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Parse fact chunks from wav files to find duration.

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Originally committed as revision 26370 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2011-01-15 17:13:32 +00:00
parent 724b1f6a05
commit f9329946d0
1 changed files with 12 additions and 1 deletions
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13
libavformat/wav.c
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@ -232,7 +232,18 @@ static int wav_read_header(AVFormatContext *s,
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
size = find_tag(pb, MKTAG('d', 'a', 't', 'a'));
for (;;) {
if (url_feof(pb))
return -1;
size = next_tag(pb, &tag);
if (tag == MKTAG('d', 'a', 't', 'a')){
break;
}else if (tag == MKTAG('f','a','c','t') && !sample_count){
sample_count = get_le32(pb);
size -= 4;
}
url_fseek(pb, size, SEEK_CUR);
}
if (rf64)
size = data_size;
if (size < 0)