| 1 |
< |
/* Copyright (c) 1997 Regents of the University of California */ |
| 2 |
< |
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 4 |
< |
|
| 1 |
> |
/* RCSid $Id$ */ |
| 2 |
|
/* |
| 3 |
|
* color.h - header for routines using pixel color values. |
| 4 |
|
* |
| 8 |
– |
* 12/31/85 |
| 9 |
– |
* |
| 5 |
|
* Two color representations are used, one for calculation and |
| 6 |
|
* another for storage. Calculation is done with three floats |
| 7 |
|
* for speed. Stored color values use 4 bytes which contain |
| 8 |
|
* three single byte mantissas and a common exponent. |
| 9 |
|
*/ |
| 10 |
+ |
#ifndef _RAD_COLOR_H_ |
| 11 |
+ |
#define _RAD_COLOR_H_ |
| 12 |
|
|
| 13 |
+ |
#include <stdio.h> |
| 14 |
+ |
#include <stdlib.h> |
| 15 |
+ |
|
| 16 |
+ |
#ifdef __cplusplus |
| 17 |
+ |
extern "C" { |
| 18 |
+ |
#endif |
| 19 |
+ |
|
| 20 |
|
#define RED 0 |
| 21 |
|
#define GRN 1 |
| 22 |
|
#define BLU 2 |
| 27 |
|
#define COLXS 128 /* excess used for exponent */ |
| 28 |
|
#define WHT 3 /* used for RGBPRIMS type */ |
| 29 |
|
|
| 30 |
< |
typedef unsigned char BYTE; /* 8-bit unsigned integer */ |
| 30 |
> |
#undef uby8 |
| 31 |
> |
#define uby8 unsigned char /* 8-bit unsigned integer */ |
| 32 |
|
|
| 33 |
< |
typedef BYTE COLR[4]; /* red, green, blue (or X,Y,Z), exponent */ |
| 33 |
> |
typedef uby8 COLR[4]; /* red, green, blue (or X,Y,Z), exponent */ |
| 34 |
|
|
| 35 |
< |
typedef float COLOR[3]; /* red, green, blue (or X,Y,Z) */ |
| 35 |
> |
typedef float COLORV; |
| 36 |
> |
typedef COLORV COLOR[3]; /* red, green, blue (or X,Y,Z) */ |
| 37 |
|
|
| 38 |
|
typedef float RGBPRIMS[4][2]; /* (x,y) chromaticities for RGBW */ |
| 39 |
|
typedef float (*RGBPRIMP)[2]; /* pointer to RGBPRIMS array */ |
| 75 |
|
#define CIE_y_w 0.3333 |
| 76 |
|
#endif |
| 77 |
|
|
| 78 |
< |
#define STDPRIMS {CIE_x_r,CIE_y_r,CIE_x_g,CIE_y_g, \ |
| 79 |
< |
CIE_x_b,CIE_y_b,CIE_x_w,CIE_y_w} |
| 78 |
> |
#define STDPRIMS {{CIE_x_r,CIE_y_r},{CIE_x_g,CIE_y_g}, \ |
| 79 |
> |
{CIE_x_b,CIE_y_b},{CIE_x_w,CIE_y_w}} |
| 80 |
|
|
| 81 |
|
#define CIE_D ( CIE_x_r*(CIE_y_g - CIE_y_b) + \ |
| 82 |
|
CIE_x_g*(CIE_y_b - CIE_y_r) + \ |
| 113 |
|
#define D65EFFICACY 203. /* standard illuminant D65 */ |
| 114 |
|
#define INCEFFICACY 160. /* illuminant A (incand.) */ |
| 115 |
|
#define SUNEFFICACY 208. /* illuminant B (solar dir.) */ |
| 116 |
< |
#define SKYEFFICACY D65EFFICACY /* skylight */ |
| 116 |
> |
#define SKYEFFICACY D65EFFICACY /* skylight (should be 110) */ |
| 117 |
|
#define DAYEFFICACY D65EFFICACY /* combined sky and solar */ |
| 118 |
|
|
| 119 |
|
#define luminance(col) (WHTEFFICACY * bright(col)) |
| 157 |
|
#define PRIMARYSTR "PRIMARIES=" |
| 158 |
|
#define LPRIMARYSTR 10 |
| 159 |
|
#define isprims(hl) (!strncmp(hl,PRIMARYSTR,LPRIMARYSTR)) |
| 160 |
< |
#define primsval(p,hl) sscanf(hl+LPRIMARYSTR, \ |
| 160 |
> |
#define primsval(p,hl) (sscanf((hl)+LPRIMARYSTR, \ |
| 161 |
|
"%f %f %f %f %f %f %f %f", \ |
| 162 |
|
&(p)[RED][CIEX],&(p)[RED][CIEY], \ |
| 163 |
|
&(p)[GRN][CIEX],&(p)[GRN][CIEY], \ |
| 164 |
|
&(p)[BLU][CIEX],&(p)[BLU][CIEY], \ |
| 165 |
< |
&(p)[WHT][CIEX],&(p)[WHT][CIEY]) |
| 165 |
> |
&(p)[WHT][CIEX],&(p)[WHT][CIEY]) == 8) |
| 166 |
|
#define fputprims(p,fp) fprintf(fp, \ |
| 167 |
|
"%s %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n",\ |
| 168 |
|
PRIMARYSTR, \ |
| 175 |
|
#define COLCORSTR "COLORCORR=" |
| 176 |
|
#define LCOLCORSTR 10 |
| 177 |
|
#define iscolcor(hl) (!strncmp(hl,COLCORSTR,LCOLCORSTR)) |
| 178 |
< |
#define colcorval(cc,hl) sscanf(hl+LCOLCORSTR,"%f %f %f", \ |
| 178 |
> |
#define colcorval(cc,hl) sscanf((hl)+LCOLCORSTR,"%f %f %f", \ |
| 179 |
|
&(cc)[RED],&(cc)[GRN],&(cc)[BLU]) |
| 180 |
|
#define fputcolcor(cc,fp) fprintf(fp,"%s %f %f %f\n",COLCORSTR, \ |
| 181 |
|
(cc)[RED],(cc)[GRN],(cc)[BLU]) |
| 182 |
|
|
| 177 |
– |
#ifdef DCL_ATOF |
| 178 |
– |
extern double atof(), ldexp(), frexp(); |
| 179 |
– |
#endif |
| 180 |
– |
|
| 183 |
|
/* |
| 184 |
|
* Conversions to and from XYZ space generally don't apply WHTEFFICACY. |
| 185 |
|
* If you need Y to be luminance (cd/m^2), this must be applied when |
| 186 |
|
* converting from radiance (watts/sr/m^2). |
| 187 |
|
*/ |
| 188 |
|
|
| 189 |
< |
extern RGBPRIMS stdprims; /* standard primary chromaticities */ |
| 190 |
< |
extern COLORMAT rgb2xyzmat; /* RGB to XYZ conversion matrix */ |
| 191 |
< |
extern COLORMAT xyz2rgbmat; /* XYZ to RGB conversion matrix */ |
| 189 |
> |
extern RGBPRIMS stdprims; /* standard primary chromaticities */ |
| 190 |
> |
extern COLORMAT rgb2xyzmat; /* RGB to XYZ conversion matrix */ |
| 191 |
> |
extern COLORMAT xyz2rgbmat; /* XYZ to RGB conversion matrix */ |
| 192 |
> |
extern COLOR cblack, cwhite; /* black (0,0,0) and white (1,1,1) */ |
| 193 |
|
|
| 194 |
< |
#define cie_rgb(rgb,xyz) colortrans(rgb,xyz2rgbmat,xyz,1) |
| 195 |
< |
#define rgb_cie(xyz,rgb) colortrans(xyz,rgb2xyzmat,rgb,1) |
| 194 |
> |
#define CGAMUT_LOWER 01 |
| 195 |
> |
#define CGAMUT_UPPER 02 |
| 196 |
> |
#define CGAMUT (CGAMUT_LOWER|CGAMUT_UPPER) |
| 197 |
|
|
| 198 |
< |
#ifdef BSD |
| 199 |
< |
#define cpcolormat(md,ms) bcopy((char *)ms,(char *)md,sizeof(COLORMAT)) |
| 200 |
< |
#else |
| 201 |
< |
extern char *memcpy(); |
| 202 |
< |
#define cpcolormat(md,ms) (void)memcpy((char *)md,(char *)ms,sizeof(COLORMAT)) |
| 198 |
> |
#define rgb_cie(xyz,rgb) colortrans(xyz,rgb2xyzmat,rgb) |
| 199 |
> |
|
| 200 |
> |
#define cpcolormat(md,ms) memcpy((void *)md,(void *)ms,sizeof(COLORMAT)) |
| 201 |
> |
|
| 202 |
> |
/* defined in color.c */ |
| 203 |
> |
extern char *tempbuffer(unsigned int len); |
| 204 |
> |
extern int fwritecolrs(COLR *scanline, int len, FILE *fp); |
| 205 |
> |
extern int freadcolrs(COLR *scanline, int len, FILE *fp); |
| 206 |
> |
extern int fwritescan(COLOR *scanline, int len, FILE *fp); |
| 207 |
> |
extern int freadscan(COLOR *scanline, int len, FILE *fp); |
| 208 |
> |
extern void setcolr(COLR clr, double r, double g, double b); |
| 209 |
> |
extern void colr_color(COLOR col, COLR clr); |
| 210 |
> |
extern int bigdiff(COLOR c1, COLOR c2, double md); |
| 211 |
> |
/* defined in spec_rgb.c */ |
| 212 |
> |
extern void spec_rgb(COLOR col, int s, int e); |
| 213 |
> |
extern void spec_cie(COLOR col, int s, int e); |
| 214 |
> |
extern void cie_rgb(COLOR rgb, COLOR xyz); |
| 215 |
> |
extern int clipgamut(COLOR col, double brt, int gamut, |
| 216 |
> |
COLOR lower, COLOR upper); |
| 217 |
> |
extern void colortrans(COLOR c2, COLORMAT mat, COLOR c1); |
| 218 |
> |
extern void multcolormat(COLORMAT m3, COLORMAT m2, |
| 219 |
> |
COLORMAT m1); |
| 220 |
> |
extern int colorprimsOK(RGBPRIMS pr); |
| 221 |
> |
extern int compxyz2rgbmat(COLORMAT mat, RGBPRIMS pr); |
| 222 |
> |
extern int comprgb2xyzmat(COLORMAT mat, RGBPRIMS pr); |
| 223 |
> |
extern int comprgb2rgbmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2); |
| 224 |
> |
extern int compxyzWBmat(COLORMAT mat, float wht1[2], |
| 225 |
> |
float wht2[2]); |
| 226 |
> |
extern int compxyz2rgbWBmat(COLORMAT mat, RGBPRIMS pr); |
| 227 |
> |
extern int comprgb2xyzWBmat(COLORMAT mat, RGBPRIMS pr); |
| 228 |
> |
extern int comprgb2rgbWBmat(COLORMAT mat, RGBPRIMS pr1, RGBPRIMS pr2); |
| 229 |
> |
/* defined in colrops.c */ |
| 230 |
> |
extern int setcolrcor(double (*f)(double, double), double a2); |
| 231 |
> |
extern int setcolrinv(double (*f)(double, double), double a2); |
| 232 |
> |
extern int setcolrgam(double g); |
| 233 |
> |
extern int colrs_gambs(COLR *scan, int len); |
| 234 |
> |
extern int gambs_colrs(COLR *scan, int len); |
| 235 |
> |
extern void shiftcolrs(COLR *scan, int len, int adjust); |
| 236 |
> |
extern void normcolrs(COLR *scan, int len, int adjust); |
| 237 |
> |
|
| 238 |
> |
|
| 239 |
> |
#ifdef __cplusplus |
| 240 |
> |
} |
| 241 |
|
#endif |
| 242 |
+ |
#endif /* _RAD_COLOR_H_ */ |
| 243 |
+ |
|
