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) <[email protected]>
Henrik RydgårdandClaude Opus 5.5
c162eb3d74