Add skip_to_keyframe stream variable.

This replaces the matroskadec one with the same name.
The advantage is not only easier reuse in other demuxers
but also that we can make the decisions after the parser.
This fixes seeking in files that mark the keyframes incorrectly,
for example the file in track ticket #1003.
The matroska variable is still kept to be able to complain
about such broken files.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 5a11fdcc9f..d2727d4d1d 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -787,6 +787,11 @@ typedef struct AVStream {
      * NOT PART OF PUBLIC API
      */
     int request_probe;
+    /**
+     * Indicates that everything up to the next keyframe
+     * should be discarded.
+     */
+    int skip_to_keyframe;
 } AVStream;
 
 #define AV_PROGRAM_RUNNING 1