1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ra_tiff.c,v 2.20 2003/02/22 02:07:28 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 <time.h> |
13 |
#include "tiffio.h" |
14 |
#include "color.h" |
15 |
#include "resolu.h" |
16 |
|
17 |
#define GAMCOR 2.2 /* default gamma */ |
18 |
|
19 |
/* conversion flags */ |
20 |
#define C_CXFM 0x1 /* needs color transformation */ |
21 |
#define C_GAMUT 0x2 /* needs gamut mapping */ |
22 |
#define C_GAMMA 0x4 /* needs gamma correction */ |
23 |
#define C_GRY 0x8 /* TIFF is greyscale */ |
24 |
#define C_XYZE 0x10 /* Radiance is XYZE */ |
25 |
#define C_RFLT 0x20 /* Radiance data is float */ |
26 |
#define C_TFLT 0x40 /* TIFF data is float */ |
27 |
#define C_TWRD 0x80 /* TIFF data is 16-bit */ |
28 |
#define C_PRIM 0x100 /* has assigned primaries */ |
29 |
|
30 |
struct { |
31 |
uint16 flags; /* conversion flags (defined above) */ |
32 |
uint16 comp; /* TIFF compression type */ |
33 |
uint16 phot; /* TIFF photometric type */ |
34 |
uint16 pconf; /* TIFF planar configuration */ |
35 |
float gamcor; /* gamma correction value */ |
36 |
short bradj; /* Radiance exposure adjustment (stops) */ |
37 |
uint16 orient; /* visual orientation (TIFF spec.) */ |
38 |
double stonits; /* input conversion to nits */ |
39 |
float pixrat; /* pixel aspect ratio */ |
40 |
FILE *rfp; /* Radiance stream pointer */ |
41 |
TIFF *tif; /* TIFF pointer */ |
42 |
uint32 xmax, ymax; /* image dimensions */ |
43 |
COLORMAT cmat; /* color transformation matrix */ |
44 |
RGBPRIMS prims; /* RGB primaries */ |
45 |
union { |
46 |
COLR *colrs; /* 4-byte ???E pointer */ |
47 |
COLOR *colors; /* float array pointer */ |
48 |
char *p; /* generic pointer */ |
49 |
} r; /* Radiance scanline */ |
50 |
union { |
51 |
uint8 *bp; /* byte pointer */ |
52 |
uint16 *wp; /* word pointer */ |
53 |
float *fp; /* float pointer */ |
54 |
char *p; /* generic pointer */ |
55 |
} t; /* TIFF scanline */ |
56 |
void (*tf)(); /* translation procedure */ |
57 |
} cvts = { /* conversion structure */ |
58 |
0, COMPRESSION_NONE, PHOTOMETRIC_RGB, |
59 |
PLANARCONFIG_CONTIG, GAMCOR, 0, 1, 1., 1., |
60 |
}; |
61 |
|
62 |
#define CHK(f) (cvts.flags & (f)) |
63 |
#define SET(f) (cvts.flags |= (f)) |
64 |
#define CLR(f) (cvts.flags &= ~(f)) |
65 |
#define TGL(f) (cvts.flags ^= (f)) |
66 |
|
67 |
void Luv2Color(), L2Color(), RGB2Colr(), Gry2Colr(); |
68 |
void Color2Luv(), Color2L(), Colr2RGB(), Colr2Gry(); |
69 |
void RRGGBB2Color(), GGry2Color(), Color2RRGGBB(), Color2GGry(); |
70 |
|
71 |
#define RfGfBf2Color Luv2Color |
72 |
#define Gryf2Color L2Color |
73 |
#define Color2Gryf Color2L |
74 |
#define Color2RfGfBf Color2Luv |
75 |
|
76 |
short ortab[8] = { /* orientation conversion table */ |
77 |
YMAJOR|YDECR, |
78 |
YMAJOR|YDECR|XDECR, |
79 |
YMAJOR|XDECR, |
80 |
YMAJOR, |
81 |
YDECR, |
82 |
XDECR|YDECR, |
83 |
XDECR, |
84 |
0 |
85 |
}; |
86 |
|
87 |
#define pixorder() ortab[cvts.orient-1] |
88 |
|
89 |
char *progname; |
90 |
|
91 |
|
92 |
main(argc, argv) |
93 |
int argc; |
94 |
char *argv[]; |
95 |
{ |
96 |
int reverse = 0; |
97 |
int i; |
98 |
|
99 |
progname = argv[0]; |
100 |
|
101 |
for (i = 1; i < argc; i++) |
102 |
if (argv[i][0] == '-') |
103 |
switch (argv[i][1]) { |
104 |
case 'g': /* gamma correction */ |
105 |
cvts.gamcor = atof(argv[++i]); |
106 |
break; |
107 |
case 'x': /* XYZE Radiance output */ |
108 |
TGL(C_XYZE); |
109 |
break; |
110 |
case 'z': /* LZW compressed output */ |
111 |
cvts.comp = COMPRESSION_LZW; |
112 |
break; |
113 |
case 'L': /* LogLuv 32-bit output */ |
114 |
cvts.comp = COMPRESSION_SGILOG; |
115 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
116 |
break; |
117 |
case 'l': /* LogLuv 24-bit output */ |
118 |
cvts.comp = COMPRESSION_SGILOG24; |
119 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
120 |
break; |
121 |
case 'w': /* 16-bit/primary output? */ |
122 |
TGL(C_TWRD); |
123 |
break; |
124 |
case 'f': /* IEEE float output? */ |
125 |
TGL(C_TFLT); |
126 |
break; |
127 |
case 'b': /* greyscale output? */ |
128 |
TGL(C_GRY); |
129 |
break; |
130 |
case 'e': /* exposure adjustment */ |
131 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
132 |
goto userr; |
133 |
cvts.bradj = atoi(argv[++i]); |
134 |
break; |
135 |
case 'r': /* reverse conversion? */ |
136 |
reverse = !reverse; |
137 |
break; |
138 |
case '\0': |
139 |
goto doneopts; |
140 |
default: |
141 |
goto userr; |
142 |
} |
143 |
else |
144 |
break; |
145 |
doneopts: |
146 |
if (reverse) { |
147 |
|
148 |
if (i != argc-2 && i != argc-1) |
149 |
goto userr; |
150 |
|
151 |
tiff2ra(i, argv); |
152 |
|
153 |
} else { |
154 |
|
155 |
if (i != argc-2) |
156 |
goto userr; |
157 |
/* consistency checks */ |
158 |
if (CHK(C_GRY)) |
159 |
if (cvts.phot == PHOTOMETRIC_RGB) |
160 |
cvts.phot = PHOTOMETRIC_MINISBLACK; |
161 |
else { |
162 |
cvts.phot = PHOTOMETRIC_LOGL; |
163 |
cvts.comp = COMPRESSION_SGILOG; |
164 |
} |
165 |
if (CHK(C_TWRD|C_TFLT) == (C_TWRD|C_TFLT)) |
166 |
goto userr; |
167 |
|
168 |
ra2tiff(i, argv); |
169 |
} |
170 |
|
171 |
exit(0); |
172 |
userr: |
173 |
fprintf(stderr, |
174 |
"Usage: %s [-z|-L|-l|-f|-w][-b][-e +/-stops][-g gamma] {in.pic|-} out.tif\n", |
175 |
progname); |
176 |
fprintf(stderr, |
177 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.pic|-]\n", |
178 |
progname); |
179 |
exit(1); |
180 |
} |
181 |
|
182 |
|
183 |
quiterr(err) /* print message and exit */ |
184 |
char *err; |
185 |
{ |
186 |
if (err != NULL) { |
187 |
fprintf(stderr, "%s: %s\n", progname, err); |
188 |
exit(1); |
189 |
} |
190 |
exit(0); |
191 |
} |
192 |
|
193 |
|
194 |
allocbufs() /* allocate scanline buffers */ |
195 |
{ |
196 |
int rsiz, tsiz; |
197 |
|
198 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR); |
199 |
tsiz = (CHK(C_TFLT) ? sizeof(float) : |
200 |
CHK(C_TWRD) ? sizeof(uint16) : sizeof(uint8)) * |
201 |
(CHK(C_GRY) ? 1 : 3); |
202 |
cvts.r.p = (char *)malloc(rsiz*cvts.xmax); |
203 |
cvts.t.p = (char *)malloc(tsiz*cvts.xmax); |
204 |
if (cvts.r.p == NULL | cvts.t.p == NULL) |
205 |
quiterr("no memory to allocate scanline buffers"); |
206 |
} |
207 |
|
208 |
|
209 |
initfromtif() /* initialize conversion from TIFF input */ |
210 |
{ |
211 |
uint16 hi; |
212 |
float *fa, f1, f2; |
213 |
|
214 |
CLR(C_GRY|C_GAMMA|C_PRIM|C_RFLT|C_TFLT|C_TWRD|C_CXFM); |
215 |
|
216 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PLANARCONFIG, &cvts.pconf); |
217 |
|
218 |
if (TIFFGetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, &fa)) { |
219 |
cvts.prims[RED][CIEX] = fa[0]; |
220 |
cvts.prims[RED][CIEY] = fa[1]; |
221 |
cvts.prims[GRN][CIEX] = fa[2]; |
222 |
cvts.prims[GRN][CIEY] = fa[3]; |
223 |
cvts.prims[BLU][CIEX] = fa[4]; |
224 |
cvts.prims[BLU][CIEY] = fa[5]; |
225 |
cvts.prims[WHT][CIEX] = 1./3.; |
226 |
cvts.prims[WHT][CIEY] = 1./3.; |
227 |
if (TIFFGetField(cvts.tif, TIFFTAG_WHITEPOINT, &fa)) { |
228 |
cvts.prims[WHT][CIEX] = fa[0]; |
229 |
cvts.prims[WHT][CIEY] = fa[1]; |
230 |
} |
231 |
SET(C_PRIM); |
232 |
} |
233 |
|
234 |
if (!TIFFGetField(cvts.tif, TIFFTAG_COMPRESSION, &cvts.comp)) |
235 |
cvts.comp = COMPRESSION_NONE; |
236 |
|
237 |
if (TIFFGetField(cvts.tif, TIFFTAG_XRESOLUTION, &f1) && |
238 |
TIFFGetField(cvts.tif, TIFFTAG_YRESOLUTION, &f2)) |
239 |
cvts.pixrat = f1/f2; |
240 |
|
241 |
TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_ORIENTATION, &cvts.orient); |
242 |
|
243 |
if (!TIFFGetFieldDefaulted(cvts.tif, TIFFTAG_PHOTOMETRIC, &cvts.phot)) |
244 |
quiterr("TIFF has unspecified photometric type"); |
245 |
|
246 |
switch (cvts.phot) { |
247 |
case PHOTOMETRIC_LOGLUV: |
248 |
SET(C_RFLT|C_TFLT); |
249 |
if (!CHK(C_XYZE)) { |
250 |
cpcolormat(cvts.cmat, xyz2rgbmat); |
251 |
SET(C_CXFM|C_GAMUT); |
252 |
} else if (cvts.comp == COMPRESSION_SGILOG) |
253 |
SET(C_GAMUT); |
254 |
if (cvts.pconf != PLANARCONFIG_CONTIG) |
255 |
quiterr("cannot handle separate Luv planes"); |
256 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
257 |
SGILOGDATAFMT_FLOAT); |
258 |
cvts.tf = Luv2Color; |
259 |
break; |
260 |
case PHOTOMETRIC_LOGL: |
261 |
SET(C_GRY|C_RFLT|C_TFLT|C_GAMUT); |
262 |
cvts.pconf = PLANARCONFIG_CONTIG; |
263 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
264 |
SGILOGDATAFMT_FLOAT); |
265 |
cvts.tf = L2Color; |
266 |
break; |
267 |
case PHOTOMETRIC_YCBCR: |
268 |
if (cvts.comp == COMPRESSION_JPEG && |
269 |
cvts.pconf == PLANARCONFIG_CONTIG) { |
270 |
TIFFSetField(cvts.tif, TIFFTAG_JPEGCOLORMODE, |
271 |
JPEGCOLORMODE_RGB); |
272 |
cvts.phot = PHOTOMETRIC_RGB; |
273 |
} else |
274 |
quiterr("unsupported photometric type"); |
275 |
/* fall through */ |
276 |
case PHOTOMETRIC_RGB: |
277 |
SET(C_GAMMA); |
278 |
setcolrgam(cvts.gamcor); |
279 |
if (CHK(C_XYZE)) { |
280 |
comprgb2xyzWBmat(cvts.cmat, |
281 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
282 |
SET(C_CXFM); |
283 |
} |
284 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
285 |
hi != 3) |
286 |
quiterr("unsupported samples per pixel for RGB"); |
287 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi)) |
288 |
hi = -1; |
289 |
switch (hi) { |
290 |
case 8: |
291 |
cvts.tf = RGB2Colr; |
292 |
break; |
293 |
case 16: |
294 |
cvts.tf = RRGGBB2Color; |
295 |
SET(C_RFLT|C_TWRD); |
296 |
break; |
297 |
case 32: |
298 |
cvts.tf = RfGfBf2Color; |
299 |
SET(C_RFLT|C_TFLT); |
300 |
break; |
301 |
default: |
302 |
quiterr("unsupported bits per sample for RGB"); |
303 |
} |
304 |
break; |
305 |
case PHOTOMETRIC_MINISBLACK: |
306 |
SET(C_GRY|C_GAMMA); |
307 |
setcolrgam(cvts.gamcor); |
308 |
cvts.pconf = PLANARCONFIG_CONTIG; |
309 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
310 |
hi != 1) |
311 |
quiterr("unsupported samples per pixel for greyscale"); |
312 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi)) |
313 |
hi = -1; |
314 |
switch (hi) { |
315 |
case 8: |
316 |
cvts.tf = Gry2Colr; |
317 |
break; |
318 |
case 16: |
319 |
cvts.tf = GGry2Color; |
320 |
SET(C_RFLT|C_TWRD); |
321 |
break; |
322 |
case 32: |
323 |
cvts.tf = Gryf2Color; |
324 |
SET(C_RFLT|C_TFLT); |
325 |
break; |
326 |
default: |
327 |
quiterr("unsupported bits per sample for Gray"); |
328 |
} |
329 |
break; |
330 |
default: |
331 |
quiterr("unsupported photometric type"); |
332 |
break; |
333 |
} |
334 |
|
335 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) || |
336 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax)) |
337 |
quiterr("unknown input image resolution"); |
338 |
|
339 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits)) |
340 |
cvts.stonits = 1.; |
341 |
/* add to Radiance header */ |
342 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01) |
343 |
fputaspect(cvts.pixrat, cvts.rfp); |
344 |
if (CHK(C_XYZE)) { |
345 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp); |
346 |
fputformat(CIEFMT, cvts.rfp); |
347 |
} else { |
348 |
if (CHK(C_PRIM)) |
349 |
fputprims(cvts.prims, cvts.rfp); |
350 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits, |
351 |
cvts.rfp); |
352 |
fputformat(COLRFMT, cvts.rfp); |
353 |
} |
354 |
|
355 |
allocbufs(); /* allocate scanline buffers */ |
356 |
} |
357 |
|
358 |
|
359 |
tiff2ra(ac, av) /* convert TIFF image to Radiance picture */ |
360 |
int ac; |
361 |
char *av[]; |
362 |
{ |
363 |
int32 y; |
364 |
/* open TIFF input */ |
365 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL) |
366 |
quiterr("cannot open TIFF input"); |
367 |
/* open Radiance output */ |
368 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-")) |
369 |
cvts.rfp = stdout; |
370 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL) |
371 |
quiterr("cannot open Radiance output picture"); |
372 |
/* start output header */ |
373 |
newheader("RADIANCE", cvts.rfp); |
374 |
printargs(ac, av, cvts.rfp); |
375 |
|
376 |
initfromtif(); /* initialize conversion */ |
377 |
|
378 |
fputc('\n', cvts.rfp); /* finish Radiance header */ |
379 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp); |
380 |
|
381 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
382 |
(*cvts.tf)(y); |
383 |
/* clean up */ |
384 |
fclose(cvts.rfp); |
385 |
TIFFClose(cvts.tif); |
386 |
} |
387 |
|
388 |
|
389 |
int |
390 |
headline(s) /* process Radiance input header line */ |
391 |
char *s; |
392 |
{ |
393 |
char fmt[32]; |
394 |
|
395 |
if (formatval(fmt, s)) { |
396 |
if (!strcmp(fmt, COLRFMT)) |
397 |
CLR(C_XYZE); |
398 |
else if (!strcmp(fmt, CIEFMT)) |
399 |
SET(C_XYZE); |
400 |
else |
401 |
quiterr("unrecognized input picture format"); |
402 |
return(1); |
403 |
} |
404 |
if (isexpos(s)) { |
405 |
cvts.stonits /= exposval(s); |
406 |
return(1); |
407 |
} |
408 |
if (isaspect(s)) { |
409 |
cvts.pixrat *= aspectval(s); |
410 |
return(1); |
411 |
} |
412 |
if (isprims(s)) { |
413 |
primsval(cvts.prims, s); |
414 |
SET(C_PRIM); |
415 |
return(1); |
416 |
} |
417 |
return(0); |
418 |
} |
419 |
|
420 |
|
421 |
initfromrad() /* initialize input from a Radiance picture */ |
422 |
{ |
423 |
int i1, i2, po; |
424 |
/* read Radiance header */ |
425 |
CLR(C_RFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM); |
426 |
cvts.stonits = 1.; |
427 |
cvts.pixrat = 1.; |
428 |
cvts.pconf = PLANARCONFIG_CONTIG; |
429 |
getheader(cvts.rfp, headline, NULL); |
430 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0) |
431 |
quiterr("bad Radiance picture"); |
432 |
cvts.xmax = i1; cvts.ymax = i2; |
433 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */ |
434 |
if (ortab[i1] == po) { |
435 |
cvts.orient = i1 + 1; |
436 |
break; |
437 |
} |
438 |
if (i1 >= 8) |
439 |
quiterr("internal error 1 in initfromrad"); |
440 |
if (!(po & YMAJOR)) |
441 |
cvts.pixrat = 1./cvts.pixrat; |
442 |
if (!CHK(C_XYZE)) |
443 |
cvts.stonits *= WHTEFFICACY; |
444 |
/* set up conversion */ |
445 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp); |
446 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, cvts.phot); |
447 |
|
448 |
switch (cvts.phot) { |
449 |
case PHOTOMETRIC_LOGLUV: |
450 |
SET(C_RFLT|C_TFLT); |
451 |
CLR(C_GRY|C_TWRD); |
452 |
if (!CHK(C_XYZE)) { |
453 |
comprgb2xyzWBmat(cvts.cmat, |
454 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
455 |
SET(C_CXFM); |
456 |
} |
457 |
if (cvts.comp != COMPRESSION_SGILOG && |
458 |
cvts.comp != COMPRESSION_SGILOG24) |
459 |
quiterr("internal error 2 in initfromrad"); |
460 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
461 |
SGILOGDATAFMT_FLOAT); |
462 |
cvts.tf = Color2Luv; |
463 |
break; |
464 |
case PHOTOMETRIC_LOGL: |
465 |
SET(C_GRY|C_RFLT|C_TFLT); |
466 |
CLR(C_TWRD); |
467 |
if (cvts.comp != COMPRESSION_SGILOG) |
468 |
quiterr("internal error 3 in initfromrad"); |
469 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
470 |
SGILOGDATAFMT_FLOAT); |
471 |
cvts.tf = Color2L; |
472 |
break; |
473 |
case PHOTOMETRIC_RGB: |
474 |
SET(C_GAMMA|C_GAMUT); |
475 |
CLR(C_GRY); |
476 |
setcolrgam(cvts.gamcor); |
477 |
if (CHK(C_XYZE)) { |
478 |
compxyz2rgbWBmat(cvts.cmat, |
479 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
480 |
SET(C_CXFM); |
481 |
} |
482 |
if (CHK(C_PRIM)) { |
483 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, |
484 |
(float *)cvts.prims); |
485 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT, |
486 |
(float *)cvts.prims[WHT]); |
487 |
} |
488 |
if (CHK(C_TWRD)) { |
489 |
cvts.tf = Color2RRGGBB; |
490 |
SET(C_RFLT); |
491 |
} else if (CHK(C_TFLT)) { |
492 |
cvts.tf = Color2RfGfBf; |
493 |
SET(C_RFLT); |
494 |
} else |
495 |
cvts.tf = Colr2RGB; |
496 |
break; |
497 |
case PHOTOMETRIC_MINISBLACK: |
498 |
SET(C_GRY|C_GAMMA|C_GAMUT); |
499 |
setcolrgam(cvts.gamcor); |
500 |
if (CHK(C_TWRD)) { |
501 |
cvts.tf = Color2GGry; |
502 |
SET(C_RFLT); |
503 |
} else if (CHK(C_TFLT)) { |
504 |
cvts.tf = Color2Gryf; |
505 |
SET(C_RFLT); |
506 |
} else |
507 |
cvts.tf = Colr2Gry; |
508 |
break; |
509 |
default: |
510 |
quiterr("internal error 4 in initfromrad"); |
511 |
break; |
512 |
} |
513 |
/* set other TIFF fields */ |
514 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax); |
515 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax); |
516 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3); |
517 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, |
518 |
CHK(C_TFLT) ? 32 : CHK(C_TWRD) ? 16 : 8); |
519 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.); |
520 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat); |
521 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient); |
522 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2); |
523 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf); |
524 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS, |
525 |
cvts.stonits/pow(2.,(double)cvts.bradj)); |
526 |
if (cvts.comp == COMPRESSION_NONE) |
527 |
i1 = TIFFScanlineSize(cvts.tif); |
528 |
else |
529 |
i1 = 3*cvts.xmax; /* conservative guess */ |
530 |
i2 = 8192/i1; /* compute good strip size */ |
531 |
if (i2 < 1) i2 = 1; |
532 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2); |
533 |
|
534 |
allocbufs(); /* allocate scanline buffers */ |
535 |
} |
536 |
|
537 |
|
538 |
ra2tiff(ac, av) /* convert Radiance picture to TIFF image */ |
539 |
int ac; |
540 |
char *av[]; |
541 |
{ |
542 |
uint32 y; |
543 |
/* open Radiance file */ |
544 |
if (!strcmp(av[ac], "-")) |
545 |
cvts.rfp = stdin; |
546 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL) |
547 |
quiterr("cannot open Radiance input picture"); |
548 |
/* open TIFF file */ |
549 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL) |
550 |
quiterr("cannot open TIFF output"); |
551 |
|
552 |
initfromrad(); /* initialize conversion */ |
553 |
|
554 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
555 |
(*cvts.tf)(y); |
556 |
/* clean up */ |
557 |
TIFFClose(cvts.tif); |
558 |
fclose(cvts.rfp); |
559 |
} |
560 |
|
561 |
|
562 |
void |
563 |
Luv2Color(y) /* read/convert/write Luv->COLOR scanline */ |
564 |
uint32 y; |
565 |
{ |
566 |
register int x; |
567 |
|
568 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
569 |
quiterr("internal error 1 in Luv2Color"); |
570 |
|
571 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
572 |
quiterr("error reading TIFF input"); |
573 |
/* also works for float RGB */ |
574 |
for (x = cvts.xmax; x--; ) { |
575 |
setcolor(cvts.r.colors[x], |
576 |
cvts.t.fp[3*x], |
577 |
cvts.t.fp[3*x + 1], |
578 |
cvts.t.fp[3*x + 2]); |
579 |
if (CHK(C_CXFM)) |
580 |
colortrans(cvts.r.colors[x], cvts.cmat, |
581 |
cvts.r.colors[x]); |
582 |
if (CHK(C_GAMUT)) |
583 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
584 |
CGAMUT_LOWER, cblack, cwhite); |
585 |
} |
586 |
if (cvts.bradj) { |
587 |
double m = pow(2.,(double)cvts.bradj); |
588 |
for (x = cvts.xmax; x--; ) |
589 |
scalecolor(cvts.r.colors[x], m); |
590 |
} |
591 |
|
592 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
593 |
quiterr("error writing Radiance picture"); |
594 |
} |
595 |
|
596 |
|
597 |
void |
598 |
RRGGBB2Color(y) /* read/convert/write RGB16->COLOR scanline */ |
599 |
uint32 y; |
600 |
{ |
601 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
602 |
register double d; |
603 |
register int x; |
604 |
|
605 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_TWRD|C_RFLT)) |
606 |
quiterr("internal error 1 in RRGGBB2Color"); |
607 |
|
608 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
609 |
quiterr("error reading TIFF input"); |
610 |
|
611 |
for (x = cvts.xmax; x--; ) { |
612 |
d = (cvts.t.wp[3*x] + 0.5)*(1./(1L<<16)); |
613 |
if (dogamma) d = pow(d, cvts.gamcor); |
614 |
colval(cvts.r.colors[x],RED) = d; |
615 |
d = (cvts.t.wp[3*x + 1] + 0.5)*(1./(1L<<16)); |
616 |
if (dogamma) d = pow(d, cvts.gamcor); |
617 |
colval(cvts.r.colors[x],GRN) = d; |
618 |
d = (cvts.t.wp[3*x + 2] + 0.5)*(1./(1L<<16)); |
619 |
if (dogamma) d = pow(d, cvts.gamcor); |
620 |
colval(cvts.r.colors[x],BLU) = d; |
621 |
if (CHK(C_CXFM)) |
622 |
colortrans(cvts.r.colors[x], cvts.cmat, |
623 |
cvts.r.colors[x]); |
624 |
if (CHK(C_GAMUT)) |
625 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
626 |
CGAMUT_LOWER, cblack, cwhite); |
627 |
} |
628 |
if (cvts.bradj) { |
629 |
d = pow(2.,(double)cvts.bradj); |
630 |
for (x = cvts.xmax; x--; ) |
631 |
scalecolor(cvts.r.colors[x], d); |
632 |
} |
633 |
|
634 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
635 |
quiterr("error writing Radiance picture"); |
636 |
} |
637 |
|
638 |
|
639 |
void |
640 |
L2Color(y) /* read/convert/write Lfloat->COLOR scanline */ |
641 |
uint32 y; |
642 |
{ |
643 |
float m = pow(2., (double)cvts.bradj); |
644 |
register int x; |
645 |
|
646 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
647 |
quiterr("internal error 1 in L2Color"); |
648 |
|
649 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
650 |
quiterr("error reading TIFF input"); |
651 |
/* also works for float greyscale */ |
652 |
for (x = cvts.xmax; x--; ) { |
653 |
register float f = cvts.t.fp[x]; |
654 |
if (cvts.bradj) f *= m; |
655 |
setcolor(cvts.r.colors[x], f, f, f); |
656 |
} |
657 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
658 |
quiterr("error writing Radiance picture"); |
659 |
} |
660 |
|
661 |
|
662 |
void |
663 |
RGB2Colr(y) /* read/convert/write RGB->COLR scanline */ |
664 |
uint32 y; |
665 |
{ |
666 |
COLOR ctmp; |
667 |
register int x; |
668 |
|
669 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY)) |
670 |
quiterr("internal error 1 in RGB2Colr"); |
671 |
|
672 |
if (cvts.pconf == PLANARCONFIG_CONTIG) { |
673 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
674 |
goto readerr; |
675 |
for (x = cvts.xmax; x--; ) { |
676 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x]; |
677 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1]; |
678 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2]; |
679 |
} |
680 |
} else { |
681 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
682 |
goto readerr; |
683 |
if (TIFFReadScanline(cvts.tif, |
684 |
(tdata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0) |
685 |
goto readerr; |
686 |
if (TIFFReadScanline(cvts.tif, |
687 |
(tdata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0) |
688 |
goto readerr; |
689 |
for (x = cvts.xmax; x--; ) { |
690 |
cvts.r.colrs[x][RED] = cvts.t.bp[x]; |
691 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x]; |
692 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x]; |
693 |
} |
694 |
} |
695 |
|
696 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
697 |
if (CHK(C_CXFM)) |
698 |
for (x = cvts.xmax; x--; ) { |
699 |
colr_color(ctmp, cvts.r.colrs[x]); |
700 |
colortrans(ctmp, cvts.cmat, ctmp); |
701 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */ |
702 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER, |
703 |
cblack, cwhite); |
704 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
705 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
706 |
} |
707 |
if (cvts.bradj) |
708 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
709 |
|
710 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
711 |
quiterr("error writing Radiance picture"); |
712 |
return; |
713 |
readerr: |
714 |
quiterr("error reading TIFF input"); |
715 |
} |
716 |
|
717 |
|
718 |
void |
719 |
Gry2Colr(y) /* read/convert/write G8->COLR scanline */ |
720 |
uint32 y; |
721 |
{ |
722 |
register int x; |
723 |
|
724 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
725 |
quiterr("internal error 1 in Gry2Colr"); |
726 |
|
727 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
728 |
quiterr("error reading TIFF input"); |
729 |
|
730 |
for (x = cvts.xmax; x--; ) |
731 |
cvts.r.colrs[x][RED] = |
732 |
cvts.r.colrs[x][GRN] = |
733 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x]; |
734 |
|
735 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
736 |
if (cvts.bradj) |
737 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
738 |
|
739 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
740 |
quiterr("error writing Radiance picture"); |
741 |
} |
742 |
|
743 |
|
744 |
void |
745 |
GGry2Color(y) /* read/convert/write G16->COLOR scanline */ |
746 |
uint32 y; |
747 |
{ |
748 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
749 |
double m; |
750 |
register double d; |
751 |
register int x; |
752 |
|
753 |
if (CHK(C_TFLT|C_TWRD|C_GRY|C_RFLT) != (C_GRY|C_RFLT|C_TWRD)) |
754 |
quiterr("internal error 1 in GGry2Color"); |
755 |
|
756 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
757 |
quiterr("error reading TIFF input"); |
758 |
|
759 |
if (cvts.bradj) |
760 |
m = pow(2., (double)cvts.bradj); |
761 |
for (x = cvts.xmax; x--; ) { |
762 |
d = (cvts.t.wp[x] + 0.5)*(1./(1L<<16)); |
763 |
if (dogamma) d = pow(d, cvts.gamcor); |
764 |
if (cvts.bradj) d *= m; |
765 |
colval(cvts.r.colors[x],RED) = |
766 |
colval(cvts.r.colors[x],GRN) = |
767 |
colval(cvts.r.colors[x],BLU) = d; |
768 |
} |
769 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
770 |
quiterr("error writing Radiance picture"); |
771 |
} |
772 |
|
773 |
|
774 |
void |
775 |
Color2GGry(y) /* read/convert/write COLOR->G16 scanline */ |
776 |
uint32 y; |
777 |
{ |
778 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
779 |
float m = pow(2.,(double)cvts.bradj); |
780 |
register int x; |
781 |
|
782 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD|C_GRY)) |
783 |
quiterr("internal error 1 in Color2GGry"); |
784 |
|
785 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
786 |
quiterr("error reading Radiance picture"); |
787 |
|
788 |
for (x = cvts.xmax; x--; ) { |
789 |
register float f = m*( CHK(C_XYZE) ? |
790 |
colval(cvts.r.colors[x],CIEY) |
791 |
: bright(cvts.r.colors[x]) ); |
792 |
if (f <= 0) |
793 |
cvts.t.wp[x] = 0; |
794 |
else if (f >= 1) |
795 |
cvts.t.wp[x] = 0xffff; |
796 |
else if (dogamma) |
797 |
cvts.t.wp[x] = (int)((float)(1L<<16) * |
798 |
pow(f, 1./cvts.gamcor)); |
799 |
else |
800 |
cvts.t.wp[x] = (int)((float)(1L<<16) * f); |
801 |
} |
802 |
|
803 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
804 |
quiterr("error writing TIFF output"); |
805 |
} |
806 |
|
807 |
|
808 |
void |
809 |
Color2L(y) /* read/convert/write COLOR->Lfloat scanline */ |
810 |
uint32 y; |
811 |
{ |
812 |
float m = pow(2.,(double)cvts.bradj); |
813 |
register int x; |
814 |
|
815 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
816 |
quiterr("internal error 1 in Color2L"); |
817 |
|
818 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
819 |
quiterr("error reading Radiance picture"); |
820 |
|
821 |
for (x = cvts.xmax; x--; ) |
822 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY) |
823 |
: bright(cvts.r.colors[x]) ); |
824 |
|
825 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
826 |
quiterr("error writing TIFF output"); |
827 |
} |
828 |
|
829 |
|
830 |
void |
831 |
Color2Luv(y) /* read/convert/write COLOR->Luv scanline */ |
832 |
uint32 y; |
833 |
{ |
834 |
register int x; |
835 |
|
836 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
837 |
quiterr("internal error 1 in Color2Luv"); |
838 |
|
839 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
840 |
quiterr("error reading Radiance picture"); |
841 |
|
842 |
if (CHK(C_CXFM)) |
843 |
for (x = cvts.xmax; x--; ) |
844 |
colortrans(cvts.r.colors[x], cvts.cmat, |
845 |
cvts.r.colors[x]); |
846 |
if (cvts.bradj) { |
847 |
double m = pow(2.,(double)cvts.bradj); |
848 |
for (x = cvts.xmax; x--; ) |
849 |
scalecolor(cvts.r.colors[x], m); |
850 |
} |
851 |
/* also works for float RGB */ |
852 |
for (x = cvts.xmax; x--; ) { |
853 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],CIEX); |
854 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],CIEY); |
855 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],CIEZ); |
856 |
} |
857 |
|
858 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
859 |
quiterr("error writing TIFF output"); |
860 |
} |
861 |
|
862 |
|
863 |
void |
864 |
Color2RRGGBB(y) /* read/convert/write COLOR->RGB16 scanline */ |
865 |
uint32 y; |
866 |
{ |
867 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
868 |
float m = pow(2.,(double)cvts.bradj); |
869 |
register int x, i; |
870 |
|
871 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TWRD)) |
872 |
quiterr("internal error 1 in Color2RRGGBB"); |
873 |
|
874 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
875 |
quiterr("error reading Radiance picture"); |
876 |
|
877 |
for (x = cvts.xmax; x--; ) |
878 |
for (i = 3; i--; ) { |
879 |
register float f = m*colval(cvts.r.colors[x],i); |
880 |
if (f <= 0) |
881 |
cvts.t.wp[3*x + i] = 0; |
882 |
else if (f >= 1) |
883 |
cvts.t.wp[3*x + i] = 0xffff; |
884 |
else if (dogamma) |
885 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16) * |
886 |
pow(f, 1./cvts.gamcor)); |
887 |
else |
888 |
cvts.t.wp[3*x + i] = (int)((float)(1L<<16)*f); |
889 |
} |
890 |
|
891 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
892 |
quiterr("error writing TIFF output"); |
893 |
} |
894 |
|
895 |
|
896 |
void |
897 |
Colr2Gry(y) /* read/convert/write COLR->RGB scanline */ |
898 |
uint32 y; |
899 |
{ |
900 |
register int x; |
901 |
|
902 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
903 |
quiterr("internal error 1 in Colr2Gry"); |
904 |
|
905 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
906 |
quiterr("error reading Radiance picture"); |
907 |
|
908 |
if (cvts.bradj) |
909 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
910 |
for (x = cvts.xmax; x--; ) |
911 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]); |
912 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
913 |
|
914 |
for (x = cvts.xmax; x--; ) |
915 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY); |
916 |
|
917 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
918 |
quiterr("error writing TIFF output"); |
919 |
} |
920 |
|
921 |
|
922 |
void |
923 |
Colr2RGB(y) /* read/convert/write COLR->RGB scanline */ |
924 |
uint32 y; |
925 |
{ |
926 |
COLOR ctmp; |
927 |
register int x; |
928 |
|
929 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY)) |
930 |
quiterr("internal error 1 in Colr2RGB"); |
931 |
|
932 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
933 |
quiterr("error reading Radiance picture"); |
934 |
|
935 |
if (cvts.bradj) |
936 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
937 |
if (CHK(C_CXFM)) |
938 |
for (x = cvts.xmax; x--; ) { |
939 |
colr_color(ctmp, cvts.r.colrs[x]); |
940 |
colortrans(ctmp, cvts.cmat, ctmp); |
941 |
if (CHK(C_GAMUT)) |
942 |
clipgamut(ctmp, bright(ctmp), CGAMUT, |
943 |
cblack, cwhite); |
944 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
945 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
946 |
} |
947 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
948 |
|
949 |
for (x = cvts.xmax; x--; ) { |
950 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED]; |
951 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN]; |
952 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU]; |
953 |
} |
954 |
|
955 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
956 |
quiterr("error writing TIFF output"); |
957 |
} |