avformat/avio{,buf}: introduce public AVIOContext::bytes_{read,written}

Such fields can be seen as generally useful in cases where the
API user is not implementing custom AVIO callbacks, but still would
like to know if data is being read or written out, such as in case
data is being read from input but no AVPacket has been received yet.

1 files changed, 5 insertions, 0 deletions

diff --git a/libavformat/avio_internal.h b/libavformat/avio_internal.h
index 467e80701f..187433f283 100644
--- a/libavformat/avio_internal.h
+++ b/libavformat/avio_internal.h
@@ -52,6 +52,11 @@ typedef struct FFIOContext {
     int64_t bytes_read;
 
     /**
+     * Bytes written statistic
+     */
+    int64_t bytes_written;
+
+    /**
      * seek statistic
      */
     int seek_count;