| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: ra_tiff.c,v 2.35 2018/08/02 18:33:47 greg Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* Program to convert between RADIANCE and TIFF files.
|
| 6 |
* Added LogLuv encodings 7/97 (GWL).
|
| 7 |
* Added white-balance adjustment 10/01 (GW).
|
| 8 |
*/
|
| 9 |
|
| 10 |
#include <math.h>
|
| 11 |
#include <ctype.h>
|
| 12 |
|
| 13 |
#include "rtio.h"
|
| 14 |
#include "platform.h"
|
| 15 |
#include "tiffio.h"
|
| 16 |
#include "color.h"
|
| 17 |
#include "resolu.h"
|
| 18 |
|
| 19 |
#define GAMCOR 2.2 /* default gamma */
|
| 20 |
|
| 21 |
/* conversion flags */
|
| 22 |
#define C_CXFM 0x1 /* needs color transformation */
|
| 23 |
#define C_GAMUT 0x2 /* needs gamut mapping */
|
| 24 |
#define C_GAMMA 0x4 /* needs gamma correction */
|
| 25 |
#define C_GRY 0x8 /* TIFF is greyscale */
|
| 26 |
#define C_XYZE 0x10 /* Radiance is XYZE */
|
| 27 |
#define C_RFLT 0x20 /* Radiance data is float */
|
| 28 |
#define C_TFLT 0x40 /* TIFF data is float */
|
| 29 |
#define C_TWRD 0x80 /* TIFF data is 16-bit */
|
| 30 |
#define C_PRIM 0x100 /* has assigned primaries */
|
| 31 |
|
| 32 |
typedef void colcvf_t(uint32 y);
|
| 33 |
|
| 34 |
struct {
|
| 35 |
uint16 flags; /* conversion flags (defined above) */
|
| 36 |
char capdate[20]; /* capture date/time */
|
| 37 |
char owner[256]; /* content owner */
|
| 38 |
uint16 comp; /* TIFF compression type */
|
| 39 |
uint16 phot; /* TIFF photometric type */
|
| 40 |
uint16 pconf; /* TIFF planar configuration */
|
| 41 |
float gamcor; /* gamma correction value */
|
| 42 |
short bradj; /* Radiance exposure adjustment (stops) */
|
| 43 |
uint16 orient; /* visual orientation (TIFF spec.) */
|
| 44 |
double stonits; /* input conversion to nits */
|
| 45 |
float pixrat; /* pixel aspect ratio */
|
| 46 |
FILE *rfp; /* Radiance stream pointer */
|
| 47 |
TIFF *tif; /* TIFF pointer */
|
| 48 |
uint32 xmax, ymax; /* image dimensions */
|
| 49 |
COLORMAT cmat; /* color transformation matrix */
|
| 50 |
RGBPRIMS prims; /* RGB primaries */
|
| 51 |
union {
|
| 52 |
COLR *colrs; /* 4-byte ???E pointer */
|
| 53 |
COLOR *colors; /* float array pointer */
|
| 54 |
char *p; /* generic pointer */
|
| 55 |
} r; /* Radiance scanline */
|
| 56 |
union {
|
| 57 |
uint8 *bp; /* byte pointer */
|
| 58 |
uint16 *wp; /* word pointer */
|
| 59 |
float *fp; /* float pointer */
|
| 60 |
char *p; /* generic pointer */
|
| 61 |
} t; /* TIFF scanline */
|
| 62 |
colcvf_t *tf; /* translation procedure */
|
| 63 |
} cvts = { /* conversion structure */
|
| 64 |
0, "", "", COMPRESSION_NONE, PHOTOMETRIC_RGB,
|
| 65 |
PLANARCONFIG_CONTIG, GAMCOR, 0, 1, 1., 1.,
|
| 66 |
};
|
| 67 |
|
| 68 |
#define CHK(f) (cvts.flags & (f))
|
| 69 |
#define SET(f) (cvts.flags |= (f))
|
| 70 |
#define CLR(f) (cvts.flags &= ~(f))
|
| 71 |
#define TGL(f) (cvts.flags ^= (f))
|
| 72 |
|
| 73 |
static colcvf_t Luv2Color, L2Color, RGB2Colr, Gry2Colr;
|
| 74 |
static colcvf_t Color2Luv, Color2L, Colr2RGB, Colr2Gry;
|
| 75 |
static colcvf_t RRGGBB2Color, GGry2Color, Color2RRGGBB, Color2GGry;
|
| 76 |
|
| 77 |
static gethfunc headline;
|
| 78 |
static void quiterr(char *err);
|
| 79 |
static void allocbufs(void);
|
| 80 |
static void initfromtif(void);
|
| 81 |
static void tiff2ra(int ac, char *av[]);
|
| 82 |
static void initfromrad(void);
|
| 83 |
static void ra2tiff(int ac, char *av[]);
|
| 84 |
|
| 85 |
|
| 86 |
|
| 87 |
#define RfGfBf2Color Luv2Color
|
| 88 |
#define Gryf2Color L2Color
|
| 89 |
#define Color2Gryf Color2L
|
| 90 |
#define Color2RfGfBf Color2Luv
|
| 91 |
|
| 92 |
short ortab[8] = { /* orientation conversion table */
|
| 93 |
YMAJOR|YDECR,
|
| 94 |
YMAJOR|YDECR|XDECR,
|
| 95 |
YMAJOR|XDECR,
|
| 96 |
YMAJOR,
|
| 97 |
YDECR,
|
| 98 |
XDECR|YDECR,
|
| 99 |
XDECR,
|
| 100 |
0
|
| 101 |
};
|
| 102 |
|
| 103 |
#define pixorder() ortab[cvts.orient-1]
|
| 104 |
|
| 105 |
extern char TMSTR[]; /* "CAPDATE=" from header.c */
|
| 106 |
char OWNSTR[] = "OWNER=";
|
| 107 |
|
| 108 |
char *progname;
|
| 109 |
|
| 110 |
|
| 111 |
int
|
| 112 |
main(int argc, char *argv[])
|
| 113 |
{
|
| 114 |
int reverse = 0;
|
| 115 |
int i;
|
| 116 |
|
| 117 |
progname = argv[0];
|
| 118 |
|
| 119 |
for (i = 1; i < argc; i++)
|
| 120 |
if (argv[i][0] == '-')
|
| 121 |
switch (argv[i][1]) {
|
| 122 |
case 'g': /* gamma correction */
|
| 123 |
cvts.gamcor = atof(argv[++i]);
|
| 124 |
break;
|
| 125 |
case 'x': /* XYZE Radiance output */
|
| 126 |
TGL(C_XYZE);
|
| 127 |
break;
|
| 128 |
case 'z': /* LZW compressed output */
|
| 129 |
cvts.comp = COMPRESSION_LZW;
|
| 130 |
break;
|
| 131 |
case 'L': /* LogLuv 32-bit output */
|
| 132 |
cvts.comp = COMPRESSION_SGILOG;
|
| 133 |
cvts.phot = PHOTOMETRIC_LOGLUV;
|
| 134 |
break;
|
| 135 |
case 'l': /* LogLuv 24-bit output */
|
| 136 |
cvts.comp = COMPRESSION_SGILOG24;
|
| 137 |
cvts.phot = PHOTOMETRIC_LOGLUV;
|
| 138 |
break;
|
| 139 |
case 'w': /* 16-bit/primary output? */
|
| 140 |
TGL(C_TWRD);
|
| 141 |
break;
|
| 142 |
case 'f': /* IEEE float output? */
|
| 143 |
TGL(C_TFLT);
|
| 144 |
break;
|
| 145 |
case 'b': /* greyscale output? */
|
| 146 |
TGL(C_GRY);
|
| 147 |
break;
|
| 148 |
case 'e': /* exposure adjustment */
|
| 149 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
|
| 150 |
goto userr;
|
| 151 |
cvts.bradj = atoi(argv[++i]);
|
| 152 |
break;
|
| 153 |
case 'r': /* reverse conversion? */
|
| 154 |
reverse = !reverse;
|
| 155 |
break;
|
| 156 |
case '\0':
|
| 157 |
goto doneopts;
|
| 158 |
default:
|
| 159 |
goto userr;
|
| 160 |
}
|
| 161 |
else
|
| 162 |
break;
|
| 163 |
doneopts:
|
| 164 |
if (reverse) {
|
| 165 |
|
| 166 |
if (i != argc-2 && i != argc-1)
|
| 167 |
goto userr;
|
| 168 |
|
| 169 |
tiff2ra(i, argv);
|
| 170 |
|
| 171 |
} else {
|
| 172 |
|
| 173 |
if (i != argc-2)
|
| 174 |
goto userr;
|
| 175 |
/* consistency checks */
|
| 176 |
if (CHK(C_GRY)) {
|
| 177 |
if (cvts.phot == PHOTOMETRIC_RGB)
|
| 178 |
cvts.phot = PHOTOMETRIC_MINISBLACK;
|
| 179 |
else {
|
| 180 |
cvts.phot = PHOTOMETRIC_LOGL;
|
| 181 |
cvts.comp = COMPRESSION_SGILOG;
|
| 182 |
}
|
| 183 |
}
|
| 184 |
if (CHK(C_TWRD|C_TFLT) == (C_TWRD|C_TFLT))
|
| 185 |
goto userr;
|
| 186 |
|
| 187 |
ra2tiff(i, argv);
|
| 188 |
}
|
| 189 |
|
| 190 |
exit(0);
|
| 191 |
userr:
|
| 192 |
fprintf(stderr,
|
| 193 |
"Usage: %s [-z|-L|-l|-f|-w][-b][-e +/-stops][-g gamma] {in.hdr|-} out.tif\n",
|
| 194 |
progname);
|
| 195 |
fprintf(stderr,
|
| 196 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.hdr|-]\n",
|
| 197 |
progname);
|
| 198 |
exit(1);
|
| 199 |
}
|
| 200 |
|
| 201 |
|
| 202 |
static void
|
| 203 |
quiterr( /* print message and exit */
|
| 204 |
char *err
|
| 205 |
)
|
| 206 |
{
|
| 207 |
if (err != NULL) {
|
| 208 |
fprintf(stderr, "%s: %s\n", progname, err);
|
| 209 |
exit(1);
|
| 210 |
}
|
| 211 |
exit(0);
|
| 212 |
}
|
| 213 |
|
| 214 |
|
| 215 |
static void
|
| 216 |
allocbufs(void) /* allocate scanline buffers */
|
| 217 |
{
|
| 218 |
int rsiz, tsiz;
|
| 219 |
|
| 220 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR);
|
| 221 |
tsiz = (CHK(C_TFLT) ? sizeof(float) :
|
| 222 |
CHK(C_TWRD) ? sizeof(uint16) : sizeof(uint8)) *
|
| 223 |
(CHK(C_GRY) ? 1 : 3);
|
| 224 |
cvts.r.p = (char *)malloc(rsiz*cvts.xmax);
|
| 225 |
cvts.t.p = (char *)malloc(tsiz*cvts.xmax);
|
| 226 |
if ((cvts.r.p == NULL) | (cvts.t.p == NULL))
|
| 227 |
quiterr("no memory to allocate scanline buffers");
|
| 228 |
}
|
| 229 |
|
| 230 |
|
| 231 |
static void
|
| 232 |
initfromtif(void) /* initialize conversion from TIFF input */
|
| 233 |
{
|
| 234 |
uint16 hi;
|
| 235 |
char *cp;
|
| 236 |
float *fa, f1, f2;
|
| 237 |
|
| 238 |
CLR(C_GRY|C_GAMMA|C_PRIM|C_RFLT|C_TFLT|C_TWRD|C_CXFM);
|
| 239 |
|
| 240 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PLANARCONFIG, &cvts.pconf);
|
| 241 |
|
| 242 |
if (TIFFGetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) {
|
| 243 |
cvts.prims[RED][CIEX] = fa[0];
|
| 244 |
cvts.prims[RED][CIEY] = fa[1];
|
| 245 |
cvts.prims[GRN][CIEX] = fa[2];
|
| 246 |
cvts.prims[GRN][CIEY] = fa[3];
|
| 247 |
cvts.prims[BLU][CIEX] = fa[4];
|
| 248 |
cvts.prims[BLU][CIEY] = fa[5];
|
| 249 |
cvts.prims[WHT][CIEX] = 1./3.;
|
| 250 |
cvts.prims[WHT][CIEY] = 1./3.;
|
| 251 |
if (TIFFGetField(cvts.tif, TIFFTAG_WHITEPOINT, &fa)) {
|
| 252 |
cvts.prims[WHT][CIEX] = fa[0];
|
| 253 |
cvts.prims[WHT][CIEY] = fa[1];
|
| 254 |
}
|
| 255 |
SET(C_PRIM);
|
| 256 |
}
|
| 257 |
|
| 258 |
if (!TIFFGetField(cvts.tif, TIFFTAG_COMPRESSION, &cvts.comp))
|
| 259 |
cvts.comp = COMPRESSION_NONE;
|
| 260 |
|
| 261 |
if (TIFFGetField(cvts.tif, TIFFTAG_XRESOLUTION, &f1) &&
|
| 262 |
TIFFGetField(cvts.tif, TIFFTAG_YRESOLUTION, &f2))
|
| 263 |
cvts.pixrat = f1/f2;
|
| 264 |
|
| 265 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_ORIENTATION, &cvts.orient);
|
| 266 |
|
| 267 |
if (!TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PHOTOMETRIC, &cvts.phot))
|
| 268 |
quiterr("TIFF has unspecified photometric type");
|
| 269 |
|
| 270 |
switch (cvts.phot) {
|
| 271 |
case PHOTOMETRIC_LOGLUV:
|
| 272 |
SET(C_RFLT|C_TFLT);
|
| 273 |
if (!CHK(C_XYZE)) {
|
| 274 |
cpcolormat(cvts.cmat, xyz2rgbmat);
|
| 275 |
SET(C_CXFM|C_GAMUT);
|
| 276 |
} else if (cvts.comp == COMPRESSION_SGILOG)
|
| 277 |
SET(C_GAMUT); /* may be outside XYZ gamut */
|
| 278 |
if (cvts.pconf != PLANARCONFIG_CONTIG)
|
| 279 |
quiterr("cannot handle separate Luv planes");
|
| 280 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT,
|
| 281 |
SGILOGDATAFMT_FLOAT);
|
| 282 |
cvts.tf = Luv2Color;
|
| 283 |
break;
|
| 284 |
case PHOTOMETRIC_LOGL:
|
| 285 |
SET(C_GRY|C_RFLT|C_TFLT|C_GAMUT);
|
| 286 |
cvts.pconf = PLANARCONFIG_CONTIG;
|
| 287 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT,
|
| 288 |
SGILOGDATAFMT_FLOAT);
|
| 289 |
cvts.tf = L2Color;
|
| 290 |
break;
|
| 291 |
case PHOTOMETRIC_YCBCR:
|
| 292 |
if (cvts.comp == COMPRESSION_JPEG &&
|
| 293 |
cvts.pconf == PLANARCONFIG_CONTIG) {
|
| 294 |
TIFFSetField(cvts.tif, TIFFTAG_JPEGCOLORMODE,
|
| 295 |
JPEGCOLORMODE_RGB);
|
| 296 |
cvts.phot = PHOTOMETRIC_RGB;
|
| 297 |
} else
|
| 298 |
quiterr("unsupported photometric type");
|
| 299 |
/* fall through */
|
| 300 |
case PHOTOMETRIC_RGB:
|
| 301 |
SET(C_GAMMA);
|
| 302 |
setcolrgam(cvts.gamcor);
|
| 303 |
if (CHK(C_XYZE)) {
|
| 304 |
comprgb2xyzWBmat(cvts.cmat,
|
| 305 |
CHK(C_PRIM) ? cvts.prims : stdprims);
|
| 306 |
SET(C_CXFM);
|
| 307 |
}
|
| 308 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) ||
|
| 309 |
hi != 3)
|
| 310 |
quiterr("unsupported samples per pixel for RGB");
|
| 311 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi))
|
| 312 |
hi = -1;
|
| 313 |
switch (hi) {
|
| 314 |
case 8:
|
| 315 |
cvts.tf = RGB2Colr;
|
| 316 |
break;
|
| 317 |
case 16:
|
| 318 |
cvts.tf = RRGGBB2Color;
|
| 319 |
SET(C_RFLT|C_TWRD);
|
| 320 |
break;
|
| 321 |
case 32:
|
| 322 |
cvts.tf = RfGfBf2Color;
|
| 323 |
SET(C_RFLT|C_TFLT);
|
| 324 |
break;
|
| 325 |
default:
|
| 326 |
quiterr("unsupported bits per sample for RGB");
|
| 327 |
}
|
| 328 |
break;
|
| 329 |
case PHOTOMETRIC_MINISBLACK:
|
| 330 |
SET(C_GRY|C_GAMMA);
|
| 331 |
setcolrgam(cvts.gamcor);
|
| 332 |
cvts.pconf = PLANARCONFIG_CONTIG;
|
| 333 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) ||
|
| 334 |
hi != 1)
|
| 335 |
quiterr("unsupported samples per pixel for greyscale");
|
| 336 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi))
|
| 337 |
hi = -1;
|
| 338 |
switch (hi) {
|
| 339 |
case 8:
|
| 340 |
cvts.tf = Gry2Colr;
|
| 341 |
break;
|
| 342 |
case 16:
|
| 343 |
cvts.tf = GGry2Color;
|
| 344 |
SET(C_RFLT|C_TWRD);
|
| 345 |
break;
|
| 346 |
case 32:
|
| 347 |
cvts.tf = Gryf2Color;
|
| 348 |
SET(C_RFLT|C_TFLT);
|
| 349 |
break;
|
| 350 |
default:
|
| 351 |
quiterr("unsupported bits per sample for Gray");
|
| 352 |
}
|
| 353 |
break;
|
| 354 |
default:
|
| 355 |
quiterr("unsupported photometric type");
|
| 356 |
break;
|
| 357 |
}
|
| 358 |
|
| 359 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) ||
|
| 360 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax))
|
| 361 |
quiterr("unknown input image resolution");
|
| 362 |
|
| 363 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits))
|
| 364 |
cvts.stonits = -1.;
|
| 365 |
|
| 366 |
if (!TIFFGetField(cvts.tif, TIFFTAG_DATETIME, &cp))
|
| 367 |
cvts.capdate[0] = '\0';
|
| 368 |
else {
|
| 369 |
strncpy(cvts.capdate, cp, 19);
|
| 370 |
cvts.capdate[19] = '\0';
|
| 371 |
}
|
| 372 |
if (!TIFFGetField(cvts.tif, TIFFTAG_ARTIST, &cp))
|
| 373 |
cvts.owner[0] = '\0';
|
| 374 |
else {
|
| 375 |
strncpy(cvts.owner, cp, sizeof(cvts.owner));
|
| 376 |
cvts.owner[sizeof(cvts.owner)-1] = '\0';
|
| 377 |
}
|
| 378 |
/* add to Radiance header */
|
| 379 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01)
|
| 380 |
fputaspect(cvts.pixrat, cvts.rfp);
|
| 381 |
if (CHK(C_XYZE)) {
|
| 382 |
if (cvts.stonits > .0)
|
| 383 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp);
|
| 384 |
fputformat(CIEFMT, cvts.rfp);
|
| 385 |
} else {
|
| 386 |
if (CHK(C_PRIM))
|
| 387 |
fputprims(cvts.prims, cvts.rfp);
|
| 388 |
if (cvts.stonits > .0)
|
| 389 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits,
|
| 390 |
cvts.rfp);
|
| 391 |
fputformat(COLRFMT, cvts.rfp);
|
| 392 |
}
|
| 393 |
if (cvts.capdate[0])
|
| 394 |
fprintf(cvts.rfp, "%s %s\n", TMSTR, cvts.capdate);
|
| 395 |
if (cvts.owner[0])
|
| 396 |
fprintf(cvts.rfp, "%s %s\n", OWNSTR, cvts.owner);
|
| 397 |
|
| 398 |
allocbufs(); /* allocate scanline buffers */
|
| 399 |
}
|
| 400 |
|
| 401 |
|
| 402 |
static void
|
| 403 |
tiff2ra( /* convert TIFF image to Radiance picture */
|
| 404 |
int ac,
|
| 405 |
char *av[]
|
| 406 |
)
|
| 407 |
{
|
| 408 |
int32 y;
|
| 409 |
/* open TIFF input */
|
| 410 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL)
|
| 411 |
quiterr("cannot open TIFF input");
|
| 412 |
/* open Radiance output */
|
| 413 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-"))
|
| 414 |
cvts.rfp = stdout;
|
| 415 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL)
|
| 416 |
quiterr("cannot open Radiance output picture");
|
| 417 |
SET_FILE_BINARY(cvts.rfp);
|
| 418 |
/* start output header */
|
| 419 |
newheader("RADIANCE", cvts.rfp);
|
| 420 |
printargs(ac, av, cvts.rfp);
|
| 421 |
|
| 422 |
initfromtif(); /* initialize conversion */
|
| 423 |
|
| 424 |
fputc('\n', cvts.rfp); /* finish Radiance header */
|
| 425 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp);
|
| 426 |
|
| 427 |
for (y = 0; y < cvts.ymax; y++) /* convert image */
|
| 428 |
(*cvts.tf)(y);
|
| 429 |
/* clean up */
|
| 430 |
fclose(cvts.rfp);
|
| 431 |
TIFFClose(cvts.tif);
|
| 432 |
}
|
| 433 |
|
| 434 |
|
| 435 |
static int
|
| 436 |
headline( /* process Radiance input header line */
|
| 437 |
char *s,
|
| 438 |
void *p
|
| 439 |
)
|
| 440 |
{
|
| 441 |
static int tmstrlen = 0;
|
| 442 |
static int ownstrlen = 0;
|
| 443 |
char fmt[MAXFMTLEN];
|
| 444 |
|
| 445 |
if (!tmstrlen)
|
| 446 |
tmstrlen = strlen(TMSTR);
|
| 447 |
if (!ownstrlen)
|
| 448 |
ownstrlen = strlen(OWNSTR);
|
| 449 |
if (formatval(fmt, s)) {
|
| 450 |
if (!strcmp(fmt, COLRFMT))
|
| 451 |
CLR(C_XYZE);
|
| 452 |
else if (!strcmp(fmt, CIEFMT))
|
| 453 |
SET(C_XYZE);
|
| 454 |
else
|
| 455 |
quiterr("unrecognized input picture format");
|
| 456 |
return(1);
|
| 457 |
}
|
| 458 |
if (isexpos(s)) {
|
| 459 |
cvts.stonits /= exposval(s);
|
| 460 |
return(1);
|
| 461 |
}
|
| 462 |
if (isaspect(s)) {
|
| 463 |
cvts.pixrat *= aspectval(s);
|
| 464 |
return(1);
|
| 465 |
}
|
| 466 |
if (isprims(s)) {
|
| 467 |
primsval(cvts.prims, s);
|
| 468 |
SET(C_PRIM);
|
| 469 |
return(1);
|
| 470 |
}
|
| 471 |
if (isdate(s)) {
|
| 472 |
if (s[tmstrlen] == ' ')
|
| 473 |
strncpy(cvts.capdate, s+tmstrlen+1, 19);
|
| 474 |
else
|
| 475 |
strncpy(cvts.capdate, s+tmstrlen, 19);
|
| 476 |
cvts.capdate[19] = '\0';
|
| 477 |
return(1);
|
| 478 |
}
|
| 479 |
if (!strncmp(s, OWNSTR, ownstrlen)) {
|
| 480 |
register char *cp = s + ownstrlen;
|
| 481 |
|
| 482 |
while (isspace(*cp))
|
| 483 |
++cp;
|
| 484 |
strncpy(cvts.owner, cp, sizeof(cvts.owner));
|
| 485 |
cvts.owner[sizeof(cvts.owner)-1] = '\0';
|
| 486 |
for (cp = cvts.owner; *cp; cp++)
|
| 487 |
;
|
| 488 |
while (cp > cvts.owner && isspace(cp[-1]))
|
| 489 |
*--cp = '\0';
|
| 490 |
return(1);
|
| 491 |
}
|
| 492 |
return(0);
|
| 493 |
}
|
| 494 |
|
| 495 |
|
| 496 |
static void
|
| 497 |
initfromrad(void) /* initialize input from a Radiance picture */
|
| 498 |
{
|
| 499 |
int i1, i2, po;
|
| 500 |
/* read Radiance header */
|
| 501 |
CLR(C_RFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM);
|
| 502 |
cvts.capdate[0] = '\0';
|
| 503 |
cvts.owner[0] = '\0';
|
| 504 |
cvts.stonits = 1.;
|
| 505 |
cvts.pixrat = 1.;
|
| 506 |
cvts.pconf = PLANARCONFIG_CONTIG;
|
| 507 |
getheader(cvts.rfp, headline, NULL);
|
| 508 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0)
|
| 509 |
quiterr("bad Radiance picture");
|
| 510 |
cvts.xmax = i1; cvts.ymax = i2;
|
| 511 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */
|
| 512 |
if (ortab[i1] == po) {
|
| 513 |
cvts.orient = i1 + 1;
|
| 514 |
break;
|
| 515 |
}
|
| 516 |
if (i1 >= 8)
|
| 517 |
quiterr("internal error 1 in initfromrad");
|
| 518 |
if (!(po & YMAJOR))
|
| 519 |
cvts.pixrat = 1./cvts.pixrat;
|
| 520 |
if (!CHK(C_XYZE))
|
| 521 |
cvts.stonits *= WHTEFFICACY;
|
| 522 |
/* set up conversion */
|
| 523 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp);
|
| 524 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, cvts.phot);
|
| 525 |
|
| 526 |
switch (cvts.phot) {
|
| 527 |
case PHOTOMETRIC_LOGLUV:
|
| 528 |
SET(C_RFLT|C_TFLT);
|
| 529 |
CLR(C_GRY|C_TWRD);
|
| 530 |
if (!CHK(C_XYZE)) {
|
| 531 |
comprgb2xyzWBmat(cvts.cmat,
|
| 532 |
CHK(C_PRIM) ? cvts.prims : stdprims);
|
| 533 |
SET(C_CXFM);
|
| 534 |
}
|
| 535 |
if (cvts.comp != COMPRESSION_SGILOG &&
|
| 536 |
cvts.comp != COMPRESSION_SGILOG24)
|
| 537 |
quiterr("internal error 2 in initfromrad");
|
| 538 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT,
|
| 539 |
SGILOGDATAFMT_FLOAT);
|
| 540 |
cvts.tf = Color2Luv;
|
| 541 |
break;
|
| 542 |
case PHOTOMETRIC_LOGL:
|
| 543 |
SET(C_GRY|C_RFLT|C_TFLT);
|
| 544 |
CLR(C_TWRD);
|
| 545 |
if (cvts.comp != COMPRESSION_SGILOG)
|
| 546 |
quiterr("internal error 3 in initfromrad");
|
| 547 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT,
|
| 548 |
SGILOGDATAFMT_FLOAT);
|
| 549 |
cvts.tf = Color2L;
|
| 550 |
break;
|
| 551 |
case PHOTOMETRIC_RGB:
|
| 552 |
SET(C_GAMMA|C_GAMUT);
|
| 553 |
CLR(C_GRY);
|
| 554 |
setcolrgam(cvts.gamcor);
|
| 555 |
if (CHK(C_XYZE)) {
|
| 556 |
compxyz2rgbWBmat(cvts.cmat,
|
| 557 |
CHK(C_PRIM) ? cvts.prims : stdprims);
|
| 558 |
SET(C_CXFM);
|
| 559 |
}
|
| 560 |
if (CHK(C_PRIM)) {
|
| 561 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES,
|
| 562 |
(float *)cvts.prims);
|
| 563 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT,
|
| 564 |
(float *)cvts.prims[WHT]);
|
| 565 |
}
|
| 566 |
if (CHK(C_TWRD)) {
|
| 567 |
cvts.tf = Color2RRGGBB;
|
| 568 |
SET(C_RFLT);
|
| 569 |
} else if (CHK(C_TFLT)) {
|
| 570 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT,
|
| 571 |
SAMPLEFORMAT_IEEEFP);
|
| 572 |
cvts.tf = Color2RfGfBf;
|
| 573 |
SET(C_RFLT);
|
| 574 |
CLR(C_GAMUT);
|
| 575 |
} else
|
| 576 |
cvts.tf = Colr2RGB;
|
| 577 |
break;
|
| 578 |
case PHOTOMETRIC_MINISBLACK:
|
| 579 |
SET(C_GRY|C_GAMMA|C_GAMUT);
|
| 580 |
setcolrgam(cvts.gamcor);
|
| 581 |
if (CHK(C_TWRD)) {
|
| 582 |
cvts.tf = Color2GGry;
|
| 583 |
SET(C_RFLT);
|
| 584 |
} else if (CHK(C_TFLT)) {
|
| 585 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT,
|
| 586 |
SAMPLEFORMAT_IEEEFP);
|
| 587 |
cvts.tf = Color2Gryf;
|
| 588 |
SET(C_RFLT);
|
| 589 |
} else
|
| 590 |
cvts.tf = Colr2Gry;
|
| 591 |
break;
|
| 592 |
default:
|
| 593 |
quiterr("internal error 4 in initfromrad");
|
| 594 |
break;
|
| 595 |
}
|
| 596 |
/* set other TIFF fields */
|
| 597 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax);
|
| 598 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax);
|
| 599 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3);
|
| 600 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE,
|
| 601 |
CHK(C_TFLT) ? 32 : CHK(C_TWRD) ? 16 : 8);
|
| 602 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.);
|
| 603 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat);
|
| 604 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient);
|
| 605 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2);
|
| 606 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf);
|
| 607 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS,
|
| 608 |
cvts.stonits/pow(2.,(double)cvts.bradj));
|
| 609 |
if (cvts.capdate[0])
|
| 610 |
TIFFSetField(cvts.tif, TIFFTAG_DATETIME, cvts.capdate);
|
| 611 |
if (cvts.owner[0])
|
| 612 |
TIFFSetField(cvts.tif, TIFFTAG_ARTIST, cvts.owner);
|
| 613 |
if (cvts.comp == COMPRESSION_NONE)
|
| 614 |
i1 = TIFFScanlineSize(cvts.tif);
|
| 615 |
else
|
| 616 |
i1 = 3*cvts.xmax; /* conservative guess */
|
| 617 |
i2 = 8192/i1; /* compute good strip size */
|
| 618 |
if (i2 < 1) i2 = 1;
|
| 619 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2);
|
| 620 |
|
| 621 |
allocbufs(); /* allocate scanline buffers */
|
| 622 |
}
|
| 623 |
|
| 624 |
|
| 625 |
static void
|
| 626 |
ra2tiff( /* convert Radiance picture to TIFF image */
|
| 627 |
int ac,
|
| 628 |
char *av[]
|
| 629 |
)
|
| 630 |
{
|
| 631 |
uint32 y;
|
| 632 |
/* open Radiance file */
|
| 633 |
if (!strcmp(av[ac], "-"))
|
| 634 |
cvts.rfp = stdin;
|
| 635 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL)
|
| 636 |
quiterr("cannot open Radiance input picture");
|
| 637 |
SET_FILE_BINARY(cvts.rfp);
|
| 638 |
/* open TIFF file */
|
| 639 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL)
|
| 640 |
quiterr("cannot open TIFF output");
|
| 641 |
|
| 642 |
initfromrad(); /* initialize conversion */
|
| 643 |
|
| 644 |
for (y = 0; y < cvts.ymax; y++) /* convert image */
|
| 645 |
(*cvts.tf)(y);
|
| 646 |
/* clean up */
|
| 647 |
TIFFClose(cvts.tif);
|
| 648 |
fclose(cvts.rfp);
|
| 649 |
}
|
| 650 |
|
| 651 |
|
| 652 |
static void
|
| 653 |
Luv2Color( /* read/convert/write Luv->COLOR scanline */
|
| 654 |
uint32 y
|
| 655 |
)
|
| 656 |
{
|
| 657 |
register int x;
|
| 658 |
|
| 659 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT))
|
| 660 |
quiterr("internal error 1 in Luv2Color");
|
| 661 |
|
| 662 |
if (cvts.pconf != PLANARCONFIG_CONTIG)
|
| 663 |
quiterr("cannot handle separate 32-bit color planes");
|
| 664 |
|
| 665 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 666 |
quiterr("error reading TIFF input");
|
| 667 |
/* also works for float RGB */
|
| 668 |
for (x = cvts.xmax; x--; ) {
|
| 669 |
setcolor(cvts.r.colors[x],
|
| 670 |
cvts.t.fp[3*x],
|
| 671 |
cvts.t.fp[3*x + 1],
|
| 672 |
cvts.t.fp[3*x + 2]);
|
| 673 |
if (CHK(C_CXFM))
|
| 674 |
colortrans(cvts.r.colors[x], cvts.cmat,
|
| 675 |
cvts.r.colors[x]);
|
| 676 |
if (CHK(C_GAMUT))
|
| 677 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1],
|
| 678 |
CGAMUT_LOWER, cblack, cwhite);
|
| 679 |
}
|
| 680 |
if (cvts.bradj) {
|
| 681 |
double m = pow(2.,(double)cvts.bradj);
|
| 682 |
for (x = cvts.xmax; x--; )
|
| 683 |
scalecolor(cvts.r.colors[x], m);
|
| 684 |
}
|
| 685 |
|
| 686 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 687 |
quiterr("error writing Radiance picture");
|
| 688 |
}
|
| 689 |
|
| 690 |
|
| 691 |
static void
|
| 692 |
RRGGBB2Color( /* read/convert/write RGB16->COLOR scanline */
|
| 693 |
uint32 y
|
| 694 |
)
|
| 695 |
{
|
| 696 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01);
|
| 697 |
register double d;
|
| 698 |
register int x;
|
| 699 |
|
| 700 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_TWRD|C_RFLT))
|
| 701 |
quiterr("internal error 1 in RRGGBB2Color");
|
| 702 |
|
| 703 |
if (cvts.pconf != PLANARCONFIG_CONTIG)
|
| 704 |
quiterr("cannot handle separate 16-bit color planes");
|
| 705 |
|
| 706 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 707 |
quiterr("error reading TIFF input");
|
| 708 |
|
| 709 |
for (x = cvts.xmax; x--; ) {
|
| 710 |
d = (cvts.t.wp[3*x] + 0.5)*(1./(1L<<16));
|
| 711 |
if (dogamma) d = pow(d, cvts.gamcor);
|
| 712 |
colval(cvts.r.colors[x],RED) = d;
|
| 713 |
d = (cvts.t.wp[3*x + 1] + 0.5)*(1./(1L<<16));
|
| 714 |
if (dogamma) d = pow(d, cvts.gamcor);
|
| 715 |
colval(cvts.r.colors[x],GRN) = d;
|
| 716 |
d = (cvts.t.wp[3*x + 2] + 0.5)*(1./(1L<<16));
|
| 717 |
if (dogamma) d = pow(d, cvts.gamcor);
|
| 718 |
colval(cvts.r.colors[x],BLU) = d;
|
| 719 |
if (CHK(C_CXFM))
|
| 720 |
colortrans(cvts.r.colors[x], cvts.cmat,
|
| 721 |
cvts.r.colors[x]);
|
| 722 |
}
|
| 723 |
if (cvts.bradj) {
|
| 724 |
d = pow(2.,(double)cvts.bradj);
|
| 725 |
for (x = cvts.xmax; x--; )
|
| 726 |
scalecolor(cvts.r.colors[x], d);
|
| 727 |
}
|
| 728 |
|
| 729 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 730 |
quiterr("error writing Radiance picture");
|
| 731 |
}
|
| 732 |
|
| 733 |
|
| 734 |
static void
|
| 735 |
L2Color( /* read/convert/write Lfloat->COLOR scanline */
|
| 736 |
uint32 y
|
| 737 |
)
|
| 738 |
{
|
| 739 |
float m = pow(2., (double)cvts.bradj);
|
| 740 |
register int x;
|
| 741 |
|
| 742 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY))
|
| 743 |
quiterr("internal error 1 in L2Color");
|
| 744 |
|
| 745 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 746 |
quiterr("error reading TIFF input");
|
| 747 |
/* also works for float greyscale */
|
| 748 |
for (x = cvts.xmax; x--; ) {
|
| 749 |
register float f = cvts.t.fp[x];
|
| 750 |
if (cvts.bradj) f *= m;
|
| 751 |
setcolor(cvts.r.colors[x], f, f, f);
|
| 752 |
}
|
| 753 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 754 |
quiterr("error writing Radiance picture");
|
| 755 |
}
|
| 756 |
|
| 757 |
|
| 758 |
static void
|
| 759 |
RGB2Colr( /* read/convert/write RGB->COLR scanline */
|
| 760 |
uint32 y
|
| 761 |
)
|
| 762 |
{
|
| 763 |
COLOR ctmp;
|
| 764 |
register int x;
|
| 765 |
|
| 766 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY))
|
| 767 |
quiterr("internal error 1 in RGB2Colr");
|
| 768 |
|
| 769 |
if (cvts.pconf == PLANARCONFIG_CONTIG) {
|
| 770 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 771 |
goto readerr;
|
| 772 |
for (x = cvts.xmax; x--; ) {
|
| 773 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x];
|
| 774 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1];
|
| 775 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2];
|
| 776 |
}
|
| 777 |
} else {
|
| 778 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 779 |
goto readerr;
|
| 780 |
if (TIFFReadScanline(cvts.tif,
|
| 781 |
(tdata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0)
|
| 782 |
goto readerr;
|
| 783 |
if (TIFFReadScanline(cvts.tif,
|
| 784 |
(tdata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0)
|
| 785 |
goto readerr;
|
| 786 |
for (x = cvts.xmax; x--; ) {
|
| 787 |
cvts.r.colrs[x][RED] = cvts.t.bp[x];
|
| 788 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x];
|
| 789 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x];
|
| 790 |
}
|
| 791 |
}
|
| 792 |
|
| 793 |
gambs_colrs(cvts.r.colrs, cvts.xmax);
|
| 794 |
if (CHK(C_CXFM))
|
| 795 |
for (x = cvts.xmax; x--; ) {
|
| 796 |
colr_color(ctmp, cvts.r.colrs[x]);
|
| 797 |
colortrans(ctmp, cvts.cmat, ctmp);
|
| 798 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */
|
| 799 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER,
|
| 800 |
cblack, cwhite);
|
| 801 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED),
|
| 802 |
colval(ctmp,GRN), colval(ctmp,BLU));
|
| 803 |
}
|
| 804 |
if (cvts.bradj)
|
| 805 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj);
|
| 806 |
|
| 807 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0)
|
| 808 |
quiterr("error writing Radiance picture");
|
| 809 |
return;
|
| 810 |
readerr:
|
| 811 |
quiterr("error reading TIFF input");
|
| 812 |
}
|
| 813 |
|
| 814 |
|
| 815 |
static void
|
| 816 |
Gry2Colr( /* read/convert/write G8->COLR scanline */
|
| 817 |
uint32 y
|
| 818 |
)
|
| 819 |
{
|
| 820 |
register int x;
|
| 821 |
|
| 822 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY)
|
| 823 |
quiterr("internal error 1 in Gry2Colr");
|
| 824 |
|
| 825 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 826 |
quiterr("error reading TIFF input");
|
| 827 |
|
| 828 |
for (x = cvts.xmax; x--; )
|
| 829 |
cvts.r.colrs[x][RED] =
|
| 830 |
cvts.r.colrs[x][GRN] =
|
| 831 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x];
|
| 832 |
|
| 833 |
gambs_colrs(cvts.r.colrs, cvts.xmax);
|
| 834 |
if (cvts.bradj)
|
| 835 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj);
|
| 836 |
|
| 837 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0)
|
| 838 |
quiterr("error writing Radiance picture");
|
| 839 |
}
|
| 840 |
|
| 841 |
|
| 842 |
static void
|
| 843 |
GGry2Color( /* read/convert/write G16->COLOR scanline */
|
| 844 |
uint32 y
|
| 845 |
)
|
| 846 |
{
|
| 847 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01);
|
| 848 |
double m;
|
| 849 |
register double d;
|
| 850 |
register int x;
|
| 851 |
|
| 852 |
if (CHK(C_TFLT|C_TWRD|C_GRY|C_RFLT) != (C_GRY|C_RFLT|C_TWRD))
|
| 853 |
quiterr("internal error 1 in GGry2Color");
|
| 854 |
|
| 855 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 856 |
quiterr("error reading TIFF input");
|
| 857 |
|
| 858 |
if (cvts.bradj)
|
| 859 |
m = pow(2., (double)cvts.bradj);
|
| 860 |
for (x = cvts.xmax; x--; ) {
|
| 861 |
d = (cvts.t.wp[x] + 0.5)*(1./(1L<<16));
|
| 862 |
if (dogamma) d = pow(d, cvts.gamcor);
|
| 863 |
if (cvts.bradj) d *= m;
|
| 864 |
colval(cvts.r.colors[x],RED) =
|
| 865 |
colval(cvts.r.colors[x],GRN) =
|
| 866 |
colval(cvts.r.colors[x],BLU) = d;
|
| 867 |
}
|
| 868 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 869 |
quiterr("error writing Radiance picture");
|
| 870 |
}
|
| 871 |
|
| 872 |
|
| 873 |
static void
|
| 874 |
Color2GGry( /* read/convert/write COLOR->G16 scanline */
|
| 875 |
uint32 y
|
| 876 |
)
|
| 877 |
{
|
| 878 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01);
|
| 879 |
float m = pow(2.,(double)cvts.bradj);
|
| 880 |
register int x;
|
| 881 |
|
| 882 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD|C_GRY))
|
| 883 |
quiterr("internal error 1 in Color2GGry");
|
| 884 |
|
| 885 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 886 |
quiterr("error reading Radiance picture");
|
| 887 |
|
| 888 |
for (x = cvts.xmax; x--; ) {
|
| 889 |
register float f = m*( CHK(C_XYZE) ?
|
| 890 |
colval(cvts.r.colors[x],CIEY)
|
| 891 |
: bright(cvts.r.colors[x]) );
|
| 892 |
if (f <= 0)
|
| 893 |
cvts.t.wp[x] = 0;
|
| 894 |
else if (f >= 1)
|
| 895 |
cvts.t.wp[x] = 0xffff;
|
| 896 |
else if (dogamma)
|
| 897 |
cvts.t.wp[x] = (int)((float)(1L<<16) *
|
| 898 |
pow(f, 1./cvts.gamcor));
|
| 899 |
else
|
| 900 |
cvts.t.wp[x] = (int)((float)(1L<<16) * f);
|
| 901 |
}
|
| 902 |
|
| 903 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 904 |
quiterr("error writing TIFF output");
|
| 905 |
}
|
| 906 |
|
| 907 |
|
| 908 |
static void
|
| 909 |
Color2L( /* read/convert/write COLOR->Lfloat scanline */
|
| 910 |
uint32 y
|
| 911 |
)
|
| 912 |
{
|
| 913 |
float m = pow(2.,(double)cvts.bradj);
|
| 914 |
register int x;
|
| 915 |
|
| 916 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TFLT|C_GRY))
|
| 917 |
quiterr("internal error 1 in Color2L");
|
| 918 |
|
| 919 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 920 |
quiterr("error reading Radiance picture");
|
| 921 |
|
| 922 |
for (x = cvts.xmax; x--; )
|
| 923 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY)
|
| 924 |
: bright(cvts.r.colors[x]) );
|
| 925 |
|
| 926 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 927 |
quiterr("error writing TIFF output");
|
| 928 |
}
|
| 929 |
|
| 930 |
|
| 931 |
static void
|
| 932 |
Color2Luv( /* read/convert/write COLOR->Luv scanline */
|
| 933 |
uint32 y
|
| 934 |
)
|
| 935 |
{
|
| 936 |
register int x;
|
| 937 |
|
| 938 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT))
|
| 939 |
quiterr("internal error 1 in Color2Luv");
|
| 940 |
|
| 941 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 942 |
quiterr("error reading Radiance picture");
|
| 943 |
|
| 944 |
if (CHK(C_CXFM))
|
| 945 |
for (x = cvts.xmax; x--; )
|
| 946 |
colortrans(cvts.r.colors[x], cvts.cmat,
|
| 947 |
cvts.r.colors[x]);
|
| 948 |
if (cvts.bradj) {
|
| 949 |
double m = pow(2.,(double)cvts.bradj);
|
| 950 |
for (x = cvts.xmax; x--; )
|
| 951 |
scalecolor(cvts.r.colors[x], m);
|
| 952 |
}
|
| 953 |
/* also works for float RGB */
|
| 954 |
for (x = cvts.xmax; x--; ) {
|
| 955 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],CIEX);
|
| 956 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],CIEY);
|
| 957 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],CIEZ);
|
| 958 |
}
|
| 959 |
|
| 960 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 961 |
quiterr("error writing TIFF output");
|
| 962 |
}
|
| 963 |
|
| 964 |
|
| 965 |
static void
|
| 966 |
Color2RRGGBB( /* read/convert/write COLOR->RGB16 scanline */
|
| 967 |
uint32 y
|
| 968 |
)
|
| 969 |
{
|
| 970 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01);
|
| 971 |
float m = pow(2.,(double)cvts.bradj);
|
| 972 |
register int x, i;
|
| 973 |
|
| 974 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD))
|
| 975 |
quiterr("internal error 1 in Color2RRGGBB");
|
| 976 |
|
| 977 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0)
|
| 978 |
quiterr("error reading Radiance picture");
|
| 979 |
|
| 980 |
for (x = cvts.xmax; x--; ) {
|
| 981 |
if (CHK(C_CXFM)) {
|
| 982 |
colortrans(cvts.r.colors[x], cvts.cmat,
|
| 983 |
cvts.r.colors[x]);
|
| 984 |
if (CHK(C_GAMUT))
|
| 985 |
clipgamut(cvts.r.colors[x], bright(cvts.r.colors[x]),
|
| 986 |
CGAMUT_LOWER, cblack, cwhite);
|
| 987 |
}
|
| 988 |
for (i = 3; i--; ) {
|
| 989 |
register float f = m*colval(cvts.r.colors[x],i);
|
| 990 |
if (f <= 0)
|
| 991 |
cvts.t.wp[3*x + i] = 0;
|
| 992 |
else if (f >= 1)
|
| 993 |
cvts.t.wp[3*x + i] = 0xffff;
|
| 994 |
else if (dogamma)
|
| 995 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16) *
|
| 996 |
pow(f, 1./cvts.gamcor));
|
| 997 |
else
|
| 998 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16)*f);
|
| 999 |
}
|
| 1000 |
}
|
| 1001 |
|
| 1002 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 1003 |
quiterr("error writing TIFF output");
|
| 1004 |
}
|
| 1005 |
|
| 1006 |
|
| 1007 |
static void
|
| 1008 |
Colr2Gry( /* read/convert/write COLR->RGB scanline */
|
| 1009 |
uint32 y
|
| 1010 |
)
|
| 1011 |
{
|
| 1012 |
register int x;
|
| 1013 |
|
| 1014 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY)
|
| 1015 |
quiterr("internal error 1 in Colr2Gry");
|
| 1016 |
|
| 1017 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0)
|
| 1018 |
quiterr("error reading Radiance picture");
|
| 1019 |
|
| 1020 |
if (cvts.bradj)
|
| 1021 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj);
|
| 1022 |
for (x = cvts.xmax; x--; )
|
| 1023 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]);
|
| 1024 |
colrs_gambs(cvts.r.colrs, cvts.xmax);
|
| 1025 |
|
| 1026 |
for (x = cvts.xmax; x--; )
|
| 1027 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY);
|
| 1028 |
|
| 1029 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 1030 |
quiterr("error writing TIFF output");
|
| 1031 |
}
|
| 1032 |
|
| 1033 |
|
| 1034 |
static void
|
| 1035 |
Colr2RGB( /* read/convert/write COLR->RGB scanline */
|
| 1036 |
uint32 y
|
| 1037 |
)
|
| 1038 |
{
|
| 1039 |
COLOR ctmp;
|
| 1040 |
register int x;
|
| 1041 |
|
| 1042 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY))
|
| 1043 |
quiterr("internal error 1 in Colr2RGB");
|
| 1044 |
|
| 1045 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0)
|
| 1046 |
quiterr("error reading Radiance picture");
|
| 1047 |
|
| 1048 |
if (cvts.bradj)
|
| 1049 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj);
|
| 1050 |
if (CHK(C_CXFM))
|
| 1051 |
for (x = cvts.xmax; x--; ) {
|
| 1052 |
colr_color(ctmp, cvts.r.colrs[x]);
|
| 1053 |
colortrans(ctmp, cvts.cmat, ctmp);
|
| 1054 |
if (CHK(C_GAMUT))
|
| 1055 |
clipgamut(ctmp, bright(ctmp), CGAMUT,
|
| 1056 |
cblack, cwhite);
|
| 1057 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED),
|
| 1058 |
colval(ctmp,GRN), colval(ctmp,BLU));
|
| 1059 |
}
|
| 1060 |
colrs_gambs(cvts.r.colrs, cvts.xmax);
|
| 1061 |
|
| 1062 |
for (x = cvts.xmax; x--; ) {
|
| 1063 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED];
|
| 1064 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN];
|
| 1065 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU];
|
| 1066 |
}
|
| 1067 |
|
| 1068 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0)
|
| 1069 |
quiterr("error writing TIFF output");
|
| 1070 |
}
|
