diff --git a/libavutil/mastering_display_metadata.h
b/libavutil/mastering_display_metadata.h
index 847b0b62c6..3de58bf468 100644
--- a/libavutil/mastering_display_metadata.h
+++ b/libavutil/mastering_display_metadata.h
@@ -66,6 +66,16 @@ typedef struct AVMasteringDisplayMetadata {
*/
int has_luminance;
+ /**
+ * The power-law response exponent needed to compensate for nonlinearity.
+ */
+ AVRational gamma;
+
+ /**
+ * Flag indicating whether the gamma has been set.
+ */
+ int has_gamma;
+
} AVMasteringDisplayMetadata;
In my opinion we should not add new fields to structures that map 1:1 to
something defined elsewhere (with the exception of booleans).
I think this should be a separate side data and type, ie AVGammaResponse,
that can of course reside in the same header.
--
Vittorio
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