From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Sat, 13 Oct 2012 22:54:07 +0000 (+0200)
Subject: Support conversion to and from the XYZ color space.
X-Git-Tag: 1.0~254
X-Git-Url: https://git.sesse.net/?p=movit;a=commitdiff_plain;h=0490917aca6b8e6057c04c8becc820a8e849a801;hp=c9a573370a976df3675d4bd3195a49c854ab7db9

Support conversion to and from the XYZ color space.
---

diff --git a/colorspace_conversion_effect.cpp b/colorspace_conversion_effect.cpp
index 9726b3b..2f74a27 100644
--- a/colorspace_conversion_effect.cpp
+++ b/colorspace_conversion_effect.cpp
@@ -25,6 +25,13 @@ ColorSpaceConversionEffect::ColorSpaceConversionEffect()
 
 void get_xyz_matrix(ColorSpace space, Matrix3x3 m)
 {
+	if (space == COLORSPACE_XYZ) {
+		m[0] = 1.0f; m[3] = 0.0f; m[6] = 0.0f;
+		m[1] = 0.0f; m[4] = 1.0f; m[7] = 0.0f;
+		m[2] = 0.0f; m[5] = 0.0f; m[8] = 1.0f;
+		return;
+	}
+
 	double x_R, x_G, x_B;
 	double y_R, y_G, y_B;
 	double Y_R, Y_G, Y_B;
diff --git a/image_format.h b/image_format.h
index 55aa8d4..f84a0f4 100644
--- a/image_format.h
+++ b/image_format.h
@@ -9,6 +9,7 @@ enum ColorSpace {
 	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.
 };
 
 enum GammaCurve {