X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr_input_test.cpp;fp=ycbcr_input_test.cpp;h=c932a535fae4e7cf9bbf7ebad33e2fa3e8e9bf34;hp=a5032af657de73935aabaef79983b3d7603a28c7;hb=e8499e3e9892a74c7882af4be14ccdc1e3d92c2b;hpb=ddca8a12a62ffe6b13d86cbd5b3aac75231e8802

diff --git a/ycbcr_input_test.cpp b/ycbcr_input_test.cpp
index a5032af..c932a53 100644
--- a/ycbcr_input_test.cpp
+++ b/ycbcr_input_test.cpp
@@ -688,6 +688,36 @@ TEST(YCbCrTest, WikipediaJPEGMatrices) {
 	EXPECT_NEAR(128.0, offset[2] * 255.0, 1e-3);
 }
 
+TEST(YCbCrTest, BlackmagicForwardMatrix) {
+	YCbCrFormat ycbcr_format;
+	ycbcr_format.luma_coefficients = YCBCR_REC_709;
+	ycbcr_format.full_range = false;
+	ycbcr_format.num_levels = 256;
+
+	float offset[3];
+	Eigen::Matrix3d ycbcr_to_rgb;
+	compute_ycbcr_matrix(ycbcr_format, offset, &ycbcr_to_rgb);
+
+	Eigen::Matrix3d rgb_to_ycbcr = ycbcr_to_rgb.inverse();
+
+	// Values from DeckLink SDK documentation.
+	EXPECT_NEAR( 0.183, rgb_to_ycbcr(0,0), 1e-3);
+	EXPECT_NEAR( 0.614, rgb_to_ycbcr(0,1), 1e-3);
+	EXPECT_NEAR( 0.062, rgb_to_ycbcr(0,2), 1e-3);
+
+	EXPECT_NEAR(-0.101, rgb_to_ycbcr(1,0), 1e-3);
+	EXPECT_NEAR(-0.338, rgb_to_ycbcr(1,1), 1e-3);
+	EXPECT_NEAR( 0.439, rgb_to_ycbcr(1,2), 1e-3);
+
+	EXPECT_NEAR( 0.439, rgb_to_ycbcr(2,0), 1e-3);
+	EXPECT_NEAR(-0.399, rgb_to_ycbcr(2,1), 1e-3);
+	EXPECT_NEAR(-0.040, rgb_to_ycbcr(2,2), 1e-3);
+
+	EXPECT_NEAR( 16.0, offset[0] * 255.0, 1e-3);
+	EXPECT_NEAR(128.0, offset[1] * 255.0, 1e-3);
+	EXPECT_NEAR(128.0, offset[2] * 255.0, 1e-3);
+}
+
 TEST(YCbCrInputTest, NoData) {
 	const int width = 1;
 	const int height = 5;