Support 10- and 12-bit Y'CbCr output.
[movit] / ycbcr_conversion_effect_test.cpp
index c876267..e532ad3 100644 (file)
@@ -437,4 +437,60 @@ TEST(YCbCrConversionEffectTest, ChangeOutputFormat) {
        expect_equal(cr, out_cr, width, height);
 }
 
+TEST(YCbCrConversionEffectTest, TenBitOutput) {
+       const int width = 1;
+       const int height = 5;
+
+       // Pure-color test inputs.
+       float data[width * height * 4] = {
+               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,
+       };
+       uint32_t out_data[width * height];
+       int expanded_out_data[width * height * 4];
+       int expected_data[width * height * 4] = {
+               // Expected results, calculated using formulas 3.2, 3.3 and 3.4
+               // from Rec. 709. (Except the first two, which are obvious
+               // given the 64–940 range of luminance.)
+                64, 512, 512, 3,
+               940, 512, 512, 3,
+               250, 409, 960, 3,
+               691, 167, 105, 3,
+               127, 960, 471, 3,
+       };
+
+       EffectChainTester tester(NULL, width, height, FORMAT_GRAYSCALE, COLORSPACE_sRGB, GAMMA_LINEAR, GL_RGB10_A2);
+       tester.add_input(data, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, COLORSPACE_sRGB, GAMMA_sRGB);
+
+       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.num_levels = 1024;
+       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;
+
+       tester.add_ycbcr_output(format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, ycbcr_format);
+       tester.run_10_10_10_2(out_data, GL_RGBA, COLORSPACE_sRGB, GAMMA_sRGB);
+
+       // Unpack 10:10:10:2 to 32:32:32:32.
+       for (unsigned i = 0; i < width * height; ++i) {
+               expanded_out_data[i * 4 + 0] = out_data[i] & 0x3ff;
+               expanded_out_data[i * 4 + 1] = (out_data[i] >> 10) & 0x3ff;
+               expanded_out_data[i * 4 + 2] = (out_data[i] >> 20) & 0x3ff;
+               expanded_out_data[i * 4 + 3] = (out_data[i] >> 30);
+       }
+       expect_equal(expected_data, expanded_out_data, 4 * width, height);
+}
+
 }  // namespace movit