Add partial Rec. 2020 support.

[movit] / colorspace_conversion_effect_test.cpp

diff --git a/colorspace_conversion_effect_test.cpp b/colorspace_conversion_effect_test.cpp
index 76bcd49aaa6272895b5c6d5e5f0ac6685f2bb488..18f66efeb74a99bf3711c0aaab451f23d0edf036 100644 (file)
--- a/colorspace_conversion_effect_test.cpp
+++ b/colorspace_conversion_effect_test.cpp
@@ -187,6 +187,56 @@ TEST(ColorspaceConversionEffectTest, Rec601_625_Primaries) {
        EXPECT_FLOAT_EQ(1.0f, out_data[4 * 4 + 3]);
 }
 
+TEST(ColorspaceConversionEffectTest, Rec2020_Primaries) {
+       float data[] = {
+               0.0f, 0.0f, 0.0f, 1.0f,
+               1.0f, 1.0f, 1.0f, 1.0f,
+               1.0f, 0.0f, 0.0f, 1.0f,
+               0.0f, 1.0f, 0.0f, 1.0f,
+               0.0f, 0.0f, 1.0f, 1.0f,
+       };
+       float out_data[4 * 5];
+
+       EffectChainTester tester(data, 1, 5, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_REC_2020, GAMMA_LINEAR);
+       tester.run(out_data, GL_RGBA, COLORSPACE_XYZ, GAMMA_LINEAR);
+
+       // Black should stay black.
+       EXPECT_FLOAT_EQ(0.0f, out_data[0 * 4 + 0]);
+       EXPECT_FLOAT_EQ(0.0f, out_data[0 * 4 + 1]);
+       EXPECT_FLOAT_EQ(0.0f, out_data[0 * 4 + 2]);
+       EXPECT_FLOAT_EQ(1.0f, out_data[0 * 4 + 3]);
+
+       // Convert the primaries from XYZ to xyz, and compare to the references
+       // given by Rec. 2020.
+       float white_xyz_sum = out_data[1 * 4 + 0] + out_data[1 * 4 + 1] + out_data[1 * 4 + 2];
+       float white_x = out_data[1 * 4 + 0] / white_xyz_sum;
+       float white_y = out_data[1 * 4 + 1] / white_xyz_sum;
+       EXPECT_NEAR(0.3127, white_x, 1e-3);
+       EXPECT_NEAR(0.3290, white_y, 1e-3);
+       EXPECT_FLOAT_EQ(1.0f, out_data[1 * 4 + 3]);
+
+       float red_xyz_sum = out_data[2 * 4 + 0] + out_data[2 * 4 + 1] + out_data[2 * 4 + 2];
+       float red_x = out_data[2 * 4 + 0] / red_xyz_sum;
+       float red_y = out_data[2 * 4 + 1] / red_xyz_sum;
+       EXPECT_NEAR(0.708, red_x, 1e-3);
+       EXPECT_NEAR(0.292, red_y, 1e-3);
+       EXPECT_FLOAT_EQ(1.0f, out_data[2 * 4 + 3]);
+
+       float green_xyz_sum = out_data[3 * 4 + 0] + out_data[3 * 4 + 1] + out_data[3 * 4 + 2];
+       float green_x = out_data[3 * 4 + 0] / green_xyz_sum;
+       float green_y = out_data[3 * 4 + 1] / green_xyz_sum;
+       EXPECT_NEAR(0.170, green_x, 1e-3);
+       EXPECT_NEAR(0.797, green_y, 1e-3);
+       EXPECT_FLOAT_EQ(1.0f, out_data[3 * 4 + 3]);
+
+       float blue_xyz_sum = out_data[4 * 4 + 0] + out_data[4 * 4 + 1] + out_data[4 * 4 + 2];
+       float blue_x = out_data[4 * 4 + 0] / blue_xyz_sum;
+       float blue_y = out_data[4 * 4 + 1] / blue_xyz_sum;
+       EXPECT_NEAR(0.131, blue_x, 1e-3);
+       EXPECT_NEAR(0.046, blue_y, 1e-3);
+       EXPECT_FLOAT_EQ(1.0f, out_data[4 * 4 + 3]);
+}
+
 TEST(ColorspaceConversionEffectTest, sRGBToRec601_525) {
        float data[] = {
                0.0f, 0.0f, 0.0f, 1.0f,