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matroskadec: ensure we only consider chapters which are properly ordered 

Originally committed as revision 16612 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2009-01-15 00:42:57 +00:00
parent 89ac55ada9
commit e0e4be590c
1 changed files with 5 additions and 1 deletions
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6
libavformat/matroskadec.c
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@ -1076,6 +1076,7 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
EbmlList *index_list;
MatroskaIndex *index;
int index_scale = 1;
uint64_t max_start = 0;
Ebml ebml = { 0 };
AVStream *st;
int i, j;
@ -1365,10 +1366,13 @@ static int matroska_read_header(AVFormatContext *s, AVFormatParameters *ap)
chapters = chapters_list->elem;
for (i=0; i<chapters_list->nb_elem; i++)
if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid)
if (chapters[i].start != AV_NOPTS_VALUE && chapters[i].uid
&& (max_start==0 || chapters[i].start > max_start)) {
ff_new_chapter(s, chapters[i].uid, (AVRational){1, 1000000000},
chapters[i].start, chapters[i].end,
chapters[i].title);
max_start = chapters[i].start;
}
index_list = &matroska->index;
index = index_list->elem;