From e5c338ba7abd086b54021da885dc3b451927f4d5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 4 Sep 2013 00:58:16 +0200 Subject: [PATCH] avformat/utils: assert position monotonicity in ff_find_last_ts() This ensures that no read timestamp functions finds packets before the search window in ff_find_last_ts() which could cause an infinite loop Signed-off-by: Michael Niedermayer --- libavformat/utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavformat/utils.c b/libavformat/utils.c index 277b559a76..763588b204 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -1779,6 +1779,7 @@ int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t * int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp); if(tmp_ts == AV_NOPTS_VALUE) break; + av_assert0(tmp_pos > pos_max); ts_max = tmp_ts; pos_max = tmp_pos; if(tmp_pos >= filesize)