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 phot; /* TIFF photometric type */ |
37 |
uint16 pconf; /* TIFF planar configuration */ |
38 |
float gamcor; /* gamma correction value */ |
39 |
short bradj; /* Radiance exposure adjustment (stops) */ |
40 |
uint16 orient; /* visual orientation (TIFF spec.) */ |
41 |
float stonits; /* input conversion to nits */ |
42 |
float pixrat; /* pixel aspect ratio */ |
43 |
FILE *rfp; /* Radiance stream pointer */ |
44 |
TIFF *tif; /* TIFF pointer */ |
45 |
uint32 xmax, ymax; /* image dimensions */ |
46 |
COLORMAT cmat; /* color transformation matrix */ |
47 |
RGBPRIMS prims; /* RGB primaries */ |
48 |
union { |
49 |
COLR *colrs; /* 4-byte ???E pointer */ |
50 |
COLOR *colors; /* float array pointer */ |
51 |
char *p; /* generic pointer */ |
52 |
} r; /* Radiance scanline */ |
53 |
union { |
54 |
uint8 *bp; /* byte pointer */ |
55 |
float *fp; /* float pointer */ |
56 |
char *p; /* generic pointer */ |
57 |
} t; /* TIFF scanline */ |
58 |
int (*tf)(); /* translation procedure */ |
59 |
} cvts = { /* conversion structure */ |
60 |
0, COMPRESSION_NONE, PHOTOMETRIC_RGB, |
61 |
PLANARCONFIG_CONTIG, GAMCOR, 0, 1, 1., 1., |
62 |
}; |
63 |
|
64 |
#define CHK(f) (cvts.flags & (f)) |
65 |
#define SET(f) (cvts.flags |= (f)) |
66 |
#define CLR(f) (cvts.flags &= ~(f)) |
67 |
#define TGL(f) (cvts.flags ^= (f)) |
68 |
|
69 |
int Luv2Color(), L2Color(), RGB2Colr(), Gry2Colr(); |
70 |
int Color2Luv(), Color2L(), Colr2RGB(), Colr2Gry(); |
71 |
|
72 |
short ortab[8] = { /* orientation conversion table */ |
73 |
YMAJOR|YDECR, |
74 |
YMAJOR|YDECR|XDECR, |
75 |
YMAJOR|XDECR, |
76 |
YMAJOR, |
77 |
YDECR, |
78 |
XDECR|YDECR, |
79 |
XDECR, |
80 |
0 |
81 |
}; |
82 |
|
83 |
#define pixorder() ortab[cvts.orient-1] |
84 |
|
85 |
char *progname; |
86 |
|
87 |
|
88 |
main(argc, argv) |
89 |
int argc; |
90 |
char *argv[]; |
91 |
{ |
92 |
int reverse = 0; |
93 |
int i; |
94 |
|
95 |
progname = argv[0]; |
96 |
|
97 |
for (i = 1; i < argc; i++) |
98 |
if (argv[i][0] == '-') |
99 |
switch (argv[i][1]) { |
100 |
case 'g': /* gamma correction */ |
101 |
cvts.gamcor = atof(argv[++i]); |
102 |
break; |
103 |
case 'x': /* XYZE Radiance output */ |
104 |
TGL(C_XYZE); |
105 |
break; |
106 |
case 'z': /* LZW compressed output */ |
107 |
cvts.comp = COMPRESSION_LZW; |
108 |
break; |
109 |
case 'L': /* LogLuv 32-bit output */ |
110 |
cvts.comp = COMPRESSION_SGILOG; |
111 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
112 |
break; |
113 |
case 'l': /* LogLuv 24-bit output */ |
114 |
cvts.comp = COMPRESSION_SGILOG24; |
115 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
116 |
break; |
117 |
case 'b': /* greyscale output? */ |
118 |
TGL(C_GRY); |
119 |
break; |
120 |
case 'e': /* exposure adjustment */ |
121 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
122 |
goto userr; |
123 |
cvts.bradj = atoi(argv[++i]); |
124 |
break; |
125 |
case 'r': /* reverse conversion? */ |
126 |
reverse = !reverse; |
127 |
break; |
128 |
case '\0': |
129 |
goto doneopts; |
130 |
default: |
131 |
goto userr; |
132 |
} |
133 |
else |
134 |
break; |
135 |
doneopts: |
136 |
if (reverse) { |
137 |
|
138 |
if (i != argc-2 && i != argc-1) |
139 |
goto userr; |
140 |
|
141 |
tiff2ra(i, argv); |
142 |
|
143 |
} else { |
144 |
|
145 |
if (i != argc-2) |
146 |
goto userr; |
147 |
|
148 |
if (CHK(C_GRY)) /* consistency corrections */ |
149 |
if (cvts.phot == PHOTOMETRIC_RGB) |
150 |
cvts.phot = PHOTOMETRIC_MINISBLACK; |
151 |
else { |
152 |
cvts.phot = PHOTOMETRIC_LOGL; |
153 |
cvts.comp = COMPRESSION_SGILOG; |
154 |
} |
155 |
|
156 |
ra2tiff(i, argv); |
157 |
} |
158 |
|
159 |
exit(0); |
160 |
userr: |
161 |
fprintf(stderr, |
162 |
"Usage: %s [-z|-L|-l][-b][-e +/-stops][-g gamma] {in.pic|-} out.tif\n", |
163 |
progname); |
164 |
fprintf(stderr, |
165 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.pic|-]\n", |
166 |
progname); |
167 |
exit(1); |
168 |
} |
169 |
|
170 |
|
171 |
quiterr(err) /* print message and exit */ |
172 |
char *err; |
173 |
{ |
174 |
if (err != NULL) { |
175 |
fprintf(stderr, "%s: %s\n", progname, err); |
176 |
exit(1); |
177 |
} |
178 |
exit(0); |
179 |
} |
180 |
|
181 |
|
182 |
allocbufs() /* allocate scanline buffers */ |
183 |
{ |
184 |
int rsiz, tsiz; |
185 |
|
186 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR); |
187 |
tsiz = (CHK(C_TFLT) ? sizeof(float) : sizeof(uint8)) * |
188 |
(CHK(C_GRY) ? 1 : 3); |
189 |
cvts.r.p = (char *)malloc(rsiz*cvts.xmax); |
190 |
cvts.t.p = (char *)malloc(tsiz*cvts.xmax); |
191 |
if (cvts.r.p == NULL | cvts.t.p == NULL) |
192 |
quiterr("no memory to allocate scanline buffers"); |
193 |
} |
194 |
|
195 |
|
196 |
initfromtif() /* initialize conversion from TIFF input */ |
197 |
{ |
198 |
uint16 hi; |
199 |
float *fa, f1, f2; |
200 |
|
201 |
CLR(C_GRY|C_GAMMA|C_PRIM|C_RFLT|C_TFLT|C_CXFM); |
202 |
|
203 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PLANARCONFIG, &cvts.pconf); |
204 |
|
205 |
if (TIFFGetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) { |
206 |
cvts.prims[RED][CIEX] = fa[0]; |
207 |
cvts.prims[RED][CIEY] = fa[1]; |
208 |
cvts.prims[GRN][CIEX] = fa[2]; |
209 |
cvts.prims[GRN][CIEY] = fa[3]; |
210 |
cvts.prims[BLU][CIEX] = fa[4]; |
211 |
cvts.prims[BLU][CIEY] = fa[5]; |
212 |
cvts.prims[WHT][CIEX] = 1./3.; |
213 |
cvts.prims[WHT][CIEY] = 1./3.; |
214 |
if (TIFFGetField(cvts.tif, TIFFTAG_WHITEPOINT, &fa)) { |
215 |
cvts.prims[WHT][CIEX] = fa[0]; |
216 |
cvts.prims[WHT][CIEY] = fa[1]; |
217 |
} |
218 |
SET(C_PRIM); |
219 |
} |
220 |
|
221 |
if (!TIFFGetField(cvts.tif, TIFFTAG_COMPRESSION, &cvts.comp)) |
222 |
cvts.comp = COMPRESSION_NONE; |
223 |
|
224 |
if (TIFFGetField(cvts.tif, TIFFTAG_XRESOLUTION, &f1) && |
225 |
TIFFGetField(cvts.tif, TIFFTAG_YRESOLUTION, &f2)) |
226 |
cvts.pixrat = f1/f2; |
227 |
|
228 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_ORIENTATION, &cvts.orient); |
229 |
|
230 |
if (!TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PHOTOMETRIC, &cvts.phot)) |
231 |
quiterr("TIFF has unspecified photometric type"); |
232 |
|
233 |
switch (cvts.phot) { |
234 |
case PHOTOMETRIC_LOGLUV: |
235 |
SET(C_RFLT|C_TFLT); |
236 |
if (!CHK(C_XYZE)) { |
237 |
cpcolormat(cvts.cmat, xyz2rgbmat); |
238 |
SET(C_CXFM|C_GAMUT); |
239 |
} else if (cvts.comp == COMPRESSION_SGILOG) |
240 |
SET(C_GAMUT); |
241 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
242 |
quiterr("cannot handle separate Luv planes"); |
243 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
244 |
SGILOGDATAFMT_FLTXYZ); |
245 |
cvts.tf = Luv2Color; |
246 |
break; |
247 |
case PHOTOMETRIC_LOGL: |
248 |
SET(C_GRY|C_RFLT|C_TFLT|C_GAMUT); |
249 |
cvts.pconf = PLANARCONFIG_CONTIG; |
250 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
251 |
SGILOGDATAFMT_FLTY); |
252 |
cvts.tf = L2Color; |
253 |
break; |
254 |
case PHOTOMETRIC_RGB: |
255 |
SET(C_GAMMA|C_GAMUT); |
256 |
setcolrgam(cvts.gamcor); |
257 |
if (CHK(C_XYZE)) { |
258 |
comprgb2xyzmat(cvts.cmat, |
259 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
260 |
SET(C_CXFM); |
261 |
} |
262 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
263 |
hi != 3) |
264 |
quiterr("unsupported samples per pixel for RGB"); |
265 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi) || |
266 |
hi != 8) |
267 |
quiterr("unsupported bits per sample for RGB"); |
268 |
cvts.tf = RGB2Colr; |
269 |
break; |
270 |
case PHOTOMETRIC_MINISBLACK: |
271 |
SET(C_GRY|C_GAMMA|C_GAMUT); |
272 |
cvts.pconf = PLANARCONFIG_CONTIG; |
273 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
274 |
hi != 1) |
275 |
quiterr("unsupported samples per pixel for greyscale"); |
276 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi) || |
277 |
hi != 8) |
278 |
quiterr("unsupported bits per sample for greyscale"); |
279 |
cvts.tf = Gry2Colr; |
280 |
break; |
281 |
default: |
282 |
quiterr("unsupported photometric type"); |
283 |
break; |
284 |
} |
285 |
|
286 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) || |
287 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax)) |
288 |
quiterr("unknown input image resolution"); |
289 |
|
290 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits)) |
291 |
cvts.stonits = 1.; |
292 |
/* add to Radiance header */ |
293 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01) |
294 |
fputaspect(cvts.pixrat, cvts.rfp); |
295 |
if (CHK(C_XYZE)) { |
296 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp); |
297 |
fputformat(CIEFMT, cvts.rfp); |
298 |
} else { |
299 |
if (CHK(C_PRIM)) |
300 |
fputprims(cvts.prims, cvts.rfp); |
301 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits, |
302 |
cvts.rfp); |
303 |
fputformat(COLRFMT, cvts.rfp); |
304 |
} |
305 |
|
306 |
allocbufs(); /* allocate scanline buffers */ |
307 |
} |
308 |
|
309 |
|
310 |
tiff2ra(ac, av) /* convert TIFF image to Radiance picture */ |
311 |
int ac; |
312 |
char *av[]; |
313 |
{ |
314 |
int32 y; |
315 |
/* open TIFF input */ |
316 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL) |
317 |
quiterr("cannot open TIFF input"); |
318 |
/* open Radiance output */ |
319 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-")) |
320 |
cvts.rfp = stdout; |
321 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL) |
322 |
quiterr("cannot open Radiance output picture"); |
323 |
/* start output header */ |
324 |
newheader("RADIANCE", cvts.rfp); |
325 |
printargs(ac, av, cvts.rfp); |
326 |
|
327 |
initfromtif(); /* initialize conversion */ |
328 |
|
329 |
fputc('\n', cvts.rfp); /* finish Radiance header */ |
330 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp); |
331 |
|
332 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
333 |
(*cvts.tf)(y); |
334 |
/* clean up */ |
335 |
fclose(cvts.rfp); |
336 |
TIFFClose(cvts.tif); |
337 |
} |
338 |
|
339 |
|
340 |
int |
341 |
headline(s) /* process Radiance input header line */ |
342 |
char *s; |
343 |
{ |
344 |
char fmt[32]; |
345 |
|
346 |
if (formatval(fmt, s)) { |
347 |
if (!strcmp(fmt, COLRFMT)) |
348 |
CLR(C_XYZE); |
349 |
else if (!strcmp(fmt, CIEFMT)) |
350 |
SET(C_XYZE); |
351 |
else |
352 |
quiterr("unrecognized input picture format"); |
353 |
return; |
354 |
} |
355 |
if (isexpos(s)) { |
356 |
cvts.stonits /= exposval(s); |
357 |
return; |
358 |
} |
359 |
if (isaspect(s)) { |
360 |
cvts.pixrat *= aspectval(s); |
361 |
return; |
362 |
} |
363 |
if (isprims(s)) { |
364 |
primsval(cvts.prims, s); |
365 |
SET(C_PRIM); |
366 |
return; |
367 |
} |
368 |
} |
369 |
|
370 |
|
371 |
initfromrad() /* initialize input from a Radiance picture */ |
372 |
{ |
373 |
int i1, i2, po; |
374 |
/* read Radiance header */ |
375 |
CLR(C_RFLT|C_TFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM); |
376 |
cvts.stonits = 1.; |
377 |
cvts.pixrat = 1.; |
378 |
cvts.pconf = PLANARCONFIG_CONTIG; |
379 |
getheader(cvts.rfp, headline, NULL); |
380 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0) |
381 |
quiterr("bad Radiance picture"); |
382 |
cvts.xmax = i1; cvts.ymax = i2; |
383 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */ |
384 |
if (ortab[i1] == po) { |
385 |
cvts.orient = i1 + 1; |
386 |
break; |
387 |
} |
388 |
if (i1 >= 8) |
389 |
quiterr("internal error 1 in initfromrad"); |
390 |
if (!(po & YMAJOR)) |
391 |
cvts.pixrat = 1./cvts.pixrat; |
392 |
if (!CHK(C_XYZE)) |
393 |
cvts.stonits *= WHTEFFICACY; |
394 |
/* set up conversion */ |
395 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp); |
396 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, cvts.phot); |
397 |
|
398 |
switch (cvts.phot) { |
399 |
case PHOTOMETRIC_LOGLUV: |
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 |
if (cvts.comp != COMPRESSION_SGILOG && |
407 |
cvts.comp != COMPRESSION_SGILOG24) |
408 |
quiterr("internal error 2 in initfromrad"); |
409 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
410 |
SGILOGDATAFMT_FLTXYZ); |
411 |
cvts.tf = Color2Luv; |
412 |
break; |
413 |
case PHOTOMETRIC_LOGL: |
414 |
SET(C_GRY|C_RFLT|C_TFLT); |
415 |
if (cvts.comp != COMPRESSION_SGILOG) |
416 |
quiterr("internal error 3 in initfromrad"); |
417 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
418 |
SGILOGDATAFMT_FLTY); |
419 |
cvts.tf = Color2L; |
420 |
break; |
421 |
case PHOTOMETRIC_RGB: |
422 |
SET(C_GAMMA|C_GAMUT); |
423 |
CLR(C_GRY); |
424 |
setcolrgam(cvts.gamcor); |
425 |
if (CHK(C_XYZE)) { |
426 |
compxyz2rgbmat(cvts.cmat, |
427 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
428 |
SET(C_CXFM); |
429 |
} |
430 |
if (CHK(C_PRIM)) { |
431 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, |
432 |
(float *)cvts.prims); |
433 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT, |
434 |
(float *)cvts.prims[WHT]); |
435 |
} |
436 |
cvts.tf = Colr2RGB; |
437 |
break; |
438 |
case PHOTOMETRIC_MINISBLACK: |
439 |
SET(C_GRY|C_GAMMA|C_GAMUT); |
440 |
setcolrgam(cvts.gamcor); |
441 |
cvts.tf = Colr2Gry; |
442 |
break; |
443 |
default: |
444 |
quiterr("internal error 4 in initfromrad"); |
445 |
break; |
446 |
} |
447 |
/* set other TIFF fields */ |
448 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax); |
449 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax); |
450 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3); |
451 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, CHK(C_TFLT) ? 32 : 8); |
452 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.); |
453 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat); |
454 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient); |
455 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2); |
456 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf); |
457 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS, |
458 |
cvts.stonits/pow(2.,(double)cvts.bradj)); |
459 |
if (cvts.comp == COMPRESSION_NONE) |
460 |
i1 = TIFFScanlineSize(cvts.tif); |
461 |
else |
462 |
i1 = 3*cvts.xmax; /* conservative guess */ |
463 |
i2 = 8192/i1; /* compute good strip size */ |
464 |
if (i2 < 1) i2 = 1; |
465 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2); |
466 |
|
467 |
allocbufs(); /* allocate scanline buffers */ |
468 |
} |
469 |
|
470 |
|
471 |
ra2tiff(ac, av) /* convert Radiance picture to TIFF image */ |
472 |
int ac; |
473 |
char *av[]; |
474 |
{ |
475 |
uint32 y; |
476 |
/* open Radiance file */ |
477 |
if (!strcmp(av[ac], "-")) |
478 |
cvts.rfp = stdin; |
479 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL) |
480 |
quiterr("cannot open Radiance input picture"); |
481 |
/* open TIFF file */ |
482 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL) |
483 |
quiterr("cannot open TIFF output"); |
484 |
|
485 |
initfromrad(); /* initialize conversion */ |
486 |
|
487 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
488 |
(*cvts.tf)(y); |
489 |
/* clean up */ |
490 |
TIFFClose(cvts.tif); |
491 |
fclose(cvts.rfp); |
492 |
} |
493 |
|
494 |
|
495 |
int |
496 |
Luv2Color(y) /* read/convert/write Luv->COLOR scanline */ |
497 |
uint32 y; |
498 |
{ |
499 |
register int x; |
500 |
|
501 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | CHK(C_GRY)) |
502 |
quiterr("internal error 1 in Luv2Color"); |
503 |
|
504 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
505 |
quiterr("error reading TIFF input"); |
506 |
|
507 |
for (x = cvts.xmax; x--; ) { |
508 |
cvts.r.colors[x][RED] = cvts.t.fp[3*x]; |
509 |
cvts.r.colors[x][GRN] = cvts.t.fp[3*x + 1]; |
510 |
cvts.r.colors[x][BLU] = cvts.t.fp[3*x + 2]; |
511 |
if (CHK(C_CXFM)) |
512 |
colortrans(cvts.r.colors[x], cvts.cmat, |
513 |
cvts.r.colors[x]); |
514 |
if (CHK(C_GAMUT)) |
515 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
516 |
CGAMUT_LOWER, cblack, cwhite); |
517 |
} |
518 |
if (cvts.bradj) { |
519 |
double m = pow(2.,(double)cvts.bradj); |
520 |
for (x = cvts.xmax; x--; ) |
521 |
scalecolor(cvts.r.colors[x], m); |
522 |
} |
523 |
|
524 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
525 |
quiterr("error writing Radiance picture"); |
526 |
} |
527 |
|
528 |
|
529 |
int |
530 |
L2Color(y) /* read/convert/write L16->COLOR scanline */ |
531 |
uint32 y; |
532 |
{ |
533 |
register int x; |
534 |
|
535 |
if (CHK(C_RFLT|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
536 |
quiterr("internal error 1 in L2Color"); |
537 |
|
538 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
539 |
quiterr("error reading TIFF input"); |
540 |
|
541 |
for (x = cvts.xmax; x--; ) |
542 |
cvts.r.colors[x][RED] = |
543 |
cvts.r.colors[x][GRN] = |
544 |
cvts.r.colors[x][BLU] = cvts.t.fp[x] > 0. ? cvts.t.fp[x] : 0.; |
545 |
|
546 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
547 |
quiterr("error writing Radiance picture"); |
548 |
} |
549 |
|
550 |
|
551 |
int |
552 |
RGB2Colr(y) /* read/convert/write RGB->COLR scanline */ |
553 |
uint32 y; |
554 |
{ |
555 |
COLOR ctmp; |
556 |
register int x; |
557 |
|
558 |
if (CHK(C_RFLT|C_TFLT|C_GRY)) |
559 |
quiterr("internal error 1 in RGB2Colr"); |
560 |
|
561 |
if (cvts.pconf == PLANARCONFIG_CONTIG) { |
562 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
563 |
goto readerr; |
564 |
for (x = cvts.xmax; x--; ) { |
565 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x]; |
566 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1]; |
567 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2]; |
568 |
} |
569 |
} else { |
570 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
571 |
goto readerr; |
572 |
if (TIFFReadScanline(cvts.tif, |
573 |
(tidata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0) |
574 |
goto readerr; |
575 |
if (TIFFReadScanline(cvts.tif, |
576 |
(tidata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0) |
577 |
goto readerr; |
578 |
for (x = cvts.xmax; x--; ) { |
579 |
cvts.r.colrs[x][RED] = cvts.t.bp[x]; |
580 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x]; |
581 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x]; |
582 |
} |
583 |
} |
584 |
|
585 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
586 |
if (CHK(C_CXFM)) |
587 |
for (x = cvts.xmax; x--; ) { |
588 |
colr_color(ctmp, cvts.r.colrs[x]); |
589 |
colortrans(ctmp, cvts.cmat, ctmp); |
590 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */ |
591 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER, |
592 |
cblack, cwhite); |
593 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
594 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
595 |
} |
596 |
if (cvts.bradj) |
597 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
598 |
|
599 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
600 |
quiterr("error writing Radiance picture"); |
601 |
return; |
602 |
readerr: |
603 |
quiterr("error reading TIFF input"); |
604 |
} |
605 |
|
606 |
|
607 |
int |
608 |
Gry2Colr(y) /* read/convert/write G8->COLR scanline */ |
609 |
uint32 y; |
610 |
{ |
611 |
register int x; |
612 |
|
613 |
if (CHK(C_RFLT|C_TFLT) | !CHK(C_GRY)) |
614 |
quiterr("internal error 1 in Gry2Colr"); |
615 |
|
616 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
617 |
quiterr("error reading TIFF input"); |
618 |
|
619 |
for (x = cvts.xmax; x--; ) |
620 |
cvts.r.colrs[x][RED] = |
621 |
cvts.r.colrs[x][GRN] = |
622 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x]; |
623 |
|
624 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
625 |
if (cvts.bradj) |
626 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
627 |
|
628 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
629 |
quiterr("error writing Radiance picture"); |
630 |
} |
631 |
|
632 |
|
633 |
int |
634 |
Color2L(y) /* read/convert/write COLOR->L16 scanline */ |
635 |
uint32 y; |
636 |
{ |
637 |
double m = pow(2.,(double)cvts.bradj); |
638 |
register int x; |
639 |
|
640 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | !CHK(C_GRY)) |
641 |
quiterr("internal error 1 in Color2L"); |
642 |
|
643 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
644 |
quiterr("error reading Radiance picture"); |
645 |
|
646 |
for (x = cvts.xmax; x--; ) |
647 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY) |
648 |
: bright(cvts.r.colors[x]) ); |
649 |
|
650 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
651 |
quiterr("error writing TIFF output"); |
652 |
} |
653 |
|
654 |
|
655 |
int |
656 |
Color2Luv(y) /* read/convert/write COLOR->Luv scanline */ |
657 |
uint32 y; |
658 |
{ |
659 |
register int x; |
660 |
|
661 |
if (CHK(C_RFLT|C_TFLT) != (C_RFLT|C_TFLT) | CHK(C_GRY)) |
662 |
quiterr("internal error 1 in Color2Luv"); |
663 |
|
664 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
665 |
quiterr("error reading Radiance picture"); |
666 |
|
667 |
if (CHK(C_CXFM)) |
668 |
for (x = cvts.xmax; x--; ) |
669 |
colortrans(cvts.r.colors[x], cvts.cmat, |
670 |
cvts.r.colors[x]); |
671 |
if (cvts.bradj) { |
672 |
double m = pow(2.,(double)cvts.bradj); |
673 |
for (x = cvts.xmax; x--; ) |
674 |
scalecolor(cvts.r.colors[x], m); |
675 |
} |
676 |
|
677 |
for (x = cvts.xmax; x--; ) { |
678 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],RED); |
679 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],GRN); |
680 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],BLU); |
681 |
} |
682 |
|
683 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
684 |
quiterr("error writing TIFF output"); |
685 |
} |
686 |
|
687 |
|
688 |
int |
689 |
Colr2Gry(y) /* read/convert/write COLR->RGB scanline */ |
690 |
uint32 y; |
691 |
{ |
692 |
register int x; |
693 |
|
694 |
if (CHK(C_RFLT|C_TFLT) | !CHK(C_GRY)) |
695 |
quiterr("internal error 1 in Colr2Gry"); |
696 |
|
697 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
698 |
quiterr("error reading Radiance picture"); |
699 |
|
700 |
if (cvts.bradj) |
701 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
702 |
for (x = cvts.xmax; x--; ) |
703 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]); |
704 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
705 |
|
706 |
for (x = cvts.xmax; x--; ) |
707 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY); |
708 |
|
709 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
710 |
quiterr("error writing TIFF output"); |
711 |
} |
712 |
|
713 |
|
714 |
int |
715 |
Colr2RGB(y) /* read/convert/write COLR->RGB scanline */ |
716 |
uint32 y; |
717 |
{ |
718 |
COLOR ctmp; |
719 |
register int x; |
720 |
|
721 |
if (CHK(C_RFLT|C_TFLT|C_GRY)) |
722 |
quiterr("internal error 1 in Colr2RGB"); |
723 |
|
724 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
725 |
quiterr("error reading Radiance picture"); |
726 |
|
727 |
if (cvts.bradj) |
728 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
729 |
if (CHK(C_CXFM)) |
730 |
for (x = cvts.xmax; x--; ) { |
731 |
colr_color(ctmp, cvts.r.colrs[x]); |
732 |
colortrans(ctmp, cvts.cmat, ctmp); |
733 |
if (CHK(C_GAMUT)) |
734 |
clipgamut(ctmp, bright(ctmp), CGAMUT, |
735 |
cblack, cwhite); |
736 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
737 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
738 |
} |
739 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
740 |
|
741 |
for (x = cvts.xmax; x--; ) { |
742 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED]; |
743 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN]; |
744 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU]; |
745 |
} |
746 |
|
747 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
748 |
quiterr("error writing TIFF output"); |
749 |
} |