av_mastering_display_metadata_alloc() is not useful in scenarios where you need
to
know the runtime size of AVMasteringDisplayMetadata.
Signed-off-by: James Almer <jamr...@gmail.com>
---
Could also name it av_mastering_display_metadata_alloc2()
libavutil/mastering_display_metadata.c | 13 +++++++++++++
libavutil/mastering_display_metadata.h | 9 +++++++++
2 files changed, 22 insertions(+)
diff --git a/libavutil/mastering_display_metadata.c
b/libavutil/mastering_display_metadata.c
index 6069347617..ea41f13f9d 100644
--- a/libavutil/mastering_display_metadata.c
+++ b/libavutil/mastering_display_metadata.c
@@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <stddef.h>
#include <stdint.h>
#include <string.h>
@@ -29,6 +30,18 @@ AVMasteringDisplayMetadata
*av_mastering_display_metadata_alloc(void)
return av_mallocz(sizeof(AVMasteringDisplayMetadata));
}
+AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc_size(size_t
*size)
+{
+ AVMasteringDisplayMetadata *mastering =
av_mallocz(sizeof(AVMasteringDisplayMetadata));
+ if (!mastering)
+ return NULL;
+
+ if (size)
+ *size = sizeof(*mastering);
+
+ return mastering;
+}
+
AVMasteringDisplayMetadata
*av_mastering_display_metadata_create_side_data(AVFrame *frame)
{
AVFrameSideData *side_data = av_frame_new_side_data(frame,
diff --git a/libavutil/mastering_display_metadata.h
b/libavutil/mastering_display_metadata.h
index c23b07c3cd..52fcef9e37 100644
--- a/libavutil/mastering_display_metadata.h
+++ b/libavutil/mastering_display_metadata.h
@@ -77,6 +77,15 @@ typedef struct AVMasteringDisplayMetadata {
*/
AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc(void);
+/**
+ * Allocate an AVMasteringDisplayMetadata structure and set its fields to
+ * default values. The resulting struct can be freed using av_freep().
+ *
+ * @return An AVMasteringDisplayMetadata filled with default values or NULL
+ * on failure.
+ */
+AVMasteringDisplayMetadata *av_mastering_display_metadata_alloc_size(size_t
*size);
+
/**
* Allocate a complete AVMasteringDisplayMetadata and add it to the frame.
*
--
2.44.0
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