On 2/29/2024 1:42 PM, Jan Ekström wrote:
diff --git a/libavutil/frame.h b/libavutil/frame.h
index 921f2212cf..726ca19a03 100644
--- a/libavutil/frame.h
+++ b/libavutil/frame.h
@@ -1060,6 +1060,27 @@ const char *av_frame_side_data_name(enum
AVFrameSideDataType type);
*/
void av_frame_side_data_free(AVFrameSideData ***sd, int *nb_sd);
+#define AV_FRAME_SIDE_DATA_SET_FLAG_NO_DUPLICATES (1 << 0)
+
+/**
+ * Add a new side data entry to a set.
+ *
+ * @param sd pointer to array of side data to which to add another entry.
Or to NULL, to start a new array.
+ * @param nb_sd pointer to an integer containing the number of entries in
+ * the array.
+ * @param type type of the added side data
+ * @param size size of the side data
+ * @param flags Some combination of AV_FRAME_SIDE_DATA_SET_FLAG_* flags, or 0.
+ *
+ * @return newly added side data on success, NULL on error. In case of
+ * AV_FRAME_SIDE_DATA_SET_FLAG_NO_DUPLICATES being set, entries
+ * of matching AVFrameSideDataType will be removed before the
+ * addition is attempted.
+ */
+AVFrameSideData *av_frame_side_data_new(AVFrameSideData ***sd, int *nb_sd,
+ enum AVFrameSideDataType type,
+ size_t size, unsigned int flags);
+
/**
* @}
*/
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