it seems you are correct. i can't playback the ac3 files with afplay and
afconvert, though @constant kAudioFormatAC3 is described in
CoreAudioType.h and i can playback them with quicktime player(not 7 and
without perian). the results are attached.
i did some tests.
decoding test(gsm_ms_at and
- ADTS-formatted AAC didn't work
- Channel layouts were never exported
- Channel mappings were incorrect beyond stereo
- Channel counts weren't updated after packets were decoded
- Timestamps were exported incorrectly
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libavcodec/audiotoolboxdec.c | 286
