avformat: Add a mechanism to allow demuxers to detect byte based seeking.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 8 insertions, 0 deletions

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 57603031a4..80d693a113 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1257,6 +1257,14 @@ typedef struct AVFormatContext {
      */
 #define RAW_PACKET_BUFFER_SIZE 2500000
     int raw_packet_buffer_remaining_size;
+
+    /**
+     * IO repositioned flag.
+     * This is set by avformat when the underlaying IO context read pointer
+     * is repositioned, for example when doing byte based seeking.
+     * Demuxers can use the flag to detect such changes.
+     */
+    int io_repositioned;
 } AVFormatContext;
 
 /**