1 /* 2 * Copyright 2016 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #ifndef COLOR_MOD_COLOR_GAMMA_H_ 27 #define COLOR_MOD_COLOR_GAMMA_H_ 28 29 struct dc_transfer_func; 30 struct dc_gamma; 31 struct dc_transfer_func_distributed_points; 32 struct dc_rgb_fixed; 33 enum dc_transfer_func_predefined; 34 35 /* For SetRegamma ADL interface support 36 * Must match escape type 37 */ 38 union regamma_flags { 39 unsigned int raw; 40 struct { 41 unsigned int gammaRampArray :1; // RegammaRamp is in use 42 unsigned int gammaFromEdid :1; //gamma from edid is in use 43 unsigned int gammaFromEdidEx :1; //gamma from edid is in use , but only for Display Id 1.2 44 unsigned int gammaFromUser :1; //user custom gamma is used 45 unsigned int coeffFromUser :1; //coeff. A0-A3 from user is in use 46 unsigned int coeffFromEdid :1; //coeff. A0-A3 from edid is in use 47 unsigned int applyDegamma :1; //flag for additional degamma correction in driver 48 unsigned int gammaPredefinedSRGB :1; //flag for SRGB gamma 49 unsigned int gammaPredefinedPQ :1; //flag for PQ gamma 50 unsigned int gammaPredefinedPQ2084Interim :1; //flag for PQ gamma, lower max nits 51 unsigned int gammaPredefined36 :1; //flag for 3.6 gamma 52 unsigned int gammaPredefinedReset :1; //flag to return to previous gamma 53 } bits; 54 }; 55 56 struct regamma_ramp { 57 unsigned short gamma[256*3]; // gamma ramp packed in same way as OS windows ,r , g & b 58 }; 59 60 struct regamma_coeff { 61 int gamma[3]; 62 int A0[3]; 63 int A1[3]; 64 int A2[3]; 65 int A3[3]; 66 }; 67 68 struct regamma_lut { 69 union regamma_flags flags; 70 union { 71 struct regamma_ramp ramp; 72 struct regamma_coeff coeff; 73 }; 74 }; 75 76 void setup_x_points_distribution(void); 77 void precompute_pq(void); 78 void precompute_de_pq(void); 79 80 bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf, 81 const struct dc_gamma *ramp, bool mapUserRamp); 82 83 bool mod_color_calculate_degamma_params(struct dc_transfer_func *output_tf, 84 const struct dc_gamma *ramp, bool mapUserRamp); 85 86 bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans, 87 struct dc_transfer_func_distributed_points *points); 88 89 bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans, 90 struct dc_transfer_func_distributed_points *points); 91 92 bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf, 93 const struct regamma_lut *regamma); 94 95 bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf, 96 const struct regamma_lut *regamma); 97 98 99 #endif /* COLOR_MOD_COLOR_GAMMA_H_ */ 100