280 lines
11 KiB
C
280 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <kunit/test.h>
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#include <drm/drm_fixed.h>
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#include <drm/drm_fourcc.h>
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#include "../../drm_crtc_internal.h"
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#include "../vkms_formats.h"
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#define TEST_BUFF_SIZE 50
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MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
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/**
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* struct pixel_yuv_u16 - Internal representation of a pixel color.
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* @y: Luma value, stored in 16 bits, without padding, using
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* machine endianness
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* @u: Blue difference chroma value, stored in 16 bits, without padding, using
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* machine endianness
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* @v: Red difference chroma value, stored in 16 bits, without padding, using
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* machine endianness
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*/
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struct pixel_yuv_u16 {
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u16 y, u, v;
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};
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/*
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* struct yuv_u16_to_argb_u16_case - Reference values to test the color
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* conversions in VKMS between YUV to ARGB
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*
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* @encoding: Encoding used to convert RGB to YUV
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* @range: Range used to convert RGB to YUV
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* @n_colors: Count of test colors in this case
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* @format_pair.name: Name used for this color conversion, used to
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* clarify the test results
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* @format_pair.rgb: RGB color tested
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* @format_pair.yuv: Same color as @format_pair.rgb, but converted to
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* YUV using @encoding and @range.
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*/
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struct yuv_u16_to_argb_u16_case {
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enum drm_color_encoding encoding;
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enum drm_color_range range;
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size_t n_colors;
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struct format_pair {
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char *name;
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struct pixel_yuv_u16 yuv;
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struct pixel_argb_u16 argb;
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} colors[TEST_BUFF_SIZE];
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};
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/*
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* The YUV color representation were acquired via the colour python framework.
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* Below are the function calls used for generating each case.
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*
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* For more information got to the docs:
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* https://colour.readthedocs.io/en/master/generated/colour.RGB_to_YCbCr.html
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*/
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static struct yuv_u16_to_argb_u16_case yuv_u16_to_argb_u16_cases[] = {
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.601"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = False,
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* out_int = True)
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*
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT601 full range using the ITU-R BT.601 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT601,
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.range = DRM_COLOR_YCBCR_FULL_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x4c8b, 0x54ce, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0x9645, 0x2b33, 0x14d1 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x1d2f, 0xffff, 0x6b2f }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.601"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = True,
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* out_int = True)
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT601 limited range using the ITU-R BT.601 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT601,
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.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x517b, 0x5a34, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0x908e, 0x35cc, 0x2237 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x28f7, 0xf000, 0x6dc9 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.709"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = False,
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* out_int = True)
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT709 full range using the ITU-R BT.709 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT709,
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.range = DRM_COLOR_YCBCR_FULL_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x366d, 0x62ac, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0xb717, 0x1d55, 0x0bbd }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x127c, 0xffff, 0x7443 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.709"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = True,
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* out_int = True)
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT709 limited range using the ITU-R BT.709 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT709,
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.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x3e8f, 0x6656, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0xaca1, 0x29aa, 0x1a45 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x1fd0, 0xf000, 0x75bb }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = False,
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* out_int = True)
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT2020 full range using the ITU-R BT.2020 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT2020,
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.range = DRM_COLOR_YCBCR_FULL_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x4340, 0x5c41, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0xad91, 0x23bf, 0x0a4c }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x0f2e, 0xffff, 0x75b5 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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/*
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* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
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* K=colour.WEIGHTS_YCBCR["ITU-R BT.2020"],
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* in_bits = 16,
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* in_legal = False,
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* in_int = True,
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* out_bits = 16,
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* out_legal = True,
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* out_int = True)
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* Tests cases for color conversion generated by converting RGB
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* values to YUV BT2020 limited range using the ITU-R BT.2020 weights.
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*/
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{
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.encoding = DRM_COLOR_YCBCR_BT2020,
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.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
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.n_colors = 6,
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.colors = {
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{ "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
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{ "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
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{ "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
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{ "red", { 0x4988, 0x60b9, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
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{ "green", { 0xa47b, 0x2f47, 0x1902 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
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{ "blue", { 0x1cfd, 0xf000, 0x76fe }, { 0xffff, 0x0000, 0x0000, 0xffff }},
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}
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},
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};
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/*
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* vkms_format_test_yuv_u16_to_argb_u16 - Testing the conversion between YUV
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* colors to ARGB colors in VKMS
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*
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* This test will use the functions get_conversion_matrix_to_argb_u16 and
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* argb_u16_from_yuv161616 to convert YUV colors (stored in
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* yuv_u16_to_argb_u16_cases) into ARGB colors.
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*
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* The conversion between YUV and RGB is not totally reversible, so there may be
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* some difference between the expected value and the result.
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*/
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static void vkms_format_test_yuv_u16_to_argb_u16(struct kunit *test)
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{
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const struct yuv_u16_to_argb_u16_case *param = test->param_value;
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struct pixel_argb_u16 argb;
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for (size_t i = 0; i < param->n_colors; i++) {
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const struct format_pair *color = ¶m->colors[i];
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struct conversion_matrix matrix;
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get_conversion_matrix_to_argb_u16
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(DRM_FORMAT_NV12, param->encoding, param->range, &matrix);
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argb = argb_u16_from_yuv161616(&matrix, color->yuv.y, color->yuv.u,
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color->yuv.v);
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KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.a, color->argb.a), 0x1ff,
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"On the A channel of the color %s expected 0x%04x, got 0x%04x",
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color->name, color->argb.a, argb.a);
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KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.r, color->argb.r), 0x1ff,
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"On the R channel of the color %s expected 0x%04x, got 0x%04x",
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color->name, color->argb.r, argb.r);
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KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.g, color->argb.g), 0x1ff,
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"On the G channel of the color %s expected 0x%04x, got 0x%04x",
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color->name, color->argb.g, argb.g);
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KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.b, color->argb.b), 0x1ff,
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"On the B channel of the color %s expected 0x%04x, got 0x%04x",
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color->name, color->argb.b, argb.b);
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}
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}
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static void vkms_format_test_yuv_u16_to_argb_u16_case_desc(struct yuv_u16_to_argb_u16_case *t,
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char *desc)
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{
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snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s - %s",
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drm_get_color_encoding_name(t->encoding), drm_get_color_range_name(t->range));
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}
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KUNIT_ARRAY_PARAM(yuv_u16_to_argb_u16, yuv_u16_to_argb_u16_cases,
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vkms_format_test_yuv_u16_to_argb_u16_case_desc
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);
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static struct kunit_case vkms_format_test_cases[] = {
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KUNIT_CASE_PARAM(vkms_format_test_yuv_u16_to_argb_u16, yuv_u16_to_argb_u16_gen_params),
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{}
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};
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static struct kunit_suite vkms_format_test_suite = {
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.name = "vkms-format",
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.test_cases = vkms_format_test_cases,
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};
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kunit_test_suite(vkms_format_test_suite);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Kunit test for vkms format conversion");
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