| 1 |
< |
/* Copyright (c) 1986 Regents of the University of California */ |
| 1 |
> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 2 |
|
|
| 3 |
< |
/* SCCSid "$SunId$ LBL" */ |
| 3 |
> |
/* SCCSid "$SunId$ SGI" */ |
| 4 |
|
|
| 5 |
|
/* |
| 6 |
|
* color.h - header for routines using pixel color values. |
| 7 |
|
* |
| 8 |
< |
* 12/31/85 |
| 8 |
> |
* Must be included after X11 headers, since they declare a BYTE type. |
| 9 |
|
* |
| 10 |
|
* Two color representations are used, one for calculation and |
| 11 |
|
* another for storage. Calculation is done with three floats |
| 16 |
|
#define RED 0 |
| 17 |
|
#define GRN 1 |
| 18 |
|
#define BLU 2 |
| 19 |
< |
#define EXP 3 |
| 19 |
> |
#define CIEX 0 /* or, if input is XYZ... */ |
| 20 |
> |
#define CIEY 1 |
| 21 |
> |
#define CIEZ 2 |
| 22 |
> |
#define EXP 3 /* exponent same for either format */ |
| 23 |
|
#define COLXS 128 /* excess used for exponent */ |
| 24 |
+ |
#define WHT 3 /* used for RGBPRIMS type */ |
| 25 |
|
|
| 26 |
< |
typedef unsigned char BYTE; /* 8-bit unsigned integer */ |
| 26 |
> |
#undef BYTE |
| 27 |
> |
#define BYTE unsigned char /* 8-bit unsigned integer */ |
| 28 |
|
|
| 29 |
< |
typedef BYTE COLR[4]; /* red, green, blue, exponent */ |
| 29 |
> |
typedef BYTE COLR[4]; /* red, green, blue (or X,Y,Z), exponent */ |
| 30 |
|
|
| 31 |
+ |
typedef float COLOR[3]; /* red, green, blue (or X,Y,Z) */ |
| 32 |
+ |
|
| 33 |
+ |
typedef float RGBPRIMS[4][2]; /* (x,y) chromaticities for RGBW */ |
| 34 |
+ |
typedef float (*RGBPRIMP)[2]; /* pointer to RGBPRIMS array */ |
| 35 |
+ |
|
| 36 |
+ |
typedef float COLORMAT[3][3]; /* color coordinate conversion matrix */ |
| 37 |
+ |
|
| 38 |
|
#define copycolr(c1,c2) (c1[0]=c2[0],c1[1]=c2[1], \ |
| 39 |
|
c1[2]=c2[2],c1[3]=c2[3]) |
| 40 |
|
|
| 29 |
– |
typedef float COLOR[3]; /* red, green, blue */ |
| 30 |
– |
|
| 41 |
|
#define colval(col,pri) ((col)[pri]) |
| 42 |
|
|
| 43 |
|
#define setcolor(col,r,g,b) ((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b)) |
| 51 |
|
#define multcolor(c1,c2) ((c1)[0]*=(c2)[0],(c1)[1]*=(c2)[1],(c1)[2]*=(c2)[2]) |
| 52 |
|
|
| 53 |
|
#ifdef NTSC |
| 54 |
< |
#define bright(col) (.295*(col)[RED]+.636*(col)[GRN]+.070*(col)[BLU]) |
| 55 |
< |
#define normbright(c) (int)((74L*(c)[RED]+164L*(c)[GRN]+18L*(c)[BLU])/256) |
| 54 |
> |
#define CIE_x_r 0.670 /* standard NTSC primaries */ |
| 55 |
> |
#define CIE_y_r 0.330 |
| 56 |
> |
#define CIE_x_g 0.210 |
| 57 |
> |
#define CIE_y_g 0.710 |
| 58 |
> |
#define CIE_x_b 0.140 |
| 59 |
> |
#define CIE_y_b 0.080 |
| 60 |
> |
#define CIE_x_w 0.3333 /* use true white */ |
| 61 |
> |
#define CIE_y_w 0.3333 |
| 62 |
|
#else |
| 63 |
< |
#define bright(col) (.263*(col)[RED]+.655*(col)[GRN]+.082*(col)[BLU]) |
| 64 |
< |
#define normbright(c) (int)((67L*(c)[RED]+168L*(c)[GRN]+21L*(c)[BLU])/256) |
| 63 |
> |
#define CIE_x_r 0.640 /* nominal CRT primaries */ |
| 64 |
> |
#define CIE_y_r 0.330 |
| 65 |
> |
#define CIE_x_g 0.290 |
| 66 |
> |
#define CIE_y_g 0.600 |
| 67 |
> |
#define CIE_x_b 0.150 |
| 68 |
> |
#define CIE_y_b 0.060 |
| 69 |
> |
#define CIE_x_w 0.3333 /* use true white */ |
| 70 |
> |
#define CIE_y_w 0.3333 |
| 71 |
|
#endif |
| 72 |
|
|
| 73 |
+ |
#define STDPRIMS {{CIE_x_r,CIE_y_r},{CIE_x_g,CIE_y_g}, \ |
| 74 |
+ |
{CIE_x_b,CIE_y_b},{CIE_x_w,CIE_y_w}} |
| 75 |
+ |
|
| 76 |
+ |
#define CIE_D ( CIE_x_r*(CIE_y_g - CIE_y_b) + \ |
| 77 |
+ |
CIE_x_g*(CIE_y_b - CIE_y_r) + \ |
| 78 |
+ |
CIE_x_b*(CIE_y_r - CIE_y_g) ) |
| 79 |
+ |
#define CIE_C_rD ( (1./CIE_y_w) * \ |
| 80 |
+ |
( CIE_x_w*(CIE_y_g - CIE_y_b) - \ |
| 81 |
+ |
CIE_y_w*(CIE_x_g - CIE_x_b) + \ |
| 82 |
+ |
CIE_x_g*CIE_y_b - CIE_x_b*CIE_y_g ) ) |
| 83 |
+ |
#define CIE_C_gD ( (1./CIE_y_w) * \ |
| 84 |
+ |
( CIE_x_w*(CIE_y_b - CIE_y_r) - \ |
| 85 |
+ |
CIE_y_w*(CIE_x_b - CIE_x_r) - \ |
| 86 |
+ |
CIE_x_r*CIE_y_b + CIE_x_b*CIE_y_r ) ) |
| 87 |
+ |
#define CIE_C_bD ( (1./CIE_y_w) * \ |
| 88 |
+ |
( CIE_x_w*(CIE_y_r - CIE_y_g) - \ |
| 89 |
+ |
CIE_y_w*(CIE_x_r - CIE_x_g) + \ |
| 90 |
+ |
CIE_x_r*CIE_y_g - CIE_x_g*CIE_y_r ) ) |
| 91 |
+ |
|
| 92 |
+ |
#define CIE_rf (CIE_y_r*CIE_C_rD/CIE_D) |
| 93 |
+ |
#define CIE_gf (CIE_y_g*CIE_C_gD/CIE_D) |
| 94 |
+ |
#define CIE_bf (CIE_y_b*CIE_C_bD/CIE_D) |
| 95 |
+ |
|
| 96 |
+ |
/* As of 9-94, CIE_rf=.265074126, CIE_gf=.670114631 and CIE_bf=.064811243 */ |
| 97 |
+ |
|
| 98 |
+ |
/***** The following definitions are valid for RGB colors only... *****/ |
| 99 |
+ |
|
| 100 |
+ |
#define bright(col) (CIE_rf*(col)[RED]+CIE_gf*(col)[GRN]+CIE_bf*(col)[BLU]) |
| 101 |
+ |
#define normbright(c) ( ( (long)(CIE_rf*256.+.5)*(c)[RED] + \ |
| 102 |
+ |
(long)(CIE_gf*256.+.5)*(c)[GRN] + \ |
| 103 |
+ |
(long)(CIE_bf*256.+.5)*(c)[BLU] ) >> 8 ) |
| 104 |
+ |
|
| 105 |
+ |
/* luminous efficacies over visible spectrum */ |
| 106 |
+ |
#define MAXEFFICACY 683. /* defined maximum at 550 nm */ |
| 107 |
+ |
#define WHTEFFICACY 179. /* uniform white light */ |
| 108 |
+ |
#define D65EFFICACY 203. /* standard illuminant D65 */ |
| 109 |
+ |
#define INCEFFICACY 160. /* illuminant A (incand.) */ |
| 110 |
+ |
#define SUNEFFICACY 208. /* illuminant B (solar dir.) */ |
| 111 |
+ |
#define SKYEFFICACY D65EFFICACY /* skylight */ |
| 112 |
+ |
#define DAYEFFICACY D65EFFICACY /* combined sky and solar */ |
| 113 |
+ |
|
| 114 |
+ |
#define luminance(col) (WHTEFFICACY * bright(col)) |
| 115 |
+ |
|
| 116 |
+ |
/***** ...end of stuff specific to RGB colors *****/ |
| 117 |
+ |
|
| 118 |
|
#define intens(col) ( (col)[0] > (col)[1] \ |
| 119 |
|
? (col)[0] > (col)[2] ? (col)[0] : (col)[2] \ |
| 120 |
|
: (col)[1] > (col)[2] ? (col)[1] : (col)[2] ) |
| 128 |
|
#define WHTCOLR {128,128,128,COLXS+1} |
| 129 |
|
#define BLKCOLR {0,0,0,0} |
| 130 |
|
|
| 131 |
< |
/* definitions for resolution header */ |
| 132 |
< |
#define XDECR 1 |
| 133 |
< |
#define YDECR 2 |
| 134 |
< |
#define YMAJOR 4 |
| 131 |
> |
/* picture format identifier */ |
| 132 |
> |
#define COLRFMT "32-bit_rle_rgbe" |
| 133 |
> |
#define CIEFMT "32-bit_rle_xyze" |
| 134 |
> |
#define PICFMT "32-bit_rle_???e" /* matches either */ |
| 135 |
> |
#define LPICFMT 15 /* max format id len */ |
| 136 |
|
|
| 137 |
|
/* macros for exposures */ |
| 138 |
|
#define EXPOSSTR "EXPOSURE=" |
| 139 |
< |
#define EXPOSSTRL 9 |
| 140 |
< |
#define isexpos(hl) (!strncmp(hl,EXPOSSTR,EXPOSSTRL)) |
| 141 |
< |
#define exposval(hl) atof((hl)+EXPOSSTRL) |
| 139 |
> |
#define LEXPOSSTR 9 |
| 140 |
> |
#define isexpos(hl) (!strncmp(hl,EXPOSSTR,LEXPOSSTR)) |
| 141 |
> |
#define exposval(hl) atof((hl)+LEXPOSSTR) |
| 142 |
|
#define fputexpos(ex,fp) fprintf(fp,"%s%e\n",EXPOSSTR,ex) |
| 143 |
|
|
| 144 |
|
/* macros for pixel aspect ratios */ |
| 145 |
|
#define ASPECTSTR "PIXASPECT=" |
| 146 |
< |
#define ASPECTSTRL 10 |
| 147 |
< |
#define isaspect(hl) (!strncmp(hl,ASPECTSTR,ASPECTSTRL)) |
| 148 |
< |
#define aspectval(hl) atof((hl)+ASPECTSTRL) |
| 146 |
> |
#define LASPECTSTR 10 |
| 147 |
> |
#define isaspect(hl) (!strncmp(hl,ASPECTSTR,LASPECTSTR)) |
| 148 |
> |
#define aspectval(hl) atof((hl)+LASPECTSTR) |
| 149 |
|
#define fputaspect(pa,fp) fprintf(fp,"%s%f\n",ASPECTSTR,pa) |
| 150 |
|
|
| 151 |
+ |
/* macros for primary specifications */ |
| 152 |
+ |
#define PRIMARYSTR "PRIMARIES=" |
| 153 |
+ |
#define LPRIMARYSTR 10 |
| 154 |
+ |
#define isprims(hl) (!strncmp(hl,PRIMARYSTR,LPRIMARYSTR)) |
| 155 |
+ |
#define primsval(p,hl) sscanf(hl+LPRIMARYSTR, \ |
| 156 |
+ |
"%f %f %f %f %f %f %f %f", \ |
| 157 |
+ |
&(p)[RED][CIEX],&(p)[RED][CIEY], \ |
| 158 |
+ |
&(p)[GRN][CIEX],&(p)[GRN][CIEY], \ |
| 159 |
+ |
&(p)[BLU][CIEX],&(p)[BLU][CIEY], \ |
| 160 |
+ |
&(p)[WHT][CIEX],&(p)[WHT][CIEY]) |
| 161 |
+ |
#define fputprims(p,fp) fprintf(fp, \ |
| 162 |
+ |
"%s %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n",\ |
| 163 |
+ |
PRIMARYSTR, \ |
| 164 |
+ |
(p)[RED][CIEX],(p)[RED][CIEY], \ |
| 165 |
+ |
(p)[GRN][CIEX],(p)[GRN][CIEY], \ |
| 166 |
+ |
(p)[BLU][CIEX],(p)[BLU][CIEY], \ |
| 167 |
+ |
(p)[WHT][CIEX],(p)[WHT][CIEY]) |
| 168 |
+ |
|
| 169 |
|
/* macros for color correction */ |
| 170 |
|
#define COLCORSTR "COLORCORR=" |
| 171 |
< |
#define COLCORSTRL 10 |
| 172 |
< |
#define iscolcor(hl) (!strncmp(hl,COLCORSTR,COLCORSTRL)) |
| 173 |
< |
#define colcorval(cc,hl) sscanf(hl+COLCORSTRL,"%f %f %f", \ |
| 171 |
> |
#define LCOLCORSTR 10 |
| 172 |
> |
#define iscolcor(hl) (!strncmp(hl,COLCORSTR,LCOLCORSTR)) |
| 173 |
> |
#define colcorval(cc,hl) sscanf(hl+LCOLCORSTR,"%f %f %f", \ |
| 174 |
|
&(cc)[RED],&(cc)[GRN],&(cc)[BLU]) |
| 175 |
|
#define fputcolcor(cc,fp) fprintf(fp,"%s %f %f %f\n",COLCORSTR, \ |
| 176 |
|
(cc)[RED],(cc)[GRN],(cc)[BLU]) |
| 177 |
|
|
| 178 |
< |
extern double ldexp(), atof(); |
| 178 |
> |
#ifdef DCL_ATOF |
| 179 |
> |
extern double atof(), ldexp(), frexp(); |
| 180 |
> |
#endif |
| 181 |
> |
|
| 182 |
> |
/* |
| 183 |
> |
* Conversions to and from XYZ space generally don't apply WHTEFFICACY. |
| 184 |
> |
* If you need Y to be luminance (cd/m^2), this must be applied when |
| 185 |
> |
* converting from radiance (watts/sr/m^2). |
| 186 |
> |
*/ |
| 187 |
> |
|
| 188 |
> |
extern RGBPRIMS stdprims; /* standard primary chromaticities */ |
| 189 |
> |
extern COLORMAT rgb2xyzmat; /* RGB to XYZ conversion matrix */ |
| 190 |
> |
extern COLORMAT xyz2rgbmat; /* XYZ to RGB conversion matrix */ |
| 191 |
> |
extern COLOR cblack, cwhite; /* black (0,0,0) and white (1,1,1) */ |
| 192 |
> |
|
| 193 |
> |
#define CGAMUT_LOWER 01 |
| 194 |
> |
#define CGAMUT_UPPER 02 |
| 195 |
> |
#define CGAMUT (CGAMUT_LOWER|CGAMUT_UPPER) |
| 196 |
> |
|
| 197 |
> |
#define rgb_cie(xyz,rgb) colortrans(xyz,rgb2xyzmat,rgb) |
| 198 |
> |
|
| 199 |
> |
#ifdef BSD |
| 200 |
> |
#define cpcolormat(md,ms) bcopy((char *)ms,(char *)md,sizeof(COLORMAT)) |
| 201 |
> |
#else |
| 202 |
> |
#define cpcolormat(md,ms) memcpy((char *)md,(char *)ms,sizeof(COLORMAT)) |
| 203 |
> |
#endif |
