/** * Copyright © 2016 Mattias Andrée * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #ifndef LIBCOLOUR_H #define LIBCOLOUR_H #include #define LIBCOLOUR_ILLUMINANT__(x__, y__) (libcolour_ciexyy_t){.model = LIBCOLOUR_CIEXYY, .x = x__, .y = y__, .Y = 1} #define LIBCOLOUR_ILLUMINANT_A LIBCOLOUR_ILLUMINANT__(0.447573514098910552050369915378, 0.407439444306660847328060981454) #define LIBCOLOUR_ILLUMINANT_B LIBCOLOUR_ILLUMINANT__(0.348407693041403399014654951316, 0.351617234807268863594487129376) #define LIBCOLOUR_ILLUMINANT_C LIBCOLOUR_ILLUMINANT__(0.310058473730255412803558101587, 0.316149707523236456196968902077) #define LIBCOLOUR_ILLUMINANT_D50 LIBCOLOUR_ILLUMINANT__(0.345668037029273123028616510055, 0.358496838937619077825047497754) #define LIBCOLOUR_ILLUMINANT_D55 LIBCOLOUR_ILLUMINANT__(0.332424102468830251488896010414, 0.347428039087666229445261478759) #define LIBCOLOUR_ILLUMINANT_D65 LIBCOLOUR_ILLUMINANT__(0.312726871026564878786047074755, 0.329023206641284038376227272238) #define LIBCOLOUR_ILLUMINANT_D75 LIBCOLOUR_ILLUMINANT__(0.299022300412497055166483050925, 0.314852737888341893679466920730) #define LIBCOLOUR_ILLUMINANT_E LIBCOLOUR_ILLUMINANT__(1. / 3, 1. / 3) #define LIBCOLOUR_ILLUMINANT_F1 LIBCOLOUR_ILLUMINANT__(0.313062433035651010992950205036, 0.337106477918307445573731229160) #define LIBCOLOUR_ILLUMINANT_F2 LIBCOLOUR_ILLUMINANT__(0.372068154452825539113547392844, 0.375122558203110079144693145281) #define LIBCOLOUR_ILLUMINANT_F3 LIBCOLOUR_ILLUMINANT__(0.409090035308107391465171076561, 0.394117134255365986206243178458) #define LIBCOLOUR_ILLUMINANT_F4 LIBCOLOUR_ILLUMINANT__(0.440181095827666568620628595454, 0.403090691158138336724903183494) #define LIBCOLOUR_ILLUMINANT_F5 LIBCOLOUR_ILLUMINANT__(0.313756583095696484075887155996, 0.345160794752101929283583103825) #define LIBCOLOUR_ILLUMINANT_F6 LIBCOLOUR_ILLUMINANT__(0.377882361062687466279896852939, 0.388192885537868959122675960316) #define LIBCOLOUR_ILLUMINANT_F7 LIBCOLOUR_ILLUMINANT__(0.312852472915475354753311876266, 0.329174178033567632617462095368) #define LIBCOLOUR_ILLUMINANT_F8 LIBCOLOUR_ILLUMINANT__(0.345805753550315952971061506105, 0.358617583214377477762724311106) #define LIBCOLOUR_ILLUMINANT_F9 LIBCOLOUR_ILLUMINANT__(0.374105245592801061160770359493, 0.372672400924498159469067104510) #define LIBCOLOUR_ILLUMINANT_F10 LIBCOLOUR_ILLUMINANT__(0.346086913993929323751785886998, 0.358751605952200347537939251197) #define LIBCOLOUR_ILLUMINANT_F11 LIBCOLOUR_ILLUMINANT__(0.380537485483030235577928124258, 0.376915309293930078649026427229) #define LIBCOLOUR_ILLUMINANT_F12 LIBCOLOUR_ILLUMINANT__(0.437023901312296902954557253906, 0.404214327891585678553809657387) #define LIBCOLOUR_ILLUMINANT_A_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.451173939693730152722395132514, 0.405936604212625562482230634487) #define LIBCOLOUR_ILLUMINANT_B_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.349819801494100579564161535018, 0.352687989927865819250740742063) #define LIBCOLOUR_ILLUMINANT_C_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.310388663270034004248998371622, 0.319050711366790695766582075521) #define LIBCOLOUR_ILLUMINANT_D50_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.347729429961154856698613002663, 0.359522508516545380441442603114) #define LIBCOLOUR_ILLUMINANT_D55_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.334116336430253457745465084372, 0.348766090975953568786849245953) #define LIBCOLOUR_ILLUMINANT_D65_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.313823646938709621689866935412, 0.330998985489933561510156323493) #define LIBCOLOUR_ILLUMINANT_D75_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.299679971345752860223399238748, 0.317403239854836705102769656150) #define LIBCOLOUR_ILLUMINANT_E_10DEG_OBS LIBCOLOUR_ILLUMINANT__(1. / 3, 1. / 3) #define LIBCOLOUR_ILLUMINANT_F1_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.318098801070991199502202562144, 0.335489451474129951602520804954) #define LIBCOLOUR_ILLUMINANT_F2_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.379274832262508854174853922814, 0.367227934400669309145115448700) #define LIBCOLOUR_ILLUMINANT_F3_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.417644682102624287267644831445, 0.383124504918675723441623404142) #define LIBCOLOUR_ILLUMINANT_F4_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.449247699162001246087072559021, 0.390605475879083674506375700730) #define LIBCOLOUR_ILLUMINANT_F5_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.319739939104951298443069163113, 0.342367055369128092667807550242) #define LIBCOLOUR_ILLUMINANT_F6_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.386626908526034762658696308790, 0.378372201588893453116924092683) #define LIBCOLOUR_ILLUMINANT_F7_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.315645637312390425766039925293, 0.329508145132134222521358424274) #define LIBCOLOUR_ILLUMINANT_F8_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.348965563721531868424108324689, 0.359317299140994528272585739614) #define LIBCOLOUR_ILLUMINANT_F9_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.378258900384649654480284652891, 0.370371375730762564248976786985) #define LIBCOLOUR_ILLUMINANT_F10_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.350893389986753234666139178444, 0.354302210111646531665030579461) #define LIBCOLOUR_ILLUMINANT_F11_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.385435391037903751776383387551, 0.371094786781121399599214782938) #define LIBCOLOUR_ILLUMINANT_F12_10DEG_OBS LIBCOLOUR_ILLUMINANT__(0.442654456042513022584472537346, 0.397060737666593277506166259627) #define LIBCOLOUR_LIST_MODELS\ X(LIBCOLOUR_RGB, libcolour_rgb_t)\ X(LIBCOLOUR_SRGB, libcolour_srgb_t)\ X(LIBCOLOUR_CIEXYY, libcolour_ciexyy_t)\ X(LIBCOLOUR_CIEXYZ, libcolour_ciexyz_t)\ X(LIBCOLOUR_CIELAB, libcolour_cielab_t)\ X(LIBCOLOUR_CIELUV, libcolour_cieluv_t)\ X(LIBCOLOUR_CIELCHUV, libcolour_cielchuv_t)\ X(LIBCOLOUR_YIQ, libcolour_yiq_t)\ X(LIBCOLOUR_YDBDR, libcolour_ydbdr_t)\ X(LIBCOLOUR_YUV, libcolour_yuv_t)\ X(LIBCOLOUR_YPBPR, libcolour_ypbpr_t)\ X(LIBCOLOUR_YCGCO, libcolour_ycgco_t)\ X(LIBCOLOUR_CIE1960UCS, libcolour_cie1960ucs_t)\ X(LIBCOLOUR_CIEUVW, libcolour_cieuvw_t) typedef enum libcolour_model { #define X(C, T) C, LIBCOLOUR_LIST_MODELS #undef X } libcolour_model_t; typedef enum libcolour_encoding_type { LIBCOLOUR_ENCODING_TYPE_LINEAR, LIBCOLOUR_ENCODING_TYPE_SIMPLE, LIBCOLOUR_ENCODING_TYPE_REGULAR, LIBCOLOUR_ENCODING_TYPE_CUSTOM } libcolour_encoding_type; typedef enum libcolour_rgb_colour_space { LIBCOLOUR_RGB_COLOUR_SPACE_CUSTOM_FROM_MEASUREMENTS, LIBCOLOUR_RGB_COLOUR_SPACE_CUSTOM_FROM_MATRIX, LIBCOLOUR_RGB_COLOUR_SPACE_CUSTOM_FROM_INV_MATRIX, LIBCOLOUR_RGB_COLOUR_SPACE_SRGB, LIBCOLOUR_RGB_COLOUR_SPACE_ADOBE_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_APPLE_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_BEST_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_BETA_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_BRUCE_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_CIE_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_COLORMATCH_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_DCI_P3_D65, LIBCOLOUR_RGB_COLOUR_SPACE_DCI_P3_THEATER, LIBCOLOUR_RGB_COLOUR_SPACE_DON_RGB_4, LIBCOLOUR_RGB_COLOUR_SPACE_ECI_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_ECI_RGB_V2, LIBCOLOUR_RGB_COLOUR_SPACE_EKTA_SPACE_PS5, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_601_625_LINE, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_601_525_LINE, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_709, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2020, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_EOTF_PQ, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_OOTF_PQ, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_OETF_PQ, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_EOTF_HLG, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_OOTF_HLG, LIBCOLOUR_RGB_COLOUR_SPACE_ITU_R_BT_2100_OETF_HLG, LIBCOLOUR_RGB_COLOUR_SPACE_LIGHTROOM_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_NTSC_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_PAL_SECAM_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_PROPHOTO_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_SGI_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_SMPTE_240M_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_SMPTE_C_RGB, LIBCOLOUR_RGB_COLOUR_SPACE_WIDE_GAMUT_RGB } libcolour_rgb_colour_space_t; typedef struct libcolour_srgb { enum libcolour_model model; double R; double G; double B; int with_gamma; } libcolour_srgb_t; typedef struct libcolour_ciexyy { enum libcolour_model model; double x; double y; double Y; } libcolour_ciexyy_t; typedef struct libcolour_ciexyz { enum libcolour_model model; double X; double Y; double Z; } libcolour_ciexyz_t; typedef struct libcolour_cielab { enum libcolour_model model; double L; double a; double b; } libcolour_cielab_t; typedef struct libcolour_yiq { enum libcolour_model model; double Y; double I; double Q; } libcolour_yiq_t; typedef struct libcolour_ydbdr { enum libcolour_model model; double Y; double Db; double Dr; } libcolour_ydbdr_t; typedef struct libcolour_yuv { enum libcolour_model model; double Y; double U; double V; } libcolour_yuv_t; typedef struct libcolour_ypbpr { enum libcolour_model model; double Y; double Pb; double Pr; } libcolour_ypbpr_t; typedef struct libcolour_ycgco { enum libcolour_model model; double Y; double Cg; double Co; } libcolour_ycgco_t; typedef struct libcolour_cie1960ucs { enum libcolour_model model; double u; double v; double Y; } libcolour_cie1960ucs_t; typedef struct libcolour_cieuvw { enum libcolour_model model; double U; double V; double W; double u0; double v0; } libcolour_cieuvw_t; typedef struct libcolour_cieluv { enum libcolour_model model; double L; double u; double v; struct libcolour_ciexyz white; } libcolour_cieluv_t; typedef struct libcolour_cielchuv { enum libcolour_model model; double L; double C; double h; struct libcolour_ciexyz white; } libcolour_cielchuv_t; typedef struct libcolour_rgb { enum libcolour_model model; double R; double G; double B; int with_gamma; enum libcolour_encoding_type encoding_type; double gamma; double offset; double slope; double transition; double transitioninv; double (*to_encoded_red)(double); double (*to_decoded_red)(double); double (*to_encoded_green)(double); double (*to_decoded_green)(double); double (*to_encoded_blue)(double); double (*to_decoded_blue)(double); struct libcolour_ciexyy red; struct libcolour_ciexyy green; struct libcolour_ciexyy blue; struct libcolour_ciexyy white; double white_r; double white_g; double white_b; double M[3][3]; double Minv[3][3]; enum libcolour_rgb_colour_space colour_space; } libcolour_rgb_t; typedef union libcolour_colour { enum libcolour_model model; struct libcolour_rgb rgb; struct libcolour_srgb srgb; struct libcolour_ciexyy ciexyy; struct libcolour_ciexyz ciexyz; struct libcolour_cielab cielab; struct libcolour_cieluv cieluv; struct libcolour_cielchuv cielchuv; struct libcolour_yiq yiq; struct libcolour_ydbdr ydbdr; struct libcolour_yuv yuv; struct libcolour_ypbpr ypbpr; struct libcolour_ycgco ycgco; struct libcolour_cie1960ucs cie1960ucs; struct libcolour_cieuvw cieuvw; } libcolour_colour_t; int libcolour_convert(const libcolour_colour_t* restrict from, libcolour_colour_t* restrict to); double libcolour_srgb_encode(double); double libcolour_srgb_decode(double); int libcolour_delta_e(const libcolour_colour_t*, const libcolour_colour_t*, double*); int libcolour_proper(libcolour_colour_t*); int libcolour_get_rgb_colour_space(libcolour_rgb_t*, libcolour_rgb_colour_space_t); size_t libcolour_marshal(const libcolour_colour_t*, void*); size_t libcolour_unmarshal(libcolour_colour_t*, const void*); #endif