X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=ycbcr_input_test.cpp;h=7b2a6fd51f0140bc2023411a5bc7b30afab1e848;hp=70cbc12fba533aa86717908ec59ffac26e0d6b8e;hb=c19875219539e598eb364050ddbb12ae3c64ec31;hpb=6f0ec2d7c127b139ed7cc42348bf518236e12dbd

diff --git a/ycbcr_input_test.cpp b/ycbcr_input_test.cpp
index 70cbc12..7b2a6fd 100644
--- a/ycbcr_input_test.cpp
+++ b/ycbcr_input_test.cpp
@@ -108,6 +108,57 @@ TEST(YCbCrInput, FullRangeRec601) {
 	expect_equal(expected_data, out_data, 4 * width, height, 0.025, 0.002);
 }
 
+TEST(YCbCrInput, Rec709) {
+	const int width = 1;
+	const int height = 5;
+
+	// Pure-color test inputs, calculated with the formulas in Rec. 709
+	// page 19, items 3.4 and 3.5.
+	unsigned char y[width * height] = {
+		16, 235, 63, 173, 32, 
+	};
+	unsigned char cb[width * height] = {
+		128, 128, 102, 42, 240,
+	};
+	unsigned char cr[width * height] = {
+		128, 128, 240, 26, 118,
+	};
+	float expected_data[4 * width * height] = {
+		0.0, 0.0, 0.0, 1.0,
+		1.0, 1.0, 1.0, 1.0,
+		1.0, 0.0, 0.0, 1.0,
+		0.0, 1.0, 0.0, 1.0,
+		0.0, 0.0, 1.0, 1.0,
+	};
+	float out_data[4 * width * height];
+
+	EffectChainTester tester(NULL, width, height);
+
+	ImageFormat format;
+	format.color_space = COLORSPACE_sRGB;
+	format.gamma_curve = GAMMA_sRGB;
+
+	YCbCrFormat ycbcr_format;
+	ycbcr_format.luma_coefficients = YCBCR_REC_709;
+	ycbcr_format.full_range = false;
+	ycbcr_format.chroma_subsampling_x = 1;
+	ycbcr_format.chroma_subsampling_y = 1;
+	ycbcr_format.chroma_x_position = 0.5f;
+	ycbcr_format.chroma_y_position = 0.5f;
+
+	YCbCrInput *input = new YCbCrInput(format, ycbcr_format, width, height);
+	input->set_pixel_data(0, y);
+	input->set_pixel_data(1, cb);
+	input->set_pixel_data(2, cr);
+	tester.get_chain()->add_input(input);
+
+	tester.run(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+
+	// Y'CbCr isn't 100% accurate (the input values are rounded),
+	// so we need some leeway.
+	expect_equal(expected_data, out_data, 4 * width, height, 0.025, 0.002);
+}
+
 TEST(YCbCrInput, Subsampling420) {
 	const int width = 4;
 	const int height = 4;