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/*
* Copyright 2016 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#ifndef COLOR_MOD_COLOR_GAMMA_H_
#define COLOR_MOD_COLOR_GAMMA_H_
struct dc_transfer_func;
struct dc_gamma;
struct dc_transfer_func_distributed_points;
struct dc_rgb_fixed;
enum dc_transfer_func_predefined;
/* For SetRegamma ADL interface support
* Must match escape type
*/
union regamma_flags {
unsigned int raw;
struct {
unsigned int gammaRampArray :1; // RegammaRamp is in use
unsigned int gammaFromEdid :1; //gamma from edid is in use
unsigned int gammaFromEdidEx :1; //gamma from edid is in use , but only for Display Id 1.2
unsigned int gammaFromUser :1; //user custom gamma is used
unsigned int coeffFromUser :1; //coeff. A0-A3 from user is in use
unsigned int coeffFromEdid :1; //coeff. A0-A3 from edid is in use
unsigned int applyDegamma :1; //flag for additional degamma correction in driver
unsigned int gammaPredefinedSRGB :1; //flag for SRGB gamma
unsigned int gammaPredefinedPQ :1; //flag for PQ gamma
unsigned int gammaPredefinedPQ2084Interim :1; //flag for PQ gamma, lower max nits
unsigned int gammaPredefined36 :1; //flag for 3.6 gamma
unsigned int gammaPredefinedReset :1; //flag to return to previous gamma
} bits;
};
struct regamma_ramp {
unsigned short gamma[256*3]; // gamma ramp packed in same way as OS windows ,r , g & b
};
struct regamma_coeff {
int gamma[3];
int A0[3];
int A1[3];
int A2[3];
int A3[3];
};
struct regamma_lut {
union regamma_flags flags;
union {
struct regamma_ramp ramp;
struct regamma_coeff coeff;
};
};
struct freesync_hdr_tf_params {
unsigned int sdr_white_level;
unsigned int min_content; // luminance in 1/10000 nits
unsigned int max_content; // luminance in nits
unsigned int min_display; // luminance in 1/10000 nits
unsigned int max_display; // luminance in nits
};
void setup_x_points_distribution(void);
void precompute_pq(void);
void precompute_de_pq(void);
bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
const struct dc_gamma *ramp, bool mapUserRamp, bool canRomBeUsed,
const struct freesync_hdr_tf_params *fs_params);
bool mod_color_calculate_degamma_params(struct dc_transfer_func *output_tf,
const struct dc_gamma *ramp, bool mapUserRamp);
bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
struct dc_transfer_func_distributed_points *points,
uint32_t sdr_ref_white_level);
bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
struct dc_transfer_func_distributed_points *points);
bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf,
const struct regamma_lut *regamma);
bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf,
const struct regamma_lut *regamma);
#endif /* COLOR_MOD_COLOR_GAMMA_H_ */
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