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demux_mkv: support channel layout in VfW muxed PCM

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Fixes #2820.
This commit is contained in:
wm4 2016-02-14 12:42:24 +01:00
parent d3ed550792
commit fa821de8b2
1 changed files with 7 additions and 1 deletions
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8
demux/demux_mkv.c
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@ -1484,6 +1484,7 @@ static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track)
unsigned char *extradata = track->private_data;
unsigned int extradata_len = track->private_size;
uint64_t chmask = 0;
if (!track->a_osfreq)
track->a_osfreq = track->a_sfreq;
@ -1516,6 +1517,9 @@ static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track)
extradata_len = track->private_size - 18;
sh_a->bits_per_coded_sample = track->a_bps;
mp_set_codec_from_tag(sh_a);
// WAVEFORMATEXTENSIBLE.dwChannelMask
if (sh_a->codec_tag == 0xfffe && extradata_len >= 6)
chmask = AV_RL32(extradata + 2);
} else if (!strcmp(track->codec_id, "A_PCM/INT/LIT")) {
bool sign = sh_a->bits_per_coded_sample > 8;
mp_set_pcm_codec(sh_a, sign, false, sh_a->bits_per_coded_sample, false);
@ -1635,7 +1639,9 @@ static int demux_mkv_open_audio(demuxer_t *demuxer, mkv_track_t *track)
if (!sh_a->codec)
goto error;
mp_chmap_set_unknown(&sh_a->channels, track->a_channels);
mp_chmap_from_waveext(&sh_a->channels, chmask);
if (sh_a->channels.num != track->a_channels)
mp_chmap_set_unknown(&sh_a->channels, track->a_channels);
const char *codec = sh_a->codec;
if (!strcmp(codec, "mp3") || !strcmp(codec, "truehd")) {