-#ifndef _IMAGE_FORMAT_H
-#define _IMAGE_FORMAT_H 1
+#ifndef _MOVIT_IMAGE_FORMAT_H
+#define _MOVIT_IMAGE_FORMAT_H 1
-enum MovitPixelFormat { FORMAT_RGB, FORMAT_RGBA, FORMAT_BGR, FORMAT_BGRA, FORMAT_GRAYSCALE };
+// Note: Movit's internal processing formats do not have enough
+// accuracy to support 12-bit input, so if you want to use Rec. 2020,
+// you should probably stick to 10-bit, or accept somewhat reduced
+// accuracy for 12-bit. Input depths above 8 bits are also generally
+// less tested.
+//
+// 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 ColorSpace {
+namespace movit {
+
+enum MovitPixelFormat {
+ FORMAT_RGB,
+ FORMAT_RGBA_PREMULTIPLIED_ALPHA,
+ FORMAT_RGBA_POSTMULTIPLIED_ALPHA,
+ FORMAT_BGR,
+ FORMAT_BGRA_PREMULTIPLIED_ALPHA,
+ FORMAT_BGRA_POSTMULTIPLIED_ALPHA,
+ FORMAT_GRAYSCALE,
+ FORMAT_RG,
+ FORMAT_R
+};
+
+enum Colorspace {
COLORSPACE_INVALID = -1, // For internal use.
COLORSPACE_sRGB = 0,
COLORSPACE_REC_709 = 0, // Same as sRGB.
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 {
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 {
- ColorSpace color_space;
+ Colorspace color_space;
GammaCurve gamma_curve;
};
-#endif // !defined(_IMAGE_FORMAT_H)
+} // namespace movit
+
+#endif // !defined(_MOVIT_IMAGE_FORMAT_H)