| Message ID | 20180103081424.47388-2-misty@brew.sh |
|---|---|
| State | Accepted |
| Commit | fde057dfb25e2b6917fc896a0b2dfec0f336b1ce |
| Headers | show |
On Wed, Jan 03, 2018 at 07:14:22PM +1100, misty@brew.sh wrote: > From: Misty De Meo <mistydemeo@gmail.com> > > 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. > --- > libavformat/aiffdec.c | 7 +++++++ > 1 file changed, 7 insertions(+) will apply thanks [...]
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c index 99e05c78ec..a6c180fc8d 100644 --- a/libavformat/aiffdec.c +++ b/libavformat/aiffdec.c @@ -325,6 +325,13 @@ static int aiff_read_header(AVFormatContext *s) 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;
From: Misty De Meo <mistydemeo@gmail.com> 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. --- libavformat/aiffdec.c | 7 +++++++ 1 file changed, 7 insertions(+)