The 28- and 32-byte M4AAC parameter blocks carry two fields at offsets
24 and 28 whose range errors fpPS4 names
SCE_AUDIODEC_ERROR_M4AAC_INVALID_ENABLE_NONDELAY_OUTPUT (0x807F0305) and
SCE_AUDIODEC_ERROR_M4AAC_INVALID_SURROUND_CHANNEL_INTERLEAVE_ORDER
(0x807F0306). shadPS4's AJM AAC decoder outputs every decoded frame from
the first one on when non-delay output is enabled, which is what the
decoder here does, so a decoder created with non-delay output 1 is
accepted and decodes as before. Surround channel interleave orders 1
and 2 still throw, now naming the order: no source says which order
each value selects. Name both errors and test that every access unit
yields its frame from the first one with non-delay output enabled.
ui_enable_heaac was ignored and FFmpeg applied Parametric Stereo, so an
HE-AAC v2 stream decoded to 48 kHz stereo whatever the flag: 2048
samples in 2 channels per frame, and ERROR_INVALID_PCM_SIZE for a PCM
buffer sized for the console's output. The console returns the 24 kHz
mono core with HE-AAC disabled, and SBR output at 48 kHz in one channel
with it enabled.
AAC access units now reach FFmpeg without their ADTS header, with an
AudioSpecificConfig built from the header or from the raw parameters.
With HE-AAC disabled it signals SBR as absent. With HE-AAC enabled SBR
stays implicit, and a mono stream that FFmpeg decodes to two channels
is reopened with SBR present and Parametric Stereo absent. The new test
decodes fdk-aac HE-AAC v2 and HE-AAC stereo streams, ADTS and raw, with
HE-AAC on and off; it aborts on main.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
Yunus Shaikh