Certain AIFF files encode XA ADPCM compressed audio using a chunk
with the tag `APCM`. Aside from this custom chunk type, they're
otherwise standard AIFF files. I've only observed these files in the
Sega Saturn game Sonic Jam so far.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
if(ff_mov_read_chan(s, pb, st, size) < 0)
return AVERROR_INVALIDDATA;
break;
+ case MKTAG('A','P','C','M'): /* XA ADPCM compressed sound chunk */
+ st->codecpar->codec_id = AV_CODEC_ID_ADPCM_XA;
+ aiff->data_end = avio_tell(pb) + size;
+ offset = avio_tell(pb) + 8;
+ /* This field is unknown and its data seems to be irrelevant */
+ avio_rb32(pb);
+ st->codecpar->block_align = avio_rb32(pb);
case 0:
if (offset > 0 && st->codecpar->block_align) // COMM && SSND
goto got_sound;