| // SPDX-License-Identifier: GPL-2.0+ |
| |
| #include <kunit/test.h> |
| |
| #include <drm/drm_fixed.h> |
| #include <drm/drm_fourcc.h> |
| |
| #include "../../drm_crtc_internal.h" |
| |
| #include "../vkms_formats.h" |
| |
| #define TEST_BUFF_SIZE 50 |
| |
| MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING"); |
| |
| /** |
| * struct pixel_yuv_u8 - Internal representation of a pixel color. |
| * @y: Luma value, stored in 8 bits, without padding, using |
| * machine endianness |
| * @u: Blue difference chroma value, stored in 8 bits, without padding, using |
| * machine endianness |
| * @v: Red difference chroma value, stored in 8 bits, without padding, using |
| * machine endianness |
| */ |
| struct pixel_yuv_u8 { |
| u8 y, u, v; |
| }; |
| |
| /* |
| * struct yuv_u8_to_argb_u16_case - Reference values to test the color |
| * conversions in VKMS between YUV to ARGB |
| * |
| * @encoding: Encoding used to convert RGB to YUV |
| * @range: Range used to convert RGB to YUV |
| * @n_colors: Count of test colors in this case |
| * @format_pair.name: Name used for this color conversion, used to |
| * clarify the test results |
| * @format_pair.rgb: RGB color tested |
| * @format_pair.yuv: Same color as @format_pair.rgb, but converted to |
| * YUV using @encoding and @range. |
| */ |
| struct yuv_u8_to_argb_u16_case { |
| enum drm_color_encoding encoding; |
| enum drm_color_range range; |
| size_t n_colors; |
| struct format_pair { |
| char *name; |
| struct pixel_yuv_u8 yuv; |
| struct pixel_argb_u16 argb; |
| } colors[TEST_BUFF_SIZE]; |
| }; |
| |
| /* |
| * The YUV color representation were acquired via the colour python framework. |
| * Below are the function calls used for generating each case. |
| * |
| * For more information got to the docs: |
| * https://colour.readthedocs.io/en/master/generated/colour.RGB_to_YCbCr.html |
| */ |
| static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = { |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.601"], |
| * in_bits = 16, |
| * in_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = False, |
| * out_int = True) |
| * |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT601 full range using the ITU-R BT.601 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT601, |
| .range = DRM_COLOR_YCBCR_FULL_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x4c, 0x55, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0x96, 0x2c, 0x15 }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x1d, 0xff, 0x6b }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.601"], |
| * in_bits = 16, |
| * in_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = True, |
| * out_int = True) |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT601 limited range using the ITU-R BT.601 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT601, |
| .range = DRM_COLOR_YCBCR_LIMITED_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x51, 0x5a, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0x91, 0x36, 0x22 }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x29, 0xf0, 0x6e }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.709"], |
| * in_bits = 16, |
| * in_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = False, |
| * out_int = True) |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT709 full range using the ITU-R BT.709 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT709, |
| .range = DRM_COLOR_YCBCR_FULL_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x36, 0x63, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0xb6, 0x1e, 0x0c }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x12, 0xff, 0x74 }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.709"], |
| * in_bits = 16, |
| * int_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = True, |
| * out_int = True) |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT709 limited range using the ITU-R BT.709 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT709, |
| .range = DRM_COLOR_YCBCR_LIMITED_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x3f, 0x66, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0xad, 0x2a, 0x1a }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x20, 0xf0, 0x76 }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"], |
| * in_bits = 16, |
| * in_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = False, |
| * out_int = True) |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT2020 full range using the ITU-R BT.2020 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT2020, |
| .range = DRM_COLOR_YCBCR_FULL_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x43, 0x5c, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0xad, 0x24, 0x0b }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x0f, 0xff, 0x76 }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| /* |
| * colour.RGB_to_YCbCr(<rgb color in 16 bit form>, |
| * K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"], |
| * in_bits = 16, |
| * in_legal = False, |
| * in_int = True, |
| * out_bits = 8, |
| * out_legal = True, |
| * out_int = True) |
| * Tests cases for color conversion generated by converting RGB |
| * values to YUV BT2020 limited range using the ITU-R BT.2020 weights. |
| */ |
| { |
| .encoding = DRM_COLOR_YCBCR_BT2020, |
| .range = DRM_COLOR_YCBCR_LIMITED_RANGE, |
| .n_colors = 6, |
| .colors = { |
| { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }}, |
| { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }}, |
| { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }}, |
| { "red", { 0x4a, 0x61, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }}, |
| { "green", { 0xa4, 0x2f, 0x19 }, { 0xffff, 0x0000, 0xffff, 0x0000 }}, |
| { "blue", { 0x1d, 0xf0, 0x77 }, { 0xffff, 0x0000, 0x0000, 0xffff }}, |
| }, |
| }, |
| }; |
| |
| /* |
| * vkms_format_test_yuv_u8_to_argb_u16 - Testing the conversion between YUV |
| * colors to ARGB colors in VKMS |
| * |
| * This test will use the functions get_conversion_matrix_to_argb_u16 and |
| * argb_u16_from_yuv888 to convert YUV colors (stored in |
| * yuv_u8_to_argb_u16_cases) into ARGB colors. |
| * |
| * The conversion between YUV and RGB is not totally reversible, so there may be |
| * some difference between the expected value and the result. |
| * In addition, there may be some rounding error as the input color is 8 bits |
| * and output color is 16 bits. |
| */ |
| static void vkms_format_test_yuv_u8_to_argb_u16(struct kunit *test) |
| { |
| const struct yuv_u8_to_argb_u16_case *param = test->param_value; |
| struct pixel_argb_u16 argb; |
| |
| for (size_t i = 0; i < param->n_colors; i++) { |
| const struct format_pair *color = ¶m->colors[i]; |
| struct conversion_matrix matrix; |
| |
| get_conversion_matrix_to_argb_u16 |
| (DRM_FORMAT_NV12, param->encoding, param->range, &matrix); |
| |
| argb = argb_u16_from_yuv888(color->yuv.y, color->yuv.u, color->yuv.v, &matrix); |
| |
| KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.a, color->argb.a), 0x1ff, |
| "On the A channel of the color %s expected 0x%04x, got 0x%04x", |
| color->name, color->argb.a, argb.a); |
| KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.r, color->argb.r), 0x1ff, |
| "On the R channel of the color %s expected 0x%04x, got 0x%04x", |
| color->name, color->argb.r, argb.r); |
| KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.g, color->argb.g), 0x1ff, |
| "On the G channel of the color %s expected 0x%04x, got 0x%04x", |
| color->name, color->argb.g, argb.g); |
| KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.b, color->argb.b), 0x1ff, |
| "On the B channel of the color %s expected 0x%04x, got 0x%04x", |
| color->name, color->argb.b, argb.b); |
| } |
| } |
| |
| static void vkms_format_test_yuv_u8_to_argb_u16_case_desc(struct yuv_u8_to_argb_u16_case *t, |
| char *desc) |
| { |
| snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s - %s", |
| drm_get_color_encoding_name(t->encoding), drm_get_color_range_name(t->range)); |
| } |
| |
| KUNIT_ARRAY_PARAM(yuv_u8_to_argb_u16, yuv_u8_to_argb_u16_cases, |
| vkms_format_test_yuv_u8_to_argb_u16_case_desc |
| ); |
| |
| static struct kunit_case vkms_format_test_cases[] = { |
| KUNIT_CASE_PARAM(vkms_format_test_yuv_u8_to_argb_u16, yuv_u8_to_argb_u16_gen_params), |
| {} |
| }; |
| |
| static struct kunit_suite vkms_format_test_suite = { |
| .name = "vkms-format", |
| .test_cases = vkms_format_test_cases, |
| }; |
| |
| kunit_test_suite(vkms_format_test_suite); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("Kunit test for vkms format conversion"); |
