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avformat/oggparsedaala: Check duration for AV_NOPTS_VALUE 

This avoids an integer overflow
the solution matches oggparsevorbis.c and 45581ed15d

Fixes: 700242

Found-by: Thomas Guilbert <tguilbert@google.com>
Reviewed-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-04-01 19:18:34 +02:00
parent 5f23d8b405
commit 679a315424
1 changed files with 1 additions and 1 deletions
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2
libavformat/oggparsedaala.c
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@ -232,7 +232,7 @@ static int daala_packet(AVFormatContext *s, int idx)
os->lastpts = os->lastdts = daala_gptopts(s, idx, os->granule, NULL) - duration;
if(s->streams[idx]->start_time == AV_NOPTS_VALUE) {
s->streams[idx]->start_time = os->lastpts;
if (s->streams[idx]->duration)
if (s->streams[idx]->duration != AV_NOPTS_VALUE)
s->streams[idx]->duration -= s->streams[idx]->start_time;
}
}