avformat/aviobuf: add support for specifying minimum packet size and marking flush points

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 12 insertions, 1 deletions

diff --git a/libavformat/avio.h b/libavformat/avio.h
index 844a5723d3..f14b003ba5 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -137,7 +137,13 @@ enum AVIODataMarkerType {
      * Trailer data, which doesn't contain actual content, but only for
      * finalizing the output file.
      */
-    AVIO_DATA_MARKER_TRAILER
+    AVIO_DATA_MARKER_TRAILER,
+    /**
+     * A point in the output bytestream where the underlying AVIOContext might
+     * flush the buffer depending on latency or buffering requirements. Typically
+     * means the end of a packet.
+     */
+    AVIO_DATA_MARKER_FLUSH_POINT,
 };
 
 /**
@@ -339,6 +345,11 @@ typedef struct AVIOContext {
      * used keeping track of already written data for a later flush.
      */
     unsigned char *buf_ptr_max;
+
+    /**
+     * Try to buffer at least this amount of data before flushing it
+     */
+    int min_packet_size;
 } AVIOContext;
 
 /**