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14 Commits
Author SHA1 Message Date
Henrik RydgårdandClaude Opus 5.5 c162eb3d74 sceAudiocodec: Match hardware setup, framing, errors and timing; fix Atrac3 polarity 
Checked against pspautotests audio/audiocodec, recorded on a PSP.

- Atrac3+: at3Related selects headered (mpeg.prx) or raw (libatrac3plus)
  frames, instead of sniffing for the sync word. The header's size field
  is 10 bits, as the context's. Header errors 0x211/0x213, bad frames
  0x20a, all returning SCE_AVCODEC_ERROR_INVALID_DATA with nothing read.
- The first successfully decoded Atrac3+ frame, and the first two AAC
  frames, produce no output. Checked sample-for-sample against hardware.
- Atrac3: the parameter at 0x28 selects the frame layout, as
  libatrac3plus.prx's table maps it. We used to read its low bit as a
  joint-stereo flag, which decoded mono (0x0F) streams as stereo garbage.
  AtracCtx2 had the table's fields swapped the same way.
- at3_standalone's Atrac3 output was inverted relative to the PSP's
  (sceAtrac too). Negate the IMDCT scale.
- CheckNeedMem sizes (AAC is 0x658c), codec 0x1004/0x1005, Init
  validation (AAC sample rate, Atrac3 parameter, Atrac3+ channels), and
  ReleaseEDRAM clearing edramAddr.
- Every call that reaches the ME now blocks for its measured time, and
  decode time is modelled per codec and frame size.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
 2026-09-28 16:57:41 -06:00
Henrik Rydgård d04074a542 Atrac3 (not +): Keep decoding even on broken frames. 
Fixes some music in some unofficial game mods, whose music got broken
in 1.18. Was reported through e-mail by Miguel.
 2025-01-04 01:11:26 +01:00
Henrik Rydgård 083543cc14 Unrelated logging improvement 2025-01-03 21:14:22 +01:00
Henrik Rydgård 090d1f8d0e atrac3: Add a cross platform restrict modifier, use it for the vector math functions 
Also remove redundant parameters.

There are a bunch of other places where we could use this, so just
experimenting here.

This enables autovectorization to work here.
 2024-05-02 16:57:15 +02:00
Henrik Rydgård 7b6b7ebe3c Add some SSE code for an atrac hotspot just for fun, remove function pointers 2024-04-13 10:37:35 +02:00
Henrik Rydgård 68c192b892 Fix some symbol clashes apparently affecting the docker build 2024-04-13 01:06:18 +02:00
Henrik Rydgård 3409db9b90 Remove line endings from atrac3+ log strings 2024-04-12 13:53:20 +02:00
Henrik Rydgård 39b884cfb3 Atrac3/3+: Improve error handling 2024-04-12 11:18:26 +02:00
Henrik Rydgård 45936e8826 Atrac: Add "flush_buffers" api. The ffmpeg atrac decoder was missing this. 2024-04-11 16:35:27 +02:00
Henrik Rydgård 58cb2ba804 Fix playback of atrac3+ when block align not specified 2024-04-11 16:10:31 +02:00
Henrik Rydgård b35b351802 Finally remove the AVCodecContext 2024-04-11 14:50:29 +02:00
Henrik Rydgård 843119411f Stop passing around the AVCodecContext pointer so much 2024-04-11 14:39:59 +02:00
Henrik Rydgård 0d30728832 Remove context parameter from av_log 2024-04-11 14:39:59 +02:00
Henrik Rydgård e10b90b718 Switch at3_standalone to C++ to avoid namespace clashes 2024-04-11 14:39:59 +02:00