| 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 */ |
| 27 |
|
|
| 28 |
< |
typedef BYTE COLR[4]; /* red, green, blue, exponent */ |
| 28 |
> |
typedef BYTE COLR[4]; /* red, green, blue (or X,Y,Z), exponent */ |
| 29 |
|
|
| 30 |
+ |
typedef float COLOR[3]; /* red, green, blue (or X,Y,Z) */ |
| 31 |
+ |
|
| 32 |
+ |
typedef float RGBPRIMS[4][2]; /* (x,y) chromaticities for RGBW */ |
| 33 |
+ |
typedef float (*RGBPRIMP)[2]; /* pointer to RGBPRIMS array */ |
| 34 |
+ |
|
| 35 |
+ |
typedef float COLORMAT[3][3]; /* color coordinate conversion matrix */ |
| 36 |
+ |
|
| 37 |
|
#define copycolr(c1,c2) (c1[0]=c2[0],c1[1]=c2[1], \ |
| 38 |
|
c1[2]=c2[2],c1[3]=c2[3]) |
| 39 |
|
|
| 29 |
– |
typedef float COLOR[3]; /* red, green, blue */ |
| 30 |
– |
|
| 40 |
|
#define colval(col,pri) ((col)[pri]) |
| 41 |
|
|
| 42 |
|
#define setcolor(col,r,g,b) ((col)[RED]=(r),(col)[GRN]=(g),(col)[BLU]=(b)) |
| 69 |
|
#define CIE_y_w 0.3333 |
| 70 |
|
#endif |
| 71 |
|
|
| 72 |
+ |
#define STDPRIMS {CIE_x_r,CIE_y_r,CIE_x_g,CIE_y_g, \ |
| 73 |
+ |
CIE_x_b,CIE_y_b,CIE_x_w,CIE_y_w} |
| 74 |
+ |
|
| 75 |
|
#define CIE_D ( CIE_x_r*(CIE_y_g - CIE_y_b) + \ |
| 76 |
|
CIE_x_g*(CIE_y_b - CIE_y_r) + \ |
| 77 |
|
CIE_x_b*(CIE_y_r - CIE_y_g) ) |
| 94 |
|
|
| 95 |
|
/* As of 9-94, CIE_rf=.265074126, CIE_gf=.670114631 and CIE_bf=.064811243 */ |
| 96 |
|
|
| 97 |
+ |
/***** The following definitions are valid for RGB colors only... *****/ |
| 98 |
+ |
|
| 99 |
|
#define bright(col) (CIE_rf*(col)[RED]+CIE_gf*(col)[GRN]+CIE_bf*(col)[BLU]) |
| 100 |
|
#define normbright(c) ( ( (long)(CIE_rf*256.+.5)*(c)[RED] + \ |
| 101 |
|
(long)(CIE_gf*256.+.5)*(c)[GRN] + \ |
| 112 |
|
|
| 113 |
|
#define luminance(col) (WHTEFFICACY * bright(col)) |
| 114 |
|
|
| 115 |
+ |
/***** ...end of stuff specific to RGB colors *****/ |
| 116 |
+ |
|
| 117 |
|
#define intens(col) ( (col)[0] > (col)[1] \ |
| 118 |
|
? (col)[0] > (col)[2] ? (col)[0] : (col)[2] \ |
| 119 |
|
: (col)[1] > (col)[2] ? (col)[1] : (col)[2] ) |
| 129 |
|
|
| 130 |
|
/* picture format identifier */ |
| 131 |
|
#define COLRFMT "32-bit_rle_rgbe" |
| 132 |
+ |
#define CIEFMT "32-bit_rle_xyze" |
| 133 |
+ |
#define PICFMT "32-bit_rle_???e" /* matches either */ |
| 134 |
+ |
#define LPICFMT 15 /* max format id len */ |
| 135 |
|
|
| 136 |
|
/* macros for exposures */ |
| 137 |
|
#define EXPOSSTR "EXPOSURE=" |
| 147 |
|
#define aspectval(hl) atof((hl)+LASPECTSTR) |
| 148 |
|
#define fputaspect(pa,fp) fprintf(fp,"%s%f\n",ASPECTSTR,pa) |
| 149 |
|
|
| 150 |
+ |
/* macros for primary specifications */ |
| 151 |
+ |
#define PRIMARYSTR "PRIMARIES=" |
| 152 |
+ |
#define LPRIMARYSTR 10 |
| 153 |
+ |
#define isprims(hl) (!strncmp(hl,PRIMARYSTR,LPRIMARYSTR)) |
| 154 |
+ |
#define primsval(p,hl) sscanf(hl+LPRIMARYSTR, \ |
| 155 |
+ |
"%f %f %f %f %f %f %f %f", \ |
| 156 |
+ |
&(p)[RED][CIEX],&(p)[RED][CIEY], \ |
| 157 |
+ |
&(p)[GRN][CIEX],&(p)[GRN][CIEY], \ |
| 158 |
+ |
&(p)[BLU][CIEX],&(p)[BLU][CIEY], \ |
| 159 |
+ |
&(p)[WHT][CIEX],&(p)[WHT][CIEY]) |
| 160 |
+ |
#define fputprims(p,fp) fprintf(fp, \ |
| 161 |
+ |
"%s %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\n",\ |
| 162 |
+ |
PRIMARYSTR, \ |
| 163 |
+ |
(p)[RED][CIEX],(p)[RED][CIEY], \ |
| 164 |
+ |
(p)[GRN][CIEX],(p)[GRN][CIEY], \ |
| 165 |
+ |
(p)[BLU][CIEX],(p)[BLU][CIEY], \ |
| 166 |
+ |
(p)[WHT][CIEX],(p)[WHT][CIEY]) |
| 167 |
+ |
|
| 168 |
|
/* macros for color correction */ |
| 169 |
|
#define COLCORSTR "COLORCORR=" |
| 170 |
|
#define LCOLCORSTR 10 |
| 176 |
|
|
| 177 |
|
#ifdef DCL_ATOF |
| 178 |
|
extern double atof(), ldexp(), frexp(); |
| 179 |
+ |
#endif |
| 180 |
+ |
|
| 181 |
+ |
/* |
| 182 |
+ |
* Conversions to and from XYZ space generally don't apply WHTEFFICACY. |
| 183 |
+ |
* If you need Y to be luminance (cd/m^2), this must be applied when |
| 184 |
+ |
* converting from radiance (watts/sr/m^2). |
| 185 |
+ |
*/ |
| 186 |
+ |
|
| 187 |
+ |
extern RGBPRIMS stdprims; /* standard primary chromaticities */ |
| 188 |
+ |
extern COLORMAT rgb2xyzmat; /* RGB to XYZ conversion matrix */ |
| 189 |
+ |
extern COLORMAT xyz2rgbmat; /* XYZ to RGB conversion matrix */ |
| 190 |
+ |
|
| 191 |
+ |
#define cie_rgb(rgb,xyz) colortrans(rgb,xyz2rgbmat,xyz) |
| 192 |
+ |
#define rgb_cie(xyz,rgb) colortrans(xyz,rgb2xyzmat,rgb) |
| 193 |
+ |
|
| 194 |
+ |
#ifdef BSD |
| 195 |
+ |
#define cpcolormat(md,ms) bcopy((char *)ms,(char *)md,sizeof(COLORMAT)) |
| 196 |
+ |
#else |
| 197 |
+ |
extern char *memcpy(); |
| 198 |
+ |
#define cpcolormat(md,ms) (void)memcpy((char *)md,(char *)ms,sizeof(COLORMAT)) |
| 199 |
|
#endif |
