4") + let writer = try AVAssetWriter(outputURL: file, fileType: .mp4) + let video = AVAssetWriterInput(mediaType: .video, outputSettings: [ + AVVideoCodecKey: AVVideoCodecType.h264, AVVideoWidthKey: 128, AVVideoHeightKey: 72, + ]) + let adaptor = AVAssetWriterInputPixelBufferAdaptor(assetWriterInput: video, sourcePixelBufferAttributes: [ + kCVPixelBufferPixelFormatTypeKey as String: kCVPixelFormatType_32BGRA, + kCVPixelBufferWidthKey as String: 128, kCVPixelBufferHeightKey as String: 72, + ]) + let audio = AVAssetWriterInput(mediaType: .audio, outputSettings: [ + AVFormatIDKey: kAudioFormatMPEG4AAC, AVSampleRateKey: 48_000, AVNumberOfChannelsKey: 1, + ]) + writer.add(video) + writer.add(audio) + #expect(writer.startWriting()) + writer.startSession(atSourceTime: .zero) + + var asbd = AudioStreamBasicDescription( + mSampleRate: 48_000, mFormatID: kAudioFormatLinearPCM, + mFormatFlags: kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked, + mBytesPerPacket: 2, mFramesPerPacket: 1, mBytesPerFrame: 2, mChannelsPerFrame: 1, + mBitsPerChannel: 16, mReserved: 0) + var formatOut: CMAudioFormatDescription? + CMAudioFormatDescriptionCreate(allocator: nil, asbd: &asbd, layoutSize: 0, layout: nil, + magicCookieSize: 0, magicCookie: nil, extensions: nil, + formatDescriptionOut: &formatOut) + let audioFormat = try #require(formatOut) + + // One loop feeds both tracks, each whenever IT is ready, and never waits on either. The + // writer interleaves: it stops taking video once video is far enough ahead of audio, and + // then takes nothing more until audio catches up. With a `requestMediaDataWhenReady` block + // per track that catching up depends on AVFoundation calling the audio block again, and on + // a loaded CI runner it did not: `video 88/120 ready=false, audio 21/40 ready=true`, the + // audio block called once in total, until the deadline below. A loop that waits on one + // track at a time deadlocks the same way from the other side. + let chunk = 4800 + var frame = 0 + var chunks = 0 + var videoDone = false + var audioDone = false + let deadline = ContinuousClock.now + .seconds(20) + while !(videoDone && audioDone), writer.status == .writing, ContinuousClock.now < deadline { + var fed = false + if !videoDone, video.isReadyForMoreMediaData { + // Our own buffer, not one from the adaptor's pool: that pool belongs to the + // writer, and drawing from it under load segfaulted the whole test process + // inside CVPixelBufferPoolCreatePixelBuffer. + var buffer: CVPixelBuffer? + CVPixelBufferCreate(nil, 128, 72, kCVPixelFormatType_32BGRA, nil, &buffer) + if let pixels = buffer { + CVPixelBufferLockBaseAddress(pixels, []) + memset(CVPixelBufferGetBaseAddress(pixels), Int32(frame * 2 % 256), + CVPixelBufferGetDataSize(pixels)) + CVPixelBufferUnlockBaseAddress(pixels, []) + if adaptor.append(pixels, withPresentationTime: CMTime(value: CMTimeValue(frame), timescale: 30)) { + frame += 1 + fed = true + } + } + if frame >= 120 { + video.markAsFinished() + videoDone = true + } + } + if !audioDone, audio.isReadyForMoreMediaData { + var block: CMBlockBuffer? + CMBlockBufferCreateWithMemoryBlock( + allocator: nil, memoryBlock: nil, blockLength: chunk * 2, blockAllocator: nil, + customBlockSource: nil, offsetToData: 0, dataLength: chunk * 2, + flags: kCMBlockBufferAssureMemoryNowFlag, blockBufferOut: &block) + var sample: CMSampleBuffer? + if let data = block { + CMBlockBufferFillDataBytes(with: 0, blockBuffer: data, offsetIntoDestination: 0, + dataLength: chunk * 2) + CMAudioSampleBufferCreateReadyWithPacketDescriptions( + allocator: nil, dataBuffer: data, formatDescription: audioFormat, + sampleCount: chunk, + presentationTimeStamp: CMTime(value: CMTimeValue(chunks * chunk), timescale: 48_000), + packetDescriptions: nil, sampleBufferOut: &sample) + } + if let sample, audio.append(sample) { + chunks += 1 + fed = true + } + if chunks >= 40 { + audio.markAsFinished() + audioDone = true + } + } + if !fed { try await Task.sleep(for: .milliseconds(5)) } + } + guard videoDone, audioDone else { + let state = "video \(frame)/120 ready=\(video.isReadyForMoreMediaData), " + + "audio \(chunks)/40 ready=\(audio.isReadyForMoreMediaData)" + writer.cancelWriting() + throw FixtureWriterFailed(status: writer.status.rawValue, error: writer.error, state: state) + } + await writer.finishWriting() + #expect(writer.status == .completed) + return file + } + + @Test("a playing native item hands over the frame on screen") + func playingCapture() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + #expect(engine.state == .playing) + // A playing item needs ~300 ms before a fresh output sees a frame (measured here); the + // rebuild pauses first for that reason, but the playing read still has to work. The timeout + // only has to catch an output that never vends: 2 s ran out once in a starved CI run (this + // test took 22.7 s) with the item still playing. + let frame = await host.captureDisplayedFrame(timeout: .seconds(15)) + #expect(frame != nil, "no frame while \(engine.state)") + #expect(engine.state == .playing) + } + + @Test("a paused native item still hands over the frame on screen", .enabled(if: ItemSwapStillTests.vendsPausedFrames)) + func pausedCapture() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + engine.pause() + let started = ContinuousClock.now + let frame = await host.captureDisplayedFrame() + #expect(ContinuousClock.now - started < .milliseconds(500)) + #expect(frame != nil) + } + + @Test("an audio-switch rebuild holds the picture over the swap and drops it at the next first frame", .enabled(if: ItemSwapStillTests.vendsPausedFrames)) + func rebuildHoldsThePicture() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + let audioIndex = try #require(engine.activeAudioTrackIndex) + + var held = false + let watcher = Task { @MainActor in + while !Task.isCancelled { + if view.isHoldingStill { held = true } + try? await Task.sleep(for: .milliseconds(2)) + } + } + let failure = await engine.reloadWithAudioOverride( + url: file, audioStreamIndex: Int32(audioIndex), expectedGeneration: engine.loadGeneration) + #expect(failure == nil) + try await waitFor { !view.isHoldingStill } + watcher.cancel() + + #expect(held) + #expect(engine.heldPictureLastRelease == "first frame of the next item") + #expect(engine.nativeHost === host) + #expect(engine.heldPictureView == nil) + } + + @Test("stop takes a held picture down", .enabled(if: ItemSwapStillTests.vendsPausedFrames)) + func stopReleasesTheHold() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + engine.pause() + await engine.holdPictureAcrossItemSwap() + #expect(view.isHoldingStill) + engine.stop() + #expect(!view.isHoldingStill) + #expect(engine.heldPictureLastRelease == "stop") + #expect(engine.heldPictureView == nil) + } + + /// A host shaped like Sodalite: AVKit renders the native path, no `AetherPlayerView` is bound, + /// and a still view is the only surface the engine has. Before it existed the hold returned + /// without a trace (device log 2026-10-07: no `held picture` line at all). + @Test("an AVKit host's still view carries the hold through the rebuild", .enabled(if: ItemSwapStillTests.vendsPausedFrames)) + func stillViewCarriesTheHold() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + let still = AetherStillView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bindStillView(still) + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + let audioIndex = try #require(engine.activeAudioTrackIndex) + + var held = false + let watcher = Task { @MainActor in + while !Task.isCancelled { + if still.isHoldingStill { held = true } + try? await Task.sleep(for: .milliseconds(2)) + } + } + let failure = await engine.reloadWithAudioOverride( + url: file, audioStreamIndex: Int32(audioIndex), expectedGeneration: engine.loadGeneration) + #expect(failure == nil) + try await waitFor { !still.isHoldingStill } + watcher.cancel() + + #expect(held) + #expect(engine.heldPictureLastSkip == nil) + #expect(engine.heldPictureLastRelease == "first frame of the next item") + } + + @Test("with no surface bound the hold says so instead of returning silently") + func noSurfaceIsLogged() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + engine.pause() + await engine.holdPictureAcrossItemSwap() + #expect(engine.heldPictureLastSkip == "no surface bound") + #expect(engine.heldPictureView == nil) + } + + @Test("a bound still view wins over the player view, and unbinding it takes the picture down", .enabled(if: ItemSwapStillTests.vendsPausedFrames)) + func stillViewWinsAndUnbindReleases() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + let still = AetherStillView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + engine.bindStillView(still) + _ = try await engine.load(url: file) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + engine.pause() + await engine.holdPictureAcrossItemSwap() + #expect(still.isHoldingStill) + #expect(!view.isHoldingStill) + engine.unbindStillView(still) + #expect(!still.isHoldingStill) + #expect(engine.heldPictureLastRelease == "still view unbound") + } + + @Test("PiP and external playback hold nothing") + func skipReasons() { + #expect(AetherEngine.heldPictureSkipReason( + pictureInPictureActive: false, externalPlaybackActive: false) == nil) + #expect(AetherEngine.heldPictureSkipReason( + pictureInPictureActive: true, externalPlaybackActive: false) != nil) + #expect(AetherEngine.heldPictureSkipReason( + pictureInPictureActive: false, externalPlaybackActive: true) != nil) + } + + @Test("only Dolby Vision without a displayable base layer is reshaped from the segment") + func reshapingRule() { + #expect(AetherEngine.heldPictureNeedsReshaping(videoFormat: .dolbyVision, dolbyVisionProfile: 5)) + #expect(AetherEngine.heldPictureNeedsReshaping(videoFormat: .dolbyVision, dolbyVisionProfile: 10)) + #expect(!AetherEngine.heldPictureNeedsReshaping(videoFormat: .dolbyVision, dolbyVisionProfile: 8)) + #expect(!AetherEngine.heldPictureNeedsReshaping(videoFormat: .hdr10, dolbyVisionProfile: 5)) + } + + /// The fixture paints frame n at grey level 2n, so the frame a still came from can be read off it. + @Test("a still measured from the first frame lands on the frame it names") + func snapshotAfterFirstFrameIsFrameAccurate() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let extractor = FrameExtractor(url: file) + defer { Task { await extractor.shutdown() } } + // This file's first frame sits at 0, so both axes name the same frame. Grey 2n per frame + // n means a frame off reads two (plus colour conversion) levels off. + let relative = try #require(await extractor.snapshot(afterFirstFrameBy: 1.0)) + let absolute = try #require(await extractor.snapshot(at: 1.0)) + let earlier = try #require(await extractor.snapshot(afterFirstFrameBy: 0.5)) + let grey = try #require(Self.centreGrey(relative)) + #expect(grey == Self.centreGrey(absolute)) + #expect(grey > (Self.centreGrey(earlier) ?? .max)) + } + + @Test("a software-path audio rebuild holds the renderer's picture until the next host's first frame") + func softwareRebuildHoldsThePicture() async throws { + let file = try await Self.fixtureURL() + defer { try? FileManager.default.removeItem(at: file) } + let engine = try AetherEngine() + defer { engine.stop() } + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + var options = LoadOptions() + options.preferredDecodePath = .software + _ = try await engine.load(url: file, options: options) + #expect(engine.playbackBackend == .software) + let host = try #require(engine.softwareHost) + try await waitFor { host.isVideoReadyForDisplay } + let audioIndex = try #require(engine.activeAudioTrackIndex) + + var held = false + let watcher = Task { @MainActor in + while !Task.isCancelled { + if view.isHoldingStill { held = true } + try? await Task.sleep(for: .milliseconds(2)) + } + } + let failure = await engine.reloadWithAudioOverride( + url: file, audioStreamIndex: Int32(audioIndex), expectedGeneration: engine.loadGeneration) + #expect(failure == nil) + try await waitFor { !view.isHoldingStill } + watcher.cancel() + + #expect(held) + #expect(engine.heldPictureLastRoute == "software renderer") + #expect(engine.heldPictureLastRelease == "first frame of the next host") + #expect(engine.softwareHost !== host) + } + + nonisolated private static let userFixtures = URL(fileURLWithPath: #filePath) + .deletingLastPathComponent().deletingLastPathComponent().deletingLastPathComponent() + .appendingPathComponent("Fixtures/user") + nonisolated static let profile5URL = userFixtures + .appendingPathComponent("Patterns_Of_Nature_DoVi_24_P5_UHD_HEVC-10mbps_DD+JOC-768kbps_iOS.mp4") + nonisolated static let profile81URL = userFixtures + .appendingPathComponent("Patterns_Of_Nature_HDR10-P8.1_UHD_24_H265-10Mbps_DD+JOC-768Kbps.mp4") + + /// Dolby's own Profile 5 signal, which cannot be committed: the base layer is IPTPQc2 and only + /// the RPU makes it a picture, so the hold must come from the reshaping path. + @Test("a Profile 5 title holds a reshaped still", + .enabled(if: FileManager.default.fileExists(atPath: ItemSwapStillTests.profile5URL.path))) + func profile5HoldsAReshapedStill() async throws { + let engine = try AetherEngine() + defer { engine.stop() } + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + _ = try await engine.load(url: Self.profile5URL) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + try await Task.sleep(for: .seconds(1)) + engine.pause() + let started = ContinuousClock.now + await engine.holdPictureAcrossItemSwap() + #expect(ContinuousClock.now - started < .seconds(AetherEngine.heldPictureDolbyVisionBudgetSeconds)) + #expect(engine.videoFormat == .dolbyVision) + #expect(engine.heldPictureLastRoute == "Dolby Vision reshaped") + #expect(view.isHoldingStill) + } + + @Test("a Profile 8.1 title holds its HDR10 base layer from the output", + .enabled(if: FileManager.default.fileExists(atPath: ItemSwapStillTests.profile81URL.path))) + func profile81HoldsTheBaseLayer() async throws { + let engine = try AetherEngine() + defer { engine.stop() } + let view = AetherPlayerView(frame: CGRect(x: 0, y: 0, width: 320, height: 180)) + engine.bind(view: view) + _ = try await engine.load(url: Self.profile81URL) + let host = try #require(engine.nativeHost) + try await waitFor { host.isVideoReadyForDisplay } + engine.pause() + await engine.holdPictureAcrossItemSwap() + #expect(engine.heldPictureLastSkip == nil) + #expect(engine.heldPictureLastRoute == "native output") + #expect(view.isHoldingStill) + } + + private static func centreGrey(_ image: CGImage) -> Int? { + var pixel = [UInt8](repeating: 0, count: 4) + guard let context = CGContext( + data: &pixel, width: 1, height: 1, bitsPerComponent: 8, bytesPerRow: 4, + space: CGColorSpaceCreateDeviceRGB(), + bitmapInfo: CGImageAlphaInfo.premultipliedLast.rawValue) else { return nil } + let x = image.width / 2, y = image.height / 2 + guard let crop = image.cropping(to: CGRect(x: x, y: y, width: 1, height: 1)) else { return nil } + context.draw(crop, in: CGRect(x: 0, y: 0, width: 1, height: 1)) + return Int(pixel[1]) + } +} + +private struct FixtureWriterFailed: Error { + let status: Int + let error: Error? + /// Where each track stood when the wait gave up, read the instant before the cancel. + let state: String +} diff --git a/Tests/AetherEngineTests/LiveDVRLimitsTests.swift b/Tests/AetherEngineTests/LiveDVRLimitsTests.swift new file mode 100644 index 000000000..f8be83a66 --- /dev/null +++ b/Tests/AetherEngineTests/LiveDVRLimitsTests.swift @@ -0,0 +1,246 @@ +import Foundation +import Testing +@testable import AetherEngine + +@Suite("Live DVR resource contract", .timeLimit(.minutes(1))) +struct LiveDVRLimitsTests { + private final class Clock: @unchecked Sendable { + private let lock = NSLock() + private var instant: Double = 0 + var now: Double { lock.lock(); defer { lock.unlock() }; return instant } + func advance(_ seconds: Double) { lock.lock(); instant += seconds; lock.unlock() } + } + + @Test("capacity lifetime is caller-owned and missing deadlines deny history") + func explicitCapacityLifetime() { + let clock = Clock() + let policy = LiveDVRRetentionPolicy(now: { clock.now }) + policy.update(.init(windowSeconds: 60, maximumBytes: 1024, minimumFreeBytes: 0), + availableBytes: 8192, residentBytes: 0) + #expect(policy.snapshot?.retentionBytes == 0) + policy.update(.init(windowSeconds: 60, maximumBytes: 1024, minimumFreeBytes: 0, + capacityValidUntil: 10), availableBytes: 8192, residentBytes: 0) + clock.advance(5) + #expect(policy.snapshot?.retentionBytes == 1024) + clock.advance(6) + #expect(policy.snapshot?.retentionBytes == 0) + } + + @Test("unknown capacity denies history; overflow and explicit budgets remain finite") + func capacityBounds() { + let value = LiveDVRLimits(windowSeconds: .infinity, maximumBytes: .max, minimumFreeBytes: -1, capacityValidUntil: 3) + #expect(value.windowSeconds == nil) + #expect(value.maximumBytes == Int64.max) + #expect(value.minimumFreeBytes == 0) + #expect(value.retentionBytes(availableBytes: nil, residentBytes: .max) == 0) + #expect(value.retentionBytes(availableBytes: .max, residentBytes: .max) == 0) + let unlimited = LiveDVRLimits(windowSeconds: 7200, maximumBytes: .max, minimumFreeBytes: 0) + #expect(unlimited.windowSeconds == 7200) + #expect(unlimited.retentionBytes(availableBytes: .max, residentBytes: .max) == Int.max / 4 * 2) + let fixed = LiveDVRLimits(windowSeconds: 2700, maximumBytes: 128 * 1024 * 1024, + minimumFreeBytes: 256 * 1024 * 1024, capacityValidUntil: 3) + #expect(fixed.retentionBytes(availableBytes: fixed.minimumFreeBytes - 1, residentBytes: 999) == 0) + #expect(fixed.retentionBytes(availableBytes: fixed.minimumFreeBytes + 100, residentBytes: 50) == 150) + } + + @Test("native expansion expires and renews without resetting the session timeline") + func measurementLeaseAndRoute() { + let clock = Clock() + let policy = LiveDVRRetentionPolicy(now: { clock.now }) + #expect(policy.snapshot == nil) + let limits = LiveDVRLimits(windowSeconds: 2700, maximumBytes: 512 * 1024 * 1024, + minimumFreeBytes: 256 * 1024 * 1024, capacityValidUntil: 3) + policy.update(limits, availableBytes: 2 * 1024 * 1024 * 1024, residentBytes: 0) + var timeline = LiveWindow(windowSeconds: 85.9) + timeline.noteEdge(100) + timeline.noteResidentFloor(0) + timeline.setWindowSeconds(policy.snapshot?.windowSeconds) + #expect(timeline.seekableRange?.lowerBound == 0) + clock.advance(3 + 0.001) + #expect(policy.snapshot?.retentionBytes == 0) + timeline.setWindowSeconds(policy.snapshot?.windowSeconds) + #expect(timeline.seekableRange == nil) + policy.update(limits, availableBytes: 2 * 1024 * 1024 * 1024, residentBytes: 0) + #expect(policy.snapshot?.windowSeconds == nil, "Reusing an expired sample must not renew its lease") + let renewed = LiveDVRLimits(windowSeconds: limits.windowSeconds, + maximumBytes: limits.maximumBytes, + minimumFreeBytes: limits.minimumFreeBytes, + capacityValidUntil: clock.now + 3) + policy.update(renewed, availableBytes: 2 * 1024 * 1024 * 1024, residentBytes: 0) + #expect(policy.snapshot?.windowSeconds == 2700) + timeline.setWindowSeconds(policy.snapshot?.windowSeconds) + #expect(timeline.edgeTime == 100) + #expect(timeline.seekableRange == 0...100) + } + + @Test("delayed caller capacity expires at its original deadline without a subsequent probe") + func delayedCapacityDeadline() { + let clock = Clock() + clock.advance(12.9) + let policy = LiveDVRRetentionPolicy(now: { clock.now }) + let limits = LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 13) + policy.update(limits, availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy) + defer { cache.close() } + for index in 0..<20 { cache.store(index: index, data: Data(repeating: 1, count: 10)) } + #expect(cache.count == 20) + #expect(policy.snapshot?.windowSeconds == 2700) + clock.advance(0.101) + // No caller renewal/disable, playlist poll, source finalization or pending-probe completion. + #expect(policy.snapshot?.windowSeconds == nil) + #expect(policy.snapshot?.retentionBytes == 0) + // The existing independent expiry timer invokes this exact cleanup path. + #expect(cache.reconcileExpiredNativeLiveDVRRetention()) + #expect(cache.count == LiveWindowSizing.minSafeSegments) + let invalid = LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: .nan) + policy.update(invalid, availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + #expect(policy.snapshot?.retentionBytes == 0) + } + + @Test("retention keeps a playable suffix and bounds pinned overshoot, even without playlist polls") + func finalizedPayloadBounds() { + let policy = LiveDVRRetentionPolicy(now: { 0 }) + policy.update(LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3), + availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy) + defer { cache.close() } + cache.declareTarget(0) + let payload = Data(repeating: 0xAA, count: 5 * 1024 * 1024) + for index in 0..<20 { cache.store(index: index, data: payload) } + // Eight newest segments + the finite consumer band; never all future entries. + #expect(cache.count <= 10) + #expect(cache.totalBytes <= max(32 * 1024 * 1024, cache.nativeLiveMandatoryBytes)) + #expect(cache.contiguousBackwardFloor(from: 19) == 12) + cache.applyNativeLiveRetentionFloor(19) + #expect(cache.peek(index: 19) != nil) + #expect(cache.peek(index: 7) == nil) + } + + @Test("time and byte tightening applies without discarding cache/session identity") + func tightening() { + let policy = LiveDVRRetentionPolicy(now: { 0 }) + let value = LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3) + policy.update(value, availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy) + defer { cache.close() } + let identity = cache.sessionDir + for index in 0..<20 { cache.store(index: index, data: Data(repeating: 1, count: 10)) } + #expect(cache.count == 20) + cache.applyNativeLiveRetentionFloor(15) + #expect(cache.contiguousBackwardFloor(from: 19) == 12) // eight mandatory edge segments + policy.update(value, availableBytes: nil, residentBytes: cache.totalBytes) + cache.applyNativeLiveRetentionFloor(15) + #expect(cache.sessionDir == identity) + #expect(cache.count == LiveWindowSizing.minSafeSegments) + #expect(policy.snapshot?.windowSeconds == nil) + } + @Test("playlist and producer cap grow in the same live session, then tighten to the actual suffix") + func sharedProviderContract() { + let policy = LiveDVRRetentionPolicy(now: { 0 }) + let initial = LiveDVRLimits(windowSeconds: 60, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3) + policy.update(initial, availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy) + defer { cache.close() } + let provider = VideoSegmentProvider(cache: cache, segments: [], codecsString: "avc1.640028", + supplementalCodecs: nil, resolution: (1920, 1080), + videoRange: .sdr, frameRate: 25, hdcpLevel: nil, + sourceBitrate: 1_000_000, isLive: true, + liveWindowSizing: LiveWindowSizing(targetSegmentDurationSeconds: 4, + dvrWindowSeconds: 60), + nativeLiveDVRPolicy: policy) + for index in 0..<10 { + cache.store(index: index, data: Data(repeating: 1, count: 100)) + provider.appendLiveSegment(index: index, startSeconds: Double(index * 4), durationSeconds: 4) + } + #expect(provider.notePlaylistBuild().firstVisible == 0) + let oldCap = provider.liveResidentParkCap() + policy.update(LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3), + availableBytes: 1024 * 1024 * 1024, residentBytes: cache.totalBytes) + provider.applyNativeLiveDVRRetention() + #expect(provider.liveResidentParkCap() > oldCap) + #expect(provider.notePlaylistBuild().firstVisible == 0) + for index in 10..<25 { + cache.store(index: index, data: Data(repeating: 1, count: 100)) + provider.appendLiveSegment(index: index, startSeconds: Double(index * 4), durationSeconds: 4) + } + #expect(provider.residentFloorOutputSeconds() == 0) + policy.update(LiveDVRLimits(windowSeconds: 16, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3), + availableBytes: 1024 * 1024 * 1024, residentBytes: cache.totalBytes) + provider.applyNativeLiveDVRRetention() + #expect(provider.notePlaylistBuild().firstVisible == 17) // eight safe playback segments + #expect(provider.residentFloorOutputSeconds() == 68) + } + + @Test("expiry between the last finalized prune and headroom check cannot park on stale history") + func expiryBeforeHeadroomAdmission() { + let clock = Clock() + let policy = LiveDVRRetentionPolicy(now: { clock.now }) + policy.update(LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3), + availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy) + defer { cache.close() } + let provider = VideoSegmentProvider(cache: cache, segments: [], codecsString: "avc1.640028", + supplementalCodecs: nil, resolution: (1920, 1080), + videoRange: .sdr, frameRate: 25, hdcpLevel: nil, + sourceBitrate: 1_000_000, isLive: true, + liveWindowSizing: LiveWindowSizing(targetSegmentDurationSeconds: 4, + dvrWindowSeconds: 85.9), + nativeLiveDVRPolicy: policy) + for index in 0..<220 { + cache.store(index: index, data: Data(repeating: 1, count: 100)) + provider.appendLiveSegment(index: index, startSeconds: Double(index * 4), durationSeconds: 4) + } + provider.applyNativeLiveDVRRetention() // the last real finalized-segment prune is still valid + #expect(cache.count == 220) + #expect(cache.count < max(180, provider.liveResidentParkCap())) + clock.advance(3 + 0.001) + // No new segment, playlist request or timer delivery intervenes. Use the exact cache + // admission method called by both producer park checks, after computing the shrunken cap. + let expiredCap = max(180, provider.liveResidentParkCap()) + #expect(cache.count >= expiredCap) + #expect(cache.reconcileExpiredNativeLiveDVRRetention(headroomCap: expiredCap)) + #expect(cache.count == LiveWindowSizing.minSafeSegments) + #expect(provider.residentFloorOutputSeconds() == Double((220 - 8) * 4)) + #expect(policy.snapshot?.windowSeconds == nil) + } + + @Test("the production expiry timer reclaims idle paused history without source or consumer progress") + func independentIdleExpiry() async throws { + let clock = Clock() + let policy = LiveDVRRetentionPolicy(now: { clock.now }) + policy.update(LiveDVRLimits(windowSeconds: 2700, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, capacityValidUntil: 3), + availableBytes: 1024 * 1024 * 1024, residentBytes: 0) + let expired = ProbeTestBox(false) + let cache = SegmentCache(forwardWindow: 1, backwardWindow: 1, nativeLiveDVRPolicy: policy, + onResidentSetChanged: { + let instant = clock.now + if instant > 3 && instant < 4 { + expired.update { $0 = true } + } + }) + defer { cache.close() } + for index in 0..<220 { cache.store(index: index, data: Data(repeating: 1, count: 100)) } + #expect(cache.count == 220) + cache.startNativeLiveDVRExpiryChecks() // the same timer armed by the engine's public setter + cache.startNativeLiveDVRExpiryChecks() // idempotent; no second timer/resource owner + clock.advance(3 + 0.001) + // Only the actual DispatchSource callback can fulfill this observer. No direct prune, + // headroom check, segment append or playlist build is made after expiry. + try await waitFor { expired.value } + #expect(cache.count == LiveWindowSizing.minSafeSegments) + clock.advance(10) // exclude the ordinary close resident-set notification from the expectation + cache.close() + #expect(!cache.reconcileExpiredNativeLiveDVRRetention(headroomCap: 180)) + #expect(cache.count == 0) // a late queued handler cannot resurrect a closed cache + } + +} diff --git a/Tests/AetherEngineTests/LivePacketReplayGuardTests.swift b/Tests/AetherEngineTests/LivePacketReplayGuardTests.swift new file mode 100644 index 000000000..cd683e227 --- /dev/null +++ b/Tests/AetherEngineTests/LivePacketReplayGuardTests.swift @@ -0,0 +1,434 @@ +import Foundation +import XCTest +@testable import AetherEngine + +final class LivePacketReplayGuardTests: XCTestCase { + func testVerifiedReturningPictureReplacesUnflaggedTruncatedOutgoingCopy() { + let damaged = packet(.video, 10, payload: 0xFF) + let intact = packet(.video, 10) + let audio = packet(.audio, 10) + let next = packet(.video, 11) + let signatures = [damaged, audio, next, intact, next] + let order = LivePacketReplayGuard.verifiedPacketOrder(signatures) + XCTAssertEqual(order.map { signatures[$0] }.filter { $0.stream == .video }, [intact, next]) + XCTAssertEqual(order.map { signatures[$0] }.filter { $0.stream == .audio }, [audio]) + let summary = LivePacketReplayGuard.videoBoundarySummary([ + (damaged, false, false, false), (intact, false, false, false) + ]) + XCTAssertEqual(summary.superseded, 1) + } + + func testVerifiedBatchDoesNotCollapseDifferentPresentationTimesOrAudioPayloads() { + let first = packet(.video, 10) + let otherPTS = LivePacketReplayGuard.Signature(stream: .video, dts: first.dts, + pts: first.pts + 1, payload: Data([0xFF])) + let audioA = packet(.audio, 10), audioB = packet(.audio, 10, payload: 0xFF) + let values = [first, audioA, otherPTS, audioB] + XCTAssertEqual(LivePacketReplayGuard.verifiedPacketOrder(values), [0, 1, 2, 3]) + } + + func testBoundaryEvidenceRequiresAnIntactRetainedReplacement() { + let summary = LivePacketReplayGuard.videoBoundarySummary([ + (packet(.video, 10), true, false, false), + (packet(.video, 10, payload: 0xFF), false, false, false), + (packet(.video, 11), true, false, false), + (packet(.video, 11), false, true, false), // a discarded copy cannot repair a picture + (packet(.audio, 12), true, false, false), + (packet(.video, 12), false, false, true), + (packet(.video, 12), false, false, true) + ]) + XCTAssertEqual(summary.damaged, 2) + XCTAssertEqual(summary.replaced, 1) + XCTAssertEqual(summary.unreplaced, 1) + XCTAssertEqual(summary.retained, 2) + XCTAssertEqual(summary.keyframes, 1) + } + + func testUntimedDamageCannotCompleteReplayUsingOneMatchPerTrack() { + var guard_ = LivePacketReplayGuard() + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, 0), sourceSeconds: 0) + } + _ = guard_.inspect(packet(.video, 0), sourceSeconds: 0, timeBaseSeconds: 1, + videoFrontier: 40, audioFrontier: 40) + guard_.noteDamagedPacket() + _ = guard_.inspect(packet(.audio, 0), sourceSeconds: 0, timeBaseSeconds: 1, + videoFrontier: 40, audioFrontier: 40) + _ = guard_.inspect(packet(.video, 41), sourceSeconds: 41, timeBaseSeconds: 1, + videoFrontier: 40, audioFrontier: 40) + let result = guard_.inspect(packet(.audio, 41), sourceSeconds: 41, timeBaseSeconds: 1, + videoFrontier: 40, audioFrontier: 40) + XCTAssertEqual(result.event, .mismatch(videoPackets: 1, audioPackets: 1)) + XCTAssertNil(guard_.confirmedPrefix) + } + + func testDamagedFirstPacketOfEitherTrackWaitsForLaterExactEvidence() { + for leading in [LivePacketReplayGuard.Stream.video, .audio] { + let trailing: LivePacketReplayGuard.Stream = leading == .video ? .audio : .video + var guard_ = LivePacketReplayGuard() + for tick in 0..<600 { + for stream in [leading, trailing] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25) + } + } + for tick in 0..<3 { + _ = guard_.inspect(packet(leading, Int64(tick)), sourceSeconds: Double(tick) / 25, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + } + let first = guard_.inspect(packet(trailing, 0, payload: 0xFF), sourceSeconds: 0, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + XCTAssertEqual(first.event, .quarantined) + XCTAssertTrue(first.drop) + XCTAssertNil(guard_.confirmedPrefix, "one track cannot establish a paired replay") + for tick in 1...600 { + for stream in [leading, trailing] { + if stream == leading && tick < 3 { continue } + let result = guard_.inspect(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + XCTAssertEqual(result.drop, tick < 600) + if tick == 600 && stream == trailing { + guard case .finished = result.event else { return XCTFail("must reach unique media") } + } + } + } + } + } + + func testLeadingUnmatchedTrackRemainsBoundedAndCannotCommitWithoutMatching() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25) + } + } + _ = guard_.inspect(packet(.video, 0), sourceSeconds: 0, + timeBaseSeconds: 0.04, videoFrontier: 39, audioFrontier: 39) + for tick in 0...12 { + let result = guard_.inspect(packet(.audio, Int64(tick), payload: 0xFF), + sourceSeconds: Double(tick) / 25, timeBaseSeconds: 0.04, + videoFrontier: 39, audioFrontier: 39) + XCTAssertTrue(result.drop) + } + var frontier = guard_ + _ = frontier.inspect(packet(.video, 40), sourceSeconds: 1.6, + timeBaseSeconds: 0.04, videoFrontier: 39, audioFrontier: 39) + let incomplete = frontier.inspect(packet(.audio, 40), sourceSeconds: 1.6, + timeBaseSeconds: 0.04, videoFrontier: 39, audioFrontier: 39) + XCTAssertEqual(incomplete.event, .mismatch(videoPackets: 1, audioPackets: 0)) + let bounded = guard_.inspect(packet(.audio, 13, payload: 0xFF), sourceSeconds: 0.52, + timeBaseSeconds: 0.04, videoFrontier: 39, audioFrontier: 39) + XCTAssertEqual(bounded.event, .mismatch(videoPackets: 1, audioPackets: 0)) + XCTAssertNil(guard_.confirmedPrefix) + } + + func testShortDamagedPacketAfterThreeVideoAndOneAudioMatchesDoesNotReleaseReplay() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<600 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25) + } + } + for tick in 0..<3 { + _ = guard_.inspect(packet(.video, Int64(tick)), sourceSeconds: Double(tick) / 25, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + } + _ = guard_.inspect(packet(.audio, 0), sourceSeconds: 0, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + let damaged = guard_.inspect(packet(.video, 3, payload: 0xFF), sourceSeconds: 0.12, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + XCTAssertTrue(damaged.drop) + XCTAssertEqual(damaged.event, .quarantined, "the tvOS trace used to flush the whole old interval here") + for tick in 1..<601 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + if stream == .video && tick < 4 { continue } + let result = guard_.inspect(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25, + timeBaseSeconds: 0.04, videoFrontier: 599, audioFrontier: 599) + XCTAssertEqual(result.drop, tick < 600) + if tick == 600 && stream == .audio { + guard case .finished = result.event else { return XCTFail("must reach new media") } + } + } + } + XCTAssertFalse(guard_.isDroppingReplay) + } + + func testDamagedFrontierPacketDoesNotRequireOpeningTheSameReplayAgain() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<600 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick) / 25) + } + } + for tick in 0..<601 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + let result = guard_.inspect(packet(stream, Int64(tick), payload: tick == 599 ? 0xFF : nil), + sourceSeconds: Double(tick) / 25, timeBaseSeconds: 0.04, + videoFrontier: 599, audioFrontier: 599) + XCTAssertEqual(result.drop, tick < 600) + if tick < 600 { XCTAssertFalse(result.event == .interrupted(videoPackets: 599, audioPackets: 599)) } + } + } + XCTAssertFalse(guard_.isDroppingReplay) + } + func testFreshProducerContinuationRecognizesShortCachedOverlap() { + var original = LivePacketReplayGuard() + for tick in 0..<40 { + original.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + original.record(packet(.audio, Int64(tick)), sourceSeconds: Double(tick)) + } + var continuation = original.sourceContinuation() + original.reset() // the retired producer can free its own state independently + for tick in 37..<39 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + let decision = continuation.inspect(packet(stream, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39, hasAudio: true) + XCTAssertTrue(decision.drop, "cached media must not be appended again after a fresh connection") + } + } + XCTAssertNotNil(continuation.confirmedPrefix) + let divergence = continuation.inspect(packet(.video, 39, payload: 0xFF), sourceSeconds: 39, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39, hasAudio: true) + XCTAssertEqual(divergence.event, .interrupted(videoPackets: 2, audioPackets: 2)) + } + + func testContinuationResetAllowsIntentionalSeekAndDifferentContent() { + var original = LivePacketReplayGuard() + for tick in 0..<40 { original.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) } + var continuation = original.sourceContinuation() + let newContent = continuation.inspect(packet(.video, 20, payload: 0xFF), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: .min) + XCTAssertTrue(newContent.drop, "a timestamp-only match is provisional") + let divergent = continuation.inspect(packet(.video, 21, payload: 0xFF), sourceSeconds: 21, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: .min) + XCTAssertEqual(divergent.event, .mismatch(videoPackets: 0, audioPackets: 0)) + XCTAssertNil(continuation.confirmedPrefix) + continuation.reset() + let seekReplay = continuation.inspect(packet(.video, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: .min) + XCTAssertFalse(seekReplay.drop) + XCTAssertNil(seekReplay.event) + } + + private func packet(_ stream: LivePacketReplayGuard.Stream, _ tick: Int64, + payload: UInt8? = nil) -> LivePacketReplayGuard.Signature { + .init(stream: stream, dts: tick, pts: tick, + payload: Data([payload ?? UInt8(truncatingIfNeeded: tick), 0xA5])) + } + + func testExactVideoAndAudioReplayResumesAtFirstNewPackets() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + guard_.record(packet(.audio, Int64(tick)), sourceSeconds: Double(tick)) + } + + for tick in 20..<40 { + let video = guard_.inspect(packet(.video, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertTrue(video.drop) + if tick == 20 { XCTAssertEqual(video.event, .began) } + let audio = guard_.inspect(packet(.audio, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertTrue(audio.drop) + } + + let newVideo = guard_.inspect(packet(.video, 40), sourceSeconds: 40, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertFalse(newVideo.drop) + XCTAssertNil(newVideo.event) + let newAudio = guard_.inspect(packet(.audio, 40), sourceSeconds: 40, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertFalse(newAudio.drop) + XCTAssertEqual(newAudio.event, .finished(videoPackets: 20, audioPackets: 20, + videoSeconds: 19)) + XCTAssertFalse(guard_.isDroppingReplay) + } + + func testClockResetWithNewContentRollsBackItsProvisionalCandidate() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + } + let result = guard_.inspect(packet(.video, 20, payload: 0xFF), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, + audioFrontier: Int64.min) + XCTAssertTrue(result.drop) + XCTAssertEqual(result.event, .quarantined) + XCTAssertNil(guard_.confirmedPrefix) + let next = guard_.inspect(packet(.video, 21, payload: 0xFF), sourceSeconds: 21, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: .min) + XCTAssertEqual(next.event, .mismatch(videoPackets: 0, audioPackets: 0)) + XCTAssertFalse(guard_.isDroppingReplay, "the producer must forward the entire candidate") + } + + func testAudioCanReachTheOverlapBeforeVideo() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + guard_.record(packet(.audio, Int64(tick)), sourceSeconds: Double(tick)) + } + let firstAudio = guard_.inspect(packet(.audio, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertTrue(firstAudio.drop) + XCTAssertEqual(firstAudio.event, .began) + XCTAssertTrue(guard_.inspect(packet(.video, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, + audioFrontier: 39).drop) + } + + func testFirstDifferentPacketInsideReplayIsForwarded() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + } + XCTAssertTrue(guard_.inspect(packet(.video, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, + audioFrontier: Int64.min).drop) + let different = guard_.inspect(packet(.video, 21, payload: 0xFF), sourceSeconds: 21, + timeBaseSeconds: 1, videoFrontier: 39, + audioFrontier: Int64.min) + XCTAssertFalse(different.drop) + XCTAssertEqual(different.event, .mismatch(videoPackets: 1, audioPackets: 0)) + } + + func testOldHistoryCannotSuppressNewContent() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<100 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + } + let old = guard_.inspect(packet(.video, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 99, + audioFrontier: Int64.min) + XCTAssertFalse(old.drop) + } + + func testLongPairedOverlapRequiresFreshSourceWhenEitherTrackDiverges() { + for changedStream in [LivePacketReplayGuard.Stream.video, .audio] { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick)) + } + } + for tick in 20..<24 { + for stream in [LivePacketReplayGuard.Stream.audio, .video] { + XCTAssertTrue(guard_.inspect(packet(stream, Int64(tick)), + sourceSeconds: Double(tick), timeBaseSeconds: 1, + videoFrontier: 39, audioFrontier: 39).drop) + } + } + let changed = guard_.inspect(packet(changedStream, 24, payload: 0xFF), + sourceSeconds: 24, timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertFalse(changed.drop, "different media is not classified as a duplicate") + XCTAssertEqual(changed.event, .interrupted(videoPackets: 4, audioPackets: 4)) + XCTAssertNotNil(guard_.confirmedPrefix, "producer must stop rather than remux the prefix") + } + } + + func testOneMatchingTrackCannotConfirmAProgrammeBoundary() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick)) + } + } + for tick in 20..<24 { + _ = guard_.inspect(packet(.video, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + } + _ = guard_.inspect(packet(.audio, 20), sourceSeconds: 20, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertNil(guard_.confirmedPrefix) + let changed = guard_.inspect(packet(.audio, 21, payload: 0xFF), sourceSeconds: 21, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertEqual(changed.event, .mismatch(videoPackets: 4, audioPackets: 1)) + XCTAssertFalse(guard_.isDroppingReplay) + } + + func testNestedRollbackDoesNotEraseAlreadyConfirmedOverlap() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + } + for tick in [20, 21, 22, 23, 20] { + _ = guard_.inspect(packet(.video, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: Int64.min) + } + XCTAssertNotNil(guard_.confirmedPrefix) + let changed = guard_.inspect(packet(.video, 21, payload: 0xFF), sourceSeconds: 21, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: Int64.min) + XCTAssertEqual(changed.event, .interrupted(videoPackets: 5, audioPackets: 0)) + guard_.reset() + XCTAssertNil(guard_.confirmedPrefix) + XCTAssertFalse(guard_.isDroppingReplay) + } + + func testSubthresholdPairedMatchesRemainAmbiguous() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + guard_.record(packet(stream, Int64(tick)), sourceSeconds: Double(tick)) + } + } + for tick in 20..<22 { + for stream in [LivePacketReplayGuard.Stream.video, .audio] { + _ = guard_.inspect(packet(stream, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + } + } + XCTAssertNil(guard_.confirmedPrefix) + let changed = guard_.inspect(packet(.video, 22, payload: 0xFF), sourceSeconds: 22, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: 39) + XCTAssertEqual(changed.event, .mismatch(videoPackets: 2, audioPackets: 2)) + } + + func testSustainedThirtyFPSAndAACOverlapCannotRollbackAfterDivergence() { + var guard_ = LivePacketReplayGuard() + for frame in 0..<1_350 { + guard_.record(packet(.video, Int64(frame * 3_000)), sourceSeconds: Double(frame) / 30) + } + for frame in 0..<2_110 { + guard_.record(packet(.audio, Int64(frame * 1_024)), + sourceSeconds: Double(frame * 1_024) / 48_000) + } + var replay: [(LivePacketReplayGuard.Signature, Double, Double)] = [] + for frame in 300..<(300 + 738) { + replay.append((packet(.video, Int64(frame * 3_000)), Double(frame) / 30, 1 / 90_000)) + } + for frame in 469..<(469 + 1_147) { + replay.append((packet(.audio, Int64(frame * 1_024)), + Double(frame * 1_024) / 48_000, 1 / 48_000)) + } + replay.sort { $0.1 < $1.1 } + for (signature, seconds, timeBase) in replay { + XCTAssertTrue(guard_.inspect(signature, sourceSeconds: seconds, + timeBaseSeconds: timeBase, videoFrontier: 1_349 * 3_000, + audioFrontier: 2_109 * 1_024).drop) + } + // One changed AAC packet can be a damaged PES boundary. Sustained different audio + // beyond the bounded quarantine still requires fresh negotiation. + let changed = guard_.inspect(packet(.audio, 1_650 * 1_024, payload: 0xFF), + sourceSeconds: Double(1_650 * 1_024) / 48_000, timeBaseSeconds: 1 / 48_000, + videoFrontier: 1_349 * 3_000, audioFrontier: 2_109 * 1_024) + XCTAssertEqual(changed.event, .interrupted(videoPackets: 738, audioPackets: 1_147)) + XCTAssertFalse(changed.drop) + XCTAssertNotNil(guard_.confirmedPrefix) + } + + func testConfiguredAudioWithoutAcceptedHistoryCannotVerifyAReplay() { + var guard_ = LivePacketReplayGuard() + for tick in 0..<40 { + guard_.record(packet(.video, Int64(tick)), sourceSeconds: Double(tick)) + } + for tick in 20..<24 { + _ = guard_.inspect(packet(.video, Int64(tick)), sourceSeconds: Double(tick), + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: Int64.min, hasAudio: true) + } + XCTAssertNil(guard_.confirmedPrefix, "configured audio has supplied no evidence yet") + let firstAudio = guard_.inspect(packet(.audio, 24), sourceSeconds: 24, + timeBaseSeconds: 1, videoFrontier: 39, audioFrontier: Int64.min, hasAudio: true) + XCTAssertEqual(firstAudio.event, .mismatch(videoPackets: 4, audioPackets: 0)) + XCTAssertFalse(firstAudio.drop, "the new audio remains on the ordinary programme-boundary path") + XCTAssertFalse(guard_.isDroppingReplay) + } +} diff --git a/Tests/AetherEngineTests/LivePlaylistRenewalTests.swift b/Tests/AetherEngineTests/LivePlaylistRenewalTests.swift new file mode 100644 index 000000000..f3c1cd661 --- /dev/null +++ b/Tests/AetherEngineTests/LivePlaylistRenewalTests.swift @@ -0,0 +1,132 @@ +import Foundation +import Testing +@testable import AetherEngine + +struct LivePlaylistRenewalTests { + private func makeProvider() -> (VideoSegmentProvider, SegmentCache) { + let cache = SegmentCache(forwardWindow: 32, backwardWindow: 32) + let provider = VideoSegmentProvider(cache: cache, segments: [], codecsString: "avc1.64002A", + supplementalCodecs: nil, resolution: (1920, 1080), videoRange: .sdr, + frameRate: 30, hdcpLevel: nil, sourceBitrate: 4_000_000, isLive: true, + liveWindowSizing: LiveWindowSizing(targetSegmentDurationSeconds: 0.5, dvrWindowSeconds: nil)) + return (provider, cache) + } + + private func target(_ playlist: String) -> Int? { + playlist.split(separator: "\n").first { $0.hasPrefix("#EXT-X-TARGETDURATION:") } + .flatMap { Int($0.dropFirst("#EXT-X-TARGETDURATION:".count)) } + } + + @Test("long GOP renews the playlist while old video and subtitle URLs remain valid") + func longGOP() throws { + let (provider, cache) = makeProvider() + defer { cache.close() } + provider.appendLiveSegment(index: 0, startSeconds: 0, durationSeconds: 2.8) + provider.appendLiveSegment(index: 1, startSeconds: 2.8, durationSeconds: 1.466) + let original = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0) + #expect(target(original) == 4) + #expect(provider.livePlaylistGeneration == 0) + provider.appendLiveSegment(index: 2, startSeconds: 4.266, durationSeconds: 8.333) + #expect(provider.livePlaylistGeneration == 1) + let retired = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0) + #expect(target(retired) == 4) + #expect(!retired.contains("seg2.mp4")) + #expect(retired.contains("#EXT-X-ENDLIST")) + #expect(retired.contains("seg1.mp4")) + let fresh = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 1) + #expect(try #require(target(fresh)) >= 8) + #expect(fresh.contains("#EXTINF:8.333,")) + #expect(fresh.contains("seg0.mp4")) // Same retained timeline, not a source reload. + let oldSubs = HLSLocalServer.buildSubtitleMediaPlaylistText(ordinal: 0, provider: provider, generation: 0) + #expect(target(oldSubs) == 4) + #expect(!oldSubs.contains("subs_0_2.vtt")) + let newSubs = HLSLocalServer.buildSubtitleMediaPlaylistText(ordinal: 0, provider: provider, generation: 1) + #expect(target(newSubs) == target(fresh)) + #expect(newSubs.contains("subs_0_2.vtt")) + provider.appendLiveSegment(index: 3, startSeconds: 12.599, durationSeconds: 2) + #expect(provider.livePlaylistGeneration == 1) + let stillRetired = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0) + #expect(target(stillRetired) == 4) + #expect(provider.livePlaylistEndIndex(generation: 0) == 2) + #expect(!stillRetired.contains("seg3.mp4")) + #expect(provider.livePlaylistEndIndex(generation: 1) == nil) + } + + @Test("a renewed playlist can leave an outage while the retired URL stays closed") + func renewalAfterOutage() { + let (provider, cache) = makeProvider() + defer { cache.close() } + for index in 0..<6 { + provider.appendLiveSegment(index: index, startSeconds: Double(index) * 2.8, durationSeconds: 2.8) + } + _ = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0) + cache.declareTarget(4) + provider.consumerBufferedSecondsProvider = { 0 } + provider.backdateLastLiveSegmentFinalizeForTesting(bySeconds: 30) + #expect(provider.liveOutageEndlist) + provider.appendLiveSegment(index: 6, startSeconds: 16.8, durationSeconds: 8.333) + provider.clearLiveOutageEndlist() + #expect(!provider.liveOutageEndlistLatched) + #expect(HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0).contains("#EXT-X-ENDLIST")) + #expect(!HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 1).contains("#EXT-X-ENDLIST")) + } + + @Test("HTTP clients can finish the old playlist and mount the renewed master", .timeLimit(.minutes(1))) + func httpRenewal() async throws { + let (provider, cache) = makeProvider() + defer { cache.close() } + for index in 0..<6 { + provider.appendLiveSegment(index: index, startSeconds: Double(index) * 2.8, durationSeconds: 2.8) + } + _ = HLSLocalServer.buildMediaPlaylistText(provider: provider, generation: 0) + let server = HLSLocalServer(provider: provider) + try server.start() + defer { server.stop() } + let original = try #require(server.mediaPlaylistURL) + let client = URLSession(configuration: .ephemeral) + defer { client.invalidateAndCancel() } + _ = try await client.data(from: original) + provider.appendLiveSegment(index: 6, startSeconds: 16.8, durationSeconds: 8.333) + let renewed = try #require(server.mediaPlaylistURL) + #expect(original != renewed) + #expect(server.renewedLivePlaylistURL(replacing: original) == renewed) + var lan = URLComponents(url: original, resolvingAgainstBaseURL: false)! + lan.host = "192.0.2.1" + let lanURL = try #require(lan.url) + let renewedLAN = try #require(server.renewedLivePlaylistURL(replacing: lanURL)) + #expect(renewedLAN.host == "192.0.2.1") + #expect(renewedLAN.path == renewed.path) + let (oldData, oldResponse) = try await client.data(from: original) + #expect((oldResponse as? HTTPURLResponse)?.statusCode == 200) + let oldText = String(decoding: oldData, as: UTF8.self) + #expect(target(oldText) == 4) + #expect(!oldText.contains("seg6.mp4")) + let (newData, newResponse) = try await client.data(from: renewed) + #expect((newResponse as? HTTPURLResponse)?.statusCode == 200) + #expect(String(decoding: newData, as: UTF8.self).contains("seg6.mp4")) + let master = try #require(server.playlistURL) + let (masterData, _) = try await client.data(from: master) + #expect(String(decoding: masterData, as: UTF8.self).contains("media.m3u8")) + #expect(URL(string: "media.m3u8", relativeTo: master)?.absoluteURL == renewed) + } + + @Test("playlist renewal respects the serialized EXTINF rounding boundary") + func rounding() { + #expect(LiveTargetDurationSeal.accepts(1.2, target: 1)) + #expect(LiveTargetDurationSeal.accepts(1.4994, target: 1)) + #expect(!LiveTargetDurationSeal.accepts(1.4996, target: 1)) + #expect(!LiveTargetDurationSeal.accepts(.infinity, target: 4)) + } + + @Test("relative media, subtitle and segment routes retain their generation") + func routes() { + let paths = ["media.m3u8", "master.m3u8", "master_hdr.m3u8", "subs_0.m3u8", "seg12.mp4", "init.mp4"] + for path in paths { + let route = HLSLocalServer.livePlaylistRoute("/live-2/" + path) + #expect(route.path == "/" + path) + #expect(route.generation == 2) + } + #expect(HLSLocalServer.livePlaylistRoute("/media.m3u8").generation == 0) + #expect(HLSLocalServer.livePlaylistRoute("/live--1/media.m3u8").generation == 0) + } +} diff --git a/Tests/AetherEngineTests/LiveProductionHaltTests.swift b/Tests/AetherEngineTests/LiveProductionHaltTests.swift index ca74728f2..5f497df9f 100644 --- a/Tests/AetherEngineTests/LiveProductionHaltTests.swift +++ b/Tests/AetherEngineTests/LiveProductionHaltTests.swift @@ -56,7 +56,7 @@ final class LiveProductionHaltTests: XCTestCase { reason: .segmentStall, sourceReopenable: true), "cutter wedge exits to host retune; the provider will never cut again") XCTAssertTrue(HLSVideoEngine.shouldHaltLiveProduction( - reason: .sourceReplay, sourceReopenable: true)) + reason: .sourceReplay, sourceReopenable: false)) XCTAssertTrue(HLSVideoEngine.shouldHaltLiveProduction( reason: .eof, sourceReopenable: false), "host-provided custom-reader pump death delegates to host retune") @@ -65,6 +65,9 @@ final class LiveProductionHaltTests: XCTestCase { } func testRecoverableExitsDoNotHaltLiveProduction() { + XCTAssertFalse(HLSVideoEngine.shouldHaltLiveProduction( + reason: .sourceReplay, sourceReopenable: true), + "fresh source continues the retained cache and its exact-packet history") XCTAssertFalse(HLSVideoEngine.shouldHaltLiveProduction( reason: .eof, sourceReopenable: true), "reopenable exits (URL source, or #199 engine-created ingest reader with a fresh-reader factory) resume cutting into the same provider") @@ -148,13 +151,14 @@ final class LiveProductionHaltTests: XCTestCase { let released = expectation(description: "held blocking-reload waiter released") Thread.detachNewThread { // The reporter's shape: playlist ends at segment 11, AVPlayer holds ?_HLS_msn=12. - box.value = provider.waitForLiveSegment(index: 12, timeout: 10) + // A timeout out of reach, so only the halt can release it. + box.value = provider.waitForLiveSegment(index: 12, timeout: 600) released.fulfill() } while provider.parkedWaiterCount == 0 { usleep(200) } // the park, not a guess at it provider.markLiveProductionHalted() - wait(for: [released], timeout: 2.0) - XCTAssertFalse(box.value, "released waiter must report the segment as unavailable, well before its 10s timeout") + wait(for: [released], timeout: 300) + XCTAssertFalse(box.value, "released waiter must report the segment as unavailable, well before its own timeout") XCTAssertFalse(provider.liveBlockingReloadEnabled, "halted session must stop advertising CAN-BLOCK-RELOAD, beating the host override") } @@ -176,7 +180,7 @@ final class LiveProductionHaltTests: XCTestCase { semaphore.signal() } task.resume() - XCTAssertEqual(semaphore.wait(timeout: .now() + 5), .success, "request to \(url) timed out") + XCTAssertEqual(semaphore.wait(timeout: .now() + 120), .success, "request to \(url) timed out") if let error = box.error { throw error } return (box.status, box.body) } diff --git a/Tests/AetherEngineTests/LiveRecordingTeardownTests.swift b/Tests/AetherEngineTests/LiveRecordingTeardownTests.swift index cb85a7042..519fd0f3e 100644 --- a/Tests/AetherEngineTests/LiveRecordingTeardownTests.swift +++ b/Tests/AetherEngineTests/LiveRecordingTeardownTests.swift @@ -5,7 +5,7 @@ import Foundation /// Audit FEA-105 / FEA-106: a stop or a zap that lands while a recording is being torn down, or while /// a start is waiting for the previous file, must neither publish `.ended` early nor lose a failure, and /// a start that was overtaken must not install a writer afterwards. -@Suite("Live recording teardown and start races (FEA-105, FEA-106)", .serialized) +@Suite("Live recording teardown and start races (FEA-105, FEA-106)", .serialized, .timeLimit(.minutes(2))) @MainActor struct LiveRecordingTeardownTests { diff --git a/Tests/AetherEngineTests/LiveRecoveryPlaylistGrowthTests.swift b/Tests/AetherEngineTests/LiveRecoveryPlaylistGrowthTests.swift index b912569aa..37bca202c 100644 --- a/Tests/AetherEngineTests/LiveRecoveryPlaylistGrowthTests.swift +++ b/Tests/AetherEngineTests/LiveRecoveryPlaylistGrowthTests.swift @@ -14,6 +14,7 @@ struct LiveRecoveryPlaylistGrowthTests { private weak var _engine: HLSVideoEngine? private var _countAtFirstReopen: Int? private var _sourceResets = 0 + private var _allowNewMedia = false func watch(_ engine: HLSVideoEngine) { lock.withLock { _engine = engine } } @@ -28,6 +29,8 @@ struct LiveRecoveryPlaylistGrowthTests { var countAtFirstReopen: Int? { lock.withLock { _countAtFirstReopen } } var sourceResets: Int { lock.withLock { _sourceResets } } + var allowNewMedia: Bool { lock.withLock { _allowNewMedia } } + func admitNewMedia() { lock.withLock { _allowNewMedia = true } } } private static func openLiveDemuxer() throws -> Demuxer { @@ -37,6 +40,28 @@ struct LiveRecoveryPlaylistGrowthTests { return dem } + /// A fresh broadcast has new source timestamps; replaying the same fixture would + /// now correctly be rejected by the retained cache's exact-packet history. + private static func nextBroadcast() -> Data { + var bytes = TinyTransportStreamFixture.data + let pesHeader = Data([0, 0, 1, 0xE0, 0, 0, 0x80, 0x80, 5]) + var offset = 0 + while let range = bytes.range(of: pesHeader, in: offset..> 1) + let next = pts + 8 * 90_000 + bytes[p] = (bytes[p] & 0xF1) | UInt8((next >> 29) & 0x0E) + bytes[p + 1] = UInt8((next >> 22) & 0xFF) + bytes[p + 2] = UInt8((next >> 14) & 0xFE) | 1 + bytes[p + 3] = UInt8((next >> 7) & 0xFF) + bytes[p + 4] = UInt8((next << 1) & 0xFE) | 1 + offset = p + 5 + } + return bytes + } + @Test("segments a reopened live producer cuts reach the playlist", .timeLimit(.minutes(1))) func reopenedProducerGrowsThePlaylist() async throws { let observed = Observed() @@ -49,7 +74,7 @@ struct LiveRecoveryPlaylistGrowthTests { sourceReopenableByURL: false, customSourceReopenFactory: { observed.noteReopen() - return (reader: TinyTransportStreamFixture.LiveReader(), formatHint: "mpegts") + return (reader: TinyTransportStreamFixture.LiveReader(bytes: Self.nextBroadcast()), formatHint: "mpegts") }) observed.watch(engine) _ = try engine.start() @@ -63,6 +88,37 @@ struct LiveRecoveryPlaylistGrowthTests { try await waitFor { (engine.liveSegmentCountSnapshot ?? 0) > beforeLoss } } + @Test("an exhausted repeated source resumes into the same DVR when new media arrives", .timeLimit(.minutes(1))) + func parkedReplayRecoveryResumesWithoutAppendingOldMedia() async throws { + let observed = Observed() + let engine = HLSVideoEngine(url: URL(string: "aether-custom://source")!, + dvModeAvailable: false, isLiveSession: true, liveCutTargetSeconds: 1, + preopenedDemuxer: try Self.openLiveDemuxer(), sourceReopenableByURL: false, + customSourceReopenFactory: { + observed.noteReopen() + let bytes = observed.allowNewMedia ? Self.nextBroadcast() : TinyTransportStreamFixture.data + return (reader: TinyTransportStreamFixture.LiveReader(bytes: bytes), formatHint: "mpegts") + }) + observed.watch(engine) + engine.onLiveSourceReplayExhausted = { observed.noteSourceReset() } + _ = try engine.start() + defer { engine.stop() } + let cache = try #require(engine.cache) + let provider = try #require(engine.provider) + try await waitFor { observed.sourceResets > 0 } + let originalCount = try #require(observed.countAtFirstReopen) + #expect(engine.liveSegmentCountSnapshot == originalCount, + "every repeated source must leave the admitted timeline unchanged") + #expect(provider.liveProductionHalted) + observed.admitNewMedia() + #expect(engine.retryLiveSourceRecovery()) + #expect(engine.retryLiveSourceRecovery(), "duplicate host notification coalesces") + try await waitFor { (engine.liveSegmentCountSnapshot ?? 0) > originalCount } + #expect(engine.cache === cache) + #expect(engine.provider === provider) + #expect(!provider.liveProductionHalted) + } + @Test("a producer rebuilt in place reports into the same playlist", .timeLimit(.minutes(1))) func rebuiltProducerReportsIntoThePlaylist() async throws { let observed = Observed() diff --git a/Tests/AetherEngineTests/LiveReopenAfterTeardownTests.swift b/Tests/AetherEngineTests/LiveReopenAfterTeardownTests.swift index 7d9b6425d..b2754936f 100644 --- a/Tests/AetherEngineTests/LiveReopenAfterTeardownTests.swift +++ b/Tests/AetherEngineTests/LiveReopenAfterTeardownTests.swift @@ -34,14 +34,25 @@ struct LiveReopenAfterTeardownTests { private final class CountingReader: IOReader, @unchecked Sendable { private let lock = NSLock() private var _reads = 0 + private var _position = 0 + private var _cancels = 0 + var cancels: Int { lock.withLock { _cancels } } var reads: Int { lock.lock(); defer { lock.unlock() }; return _reads } func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { lock.lock(); _reads += 1; lock.unlock() - return 0 + guard let buffer else { return 0 } + return lock.withLock { + let bytes = TinyTransportStreamFixture.data + let count = min(Int(size), bytes.count - _position) + guard count > 0 else { return 0 } + bytes.withUnsafeBytes { _ = memcpy(buffer, $0.baseAddress! + _position, count) } + _position += count + return Int32(count) + } } func seek(offset: Int64, whence: Int32) -> Int64 { -1 } func close() {} - func cancel() {} + func cancel() { lock.withLock { _cancels += 1 } } func makeIndependentReader() -> IOReader? { nil } var discImageProbeEnabled: Bool { false } } @@ -56,4 +67,46 @@ struct LiveReopenAfterTeardownTests { } #expect(reader.reads == 0) } + @Test("source retirement cancels the old reader while preserving codec parameters") + func retirementReleasesOwnedReaderBeforeReplacement() throws { + let reader = CountingReader() + let demuxer = Demuxer() + try demuxer.open(reader: reader, formatHint: "mpegts", isLive: true) + let index = demuxer.videoStreamIndex + let stream = try #require(demuxer.stream(at: index)) + let video = HLSSegmentProducer.StreamConfig(codecpar: UnsafePointer(stream.pointee.codecpar), + timeBase: stream.pointee.time_base, codecTagOverride: "avc1") + let cache = SegmentCache(forwardWindow: 4, backwardWindow: 4) + let producer = try HLSSegmentProducer(demuxer: demuxer, videoStreamIndex: index, + video: video, cache: cache, videoFallbackDurationPts: 45_000, + desiredFirstVideoTfdtPts: 0, segmentBoundaries: [], isLive: true) + let engine = HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/live.ts"), + dvModeAvailable: false, isLiveSession: true) + engine.demuxer = demuxer + engine.producer = producer + engine.videoStreamIndex = index + engine.savedVideoConfig = video + defer { engine.stop(); cache.close() } + + #expect(reader.cancels == 0) + #expect(engine.retireLiveSourceConnection(failedProducer: producer)) + #expect(reader.cancels == 1, "the old owned source must release its connection before reopening") + #expect(demuxer.stream(at: index) != nil, "muxer configuration stays alive until the validated swap") + + let fresh = Demuxer() + defer { fresh.close() } + try fresh.open(reader: CountingReader(), formatHint: "mpegts", isLive: true) + #expect(engine.reopenedTrackLayoutMatches(fresh, failedProducer: producer)) + let freshStream = try #require(fresh.stream(at: fresh.videoStreamIndex)) + freshStream.pointee.time_base.den += 1 + #expect(!engine.reopenedTrackLayoutMatches(fresh, failedProducer: producer), + "a changed clock must be renegotiated, not spliced using saved muxer parameters") + freshStream.pointee.time_base = video.timeBase + freshStream.pointee.codecpar.pointee.codec_id = AV_CODEC_ID_HEVC + #expect(!engine.reopenedTrackLayoutMatches(fresh, failedProducer: producer)) + engine.producer = nil + #expect(!engine.retireLiveSourceConnection(failedProducer: producer)) + #expect(reader.cancels == 1, "a superseded callback must not retire another source") + } + } diff --git a/Tests/AetherEngineTests/LiveReplayPacketReaderTests.swift b/Tests/AetherEngineTests/LiveReplayPacketReaderTests.swift new file mode 100644 index 000000000..041de8476 --- /dev/null +++ b/Tests/AetherEngineTests/LiveReplayPacketReaderTests.swift @@ -0,0 +1,163 @@ +import Foundation +import Testing +import AetherLibavcodec +@testable import AetherEngine + +struct LiveReplayPacketReaderTests { + struct Sample { + var stream: Int32 + var time: Int64 + var byte: UInt8 = 1 + var corrupt = false + } + private func packets(_ range: Range, byte: UInt8 = 1) -> [Sample] { + range.flatMap { [Sample(stream: 0, time: $0, byte: byte), Sample(stream: 1, time: $0, byte: byte)] } + } + private func reader() -> LiveReplayPacketReader { + .init(videoIndex: 0, audioIndex: 1, videoTimeBase: 0.1, audioTimeBase: 0.1) + } + private func read(_ input: [Sample], reader: LiveReplayPacketReader) throws -> [Sample] { + var index = 0 + var result: [Sample] = [] + while let packet = try reader.read(from: { + guard index < input.count else { return nil } + let sample = input[index]; index += 1 + let packet = try #require(av_packet_alloc()) + #expect(av_new_packet(packet, 1) == 0) + packet.pointee.stream_index = sample.stream + packet.pointee.pts = sample.time; packet.pointee.dts = sample.time + packet.pointee.data[0] = sample.byte + if sample.corrupt { packet.pointee.flags |= AV_PKT_FLAG_CORRUPT } + return packet + }) { + result.append(.init(stream: packet.pointee.stream_index, time: packet.pointee.dts, + byte: packet.pointee.data[0])) + var owned: UnsafeMutablePointer? = packet + av_packet_free(&owned) + } + return result + } + + @Test("repeated source reconnects do not advance the software DVR timeline twice") + func repeatedReplay() throws { + let input = packets(0..<40) + packets(0..<60) + packets(20..<80) + let output = try read(input, reader: reader()) + #expect(output.map(\.time) == packets(0..<80).map(\.time)) + #expect(output.map(\.stream) == packets(0..<80).map(\.stream)) + } + + @Test("a final duplicate PES released after paired verification is still removed") + func duplicateAtCompletedSeam() throws { + let input = packets(0..<40) + packets(0..<41) + + [Sample(stream: 0, time: 40)] + packets(41..<60) + let output = try read(input, reader: reader()) + #expect(output.map(\.time) == packets(0..<60).map(\.time)) + } + + @Test("a new programme with reset timestamps keeps every packet") + func timestampResetIsNotReplay() throws { + let input = packets(0..<40) + packets(0..<50, byte: 2) + let output = try read(input, reader: reader()) + #expect(output.count == input.count) + #expect(output.map(\.byte) == input.map(\.byte)) + } + + @Test("timed corrupt audio beyond the old frontier stays out of a verified replay commit") + func damagedBoundary() throws { + let input = packets(0..<40) + + packets(0..<30) + + [Sample(stream: 1, time: 41, byte: 9, corrupt: true)] + + packets(30..<50) + let output = try read(input, reader: reader()) + #expect(!output.contains { $0.byte == 9 }) + #expect(output.count == packets(0..<50).count) + } + + @Test("a truncated last video PES is replaced by its intact returning copy") + func damagedFrontierBeforeReplay() throws { + let input = packets(0..<40) + + [Sample(stream: 0, time: 40, byte: 9, corrupt: true)] + + packets(0..<50) + let output = try read(input, reader: reader()) + #expect(output.map(\.time) == packets(0..<50).map(\.time)) + #expect(output.map(\.stream) == packets(0..<50).map(\.stream)) + #expect(output.allSatisfy { $0.byte == 1 }, "the damaged frontier must not poison the retained history") + } + + @Test("a flagged video packet followed by fresh media is preserved without proof of replay") + func ambiguousDamageKeepsFreshMedia() throws { + let input = packets(0..<40) + + [Sample(stream: 0, time: 40, byte: 9, corrupt: true)] + + packets(41..<50) + let output = try read(input, reader: reader()) + for stream: Int32 in [0, 1] { + #expect(output.filter { $0.stream == stream }.map(\.time) == input.filter { $0.stream == stream }.map(\.time)) + #expect(output.filter { $0.stream == stream }.map(\.byte) == input.filter { $0.stream == stream }.map(\.byte)) + } + } + + @Test("untimed fragments stay behind the damaged boundary until replay is proven", arguments: [false, true]) + func untimedOutgoingFragment(verified: Bool) throws { + let damaged = [Sample(stream: 0, time: 40, byte: 9, corrupt: true), + Sample(stream: 0, time: .min, byte: 8)] + let input = packets(0..<40) + damaged + packets(verified ? 0..<50 : 41..<50) + let output = try read(input, reader: reader()) + if verified { + #expect(output.map(\.time) == packets(0..<50).map(\.time)) + #expect(output.map(\.stream) == packets(0..<50).map(\.stream)) + #expect(output.allSatisfy { $0.byte == 1 }) + } else { + // No rollback proof: preserve every packet, including the untimed one. + #expect(output.count == input.count) + #expect(output.filter { $0.stream == 0 }.map(\.time) + == input.filter { $0.stream == 0 }.map(\.time)) + } + } + + @Test("an outgoing good picture arriving after audio rollback is kept once in decode order") + func outgoingPictureDuringDamagedBoundary() throws { + let input = packets(0..<40) + + [Sample(stream: 0, time: 40, byte: 9, corrupt: true), + Sample(stream: 1, time: 0), Sample(stream: 0, time: 41)] + + packets(0..<50) + let output = try read(input, reader: reader()) + #expect(output.filter { $0.stream == 0 }.map(\.time) == Array(0..<50).map(Int64.init)) + #expect(output.allSatisfy { $0.byte == 1 }) + } + + @Test("an outgoing good picture before rollback cannot release a damaged video boundary") + func outgoingPictureBeforeRollback() throws { + let input = packets(0..<40) + + [Sample(stream: 0, time: 40, byte: 9, corrupt: true), + Sample(stream: 0, time: 41)] + + packets(0..<50) + let output = try read(input, reader: reader()) + #expect(output.filter { $0.stream == 0 }.map(\.time) == Array(0..<50).map(Int64.init)) + #expect(output.allSatisfy { $0.byte == 1 }, "a clean outgoing straggler must not release the damaged frontier before rollback") + } + + @Test("an unverified damaged tail at EOF preserves the original media") + func damagedTailAtEOF() throws { + let input = packets(0..<40) + [Sample(stream: 0, time: 40, byte: 9, corrupt: true)] + let output = try read(input, reader: reader()) + #expect(output.map(\.time) == input.map(\.time)) + #expect(output.map(\.byte) == input.map(\.byte)) + } + + @Test("interrupted verified replay is never admitted as new media") + func interrupted() throws { + #expect(throws: LiveReplayPacketReader.Failure.self) { + try read(packets(0..<40) + packets(0..<30), reader: reader()) + } + } + + @Test("explicit positioning resets history, cancellation releases quarantine") + func resetAndCancel() throws { + let source = reader() + _ = try read(packets(0..<40), reader: source) + source.reset() + #expect(try read(packets(0..<20), reader: source).count == 40) + #expect(try source.read(isCurrent: { false }, from: { nil }) == nil) + #expect(try read(packets(0..<20), reader: source).count == 40) + } +} diff --git a/Tests/AetherEngineTests/LiveSourceReplayTests.swift b/Tests/AetherEngineTests/LiveSourceReplayTests.swift new file mode 100644 index 000000000..1f9487096 --- /dev/null +++ b/Tests/AetherEngineTests/LiveSourceReplayTests.swift @@ -0,0 +1,621 @@ +import Foundation +import CryptoKit +import AVFoundation +import VideoToolbox +import Testing +import AetherLibavutil +import AetherLibavcodec +@testable import AetherEngine + +@Suite("Live source replay", .serialized, .timeLimit(.minutes(1))) +struct LiveSourceReplayTests { + private final class Reader: IOReader, @unchecked Sendable { + private let bytes: Data + private let failAtEnd: Bool + private let lock = NSLock() + private var position = 0 + init(_ bytes: Data, failAtEnd: Bool = false) { + self.bytes = bytes + self.failAtEnd = failAtEnd + } + var consumedBytes: Int { lock.withLock { position } } + func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { + guard let buffer, size > 0 else { return -1 } + return lock.withLock { + let count = min(Int(size), bytes.count - position) + guard count > 0 else { return failAtEnd ? -1 : 0 } + bytes.withUnsafeBytes { _ = memcpy(buffer, $0.baseAddress! + position, count) } + position += count + return Int32(count) + } + } + func seek(offset: Int64, whence: Int32) -> Int64 { -1 } + func close() {} + var discImageProbeEnabled: Bool { false } + } + + private final class Result: @unchecked Sendable { + private let lock = NSLock() + private var exit: HLSSegmentProducer.PumpExitReason? + private var rebases = 0 + func finish(_ reason: HLSSegmentProducer.PumpExitReason) { lock.withLock { exit = reason } } + func rebase() { lock.withLock { rebases += 1 } } + var reason: HLSSegmentProducer.PumpExitReason? { lock.withLock { exit } } + var rebaseCount: Int { lock.withLock { rebases } } + } + + /// Split on TS packets carrying a video access-unit delimiter, retaining the original + /// compressed frames and source timestamps. Changing an AUD leaves the picture intact. + private func fixture(data: Data = TinyTransportStreamFixture.data, + divergenceFrame: Int = 5, + divergenceFrames: Int = 1, + headFrames: Int = 8, + replayStartFrame: Int = 0) throws -> (head: Data, tail: Data, + replay: Data, diverged: Data) { + let aud = Data([0, 0, 0, 1, 9]) + var offsets: [Int] = [] + var position = 0 + while let range = data.range(of: aud, in: position.. headFrames) + let seam = try #require(offsets.dropFirst(headFrames).first) / 188 * 188 + let head = Data(data[..= 0 && changedAUD < diverged.count { diverged[changedAUD] = 0xD0 } + } + return (head, Data(data[seam...]), replay, diverged) + } + + @discardableResult + private func run(_ bytes: Data, expected: String, expectedRebases: Int, + failAtEnd: Bool = false, mustLeaveUnreadBytes: Bool = false, + retainedCache: SegmentCache? = nil, + predecessor: HLSSegmentProducer? = nil) async throws -> HLSSegmentProducer { + let demuxer = Demuxer() + let reader = Reader(bytes, failAtEnd: failAtEnd) + try demuxer.open(reader: reader, formatHint: "mpegts") + let index = demuxer.videoStreamIndex + let stream = try #require(demuxer.stream(at: index)) + var audio: HLSSegmentProducer.AudioConfig? + if let stream = demuxer.stream(at: demuxer.audioStreamIndex) { + audio = .init(codecpar: UnsafePointer(stream.pointee.codecpar), + timeBase: stream.pointee.time_base, + sourceStreamIndex: demuxer.audioStreamIndex, + inputTimeBase: stream.pointee.time_base, + sourceTimeBase: stream.pointee.time_base, + bridge: nil, stripAacAdts: true) + } + let cache = retainedCache ?? SegmentCache(forwardWindow: 32, backwardWindow: 32) + let baseIndex = predecessor == nil ? 0 : cache.count + let producer = try HLSSegmentProducer( + demuxer: demuxer, videoStreamIndex: index, + video: .init(codecpar: UnsafePointer(stream.pointee.codecpar), + timeBase: stream.pointee.time_base, codecTagOverride: "avc1"), + audio: audio, cache: cache, baseIndex: baseIndex, targetSegmentDurationSeconds: 1, + videoFallbackDurationPts: 45_000, desiredFirstVideoTfdtPts: Int64(baseIndex) * 90_000, + segmentBoundaries: [], isLive: true, bufferAheadSegments: 32) + if let predecessor { producer.continueLiveReplayHistory(from: predecessor) } + let result = Result() + defer { + producer.stop() + // Cancellation may leave the pump unwinding; its demuxer/cache must stay alive. + if result.reason != nil, retainedCache == nil { cache.close() } + } + producer.onPumpFinished = { result.finish($0) } + producer.onLiveTimelineRebase = { _, _ in result.rebase() } + producer.onLiveSegmentFinalized = { _, _, _, _ in } + producer.start() + try await waitFor { result.reason != nil } + #expect(result.reason?.description == expected) + #expect(result.rebaseCount == expectedRebases, + "confirmed old media must never enter the discontinuity/mux path") + #expect(cache.count > 0, "the already-produced good media remains available") + if mustLeaveUnreadBytes { + #expect(reader.consumedBytes < bytes.count, "the packet bound fires before source EOF") + } + return producer + } + + private final class AdmissionGate: @unchecked Sendable { + private let lock = NSLock() + private var held = false + private var sawHold = false + private var reads = 0 + private var ended = false + private var stopped = false + func noteRead() { lock.withLock { reads += 1; if reads == 1 { held = true } } } + func mayRead() -> Bool { lock.withLock { if held { sawHold = true }; return !held } } + func release() { lock.withLock { held = false } } + func stop() { lock.withLock { stopped = true; held = false } } + func finish() { lock.withLock { ended = true } } + var blocked: Bool { lock.withLock { sawHold } } + var done: Bool { lock.withLock { ended } } + var shouldStop: Bool { lock.withLock { stopped } } + } + + @Test("software acquisition cannot evict a cursor while its recovery transition is held") + func readerHonoursDVRRecoveryHold() async throws { + let demuxer = Demuxer() + try demuxer.open(reader: Reader(TinyTransportStreamFixture.data), formatHint: "mpegts") + let video = demuxer.videoStreamIndex + let tb = try #require(demuxer.stream(at: video)).pointee.time_base + let directory = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString) + try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true) + let ring = try PacketRingBuffer(windowSeconds: 2, scratch: directory) + let condition = NSCondition() + let gate = AdmissionGate() + defer { gate.stop(); condition.withLock { condition.broadcast() } } + Thread.detachNewThread { + defer { demuxer.close(); gate.finish() } + SoftwarePlaybackHost.runLiveReaderLoop(demuxer: demuxer, + videoStreamIndex: video, audioStreamIndex: -1, condition: condition, ring: ring, + videoTimeBaseSeconds: Double(tb.num) / Double(tb.den), audioTimeBaseSeconds: 0, + noteEdge: { _ in gate.noteRead() }, readerMayAdvance: { gate.mayRead() }, + stopRequested: { gate.shouldStop }, onError: { _ in gate.stop() }, + onSourceEnded: {}) + } + try await waitFor { gate.blocked || gate.done } + #expect(gate.blocked) + #expect(ring.seqBounds.first == 0) + #expect(ring.seqBounds.end == 1) + gate.release(); condition.withLock { condition.broadcast() } + try await waitFor { gate.done } + #expect(ring.seqBounds.end > 1) + ring.close() + try? FileManager.default.removeItem(at: directory) + } + + @Test("software admission removes real H264/AAC replay before the DVR timeline") + func softwarePacketAdmission() throws { + let clip = try fixture(data: Self.audioVideoFixture(), headFrames: 12, replayStartFrame: 2) + func signatures(_ bytes: Data) throws -> [LivePacketReplayGuard.Signature] { + let demuxer = Demuxer() + try demuxer.open(reader: Reader(bytes), formatHint: "mpegts", isLive: true) + defer { demuxer.close() } + let video = demuxer.videoStreamIndex + let audio = demuxer.audioStreamIndex + let vt = try #require(demuxer.stream(at: video)).pointee.time_base + let at = try #require(demuxer.stream(at: audio)).pointee.time_base + let filter = LiveReplayPacketReader(videoIndex: video, audioIndex: audio, + videoTimeBase: Double(vt.num) / Double(vt.den), audioTimeBase: Double(at.num) / Double(at.den)) + var result: [LivePacketReplayGuard.Signature] = [] + while let packet = try filter.read(from: { try demuxer.readPacket() }) { + defer { var owned: UnsafeMutablePointer? = packet; av_packet_free(&owned) } + guard packet.pointee.stream_index == video || packet.pointee.stream_index == audio, + let data = packet.pointee.data, packet.pointee.size > 0 else { continue } + result.append(.init(stream: packet.pointee.stream_index == video ? .video : .audio, + dts: packet.pointee.dts, pts: packet.pointee.pts, + payload: UnsafeRawBufferPointer(start: data, count: Int(packet.pointee.size)))) + } + return result + } + let baseline = try signatures(clip.head + clip.tail) + let recovered = try signatures(clip.head + clip.replay + clip.tail) + // TS/PES interleaving can change at the seam; each decoder must still receive + // exactly its original compressed packets, in original per-track order. + for track in [LivePacketReplayGuard.Stream.video, .audio] { + #expect(recovered.filter { $0.stream == track } == baseline.filter { $0.stream == track }) + } + } + + @Test("fresh producers keep cached replay history through repeated source recoveries") + func freshProducerDoesNotAppendCachedPicturesAgain() async throws { + let clip = try fixture() + let cache = SegmentCache(forwardWindow: 32, backwardWindow: 32) + defer { cache.close() } + let first = try await run(clip.head + clip.diverged, expected: "sourceReplay", expectedRebases: 0, + retainedCache: cache) + let retainedSegments = cache.count + let second = try await run(clip.head + clip.tail, expected: "eof", expectedRebases: 0, + retainedCache: cache, predecessor: first) + let control = try await run(clip.head + clip.tail, expected: "eof", expectedRebases: 0) + #expect(first.packetsWrittenCount + second.packetsWrittenCount == control.packetsWrittenCount, + "every picture is admitted once, including intact tail packets held before source loss") + #expect(cache.count > retainedSegments) + let beforeThird = cache.count + let third = try await run(clip.head + clip.tail, expected: "sourceReplay", expectedRebases: 0, + retainedCache: cache, predecessor: second) + #expect(third.packetsWrittenCount == 0, + "a third fresh connection repeating the entire cached broadcast produces nothing") + #expect(cache.count == beforeThird, "previous DVR media is retained through repeated source loss") + } + + @Test("exact overlap continues without rebasing the output") + func exactOverlap() async throws { + let clip = try fixture() + try await run(clip.head + clip.head + clip.tail, expected: "eof", expectedRebases: 0) + } + + @Test("a damaged packet inside verified overlap does not replay or restart the source") + func divergentOverlapDoesNotReplayItsPrefix() async throws { + let clip = try fixture() + let result = try await run(clip.head + clip.diverged + clip.tail, + expected: "eof", expectedRebases: 0) + let control = try await run(clip.head + clip.tail, expected: "eof", expectedRebases: 0) + #expect(result.packetsWrittenCount == control.packetsWrittenCount) + } + + @Test("a source ending inside a long exact overlap never publishes that overlap") + func truncatedOverlapDoesNotReplayItsPrefix() async throws { + let clip = try fixture() + try await run(clip.head + clip.head, expected: "sourceReplay", expectedRebases: 0) + } + + @Test("a read failure inside a confirmed overlap requests a fresh source") + func failedOverlapDoesNotReplayItsPrefix() async throws { + let clip = try fixture() + try await run(clip.head + clip.head, expected: "sourceReplay", expectedRebases: 0, + failAtEnd: true) + } + + @Test("a repeated overlap exceeding the packet bound never forwards its old media") + func boundedOverlapDoesNotReplayItsPrefix() async throws { + let clip = try fixture() + var bytes = clip.head + for _ in 0..<2_000 { bytes.append(clip.head) } + try await run(bytes, expected: "sourceReplay", expectedRebases: 0, + mustLeaveUnreadBytes: true) + } + + @Test("a short ambiguous match preserves a genuine source clock reset") + func ambiguousOverlapKeepsNewMedia() async throws { + let clip = try fixture(divergenceFrame: 1, divergenceFrames: 7) + try await run(clip.head + clip.diverged + clip.tail, expected: "eof", expectedRebases: 1) + } + + @Test("paired H.264/AAC replay continues only after both tracks finish the overlap") + func pairedExactOverlap() async throws { + // Leading AAC before the initial video gate was never accepted into replay history. + // Replay the played A/V interval, not that unplayed join preroll. + let clip = try fixture(data: Self.audioVideoFixture(), headFrames: 12, replayStartFrame: 2) + try await run(clip.head + clip.replay + clip.tail, expected: "eof", expectedRebases: 0) + } + + @Test("paired H.264/AAC divergence does not replay video or rebase either track") + func pairedDivergentOverlap() async throws { + let clip = try fixture(data: Self.audioVideoFixture(), divergenceFrame: 9, + headFrames: 12, replayStartFrame: 2) + let result = try await run(clip.head + clip.diverged + clip.tail, + expected: "eof", expectedRebases: 0) + let control = try await run(clip.head + clip.tail, expected: "eof", expectedRebases: 0) + #expect(result.packetsWrittenCount == control.packetsWrittenCount) + } + + @Test("changed AAC at the first match or inside paired overlap continues without replay", arguments: [0, 150]) + func pairedAudioDivergence(packetIndex: Int) async throws { + let clip = try fixture(data: Self.audioVideoFixture(), headFrames: 12, replayStartFrame: 2) + var replay = clip.replay + let adts = Data([0xFF, 0xF1, 0x4C]) + var offsets: [Int] = [] + var position = 0 + while let range = replay.range(of: adts, in: position..> 8) + replay[lengthOffset + 1] = UInt8(length & 0xFF) // Truncated PES: one declared byte never arrives. + let capture = EngineLogCapture() + defer { capture.end() } + let result = try await run(clip.head + replay + clip.tail, expected: "eof", expectedRebases: 0) + let control = try await run(clip.head + clip.tail, expected: "eof", expectedRebases: 0) + #expect(result.packetsWrittenCount == control.packetsWrittenCount) + #expect(!capture.matching("live damaged packet: stream=audio action=held").isEmpty) + #expect(!capture.matching("live damaged packet: stream=audio action=discarded").isEmpty) + } + + @Test("paired replay interrupted by EOF or read failure never re-enters either timeline") + func pairedInterruptedOverlap() async throws { + let clip = try fixture(data: Self.audioVideoFixture(), headFrames: 12, replayStartFrame: 2) + for failAtEnd in [false, true] { + try await run(clip.head + clip.replay, expected: "sourceReplay", expectedRebases: 0, + failAtEnd: failAtEnd) + } + } + + + /// Decode the actual admitted/remuxed media, including delayed B-frames. Packet counts + /// alone cannot detect a lost reference picture or a broken fMP4 sample description. + private func decodedPictures(_ bytes: Data, format: String, filterReplay: Bool) throws -> [SHA256.Digest] { + let demuxer = Demuxer() + try demuxer.open(reader: Reader(bytes), formatHint: format) + defer { demuxer.close() } + let video = demuxer.videoStreamIndex + let stream = try #require(demuxer.stream(at: video)) + let codec = try #require(avcodec_find_decoder(stream.pointee.codecpar.pointee.codec_id)) + let context = try #require(avcodec_alloc_context3(codec)) + let frame = try #require(av_frame_alloc()) + defer { + var c: UnsafeMutablePointer? = context; avcodec_free_context(&c) + var f: UnsafeMutablePointer? = frame; av_frame_free(&f) + } + #expect(avcodec_parameters_to_context(context, stream.pointee.codecpar) >= 0) + #expect(avcodec_open2(context, codec, nil) >= 0) + let tb = stream.pointee.time_base + let audio = demuxer.audioStreamIndex + let at = try #require(demuxer.stream(at: audio)).pointee.time_base + let admission = LiveReplayPacketReader(videoIndex: video, audioIndex: audio, + videoTimeBase: Double(tb.num) / Double(tb.den), audioTimeBase: Double(at.num) / Double(at.den)) + var hashes: [SHA256.Digest] = [] + func drain() { + while avcodec_receive_frame(context, frame) >= 0 { + #expect(frame.pointee.decode_error_flags == 0) + #expect(frame.pointee.format == AV_PIX_FMT_YUV420P.rawValue) + var pixels = Data() + for (plane, stride, divisor) in [(frame.pointee.data.0, frame.pointee.linesize.0, 1), + (frame.pointee.data.1, frame.pointee.linesize.1, 2), + (frame.pointee.data.2, frame.pointee.linesize.2, 2)] { + guard let plane else { Issue.record("missing decoded plane"); continue } + for row in 0..<(Int(frame.pointee.height) / divisor) { + pixels.append(plane + row * Int(stride), count: Int(frame.pointee.width) / divisor) + } + } + hashes.append(SHA256.hash(data: pixels)) + av_frame_unref(frame) + } + } + while let packet = try (filterReplay ? admission.read(from: { try demuxer.readPacket() }) : demuxer.readPacket()) { + defer { var p: UnsafeMutablePointer? = packet; av_packet_free(&p) } + if packet.pointee.stream_index == video { + #expect(avcodec_send_packet(context, packet) >= 0) + drain() + } + } + #expect(avcodec_send_packet(context, nil) >= 0) + drain() + return hashes + } + + @Test("long GOP replay preserves every decoded picture on software and remux paths", arguments: [false, true]) + func longGOPDecodedContinuity(damaged: Bool) async throws { + let bytes = try LongGOPTransportStreamFixture.data() + let clip = try fixture(data: bytes, headFrames: 620, replayStartFrame: 120) + var head = clip.head + if damaged { + let aud = Data([0, 0, 0, 1, 9]) + let last = try #require(head.range(of: aud, options: .backwards)) + let previous = try #require(head.range(of: aud, options: .backwards, in: 0..= 3 ? 80 : 10))) + } + let expected = try decodedPictures(bytes, format: "mpegts", filterReplay: false) + #expect(expected.count == 800) + #expect(try decodedPictures(head + clip.replay + clip.tail, format: "mpegts", filterReplay: true) == expected) + var decoded: [[NativePicture]] = [] + for input in [bytes, head + clip.replay + clip.tail] { + let cache = SegmentCache(forwardWindow: 32, backwardWindow: 32) + defer { cache.close() } + _ = try await run(input, expected: "eof", expectedRebases: 0, retainedCache: cache) + var remuxed = try #require(cache.initData(versionID: 0)) + for index in 0.. [NativePicture] { + try lock.withLock { + guard failure == noErr else { throw NSError(domain: NSOSStatusErrorDomain, code: Int(failure)) } + return pictures.sorted { $0.ticks < $1.ticks } + } + } + } + + /// Decode the remuxed packet stream with Apple's VideoToolbox, not FFmpeg's decoder. + /// AVAssetReader treats a concatenated, unindexed HLS fragment file as its first fragment; + /// extracting compressed packets here avoids mistaking that file-container limit for lost video. + private func nativePictures(_ data: Data) async throws -> [NativePicture] { + let cancelled = ProbeTestBox(false) + return try await withTaskCancellationHandler { + try await withCheckedThrowingContinuation { continuation in + Thread.detachNewThread { + continuation.resume(with: Swift.Result { try Self.decodeNative(data, cancelled: cancelled) }) + } + } + } onCancel: { cancelled.update { $0 = true } } + } + + private static func decodeNative(_ data: Data, cancelled: ProbeTestBox) throws -> [NativePicture] { + func check(_ status: OSStatus) throws { + guard status == noErr else { throw NSError(domain: NSOSStatusErrorDomain, code: Int(status)) } + } + let demuxer = Demuxer() + try demuxer.open(reader: ProbeRecordingReader(data: data), formatHint: "mov") + defer { demuxer.close() } + let stream = try #require(demuxer.stream(at: demuxer.videoStreamIndex)) + let codec = try #require(stream.pointee.codecpar).pointee + let extra = try #require(codec.extradata) + let extensions: NSDictionary = [kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms: + ["avcC": Data(bytes: extra, count: Int(codec.extradata_size))]] + var description: CMVideoFormatDescription? + try check(CMVideoFormatDescriptionCreate(allocator: nil, codecType: kCMVideoCodecType_H264, + width: codec.width, height: codec.height, extensions: extensions, formatDescriptionOut: &description)) + let pictures = NativePictures() + var callback = VTDecompressionOutputCallbackRecord(decompressionOutputCallback: { context, _, status, _, pixel, pts, _ in + guard let context else { return } + Unmanaged.fromOpaque(context).takeUnretainedValue().record(status, pixel, pts) + }, decompressionOutputRefCon: Unmanaged.passUnretained(pictures).toOpaque()) + var decoder: VTDecompressionSession? + try check(VTDecompressionSessionCreate(allocator: nil, formatDescription: try #require(description), + decoderSpecification: nil, imageBufferAttributes: [kCVPixelBufferPixelFormatTypeKey: kCVPixelFormatType_32BGRA] as CFDictionary, + outputCallback: &callback, decompressionSessionOut: &decoder)) + let session = try #require(decoder) + defer { VTDecompressionSessionInvalidate(session) } + while let packet = try demuxer.readPacket() { + defer { var owned: UnsafeMutablePointer? = packet; av_packet_free(&owned) } + if cancelled.value { throw CancellationError() } + guard packet.pointee.stream_index == demuxer.videoStreamIndex else { continue } + let size = Int(packet.pointee.size) + var block: CMBlockBuffer? + try check(CMBlockBufferCreateWithMemoryBlock(allocator: nil, memoryBlock: nil, blockLength: size, + blockAllocator: nil, customBlockSource: nil, offsetToData: 0, dataLength: size, flags: 0, blockBufferOut: &block)) + let buffer = try #require(block) + try check(CMBlockBufferReplaceDataBytes(with: try #require(packet.pointee.data), blockBuffer: buffer, + offsetIntoDestination: 0, dataLength: size)) + let tb = stream.pointee.time_base + var timing = CMSampleTimingInfo(duration: SourceTimestampBounds.cmTime(ticks: packet.pointee.duration, timeBase: tb), + presentationTimeStamp: SourceTimestampBounds.cmTime(ticks: packet.pointee.pts, timeBase: tb), + decodeTimeStamp: SourceTimestampBounds.cmTime(ticks: packet.pointee.dts, timeBase: tb)) + var sampleSize = size + var sample: CMSampleBuffer? + try check(CMSampleBufferCreateReady(allocator: nil, dataBuffer: buffer, formatDescription: description, + sampleCount: 1, sampleTimingEntryCount: 1, sampleTimingArray: &timing, + sampleSizeEntryCount: 1, sampleSizeArray: &sampleSize, sampleBufferOut: &sample)) + try check(VTDecompressionSessionDecodeFrame(session, sampleBuffer: try #require(sample), flags: [], + frameRefcon: nil, infoFlagsOut: nil)) + } + try check(VTDecompressionSessionFinishDelayedFrames(session)) + try check(VTDecompressionSessionWaitForAsynchronousFrames(session)) + return try pictures.result() + } + + /// 8 s, 16x16 H.264 Baseline at 2 fps + AAC-LC stereo at 48 kHz, no B-frames. + /// Regenerate with the TinyTransportStreamFixture command plus + /// `-f lavfi -i anullsrc=r=48000:cl=stereo -t 8 -c:a aac -b:a 16k`, then raw DEFLATE. + private static func audioVideoFixture() throws -> Data { + let compressed = Data(base64Encoded: [ + "3VpbbBRVGD7TCxRIhW0pFSvxLLeWS3dnZi+0hSm7FLp9gKTGxCeTZXb2bHfs7s50ZkpbJc2CjeHBYEy8EIzBS/AZjInxwUhV", + "vCAieEEwxJQYMSZeSqJvJOt/FpJ2u0nrimH392xy5pw5Z2b/+c/3/9+cLxMJuVaQXdMbiDBJSE7IEeFWdmVfg7CotzdtsoEl", + "jzDrgK4xURo52HMuV1klEiIrCDlVn7edCNNk8+mat8pt1D8skX6wvepUc97262SatPBq+XV4Cu/ud18ut3nzlkiYiIv7CRk/", + "P879PkVINlvrJot/Vnl3yTSvB3adWfr9kwKsTzXJV6Gbax/nA8kLwksUjotqc7l91/b88t6Nq33vvLj1Cr267vc/RuWgn7ZT", + "zbAYlYIBavlkWaYxXyAoBlQY6PPABO++/j2Rdj8NP9oDM+NMg4EewxxLsYRDZVH0tcuiHICTSccxu7zekZERzwE9zoyUmvFE", + "BOIyrAEv/ydP0kmnYJ5hOrqRsbuopsZUTRGpxRKKROMsljK0QUXsgh9VM2pqzGa8R9NMiesqtYdj0BKpaY/BdKijVlyRPCJM", + "gYqm9VEWj/J78SuilpoZYIoUpFrSMtJqFC6VqGOxVEq3YUbHaEdcc6ChDaWhjjM1/oSRYYosbZUkmlBtJwq2N5j2oG7ChXdu", + "MmRGjUTCZvxCJ2nBRTYMpgxjUE1CJzpzzk5BGM+cEGnGyv+NpqdVh5uiZxxmpVSYBOdjqWFLHYtqRtpU80aBfxxL1TNwC5ho", + "qXxOwlLTjN9qhOkDSceE1iAbg2FFvtOIpvUMdGyNge2+MLlb5GWYNszNyZvAXWsxO8kXTFM0K0HTMfAnXxHoKAFYCTrEn0AR", + "PUFomtyY/FEdVYKd0LAdZip+qpuwOAABWDs/LPSQIpIsIJQdmeja2EaazkTCgiiE4MwZ8udtpF9Rczf3ZqtP3LpG9qoHtKDP", + "I3kkUSa7aN3k/R18THj/lntFzf5nHixzJyIIkn3Xfi+9/BdPAXnGfxySx+VT42V4ggXLrNS3rPfmTOoLH6cNJwEz8h3M/JSf", + "suQ7tZJwMV8HMOM7XH6P/zvMhIgL8TuBC/E7QcDuJ4Ln+Xsbq7OCsP7NQyW8f7Ajh6vbjr1K6M4sxKq/IFaXXcYUqwG0sRoW", + "ggV+r/8Wk9+34fU7CQKvCk+PVjqvuha5inm1owAzy7/BhJlOtJgJkQbEvNqAmFe3OcCrPzx2j2N1VhQ2stdKItaJ+16PZcmh", + "oxCrXQWx6voaU6xuRxurYdIB+b0qGKr0/N50VirO7zsKMNP4FSbMKHgxI3QX+L3pEia/70Tr9xBpRMyrjYh5tRP2q1VH15dt", + "v7p6/WRp+1Vh6cY2UkenZumRt2O1+SKmWJXQxmqYdHFevVFX6bzaMvHwQnrk6i8xYQavHjlXW2q5gMnveLWlEFmJmFdXIubV", + "7cCr1cqvZePVNT9eL227WpPXgZ/KFumRa77AFKuY9cgdwKvVL1ysdF519wwtpEc+dB4TZjDrkU2I83sT4vyu8Pz+29tly+/r", + "3hBK3Dc9wPdNrVNFeqT7c0yxiliPnKPprTuHye+INT3SDbxas+dYpfNqa9VzxbzaXfDN1YbPijFToR9gcT0S7TdXIbIKMa+u", + "QsyrO4FXa145WDZe3RRzl7hvSvJ904lskR7Z+imm/I5ZjxR5fv9rf6Xn9y2TpxfSIzd9ggkz/x89csvHmPyOWY9sRsyrzYh5", + "VQJerd23u2y86nWHS9yvbub7Ve9UkR7ZfhZTrGLWI2Xg1dqTbZXOq1L20kJ6pPcjTJjBq0fO1ZakDzH5HbW29Gyo3KYXljwK", + "1uZR4PtgHhT8DQ==", + ].joined())! + return try (compressed as NSData).decompressed(using: .zlib) as Data + } +} diff --git a/Tests/AetherEngineTests/LiveStartupAdmissionTests.swift b/Tests/AetherEngineTests/LiveStartupAdmissionTests.swift new file mode 100644 index 000000000..dc2d00c50 --- /dev/null +++ b/Tests/AetherEngineTests/LiveStartupAdmissionTests.swift @@ -0,0 +1,161 @@ +import Foundation +import Testing +@testable import AetherEngine + +@Suite(.timeLimit(.minutes(2)), .offCooperativePool) +struct LiveStartupAdmissionTests { + /// A parked job ends on an append or `cancelWaiters()`, never on its own deadline: past it the + /// gate takes the undersized-cushion exit and returns true, which a test task resumed late + /// read as an admission the policy never made (CI, 2026-10-08, with a 30 s deadline). + private static let parkedJobTimeout: TimeInterval = 86_400 + + private func provider(grace: Double? = nil, fast: Bool = true, singleSegmentMinimum: Double? = nil, holdbackFloor: Bool = false) -> (VideoSegmentProvider, SegmentCache) { + let cache = SegmentCache(forwardWindow: 10, backwardWindow: 10) + let provider = VideoSegmentProvider(cache: cache, segments: [], + codecsString: "avc1.640029,mp4a.40.2", supplementalCodecs: nil, + resolution: (1920, 1080), videoRange: .sdr, frameRate: 25, + hdcpLevel: nil, sourceBitrate: 4_000_000, isLive: true, + liveWindowSizing: .init(targetSegmentDurationSeconds: 0.5, dvrWindowSeconds: nil), + allowsBoundedDegradedStart: fast, startupGraceSeconds: grace, + singleSegmentStartupMinimumSeconds: singleSegmentMinimum, boundedStartFloorsAtHoldback: holdbackFloor, + firstServeLatchCoversEngineCut: true) + return (provider, cache) + } + + private func append(_ provider: VideoSegmentProvider, _ index: Int) { + provider.appendLiveSegment(index: index, startSeconds: Double(index * 10), durationSeconds: 10) + } + + @Test("A later plain playlist refresh does not pay the startup grace again") + func repeatedRequest() { + let (provider, cache) = provider() + defer { cache.close() } + append(provider, 0); append(provider, 1) + #expect(provider.waitForFirstLiveSegment(timeout: 5)) + let started = ContinuousClock.now + #expect(provider.waitForFirstLiveSegment(timeout: 5)) + #expect(started.duration(to: .now) < .seconds(0.5)) + #expect(provider.sealedLiveTargetDurationSeconds == 15) + provider.cancelWaiters() + #expect(!provider.waitForFirstLiveSegment(timeout: 5), "cancellation wins over admission") + } + + @Test("Zero grace admits two complete segments without weakening the advertised holdback") + func zeroGrace() { + let (provider, cache) = provider(grace: 0) + defer { cache.close() } + append(provider, 0); append(provider, 1) + let started = ContinuousClock.now + #expect(provider.waitForFirstLiveSegment(timeout: 5)) + #expect(started.duration(to: .now) < .seconds(0.5)) + #expect(provider.sealedLiveTargetDurationSeconds == 15) + #expect(HLSLocalServer.buildMediaPlaylistText(provider: provider).contains("HOLD-BACK=45.000")) + } + + @Test("An empty timed-out request does not latch admission") + func emptyWindow() { + let (provider, cache) = provider(grace: 0) + defer { cache.close() } + #expect(!provider.waitForFirstLiveSegment(timeout: 0)) + #expect(!provider.waitForFirstLiveSegment(timeout: 0)) + append(provider, 0); append(provider, 1) + #expect(provider.waitForFirstLiveSegment(timeout: 1)) + } + + @Test("Zero grace still waits for the second segment") + func minimumSegments() async throws { + let (provider, cache) = provider(grace: 0) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + append(provider, 1) + #expect(try await job.outcome().get()) + } + + @Test("A grace override never bypasses standard joins") + func standardJoin() async throws { + let (provider, cache) = provider(grace: 0, fast: false) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0); append(provider, 1) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + provider.cancelWaiters() + #expect(try await !job.outcome().get()) + } + + @Test("A caller may admit one sufficiently long completed segment without changing holdback") + func longSingleSegment() { + let (provider, cache) = provider(grace: 0, singleSegmentMinimum: 5) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let started = ContinuousClock.now + #expect(provider.waitForFirstLiveSegment(timeout: 5)) + #expect(started.duration(to: .now) < .seconds(0.5)) + #expect(provider.sealedLiveTargetDurationSeconds == 15) + #expect(HLSLocalServer.buildMediaPlaylistText(provider: provider).contains("HOLD-BACK=45.000")) + } + + @Test("A short first segment still waits, even when single-segment startup is enabled") + func shortSingleSegment() async throws { + let (provider, cache) = provider(grace: 0, singleSegmentMinimum: 5) + defer { provider.cancelWaiters(); cache.close() } + provider.appendLiveSegment(index: 0, startSeconds: 0, durationSeconds: 2) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + provider.appendLiveSegment(index: 1, startSeconds: 2, durationSeconds: 2) + #expect(try await job.outcome().get()) + } + + @Test("An invalid threshold keeps the two-segment default", arguments: [0.0, -1.0, .infinity, .nan]) + func invalidSingleSegmentThreshold(_ threshold: Double) async throws { + let (provider, cache) = provider(grace: 0, singleSegmentMinimum: threshold) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + provider.cancelWaiters() + #expect(try await !job.outcome().get()) + } + + @Test("A single-segment threshold does not bypass a standard join") + func standardIgnoresSingleSegmentThreshold() async throws { + let (provider, cache) = provider(grace: 0, fast: false, singleSegmentMinimum: 5) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + provider.cancelWaiters() + #expect(try await !job.outcome().get()) + } + + @Test("Single-segment admission still observes the configured grace") + func singleSegmentGrace() { + let (provider, cache) = provider(grace: 0.2, singleSegmentMinimum: 5) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let started = ContinuousClock.now + #expect(provider.waitForFirstLiveSegment(timeout: 5)) + #expect(started.duration(to: .now) >= .milliseconds(190)) + provider.cancelWaiters() + #expect(!provider.waitForFirstLiveSegment(timeout: 1)) + } + + @Test("Single-segment opt-in cannot bypass an explicit holdback floor") + func singleSegmentRespectsHoldbackFloor() async throws { + let (provider, cache) = provider(grace: 0, singleSegmentMinimum: 5, holdbackFloor: true) + defer { provider.cancelWaiters(); cache.close() } + append(provider, 0) + let job = ProbeTestJob { provider.waitForFirstLiveSegment(timeout: Self.parkedJobTimeout) } + try await waitFor { provider.parkedWaiterCount == 1 } + #expect(!(try await waitFor(upTo: .milliseconds(100)) { job.isFinished })) + provider.cancelWaiters() + #expect(try await !job.outcome().get()) + } + +} diff --git a/Tests/AetherEngineTests/LiveTimestampRollbackTests.swift b/Tests/AetherEngineTests/LiveTimestampRollbackTests.swift new file mode 100644 index 000000000..0ec26ca9f --- /dev/null +++ b/Tests/AetherEngineTests/LiveTimestampRollbackTests.swift @@ -0,0 +1,55 @@ +import Foundation +import Testing +@testable import AetherEngine + +@Suite("Live loopback timestamp rollback") +struct LiveTimestampRollbackTests { + @MainActor + @Test("a source PTS rollback cannot move the DVR rail or seek beyond the item edge") + func rollbackKeepsSessionAxis() throws { + let engine = try AetherEngine() + engine.isLive = true + engine.videoRoute = .loopback + engine.liveDisplayShiftSeconds = 67_310.539 + engine.playlistShiftSeconds = 67_310.539 + engine.nativeSeekableEndReading = { 40.24 } + engine.liveWindow = LiveWindow(windowSeconds: 1_800) + + engine.setPresentationAxis(.anchored(shiftSeconds: 67_310.539)) + engine.applyNativeHostClockTick(26.0) + let before = engine.currentTime + + var sourceAxis = engine.presentationAxis + sourceAxis.appendSeam(shiftSeconds: 67_293.099, activatingAtItemSeconds: 27.44) + engine.setPresentationAxis(sourceAxis) + engine.applyNativeHostClockTick(35.0) + + #expect(abs(engine.currentTime - (before + 9)) < 0.001) + #expect(abs(engine.liveWindow!.edgeTime - 67_350.779) < 0.001) + #expect(abs(engine.displaySeconds(forPlaylistSeconds: 35) - 67_345.539) < 0.001) + #expect(abs(engine.liveSessionSeekAxis.itemSeconds(forSourceSeconds: engine.currentTime)! - 35) < 0.001) + + let landing = AetherEngine.liveSeekLanding( + requested: engine.liveWindow!.edgeTime, + window: engine.liveWindow!, itemEnd: 40.24, + shift: engine.liveSessionShiftSeconds, + axis: engine.liveSessionSeekAxis) + // The source seam would invert this same edge to 57.68, beyond the item's 40.24 end. + #expect(abs(sourceAxis.itemSeconds(forSourceSeconds: engine.liveWindow!.edgeTime)! - 57.68) < 0.001) + #expect(abs(landing.clockTarget - 40.24) < 0.001) + #expect(landing.clockTarget <= 40.24) + } + @Test("A stale range admits played resident media but never a prefetched frontier") + func staleRangeUsesPlayedHistory() { + #expect(AetherEngine.nativePlayedResidentEdge(reportedEdge: 0, playedTime: 24, + publishedEdge: 20, residentRange: 10...100) == 24) + #expect(AetherEngine.nativePlayedResidentEdge(reportedEdge: 0, playedTime: 14, + publishedEdge: 24, residentRange: 10...100) == 24) + #expect(AetherEngine.nativePlayedResidentEdge(reportedEdge: 0, playedTime: 4, + publishedEdge: 4, residentRange: 10...100) == 10) + #expect(AetherEngine.nativePlayedResidentEdge(reportedEdge: 40, playedTime: 24, + publishedEdge: 20, residentRange: 10...100) == nil) + #expect(AetherEngine.nativePlayedResidentEdge(reportedEdge: 0, playedTime: .nan, + publishedEdge: 20, residentRange: 10...100) == nil) + } +} diff --git a/Tests/AetherEngineTests/LiveWindowBackpressureTests.swift b/Tests/AetherEngineTests/LiveWindowBackpressureTests.swift index 1e4ab0f77..24affc417 100644 --- a/Tests/AetherEngineTests/LiveWindowBackpressureTests.swift +++ b/Tests/AetherEngineTests/LiveWindowBackpressureTests.swift @@ -10,7 +10,7 @@ import Foundation /// into the cause of the next one, forever. The live threshold absorbs the burst ONCE; /// the end-and-refill stays as the memory backstop for a "live" source that sustainedly /// outruns realtime (a misdeclared VOD). These tests pin both halves. -@Suite("AVIOReader live window backpressure") +@Suite("AVIOReader live window backpressure", .offCooperativePool) struct LiveWindowBackpressureTests { @Test("a live join burst past the VOD high water keeps its one connection", @@ -34,20 +34,14 @@ struct LiveWindowBackpressureTests { // The origin must be able to FINISH its burst: on the 16 MB threshold the reader // cancelled the task mid-burst and the remaining bytes were never accepted. - let deadline = Date().addingTimeInterval(30) - while server.bytesWritten < burst && Date() < deadline { - try await Task.sleep(for: .milliseconds(50)) - } + try await waitFor { server.bytesWritten >= burst } #expect(server.bytesWritten >= burst, "origin only placed \(server.bytesWritten / (1024 * 1024)) MB of its \(burst / (1024 * 1024)) MB burst; the reader ended the connection") // Let the in-flight tail land in the window, then pin the live contract: the // burst is absorbed, the connection is NOT voluntarily ended, and no re-request // was ever issued. - let settle = Date().addingTimeInterval(10) - while reader.windowDiagnostics.aheadBytes < Int(burst) && Date() < settle { - try await Task.sleep(for: .milliseconds(50)) - } + try await waitFor { reader.windowDiagnostics.aheadBytes >= Int(burst) } let diag = reader.windowDiagnostics #expect(diag.aheadBytes >= Int(burst), "window holds \(diag.aheadBytes / (1024 * 1024)) MB of the burst") @@ -77,10 +71,7 @@ struct LiveWindowBackpressureTests { // A "live" origin outrunning realtime into a stalled consumer: the backstop must // end the connection (bounded memory, the #310 contract, unchanged for live). - let deadline = Date().addingTimeInterval(15) - while reader.hasLiveConnectionForTesting && Date() < deadline { - try await Task.sleep(for: .milliseconds(50)) - } + try await waitFor { !reader.hasLiveConnectionForTesting } #expect(!reader.hasLiveConnectionForTesting, "the live backstop must still end a connection that outruns the consumer") #expect(reader.windowDiagnostics.parked, @@ -96,8 +87,7 @@ struct LiveWindowBackpressureTests { let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } var got = 0 - let readDeadline = Date().addingTimeInterval(30) - while got < target && Date() < readDeadline { + while got < target { let n = reader.read(into: buf, size: Int32(sliceCap)) if n <= 0 { break } got += Int(n) @@ -145,8 +135,7 @@ struct LiveWindowBackpressureTests { let buf = UnsafeMutablePointer.allocate(capacity: sliceCap) defer { buf.deallocate() } var got = 0 - let deadline = Date().addingTimeInterval(30) - while got < target && Date() < deadline { + while got < target { let n = reader.read(into: buf, size: Int32(sliceCap)) if n <= 0 { break } got += Int(n) diff --git a/Tests/AetherEngineTests/LongGOPLiveStartupTests.swift b/Tests/AetherEngineTests/LongGOPLiveStartupTests.swift new file mode 100644 index 000000000..219275992 --- /dev/null +++ b/Tests/AetherEngineTests/LongGOPLiveStartupTests.swift @@ -0,0 +1,88 @@ +import AVFoundation +import Foundation +import Testing +@testable import AetherEngine + +/// Optional real-media witness. Generate 40 s H.264/AAC MPEG-TS fixtures with 5 s and 10 s closed GOPs +/// and a 700 kbit/s constant mux rate. Scripts/test-long-gop-startup.sh supplies the fixtures. +@Suite(.serialized, .timeLimit(.minutes(2))) +@MainActor +struct LongGOPLiveStartupTests { + private final class PacedReader: IOReader, @unchecked Sendable { + private let data: Data + private let condition = NSCondition() + private let started = ContinuousClock.now + private var cursor = 0 + private var closed = false + private let preroll: Double + init(data: Data, preroll: Double) { self.data = data; self.preroll = preroll } + var discImageProbeEnabled: Bool { false } + func read(_ buffer: UnsafeMutablePointer?, size: Int32) -> Int32 { + guard let buffer, size > 0 else { return 0 } + condition.lock() + defer { condition.unlock() } + while !closed { + let elapsed = started.duration(to: .now).components + let seconds = Double(elapsed.seconds) + Double(elapsed.attoseconds) / 1e18 + let frontier = min(data.count, Int((preroll + seconds) * 87_500)) + let count = min(Int(size), 188 * 7, frontier - cursor) + if count > 0 { + data.copyBytes(to: buffer, from: cursor..<(cursor + count)) + cursor += count + return Int32(count) + } + if cursor == data.count { return 0 } + condition.wait(until: Date(timeIntervalSinceNow: 0.01)) + } + return -1 + } + func seek(offset: Int64, whence: Int32) -> Int64 { -1 } + func close() { condition.withLock { closed = true; condition.broadcast() } } + func cancel() { close() } + func makeIndependentReader() -> IOReader? { nil } + } + + @Test("A fast join can consume a long finalized GOP before a second GOP is available", + .enabled(if: ProcessInfo.processInfo.environment["AETHER_LONG_GOP_FIXTURES"] != nil), + arguments: [5, 10]) + func longGOPNativeJoin(_ gopSeconds: Int) async throws { + let directory = try #require(ProcessInfo.processInfo.environment["AETHER_LONG_GOP_FIXTURES"]) + let path = URL(fileURLWithPath: directory).appendingPathComponent("gop-\(gopSeconds).ts") + let reader = PacedReader(data: try Data(contentsOf: path), preroll: Double(gopSeconds - 3)) + let engine = try AetherEngine() + let log = EngineLogCapture() + defer { engine.stop(); log.end() } + var options = LoadOptions(isLive: true, dvrWindowSeconds: 60, liveJoinProfile: .fastZap, + liveStartupGraceSeconds: 0, + liveStartupSingleSegmentMinimumSeconds: 5) + options.suppressDisplayCriteria = true + let start = ContinuousClock.now + try await engine.load(source: .custom(reader, formatHint: "mpegts"), options: options) + try await waitFor { engine.isSessionReady } + let joined = start.duration(to: .now) + print("LONG_GOP=\(gopSeconds) JOIN_SECONDS=\(joined)") + for line in log.matching("first live manifest") { print(line) } + #expect(joined < .seconds(7), "a second full GOP must not be required after a playable first GOP") + let seekable = try await waitFor(upTo: .seconds(2)) { + guard let range = engine.seekableLiveRange else { return false } + return range.upperBound - range.lowerBound >= 1 + } + #expect(seekable, "an advancing played frontier must not wait for a second long GOP") + print("LONG_GOP_SEEKABLE_SECONDS=\(start.duration(to: .now))") + let initial = engine.currentTime + try await waitFor { engine.currentTime - initial > 10 || engine.errorInfo != nil } + print("LONG_GOP_ADVANCE=\(engine.currentTime - initial) state=\(engine.state)") + #expect(engine.videoRoute == .loopback) + #expect(engine.currentTime - initial > 10) + #expect(engine.currentAVPlayer?.currentItem?.error == nil) + let beforeRewind = engine.currentTime + let range = try #require(engine.seekableLiveRange) + await engine.seek(to: max(range.lowerBound, beforeRewind - 3)) + #expect(engine.currentTime < beforeRewind - 1) + await engine.seekToLiveEdge(offsetSeconds: 5) + let afterReturn = engine.currentTime + try await waitFor { engine.currentTime > afterReturn + 1 || engine.errorInfo != nil } + #expect(engine.currentTime > afterReturn + 1) + #expect(engine.currentAVPlayer?.currentItem?.error == nil) + } +} diff --git a/Tests/AetherEngineTests/LostSourceReadErrorTests.swift b/Tests/AetherEngineTests/LostSourceReadErrorTests.swift index 20c380bb3..764e45199 100644 --- a/Tests/AetherEngineTests/LostSourceReadErrorTests.swift +++ b/Tests/AetherEngineTests/LostSourceReadErrorTests.swift @@ -4,14 +4,14 @@ import Foundation /// A source that is lost mid-read reports a read error, never end-of-file: the consumer treats EOF /// as "played to the end" and never retries it (audit DMX-6, DMX-10). -@Suite("Lost source reads report EIO") +@Suite("Lost source reads report EIO", .offCooperativePool) struct LostSourceReadErrorTests { /// Answers every request with a length-less 200 and every GET with `bodyBytes` of a body that /// never completes. The reader can resolve no size and runs the forward-only streaming path. private final class LengthlessResettingOrigin: @unchecked Sendable { let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let bodyBytes: Int private let lock = NSLock() private var stopped = false @@ -23,46 +23,20 @@ struct LostSourceReadErrorTests { init?(bodyBytes: Int) { self.bodyBytes = bodyBytes - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var addr = sockaddr_in() - addr.sin_family = sa_family_t(AF_INET) - addr.sin_port = 0 - addr.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &addr) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 16) == 0 else { Darwin.close(fd); return nil } - var name = sockaddr_in() - var len = socklen_t(MemoryLayout.size) - _ = withUnsafeMutablePointer(to: &name) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &len) } + guard let listener = LoopbackListener(backlog: 16) else { return nil } + self.listener = listener + port = listener.port + listener.start { [self] fd in + Thread.detachNewThread { [self] in serve(fd) } + return true } - listenFD = fd - port = UInt16(bigEndian: name.sin_port) - Thread.detachNewThread { [self] in acceptLoop() } } func stop() { lock.lock() stopped = true lock.unlock() - shutdown(listenFD, SHUT_RDWR) - Darwin.close(listenFD) - } - - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - guard fd >= 0 else { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - Thread.detachNewThread { [self] in serve(fd) } - } + listener.stop() } private func serve(_ fd: Int32) { diff --git a/Tests/AetherEngineTests/MATCarrierDownmixWarningTests.swift b/Tests/AetherEngineTests/MATCarrierDownmixWarningTests.swift new file mode 100644 index 000000000..1786384a6 --- /dev/null +++ b/Tests/AetherEngineTests/MATCarrierDownmixWarningTests.swift @@ -0,0 +1,31 @@ +import Testing +@testable import AetherEngine + +/// PR #740 device round: the surround-downmix warning read the route's current channel count, which +/// after an APAC session is the 2-channel MAT carrier tvOS keeps, and told a viewer hearing intact +/// 5.1 that it was downmixed. The sink's advertised maximum is what decides. +@Suite("The surround-downmix warning reads the sink's advertised maximum") +struct MATCarrierDownmixWarningTests { + + @Test("5.1 into a sink stuck advertising stereo is a downmix") + func stereoSinkWarns() { + #expect(NativeAVPlayerHost.surroundDownmixSuspected( + trackChannels: 6, routeChannels: 2, maximumRouteChannels: 2)) + } + + @Test("5.1 inside a MAT carrier on a 32-channel sink is not") + func matCarrierStaysQuiet() { + #expect(!NativeAVPlayerHost.surroundDownmixSuspected( + trackChannels: 6, routeChannels: 2, maximumRouteChannels: 32)) + } + + @Test("a route that already carries the track, a stereo track or an unread route never warn") + func nothingToWarnAbout() { + #expect(!NativeAVPlayerHost.surroundDownmixSuspected( + trackChannels: 6, routeChannels: 6, maximumRouteChannels: 6)) + #expect(!NativeAVPlayerHost.surroundDownmixSuspected( + trackChannels: 2, routeChannels: 2, maximumRouteChannels: 2)) + #expect(!NativeAVPlayerHost.surroundDownmixSuspected( + trackChannels: 6, routeChannels: 0, maximumRouteChannels: 0)) + } +} diff --git a/Tests/AetherEngineTests/MasterFallbackDecisionTests.swift b/Tests/AetherEngineTests/MasterFallbackDecisionTests.swift index 069769e4c..6d347afcf 100644 --- a/Tests/AetherEngineTests/MasterFallbackDecisionTests.swift +++ b/Tests/AetherEngineTests/MasterFallbackDecisionTests.swift @@ -3,6 +3,17 @@ import Testing @testable import AetherEngine struct MasterFallbackDecisionTests { + @Test("a malformed media playlist is not evidence of display incompatibility") + func malformedMedia() { + let parser = NSError(domain: "CoreMediaErrorDomain", code: -12642) + let wrapped = NSError(domain: "AVFoundationErrorDomain", code: -11848, + userInfo: [NSUnderlyingErrorKey: parser]) + #expect(!MasterFallbackDecision.isMasterRejection(wrapped)) + let generic = NSError(domain: "AVFoundationErrorDomain", code: -11848) + #expect(!MasterFallbackDecision.isMasterRejection(generic, mediaErrorCodes: [-12642])) + #expect(MasterFallbackDecision.isMasterRejection(generic)) + } + @Test("Display-rejection codes are the two AVFoundation display-reject codes") func recognisesRejectionCodes() { diff --git a/Tests/AetherEngineTests/MovencFragmentEndTests.swift b/Tests/AetherEngineTests/MovencFragmentEndTests.swift new file mode 100644 index 000000000..fa51184b9 --- /dev/null +++ b/Tests/AetherEngineTests/MovencFragmentEndTests.swift @@ -0,0 +1,144 @@ +import Testing +import Foundation +import AetherLibavformat +import AetherLibavcodec +import AetherLibavutil +@testable import AetherEngine + +/// StreamX crash 2026-10-10: `Assertion next_dts >= 0 failed at libavformat/movenc.c:1247`, abort on the +/// `HLSSegmentProducer.pump` thread inside `mov_flush_fragment`. movenc moves the first sample of a +/// fragment up to the previous fragment's declared end and `check_pkt` clamps every following sample +/// that still sits below it (`Packet duration ... out of range`), so the written DTS can run AHEAD of +/// the real ones. A flush that finds a packet still waiting in the interleaver takes that packet's REAL +/// DTS as the track end (`ff_interleaved_peek`), which is then behind the last written sample, and +/// `get_cluster_duration` aborts the process instead of returning an error. +@Suite("movenc: a fragment end behind a clamped sample does not abort") +struct MovencFragmentEndTests { + + /// Runs the shape in a child process: before the fix it is a SIGABRT, which would take the whole + /// test runner down with it. Exit tests exist on macOS only, not in the tvOS/iOS/visionOS simulators. + #if os(macOS) + @Test("finalize with a queued packet behind a clamped written sample") + func finalizeWithQueuedPacketBehindClampedSample() async { + await #expect(processExitsWith: .success) { + try MovencFragmentEndTests.runOvershootThenFinalize() + } + } + #endif + + // MARK: - Scenario + + static func runOvershootThenFinalize() throws { + let demuxer = Demuxer() + defer { demuxer.close() } + try demuxer.open( + reader: DataIOReader(data: Data( + base64Encoded: AtmosDetectionProbeIntegrationTests.videoOnlyBase64, + options: .ignoreUnknownCharacters) ?? Data()), + formatHint: "mp4" + ) + guard let vStream = demuxer.stream(at: demuxer.videoStreamIndex) else { throw ScenarioError.noVideo } + + var videoPackets: [UnsafeMutablePointer] = [] + defer { for p in videoPackets { var o: UnsafeMutablePointer? = p; trackedPacketFree(&o) } } + while let pkt = try demuxer.readPacket() { + if pkt.pointee.stream_index == demuxer.videoStreamIndex, videoPackets.count < 3 { + videoPackets.append(pkt) + } else { + var o: UnsafeMutablePointer? = pkt + trackedPacketFree(&o) + } + } + guard videoPackets.count == 3 else { throw ScenarioError.tooFewFrames(videoPackets.count) } + + let audioPar = makeAACCodecpar() + defer { var p: UnsafeMutablePointer? = audioPar; avcodec_parameters_free(&p) } + + let sessionDir = FileManager.default.temporaryDirectory + .appendingPathComponent("movenc-fragment-end-\(UUID().uuidString)") + try FileManager.default.createDirectory(at: sessionDir, withIntermediateDirectories: true) + defer { try? FileManager.default.removeItem(at: sessionDir) } + + let muxer = try MP4SegmentMuxer( + initialSegmentIndex: 0, + sessionDir: sessionDir, + video: MP4SegmentMuxer.VideoConfig( + codecpar: UnsafePointer(vStream.pointee.codecpar), + timeBase: vStream.pointee.time_base, + codecTagOverride: nil + ), + audio: MP4SegmentMuxer.AudioConfig( + codecpar: UnsafePointer(audioPar), + timeBase: AVRational(num: 1, den: 48_000) + ), + onInitCaptured: { _ in } + ) + + // Frame duration in the muxer's video time base, and the same instant in its audio base. + let vTb = muxer.muxerVideoTimeBase + let aTb = muxer.muxerAudioTimeBase + let frame = av_rescale_q(1, AVRational(num: 1, den: 25), vTb) + func audioTicks(frames: Double) -> Int64 { + av_rescale_q(Int64(frames * 1000), AVRational(num: 1, den: 25_000), aTb) + } + + func writeVideo(_ index: Int, duration: Int64) { + guard let pkt = av_packet_clone(videoPackets[index % videoPackets.count]) else { return } + pkt.pointee.stream_index = muxer.videoOutputStreamIndex + pkt.pointee.dts = Int64(index) * frame + pkt.pointee.pts = pkt.pointee.dts + pkt.pointee.duration = duration + if index == 0 || index == 3 { pkt.pointee.flags |= AV_PKT_FLAG_KEY } + _ = muxer.writePacket(pkt) + var o: UnsafeMutablePointer? = pkt + av_packet_free(&o) + } + func writeAudio(atFrame f: Double) { + guard let pkt = av_packet_alloc(), av_new_packet(pkt, 32) >= 0 else { return } + memset(pkt.pointee.data, 0x21, 32) + pkt.pointee.stream_index = muxer.audioOutputStreamIndex + pkt.pointee.dts = audioTicks(frames: f) + pkt.pointee.pts = pkt.pointee.dts + pkt.pointee.duration = audioTicks(frames: 0.5) + pkt.pointee.flags |= AV_PKT_FLAG_KEY + _ = muxer.writePacket(pkt) + var o: UnsafeMutablePointer? = pkt + av_packet_free(&o) + } + + // Fragment 1: the last video sample declares ten frames although the next one follows after one. + writeAudio(atFrame: 0) + writeVideo(0, duration: frame) + writeVideo(1, duration: frame) + writeVideo(2, duration: 10 * frame) + writeAudio(atFrame: 2.5) + guard case .completed = muxer.cutFragmentForNextSegment(1) else { throw ScenarioError.cutFailed } + + // Fragment 2: frames 3...6 land below the declared end and are clamped up past it. Audio at 6.5 + // releases them; frame 7 then releases that audio and stays queued at its real, lower DTS. + for i in 3...6 { writeVideo(i, duration: frame) } + writeAudio(atFrame: 6.5) + writeVideo(7, duration: frame) + + _ = muxer.finalize() + } + + private static func makeAACCodecpar() -> UnsafeMutablePointer { + let par = avcodec_parameters_alloc()! + par.pointee.codec_type = AVMEDIA_TYPE_AUDIO + par.pointee.codec_id = AV_CODEC_ID_AAC + par.pointee.sample_rate = 48_000 + par.pointee.frame_size = 1024 + av_channel_layout_default(&par.pointee.ch_layout, 2) + // AudioSpecificConfig: AAC LC, 48 kHz, stereo. + let asc: [UInt8] = [0x11, 0x90] + let buf = av_mallocz(asc.count + Int(AV_INPUT_BUFFER_PADDING_SIZE))!.assumingMemoryBound(to: UInt8.self) + buf.update(from: asc, count: asc.count) + par.pointee.extradata = buf + par.pointee.extradata_size = Int32(asc.count) + return par + } + + enum ScenarioError: Error { case noVideo, tooFewFrames(Int), cutFailed } +} + diff --git a/Tests/AetherEngineTests/NativeReaderDeferralTests.swift b/Tests/AetherEngineTests/NativeReaderDeferralTests.swift index 1f1250689..c5fcbf6e8 100644 --- a/Tests/AetherEngineTests/NativeReaderDeferralTests.swift +++ b/Tests/AetherEngineTests/NativeReaderDeferralTests.swift @@ -26,7 +26,7 @@ struct NativeReaderDeferralTests { engine.cancelNativeSubtitleReaders() } - @Test("lazy readers defer while a restart is in flight and start once it settles") + @Test("lazy readers defer while a restart is in flight and start once it settles", .timeLimit(.minutes(2))) func deferThenStart() async throws { let engine = try prepared() engine.testHookRestartInFlightOverride = true @@ -34,8 +34,7 @@ struct NativeReaderDeferralTests { #expect(engine.nativeSubtitleReadersTask == nil) #expect(engine.nativeSubtitleReaderDeferralTask != nil) engine.testHookRestartInFlightOverride = false - try await Task.sleep(nanoseconds: 700_000_000) - #expect(engine.nativeSubtitleReadersTask != nil) + try await waitFor { engine.nativeSubtitleReadersTask != nil } engine.cancelNativeSubtitleReaders() } diff --git a/Tests/AetherEngineTests/ObjectMetadataHoldTests.swift b/Tests/AetherEngineTests/ObjectMetadataHoldTests.swift new file mode 100644 index 000000000..7a2ed11e3 --- /dev/null +++ b/Tests/AetherEngineTests/ObjectMetadataHoldTests.swift @@ -0,0 +1,147 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// After a seek the TrueHD decoder returns blocks before the stream's first object metadata. Rendered +/// as they came, every object in them was silent; the hold plays them at the first metadata's state. +@Suite("Object audio before the first metadata after a reset") +struct ObjectMetadataHoldTests { + + /// Synthetic decoded blocks: one LFE and one object plane, each frame holding its block number. + final class Blocks { + private var buffers: [UnsafeMutablePointer] = [] + deinit { buffers.forEach { $0.deallocate() } } + + func block(_ number: Int, frames: Int = 40, roles: [ObjectAudioRole] = [.lfe, .object], + generation: Int = 1, updateAt: Int? = nil) -> ObjectAudioDecodedBlock { + let planes: [UnsafePointer] = roles.map { _ in + let plane = UnsafeMutablePointer.allocate(capacity: frames) + plane.initialize(repeating: Float(number), count: frames) + buffers.append(plane) + return UnsafePointer(plane) + } + let updates = updateAt.map { + [ObjectAudioMetadataUpdate(frameOffset: $0, rampFrames: 1536, states: [nil, Self.state])] + } ?? [] + return ObjectAudioDecodedBlock( + sampleRate: 48_000, frameCount: frames, inputFrameOffset: Int64(number * frames), + configurationGeneration: generation, roles: roles, planes: planes, updates: updates) + } + + static let state = ObjectAudioElementState(position: SIMD3(0, 0, 1)) + } + + /// The released copies, which own the planes their blocks point into, and those blocks. + private func drain(_ hold: ObjectMetadataHold) -> (copies: [ObjectMetadataHold.Copy], blocks: [ObjectAudioDecodedBlock]) { + var copies: [ObjectMetadataHold.Copy] = [] + while let copy = hold.nextReleased() { copies.append(copy) } + return (copies, copies.map(\.block)) + } + + private func firstStates(_ block: ObjectAudioDecodedBlock) -> [ObjectAudioElementState?]? { + block.updates.isEmpty ? nil : [nil, Blocks.state] + } + + @Test("blocks before the first metadata are held, then released in order with its state from frame 0") + func heldUntilMetadata() throws { + let blocks = Blocks(), hold = ObjectMetadataHold() + for n in 0..<3 { #expect(hold.admit(blocks.block(n), firstStates: nil) == nil) } + #expect(hold.nextReleased() == nil) + let carrier = blocks.block(3, updateAt: 23) + #expect(hold.admit(carrier, firstStates: firstStates(carrier)) == nil) + + let (copies, out) = drain(hold) + #expect(out.map(\.inputFrameOffset) == [0, 40, 80, 120]) + #expect(out.map { $0.planes[1][39] } == [0, 1, 2, 3], "audio copied intact") + withExtendedLifetime(copies) {} + let prime = try #require(out.first?.updates.first) + #expect(prime.frameOffset == 0 && prime.rampFrames == 0) + #expect(prime.states[1] == Blocks.state) + #expect(out[3].updates.map(\.frameOffset) == [23], "the stream's own update stays where it was") + } + + @Test("metadata inside the first block still plays the frames before it") + func primesTheCarrierItself() { + let blocks = Blocks(), hold = ObjectMetadataHold() + let carrier = blocks.block(0, updateAt: 11) + #expect(hold.admit(carrier, firstStates: firstStates(carrier)) == nil) + #expect(drain(hold).blocks.first?.updates.map(\.frameOffset) == [0, 11]) + } + + @Test("once metadata has arrived, blocks pass straight through, uncopied, until the next reset") + func steadyStatePassesThrough() throws { + let blocks = Blocks(), hold = ObjectMetadataHold() + let carrier = blocks.block(0, updateAt: 0) + _ = hold.admit(carrier, firstStates: firstStates(carrier)) + _ = drain(hold) + let next = blocks.block(1) + let passed = try #require(hold.admit(next, firstStates: nil)) + #expect(passed.planes[1] == next.planes[1]) + + hold.arm() + #expect(hold.admit(blocks.block(2), firstStates: nil) == nil, "held again after a reset") + } + + @Test("a presentation without objects is never held") + func bedOnlyPassesThrough() { + let blocks = Blocks(), hold = ObjectMetadataHold() + #expect(hold.admit(blocks.block(0, roles: [.lfe, .bed(.left)]), firstStates: nil) == nil) + #expect(drain(hold).blocks.count == 1) + #expect(hold.admit(blocks.block(1, roles: [.lfe, .bed(.left)]), firstStates: nil) != nil) + } + + @Test("a stream that sends no metadata within the limit is released as it is") + func releasedWithoutMetadataAtTheLimit() { + let blocks = Blocks(), hold = ObjectMetadataHold() + let count = ObjectMetadataHold.maxHeldFrames / 40 + 1 + for n in 0.. URL { let d = FileManager.default.temporaryDirectory .appendingPathComponent("prbtest-\(ProcessInfo.processInfo.globallyUniqueString)") @@ -81,7 +94,7 @@ final class PacketRingBufferTests: XCTestCase { ring.close() - let deadline = Date().addingTimeInterval(5) + let deadline = Date().addingTimeInterval(120) while FileManager.default.fileExists(atPath: scratch.path), Date() < deadline { usleep(20_000) } diff --git a/Tests/AetherEngineTests/PeakLimiterTests.swift b/Tests/AetherEngineTests/PeakLimiterTests.swift new file mode 100644 index 000000000..ad93d8cba --- /dev/null +++ b/Tests/AetherEngineTests/PeakLimiterTests.swift @@ -0,0 +1,76 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// The APAC encoder carries samples over full scale through unchanged (#731), so the bridge limits +/// the rendered bed itself. These pin what that must and must not do to the programme. +@Suite("Rendered bed peak limiter") +struct PeakLimiterTests { + + private func run(_ limiter: inout PeakLimiter, _ channels: [[Float]]) -> [[Float]] { + let frames = channels[0].count + let planes = channels.map { c -> UnsafeMutablePointer in + let p = UnsafeMutablePointer.allocate(capacity: frames) + p.initialize(from: c, count: frames) + return p + } + defer { planes.forEach { $0.deallocate() } } + limiter.process(planes, frameCount: frames) + return planes.map { Array(UnsafeBufferPointer(start: $0, count: frames)) } + } + + private func tone(_ amplitude: Float, frames: Int, hz: Float = 1000) -> [Float] { + (0.. 0) + #expect(taken.deepestDB < -12, "a 4.0 peak needs about -12.2 dB") + #expect(limiter.takeLimitedFrames().frames == 0, "the count starts over once taken") + } + + @Test("one gain for every channel, so an object between two speakers stays where it is") + func linkedAcrossChannels() { + var limiter = PeakLimiter(sampleRate: 48_000) + let left = tone(2, frames: 4800) + let right = left.map { $0 * 0.5 } + let out = run(&limiter, [left, right]) + for i in stride(from: 0, to: 4800, by: 37) where abs(out[0][i]) > 1e-4 { + #expect(abs(out[1][i] / out[0][i] - 0.5) < 1e-4, "frame \(i)") + } + } + + @Test("after a loud burst the gain recovers instead of staying down") + func releases() { + var limiter = PeakLimiter(sampleRate: 48_000) + _ = run(&limiter, [tone(3, frames: 2400)]) + // Two seconds of quiet programme: eight release time constants later it passes untouched. + let quiet = tone(0.5, frames: 96_000) + let out = run(&limiter, [quiet]) + #expect(abs(out[0][95_000...].map(abs).max()! - 0.5) < 1e-3) + #expect(abs(out[0][0..<1200].map(abs).max()!) < 0.5, "right after the burst it is still holding down") + } + + @Test("a reset forgets the burst") + func resetForgets() { + var limiter = PeakLimiter(sampleRate: 48_000) + _ = run(&limiter, [tone(3, frames: 2400)]) + limiter.reset() + let quiet = tone(0.5, frames: 4800) + #expect(run(&limiter, [quiet]) == [quiet]) + } +} diff --git a/Tests/AetherEngineTests/PlaybackErrorInfoTests.swift b/Tests/AetherEngineTests/PlaybackErrorInfoTests.swift index b5cfc4de5..2e7da3b88 100644 --- a/Tests/AetherEngineTests/PlaybackErrorInfoTests.swift +++ b/Tests/AetherEngineTests/PlaybackErrorInfoTests.swift @@ -9,6 +9,27 @@ import Testing @Suite("PlaybackErrorInfo (#376)") struct PlaybackErrorInfoTests { + @MainActor + @Test("A failed custom probe publishes its cause before the host observes the terminal state") + func customProbeRetainsCause() async throws { + let engine = try AetherEngine() + defer { engine.stop() } + var observed: PlaybackErrorInfo? + let token = engine.$state.sink { state in + if case .error = state { observed = engine.errorInfo } + } + defer { token.cancel() } + do { + _ = try await engine.load(source: .custom(DataIOReader(data: Data()), formatHint: "mpegts")) + Issue.record("An empty custom source must fail its probe") + } catch { + #expect(observed?.kind == .customSourceProbeFailed) + #expect(observed?.underlyingDomain == "AetherEngine.DemuxerError") + #expect(observed?.underlyingCode != nil) + #expect(observed == engine.errorInfo) + } + } + @Test("An underlying NSError contributes its domain and code") func capturesUnderlying() { let underlying = NSError(domain: "CoreMediaErrorDomain", code: -12939) diff --git a/Tests/AetherEngineTests/PlaybackNetworkPriorityTests.swift b/Tests/AetherEngineTests/PlaybackNetworkPriorityTests.swift new file mode 100644 index 000000000..730d80e88 --- /dev/null +++ b/Tests/AetherEngineTests/PlaybackNetworkPriorityTests.swift @@ -0,0 +1,43 @@ +import Foundation +import Darwin +import Testing +@testable import AetherEngine + +@Suite("Playback network callback priority") +struct PlaybackNetworkPriorityTests { + @Test("a request started at utility priority completes at playback priority", + .timeLimit(.minutes(1))) + func utilityRequestCompletion() async throws { + let origin = try #require(ThrottledOriginServer(totalSize: 64)) + defer { origin.stop() } + let queue = AVIOReader.makePlaybackDelegateQueue() + let session = URLSession(configuration: AVIOReader.makeSessionConfig(), + delegate: EngineTLS.sessionDelegate, delegateQueue: queue) + defer { session.invalidateAndCancel() } + let result = ProbeTestBox<(qos_class_t, Int, Bool)?>(nil) + let url = try #require(URL(string: "http://127.0.0.1:\(origin.port)/sample.bin")) + let task = session.dataTask(with: url) { data, _, error in + result.update { $0 = (qos_class_self(), data?.count ?? 0, error != nil) } + } + let worker = Thread { task.resume() } + worker.qualityOfService = .utility + worker.start() + try await waitFor { result.value != nil } + let observed = try #require(result.value) + #expect(observed.0 == QOS_CLASS_USER_INITIATED) + #expect(observed.1 == 64) + #expect(!observed.2) + } + + @Test("serial callbacks execute at the foreground demux priority", + .timeLimit(.minutes(1))) + func foregroundCallbacks() async throws { + let queue = AVIOReader.makePlaybackDelegateQueue() + #expect(queue.qualityOfService == .userInitiated) + #expect(queue.maxConcurrentOperationCount == 1) + let observed = ProbeTestBox(nil) + queue.addOperation { observed.update { $0 = qos_class_self() } } + try await waitFor { observed.value != nil } + #expect(observed.value == QOS_CLASS_USER_INITIATED) + } +} diff --git a/Tests/AetherEngineTests/ProgressiveSegmentDeliveryTests.swift b/Tests/AetherEngineTests/ProgressiveSegmentDeliveryTests.swift new file mode 100644 index 000000000..3205b3cc0 --- /dev/null +++ b/Tests/AetherEngineTests/ProgressiveSegmentDeliveryTests.swift @@ -0,0 +1,300 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// `LoadOptions.progressiveSegmentDelivery`: a VOD segment is served while its producer writes it, +/// so AVPlayer can use each fragment as it lands instead of waiting for the segment's cut. On a slow +/// link that wait is a whole segment at the link's rate, which is the time to first frame. +@Suite("Progressive segment delivery", .serialized) +struct ProgressiveSegmentDeliveryTests { + + private func makeCache() -> SegmentCache { + SegmentCache(baseDirectory: FileManager.default.temporaryDirectory + .appendingPathComponent("progressive-\(UUID().uuidString)", isDirectory: true)) + } + + /// A staging file inside the cache's session directory, as the muxer opens one. + private func makeStaging(_ cache: SegmentCache, index: Int) throws -> (URL, FileHandle) { + let url = cache.sessionDir.appendingPathComponent("staging-seg-\(index)-\(UUID().uuidString.prefix(8)).tmp") + FileManager.default.createFile(atPath: url.path, contents: nil) + return (url, try FileHandle(forWritingTo: url)) + } + + private func bytes(_ count: Int, seed: UInt8) -> Data { + Data((0.. Data? { Data("ftypinit".utf8) } + var segmentCount: Int { 4 } + func segmentDuration(at index: Int) -> Double { 4.0 } + var playlistType: HLSPlaylistType { .vod } + func mediaSegment(at index: Int) -> Data? { + VideoSegmentProvider.drain(mediaSegmentSource(at: index, onSlow: nil)) + } + func mediaSegmentSource(at index: Int, onSlow: (@Sendable () -> Void)?) -> SegmentSource? { + cache.fetchSource(index: index, timeout: 2, progressive: true) + } + func didDeliverProgressiveChunk(index: Int) { chunks.bump() } + } + + @Test("the server sends a segment while it is written and ends it at the seal", .timeLimit(.minutes(1))) + func serverStreamsWhileWritten() async throws { + let cache = makeCache() + defer { cache.close() } + let (staging, handle) = try makeStaging(cache, index: 1) + let head = bytes(4096, seed: 3), tail = bytes(8192, seed: 5) + handle.write(head) + cache.beginInProgress(index: 1, stagingPath: staging) + let provider = CacheProvider(cache: cache) + let server = HLSLocalServer(provider: provider) + try server.start() + defer { server.stop() } + + // The rest of the segment lands 0.8 s after the request; the head must not wait for it. + let writer = Thread { + Thread.sleep(forTimeInterval: 0.8) + handle.write(tail) + try? handle.close() + cache.adopt(index: 1, stagingPath: staging, byteCount: head.count + tail.count) + } + writer.start() + let (raw, firstByteAfter) = await Self.get(port: server.port, path: "/\(server.pathToken)/seg1.mp4") + let (header, body) = Self.splitResponse(raw) + #expect(firstByteAfter >= 0 && firstByteAfter < 0.6, "the head waited for the cut: \(firstByteAfter)s") + #expect(header.contains("Transfer-Encoding: chunked")) + #expect(Self.decodeChunked(body) == .complete(head + tail)) + #expect(provider.chunks.value >= 2, "each chunk is evidence for the wedge watchdog") + } + + @Test("an abandoned segment ends the connection without the final chunk", .timeLimit(.minutes(1))) + func serverAbortsAnAbandonedSegment() async throws { + let cache = makeCache() + defer { cache.close() } + let (staging, handle) = try makeStaging(cache, index: 1) + defer { try? handle.close() } + let partial = bytes(2048, seed: 6) + handle.write(partial) + cache.beginInProgress(index: 1, stagingPath: staging) + let provider = CacheProvider(cache: cache) // the server holds its provider weakly + let server = HLSLocalServer(provider: provider) + try server.start() + defer { server.stop() } + + let abandon = Thread { + Thread.sleep(forTimeInterval: 0.4) + cache.abandonInProgress(index: 1) + } + abandon.start() + let (raw, _) = await Self.get(port: server.port, path: "/\(server.pathToken)/seg1.mp4") + let (_, body) = Self.splitResponse(raw) + // A partial body AVPlayer would otherwise take for a whole segment. + #expect(Self.decodeChunked(body) == .truncated(partial)) + withExtendedLifetime(provider) {} + } + + // MARK: - Option + + @Test("the option is off by default and a tuning field, not an identity one") + func optionDefaults() { + #expect(!LoadOptions().progressiveSegmentDelivery) + var proposed = LoadOptions() + proposed.progressiveSegmentDelivery = true + #expect(SessionOptionCorrection.refusedFields(from: LoadOptions(), to: proposed).isEmpty) + } + + // MARK: - Helpers + + enum Chunked: Equatable { + case complete(Data) + case truncated(Data) + } + + private static func decodeChunked(_ body: Data) -> Chunked { + var out = Data() + var rest = body + while let lineEnd = rest.range(of: Data("\r\n".utf8)) { + let sizeLine = String(data: rest[.. (header: String, body: Data) { + guard let sep = raw.range(of: Data("\r\n\r\n".utf8)) else { return ("", Data()) } + return (String(data: raw[.. (Data, TimeInterval) { + await withCheckedContinuation { continuation in + Thread.detachNewThread { + continuation.resume(returning: blockingGET(port: port, path: path)) + } + } + } + + private static func blockingGET(port: UInt16, path: String) -> (Data, TimeInterval) { + let fd = socket(AF_INET, SOCK_STREAM, 0) + precondition(fd >= 0) + defer { close(fd) } + var noSigPipe: Int32 = 1 + setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &noSigPipe, socklen_t(MemoryLayout.size)) + var addr = sockaddr_in() + addr.sin_family = sa_family_t(AF_INET) + addr.sin_port = port.bigEndian + addr.sin_addr.s_addr = inet_addr("127.0.0.1") + let connected = withUnsafePointer(to: &addr) { ptr in + ptr.withMemoryRebound(to: sockaddr.self, capacity: 1) { connect(fd, $0, socklen_t(MemoryLayout.size)) } + } + precondition(connected == 0) + var tv = timeval(tv_sec: 0, tv_usec: 100_000) + setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, socklen_t(MemoryLayout.size)) + let request = "GET \(path) HTTP/1.1\r\nHost: 127.0.0.1\r\n\r\n" + _ = request.withCString { send(fd, $0, strlen($0), 0) } + let start = DispatchTime.now() + var firstByteAfter: TimeInterval = -1 + var collected = Data() + var lastByteAt = DispatchTime.now() + var buf = [UInt8](repeating: 0, count: 64 * 1024) + while true { + let n = recv(fd, &buf, buf.count, 0) + if n > 0 { + if firstByteAfter < 0 { + firstByteAfter = Double(DispatchTime.now().uptimeNanoseconds - start.uptimeNanoseconds) / 1e9 + } + collected.append(contentsOf: buf[0.. 30 { + break + } + } + return (collected, firstByteAfter) + } +} diff --git a/Tests/AetherEngineTests/RangeIgnoringOriginTests.swift b/Tests/AetherEngineTests/RangeIgnoringOriginTests.swift index 1593389ee..d4219cb1d 100644 --- a/Tests/AetherEngineTests/RangeIgnoringOriginTests.swift +++ b/Tests/AetherEngineTests/RangeIgnoringOriginTests.swift @@ -6,7 +6,7 @@ import Foundation /// `Range`) answered every 32 MB refill with a 200, which the reader rejects, so playback ended at /// the first range boundary. Such an origin is now caught at the open and played forward-only with /// the streaming path's bounded buffer, and an origin that does honour ranges is left alone. -@Suite("Range-ignoring origins") +@Suite("Range-ignoring origins", .offCooperativePool) struct RangeIgnoringOriginTests { private static let avseekSize: Int32 = 65536 diff --git a/Tests/AetherEngineTests/RangedResponseIntegrityTests.swift b/Tests/AetherEngineTests/RangedResponseIntegrityTests.swift index f17a1cf6e..e695dd017 100644 --- a/Tests/AetherEngineTests/RangedResponseIntegrityTests.swift +++ b/Tests/AetherEngineTests/RangedResponseIntegrityTests.swift @@ -4,7 +4,7 @@ import Foundation /// A ranged answer is only trusted as far as it matches what was asked: it has to start at the /// requested offset (audit DMX-5), and nothing past the requested end is kept (audit DMX-1). -@Suite("Ranged response integrity") +@Suite("Ranged response integrity", .offCooperativePool) struct RangedResponseIntegrityTests { private final class FirstRequestAt: @unchecked Sendable { @@ -49,8 +49,18 @@ struct RangedResponseIntegrityTests { #expect(readExact(reader, 64 * 1024) != nil) try await waitFor { !reader.hasLiveConnectionForTesting } - #expect(reader.windowBytesForTesting <= Int(firstRange), - "the window held \(reader.windowBytesForTesting)B of a \(firstRange)B range") + // The read above may itself have drawn the window below low water after the range ended, + // which is the ordinary way a bounded read moves on, and the refill can have landed before + // this looks. What over-delivery would break is where that refill starts: excess kept in the + // window moves the frontier past the range end. So any refill starts exactly at it, and + // without one the window still holds no more than the range. + let tail = Int64(512 * 1024 * 1024) - Int64(AVIOReader.tailPrefetchBytes) + let refills = server.requestLog.map(\.start).filter { $0 > 1 && $0 != tail } + #expect(refills.allSatisfy { $0 == firstRange }, "refills at \(refills), the range ended at \(firstRange)") + if refills.isEmpty { + #expect(reader.windowBytesForTesting <= Int(firstRange), + "the window held \(reader.windowBytesForTesting)B of a \(firstRange)B range") + } } @Test("a persistent 206 that starts elsewhere is refused, not placed at the requested offset", diff --git a/Tests/AetherEngineTests/RemoteDiscSessionReleaseTests.swift b/Tests/AetherEngineTests/RemoteDiscSessionReleaseTests.swift index 3bdfe4f75..78067e021 100644 --- a/Tests/AetherEngineTests/RemoteDiscSessionReleaseTests.swift +++ b/Tests/AetherEngineTests/RemoteDiscSessionReleaseTests.swift @@ -2,163 +2,167 @@ import Testing import Foundation @testable import AetherEngine -/// Audit NET-110 / DMX-110: the Demuxer builds the `HTTPDiscIOReader` for a remote disc image -/// itself, so it is the only party that can end that reader's `URLSession`. The disc adapter's -/// `ConcatIOReader.close()` is deliberately a no-op and the bridge does not own its reader, so a -/// demuxer that forgot the reader left one uninvalidated session (and its pooled keep-alive -/// socket) behind per open: 1000 opens measured as 1020 open sockets. -/// -/// The origin counts sockets that are still open, which is the one place the leak shows. -/// `.serialized`: the warm case goes through the process-wide prewarm store. -@Suite("Remote disc image sessions are released (audit NET-110)", .serialized) -struct RemoteDiscSessionReleaseTests { - - /// 0.5 s of 64x64 MPEG-2 video in an MPEG-PS pack stream (ffmpeg `-f vob`), 4096 bytes: the - /// smallest title the DVD adapter can hand to `mpegps` and have it open. - private static let vob = Data(base64Encoded: """ - AAABukQABAAEAYZmz/gAAAG7AAnDM2cAIf/g4OYAAAHgB92AwQ4xAAO3dREAA1+REGDm/wAAAbMEAEAS///gEAAAAbUUigAB - AAIAAAG4AAgAQAAAAQAAD//4AAABtY//80GAAAABARv4ffSQDMAzAoAPgKJAqBVIxGVtiSWkxCMangd7bXiwAvAC8AeABAAP - 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""", options: .ignoreUnknownCharacters)! - - private static func isoImage(vob: Data) -> Data { - let sector = ISO9660Fixture.sectorSize - var image = ISO9660Fixture.make(files: [ - .init(name: "VTS_01_1.VOB", length: vob.count, content: [UInt8](vob.prefix(sector))), - ]) - image.append(vob.dropFirst(sector)) - return image - } +extension PrewarmStoreSuites { + /// Audit NET-110 / DMX-110: the Demuxer builds the `HTTPDiscIOReader` for a remote disc image + /// itself, so it is the only party that can end that reader's `URLSession`. The disc adapter's + /// `ConcatIOReader.close()` is deliberately a no-op and the bridge does not own its reader, so a + /// demuxer that forgot the reader left one uninvalidated session (and its pooled keep-alive + /// socket) behind per open: 1000 opens measured as 1020 open sockets. + /// + /// The origin counts sockets that are still open, which is the one place the leak shows. + /// `.serialized`: the warm case goes through the process-wide prewarm store. + @Suite("Remote disc image sessions are released (audit NET-110)", .serialized, .timeLimit(.minutes(2))) + struct RemoteDiscSessionReleaseTests { + + /// 0.5 s of 64x64 MPEG-2 video in an MPEG-PS pack stream (ffmpeg `-f vob`), 4096 bytes: the + /// smallest title the DVD adapter can hand to `mpegps` and have it open. + private static let vob = Data(base64Encoded: """ + AAABukQABAAEAYZmz/gAAAG7AAnDM2cAIf/g4OYAAAHgB92AwQ4xAAO3dREAA1+REGDm/wAAAbMEAEAS///gEAAAAbUUigAB + 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748KUpfZnW+HYbmgFsBodVYGiLU0GP/+Bi//qPkdXFOQGYax3MXng77iFwDNQ+AAAAEEEymAU1hgDjAI4A1AHAYUWAOwB4GF + hhRZRYBiAgQkpKEJKLRwHYZuhKE75O5333cdAMQGBMwCHBoA0UTOAOQQgDCYAxDEEoB2AXAOyG5CAdAIQHReGFpwYWGjQKgM + E9BQCdGGAKAKgBsAZkKTiwxKeGJ+IWyMXy07krAOTz2AcEk6DQHYaTADQBMGAD8B2WA2AMgA/LKAQgVb8ANAEADrAMCwDUAv + SUxLJoYAmIQDvgO0gUITkMNQQg1BMQWQ0lI9TAHYDsAmARkSJmPD7d8yXOJCQ91qzP2xIdv1amwePw5XfGZxubvz8lH+8AmD + QHXT3G5D4YPHc8cyXc77fwFQ0m4N7slCsSRhrjj9nUMcknrXZTAKwGSTw6AMgBqQyyEANgB2Q8TUkzkwAuANS8QxqSuTCUA6 + DeS8XuEDGGjTGeBCAILALy8APiEGpAoQwDVgEyAE+cEIAksB25MDAHY1HQlIDZPGjCYWS3YkO8GlAOi+MJvbBn4aNJpYFgwr + EwBtw1PT22GANynyP+vbIdKN4mFcmAFpDAD8m4AyANADQB0TADUAzAHpN34DoBAAmGkMAPwHaQMYBunAICiEA3JoYTCWTQ0l + hhRMK5ZaEepgDoB0ATgIiLE3nB0rO6MFPj2WrZxqca7KwDnsiXx/DkwBqUAxyMxK/X2ZW+UBMx3Y7/N2x0QiYTOUhaRfGOpe + Pc85z2HK2QmAAAABAACX//uAAAABtYEf80GAAAABARKsH0AGokYDn//HAw//wMoAMuqxFTiIDR//E8G0AGAAAAECEnTZOgAA + AQMSjwP//89gA/qauVVYGiLXQYv/4AAAAQQTKYBSSg7CCJAGoA2DAwsAdgD4ospBZRYBiAmKSUnDUJRwKhmShO6vknffNx0A + nAdEwANwMgDbgKAQf7WAQEwBCjAhf8AFwDEmjSEA6AMwKBqCUWCEAOWTXIYCYllBgCcmBDkIBigBAAhATW5SS+UWXiYhCMXy + al+VnJZ4xYCQ9mHqiwHYaGAGgCAmAF4DsNxMAQAB+WGAGpDX+AYAJgHQAeFgIQC9KEBJDKATAUAd8B2khEwEL/kNQBQNQTMk + mpKKTUwNATgJBBFsBgCH/yTAFenCT1sc65ldSmOZXwfjYAySAmSksaS8yjBQVFkMsDPL5z5icxA4iymAVkJJKRPgDAAak3kI + AcADsm4N5M5CALgDUNwbi+UBjlAOg1IGcW+GdDDRrqZ4oAPA0AvLwA8JgaWBQhgGYIQBRQDHI/AD4sBOSyYGAVcaGdPJha2J + ieTd+VwLZJLiGGAOi+jBr5AYApyQ1PGBgZiYA24aWktLIZGJpSiStCnSh4MKAwA3IeAYk3AGQBoAgAoGAIQDUAdk1BfAdAJg + EA0hgB+BUslbll4A0DCYA3DSiYNJqcWGFEwrhpaMmpgYAmASiSJQDEEMAcmgKvWCCQEDzHBg//nXmSE4dzgqANUAMchAwZ+L + fCzIohFANsVvxozucLcDkAAAAQAA1//7gAAAAbWBH/NBgAAAAQESepB///m0AbQAAAECEnTZPgAAAQMSlgD6AXVWeBuaaeOi + PAAAAQQTKYQkEnB0GwBmAOCiiwB2APiiyiklJAMQECEoShHQlCQKhmShO+b7nfdXgEIDoMADXFgDbpAwCD/awCAmAGpWYBiA + XAMSaNJgDAA1AolAwN+AoWTRpDAYEtAYAnJgQNIQDEoBAAagJrQkosslFlgNshBLSGp36AkaeMf7AWPWziYNAqWGAIAEAYAP + wHZeJgBoAH4aUAhAq3/AMgEADoAPCwEIBelG3SQygEwFAHfAd8hEwEL/oNKIRaCFkk3hhSamAB+CH/34CoBcCH/yCQAGkj6d + /1rFnkc6GflBKAjrXn3J3cnnk+ANAA8SN6RuJLgfeSQ/iaBlsxLc8XZTCGk7iEwYAbQBgANSakmADYAdk0BvwwDABcAahoDf + FjOGEoB0GpJZLV0DGca+ZnkAB4WAXpwA+ISUgUJoBnwA6KAY5HYBgWAnJZMDAKvuUNAwWsYTCwM7krsjJJcTQwCiegDJwZ0h + o0NSEBhWJmDOGlpL7ZkYhlPt3WjN+lDxMDOGAFpDAD0m4AyANAEADooA1AMwB2TUJ4DABAAgGk0APwHZZKAunAIAwhANw0MJ + mSTUksMKJhXDS0b1MAD4EMAXQFAC8EMAcEj/1BG8yhQrE86fZKvt8O+cDkAa4BOglDCV1IaQTMBgDDtxjOLYcJgAAAG+AIn/ + //////////////////////////////////////////////////////////////////////////////////////////////// + /////////////////////////////////////////////////////////////////////////////////////w== + """, options: .ignoreUnknownCharacters)! + + private static func isoImage(vob: Data) -> Data { + let sector = ISO9660Fixture.sectorSize + var image = ISO9660Fixture.make(files: [ + .init(name: "VTS_01_1.VOB", length: vob.count, content: [UInt8](vob.prefix(sector))), + ]) + image.append(vob.dropFirst(sector)) + return image + } - private func url(_ origin: KeepAliveRangeOrigin, _ name: String = "disc.iso") -> URL { - URL(string: "http://127.0.0.1:\(origin.port)/\(name)")! - } + private func url(_ origin: KeepAliveRangeOrigin, _ name: String = "disc.iso") -> URL { + URL(string: "http://127.0.0.1:\(origin.port)/\(name)")! + } - private func drained(_ origin: KeepAliveRangeOrigin) async throws -> Bool { - try await waitFor(upTo: .seconds(10)) { origin.openConnectionCount == 0 } - } + private func drained(_ origin: KeepAliveRangeOrigin) async throws { + try await waitFor { origin.openConnectionCount == 0 } + } - @Test("a disc image that opens releases its session when the demuxer closes") - func openedDiscReleasesOnClose() async throws { - let origin = try #require(KeepAliveRangeOrigin(data: Self.isoImage(vob: Self.vob))) - defer { origin.stop() } + @Test("a disc image that opens releases its session when the demuxer closes") + func openedDiscReleasesOnClose() async throws { + let origin = try #require(KeepAliveRangeOrigin(data: Self.isoImage(vob: Self.vob))) + defer { origin.stop() } - let demuxer = Demuxer() - try demuxer.open(url: url(origin)) - #expect(demuxer.isDiscSource, "the fixture was not taken for a disc") - #expect(origin.openConnectionCount > 0, "the open never reached the origin") - demuxer.close() + let demuxer = Demuxer() + try demuxer.open(url: url(origin)) + #expect(demuxer.isDiscSource, "the fixture was not taken for a disc") + // Accepted, not open: whether URLSession still pools the keep-alive socket at this + // instant is not this test's question, and on a CI runner it had already let go (0). + #expect(origin.acceptedConnectionCount > 0, "the open never reached the origin") + demuxer.close() - #expect(try await drained(origin), "sockets left open: \(origin.openConnectionCount)") - } + try await drained(origin) + } - @Test("a disc image whose open throws releases its session") - func failedOpenReleasesItsSession() async throws { - // A pack-start-code-only title: recognised as a disc, and mpegps then finds no stream. - let image = ISO9660Fixture.make(files: [.init(name: "VTS_01_1.VOB", length: 2048)]) - let origin = try #require(KeepAliveRangeOrigin(data: image)) - defer { origin.stop() } + @Test("a disc image whose open throws releases its session") + func failedOpenReleasesItsSession() async throws { + // A pack-start-code-only title: recognised as a disc, and mpegps then finds no stream. + let image = ISO9660Fixture.make(files: [.init(name: "VTS_01_1.VOB", length: 2048)]) + let origin = try #require(KeepAliveRangeOrigin(data: image)) + defer { origin.stop() } + + for _ in 0..<3 { + let demuxer = Demuxer() + #expect(throws: (any Error).self) { try demuxer.open(url: url(origin)) } + demuxer.close() + } + #expect(origin.acceptedConnectionCount > 0, "the open never reached the origin") + + try await drained(origin) + } - for _ in 0..<3 { - let demuxer = Demuxer() - #expect(throws: (any Error).self) { try demuxer.open(url: url(origin)) } - demuxer.close() + /// The root directory's length, past the reader's extent cap: `wrap` throws `malformed` instead of + /// reporting "not a disc". + private static func unparseableImage() -> Data { + var image = ISO9660Fixture.make(files: [.init(name: "VTS_01_1.VOB", length: 2048)]) + let lengthOffset = 16 * ISO9660Fixture.sectorSize + 156 + 10 + image.replaceSubrange(lengthOffset..<(lengthOffset + 4), with: ISO9660Fixture.le32(16 * 1024 * 1024)) + return image } - #expect(origin.acceptedConnectionCount > 0, "the open never reached the origin") - #expect(try await drained(origin), "sockets left open: \(origin.openConnectionCount)") - } + @Test("a disc image whose structure cannot be parsed releases its session") + func throwingWrapReleasesItsSession() async throws { + let origin = try #require(KeepAliveRangeOrigin(data: Self.unparseableImage())) + defer { origin.stop() } - /// The root directory's length, past the reader's extent cap: `wrap` throws `malformed` instead of - /// reporting "not a disc". - private static func unparseableImage() -> Data { - var image = ISO9660Fixture.make(files: [.init(name: "VTS_01_1.VOB", length: 2048)]) - let lengthOffset = 16 * ISO9660Fixture.sectorSize + 156 + 10 - image.replaceSubrange(lengthOffset..<(lengthOffset + 4), with: ISO9660Fixture.le32(16 * 1024 * 1024)) - return image - } + let demuxer = Demuxer() + #expect(throws: (any Error).self) { try demuxer.open(url: url(origin)) } + demuxer.close() - @Test("a disc image whose structure cannot be parsed releases its session") - func throwingWrapReleasesItsSession() async throws { - let origin = try #require(KeepAliveRangeOrigin(data: Self.unparseableImage())) - defer { origin.stop() } + #expect(origin.acceptedConnectionCount > 0, "the open never reached the origin") + try await drained(origin) + } - let demuxer = Demuxer() - #expect(throws: (any Error).self) { try demuxer.open(url: url(origin)) } - demuxer.close() + @Test("a disc image whose structure cannot be parsed hands the warm back") + func throwingWrapReturnsTheWarm() async throws { + let origin = try #require(KeepAliveRangeOrigin(data: Self.unparseableImage())) + defer { origin.stop() } + let source = url(origin, "corrupt.iso") + _ = await SourcePrewarmFetcher.warm(url: source, extraHeaders: [:], byteBudget: 1 << 20, into: .shared) + #expect(SourcePrewarmStore.shared.isWarm(for: source), "the warm was not taken") + defer { _ = SourcePrewarmStore.shared.take(for: source) } - #expect(origin.acceptedConnectionCount > 0, "the open never reached the origin") - #expect(try await drained(origin), "sockets left open: \(origin.openConnectionCount)") - } + let demuxer = Demuxer() + defer { demuxer.close() } + #expect(throws: (any Error).self) { try demuxer.open(url: source) } - @Test("a disc image whose structure cannot be parsed hands the warm back") - func throwingWrapReturnsTheWarm() async throws { - let origin = try #require(KeepAliveRangeOrigin(data: Self.unparseableImage())) - defer { origin.stop() } - let source = url(origin, "corrupt.iso") - _ = await SourcePrewarmFetcher.warm(url: source, extraHeaders: [:], byteBudget: 1 << 20, into: .shared) - #expect(SourcePrewarmStore.shared.isWarm(for: source), "the warm was not taken") - defer { _ = SourcePrewarmStore.shared.take(for: source) } - - let demuxer = Demuxer() - defer { demuxer.close() } - #expect(throws: (any Error).self) { try demuxer.open(url: source) } - - #expect(SourcePrewarmStore.shared.isWarm(for: source), - "a throwing wrap dropped the warm instead of putting it back") + #expect(SourcePrewarmStore.shared.isWarm(for: source), + "a throwing wrap dropped the warm instead of putting it back") + } } } diff --git a/Tests/AetherEngineTests/ResolvedURLInvalidationTests.swift b/Tests/AetherEngineTests/ResolvedURLInvalidationTests.swift index 2d73b98b4..a55d28faa 100644 --- a/Tests/AetherEngineTests/ResolvedURLInvalidationTests.swift +++ b/Tests/AetherEngineTests/ResolvedURLInvalidationTests.swift @@ -9,7 +9,7 @@ import Foundation /// through the source URL for a fresh redirect. /// /// `.serialized`: the rate-limit case mutates the process-wide backoff-scale test hook. -@Suite("Resolved-URL invalidation on hard server errors", .serialized) +@Suite("Resolved-URL invalidation on hard server errors", .serialized, .offCooperativePool) struct ResolvedURLInvalidationTests { /// These tests drive real 429 and 509 answers, and each one arms the request-rate pacer's @@ -472,15 +472,7 @@ struct ResolvedURLInvalidationTests { // The bounded range plus the speculative 64 KB suffix is everything the open fetches, and // the range cannot overrun its bound, so this total is reached only once both are done. let openBytes = firstRange + 64 * 1024 - var written: Int64 = 0 - var polls = 0 - while written < openBytes, polls < 400 { - try await Task.sleep(for: .milliseconds(25)) - written = cdn.bytesWritten - polls += 1 - } - #expect(written >= openBytes, - "the opening fetches never completed; the origin wrote \(written) of \(openBytes)") + try await waitFor { cdn.bytesWritten >= openBytes } // Idle past the threshold, then let the lease die. Every wait here is a LOWER bound, so a // slow machine only makes the pin more idle, never less. diff --git a/Tests/AetherEngineTests/RestartTimelineContinuityTests.swift b/Tests/AetherEngineTests/RestartTimelineContinuityTests.swift index 6ad7ef6b9..7f7a0464e 100644 --- a/Tests/AetherEngineTests/RestartTimelineContinuityTests.swift +++ b/Tests/AetherEngineTests/RestartTimelineContinuityTests.swift @@ -121,7 +121,7 @@ struct RestartTimelineContinuityTests { @Test("A restart reproduces a segment with the continuous run's timeline", .enabled(if: fixtureExists("restart-witness-av.mp4"), "run Scripts/fetch-fixtures.sh to generate the witness clip"), - .timeLimit(.minutes(2))) + .timeLimit(.minutes(4))) func restartReproducesContinuousTimeline() throws { let engine = HLSVideoEngine(url: fixtureURL("restart-witness-av.mp4"), dvModeAvailable: false) _ = try engine.start() @@ -141,8 +141,9 @@ struct RestartTimelineContinuityTests { engine.requestRestart(at: 1) - // The restarted producer rewrites seg-1 via rename(2), which changes the inode. - let deadline = Date().addingTimeInterval(30) + // The restarted producer rewrites seg-1 via rename(2), which changes the inode. A sync test + // cannot await, so this bound stays, sized as a hang catcher rather than an expectation. + let deadline = Date().addingTimeInterval(120) var rewritten = false while Date() < deadline { if let url = prov.mediaSegmentURL(at: 1), inode(of: url) != inodeBefore { @@ -151,7 +152,7 @@ struct RestartTimelineContinuityTests { } usleep(50_000) } - try #require(rewritten, "restarted producer did not rewrite seg-1 within 30s") + try #require(rewritten, "restarted producer did not rewrite seg-1 within 120s") let restarted = try #require(prov.mediaSegment(at: 1)) let restartedTrafs = FMP4.trafSummaries(of: restarted) @@ -222,7 +223,7 @@ struct SubtitlePumpTapTests { @Test("Producing segments fills the native cue stores via the pump tap alone", .enabled(if: fixtureExists("restart-witness-subs.mkv"), "run Scripts/fetch-fixtures.sh to generate the witness clip"), - .timeLimit(.minutes(2))) + .timeLimit(.minutes(5))) func pumpTapFillsStores() throws { let engine = HLSVideoEngine(url: fixtureURL("restart-witness-subs.mkv"), dvModeAvailable: false) engine.requestNativeSubtitleTrack() @@ -239,7 +240,8 @@ struct SubtitlePumpTapTests { // tap set was armed after the producer's init had already discarded the subtitle streams, // so only two open-time cues ever arrived). let store = try #require(engine.nativeSubtitleCueStoresForSession.first) - let deadline = Date().addingTimeInterval(10) + // Sync test, so bounded; both bounds are hang catchers, not expectations. + let deadline = Date().addingTimeInterval(120) while store.readMaxCueEnd() < 11.0, Date() < deadline { usleep(50_000) } #expect(store.readMaxCueEnd() >= 11.0, "pump tap coverage stalled at \(store.readMaxCueEnd())s of ~12s produced") @@ -256,7 +258,7 @@ struct SubtitlePumpTapTests { // And a producer restart must keep harvesting: re-produce seg-1 and confirm coverage stays. engine.requestRestart(at: 1) - let redeadline = Date().addingTimeInterval(15) + let redeadline = Date().addingTimeInterval(120) while store.readMaxCueEnd() < 11.0, Date() < redeadline { usleep(50_000) } #expect(store.readMaxCueEnd() >= 11.0, "coverage lost after a producer restart") } @@ -264,7 +266,7 @@ struct SubtitlePumpTapTests { // MARK: - Tap overlay markup handling (Sodalite#32 Phase 2) -@Suite("ASS markup strip for the WebVTT rendition") +@Suite("ASS markup strip for the WebVTT rendition", .offCooperativePool) struct ASSMarkupStripTests { @Test("A raw ASS event line strips to plain text") diff --git a/Tests/AetherEngineTests/SWClockAnchorPolicyTests.swift b/Tests/AetherEngineTests/SWClockAnchorPolicyTests.swift index ff1f5376e..3c56d9387 100644 --- a/Tests/AetherEngineTests/SWClockAnchorPolicyTests.swift +++ b/Tests/AetherEngineTests/SWClockAnchorPolicyTests.swift @@ -62,15 +62,56 @@ struct SWClockAnchorPolicyTests { #expect(r.sessionZeroSeconds == 2.01) } - @Test("session zero never goes negative when the stream starts before the anchor") + @Test("a first sample behind the anchor keeps the load anchor (AE#724 resume preroll)") func firstSampleBehindAnchor() { - // A first sample far BEHIND the requested anchor (broken seek) still re-anchors - // so samples present, but session zero clamps at 0 to keep positions monotonic. + // A resume lands on the keyframe at or before the target, and its audio starts with it. + // Measured on a 10 s GOP: anchor 17.3, first decoded audio 9.984. That is preroll the + // skip threshold and the synchronizer discard, not a source that starts elsewhere. + let r = SWClockAnchorPolicy.resolve(initialSeconds: 17.3, firstSampleSeconds: 9.984) + #expect(r.anchorSeconds == 17.3) + #expect(r.sessionZeroSeconds == 0) + } + + @Test("a first sample far behind the anchor keeps it too") + func firstSampleFarBehindAnchor() { + // A reposition that fell back to the head of the file: the video skip threshold still + // stands at the anchor, so a clock moved back to the head would play audio under a + // picture that cannot present until the anchor anyway. let r = SWClockAnchorPolicy.resolve(initialSeconds: 64000, firstSampleSeconds: 10) - #expect(r.anchorSeconds == 10) + #expect(r.anchorSeconds == 64000) + #expect(r.sessionZeroSeconds == 0) + } + + @Test("a large negative first PTS on a cold start keeps the zero anchor") + func largeNegativeFirstPts() { + let r = SWClockAnchorPolicy.resolve(initialSeconds: 0, firstSampleSeconds: -5) + #expect(r.anchorSeconds == 0) #expect(r.sessionZeroSeconds == 0) } + // MARK: - Session zero for a resume on an offset-origin source + + @Test("a resume on a source whose timestamps start at 600 s carries the origin as session zero") + func resumeOnOffsetOrigin() { + // Measured on `-output_ts_offset 600`: a 17.3 s resume landed on the source's first + // packet (600.0) while publishing 18.2, because the target reached the demuxer unconverted. + #expect(SWClockAnchorPolicy.resumeSessionZero(sourceOriginSeconds: 599.979) == 599.979) + } + + @Test("an origin inside the tolerance stays a zero-based source, as on a cold start") + func resumeOnNearZeroOrigin() { + for origin in [0, 0.021, 1.4, 2.0] { + #expect(SWClockAnchorPolicy.resumeSessionZero(sourceOriginSeconds: origin) == 0) + } + } + + @Test("an unknown or negative origin is no session zero") + func resumeOnUnknownOrigin() { + for origin in [Double.nan, .infinity, -5] { + #expect(SWClockAnchorPolicy.resumeSessionZero(sourceOriginSeconds: origin) == 0) + } + } + // MARK: - Carrying a seek target back to the source axis @Test("a zero-based source seeks on the axis it already uses") diff --git a/Tests/AetherEngineTests/ScrubThumbnailSegmentMappingTests.swift b/Tests/AetherEngineTests/ScrubThumbnailSegmentMappingTests.swift index 9df683e5b..f2a05e9b5 100644 --- a/Tests/AetherEngineTests/ScrubThumbnailSegmentMappingTests.swift +++ b/Tests/AetherEngineTests/ScrubThumbnailSegmentMappingTests.swift @@ -6,6 +6,16 @@ import Foundation /// concatenating two heap copies. The reader must present exactly the bytes the concatenation did. @Suite("Scrub thumbnail segment mapping") struct ScrubThumbnailSegmentMappingTests { + @Test("absolute and restarted segment PTS use byte epoch normalization and display origin") + func previewActualTimeMapping() { + let absolute = ScrubSegmentTime.displayTime(rawPTS: 902.04, carriedOffset: 0, displayOrigin: 780) + #expect(absolute.map { abs($0 - 122.04) < 0.000001 } == true) + let restarted = ScrubSegmentTime.displayTime(rawPTS: 2.04, carriedOffset: 900, displayOrigin: 780) + #expect(restarted.map { abs($0 - 122.04) < 0.000001 } == true) + let composition = ScrubSegmentTime.displayTime(rawPTS: 10.12, carriedOffset: 889.92, displayOrigin: 780) + #expect(composition.map { abs($0 - 120.04) < 0.000001 } == true) + #expect(ScrubSegmentTime.displayTime(rawPTS: .nan, carriedOffset: 0, displayOrigin: 780) == nil) + } private func readAll(_ reader: DataIOReader, chunk: Int32) -> [UInt8] { var out: [UInt8] = [] @@ -50,12 +60,12 @@ struct ScrubThumbnailSegmentMappingTests { let initBytes: [UInt8] = [1, 2, 3, 4] let source = HLSVideoEngine.ScrubThumbnailSource( - segmentIndex: 3, initData: Data(initBytes), segmentURL: segURL) + segmentIndex: 3, startSeconds: 12, durationSeconds: 4, carriedOffset: 0, identity: "fixture-3", initData: Data(initBytes), segmentURL: segURL) let reader = try #require(source.makeReader()) #expect(readAll(reader, chunk: 1000) == initBytes + segBytes) let missing = HLSVideoEngine.ScrubThumbnailSource( - segmentIndex: 4, initData: Data(initBytes), segmentURL: dir.appendingPathComponent("gone.m4s")) + segmentIndex: 4, startSeconds: 16, durationSeconds: 4, carriedOffset: 0, identity: "fixture-4", initData: Data(initBytes), segmentURL: dir.appendingPathComponent("gone.m4s")) #expect(missing.makeReader() == nil, "an evicted segment is a nil still, not a crash") } } diff --git a/Tests/AetherEngineTests/SegmentFetchWaitTests.swift b/Tests/AetherEngineTests/SegmentFetchWaitTests.swift index c7af72054..c3fc88151 100644 --- a/Tests/AetherEngineTests/SegmentFetchWaitTests.swift +++ b/Tests/AetherEngineTests/SegmentFetchWaitTests.swift @@ -8,6 +8,7 @@ import Foundation /// stale index against the coalescer's newer target, and a re-request for the index a restart /// JUST targeted must wait for the fresh producer instead of tearing it down (device: three /// back-to-back restarts at the same index, one dropped frame each). +@Suite(.offCooperativePool) struct SegmentFetchWaitTests { private final class Recorder: @unchecked Sendable { @@ -375,7 +376,7 @@ extension SegmentFetchWaitTests { cache.store(index: 50, data: Data(repeating: 0x50, count: 8)) let provider = makeCoverageProvider( cache: cache, recorder: recorder, producerBase: 55, - sparseHoleWaitSlice: 2.0, storeOnRestart: true) + sparseHoleWaitSlice: 30.0, storeOnRestart: true) let start = DispatchTime.now() let served = provider.mediaSegment(at: 40) @@ -384,7 +385,8 @@ extension SegmentFetchWaitTests { #expect(served != nil) #expect(recorder.all == [40]) - #expect(elapsed < 0.5) + // A waiting fetch would sit out the whole 30 s slice; 10 s leaves a loaded runner room. + #expect(elapsed < 10) } @Test("an interior sparse-cache hole waits when the active producer covers it") @@ -395,15 +397,15 @@ extension SegmentFetchWaitTests { cache.store(index: 0, data: Data(repeating: 0x10, count: 8)) cache.store(index: 50, data: Data(repeating: 0x50, count: 8)) // Use a kernel-scheduled thread rather than a GCD timer: the macOS CI runner - // can starve global-queue timers past this test's 500 ms wait slice when the - // Swift Testing suites run concurrently. + // can starve global-queue timers past a short wait slice when the Swift Testing + // suites run concurrently. The slice returns as soon as the segment lands. Thread.detachNewThread { Thread.sleep(forTimeInterval: 0.05) cache.store(index: 40, data: Data(repeating: 0x40, count: 8)) } let provider = makeCoverageProvider( cache: cache, recorder: recorder, producerBase: 38, - sparseHoleWaitSlice: 0.5) + sparseHoleWaitSlice: 30.0) let served = provider.mediaSegment(at: 40) diff --git a/Tests/AetherEngineTests/SegmentStorageExhaustionTests.swift b/Tests/AetherEngineTests/SegmentStorageExhaustionTests.swift new file mode 100644 index 000000000..3b689082f --- /dev/null +++ b/Tests/AetherEngineTests/SegmentStorageExhaustionTests.swift @@ -0,0 +1,88 @@ +import Testing +import Foundation +@testable import AetherEngine + +/// A full segment volume used to reach the host as `vodSourceFailed` ("Source audio cannot be +/// muxed"): the session directory or the staging files could not be written, every revive failed +/// the same way, and the give-up arm blamed the audio. Measured on a device with 197 MB free, a 4K60 +/// title failed to start that way while the source and its audio were fine. +@Suite("Segment storage exhaustion") +struct SegmentStorageExhaustionTests { + + private final class SurfacedFailure: @unchecked Sendable { + private let lock = NSLock() + private var value: (code: Int32, reason: String, kind: PlaybackErrorKind)? + var snapshot: (code: Int32, reason: String, kind: PlaybackErrorKind)? { + lock.lock(); defer { lock.unlock() } + return value + } + func set(_ code: Int32, _ reason: String, _ kind: PlaybackErrorKind) { + lock.lock(); value = (code, reason, kind); lock.unlock() + } + } + + private func makeEngine() -> HLSVideoEngine { + HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/storage.mkv"), dvModeAvailable: false) + } + + private func makeCache() -> SegmentCache { + SegmentCache(baseDirectory: FileManager.default.temporaryDirectory + .appendingPathComponent("storage-exhaustion-\(UUID().uuidString)", isDirectory: true)) + } + + @Test("a full volume is recognised from Foundation, POSIX and a wrapped error") + func outOfSpaceClassification() { + #expect(SegmentCache.isOutOfSpace( + NSError(domain: NSCocoaErrorDomain, code: NSFileWriteOutOfSpaceError))) + #expect(SegmentCache.isOutOfSpace(NSError(domain: NSPOSIXErrorDomain, code: Int(ENOSPC)))) + #expect(SegmentCache.isOutOfSpace(NSError( + domain: NSCocoaErrorDomain, code: NSFileWriteUnknownError, + userInfo: [NSUnderlyingErrorKey: NSError(domain: NSPOSIXErrorDomain, code: Int(ENOSPC))]))) + #expect(!SegmentCache.isOutOfSpace(NSError(domain: NSPOSIXErrorDomain, code: Int(EACCES)))) + #expect(!SegmentCache.isOutOfSpace(NSError(domain: NSCocoaErrorDomain, code: NSFileNoSuchFileError))) + } + + @Test("the latch starts clear and holds once noted") + func latch() { + let cache = makeCache() + defer { cache.close() } + #expect(!cache.storageExhausted) + cache.noteStorageExhausted() + cache.noteStorageExhausted() + #expect(cache.storageExhausted) + } + + @Test("an exhausted revive on a full segment volume names the storage, not the audio") + func exhaustedGateNamesTheStorage() { + let engine = makeEngine() + let cache = makeCache() + defer { cache.close() } + cache.noteStorageExhausted() + engine.cache = cache + engine.muxerFailureReviveGate = MuxerFailureReviveGate(maxAttempts: 0) + let surfaced = SurfacedFailure() + engine.onVODSourceFailed = { code, reason, kind in surfaced.set(code, reason, kind) } + + engine.handleVODMuxerFailure() + + #expect(surfaced.snapshot?.kind == .storageExhausted, + "vodSourceFailed reads as a dead source and ends a host's fallback ladder") + #expect(surfaced.snapshot?.code == FFmpegErr.enospc) + } + + @Test("an exhausted revive with room on the volume keeps the muxer verdict") + func exhaustedGateWithRoomKeepsTheMuxerVerdict() { + let engine = makeEngine() + let cache = makeCache() + defer { cache.close() } + engine.cache = cache + engine.muxerFailureReviveGate = MuxerFailureReviveGate(maxAttempts: 0) + let surfaced = SurfacedFailure() + engine.onVODSourceFailed = { code, reason, kind in surfaced.set(code, reason, kind) } + + engine.handleVODMuxerFailure() + + #expect(surfaced.snapshot?.kind == .vodSourceFailed) + #expect(surfaced.snapshot?.reason == "Source audio cannot be muxed") + } +} diff --git a/Tests/AetherEngineTests/SequentialOriginReaderTests.swift b/Tests/AetherEngineTests/SequentialOriginReaderTests.swift index 4d1d3d453..75882329a 100644 --- a/Tests/AetherEngineTests/SequentialOriginReaderTests.swift +++ b/Tests/AetherEngineTests/SequentialOriginReaderTests.swift @@ -9,7 +9,7 @@ import Foundation /// reader must run ONE unranged GET from byte 0 - no bounded-range windowing, no suffix/tail /// probe, no size probe, no detour fills - and must report a lost connection as EIO, never EOF /// (the consumer treats EOF as played-to-the-end and deliberately never retries it). -@Suite("Sequential-origin reader") +@Suite("Sequential-origin reader", .offCooperativePool) struct SequentialOriginReaderTests { private func drain(_ reader: AVIOReader, upTo target: Int64, chunk: Int = 256 * 1024) -> (read: Int64, lastReturn: Int32) { diff --git a/Tests/AetherEngineTests/ServedFromMemoryProgressTests.swift b/Tests/AetherEngineTests/ServedFromMemoryProgressTests.swift index 3edeef85c..3e946e66f 100644 --- a/Tests/AetherEngineTests/ServedFromMemoryProgressTests.swift +++ b/Tests/AetherEngineTests/ServedFromMemoryProgressTests.swift @@ -15,18 +15,14 @@ import Foundation /// to the #377 budget, which caps it to one request and takes the detour out of service /// (`originRequiresSerialRequests`), while the spans keep serving. That is the field shape #380 /// described as "one served byte reset the whole ladder and it started over". +@Suite(.offCooperativePool) struct ServedFromMemoryProgressTests { /// The frontier refill is only requested once the initial range has COMPLETED (`activeTask` /// cleared by the completion callback), so the test waits on that state rather than on a /// sleep long enough to probably work. - private static func awaitRangeDelivered(_ reader: AVIOReader) -> Bool { - let deadline = Date().addingTimeInterval(20) - while Date() < deadline { - if !reader.hasLiveConnectionForTesting { return true } - Thread.sleep(forTimeInterval: 0.01) - } - return false + private static func awaitRangeDelivered(_ reader: AVIOReader) async throws { + try await waitFor { !reader.hasLiveConnectionForTesting } } @discardableResult @@ -55,13 +51,14 @@ struct ServedFromMemoryProgressTests { /// Serves from inside the resident window until the refused frontier has charged the ladder. /// The charge is paced (`nextFaultedRefillAt`), so this re-reads rather than sleeping once and /// hoping the ladder ran; each iteration's read is itself the thing that can charge it. - private static func chargeLadderFromWindow(_ reader: AVIOReader, near offset: Int64) -> Int { - for step in 0..<200 { + private static func chargeLadderFromWindow(_ reader: AVIOReader, near offset: Int64) async throws -> Int { + var step = 0 + while true { readOnce(reader, at: offset + Int64(step % 8) * 64 * 1024, bytes: 32 * 1024) if reader.rateLimitStreakForTesting > 0 { return reader.rateLimitStreakForTesting } - Thread.sleep(forTimeInterval: 0.01) + step += 1 + try await Task.sleep(for: .milliseconds(10)) } - return reader.rateLimitStreakForTesting } /// A metered origin refusing the frontier while the parser returns to the retained head: the @@ -90,7 +87,7 @@ struct ServedFromMemoryProgressTests { try reader.open() #expect(Self.readOnce(reader, at: 0, bytes: 64 * 1024) > 0) - #expect(Self.awaitRangeDelivered(reader), "the bounded initial range never completed") + try await Self.awaitRangeDelivered(reader) // Past winLookback (2 MB) + winTrimBatch (4 MB), so the window has trimmed and a read at 0 // can no longer be served from it. @@ -98,7 +95,7 @@ struct ServedFromMemoryProgressTests { #expect(walked == 6 * 1024 * 1024 + 512 * 1024, "need a trimmed window for the read at 0 to reach the head span (read \(walked))") - let charged = Self.chargeLadderFromWindow(reader, near: 6 * 1024 * 1024) + let charged = try await Self.chargeLadderFromWindow(reader, near: 6 * 1024 * 1024) #expect(charged > 0, "the refused frontier must have charged the rate-limit ladder") // The parse's return to the head, repeatedly. Every one of these is a memcpy out of bytes diff --git a/Tests/AetherEngineTests/SoftwareDVRRetentionTests.swift b/Tests/AetherEngineTests/SoftwareDVRRetentionTests.swift new file mode 100644 index 000000000..4a9b701bb --- /dev/null +++ b/Tests/AetherEngineTests/SoftwareDVRRetentionTests.swift @@ -0,0 +1,101 @@ +import XCTest +@testable import AetherEngine + +final class SoftwareDVRRetentionTests: XCTestCase { + private func ring(cap: Int) throws -> PacketRingBuffer { + let directory = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString) + try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true) + return try PacketRingBuffer(windowSeconds: 300, scratch: directory, retention: .init(startupMaximumBytes: cap, playbackCushionBytes: 8 << 20, playbackCushionSeconds: 2)) + } + + func testDefaultSpoolDoesNotOptInToHostRetention() throws { + let directory = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString) + try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true) + let ring = try PacketRingBuffer(windowSeconds: 300, scratch: directory) + defer { ring.close() } + XCTAssertFalse(ring.setLimits(.init(windowSeconds: nil, maximumBytes: 0, minimumFreeBytes: 0), + availableBytes: nil)) + try ring.append(pts: 0, isKeyframe: true, isVideo: true, bytes: Data([1])) + XCTAssertEqual(ring.retainedBytes, 1) + XCTAssertEqual(ring.retainedWindowSeconds, 300) + } + + func testActualPayloadEvictsWholeGOPsAndKeepsFeederAdvancing() throws { + let ring = try ring(cap: 12) + defer { ring.close() } + for i in 0..<60 { + try ring.append(pts: Double(i), isKeyframe: i.isMultiple(of: 3), isVideo: true, + bytes: Data(repeating: UInt8(i), count: 2)) + XCTAssertLessThanOrEqual(ring.retainedBytes, 12) + let bounds = ring.seqBounds + let first = try XCTUnwrap(ring.packet(atSeq: bounds.first)) + XCTAssertTrue(first.isKeyframe) + XCTAssertEqual(ring.packet(atSeq: bounds.end - 1)?.pts, Double(i)) + } + XCTAssertGreaterThan(ring.seqBounds.first, 0) + XCTAssertEqual(ring.retainedBytes, 12) + } + + func testOversizedGOPCannotEscapeCapAndNextKeyframeRecovers() throws { + let ring = try ring(cap: 4) + defer { ring.close() } + try ring.append(pts: 0, isKeyframe: true, isVideo: true, bytes: Data([0, 0])) + try ring.append(pts: 1, isKeyframe: false, isVideo: true, bytes: Data([1, 1, 1])) + XCTAssertEqual(ring.retainedBytes, 0) + try ring.append(pts: 2, isKeyframe: false, isVideo: true, bytes: Data([2])) + XCTAssertEqual(ring.retainedBytes, 0) + try ring.append(pts: 3, isKeyframe: true, isVideo: true, bytes: Data([3])) + XCTAssertEqual(ring.packet(atSeq: ring.seqBounds.first)?.pts, 3) + // A single oversized packet is rejected before it is written. + try ring.append(pts: 4, isKeyframe: true, isVideo: true, bytes: Data(repeating: 4, count: 5)) + XCTAssertEqual(ring.retainedBytes, 0) + } + + func testDeniedAndExpiredCapacityRemoveHistoryButKeepBoundedLiveFeeding() throws { + for expired in [false, true] { + let ring = try ring(cap: 32 * 1024 * 1024) + defer { ring.close() } + let packet = Data(repeating: 1, count: 1024 * 1024) + for i in 0..<20 { + try ring.append(pts: Double(i), isKeyframe: true, isVideo: true, bytes: packet) + } + XCTAssertEqual(ring.retainedBytes, 20 * packet.count) + ring.setLimits(.init(windowSeconds: 300, maximumBytes: 32 * 1024 * 1024, + minimumFreeBytes: 128 * 1024 * 1024, + capacityValidUntil: expired ? -1 : nil), + availableBytes: expired ? 1024 * 1024 * 1024 : 0) + for i in 20..<30 { + try ring.append(pts: Double(i), isKeyframe: true, isVideo: true, bytes: packet) + XCTAssertLessThanOrEqual(ring.retainedBytes, 8 << 20) + XCTAssertEqual(ring.packet(atSeq: ring.seqBounds.end - 1)?.pts, Double(i)) + } + XCTAssertNil(ring.retainedWindowSeconds) + XCTAssertGreaterThanOrEqual(try XCTUnwrap(ring.oldestPts), 27) + } + } + + func testEvictionRemovesActualFilesNotJustAccounting() throws { + let directory = FileManager.default.temporaryDirectory.appendingPathComponent(UUID().uuidString) + try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true) + let ring = try PacketRingBuffer(windowSeconds: 300, scratch: directory, retention: .init(startupMaximumBytes: 12, playbackCushionBytes: 8 << 20, playbackCushionSeconds: 2)) + defer { ring.close() } + for i in 0..<40 { + try ring.append(pts: Double(i), isKeyframe: i.isMultiple(of: 2), isVideo: true, + bytes: Data(repeating: 1, count: 2)) + } + let urls = try FileManager.default.contentsOfDirectory(at: directory, includingPropertiesForKeys: [.fileSizeKey]) + let diskBytes = try urls.reduce(0) { sum, url in + sum + (try url.resourceValues(forKeys: [.fileSizeKey]).fileSize ?? 0) + } + XCTAssertEqual(diskBytes, ring.retainedBytes) + XCTAssertLessThanOrEqual(diskBytes, 12) + } + + func testClosedRingCannotBeResurrectedByLateAppend() throws { + let ring = try ring(cap: 4) + ring.close() + try ring.append(pts: 0, isKeyframe: true, isVideo: true, bytes: Data([1])) + XCTAssertEqual(ring.retainedBytes, 0) + XCTAssertEqual(ring.seqBounds.first, ring.seqBounds.end) + } +} diff --git a/Tests/AetherEngineTests/SoftwarePacketReadAheadParkTests.swift b/Tests/AetherEngineTests/SoftwarePacketReadAheadParkTests.swift index 62db040fc..64d13b127 100644 --- a/Tests/AetherEngineTests/SoftwarePacketReadAheadParkTests.swift +++ b/Tests/AetherEngineTests/SoftwarePacketReadAheadParkTests.swift @@ -11,7 +11,7 @@ import Testing /// disk budget as the only bound, which in a session is the difference between a window and the /// whole file. The limit is measured on the reservoir instead: the newest stored video timestamp /// against the one the consumer last took. -@Suite("Software VOD read-ahead park (#512)") +@Suite("Software VOD read-ahead park (#512)", .offCooperativePool) struct SoftwarePacketReadAheadParkTests { private final class SourceCounter: @unchecked Sendable { diff --git a/Tests/AetherEngineTests/SourceOpenPolicyTests.swift b/Tests/AetherEngineTests/SourceOpenPolicyTests.swift new file mode 100644 index 000000000..901293e6e --- /dev/null +++ b/Tests/AetherEngineTests/SourceOpenPolicyTests.swift @@ -0,0 +1,22 @@ +import Foundation +import Testing +@testable import AetherEngine + +struct SourceOpenPolicyTests { + @Test func invalidBudgetsUseDefaults() { + for value in [Double.nan, .infinity, -.infinity, -1, 0] { + #expect(SourceOpenPolicy(firstByteTimeout: value, sizeProbeTimeout: value) == .init()) + } + #expect(SourceOpenPolicy(firstByteTimeout: 999, sizeProbeTimeout: 999) + == .init(firstByteTimeout: 120, sizeProbeTimeout: 120)) + } + + @Test func policiesSurviveProfileCopiesAndReopens() { + let policy = SourceOpenPolicy(firstByteTimeout: 5, sizeProbeTimeout: 8) + let options = LoadOptions(sourceOpenPolicy: policy) + #expect(options.sourceOpenPolicy == policy) + let profile = DemuxerOpenProfile.playback.withSourceOpenPolicy(policy) + .withHeldSourceConnection(true).withProbeBudget(probesize: 100, maxAnalyzeDuration: 100) + #expect(profile.sourceOpenPolicy == policy) + } +} diff --git a/Tests/AetherEngineTests/SourceOpenRecoveryTests.swift b/Tests/AetherEngineTests/SourceOpenRecoveryTests.swift new file mode 100644 index 000000000..35b64cd74 --- /dev/null +++ b/Tests/AetherEngineTests/SourceOpenRecoveryTests.swift @@ -0,0 +1,291 @@ +import Foundation +import Testing +@testable import AetherEngine + +/// Fires `action` from a thread of its own the moment `condition` holds. The engine work runs on +/// `ProbeTestJob`'s thread, so a step that must land inside one of its short windows (a slot wait, +/// a stalled body) cannot be left to an async test task: on a loaded runner the cooperative pool +/// resumed those 20 ms polls tens of seconds late, missed the window, and the test hung or saw a +/// timeout it was not about. +private final class ProbeTestTrigger: @unchecked Sendable { + private let fired = ProbeTestBox(false) + var didFire: Bool { fired.value } + + init(deadline seconds: TimeInterval = 300, when condition: @escaping @Sendable () -> Bool, + _ action: @escaping @Sendable () -> Void) { + let fired = self.fired + Thread.detachNewThread { + let end = Date(timeIntervalSinceNow: seconds) + while !condition() { + guard Date() < end else { return } + usleep(1_000) + } + action() + fired.update { $0 = true } + } + } +} + +@Suite(.timeLimit(.minutes(2))) +struct SourceOpenRecoveryTests { + private let bytes = Data(repeating: 0x47, count: 8192) + + private func url(_ origin: ProbeHTTPTestOrigin) -> URL { + URL(string: "http://127.0.0.1:\(origin.port)/media.bin")! + } + + private func readPrefix(_ reader: AVIOReader) async throws -> Data { + let job = ProbeTestJob { + var data = Data(count: 16) + let count = data.withUnsafeMutableBytes { + reader.read(into: $0.baseAddress!.assumingMemoryBound(to: UInt8.self), size: 16) + } + return count > 0 ? Data(data.prefix(Int(count))) : Data() + } + return try await job.outcome().get() + } + + @Test("A silent initial request reaches the alternate request shape within the host budget") + func coldRequestRecovery() async throws { + let origin = try ProbeHTTPTestOrigin(data: bytes, stage: .headers) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, boundedInitialFetch: 4096, + sourceOpenPolicy: .init(firstByteTimeout: 0.2, sizeProbeTimeout: 2)) + defer { reader.markClosed(); reader.close(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + try await waitFor { origin.blocked.entered } + try await job.outcome().get() + #expect(reader.isSeekable) + #expect(try await readPrefix(reader) == bytes.prefix(16)) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.peakInflight == 1) + #expect(origin.requests.map(\.method).allSatisfy { $0 == "GET" }) + #expect(origin.requests.contains { $0.range == "bytes=0-" }) + #expect(origin.requests.count == 2, "the recovered data connection must be retained, not reprobed") + #expect(origin.failure == nil) + } + + @Test("A single-request origin tries Range, HEAD and bounded Range without a speculative fan") + func serialFallbacks() async throws { + let origin = try ProbeHTTPTestOrigin(data: bytes, response: { request, index in + guard index < 2 else { return nil } + let status = request.method == "HEAD" ? 403 : 405 + return Data("HTTP/1.1 \(status) Refused\r\nContent-Length: 0\r\nConnection: close\r\n\r\n".utf8) + }) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, prefetchEnabled: false, + sourceOpenPolicy: .init(firstByteTimeout: 1, sizeProbeTimeout: 3)) + defer { reader.markClosed(); reader.close(); origin.stop() } + try await ProbeTestJob { try reader.open() }.outcome().get() + #expect(reader.isSeekable) + #expect(try await readPrefix(reader) == bytes.prefix(16)) + #expect(Array(origin.requests.prefix(3).map(\.method)) == ["GET", "HEAD", "GET"]) + #expect(Array(origin.requests.prefix(3).map(\.range)) == ["bytes=0-", nil, "bytes=0-1"]) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.peakInflight == 1) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 0) + #expect(origin.failure == nil) + } + + @Test("A held connection whose headers resolved the size survives a delayed body") + func slowBodyKeepsConnection() async throws { + let origin = try ProbeHTTPTestOrigin(data: bytes, stage: .body, stallOpenEndedBody: true) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + // The held transport exposes the response head before any body byte. URLSession can + // coalesce them, which would exercise the unknown-size fallback instead of this branch. + let reader = AVIOReader(url: source, boundedInitialFetch: 4096, heldConnection: true, + sourceOpenPolicy: .init(firstByteTimeout: 0.2, sizeProbeTimeout: 2)) + defer { reader.markClosed(); reader.close(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + // Release the body the moment the open returns, before the stall machinery can give up on + // it, and count the requests at that same moment. + let requestsAtOpen = ProbeTestBox(-1) + let release = ProbeTestTrigger(when: { job.isFinished }) { + requestsAtOpen.update { $0 = origin.requests.count } + origin.blocked.open() + } + try await job.outcome().get() + try await waitFor { release.didFire } + #expect(origin.blocked.entered) + #expect(reader.isSeekable) + #expect(requestsAtOpen.value == 1, "a slow body must not cause a redundant size probe") + #expect(try await readPrefix(reader) == bytes.prefix(16)) + // Reading can legitimately trigger a new forward prefetch after the initial window. + // It must not repeat discovery or restart from zero. + #expect(origin.requests.dropFirst().allSatisfy { + $0.method == "GET" && $0.range != nil && $0.range != "bytes=0-" + && $0.range != "bytes=0-4095" + }) + } + + @Test("Silent serial fallbacks share one deadline before forward-only playback") + func sharedProbeDeadline() async throws { + let gate = ProbeTestGate() + let origin = try ProbeHTTPTestOrigin(data: bytes, response: { request, _ in + if request.range == "bytes=0-" || request.range == "bytes=0-1" || request.method == "HEAD" { + gate.wait() + } + return nil + }) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, prefetchEnabled: false, + sourceOpenPolicy: .init(firstByteTimeout: 1, sizeProbeTimeout: 0.45)) + defer { reader.markClosed(); reader.close(); gate.open(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + try await job.outcome().get() + #expect(!reader.isSeekable, "without a size, playback must not advertise byte seeking") + #expect(try await readPrefix(reader) == bytes.prefix(16)) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 0) + } + + @Test("A winning size probe cancels and joins its slow siblings before data fetch") + func winningProbeReleasesSiblings() async throws { + let gate = ProbeTestGate() + let origin = try ProbeHTTPTestOrigin(data: bytes, response: { request, _ in + if request.range == "bytes=0-" || request.range == "bytes=0-1" { gate.wait() } + return nil + }) + let source = url(origin) + let reader = AVIOReader(url: source, prefetchEnabled: false, + sourceOpenPolicy: .init(firstByteTimeout: 1, sizeProbeTimeout: 10)) + defer { reader.markClosed(); reader.close(); gate.open(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + try await waitFor { gate.entered } + try await job.outcome().get() + #expect(!gate.isOpen, "the winner must not wait for the losing origin to respond") + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 0, + "no losing probe may retain a ticket after open") + #expect(reader.isSeekable) + #expect(try await readPrefix(reader) == bytes.prefix(16)) + } + + @Test("Teardown cancels a metadata request waiting for the origin slot") + func cancellationWhileWaitingForSlot() async throws { + let origin = try ProbeHTTPTestOrigin(data: bytes) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let ticket = OriginRequestBudget.shared.acquire(for: source, label: "test-holder", timeout: 1) + let reader = AVIOReader(url: source, prefetchEnabled: false, + sourceOpenPolicy: .init(firstByteTimeout: 1, sizeProbeTimeout: 30)) + defer { reader.close(); OriginRequestBudget.shared.release(ticket); origin.stop() } + let job = ProbeTestJob { try reader.open() } + let parked = ProbeTestBox(false) + let teardown = ProbeTestTrigger(when: { + OriginRequestBudget.shared.snapshot(for: source)?.waiting == 1 || job.isFinished + }) { + parked.update { $0 = !job.isFinished } + reader.markClosed() + } + let result = try await job.outcome() + try await waitFor { teardown.didFire } + try #require(parked.value, "the size probe never parked for the held slot") + if case .success = result { Issue.record("cancelled open must not succeed") } + #expect(origin.requests.isEmpty) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 1) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.waiting == 0) + } + @Test("Unanswered opens fail within their budgets without inventing a forward-only source") + func unansweredOpenDoesNotBecomeSequential() async throws { + let gate = ProbeTestGate() + let origin = try ProbeHTTPTestOrigin(data: bytes, response: { _, _ in gate.wait(); return nil }) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, + sourceOpenPolicy: .init(firstByteTimeout: 0.15, sizeProbeTimeout: 0.25)) + defer { reader.markClosed(); reader.close(); gate.open(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + let result = try await job.outcome() + if case .failure(let error) = result { + #expect(error as? AVIOReaderError == .requestTimeout) + } else { Issue.record("no response is not a successful sequential open") } + #expect(origin.requests.count == 2) + #expect(origin.requests.allSatisfy { $0.method == "GET" && $0.range != nil }) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 0) + } + + @Test("Cancelling the alternate data open releases the origin slot promptly") + func cancelDataRetry() async throws { + let gate = ProbeTestGate() + let origin = try ProbeHTTPTestOrigin(data: bytes, response: { _, _ in gate.wait(); return nil }) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, + sourceOpenPolicy: .init(firstByteTimeout: 0.15, sizeProbeTimeout: 30)) + defer { reader.close(); gate.open(); origin.stop() } + let job = ProbeTestJob { try reader.open() } + let teardown = ProbeTestTrigger(when: { origin.requests.count == 2 || job.isFinished }) { + reader.markClosed() + } + let result = try await job.outcome() + try await waitFor { teardown.didFire } + if case .failure(let error) = result { #expect(error is CancellationError) } + else { Issue.record("cancelled data retry must not open") } + #expect(OriginRequestBudget.shared.snapshot(for: source)?.inflight == 0) + } + + @Test("A truncated 206 body recovers without losing or duplicating bytes") + func truncatedBodyRecovers() async throws { + let content = Data((0..<8192).map { UInt8($0 % 251) }) + let origin = try ProbeHTTPTestOrigin(data: content, response: { _, index in + guard index == 0 else { return nil } + return Data("HTTP/1.1 206 Partial Content\r\nContent-Length: 8192\r\nContent-Range: bytes 0-8191/8192\r\nConnection: close\r\n\r\n".utf8) + content.prefix(2048) + }) + let source = url(origin) + OriginRequestBudget.shared.setHostLimit(1, for: source) + let reader = AVIOReader(url: source, sourceOpenPolicy: .init(firstByteTimeout: 1, sizeProbeTimeout: 1)) + defer { reader.markClosed(); reader.close(); origin.stop() } + let received = ProbeTestBox(Data()) + let job = ProbeTestJob { + try reader.open() + var result = Data() + var chunk = [UInt8](repeating: 0, count: 1024) + while result.count < content.count { + let count = chunk.withUnsafeMutableBufferPointer { reader.read(into: $0.baseAddress!, size: 1024) } + guard count > 0 else { break } + result.append(contentsOf: chunk.prefix(Int(count))) + } + received.update { $0 = result } + } + try await job.outcome().get() + #expect(received.value == content) + #expect(reader.isSeekable) + // URLSession may discard a short body before delivering any data callback. In that + // case byte zero is the unread frontier; otherwise the delivered prefix is retained. + #expect(origin.requests.count >= 2) + let retries = origin.requests.dropFirst().compactMap { $0.range } + #expect(!retries.isEmpty) + #expect(retries.allSatisfy { $0.hasPrefix("bytes=0-") || $0.hasPrefix("bytes=2048-") }) + #expect(OriginRequestBudget.shared.snapshot(for: source)?.peakInflight == 1) + } + @MainActor + @Test("An exhausted opening budget stays a transport failure and is not repeated by routing") + func exhaustedOpenDoesNotReprobe() async throws { + let gate = ProbeTestGate() + let origin = try ProbeHTTPTestOrigin(data: Data(repeating: 0, count: 8192), + response: { _, _ in gate.wait(); return nil }) + let engine = try AetherEngine() + defer { engine.stop(); gate.open(); origin.stop() } + var options = LoadOptions(sourceOpenPolicy: .init(firstByteTimeout: 0.15, sizeProbeTimeout: 0.25)) + options.maxConcurrentSourceRequests = 1 + options.suppressDisplayCriteria = true + do { + try await engine.load(url: URL(string: "http://127.0.0.1:\(origin.port)/media.mkv")!, options: options) + Issue.record("an unanswered source must not load successfully") + } catch { + #expect(error as? AVIOReaderError == .requestTimeout) + } + // The retry can still be on its way to the origin's parser when load() gives up, or never + // reach it: the reader cancels it sizeProbeTimeout after resume, and a loaded machine may + // not have put it on the wire by then. So its arrival gets a grace, not an unbounded wait, + // and the verdict is the ceiling: routing must not add a third request. + try await waitFor(upTo: .seconds(2)) { origin.requests.count >= 2 } + #expect(origin.requests.count <= 2, "routing must not repeat the open") + #expect(engine.errorInfo?.kind == .sourceOpenFailed) + #expect(engine.errorInfo?.underlyingDomain == NSURLErrorDomain) + #expect(!engine.canSeek) + #expect(engine.errorInfo?.underlyingCode == URLError.timedOut.rawValue) + } + +} diff --git a/Tests/AetherEngineTests/SourcePrewarmAdoptionTests.swift b/Tests/AetherEngineTests/SourcePrewarmAdoptionTests.swift index e692fde65..56be57875 100644 --- a/Tests/AetherEngineTests/SourcePrewarmAdoptionTests.swift +++ b/Tests/AetherEngineTests/SourcePrewarmAdoptionTests.swift @@ -2,227 +2,229 @@ import Testing import Foundation @testable import AetherEngine -/// #551: what a warmed source is worth at the next open. -/// -/// The claim being pinned is not "fewer bytes" but "no round trip": the reads a cold open pays -/// three sequential round trips for (#281) are served out of RAM, and the data connection starts -/// where the warm bytes end instead of at byte zero. -/// -/// `.serialized`: the prewarm store is process-wide. The origin budget is too, so nothing here -/// resets it globally; each server has its own port and therefore its own origin key. -@Suite("Source prewarm adoption (#551)", .serialized) -struct SourcePrewarmAdoptionTests { - - private let fileSize: Int64 = 64 * 1024 * 1024 - private let warmBytes = 256 * 1024 - - private func url(_ server: ThrottledOriginServer) -> URL { - URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! - } +extension PrewarmStoreSuites { + /// #551: what a warmed source is worth at the next open. + /// + /// The claim being pinned is not "fewer bytes" but "no round trip": the reads a cold open pays + /// three sequential round trips for (#281) are served out of RAM, and the data connection starts + /// where the warm bytes end instead of at byte zero. + /// + /// `.serialized`: the prewarm store is process-wide. The origin budget is too, so nothing here + /// resets it globally; each server has its own port and therefore its own origin key. + @Suite("Source prewarm adoption (#551)", .serialized, .timeLimit(.minutes(2))) + struct SourcePrewarmAdoptionTests { + + private let fileSize: Int64 = 64 * 1024 * 1024 + private let warmBytes = 256 * 1024 + + private func url(_ server: ThrottledOriginServer) -> URL { + URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! + } - private func warm(_ server: ThrottledOriginServer, bytes: Int) async throws { - _ = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: [:], - byteBudget: bytes, into: .shared) - } + private func warm(_ server: ThrottledOriginServer, bytes: Int) async throws { + _ = await SourcePrewarmFetcher.warm(url: url(server), extraHeaders: [:], + byteBudget: bytes, into: .shared) + } - /// The warm open deliberately does not wait for the data connection, so the request it issues - /// is still on the wire when `open()` returns. Waiting for it here is the test's job, not the - /// reader's. - private func waitForRequest(_ server: ThrottledOriginServer, startingAt start: Int64) async throws { - try await waitFor(upTo: .seconds(10)) { - server.requestedRanges.contains(where: { $0.start == start }) + /// The warm open deliberately does not wait for the data connection, so the request it issues + /// is still on the wire when `open()` returns. Waiting for it here is the test's job, not the + /// reader's. + private func waitForRequest(_ server: ThrottledOriginServer, startingAt start: Int64) async throws { + try await waitFor { + server.requestedRanges.contains(where: { $0.start == start }) + } } - } - private func read(_ reader: AVIOReader, _ size: Int) -> Int32 { - let buf = UnsafeMutablePointer.allocate(capacity: size) - defer { buf.deallocate() } - return reader.read(into: buf, size: Int32(size)) - } + private func read(_ reader: AVIOReader, _ size: Int) -> Int32 { + let buf = UnsafeMutablePointer.allocate(capacity: size) + defer { buf.deallocate() } + return reader.read(into: buf, size: Int32(size)) + } - @Test("the reads inside the warm head cost no request at all") - func warmHeadServesWithoutTheNetwork() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - let warmRequests = server.rangeRequestCount - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() - #expect(read(reader, 64 * 1024) == 64 * 1024) - #expect(read(reader, 64 * 1024) == 64 * 1024) - - let opened = server.requestedRanges.dropFirst(warmRequests) - #expect(!opened.contains(where: { $0.start == 0 }), - "the open re-fetched bytes it already had: \(Array(opened))") - } + @Test("the reads inside the warm head cost no request at all") + func warmHeadServesWithoutTheNetwork() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + let warmRequests = server.rangeRequestCount + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() + #expect(read(reader, 64 * 1024) == 64 * 1024) + #expect(read(reader, 64 * 1024) == 64 * 1024) + + let opened = server.requestedRanges.dropFirst(warmRequests) + #expect(!opened.contains(where: { $0.start == 0 }), + "the open re-fetched bytes it already had: \(Array(opened))") + } - /// The data connection is not skipped, it is moved: playback still needs the bytes behind the - /// warm head, and starting that fetch during the open is what overlaps it with the probe. - @Test("the data connection starts where the warm bytes end") - func connectionStartsAtTheWarmFrontier() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - let warmRequests = server.rangeRequestCount - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() - try await waitForRequest(server, startingAt: Int64(warmBytes)) - - let opened = Array(server.requestedRanges.dropFirst(warmRequests)) - #expect(opened.contains(where: { $0.start == Int64(warmBytes) }), - "no connection at the warm frontier: \(opened)") - #expect(!opened.contains(where: { $0.start == 0 }), - "the open went back to byte zero: \(opened)") - } + /// The data connection is not skipped, it is moved: playback still needs the bytes behind the + /// warm head, and starting that fetch during the open is what overlaps it with the probe. + @Test("the data connection starts where the warm bytes end") + func connectionStartsAtTheWarmFrontier() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + let warmRequests = server.rangeRequestCount + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() + try await waitForRequest(server, startingAt: Int64(warmBytes)) + + let opened = Array(server.requestedRanges.dropFirst(warmRequests)) + #expect(opened.contains(where: { $0.start == Int64(warmBytes) }), + "no connection at the warm frontier: \(opened)") + #expect(!opened.contains(where: { $0.start == 0 }), + "the open went back to byte zero: \(opened)") + } - /// The size comes out of the warm, so the open neither probes for it nor waits on a response - /// header to learn it. Without it the reader would fall back to the probe ladder and the whole - /// saving would be spent there. - @Test("the size is adopted with the bytes") - func sizeIsAdopted() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() - - #expect(reader.resolvedByteSize == fileSize) - } + /// The size comes out of the warm, so the open neither probes for it nor waits on a response + /// header to learn it. Without it the reader would fall back to the probe ladder and the whole + /// saving would be spent there. + @Test("the size is adopted with the bytes") + func sizeIsAdopted() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() + + #expect(reader.resolvedByteSize == fileSize) + } - /// The latency claim, and the reason a loopback origin cannot make it: against an origin whose - /// first byte costs two seconds, a cold open sits in `awaitFirstPersistentData` for them. A warm - /// open has the head already and must not wait at all. - @Test("a warm open does not wait for a first byte") - func warmOpenDoesNotWaitForFirstByte() async throws { - SourcePrewarmStore.shared.clear() - let slow = ThrottledOriginServer(totalSize: fileSize, - firstByteDelayUs: { _ in 2_000_000 }) - let server = try #require(slow) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - let started = Date() - try reader.open() - let openSeconds = Date().timeIntervalSince(started) - - #expect(openSeconds < 1.0, "the warm open still waited \(openSeconds)s for a first byte") - #expect(read(reader, 32 * 1024) == 32 * 1024) - } + /// The latency claim, and the reason a loopback origin cannot make it: against an origin whose + /// first byte costs two seconds, a cold open sits in `awaitFirstPersistentData` for them. A warm + /// open has the head already and must not wait at all. + @Test("a warm open does not wait for a first byte") + func warmOpenDoesNotWaitForFirstByte() async throws { + SourcePrewarmStore.shared.clear() + let slow = ThrottledOriginServer(totalSize: fileSize, + firstByteDelayUs: { _ in 2_000_000 }) + let server = try #require(slow) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + let started = Date() + try reader.open() + let openSeconds = Date().timeIntervalSince(started) + + #expect(openSeconds < 1.0, "the warm open still waited \(openSeconds)s for a first byte") + #expect(read(reader, 32 * 1024) == 32 * 1024) + } - /// A source that fits entirely inside the budget leaves nothing for a data connection to - /// fetch, so none is opened. The guard matters because a connection asked for the range past - /// the last byte is a 416, and the open would then look like a refusal. - @Test("a fully warmed source opens without any connection at all") - func fullyWarmedSourceOpensWithNoConnection() async throws { - SourcePrewarmStore.shared.clear() - let small: Int64 = 40 * 1024 - let server = try #require(ThrottledOriginServer(totalSize: small)) - defer { server.stop() } - try await warm(server, bytes: 1 << 20) - let warmRequests = server.rangeRequestCount - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() - #expect(read(reader, Int(small)) == Int32(small)) - - #expect(reader.resolvedByteSize == small) - #expect(server.rangeRequestCount == warmRequests, - "the open connected for a source it already held whole: \(server.requestedRanges)") - } + /// A source that fits entirely inside the budget leaves nothing for a data connection to + /// fetch, so none is opened. The guard matters because a connection asked for the range past + /// the last byte is a 416, and the open would then look like a refusal. + @Test("a fully warmed source opens without any connection at all") + func fullyWarmedSourceOpensWithNoConnection() async throws { + SourcePrewarmStore.shared.clear() + let small: Int64 = 40 * 1024 + let server = try #require(ThrottledOriginServer(totalSize: small)) + defer { server.stop() } + try await warm(server, bytes: 1 << 20) + let warmRequests = server.rangeRequestCount + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() + #expect(read(reader, Int(small)) == Int32(small)) + + #expect(reader.resolvedByteSize == small) + #expect(server.rangeRequestCount == warmRequests, + "the open connected for a source it already held whole: \(server.requestedRanges)") + } - /// A source nobody warmed keeps the cold path exactly as it was, byte for byte. - @Test("an unwarmed source still opens from byte zero") - func coldOpenIsUnchanged() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } + /// A source nobody warmed keeps the cold path exactly as it was, byte for byte. + @Test("an unwarmed source still opens from byte zero") + func coldOpenIsUnchanged() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() - #expect(server.requestedRanges.contains(where: { $0.start == 0 }), - "the cold open did not fetch from byte zero: \(server.requestedRanges)") - } + #expect(server.requestedRanges.contains(where: { $0.start == 0 }), + "the cold open did not fetch from byte zero: \(server.requestedRanges)") + } - /// Adoption is a take: a second session on the same URL opens cold rather than finding bytes - /// the first one is already holding in its own reader. - @Test("a second open on the same URL is cold again") - func adoptionIsOnce() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - - let first = AVIOReader(url: url(server)) - try first.open() - first.markClosed(); first.close() - let afterFirst = server.rangeRequestCount - - let second = AVIOReader(url: url(server)) - defer { second.markClosed(); second.close() } - try second.open() - - let opened = Array(server.requestedRanges.dropFirst(afterFirst)) - #expect(opened.contains(where: { $0.start == 0 }), - "the second open adopted bytes the first one had already taken: \(opened)") - } + /// Adoption is a take: a second session on the same URL opens cold rather than finding bytes + /// the first one is already holding in its own reader. + @Test("a second open on the same URL is cold again") + func adoptionIsOnce() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + + let first = AVIOReader(url: url(server)) + try first.open() + first.markClosed(); first.close() + let afterFirst = server.rangeRequestCount + + let second = AVIOReader(url: url(server)) + defer { second.markClosed(); second.close() } + try second.open() + + let opened = Array(server.requestedRanges.dropFirst(afterFirst)) + #expect(opened.contains(where: { $0.start == 0 }), + "the second open adopted bytes the first one had already taken: \(opened)") + } - /// The URL is only half the request. An origin that varies on Referer or Authorization answers - /// a different body under the same URL, and nothing about the bytes would show it, so a session - /// whose headers differ from the warm's opens cold rather than adopting someone else's response. - @Test("a warm fetched with different headers is not adopted") - func headerMismatchOpensCold() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - _ = await SourcePrewarmFetcher.warm(url: url(server), - extraHeaders: ["Referer": "http://portal.example/"], - byteBudget: warmBytes, into: .shared) - let warmRequests = server.rangeRequestCount - - let reader = AVIOReader(url: url(server)) // no headers: a different request - defer { reader.markClosed(); reader.close() } - try reader.open() - try await waitForRequest(server, startingAt: 0) - - let opened = Array(server.requestedRanges.dropFirst(warmRequests)) - #expect(opened.contains(where: { $0.start == 0 }), - "the open adopted a warm fetched under different headers: \(opened)") - } + /// The URL is only half the request. An origin that varies on Referer or Authorization answers + /// a different body under the same URL, and nothing about the bytes would show it, so a session + /// whose headers differ from the warm's opens cold rather than adopting someone else's response. + @Test("a warm fetched with different headers is not adopted") + func headerMismatchOpensCold() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + _ = await SourcePrewarmFetcher.warm(url: url(server), + extraHeaders: ["Referer": "http://portal.example/"], + byteBudget: warmBytes, into: .shared) + let warmRequests = server.rangeRequestCount + + let reader = AVIOReader(url: url(server)) // no headers: a different request + defer { reader.markClosed(); reader.close() } + try reader.open() + try await waitForRequest(server, startingAt: 0) + + let opened = Array(server.requestedRanges.dropFirst(warmRequests)) + #expect(opened.contains(where: { $0.start == 0 }), + "the open adopted a warm fetched under different headers: \(opened)") + } - /// The one adopted fact that could be wrong and could never be corrected: the size. The - /// write-once rule treats any positive `fileSize` as settled, so a warm that belongs to a - /// different response would fix a wrong EOF point for the whole session. The connection that is - /// actually serving the session gets to overrule it. - @Test("a connection that states a different size drops the warm", .timeLimit(.minutes(1))) - func sizeMismatchDropsTheWarm() async throws { - SourcePrewarmStore.shared.clear() - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - try await warm(server, bytes: warmBytes) - // The source is not what it was when it was warmed. - let restated: Int64 = 32 * 1024 * 1024 - server.setTotalSize(restated) - - let reader = AVIOReader(url: url(server)) - defer { reader.markClosed(); reader.close() } - try reader.open() - try await waitFor { reader.resolvedByteSize == restated } - - #expect(reader.resolvedByteSize == restated, - "the session kept the warm's size over the one its own connection stated") + /// The one adopted fact that could be wrong and could never be corrected: the size. The + /// write-once rule treats any positive `fileSize` as settled, so a warm that belongs to a + /// different response would fix a wrong EOF point for the whole session. The connection that is + /// actually serving the session gets to overrule it. + @Test("a connection that states a different size drops the warm", .timeLimit(.minutes(1))) + func sizeMismatchDropsTheWarm() async throws { + SourcePrewarmStore.shared.clear() + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + try await warm(server, bytes: warmBytes) + // The source is not what it was when it was warmed. + let restated: Int64 = 32 * 1024 * 1024 + server.setTotalSize(restated) + + let reader = AVIOReader(url: url(server)) + defer { reader.markClosed(); reader.close() } + try reader.open() + try await waitFor { reader.resolvedByteSize == restated } + + #expect(reader.resolvedByteSize == restated, + "the session kept the warm's size over the one its own connection stated") + } } } diff --git a/Tests/AetherEngineTests/SourcePrewarmFetcherTests.swift b/Tests/AetherEngineTests/SourcePrewarmFetcherTests.swift index 61a4fc159..d81f8c54e 100644 --- a/Tests/AetherEngineTests/SourcePrewarmFetcherTests.swift +++ b/Tests/AetherEngineTests/SourcePrewarmFetcherTests.swift @@ -2,173 +2,177 @@ import Testing import Foundation @testable import AetherEngine -/// #551: the fetch that fills the store, against an origin whose first byte costs something. -/// -/// `.serialized`: these share the process-wide prewarm store. They never reset the origin -/// budget, which is process-wide too: a global reset from here tore the budget out from under -/// suites running in parallel (measured, two unrelated failures), so a test that needs a ceiling -/// sets it for its own origin and clears that one again. -@Suite("Source prewarm fetch (#551)", .serialized) -struct SourcePrewarmFetcherTests { - - private let fileSize: Int64 = 64 * 1024 * 1024 - - private func url(_ server: ThrottledOriginServer) -> URL { - URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! - } - - @Test("a warm retains the budget it was given and the size the origin stated") - func warmRetainsBudget() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - - let report = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 256 * 1024, into: store) - - #expect(report.isWarm) - #expect(report.retainedBytes == 256 * 1024) - #expect(report.contentLength == fileSize) - #expect(report.declined == nil) - let warmed = try #require(store.take(for: url(server))) - #expect(warmed.head.start == 0) - #expect(warmed.head.data.count == 256 * 1024) - #expect(warmed.contentLength == fileSize) - } - - /// The body this origin serves is not an MP4, so the plan asks for no trailing object and the - /// warm costs exactly one request. A second one against a metered origin is the expensive - /// mistake this feature is not allowed to make by default. - @Test("a warm that needs no trailing object costs exactly one request") - func oneRequestWhenNoTailIsNeeded() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - - _ = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) - - #expect(server.rangeRequestCount == 1, "requests: \(server.requestedRanges)") - let asked = try #require(server.requestedRanges.first) - #expect(asked.start == 0) - #expect(asked.end == Int64(128 * 1024 - 1)) - } +extension PrewarmStoreSuites { + /// #551: the fetch that fills the store, against an origin whose first byte costs something. + /// + /// `.serialized`: these share the process-wide prewarm store. They never reset the origin + /// budget, which is process-wide too: a global reset from here tore the budget out from under + /// suites running in parallel (measured, two unrelated failures), so a test that needs a ceiling + /// sets it for its own origin and clears that one again. + @Suite("Source prewarm fetch (#551)", .serialized, .timeLimit(.minutes(2))) + struct SourcePrewarmFetcherTests { + + private let fileSize: Int64 = 64 * 1024 * 1024 + + private func url(_ server: ThrottledOriginServer) -> URL { + URL(string: "http://127.0.0.1:\(server.port)/movie.bin")! + } - /// An origin that ignores `Range` is about to send the whole source. The decision has to be - /// taken at the response header, not at the completion handler, or a prewarm of a 4 GB film - /// downloads the film (the shape #255 paid for once already). - @Test("an origin that ignores Range is declined at the header, and nothing is stored") - func rangeIgnoringOriginIsDeclined() async throws { - let refusing = ThrottledOriginServer(totalSize: fileSize, - respond: { _, _, _ in .status(200) }) - let server = try #require(refusing) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - - let report = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) - - #expect(!report.isWarm) - #expect(report.declined?.contains("200") == true) - #expect(store.retainedBytes == 0) - } + @Test("a warm retains the budget it was given and the size the origin stated") + func warmRetainsBudget() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + + let report = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 256 * 1024, into: store) + + #expect(report.isWarm) + #expect(report.retainedBytes == 256 * 1024) + #expect(report.contentLength == fileSize) + #expect(report.declined == nil) + let warmed = try #require(store.take(for: url(server))) + #expect(warmed.head.start == 0) + #expect(warmed.head.data.count == 256 * 1024) + #expect(warmed.contentLength == fileSize) + } - /// The arbitration rule: on an origin metered down to one request at a time, the prewarm is - /// not the request that gets to go. It declines without touching the network at all. - @Test("a serial origin gets no speculative request") - func serialOriginIsNotAsked() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - OriginRequestBudget.shared.setHostLimit(1, for: url(server)) - defer { OriginRequestBudget.shared.setHostLimit(nil, for: url(server)) } - - let report = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) - - #expect(!report.isWarm) - #expect(server.rangeRequestCount == 0, "a serial origin was asked anyway: \(server.requestedRanges)") - #expect(report.declined?.contains("#377") == true) - } + /// The body this origin serves is not an MP4, so the plan asks for no trailing object and the + /// warm costs exactly one request. A second one against a metered origin is the expensive + /// mistake this feature is not allowed to make by default. + @Test("a warm that needs no trailing object costs exactly one request") + func oneRequestWhenNoTailIsNeeded() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + + _ = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) + + #expect(server.rangeRequestCount == 1, "requests: \(server.requestedRanges)") + let asked = try #require(server.requestedRanges.first) + #expect(asked.start == 0) + #expect(asked.end == Int64(128 * 1024 - 1)) + } - /// A cancelled warm makes no promises: a host that starts playing something else must not find - /// half a source warm for a URL it has moved on from. - @Test("a cancelled warm stores nothing") - func cancelledWarmStoresNothing() async throws { - let stalling = ThrottledOriginServer(totalSize: fileSize, - firstByteDelayUs: { _ in 3_000_000 }) - let server = try #require(stalling) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - let target = url(server) - - let task = Task { - await SourcePrewarmFetcher.warm( - url: target, extraHeaders: [:], byteBudget: 128 * 1024, into: store) + /// An origin that ignores `Range` is about to send the whole source. The decision has to be + /// taken at the response header, not at the completion handler, or a prewarm of a 4 GB film + /// downloads the film (the shape #255 paid for once already). + @Test("an origin that ignores Range is declined at the header, and nothing is stored") + func rangeIgnoringOriginIsDeclined() async throws { + let refusing = ThrottledOriginServer(totalSize: fileSize, + respond: { _, _, _ in .status(200) }) + let server = try #require(refusing) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + + let report = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) + + #expect(!report.isWarm) + #expect(report.declined?.contains("200") == true) + #expect(store.retainedBytes == 0) } - try await Task.sleep(nanoseconds: 300_000_000) - task.cancel() - let report = await task.value - #expect(!report.isWarm) - #expect(store.retainedBytes == 0) - } + /// The arbitration rule: on an origin metered down to one request at a time, the prewarm is + /// not the request that gets to go. It declines without touching the network at all. + @Test("a serial origin gets no speculative request") + func serialOriginIsNotAsked() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + OriginRequestBudget.shared.setHostLimit(1, for: url(server)) + defer { OriginRequestBudget.shared.setHostLimit(nil, for: url(server)) } + + let report = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) + + #expect(!report.isWarm) + #expect(server.rangeRequestCount == 0, "a serial origin was asked anyway: \(server.requestedRanges)") + #expect(report.declined?.contains("#377") == true) + } - /// The budget is not a promise either: a source smaller than the budget warms whole, and the - /// span still has to describe what it actually holds. - @Test("a source smaller than the budget warms whole") - func smallSourceWarmsWhole() async throws { - let small: Int64 = 40 * 1024 - let server = try #require(ThrottledOriginServer(totalSize: small)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) + /// A cancelled warm makes no promises: a host that starts playing something else must not find + /// half a source warm for a URL it has moved on from. + @Test("a cancelled warm stores nothing") + func cancelledWarmStoresNothing() async throws { + let stalling = ThrottledOriginServer(totalSize: fileSize, + firstByteDelayUs: { _ in 30_000_000 }) + let server = try #require(stalling) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + let target = url(server) + + let task = Task { + await SourcePrewarmFetcher.warm( + url: target, extraHeaders: [:], byteBudget: 128 * 1024, into: store) + } + // Cancel once the fetch is on the wire, inside the stalled first byte. A fixed sleep here + // could outlast the stall on a loaded runner and let the warm complete. + try await waitFor { server.rangeRequestCount > 0 } + task.cancel() + let report = await task.value + + #expect(!report.isWarm) + #expect(store.retainedBytes == 0) + } - let report = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 1 << 20, into: store) + /// The budget is not a promise either: a source smaller than the budget warms whole, and the + /// span still has to describe what it actually holds. + @Test("a source smaller than the budget warms whole") + func smallSourceWarmsWhole() async throws { + let small: Int64 = 40 * 1024 + let server = try #require(ThrottledOriginServer(totalSize: small)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) - #expect(report.retainedBytes == Int(small)) - #expect(report.contentLength == small) - } + let report = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 1 << 20, into: store) - /// The other half of the runaway-download door. The 200 check stops an origin that ignores - /// `Range` outright; this stops the one that answers 206 with MORE than was asked for, which is - /// what an edge that rounds a range up to its own chunk boundary does. Without the check the - /// body is buffered to whatever the header claimed, which on a film is the film. - @Test("a 206 wider than the request is refused at the header") - func overServingOriginIsRefused() async throws { - let wide = ThrottledOriginServer(totalSize: fileSize, ignoreRangeEnd: true) - let server = try #require(wide) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - - let report = await SourcePrewarmFetcher.warm( - url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) - - #expect(!report.isWarm) - #expect(report.declined?.contains("asked for") == true, "declined: \(report.declined ?? "nil")") - #expect(store.retainedBytes == 0) - } + #expect(report.retainedBytes == Int(small)) + #expect(report.contentLength == small) + } - /// A warm whose task was cancelled before it ever ran must return, not hang. The cancellation - /// handler fires on the spot in that case, so the fetch can end before the caller has installed - /// the handler that resumes it, and an outcome dropped there would strand the caller forever - /// and hold the origin slot with it. - @Test("a warm that starts already cancelled returns instead of hanging") - func alreadyCancelledWarmReturns() async throws { - let server = try #require(ThrottledOriginServer(totalSize: fileSize)) - defer { server.stop() } - let store = SourcePrewarmStore(totalByteCap: 8 << 20) - let target = url(server) - - let task = Task { - while !Task.isCancelled { await Task.yield() } - return await SourcePrewarmFetcher.warm( - url: target, extraHeaders: [:], byteBudget: 128 * 1024, into: store) + /// The other half of the runaway-download door. The 200 check stops an origin that ignores + /// `Range` outright; this stops the one that answers 206 with MORE than was asked for, which is + /// what an edge that rounds a range up to its own chunk boundary does. Without the check the + /// body is buffered to whatever the header claimed, which on a film is the film. + @Test("a 206 wider than the request is refused at the header") + func overServingOriginIsRefused() async throws { + let wide = ThrottledOriginServer(totalSize: fileSize, ignoreRangeEnd: true) + let server = try #require(wide) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + + let report = await SourcePrewarmFetcher.warm( + url: url(server), extraHeaders: [:], byteBudget: 128 * 1024, into: store) + + #expect(!report.isWarm) + #expect(report.declined?.contains("asked for") == true, "declined: \(report.declined ?? "nil")") + #expect(store.retainedBytes == 0) } - task.cancel() - let report = await task.value - #expect(!report.isWarm) - #expect(store.retainedBytes == 0) + /// A warm whose task was cancelled before it ever ran must return, not hang. The cancellation + /// handler fires on the spot in that case, so the fetch can end before the caller has installed + /// the handler that resumes it, and an outcome dropped there would strand the caller forever + /// and hold the origin slot with it. + @Test("a warm that starts already cancelled returns instead of hanging") + func alreadyCancelledWarmReturns() async throws { + let server = try #require(ThrottledOriginServer(totalSize: fileSize)) + defer { server.stop() } + let store = SourcePrewarmStore(totalByteCap: 8 << 20) + let target = url(server) + + let task = Task { + while !Task.isCancelled { await Task.yield() } + return await SourcePrewarmFetcher.warm( + url: target, extraHeaders: [:], byteBudget: 128 * 1024, into: store) + } + task.cancel() + let report = await task.value + + #expect(!report.isWarm) + #expect(store.retainedBytes == 0) + } } } diff --git a/Tests/AetherEngineTests/SpatialAudioBridgeTests.swift b/Tests/AetherEngineTests/SpatialAudioBridgeTests.swift index f03f6fc53..cdd29532a 100644 --- a/Tests/AetherEngineTests/SpatialAudioBridgeTests.swift +++ b/Tests/AetherEngineTests/SpatialAudioBridgeTests.swift @@ -155,6 +155,23 @@ struct SpatialAudioBridgeTests { #expect(HLSVideoEngine.spatialRenderingLayout(rendering: .off, codecID: AV_CODEC_ID_TRUEHD, profile: 30, sampleRate: 48_000) == nil) } + @Test("every 48 kHz DTS-HD MA track is a DTS:X candidate, whatever FFmpeg's label; lossy DTS is not") + func dtsEligibility() { + let on = ObjectAudioRendering.apac(.l714) + // FFmpeg names only two of DTS:X's markers, so a plain DTS-HD MA label can still be DTS:X; + // LibDTSX decides on the track's first frames. + for profile in [AV_PROFILE_DTS_HD_MA, AV_PROFILE_DTS_HD_MA_X, AV_PROFILE_DTS_HD_MA_X_IMAX] { + #expect(HLSVideoEngine.spatialRenderingLayout(rendering: on, codecID: AV_CODEC_ID_DTS, profile: profile, sampleRate: 48_000) == .l714) + #expect(HLSVideoEngine.objectAudioSource(codecID: AV_CODEC_ID_DTS, profile: profile) == .dtsHDMasterAudio) + } + for profile in [AV_PROFILE_DTS, AV_PROFILE_DTS_ES, AV_PROFILE_DTS_HD_HRA, AV_PROFILE_DTS_EXPRESS] { + #expect(HLSVideoEngine.spatialRenderingLayout(rendering: on, codecID: AV_CODEC_ID_DTS, profile: profile, sampleRate: 48_000) == nil) + } + #expect(HLSVideoEngine.spatialRenderingLayout(rendering: on, codecID: AV_CODEC_ID_DTS, profile: AV_PROFILE_DTS_HD_MA_X, sampleRate: 96_000) == nil) + #expect(HLSVideoEngine.spatialRenderingLayout(rendering: .off, codecID: AV_CODEC_ID_DTS, profile: AV_PROFILE_DTS_HD_MA_X, sampleRate: 48_000) == nil) + #expect(HLSVideoEngine.objectAudioSource(codecID: AV_CODEC_ID_TRUEHD, profile: 30) == .trueHDAtmos) + } + @Test("the first packet sits at the source position of the first decodable frame, and steps by 1024") func anchorsOnSource() throws { guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } @@ -250,6 +267,89 @@ struct SpatialAudioBridgeTests { #expect(emitted > 0, "the decoder found its sync and the bridge encoded") } + /// The encoder runs on its own queue, so a feed returns what earlier chunks encoded. Settled + /// before every cut, the split is the one a synchronous encode makes. + @Test("settled after every feed, the bridge returns a synchronous encode's packets at each point") + func settleRestoresTheSynchronousSplit() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let pipelined = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: ClickDecoder(clickFrame: 30_000)) + let settledEachFeed = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: ClickDecoder(clickFrame: 30_000)) + defer { pipelined.close(); settledEachFeed.close() } + func take(_ packets: [UnsafeMutablePointer]) -> [(pts: Int64, data: Data)] { + packets.map { fp in + defer { var p: UnsafeMutablePointer? = fp; trackedPacketFree(&p) } + return (fp.pointee.pts, Data(bytes: fp.pointee.data, count: Int(fp.pointee.size))) + } + } + func feedOne(_ bridge: SpatialAudioBridge, ms: Int64) throws -> [(pts: Int64, data: Data)] { + let pkt = av_packet_alloc()! + defer { var p: UnsafeMutablePointer? = pkt; av_packet_free(&p) } + _ = av_new_packet(pkt, 24) + pkt.pointee.pts = ms + pkt.pointee.dts = ms + return take(try bridge.feed(packet: pkt)) + } + var a: [(pts: Int64, data: Data)] = [], b: [(pts: Int64, data: Data)] = [] + for round in 0..<4 { + for i in 0..<25 { + let ms = Int64(round * 25 + i) * 20 + a += try feedOne(pipelined, ms: ms) + b += try feedOne(settledEachFeed, ms: ms) + take(settledEachFeed.settle()) + } + a += take(pipelined.settle()) + #expect(a.map(\.pts) == b.map(\.pts), "after a cut both hold the same packets") + } + a += take(pipelined.flush()) + b += take(settledEachFeed.flush()) + #expect(!a.isEmpty) + #expect(a.map(\.pts) == b.map(\.pts)) + #expect(a.map(\.data) == b.map(\.data)) + } + + /// Like `ClickDecoder`, but returns nothing after a reset until the bridge asks for what it + /// holds, as the TrueHD decoder does while it waits for the first object metadata. + final class HoldingDecoder: ObjectAudioDecoding { + private let inner = ClickDecoder(clickFrame: 30_000) + private var holding = true + private(set) var releases = 0 + + func push(_ bytes: UnsafeRawBufferPointer) throws { try inner.push(bytes) } + func nextBlock() throws -> ObjectAudioDecodedBlock? { holding ? nil : try inner.nextBlock() } + func reset() { inner.reset(); holding = true } + func releaseHeldBlocks() { releases += 1; holding = false } + } + + /// A cut settles the bridge, and what the decoder holds plays before that cut, so the hold moves + /// no audio into the next segment. + @Test("a cut releases what the decoder holds, so it splits as a decoder without a hold does") + func settleReleasesHeldBlocks() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let holding = HoldingDecoder() + let held = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: holding) + let plain = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: ClickDecoder(clickFrame: 30_000)) + defer { held.close(); plain.close() } + func take(_ packets: [UnsafeMutablePointer]) -> [(pts: Int64, data: Data)] { + packets.map { fp in + defer { var p: UnsafeMutablePointer? = fp; trackedPacketFree(&p) } + return (fp.pointee.pts, Data(bytes: fp.pointee.data, count: Int(fp.pointee.size))) + } + } + var a = try feed(held, startMs: 0, count: 25).map(\.pts) + var b = try feed(plain, startMs: 0, count: 25).map(\.pts) + a += take(held.settle()).map(\.pts) + b += take(plain.settle()).map(\.pts) + #expect(!b.isEmpty) + #expect(a == b, "after the cut both carry the same packets") + #expect(holding.releases == 1) + a += try feed(held, startMs: 500, count: 25).map(\.pts) + take(held.flush()).map(\.pts) + b += try feed(plain, startMs: 500, count: 25).map(\.pts) + take(plain.flush()).map(\.pts) + #expect(a == b) + } + @Test("a producer restart re-anchors on the new position") func restartReanchors() throws { guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } @@ -342,6 +442,21 @@ struct SpatialAudioBridgeTests { return (try #require(initBytes), segment, sessionDir) } + @Test("the Atmos output activator's bundled stream reads as E-AC-3 with the Atmos extension") + @MainActor + func silentAtmosStreamIsAtmos() async throws { + let asset = AVURLAsset(url: AtmosOutputActivator.silentAtmosStream) + let track = try #require(try await asset.loadTracks(withMediaType: .audio).first) + let format = try #require(try await track.load(.formatDescriptions).first) + // AVFoundation lists an E-AC-3 track whose dec3 box states the Atmos extension as 'ec+3' + // layers (objects first) over its 'ec-3' core. + var size = 0 + let list = try #require(CMAudioFormatDescriptionGetFormatList(format, sizeOut: &size)) + #expect(size >= MemoryLayout.size) + #expect(list[0].mASBD.mFormatID == 0x6563_2B33) + #expect(CMFormatDescriptionGetMediaSubType(format) == kAudioFormatEnhancedAC3) + } + @Test("movenc muxes the stand-in and the init segment carries the real apac entry") func muxedInitCarriesAPAC() throws { guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } @@ -561,3 +676,118 @@ struct BedLevelMeterTests { #expect(BedLevelMeter.configurationSummary([.bed(.left), .bed(.right), .object]) == "beds L R + no LFE + 1 objects") } } + +extension SpatialAudioBridgeTests { + // MARK: - Review round 1 of the bridge (#731) + + /// Contiguous like `ClickDecoder`, but at push `panicAt` it fails the way the real one does on a + /// caught panic: the push throws, the decoder resets itself, and its offsets start from zero. + final class SelfResettingDecoder: ObjectAudioDecoding { + let panicAt: Int + private var pushes = 0 + private var inputFrames: Int64 = 0 + private var blocks: [(offset: Int64, frames: Int)] = [] + private let plane = UnsafeMutablePointer.allocate(capacity: 1 << 16) + private(set) var selfResetCount = 0 + struct Panic: Error {} + + init(panicAt: Int) { self.panicAt = panicAt; plane.initialize(repeating: 0.1, count: 1 << 16) } + deinit { plane.deallocate() } + + func push(_ bytes: UnsafeRawBufferPointer) throws { + pushes += 1 + if pushes == panicAt { + inputFrames = 0; blocks = []; selfResetCount += 1 + throw Panic() + } + blocks.append((inputFrames, bytes.count * 40)) + inputFrames += Int64(bytes.count * 40) + } + + func nextBlock() throws -> ObjectAudioDecodedBlock? { + guard !blocks.isEmpty else { return nil } + let b = blocks.removeFirst() + return ObjectAudioDecodedBlock( + sampleRate: 48_000, frameCount: b.frames, inputFrameOffset: b.offset, + configurationGeneration: 0, roles: [.bed(.left)], planes: [UnsafePointer(plane)], updates: []) + } + + func reset() { inputFrames = 0; blocks = [] } + } + + /// Decodes fine at a rate the renderer refuses, so every block throws. + final class WrongRateDecoder: ObjectAudioDecoding { + private var pending = 0 + private let plane = UnsafeMutablePointer.allocate(capacity: 4096) + deinit { plane.deallocate() } + func push(_ bytes: UnsafeRawBufferPointer) throws { pending += 1 } + func nextBlock() throws -> ObjectAudioDecodedBlock? { + guard pending > 0 else { return nil } + pending -= 1 + return ObjectAudioDecodedBlock( + sampleRate: 44_100, frameCount: 40, inputFrameOffset: 0, configurationGeneration: 0, + roles: [.bed(.left)], planes: [UnsafePointer(plane)], updates: []) + } + func reset() { pending = 0 } + } + + private func drain(_ bridge: some AudioTranscodingBridge) -> [Int64] { + bridge.flush().map { fp in + defer { var p: UnsafeMutablePointer? = fp; trackedPacketFree(&p) } + return fp.pointee.pts + } + } + + @Test("after the decoder resets itself mid-stream, later audio keeps its source position") + func selfResetReanchors() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let bridge = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: SelfResettingDecoder(panicAt: 50)) + defer { bridge.close() } + // 100 packets of 20 ms from 1 s. Packet 50 is lost to the panic; its 960 frames come back as + // silence, so the stream is as long as an unbroken one. Appended onto the encoder instead, + // everything after the panic would play 20 ms early and the stream would end a packet short. + let packets = try feed(bridge, startMs: 1000, count: 100).map(\.pts) + drain(bridge) + #expect(packets.first == 48_000) + #expect(zip(packets, packets.dropFirst()).allSatisfy { $1 - $0 == 1024 }) + #expect(packets.count == 2 + Int((Double(96_000) / 1024).rounded(.up))) + } + + @Test("a seek after the end of the file anchors on the new position") + func seekAfterEOF() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let bridge = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: ClickDecoder(clickFrame: .max)) + defer { bridge.close() } + _ = try feed(bridge, startMs: 0, count: 50) + _ = drain(bridge) + bridge.startSegment() + let after = try feed(bridge, startMs: 5000, count: 50) + #expect(after.first?.pts == 240_000, "5 s at 48 kHz") + #expect(!after.isEmpty) + } + + @Test("a bridge whose every feed fails is reported once and never throws at the producer") + func persistentFailureReportedOnce() throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let bridge = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: .l714, decoder: WrongRateDecoder()) + defer { bridge.close() } + let reports = Reports() + bridge.onDecoderProducedNothing = { _ in reports.add() } + let out = try feed(bridge, startMs: 0, count: SpatialAudioBridge.silentFeedPacketThreshold * 2 + 5) + #expect(out.isEmpty) + #expect(reports.value == 1) + } + + @Test("the master's CHANNELS counts the bed, not the 2-channel stand-in the muxer is given", + arguments: [SpatialSpeakerLayout.l714, .l916]) + func servedChannelsAreTheBeds(layout: SpatialSpeakerLayout) throws { + guard #available(macOS 26.0, iOS 26.0, tvOS 26.0, visionOS 26.0, *) else { return } + let bridge = try SpatialAudioBridge( + srcTimeBase: AVRational(num: 1, den: 1000), layout: layout, decoder: ClickDecoder(clickFrame: .max)) + defer { bridge.close() } + #expect(bridge.encoderCodecpar?.pointee.ch_layout.nb_channels == 2) + #expect(bridge.servedChannelCount == layout.channelCount) + } +} diff --git a/Tests/AetherEngineTests/SpatialObjectRenderingTests.swift b/Tests/AetherEngineTests/SpatialObjectRenderingTests.swift index 5f65aad8e..b5335b024 100644 --- a/Tests/AetherEngineTests/SpatialObjectRenderingTests.swift +++ b/Tests/AetherEngineTests/SpatialObjectRenderingTests.swift @@ -44,6 +44,37 @@ struct SpatialObjectRenderingTests { } } + @Test("ceiling speakers sit a quarter of the room in from the walls, as TS 103 448 places them") + func ceilingTargetsAreInset() { + let layout = SpatialSpeakerLayout.l714 + let panner = AllocentricPanner(layout: layout) + let channel = { (speaker: SpatialSpeaker) in layout.speakers.firstIndex(of: speaker)! } + var gains: [Float] = [] + // Out at the front-left ceiling corner, beyond the targets: the nearest top alone. + panner.pointGains(SIMD3(0, 0, 1), into: &gains) + #expect(abs(gains[channel(.topFrontLeft)] - 1) < 1e-5) + // A third of the way back: mostly the front tops (93%), where corner targets gave 75%. + panner.pointGains(SIMD3(0.5, 1 / 3, 1), into: &gains) + let front = power([gains[channel(.topFrontLeft)], gains[channel(.topFrontRight)]]) + #expect(abs(front - 0.933) < 0.001) + } + + @Test("a 5.1 layout's surrounds sit halfway down the side walls, as TS 103 448 places them", + arguments: [SpatialSpeakerLayout.l512, .l514]) + func fiveOneSurroundsOnTheSideWalls(layout: SpatialSpeakerLayout) { + let panner = AllocentricPanner(layout: layout) + let channel = { (speaker: SpatialSpeaker) in layout.speakers.firstIndex(of: speaker)! } + var gains: [Float] = [] + // Halfway down the left wall, and at the back-left corner beyond it: the surround alone. + for y: Float in [0.5, 1] { + panner.pointGains(SIMD3(0, y, 0), into: &gains) + #expect(abs(gains[channel(.surroundLeft)] - 1) < 1e-5) + } + // A quarter of the way back: an even split with the front, where corner surrounds gave 15%. + panner.pointGains(SIMD3(0, 0.25, 0), into: &gains) + #expect(abs(gains[channel(.surroundLeft)] * gains[channel(.surroundLeft)] - 0.5) < 1e-5) + } + @Test("height content with no ceiling to go to folds onto the floor") func heightFoldsWithoutTops() { let layout = SpatialSpeakerLayout.l714 @@ -193,4 +224,124 @@ struct SpatialObjectRenderingTests { #expect(abs(out[l][49] - 0.51) < 0.02 && out[r][49] > 0.4) #expect(out[l][50] == 1 && out[r][50] == 0) } + + // MARK: - Review round 1 (#731) + + @Test("a ramp lands frame by frame on (k + 1) / total of the way, and finishes on the target") + func rampIsExactPerFrame() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.object]) + let ones = [Float](repeating: 1, count: 100) + let l = layout.speakers.firstIndex(of: .left)!, r = layout.speakers.firstIndex(of: .right)! + _ = render(renderer, inputs: [ones], frames: 100, updates: [ + .init(frameOffset: 0, rampFrames: 0, states: [ObjectAudioElementState(position: SIMD3(0, 0, 0))])]) + // Spread over three blocks of 40 frames, so the ramp crosses two block boundaries. + var left: [Float] = [], right: [Float] = [] + for block in 0..<3 { + let updates: [ObjectAudioMetadataUpdate] = block == 0 + ? [.init(frameOffset: 0, rampFrames: 100, states: [ObjectAudioElementState(position: SIMD3(1, 0, 0))])] + : [] + let out = render(renderer, inputs: [[Float](repeating: 1, count: 40)], frames: 40, updates: updates) + left += out[l]; right += out[r] + } + for k in 0..<100 { + let t = Float(k + 1) / 100 + #expect(abs(left[k] - (1 - t)) < 1e-5, "frame \(k)") + #expect(abs(right[k] - t) < 1e-5, "frame \(k)") + } + #expect(left[100...].allSatisfy { abs($0) < 1e-6 } && right[100...].allSatisfy { abs($0 - 1) < 1e-6 }) + } + + @Test("a resync mid-ramp freezes the object where the ramp had got to") + func discontinuityMidRampHolds() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.object]) + let ones = [Float](repeating: 1, count: 50) + let l = layout.speakers.firstIndex(of: .left)!, r = layout.speakers.firstIndex(of: .right)! + _ = render(renderer, inputs: [ones], frames: 50, updates: [ + .init(frameOffset: 0, rampFrames: 0, states: [ObjectAudioElementState(position: SIMD3(0, 0, 0))]), + .init(frameOffset: 0, rampFrames: 100, states: [ObjectAudioElementState(position: SIMD3(1, 0, 0))])]) + renderer.markDiscontinuity() + let out = render(renderer, inputs: [ones], frames: 50, updates: []) + #expect(abs(out[l][0] - 0.5) < 1e-5 && abs(out[l][49] - 0.5) < 1e-5) + #expect(abs(out[r][0] - 0.5) < 1e-5 && abs(out[r][49] - 0.5) < 1e-5) + } + + @Test("a reset in the middle of a bed fade brings the bed back at unit gain") + func resetRestoresBedGain() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.bed(.left)]) + let ones = [Float](repeating: 1, count: 50) + let l = layout.speakers.firstIndex(of: .left)! + _ = render(renderer, inputs: [ones], frames: 50, updates: [ + .init(frameOffset: 0, rampFrames: 100, states: [ObjectAudioElementState(gain: 0)])]) + renderer.reset() + let out = render(renderer, inputs: [ones], frames: 50, updates: []) + #expect(out[l].allSatisfy { $0 == 1 }) + } + + @Test("a block from another configuration renders silence instead of trapping") + func configurationMismatchIsSilent() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.bed(.left), .bed(.right)]) + let out = render(renderer, inputs: [[Float](repeating: 1, count: 32)], frames: 32, updates: []) + #expect(out.allSatisfy { $0.allSatisfy { $0 == 0 } }) + } + + @Test("7.1 bed surrounds fold onto a 5.1 layout's surround pair, never into the front", arguments: [ + SpatialSpeakerLayout.l512, .l514]) + func bedSurroundsFoldOnFiveOne(layout: SpatialSpeakerLayout) { + let renderer = ObjectAudioRenderer( + layout: layout, roles: [.bed(.sideLeft), .bed(.rearRight)]) + let ones = [Float](repeating: 1, count: 16) + let zeros = [Float](repeating: 0, count: 16) + var out = render(renderer, inputs: [ones, zeros], frames: 16, updates: []) + #expect(out[layout.speakers.firstIndex(of: .surroundLeft)!] == ones) + #expect(out[layout.speakers.firstIndex(of: .left)!] == zeros) + out = render(renderer, inputs: [zeros, ones], frames: 16, updates: []) + #expect(out[layout.speakers.firstIndex(of: .surroundRight)!] == ones) + #expect(out[layout.speakers.firstIndex(of: .right)!] == zeros) + } + + @Test("a 5.1 bed's surrounds land on a 7.1 layout's sides") + func fiveOneSurroundsOnSevenOne() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.bed(.surroundLeft)]) + let ones = [Float](repeating: 1, count: 16) + let out = render(renderer, inputs: [ones], frames: 16, updates: []) + #expect(out[layout.speakers.firstIndex(of: .sideLeft)!] == ones) + } + + @Test("a bed channel at a position the room names no speaker for plays without any metadata") + func fixedBedPlaysWithoutMetadata() { + let layout = SpatialSpeakerLayout.l714 + let renderer = ObjectAudioRenderer(layout: layout, roles: [.fixed(SIMD3(0.5, 1, 0))]) + let ones = [Float](repeating: 1, count: 16) + let out = render(renderer, inputs: [ones], frames: 16, updates: []) + let half = cos(Float.pi / 4) + #expect(abs(out[layout.speakers.firstIndex(of: .rearLeft)!][0] - half) < 1e-5) + #expect(abs(out[layout.speakers.firstIndex(of: .rearRight)!][0] - half) < 1e-5) + #expect(abs(power(out.map { $0[0] }) - 1) < 1e-5) + } + + @Test("objects keep unit power with size and every zone mask, on every layout", + arguments: SpatialSpeakerLayout.allCases) + func unitPowerWithSizeAndZones(layout: SpatialSpeakerLayout) { + let masks: [Set] = [ + [], [.rearLeft, .rearRight, .surroundLeft, .surroundRight], [.sideLeft, .sideRight, .wideLeft, .wideRight], + [.left, .right, .wideLeft, .wideRight, .sideLeft, .sideRight], + Set(SpatialSpeaker.allCases.filter(\.isHeight)), + ] + var gains: [Float] = [] + for mask in masks { + let panner = AllocentricPanner(layout: layout, excluded: mask) + for size: Float in [0, 0.1, 0.5, 1] { + for p in [SIMD3(0.1, 0.9, 0.7), SIMD3(0.5, 0.5, 0), SIMD3(1, 0, 1)] { + panner.objectGains(position: p, size: size, snap: false, into: &gains) + #expect(abs(power(gains) - 1) < 1e-4, "\(layout.rawValue) size \(size) at \(p)") + #expect(gains[layout.lfeIndex] == 0) + } + } + } + } } diff --git a/Tests/AetherEngineTests/StreamingBufferTrimTests.swift b/Tests/AetherEngineTests/StreamingBufferTrimTests.swift index 22c970bf3..805b33cde 100644 --- a/Tests/AetherEngineTests/StreamingBufferTrimTests.swift +++ b/Tests/AetherEngineTests/StreamingBufferTrimTests.swift @@ -77,7 +77,10 @@ struct StreamingBufferTrimTests { after = reader.streamChunkAddressesForTesting } #expect(after.count < before.count, "the trim released nothing before the body ended") - #expect(after.count > 1) + // One kept chunk is enough for the address check below. Asking for two made the result + // depend on how URLSession cut the body, which a loaded machine coalesces into fewer chunks: + // a release at the first boundary then leaves exactly one (measured, `after.count -> 1`). + #expect(!after.isEmpty, "the trim released the chunk the read position is in") #expect(Array(before.suffix(after.count)) == after, "a trim reallocated the chunks it kept: the buffer was copied, not sliced") } diff --git a/Tests/AetherEngineTests/SupersededProducerReportTests.swift b/Tests/AetherEngineTests/SupersededProducerReportTests.swift index 982880e6c..9e5fea04f 100644 --- a/Tests/AetherEngineTests/SupersededProducerReportTests.swift +++ b/Tests/AetherEngineTests/SupersededProducerReportTests.swift @@ -9,7 +9,7 @@ import AetherLibavutil /// superseded restart rewrote the epoch table, the delayed #377 revive re-anchored the producer that /// had replaced the dead one, and a re-cut lost its mark to the seek's 2 s wait while the restart it /// marked was still running. -@Suite("A superseded producer leaves the current session alone", .serialized) +@Suite("A superseded producer leaves the current session alone", .serialized, .offCooperativePool) struct SupersededProducerReportTests { private final class Session { diff --git a/Tests/AetherEngineTests/SupersededPumpExitTests.swift b/Tests/AetherEngineTests/SupersededPumpExitTests.swift index 2bdfe787d..bea6553ea 100644 --- a/Tests/AetherEngineTests/SupersededPumpExitTests.swift +++ b/Tests/AetherEngineTests/SupersededPumpExitTests.swift @@ -9,6 +9,34 @@ import AetherLibavutil /// arms: no revive-gate spend, no seek-state or failure signal to the host. @Suite("Superseded pump exit") struct SupersededPumpExitTests { + @Test("host retry preserves the session and coalesces before stop revokes it") + func retainedRecoveryCanResumeWithoutReplacingCache() throws { + var codecpar: UnsafeMutablePointer? = avcodec_parameters_alloc() + defer { avcodec_parameters_free(&codecpar) } + codecpar!.pointee.codec_id = AV_CODEC_ID_H264 + codecpar!.pointee.codec_type = AVMEDIA_TYPE_VIDEO + let engine = HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/live.ts"), + dvModeAvailable: false, isLiveSession: true) + let producer = try makeProducer(codecpar: codecpar!) + let cache = SegmentCache(forwardWindow: 4, backwardWindow: 4) + engine.producer = producer + engine.cache = cache + let calls = Recorder() + engine.onLiveSourceReopening = { calls.seek() } + #expect(!engine.retryLiveSourceRecovery(), "unrelated source loss cannot masquerade as retained replay") + engine.liveRecoveryHasVerifiedReplay = true + engine.barrenReopenCycles = 3 + #expect(engine.retryLiveSourceRecovery()) + #expect(engine.retryLiveSourceRecovery()) + #expect(calls.seekSignals == 1, "duplicate calls cannot launch another source connection") + #expect(engine.cache === cache) + #expect(engine.producer === producer) + #expect(engine.barrenReopenCycles == 0) + #expect(engine.liveRecoveryProducer === producer) + engine.stop() + #expect(!engine.retryLiveSourceRecovery(), "a stopped session cannot reopen") + #expect(engine.liveRecoveryProducer == nil) + } private final class Recorder: @unchecked Sendable { private let lock = NSLock() @@ -65,6 +93,75 @@ struct SupersededPumpExitTests { #expect(recorder.seekSignals == 0) } + @Test("a replay exit retunes only the current producer, never a superseded channel") + func replayExitRequiresCurrentProducer() throws { + var codecpar: UnsafeMutablePointer? = try #require(avcodec_parameters_alloc()) + defer { avcodec_parameters_free(&codecpar) } + codecpar!.pointee.codec_id = AV_CODEC_ID_H264 + codecpar!.pointee.codec_type = AVMEDIA_TYPE_VIDEO + let recorder = Recorder() + let engine = HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/live.ts"), + dvModeAvailable: false, isLiveSession: true, sourceReopenableByURL: false) + engine.onLiveSourceReset = { recorder.fail() } + let stale = try makeProducer(codecpar: codecpar!) + let current = try makeProducer(codecpar: codecpar!) + engine.producer = current + engine.handlePumpFinished(stale, reason: .sourceReplay) + #expect(recorder.failures == 0) + engine.handlePumpFinished(current, reason: .sourceReplay) + #expect(recorder.failures == 1, "the current session still requests fresh negotiation") + engine.producer = nil + engine.handlePumpFinished(current, reason: .sourceReplay) + #expect(recorder.failures == 1, "a torn-down session cannot retune its successor") + } + + @Test("verified replay exhaustion cannot silently request a reload that loses its history") + func replayExhaustionHasSeparateHostEvidence() throws { + var codecpar: UnsafeMutablePointer? = try #require(avcodec_parameters_alloc()) + defer { avcodec_parameters_free(&codecpar) } + codecpar!.pointee.codec_id = AV_CODEC_ID_H264 + codecpar!.pointee.codec_type = AVMEDIA_TYPE_VIDEO + let resets = Recorder(), rejected = Recorder() + let engine = HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/live.ts"), + dvModeAvailable: false, isLiveSession: true, sourceReopenableByURL: false) + engine.onLiveSourceReset = { resets.fail() } + engine.onLiveSourceReplayExhausted = { rejected.fail() } + let producer = try makeProducer(codecpar: codecpar!) + engine.producer = producer + engine.handlePumpFinished(producer, reason: .sourceReplay) + #expect(rejected.failures == 1) + #expect(resets.failures == 0) + engine.producer = nil + engine.handlePumpFinished(producer, reason: .sourceReplay) + #expect(rejected.failures == 1, "a retired source cannot fail its successor") + + engine.liveRecoveryHasVerifiedReplay = true + engine.escalateLiveReopenExhaustion(transport: .url) + #expect(rejected.failures == 2, "an open failure after verified replay must not bypass history either") + #expect(resets.failures == 0) + engine.escalateLiveReopenExhaustion(transport: .url, replayRejected: false) + #expect(resets.failures == 1, "a changed track layout still requests fresh negotiation") + } + + @Test("without a host that owns the retry, exhausted replay is a source reset") + func replayExhaustionFallsBackToSourceReset() throws { + var codecpar: UnsafeMutablePointer? = try #require(avcodec_parameters_alloc()) + defer { avcodec_parameters_free(&codecpar) } + codecpar!.pointee.codec_id = AV_CODEC_ID_H264 + codecpar!.pointee.codec_type = AVMEDIA_TYPE_VIDEO + let resets = Recorder() + let engine = HLSVideoEngine(url: URL(fileURLWithPath: "/nonexistent/live.ts"), + dvModeAvailable: false, isLiveSession: true, sourceReopenableByURL: false) + engine.onLiveSourceReset = { resets.fail() } + let producer = try makeProducer(codecpar: codecpar!) + engine.producer = producer + engine.handlePumpFinished(producer, reason: .sourceReplay) + #expect(resets.failures == 1, "a host that only knows liveSourceReset must still be told to retune") + engine.liveRecoveryHasVerifiedReplay = true + engine.escalateLiveReopenExhaustion(transport: .url) + #expect(resets.failures == 2) + } + @Test("the same read error from the session's own producer still reaches the recovery arms") func currentReadErrorIsHandled() throws { var codecpar: UnsafeMutablePointer? = try #require(avcodec_parameters_alloc()) diff --git a/Tests/AetherEngineTests/Support/CannedHTTPOrigin.swift b/Tests/AetherEngineTests/Support/CannedHTTPOrigin.swift index 9df0920f7..8d57b41e3 100644 --- a/Tests/AetherEngineTests/Support/CannedHTTPOrigin.swift +++ b/Tests/AetherEngineTests/Support/CannedHTTPOrigin.swift @@ -18,7 +18,7 @@ final class CannedHTTPOrigin: @unchecked Sendable { } let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let lock = NSLock() private var _routes: [String: Answer] = [:] private var _requests: [Request] = [] @@ -26,34 +26,10 @@ final class CannedHTTPOrigin: @unchecked Sendable { private var _stopped = false init?() { - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var address = sockaddr_in() - address.sin_family = sa_family_t(AF_INET) - address.sin_port = 0 - address.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 16) == 0 else { - close(fd) - return nil - } - var length = socklen_t(MemoryLayout.size) - let named = withUnsafeMutablePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &length) } - } - guard named == 0 else { - close(fd) - return nil - } - listenFD = fd - port = UInt16(bigEndian: address.sin_port) - Thread.detachNewThread { [self] in acceptLoop() } + guard let listener = LoopbackListener(backlog: 16) else { return nil } + self.listener = listener + port = listener.port + listener.start { [self] fd in admit(fd) } } var baseURL: String { "http://127.0.0.1:\(port)" } @@ -73,26 +49,20 @@ final class CannedHTTPOrigin: @unchecked Sendable { for fd in _connections { shutdown(fd, SHUT_RDWR) } lock.unlock() guard !alreadyStopped else { return } - shutdown(listenFD, SHUT_RDWR) - close(listenFD) + listener.stop() } - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - if fd < 0 { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - lock.lock() - if _stopped { - lock.unlock() - close(fd) - return - } - _connections.insert(fd) + private func admit(_ fd: Int32) -> Bool { + lock.lock() + if _stopped { lock.unlock() - Thread.detachNewThread { [self] in serve(fd) } + close(fd) + return false } + _connections.insert(fd) + lock.unlock() + Thread.detachNewThread { [self] in serve(fd) } + return true } private func serve(_ fd: Int32) { diff --git a/Tests/AetherEngineTests/Support/KeepAliveRangeOrigin.swift b/Tests/AetherEngineTests/Support/KeepAliveRangeOrigin.swift index b06fbc4e5..c6d8c3269 100644 --- a/Tests/AetherEngineTests/Support/KeepAliveRangeOrigin.swift +++ b/Tests/AetherEngineTests/Support/KeepAliveRangeOrigin.swift @@ -7,7 +7,7 @@ import Foundation /// session has no public liveness and the origin is the one party that sees the socket. final class KeepAliveRangeOrigin: @unchecked Sendable { let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener private let data: Data private let lock = NSLock() private var connections: Set = [] @@ -16,34 +16,10 @@ final class KeepAliveRangeOrigin: @unchecked Sendable { init?(data: Data) { self.data = data - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - var address = sockaddr_in() - address.sin_family = sa_family_t(AF_INET) - address.sin_port = 0 - address.sin_addr.s_addr = inet_addr("127.0.0.1") - let bound = withUnsafePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } - guard bound == 0, listen(fd, 16) == 0 else { - close(fd) - return nil - } - var length = socklen_t(MemoryLayout.size) - let named = withUnsafeMutablePointer(to: &address) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &length) } - } - guard named == 0 else { - close(fd) - return nil - } - listenFD = fd - port = UInt16(bigEndian: address.sin_port) - Thread.detachNewThread { [self] in acceptLoop() } + guard let listener = LoopbackListener(backlog: 16) else { return nil } + self.listener = listener + port = listener.port + listener.start { [self] fd in admit(fd) } } var openConnectionCount: Int { lock.withLock { connections.count } } @@ -56,28 +32,22 @@ final class KeepAliveRangeOrigin: @unchecked Sendable { for fd in connections { shutdown(fd, SHUT_RDWR) } lock.unlock() guard !already else { return } - shutdown(listenFD, SHUT_RDWR) - close(listenFD) + listener.stop() } - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - if fd < 0 { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - lock.lock() - if stopped { - lock.unlock() - shutdown(fd, SHUT_RDWR) - close(fd) - return - } - connections.insert(fd) - accepted += 1 + private func admit(_ fd: Int32) -> Bool { + lock.lock() + if stopped { lock.unlock() - Thread.detachNewThread { [self] in serve(fd) } + shutdown(fd, SHUT_RDWR) + close(fd) + return false } + connections.insert(fd) + accepted += 1 + lock.unlock() + Thread.detachNewThread { [self] in serve(fd) } + return true } private func serve(_ fd: Int32) { diff --git a/Tests/AetherEngineTests/Support/LongGOPTransportStreamFixture.swift b/Tests/AetherEngineTests/Support/LongGOPTransportStreamFixture.swift new file mode 100644 index 000000000..6a8996454 --- /dev/null +++ b/Tests/AetherEngineTests/Support/LongGOPTransportStreamFixture.swift @@ -0,0 +1,422 @@ +import Foundation + +/// Synthetic 32 s, 32x32 H.264 High / 25 fps / 10 s closed GOP / two B-frames, +/// AAC-LC stereo 44.1 kHz. No third-party content. Reproduce with: +/// ffmpeg -f lavfi -i testsrc2=size=32x32:rate=25 -f lavfi -i anullsrc=r=44100:cl=stereo +/// -t 32 -c:v libx264 -profile:v high -preset medium -g 250 -keyint_min 250 +/// -sc_threshold 0 -bf 2 -x264-params aud=1 -c:a aac -b:a 16k -f mpegts long-gop.ts +/// Stored as zlib so tests need neither ffmpeg nor a network download. +enum LongGOPTransportStreamFixture { + static func data() throws -> Data { + let bytes = Data(base64Encoded: [ + "eNrsvXlcjdv7Pr5TGRL1RMaoJEmldvM8IEklSZIkuznN86ySiBRlJpJ5SOYhY5kyZB4ylGSmEDJH33vtemo53r/f6/V+f46etV+v", + "5/zhcDj2Ws++r+u+7nvdz7WszClJzoh6RY5QKYfTJNTEEWpM6TlGSqjj6NFBod6+XRy9w6P9Pb01uDGJIy82kfWPlTlHksPZ3Y2/", + "do5QPWfYHpG9TYLxj9V4WHuH3b35a6/h1HP6ox8kamAX6qOKV5O9dguORqfxHE6C+Ez03B9xOCklYlxOF8kCitPpLg/9ty6S6Edf", + "L45Y4T3rQBFzDkeYAz+Ip52Z552Cfsuv9smlQSXwk46iTU3bKy1fHX9+b8yhZap35e4pvH0Xq6mrLacm5xkS7i3H1dWRC9fS1NSU", + "89DS0dXQ4cFvjBkOf0DdbryllZq2nMWkkfAnvbw94TdGhoTGBXr7RMppamhoqWlqaOrAf/SLjAw1VFePiYkZHm0lxKH8vbxDAnnB", + 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"VPUtvZQs/8C8TlW7bxOuONbu4+KdPsF7p/+V3KXSqzLhcY4Vn7+7U1SOrXR08jULUkt144md9y6ASIG4iULmwGW2SybFhcS/MF1/", + "7JirW/3DhPkaL0LLVVLUOspZl7ltKH19XbvH/TxDS/eKC1M/T5S3cUoS9gODJhhAb+9+egRkfUAeSI1ZrAkyK87ifFDYq6VSrgky", + "BAw5N0gTuIAmuBiogubEPRTWCVL3/UISWsmEj5U8a2cfV30dDS0NLU1t3liVLkV9DWiqFJA5cQFsf/d/uYsJ5oxCe65h+wNHarL4", + "3gMd7kxlIngzUA/cLjfRJOWFV/TXKU0Nb3z0j199oxk/wJvUsGm+o0x/AMkqhDJE7pssmZY7Ss7DhbUaNtEEpmnUaoJMSQmGnB1E", + "8EmiGocuvfXITG+QMrB2BN0UNJ/PgqfHh+9ufZzSulimkQVD6AeBtVj0Tp7zcGGtlkp5PTLTFvJ+ODoIq49E7+RHb4Tzbs9e7z5e", + "ZirkU7BWhM2nLSXIyf4QV3XTF1T1KYob6hb06yYvsnYDujVwZjhoYCAc1D/TDT571cBqzgeFvVpqEJz3Raz77qNjksUDNQlnBbUw", + "9bSq6TZjoeag5p3643h3ixIyzt4qEs5FpFhHZhaDjgQIo143NUtd6+HNtz0CvpvPl75/Azef79//8z/cDRsRHelD75uJzFrQkXB2", + "EElO/hKbOB8UtjjSOIi228ksGyLba/FLlelfMu6uZmtvzbSNfyXQrx3tJewHhvO+6SOdPYZZiiDfge8RR3oKc23CkeZM/3ZcnzGl", + "XANnGYAGhu+PeGb7l3yV83Bh68yYbQOsRkrR6CWSdQDUDJwZRDg7vuQiXc2GkznPmlR7WmStgNQDSBMRTXbbDFMtogkEitRqgqxQ", + "SARhCwir10SagPNwYQer2qzfe+AD8onE0VD86uOfFnSeXFN85rasStyFuqdRkX+7T94vnIsI5z2T0ncHWWdBAAPdIKg2CaFaqdTw", + "3ay1zLRcbtaaWPImXdr1TI0qQ84Oqun1FnEk54PCDkfqBQDPnDCmY55NznQiAWrwmxWFLxzZJXyztMzEV5OcjTqfVEwq1ZxVJOwH", + "plnP5PQj6v0TfjVhgPuB4buXWFOrZ3L0IHuFLSCs2olyD84HhR2sGniwNaUhJxkCPhwJBEwHETAPLzbfww+IF8w2CuRVGJx+cXXx", + "rn0v7WOiq++udGjqss+mLmkNqWETPXNzHp16JscDxDuQD4Kqn3DO85u8x6SGTfedTc5myPtgCwiquwGqb5ccmmDOKLZjbzTOw4Ud", + "njGaCVh9+H9+74EP7HuIjHBqEZsEiNikblLfTce2DJr/nyhexOhly2w8m0dU6seknJyZahZ9+fDNNb2b6q6uvbyvNN832s1z+OM/", + "ZvvuCH0156/C6ZcuOxwhdWCa75tyToMABi5FPFPYxjPfzFrLynrBzVoTS95kEgHnvWk9rZ4WOVUWDDk6iN/vCPk9i/NwYY0jTent", + "F8udQtRMFe7x/7OFXjPHkXcHZnwZXm/JUEr7xXJ7k8zjPe7cr2mrA2tSXuPI1YYUFraA6sAdRHkT5+HCDla15sN5Z35gHzb+/RMh", + "xMMhQGXeziLwHWemXJm85GfHwX0fve80WKW7ZcianFG7zOyfuKQFu+TbqbiFmERM+Hiu4c5NvUtX+GoafWjvw85dApkH0A2qAw9q", + "0TOPSA0b4mpv5TRa42puMCS1sAUEVUtR3sT5oLCEVV1Hnth+/zcQaOAQIKhatUJ1xKMXCQMkPWUszV8XpNu8OxHsv8ZOOuzi2UmO", + "NbGJ2vxpjxuaVg496e08yDupl7zpr+cchHMR4byrH6ezxpF7ElQksBPCqjtgVb2ZnPdv55Xl5A/n5pWJJffQp7u2lHsLUnU4Oogj", + "Q4Aj6z+rcj4orHHk6G3AM0YXaexByf+VKIJbuAcltIVTS8cXTTBnfm7H/WIGVN835cuRzOMN7p852JY3GUbCmbGqpPa+KX8UJK2w", + "BUQ0JaK7Yc7DhZ3zPoaWGXf5myCpghOCWOWyyOjHt3iloN8LXZP3HntH6Sb8tcFjk94pUsMmuYftM1pzj/xFkHsAWX7jU0viqgXP", + "mN7aUv4N0Myw+K+8a4UPP1Q93Ys47xzWsGpCanoLafXdz98LyQeg+CujWvLQRhibaO/Dzj8OIhi28I3Xq9B3/+tZa7nHXblZa+LI", + "mySMV5uzdCpO8YyFv3V+Udy/+Q3+CyzE64g=", + ].joined())! + // Foundation's zlib decompressor expects the raw DEFLATE payload. + return try (bytes.dropFirst(2).dropLast(4) as NSData).decompressed(using: .zlib) as Data + } +} diff --git a/Tests/AetherEngineTests/Support/LoopbackListener.swift b/Tests/AetherEngineTests/Support/LoopbackListener.swift new file mode 100644 index 000000000..5c194eb9b --- /dev/null +++ b/Tests/AetherEngineTests/Support/LoopbackListener.swift @@ -0,0 +1,108 @@ +import Foundation + +/// A 127.0.0.1 listen socket for the test origins, with the one ownership rule they kept getting +/// wrong: the accept thread owns the listen descriptor and is the only one that closes it. +/// +/// Every suite runs in one process, and Darwin hands out the lowest free descriptor number, so a +/// number closed by `stop()` belongs to the next socket anyone opens. An accept loop that still held +/// it then accepted, and dropped, a connection meant for another suite's origin, which reached that +/// suite as a request with no response or a connection lost mid-body. `shutdown()` on a listening +/// socket does not wake a blocked `accept` on Darwin, so the loop polls the listener together with a +/// wake pipe that `stop()` writes to. +final class LoopbackListener: @unchecked Sendable { + let port: UInt16 + private let listenFD: Int32 + private let wakeRead: Int32 + private let wakeWrite: Int32 + private let lock = NSLock() + private var stopped = false + /// Set by the accept loop under `lock` as it closes the listener and the pipe, so `stop()` never + /// writes to a pipe number that may already be another socket's. + private var closed = false + + init?(backlog: Int32 = 32) { + let fd = socket(AF_INET, SOCK_STREAM, 0) + guard fd >= 0 else { return nil } + var one: Int32 = 1 + setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) + var address = sockaddr_in() + address.sin_family = sa_family_t(AF_INET) + address.sin_port = 0 + address.sin_addr.s_addr = inet_addr("127.0.0.1") + let bound = withUnsafePointer(to: &address) { + $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { + bind(fd, $0, socklen_t(MemoryLayout.size)) + } + } + var length = socklen_t(MemoryLayout.size) + var wake: [Int32] = [-1, -1] + guard bound == 0, listen(fd, backlog) == 0, + withUnsafeMutablePointer(to: &address, { + $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { getsockname(fd, $0, &length) } + }) == 0, + pipe(&wake) == 0, + fcntl(wake[1], F_SETFL, O_NONBLOCK) == 0 else { + close(fd) + for pipeFD in wake where pipeFD >= 0 { close(pipeFD) } + return nil + } + listenFD = fd + wakeRead = wake[0] + wakeWrite = wake[1] + port = UInt16(bigEndian: address.sin_port) + } + + /// Runs the accept loop on its own thread. `onAccept` gets every accepted descriptor, already set + /// to `SO_NOSIGPIPE`, and owns it from then on; it returns false to end the loop. It is never + /// called once `stop()` has run. + func start(_ onAccept: @escaping (Int32) -> Bool) { + Thread.detachNewThread { [self] in acceptLoop(onAccept) } + } + + /// Idempotent. Wakes the accept loop, which closes the listener on its way out. + func stop() { + lock.lock() + defer { lock.unlock() } + guard !stopped else { return } + stopped = true + guard !closed else { return } + var byte: UInt8 = 1 + _ = write(wakeWrite, &byte, 1) + } + + private func acceptLoop(_ onAccept: (Int32) -> Bool) { + defer { + lock.lock() + closed = true + close(listenFD) + close(wakeRead) + close(wakeWrite) + lock.unlock() + } + while true { + var fds = [ + pollfd(fd: listenFD, events: Int16(POLLIN), revents: 0), + pollfd(fd: wakeRead, events: Int16(POLLIN), revents: 0), + ] + let ready = fds.withUnsafeMutableBufferPointer { poll($0.baseAddress, nfds_t($0.count), -1) } + if ready < 0 { + if errno == EINTR { continue } + return + } + if lock.withLock({ stopped }) || fds[1].revents != 0 { return } + guard fds[0].revents != 0 else { continue } + let fd = accept(listenFD, nil, nil) + if fd < 0 { + if errno == EINTR || errno == ECONNABORTED { continue } + return + } + var one: Int32 = 1 + setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) + if lock.withLock({ stopped }) { + close(fd) + return + } + if !onAccept(fd) { return } + } + } +} diff --git a/Tests/AetherEngineTests/Support/OffCooperativePool.swift b/Tests/AetherEngineTests/Support/OffCooperativePool.swift new file mode 100644 index 000000000..0934aa71a --- /dev/null +++ b/Tests/AetherEngineTests/Support/OffCooperativePool.swift @@ -0,0 +1,27 @@ +import Testing +@testable import AetherEngine + +/// Runs a test's body on `BlockingExecutor` instead of the Swift cooperative pool. +/// +/// For tests that block their thread on purpose: they drive a synchronous engine API (an +/// `AVIOReader` open or read, a gate that parks, a FIFO), or park on a server of their own. On the +/// pool each of those holds one of only as many threads as there are cores, and on a 3-core CI +/// runner a handful of them at once starved every other test, the time-limit watchdogs included. +/// A sync test runs where its caller runs, so preferring the executor here moves the whole body. +struct OffCooperativePoolTrait: SuiteTrait, TestTrait, TestScoping { + var isRecursive: Bool { true } + + func provideScope(for test: Test, testCase: Test.Case?, + performing function: @Sendable () async throws -> Void) async throws { + guard testCase != nil else { return try await function() } + if #available(visionOS 2, *) { + try await withTaskExecutorPreference(BlockingExecutor.shared) { try await function() } + } else { + try await function() + } + } +} + +extension Trait where Self == OffCooperativePoolTrait { + static var offCooperativePool: Self { Self() } +} diff --git a/Tests/AetherEngineTests/Support/PrewarmStoreSuites.swift b/Tests/AetherEngineTests/Support/PrewarmStoreSuites.swift new file mode 100644 index 000000000..6ba5b1c93 --- /dev/null +++ b/Tests/AetherEngineTests/Support/PrewarmStoreSuites.swift @@ -0,0 +1,8 @@ +import Testing + +/// Every suite that warms, adopts or clears `SourcePrewarmStore.shared`. The store is process-wide +/// and each of them clears it, so `.serialized` on one suite did not keep another from emptying it +/// between a warm and the open that was meant to adopt it (the open then went cold, to byte zero). +/// `.serialized` here is recursive: the suites nested in it run one after another. +@Suite(.serialized) +enum PrewarmStoreSuites {} diff --git a/Tests/AetherEngineTests/Support/ProbeHTTPTestOrigin.swift b/Tests/AetherEngineTests/Support/ProbeHTTPTestOrigin.swift index da436dbe6..e9b9f673c 100644 --- a/Tests/AetherEngineTests/Support/ProbeHTTPTestOrigin.swift +++ b/Tests/AetherEngineTests/Support/ProbeHTTPTestOrigin.swift @@ -30,13 +30,19 @@ final class ProbeHTTPTestOrigin: @unchecked Sendable { private let wakeWrite: Int32 private let data: Data private let stage: Stage? + private let stallOpenEndedBody: Bool private let onBlocked: @Sendable () -> Void + private let response: (@Sendable (Request, Int) -> Data?)? private let state = ProbeTestBox(State()) - init(data: Data, stage: Stage? = nil, onBlocked: @escaping @Sendable () -> Void = {}) throws { + init(data: Data, stage: Stage? = nil, stallOpenEndedBody: Bool = false, + onBlocked: @escaping @Sendable () -> Void = {}, + response: (@Sendable (Request, Int) -> Data?)? = nil) throws { self.data = data self.stage = stage + self.stallOpenEndedBody = stallOpenEndedBody self.onBlocked = onBlocked + self.response = response let fd = socket(AF_INET, SOCK_STREAM, 0) guard fd >= 0 else { throw NSError(domain: NSPOSIXErrorDomain, code: Int(errno)) } var wake: [Int32] = [-1, -1] @@ -177,6 +183,11 @@ final class ProbeHTTPTestOrigin: @unchecked Sendable { if holding.value { held.wait() } guard !state.value.stopping else { return } + if let custom = response?(request, index) { + _ = writeFully(fd, data: custom) + return + } + var start = 0 var end = data.count - 1 if let range = request.range { @@ -196,6 +207,7 @@ final class ProbeHTTPTestOrigin: @unchecked Sendable { } let ranged = request.range != nil let header = "HTTP/1.1 \(ranged ? "206 Partial Content" : "200 OK")\r\n" + + "Content-Type: application/octet-stream\r\n" + "Content-Length: \(end - start + 1)\r\n" + (ranged ? "Content-Range: bytes \(start)-\(end)/\(data.count)\r\n" : "") + "Accept-Ranges: bytes\r\nConnection: close\r\n\r\n" @@ -203,7 +215,8 @@ final class ProbeHTTPTestOrigin: @unchecked Sendable { guard request.method != "HEAD" else { return } // The open-ended GET is the response-header-only size probe. Park the subsequent // finite chunk request only, after its headers but before its first payload byte. - if stage == .body, request.range != nil, request.range != "bytes=0-" { park() } + if stage == .body, request.range != nil, + stallOpenEndedBody || request.range != "bytes=0-" { park() } guard !state.value.stopping else { return } _ = writeFully(fd, data: data.subdata(in: start..<(end + 1))) } diff --git a/Tests/AetherEngineTests/ThrottledOriginServer.swift b/Tests/AetherEngineTests/ThrottledOriginServer.swift index 8706d1d49..502989e91 100644 --- a/Tests/AetherEngineTests/ThrottledOriginServer.swift +++ b/Tests/AetherEngineTests/ThrottledOriginServer.swift @@ -39,7 +39,7 @@ final class ThrottledOriginServer: @unchecked Sendable { } let port: UInt16 - private let listenFD: Int32 + private let listener: LoopbackListener /// #551: a var only so a test can make the origin's stated total CHANGE between two requests, /// which is the one shape that proves the reader rechecks a warm's size against the connection /// that is actually serving it. Every other test leaves it at its init value. @@ -161,42 +161,13 @@ final class ThrottledOriginServer: @unchecked Sendable { self.firstByteDelayUs = firstByteDelayUs self.respond = respond - let fd = socket(AF_INET, SOCK_STREAM, 0) - guard fd >= 0 else { return nil } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, socklen_t(MemoryLayout.size)) - - var addr = sockaddr_in() - addr.sin_family = sa_family_t(AF_INET) - addr.sin_port = 0 - addr.sin_addr.s_addr = inet_addr("127.0.0.1") - let bindResult = withUnsafePointer(to: &addr) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - bind(fd, $0, socklen_t(MemoryLayout.size)) - } - } // #450: a backlog of 4 is a ceiling of this harness's own, and the suite that reads // this origin's request log is measuring how many concurrent readers get on the link. // A harness that brings its own version of the cause cannot measure it. - guard bindResult == 0, listen(fd, 32) == 0 else { - close(fd) - return nil - } - var bound = sockaddr_in() - var len = socklen_t(MemoryLayout.size) - let nameResult = withUnsafeMutablePointer(to: &bound) { - $0.withMemoryRebound(to: sockaddr.self, capacity: 1) { - getsockname(fd, $0, &len) - } - } - guard nameResult == 0 else { - close(fd) - return nil - } - self.listenFD = fd - self.port = UInt16(bigEndian: bound.sin_port) - - Thread.detachNewThread { [self] in acceptLoop() } + guard let listener = LoopbackListener(backlog: 32) else { return nil } + self.listener = listener + self.port = listener.port + listener.start { [self] fd in admit(fd) } } func stop() { @@ -213,8 +184,7 @@ final class ThrottledOriginServer: @unchecked Sendable { for fd in fds { shutdown(fd, SHUT_RDWR) } lock.unlock() guard !alreadyStopped else { return } - shutdown(listenFD, SHUT_RDWR) - close(listenFD) + listener.stop() } /// The one place a connection fd is closed. Deregistering and closing under the lock is @@ -226,23 +196,18 @@ final class ThrottledOriginServer: @unchecked Sendable { lock.unlock() } - private func acceptLoop() { - while true { - let fd = accept(listenFD, nil, nil) - if fd < 0 { return } - var one: Int32 = 1 - setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &one, socklen_t(MemoryLayout.size)) - lock.lock() - if _stopped { - lock.unlock() - shutdown(fd, SHUT_RDWR) - close(fd) - return - } - _connFDs.append(fd) + private func admit(_ fd: Int32) -> Bool { + lock.lock() + if _stopped { lock.unlock() - Thread.detachNewThread { [self] in serve(fd) } + shutdown(fd, SHUT_RDWR) + close(fd) + return false } + _connFDs.append(fd) + lock.unlock() + Thread.detachNewThread { [self] in serve(fd) } + return true } /// One connection, many requests: a bounded-range reader issues the next range on the diff --git a/Tests/AetherEngineTests/TinyTransportStreamFixture.swift b/Tests/AetherEngineTests/TinyTransportStreamFixture.swift index 530d28f76..9bd2e02de 100644 --- a/Tests/AetherEngineTests/TinyTransportStreamFixture.swift +++ b/Tests/AetherEngineTests/TinyTransportStreamFixture.swift @@ -18,7 +18,8 @@ enum TinyTransportStreamFixture { /// The stream as a live source serves it: from byte 0 to its end, then EOF, with no length and /// no disc probe (a disc probe reads ahead, and a live open does not rewind after it). final class LiveReader: IOReader, @unchecked Sendable { - private let bytes = TinyTransportStreamFixture.data + private let bytes: Data + init(bytes: Data = TinyTransportStreamFixture.data) { self.bytes = bytes } private let lock = NSLock() private var position = 0 diff --git a/Tests/AetherEngineTests/TrueHDObjectMetadataMappingTests.swift b/Tests/AetherEngineTests/TrueHDObjectMetadataMappingTests.swift new file mode 100644 index 000000000..bde0d3b4c --- /dev/null +++ b/Tests/AetherEngineTests/TrueHDObjectMetadataMappingTests.swift @@ -0,0 +1,151 @@ +import Testing +import Foundation +import TrueHD +@testable import AetherEngine + +/// The TrueHD decoder reports OAMD as the bitstream states it; `TrueHDObjectAudioDecoder` turns +/// that into what the renderer acts on (#731). These pin the translations a listener would hear +/// wrong: a bed channel on the wrong speaker, a floor-only object in the ceiling, a zone mask +/// that does not keep an object off the speakers it names. +@Suite("TrueHD object metadata maps onto the renderer's room") +struct TrueHDObjectMetadataMappingTests { + + private func element( + kind: UInt8 = TRUEHD_ATMOS_ELEMENT_OBJECT, + flags: UInt32 = TRUEHD_ATMOS_ELEMENT_ACTIVE | TRUEHD_ATMOS_ELEMENT_ELEVATION, + position: (Float, Float, Float) = (0.25, 0.5, 0.75), + gain: Float = 0.5, + size: (Float, Float, Float) = (0, 0, 0), + zone: UInt8 = TRUEHD_ATMOS_ZONE_ALL + ) -> TrueHDAtmosElement { + var e = TrueHDAtmosElement() + e.kind = kind + e.speaker = TRUEHD_ATMOS_SPEAKER_OBJECT + e.zone = zone + e.flags = flags + e.position = position + e.gain = gain + e.size = size + return e + } + + @Test("bed speaker codes route to the matching speaker, LFE to LFE, the rest are positioned") + func speakerRoles() { + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_L) == .bed(.left)) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_LS) == .bed(.sideLeft)) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_RB) == .bed(.rearRight)) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_TSR) == .bed(.topMiddleRight)) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_LFE) == .lfe) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_LFE2) == .lfe) + // No home layout has the screen, centre back or top centre channels; they sit at their + // nominal position so a presentation without metadata still plays them. + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_TC) == .fixed(SIMD3(0.5, 0.5, 1))) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_TFC) == .fixed(SIMD3(0.5, 0.25, 1))) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_CB) == .fixed(SIMD3(0.5, 1, 0))) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_LSC) == .fixed(SIMD3(0.25, 0, 0))) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_OBJECT) == .object) + #expect(TrueHDObjectAudioDecoder.role(forSpeaker: TRUEHD_ATMOS_SPEAKER_UNKNOWN) == .object) + } + + @Test("an active elevated object keeps its position, gain and largest size dimension") + func plainObject() { + let state = TrueHDObjectAudioDecoder.state(for: element(size: (0.1, 0.3, 0.2))) + #expect(state.position == SIMD3(0.25, 0.5, 0.75)) + #expect(state.gain == 0.5) + #expect(state.size == 0.3) + #expect(state.excluded.isEmpty) + #expect(!state.snap) + } + + @Test("an inactive object is silent") + func inactiveObject() { + let state = TrueHDObjectAudioDecoder.state(for: element(flags: TRUEHD_ATMOS_ELEMENT_ELEVATION)) + #expect(state.gain == 0) + } + + @Test("an object without elevation stays off every height speaker") + func noElevation() { + let state = TrueHDObjectAudioDecoder.state(for: element(flags: TRUEHD_ATMOS_ELEMENT_ACTIVE)) + let heights = Set(SpatialSpeaker.allCases.filter(\.isHeight)) + #expect(heights.isSubset(of: state.excluded)) + #expect(!state.excluded.contains(.left)) + } + + @Test("a position below the ear-level plane is clamped to it") + func belowEarLevel() { + let state = TrueHDObjectAudioDecoder.state(for: element(position: (0.5, 0.5, -0.6))) + #expect(state.position.z == 0) + } + + @Test("a screen-anchored object keeps its room depth, the top of the screen halfway up the room") + func screenReference() { + let flags = TRUEHD_ATMOS_ELEMENT_ACTIVE | TRUEHD_ATMOS_ELEMENT_ELEVATION | TRUEHD_ATMOS_ELEMENT_SCREEN_REF + // Only x and z are screen-anchored; y is still depth, so an object flying from the screen to + // the back wall travels (review of eae933d0 found it pinned to the front wall). + let state = TrueHDObjectAudioDecoder.state(for: element(flags: flags, position: (0.8, 0.6, 1))) + #expect(state.position == SIMD3(0.8, 0.6, 0.5)) + } + + @Test("an ISF object, whose position is not decoded, is spread over the room") + func isfSpread() { + let state = TrueHDObjectAudioDecoder.state(for: element(kind: TRUEHD_ATMOS_ELEMENT_ISF, position: (0, 0, 0))) + #expect(state.position == SIMD3(0.5, 0.5, 0.5)) + #expect(state.size == 1) + } + + @Test("snap is carried through") + func snap() { + let flags = TRUEHD_ATMOS_ELEMENT_ACTIVE | TRUEHD_ATMOS_ELEMENT_ELEVATION | TRUEHD_ATMOS_ELEMENT_SNAP + #expect(TrueHDObjectAudioDecoder.state(for: element(flags: flags)).snap) + } + + @Test("zone masks keep an object off the speakers they name") + func zoneMasks() { + let noBack = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_NO_BACK) + #expect(noBack.isSuperset(of: [.rearLeft, .rearRight])) + #expect(!noBack.contains(.sideLeft)) + // TS 103 448 table 4: on a 3/2 floor neither no-back nor no-sides removes the surrounds. + #expect(!noBack.contains(.surroundLeft) && !noBack.contains(.surroundRight)) + + let noSides = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_NO_SIDES) + #expect(noSides.isSuperset(of: [.sideLeft, .sideRight])) + #expect(!noSides.contains(.rearLeft) && !noSides.contains(.surroundLeft)) + + let screen = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_SCREEN_ONLY) + #expect(!screen.contains(.left) && !screen.contains(.center) && !screen.contains(.right)) + #expect(screen.isSuperset(of: [.sideLeft, .rearRight, .surroundLeft, .surroundRight])) + + let surround = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_SURROUND_ONLY) + #expect(surround.isSuperset(of: [.left, .right, .center])) + #expect(!surround.contains(.sideLeft)) + + let centerBack = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_CENTER_BACK) + #expect(centerBack.isSuperset(of: [.left, .right, .sideLeft, .sideRight])) + #expect(!centerBack.contains(.center) && !centerBack.contains(.rearLeft)) + + #expect(TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_ALL).isEmpty) + } + + @Test("a zone mask applied through the panner keeps the object's power on the allowed speakers") + func zoneMaskThroughPanner() { + let layout = SpatialSpeakerLayout.l714 + let excluded = TrueHDObjectAudioDecoder.excludedSpeakers(zone: TRUEHD_ATMOS_ZONE_NO_BACK) + let panner = AllocentricPanner(layout: layout, excluded: excluded) + var gains: [Float] = [] + panner.objectGains(position: SIMD3(0.1, 1, 0), size: 0, snap: false, into: &gains) + for (channel, speaker) in layout.speakers.enumerated() where excluded.contains(speaker) { + #expect(gains[channel] == 0, "\(speaker)") + } + #expect(abs(gains.reduce(0) { $0 + $1 * $1 } - 1) < 1e-5) + } + + @Test("the decoder opens, takes input and asks for more") + func decoderLifecycle() throws { + let decoder = try TrueHDObjectAudioDecoder() + let junk = [UInt8](repeating: 0x5A, count: 4096) + try junk.withUnsafeBytes { try decoder.push($0) } + #expect(try decoder.nextBlock() == nil) + decoder.reset() + #expect(try decoder.nextBlock() == nil) + } +} diff --git a/Tests/AetherEngineTests/UDFFixture.swift b/Tests/AetherEngineTests/UDFFixture.swift index fa709bb5b..4a8887b4c 100644 --- a/Tests/AetherEngineTests/UDFFixture.swift +++ b/Tests/AetherEngineTests/UDFFixture.swift @@ -84,7 +84,11 @@ enum UDFFixture { /// the physical partition AFTER the metadata region. /// `m2tsViaAED`: place the m2ts EFE's second extent behind a type-3 allocation-extent /// continuation (an AED at vblock 13) instead of inline, to exercise AED chaining. - static func make(mplsBytes: [UInt8], m2tsBytes: [UInt8], m2tsViaAED: Bool = false) -> Data { + /// `clpiBytes`: add `BDMV/CLIPINF/00001.clpi` (vblocks 14-17, one sector of data). A CLPI fixture + /// carries a real stream whose EP map points into it, so the m2ts is then written whole rather than + /// a sector per extent; each half has to fit the 10 blocks between the two extents. + static func make(mplsBytes: [UInt8], m2tsBytes: [UInt8], m2tsViaAED: Bool = false, + clpiBytes: [UInt8]? = nil) -> Data { let partStart = 270 // metadata partition extent = physical blocks 2.. of partition 0. // virtual block V -> physical sector partStart + 2 + V. @@ -104,8 +108,14 @@ enum UDFFixture { let half = m2tsBytes.count / 2 let m2tsExt1 = Array(m2tsBytes[0.. = []) -> Data { + let partStart = 270 + func phys(_ vblock: Int) -> Int { partStart + 2 + vblock } + var block = 40 + var placed: [(name: String, ads: [UInt8], length: Int)] = [] + var data: [(block: Int, bytes: [UInt8])] = [] + for file in files { + let sectors = { (count: Int) in max(1, (count + ss - 1) / ss) } + if fragmented.contains(file.name) { + let half = (file.bytes.count / 2 / ss) * ss + let first = Array(file.bytes[0.. [UInt8] { diff --git a/Tests/AetherEngineTests/UDFOnlyDVDImageTests.swift b/Tests/AetherEngineTests/UDFOnlyDVDImageTests.swift new file mode 100644 index 000000000..6eb20abb9 --- /dev/null +++ b/Tests/AetherEngineTests/UDFOnlyDVDImageTests.swift @@ -0,0 +1,97 @@ +import Foundation +import Testing +@testable import AetherEngine + +/// A DVD-Video image with no ISO9660 bridge volume, only UDF: recognized through UDF instead of falling +/// through to a raw open of the whole image. +@Suite("UDF-only DVD-Video images") +struct UDFOnlyDVDImageTests { + + static func bytes(_ seed: UInt8, _ count: Int) -> [UInt8] { + (0.. [(name: String, bytes: [UInt8])] { + [("VIDEO_TS.IFO", bytes(1, 2048)), + ("VIDEO_TS.VOB", bytes(2, 2048)), + ("VTS_01_0.IFO", bytes(3, 2048)), + ("VTS_01_0.VOB", bytes(4, 2048)), + ("VTS_01_1.VOB", bytes(5, contentA)), + ("VTS_01_2.VOB", bytes(6, contentB)), + ("VTS_02_1.VOB", bytes(7, 3000))] + } + + static func readToEnd(_ reader: IOReader) -> [UInt8] { + var out: [UInt8] = [] + var buffer = [UInt8](repeating: 0, count: 1000) + while true { + let n = buffer.withUnsafeMutableBufferPointer { reader.read($0.baseAddress, size: 1000) } + if n <= 0 { break } + out += buffer[0..?, size: Int32) -> Int32 { base.read(buffer, size: size) } + func seek(offset: Int64, whence: Int32) -> Int64 { + if whence == SEEK_SET { lock.withLock { offsets.append(offset) } } + return base.seek(offset: offset, whence: whence) + } + func close() {} + } + + @Test("a source that is no disc is still sniffed for the UDF anchor once") + func nonDiscReadsTheAnchorOnce() throws { + let reader = SeekLog(Data(repeating: 0, count: 600 * 1024)) + #expect(try DiscReader.wrap(reader) == nil) + #expect(reader.seeks.filter { $0 == 256 * 2048 }.count == 1) + } +} diff --git a/Tests/AetherEngineTests/VODOpenSeekIntegrationTests.swift b/Tests/AetherEngineTests/VODOpenSeekIntegrationTests.swift new file mode 100644 index 000000000..b37940d1a --- /dev/null +++ b/Tests/AetherEngineTests/VODOpenSeekIntegrationTests.swift @@ -0,0 +1,93 @@ +import AVFoundation +import Combine +import Foundation +import Testing +@testable import AetherEngine + +/// Real AVPlayer witness with a synthetic H.264/AAC MKV, served only over loopback. +/// Scripts/test-vod-open-seek.sh supplies the fixture; no provider credentials are needed. +@Suite(.serialized, .timeLimit(.minutes(2))) +@MainActor +struct VODOpenSeekIntegrationTests { + private func fixture() throws -> Data { + let path = try #require(ProcessInfo.processInfo.environment["AETHER_VOD_FIXTURE"]) + return try Data(contentsOf: URL(fileURLWithPath: path)) + } + + @Test("A silent first request recovers once, then native forward and backward seeks land", + .enabled(if: ProcessInfo.processInfo.environment["AETHER_VOD_FIXTURE"] != nil)) + func recoveredSourceSeeks() async throws { + let origin = try ProbeHTTPTestOrigin(data: fixture(), stage: .headers) + let engine = try AetherEngine() + defer { engine.stop(); origin.stop() } + var options = LoadOptions(sourceOpenPolicy: .init(firstByteTimeout: 0.2, sizeProbeTimeout: 2)) + options.maxConcurrentSourceRequests = 1 + options.prepareNativeSubtitles = true + options.preferredSubtitleLanguages = ["en"] + options.suppressDisplayCriteria = true + let started = ContinuousClock.now + try await engine.load(url: URL(string: "http://127.0.0.1:\(origin.port)/media.mkv")!, options: options) + try await waitFor { engine.canSeek && engine.currentTime > 0.5 } + #expect(engine.videoRoute == .loopback) + #expect(!engine.subtitleTracks.isEmpty) + // The primary packet harvest must still supply subtitles with serial source I/O. + try await waitFor { !engine.subtitleCues.isEmpty } + let elapsed = started.duration(to: .now) + print("VOD_RECOVERY_READY=\(elapsed) requests=\(origin.requests.count)") + #expect(elapsed < .seconds(5), "a recovered open must not repeat the probe/reconnect ladder") + #expect(origin.requests.allSatisfy { $0.method == "GET" && $0.range != nil }) + let player = try #require(engine.currentAVPlayer) + var events: [SeekEvent] = [] + let observer = engine.seekEvents.sink { events.append($0) } + defer { observer.cancel() } + for target in [12.0, 4.0] { + await engine.seek(to: target) + let actual = player.currentTime().seconds + print("VOD_SEEK target=\(target) item=\(actual) engine=\(engine.currentTime) source=\(engine.sourceTime)") + #expect(abs(actual - target) < 1) + #expect(abs(engine.currentTime - target) < 1) + let landed = events.contains { event in + if case .landed(let rendered) = event.outcome { return abs(rendered - target) < 1 } + return false + } + #expect(landed) + try await waitFor { engine.currentTime > target + 1 } + #expect(player.currentItem?.error == nil) + } + engine.pause() + await engine.seek(to: 6) + #expect(abs(player.currentTime().seconds - 6) < 0.25) + #expect(engine.state == .paused) + #expect(player.rate == 0) + let source = URL(string: "http://127.0.0.1:\(origin.port)/media.mkv")! + #expect(OriginRequestBudget.shared.snapshot(for: source)?.peakInflight == 1) + } + + @Test("A forward-only VOD ignores saved position and rejects seeks without a false landing", + .enabled(if: ProcessInfo.processInfo.environment["AETHER_VOD_FIXTURE"] != nil)) + func sequentialSourceHasHonestClock() async throws { + let origin = try ProbeHTTPTestOrigin(data: fixture()) + let engine = try AetherEngine() + defer { engine.stop(); origin.stop() } + var options = LoadOptions() + options.sequentialOrigin = true + options.declaredDurationSeconds = 20 + options.maxConcurrentSourceRequests = 1 + options.prepareNativeSubtitles = true + options.preferredSubtitleLanguages = ["en"] + options.suppressDisplayCriteria = true + try await engine.load(url: URL(string: "http://127.0.0.1:\(origin.port)/media.mkv")!, startPosition: 12, options: options) + try await waitFor { engine.isSessionReady && engine.currentTime > 0.5 } + #expect(engine.isSourceSeekable == false) + #expect(!engine.canSeek) + #expect(engine.currentTime < 5) + var events: [SeekEvent] = [] + let observer = engine.seekEvents.sink { events.append($0) } + defer { observer.cancel() } + await engine.seek(to: 12) + #expect(events.map(\.outcome) == [.rejected(.sourceNotSeekable)]) + #expect(engine.currentTime < 5) + #expect(!engine.isSeeking) + print("VOD_SEQUENTIAL clock=\(engine.currentTime) seekable=\(engine.canSeek) events=\(events)") + } +} diff --git a/Tests/AetherEngineTests/VODSeekCapabilityTests.swift b/Tests/AetherEngineTests/VODSeekCapabilityTests.swift new file mode 100644 index 000000000..6b940b73c --- /dev/null +++ b/Tests/AetherEngineTests/VODSeekCapabilityTests.swift @@ -0,0 +1,71 @@ +import Foundation +import Combine +import Testing +@testable import AetherEngine + +@Suite(.timeLimit(.minutes(2))) +@MainActor +struct VODSeekCapabilityTests { + @Test("A known duration never makes a forward-only source seekable") + func rejectsForwardOnlySeek() async throws { + let engine = try AetherEngine() + engine.state = .playing + engine.isSessionReady = true + engine.duration = 493.6 + engine.isSourceSeekable = false + engine.clock.currentTime = 14.99 + engine.clock.sourceTime = 4.99 // sequential source PTS can differ from display time + var events: [SeekEvent] = [] + let sub = engine.seekEvents.sink { events.append($0) } + defer { sub.cancel(); engine.stop() } + #expect(!engine.canSeek) + await engine.seek(to: 271.7) + #expect(events.map(\.outcome) == [.rejected(.sourceNotSeekable)]) + #expect(engine.currentTime == 14.99) + #expect(engine.state == .playing) + #expect(!engine.isSeeking) + } + + @Test("Seekability belongs to this load and clears at stop") + func capabilityLifecycle() throws { + let engine = try AetherEngine() + defer { engine.stop() } + engine.duration = 493.6 + engine.isSessionReady = true + engine.state = .playing + #expect(!engine.canSeek) + engine.isSourceSeekable = true + #expect(engine.canSeek) + engine.isSourceSeekable = false + #expect(!engine.canSeek) + engine.stop() + #expect(engine.isSourceSeekable == nil) + #expect(!engine.canSeek) + } + + @Test("Native seek completion requires success and an actual landing") + func completionValidation() { + #expect(!NativeAVPlayerHost.seekCompletionReachedTarget(finished: true, actual: 14.99, target: 271.7)) + #expect(!NativeAVPlayerHost.seekCompletionReachedTarget(finished: false, actual: 271.7, target: 271.7)) + #expect(!NativeAVPlayerHost.seekCompletionReachedTarget(finished: true, actual: 271.7, target: 14.99)) + #expect(!NativeAVPlayerHost.seekCompletionReachedTarget(finished: true, actual: .nan, target: 14.99)) + #expect(NativeAVPlayerHost.seekCompletionReachedTarget(finished: true, actual: 271.72, target: 271.7)) + #expect(NativeAVPlayerHost.seekCompletionReachedTarget(finished: true, actual: 14.99, target: 15)) + } + @Test("A deferred seek drops its optimistic clock when the source proves forward-only") + func deferredSeekRejectedAfterProbe() async throws { + let engine = try AetherEngine() + defer { engine.stop() } + engine.duration = 493.6 + engine.state = .loading + engine.clock.sourceTime = 5 + await engine.seek(to: 271.7) + #expect(engine.isSeeking) + engine.isSourceSeekable = false + engine.state = .playing + try await waitFor { !engine.isSeeking } + #expect(engine.currentTime == 5) + } + + +} diff --git a/Tests/AetherEngineTests/VideoProgressTests.swift b/Tests/AetherEngineTests/VideoProgressTests.swift new file mode 100644 index 000000000..610c1f71c --- /dev/null +++ b/Tests/AetherEngineTests/VideoProgressTests.swift @@ -0,0 +1,161 @@ +import Testing +@testable import AetherEngine + +struct VideoProgressTests { + @Test("audio progress with a missing video presentation repairs twice, without an endless reload loop") + func presentationRecovery() { + var monitor = VideoPresentationProgress() + var actions: [VideoPresentationProgress.Action] = [] + for tick in 0..<200 { + let t = Double(tick) / 10 + if let action = monitor.observe(clock: 400 + t, now: t, eligible: true, + missingVideo: true, frameDuration: 0.04) { actions.append(action) } + } + #expect(actions == [.nudge, .reload]) + // Only a sustained healthy presentation rearms repairs; an item swap's short rise doesn't. + for tick in 200..<260 { + let t = Double(tick) / 10 + #expect(monitor.observe(clock: 400 + t, now: t, eligible: true, + missingVideo: false, frameDuration: 0.04) == nil) + } + #expect(monitor.attempts == 0) + } + + @Test("short video glitches, a stopped clock and ineligible presentation do not seek") + func presentationExclusions() { + for mode in 0..<3 { + var monitor = VideoPresentationProgress() + for tick in 0..<100 { + let t = Double(tick) / 10 + #expect(monitor.observe(clock: mode == 0 ? 100 : 100 + t, now: t, + eligible: mode != 1, missingVideo: mode != 2 || tick.isMultiple(of: 10), + frameDuration: 0.04) == nil) + } + } + } + + @Test("seeks, delayed observations and low frame rates restart the video repair grace") + func presentationDiscontinuities() { + var monitor = VideoPresentationProgress() + for tick in 0..<20 { + let t = Double(tick) / 10 + #expect(monitor.observe(clock: t, now: t, eligible: true, + missingVideo: true, frameDuration: 0.04) == nil) + } + #expect(monitor.observe(clock: 100, now: 5, eligible: true, + missingVideo: true, frameDuration: 0.04) == nil) + #expect(monitor.observe(clock: 100.1, now: 5.1, eligible: true, + missingVideo: true, frameDuration: 0.04) == nil) + monitor = VideoPresentationProgress() + for tick in 0..<50 { + let t = Double(tick) / 10 + #expect(monitor.observe(clock: t, now: t, eligible: true, + missingVideo: true, frameDuration: 1) == nil) + } + } + + @Test("ready layers with sustained decoded-output stalls repair; short device gaps do not") + func readyButStalled() { + // Durations observed on the four-device run: only sustained gaps warrant disruption. + for gap in [0.53, 0.69, 1.0, 1.18, 4.28, 5.17, 9.55] { + var frames = warmed() + var presentation = VideoPresentationProgress() + var actions: [VideoPresentationProgress.Action] = [] + for tick in 5...Int((gap + 0.2) * 20) { + let t = Double(tick) / 20 + _ = frames.observe(frame: nil, clock: t, now: t, eligible: true, frameDuration: 0.04) + let stalled = frames.isStalled(at: t, lastSampleAt: t, frameDuration: 0.04) + if let action = presentation.observe(clock: t, now: t, eligible: true, + missingVideo: stalled, frameDuration: 0.04, hasHealthyVideo: !stalled) { + actions.append(action) + } + } + #expect(actions == (gap < 3 ? [] : gap < 7 ? [.nudge] : [.nudge, .reload])) + } + } + + @Test("unavailable or delayed video output cannot trigger repair or rearm spent attempts") + func staleOutputAndUnknownHealth() { + var frames = warmed() + _ = frames.observe(frame: nil, clock: 0.8, now: 0.8, eligible: true, frameDuration: 0.04) + #expect(frames.isStalled(at: 0.8, lastSampleAt: 0.8, frameDuration: 0.04)) + #expect(!frames.isStalled(at: 1.2, lastSampleAt: 0.8, frameDuration: 0.04)) + #expect(!frames.isStalled(at: 0.8, lastSampleAt: nil, frameDuration: 0.04)) + frames.reset() + #expect(!frames.isStalled(at: 20, lastSampleAt: 20, frameDuration: 0.04)) + var monitor = VideoPresentationProgress() + for tick in 0..<200 { + let t = Double(tick) / 10 + _ = monitor.observe(clock: t, now: t, eligible: true, + missingVideo: tick < 80, frameDuration: 0.04, hasHealthyVideo: false) + } + #expect(monitor.attempts == 2, "a ready flag or detached output alone never rearms repairs") + } + + @Test("an unsuccessful internal repair keeps evidence through its temporary transport wait") + func pendingRepairSurvivesWaitingButNotUserTransitions() { + var frames = warmed() + frames.beginRecovery() + frames.reset(preservingRecovery: true) + #expect(frames.recoveryPending) + #expect(!frames.isStalled(at: 10, lastSampleAt: nil, frameDuration: 0.04)) + _ = frames.observe(frame: nil, clock: 1, now: 10, eligible: true, frameDuration: 0.04) + #expect(!frames.isStalled(at: 10, lastSampleAt: 10, frameDuration: 0.04)) + _ = frames.observe(frame: nil, clock: 1.5, now: 10.5, eligible: true, frameDuration: 0.04) + #expect(frames.isStalled(at: 10.5, lastSampleAt: 10.5, frameDuration: 0.04)) + _ = frames.observe(frame: 1.6, clock: 1.6, now: 10.6, eligible: true, frameDuration: 0.04) + #expect(!frames.recoveryPending) + frames = warmed(); frames.beginRecovery(); frames.reset() + #expect(!frames.recoveryPending, "PiP, pause, seek and a new session discard stale repair evidence") + } + + private func warmed() -> VideoFrameProgress { + var monitor = VideoFrameProgress() + for time in [0.0, 0.1, 0.2] { + _ = monitor.observe(frame: time, clock: time, now: time, eligible: true, frameDuration: 0.04) + } + return monitor + } + + @Test("video output stops while the item clock advances, then resumes once") + func shortVideoOnlyGap() { + var monitor = warmed() + let began = monitor.observe(frame: nil, clock: 0.6, now: 0.6, eligible: true, frameDuration: 0.04) + guard case .began(let age, let advance) = began else { Issue.record("missing output gap"); return } + #expect(abs(age - 0.4) < 0.000001 && abs(advance - 0.4) < 0.000001) + #expect(monitor.observe(frame: nil, clock: 0.7, now: 0.7, eligible: true, frameDuration: 0.04) == nil) + let ended = monitor.observe(frame: 0.8, clock: 0.8, now: 0.8, eligible: true, frameDuration: 0.04) + guard case .ended(let age) = ended else { Issue.record("missing output recovery"); return } + #expect(abs(age - 0.6) < 0.000001) + } + + @Test("a paused clock, unavailable output, seek or inactive rendering cannot report a freeze") + func exclusions() { + var monitor = warmed() + #expect(monitor.observe(frame: nil, clock: 0.2, now: 0.7, eligible: true, frameDuration: 0.04) == nil) + _ = monitor.observe(frame: nil, clock: 0.2, now: 0.8, eligible: false, frameDuration: 0.04) + #expect(monitor.samples == 0) + #expect(monitor.observe(frame: nil, clock: 20, now: 1, eligible: true, frameDuration: 0.04) == nil) + monitor = warmed() + #expect(monitor.observe(frame: nil, clock: 10, now: 0.7, eligible: true, frameDuration: 0.04) == nil) + #expect(monitor.samples == 0) + } + + @Test("low-frame-rate content gets its own observation allowance") + func lowFrameRate() { + var monitor = warmed() + #expect(monitor.observe(frame: nil, clock: 0.8, now: 0.8, eligible: true, frameDuration: 0.5) == nil) + } + + @Test("compressed timestamp gaps and source clock resets are separate") + func packetGaps() { + var monitor = VideoPacketProgress() + for index in 0..<8 { #expect(monitor.observe(Double(index) * 0.04) == nil) } + let gap = monitor.observe(0.8) + #expect(gap != nil) + #expect(abs((gap?.seconds ?? 0) - 0.52) < 0.000001) + #expect(monitor.observe(0) == nil) + #expect(monitor.observe(0.04) == nil) + #expect(monitor.observe(.nan) == nil) + } +} diff --git a/docs/api.md b/docs/api.md index dc99bf610..8e401259c 100644 --- a/docs/api.md +++ b/docs/api.md @@ -49,6 +49,8 @@ The message inside `.error` is worth logging verbatim, and it comes from two dif So the string is a payload, not a key, and `$errorInfo` is the key. It publishes a `PlaybackErrorInfo` beside the state: a `PlaybackErrorKind` naming what failed in a form that survives a locale and a release, plus the underlying `NSError` domain and code wherever a Foundation / AVFoundation failure is involved. A non-nil `underlyingDomain` also marks the messages whose text the OS has localized. +A failed custom-source probe publishes `.customSourceProbeFailed` with the probe error's `underlyingDomain` and `underlyingCode` when available. That information is set before the terminal `.error` state is delivered, so a state observer can read the cause from `errorInfo` without parsing the message. + Two kinds carry a number a host will want to read, and both mean the same thing happened: the origin answered the source request with an HTTP status instead of media, and `underlyingCode` is that status. `.sourceRefused` is the origin's verdict on the resource or on itself (a 401/403 refusal, which on a connection-capped IPTV panel most often means "the slot is still held", a 404, a 5xx). `.sourceRateLimited` is the same answer in the rate-limit shapes (429/503/509), split off because the recovery differs: the source is being metered, not lost, so the same request is expected to work later and a handoff to a second player meets the same meter (AE#377). Both are distinct from `.sourceOpenFailed`, which is what a corrupt or unreadable source produces; before `.sourceRefused` existed a refusal and a corrupt file arrived alike as "Invalid data found when processing input". `.sourceCertificateRejected` is the same argument one layer lower: the transport was refused over certificate trust, so there was never a response to carry a status. `underlyingCode` is the `NSURLErrorDomain` code (-1200 through -1206), and the message is the engine's own English sentence rather than the OS one, so a pasted report says the same thing on every device. It reaches a host from either path: on the FFmpeg path the reader types the failed open, and on the native path the URL error is found under AVFoundation's own error, which is where it sits and where nothing used to look. Nothing about the media is wrong and no retry helps; a self-signed or private-CA origin needs a trust decision the host makes (AE#495). @@ -68,6 +70,12 @@ player.$state It is assigned before `state`, so a `$state` sink reads this failure's own info rather than the previous one's, and it is cleared by the state's move away from `.error`, so the two cannot drift. Substring rules over the message instead bucket every non-English device into "other". +Software live source read failures, including an interrupted verified replay, +report `liveSourceUnavailable` rather than `softwarePipelineFailed`. This is a +source continuity failure, not evidence that the codec requires a different +engine. Hosts choose retry timing through their existing live recovery policy. +The software route's error remains available through `$errorInfo` and `.error`. + ### `.ended` is terminal `.ended` means the source played to completion, on any backend. It is not a pause at the last frame: @@ -85,9 +93,53 @@ The clock stops with it, on both backends: `clock.currentTime` and `clock.source player.liveSourceReset // PassthroughSubject; subscribe per session ``` -Live's counterpart to a terminal `.error`, and a host that plays live has to subscribe. It fires where the session cannot be revived from inside the engine and only a new `load` can: a source restarted from byte 0 (a transcode respawn), a playlist still frozen after the stall ladder's last reload rung (#65), an in-engine reopen transport whose budget is spent (#199). Production is halted before it fires. - -Answering it: negotiate a fresh URL and `load` again, or, where the URL is fixed (an IPTV channel), load the same one again. Guard the answer with one retune in flight, a minimum spacing and a bounded count per session, then surface the exhausted case the way a terminal `.error` would be surfaced, because a ladder that ends on a silent `return` leaves the same dead channel behind a counter. +An interrupted exact replay first tries the bounded in-engine source reopen when +there is a URL or fresh-reader factory. It retains the same cache, player item and +bounded exact-packet history, so media already in the DVR window is not appended +again even when the viewer is behind live. The failed connection is retired before +opening the replacement. A changed track layout or ordinary source loss that +exhausts in-engine recovery requests host negotiation through this subject. +Verified replay that cannot reach new media also ends here by default. A host that sets +`LoadOptions.hostRetriesExhaustedLiveReplay` gets `liveSourceReplayExhausted` below +instead, so its own retry keeps the retained evidence rather than a full load discarding it. +A complete overlap continues in place; an ambiguous clock reset retains ordinary +discontinuity handling. Fresh-source recovery ends an active recording with +`sourceReset` rather than silently splicing a new source into the old file. + +A live host subscribes to this event when acquisition cannot continue under the +engine's bounded recovery round, or the stalled consumer requests renewed source +acquisition. After its own backoff, first try `retryLiveSourceRecovery()`: a +previously productive native live session can renew its source while retaining +its DVR timeline, including before any replay has been detected. A `false` return +requires fresh negotiation (for example a changed track layout or a custom reader +without a reopen factory); use a bounded full-load policy for that case. + +Keep one recovery in flight. Do not turn ordinary source loss into a decoder +compatibility failure merely because an origin remains unavailable. + +### Live: exhausted verified replay + +`liveSourceReplayExhausted` is a per-session subject for native HLS recovery that +cannot reach new media after verifying previously admitted packets. It fires only for a +session loaded with `LoadOptions.hostRetriesExhaustedLiveReplay = true`; without it the same +exhaustion publishes `liveSourceReset`, so a host that only knows that event still retunes. Production +parks while cached DVR media and replay history remain available. This is a +source recovery event, not a codec failure or a requirement to show an error. + +After its own backoff, a host can call `retryLiveSourceRecovery() -> Bool` to +resume source acquisition into the same cache and consumer item. It returns +`true` when that retained session accepts the request or has a retry in flight, and +`false` after stop/replacement, on unsupported routes, or when a changed track +layout requires fresh negotiation. Concurrent calls coalesce. A stalled live producer can also be renewed through +this method: its reader is cancelled and its pump must finish before history is +transferred to a replacement. A new exhaustion +publishes the subject again; retry delays, cancellation and any overall limit +belong to the host. Calling `load` or switching decoders instead discards this +history and can replay the old broadcast. + +Once a session has verified replay, later source-open exhaustion keeps this same +retained recovery contract even if an earlier reconnect produced new media. +A changed track layout still uses `liveSourceReset` for fresh negotiation. ### Live: a resume that had to move @@ -513,6 +565,7 @@ try await player.reloadAtCurrentPosition() | --- | --- | | `load(url:startPosition:options:audioSourceStreamIndex:discTitleID:)` | `async throws -> SourceProbe?`. Discardable. Tears down any running session first. | | `load(source:startPosition:options:audioSourceStreamIndex:discTitleID:)` | Same, for `MediaSource.url` or `.custom(IOReader, formatHint:)`. A custom source whose initial probe fails throws, since it cannot be reopened by URL. | +| `DiscDirectoryReader`, `HTTPDiscDirectoryReader` | A Blu-ray ripped as a `BDMV` folder, for `.custom(reader)`: `discFiles` lists the files (root-relative path and size), `openDiscFile(_:)` opens one, `preferredPlaylist` optionally names the title's `.mpls`. `HTTPDiscDirectoryReader(files:preferredPlaylist:httpHeaders:)` serves each `File` (path, size, url) from its own `Range` origin. See [Blu-ray folders](formats.md#disc-dvd--blu-ray-iso). | | `reloadAtCurrentPosition()` | `async throws`. Background reopen at the current position, preserving options. Session-preserving: it finishes an installed audio tap and keeps the native host where it can. It also preserves the session's TRANSPORT rather than replaying `autoplay`, so a session that was playing comes back playing and one that was paused comes back paused, whatever the mount was given (AE#464 round 2). A `play()` or `pause()` that arrives while it runs is the newer word and decides how it comes back. The one exception is the resume after a background teardown, which has no transport left to read and is the host's call, so there the mount flag still decides. | | `prepareForItemReplacement()` | One-shot. Keeps the current native `AVPlayerItem` attached until the next `load()` replaces it atomically, for a host that mounts the engine's own player layer and would otherwise show a black layer across the nil-item gap of a foreground episode or playlist change. Consumed by the next `load()`, cancelled by `stop()`, no effect when the outgoing session is not native. PiP hosts do not need it: an active PiP window already forces the handover (AE#158). | | `stop(resetDisplayCriteria:finalTeardown:)` | Ends the session, `state` becomes `.idle`, `startupProgress` becomes nil. `resetDisplayCriteria: false` keeps the panel in its current mode across an item handoff. | @@ -567,6 +620,11 @@ police, so a controlled probe does not run it. An untagged 10-bit HEVC source wh Dolby Vision record therefore comes back without one from `probe(url:limits:)` while `probe(url:)` synthesizes it. Probe that class of source without limits, or treat the absence as unconfirmed. +`probe` blocks its thread until the native call returns. A detached task is no background thread +(it runs on the Swift cooperative pool, one thread per core), so a host that probes several +sources at once is better served by a GCD queue or a `TaskExecutor` of its own; the engine's own +detached work goes through one (see Architecture, "Blocking work and the cooperative pool"). + ```swift let cancellation = ProbeCancellation() let worker = Task.detached { @@ -628,9 +686,11 @@ Warms are serialised, one at a time across the process. A second `prewarm` while | --- | --- | | `play()` | Rewinds first when parked at the final frame of a VOD; a no-op on `.ended`. | | `pause()`, `togglePlayPause()` | | -| `seek(to:)` | `async`. Source-axis seconds. Rejected when idle, errored, ended, or live without a DVR window. A paused software-video seek presents the target picture while keeping transport and audio paused. | +| `seek(to:)` | `async`. Source-axis seconds. Rejected when idle, errored, ended, live without a DVR window, or on a forward-only VOD source (`SeekEvent.Rejection.sourceNotSeekable`, without a false landing; a seek queued during load drops its optimistic clock too). A native seek reports a landing only when AVPlayer completed it within 0.75 s of the target; an interrupted or clamped seek is not a landing. A paused software-video seek presents the target picture while keeping transport and audio paused. | +| `canSeek` | Whether the ready session accepts a seek. Live needs retained DVR history, remote HLS a measured item range, VOD a byte source proven seekable: a container duration alone is not proof. | +| `isSourceSeekable` | `@Published Bool?` for this load: nil is unknown or AVFoundation-owned, false forward-only, true a seekable byte source. A forward-only VOD ignores a saved `startPosition` and mounts at 0. Cleared by `stop()`. | | `seek(toSourceTime:)` | Deprecated alias for `seek(to:)`. The clock is unified onto source PTS, so the two are the same call. | -| `setRate(_:)` | Clamped to `maxSupportedRate`; `0` pauses. The speed holds across pause and resume and across the host rebuilds a session makes on its own (reload at position, audio-track switch, AirPlay LAN swap, background return), and it belongs to the item: loading a different source, or `stop()`, returns to 1.0. Pitch-preserving on both decode routes: `audioTimePitchAlgorithm` is pinned to TimeDomain on the native player item and on the software path's audio renderer, so a speed control never has to be gated on which route a title took. | +| `setRate(_:)` | Clamped to `maxSupportedRate`; `0` pauses. While the session is paused a non-zero rate does not resume it: it becomes the rate the next `play()` starts at, and `state` stays `.paused` (#730). The speed holds across pause and resume and across the host rebuilds a session makes on its own (reload at position, audio-track switch, AirPlay LAN swap, background return), and it belongs to the item: loading a different source, or `stop()`, returns to 1.0. Pitch-preserving on both decode routes: `audioTimePitchAlgorithm` is pinned to TimeDomain on the native player item and on the software path's audio renderer, so a speed control never has to be gated on which route a title took. | | `audioDelaySeconds`, `setAudioDelay(_:)` | Lip-sync correction for the viewer's chain, in seconds; positive presents audio later than video. Clamped to +/-2 s and, like `setRate`, it holds across the rebuilds a session makes on its own and belongs to the session. Applied where the engine still holds the timestamps: the stamped sample PTS on `.software`, the audio track of the fMP4 segments on `.loopback`. AVFoundation exposes no equivalent on either surface a host can reach, so on `.remoteBypass` and on audio-only sessions the value is kept for the next load and the no-op is logged rather than faked. Not free the way `setRate` is: the audio already decoded or already fetched is committed to the previous value and cannot be re-timed in place, so a change re-anchors at the playhead. On `.software` that is a seek to the current position; on `.loopback` it is the session-preserving reload, because seeking to the position AVPlayer already holds is a buffer hit and plays the old-offset segments out anyway. Measured on a 30 fps H.264 fixture: about 0.3 s of held picture on the loopback route, position preserved. A live session without a DVR window has no position to return to and takes the new value at the next seam it makes on its own. Presses arriving while a re-anchor is running are folded into it rather than stacking one re-anchor per press (AE#464 round 3), and a press that lands after the in-flight re-anchor read the value gets exactly one catch-up pass; the value does not ride the call, so the rebuild in flight delivers the newest one. Presses at a human cadence arrive after a re-anchor has finished and are each their own. A re-anchor or a `reloadAtCurrentPosition(applying:)` raised the moment a previous rebuild returned, before the new host has published a position, rebuilds at the position that rebuild was mounted at, not at the head (round 5). A call landing while the session is being rebuilt at all is neither applied nor refused: it is kept in the options the load in flight reads, and says so. | | `maxSupportedRate` | 2.0 for video, 3.0 audio-only. Query after load; returns 2.0 while idle. Size a speed picker against it. | | `volume` | 0.0 to 1.0. A write before a session exists is remembered and applied at load. | @@ -724,7 +784,7 @@ display drops the suppression and shows it. | --- | --- | | `$audioTracks` | `[TrackInfo]`. Republished when `LoadOptions.confirmAtmos` confirms a track. On `.remoteBypass` it lists the audio tracks AVPlayer built for the item (normally just the one playing), read from their format descriptions: `codec` in libavcodec's spelling (`eac3`, `ac3`, `aac`), `channels`, `sampleRate`, `profile` (AAC's object type; "Dolby Digital Plus + Dolby Atmos" with `isAtmos` when the E-AC-3 dec3 record announces JOC) and `language` from the track or the selected audible option. The ids are synthetic (from 400000 up) because there is no stream index on that route; compare them only with `activeAudioTrackIndex`. | | `$activeAudioTrackIndex` | The selected track's id. On `.remoteBypass`, the enabled item track's. | -| `selectAudioTrack(index:)` | Session-preserving reload. On the native path the old item stays mounted until its replacement is ready (not gapless; a media-services reset still discards it); elsewhere expect roughly 0.5 to 1 s of black. Rapid picks coalesce into one rebuild at a time, a pick back to the active track costs nothing, and `stop()` or a new `load` drops what is queued. It comes back in the session's transport like `reloadAtCurrentPosition()`: a paused session stays paused, and a `play()` or `pause()` that arrives while the rebuild awaits I/O decides the final state. `index` is `TrackInfo.id`. A no-op when out of range, already active, or on a forward-only custom source (live ingest included), which cannot rebuild its pipeline: there a track change is a fresh `load` naming the stream. Every refusal is logged, so a picker that does nothing is explainable. Also a no-op on `.remoteBypass`, where AVPlayer owns the audio selection and the list above is informational; a different language there is a different URL. | +| `selectAudioTrack(index:)` | Session-preserving reload. On the native path the old item stays mounted while the source reopens, and its last picture is held on the bound `AetherStillView` (or `AetherPlayerView`) across the item swap until the new item's first frame, so the switch shows a still rather than black (not gapless audio; nothing is held in PiP or on external playback, and a media-services reset still discards the item; see `AetherStillView` for the software path and Dolby Vision); elsewhere expect roughly 0.5 to 1 s of black. Rapid picks coalesce into one rebuild at a time, a pick back to the active track costs nothing, and `stop()` or a new `load` drops what is queued. It comes back in the session's transport like `reloadAtCurrentPosition()`: a paused session stays paused, and a `play()` or `pause()` that arrives while the rebuild awaits I/O decides the final state. `index` is `TrackInfo.id`. A no-op when out of range, already active, or on a forward-only custom source (live ingest included), which cannot rebuild its pipeline: there a track change is a fresh `load` naming the stream. Every refusal is logged, so a picker that does nothing is explainable. Also a no-op on `.remoteBypass`, where AVPlayer owns the audio selection and the list above is informational; a different language there is a different URL. | | `installAudioTap()`, `removeAudioTap()`, `audioTapHasDeliverySource`, `AetherEngine.audioTapFormat` | Opt-in decoded PCM, mono Float32 48 kHz with source-PTS stamps, off the render path. See the contract above. | ## Subtitles @@ -757,8 +817,15 @@ When an upstream server reanchors the played media, set `ExternalSubtitleTrack.n | --- | --- | | `$isLive` | Mirrors `LoadOptions.isLive` for the session. | | `$isSequentialOrigin` | True while a VOD session is served as a sequential origin, declared (`LoadOptions.sequentialOrigin`) or found by the reader (the origin ignores `Range`, or refused the ranged open twice and served a plain GET, AE#693). The session plays from the start, so a `startPosition` given to `load()` was not honoured, and a seek lands only inside what `$residentRanges` already holds. A host that needs the position reopens the source or tells the user. Set during `load()`, cleared on stop. | -| `seekToLiveEdge()` | `async`. | +| `seekToLiveEdge(offsetSeconds:)` | `async`. Lands `offsetSeconds` behind the usable edge (default 0, negative or nonfinite read as 0), clamped to retained media. Choosing a safety margin is the host's call. On a live-only session it drives the native item to its own seekable end minus the offset. | +| `currentItemLiveEdgeTime` | The native item's usable live edge on the display axis, nil before the item has a range and on the software route. While AVPlayer's range mirror lags behind retained history, only already-played contiguous resident media is admitted, never prefetched media. | +| `liveTargetDurationSeconds` | The TARGETDURATION the engine's own live playlist is serving; nil on remote HLS live, the software path and before the first playlist build. | +| `setNativeLiveDVRLimits(_:availableCapacityBytes:)` | Renews the native loopback session's DVR allowance without a reload or a second source: a `LiveDVRLimits` (`windowSeconds`, `maximumBytes`, `minimumFreeBytes`, `capacityValidUntil` on the `systemUptime` clock) plus the caller's capacity sample. Cache eviction, playlist sizing and producer admission share it. A missing, invalid or expired sample withdraws the optional history (`seekableLiveRange` goes nil) and a timer reclaims it even while playback is parked; renewal needs a fresh sample and deadline. The engine's own per-volume budget still applies on top. False on a software, remote or unready session. | +| `nativeLiveDVRMandatoryBytes` | The finite pinned playback payload that may exceed that allowance. Excludes init and subtitle data, muxer staging, AVPlayer's buffers, filesystem overhead and recordings. | +| `setSoftwareLiveDVRLimits(_:availableCapacityBytes:)`, `softwareLiveDVRBytes` | The same lease for the software live spool, which needs `LoadOptions.softwareDVRRetention`. Expiry withdraws seekable history and prunes at the next append, so it is not an immediate physical reclaim while no packets arrive. A feeder whose cursor was evicted re-anchors through its normal seek before pumping again; a newer seek, pause, stop or source change wins over that recovery. `softwareLiveDVRBytes` is the retained packet payload. | | `liveSourceReset` | The retune contract above. | +| `liveSourceReplayExhausted` | Verified replay exhausted one bounded recovery round. Cached DVR stays readable; retry via `retryLiveSourceRecovery()` under the host’s backoff without losing packet history. | +| Timestamp resets | On the native loopback path `currentTime`, the seekable range, item placement and seek targets keep the session's initial timeline shift when the origin resets its timestamps, so the display time stays continuous. `clock.sourceTime` stays the presented frame's source PTS for cue matching, so the two intentionally differ after a reset. | | `liveResumeClamped`, `LiveResumeClamp` | A resume that found the playhead outside the window and moved it; see above. | | `liveScrubThumbnail(atSessionSeconds:maxWidth:)` | Still on the live session axis, decoded from what the session already holds. A native session reads its DVR segment cache; a software session reads its DVR packet ring (#544), so a tuner channel the box decodes in software has a scrub preview too. | | `$playlistShiftSeconds` | Seconds the producer subtracted from source PTS. Published values already fold it back; exposed for hosts pairing their own samples against AVPlayer's raw clock. | @@ -1056,6 +1123,7 @@ say so on the tracker rather than working around it. | Symbol | Notes | | --- | --- | | `videoGravity` | Fill mode of whichever layer is mounted (`AVPlayerLayer` or the software display layer). Settable; this is the aspect-fit / aspect-fill control. | +| `AetherStillView`, `bindStillView(_:)`, `unbindStillView(_:)` | For a host that renders the native path through AVKit rather than `AetherPlayerView`. An audio-track switch swaps the item in place, and `replaceCurrentItem` blanks the player layer until the new item's first frame; the engine holds the outgoing picture over that gap on the bound still view (or, without one, on the bound `AetherPlayerView`). Transparent and input-free; place it above the video and below the host's chrome, e.g. at the top of `AVPlayerViewController.contentOverlayView`, and set its `videoGravity` to the host player's fill. The software path holds its renderer's last picture across the rebuild the same way. Dolby Vision without a displayable base layer (Profile 5, AV1 Profile 10) is held as a 960-wide still decoded from the resident segment through the scrub stills' RPU reshaping, which the switch waits for (up to 3 s, the outgoing picture paused meanwhile); other profiles hold their base layer. Nothing is held in PiP or on external playback. | | `nativePlayerLayer` | The engine's own `AVPlayerLayer`, for a host building `AVPictureInPictureController` around a layer rather than around `currentAVPlayer`. | | `$softwarePiPSource` | `SoftwarePiPSource` for sample-buffer PiP on the software path: the display layer plus transport answers on the enqueued frames' axis. iOS only in practice; tvOS AVKit does not evaluate sample-buffer content sources (FB9751461). | | `$softwareDisplaySize` | The rectangle the software path's picture presents at: coded size under the decoder's pixel aspect. Mirrored, not latched, so a mid-stream resolution change re-shapes it. nil on every other path. | @@ -1066,7 +1134,7 @@ say so on the tracker rather than working around it. | `presentationAxisMap` | `PresentationAxisMap`: `sourceSeconds(forItemSeconds:)`, `itemSeconds(forSourceSeconds:)`, `shiftSeconds(atItemSeconds:)`, `seams` (each a `PresentationAxisMap.Seam` of `itemSeconds` and `shiftSeconds`), `isEmpty`. Readable off the main actor. Cue times and `sourceTime` live on the source axis; `AVPlayerItem.currentTime()` lives on the item axis, and they differ by the producer shift. Returns nil rather than a guess where no axis is established. | | `setNativeVideoFrameTimeObserver(_:)` | Takes a `NativeVideoFrameTimeObserver`, called per muxed frame on both axes (`NativeVideoFrameTime`: `source`, `item`, `segmentIndex`, `isKeyframe`, `epoch`). Called on the producer pump thread in **decode** order, so `source` is not monotonic under B-frames. `epoch` rises process-wide. | | `setSoftwareVideoFrameTimeObserver(_:)`, `softwarePresentationTimebase` | The software-path equivalent, a `SoftwareVideoFrameTimeObserver` over `SoftwareVideoFrameTime` (`presentation`, `generation`), in ascending presentation order, on the same axis as the cues. `generation` moves on every renderer flush. | -| `FrameExtractor` | Off-playback stills: `thumbnail(at:maxWidth:)`, `snapshot(at:maxSize:)`, `prewarm()`, `shutdown()`, over a URL or an `IOReader`. Opens its own demuxer, so it needs a source that tolerates a second connection. | +| `FrameExtractor` | Off-playback stills: `thumbnail(at:maxWidth:)`, `snapshot(at:maxSize:)`, `prewarm()`, `shutdown()`, over a URL or an `IOReader`. Opens its own demuxer, so it needs a source that tolerates a second connection. `boundedSnapshot(at:maxSize:limits:cancellation:)` is the disposable form: one caller-supplied `ProbeLimits` / `ProbeCancellation` budget spans open, stream analysis, seek and decode, a stalled HTTP header included, and the result is a `BoundedStillFrame`. Use a fresh extractor, since an already-open context is refused rather than charged to the budget; the context closes on every outcome. | ## Now Playing and the audio session @@ -1086,6 +1154,9 @@ say so on the tracker rather than working around it. | `scrubThumbnail(atSeconds:maxWidth:)` | Cache-backed still for the active session, live or VOD. Decodes bytes the session already holds, so it opens no second connection and works on single-connection sources (debrid / torrent links, IPTV accounts capped at one request) where a second demuxer is refused. A native session decodes from its segment cache, a software session from its packet cache (VOD, AE#605) or its DVR packet ring (live, #544). A VOD target outside what is retained returns nil rather than the nearest retained frame. | | `vodScrubThumbnail(atSeconds:maxWidth:)`, `liveScrubThumbnail(atSessionSeconds:maxWidth:)` | The two arms, for callers that know which axis they hold. Both arms also serve software sessions: the live arm out of the DVR packet ring (#544), the VOD arm out of the packet cache its seeks land in (AE#605), keyframe to target, on the same axis `seek(to:)` takes. | | `supportsCacheBackedStills` | True while the session can serve `scrubThumbnail` without a second connection: any native session, a software live session, and a software VOD session reading a remote source. Gate the scrub-preview affordance on it: it reports capability, not per-frame availability, so a transient nil from `scrubThumbnail` while a segment is still being produced, or for a position the cache does not hold, is expected and means "time only, no image". False on a software session playing a local file, which keeps no cache because re-reading the file is free; `makeFrameExtractor()` serves that case. Before AE#605 this was false on every software session, live included. | +| `scrubPreviewFrame(atSeconds:refined:maxWidth:isCancelled:)` | The timestamped form of `scrubThumbnail`, for a preview that labels the frame it shows rather than the position asked for. Reads only resident native segments or software packets, never seeks playback and never opens a second source, and returns a `ScrubFrame`: the image, the measured `actualSeconds` on the same axis `seek(to:)` takes, `refined`, and the resident `validRange` the frame's run covers. `refined: false` stops at the first decoded frame (cached per segment at the same width); `true` decodes toward the target, and `refined` in the result means that decode reached it, not that the two times are equal. Missing, cancelled, replaced or stale work returns nil. Decode is bounded at 750 ms and 900 packets per request. | +| `scrubPreviewSourceGeneration` | A fresh `UUID` on every teardown, distinct across engine instances, so a host can fence a preview that resolved after its source went away. | +| `clearResidentPreviewFrames()` | Cancels in-flight resident previews and drops their cached approximations; playback media is untouched. | ## Certificate trust @@ -1123,6 +1194,39 @@ as well. ## Diagnostics +`LoadOptions.nativeVideoFrameDiagnostics` opts into decoded-frame observation on SDR native +loopback playback. It defaults to `false`; remote bypass, HDR, external playback, mobile +background activity, PiP (including its foreground transition), pause and seek are excluded. An additional `AVPlayerItemVideoOutput` +samples frame timestamps without suppressing the player layer or retaining pixel buffers. +`EngineLog` reports output progress, gaps/resumption and observation-task delays. A decoded +output gap is not proof of a physical screen freeze; unavailable output is reported explicitly, +and the observation never seeks, retries, changes decoder routing or publishes a playback error. + +`LoadOptions.nativeVideoFrameRecovery` separately opts into bounded recovery when an SDR +native-loopback output that previously yielded pictures stops advancing while the item clock +continues. It defaults to `false`; enabling diagnostics alone does not enable this policy. +Recovery enables the same sampling, excludes unavailable/stale observations and the modes above, +and uses the same bounded, current-position repair as missing-layer recovery. Short gaps are +observed without intervention; recovery does not promise to reconstruct source pictures that +never arrived. Healthy decoded progress, not a transient readiness flag after a swap, rearms it. +The `aetherctl play --native-video-frame-recovery` flag exercises the same policy. +`ReplayVideoBoundary` logs numeric counts of damaged, replaced and unreplaced pictures at +confirmed seams, separately from the number of duplicates removed. `superseded` counts +conflicting unflagged copies resolved within the verified pending batch; `untimed` counts +unpositioned fragments discarded from the held damaged boundary. Unrelated source +timestamp resets do not grant this authority. + +Native presentation recovery, also enabled by `nativeVideoFrameRecovery` and off by default, watches the player layer's readiness. If a previously +visible, attached video layer stays unready while foreground playback has both clock progress +and buffered media, the engine first seeks to its current position and can then replace the +consumer item in place. It preserves the live source, retained DVR and current position; a live +replacement is deferred when that position cannot be placed in retained media. Recovery is +bounded until a sustained healthy presentation rearms it. PiP, external playback, user pauses, +seeks, hidden surfaces and buffering are excluded. `pictureInPictureActive` must be set before +the PiP transition starts and cleared when it ends (also on a failed start), so a legitimately +unready inline layer is never treated as missing video. `EngineLog` reports readiness, buffer, +PiP/foreground eligibility and repair/resumption separately from optional decoded-output samples. + | Symbol | Notes | | --- | --- | | `AetherEngine.version` | The engine release this source descends from, as the string a published tag carries. SwiftPM resolves a package to a revision rather than to a tag, so an About panel or the header of a diagnostic log has nothing else to name the engine with. Between releases, and under a pin on an unreleased commit, it names the last published version the checkout descends from. | @@ -1148,6 +1252,11 @@ All flags default to safe values; the table is the full set. Depth for the media | `isLive` | false | Treat the source as live. Set it explicitly; duration-based auto-detection is too noisy. | | `dvrWindowSeconds` | nil | Timeshift window. nil means live-only and `seek` is a no-op. The window is a ceiling: the disk budget (a quarter of the free space, at most 2 GiB) bounds what is actually kept, so a long window on a high-bitrate channel or a small volume holds less than it asks for. With several engines running, each one's quarter is taken from the free space the others have not already claimed, so a tile added on a tight volume holds less history than the first one (AE#687). | | `liveJoinProfile` | `.standard` | A `LiveJoinProfile`. `.fastZap` collapses TARGETDURATION to the source GOP plus headroom for one 1.5 x longer (AE#670) so an IPTV join costs seconds instead of a full holdback. | +| `liveStartupGraceSeconds` | nil | `.fastZap` only: the extra wait after an eligible finalized window before the first serve. nil takes the observed segment duration clamped to 0.5 to 2 s, 0 serves as soon as the minimum media exists, invalid values fall back to nil. Bounded by the existing manifest deadline; a shorter grace can rebuffer early on an irregular source. | +| `liveStartupSingleSegmentMinimumSeconds` | nil | `.fastZap` only: lets ONE finalized segment at least this long start the session, instead of waiting for a second one, which on a long-GOP source is another whole GOP. nil keeps the two-segment minimum. Neither startup option changes segment cuts, TARGETDURATION, HOLD-BACK, `.standard` joins or the remote HLS bypass, and explicit holdback floors and cancellation still win. A shallow first playlist can rebuffer if the next segment is late; that tradeoff is the host's. `Scripts/test-long-gop-startup.sh` exercises it against paced long-GOP MPEG-TS on macOS AVPlayer. | +| `softwareDVRRetention` | nil | Opts the software live spool into `SoftwareDVRRetentionOptions` (`startupMaximumBytes`, `playbackCushionBytes`, `playbackCushionSeconds`) and so into `setSoftwareLiveDVRLimits`. nil keeps the default spool. | +| `liveStartupGraceSeconds` | nil | Optional extra grace after eligible finalized media on `.fastZap` loopback live joins. Zero admits immediately once the minimum is ready; nil or invalid values preserve the automatic policy. | +| `liveStartupSingleSegmentMinimumSeconds` | nil | Optional minimum duration for a single finalized segment to qualify for `.fastZap` admission. Nil, nonpositive or nonfinite values preserve the two-segment minimum. | | `clampsLiveResumeToWindow` | true | Whether `play()` may move a behind-live playhead by itself (edge snap on a live-only source more than 45 s behind, or a landing above the retained floor when a DVR window has slid past it). `false` hands the whole decision to the host, which then also owns the eviction case. | | `liveJoinStartsImmediately` | true | Cuts AVPlayer's stall-avoidance wait short once at the live join, over a buffer that is non-empty and at least 1.5 s deep, on an item that has reached `readyToPlay` (AE#684). The join tail no host can otherwise reach; default since 6.55.0 on a device A/B, see the live-join section. | | `liveBlockingReload` | nil (auto) | LL-HLS blocking-reload override for loopback live sessions. Auto derives eligibility from observed upstream cadence, which is what keeps a bursty relay off a `-15410` loop. | @@ -1155,7 +1264,7 @@ All flags default to safe values; the table is the full set. Depth for the media | `nativeRemoteHLSIngestFallback` | true | The #168 / #293 carriage recovery and the #363 401/403 bypass refusal recovery. Setting it false turns both off. | | `audioOnly` | false | Lean audio pipeline, no video machinery. Also set automatically when the probe finds no video stream. | | `audioBridgeMode` | `.surroundCompat` | Bridge encoder for codecs that cannot stream-copy into fMP4. `.surroundCompat` uses EAC3 for a source with more than two channels and FLAC for one with two or fewer (no surround to carry). `.lossless` uses FLAC up to 7.1 throughout and needs a sink that accepts multichannel LPCM. | -| `objectAudioRendering` | `.off` | TrueHD Atmos delivery. `.apac(SpatialSpeakerLayout)` renders a TrueHD Atmos track's objects into that speaker bed (`SpatialSpeakerLayout` 5.1.2, 5.1.4, 7.1.2, 7.1.4 or 9.1.6, positions described by `SpatialSpeaker`) and delivers it as lossy APAC, which reaches an Atmos receiver as Dolby MAT with its heights; see `ObjectAudioRendering` and [formats.md › TrueHD Atmos (object rendering)](formats.md#truehd-atmos-object-rendering). TrueHD without Atmos, OS versions before 26 (iOS, tvOS, macOS and visionOS 26), and any start-up failure keep `audioBridgeMode`. | +| `objectAudioRendering` | `.off` | TrueHD Atmos and DTS:X with heights (#731). `.apac(SpatialSpeakerLayout)` decodes the Atmos objects, or DTS:X's heights and objects, renders them into that bed (`.l512`, `.l514`, `.l712`, `.l714`, `.l916`) and delivers Apple Positional Audio, which tvOS sends to an Atmos receiver as Dolby MAT and iOS plays as Spatial Audio. Lossy (320 kbps per bed channel) in place of the lossless 7.1 the bridge delivers, so it is the host's choice. Only TrueHD that FFmpeg marks Atmos, and DTS-HD Master Audio that LibDTSX confirms as DTS:X on its first frames (whatever FFmpeg's label), at 48 kHz, on OS 26+; anything else, or any failure to start, keeps `audioBridgeMode`. With it on, the automatic audio pick prefers a TrueHD Atmos or DTS:X-labelled track over the other tracks of the same language (of the `preferredAudioLanguages` match, or of the default track when no preference decides), never across a language or dub and never over `audioSourceStreamIndexOverride`, and only where the bed can be rendered (a VOD video session off the software path, on OS 26 or later). `SpatialSpeaker` names the positions. See `ObjectAudioRendering`, [formats.md](formats.md#truehd-atmos-with-heights) and [DTS:X](formats.md#dtsx-with-heights). | | `confirmAtmos` | false | Background per-track JOC confirmation, republishing `audioTracks` as tracks confirm. Never on the start path; skipped for live and forward-only readers. | | `preferredAudioLanguages` | empty | First-frame audio pick from the engine's single probe. Ordered BCP-47 / ISO 639 tags; region and script are normalized and rank within one preference (#590). An explicit `audioSourceStreamIndex` still wins. | | `preferredSubtitleLanguages` | empty | Post-load subtitle activation on the host-overlay path. Ranks language specificity (an explicitly opposite script is rejected, not demoted) before the descriptor axis. Pure convenience: no reload and no pre-probe, unlike the audio equivalent. | @@ -1177,16 +1286,19 @@ All flags default to safe values; the table is the full set. Depth for the media | `forceDolbyVisionOnNonDVDisplay` | false | **Experimental (AE#455).** On a display with no Dolby Vision of its own, serve an HEVC Profile 8.1 source the way a Profile 5 source is served (`dvh1` sample entry, `dvcC` rewritten to profile 5 / compatibility 0, `CODECS="dvh1.05.LL"`), so AVPlayer composes the RPU itself instead of handing the panel the static-metadata HDR10 base layer. The bitstream is untouched; only the container's claim about it changes. Ignored on a display that does Dolby Vision, and Profile 8.1 only. See [formats.md](formats.md#dolby-vision-signaling) for what it buys and what it risks. | | `dolbyVisionHandling` | `.automatic` | A `DolbyVisionHandling`. `.baseLayerOnly` presents the HDR10 / HLG base layer of a Dolby Vision source and leaves the Dolby Vision out of the container on every display: plain `hvc1` / `av01` sample entry, `dvcC` stripped, no `SUPPLEMENTAL-CODECS`, HDR10 / HLG display criteria, `videoFormat` reads the base layer's format while `sourceVideoFormat` and `sourceDVProfile` keep saying what the file carries. The route a host offers as "Dolby Vision: off (HDR10)", for a source whose Dolby Vision is wrong and whose base layer is right: the reported shape is a remux carrying a Profile 7 RPU under a container record claiming Profile 5, where a player that believes the record decodes YCbCr as IPT and the picture comes out green / violet. Applies to HEVC Profile 7 / 8.1 / 8.4, AV1 Profile 10.1 / 10.4, and a Profile 5 (or AV1 10.0) record whose VUI declares a BT.2020 YCbCr PQ or HLG base; a Profile 5 whose VUI is unspecified carries IPT-PQ-c2, has no base layer to present, keeps its route, and the engine says so in the log. Takes precedence over `forceDolbyVisionOnNonDVDisplay`. A tuning field, correctable through `reloadAtCurrentPosition(applying:)`; a Profile 5 record the VUI contradicts also stops refusing the software path under it. See [formats.md](formats.md#dolby-vision-signaling). | | `preferredDecodePath` | `.automatic` | A `DecodePath`. `.software` serves this source through `SoftwarePlaybackHost` whatever the routing concluded, scoped to this session and costing the source nothing (seeks, the audio switch and the title switch all keep working). The escape for the formats `VTCapabilityProbe` deliberately cannot classify, and for live H.264 / HEVC, which never reaches that gate at all. One-way: there is no `.native`. See [Overriding the decode path](#overriding-the-decode-path). | +| `hostRetriesExhaustedLiveReplay` | `false` | The host owns the retry after a verified live replay exhausts the in-engine reopen: the engine publishes `liveSourceReplayExhausted` and holds production until `retryLiveSourceRecovery()`. `false` publishes `liveSourceReset` for the same exhaustion. | | `escalatesToSoftwarePath` | `true` | Whether a native session AVPlayer refuses on its merits (`CoreMediaErrorDomain`), or a live join without an entry point the native route can open (`AetherEngine.LiveJoin`, AE#627), may be rebuilt once on the software path (AE#561). `false` surfaces the failure as `.error` instead, for a host with its own fallback ladder (AE#629). Correctable. | | `sharedOutputRole` | `.primary` (default) or `.secondary` | A `SharedOutputRole`. A secondary engine never writes display criteria and never owns Now Playing, whatever `suppressDisplayCriteria` and `ownsVideoNowPlayingSession` say, on the audio-only path too. It also skips the play gate's wait for a criteria write and the panel readout (`criteriaPanelReadout` is nil, as for any suppressed load), so its HDR labelling relies on `panelIsInHDRMode`. The role is fixed for a session, but a later `load()` may change it: as an identity field it only blocks corrections (Sodalite#175). A host that opted into `ownsVideoNowPlayingSession` and changes the role without a `stop()` keeps the native host's original Now Playing ownership until the next stop. | | `deinterlaceMode` | `.auto` | A `DeinterlaceMode` for the software path: the Metal / VideoToolbox graph with a CPU bwdif fallback, or `.software` to force the CPU path. | | `deinterlaceFieldRate` | `.field` | A `DeinterlaceFieldRate`: the hardware deinterlacer emits one frame per field (25i to 50p) or per frame. The software fallback is always frame rate, because doubling a CPU bwdif is the wrong trade and a fallback should not change cost class. | | `probesize`, `maxAnalyzeDuration` | nil | Caller-bounded open-time probe budget (defaults 50 MB / 60 s). They fail **open**: an over-tight budget loads with late-resolving tracks silently missing rather than throwing, so validate track presence if you tighten them. Do not pass `0` for `maxAnalyzeDuration`; FFmpeg maps it to a shorter heuristic. | +| `progressiveSegmentDelivery` | false | Serve each VOD loopback segment while it is being written: the muxer flushes a fragment about every half second and the loopback server sends each one as it lands, so AVPlayer shows and starts on a segment's first fragments instead of waiting for its cut. Changes nothing on a source fast enough to cut segments before AVPlayer asks; on a slow link it removes a whole segment's download from startup and from a seek outside the buffer. A segment the producer abandons (restart, failed cut) ends its connection without the final chunk, so AVPlayer asks for it again. VOD only; ignored on live, `nativeRemoteHLS` and the software path. | | `forwardBufferSegments` | nil (10, about 40 s) | How far the producer may race ahead and how much the cache keeps resident. Clamped to 4...2700; past the historical 150 the real bound is the session's disk budget, so a "buffer without limit" option can pass `Int.max`. Ignored on `nativeRemoteHLS`. Native HLS retention is readable as `$residentRanges` (see Time). Software VOD uses the same forward-window and volume-budget policy for compressed packet read-ahead; its continuous selected A/V frontier is `bufferedPosition`, not native `residentRanges`. | | `sequentialOrigin` | false | Declare an origin that fabricates range answers: one long-lived unranged GET, no ranged probes, non-seekable pb. **Seeking is unavailable**; re-request the archive at a shifted start instead. A URL source the reader finds forward-only by itself (`Range` ignored, so it can only stream front to back; the open confirms a 200 answer with a one byte range, because some CDNs answer a cache miss that way) is served this way without the declaration when its container states a duration, which a stated `Content-Length` lets an MPEG-TS source estimate; `loadedOptions` then reads `true` with that duration declared, and without a duration it stays on the software path. An AirPlay hop on such a session swaps the item onto the LAN address instead of reopening the source, since a reopen could only start again from byte 0. | | `declaredDurationSeconds` | nil | Trusted duration, overriding the container's. Required alongside `sequentialOrigin` on VOD, where the tail read is gone. | | `maxConcurrentSourceRequests` | nil | Most requests the reader may have open against this origin at once, across every path it fetches on (pump ranges, detour blocks, size probes, tail prefetch, subtitle side reader, and the HLS live ingest's playlist, segment and key fetches, whose prefetch window narrows to it, AE#678). nil counts without capping and lowers the ceiling on its own after a 429/503/509. Set it when the provider states a limit; `1` also switches off the speculative parallel paths, which exist only to overlap with the pump. Counts **requests**, not TCP connections, because over HTTP/2 a session multiplexes every request onto one connection while the origin still counts each one (AE#377). It is also the only ceiling: several engines playing from one origin are bounded by this value and by what the origin refuses, not by a transport pool underneath it (AE#450). | -| `heldSourceConnection` | false | Ask the source **once** and pull it, instead of ending the connection at the reader's window high water and asking again every 8 to 16 MB of drain (AE#377). For an origin that punishes repeated requests rather than concurrency: some CDNs refuse new requests for minutes at a stretch while serving an already open connection at full rate, and against one of those the request cadence is the defect, at any range size (measured at the reporting origin: 32 MB ranges raised to 256 MB, eight times fewer requests, the refusals unchanged). Where `maxConcurrentSourceRequests` bounds how many requests are in flight, this removes the second request. The read path is the engine's own HTTP/1.1 over a demand-driven stream task, so: **HTTP/1.1 only** (no ALPN, an HTTP/2-only origin is out of scope), the **system proxy configuration does not apply**, and TLS is the OS's through the same host trust decision as every other engine session but has not been exercised against a self-signed origin. A viewer who pauses ends the connection after five seconds and resuming costs one request at the frontier, because a held flow nobody reads is the process-wide Network.framework starvation of AE#310. Applies to the playback reader; the subtitle and enrichment side readers keep the default transport, since they park for minutes at a time. The open-time detection of an origin that ignores `Range` (see `sequentialOrigin`) does not cover it, because its open is open-ended. **Names the session**: the transport is chosen at open, so a reload that changes it is refused. | +| `sourceOpenPolicy` | `SourceOpenPolicy()` | HTTP VOD opening budgets for the playback reader and its reopens: `firstByteTimeout` (15 s) bounds the first data wait, `sizeProbeTimeout` (25 s) bounds the one retry and the whole size discovery, slot waits included. Nonpositive or nonfinite values take the defaults, anything above 120 s is capped. A request that gets no response is retried once with an open-ended Range and that connection stays the playback connection; two unanswered requests fail as `.sourceOpenFailed` instead of demoting the source to forward-only. A real length-less or Range-ignoring response keeps the ordinary sequential handling. Single-request origins run the size probes serially, others race them and join the losers before playback starts. Live, `sequentialOrigin`, remote HLS and disposable probes keep their own budgets. | +| `heldSourceConnection` | false | Ask the source **once** and pull it, instead of ending the connection at the reader's window high water and asking again every 8 to 16 MB of drain (AE#377). For an origin that punishes repeated requests rather than concurrency: some CDNs refuse new requests for minutes at a stretch while serving an already open connection at full rate, and against one of those the request cadence is the defect, at any range size (measured at the reporting origin: 32 MB ranges raised to 256 MB, eight times fewer requests, the refusals unchanged). Where `maxConcurrentSourceRequests` bounds how many requests are in flight, this removes the second request. The read path is the engine's own HTTP/1.1 over a demand-driven stream task, so: **HTTP/1.1 only** (no ALPN, an HTTP/2-only origin is out of scope), the **system proxy configuration does not apply**, and TLS is the OS's through the same host trust decision as every other engine session but has not been exercised against a self-signed origin. A viewer who pauses ends the connection after five seconds and resuming costs one request at the frontier, because a held flow nobody reads is the process-wide Network.framework starvation of AE#310. Applies to the playback reader; the subtitle and enrichment side readers keep the default transport, since they park for minutes at a time. The open-time detection of an origin that ignores `Range` (see `sequentialOrigin`) does not cover it, because its open is open-ended. A finite HLS VOD on the HEVC-in-MPEG-TS ingest (AE#268) is covered too (AE#732): playlist, key and segment requests run over one persistent HTTP/1.1 connection per origin, reused across segments and fetched one at a time, for origins that refuse h2 or new connections but serve consecutive requests on one keep-alive connection; a new connection opens only on a server close, an origin change, or a seek that abandons a body, and the log names each connection's protocol and request count. **Names the session**: the transport is chosen at open, so a reload that changes it is refused. | | `autoplay` | true | False mounts paused: the load skips the terminal `play()` and settles at `.paused` for a host that resumes later. It describes THIS MOUNT and nothing after it: the rebuilds a session makes on its own (`reloadAtCurrentPosition`, an option correction, the AirPlay LAN swap, an audio-delay nudge) come back in the transport state the session is in, not in this one. Correcting it through `reloadAtCurrentPosition(applying:)` therefore does nothing (the log names it as not applied rather than as applied, AE#464 round 3, and the call returns it as `sessionOwned` with `rebuilt` false rather than spending a teardown on it, AE#464 round 4); call `play()` or `pause()` instead. | ## Value types @@ -1211,15 +1323,18 @@ All flags default to safe values; the table is the full set. Depth for the media | `AudioTapBuffer` | `buffer` (`AVAudioPCMBuffer`), `sourceTime`, `discontinuity`. Non-discontinuity buffers are strictly increasing and non-overlapping, which is what SpeechAnalyzer's input timeline requires. | | `LiveTelemetry` | The 1 Hz snapshot: bitrates, observed fps, dropped frames, cache and network bytes, A/V gap, RSS. | | `PlaybackErrorInfo` | `kind`, `underlyingDomain`, `underlyingCode`, `message`. Published as `$errorInfo` beside a `.error` state. | -| `PlaybackErrorKind` | The stable token inside it: `.sourceOpenFailed`, `.sourceRefused` (the origin answered an HTTP status other than a rate limit instead of media; `underlyingCode` is the status), `.customSourceProbeFailed`, `.liveSourceUnavailable`, `.hlsPlaylistOnRawLivePath`, `.dolbyVisionRequiresHardware`, `.demuxedAudioLiveUnsupported`, `.nativeItemFailed`, `.noPlayableTrackWithinBudget`, `.masterPlaylistRejected`, `.vodSourceFailed`, `.sourceRateLimited`, `.softwarePipelineFailed`, `.audioSessionFailed`, `.reloadFailed`, `.liveReloadNeverReady`, `.audioTrackSwitchFailed`, `.audioBridgeProducedNoOutput`, `.sourceCertificateRejected` (the transport was refused over certificate trust; `underlyingCode` is the `NSURLErrorDomain` code, AE#495). `.sourceRateLimited` is the one to branch on separately: the source is being metered, not lost, so the same request is expected to work later and a handoff to a second player will meet the same refusal (AE#377). `.audioBridgeProducedNoOutput` is the other: a source whose audio has to be transcoded into fMP4 (MP3, MP2, DTS, TrueHD, Vorbis, PCM) produced no encoded audio at all, so the mp4 muxer could not build the sample entry it derives from a written packet (AE#396). It used to arrive as `.vodSourceFailed`, which reads as a dead source and ends a fallback ladder; the source is neither gone nor unreadable here, and a second player that decodes the track itself plays the file, so this is a DEMOTE, not a stop. A string-backed struct rather than an enum, so a kind added in a minor release cannot break a host's switch; raw values are API and do not change. | +| `PlaybackErrorKind` | The stable token inside it: `.sourceOpenFailed`, `.sourceRefused` (the origin answered an HTTP status other than a rate limit instead of media; `underlyingCode` is the status), `.customSourceProbeFailed`, `.liveSourceUnavailable`, `.hlsPlaylistOnRawLivePath`, `.dolbyVisionRequiresHardware`, `.demuxedAudioLiveUnsupported`, `.nativeItemFailed`, `.noPlayableTrackWithinBudget`, `.masterPlaylistRejected`, `.vodSourceFailed`, `.sourceRateLimited`, `.softwarePipelineFailed`, `.audioSessionFailed`, `.reloadFailed`, `.liveReloadNeverReady`, `.audioTrackSwitchFailed`, `.audioBridgeProducedNoOutput`, `.storageExhausted`, `.sourceCertificateRejected` (the transport was refused over certificate trust; `underlyingCode` is the `NSURLErrorDomain` code, AE#495). `.sourceRateLimited` is the one to branch on separately: the source is being metered, not lost, so the same request is expected to work later and a handoff to a second player will meet the same refusal (AE#377). `.audioBridgeProducedNoOutput` is the other: a source whose audio has to be transcoded into fMP4 (MP3, MP2, DTS, TrueHD, Vorbis, PCM) produced no encoded audio at all, so the mp4 muxer could not build the sample entry it derives from a written packet (AE#396). It used to arrive as `.vodSourceFailed`, which reads as a dead source and ends a fallback ladder; the source is neither gone nor unreadable here, and a second player that decodes the track itself plays the file, so this is a DEMOTE, not a stop. `.storageExhausted` is neither: the volume holding the loopback segment cache (the temporary directory) filled up and no segment could be written (`underlyingCode` is `-28`, `AVERROR(ENOSPC)`), so the source, its audio and every other player are fine, and the same load succeeds once space is freed. It used to arrive as `.vodSourceFailed` or `.audioBridgeProducedNoOutput`. A string-backed struct rather than an enum, so a kind added in a minor release cannot break a host's switch; raw values are API and do not change. | | `DisplayCapabilities`, `StartupProgress`, `SeekEvent`, `PresentationAxisMap`, `NativeVideoFrameTime`, `SoftwareVideoFrameTime`, `SoftwarePiPSource`, `SystemCaptionRequest`, `AetherEngineError`, `HLSIngestError` | Covered in their sections above. | +| `LiveDVRLimits`, `SoftwareDVRRetentionOptions` | The live DVR lease and the software spool's opt-in bounds; covered in Live and DVR. | +| `ScrubFrame` | `image`, `actualSeconds`, `refined`, `validRange`. Returned by `scrubPreviewFrame`. | +| `BoundedStillFrame` | `image`, `actualSeconds`. nil `actualSeconds` means the decoded frame carried no PTS, so the caller labels the requested time rather than claiming a measured one. | | `FontAttachment` | Attached font files for authored ASS rendering: `filename`, `mimeType`, `data`. | ## Public but not host API Public for the CLI, the test suite, or a diagnostic overlay, and outside the shape this reference documents. They stay source-compatible under semver like everything else, but nothing here should carry playback logic: -- **Test hooks**: `setForceSoftwarePathForTesting`, `setSourceThrottleKbpsForTesting`, `setSoftwareBackgroundAudioOnlyForTesting`, `softwareVideoFramesEnqueuedForTesting`, `setLargeAllocationCensusEnabled`, `forceStalledConsumerReloadForTesting`, `stallRendererClockForTesting`, `rendererClockRateForTesting`. +- **Test hooks**: `setForceSoftwarePathForTesting`, `setSourceThrottleKbpsForTesting`, `setSoftwareBackgroundAudioOnlyForTesting`, `softwareVideoFramesEnqueuedForTesting`, `invalidateSoftwareVideoSessionForTesting`, `setLargeAllocationCensusEnabled`, `forceStalledConsumerReloadForTesting`, `stallRendererClockForTesting`, `rendererClockRateForTesting`. - **`playbackBackend`**: the internal rendering backend, exposed read-only for overlays. Hosts must not branch on it; `videoRoute` is the surface that answers the same question honestly. - **`HLSVideoEngine`** and its `DiagnosticStats`: the loopback session's own machinery, public because `aetherctl` drives it directly. - **`DiscInspector` / `DiscInspection`**, `DoviRpuConverter` and its probe, `AudioTapProbe`, `SoftwareDecodeProbeResult`, `A53SEIParser`: repro and inspection surfaces behind `aetherctl` subcommands. diff --git a/docs/architecture.md b/docs/architecture.md index c79baedd8..4f3ae8615 100644 --- a/docs/architecture.md +++ b/docs/architecture.md @@ -94,7 +94,7 @@ For a paused software seek, the decode loops run only until a frame at or after AV1+DV (Profile 10.0 / 10.1 / 10.4) routes through the native path on hardware-AV1 hosts via the `dav1` / `av01` track type plus the source's `dvvC` box. AV1+Atmos is genuinely rare in the wild (mastering still runs in HEVC overwhelmingly), so the SW pipeline's lack of Atmos passthrough is a theoretical limitation rather than a real one. AV1 capability registration is lazy and runs only when routing an AV1 source; loading H.264, HEVC or audio-only content does not consult it. The dispatch happens once at load time; hosts see a unified `@Published` state surface either way. -**Background audio (iOS).** When the app backgrounds while playing, the engine keeps audio going rather than tearing the pipeline down. The decision is a pure, unit-tested policy, `backgroundAction(isAudioBackend:hasSoftwareHost:keepVideoAlive:state:)`, driven from the `UIApplication` lifecycle observers; `keepVideoAlive` comes from `shouldKeepVideoAlive(enabled:pipActive:state:)` and is gated to iOS (tvOS always tears down, wedge-safe: a frozen decode session crossing a multi-hour suspension wedged `mediaserverd`). On the native path "keep audio alive" is just declining to tear down: `AVPlayer` under the `.playback` session keeps decoding. The software path has no `AVPlayer`, and its combined demux loop normally paces the whole loop (audio and video) on the video renderer's `isReadyForMoreMediaData`; once `AVSampleBufferDisplayLayer` stops draining in the background that gate never reopens and audio would starve. So the host enters `backgroundAudioOnly`: the loop drops video packets and paces on the audio renderer (`AudioOutput.isReadyForMoreMediaData`) instead, keeping `AVSampleBufferAudioRenderer` fed and the synchronizer advancing. On foreground return the flag clears, the video decoder and renderer flush, and video resyncs at the next keyframe with audio uninterrupted. Scope is the combined VOD loop (and live-without-DVR, which shares it); the DVR feeder loop is unchanged. Exercise it headless with `aetherctl bgaudio` (see [cli.md](cli.md)). +**Background audio (iOS).** When the app backgrounds while playing, the engine keeps audio going rather than tearing the pipeline down. The decision is a pure, unit-tested policy, `backgroundAction(isAudioBackend:hasSoftwareHost:softwareHostHasAudio:keepVideoAlive:pipActive:state:)`, driven from the `UIApplication` lifecycle observers; `keepVideoAlive` comes from `shouldKeepVideoAlive(enabled:pipActive:state:)` and is gated to iOS (tvOS always tears down, wedge-safe: a frozen decode session crossing a multi-hour suspension wedged `mediaserverd`). On the native path "keep audio alive" is just declining to tear down: `AVPlayer` under the `.playback` session keeps decoding. The software path has no `AVPlayer`, and its combined demux loop normally paces the whole loop (audio and video) on the video renderer's `isReadyForMoreMediaData`; once `AVSampleBufferDisplayLayer` stops draining in the background that gate never reopens and audio would starve. So the host enters `backgroundAudioOnly`: the loop drops video packets and paces on the audio renderer (`AudioOutput.isReadyForMoreMediaData`) instead, keeping `AVSampleBufferAudioRenderer` fed and the synchronizer advancing. On foreground return the flag clears, the video decoder and renderer flush, and video resyncs at the next keyframe with audio uninterrupted. A software host that renders no audio of its own never enters this mode (AE#739): the loop would have nothing to pace on and would drop the rest of the file within moments, parking the clock at end of media in the background, so such a session is released like a paused one and reloaded on return. The VideoToolbox session is rebuilt on every foreground return, because an iOS screen lock invalidates it and in audio-only mode nothing decodes video to notice. A loss observed while video is wanted (`kVTInvalidSessionErr` from a decode) is reported by `HardwareVideoDecoder.onSessionLost`; the host rebuilds the session and repositions to the playhead so the picture returns on the frame the audio is at, and owes the recovery to the next foreground return when it happens in the background or VT refuses the rebuild. Scope is the combined VOD loop (and live-without-DVR, which shares it); the DVR feeder loop is unchanged. Exercise it headless with `aetherctl bgaudio` (see [cli.md](cli.md)). **Live audio look-ahead + edge rebuffer (#107 audio chopping).** The DVR feeder loop shares the pacing coupling above: audio is interleaved behind the video renderer's back-pressure gate, so the audio renderer could never hold more than the video queue allows (<1 s measured). On devices where software 1080i decode + deinterlace runs near real time that margin is zero and every feeder stall is an audible dropout. The feeder therefore runs an audio look-ahead pump (`AudioLookaheadPolicy` + `AudioLookaheadState`): an independent ring cursor that decodes and enqueues audio packets ahead of the combined cursor until the renderer holds `targetLeadSeconds` (4 s) over the synchronizer clock, making audio delivery independent of video decode pace (a chronically slow video decode now degrades to late video frames under smooth audio, the right priority). DVR seeks reset the pump cursor alongside `setFeedCursor` (compare-and-set, seek wins). The same pump pass handles live-edge source underruns: when the source itself delivers below real time and the pump drains the ring at the edge, the free-running clock would otherwise outrun the stream permanently (every later sample lands in the clock's past, continuous chopping that never recovers). `AudioLookaheadPolicy.clockAction` pauses the clock at `underrunPauseLeadSeconds`, refills, and resumes at `rebufferResumeLeadSeconds`, mirroring AVPlayer's stall handling on the native path. A host seek does not ask the pump to do that on purpose: a software live landing nearer the reader's frontier than `rebufferResumeLeadSeconds` is held that far back (`AetherEngine.softwareLiveLanding`, Sodalite#104 round 3), because on a real-time source the lead arrives exactly as slowly as it is deep, so a landing at the frontier parks the clock for that long and resumes at the same distance behind it that the held-back landing starts from. Diagnose with `aetherctl play --audio-stats` (see [cli.md](cli.md)). @@ -164,6 +164,56 @@ Routes the host did not ask for: Branch on this where host behaviour differs per pipeline: who draws subtitles (AVPlayer on the bypass, the host's renderer on loopback and software), and whether a composited PiP overlay is meaningful at all. Observing it also makes the mid-session reroute an event rather than a log line. +## Byte-reader callback scheduling + +The AVIO reader, held HTTP transport and prewarm fetcher use independent serial +user-initiated URLSession delegate queues. These callbacks deliver playback bytes +and release origin-request tickets needed by foreground demux threads. A semaphore +wait cannot donate priority to an implicit utility callback queue. Held transport +work also runs at user-initiated QoS. + +Finite AVIO requests release their ticket in the completion callback, before the +synchronous caller resumes to process its result. A lock-guarded lease makes that +release idempotent against cancellation, early return and deallocation. Refusal +responses are charged to the origin before handing its slot to another reader. Persistent +and prewarm callbacks already return their tickets at completion. Per-origin caps, +FIFO ordering, pacing, cancellation drains and timeout/overcommit policy remain +unchanged; each session retains its own serial callback ordering. + +QoS is not an execution deadline. A VOD segment already in the cache may still +cross the slow-serve threshold while its serving thread is delayed. Its early +chunked header remains valid: the response carries the same cached bytes, and +the notification alone does not restart the producer. + +## Live replay boundary and video diagnostics + +Live packet admission also protects the outgoing transport boundary. A timed, flagged video +packet beyond admitted history is held while earlier intact pictures and audio continue. +Exact replay on the participating tracks can supply the clean returning frame; the flagged +packet is discarded only with that evidence. Good pictures released late by the outgoing +parser do not complete a track before its replay is traversed. Verified pending video is +ordered by decode timestamp, exact returning copies are removed, and the settling frontier +covers every retained good packet. An ambiguous boundary, EOF or read failure preserves its +packets and admitted history. A clean outgoing picture cannot release the boundary on its own. +The lookahead covers sparse-video cadence as well as the bounded source interval; the packet +count remains capped. Held intact pictures define a provisional replay horizon, while the +replacement for the damaged picture remains fresh media until admitted. Only committed +packets enter retained source history. Held-video packet count and source interval bound the lookahead; +transport and no-cut watchdog deadlines remain responsible for a source that stops delivering. + +Video diagnostics keep source packet cadence separate from native decoded-output progress. +The optional output observer belongs to one item/session, stops on teardown, excludes +ineligible playback modes and discards its state through positioning or inactive rendering. +It emits bounded progress summaries and gap episodes, without retaining pictures or making +recovery decisions. Hosts control whether to enable it and where to send its measurements. +The output is detached before a host-announced PiP transition and only reattached to a ready +inline layer after PiP ends. Native presentation repair uses layer readiness independently of +this optional output. Its bounded nudge/item-replacement sequence requires advancing playback, +resident buffer and an attached foreground surface; it does not reset source history or move a +DVR viewer to the live edge. In-place item replacement preserves the repair budget, which only +rearms after sustained healthy presentation. Encoded long-GOP H.264/AAC replay tests decode both +admitted software packets and remuxed fragments and compare every picture with the original. + ## Software VOD compressed packet cache Seekable software VOD read through one of the engine's byte readers has a @@ -273,6 +323,23 @@ struct TrackMenuButton: UIViewRepresentable { SwiftUI diffing can re-run `updateUIView` as often as it likes; the guard means an open menu only rebuilds on a real item change. Credit to [@ohjey](https://github.com/ohjey) for isolating the mechanism and the pattern (AetherEngine#29). +## Blocking work and the cooperative pool + +Engine code that blocks its thread (a demuxer open or packet read, a FIFO write under +backpressure, a `close()` that joins a pump, a `waitForFinish`) never runs on the Swift +cooperative pool. That pool has one thread per core and does not grow, so each blocked job takes +a core's worth of async work out of the whole process, the host app's included. A detached engine +task is therefore created through `BlockingWork.detached` (`BlockingWork.swift`), never +`Task.detached`: the task prefers `BlockingExecutor`, which runs its jobs on GCD's global queues, +and GCD adds a thread when one blocks. The task otherwise behaves as before (it awaits, hops to +the main actor, is cancelled). `BlockingWorkTests` pins both halves, and a test fails the build +of any `Task.detached` that comes back into `Sources/AetherEngine`. + +The trigger was CI: on a 3-core runner the suite parked all three pool threads for half a minute +at a time, until a 120 s time limit fired at 151 s because its watchdog is a task on the same +pool. `LIBDISPATCH_COOPERATIVE_POOL_STRICT=1` narrows the pool to one thread and reproduces that +on any Mac; the full suite has to pass under it. + ## Subtitle recognition scheduling Bitmap subtitle OCR awaits each image's recognition on a dedicated utility thread. @@ -442,13 +509,13 @@ Sources/AetherEngine/ │ ├── RemoteHLSTimestampAnchor.swift Where the origin's media timestamps sit against its playlist timeline, read from the head of the segment the load opens on, so the injected WebVTT carries an `X-TIMESTAMP-MAP` instead of landing early by the origin's PTS offset (#316) │ ├── RemoteHLSReadinessDeadline.swift The terminal state the bypass never had: an origin that answers everything while AVFoundation can build no track from what it serves, which no failure signal ever reports (#334) │ ├── RerouteVerdictMemory.swift Bounded, expiring memory of master URLs whose carriage watchdog fired, so a retune after an ingest death relands on the working path instead of re-paying a full mount plus grace (#199) -│ ├── SWClockAnchorPolicy.swift Where the SW demux loop anchors the synchronizer clock on the first decoded sample: verbatim for files and resumes (intrinsic A/V lead-in survives), at the sample for a mid-stream-joined source (#107) +│ ├── SWClockAnchorPolicy.swift Where the SW demux loop anchors the synchronizer clock on the first decoded sample: verbatim for files and resumes (intrinsic A/V lead-in survives), at the sample for a mid-stream-joined source (#107); a sample BEHIND the anchor is resume preroll and never moves it (AE#724) │ ├── SeekResumeIntent.swift Whether a seek on a demuxer-driven host re-arms the clock at `lastRate` or parks it at 0, for the second seek issued inside the window its predecessor cleared (#292) │ ├── SoftwareBufferFrontier.swift How far ahead of the clock the software path is actually holding decoded video, and how that folds into the `bufferedPosition` a host reads (#303) │ ├── SoftwarePiPSource.swift Everything a host needs to build an `AVPictureInPictureController` content source around the software path without AVKit entering the engine: the layer plus the four transport answers behind the sample-buffer delegate │ └── StartupReadinessGate.swift Outcome of one startup-readiness attempt: the reloaded item reached a playable state, died, or ran out the settle window without doing either ├── Network/ -│ └── HLSLocalServer.swift Native path: local HTTP server (all interfaces for AirPlay, every path behind a per-session token, loopback URLs handed to the local player) serving playlist + segments +│ └── HLSLocalServer.swift Native path: local HTTP server (all interfaces for AirPlay, every path behind a per-session token, loopback URLs handed to the local player) serving playlist + segments. It writes the master, so the audio rendition's attributes are decided here: `EXT-X-MEDIA:TYPE=AUDIO` carries `LANGUAGE` (AE#458) and `CHANNELS`, the latter answered by the segment provider (`"16/JOC"` for a stream-copied E-AC-3 JOC track, the served bed count otherwise) and omitted entirely when the provider has no rendition to attribute. An untagged track has no rendition unless it is a stream-copied JOC one, which gets one without `LANGUAGE` for the sake of its `CHANNELS` (AE#726) ├── Renderer/ │ ├── SampleBufferRenderer.swift SW path: AVSampleBufferDisplayLayer + B-frame reorder, HDR10+ attachments; `flush(removingDisplayedImage:)` holds the last frame through a seek (#90); the decode thread reaches the layer only through its `sampleBufferRenderer`, taken once on the main actor (#351) │ └── SubtitleFrameCompositor.swift Composites active cues into decoded software-path frames while PiP is active, since the system PiP window renders only the sample-buffer layer; playback wins, every failure path returns the original buffer untouched @@ -529,3 +596,90 @@ The `aetherctl` CLI target (`Sources/aetherctl/`) is documented separately in [d | VideoToolbox | System | Native path video decode (HW where available, Apple's bundled SW dav1d on iOS / macOS) | | AVFoundation | System | AVPlayer + AVDisplayManager (native path); AVSampleBufferDisplayLayer + AVSampleBufferRenderSynchronizer (SW path) | | CoreMedia | System | Sample descriptions, format-description tagging, CMTimebase | + + +### Exact overlap after a live source reconnect + +On the single-demuxer stream-copy path, rollback alone is never treated as proof +of replay. A rollback to a retained packet's DTS/PTS can open a provisional +candidate even if the first payload differs. Only exact DTS, PTS and compressed- +payload SHA-256 matches establish replay evidence. Candidate packets are buffered until both +tracks pass their previously admitted frontier, then old media is removed and +new media continues on the existing timeline. + +A reconnect can truncate a transport/PES packet. Immediately forwarding a whole +candidate after one mismatch replayed old pictures; immediately reopening after +that mismatch repeatedly met the same damaged boundary. A short unmatched run +including the first packet of either track is quarantined within a bounded +source-time interval and unmatched-packet count per track. Before any exact match on a +track, the first unmatched timestamp anchors that bound. Untimed packets remain +under the producer's overall byte/packet limits and source watchdog. Later exact matches, or crossing that track's old +frontier, complete the interval; discarding a candidate containing gaps also +requires distinct matching timestamps on every participating track. Prolonged +divergence, EOF, read failure and scan limits still interrupt a confirmed prefix +without forwarding it. A short unconfirmed programme boundary retains normal +discontinuity handling. A source clock reset with different content is never +classified as replay solely by its timestamps. + +A supported source reopens inside the same cache. Its fresh producer receives the +bounded accepted-packet history and source frontiers; a seek, channel change or +independent load starts without that history. The failed socket is retired before +the replacement opens. Changed track layouts request fresh host negotiation. +Bridged audio and separate side-audio sources remain excluded from paired replay +recognition. + +The cutter watchdog distinguishes a bounded overlap scan from a stuck cut while +still detecting source starvation. The guard belongs to the producer thread. +Repeated source loss parks acquisition after the existing bounded reopen budget. +For a host that opted in with `hostRetriesExhaustedLiveReplay`, +`liveSourceReplayExhausted` hands the retry timing to it, and it can call +`retryLiveSourceRecovery()` without replacing the cache or consumer item. Stop or +replacement revokes the pending retry, duplicate requests coalesce, and resumed +production restores the provider's blocking-reload capability. Application +backoff and error presentation remain host-owned. + +Corrupt packets with usable timestamps can still match identical previously +accepted bytes: an MPEG-TS continuity flag alone does not invalidate that proof. +Corrupt packets are held in source order during a candidate; a completed paired +verification discards damaged boundary packets even when their usable timestamps +are already past one track's retained frontier. Ambiguous candidates preserve their +packets. This does not discard arbitrary damaged packets during normal playback +or reset a decoder on a transport warning. Per-track/action diagnostics are rate-limited and include source timestamps or +`missing`, never URLs. `forwarded` means the packet reached the normal pump path, +not that a corrupt picture was displayed. Native `LagDiag` clock progress follows +the AVPlayer clock; `videoFrames=unavailable` explicitly records that it is not a +rendered-frame counter, and unavailable drop counts use `-` instead of zero. + +### Software live replay admission and recovery + +`LiveReplayPacketReader` uses the same `LivePacketReplayGuard` before recording, +clock-discontinuity folding and ring append. Both the DVR reader and the live +combined loop use it. Quarantine is bounded to 96 MiB and 10,000 packets; EOF, +read failure, cancellation and explicit positioning release owned packets. A +verified partial replay is never forwarded as fresh media. An interrupted source +is surfaced as `liveSourceUnavailable`, leaving retry timing to the consuming +application rather than treating transport loss as codec incompatibility. + +After paired verification, exact matching packets released late by the demuxer +remain suppressed until each track has advanced beyond the backward-discontinuity +threshold. This settling tail never discards different compressed bytes solely +because their timestamps repeat. During a DVR cursor recovery, acquisition waits +before appending another packet so it cannot evict the target while decoders and +clocks are being repositioned. Memory/disk retention caps remain in force. + +### Live playlist renewal after a longer GOP + +The first live media playlist seals its target duration. If a later finalized +segment's serialized `EXTINF`, rounded to an integer, exceeds that value, the +provider creates a new `live-N/` playlist namespace with a larger seal. The old +video and subtitle URLs keep their original target and retain the end index before +an oversized segment, even after that segment leaves the live window. Relative segment/init/subtitle URLs resolve within either +namespace to the same retained cache; source acquisition is not reopened. + +The native consumer swaps to the renewed URL using the existing in-place reload +and playlist placement machinery. The viewing position and play/pause intent +are carried across the swap, including a DVR position behind live. A renewal +never repeats an already completed startup cushion wait. The change does not +cut a GOP at a dependent frame or falsify a segment's duration. A consumer item +replacement can still cause a short interruption; missing source frames cannot +be reconstructed by this policy. diff --git a/docs/cli.md b/docs/cli.md index 0d8b96a5a..aeb302a8b 100644 --- a/docs/cli.md +++ b/docs/cli.md @@ -73,7 +73,7 @@ open 'http://127.0.0.1://master.m3u8' # macOS QuickTime `--start-position S` starts the session at S seconds, the resume anchor a host passes to `load(url:startPosition:)`. Also available on `play`. -`--atmos-bed ` is `LoadOptions.objectAudioRendering = .apac(layout)` (`5.1.2`, `5.1.4`, `7.1.2`, `7.1.4` or `9.1.6`): a TrueHD Atmos track is rendered into that bed and served as APAC, so the master reads `CODECS="…,apac.31.02"` (5.1.2, 8 channels), `apac.31.03` (10 or 12 channels) or `apac.31.04` (9.1.6, 16 channels) and the log carries `TrueHD Atmos: objects rendered into …`. `--audio-index ` serves source stream `n`, as a host's audio picker would; without it the engine prefers an E-AC-3 JOC track when the file has one. Dolby's Unfold demo: `serve --atmos-bed 7.1.4 --audio-index 1 dolby-unfold-lossless.m2ts`. +`--atmos-bed ` is `LoadOptions.objectAudioRendering = .apac(layout)` (`5.1.2`, `5.1.4`, `7.1.2`, `7.1.4` or `9.1.6`, #731, #744): a TrueHD Atmos or DTS:X track is rendered into that bed and served as APAC, so a master reads `CODECS="…,apac.31.02"` (5.1.2, 8 channels), `apac.31.03` (10 or 12 channels) or `apac.31.04` (9.1.6, 16 channels), and the log carries `TrueHD Atmos: objects rendered into …` (or `DTS:X: bed, heights and objects rendered into …`) and the `[SpatialAudioBridge] bed levels` lines. A DTS-HD MA track that LibDTSX does not confirm as DTS:X logs `DTS-HD MA track is not DTS:X LibDTSX renders (…); keeping the channel bridge` instead. `--audio-index ` serves source stream `n`, as a host's audio picker would. Dolby's Unfold demo, whose TrueHD Atmos track is stream 1: `serve --no-dv --atmos-bed 7.1.4 --audio-index 1 unfold.m2ts`. `--audio-delay ` parks the server with the AE#464 audio offset already in its muxer, which is how the DELIVERED offset is measured rather than argued about: fetch the media playlist and walk its segments, then read the first audio and video packet timestamps out of `init.mp4` + a segment with `ffprobe -show_entries packet=stream_index,pts_time`. On a 30 fps H.264 + AAC fixture the source's own alignment is +21.8 ms, `--audio-delay 200` reads +221.8 ms and `--audio-delay -150` reads -128.2 ms, i.e. exactly the offset asked for, with the video timestamp unchanged in every arm. @@ -273,11 +273,28 @@ asking again every drain cycle. The observable is the range count, in the origin point is that there is no second ask to refuse. Two shapes are worth running deliberately, because they are the two the flag has to survive: a long uninterrupted read, and a PAUSE, which must end the connection after five seconds and cost exactly one re-request at the frontier when playback resumes. +On a finite HEVC-in-MPEG-TS HLS VOD (the AE#268 ingest) the same flag puts the playlist and every +segment on one persistent HTTP/1.1 connection (AE#732); the observable there is the +`[HLSVODIngest] AE#732 connection ... open` and `... closed after N requests reason=...` lines, one +pair per connection, and a run without seeks should show exactly one. + +`--progressive-segments` sets `LoadOptions.progressiveSegmentDelivery`: each VOD segment is served +while it is written. Run it against a throttled origin and compare the `FIRSTFRAME` and first +`PHASE playing` times with and without the flag; the session log shows `serving while it is written` +for every segment that went out that way. On a local or fast source the segments are cut before +AVPlayer asks and the two runs look the same. `--max-concurrent-requests N` sets `LoadOptions.maxConcurrentSourceRequests` (#377): the most requests the reader may have open against the origin at once, across every path it fetches on. `1` also switches off the speculative parallel paths, which is the shape of a connection-metered CDN. Count the requests in the origin's own log, or read the `[AVIOReader]` connection lines, with and without the flag. `--assert-dv` sets `LoadOptions.panelPresentsDolbyVision` (AE#493), the host's assertion that its display presents Dolby Vision. macOS has no per-mode display capability API, so a Mac run plays a Dolby Vision source as its HDR10 base layer (`effective-format=hdr10`) until the host says otherwise; the flag moves that label and the tvOS criteria request. It does not change the packaging of a Profile 5 / 8.1 / 8.4 source (those carry their `dvcC` and `SUPPLEMENTAL-CODECS` on every display since 6.72.0 / 6.73.0), while Profile 7 and AV1 Dolby Vision are still gated on it. A wrong claim costs one in-place media-playlist fallback, not the item. +`--native-video-frame-diagnostics` enables the opt-in SDR native-loopback decoded-output +observer from `LoadOptions.nativeVideoFrameDiagnostics`. It logs progress, output gaps and +observation delays without suppressing the player layer or claiming physical display proof. + +`play --native-video-frame-recovery` separately enables bounded SDR native decoded-output repair; +it is off by default and does not follow from enabling diagnostics. See [diagnostics](api.md#diagnostics). + `--picture-probe` attaches an `AVPlayerItemVideoOutput` to the running item and decodes the source time out of the picture itself, which is the one axis question nothing else here can answer: every other observable (`#260` frame times, `prodShift` / `hostShift`) describes what the engine WROTE, not @@ -405,6 +422,17 @@ round 11 documents on both sides of that thread. `--start-position S` starts at a resume anchor, the same one `serve` takes. `--sw` forces the software path for a source that would route native, which is how a native-only fixture exercises the SW pipeline. +A run with `--start-position` and nothing else that repositions (no `--seek-every`, no host calls besides `play`, no audio switch) is also judged on where the resume LANDS: a clock that reads more than a second behind the anchor in the first three ticks exits 2 with `VERDICT: resume clock fell behind its anchor`. That is AE#724, and the plain clock-advances check could not see it, because the session it broke kept advancing, only from the wrong place. A resume on a long-GOP source repositions to the keyframe before its target, so its first decoded audio sample arrives up to a GOP early, and the software host used to move its clock back onto that sample. Ten-second GOPs reproduce it, two-second ones never do: + +```bash +ffmpeg -f lavfi -i testsrc2=size=320x180:rate=24 -f lavfi -i sine=frequency=440:sample_rate=48000 \ + -t 30 -c:v libx264 -preset ultrafast -g 240 -keyint_min 240 -sc_threshold 0 -c:a aac gop240.mp4 +aetherctl play --sw --start-position 17.3 --seconds 5 file://$PWD/gop240.mp4 +aetherctl play --sw --paused --host-calls play --start-position 17.3 --seconds 5 file://$PWD/gop240.mp4 +``` + +Before the fix both read `clock re-anchored to first sample: anchor=9.984s (load anchor 17.300s ...)` and `cur=10.8` at the first tick; after it `cur=18.2` and no re-anchor. `--paused` alone (no `play`) is not judged, but its ticks are the observable for the second half of the same report: a paused resume read `cur=0.00` until play, because the host published its still unarmed synchronizer over the anchor, and now reads `cur=17.30`. + `--malloc-census` turns on the large-allocation census (`AetherEngine.setLargeAllocationCensusEnabled`) for the run, for tracing a footprint that grows where the segment budget says it should not. Besides the 30 s sample it arms a jump trigger, which exists because the 30 s memprobe cannot catch a failure that completes inside one sample (every kill on #220 was that shape): a counter polled at `--census-hz N` runs the zone walk once it climbs `--census-threshold-mb N` above its running high-water. Both flags are inert without `--malloc-census`. `--audio-stats` installs the engine audio tap and watches the decoded PCM itself: an `AGAP` line for every source-PTS discontinuity > 2 ms between consecutive buffers, and per-second `alead` (last decoded audio PTS minus the synchronizer clock) plus `abufs` (buffers delivered) appended to the telemetry. `alead` is the audio renderer's safety margin: on the SW live path the look-ahead pump holds it near `AudioLookaheadPolicy.targetLeadSeconds`; a collapse toward zero means the source or the feeder cannot keep real time (this is how the #107 audio-chopping report was diagnosed). @@ -489,6 +517,8 @@ Brings up the loopback session headless, decodes the audio tap (#95) as fast as Verifies SW-path background audio (iOS keepalive) headless on macOS, where the `UIApplication` background lifecycle that normally drives it does not exist. Loads a software-routed source through the full engine, plays a foreground baseline, toggles the SW host into background-audio-only (`--fg N` foreground seconds, `--bg N` background seconds; defaults 3 / 6), then returns to foreground. Reports per-tick the audio clock, the SW video-frame count, and the process memory footprint, and a verdict. A healthy run shows the clock advancing through the background phase (audio alive), the video-frame count flat (video dropped), the footprint roughly flat (the loop paces on the audio renderer rather than buffering the rest of the file), and the video-frame count rising again on foreground return (resync at the next keyframe). The flag and counters are exposed through DEBUG-only engine hooks, so this command is unavailable in a Release build. Generate a quick software-path clip with `ffmpeg -f lavfi -i testsrc2 -f lavfi -i sine -c:v libvpx-vp9 -c:a aac -shortest clip.mkv`. +`--lose-session` (AE#739) reproduces what an iOS screen lock does to the SW host's VideoToolbox session: halfway through the foreground phase, and again right after entering background-audio-only, it invalidates the session in place, so the next decode returns `kVTInvalidSessionErr` (-12903) exactly as in a field log. It forces the software path and needs an HEVC source, since only HEVC reaches the hardware decoder there (`ffmpeg -f lavfi -i testsrc2=size=1920x1080:rate=24 -f lavfi -i sine -t 30 -c:v libx265 -x265-params keyint=48 -tag:v hvc1 -c:a aac clip.mp4`), and it prints the engine log so the loss, rebuild and reposition lines are visible. It fails unless video frames rise again after the foreground loss (the host rebuilds the session and repositions to the playhead) and after the foreground return (rebuilt unconditionally, resumes at the next keyframe). Before the fix both counts stayed at +0. + ## customio Wraps a local file in a custom `IOReader` and plays it through `load(source:)`. `--memory` reads via `DataIOReader`, `--forward-only` drops the seek capability, `--audio-only` routes through the audio-only pipeline, and `--reload` / `--switch-audio` / `--select-subs` / `--extract` exercise the optional capabilities (background reload, audio-track switch, embedded subtitles, scrub preview) end-to-end. `--audio-index N` names the audio stream at LOAD and prints what it asked for next to what it got. Pair it with `--forward-only` for the one question a live host has to answer: `selectAudioTrack` refuses such a source (rebuilding a drained FIFO), so naming the stream at load is the only way onto another track, and this is where that was measured rather than assumed (Sodalite#64). diff --git a/docs/formats.md b/docs/formats.md index beee587f8..8626477bf 100644 --- a/docs/formats.md +++ b/docs/formats.md @@ -172,13 +172,13 @@ costs a refusal and the original failure, not a second dead session. | HEVC Main10 (HDR10) | BT.2020 / PQ | | HEVC Main10 (HDR10+) | BT.2020 / PQ + per-frame ST 2094-40 SEI stream-copied | | HEVC Main10 (DV P5) | `dvh1` track type (DV-only, IPT-PQ base; forced even on SDR panels) | -| HEVC Main10 (DV P8.1 / P8.4 / P7) | `hvc1` primary + `dvvC` box, DV engaged via `SUPPLEMENTAL-CODECS` on DV panels, plain HDR10 / HLG base elsewhere | +| HEVC Main10 (DV P8.1 / P8.4 / P7) | `hvc1` primary + `dvvC` box (P7 converted to 8.1 first), DV engaged via `SUPPLEMENTAL-CODECS` on DV panels, RPU-driven tone map of the HDR10 / HLG base elsewhere | | HEVC Main10 (HLG) | BT.2020 / HLG | | AV1 HDR | BT.2020 / PQ | HDR-to-SDR mapping is handled by AVPlayer and the system compositor according to the connected display. AetherEngine doesn't tonemap on the host; it tells the system "this is BT.2020 PQ" (or DV, or HLG) via the HLS-fMP4 sample description and lets tvOS / iOS pick the right path. -An HDR master playlist is only served when the panel is ready for it. On tvOS the external panel must already be in HDR mode or Match Dynamic Range must be on (an SDR-parked panel rejects an HDR master with `-11848`). On iOS and macOS the built-in panel engages EDR on demand with no display mode switch, so `AVPlayer.eligibleForHDRPlayback` counts as readiness there; SDR-only devices read ineligible and stay media-direct. `DisplayCriteriaController` issues the HDMI content-frame-rate and dynamic-range hint via `AVDisplayManager` before the first segment is fetched, so the receiver-side handshake is in flight by the time `AVPlayer` is ready to render. (For why this ordering is mandatory on tvOS, see the README's "Host setup on tvOS" section.) The per-mode capability split still comes from `AVPlayer.availableHDRModes`; the 26 SDKs deprecate it in favor of the eligibility Bool but ship no per-mode replacement, and the DV5 `-11868` guard needs exactly that distinction, so the engine keeps the deprecated read until Apple obsoletes it. Since 6.82.0 that read may only ADD a mode, never subtract one: `supportsHDR10` and `supportsHLG` take `eligibleForHDRPlayback` as their floor, because the table under-reports HLG over HDMI. Measured on a Samsung whose EDID advertises Hybrid Log-Gamma and which plays HLG in the TV's own player, connected straight to an Apple TV, while the table reported `.hlg` absent; a second Apple TV on a different Samsung agreed, and an iPhone 17 Pro on its built-in panel reported it present, so the absence is about the HDMI path rather than the panel (AE#459). What that term reaches is one source: `effectiveVideoFormat` guards on Dolby Vision, so `supportsHLG` is consulted only for a DV Profile 8.4, which previously resolved to SDR on such a display while the manifest served `VIDEO-RANGE=HLG`. A plain HLG title was never clamped. Dolby Vision is left on the table alone, where it is measured correct in both directions (`false` on a Samsung without it, `true` on an iPhone 17 Pro the same day). That read does not exist on macOS at all (`API_UNAVAILABLE(macos)`), so the Mac table is derived from eligibility for HDR10 and HLG and leaves Dolby Vision unclaimed: eligibility proves EDR, not that AVFoundation will accept a DV variant on this display. A host that knows the hardware claims it with `LoadOptions.panelPresentsDolbyVision`, and a wrong claim costs one in-place media-playlist fallback rather than the item (AE#493) for the failures AVPlayer reports as an item failure. The claim no longer picks the packaging of a Profile 5, 8.1 or 8.4 source: 6.72.0 gave the non-DV branch its `dvcC` back and 6.73.0 its `SUPPLEMENTAL-CODECS`, so those three serve byte-identical manifests and segments with and without it, and what moves is the published `videoFormat`, the criteria request and the HDR readiness that rides along (Profile 7 and AV1 Dolby Vision are still gated on it). On tvOS that leaves a gap in the net: the `-15628` an HDR10-only panel showed on the DV packaging in May 2026 (AE#4) is a stall rather than an item failure, it now reaches that panel with or without the claim, and it did not reproduce on tvOS 26.6. DV composition on a panel without Dolby Vision is what `forceDolbyVisionOnNonDVDisplay` is for there (AE#455). An HDR master additionally requires a known source frame rate (#130): AVPlayer filters a `VIDEO-RANGE=PQ`/`HLG` variant that carries no `FRAME-RATE` attribute out of the master at parse time and fails the item with `-1002` without ever fetching the media playlist (SDR variants are accepted without it). The manifest frame rate uses the probe's `avg_frame_rate` with an `r_frame_rate` fallback; a source where both are unset (some live MPEG-TS ingests) routes media-direct instead of serving a master AVPlayer provably rejects. +An HDR master playlist is only served when the panel is ready for it. On tvOS the external panel must already be in HDR mode or Match Dynamic Range must be on (an SDR-parked panel rejects an HDR master with `-11848`). On iOS and macOS the built-in panel engages EDR on demand with no display mode switch, so `AVPlayer.eligibleForHDRPlayback` counts as readiness there; SDR-only devices read ineligible and stay media-direct. `DisplayCriteriaController` issues the HDMI content-frame-rate and dynamic-range hint via `AVDisplayManager` before the first segment is fetched, so the receiver-side handshake is in flight by the time `AVPlayer` is ready to render. (For why this ordering is mandatory on tvOS, see the README's "Host setup on tvOS" section.) The per-mode capability split still comes from `AVPlayer.availableHDRModes`; the 26 SDKs deprecate it in favor of the eligibility Bool but ship no per-mode replacement, and the DV5 `-11868` guard needs exactly that distinction, so the engine keeps the deprecated read until Apple obsoletes it. Since 6.82.0 that read may only ADD a mode, never subtract one: `supportsHDR10` and `supportsHLG` take `eligibleForHDRPlayback` as their floor, because the table under-reports HLG over HDMI. Measured on a Samsung whose EDID advertises Hybrid Log-Gamma and which plays HLG in the TV's own player, connected straight to an Apple TV, while the table reported `.hlg` absent; a second Apple TV on a different Samsung agreed, and an iPhone 17 Pro on its built-in panel reported it present, so the absence is about the HDMI path rather than the panel (AE#459). What that term reaches is one source: `effectiveVideoFormat` guards on Dolby Vision, so `supportsHLG` is consulted only for a DV Profile 8.4, which previously resolved to SDR on such a display while the manifest served `VIDEO-RANGE=HLG`. A plain HLG title was never clamped. Dolby Vision is left on the table alone, where it is measured correct in both directions (`false` on a Samsung without it, `true` on an iPhone 17 Pro the same day). That read does not exist on macOS at all (`API_UNAVAILABLE(macos)`), so the Mac table is derived from eligibility for HDR10 and HLG and leaves Dolby Vision unclaimed: eligibility proves EDR, not that AVFoundation will accept a DV variant on this display. A host that knows the hardware claims it with `LoadOptions.panelPresentsDolbyVision`, and a wrong claim costs one in-place media-playlist fallback rather than the item (AE#493) for the failures AVPlayer reports as an item failure. The claim no longer picks the packaging of a Profile 5, 8.1 or 8.4 source: 6.72.0 gave the non-DV branch its `dvcC` back and 6.73.0 its `SUPPLEMENTAL-CODECS`, so those three serve byte-identical manifests and segments with and without it, and what moves is the published `videoFormat`, the criteria request and the HDR readiness that rides along (AV1 Dolby Vision is still gated on it; Profile 7 joined the three once it was converted on every display). On tvOS that leaves a gap in the net: the `-15628` an HDR10-only panel showed on the DV packaging in May 2026 (AE#4) is a stall rather than an item failure, it now reaches that panel with or without the claim, and it did not reproduce on tvOS 26.6. DV composition on a panel without Dolby Vision is what `forceDolbyVisionOnNonDVDisplay` is for there (AE#455). An HDR master additionally requires a known source frame rate (#130): AVPlayer filters a `VIDEO-RANGE=PQ`/`HLG` variant that carries no `FRAME-RATE` attribute out of the master at parse time and fails the item with `-1002` without ever fetching the media playlist (SDR variants are accepted without it). The manifest frame rate uses the probe's `avg_frame_rate` with an `r_frame_rate` fallback; a source where both are unset (some live MPEG-TS ingests) routes media-direct instead of serving a master AVPlayer provably rejects. Non-DV HEVC derives its primary `CODECS` string from the source `hvcC` profile_tier_level (profile space, profile, tier, level, constraint bytes), so an 8-bit Main source is not mis-declared as Main10. The compatibility-flags element is the stored `general_profile_compatibility_flags` in REVERSE bit order per RFC 6381 / ISO 14496-15 Annex E: a real Main10 record stores `0x20000000` and prints `hvc1.2.4...`, matching MP4Box and Dolby's own reference manifests. The declaration is checked against the init segment on device, so it has to be exact. @@ -190,15 +190,15 @@ For DV streams the demuxer surfaces the source's `AVDOVIDecoderConfigurationReco - **Profile 5** (DV-only, IPT-PQ, no base layer) emits a bare `dvh1.05.` codec tag in the primary `CODECS` attribute with the `dvcC` box preserved. `dvh1` is forced even on non-DV panels (AVPlayer's system DV decoder tonemaps IPT-PQ internally; without `dvh1` the IPT chroma reads as YCbCr and shows a green / purple cast), so P5-on-non-DV is routed through a media playlist to dodge the `-11868` variant rejection. - **Profiles 8.1 / 8.4** (HDR10- / HLG-compatible base) emit `hvc1.2.4.L` as the primary `CODECS` tag. The muxer writes the `dvvC` box and the variant carries `dvh1.08./db1p` (8.1) or `/db4h` (8.4) in `SUPPLEMENTAL-CODECS`, which is what makes AVKit engage DV on a display that can present it. Both are emitted on every display, not only a DV-capable one: the pairing is what the authoring spec asks for, it is what lets a client that does not know `dvh1` read the base layer instead of failing, and the loopback master reaches AirPlay receivers that are exactly that client. It used to be stripped, against an `-11868` measured on tvOS 26.0 that no longer reproduces on 26.6, and keeping it is what makes AVPlayer put the RPU on the pixels wherever it has to convert the base layer, which on tvOS is every HDR source while the panel is not in HDR mode. On a panel that is already in HDR the base layer plays as plain HDR10 / HLG either way (AE#493). -- **Profile 8.1 on a non-DV display, with `LoadOptions.forceDolbyVisionOnNonDVDisplay`** (experimental, default off, AE#455) is served the way Profile 5 is served instead: `dvh1` sample entry, the container `dvcC` rewritten to profile 5 / compatibility 0, `CODECS="dvh1.05."`, no supplemental. AVPlayer then runs its own Dolby Vision composition and applies the per-frame RPU to the pixels before they leave the device, where the default route gives the panel one static HDR10 grade. The bitstream never changes; only the container's claim about it does, and what makes that hold together is that a Profile 8.1 RPU already carries the mapping out of its own HDR10 base layer, so the composer does not need the container to describe that layer. What makes it experimental is that this is not what the profile field means: a decoder that read the base layer's colorimetry from the profile rather than from the RPU would decode IPT out of YCbCr, the green / violet cast of #4 and #176. Profile 8.1 only. Profile 8.4's base layer is HLG, and a profile-5 `dvcC` over an HLG `colr` is a container that contradicts itself. -- **Any profile with a presentable base layer, with `LoadOptions.dolbyVisionHandling = .baseLayerOnly`** is served as that base layer alone, on every display: plain `hvc1` / `av01` sample entry, the `dvcC` stripped, no supplemental, no Profile 7 conversion, and HDR10 / HLG display criteria rather than `dvh1`. The RPU NAL units stay in the samples and are ignored, which is the route a Profile 7 already takes on a display without Dolby Vision. It is a host option and not a routing decision because the case it exists for cannot be told from the container: a remux whose container record claims Profile 5 over a bitstream whose VUI declares BT.2020 YCbCr PQ, whose RPU carries the NLQ and residual fields only Profile 7 has, whose mapping is the identity and whose base layer is plain HDR10 with its own static metadata. Served as `dvh1.05` the decoder reads YCbCr as IPT and the picture is green / violet; served as its base layer it is the HDR10 every player that ignores the record shows. The engine logs the contradiction on the default route (`DV Profile 5 record over a BT.2020 YCbCr VUI`) so a host knows to offer the option. What is admitted: HEVC Profile 7 / 8.1 / 8.4 and AV1 Profile 10.1 / 10.4, whose record names the base, and a Profile 5 / AV1 10.0 record whose VUI names one (`matrix_coeffs` BT.2020 with a PQ or HLG transfer; a genuine Profile 5 leaves both unspecified, IPT having no VUI code point). A Profile 5 whose VUI is unspecified has no base layer to present and keeps its route. +- **Profile 8.1 on a non-DV display, with `LoadOptions.forceDolbyVisionOnNonDVDisplay`** (experimental, default off, AE#455) is served the way Profile 5 is served instead: `dvh1` sample entry, the container `dvcC` rewritten to profile 5 / compatibility 0, `CODECS="dvh1.05."`, no supplemental. AVPlayer then runs its own Dolby Vision composition and applies the per-frame RPU to the pixels before they leave the device, where the default route gives the panel one static HDR10 grade. The bitstream never changes; only the container's claim about it does, and what makes that hold together is that a Profile 8.1 RPU already carries the mapping out of its own HDR10 base layer, so the composer does not need the container to describe that layer. What makes it experimental is that this is not what the profile field means: a decoder that read the base layer's colorimetry from the profile rather than from the RPU would decode IPT out of YCbCr, the green / violet cast of #4 and #176. Profile 8.1, and Profile 7 once converted to it. Profile 8.4's base layer is HLG, and a profile-5 `dvcC` over an HLG `colr` is a container that contradicts itself. +- **Any profile with a presentable base layer, with `LoadOptions.dolbyVisionHandling = .baseLayerOnly`** is served as that base layer alone, on every display: plain `hvc1` / `av01` sample entry, the `dvcC` stripped, no supplemental, no Profile 7 conversion, and HDR10 / HLG display criteria rather than `dvh1`. The RPU NAL units stay in the samples and are ignored. It is a host option and not a routing decision because the case it exists for cannot be told from the container: a remux whose container record claims Profile 5 over a bitstream whose VUI declares BT.2020 YCbCr PQ, whose RPU carries the NLQ and residual fields only Profile 7 has, whose mapping is the identity and whose base layer is plain HDR10 with its own static metadata. Served as `dvh1.05` the decoder reads YCbCr as IPT and the picture is green / violet; served as its base layer it is the HDR10 every player that ignores the record shows. The engine logs the contradiction on the default route (`DV Profile 5 record over a BT.2020 YCbCr VUI`) so a host knows to offer the option. What is admitted: HEVC Profile 7 / 8.1 / 8.4 and AV1 Profile 10.1 / 10.4, whose record names the base, and a Profile 5 / AV1 10.0 record whose VUI names one (`matrix_coeffs` BT.2020 with a PQ or HLG transfer; a genuine Profile 5 leaves both unspecified, IPT having no VUI code point). A Profile 5 whose VUI is unspecified has no base layer to present and keeps its route. - **A Profile 5 record its own RPU contradicts** is served as what the RPU says, on every display and with no option to set (#532). A remux whose container record claims Profile 5 over a bitstream whose VUI declares BT.2020 YCbCr with a PQ or HLG transfer states its own contradiction: IPT-PQ-c2 has no VUI code point, so a genuine Profile 5 leaves `matrix_coeffs` and `transfer_characteristics` unspecified. For that pairing, and only for it, the engine reads the first `unspec62` RPU and takes libdovi's `guessed_profile` over the record, which is proof rather than a heuristic because a Profile 5 RPU cannot carry a residual or an NLQ. An RPU that reads 7 takes the Profile 7 route above, an RPU that reads 8 takes the Profile 8.1 route and its compatibility rewrite, so the served container carries the record the source should have had. An RPU that agrees with the record, an RPU that cannot be read, and every source outside that pairing read no packets at all and keep their route, which is what makes the audit free for a genuine Profile 5. The read is a second open on the source, because the session's probe demuxer is handed to the software path as it stands. `LoadOptions.dolbyVisionHandling = .baseLayerOnly` takes precedence over the correction, and the Profile 5 software-path refusal (#176) stands down for a corrected record, whose base layer is plain HEVC. AV1 Profile 10.0 is not covered: its RPU rides in an ITU-T T.35 metadata OBU rather than an `unspec62` NAL, so the base-layer option remains the answer for that class. - **A Profile 5 the container never recorded** is given the record it should have carried (`AE#recordless`). Some Matroska releases are Profile 5 with the `BlockAdditionMapping` dropped and a VUI that says nothing, so the source loaded as plain SDR and the IPT picture was decoded as YCbCr. For HEVC 10-bit 4:2:0 with no Dolby Vision record and `color_trc`, `color_space` and `color_primaries` all unspecified, and for that pairing only, the demuxer reads the first RPU from a second open at the end of its probe; if libdovi's `guessed_profile` says 5 it appends an `AV_PKT_DATA_DOVI_CONF` (profile 5, level 6, rpu 1, el 0, bl 1, compatibility 0) to the stream's `coded_side_data`. Because it lives on the demuxed stream, the load, the HLS producer's own open, display criteria, the segment muxer's `dvcC` and every reload see a genuine Profile 5 record: `dvh1` sample entry, `CODECS="dvh1.05.06"`, `VIDEO-RANGE=PQ`, and the #176 software-path refusal. It is served the way a recorded Profile 5 is, the `colr nclx` repair above included: the gate is an unspecified VUI, which is the shape that repair exists for, and the same bytes cannot have two deliveries depending on what the container wrote down. A failed read, or an RPU that reads anything else, leaves the source as it was. `.url` sources only (a custom reader has no second open, and live is skipped); `LoadOptions.dolbyVisionHandling = .baseLayerOnly` is unaffected because a record with compatibility 0 has no base layer to present. AV1+DV emits a bare `dav1.10.` primary for Profile 10.0 (DV-only, no base layer to fall back to), and an `av01...` primary plus a supplemental entry for the two cross-compatible profiles: `dav1.10./db1p` with `VIDEO-RANGE=PQ` for Profile 10.1 (HDR10-compat base) and `dav1.10./db4h` with `VIDEO-RANGE=HLG` for Profile 10.4 (HLG-compat base), on hardware-AV1 hosts. Same split as HEVC: the `dav1` sample entry belongs to the profile without a base layer the way `dvh1` belongs to Profile 5, and a cross-compatible profile carries its base layer's own sample entry so a client that cannot read Dolby Vision still plays it. -**Profile 7** (dual-layer, the common UHD-Blu-ray remux profile) has no decoder on any Apple platform, so the engine converts it to single-layer **Profile 8.1** live during muxing: the RPU of each video packet is rewritten with [libdovi](https://github.com/superuser404notfound/LibDovi) (`dovi_convert_rpu_with_mode`, mode 2, the same transform as `dovi_tool -m 2`), the enhancement-layer NALs are dropped, and the container `dvvC` is set to Profile 8.1. On a DV-capable display this means real Dolby Vision (`dvh1.08/db1p` supplemental) instead of the plain HDR10 base; on a non-DV display Profile 7 still falls back to its HDR10 base, unchanged. The conversion is loss-free relative to what Apple could show before (the enhancement layer was never decodable on Apple hardware). MEL and FEL sources are both handled; a Full Enhancement Layer (FEL) source is logged, since its enhancement layer, which a native Profile 7 player would fold in, is discarded here while a Minimal (MEL) source loses nothing. Any per-packet conversion failure drops that RPU so the frame degrades to the clean HDR10 base, rather than shipping a Profile 7 RPU inside a container already declared 8.1. A session that converts publishes `dolbyVisionConversion = .profile7ToProfile81`, so a host label can name the profile actually served next to `sourceDVProfile`. +**Profile 7** (dual-layer, the common UHD-Blu-ray remux profile) has no decoder on any Apple platform, so the engine converts it to single-layer **Profile 8.1** live during muxing: the RPU of each video packet is rewritten with [libdovi](https://github.com/superuser404notfound/LibDovi) (`dovi_convert_rpu_with_mode`, mode 2, the same transform as `dovi_tool -m 2`), the enhancement-layer NALs are dropped, and the container `dvvC` is set to Profile 8.1. The conversion runs on every display and the result is served exactly as a Profile 8.1 is: on a DV-capable display this means real Dolby Vision (`dvh1.08/db1p` supplemental) instead of the plain HDR10 base, and on a display without Dolby Vision the kept `dvvC` lets AVPlayer tone-map from the RPU rather than from the base layer's static metadata, the way mpv plays Profile 7 without an EL decoder. It used to skip the conversion and strip the record there, which cost every Mac (no per-mode table) and every HDR10 / SDR panel the RPU and shipped the enhancement layer into segments nothing decodes. The conversion is loss-free relative to what Apple could show before (the enhancement layer was never decodable on Apple hardware). MEL and FEL sources are both handled; a Full Enhancement Layer (FEL) source is logged, since its enhancement layer, which a native Profile 7 player would fold in, is discarded here while a Minimal (MEL) source loses nothing. Any per-packet conversion failure drops that RPU so the frame degrades to the clean HDR10 base, rather than shipping a Profile 7 RPU inside a container already declared 8.1. A session that converts publishes `dolbyVisionConversion = .profile7ToProfile81`, so a host label can name the profile actually served next to `sourceDVProfile`. **SDR-compatible-base profiles** (HEVC **Profile 8.2**, AV1 **Profile 10.2**) carry a Rec.709 base layer that no Apple platform has a DV decoder for. The engine strips the `dvcC` / DV config and plays the base as plain `hvc1` / `av01` (logging `not DV-routable, playing Rec.709 base`); there is no Dolby Vision on any display for these, on DV panels and SDR panels alike. @@ -301,21 +301,50 @@ tag in a fixed reference locale, which is the validity signal canonicalization c (`canonicalLanguageIdentifier` echoes `dub` and `xyz` back unchanged exactly as it echoes `cnr`). The locale is fixed rather than the device's, or a file would resolve on an English Apple TV and not on a German one. A label that resolves to nothing writes nothing, so an untagged source keeps the -master it had before. +master it had before. The one exception is a stream-copied E-AC-3 JOC track (AE#726, next section), +which gets a rendition without `LANGUAGE` because its `CHANNELS` has nowhere else to go. ### Dolby Atmos -EAC3+JOC packets are stream-copied through the muxer untouched, on every output route. AVPlayer reads the segment, recognises JOC from the `dec3` box (`numDepSub=1`, `depChanLoc=0x0100`), and lets the downstream renderer decide: over HDMI it tunnels out as Dolby MAT 2.0 and the AVR lights up the Atmos indicator; over AirPods it renders spatially; over plain Bluetooth A2DP / LE it downmixes the bed channels to stereo natively. The route never changes the engine's decision (a JOC track is signaled in the playlist as `ec-3`, the same CODECS string as a non-JOC EAC3 5.1 track, so AVPlayer accepts it everywhere and the bitstream is never re-encoded for a route reason). The engine emits an explicit `[HLSVideoEngine] EAC3+JOC Atmos: stream-copy engaged; ...` diagnostic on every Atmos session. +EAC3+JOC packets are stream-copied through the muxer untouched, on every output route. AVPlayer reads the segment and recognises JOC from the `dec3` box's ETSI TS 103 420 extension (`flag_ec3_extension_type_a = 1` followed by `complexity_index_type_a`, the object count), with the height channels a dependent substream adds named by that substream's `chan_loc` bits, and then lets the downstream renderer decide: over HDMI it tunnels out as Dolby MAT 2.0 and the AVR lights up the Atmos indicator; over AirPods it renders spatially; over plain Bluetooth A2DP / LE it downmixes the bed channels to stereo natively. The route never changes the engine's decision (a JOC track is signaled in the playlist as `ec-3`, the same CODECS string as a non-JOC EAC3 5.1 track, so AVPlayer accepts it everywhere and the bitstream is never re-encoded for a route reason). The engine emits an explicit `[HLSVideoEngine] EAC3+JOC Atmos: stream-copy engaged; ...` diagnostic on every Atmos session. + +**`CHANNELS` on the audio rendition.** `CODECS` cannot carry the distinction. A JOC track is signaled `ec-3`, the same string a non-JOC E-AC-3 5.1 track gets (#34: never `ec+3`, which tvOS 26.5 refuses), so that attribute says nothing about objects either way, and the `dec3` box sits a layer below the playlist. The master's `EXT-X-MEDIA:TYPE=AUDIO` tag therefore carries `CHANNELS`, which Apple's HLS Authoring Specification makes required on every audio rendition and which Dolby's DD+ Online Delivery Kit defines for object audio as the count of decodable objects, a slash, then `JOC`. The engine writes `CHANNELS="16/JOC"` for a stream-copied E-AC-3 JOC rendition and the plain served channel count otherwise (`CHANNELS="6"` for a 5.1 bed); a source whose audio never reached the variant advertises no rendition and so gets no attribute. An untagged JOC stream copy still gets a rendition (AE#726): `NAME="Dolby Atmos"`, no `LANGUAGE`, `CHANNELS="16/JOC"`, and that rendition forces the master on an SDR source the same way a language does. AVFoundation lists it as one audible option named "Unknown" (measured on macOS against Dolby's untagged JOC test signal), where the tag-less master before built no audible group at all. An untagged track that is not object audio still gets no rendition, so no other untagged source changes route. Two things decide the value rather than one. The JOC form is gated on the delivery being a stream copy as well as on the source probe, because a JOC source whose stream-copy probe was rejected and which fell back to the audio bridge has no objects left in its segments and must claim none; and the count is read from the codec parameters the muxer was configured with, not the source's, so a bridged track reports the encoder's layout. The literal `16` is the object count Dolby's delivery kit and Apple's own Atmos masters carry: strictly it is `complexity_index_type_a` from the `EC3SpecificBox`, which is not available at the playlist layer. Matroska CodecPrivate doesn't usually carry the pre-parsed `dec3` / `dac3` box content the mov muxer needs at `avformat_write_header` time, so the muxer is configured with `+delay_moov` (alongside `+empty_moov+default_base_moof+frag_custom`). The moov atom is deferred until the first fragment-cut flush, by which point packets have flowed through `mov_write_packet` and libavformat's `handle_eac3` / `handle_ac3` have populated the sample-entry boxes from the actual packet bitstream. The first cut emits the deferred ftyp+moov (routed by `FragmentSplitter` to init.mp4); subsequent cuts emit normal moof+mdat. Net effect: EAC3 / AC3 from matroska direct-play stream-copies cleanly with valid sample-entries, no manual bitstream parsing on the host side. -### TrueHD Atmos (object rendering) +**A dependent substream needs FFmpegBuild 3.7.0 or later.** A Blu-ray style DD+ track is an AC-3 core syncframe (`bsid 6`) followed by an E-AC-3 dependent syncframe that carries the height channels and the objects. Stock `handle_eac3()` gets two `dec3` fields wrong for that shape: `chan_loc` is taken from the dependent `chanmap` with a shift and mask that do not match ETSI TS 102 366 F.6.2.3 (fixed upstream as `f10fdd6310`, master only), and `complexity_index_type_a` is read from the independent substream alone, so the TS 103 420 extension is dropped. The box then describes a bare 5.1 bed and an Atmos receiver reports multichannel PCM (AE#728). FFmpegBuild's `patch_ffmpeg_eac3_dec3` fixes both in the muxer; measured on a 5.1.2 source with `chanmap = 0xA010`, the payload goes from `14 00 0C 0F 02 00` to `14 00 0C 0F 02 40 01 10` (`chan_loc` `0x040` is Lvh/Rvh, `01 10` states the extension and 16 objects). A track whose objects sit in the independent substream already got a correct box and is unchanged. + +### TrueHD Atmos with heights + +Apple TV cannot bitstream TrueHD, and no Apple platform hands a third-party app a compressed bitstream output, so the audio bridge decodes a TrueHD track and re-encodes its 7.1 channel presentation (`audioBridgeMode`). For TrueHD Atmos that loses every height and every object position before the audio leaves the engine. `LoadOptions.objectAudioRendering = .apac(layout)` keeps them (AetherEngine#731): the engine decodes the Atmos object presentation (the bed, up to 15 dynamic objects and their object audio metadata, through [LibTrueHD](https://github.com/superuser404notfound/LibTrueHD)), renders it into the `SpatialSpeakerLayout` bed the host names (5.1.2, 5.1.4, 7.1.2, 7.1.4 or 9.1.6, as `SpatialSpeaker` positions in CoreAudio's channel order), and encodes that bed as Apple Positional Audio. tvOS sends APAC to an Atmos receiver or soundbar as Dolby MAT, the same way it delivers its own spatial content, and iOS plays it as Spatial Audio. + +The renderer is allocentric, the model Atmos metadata is authored in: the room is a unit cube, and an object is balanced constant-power between the two speaker planes that bracket its height, the two rows that bracket its depth and the two speakers that bracket its width, so moving an object never changes its loudness. Ceiling speakers sit where ETSI TS 103 448 puts them, a quarter of the room in from each wall rather than in its corners, so an object on the ceiling a third of the way back plays mostly from the front tops, as Apple's own Atmos render places it. A 5.1 bed's surrounds sit halfway down the side walls, also as TS 103 448 places them, so on 5.1.2 and 5.1.4 an object at the back wall stays on them. Object size spreads it over a grid of points summed by power, snap sends it to the nearest speaker, zone masks keep it off the speakers they exclude, and an object without elevation stays off the ceiling. Bed channels the layout has route discretely, LFE goes to the LFE channel, and metadata updates ramp gains sample-accurately as the stream specifies. After a seek, decoding resumes at the next major sync, and the stream's first object metadata follows it up to 32 ms later; the decoder holds the audio in between and plays it at that metadata's positions, rather than leaving every object silent until it arrives (it waits at most 100 ms). + +**Track choice.** With the option on, the automatic audio pick prefers a TrueHD Atmos track over the other tracks of the same language: of the `preferredAudioLanguages` match, or of the session's default track when no preference decides it. It never crosses a language or a dub (a region or script both tags state and disagree on), never picks a commentary for it, applies only where the bed can be rendered (a VOD video session off the software path, on OS 26 or later), and an explicit `audioSourceStreamIndexOverride` still wins. Without that, a film carrying DTS-HD and TrueHD Atmos in one language usually opened on whichever the container listed first. + +It is opt-in because it is a trade: APAC is lossy, at several Mbit/s, in place of the lossless 7.1 the channel bridge delivers. It applies only to TrueHD that FFmpeg marks as Atmos, at 48 kHz, on OS 26 or later where the APAC encoder exists; anything else, and any failure to start, keeps `audioBridgeMode` with the audio intact. Silo built the first implementation in its fork and offered it as the reference this one is ported from. + +**Atmos on the receiver (tvOS).** tvOS sends APAC over HDMI as Dolby MAT, and some sinks show Dolby Atmos for it on their own, but not all: a Samsung HW-Q990C soundbar fed by an Apple TV 4K (tvOS 27.2) played APAC without ever showing Atmos, although `AVAudioSession` reported a MAT format throughout. While an APAC session plays, the engine therefore loops a silent E-AC-3 stream signalled as Dolby Atmos on a second, unmuted player (`AtmosOutputActivator`). On the same setup that brought the soundbar to Atmos before the first frame and kept it there across a seek. Nothing the app can read (`AVAudioSession`'s output format or channel count) tracked the indicator, so only the sink can confirm it. The stream is 2 s of digital silence written bit by bit from the E-AC-3 and object audio specifications (`Scripts/make-silent-atmos.swift`), plays only while the engine's player plays or waits to play an APAC item, and is released otherwise. iOS and macOS do not run it. + +A linked peak limiter sits between the renderer and the encoder: the APAC encoder carries samples over full scale through unchanged (a tone at amplitude 4.0 decodes back at 4.001), and a rendered bed can get there, since object gains reach +15 dB and up to sixteen elements sum into one speaker. One gain for every channel, so no object moves; instant attack, so nothing leaves above −0.18 dBFS without a lookahead delay that would shift the audio against the picture; a 250 ms release. A bed under the threshold passes bit for bit. -Off by default. With `LoadOptions.objectAudioRendering = .apac(layout)`, a TrueHD track FFmpeg marks as Atmos (`AV_PROFILE_TRUEHD_ATMOS`, 48 kHz) skips the channel bridges: `SpatialAudioBridge` decodes the object presentation (beds, objects and their positions), renders it into the host's speaker bed (5.1.2, 5.1.4, 7.1.2, 7.1.4 or 9.1.6) with a constant-power allocentric panner, and encodes that bed as Apple Positional Audio (APAC, 320 kbps per bed channel) through `AVAudioConverter`. tvOS decodes APAC and sends it to an Atmos receiver as Dolby MAT, heights included. The trade is a lossy encode in place of the lossless 7.1 presentation, which is why the host opts in. Requires OS 26 (the APAC encoder API); on anything older, or if the bridge cannot start, the session falls back to `audioBridgeMode` with its audio intact. +**Cost.** Decoding the object presentation and encoding APAC each take about one core: on Dolby's Unfold demo (27 s, M1, release build) the TrueHD decode took 1.36 s (0.92 s since LibTrueHD 2.2.0, 0.60 s through its C API since 2.3.0), the APAC encode 1.26 s and rendering plus limiting 0.06 s. Apple's encoder runs on one thread, so the bridge hands each rendered 2048-frame chunk to a serial encode queue and decodes the next one meanwhile (`APACEncodePipeline`), which took the whole sample from 2.73 s to 1.75 s, and with LibTrueHD 2.2.0's faster decode to 1.40 s, 19x real time against 10x in series. The encoder is now the slower half, so the decoder no longer sets the pace. That time is what a seek past the produced range waits for before its first segment, so it is the one place the trade shows. The queue inherits the producer's QoS, a pool of three chunk buffers holds the producer at most two chunks ahead of the encoder, and the producer waits for the queue (`settle()`) before a keyframe advances its segment cutter or a write cuts the open segment, so every packet is routed as the encode in series routed it and every segment carries the same audio, byte for byte. Those waits cost about 0.1 s of the sample's overlap. -libavformat cannot write APAC (its `apac` codec id is an unrelated legacy codec), so the muxer is given an ALAC stand-in and the init segment's sound sample entry is replaced with an `apac` entry carrying the encoder's magic cookie, which is the complete `dapa` box (`APACSampleEntry`). The master playlist advertises `apac.31.LL`: profile 31 (multichannel) and the channel-count level, `02` for 8 channels (5.1.2), `03` for 9 to 12 channels and `04` for 13 to 24; AVPlayer rejects a bare `apac`. Every APAC packet the encoder produces is independently decodable, so every segment starts on an Audio Sync Packet. The encoder runs with dynamic range control off: its DRC analysis otherwise holds 1.56 s (`.capture`) or more than 5 s (`.movie`) of audio before the first packet, which would leave the first segment after a seek without sound. The encoder's 2048 frames of priming stay in the stream: AVFoundation presents an APAC packet's audio 2048 frames before its timestamp, so the priming packets take the source position's timestamp and the first content frame plays on it. +**What the session log says.** `[SpatialAudioBridge] object configuration` names the presentation (`LFE + 15 objects` for Dolby's Unfold demo). A `bed levels` line gives each bed channel's RMS and peak with its CoreAudio name, how many objects were active and how many elevated, the LFE element's level and gain, and the limiter's work over the same window when it had any; it comes after the first 5 s of audio (and again after every seek), then every 30 s. The decoder waits for a major sync after a start or seek, so a decoder that returns nothing for 1200 packets in a row, a second of TrueHD, is reported as one that produces nothing, the same failure the channel bridge reports. -What the session log shows, for a report that the heights or the LFE are missing. `[SpatialAudioBridge] bed levels` gives every bed channel's RMS and peak level in what the encoder was fed, named with CoreAudio's channel labels, after the first 5 s of audio (and again after every seek), then every 30 s, plus a partial window at a seek, at the end of the stream and when playback stops. Each line carries the window's position on the timeline and the most objects the metadata had playing during it, with how many of those sat above ear level with elevation allowed. Level on a height channel means the encoder was given height sound, so heights heard from the floor speakers were lost after that point, in the system's rendering or the receiver. A silent height next to elevated objects is a lead rather than a verdict, because the counts come from the metadata and an elevated object can be silent or snap to a floor speaker. The line ends with the LFE element's input level and its metadata gain, which split a silent LFE channel into a silent source, a zero gain or no LFE element; `[SpatialAudioBridge] object configuration` names the decoder's elements once per configuration (`LFE + 15 objects` on Dolby's Unfold demo). An object decoder that returns nothing for 1200 packets in a row, a second of TrueHD, is reported as `.audioBridgeProducedNoOutput`; the threshold is that long because after a start or resume mid-stream the decoder waits for the next major sync, up to 102 access units on Unfold. `[HLSVideoEngine] master audio:` is the master's `CODECS` and its audio rendition's `CHANNELS` (`channels=none` when the rendition declares none, which is every master this engine writes today), or `not served` when the session routes media-direct and AVPlayer reads only the init segment. The `audioRoute` line, written at ready-to-play, once playback has settled, and on every route, rendering-mode, rendering-capability or spatial-capability change, is the system's side: `rendering` is `AVAudioSession.renderingMode` (`dolbyAtmos` against `surround` or `spatialAudio`), and each port, named by type rather than by the user's name for the device, lists the channel labels it reports with a `heights=` count. Read the two together, because a Dolby MAT carrier can report fewer channels than it carries. A TrueHD Atmos track loaded with `objectAudioRendering` off logs that too, since the channel bridge then carries the 7.1 presentation with the objects mixed into the floor channels. +### DTS\:X with heights + +DTS:X reaches the bridge the same way TrueHD Atmos does: Apple TV cannot bitstream DTS-HD, so `audioBridgeMode` decodes the lossless 7.1, and on a DTS:X track that 7.1 is a compatible downmix into which the encoder folded the four height channels and any objects. `objectAudioRendering = .apac(layout)` keeps them: a DTS-HD Master Audio track goes through [LibDTSX](https://github.com/superuser404notfound/LibDTSX) (the `dca` crate from harletty-bridge behind a C API, packaged like LibTrueHD) into the same renderer, limiter and APAC encoder. LibDTSX does the DTS-specific work, so the engine side is a speaker mapping (`DTSXObjectAudioDecoder`): it subtracts every fold the frame states (or that `dca`'s fold renderer recomputes for an object the encoder panned into the bed) from the bed, so the bed, the heights and the objects play side by side without anything playing twice, and it places DTS:X's angular object positions in LibTrueHD's room coordinates. The reference sphere is projected onto the room's boundary through the speakers' angles (centre 0°, front ±30°, wide ±60°, side ±90°, rear ±145°), the ceiling reached at the 45° of a height speaker and its centre straight overhead, so the dual-balance panner places a sound between two speakers in the same proportion an angular panner would. + +The standard presentation, which every DTS:X film in SpatialAudioBridge's library census used in every frame, is a 7.1 bed and four fixed heights (top front and top back pairs), all routed discretely: rendered into 7.1.4, *8 Mile*, *The Bourne Identity* and the DTS:X Object Emulator demo give each speaker exactly its channel, bit for bit what SpatialAudioBridge's DTS:X renderer gives. The alternate presentations add one to five objects; `dca` classifies them from a corpus and calls them experimental. *Independence Day* (FFmpeg: "DTS-HD MA + DTS:X IMAX") is one: two static objects at ±34.5° and 12° up, which pan mostly into the front pair, a little into the sides and the front heights. Against SpatialAudioBridge's renderer, which pans DTS:X by angle over a bed ring and a height ring, the 7.1.4 render of a minute of it points the sound the same way within 0.07° (median of 200 ms windows, energy-weighted; 90th percentile 0.39°), and of the D4 trailer's five moving objects within 0.23° (2.3°); the floor channels correlate at 1.0000, and the ceiling's share of the energy is 0.1 to 0.2 points lower. These figures were taken against the panner before #742 moved its top speakers from the room's corners a quarter in, so the object renders now differ from them slightly; the standard presentation routes discretely and is unaffected. + +**Which tracks.** FFmpeg names only two of DTS:X's markers, so it labels some DTS:X plain "DTS-HD MA" (Trinnov's "Experience" trailer, with five moving objects, is one), and a track it does label DTS:X can carry a presentation LibDTSX refuses. Every 48 kHz DTS-HD MA track is therefore offered to LibDTSX, which decides on the track's first three frames. The engine shows them to it through the demuxer's peek (`peekPackets`), which holds what it reads for the producer, so deciding costs no extra read and no seek: on a resume the demuxer is put where the first producer starts before the peek, not after it, and the frames there decide. The peek holds at most 512 packets or 24 MiB, every stream's included, and gives up without a verdict past either. A refused track, or one without a verdict, keeps `audioBridgeMode` with its lossless 7.1 as before, and a stream that turns out not to be 48 kHz is refused on its first block. Lossy DTS (core, ES, 96/24, High Resolution) is never offered. The automatic audio pick prefers a track FFmpeg labels DTS:X the way it prefers TrueHD Atmos; a plain-labelled DTS:X track is rendered when it is the track that plays, but cannot be ranked before playback. + +**Seeks.** A DTS-HD Master Audio frame is lossless only against the core decoder's filter and predictor history, which a stream entered mid-way does not have: the first frame after a seek decodes distorted (over 120 seeks into five DTS:X streams, its error a median 2.7 dB below the signal) and the next can still err by -16 dBFS. LibDTSX decodes the first two frames after a start or seek without output and counts them on its input timeline, so the bridge's first encoded frame sits 21 ms after the segment's start, where those frames end, and nothing fills the gap; the first block then differs from a continuous decode by at most -33 dBFS, and the output is bit-identical again within about ten frames. + +**On the receiver.** Over Jellyfin on an Apple TV 4K (tvOS 27.2), *8 Mile*, *The Bourne Identity* and *Independence Day* played as APAC with the soundbar showing Atmos, from the middle of the film and across seeks (back to playing in 0.7 to 2.2 s), with the same `AtmosOutputActivator` TrueHD Atmos uses; *Arrival*, plain DTS-HD MA, was refused on its first frame and showed PCM. + +**What the session log says.** `[HLSVideoEngine] DTS-HD MA track is DTS:X 7.1.4 (LibDTSX, 3 ms)` names the presentation the verdict found (`7.1.4+2` for *Independence Day*), and a refusal names its reason (`lossless DTS-HD Master Audio without a DTS:X extension`). The `object configuration` and `bed levels` lines are the same as for TrueHD Atmos. The 1200-packet silence report is too: at 512 samples a DTS frame that is 12.8 s of DTS, against a second of TrueHD. ## Subtitles @@ -487,13 +516,15 @@ HDR sources come out looking right: PQ / HLG BT.2020 frames are tone-mapped to S Decrypted disc images play through the normal decode path via a synthetic seekable byte source. `DiscReader` detects and routes both local `.iso` URLs and `MediaSource.custom` ISO readers. -- **DVD-Video ISO:** `ISO9660Reader` reads the ISO9660 bridge filesystem, `DVDIFOParser` reads the VMGI (VIDEO_TS.IFO) TT_SRPT to enumerate the disc's titles and each title set's VTS IFO (VTS_NN_0.IFO) program chain for the title duration and chapters, `DVDTitleSelector` groups each title set's content VOBs (whole-VTS, largest first), and `ConcatIOReader` presents the selected title's concatenated VOBs as one seekable source demuxed as MPEG-PS. On an unreadable VMGI it falls back to the VOB-size grouping; an unreadable VTS IFO leaves the title's duration and chapters empty but still plays. -- **Blu-ray ISO:** a read-only `UDFReader` (UDF 2.50, including the metadata partition and fragmented-file allocation descriptors) resolves BDMV, `MPLSParser` + `BDTitleSelector` enumerate every `.mpls` playlist as a selectable title (longest first so id 0 is the main feature; trivially short menu / FBI-warning playlists filtered), and the selected title's `.m2ts` clips are concatenated and demuxed as MPEG-TS (H.264 / HEVC / VC-1, AC3 / EAC3 / DTS / TrueHD / LPCM, PGS subtitles). +- **DVD-Video ISO:** `ISO9660Reader` reads the ISO9660 bridge filesystem (an image without a bridge volume, UDF only, has `VIDEO_TS` listed by `UDFReader` instead, once no `BDMV` is found there), `DVDIFOParser` reads the VMGI (VIDEO_TS.IFO) TT_SRPT to enumerate the disc's titles and each title set's VTS IFO (VTS_NN_0.IFO) program chain for the title duration and chapters, `DVDTitleSelector` groups each title set's content VOBs (whole-VTS, largest first), and `ConcatIOReader` presents the selected title's concatenated VOBs as one seekable source demuxed as MPEG-PS. On an unreadable VMGI it falls back to the VOB-size grouping; an unreadable VTS IFO leaves the title's duration and chapters empty but still plays. The main program chain's cells are folded onto one title timeline with the Blu-ray clip fold, each cell's timestamp base read from its navigation packs, since many discs restart the timestamps at a cell; a seek goes to the VOBU's byte through the VTS time map (VTS_TMAPT). Only a chain whose cells follow each other from the first title sector, with no angle block, is folded. +- **Blu-ray ISO:** a read-only `UDFReader` (UDF 2.50, including the metadata partition and fragmented-file allocation descriptors) resolves BDMV, `MPLSParser` + `BDTitleSelector` enumerate every `.mpls` playlist as a selectable title (longest first so id 0 is the main feature; trivially short menu / FBI-warning playlists filtered), and the selected title's `.m2ts` clips are concatenated and demuxed as MPEG-TS (H.264 / HEVC / VC-1, AC3 / EAC3 / DTS / TrueHD / LPCM, PGS subtitles). A seek goes by the clips' EP maps (`BDMV/CLIPINF/*.clpi`): the folded title time names the clip, its `in_time` turns that into the clip's own clock, and the map gives the keyframe's byte, so the seek is one byte reposition and holds on titles whose clips run their clocks over the same range, where a timestamp search lands in the wrong clip. A title with a clip that has no readable EP map seeks by timestamp. Both: no decryption (CSS / AACS retail discs must be ripped decrypted first), no GPL nav libraries, no menus, BD-J, or multi-angle. A remote `.iso` / `.img` / `.udf` needs an origin that honours HTTP `Range`, because a disc image is a filesystem that only random access can walk. The range probe is judged at the response head: an origin that answers it with a 200 fails the load with an error naming the cause (the body is never downloaded), and a range answered wider than asked is cut where the range ends. +**Blu-ray folders.** A disc that was ripped as a `BDMV` folder rather than an image plays the same way through `MediaSource.custom` with a `DiscDirectoryReader`: the host lists the folder's files (path relative to the disc root, and size) and opens any one of them on request. `HTTPDiscDirectoryReader` is the ready-made one, with one URL per file, so an origin serves the disc as plain files over `Range` and never remuxes it. Recognition is the image path with files in place of UDF extents: the same bounded playlist scan and title selection, the selected title's `.m2ts` files concatenated in playlist order as one MPEG-TS, the same multi-clip timeline, chapters and STN track languages, and the same seek by the clips' EP maps when the folder carries `BDMV/CLIPINF`. A host that already knows the main playlist names it in `preferredPlaylist`, and only that playlist is read and published as the title. The concatenating reader opens a clip's file when the read reaches it and keeps at most three open. A controlled probe (`limits` or `cancellation`) does not recognize a folder yet; an uncontrolled `probe(source:)` and `load(source:)` do. + **Title selection.** `engine.discTitles` (`@Published [TitleInfo]`) lists the disc's titles (id, name, duration, chapter count) and `engine.selectedDiscTitle` is the active one; `engine.selectTitle(id:)` switches title, rebuilding the pipeline from the new title's head. The selection survives audio-track switches and background-resume reloads, and a fresh `load` defaults to the main title (an out-of-range id clamps to it). Blu-ray enumerates all playlists; a DVD enumerates its title sets (the VMGI TT_SRPT title list, resolved whole-VTS, with the duration read from each VTS's main program chain; per-cell / episodic splitting is deferred). **Chapters.** `engine.discChapters` (`@Published [ChapterInfo]`) carries the selected title's chapters; `engine.selectChapter(id:)` seeks to one (a thin `seek` wrapper, no pipeline rebuild). For Blu-ray they come from the playlist's PlayListMark entries (entry marks only; link points dropped), each mark's timestamp on its clip's STC offset by the clip's in_time and the cumulative duration of preceding play items. For DVD they come from the main program chain's program map plus the cumulative cell playback times. Chapter starts are title-relative (0-based); `selectChapter` adds the title's content-start base (the native playlist shift, or the software path's container start PTS) so the seek lands on the source-PTS playback axis. diff --git a/docs/validation/live-video-progress.md b/docs/validation/live-video-progress.md new file mode 100644 index 000000000..359810bcf --- /dev/null +++ b/docs/validation/live-video-progress.md @@ -0,0 +1,123 @@ +# Live replay and video progress validation + +## Physical-device evidence, 12 October 2026 + +The reporter exercised an integrated downstream build (1.1.15 build 13, +engine `a79335531075cc99d42d18bb4d65e96a64c30cea`, upstream 7.35.1) on four real +Apple devices. All 26 diagnostic archive parts were verified by count and SHA-256: +8,465 records, of which 219 belonged to an older iPad build and were excluded. +Private media, provider addresses, credentials and support identifiers are omitted. +Exact hardware models were not captured; the Mac ran the iPad-compatible app. + +| Device / OS | Actual media and scenario | Observation before this correction | +| --- | --- | --- | +| Mac / macOS 27.0.1 (26A434) | Live MPEG-TS, H.264 High 1280x720 / 25 fps / SDR; AAC-LC stereo 44.1 kHz; 10 s video segments | 11 verified replay removals; five decoded-output gaps of 0.423–9.549 s | +| iPhone / iOS 26.6.1 (23G83) | Four live MPEG-TS loads, H.264 High 720p/1080p / 25 fps / SDR with AAC-LC; manual seeking and four PiP entry/exit pairs | Nine replay removals; three 1.000–1.175 s output gaps; two separately identified system audio interruptions | +| iPad / iPadOS 26.6.1 (23G83) | MKV VOD, H.264 Main 1920x800 / 23.976 fps / SDR; AAC-LC 5.1 48 kHz; resume at 2852.5 s and PiP | 2.56 s load-to-playing, one 0.89 s buffering interval, inline readiness restored after PiP; decoded-output sampling was not enabled by this host for VOD | +| Apple TV / tvOS 27.0 (24J361) | Live MPEG-TS, H.264 High 1920x1080 / 25 fps / SDR; AAC-LC stereo 48 kHz; 2 s initial segments | Seven replay removals; four 0.528–0.691 s output gaps, all self-resolving | + +Live load-to-playing was 0.90–1.47 s, with seekability observed within 1.73–1.93 s. +No unsolicited backward movement appeared in sampled clocks. The one clear backward +movement followed an explicit ten-second seek command. No source/consumer reopen or +compatibility fallback was observed. All five PiP exits restored inline layer readiness. +These are observations of the integrated fork, not isolated device tests of each PR. + +The strongest Mac correlation was a held source boundary at 36700.140 s, with source +origin 36589.660 s: its item position was exactly 110.480 s, the last decoded picture +before the 9.549 s gap. The next picture was at 120.000 s. Other Mac gaps also ended +at ten-second boundaries. The item clock progressed, buffered media remained, and +`AVPlayerLayer.isReadyForDisplay` stayed true. That flag describes first-picture +readiness, not continuing picture progress. Decoded-output gaps do not by themselves +prove an identical physical-screen freeze, and the archives do not contain raw media. + +## Reproduced admission defect + +The existing flagged-PES regression preserved every picture, so merely setting +`AV_PKT_FLAG_CORRUPT` on otherwise intact bytes did not reproduce this remaining case. +Cutting the actual transport bytes inside an outgoing access unit did: + +1. The demuxer reported a corrupt packet and the admission guard held the boundary. +2. A later partial outgoing access unit emerged **without** the corrupt flag. +3. After both tracks proved replay, the held batch contained that partial picture + and its intact returning copy at the same original DTS and PTS. +4. Exact-payload deduplication retained both different payloads. The muxer's monotonic + guard bumped the second DTS by one tick; 800 original video packets became 801. +5. Apple's VideoToolbox decoder rejected the malformed picture with `codecBadDataErr` + (`-8969`). A long reference chain explains why damage can persist to the next IDR. + +`LivePacketReplayGuard.verifiedPacketOrder` now reconciles video copies by both DTS +and PTS **only inside the pending batch after replay is verified on the participating +tracks**, choosing the returning copy and restoring decode order. It does not erase +source history, deduplicate arbitrary timestamps, collapse audio payloads or treat +an unrelated programme's clock reset as replay. Both native remux and software/DVR +admission use the same operation. Numeric `ReplayVideoBoundary` diagnostics report +flagged damage, replacements, missing replacements, unflagged copies superseded and +untimed fragments removed from the verified outgoing boundary. + +A second controlled 320x180 fixture exposed an **untimed** unflagged fragment after +the corrupt outgoing PES. It escaped the timed boundary queue, acquired a synthetic +DTS and advanced the admitted frontier; the intact returning reference picture was +then discarded as replay. Quarantining that fragment with its damaged boundary fixes +both routes. It is discarded only when replay is proven; ambiguous boundaries retain +all packets. Before correction, FFmpeg reported missing references and decode error +flags, and actual native AVPlayer output paused for 5.310 s (last frame 24.720 s, next +30.040 s). After correction, all 1,125 native-decoded pictures and timestamps matched +the clean 45 s source, and the 38 s AVPlayer run showed no decoded-output gap. +This was a local HTTP origin with synthetic H.264 High / 25 fps / 10 s closed GOP / +two B-frames, AAC-LC stereo 44.1 kHz / SDR. The CLI's headless layer was ineligible for +presentation recovery, so this result exercised the packet correction, not the watchdog. + +This is a deterministic defect with a failing-before/passing-after regression, +and it matches the boundary/reference-chain pattern in the field. Without the +original private packet stream it is not proof that every observed gap had this cause. + +## Bounded presentation protection + +`LoadOptions.nativeVideoFrameRecovery` is separate from the existing observational +`nativeVideoFrameDiagnostics` option. Hosts explicitly enable decoded-output repair. +Only previously productive, freshly sampled SDR output can supply a stall signal. +The existing bounded current-position nudge/reload ladder excludes short gaps, +PiP, background, external playback, pause, seeks, hidden layers and source starvation. +Unavailable sampling cannot trigger repairs or rearm exhausted attempts. Sustained +healthy decoded progress rearms the ladder; a briefly ready layer after an item swap +is insufficient. Source identity, retained DVR and viewing position remain intact. + +## Regression method and limits + +The shared generated fixture is 32 s of H.264 High, 32x32 / 25 fps / 8-bit SDR, +10 s closed GOPs and two B-frames, plus AAC-LC stereo 44.1 kHz. No private media or +external executable is needed for the test. Cases cover a flagged outgoing PES, +actual byte truncation inside a predicted picture, and truncation inside a keyframe, at two byte offsets. Unit cases also cover an untimed +fragment with and without verified replay. + +- Compare all 800 software-decoded pictures against the clean source. +- Remux clean and replay inputs through the real producer, then pass every compressed + output picture through Apple's VideoToolbox decoder. Compare all 800 BGRA pixel + hashes and presentation timestamps, rather than only packet counts. +- Keep demux/decoder work off the cooperative executor, check cancellation between + packets, and drain native asynchronous/delayed frames before comparing. +- Replay the observed short/long gap durations through the recovery policy. Verify + short gaps, stopped clocks, delayed or unavailable sampling, seeks and excluded + presentation cannot create repeated repair loops. + +An exploratory AVAssetReader check initially read only the first fragment of a +concatenated, unindexed HLS-fragment file, also for a clean FFmpeg-generated control. +That was a test-container limitation, not evidence that the engine lost 600 pictures. +The final native decoder comparison uses the complete demuxed packet sequence. +VideoToolbox comparison verifies native decoding; live AVPlayer smoke tests separately +exercise the actual HLS consumer. Neither substitutes for a subsequent run on the +reporter's four physical devices after this correction. + +## CI and strict-pool reproducibility + +The standalone PR's first run at `48c6aafd` passed the complete normal macOS suite, +the new five-seam native-decoder cases in both normal and strict-pool runs, iOS +Simulator plus release CLI, tvOS/visionOS Simulator, and documentation checks. +Its strict-pool run reported one failure in the unchanged +`SourcePrewarmAdoptionTests.fullyWarmedSourceOpensWithNoConnection`: two requests +were observed where one was expected. That test and prewarm implementation have no +changes in this PR. A complete local rerun using +`LIBDISPATCH_COOPERATIVE_POOL_STRICT=1 swift test --skip-build --disable-xctest` +passed all 4,376 Swift Testing tests in 603 suites. No prewarm code or assertion was +changed or disabled. The subsequent documentation-only commit requests another CI +run; a later green run does not erase the original intermittent result.