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hypermoist
c0f8e85f18
Leave Blu-ray LPCM frames that decode to more PCM than the module's 0x43800-byte output buffer capacity explicitly unsupported, and document the firmware 13.42 wrapping behavior in the technical debt entry. Assisted-by: Antigravity:gemini-3.8-flash
6 lines
912 B
Markdown
6 lines
912 B
Markdown
# libSceAudiodecCpu technical debt
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### Unknown function info
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- [libSceAudiodecCpu codecs](../../../core/libs/prx/libSceAudiodecCpu/Export.cpp) - Argument checks and LPCM decode follow firmware 13.60 disassembly, unverified on console. Only 16- and 24-bit Blu-ray stereo LPCM decodes. These throw through `NotImplemented_nid_no_patch`: non-LPCM codecs (separate modules), DVD LPCM, non-stereo layouts (channel tables not recovered), frames larger than the 0x43800-byte input buffer, frames whose decoded PCM exceeds 0x43800 bytes (firmware 13.42 wraps output at 276,480 bytes, repeating earlier samples), an AU shorter than its frame or a PCM buffer smaller than the output (the module copies without checking), and `InitDecoder` without AU or PCM. Header byte 7 (frame count) and 33-bit timestamp continuation in the param are inferred. The type mask when `sceKernelIsCronos` returns non-zero is not modelled.
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