matroskadec: full seeking support in index-less files
when trying to seek past the last index entry, just parse more clusters to add them to the index, until an index entry match the desired position
Originally committed as revision 14959 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 9ab8126..68d3aa3 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1657,11 +1657,15 @@
if (timestamp < 0)
timestamp = 0;
- index = av_index_search_timestamp(st, timestamp, flags);
- if (index < 0)
- return 0;
+ while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
+ matroska_clear_queue(matroska);
+ if (matroska_parse_cluster(matroska) < 0)
+ break;
+ }
matroska_clear_queue(matroska);
+ if (index < 0)
+ return 0;
url_fseek(s->pb, st->index_entries[index].pos, SEEK_SET);
matroska->skip_to_keyframe = !(flags & AVSEEK_FLAG_ANY);
