@@ -25,8 +25,8 @@

 #include "libavutil/avutil.h"

 #define LIBAVFILTER_VERSION_MAJOR  1

-#define LIBAVFILTER_VERSION_MINOR 20

-#define LIBAVFILTER_VERSION_MICRO  1

+#define LIBAVFILTER_VERSION_MINOR 21

+#define LIBAVFILTER_VERSION_MICRO  0

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

                                                LIBAVFILTER_VERSION_MINOR, \

@@ -121,6 +121,19 @@ typedef struct AVFilterPicRef

 } AVFilterPicRef;

 /**

+ * Copy properties of src to dst, without copying the actual video

+ * data.

+ */

+static inline void avfilter_copy_picref_props(AVFilterPicRef *dst, AVFilterPicRef *src)

+{

+    dst->pts             = src->pts;

+    dst->pos             = src->pos;

+    dst->pixel_aspect    = src->pixel_aspect;

+    dst->interlaced      = src->interlaced;

+    dst->top_field_first = src->top_field_first;

+}

+

+/**

  * Add a new reference to a picture.

  * @param ref   an existing reference to the picture

  * @param pmask a bitmask containing the allowable permissions in the new