| 1 |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ SGI"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Program to convert between RADIANCE and TIFF files. |
| 9 |
* Added experimental LogLuv encodings 7/97 (GWL). |
| 10 |
*/ |
| 11 |
|
| 12 |
#include <stdio.h> |
| 13 |
#include <math.h> |
| 14 |
#include "tiffio.h" |
| 15 |
#include "color.h" |
| 16 |
#include "resolu.h" |
| 17 |
|
| 18 |
#define GAMCOR 2.2 /* default gamma */ |
| 19 |
|
| 20 |
#ifndef malloc |
| 21 |
extern char *malloc(); |
| 22 |
#endif |
| 23 |
/* conversion flags */ |
| 24 |
#define C_CXFM 0x1 /* needs color transformation */ |
| 25 |
#define C_GAMUT 0x2 /* needs gamut mapping */ |
| 26 |
#define C_GAMMA 0x4 /* needs gamma correction */ |
| 27 |
#define C_GRY 0x8 /* TIFF is greyscale */ |
| 28 |
#define C_XYZE 0x10 /* Radiance is XYZE */ |
| 29 |
#define C_RFLT 0x20 /* Radiance data is float */ |
| 30 |
#define C_TFLT 0x40 /* TIFF data is float */ |
| 31 |
#define C_PRIM 0x80 /* has assigned primaries */ |
| 32 |
|
| 33 |
struct { |
| 34 |
uint16 flags; /* conversion flags (defined above) */ |
| 35 |
uint16 comp; /* TIFF compression type */ |
| 36 |
uint16 pconf; /* TIFF planar configuration */ |
| 37 |
float gamcor; /* gamma correction value */ |
| 38 |
short bradj; /* Radiance exposure adjustment (stops) */ |
| 39 |
uint16 orient; /* visual orientation (TIFF spec.) */ |
| 40 |
float stonits; /* input conversion to nits */ |
| 41 |
float pixrat; /* pixel aspect ratio */ |
| 42 |
FILE *rfp; /* Radiance stream pointer */ |
| 43 |
TIFF *tif; /* TIFF pointer */ |
| 44 |
uint32 xmax, ymax; /* image dimensions */ |
| 45 |
COLORMAT cmat; /* color transformation matrix */ |
| 46 |
RGBPRIMS prims; /* RGB primaries */ |
| 47 |
union { |
| 48 |
COLR *colrs; /* 4-byte ???E pointer */ |
| 49 |
COLOR *colors; /* float array pointer */ |
| 50 |
char *p; /* generic pointer */ |
| 51 |
} r; /* Radiance scanline */ |
| 52 |
union { |
| 53 |
uint8 *bp; /* byte pointer */ |
| 54 |
float *fp; /* float pointer */ |
| 55 |
char *p; /* generic pointer */ |
| 56 |
} t; /* TIFF scanline */ |
| 57 |
int (*tf)(); /* translation procedure */ |
| 58 |
} cvts = { /* conversion structure */ |
| 59 |
0, COMPRESSION_NONE, PLANARCONFIG_CONTIG, GAMCOR, 0, |
| 60 |
}; |
| 61 |
|
| 62 |
#define CHK(f) (cvts.flags & (f)) |
| 63 |
#define SET(f) (cvts.flags |= (f)) |
| 64 |
#define CLR(f) (cvts.flags &= ~(f)) |
| 65 |
#define TGL(f) (cvts.flags ^= (f)) |
| 66 |
|
| 67 |
int Luv2Color(), L2Color(), RGB2Colr(), Gry2Colr(); |
| 68 |
int Color2Luv(), Color2L(), Colr2RGB(), Colr2Gry(); |
| 69 |
|
| 70 |
short ortab[8] = { /* orientation conversion table */ |
| 71 |
YMAJOR|YDECR, |
| 72 |
YMAJOR|YDECR|XDECR, |
| 73 |
YMAJOR|XDECR, |
| 74 |
YMAJOR, |
| 75 |
YDECR, |
| 76 |
XDECR|YDECR, |
| 77 |
XDECR, |
| 78 |
0 |
| 79 |
}; |
| 80 |
|
| 81 |
#define pixorder() ortab[cvts.orient-1] |
| 82 |
|
| 83 |
char *progname; |
| 84 |
|
| 85 |
|
| 86 |
main(argc, argv) |
| 87 |
int argc; |
| 88 |
char *argv[]; |
| 89 |
{ |
| 90 |
int reverse = 0; |
| 91 |
int i; |
| 92 |
|
| 93 |
progname = argv[0]; |
| 94 |
|
| 95 |
for (i = 1; i < argc; i++) |
| 96 |
if (argv[i][0] == '-') |
| 97 |
switch (argv[i][1]) { |
| 98 |
case 'g': /* gamma correction */ |
| 99 |
cvts.gamcor = atof(argv[++i]); |
| 100 |
break; |
| 101 |
case 'x': /* XYZE Radiance output */ |
| 102 |
TGL(C_XYZE); |
| 103 |
break; |
| 104 |
case 'z': /* LZW compressed output */ |
| 105 |
cvts.comp = COMPRESSION_LZW; |
| 106 |
break; |
| 107 |
case 'L': /* LogLuv 32-bit output */ |
| 108 |
cvts.comp = COMPRESSION_LOGLUV32; |
| 109 |
break; |
| 110 |
case 'l': /* LogLuv 24-bit output */ |
| 111 |
cvts.comp = COMPRESSION_LOGLUV24; |
| 112 |
break; |
| 113 |
case 'b': /* greyscale output? */ |
| 114 |
TGL(C_GRY); |
| 115 |
break; |
| 116 |
case 'e': /* exposure adjustment */ |
| 117 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
| 118 |
goto userr; |
| 119 |
cvts.bradj = atoi(argv[++i]); |
| 120 |
break; |
| 121 |
case 'r': /* reverse conversion? */ |
| 122 |
reverse = !reverse; |
| 123 |
break; |
| 124 |
case '\0': |
| 125 |
goto doneopts; |
| 126 |
default: |
| 127 |
goto userr; |
| 128 |
} |
| 129 |
else |
| 130 |
break; |
| 131 |
doneopts: |
| 132 |
if (reverse) { |
| 133 |
|
| 134 |
if (i != argc-2 && i != argc-1) |
| 135 |
goto userr; |
| 136 |
|
| 137 |
tiff2ra(i, argv); |
| 138 |
|
| 139 |
} else { |
| 140 |
|
| 141 |
if (i != argc-2) |
| 142 |
goto userr; |
| 143 |
|
| 144 |
if (CHK(C_GRY) && (cvts.comp == COMPRESSION_LOGLUV24 || |
| 145 |
cvts.comp == COMPRESSION_LOGLUV32)) |
| 146 |
cvts.comp = COMPRESSION_LOGL16; |
| 147 |
|
| 148 |
ra2tiff(i, argv); |
| 149 |
} |
| 150 |
|
| 151 |
exit(0); |
| 152 |
userr: |
| 153 |
fprintf(stderr, |
| 154 |
"Usage: %s [-z|-L|-l][-b][-e +/-stops][-g gamma] {in.pic|-} out.tif\n", |
| 155 |
progname); |
| 156 |
fprintf(stderr, |
| 157 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.pic|-]\n", |
| 158 |
progname); |
| 159 |
exit(1); |
| 160 |
} |
| 161 |
|
| 162 |
|
| 163 |
quiterr(err) /* print message and exit */ |
| 164 |
char *err; |
| 165 |
{ |
| 166 |
if (err != NULL) { |
| 167 |
fprintf(stderr, "%s: %s\n", progname, err); |
| 168 |
exit(1); |
| 169 |
} |
| 170 |
exit(0); |
| 171 |
} |
| 172 |
|
| 173 |
|
| 174 |
allocbufs() /* allocate scanline buffers */ |
| 175 |
{ |
| 176 |
int rsiz, tsiz; |
| 177 |
|
| 178 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR); |
| 179 |
tsiz = (CHK(C_TFLT) ? sizeof(float) : sizeof(uint8)) * |
| 180 |
(CHK(C_GRY) ? 1 : 3); |
| 181 |
cvts.r.p = (char *)malloc(rsiz*cvts.xmax); |
| 182 |
cvts.t.p = (char *)malloc(tsiz*cvts.xmax); |
| 183 |
if (cvts.r.p == NULL | cvts.t.p == NULL) |
| 184 |
quiterr("no memory to allocate scanline buffers"); |
| 185 |
} |
| 186 |
|
| 187 |
|
| 188 |
initfromtif() /* initialize conversion from TIFF input */ |
| 189 |
{ |
| 190 |
uint16 hi; |
| 191 |
float *fa, f1, f2; |
| 192 |
|
| 193 |
CLR(C_GRY|C_GAMMA|C_PRIM|C_RFLT|C_TFLT|C_CXFM); |
| 194 |
|
| 195 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PLANARCONFIG, &cvts.pconf); |
| 196 |
|
| 197 |
if (TIFFGetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) { |
| 198 |
cvts.prims[RED][CIEX] = fa[0]; |
| 199 |
cvts.prims[RED][CIEY] = fa[1]; |
| 200 |
cvts.prims[GRN][CIEX] = fa[2]; |
| 201 |
cvts.prims[GRN][CIEY] = fa[3]; |
| 202 |
cvts.prims[BLU][CIEX] = fa[4]; |
| 203 |
cvts.prims[BLU][CIEY] = fa[5]; |
| 204 |
cvts.prims[WHT][CIEX] = 1./3.; |
| 205 |
cvts.prims[WHT][CIEY] = 1./3.; |
| 206 |
if (TIFFGetField(cvts.tif, TIFFTAG_WHITEPOINT, &fa)) { |
| 207 |
cvts.prims[WHT][CIEX] = fa[0]; |
| 208 |
cvts.prims[WHT][CIEY] = fa[1]; |
| 209 |
} |
| 210 |
SET(C_PRIM); |
| 211 |
} |
| 212 |
|
| 213 |
if (!TIFFGetField(cvts.tif, TIFFTAG_COMPRESSION, &cvts.comp)) |
| 214 |
cvts.comp = COMPRESSION_NONE; |
| 215 |
|
| 216 |
if (TIFFGetField(cvts.tif, TIFFTAG_XRESOLUTION, &f1) && |
| 217 |
TIFFGetField(cvts.tif, TIFFTAG_YRESOLUTION, &f2)) |
| 218 |
cvts.pixrat = f1/f2; |
| 219 |
else |
| 220 |
cvts.pixrat = 1.; |
| 221 |
|
| 222 |
if (!TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_ORIENTATION, &cvts.orient)) |
| 223 |
cvts.orient = 1; |
| 224 |
|
| 225 |
switch (cvts.comp) { |
| 226 |
case COMPRESSION_LOGL16: |
| 227 |
SET(C_GRY|C_RFLT|C_TFLT|C_GAMUT); |
| 228 |
cvts.pconf = PLANARCONFIG_CONTIG; |
| 229 |
TIFFSetField(cvts.tif, TIFFTAG_LOGLUVDATAFMT, |
| 230 |
LOGLUVDATAFMT_FLTY); |
| 231 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
| 232 |
SAMPLEFORMAT_IEEEFP); |
| 233 |
cvts.tf = L2Color; |
| 234 |
break; |
| 235 |
case COMPRESSION_LOGLUV24: |
| 236 |
case COMPRESSION_LOGLUV32: |
| 237 |
SET(C_RFLT|C_TFLT); |
| 238 |
if (!CHK(C_XYZE)) { |
| 239 |
cpcolormat(cvts.cmat, xyz2rgbmat); |
| 240 |
SET(C_CXFM|C_GAMUT); |
| 241 |
} else if (cvts.comp == COMPRESSION_LOGLUV32) |
| 242 |
SET(C_GAMUT); |
| 243 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
| 244 |
quiterr("cannot handle separate Luv planes"); |
| 245 |
TIFFSetField(cvts.tif, TIFFTAG_LOGLUVDATAFMT, |
| 246 |
LOGLUVDATAFMT_FLTXYZ); |
| 247 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
| 248 |
SAMPLEFORMAT_IEEEFP); |
| 249 |
cvts.tf = Luv2Color; |
| 250 |
break; |
| 251 |
default: |
| 252 |
SET(C_GAMMA|C_GAMUT); |
| 253 |
setcolrgam(cvts.gamcor); |
| 254 |
if (CHK(C_XYZE)) { |
| 255 |
comprgb2xyzmat(cvts.cmat, |
| 256 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
| 257 |
SET(C_CXFM); |
| 258 |
} |
| 259 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
| 260 |
(hi != 1 && hi != 3)) |
| 261 |
quiterr("unsupported samples per pixel"); |
| 262 |
if (hi == 1) { |
| 263 |
SET(C_GRY); |
| 264 |
cvts.pconf = PLANARCONFIG_CONTIG; |
| 265 |
cvts.tf = Gry2Colr; |
| 266 |
} else |
| 267 |
cvts.tf = RGB2Colr; |
| 268 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi) || |
| 269 |
hi != 8) |
| 270 |
quiterr("unsupported bits per sample"); |
| 271 |
break; |
| 272 |
} |
| 273 |
|
| 274 |
if (TIFFGetField(cvts.tif, TIFFTAG_PHOTOMETRIC, &hi) && |
| 275 |
hi != (CHK(C_GRY) ? PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB)) |
| 276 |
quiterr("unsupported photometric interpretation"); |
| 277 |
|
| 278 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) || |
| 279 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax)) |
| 280 |
quiterr("unknown input image resolution"); |
| 281 |
|
| 282 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits)) |
| 283 |
cvts.stonits = 1.; |
| 284 |
/* add to Radiance header */ |
| 285 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01) |
| 286 |
fputaspect(cvts.pixrat, cvts.rfp); |
| 287 |
if (CHK(C_XYZE)) { |
| 288 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp); |
| 289 |
fputformat(CIEFMT, cvts.rfp); |
| 290 |
} else { |
| 291 |
if (CHK(C_PRIM)) |
| 292 |
fputprims(cvts.prims, cvts.rfp); |
| 293 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits, |
| 294 |
cvts.rfp); |
| 295 |
fputformat(COLRFMT, cvts.rfp); |
| 296 |
} |
| 297 |
|
| 298 |
allocbufs(); /* allocate scanline buffers */ |
| 299 |
} |
| 300 |
|
| 301 |
|
| 302 |
tiff2ra(ac, av) /* convert TIFF image to Radiance picture */ |
| 303 |
int ac; |
| 304 |
char *av[]; |
| 305 |
{ |
| 306 |
int32 y; |
| 307 |
/* open TIFF input */ |
| 308 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL) |
| 309 |
quiterr("cannot open TIFF input"); |
| 310 |
/* open Radiance output */ |
| 311 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-")) |
| 312 |
cvts.rfp = stdout; |
| 313 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL) |
| 314 |
quiterr("cannot open Radiance output picture"); |
| 315 |
/* start output header */ |
| 316 |
newheader("RADIANCE", cvts.rfp); |
| 317 |
printargs(ac, av, cvts.rfp); |
| 318 |
|
| 319 |
initfromtif(); /* initialize conversion */ |
| 320 |
|
| 321 |
fputc('\n', cvts.rfp); /* finish Radiance header */ |
| 322 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp); |
| 323 |
|
| 324 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
| 325 |
(*cvts.tf)(y); |
| 326 |
/* clean up */ |
| 327 |
fclose(cvts.rfp); |
| 328 |
TIFFClose(cvts.tif); |
| 329 |
} |
| 330 |
|
| 331 |
|
| 332 |
int |
| 333 |
headline(s) /* process Radiance input header line */ |
| 334 |
char *s; |
| 335 |
{ |
| 336 |
char fmt[32]; |
| 337 |
|
| 338 |
if (formatval(fmt, s)) { |
| 339 |
if (!strcmp(fmt, COLRFMT)) |
| 340 |
CLR(C_XYZE); |
| 341 |
else if (!strcmp(fmt, CIEFMT)) |
| 342 |
SET(C_XYZE); |
| 343 |
else |
| 344 |
quiterr("unrecognized input picture format"); |
| 345 |
return; |
| 346 |
} |
| 347 |
if (isexpos(s)) { |
| 348 |
cvts.stonits /= exposval(s); |
| 349 |
return; |
| 350 |
} |
| 351 |
if (isaspect(s)) { |
| 352 |
cvts.pixrat *= aspectval(s); |
| 353 |
return; |
| 354 |
} |
| 355 |
if (isprims(s)) { |
| 356 |
primsval(cvts.prims, s); |
| 357 |
SET(C_PRIM); |
| 358 |
return; |
| 359 |
} |
| 360 |
} |
| 361 |
|
| 362 |
|
| 363 |
initfromrad() /* initialize input from a Radiance picture */ |
| 364 |
{ |
| 365 |
int i1, i2, po; |
| 366 |
/* read Radiance header */ |
| 367 |
CLR(C_RFLT|C_TFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM); |
| 368 |
cvts.stonits = 1.; |
| 369 |
cvts.pixrat = 1.; |
| 370 |
cvts.pconf = PLANARCONFIG_CONTIG; |
| 371 |
getheader(cvts.rfp, headline, NULL); |
| 372 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0) |
| 373 |
quiterr("bad Radiance picture"); |
| 374 |
cvts.xmax = i1; cvts.ymax = i2; |
| 375 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */ |
| 376 |
if (ortab[i1] == po) { |
| 377 |
cvts.orient = i1 + 1; |
| 378 |
break; |
| 379 |
} |
| 380 |
if (i1 >= 8) |
| 381 |
quiterr("internal error 1 in initfromrad"); |
| 382 |
if (!(po & YMAJOR)) |
| 383 |
cvts.pixrat = 1./cvts.pixrat; |
| 384 |
if (!CHK(C_XYZE)) |
| 385 |
cvts.stonits *= WHTEFFICACY; |
| 386 |
/* set up conversion */ |
| 387 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp); |
| 388 |
|
| 389 |
switch (cvts.comp) { |
| 390 |
case COMPRESSION_LOGL16: |
| 391 |
SET(C_GRY|C_RFLT|C_TFLT); |
| 392 |
TIFFSetField(cvts.tif, TIFFTAG_LOGLUVDATAFMT, |
| 393 |
LOGLUVDATAFMT_FLTY); |
| 394 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
| 395 |
SAMPLEFORMAT_IEEEFP); |
| 396 |
cvts.tf = Color2L; |
| 397 |
break; |
| 398 |
case COMPRESSION_LOGLUV24: |
| 399 |
case COMPRESSION_LOGLUV32: |
| 400 |
SET(C_RFLT|C_TFLT); |
| 401 |
CLR(C_GRY); |
| 402 |
if (!CHK(C_XYZE)) { |
| 403 |
cpcolormat(cvts.cmat, rgb2xyzmat); |
| 404 |
SET(C_CXFM); |
| 405 |
} |
| 406 |
TIFFSetField(cvts.tif, TIFFTAG_LOGLUVDATAFMT, |
| 407 |
LOGLUVDATAFMT_FLTXYZ); |
| 408 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
| 409 |
SAMPLEFORMAT_IEEEFP); |
| 410 |
cvts.tf = Color2Luv; |
| 411 |
break; |
| 412 |
default: |
| 413 |
SET(C_GAMMA|C_GAMUT); |
| 414 |
setcolrgam(cvts.gamcor); |
| 415 |
if (CHK(C_XYZE)) { |
| 416 |
compxyz2rgbmat(cvts.cmat, |
| 417 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
| 418 |
SET(C_CXFM); |
| 419 |
} |
| 420 |
if (CHK(C_GRY)) |
| 421 |
cvts.tf = Colr2Gry; |
| 422 |
else |
| 423 |
cvts.tf = Colr2RGB; |
| 424 |
if (CHK(C_PRIM)) { |
| 425 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, |
| 426 |
(float *)cvts.prims); |
| 427 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT, |
| 428 |
(float *)cvts.prims[WHT]); |
| 429 |
} |
| 430 |
break; |
| 431 |
} |
| 432 |
/* set other TIFF fields */ |
| 433 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax); |
| 434 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax); |
| 435 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3); |
| 436 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, CHK(C_TFLT) ? 32 : 8); |
| 437 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, |
| 438 |
CHK(C_GRY) ? PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB); |
| 439 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.); |
| 440 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat); |
| 441 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient); |
| 442 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2); |
| 443 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf); |
| 444 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS, |
| 445 |
cvts.stonits/pow(2.,(double)cvts.bradj)); |
| 446 |
i1 = TIFFScanlineSize(cvts.tif); |
| 447 |
i2 = 8192/i1; /* compute good strip size */ |
| 448 |
if (i2 < 1) i2 = 1; |
| 449 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2); |
| 450 |
|
| 451 |
allocbufs(); /* allocate scanline buffers */ |
| 452 |
} |
| 453 |
|
| 454 |
|
| 455 |
ra2tiff(ac, av) /* convert Radiance picture to TIFF image */ |
| 456 |
int ac; |
| 457 |
char *av[]; |
| 458 |
{ |
| 459 |
uint32 y; |
| 460 |
/* open Radiance file */ |
| 461 |
if (!strcmp(av[ac], "-")) |
| 462 |
cvts.rfp = stdin; |
| 463 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL) |
| 464 |
quiterr("cannot open Radiance input picture"); |
| 465 |
/* open TIFF file */ |
| 466 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL) |
| 467 |
quiterr("cannot open TIFF output"); |
| 468 |
|
| 469 |
initfromrad(); /* initialize conversion */ |
| 470 |
|
| 471 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
| 472 |
(*cvts.tf)(y); |
| 473 |
/* clean up */ |
| 474 |
TIFFClose(cvts.tif); |
| 475 |
fclose(cvts.rfp); |
| 476 |
} |
| 477 |
|
| 478 |
|
| 479 |
int |
| 480 |
Luv2Color(y) /* read/convert/write Luv->COLOR scanline */ |
| 481 |
uint32 y; |
| 482 |
{ |
| 483 |
register int x; |
| 484 |
|
| 485 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | CHK(C_GRY)) |
| 486 |
quiterr("internal error 1 in Luv2Color"); |
| 487 |
|
| 488 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 489 |
quiterr("error reading TIFF input"); |
| 490 |
|
| 491 |
for (x = cvts.xmax; x--; ) { |
| 492 |
cvts.r.colors[x][RED] = cvts.t.fp[3*x]; |
| 493 |
cvts.r.colors[x][GRN] = cvts.t.fp[3*x + 1]; |
| 494 |
cvts.r.colors[x][BLU] = cvts.t.fp[3*x + 2]; |
| 495 |
if (CHK(C_CXFM)) |
| 496 |
colortrans(cvts.r.colors[x], cvts.cmat, |
| 497 |
cvts.r.colors[x]); |
| 498 |
if (CHK(C_GAMUT)) |
| 499 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
| 500 |
CGAMUT_LOWER, cblack, cwhite); |
| 501 |
} |
| 502 |
if (cvts.bradj) { |
| 503 |
double m = pow(2.,(double)cvts.bradj); |
| 504 |
for (x = cvts.xmax; x--; ) |
| 505 |
scalecolor(cvts.r.colors[x], m); |
| 506 |
} |
| 507 |
|
| 508 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
| 509 |
quiterr("error writing Radiance picture"); |
| 510 |
} |
| 511 |
|
| 512 |
|
| 513 |
int |
| 514 |
L2Color(y) /* read/convert/write L16->COLOR scanline */ |
| 515 |
uint32 y; |
| 516 |
{ |
| 517 |
register int x; |
| 518 |
|
| 519 |
if (CHK(C_RFLT|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
| 520 |
quiterr("internal error 1 in L2Color"); |
| 521 |
|
| 522 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 523 |
quiterr("error reading TIFF input"); |
| 524 |
|
| 525 |
for (x = cvts.xmax; x--; ) |
| 526 |
cvts.r.colors[x][RED] = |
| 527 |
cvts.r.colors[x][GRN] = |
| 528 |
cvts.r.colors[x][BLU] = cvts.t.fp[x] > 0. ? cvts.t.fp[x] : 0.; |
| 529 |
|
| 530 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
| 531 |
quiterr("error writing Radiance picture"); |
| 532 |
} |
| 533 |
|
| 534 |
|
| 535 |
int |
| 536 |
RGB2Colr(y) /* read/convert/write RGB->COLR scanline */ |
| 537 |
uint32 y; |
| 538 |
{ |
| 539 |
COLOR ctmp; |
| 540 |
register int x; |
| 541 |
|
| 542 |
if (CHK(C_RFLT|C_TFLT|C_GRY)) |
| 543 |
quiterr("internal error 1 in RGB2Colr"); |
| 544 |
|
| 545 |
if (cvts.pconf == PLANARCONFIG_CONTIG) { |
| 546 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 547 |
goto readerr; |
| 548 |
for (x = cvts.xmax; x--; ) { |
| 549 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x]; |
| 550 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1]; |
| 551 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2]; |
| 552 |
} |
| 553 |
} else { |
| 554 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 555 |
goto readerr; |
| 556 |
if (TIFFReadScanline(cvts.tif, |
| 557 |
(tidata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0) |
| 558 |
goto readerr; |
| 559 |
if (TIFFReadScanline(cvts.tif, |
| 560 |
(tidata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0) |
| 561 |
goto readerr; |
| 562 |
for (x = cvts.xmax; x--; ) { |
| 563 |
cvts.r.colrs[x][RED] = cvts.t.bp[x]; |
| 564 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x]; |
| 565 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x]; |
| 566 |
} |
| 567 |
} |
| 568 |
|
| 569 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
| 570 |
if (CHK(C_CXFM)) |
| 571 |
for (x = cvts.xmax; x--; ) { |
| 572 |
colr_color(ctmp, cvts.r.colrs[x]); |
| 573 |
colortrans(ctmp, cvts.cmat, ctmp); |
| 574 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */ |
| 575 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER, |
| 576 |
cblack, cwhite); |
| 577 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
| 578 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 579 |
} |
| 580 |
if (cvts.bradj) |
| 581 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
| 582 |
|
| 583 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
| 584 |
quiterr("error writing Radiance picture"); |
| 585 |
return; |
| 586 |
readerr: |
| 587 |
quiterr("error reading TIFF input"); |
| 588 |
} |
| 589 |
|
| 590 |
|
| 591 |
int |
| 592 |
Gry2Colr(y) /* read/convert/write G8->COLR scanline */ |
| 593 |
uint32 y; |
| 594 |
{ |
| 595 |
register int x; |
| 596 |
|
| 597 |
if (CHK(C_RFLT|C_TFLT) | !CHK(C_GRY)) |
| 598 |
quiterr("internal error 1 in Gry2Colr"); |
| 599 |
|
| 600 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 601 |
quiterr("error reading TIFF input"); |
| 602 |
|
| 603 |
for (x = cvts.xmax; x--; ) |
| 604 |
cvts.r.colrs[x][RED] = |
| 605 |
cvts.r.colrs[x][GRN] = |
| 606 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x]; |
| 607 |
|
| 608 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
| 609 |
if (cvts.bradj) |
| 610 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
| 611 |
|
| 612 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
| 613 |
quiterr("error writing Radiance picture"); |
| 614 |
} |
| 615 |
|
| 616 |
|
| 617 |
int |
| 618 |
Color2L(y) /* read/convert/write COLOR->L16 scanline */ |
| 619 |
uint32 y; |
| 620 |
{ |
| 621 |
double m = pow(2.,(double)cvts.bradj); |
| 622 |
register int x; |
| 623 |
|
| 624 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | !CHK(C_GRY)) |
| 625 |
quiterr("internal error 1 in Color2L"); |
| 626 |
|
| 627 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
| 628 |
quiterr("error reading Radiance picture"); |
| 629 |
|
| 630 |
for (x = cvts.xmax; x--; ) |
| 631 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY) |
| 632 |
: bright(cvts.r.colors[x]) ); |
| 633 |
|
| 634 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 635 |
quiterr("error writing TIFF output"); |
| 636 |
} |
| 637 |
|
| 638 |
|
| 639 |
int |
| 640 |
Color2Luv(y) /* read/convert/write COLOR->Luv scanline */ |
| 641 |
uint32 y; |
| 642 |
{ |
| 643 |
register int x; |
| 644 |
|
| 645 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | CHK(C_GRY)) |
| 646 |
quiterr("internal error 1 in Color2Luv"); |
| 647 |
|
| 648 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
| 649 |
quiterr("error reading Radiance picture"); |
| 650 |
|
| 651 |
if (CHK(C_CXFM)) |
| 652 |
for (x = cvts.xmax; x--; ) |
| 653 |
colortrans(cvts.r.colors[x], cvts.cmat, |
| 654 |
cvts.r.colors[x]); |
| 655 |
if (cvts.bradj) { |
| 656 |
double m = pow(2.,(double)cvts.bradj); |
| 657 |
for (x = cvts.xmax; x--; ) |
| 658 |
scalecolor(cvts.r.colors[x], m); |
| 659 |
} |
| 660 |
|
| 661 |
for (x = cvts.xmax; x--; ) { |
| 662 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],RED); |
| 663 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],GRN); |
| 664 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],BLU); |
| 665 |
} |
| 666 |
|
| 667 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 668 |
quiterr("error writing TIFF output"); |
| 669 |
} |
| 670 |
|
| 671 |
|
| 672 |
int |
| 673 |
Colr2Gry(y) /* read/convert/write COLR->RGB scanline */ |
| 674 |
uint32 y; |
| 675 |
{ |
| 676 |
register int x; |
| 677 |
|
| 678 |
if (CHK(C_RFLT|C_TFLT) | !CHK(C_GRY)) |
| 679 |
quiterr("internal error 1 in Colr2Gry"); |
| 680 |
|
| 681 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
| 682 |
quiterr("error reading Radiance picture"); |
| 683 |
|
| 684 |
if (cvts.bradj) |
| 685 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
| 686 |
for (x = cvts.xmax; x--; ) |
| 687 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]); |
| 688 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
| 689 |
|
| 690 |
for (x = cvts.xmax; x--; ) |
| 691 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY); |
| 692 |
|
| 693 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 694 |
quiterr("error writing TIFF output"); |
| 695 |
} |
| 696 |
|
| 697 |
|
| 698 |
int |
| 699 |
Colr2RGB(y) /* read/convert/write COLR->RGB scanline */ |
| 700 |
uint32 y; |
| 701 |
{ |
| 702 |
COLOR ctmp; |
| 703 |
register int x; |
| 704 |
|
| 705 |
if (CHK(C_RFLT|C_TFLT|C_GRY)) |
| 706 |
quiterr("internal error 1 in Colr2RGB"); |
| 707 |
|
| 708 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
| 709 |
quiterr("error reading Radiance picture"); |
| 710 |
|
| 711 |
if (cvts.bradj) |
| 712 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
| 713 |
if (CHK(C_CXFM)) |
| 714 |
for (x = cvts.xmax; x--; ) { |
| 715 |
colr_color(ctmp, cvts.r.colrs[x]); |
| 716 |
colortrans(ctmp, cvts.cmat, ctmp); |
| 717 |
if (CHK(C_GAMUT)) |
| 718 |
clipgamut(ctmp, bright(ctmp), CGAMUT, |
| 719 |
cblack, cwhite); |
| 720 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
| 721 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
| 722 |
} |
| 723 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
| 724 |
|
| 725 |
for (x = cvts.xmax; x--; ) { |
| 726 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED]; |
| 727 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN]; |
| 728 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU]; |
| 729 |
} |
| 730 |
|
| 731 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
| 732 |
quiterr("error writing TIFF output"); |
| 733 |
} |
