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avformat/mxfdec: return error instead of segfaulting if there are no streams

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Fixes segfault from ticket 4350

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-31 13:11:10 +02:00
parent bb1f153a88
commit e43f3c8858
1 changed files with 4 additions and 0 deletions
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4
libavformat/mxfdec.c
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@ -2995,6 +2995,10 @@ static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
if (mxf->op != OPAtom) if (mxf->op != OPAtom)
return mxf_read_packet_old(s, pkt); return mxf_read_packet_old(s, pkt);
// If we have no streams then we basically are at EOF
if (s->nb_streams < 1)
return AVERROR_EOF;
/* OPAtom - clip wrapped demuxing */ /* OPAtom - clip wrapped demuxing */
/* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */ /* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
st = s->streams[0]; st = s->streams[0];