lavu: add support for Content Light Level side metadata

As found in HEVC.

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/libavutil/mastering_display_metadata.c b/libavutil/mastering_display_metadata.c
index e1683e55c7..6069347617 100644
--- a/libavutil/mastering_display_metadata.c
+++ b/libavutil/mastering_display_metadata.c
@@ -41,3 +41,26 @@ AVMasteringDisplayMetadata *av_mastering_display_metadata_create_side_data(AVFra
 
     return (AVMasteringDisplayMetadata *)side_data->data;
 }
+
+AVContentLightMetadata *av_content_light_metadata_alloc(size_t *size)
+{
+    AVContentLightMetadata *metadata = av_mallocz(sizeof(AVContentLightMetadata));
+
+    if (size)
+        *size = sizeof(*metadata);
+
+    return metadata;
+}
+
+AVContentLightMetadata *av_content_light_metadata_create_side_data(AVFrame *frame)
+{
+    AVFrameSideData *side_data = av_frame_new_side_data(frame,
+                                                        AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
+                                                        sizeof(AVContentLightMetadata));
+    if (!side_data)
+        return NULL;
+
+    memset(side_data->data, 0, sizeof(AVContentLightMetadata));
+
+    return (AVContentLightMetadata *)side_data->data;
+}