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mpc8: Make sure the first stream exists before parsing the seek table

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit 17d57848fc)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit 557df77eab)
This commit is contained in:
Martin Storsjö
2013-09-11 22:53:15 +03:00
committed by Luca Barbato
parent 486c457675
commit 9291012d52
1 changed files with 5 additions and 0 deletions
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libavformat/mpc8.c
+5
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@@ -137,6 +137,11 @@ static void mpc8_parse_seektable(AVFormatContext *s, int64_t off)
int i, t, seekd;
GetBitContext gb;
if (s->nb_streams == 0) {
av_log(s, AV_LOG_ERROR, "No stream added before parsing seek table\n");
return;
}
avio_seek(s->pb, off, SEEK_SET);
mpc8_get_chunk_header(s->pb, &tag, &size);
if(tag != TAG_SEEKTABLE){