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mxfdec: check return value of avio_seek

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Avoid modifying state if avio_seek fails.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Joakim Plate 2011-09-14 19:26:48 +02:00 committed by Janne Grunau
parent 0662eea6b0
commit 3359246d9a
1 changed files with 4 additions and 1 deletions
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5
libavformat/mxfdec.c
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@ -1127,13 +1127,16 @@ static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_ti
{ {
AVStream *st = s->streams[stream_index]; AVStream *st = s->streams[stream_index];
int64_t seconds; int64_t seconds;
int ret;
if (!s->bit_rate) if (!s->bit_rate)
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
if (sample_time < 0) if (sample_time < 0)
sample_time = 0; sample_time = 0;
seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den); seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
if ((ret = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET)) < 0)
return ret;
ff_update_cur_dts(s, st, sample_time); ff_update_cur_dts(s, st, sample_time);
return 0; return 0;
} }