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/* SPDX-License-Identifier: MIT */
/*
* Copyright 2023 Advanced Micro Devices, Inc.
*
* This file contains code adapted from Skia, which is
* distributed under a BSD-style license which can be
* found at
* https://skia.googlesource.com/skia.git/+/refs/heads/main/LICENSE
*/
#ifndef __IGT_COLOR_H__
#define __IGT_COLOR_H__
#include <limits.h>
#include "igt_fb.h"
#include "igt_kms.h"
#include "igt_color_lut.h"
#define MAX_COLOR_LUT_ENTRIES 4096
struct igt_color_tf {
float g, a, b, c, d, e, f;
};
struct igt_color_tf_pq {
float A, B, C, D, E, F, G;
};
const struct igt_color_tf srgb_eotf = {2.4f, (float)(1/1.055), (float)(0.055/1.055), (float)(1/12.92), 0.04045f, 0, 0};
const struct igt_color_tf bt2020_inv_oetf = {(float)(1/0.45f), (float)(1/1.0993f), (float)(0.0993f/1.0993f), (float)(1/4.5f), (float)(0.081), 0, 0};
const struct igt_color_tf_pq pq_eotf = {-107/128.0f, 1.0f, 32/2523.0f, 2413/128.0f, -2392/128.0f, 8192/1305.0f };
typedef struct igt_pixel {
float r;
float g;
float b;
} igt_pixel_t;
typedef struct igt_1dlut {
struct drm_color_lut32 lut[MAX_COLOR_LUT_ENTRIES];
} igt_1dlut_t;
igt_1dlut_t igt_1dlut_srgb_inv_eotf = { {
} };
igt_1dlut_t igt_1dlut_srgb_eotf = { {
} };
typedef struct igt_matrix_3x4 {
/*
* out matrix in
* |R| |0 1 2 3 | | R |
* |G| = |4 5 6 7 | x | G |
* |B| |8 9 10 11| | B |
* |1.0|
*/
float m[12];
} igt_matrix_3x4_t;
const igt_matrix_3x4_t igt_matrix_3x4_50_desat = { {
0.5, 0.25, 0.25, 0.0,
0.25, 0.5, 0.25, 0.0,
0.25, 0.25, 0.5, 0.0
} };
const igt_matrix_3x4_t igt_matrix_3x4_overdrive = { {
1.5, 0.0, 0.0, 0.0,
0.0, 1.5, 0.0, 0.0,
0.0, 0.0, 1.5, 0.0
} };
const igt_matrix_3x4_t igt_matrix_3x4_oversaturate = { {
1.5, -0.25, -0.25, 0.0,
-0.25, 1.5, -0.25, 0.0,
-0.25, -0.25, 1.5, 0.0
} };
const igt_matrix_3x4_t igt_matrix_3x4_bt709_enc = { {
0.2126, 0.7152, 0.0722, 0.0,
-0.09991, -0.33609, 0.436, 0.0,
0.615, -0.55861, -0.05639, 0.0
} };
const igt_matrix_3x4_t igt_matrix_3x4_bt709_dec = { {
1.0, 0.0, 1.28033, 0.0,
1.0, -0.21482, -0.38059, 0.0,
1.0, 2.12798, 0.0, 0.0
} };
bool igt_cmp_fb_component(uint16_t comp1, uint16_t comp2, uint8_t up, uint8_t down);
bool igt_cmp_fb_pixels(igt_fb_t *fb1, igt_fb_t *fb2, uint8_t up, uint8_t down);
void igt_dump_fb(igt_display_t *display, igt_fb_t *fb, const char *path_name, const char *file_name);
typedef void (*igt_pixel_transform)(igt_pixel_t *pixel);
int igt_color_transform_pixels(igt_fb_t *fb, igt_pixel_transform transforms[], int num_transforms);
/* colorop helpers */
void igt_colorop_set_ctm_3x4(igt_display_t *display,
igt_colorop_t *colorop,
const igt_matrix_3x4_t *matrix);
void igt_colorop_set_custom_1dlut(igt_display_t *display,
igt_colorop_t *colorop,
const igt_1dlut_t *lut1d,
const size_t lut_size);
void igt_colorop_set_3dlut(igt_display_t *display,
igt_colorop_t *colorop,
const igt_3dlut_norm_t *lut3d,
const size_t lut_size);
/* transformations */
void igt_color_srgb_inv_eotf(igt_pixel_t *pixel);
void igt_color_srgb_eotf(igt_pixel_t *pixel);
void igt_color_pq_inv_eotf(igt_pixel_t *pixel);
void igt_color_pq_eotf(igt_pixel_t *pixel);
void igt_color_pq_125_inv_eotf(igt_pixel_t *pixel);
void igt_color_pq_125_eotf(igt_pixel_t *pixel);
void igt_color_bt2020_inv_oetf(igt_pixel_t *pixel);
void igt_color_bt2020_oetf(igt_pixel_t *pixel);
void igt_color_gamma_2_2_oetf(igt_pixel_t *pixel);
void igt_color_gamma_2_2_inv_oetf(igt_pixel_t *pixel);
void igt_color_ctm_3x4_50_desat(igt_pixel_t *pixel);
void igt_color_ctm_3x4_overdrive(igt_pixel_t *pixel);
void igt_color_ctm_3x4_oversaturate(igt_pixel_t *pixel);
void igt_color_ctm_3x4_bt709_dec(igt_pixel_t *pixel);
void igt_color_ctm_3x4_bt709_enc(igt_pixel_t *pixel);
void igt_color_multiply_125(igt_pixel_t *pixel);
void igt_color_multiply_inv_125(igt_pixel_t *pixel);
void igt_color_3dlut_17_12_rgb(igt_pixel_t *pixel);
void igt_color_3dlut_17_12_bgr(igt_pixel_t *pixel);
#endif
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