| 1 |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Combine picture files according to calcomp functions. |
| 9 |
* |
| 10 |
* 1/4/89 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include <stdio.h> |
| 14 |
|
| 15 |
#include <errno.h> |
| 16 |
|
| 17 |
#include "color.h" |
| 18 |
|
| 19 |
#include "calcomp.h" |
| 20 |
|
| 21 |
#define MAXINP 32 /* maximum number of input files */ |
| 22 |
#define WINSIZ 9 /* scanline window size */ |
| 23 |
#define MIDSCN 4 /* current scan position */ |
| 24 |
|
| 25 |
#define BRT (-1) /* special index for brightness */ |
| 26 |
|
| 27 |
struct { |
| 28 |
char *name; /* file name */ |
| 29 |
FILE *fp; /* stream pointer */ |
| 30 |
COLOR *scan[WINSIZ]; /* input scanline window */ |
| 31 |
COLOR coef; /* coefficient */ |
| 32 |
} input[MAXINP]; /* input pictures */ |
| 33 |
|
| 34 |
int nfiles; /* number of input files */ |
| 35 |
|
| 36 |
char *vcolin[3] = {"ri", "gi", "bi"}; |
| 37 |
char *vcolout[3] = {"ro", "go", "bo"}; |
| 38 |
char vbrtin[] = "li"; |
| 39 |
char vbrtout[] = "lo"; |
| 40 |
char *vcolcoef[3] = {"rc", "gc", "bc"}; |
| 41 |
char vbrtcoef[] = "lc"; |
| 42 |
|
| 43 |
#define vnfiles "nfiles" |
| 44 |
#define vxres "xres" |
| 45 |
#define vyres "yres" |
| 46 |
#define vxpos "x" |
| 47 |
#define vypos "y" |
| 48 |
|
| 49 |
int nowarn = 0; /* no warning messages? */ |
| 50 |
|
| 51 |
int original = 0; /* origninal values? */ |
| 52 |
|
| 53 |
int xres=0, yres=0; /* picture resolution */ |
| 54 |
|
| 55 |
int xpos, ypos; /* picture position */ |
| 56 |
|
| 57 |
int wrongformat = 0; |
| 58 |
|
| 59 |
|
| 60 |
main(argc, argv) |
| 61 |
int argc; |
| 62 |
char *argv[]; |
| 63 |
{ |
| 64 |
double f; |
| 65 |
int a, i; |
| 66 |
/* scan options */ |
| 67 |
for (a = 1; a < argc; a++) { |
| 68 |
if (argv[a][0] == '-') |
| 69 |
switch (argv[a][1]) { |
| 70 |
case 'x': |
| 71 |
xres = atoi(argv[++a]); |
| 72 |
continue; |
| 73 |
case 'y': |
| 74 |
yres = atoi(argv[++a]); |
| 75 |
continue; |
| 76 |
case 'w': |
| 77 |
nowarn = !nowarn; |
| 78 |
continue; |
| 79 |
case 'o': |
| 80 |
original = !original; |
| 81 |
continue; |
| 82 |
case 'f': |
| 83 |
case 'e': |
| 84 |
a++; |
| 85 |
continue; |
| 86 |
} |
| 87 |
break; |
| 88 |
} |
| 89 |
/* process files */ |
| 90 |
for (nfiles = 0; nfiles < MAXINP; nfiles++) |
| 91 |
setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
| 92 |
nfiles = 0; |
| 93 |
for ( ; a < argc; a++) { |
| 94 |
if (nfiles >= MAXINP) { |
| 95 |
eputs(argv[0]); |
| 96 |
eputs(": too many picture files\n"); |
| 97 |
quit(1); |
| 98 |
} |
| 99 |
if (argv[a][0] == '-') |
| 100 |
switch (argv[a][1]) { |
| 101 |
case '\0': |
| 102 |
input[nfiles].name = "<stdin>"; |
| 103 |
input[nfiles].fp = stdin; |
| 104 |
break; |
| 105 |
case 's': |
| 106 |
f = atof(argv[++a]); |
| 107 |
scalecolor(input[nfiles].coef, f); |
| 108 |
continue; |
| 109 |
case 'c': |
| 110 |
colval(input[nfiles].coef,RED)*=atof(argv[++a]); |
| 111 |
colval(input[nfiles].coef,GRN)*=atof(argv[++a]); |
| 112 |
colval(input[nfiles].coef,BLU)*=atof(argv[++a]); |
| 113 |
continue; |
| 114 |
default: |
| 115 |
goto usage; |
| 116 |
} |
| 117 |
else { |
| 118 |
input[nfiles].name = argv[a]; |
| 119 |
input[nfiles].fp = fopen(argv[a], "r"); |
| 120 |
if (input[nfiles].fp == NULL) { |
| 121 |
perror(argv[a]); |
| 122 |
quit(1); |
| 123 |
} |
| 124 |
} |
| 125 |
checkfile(); |
| 126 |
nfiles++; |
| 127 |
} |
| 128 |
init(); /* set constant expressions */ |
| 129 |
/* go back and get expressions */ |
| 130 |
for (a = 1; a < argc; a++) { |
| 131 |
if (argv[a][0] == '-') |
| 132 |
switch (argv[a][1]) { |
| 133 |
case 'x': |
| 134 |
case 'y': |
| 135 |
a++; |
| 136 |
continue; |
| 137 |
case 'w': |
| 138 |
case 'o': |
| 139 |
continue; |
| 140 |
case 'f': |
| 141 |
fcompile(argv[++a]); |
| 142 |
continue; |
| 143 |
case 'e': |
| 144 |
scompile(argv[++a], NULL, 0); |
| 145 |
continue; |
| 146 |
} |
| 147 |
break; |
| 148 |
} |
| 149 |
/* complete header */ |
| 150 |
printargs(argc, argv, stdout); |
| 151 |
fputformat(COLRFMT, stdout); |
| 152 |
putchar('\n'); |
| 153 |
fputresolu(YMAJOR|YDECR, xres, yres, stdout); |
| 154 |
/* combine pictures */ |
| 155 |
combine(); |
| 156 |
quit(0); |
| 157 |
usage: |
| 158 |
eputs("Usage: "); |
| 159 |
eputs(argv[0]); |
| 160 |
eputs( |
| 161 |
" [-w][-h][-x xr][-y yr][-e expr][-f file] [ [-s f][-c r g b] pic ..]\n"); |
| 162 |
quit(1); |
| 163 |
} |
| 164 |
|
| 165 |
|
| 166 |
tputs(s) /* put out string preceded by a tab */ |
| 167 |
char *s; |
| 168 |
{ |
| 169 |
char fmt[32]; |
| 170 |
double d; |
| 171 |
COLOR ctmp; |
| 172 |
|
| 173 |
if (isformat(s)) { /* check format */ |
| 174 |
formatval(fmt, s); |
| 175 |
wrongformat = strcmp(fmt, COLRFMT); |
| 176 |
} else if (original && isexpos(s)) { /* exposure */ |
| 177 |
d = 1.0/exposval(s); |
| 178 |
scalecolor(input[nfiles].coef, d); |
| 179 |
} else if (original && iscolcor(s)) { /* color correction */ |
| 180 |
colcorval(ctmp, s); |
| 181 |
colval(input[nfiles].coef,RED) /= colval(ctmp,RED); |
| 182 |
colval(input[nfiles].coef,GRN) /= colval(ctmp,GRN); |
| 183 |
colval(input[nfiles].coef,BLU) /= colval(ctmp,BLU); |
| 184 |
} else { /* echo unaffected line */ |
| 185 |
putchar('\t'); |
| 186 |
fputs(s, stdout); |
| 187 |
} |
| 188 |
} |
| 189 |
|
| 190 |
|
| 191 |
checkfile() /* ready a file */ |
| 192 |
{ |
| 193 |
register int i; |
| 194 |
/* process header */ |
| 195 |
fputs(input[nfiles].name, stdout); |
| 196 |
fputs(":\n", stdout); |
| 197 |
getheader(input[nfiles].fp, tputs, NULL); |
| 198 |
if (wrongformat) { |
| 199 |
eputs(input[nfiles].name); |
| 200 |
eputs(": not in Radiance picture format\n"); |
| 201 |
quit(1); |
| 202 |
} |
| 203 |
if (fgetresolu(&xpos, &ypos, input[nfiles].fp) != (YMAJOR|YDECR)) { |
| 204 |
eputs(input[nfiles].name); |
| 205 |
eputs(": bad picture size\n"); |
| 206 |
quit(1); |
| 207 |
} |
| 208 |
if (xres == 0 && yres == 0) { |
| 209 |
xres = xpos; |
| 210 |
yres = ypos; |
| 211 |
} else if (xpos != xres || ypos != yres) { |
| 212 |
eputs(input[nfiles].name); |
| 213 |
eputs(": resolution mismatch\n"); |
| 214 |
quit(1); |
| 215 |
} |
| 216 |
/* allocate scanlines */ |
| 217 |
for (i = 0; i < WINSIZ; i++) |
| 218 |
input[nfiles].scan[i] = (COLOR *)emalloc(xres*sizeof(COLOR)); |
| 219 |
} |
| 220 |
|
| 221 |
|
| 222 |
init() /* perform final setup */ |
| 223 |
{ |
| 224 |
double l_colin(), l_coef(); |
| 225 |
register int i; |
| 226 |
/* prime input */ |
| 227 |
for (ypos = yres+(MIDSCN-1); ypos >= yres; ypos--) |
| 228 |
advance(); |
| 229 |
/* define constants */ |
| 230 |
varset(vnfiles, ':', (double)nfiles); |
| 231 |
varset(vxres, ':', (double)xres); |
| 232 |
varset(vyres, ':', (double)yres); |
| 233 |
/* set functions */ |
| 234 |
for (i = 0; i < 3; i++) { |
| 235 |
funset(vcolcoef[i], 1, ':', l_coef); |
| 236 |
funset(vcolin[i], 1, '=', l_colin); |
| 237 |
} |
| 238 |
funset(vbrtcoef, 1, ':', l_coef); |
| 239 |
funset(vbrtin, 1, '=', l_colin); |
| 240 |
} |
| 241 |
|
| 242 |
|
| 243 |
combine() /* combine pictures */ |
| 244 |
{ |
| 245 |
EPNODE *coldef[3], *brtdef; |
| 246 |
COLOR *scanout; |
| 247 |
double d; |
| 248 |
register int i, j; |
| 249 |
/* check defined variables */ |
| 250 |
for (j = 0; j < 3; j++) { |
| 251 |
if (vardefined(vcolout[j])) |
| 252 |
coldef[j] = eparse(vcolout[j]); |
| 253 |
else |
| 254 |
coldef[j] = NULL; |
| 255 |
} |
| 256 |
if (vardefined(vbrtout)) |
| 257 |
brtdef = eparse(vbrtout); |
| 258 |
else |
| 259 |
brtdef = NULL; |
| 260 |
/* allocate scanline */ |
| 261 |
scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
| 262 |
/* combine files */ |
| 263 |
for (ypos = yres-1; ypos >= 0; ypos--) { |
| 264 |
advance(); |
| 265 |
varset(vypos, '=', (double)ypos); |
| 266 |
for (xpos = 0; xpos < xres; xpos++) { |
| 267 |
varset(vxpos, '=', (double)xpos); |
| 268 |
eclock++; |
| 269 |
if (brtdef != NULL) { |
| 270 |
d = evalue(brtdef); |
| 271 |
if (d < 0.0) |
| 272 |
d = 0.0; |
| 273 |
setcolor(scanout[xpos], d, d, d); |
| 274 |
} else { |
| 275 |
for (j = 0; j < 3; j++) { |
| 276 |
if (coldef[j] != NULL) { |
| 277 |
d = evalue(coldef[j]); |
| 278 |
} else { |
| 279 |
d = 0.0; |
| 280 |
for (i = 0; i < nfiles; i++) |
| 281 |
d += colval(input[i].scan[MIDSCN][xpos],j); |
| 282 |
} |
| 283 |
if (d < 0.0) |
| 284 |
d = 0.0; |
| 285 |
colval(scanout[xpos],j) = d; |
| 286 |
} |
| 287 |
} |
| 288 |
} |
| 289 |
if (fwritescan(scanout, xres, stdout) < 0) { |
| 290 |
perror("write error"); |
| 291 |
quit(1); |
| 292 |
} |
| 293 |
} |
| 294 |
efree(scanout); |
| 295 |
} |
| 296 |
|
| 297 |
|
| 298 |
advance() /* read in next scanline */ |
| 299 |
{ |
| 300 |
register COLOR *st; |
| 301 |
register int i, j; |
| 302 |
|
| 303 |
for (i = 0; i < nfiles; i++) { |
| 304 |
st = input[i].scan[WINSIZ-1]; |
| 305 |
for (j = WINSIZ-1; j > 0; j--) /* rotate window */ |
| 306 |
input[i].scan[j] = input[i].scan[j-1]; |
| 307 |
input[i].scan[0] = st; |
| 308 |
if (ypos < MIDSCN) /* hit bottom */ |
| 309 |
continue; |
| 310 |
if (freadscan(st, xres, input[i].fp) < 0) { |
| 311 |
eputs(input[i].name); |
| 312 |
eputs(": read error\n"); |
| 313 |
quit(1); |
| 314 |
} |
| 315 |
for (j = 0; j < xres; j++) /* adjust color */ |
| 316 |
multcolor(st[j], input[i].coef); |
| 317 |
} |
| 318 |
} |
| 319 |
|
| 320 |
|
| 321 |
double |
| 322 |
l_coef(nam) /* return picture coefficients */ |
| 323 |
register char *nam; |
| 324 |
{ |
| 325 |
register int fn, n; |
| 326 |
double d; |
| 327 |
|
| 328 |
d = argument(1); |
| 329 |
if (d > -.5 && d < .5) |
| 330 |
return((double)nfiles); |
| 331 |
fn = d - .5; |
| 332 |
if (fn < 0 || fn >= nfiles) { |
| 333 |
errno = EDOM; |
| 334 |
return(0.0); |
| 335 |
} |
| 336 |
if (nam == vbrtcoef) |
| 337 |
return(bright(input[fn].coef)); |
| 338 |
n = 3; |
| 339 |
while (n--) |
| 340 |
if (nam == vcolcoef[n]) |
| 341 |
return(colval(input[fn].coef,n)); |
| 342 |
eputs("Bad call to l_coef()!\n"); |
| 343 |
quit(1); |
| 344 |
} |
| 345 |
|
| 346 |
|
| 347 |
double |
| 348 |
l_colin(nam) /* return color value for picture */ |
| 349 |
register char *nam; |
| 350 |
{ |
| 351 |
int fn; |
| 352 |
register int n, xoff, yoff; |
| 353 |
double d; |
| 354 |
|
| 355 |
d = argument(1); |
| 356 |
if (d > -.5 && d < .5) |
| 357 |
return((double)nfiles); |
| 358 |
fn = d - .5; |
| 359 |
if (fn < 0 || fn >= nfiles) { |
| 360 |
errno = EDOM; |
| 361 |
return(0.0); |
| 362 |
} |
| 363 |
xoff = yoff = 0; |
| 364 |
n = nargum(); |
| 365 |
if (n >= 2) { |
| 366 |
d = argument(2); |
| 367 |
if (d < 0.0) { |
| 368 |
xoff = d-.5; |
| 369 |
if (xpos+xoff < 0) |
| 370 |
xoff = -xpos; |
| 371 |
} else { |
| 372 |
xoff = d+.5; |
| 373 |
if (xpos+xoff >= xres) |
| 374 |
xoff = xres-1-xpos; |
| 375 |
} |
| 376 |
} |
| 377 |
if (n >= 3) { |
| 378 |
d = argument(3); |
| 379 |
if (d < 0.0) { |
| 380 |
yoff = d-.5; |
| 381 |
if (yoff+MIDSCN < 0) |
| 382 |
yoff = -MIDSCN; |
| 383 |
if (ypos+yoff < 0) |
| 384 |
yoff = -ypos; |
| 385 |
} else { |
| 386 |
yoff = d+.5; |
| 387 |
if (yoff+MIDSCN >= WINSIZ) |
| 388 |
yoff = WINSIZ-1-MIDSCN; |
| 389 |
if (ypos+yoff >= yres) |
| 390 |
yoff = yres-1-ypos; |
| 391 |
} |
| 392 |
} |
| 393 |
if (nam == vbrtin) |
| 394 |
return(bright(input[fn].scan[MIDSCN+yoff][xpos+xoff])); |
| 395 |
n = 3; |
| 396 |
while (n--) |
| 397 |
if (nam == vcolin[n]) |
| 398 |
return(colval(input[fn].scan[MIDSCN+yoff][xpos+xoff],n)); |
| 399 |
eputs("Bad call to l_colin()!\n"); |
| 400 |
quit(1); |
| 401 |
} |
| 402 |
|
| 403 |
|
| 404 |
wputs(msg) |
| 405 |
char *msg; |
| 406 |
{ |
| 407 |
if (!nowarn) |
| 408 |
eputs(msg); |
| 409 |
} |
| 410 |
|
| 411 |
|
| 412 |
eputs(msg) |
| 413 |
char *msg; |
| 414 |
{ |
| 415 |
fputs(msg, stderr); |
| 416 |
} |
| 417 |
|
| 418 |
|
| 419 |
quit(code) |
| 420 |
int code; |
| 421 |
{ |
| 422 |
exit(code); |
| 423 |
} |
