/*
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* Copyright 2016 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef COLOR_MOD_COLOR_GAMMA_H_
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#define COLOR_MOD_COLOR_GAMMA_H_
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#include "color_table.h"
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struct dc_transfer_func;
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struct dc_gamma;
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struct dc_transfer_func_distributed_points;
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struct dc_rgb_fixed;
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struct dc_color_caps;
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enum dc_transfer_func_predefined;
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/* For SetRegamma ADL interface support
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* Must match escape type
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*/
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union regamma_flags {
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unsigned int raw;
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struct {
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unsigned int gammaRampArray :1; // RegammaRamp is in use
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unsigned int gammaFromEdid :1; //gamma from edid is in use
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unsigned int gammaFromEdidEx :1; //gamma from edid is in use , but only for Display Id 1.2
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unsigned int gammaFromUser :1; //user custom gamma is used
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unsigned int coeffFromUser :1; //coeff. A0-A3 from user is in use
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unsigned int coeffFromEdid :1; //coeff. A0-A3 from edid is in use
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unsigned int applyDegamma :1; //flag for additional degamma correction in driver
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unsigned int gammaPredefinedSRGB :1; //flag for SRGB gamma
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unsigned int gammaPredefinedPQ :1; //flag for PQ gamma
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unsigned int gammaPredefinedPQ2084Interim :1; //flag for PQ gamma, lower max nits
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unsigned int gammaPredefined36 :1; //flag for 3.6 gamma
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unsigned int gammaPredefinedReset :1; //flag to return to previous gamma
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} bits;
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};
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struct regamma_ramp {
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unsigned short gamma[256*3]; // gamma ramp packed in same way as OS windows ,r , g & b
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};
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struct regamma_coeff {
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int gamma[3];
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int A0[3];
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int A1[3];
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int A2[3];
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int A3[3];
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};
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struct regamma_lut {
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union regamma_flags flags;
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union {
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struct regamma_ramp ramp;
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struct regamma_coeff coeff;
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};
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};
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struct freesync_hdr_tf_params {
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unsigned int sdr_white_level;
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unsigned int min_content; // luminance in 1/10000 nits
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unsigned int max_content; // luminance in nits
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unsigned int min_display; // luminance in 1/10000 nits
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unsigned int max_display; // luminance in nits
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unsigned int skip_tm; // skip tm
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};
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struct calculate_buffer {
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int buffer_index;
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struct fixed31_32 buffer[NUM_PTS_IN_REGION];
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struct fixed31_32 gamma_of_2;
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};
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struct translate_from_linear_space_args {
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struct fixed31_32 arg;
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struct fixed31_32 a0;
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struct fixed31_32 a1;
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struct fixed31_32 a2;
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struct fixed31_32 a3;
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struct fixed31_32 gamma;
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struct calculate_buffer *cal_buffer;
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};
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void setup_x_points_distribution(void);
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void log_x_points_distribution(struct dal_logger *logger);
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void precompute_pq(void);
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void precompute_de_pq(void);
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bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
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const struct dc_gamma *ramp, bool mapUserRamp, bool canRomBeUsed,
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const struct freesync_hdr_tf_params *fs_params,
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struct calculate_buffer *cal_buffer);
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bool mod_color_calculate_degamma_params(struct dc_color_caps *dc_caps,
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struct dc_transfer_func *output_tf,
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const struct dc_gamma *ramp, bool mapUserRamp);
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bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
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struct dc_transfer_func_distributed_points *points);
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bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf,
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const struct regamma_lut *regamma,
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struct calculate_buffer *cal_buffer);
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bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf,
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const struct regamma_lut *regamma,
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struct calculate_buffer *cal_buffer);
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#endif /* COLOR_MOD_COLOR_GAMMA_H_ */
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