frame: add a function for removing side data from a frame

2014-02-19 20:11:21 +01:00
parent 59444c76e6
commit d161ae0a37
4 changed files with 27 additions and 1 deletions
--- a/libavutil/frame.c
+++ b/libavutil/frame.c
@@ -526,3 +526,19 @@ int av_frame_copy(AVFrame *dst, const AVFrame *src)

    return AVERROR(EINVAL);
 }
+
+void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
+{
+    int i;
+
+    for (i = 0; i < frame->nb_side_data; i++) {
+        AVFrameSideData *sd = frame->side_data[i];
+        if (sd->type == type) {
+            av_freep(&sd->data);
+            av_dict_free(&sd->metadata);
+            av_freep(&frame->side_data[i]);
+            frame->side_data[i] = frame->side_data[frame->nb_side_data - 1];
+            frame->nb_side_data--;
+        }
+    }
+}