| 1 |
greg |
2.38 |
/* RCSid $Id: color.h,v 2.X in progress $ */ |
| 2 |
greg |
1.1 |
/* |
| 3 |
greg |
2.38 |
* color.h - header for routines using pixel color and spectral values |
| 4 |
greg |
1.1 |
* |
| 5 |
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* Two color representations are used, one for calculation and |
| 6 |
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* another for storage. Calculation is done with three floats |
| 7 |
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* for speed. Stored color values use 4 bytes which contain |
| 8 |
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* three single byte mantissas and a common exponent. |
| 9 |
greg |
2.38 |
* |
| 10 |
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* Spectral colors have between 3 and MAXCSAMP samples, and cover |
| 11 |
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* wavelengths from WLPART[0] to WLPART[3] (max to min nanometers). |
| 12 |
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* Wavelengths WLPART[1] and WLPART[2] mark the separation |
| 13 |
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* of red/green and green/blue intervals, respectively. |
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* The wavelength range may go well beyond visible in either |
| 15 |
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* direction, but some routines will average over each interval |
| 16 |
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* and designate the means as R, G, and B, regardless. |
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* The number of samples is set in CNDX[3], and CNDX[0,1,2] |
| 18 |
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* give peak wavelength indices corresponding to stdprims. |
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* For best accuracy, internal calculations are promoted to |
| 20 |
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* the current number of samples and final conversions |
| 21 |
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* to tristimulus should use scolor_rgb() or scolor_cie(). |
| 22 |
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* |
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* A new Radiance format is provided for spectral pictures, |
| 24 |
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* and spectral colors must be converted by caller using |
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* convertscolor() if the sampling doesn't match. |
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greg |
1.1 |
*/ |
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schorsch |
2.21 |
#ifndef _RAD_COLOR_H_ |
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#define _RAD_COLOR_H_ |
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schorsch |
2.25 |
|
| 30 |
greg |
2.33 |
#include <stdio.h> |
| 31 |
schorsch |
2.25 |
#include <stdlib.h> |
| 32 |
greg |
2.38 |
#include <string.h> |
| 33 |
schorsch |
2.25 |
|
| 34 |
schorsch |
2.21 |
#ifdef __cplusplus |
| 35 |
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extern "C" { |
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#endif |
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greg |
2.18 |
|
| 38 |
greg |
2.38 |
#ifndef MAXCSAMP |
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#define MAXCSAMP 24 /* maximum # spectral samples */ |
| 40 |
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#endif |
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greg |
1.1 |
#define RED 0 |
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#define GRN 1 |
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#define BLU 2 |
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greg |
2.10 |
#define CIEX 0 /* or, if input is XYZ... */ |
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#define CIEY 1 |
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#define CIEZ 2 |
| 48 |
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#define EXP 3 /* exponent same for either format */ |
| 49 |
greg |
1.1 |
#define COLXS 128 /* excess used for exponent */ |
| 50 |
greg |
2.10 |
#define WHT 3 /* used for RGBPRIMS type */ |
| 51 |
greg |
1.1 |
|
| 52 |
greg |
2.31 |
#undef uby8 |
| 53 |
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#define uby8 unsigned char /* 8-bit unsigned integer */ |
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greg |
1.1 |
|
| 55 |
greg |
2.31 |
typedef uby8 COLR[4]; /* red, green, blue (or X,Y,Z), exponent */ |
| 56 |
greg |
2.38 |
typedef uby8 SCOLR[MAXCSAMP+1]; /* spectral color, common exponent */ |
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greg |
1.1 |
|
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schorsch |
2.28 |
typedef float COLORV; |
| 59 |
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typedef COLORV COLOR[3]; /* red, green, blue (or X,Y,Z) */ |
| 60 |
greg |
2.38 |
typedef COLORV SCOLOR[MAXCSAMP]; /* spectral color */ |
| 61 |
greg |
2.10 |
|
| 62 |
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typedef float RGBPRIMS[4][2]; /* (x,y) chromaticities for RGBW */ |
| 63 |
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typedef float (*RGBPRIMP)[2]; /* pointer to RGBPRIMS array */ |
| 64 |
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| 65 |
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typedef float COLORMAT[3][3]; /* color coordinate conversion matrix */ |
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greg |
1.1 |
#define copycolr(c1,c2) (c1[0]=c2[0],c1[1]=c2[1], \ |
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c1[2]=c2[2],c1[3]=c2[3]) |
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greg |
2.38 |
#define colval(col,pri) (col)[pri] |
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greg |
1.1 |
|
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#define setcolor(col,r,g,b) ((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b)) |
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greg |
2.38 |
#define scalecolor(col,sf) ((col)[0]*=(sf),(col)[1]*=(sf),(col)[2]*=(sf)) |
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#define opcolor(c1,op,c2) ((c1)[0]op(c2)[0],(c1)[1]op(c2)[1],(c1)[2]op(c2)[2]) |
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#define copycolor(c1,c2) opcolor(c1,=,c2) |
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#define addcolor(c1,c2) opcolor(c1,+=,c2) |
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#define multcolor(c1,c2) opcolor(c1,*=,c2) |
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#define NCSAMP CNDX[EXP] /* current number of spectral samples */ |
| 85 |
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#define LSCOLR (NCSAMP+1) |
| 86 |
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| 87 |
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#define copyscolr(sc1,sc2) memcpy(sc1,sc2,LSCOLR) |
| 88 |
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| 89 |
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#define scolval(sc,pri) (sc)[CNDX[pri]] |
| 90 |
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| 91 |
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#define copyscolor(sc1,sc2) memcpy(sc1,sc2,sizeof(COLORV)*NCSAMP) |
| 92 |
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| 93 |
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#define scalescolor(sc,sf) {const float _f=sf; int _i=NCSAMP; \ |
| 94 |
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while (_i--) (sc)[_i] *= _f;} |
| 95 |
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| 96 |
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/* faster, use principal colors for RGB */ |
| 97 |
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#define pcolor_color(col,scol) setcolor(col,scolval(scol,RED),\ |
| 98 |
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scolval(scol,GRN),scolval(scol,BLU)) |
| 99 |
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#define pcolor_colr(clr,scol) setcolr(clr,scolval(scol,RED),\ |
| 100 |
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scolval(scol,GRN),scolval(scol,BLU)) |
| 101 |
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| 102 |
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#define sopscolor(sc1,op,sc2) {int _i=NCSAMP; while (_i--) (sc1)[_i] op (sc2)[_i];} |
| 103 |
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| 104 |
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#define saddscolor(sc1,sc2) sopscolor(sc1,+=,sc2) |
| 105 |
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| 106 |
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#define smultscolor(sc1,sc2) sopscolor(sc1,*=,sc2) |
| 107 |
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| 108 |
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#define scolrblack(c) memset(c,0,LSCOLR) |
| 109 |
greg |
1.1 |
|
| 110 |
greg |
2.38 |
#define scolorblack(c) memset(c,0,sizeof(COLORV)*MAXCSAMP) |
| 111 |
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| 112 |
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#define scolor_color(col,scol) scolor2color(col,scol,NCSAMP,WLPART) |
| 113 |
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#define scolor_colr(clr,scol) scolor2colr(clr,scol,NCSAMP,WLPART) |
| 114 |
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#define scolor_scolr(sclr,scol) scolor2scolr(sclr,scol,NCSAMP) |
| 115 |
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#define scolr_scolor(scol,sclr) scolr2scolor(scol,sclr,NCSAMP) |
| 116 |
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#define scolr_color(col,sclr) scolr2color(col,sclr,NCSAMP,WLPART) |
| 117 |
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| 118 |
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#define sopcolor(sc1,op,c2) {SCOLOR _sct;\ |
| 119 |
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setscolor(_sct,c2[RED],c2[GRN],c2[BLU]);\ |
| 120 |
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sopscolor(sc1,op,_sct);} |
| 121 |
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| 122 |
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#define saddcolor(sc1,c2) sopcolor(sc1,+=,c2) |
| 123 |
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| 124 |
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#define smultcolor(sc1,c2) sopcolor(sc1,*=,c2) |
| 125 |
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| 126 |
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#define opscolor(c1,op,sc2) {COLOR _ct; scolor_color(_ct,sc2);\ |
| 127 |
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opcolor(c1,op,_ct);} |
| 128 |
greg |
1.1 |
|
| 129 |
greg |
2.38 |
#define addscolor(c1,sc2) opscolor(c1,+=,sc2) |
| 130 |
greg |
1.1 |
|
| 131 |
greg |
2.38 |
#define multscolor(c1,sc2) opscolor(c1,*=,sc2) |
| 132 |
greg |
1.1 |
|
| 133 |
greg |
2.35 |
#if defined(NTSC_RGB) |
| 134 |
greg |
2.7 |
#define CIE_x_r 0.670 /* standard NTSC primaries */ |
| 135 |
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#define CIE_y_r 0.330 |
| 136 |
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#define CIE_x_g 0.210 |
| 137 |
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#define CIE_y_g 0.710 |
| 138 |
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#define CIE_x_b 0.140 |
| 139 |
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#define CIE_y_b 0.080 |
| 140 |
greg |
2.35 |
#define CIE_x_w (1./3.) /* use EE white */ |
| 141 |
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#define CIE_y_w (1./3.) |
| 142 |
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#elif defined(SHARP_RGB) |
| 143 |
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#define CIE_x_r 0.6898 /* "sharp" RGB primaries */ |
| 144 |
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#define CIE_y_r 0.3206 |
| 145 |
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#define CIE_x_g 0.0736 |
| 146 |
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#define CIE_y_g 0.9003 |
| 147 |
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#define CIE_x_b 0.1166 |
| 148 |
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#define CIE_y_b 0.0374 |
| 149 |
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#define CIE_x_w (1./3.) /* use EE white */ |
| 150 |
greg |
2.34 |
#define CIE_y_w (1./3.) |
| 151 |
greg |
1.7 |
#else |
| 152 |
greg |
2.7 |
#define CIE_x_r 0.640 /* nominal CRT primaries */ |
| 153 |
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#define CIE_y_r 0.330 |
| 154 |
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#define CIE_x_g 0.290 |
| 155 |
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#define CIE_y_g 0.600 |
| 156 |
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#define CIE_x_b 0.150 |
| 157 |
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#define CIE_y_b 0.060 |
| 158 |
greg |
2.35 |
#define CIE_x_w (1./3.) /* use EE white */ |
| 159 |
greg |
2.34 |
#define CIE_y_w (1./3.) |
| 160 |
greg |
1.7 |
#endif |
| 161 |
greg |
2.7 |
|
| 162 |
greg |
2.14 |
#define STDPRIMS {{CIE_x_r,CIE_y_r},{CIE_x_g,CIE_y_g}, \ |
| 163 |
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{CIE_x_b,CIE_y_b},{CIE_x_w,CIE_y_w}} |
| 164 |
greg |
2.10 |
|
| 165 |
greg |
2.7 |
#define CIE_D ( CIE_x_r*(CIE_y_g - CIE_y_b) + \ |
| 166 |
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CIE_x_g*(CIE_y_b - CIE_y_r) + \ |
| 167 |
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CIE_x_b*(CIE_y_r - CIE_y_g) ) |
| 168 |
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#define CIE_C_rD ( (1./CIE_y_w) * \ |
| 169 |
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( CIE_x_w*(CIE_y_g - CIE_y_b) - \ |
| 170 |
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CIE_y_w*(CIE_x_g - CIE_x_b) + \ |
| 171 |
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CIE_x_g*CIE_y_b - CIE_x_b*CIE_y_g ) ) |
| 172 |
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#define CIE_C_gD ( (1./CIE_y_w) * \ |
| 173 |
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( CIE_x_w*(CIE_y_b - CIE_y_r) - \ |
| 174 |
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CIE_y_w*(CIE_x_b - CIE_x_r) - \ |
| 175 |
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CIE_x_r*CIE_y_b + CIE_x_b*CIE_y_r ) ) |
| 176 |
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#define CIE_C_bD ( (1./CIE_y_w) * \ |
| 177 |
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( CIE_x_w*(CIE_y_r - CIE_y_g) - \ |
| 178 |
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CIE_y_w*(CIE_x_r - CIE_x_g) + \ |
| 179 |
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CIE_x_r*CIE_y_g - CIE_x_g*CIE_y_r ) ) |
| 180 |
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| 181 |
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#define CIE_rf (CIE_y_r*CIE_C_rD/CIE_D) |
| 182 |
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#define CIE_gf (CIE_y_g*CIE_C_gD/CIE_D) |
| 183 |
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#define CIE_bf (CIE_y_b*CIE_C_bD/CIE_D) |
| 184 |
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| 185 |
greg |
2.35 |
/* Default CIE_rf=.265074126, CIE_gf=.670114631 and CIE_bf=.064811243 */ |
| 186 |
greg |
2.9 |
|
| 187 |
greg |
2.38 |
/***** The following definitions are not for XYZ colors *****/ |
| 188 |
greg |
2.10 |
|
| 189 |
greg |
2.7 |
#define bright(col) (CIE_rf*(col)[RED]+CIE_gf*(col)[GRN]+CIE_bf*(col)[BLU]) |
| 190 |
greg |
2.38 |
#define pbright(col) (CIE_rf*scolval(col,RED) + CIE_gf*scolval(col,GRN) + \ |
| 191 |
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CIE_bf*scolval(col,BLU)) |
| 192 |
greg |
2.7 |
#define normbright(c) ( ( (long)(CIE_rf*256.+.5)*(c)[RED] + \ |
| 193 |
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(long)(CIE_gf*256.+.5)*(c)[GRN] + \ |
| 194 |
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(long)(CIE_bf*256.+.5)*(c)[BLU] ) >> 8 ) |
| 195 |
greg |
2.38 |
#define normpbright(c) ( ( (long)(CIE_rf*256.+.5)*(c)[CNDX[RED]] + \ |
| 196 |
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(long)(CIE_gf*256.+.5)*(c)[CNDX[GRN]] + \ |
| 197 |
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(long)(CIE_bf*256.+.5)*(c)[CNDX[BLU]] ) >> 8 ) |
| 198 |
greg |
1.1 |
|
| 199 |
greg |
1.14 |
/* luminous efficacies over visible spectrum */ |
| 200 |
|
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#define MAXEFFICACY 683. /* defined maximum at 550 nm */ |
| 201 |
greg |
2.38 |
#define WHTEFFICACY 179. /* equal energy white 380-780nm */ |
| 202 |
greg |
1.14 |
#define D65EFFICACY 203. /* standard illuminant D65 */ |
| 203 |
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#define INCEFFICACY 160. /* illuminant A (incand.) */ |
| 204 |
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#define SUNEFFICACY 208. /* illuminant B (solar dir.) */ |
| 205 |
greg |
2.27 |
#define SKYEFFICACY D65EFFICACY /* skylight (should be 110) */ |
| 206 |
greg |
1.14 |
#define DAYEFFICACY D65EFFICACY /* combined sky and solar */ |
| 207 |
greg |
2.38 |
#define WHTSCOTOPIC 412. /* scotopic EE white 380-780nm */ |
| 208 |
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#define WHTMELANOPIC 179. /* melanopic EE white 380-780nm */ |
| 209 |
greg |
1.14 |
|
| 210 |
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#define luminance(col) (WHTEFFICACY * bright(col)) |
| 211 |
greg |
2.38 |
#define pluminance(scol) (WHTEFFICACY * pbright(scol)) |
| 212 |
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| 213 |
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#define scolor_rgb(col,scol) scolor2rgb(col,scol,NCSAMP,WLPART) |
| 214 |
greg |
1.9 |
|
| 215 |
greg |
2.10 |
/***** ...end of stuff specific to RGB colors *****/ |
| 216 |
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| 217 |
greg |
2.38 |
#define scolor_cie(col,scol) scolor2cie(col,scol,NCSAMP,WLPART) |
| 218 |
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| 219 |
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#define sluminance(scol) (WHTEFFICACY * scolor_photopic(scol)) |
| 220 |
|
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| 221 |
greg |
1.1 |
#define intens(col) ( (col)[0] > (col)[1] \ |
| 222 |
|
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? (col)[0] > (col)[2] ? (col)[0] : (col)[2] \ |
| 223 |
|
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: (col)[1] > (col)[2] ? (col)[1] : (col)[2] ) |
| 224 |
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|
| 225 |
greg |
1.3 |
#define colrval(c,p) ( (c)[EXP] ? \ |
| 226 |
|
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ldexp((c)[p]+.5,(int)(c)[EXP]-(COLXS+8)) : \ |
| 227 |
|
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0. ) |
| 228 |
|
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|
| 229 |
greg |
2.38 |
#define scolrval(c,p) ( (c)[CNDX[EXP]] ? \ |
| 230 |
|
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ldexp((c)[CNDX[p]]+.5,(int)(c)[CNDX[EXP]]-(COLXS+8)) : \ |
| 231 |
|
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0. ) |
| 232 |
|
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|
| 233 |
greg |
1.1 |
#define WHTCOLOR {1.0,1.0,1.0} |
| 234 |
|
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#define BLKCOLOR {0.0,0.0,0.0} |
| 235 |
|
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#define WHTCOLR {128,128,128,COLXS+1} |
| 236 |
|
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#define BLKCOLR {0,0,0,0} |
| 237 |
greg |
1.3 |
|
| 238 |
greg |
1.11 |
/* picture format identifier */ |
| 239 |
|
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#define COLRFMT "32-bit_rle_rgbe" |
| 240 |
greg |
2.10 |
#define CIEFMT "32-bit_rle_xyze" |
| 241 |
|
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#define PICFMT "32-bit_rle_???e" /* matches either */ |
| 242 |
greg |
2.38 |
#define SPECFMT "Radiance_rle_spectra" /* spectral data w/ exponent */ |
| 243 |
|
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#define LPICFMT 21 /* max format id len */ |
| 244 |
|
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| 245 |
|
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/* Number of spectral components */ |
| 246 |
|
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#define NCOMPSTR "NCOMP=" |
| 247 |
|
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#define LNCOMPSTR 6 |
| 248 |
|
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#define isncomp(hl) (!strncmp(hl,NCOMPSTR,LNCOMPSTR)) |
| 249 |
|
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#define ncompval(hl) atoi((hl)+LNCOMPSTR) |
| 250 |
|
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#define fputncomp(nc,fp) fprintf(fp,"%s%d\n",NCOMPSTR,nc) |
| 251 |
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|
| 252 |
|
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/* 4 wavelength partitions for (IR+)R,G,B(+UV) */ |
| 253 |
|
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#define WLSPLTSTR "WAVELENGTH_SPLITS=" |
| 254 |
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#define LWLSPLTSTR 18 |
| 255 |
|
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#define iswlsplit(hl) (!strncmp(hl,WLSPLTSTR,LWLSPLTSTR)) |
| 256 |
|
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#define wlsplitval(w,hl) (sscanf((hl)+LWLSPLTSTR,"%f %f %f %f",\ |
| 257 |
|
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&(w)[0],&(w)[1],&(w)[2],&(w)[3]) == 4) |
| 258 |
|
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#define fputwlsplit(w,fp) fprintf(fp,"%s %f %f %f %f\n",WLSPLTSTR,\ |
| 259 |
|
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(w)[0],(w)[1],(w)[2],(w)[3]) |
| 260 |
greg |
1.11 |
|
| 261 |
greg |
1.6 |
/* macros for exposures */ |
| 262 |
greg |
1.5 |
#define EXPOSSTR "EXPOSURE=" |
| 263 |
greg |
1.12 |
#define LEXPOSSTR 9 |
| 264 |
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#define isexpos(hl) (!strncmp(hl,EXPOSSTR,LEXPOSSTR)) |
| 265 |
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#define exposval(hl) atof((hl)+LEXPOSSTR) |
| 266 |
greg |
2.37 |
#define fputexpos(ex,fp) fprintf(fp,"%s%.4e\n",EXPOSSTR,ex) |
| 267 |
greg |
1.6 |
|
| 268 |
|
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/* macros for pixel aspect ratios */ |
| 269 |
|
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#define ASPECTSTR "PIXASPECT=" |
| 270 |
greg |
1.12 |
#define LASPECTSTR 10 |
| 271 |
|
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#define isaspect(hl) (!strncmp(hl,ASPECTSTR,LASPECTSTR)) |
| 272 |
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#define aspectval(hl) atof((hl)+LASPECTSTR) |
| 273 |
greg |
1.6 |
#define fputaspect(pa,fp) fprintf(fp,"%s%f\n",ASPECTSTR,pa) |
| 274 |
greg |
1.5 |
|
| 275 |
greg |
2.10 |
/* macros for primary specifications */ |
| 276 |
|
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#define PRIMARYSTR "PRIMARIES=" |
| 277 |
|
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#define LPRIMARYSTR 10 |
| 278 |
|
|
#define isprims(hl) (!strncmp(hl,PRIMARYSTR,LPRIMARYSTR)) |
| 279 |
greg |
2.32 |
#define primsval(p,hl) (sscanf((hl)+LPRIMARYSTR, \ |
| 280 |
greg |
2.10 |
"%f %f %f %f %f %f %f %f", \ |
| 281 |
|
|
&(p)[RED][CIEX],&(p)[RED][CIEY], \ |
| 282 |
|
|
&(p)[GRN][CIEX],&(p)[GRN][CIEY], \ |
| 283 |
|
|
&(p)[BLU][CIEX],&(p)[BLU][CIEY], \ |
| 284 |
greg |
2.32 |
&(p)[WHT][CIEX],&(p)[WHT][CIEY]) == 8) |
| 285 |
greg |
2.10 |
#define fputprims(p,fp) fprintf(fp, \ |
| 286 |
|
|
"%s %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n",\ |
| 287 |
|
|
PRIMARYSTR, \ |
| 288 |
|
|
(p)[RED][CIEX],(p)[RED][CIEY], \ |
| 289 |
|
|
(p)[GRN][CIEX],(p)[GRN][CIEY], \ |
| 290 |
|
|
(p)[BLU][CIEX],(p)[BLU][CIEY], \ |
| 291 |
|
|
(p)[WHT][CIEX],(p)[WHT][CIEY]) |
| 292 |
|
|
|
| 293 |
greg |
1.8 |
/* macros for color correction */ |
| 294 |
|
|
#define COLCORSTR "COLORCORR=" |
| 295 |
greg |
1.12 |
#define LCOLCORSTR 10 |
| 296 |
|
|
#define iscolcor(hl) (!strncmp(hl,COLCORSTR,LCOLCORSTR)) |
| 297 |
greg |
2.30 |
#define colcorval(cc,hl) sscanf((hl)+LCOLCORSTR,"%f %f %f", \ |
| 298 |
greg |
1.8 |
&(cc)[RED],&(cc)[GRN],&(cc)[BLU]) |
| 299 |
|
|
#define fputcolcor(cc,fp) fprintf(fp,"%s %f %f %f\n",COLCORSTR, \ |
| 300 |
|
|
(cc)[RED],(cc)[GRN],(cc)[BLU]) |
| 301 |
greg |
2.6 |
|
| 302 |
greg |
2.10 |
/* |
| 303 |
|
|
* Conversions to and from XYZ space generally don't apply WHTEFFICACY. |
| 304 |
|
|
* If you need Y to be luminance (cd/m^2), this must be applied when |
| 305 |
|
|
* converting from radiance (watts/sr/m^2). |
| 306 |
|
|
*/ |
| 307 |
|
|
|
| 308 |
greg |
2.38 |
extern int CNDX[4]; /* RGBE indices for SCOLOR, SCOLR */ |
| 309 |
|
|
extern float WLPART[4]; /* RGB wavelength limits+partitions (nm) */ |
| 310 |
greg |
2.18 |
extern RGBPRIMS stdprims; /* standard primary chromaticities */ |
| 311 |
greg |
2.38 |
extern RGBPRIMS xyzprims; /* to indicate XYZ input or output */ |
| 312 |
greg |
2.18 |
extern COLORMAT rgb2xyzmat; /* RGB to XYZ conversion matrix */ |
| 313 |
|
|
extern COLORMAT xyz2rgbmat; /* XYZ to RGB conversion matrix */ |
| 314 |
|
|
extern COLOR cblack, cwhite; /* black (0,0,0) and white (1,1,1) */ |
| 315 |
greg |
2.10 |
|
| 316 |
greg |
2.13 |
#define CGAMUT_LOWER 01 |
| 317 |
|
|
#define CGAMUT_UPPER 02 |
| 318 |
|
|
#define CGAMUT (CGAMUT_LOWER|CGAMUT_UPPER) |
| 319 |
|
|
|
| 320 |
|
|
#define rgb_cie(xyz,rgb) colortrans(xyz,rgb2xyzmat,rgb) |
| 321 |
greg |
2.10 |
|
| 322 |
greg |
2.20 |
#define cpcolormat(md,ms) memcpy((void *)md,(void *)ms,sizeof(COLORMAT)) |
| 323 |
greg |
2.18 |
|
| 324 |
|
|
/* defined in color.c */ |
| 325 |
greg |
2.38 |
extern void *tempbuffer(size_t len); |
| 326 |
|
|
/* in cn[3]=nsamps, wlpt[0],wlpt[3]=extrema */ |
| 327 |
|
|
extern int setspectrsamp(int cn[4], float wlpt[4]); |
| 328 |
greg |
2.18 |
extern int fwritecolrs(COLR *scanline, int len, FILE *fp); |
| 329 |
greg |
2.38 |
extern int fwritescan(COLOR *scanline, int len, FILE *fp); |
| 330 |
|
|
extern int fwritescolrs(uby8 *sscanline, int len, FILE *fp); |
| 331 |
|
|
extern int fwritesscan(COLORV *sscanline, int len, FILE *fp); |
| 332 |
greg |
2.18 |
extern int freadcolrs(COLR *scanline, int len, FILE *fp); |
| 333 |
|
|
extern int freadscan(COLOR *scanline, int len, FILE *fp); |
| 334 |
greg |
2.38 |
extern int freadscolrs(uby8 *scanline, int nc, int len, FILE *fp); |
| 335 |
|
|
extern int freadsscan(COLORV *sscanline, int nc, int len, FILE *fp); |
| 336 |
|
|
/* spectrum conversion, zero-fill past ends */ |
| 337 |
|
|
extern void convertscolor(SCOLOR dst, int dnc, double dwl0, double dwl1, |
| 338 |
|
|
const COLORV src[], int snc, double swl0, double swl1); |
| 339 |
|
|
/* the following use avg spectral ranges */ |
| 340 |
|
|
/* compare scolor_rgb() and scolor_cie() */ |
| 341 |
|
|
/* also, pcolor_color() and pcolor_colr() */ |
| 342 |
|
|
extern void setscolor(SCOLOR scol, double r, double g, double b); |
| 343 |
|
|
extern void scolor2color(COLOR col, SCOLOR scol, int ncs, float wlpt[4]); |
| 344 |
|
|
extern void scolor2colr(COLR clr, SCOLOR scol, int ncs, float wlpt[4]); |
| 345 |
|
|
extern void scolor2scolr(SCOLR sclr, SCOLOR scol, int ncs); |
| 346 |
|
|
extern void colr_color(COLOR col, COLR clr); |
| 347 |
|
|
extern void scolr2scolor(SCOLOR scol, SCOLR sclr, int ncs); |
| 348 |
|
|
extern void scolr2color(COLOR col, SCOLR sclr, int ncs, float wlpt[4]); |
| 349 |
|
|
extern void colr_scolor(SCOLOR scol, COLR clr); |
| 350 |
greg |
2.18 |
extern void setcolr(COLR clr, double r, double g, double b); |
| 351 |
greg |
2.38 |
extern void setscolr(SCOLR sclr, double r, double g, double b); |
| 352 |
|
|
extern double scolor_mean(SCOLOR scol); |
| 353 |
|
|
extern double sintens(SCOLOR scol); |
| 354 |
greg |
2.18 |
extern int bigdiff(COLOR c1, COLOR c2, double md); |
| 355 |
greg |
2.38 |
extern int sbigsdiff(SCOLOR sc1, SCOLOR sc2, double md); |
| 356 |
greg |
2.18 |
/* defined in spec_rgb.c */ |
| 357 |
greg |
2.38 |
extern void spec_cie(COLOR col, int s, int e); |
| 358 |
greg |
2.18 |
extern void spec_rgb(COLOR col, int s, int e); |
| 359 |
|
|
extern void cie_rgb(COLOR rgb, COLOR xyz); |
| 360 |
|
|
extern int clipgamut(COLOR col, double brt, int gamut, |
| 361 |
|
|
COLOR lower, COLOR upper); |
| 362 |
|
|
extern void colortrans(COLOR c2, COLORMAT mat, COLOR c1); |
| 363 |
|
|
extern void multcolormat(COLORMAT m3, COLORMAT m2, |
| 364 |
|
|
COLORMAT m1); |
| 365 |
greg |
2.29 |
extern int colorprimsOK(RGBPRIMS pr); |
| 366 |
|
|
extern int compxyz2rgbmat(COLORMAT mat, RGBPRIMS pr); |
| 367 |
|
|
extern int comprgb2xyzmat(COLORMAT mat, RGBPRIMS pr); |
| 368 |
|
|
extern int comprgb2rgbmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2); |
| 369 |
|
|
extern int compxyzWBmat(COLORMAT mat, float wht1[2], |
| 370 |
greg |
2.18 |
float wht2[2]); |
| 371 |
greg |
2.29 |
extern int compxyz2rgbWBmat(COLORMAT mat, RGBPRIMS pr); |
| 372 |
|
|
extern int comprgb2xyzWBmat(COLORMAT mat, RGBPRIMS pr); |
| 373 |
|
|
extern int comprgb2rgbWBmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2); |
| 374 |
greg |
2.38 |
/* most accurate spectral->tristim */ |
| 375 |
|
|
extern void scolor2cie(COLOR col, SCOLOR scol, int ncs, float wlpt[4]); |
| 376 |
|
|
extern void scolor2rgb(COLOR col, SCOLOR scol, int ncs, float wlpt[4]); |
| 377 |
|
|
extern double scolor_photopic(SCOLOR scol); |
| 378 |
|
|
extern double scolor_scotopic(SCOLOR scol); |
| 379 |
|
|
extern double scolor_melanopic(SCOLOR scol); |
| 380 |
greg |
2.18 |
/* defined in colrops.c */ |
| 381 |
schorsch |
2.26 |
extern int setcolrcor(double (*f)(double, double), double a2); |
| 382 |
|
|
extern int setcolrinv(double (*f)(double, double), double a2); |
| 383 |
greg |
2.18 |
extern int setcolrgam(double g); |
| 384 |
|
|
extern int colrs_gambs(COLR *scan, int len); |
| 385 |
|
|
extern int gambs_colrs(COLR *scan, int len); |
| 386 |
|
|
extern void shiftcolrs(COLR *scan, int len, int adjust); |
| 387 |
|
|
extern void normcolrs(COLR *scan, int len, int adjust); |
| 388 |
|
|
|
| 389 |
|
|
#ifdef __cplusplus |
| 390 |
|
|
} |
| 391 |
greg |
2.6 |
#endif |
| 392 |
schorsch |
2.21 |
#endif /* _RAD_COLOR_H_ */ |
| 393 |
|
|
|
