X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=image_format.h;h=df6f48747cdc3e933dfa6cdaf6cec88f544b14a3;hb=9b95345e8e1dde29991638ed69def0cf187e28de;hp=3766235db670f3437d427d52e851597e2190c424;hpb=6dea8d2a6695a45aa6209425cdcfb4eabf704340;p=movit

diff --git a/image_format.h b/image_format.h
index 3766235..df6f487 100644
--- a/image_format.h
+++ b/image_format.h
@@ -1,6 +1,12 @@
 #ifndef _MOVIT_IMAGE_FORMAT_H
 #define _MOVIT_IMAGE_FORMAT_H 1
 
+// Note: Input depths above 8 bits have not been tested, so Rec. 2020
+// support should be regarded as somewhat untested (it assumes 10-
+// or 12-bit input). We also only support “conventional non-constant
+// luminance” for Rec. 2020, where Y' is derived from R'G'B' instead of
+// RGB, since this is the same system as used in Rec. 601 and 709.
+
 enum MovitPixelFormat {
 	FORMAT_RGB,
 	FORMAT_RGBA_PREMULTIPLIED_ALPHA,
@@ -18,6 +24,7 @@ enum Colorspace {
 	COLORSPACE_REC_601_525 = 1,
 	COLORSPACE_REC_601_625 = 2,
 	COLORSPACE_XYZ = 3,  // Mostly useful for testing and debugging.
+	COLORSPACE_REC_2020 = 4,
 };
 
 enum GammaCurve {
@@ -26,11 +33,14 @@ enum GammaCurve {
 	GAMMA_sRGB = 1,
 	GAMMA_REC_601 = 2,
 	GAMMA_REC_709 = 2,  // Same as Rec. 601.
+	GAMMA_REC_2020_10_BIT = 2,  // Same as Rec. 601.
+	GAMMA_REC_2020_12_BIT = 3,
 };
 
 enum YCbCrLumaCoefficients {
 	YCBCR_REC_601 = 0,
 	YCBCR_REC_709 = 1,
+	YCBCR_REC_2020 = 2,
 };
 
 struct ImageFormat {