Merge branch 'master' into epoxy

[movit] / ycbcr_input_test.cpp

diff --git a/ycbcr_input_test.cpp b/ycbcr_input_test.cpp
index 5bd052bc01da0802bb9bf58a162ae87795543dfc..6895b3834a62602aa293c012957638684b471074 100644 (file)
--- a/ycbcr_input_test.cpp
+++ b/ycbcr_input_test.cpp
@@ -1,10 +1,17 @@
 // Unit tests for YCbCrInput.
 // FIXME: This class really ought to support mipmaps.
 
-#include "test_util.h"
+#include <epoxy/gl.h>
+#include <stddef.h>
+
+#include "effect_chain.h"
 #include "gtest/gtest.h"
+#include "test_util.h"
+#include "util.h"
 #include "ycbcr_input.h"
 
+namespace movit {
+
 TEST(YCbCrInput, Simple444) {
        const int width = 1;
        const int height = 5;
@@ -165,6 +172,61 @@ TEST(YCbCrInput, Rec709) {
        expect_equal(expected_data, out_data, 4 * width, height, 0.025, 0.002);
 }
 
+TEST(YCbCrInput, Rec2020) {
+       const int width = 1;
+       const int height = 5;
+
+       // Pure-color test inputs, calculated with the formulas in Rec. 2020
+       // page 4, tables 4 and 5 (for conventional non-constant luminance).
+       // Note that we still use 8-bit inputs, even though Rec. 2020 is only
+       // defined for 10- and 12-bit.
+       unsigned char y[width * height] = {
+               16, 235, 74, 164, 29,
+       };
+       unsigned char cb[width * height] = {
+               128, 128, 97, 47, 240,
+       };
+       unsigned char cr[width * height] = {
+               128, 128, 240, 25, 119,
+       };
+       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_2020;
+       ycbcr_format.full_range = false;
+       ycbcr_format.chroma_subsampling_x = 1;
+       ycbcr_format.chroma_subsampling_y = 1;
+       ycbcr_format.cb_x_position = 0.5f;
+       ycbcr_format.cb_y_position = 0.5f;
+       ycbcr_format.cr_x_position = 0.5f;
+       ycbcr_format.cr_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;
@@ -357,3 +419,62 @@ TEST(YCbCrInput, DifferentCbAndCrPositioning) {
        tester.run(out_data, GL_BLUE, COLORSPACE_sRGB, GAMMA_sRGB);
        expect_equal(expected_data_blue, out_data, width, height, 0.01, 0.001);
 }
+
+TEST(YCbCrInput, PBO) {
+       const int width = 1;
+       const int height = 5;
+
+       // Pure-color test inputs, calculated with the formulas in Rec. 601
+       // section 2.5.4.
+       unsigned char data[width * height * 3] = {
+               16, 235, 81, 145, 41,
+               128, 128, 90, 54, 240,
+               128, 128, 240, 34, 110,
+       };
+       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];
+
+       GLuint pbo;
+       glGenBuffers(1, &pbo);
+       glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
+       glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, width * height * 3, data, 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 = 1;
+       ycbcr_format.chroma_subsampling_y = 1;
+       ycbcr_format.cb_x_position = 0.5f;
+       ycbcr_format.cb_y_position = 0.5f;
+       ycbcr_format.cr_x_position = 0.5f;
+       ycbcr_format.cr_y_position = 0.5f;
+
+       YCbCrInput *input = new YCbCrInput(format, ycbcr_format, width, height);
+       input->set_pixel_data(0, (unsigned char *)BUFFER_OFFSET(0), pbo);
+       input->set_pixel_data(1, (unsigned char *)BUFFER_OFFSET(width * height), pbo);
+       input->set_pixel_data(2, (unsigned char *)BUFFER_OFFSET(width * height * 2), 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