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au: add computation for duration

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Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
This commit is contained in:
ami_stuff 2011-07-18 13:59:30 +02:00 committed by Stefano Sabatini
parent 78accb876c
commit 93263dc19e
1 changed files with 8 additions and 2 deletions
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10
libavformat/au.c
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@ -120,7 +120,7 @@ static int au_probe(AVProbeData *p)
static int au_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
int size;
int size, data_size = 0;
unsigned int tag;
AVIOContext *pb = s->pb;
unsigned int id, channels, rate;
@ -132,7 +132,12 @@ static int au_read_header(AVFormatContext *s,
if (tag != MKTAG('.', 's', 'n', 'd'))
return -1;
size = avio_rb32(pb); /* header size */
avio_rb32(pb); /* data size */
data_size = avio_rb32(pb); /* data size in bytes */
if (data_size < 0) {
av_log(s, AV_LOG_ERROR, "Invalid negative data size '%d' found\n", data_size);
return AVERROR_INVALIDDATA;
}
id = avio_rb32(pb);
rate = avio_rb32(pb);
@ -159,6 +164,7 @@ static int au_read_header(AVFormatContext *s,
st->codec->codec_id = codec;
st->codec->channels = channels;
st->codec->sample_rate = rate;
st->duration = (((int64_t)data_size)<<3) / (st->codec->channels * av_get_bits_per_sample(codec));
av_set_pts_info(st, 64, 1, rate);
return 0;
}