From 77b7c334be9712af37ad7062179e8043b83ffc76 Mon Sep 17 00:00:00 2001 From: Stefan Gehrer Date: Fri, 3 Dec 2010 07:49:07 +0000 Subject: [PATCH] skip top-level objects to search for the simple index in ASF files Originally committed as revision 25863 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/asfdec.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c index b4be9d466f..59f670bf45 100644 --- a/libavformat/asfdec.c +++ b/libavformat/asfdec.c @@ -1138,7 +1138,20 @@ static void asf_build_simple_index(AVFormatContext *s, int stream_index) url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET); get_guid(s->pb, &g); - if (!guidcmp(&g, &index_guid)) { + + /* the data object can be followed by other top-level objects, + skip them until the simple index object is reached */ + while (guidcmp(&g, &index_guid)) { + int64_t gsize= get_le64(s->pb); + if (gsize < 24 || url_feof(s->pb)) { + url_fseek(s->pb, current_pos, SEEK_SET); + return; + } + url_fseek(s->pb, gsize-24, SEEK_CUR); + get_guid(s->pb, &g); + } + + { int64_t itime, last_pos=-1; int pct, ict; int64_t av_unused gsize= get_le64(s->pb);