| 13 |
|
#include <fcntl.h> |
| 14 |
|
#endif |
| 15 |
|
#include "color.h" |
| 16 |
– |
#include "random.h" |
| 16 |
|
|
| 17 |
+ |
#define GRY -1 /* artificial index for grey */ |
| 18 |
+ |
|
| 19 |
|
#define HMARGIN (.5*72) /* horizontal margin */ |
| 20 |
|
#define VMARGIN (.5*72) /* vertical margin */ |
| 21 |
|
#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
| 22 |
|
#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
| 23 |
|
|
| 24 |
+ |
#define RUNCHR '*' /* character to start rle */ |
| 25 |
+ |
#define MINRUN 4 /* minimum run-length */ |
| 26 |
+ |
#define RSTRT '!' /* character for MINRUN */ |
| 27 |
+ |
#define MAXRUN (MINRUN+'~'-RSTRT) /* maximum run-length */ |
| 28 |
+ |
|
| 29 |
|
char code[] = /* 6-bit code lookup table */ |
| 30 |
|
"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@+"; |
| 31 |
|
|
| 32 |
|
int wrongformat = 0; /* input in wrong format? */ |
| 33 |
|
double pixaspect = 1.0; /* pixel aspect ratio */ |
| 34 |
|
|
| 35 |
+ |
int docolor = 0; /* produce color image? */ |
| 36 |
|
int bradj = 0; /* brightness adjustment */ |
| 37 |
|
int ncopies = 1; /* number of copies */ |
| 38 |
|
|
| 67 |
|
for (i = 1; i < argc; i++) |
| 68 |
|
if (argv[i][0] == '-') |
| 69 |
|
switch (argv[i][1]) { |
| 70 |
+ |
case 'c': /* produce color PostScript */ |
| 71 |
+ |
docolor++; |
| 72 |
+ |
break; |
| 73 |
|
case 'e': /* exposure adjustment */ |
| 74 |
|
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 75 |
|
goto userr; |
| 111 |
|
PStrailer(); |
| 112 |
|
exit(0); |
| 113 |
|
userr: |
| 114 |
< |
fprintf(stderr, "Usage: %s [-e +/-stops] [input [output]]\n", progname); |
| 114 |
> |
fprintf(stderr, "Usage: %s [-c][-e +/-stops] [input [output]]\n", |
| 115 |
> |
progname); |
| 116 |
|
exit(1); |
| 117 |
|
} |
| 118 |
|
|
| 134 |
|
int landscape = 0; |
| 135 |
|
double pwidth, pheight; |
| 136 |
|
double iwidth, iheight; |
| 137 |
< |
|
| 138 |
< |
printf("%%!\n"); |
| 137 |
> |
/* EPS comments */ |
| 138 |
> |
puts("%!PS-Adobe-2.0 EPSF-2.0"); |
| 139 |
|
printf("%%%%Title: %s\n", name); |
| 140 |
< |
printf("%%%%Creator: %s\n", progname); |
| 140 |
> |
printf("%%%%Creator: %s = %s\n", progname, SCCSid); |
| 141 |
|
printf("%%%%Pages: %d\n", ncopies); |
| 142 |
|
if (landscape = xmax > pixaspect*ymax) |
| 143 |
< |
printf("%%%%Landscape\n"); |
| 143 |
> |
puts("%%Orientation: Landscape"); |
| 144 |
|
else |
| 145 |
< |
printf("%%%%Portrait\n"); |
| 135 |
< |
printf("%%%%EndComments\n"); |
| 136 |
< |
printf("64 dict begin\n"); |
| 137 |
< |
/* define image reader */ |
| 138 |
< |
PSprocdef("read6bit"); |
| 139 |
< |
/* set up transformation matrix */ |
| 140 |
< |
printf("%f %f translate\n", HMARGIN, VMARGIN); |
| 145 |
> |
puts("%%Orientation: Portrait"); |
| 146 |
|
if (PWIDTH > PHEIGHT ^ landscape) { |
| 142 |
– |
printf("0 %f translate\n", PHEIGHT); |
| 143 |
– |
printf("-90 rotate\n"); |
| 147 |
|
pwidth = PHEIGHT; |
| 148 |
|
pheight = PWIDTH; |
| 149 |
|
} else { |
| 157 |
|
iheight = pheight; |
| 158 |
|
iwidth = pheight*xmax/(pixaspect*ymax); |
| 159 |
|
} |
| 160 |
+ |
if (pwidth == PHEIGHT) |
| 161 |
+ |
printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
| 162 |
+ |
HMARGIN+(pheight-iheight)*.5, |
| 163 |
+ |
VMARGIN+(pwidth-iwidth)*.5, |
| 164 |
+ |
HMARGIN+(pheight-iheight)*.5+iheight, |
| 165 |
+ |
VMARGIN+(pwidth-iwidth)*.5+iwidth); |
| 166 |
+ |
else |
| 167 |
+ |
printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
| 168 |
+ |
HMARGIN+(pwidth-iwidth)*.5, |
| 169 |
+ |
VMARGIN+(pheight-iheight)*.5, |
| 170 |
+ |
HMARGIN+(pwidth-iwidth)*.5+iwidth, |
| 171 |
+ |
VMARGIN+(pheight-iheight)*.5+iheight); |
| 172 |
+ |
puts("%%EndComments"); |
| 173 |
+ |
puts("save"); |
| 174 |
+ |
puts("64 dict begin"); |
| 175 |
+ |
/* define image reader */ |
| 176 |
+ |
if (docolor) { |
| 177 |
+ |
printf("/redline %d string def\n", xmax); |
| 178 |
+ |
printf("/grnline %d string def\n", xmax); |
| 179 |
+ |
printf("/bluline %d string def\n", xmax); |
| 180 |
+ |
printf("/rgbline %d string def\n", 3*xmax); |
| 181 |
+ |
PSprocdef("read6bitRLE", "interleave"); |
| 182 |
+ |
} else { |
| 183 |
+ |
printf("/greyline %d string def\n", xmax); |
| 184 |
+ |
PSprocdef("read6bitRLE", NULL); |
| 185 |
+ |
} |
| 186 |
+ |
/* set up transformation matrix */ |
| 187 |
+ |
printf("%f %f translate\n", HMARGIN, VMARGIN); |
| 188 |
+ |
if (pwidth == PHEIGHT) { |
| 189 |
+ |
printf("0 %f translate\n", PHEIGHT); |
| 190 |
+ |
puts("-90 rotate"); |
| 191 |
+ |
} |
| 192 |
|
printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); |
| 193 |
|
printf("%f %f scale\n", iwidth, iheight); |
| 194 |
< |
printf("%%%%EndProlog\n"); |
| 194 |
> |
puts("%%EndProlog"); |
| 195 |
|
/* start image procedure */ |
| 196 |
< |
printf("%d %d 8 [%d 0 0 %d 0 %d] {read6bit} image", xmax, ymax, |
| 197 |
< |
xmax, -ymax, ymax); |
| 196 |
> |
printf("%d %d 8 [%d 0 0 %d 0 %d] ", xmax, ymax, xmax, -ymax, ymax); |
| 197 |
> |
if (docolor) { |
| 198 |
> |
puts("{redline read6bitRLE grnline read6bitRLE"); |
| 199 |
> |
puts("\tbluline read6bitRLE rgbline interleave} false 3 colorimage"); |
| 200 |
> |
} else |
| 201 |
> |
puts("{greyline read6bitRLE} image"); |
| 202 |
|
} |
| 203 |
|
|
| 204 |
|
|
| 209 |
|
printf("/#copies %d def\n", ncopies); |
| 210 |
|
puts("showpage"); |
| 211 |
|
puts("end"); |
| 212 |
+ |
puts("restore"); |
| 213 |
|
puts("%%EOF"); |
| 214 |
|
} |
| 215 |
|
|
| 216 |
|
|
| 217 |
< |
PSprocdef(nam) /* define PS procedure to read image */ |
| 218 |
< |
char *nam; |
| 217 |
> |
PSprocdef(nam, inam) /* define PS procedure to read image */ |
| 218 |
> |
char *nam, *inam; |
| 219 |
|
{ |
| 220 |
|
short itab[128]; |
| 221 |
|
register int i; |
| 226 |
|
itab[code[i]] = i<<2 | 2; |
| 227 |
|
itab[code[0]] = 0; /* black is black */ |
| 228 |
|
itab[code[63]] = 255; /* and white is white */ |
| 229 |
< |
printf("/decode ["); |
| 229 |
> |
printf("/codetab ["); |
| 230 |
|
for (i = 0; i < 128; i++) { |
| 231 |
|
if (!(i & 0xf)) |
| 232 |
|
putchar('\n'); |
| 233 |
|
printf(" %3d", itab[i]); |
| 234 |
|
} |
| 235 |
|
printf("\n] def\n"); |
| 236 |
< |
printf("/scanline %d string def\n", xmax); |
| 237 |
< |
printf("/%s {\n", nam); |
| 236 |
> |
printf("/nrept 0 def\n"); |
| 237 |
> |
printf("/readbyte { currentfile read not {stop} if } bind def\n"); |
| 238 |
> |
printf("/decode { codetab exch get } bind def\n"); |
| 239 |
> |
printf("/%s {\t%% scanbuffer\n", nam); |
| 240 |
> |
printf("\t/scanline exch def\n"); |
| 241 |
|
printf("\t{ 0 1 %d { scanline exch\n", xmax-1); |
| 242 |
< |
printf("\t\t{ decode currentfile read not {stop} if get\n"); |
| 243 |
< |
printf("\tdup 0 lt {pop} {exit} ifelse } loop put } for\n"); |
| 244 |
< |
printf("\t} stopped {pop pop pop 0 string} {scanline} ifelse\n"); |
| 242 |
> |
printf("\t\tnrept 0 le\n"); |
| 243 |
> |
printf("\t\t\t{ { readbyte dup %d eq\n", RUNCHR); |
| 244 |
> |
printf("\t\t\t\t\t{ pop /nrept readbyte %d sub def\n", RSTRT-MINRUN+1); |
| 245 |
> |
printf("\t\t\t\t\t\t/reptv readbyte decode def\n"); |
| 246 |
> |
printf("\t\t\t\t\t\treptv exit }\n"); |
| 247 |
> |
printf("\t\t\t\t\t{ decode dup 0 lt {pop} {exit} ifelse }\n"); |
| 248 |
> |
printf("\t\t\t\tifelse } loop }\n"); |
| 249 |
> |
printf("\t\t\t{ /nrept nrept 1 sub def reptv }\n"); |
| 250 |
> |
printf("\t\tifelse put\n"); |
| 251 |
> |
printf("\t\t} for\n"); |
| 252 |
> |
printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); |
| 253 |
|
printf("} bind def\n"); |
| 254 |
+ |
if (inam == NULL) |
| 255 |
+ |
return; |
| 256 |
+ |
/* define interleaving procedure */ |
| 257 |
+ |
printf("/%s {\t%% redscn grnscn bluscn rgbscn\n", inam); |
| 258 |
+ |
printf("\t/rgbscan exch def /bscan exch def\n"); |
| 259 |
+ |
printf("\t/gscan exch def /rscan exch def\n"); |
| 260 |
+ |
printf("\trscan length %d eq gscan length %d eq and ", xmax, xmax); |
| 261 |
+ |
printf("bscan length %d eq and \n", xmax); |
| 262 |
+ |
printf("\t{ 0 1 %d { /ndx exch def\n", xmax-1); |
| 263 |
+ |
printf("\t\trgbscan ndx 3 mul rscan ndx get put\n"); |
| 264 |
+ |
printf("\t\trgbscan ndx 3 mul 1 add gscan ndx get put\n"); |
| 265 |
+ |
printf("\t\trgbscan ndx 3 mul 2 add bscan ndx get put\n"); |
| 266 |
+ |
printf("\t\t} for rgbscan }\n"); |
| 267 |
+ |
printf("\t{0 string} ifelse\n"); |
| 268 |
+ |
printf("} bind def\n"); |
| 269 |
|
} |
| 270 |
|
|
| 271 |
|
|
| 272 |
|
ra2ps() /* convert Radiance scanlines to 6-bit */ |
| 273 |
|
{ |
| 274 |
< |
COLR *scanin; |
| 209 |
< |
register int col = 0; |
| 210 |
< |
register int c; |
| 211 |
< |
register int x; |
| 274 |
> |
register COLR *scanin; |
| 275 |
|
int y; |
| 276 |
|
/* allocate scanline */ |
| 277 |
|
scanin = (COLR *)malloc(xmax*sizeof(COLR)); |
| 282 |
|
if (freadcolrs(scanin, xmax, stdin) < 0) |
| 283 |
|
quiterr("error reading Radiance picture"); |
| 284 |
|
normcolrs(scanin, xmax, bradj); /* normalize */ |
| 285 |
< |
for (x = 0; x < xmax; x++) { |
| 286 |
< |
if (!(col++ & 0x3f)) |
| 287 |
< |
putchar('\n'); |
| 288 |
< |
c = normbright(scanin[x]) + (random()&3); |
| 289 |
< |
if (c > 255) c = 255; |
| 290 |
< |
putchar(code[c>>2]); |
| 228 |
< |
} |
| 285 |
> |
if (docolor) { |
| 286 |
> |
putprim(scanin, RED); |
| 287 |
> |
putprim(scanin, GRN); |
| 288 |
> |
putprim(scanin, BLU); |
| 289 |
> |
} else |
| 290 |
> |
putprim(scanin, GRY); |
| 291 |
|
if (ferror(stdout)) |
| 292 |
|
quiterr("error writing PostScript file"); |
| 293 |
|
} |
| 294 |
|
putchar('\n'); |
| 295 |
|
/* free scanline */ |
| 296 |
|
free((char *)scanin); |
| 297 |
+ |
} |
| 298 |
+ |
|
| 299 |
+ |
|
| 300 |
+ |
putprim(scn, pri) /* put out one primary from scanline */ |
| 301 |
+ |
COLR *scn; |
| 302 |
+ |
int pri; |
| 303 |
+ |
{ |
| 304 |
+ |
register int c; |
| 305 |
+ |
register int x; |
| 306 |
+ |
int lastc, cnt; |
| 307 |
+ |
|
| 308 |
+ |
lastc = -1; cnt = 0; |
| 309 |
+ |
for (x = 0; x < xmax; x++) { |
| 310 |
+ |
if (pri == GRY) |
| 311 |
+ |
c = normbright(scn[x]) + 2; |
| 312 |
+ |
else |
| 313 |
+ |
c = scn[x][pri] + 2; |
| 314 |
+ |
if (c > 255) c = 255; |
| 315 |
+ |
c = code[c>>2]; |
| 316 |
+ |
if (c == lastc && cnt < MAXRUN) |
| 317 |
+ |
cnt++; |
| 318 |
+ |
else { |
| 319 |
+ |
putrle(cnt, lastc); |
| 320 |
+ |
lastc = c; |
| 321 |
+ |
cnt = 1; |
| 322 |
+ |
} |
| 323 |
+ |
} |
| 324 |
+ |
putrle(cnt, lastc); |
| 325 |
+ |
} |
| 326 |
+ |
|
| 327 |
+ |
|
| 328 |
+ |
putrle(cnt, cod) /* put out cnt of cod */ |
| 329 |
+ |
register int cnt, cod; |
| 330 |
+ |
{ |
| 331 |
+ |
static int col = 0; |
| 332 |
+ |
|
| 333 |
+ |
if (cnt >= MINRUN) { |
| 334 |
+ |
col += 3; |
| 335 |
+ |
putchar(RUNCHR); |
| 336 |
+ |
putchar(RSTRT-MINRUN+cnt); |
| 337 |
+ |
putchar(cod); |
| 338 |
+ |
} else { |
| 339 |
+ |
col += cnt; |
| 340 |
+ |
while (cnt-- > 0) |
| 341 |
+ |
putchar(cod); |
| 342 |
+ |
} |
| 343 |
+ |
if (col >= 72) { |
| 344 |
+ |
putchar('\n'); |
| 345 |
+ |
col = 0; |
| 346 |
+ |
} |
| 347 |
|
} |
