Broken Sword - Shadow of the Templars: Reforged stops at AJM decoding codec 23, which is not one of the codec ids known in Ajm.cpp (MP3 0, ATRAC9 1, M4AAC 2, Opus 24).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Ghost of Yotei (PPSA26344, v1.008, eboot 0x2e1cfc) creates an M4AAC
instance (codec 2) and calls sceAjmBatchJobControl with flags
0x200000006000 (RESET | INITIALIZE | SIDEBAND_GAPLESS_DECODE), 8 bytes of
gapless decode plus 8 bytes of M4AAC initialize parameters and an 8-byte
result (#884); INITIALIZE for M4AAC threw on main.
- INITIALIZE (control and sceAjmBatchJobInitialize) reads the 8-byte
{config type (1 ADTS, 2 raw), sampling frequency index} block of
shadPS4 ajm_aac.h at 443f0224; an invalid type or a raw index above 11
returns the invalid parameter result. Raw input is configured from the
instance channels (0 is stereo) as in shadPS4 ajm_aac.cpp.
- RUN decodes ADTS frames (length from the header) and raw access units
(the whole input, as fdk-aac's raw transport) with FFmpeg's AAC decoder
into the instance's S16, S32 or float PCM, with the framework's gapless,
resampling, stream, format and multiple-frames sidebands.
- Without ENABLE_NONDELAY_OUTPUT the first two frames after
initialization or reset produce no output, as in shadPS4. A decoder
error returns CODEC_ERROR | FATAL. The codec info is {heaac, reserved};
the format reports the last frame's bitrate with fdk-aac's formula.
- Throws for what the sources do not settle: ADTS resynchronization,
profiles other than AAC LC, several raw data blocks per frame, channel
configurations other than 1, 2 and 6, more channels than the instance,
HE-AAC without ENABLE_SBR_DECODE, raw input with RUN_MULTIPLE_FRAMES or
several access units, a frame longer than the reserved room, and
unknown codec flags.
guest_ajm decodes an embedded 5-frame stereo ADTS fixture (two chirps,
encoded by FFmpeg 6.1.1's aac encoder at 64 kbit/s) frame by frame, in
one multiple-frames run, as float, as raw access units and with gapless
trimming, and checks sample counts, format, codec info, the delay frames,
RESET, partial input, missing room and the correlation of each channel
with its input chirp at the 1024-sample encoder delay; plus the
INITIALIZE validation results and the refusals.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
A family 255 instance with more than one channel carries no stream count
or mapping in its initialization words, so its decoder now opens on the
first packet: the multistream packet's self-delimited streams are counted
(RFC 6716 appendix B), each stream's TOC stereo flag marks it as coupled,
and the channels map in order. A packet whose streams do not make the
channel count throws.
Metal Gear Solid 4 Master Collection (PPSA18194) initializes a 4-channel
family 255 decoder for its intro movie.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Adrià