1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ra_tiff.c,v 2.34 2010/12/04 00:24:43 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 <stdio.h> |
11 |
#include <math.h> |
12 |
#include <ctype.h> |
13 |
#include <time.h> |
14 |
#include <string.h> |
15 |
|
16 |
#include "platform.h" |
17 |
#include "tiffio.h" |
18 |
#include "color.h" |
19 |
#include "resolu.h" |
20 |
|
21 |
#define GAMCOR 2.2 /* default gamma */ |
22 |
|
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_TWRD 0x80 /* TIFF data is 16-bit */ |
32 |
#define C_PRIM 0x100 /* has assigned primaries */ |
33 |
|
34 |
typedef void colcvf_t(uint32 y); |
35 |
|
36 |
struct { |
37 |
uint16 flags; /* conversion flags (defined above) */ |
38 |
char capdate[20]; /* capture date/time */ |
39 |
char owner[256]; /* content owner */ |
40 |
uint16 comp; /* TIFF compression type */ |
41 |
uint16 phot; /* TIFF photometric type */ |
42 |
uint16 pconf; /* TIFF planar configuration */ |
43 |
float gamcor; /* gamma correction value */ |
44 |
short bradj; /* Radiance exposure adjustment (stops) */ |
45 |
uint16 orient; /* visual orientation (TIFF spec.) */ |
46 |
double stonits; /* input conversion to nits */ |
47 |
float pixrat; /* pixel aspect ratio */ |
48 |
FILE *rfp; /* Radiance stream pointer */ |
49 |
TIFF *tif; /* TIFF pointer */ |
50 |
uint32 xmax, ymax; /* image dimensions */ |
51 |
COLORMAT cmat; /* color transformation matrix */ |
52 |
RGBPRIMS prims; /* RGB primaries */ |
53 |
union { |
54 |
COLR *colrs; /* 4-byte ???E pointer */ |
55 |
COLOR *colors; /* float array pointer */ |
56 |
char *p; /* generic pointer */ |
57 |
} r; /* Radiance scanline */ |
58 |
union { |
59 |
uint8 *bp; /* byte pointer */ |
60 |
uint16 *wp; /* word pointer */ |
61 |
float *fp; /* float pointer */ |
62 |
char *p; /* generic pointer */ |
63 |
} t; /* TIFF scanline */ |
64 |
colcvf_t *tf; /* translation procedure */ |
65 |
} cvts = { /* conversion structure */ |
66 |
0, "", "", COMPRESSION_NONE, PHOTOMETRIC_RGB, |
67 |
PLANARCONFIG_CONTIG, GAMCOR, 0, 1, 1., 1., |
68 |
}; |
69 |
|
70 |
#define CHK(f) (cvts.flags & (f)) |
71 |
#define SET(f) (cvts.flags |= (f)) |
72 |
#define CLR(f) (cvts.flags &= ~(f)) |
73 |
#define TGL(f) (cvts.flags ^= (f)) |
74 |
|
75 |
static colcvf_t Luv2Color, L2Color, RGB2Colr, Gry2Colr; |
76 |
static colcvf_t Color2Luv, Color2L, Colr2RGB, Colr2Gry; |
77 |
static colcvf_t RRGGBB2Color, GGry2Color, Color2RRGGBB, Color2GGry; |
78 |
|
79 |
static gethfunc headline; |
80 |
static void quiterr(char *err); |
81 |
static void allocbufs(void); |
82 |
static void initfromtif(void); |
83 |
static void tiff2ra(int ac, char *av[]); |
84 |
static void initfromrad(void); |
85 |
static void ra2tiff(int ac, char *av[]); |
86 |
|
87 |
|
88 |
|
89 |
#define RfGfBf2Color Luv2Color |
90 |
#define Gryf2Color L2Color |
91 |
#define Color2Gryf Color2L |
92 |
#define Color2RfGfBf Color2Luv |
93 |
|
94 |
short ortab[8] = { /* orientation conversion table */ |
95 |
YMAJOR|YDECR, |
96 |
YMAJOR|YDECR|XDECR, |
97 |
YMAJOR|XDECR, |
98 |
YMAJOR, |
99 |
YDECR, |
100 |
XDECR|YDECR, |
101 |
XDECR, |
102 |
0 |
103 |
}; |
104 |
|
105 |
#define pixorder() ortab[cvts.orient-1] |
106 |
|
107 |
extern char TMSTR[]; /* "CAPDATE=" from header.c */ |
108 |
char OWNSTR[] = "OWNER="; |
109 |
|
110 |
char *progname; |
111 |
|
112 |
|
113 |
int |
114 |
main(int argc, char *argv[]) |
115 |
{ |
116 |
int reverse = 0; |
117 |
int i; |
118 |
|
119 |
progname = argv[0]; |
120 |
|
121 |
for (i = 1; i < argc; i++) |
122 |
if (argv[i][0] == '-') |
123 |
switch (argv[i][1]) { |
124 |
case 'g': /* gamma correction */ |
125 |
cvts.gamcor = atof(argv[++i]); |
126 |
break; |
127 |
case 'x': /* XYZE Radiance output */ |
128 |
TGL(C_XYZE); |
129 |
break; |
130 |
case 'z': /* LZW compressed output */ |
131 |
cvts.comp = COMPRESSION_LZW; |
132 |
break; |
133 |
case 'L': /* LogLuv 32-bit output */ |
134 |
cvts.comp = COMPRESSION_SGILOG; |
135 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
136 |
break; |
137 |
case 'l': /* LogLuv 24-bit output */ |
138 |
cvts.comp = COMPRESSION_SGILOG24; |
139 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
140 |
break; |
141 |
case 'w': /* 16-bit/primary output? */ |
142 |
TGL(C_TWRD); |
143 |
break; |
144 |
case 'f': /* IEEE float output? */ |
145 |
TGL(C_TFLT); |
146 |
break; |
147 |
case 'b': /* greyscale output? */ |
148 |
TGL(C_GRY); |
149 |
break; |
150 |
case 'e': /* exposure adjustment */ |
151 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
152 |
goto userr; |
153 |
cvts.bradj = atoi(argv[++i]); |
154 |
break; |
155 |
case 'r': /* reverse conversion? */ |
156 |
reverse = !reverse; |
157 |
break; |
158 |
case '\0': |
159 |
goto doneopts; |
160 |
default: |
161 |
goto userr; |
162 |
} |
163 |
else |
164 |
break; |
165 |
doneopts: |
166 |
if (reverse) { |
167 |
|
168 |
if (i != argc-2 && i != argc-1) |
169 |
goto userr; |
170 |
|
171 |
tiff2ra(i, argv); |
172 |
|
173 |
} else { |
174 |
|
175 |
if (i != argc-2) |
176 |
goto userr; |
177 |
/* consistency checks */ |
178 |
if (CHK(C_GRY)) { |
179 |
if (cvts.phot == PHOTOMETRIC_RGB) |
180 |
cvts.phot = PHOTOMETRIC_MINISBLACK; |
181 |
else { |
182 |
cvts.phot = PHOTOMETRIC_LOGL; |
183 |
cvts.comp = COMPRESSION_SGILOG; |
184 |
} |
185 |
} |
186 |
if (CHK(C_TWRD|C_TFLT) == (C_TWRD|C_TFLT)) |
187 |
goto userr; |
188 |
|
189 |
ra2tiff(i, argv); |
190 |
} |
191 |
|
192 |
exit(0); |
193 |
userr: |
194 |
fprintf(stderr, |
195 |
"Usage: %s [-z|-L|-l|-f|-w][-b][-e +/-stops][-g gamma] {in.hdr|-} out.tif\n", |
196 |
progname); |
197 |
fprintf(stderr, |
198 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.hdr|-]\n", |
199 |
progname); |
200 |
exit(1); |
201 |
} |
202 |
|
203 |
|
204 |
static void |
205 |
quiterr( /* print message and exit */ |
206 |
char *err |
207 |
) |
208 |
{ |
209 |
if (err != NULL) { |
210 |
fprintf(stderr, "%s: %s\n", progname, err); |
211 |
exit(1); |
212 |
} |
213 |
exit(0); |
214 |
} |
215 |
|
216 |
|
217 |
static void |
218 |
allocbufs(void) /* allocate scanline buffers */ |
219 |
{ |
220 |
int rsiz, tsiz; |
221 |
|
222 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR); |
223 |
tsiz = (CHK(C_TFLT) ? sizeof(float) : |
224 |
CHK(C_TWRD) ? sizeof(uint16) : sizeof(uint8)) * |
225 |
(CHK(C_GRY) ? 1 : 3); |
226 |
cvts.r.p = (char *)malloc(rsiz*cvts.xmax); |
227 |
cvts.t.p = (char *)malloc(tsiz*cvts.xmax); |
228 |
if ((cvts.r.p == NULL) | (cvts.t.p == NULL)) |
229 |
quiterr("no memory to allocate scanline buffers"); |
230 |
} |
231 |
|
232 |
|
233 |
static void |
234 |
initfromtif(void) /* initialize conversion from TIFF input */ |
235 |
{ |
236 |
uint16 hi; |
237 |
char *cp; |
238 |
float *fa, f1, f2; |
239 |
|
240 |
CLR(C_GRY|C_GAMMA|C_PRIM|C_RFLT|C_TFLT|C_TWRD|C_CXFM); |
241 |
|
242 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PLANARCONFIG, &cvts.pconf); |
243 |
|
244 |
if (TIFFGetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) { |
245 |
cvts.prims[RED][CIEX] = fa[0]; |
246 |
cvts.prims[RED][CIEY] = fa[1]; |
247 |
cvts.prims[GRN][CIEX] = fa[2]; |
248 |
cvts.prims[GRN][CIEY] = fa[3]; |
249 |
cvts.prims[BLU][CIEX] = fa[4]; |
250 |
cvts.prims[BLU][CIEY] = fa[5]; |
251 |
cvts.prims[WHT][CIEX] = 1./3.; |
252 |
cvts.prims[WHT][CIEY] = 1./3.; |
253 |
if (TIFFGetField(cvts.tif, TIFFTAG_WHITEPOINT, &fa)) { |
254 |
cvts.prims[WHT][CIEX] = fa[0]; |
255 |
cvts.prims[WHT][CIEY] = fa[1]; |
256 |
} |
257 |
SET(C_PRIM); |
258 |
} |
259 |
|
260 |
if (!TIFFGetField(cvts.tif, TIFFTAG_COMPRESSION, &cvts.comp)) |
261 |
cvts.comp = COMPRESSION_NONE; |
262 |
|
263 |
if (TIFFGetField(cvts.tif, TIFFTAG_XRESOLUTION, &f1) && |
264 |
TIFFGetField(cvts.tif, TIFFTAG_YRESOLUTION, &f2)) |
265 |
cvts.pixrat = f1/f2; |
266 |
|
267 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_ORIENTATION, &cvts.orient); |
268 |
|
269 |
if (!TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PHOTOMETRIC, &cvts.phot)) |
270 |
quiterr("TIFF has unspecified photometric type"); |
271 |
|
272 |
switch (cvts.phot) { |
273 |
case PHOTOMETRIC_LOGLUV: |
274 |
SET(C_RFLT|C_TFLT); |
275 |
if (!CHK(C_XYZE)) { |
276 |
cpcolormat(cvts.cmat, xyz2rgbmat); |
277 |
SET(C_CXFM|C_GAMUT); |
278 |
} else if (cvts.comp == COMPRESSION_SGILOG) |
279 |
SET(C_GAMUT); /* may be outside XYZ gamut */ |
280 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
281 |
quiterr("cannot handle separate Luv planes"); |
282 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
283 |
SGILOGDATAFMT_FLOAT); |
284 |
cvts.tf = Luv2Color; |
285 |
break; |
286 |
case PHOTOMETRIC_LOGL: |
287 |
SET(C_GRY|C_RFLT|C_TFLT|C_GAMUT); |
288 |
cvts.pconf = PLANARCONFIG_CONTIG; |
289 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
290 |
SGILOGDATAFMT_FLOAT); |
291 |
cvts.tf = L2Color; |
292 |
break; |
293 |
case PHOTOMETRIC_YCBCR: |
294 |
if (cvts.comp == COMPRESSION_JPEG && |
295 |
cvts.pconf == PLANARCONFIG_CONTIG) { |
296 |
TIFFSetField(cvts.tif, TIFFTAG_JPEGCOLORMODE, |
297 |
JPEGCOLORMODE_RGB); |
298 |
cvts.phot = PHOTOMETRIC_RGB; |
299 |
} else |
300 |
quiterr("unsupported photometric type"); |
301 |
/* fall through */ |
302 |
case PHOTOMETRIC_RGB: |
303 |
SET(C_GAMMA); |
304 |
setcolrgam(cvts.gamcor); |
305 |
if (CHK(C_XYZE)) { |
306 |
comprgb2xyzWBmat(cvts.cmat, |
307 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
308 |
SET(C_CXFM); |
309 |
} |
310 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
311 |
hi != 3) |
312 |
quiterr("unsupported samples per pixel for RGB"); |
313 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi)) |
314 |
hi = -1; |
315 |
switch (hi) { |
316 |
case 8: |
317 |
cvts.tf = RGB2Colr; |
318 |
break; |
319 |
case 16: |
320 |
cvts.tf = RRGGBB2Color; |
321 |
SET(C_RFLT|C_TWRD); |
322 |
break; |
323 |
case 32: |
324 |
cvts.tf = RfGfBf2Color; |
325 |
SET(C_RFLT|C_TFLT); |
326 |
break; |
327 |
default: |
328 |
quiterr("unsupported bits per sample for RGB"); |
329 |
} |
330 |
break; |
331 |
case PHOTOMETRIC_MINISBLACK: |
332 |
SET(C_GRY|C_GAMMA); |
333 |
setcolrgam(cvts.gamcor); |
334 |
cvts.pconf = PLANARCONFIG_CONTIG; |
335 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
336 |
hi != 1) |
337 |
quiterr("unsupported samples per pixel for greyscale"); |
338 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi)) |
339 |
hi = -1; |
340 |
switch (hi) { |
341 |
case 8: |
342 |
cvts.tf = Gry2Colr; |
343 |
break; |
344 |
case 16: |
345 |
cvts.tf = GGry2Color; |
346 |
SET(C_RFLT|C_TWRD); |
347 |
break; |
348 |
case 32: |
349 |
cvts.tf = Gryf2Color; |
350 |
SET(C_RFLT|C_TFLT); |
351 |
break; |
352 |
default: |
353 |
quiterr("unsupported bits per sample for Gray"); |
354 |
} |
355 |
break; |
356 |
default: |
357 |
quiterr("unsupported photometric type"); |
358 |
break; |
359 |
} |
360 |
|
361 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) || |
362 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax)) |
363 |
quiterr("unknown input image resolution"); |
364 |
|
365 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits)) |
366 |
cvts.stonits = -1.; |
367 |
|
368 |
if (!TIFFGetField(cvts.tif, TIFFTAG_DATETIME, &cp)) |
369 |
cvts.capdate[0] = '\0'; |
370 |
else { |
371 |
strncpy(cvts.capdate, cp, 19); |
372 |
cvts.capdate[19] = '\0'; |
373 |
} |
374 |
if (!TIFFGetField(cvts.tif, TIFFTAG_ARTIST, &cp)) |
375 |
cvts.owner[0] = '\0'; |
376 |
else { |
377 |
strncpy(cvts.owner, cp, sizeof(cvts.owner)); |
378 |
cvts.owner[sizeof(cvts.owner)-1] = '\0'; |
379 |
} |
380 |
/* add to Radiance header */ |
381 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01) |
382 |
fputaspect(cvts.pixrat, cvts.rfp); |
383 |
if (CHK(C_XYZE)) { |
384 |
if (cvts.stonits > .0) |
385 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp); |
386 |
fputformat(CIEFMT, cvts.rfp); |
387 |
} else { |
388 |
if (CHK(C_PRIM)) |
389 |
fputprims(cvts.prims, cvts.rfp); |
390 |
if (cvts.stonits > .0) |
391 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits, |
392 |
cvts.rfp); |
393 |
fputformat(COLRFMT, cvts.rfp); |
394 |
} |
395 |
if (cvts.capdate[0]) |
396 |
fprintf(cvts.rfp, "%s %s\n", TMSTR, cvts.capdate); |
397 |
if (cvts.owner[0]) |
398 |
fprintf(cvts.rfp, "%s %s\n", OWNSTR, cvts.owner); |
399 |
|
400 |
allocbufs(); /* allocate scanline buffers */ |
401 |
} |
402 |
|
403 |
|
404 |
static void |
405 |
tiff2ra( /* convert TIFF image to Radiance picture */ |
406 |
int ac, |
407 |
char *av[] |
408 |
) |
409 |
{ |
410 |
int32 y; |
411 |
/* open TIFF input */ |
412 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL) |
413 |
quiterr("cannot open TIFF input"); |
414 |
/* open Radiance output */ |
415 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-")) |
416 |
cvts.rfp = stdout; |
417 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL) |
418 |
quiterr("cannot open Radiance output picture"); |
419 |
SET_FILE_BINARY(cvts.rfp); |
420 |
/* start output header */ |
421 |
newheader("RADIANCE", cvts.rfp); |
422 |
printargs(ac, av, cvts.rfp); |
423 |
|
424 |
initfromtif(); /* initialize conversion */ |
425 |
|
426 |
fputc('\n', cvts.rfp); /* finish Radiance header */ |
427 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp); |
428 |
|
429 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
430 |
(*cvts.tf)(y); |
431 |
/* clean up */ |
432 |
fclose(cvts.rfp); |
433 |
TIFFClose(cvts.tif); |
434 |
} |
435 |
|
436 |
|
437 |
static int |
438 |
headline( /* process Radiance input header line */ |
439 |
char *s, |
440 |
void *p |
441 |
) |
442 |
{ |
443 |
static int tmstrlen = 0; |
444 |
static int ownstrlen = 0; |
445 |
char fmt[MAXFMTLEN]; |
446 |
|
447 |
if (!tmstrlen) |
448 |
tmstrlen = strlen(TMSTR); |
449 |
if (!ownstrlen) |
450 |
ownstrlen = strlen(OWNSTR); |
451 |
if (formatval(fmt, s)) { |
452 |
if (!strcmp(fmt, COLRFMT)) |
453 |
CLR(C_XYZE); |
454 |
else if (!strcmp(fmt, CIEFMT)) |
455 |
SET(C_XYZE); |
456 |
else |
457 |
quiterr("unrecognized input picture format"); |
458 |
return(1); |
459 |
} |
460 |
if (isexpos(s)) { |
461 |
cvts.stonits /= exposval(s); |
462 |
return(1); |
463 |
} |
464 |
if (isaspect(s)) { |
465 |
cvts.pixrat *= aspectval(s); |
466 |
return(1); |
467 |
} |
468 |
if (isprims(s)) { |
469 |
primsval(cvts.prims, s); |
470 |
SET(C_PRIM); |
471 |
return(1); |
472 |
} |
473 |
if (isdate(s)) { |
474 |
if (s[tmstrlen] == ' ') |
475 |
strncpy(cvts.capdate, s+tmstrlen+1, 19); |
476 |
else |
477 |
strncpy(cvts.capdate, s+tmstrlen, 19); |
478 |
cvts.capdate[19] = '\0'; |
479 |
return(1); |
480 |
} |
481 |
if (!strncmp(s, OWNSTR, ownstrlen)) { |
482 |
register char *cp = s + ownstrlen; |
483 |
|
484 |
while (isspace(*cp)) |
485 |
++cp; |
486 |
strncpy(cvts.owner, cp, sizeof(cvts.owner)); |
487 |
cvts.owner[sizeof(cvts.owner)-1] = '\0'; |
488 |
for (cp = cvts.owner; *cp; cp++) |
489 |
; |
490 |
while (cp > cvts.owner && isspace(cp[-1])) |
491 |
*--cp = '\0'; |
492 |
return(1); |
493 |
} |
494 |
return(0); |
495 |
} |
496 |
|
497 |
|
498 |
static void |
499 |
initfromrad(void) /* initialize input from a Radiance picture */ |
500 |
{ |
501 |
int i1, i2, po; |
502 |
/* read Radiance header */ |
503 |
CLR(C_RFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM); |
504 |
cvts.capdate[0] = '\0'; |
505 |
cvts.owner[0] = '\0'; |
506 |
cvts.stonits = 1.; |
507 |
cvts.pixrat = 1.; |
508 |
cvts.pconf = PLANARCONFIG_CONTIG; |
509 |
getheader(cvts.rfp, headline, NULL); |
510 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0) |
511 |
quiterr("bad Radiance picture"); |
512 |
cvts.xmax = i1; cvts.ymax = i2; |
513 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */ |
514 |
if (ortab[i1] == po) { |
515 |
cvts.orient = i1 + 1; |
516 |
break; |
517 |
} |
518 |
if (i1 >= 8) |
519 |
quiterr("internal error 1 in initfromrad"); |
520 |
if (!(po & YMAJOR)) |
521 |
cvts.pixrat = 1./cvts.pixrat; |
522 |
if (!CHK(C_XYZE)) |
523 |
cvts.stonits *= WHTEFFICACY; |
524 |
/* set up conversion */ |
525 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp); |
526 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, cvts.phot); |
527 |
|
528 |
switch (cvts.phot) { |
529 |
case PHOTOMETRIC_LOGLUV: |
530 |
SET(C_RFLT|C_TFLT); |
531 |
CLR(C_GRY|C_TWRD); |
532 |
if (!CHK(C_XYZE)) { |
533 |
comprgb2xyzWBmat(cvts.cmat, |
534 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
535 |
SET(C_CXFM); |
536 |
} |
537 |
if (cvts.comp != COMPRESSION_SGILOG && |
538 |
cvts.comp != COMPRESSION_SGILOG24) |
539 |
quiterr("internal error 2 in initfromrad"); |
540 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
541 |
SGILOGDATAFMT_FLOAT); |
542 |
cvts.tf = Color2Luv; |
543 |
break; |
544 |
case PHOTOMETRIC_LOGL: |
545 |
SET(C_GRY|C_RFLT|C_TFLT); |
546 |
CLR(C_TWRD); |
547 |
if (cvts.comp != COMPRESSION_SGILOG) |
548 |
quiterr("internal error 3 in initfromrad"); |
549 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
550 |
SGILOGDATAFMT_FLOAT); |
551 |
cvts.tf = Color2L; |
552 |
break; |
553 |
case PHOTOMETRIC_RGB: |
554 |
SET(C_GAMMA|C_GAMUT); |
555 |
CLR(C_GRY); |
556 |
setcolrgam(cvts.gamcor); |
557 |
if (CHK(C_XYZE)) { |
558 |
compxyz2rgbWBmat(cvts.cmat, |
559 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
560 |
SET(C_CXFM); |
561 |
} |
562 |
if (CHK(C_PRIM)) { |
563 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, |
564 |
(float *)cvts.prims); |
565 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT, |
566 |
(float *)cvts.prims[WHT]); |
567 |
} |
568 |
if (CHK(C_TWRD)) { |
569 |
cvts.tf = Color2RRGGBB; |
570 |
SET(C_RFLT); |
571 |
} else if (CHK(C_TFLT)) { |
572 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
573 |
SAMPLEFORMAT_IEEEFP); |
574 |
cvts.tf = Color2RfGfBf; |
575 |
SET(C_RFLT); |
576 |
CLR(C_GAMUT); |
577 |
} else |
578 |
cvts.tf = Colr2RGB; |
579 |
break; |
580 |
case PHOTOMETRIC_MINISBLACK: |
581 |
SET(C_GRY|C_GAMMA|C_GAMUT); |
582 |
setcolrgam(cvts.gamcor); |
583 |
if (CHK(C_TWRD)) { |
584 |
cvts.tf = Color2GGry; |
585 |
SET(C_RFLT); |
586 |
} else if (CHK(C_TFLT)) { |
587 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLEFORMAT, |
588 |
SAMPLEFORMAT_IEEEFP); |
589 |
cvts.tf = Color2Gryf; |
590 |
SET(C_RFLT); |
591 |
} else |
592 |
cvts.tf = Colr2Gry; |
593 |
break; |
594 |
default: |
595 |
quiterr("internal error 4 in initfromrad"); |
596 |
break; |
597 |
} |
598 |
/* set other TIFF fields */ |
599 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax); |
600 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax); |
601 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3); |
602 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, |
603 |
CHK(C_TFLT) ? 32 : CHK(C_TWRD) ? 16 : 8); |
604 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.); |
605 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat); |
606 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient); |
607 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2); |
608 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf); |
609 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS, |
610 |
cvts.stonits/pow(2.,(double)cvts.bradj)); |
611 |
if (cvts.capdate[0]) |
612 |
TIFFSetField(cvts.tif, TIFFTAG_DATETIME, cvts.capdate); |
613 |
if (cvts.owner[0]) |
614 |
TIFFSetField(cvts.tif, TIFFTAG_ARTIST, cvts.owner); |
615 |
if (cvts.comp == COMPRESSION_NONE) |
616 |
i1 = TIFFScanlineSize(cvts.tif); |
617 |
else |
618 |
i1 = 3*cvts.xmax; /* conservative guess */ |
619 |
i2 = 8192/i1; /* compute good strip size */ |
620 |
if (i2 < 1) i2 = 1; |
621 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2); |
622 |
|
623 |
allocbufs(); /* allocate scanline buffers */ |
624 |
} |
625 |
|
626 |
|
627 |
static void |
628 |
ra2tiff( /* convert Radiance picture to TIFF image */ |
629 |
int ac, |
630 |
char *av[] |
631 |
) |
632 |
{ |
633 |
uint32 y; |
634 |
/* open Radiance file */ |
635 |
if (!strcmp(av[ac], "-")) |
636 |
cvts.rfp = stdin; |
637 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL) |
638 |
quiterr("cannot open Radiance input picture"); |
639 |
SET_FILE_BINARY(cvts.rfp); |
640 |
/* open TIFF file */ |
641 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL) |
642 |
quiterr("cannot open TIFF output"); |
643 |
|
644 |
initfromrad(); /* initialize conversion */ |
645 |
|
646 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
647 |
(*cvts.tf)(y); |
648 |
/* clean up */ |
649 |
TIFFClose(cvts.tif); |
650 |
fclose(cvts.rfp); |
651 |
} |
652 |
|
653 |
|
654 |
static void |
655 |
Luv2Color( /* read/convert/write Luv->COLOR scanline */ |
656 |
uint32 y |
657 |
) |
658 |
{ |
659 |
register int x; |
660 |
|
661 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
662 |
quiterr("internal error 1 in Luv2Color"); |
663 |
|
664 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
665 |
quiterr("cannot handle separate 32-bit color planes"); |
666 |
|
667 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
668 |
quiterr("error reading TIFF input"); |
669 |
/* also works for float RGB */ |
670 |
for (x = cvts.xmax; x--; ) { |
671 |
setcolor(cvts.r.colors[x], |
672 |
cvts.t.fp[3*x], |
673 |
cvts.t.fp[3*x + 1], |
674 |
cvts.t.fp[3*x + 2]); |
675 |
if (CHK(C_CXFM)) |
676 |
colortrans(cvts.r.colors[x], cvts.cmat, |
677 |
cvts.r.colors[x]); |
678 |
if (CHK(C_GAMUT)) |
679 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
680 |
CGAMUT_LOWER, cblack, cwhite); |
681 |
} |
682 |
if (cvts.bradj) { |
683 |
double m = pow(2.,(double)cvts.bradj); |
684 |
for (x = cvts.xmax; x--; ) |
685 |
scalecolor(cvts.r.colors[x], m); |
686 |
} |
687 |
|
688 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
689 |
quiterr("error writing Radiance picture"); |
690 |
} |
691 |
|
692 |
|
693 |
static void |
694 |
RRGGBB2Color( /* read/convert/write RGB16->COLOR scanline */ |
695 |
uint32 y |
696 |
) |
697 |
{ |
698 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01); |
699 |
register double d; |
700 |
register int x; |
701 |
|
702 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_TWRD|C_RFLT)) |
703 |
quiterr("internal error 1 in RRGGBB2Color"); |
704 |
|
705 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
706 |
quiterr("cannot handle separate 16-bit color planes"); |
707 |
|
708 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
709 |
quiterr("error reading TIFF input"); |
710 |
|
711 |
for (x = cvts.xmax; x--; ) { |
712 |
d = (cvts.t.wp[3*x] + 0.5)*(1./(1L<<16)); |
713 |
if (dogamma) d = pow(d, cvts.gamcor); |
714 |
colval(cvts.r.colors[x],RED) = d; |
715 |
d = (cvts.t.wp[3*x + 1] + 0.5)*(1./(1L<<16)); |
716 |
if (dogamma) d = pow(d, cvts.gamcor); |
717 |
colval(cvts.r.colors[x],GRN) = d; |
718 |
d = (cvts.t.wp[3*x + 2] + 0.5)*(1./(1L<<16)); |
719 |
if (dogamma) d = pow(d, cvts.gamcor); |
720 |
colval(cvts.r.colors[x],BLU) = d; |
721 |
if (CHK(C_CXFM)) |
722 |
colortrans(cvts.r.colors[x], cvts.cmat, |
723 |
cvts.r.colors[x]); |
724 |
} |
725 |
if (cvts.bradj) { |
726 |
d = pow(2.,(double)cvts.bradj); |
727 |
for (x = cvts.xmax; x--; ) |
728 |
scalecolor(cvts.r.colors[x], d); |
729 |
} |
730 |
|
731 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
732 |
quiterr("error writing Radiance picture"); |
733 |
} |
734 |
|
735 |
|
736 |
static void |
737 |
L2Color( /* read/convert/write Lfloat->COLOR scanline */ |
738 |
uint32 y |
739 |
) |
740 |
{ |
741 |
float m = pow(2., (double)cvts.bradj); |
742 |
register int x; |
743 |
|
744 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
745 |
quiterr("internal error 1 in L2Color"); |
746 |
|
747 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
748 |
quiterr("error reading TIFF input"); |
749 |
/* also works for float greyscale */ |
750 |
for (x = cvts.xmax; x--; ) { |
751 |
register float f = cvts.t.fp[x]; |
752 |
if (cvts.bradj) f *= m; |
753 |
setcolor(cvts.r.colors[x], f, f, f); |
754 |
} |
755 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
756 |
quiterr("error writing Radiance picture"); |
757 |
} |
758 |
|
759 |
|
760 |
static void |
761 |
RGB2Colr( /* read/convert/write RGB->COLR scanline */ |
762 |
uint32 y |
763 |
) |
764 |
{ |
765 |
COLOR ctmp; |
766 |
register int x; |
767 |
|
768 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY)) |
769 |
quiterr("internal error 1 in RGB2Colr"); |
770 |
|
771 |
if (cvts.pconf == PLANARCONFIG_CONTIG) { |
772 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
773 |
goto readerr; |
774 |
for (x = cvts.xmax; x--; ) { |
775 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x]; |
776 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1]; |
777 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2]; |
778 |
} |
779 |
} else { |
780 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
781 |
goto readerr; |
782 |
if (TIFFReadScanline(cvts.tif, |
783 |
(tdata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0) |
784 |
goto readerr; |
785 |
if (TIFFReadScanline(cvts.tif, |
786 |
(tdata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0) |
787 |
goto readerr; |
788 |
for (x = cvts.xmax; x--; ) { |
789 |
cvts.r.colrs[x][RED] = cvts.t.bp[x]; |
790 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x]; |
791 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x]; |
792 |
} |
793 |
} |
794 |
|
795 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
796 |
if (CHK(C_CXFM)) |
797 |
for (x = cvts.xmax; x--; ) { |
798 |
colr_color(ctmp, cvts.r.colrs[x]); |
799 |
colortrans(ctmp, cvts.cmat, ctmp); |
800 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */ |
801 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER, |
802 |
cblack, cwhite); |
803 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
804 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
805 |
} |
806 |
if (cvts.bradj) |
807 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
808 |
|
809 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
810 |
quiterr("error writing Radiance picture"); |
811 |
return; |
812 |
readerr: |
813 |
quiterr("error reading TIFF input"); |
814 |
} |
815 |
|
816 |
|
817 |
static void |
818 |
Gry2Colr( /* read/convert/write G8->COLR scanline */ |
819 |
uint32 y |
820 |
) |
821 |
{ |
822 |
register int x; |
823 |
|
824 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
825 |
quiterr("internal error 1 in Gry2Colr"); |
826 |
|
827 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
828 |
quiterr("error reading TIFF input"); |
829 |
|
830 |
for (x = cvts.xmax; x--; ) |
831 |
cvts.r.colrs[x][RED] = |
832 |
cvts.r.colrs[x][GRN] = |
833 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x]; |
834 |
|
835 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
836 |
if (cvts.bradj) |
837 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
838 |
|
839 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
840 |
quiterr("error writing Radiance picture"); |
841 |
} |
842 |
|
843 |
|
844 |
static void |
845 |
GGry2Color( /* read/convert/write G16->COLOR scanline */ |
846 |
uint32 y |
847 |
) |
848 |
{ |
849 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01); |
850 |
double m; |
851 |
register double d; |
852 |
register int x; |
853 |
|
854 |
if (CHK(C_TFLT|C_TWRD|C_GRY|C_RFLT) != (C_GRY|C_RFLT|C_TWRD)) |
855 |
quiterr("internal error 1 in GGry2Color"); |
856 |
|
857 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
858 |
quiterr("error reading TIFF input"); |
859 |
|
860 |
if (cvts.bradj) |
861 |
m = pow(2., (double)cvts.bradj); |
862 |
for (x = cvts.xmax; x--; ) { |
863 |
d = (cvts.t.wp[x] + 0.5)*(1./(1L<<16)); |
864 |
if (dogamma) d = pow(d, cvts.gamcor); |
865 |
if (cvts.bradj) d *= m; |
866 |
colval(cvts.r.colors[x],RED) = |
867 |
colval(cvts.r.colors[x],GRN) = |
868 |
colval(cvts.r.colors[x],BLU) = d; |
869 |
} |
870 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
871 |
quiterr("error writing Radiance picture"); |
872 |
} |
873 |
|
874 |
|
875 |
static void |
876 |
Color2GGry( /* read/convert/write COLOR->G16 scanline */ |
877 |
uint32 y |
878 |
) |
879 |
{ |
880 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01); |
881 |
float m = pow(2.,(double)cvts.bradj); |
882 |
register int x; |
883 |
|
884 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD|C_GRY)) |
885 |
quiterr("internal error 1 in Color2GGry"); |
886 |
|
887 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
888 |
quiterr("error reading Radiance picture"); |
889 |
|
890 |
for (x = cvts.xmax; x--; ) { |
891 |
register float f = m*( CHK(C_XYZE) ? |
892 |
colval(cvts.r.colors[x],CIEY) |
893 |
: bright(cvts.r.colors[x]) ); |
894 |
if (f <= 0) |
895 |
cvts.t.wp[x] = 0; |
896 |
else if (f >= 1) |
897 |
cvts.t.wp[x] = 0xffff; |
898 |
else if (dogamma) |
899 |
cvts.t.wp[x] = (int)((float)(1L<<16) * |
900 |
pow(f, 1./cvts.gamcor)); |
901 |
else |
902 |
cvts.t.wp[x] = (int)((float)(1L<<16) * f); |
903 |
} |
904 |
|
905 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
906 |
quiterr("error writing TIFF output"); |
907 |
} |
908 |
|
909 |
|
910 |
static void |
911 |
Color2L( /* read/convert/write COLOR->Lfloat scanline */ |
912 |
uint32 y |
913 |
) |
914 |
{ |
915 |
float m = pow(2.,(double)cvts.bradj); |
916 |
register int x; |
917 |
|
918 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
919 |
quiterr("internal error 1 in Color2L"); |
920 |
|
921 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
922 |
quiterr("error reading Radiance picture"); |
923 |
|
924 |
for (x = cvts.xmax; x--; ) |
925 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY) |
926 |
: bright(cvts.r.colors[x]) ); |
927 |
|
928 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
929 |
quiterr("error writing TIFF output"); |
930 |
} |
931 |
|
932 |
|
933 |
static void |
934 |
Color2Luv( /* read/convert/write COLOR->Luv scanline */ |
935 |
uint32 y |
936 |
) |
937 |
{ |
938 |
register int x; |
939 |
|
940 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
941 |
quiterr("internal error 1 in Color2Luv"); |
942 |
|
943 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
944 |
quiterr("error reading Radiance picture"); |
945 |
|
946 |
if (CHK(C_CXFM)) |
947 |
for (x = cvts.xmax; x--; ) |
948 |
colortrans(cvts.r.colors[x], cvts.cmat, |
949 |
cvts.r.colors[x]); |
950 |
if (cvts.bradj) { |
951 |
double m = pow(2.,(double)cvts.bradj); |
952 |
for (x = cvts.xmax; x--; ) |
953 |
scalecolor(cvts.r.colors[x], m); |
954 |
} |
955 |
/* also works for float RGB */ |
956 |
for (x = cvts.xmax; x--; ) { |
957 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],CIEX); |
958 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],CIEY); |
959 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],CIEZ); |
960 |
} |
961 |
|
962 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
963 |
quiterr("error writing TIFF output"); |
964 |
} |
965 |
|
966 |
|
967 |
static void |
968 |
Color2RRGGBB( /* read/convert/write COLOR->RGB16 scanline */ |
969 |
uint32 y |
970 |
) |
971 |
{ |
972 |
int dogamma = (cvts.gamcor < 0.99) | (cvts.gamcor > 1.01); |
973 |
float m = pow(2.,(double)cvts.bradj); |
974 |
register int x, i; |
975 |
|
976 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD)) |
977 |
quiterr("internal error 1 in Color2RRGGBB"); |
978 |
|
979 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
980 |
quiterr("error reading Radiance picture"); |
981 |
|
982 |
for (x = cvts.xmax; x--; ) { |
983 |
if (CHK(C_CXFM)) { |
984 |
colortrans(cvts.r.colors[x], cvts.cmat, |
985 |
cvts.r.colors[x]); |
986 |
if (CHK(C_GAMUT)) |
987 |
clipgamut(cvts.r.colors[x], bright(cvts.r.colors[x]), |
988 |
CGAMUT_LOWER, cblack, cwhite); |
989 |
} |
990 |
for (i = 3; i--; ) { |
991 |
register float f = m*colval(cvts.r.colors[x],i); |
992 |
if (f <= 0) |
993 |
cvts.t.wp[3*x + i] = 0; |
994 |
else if (f >= 1) |
995 |
cvts.t.wp[3*x + i] = 0xffff; |
996 |
else if (dogamma) |
997 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16) * |
998 |
pow(f, 1./cvts.gamcor)); |
999 |
else |
1000 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16)*f); |
1001 |
} |
1002 |
} |
1003 |
|
1004 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
1005 |
quiterr("error writing TIFF output"); |
1006 |
} |
1007 |
|
1008 |
|
1009 |
static void |
1010 |
Colr2Gry( /* read/convert/write COLR->RGB scanline */ |
1011 |
uint32 y |
1012 |
) |
1013 |
{ |
1014 |
register int x; |
1015 |
|
1016 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
1017 |
quiterr("internal error 1 in Colr2Gry"); |
1018 |
|
1019 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
1020 |
quiterr("error reading Radiance picture"); |
1021 |
|
1022 |
if (cvts.bradj) |
1023 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
1024 |
for (x = cvts.xmax; x--; ) |
1025 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]); |
1026 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
1027 |
|
1028 |
for (x = cvts.xmax; x--; ) |
1029 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY); |
1030 |
|
1031 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
1032 |
quiterr("error writing TIFF output"); |
1033 |
} |
1034 |
|
1035 |
|
1036 |
static void |
1037 |
Colr2RGB( /* read/convert/write COLR->RGB scanline */ |
1038 |
uint32 y |
1039 |
) |
1040 |
{ |
1041 |
COLOR ctmp; |
1042 |
register int x; |
1043 |
|
1044 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY)) |
1045 |
quiterr("internal error 1 in Colr2RGB"); |
1046 |
|
1047 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
1048 |
quiterr("error reading Radiance picture"); |
1049 |
|
1050 |
if (cvts.bradj) |
1051 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
1052 |
if (CHK(C_CXFM)) |
1053 |
for (x = cvts.xmax; x--; ) { |
1054 |
colr_color(ctmp, cvts.r.colrs[x]); |
1055 |
colortrans(ctmp, cvts.cmat, ctmp); |
1056 |
if (CHK(C_GAMUT)) |
1057 |
clipgamut(ctmp, bright(ctmp), CGAMUT, |
1058 |
cblack, cwhite); |
1059 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
1060 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
1061 |
} |
1062 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
1063 |
|
1064 |
for (x = cvts.xmax; x--; ) { |
1065 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED]; |
1066 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN]; |
1067 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU]; |
1068 |
} |
1069 |
|
1070 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
1071 |
quiterr("error writing TIFF output"); |
1072 |
} |