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26 #ifndef COLOR_MOD_COLOR_GAMMA_H_
27 #define COLOR_MOD_COLOR_GAMMA_H_
29 struct dc_transfer_func;
31 struct dc_transfer_func_distributed_points;
33 enum dc_transfer_func_predefined;
35 /* For SetRegamma ADL interface support
36 * Must match escape type
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
57 unsigned short gamma[256*3]; // gamma ramp packed in same way as OS windows ,r , g & b
60 struct regamma_coeff {
69 union regamma_flags flags;
71 struct regamma_ramp ramp;
72 struct regamma_coeff coeff;
76 void setup_x_points_distribution(void);
77 void precompute_pq(void);
78 void precompute_de_pq(void);
80 bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
81 const struct dc_gamma *ramp, bool mapUserRamp);
83 bool mod_color_calculate_degamma_params(struct dc_transfer_func *output_tf,
84 const struct dc_gamma *ramp, bool mapUserRamp);
86 bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
87 struct dc_transfer_func_distributed_points *points);
89 bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
90 struct dc_transfer_func_distributed_points *points);
92 bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf,
93 const struct regamma_lut *regamma);
95 bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf,
96 const struct regamma_lut *regamma);
99 #endif /* COLOR_MOD_COLOR_GAMMA_H_ */