mirror of
https://github.com/boykopovar/AnyPS5.git
synced 2026-10-22 08:33:12 -05:00
Seif Allah Karoui
86de982f25
Queue demux loop epochs and report each once when audio or video first delivers that pass. Discard pending loop boundaries on seek and restart. Add playback regressions and record unverified console callback timing. AI-assisted: yes (Codex).
21 lines
3.5 KiB
Markdown
21 lines
3.5 KiB
Markdown
# libSceAvPlayer technical debt
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### Silent stubs
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- [libSceAvPlayer](../../../core/libs/prx/libSceAvPlayer/Export.cpp): `sceAvPlayerSetLogCallback` accepts a callback that is never called, as the player produces no log messages, and `sceAvPlayerSetAvailableBandwidth` has no effect, as it governs HLS sources, which `sceAvPlayerAddSource` does not implement.
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- [sceAvPlayerSetTrickSpeed](../../../core/libs/prx/libSceAvPlayer/src/Source.cpp) (libSceAvPlayer) with a negative speed runs the clock backwards but delivers no frames; when a forward speed is set again, playback resumes from the rewound time.
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### Unknown function info
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- [AvPlayer loop warnings](../../../core/libs/prx/libSceAvPlayer/src/Source.cpp) are queued when the first audio or video frame of a loop is delivered, following [KytyPS5's playback boundary tracking](https://github.com/KytyPS5/KytyPS5/blob/a6f4e8e7f456b8697d3102823d3f16400c3e121e/src/libs/avPlayer.cpp#L1038-L1043). The console's exact callback timing is unverified. Decode-ahead does not announce a loop while the caller is consuming the previous pass.
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- [sceAvPlayerAddSource](../../../core/libs/prx/libSceAvPlayer/src/Source.cpp) (libSceAvPlayer) - requests up to 4 additional decode-ahead video framebuffers from the memory replacement beyond `num_output_video_framebuffers` when memory is available; the console's internal buffering behaviour is unknown
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- [sceAvPlayerStartEx](../../../core/libs/prx/libSceAvPlayer/Export.cpp) (libSceAvPlayer) - start info layout unknown; it is ignored and playback starts as with `sceAvPlayerStart`
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- [sceAvPlayerInit / sceAvPlayerInitEx](../../../core/libs/prx/libSceAvPlayer/src/Player.cpp) (libSceAvPlayer) - behaviour without a memory replacement unknown; frame and sample buffers then come from the guest heap
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- [sceAvPlayerInitEx](../../../core/libs/prx/libSceAvPlayer/Export.cpp) (libSceAvPlayer) - the PS5 init data layout (`this_size` 0x230: auto start at 0x74, nine 0x30-byte thread parameter blocks from 0x78, output video frame buffer count at 0x228) follows [KytyPS5](https://github.com/KytyPS5/KytyPS5/blob/main/src/libs/avPlayer.cpp), [prosper](https://github.com/mattias800/prosper/blob/main/prosper/src/hle/video/avplayer.cpp), [SharpProspero](https://github.com/SvenGDK/SharpProspero/blob/main/src/SharpProspero/Interop/Media/AvPlayer.cs) and [sharpemu](https://github.com/sharpemu/sharpemu/blob/main/src/SharpEmu.Libs/AvPlayer/AvPlayerExports.cs), which agree on it. PPSA25063 fills the same fields, writes auto start 0 and starts playback with `sceAvPlayerStart`; a title that sets auto start has not been seen. A smaller `this_size` is read with the PS4 offsets. The thread parameters are ignored
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- [AvPlayer auto start](../../../core/libs/prx/libSceAvPlayer/src/Player.cpp) (libSceAvPlayer) - the auto start that `sceAvPlayerAddSource` queues for a player with auto start or without an event callback starts the player only while it is still ready: a title that starts the player itself before the auto start runs keeps its playback and the frames it holds. Not confirmed on a title.
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### Functional
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- [sceAvPlayerGetVideoData](../../../core/libs/prx/libSceAvPlayer/src/Source.cpp) (libSceAvPlayer) in sync mode `SCE_AVPLAYER_AV_SYNC_MODE_NONE` skips queued frames that the audio clock has already passed while the title pulls audio, so a title that requests video slower than the film's frame rate keeps the picture with the sound. Whether the console hands out every frame in this mode is unknown. PPSA12544 requests 7-19 frames per second for a 30 fps cinematic
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