lavu/videotoolbox: expose routine to set CVPixelBufferRef metadata

doc/APIchanges

@@ -14,6 +14,9 @@ libavutil:     2021-04-27
 
 API changes, most recent first:
 
+2021-12-xx - xxxxxxxxxx - lavu 57.13.100 - hwcontext_videotoolbox.h
+  Add av_vt_pixbuf_set_attachments
+
 2021-12-xx - xxxxxxxxxx - lavu 57.13.100 - hwcontext_videotoolbox.h
   Add av_map_videotoolbox_chroma_loc_from_av
   Add av_map_videotoolbox_color_matrix_from_av

libavutil/hwcontext_videotoolbox.c

@@ -571,6 +571,12 @@ static int vt_pixbuf_set_attachments(void *log_ctx,
     return 0;
 }
 
+int av_vt_pixbuf_set_attachments(void *log_ctx,
+                                 CVPixelBufferRef pixbuf, const AVFrame *src)
+{
+    return vt_pixbuf_set_attachments(log_ctx, pixbuf, src);
+}
+
 static int vt_map_frame(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src,
                         int flags)
 {

libavutil/hwcontext_videotoolbox.h

@@ -85,4 +85,11 @@ CFStringRef av_map_videotoolbox_color_primaries_from_av(enum AVColorPrimaries pr
  */
 CFStringRef av_map_videotoolbox_color_trc_from_av(enum AVColorTransferCharacteristic trc);
 
+/**
+ * Update a CVPixelBufferRef's metadata to based on an AVFrame.
+ * Returns 0 if no known equivalent was found.
+ */
+int av_vt_pixbuf_set_attachments(void *log_ctx,
+                                 CVPixelBufferRef pixbuf, const struct AVFrame *src);
+
 #endif /* AVUTIL_HWCONTEXT_VIDEOTOOLBOX_H */

libavutil/version.h

@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  57
-#define LIBAVUTIL_VERSION_MINOR  12
+#define LIBAVUTIL_VERSION_MINOR  13
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \