sceAudiocodecCheckNeedMem set neededMem for every codec except AAC, where it
was left at whatever was in the context. Set it to 0x18f20 like the others; our
faked ME memory meant this never blocked, but a game that validates it could.
Also name the two hash-named sceVideocodec exports from their firmware
behaviour: 0x893B32B1 configures the codec during sceMpegCreate in mode 1
(SetMode), and 0xD95C24D5 copies a decoded YCbCr frame between buffers via the
ME (CopyYCbCr), the videocodec-level counterpart of sceMpegBaseYCrCbCopy. Both
are still stubs - only mpeg.prx calls them, on paths nothing we run reaches -
but they are now documented for whoever implements them.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
