[FFmpeg-cvslog] asf: Check return value of more avio_seek calls
Joakim Plate
git at videolan.org
Mon Sep 12 04:40:26 CEST 2011
ffmpeg | branch: master | Joakim Plate <elupus at ecce.se> | Mon Sep 12 04:06:55 2011 +0200| [ac1d489320f476c18d6a8125f73389aecb73f3d3] | committer: Michael Niedermayer
asf: Check return value of more avio_seek calls
This reduces problems when underlying protocol is not
seekable even if marked as such or if the file has been
cut short.
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ac1d489320f476c18d6a8125f73389aecb73f3d3
---
libavformat/asfdec.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c
index 14bd951..fe37372 100644
--- a/libavformat/asfdec.c
+++ b/libavformat/asfdec.c
@@ -1155,7 +1155,8 @@ static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos,
if (s->packet_size > 0)
pos= (pos+s->packet_size-1-s->data_offset)/s->packet_size*s->packet_size+ s->data_offset;
*ppos= pos;
- avio_seek(s->pb, pos, SEEK_SET);
+ if (avio_seek(s->pb, pos, SEEK_SET) < 0)
+ return AV_NOPTS_VALUE;
//printf("asf_read_pts\n");
asf_reset_header(s);
@@ -1197,7 +1198,9 @@ static void asf_build_simple_index(AVFormatContext *s, int stream_index)
int64_t current_pos= avio_tell(s->pb);
int i;
- avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
+ if(avio_seek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET) < 0)
+ return;
+
ff_get_guid(s->pb, &g);
/* the data object can be followed by other top-level objects,
@@ -1269,7 +1272,8 @@ static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int
/* do the seek */
av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
- avio_seek(s->pb, pos, SEEK_SET);
+ if(avio_seek(s->pb, pos, SEEK_SET) < 0)
+ return -1;
asf_reset_header(s);
return 0;
}
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