--- /dev/null
+// Unit tests for YCbCr422InterleavedInput.
+
+#include <epoxy/gl.h>
+#include <stddef.h>
+
+#include "effect_chain.h"
+#include "gtest/gtest.h"
+#include "test_util.h"
+#include "util.h"
+#include "ycbcr_422interleaved_input.h"
+
+namespace movit {
+
+// Adapted from the Simple444 test from YCbCrInputTest.
+TEST(YCbCr422InterleavedInputTest, Simple422) {
+ const int width = 2;
+ const int height = 5;
+
+ // Pure-color test inputs, calculated with the formulas in Rec. 601
+ // section 2.5.4.
+ unsigned char uyvy[width * height * 2] = {
+ /*U=*/128, /*Y=*/ 16, /*V=*/128, /*Y=*/ 16,
+ /*U=*/128, /*Y=*/235, /*V=*/128, /*Y=*/235,
+ /*U=*/ 90, /*Y=*/ 81, /*V=*/240, /*Y=*/ 81,
+ /*U=*/ 54, /*Y=*/145, /*V=*/ 34, /*Y=*/145,
+ /*U=*/240, /*Y=*/ 41, /*V=*/110, /*Y=*/ 41,
+ };
+
+ float expected_data[4 * width * height] = {
+ 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0,
+ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
+ 0.0, 0.0, 1.0, 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_601;
+ ycbcr_format.full_range = false;
+ ycbcr_format.chroma_subsampling_x = 2;
+ ycbcr_format.chroma_subsampling_y = 1;
+ ycbcr_format.cb_x_position = 0.0f; // Doesn't really matter here, since Y is constant.
+ ycbcr_format.cb_y_position = 0.5f;
+ ycbcr_format.cr_x_position = 0.0f;
+ ycbcr_format.cr_y_position = 0.5f;
+
+ YCbCr422InterleavedInput *input = new YCbCr422InterleavedInput(format, ycbcr_format, width, height);
+ input->set_pixel_data(uyvy);
+ 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);
+}
+
+// Adapted from the YCbCrInput test of the same name.
+TEST(YCbCr422InterleavedInputTest, DifferentCbAndCrPositioning) {
+ const int width = 4;
+ const int height = 4;
+
+ unsigned char uyvy[width * height * 2] = {
+ /*U=*/ 64, /*Y=*/126, /*V=*/ 48, /*Y=*/126, /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126,
+ /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126, /*U=*/192, /*Y=*/126, /*V=*/208, /*Y=*/126,
+ /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126, /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126,
+ /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126, /*U=*/128, /*Y=*/126, /*V=*/128, /*Y=*/126,
+ };
+
+ // Chroma samples in this case are always co-sited with a luma sample;
+ // their associated color values and position are marked off in comments.
+ float expected_data_blue[width * height] = {
+ 0.000 /* 0.0 */, 0.250, 0.500 /* 0.5 */, 0.500,
+ 0.500 /* 0.5 */, 0.750, 1.000 /* 1.0 */, 1.000,
+ 0.500 /* 0.5 */, 0.500, 0.500 /* 0.5 */, 0.500,
+ 0.500 /* 0.5 */, 0.500, 0.500 /* 0.5 */, 0.500,
+ };
+ float expected_data_red[width * height] = {
+ 0.000, 0.000 /* 0.0 */, 0.250, 0.500 /* 0.5 */,
+ 0.500, 0.500 /* 0.5 */, 0.750, 1.000 /* 1.0 */,
+ 0.500, 0.500 /* 0.5 */, 0.500, 0.500 /* 0.5 */,
+ 0.500, 0.500 /* 0.5 */, 0.500, 0.500 /* 0.5 */,
+ };
+ float out_data[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_601;
+ ycbcr_format.full_range = false;
+ ycbcr_format.chroma_subsampling_x = 2;
+ ycbcr_format.chroma_subsampling_y = 1;
+ ycbcr_format.cb_x_position = 0.0f;
+ ycbcr_format.cb_y_position = 0.5f;
+ ycbcr_format.cr_x_position = 1.0f;
+ ycbcr_format.cr_y_position = 0.5f;
+
+ YCbCr422InterleavedInput *input = new YCbCr422InterleavedInput(format, ycbcr_format, width, height);
+ input->set_pixel_data(uyvy);
+ tester.get_chain()->add_input(input);
+
+ // Y'CbCr isn't 100% accurate (the input values are rounded),
+ // so we need some leeway.
+ tester.run(out_data, GL_RED, COLORSPACE_sRGB, GAMMA_sRGB);
+ expect_equal(expected_data_red, out_data, width, height, 0.02, 0.002);
+
+ tester.run(out_data, GL_BLUE, COLORSPACE_sRGB, GAMMA_sRGB);
+ expect_equal(expected_data_blue, out_data, width, height, 0.01, 0.001);
+}
+
+TEST(YCbCr422InterleavedInputTest, PBO) {
+ const int width = 2;
+ const int height = 5;
+
+ // Pure-color test inputs, calculated with the formulas in Rec. 601
+ // section 2.5.4.
+ unsigned char uyvy[width * height * 2] = {
+ /*U=*/128, /*Y=*/ 16, /*V=*/128, /*Y=*/ 16,
+ /*U=*/128, /*Y=*/235, /*V=*/128, /*Y=*/235,
+ /*U=*/ 90, /*Y=*/ 81, /*V=*/240, /*Y=*/ 81,
+ /*U=*/ 54, /*Y=*/145, /*V=*/ 34, /*Y=*/145,
+ /*U=*/240, /*Y=*/ 41, /*V=*/110, /*Y=*/ 41,
+ };
+
+ float expected_data[4 * width * height] = {
+ 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 1.0,
+ 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0,
+ 1.0, 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0,
+ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0, 0.0, 1.0,
+ 0.0, 0.0, 1.0, 1.0, 0.0, 0.0, 1.0, 1.0,
+ };
+ float out_data[4 * width * height];
+
+ GLuint pbo;
+ glGenBuffers(1, &pbo);
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
+ glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, width * height * 2, uyvy, GL_STREAM_DRAW);
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+
+ 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_601;
+ ycbcr_format.full_range = false;
+ ycbcr_format.chroma_subsampling_x = 2;
+ ycbcr_format.chroma_subsampling_y = 1;
+ ycbcr_format.cb_x_position = 0.0f; // Doesn't really matter here, since Y is constant.
+ ycbcr_format.cb_y_position = 0.5f;
+ ycbcr_format.cr_x_position = 0.0f;
+ ycbcr_format.cr_y_position = 0.5f;
+
+ YCbCr422InterleavedInput *input = new YCbCr422InterleavedInput(format, ycbcr_format, width, height);
+ input->set_pixel_data((unsigned char *)BUFFER_OFFSET(0), pbo);
+ 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);
+
+ glDeleteBuffers(1, &pbo);
+}
+
+} // namespace movit
projects / movit / blobdiff