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demux_mkv: remove incorrect comment

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In the previous commit, I claimed that this GUID stuff was a libavformat
extension, but that seems to be completely wrong. (LATM might be an
extension of some kind, though.)

I don't know what Microsoft calls this GUID "suffix" though. It's
generally used to wrap wav format tags and video FourCCs as GUIDs.
I guess you could grep Microsoft headers for it to find its name,
or something.
This commit is contained in:
wm4 2017-06-03 23:23:35 +02:00
parent eae693fc46
commit fdd75f90ae
1 changed files with 0 additions and 1 deletions
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demux/codec_tags.c
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@ -75,7 +75,6 @@ static void map_audio_pcm_tag(struct mp_codec_params *c)
// WAVEFORMATEXTENSIBLE.SubFormat // WAVEFORMATEXTENSIBLE.SubFormat
unsigned char *subformat = c->extradata + 6; unsigned char *subformat = c->extradata + 6;
if (memcmp(subformat + 4, guid_ffext + 4, 12) == 0) { if (memcmp(subformat + 4, guid_ffext + 4, 12) == 0) {
// libavformat extension.
c->codec_tag = AV_RL32(subformat); c->codec_tag = AV_RL32(subformat);
c->codec = lookup_tag(c->type, c->codec_tag); c->codec = lookup_tag(c->type, c->codec_tag);
} }