1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id$"; |
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 |
int (*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 |
int Luv2Color(), L2Color(), RGB2Colr(), Gry2Colr(); |
68 |
int Color2Luv(), Color2L(), Colr2RGB(), Colr2Gry(); |
69 |
int RRGGBB2Color(), GGry2Color(); |
70 |
|
71 |
short ortab[8] = { /* orientation conversion table */ |
72 |
YMAJOR|YDECR, |
73 |
YMAJOR|YDECR|XDECR, |
74 |
YMAJOR|XDECR, |
75 |
YMAJOR, |
76 |
YDECR, |
77 |
XDECR|YDECR, |
78 |
XDECR, |
79 |
0 |
80 |
}; |
81 |
|
82 |
#define pixorder() ortab[cvts.orient-1] |
83 |
|
84 |
char *progname; |
85 |
|
86 |
|
87 |
main(argc, argv) |
88 |
int argc; |
89 |
char *argv[]; |
90 |
{ |
91 |
int reverse = 0; |
92 |
int i; |
93 |
|
94 |
progname = argv[0]; |
95 |
|
96 |
for (i = 1; i < argc; i++) |
97 |
if (argv[i][0] == '-') |
98 |
switch (argv[i][1]) { |
99 |
case 'g': /* gamma correction */ |
100 |
cvts.gamcor = atof(argv[++i]); |
101 |
break; |
102 |
case 'x': /* XYZE Radiance output */ |
103 |
TGL(C_XYZE); |
104 |
break; |
105 |
case 'z': /* LZW compressed output */ |
106 |
cvts.comp = COMPRESSION_LZW; |
107 |
break; |
108 |
case 'L': /* LogLuv 32-bit output */ |
109 |
cvts.comp = COMPRESSION_SGILOG; |
110 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
111 |
break; |
112 |
case 'l': /* LogLuv 24-bit output */ |
113 |
cvts.comp = COMPRESSION_SGILOG24; |
114 |
cvts.phot = PHOTOMETRIC_LOGLUV; |
115 |
break; |
116 |
case 'b': /* greyscale output? */ |
117 |
TGL(C_GRY); |
118 |
break; |
119 |
case 'e': /* exposure adjustment */ |
120 |
if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
121 |
goto userr; |
122 |
cvts.bradj = atoi(argv[++i]); |
123 |
break; |
124 |
case 'r': /* reverse conversion? */ |
125 |
reverse = !reverse; |
126 |
break; |
127 |
case '\0': |
128 |
goto doneopts; |
129 |
default: |
130 |
goto userr; |
131 |
} |
132 |
else |
133 |
break; |
134 |
doneopts: |
135 |
if (reverse) { |
136 |
|
137 |
if (i != argc-2 && i != argc-1) |
138 |
goto userr; |
139 |
|
140 |
tiff2ra(i, argv); |
141 |
|
142 |
} else { |
143 |
|
144 |
if (i != argc-2) |
145 |
goto userr; |
146 |
|
147 |
if (CHK(C_GRY)) /* consistency corrections */ |
148 |
if (cvts.phot == PHOTOMETRIC_RGB) |
149 |
cvts.phot = PHOTOMETRIC_MINISBLACK; |
150 |
else { |
151 |
cvts.phot = PHOTOMETRIC_LOGL; |
152 |
cvts.comp = COMPRESSION_SGILOG; |
153 |
} |
154 |
|
155 |
ra2tiff(i, argv); |
156 |
} |
157 |
|
158 |
exit(0); |
159 |
userr: |
160 |
fprintf(stderr, |
161 |
"Usage: %s [-z|-L|-l][-b][-e +/-stops][-g gamma] {in.pic|-} out.tif\n", |
162 |
progname); |
163 |
fprintf(stderr, |
164 |
" Or: %s -r [-x][-e +/-stops][-g gamma] in.tif [out.pic|-]\n", |
165 |
progname); |
166 |
exit(1); |
167 |
} |
168 |
|
169 |
|
170 |
quiterr(err) /* print message and exit */ |
171 |
char *err; |
172 |
{ |
173 |
if (err != NULL) { |
174 |
fprintf(stderr, "%s: %s\n", progname, err); |
175 |
exit(1); |
176 |
} |
177 |
exit(0); |
178 |
} |
179 |
|
180 |
|
181 |
allocbufs() /* allocate scanline buffers */ |
182 |
{ |
183 |
int rsiz, tsiz; |
184 |
|
185 |
rsiz = CHK(C_RFLT) ? sizeof(COLOR) : sizeof(COLR); |
186 |
tsiz = (CHK(C_TFLT) ? sizeof(float) : |
187 |
CHK(C_TWRD) ? sizeof(uint16) : 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_FLOAT); |
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_FLOAT); |
252 |
cvts.tf = L2Color; |
253 |
break; |
254 |
case PHOTOMETRIC_YCBCR: |
255 |
if (cvts.comp == COMPRESSION_JPEG && |
256 |
cvts.pconf == PLANARCONFIG_CONTIG) { |
257 |
TIFFSetField(cvts.tif, TIFFTAG_JPEGCOLORMODE, |
258 |
JPEGCOLORMODE_RGB); |
259 |
cvts.phot = PHOTOMETRIC_RGB; |
260 |
} else |
261 |
quiterr("unsupported photometric type"); |
262 |
/* fall through */ |
263 |
case PHOTOMETRIC_RGB: |
264 |
SET(C_GAMMA); |
265 |
setcolrgam(cvts.gamcor); |
266 |
if (CHK(C_XYZE)) { |
267 |
comprgb2xyzWBmat(cvts.cmat, |
268 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
269 |
SET(C_CXFM); |
270 |
} |
271 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
272 |
hi != 3) |
273 |
quiterr("unsupported samples per pixel for RGB"); |
274 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi) || |
275 |
hi != 8 & hi != 16) |
276 |
quiterr("unsupported bits per sample for RGB"); |
277 |
if (hi == 8) |
278 |
cvts.tf = RGB2Colr; |
279 |
else { |
280 |
cvts.tf = RRGGBB2Color; |
281 |
SET(C_RFLT|C_TWRD); |
282 |
} |
283 |
break; |
284 |
case PHOTOMETRIC_MINISBLACK: |
285 |
SET(C_GRY|C_GAMMA); |
286 |
setcolrgam(cvts.gamcor); |
287 |
cvts.pconf = PLANARCONFIG_CONTIG; |
288 |
if (!TIFFGetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, &hi) || |
289 |
hi != 1) |
290 |
quiterr("unsupported samples per pixel for greyscale"); |
291 |
if (!TIFFGetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, &hi) || |
292 |
hi != 8 & hi != 16) |
293 |
quiterr("unsupported bits per sample for greyscale"); |
294 |
if (hi == 8) |
295 |
cvts.tf = Gry2Colr; |
296 |
else { |
297 |
cvts.tf = GGry2Color; |
298 |
SET(C_RFLT|C_TWRD); |
299 |
} |
300 |
break; |
301 |
default: |
302 |
quiterr("unsupported photometric type"); |
303 |
break; |
304 |
} |
305 |
|
306 |
if (!TIFFGetField(cvts.tif, TIFFTAG_IMAGEWIDTH, &cvts.xmax) || |
307 |
!TIFFGetField(cvts.tif, TIFFTAG_IMAGELENGTH, &cvts.ymax)) |
308 |
quiterr("unknown input image resolution"); |
309 |
|
310 |
if (!TIFFGetField(cvts.tif, TIFFTAG_STONITS, &cvts.stonits)) |
311 |
cvts.stonits = 1.; |
312 |
/* add to Radiance header */ |
313 |
if (cvts.pixrat < .99 || cvts.pixrat > 1.01) |
314 |
fputaspect(cvts.pixrat, cvts.rfp); |
315 |
if (CHK(C_XYZE)) { |
316 |
fputexpos(pow(2.,(double)cvts.bradj)/cvts.stonits, cvts.rfp); |
317 |
fputformat(CIEFMT, cvts.rfp); |
318 |
} else { |
319 |
if (CHK(C_PRIM)) |
320 |
fputprims(cvts.prims, cvts.rfp); |
321 |
fputexpos(WHTEFFICACY*pow(2.,(double)cvts.bradj)/cvts.stonits, |
322 |
cvts.rfp); |
323 |
fputformat(COLRFMT, cvts.rfp); |
324 |
} |
325 |
|
326 |
allocbufs(); /* allocate scanline buffers */ |
327 |
} |
328 |
|
329 |
|
330 |
tiff2ra(ac, av) /* convert TIFF image to Radiance picture */ |
331 |
int ac; |
332 |
char *av[]; |
333 |
{ |
334 |
int32 y; |
335 |
/* open TIFF input */ |
336 |
if ((cvts.tif = TIFFOpen(av[ac], "r")) == NULL) |
337 |
quiterr("cannot open TIFF input"); |
338 |
/* open Radiance output */ |
339 |
if (av[ac+1] == NULL || !strcmp(av[ac+1], "-")) |
340 |
cvts.rfp = stdout; |
341 |
else if ((cvts.rfp = fopen(av[ac+1], "w")) == NULL) |
342 |
quiterr("cannot open Radiance output picture"); |
343 |
/* start output header */ |
344 |
newheader("RADIANCE", cvts.rfp); |
345 |
printargs(ac, av, cvts.rfp); |
346 |
|
347 |
initfromtif(); /* initialize conversion */ |
348 |
|
349 |
fputc('\n', cvts.rfp); /* finish Radiance header */ |
350 |
fputresolu(pixorder(), (int)cvts.xmax, (int)cvts.ymax, cvts.rfp); |
351 |
|
352 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
353 |
(*cvts.tf)(y); |
354 |
/* clean up */ |
355 |
fclose(cvts.rfp); |
356 |
TIFFClose(cvts.tif); |
357 |
} |
358 |
|
359 |
|
360 |
int |
361 |
headline(s) /* process Radiance input header line */ |
362 |
char *s; |
363 |
{ |
364 |
char fmt[32]; |
365 |
|
366 |
if (formatval(fmt, s)) { |
367 |
if (!strcmp(fmt, COLRFMT)) |
368 |
CLR(C_XYZE); |
369 |
else if (!strcmp(fmt, CIEFMT)) |
370 |
SET(C_XYZE); |
371 |
else |
372 |
quiterr("unrecognized input picture format"); |
373 |
return(1); |
374 |
} |
375 |
if (isexpos(s)) { |
376 |
cvts.stonits /= exposval(s); |
377 |
return(1); |
378 |
} |
379 |
if (isaspect(s)) { |
380 |
cvts.pixrat *= aspectval(s); |
381 |
return(1); |
382 |
} |
383 |
if (isprims(s)) { |
384 |
primsval(cvts.prims, s); |
385 |
SET(C_PRIM); |
386 |
return(1); |
387 |
} |
388 |
return(0); |
389 |
} |
390 |
|
391 |
|
392 |
initfromrad() /* initialize input from a Radiance picture */ |
393 |
{ |
394 |
int i1, i2, po; |
395 |
/* read Radiance header */ |
396 |
CLR(C_RFLT|C_TFLT|C_XYZE|C_PRIM|C_GAMMA|C_CXFM); |
397 |
cvts.stonits = 1.; |
398 |
cvts.pixrat = 1.; |
399 |
cvts.pconf = PLANARCONFIG_CONTIG; |
400 |
getheader(cvts.rfp, headline, NULL); |
401 |
if ((po = fgetresolu(&i1, &i2, cvts.rfp)) < 0) |
402 |
quiterr("bad Radiance picture"); |
403 |
cvts.xmax = i1; cvts.ymax = i2; |
404 |
for (i1 = 0; i1 < 8; i1++) /* interpret orientation */ |
405 |
if (ortab[i1] == po) { |
406 |
cvts.orient = i1 + 1; |
407 |
break; |
408 |
} |
409 |
if (i1 >= 8) |
410 |
quiterr("internal error 1 in initfromrad"); |
411 |
if (!(po & YMAJOR)) |
412 |
cvts.pixrat = 1./cvts.pixrat; |
413 |
if (!CHK(C_XYZE)) |
414 |
cvts.stonits *= WHTEFFICACY; |
415 |
/* set up conversion */ |
416 |
TIFFSetField(cvts.tif, TIFFTAG_COMPRESSION, cvts.comp); |
417 |
TIFFSetField(cvts.tif, TIFFTAG_PHOTOMETRIC, cvts.phot); |
418 |
|
419 |
switch (cvts.phot) { |
420 |
case PHOTOMETRIC_LOGLUV: |
421 |
SET(C_RFLT|C_TFLT); |
422 |
CLR(C_GRY); |
423 |
if (!CHK(C_XYZE)) { |
424 |
comprgb2xyzWBmat(cvts.cmat, |
425 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
426 |
SET(C_CXFM); |
427 |
} |
428 |
if (cvts.comp != COMPRESSION_SGILOG && |
429 |
cvts.comp != COMPRESSION_SGILOG24) |
430 |
quiterr("internal error 2 in initfromrad"); |
431 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
432 |
SGILOGDATAFMT_FLOAT); |
433 |
cvts.tf = Color2Luv; |
434 |
break; |
435 |
case PHOTOMETRIC_LOGL: |
436 |
SET(C_GRY|C_RFLT|C_TFLT); |
437 |
if (cvts.comp != COMPRESSION_SGILOG) |
438 |
quiterr("internal error 3 in initfromrad"); |
439 |
TIFFSetField(cvts.tif, TIFFTAG_SGILOGDATAFMT, |
440 |
SGILOGDATAFMT_FLOAT); |
441 |
cvts.tf = Color2L; |
442 |
break; |
443 |
case PHOTOMETRIC_RGB: |
444 |
SET(C_GAMMA|C_GAMUT); |
445 |
CLR(C_GRY); |
446 |
setcolrgam(cvts.gamcor); |
447 |
if (CHK(C_XYZE)) { |
448 |
compxyz2rgbWBmat(cvts.cmat, |
449 |
CHK(C_PRIM) ? cvts.prims : stdprims); |
450 |
SET(C_CXFM); |
451 |
} |
452 |
if (CHK(C_PRIM)) { |
453 |
TIFFSetField(cvts.tif, TIFFTAG_PRIMARYCHROMATICITIES, |
454 |
(float *)cvts.prims); |
455 |
TIFFSetField(cvts.tif, TIFFTAG_WHITEPOINT, |
456 |
(float *)cvts.prims[WHT]); |
457 |
} |
458 |
cvts.tf = Colr2RGB; |
459 |
break; |
460 |
case PHOTOMETRIC_MINISBLACK: |
461 |
SET(C_GRY|C_GAMMA|C_GAMUT); |
462 |
setcolrgam(cvts.gamcor); |
463 |
cvts.tf = Colr2Gry; |
464 |
break; |
465 |
default: |
466 |
quiterr("internal error 4 in initfromrad"); |
467 |
break; |
468 |
} |
469 |
/* set other TIFF fields */ |
470 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGEWIDTH, cvts.xmax); |
471 |
TIFFSetField(cvts.tif, TIFFTAG_IMAGELENGTH, cvts.ymax); |
472 |
TIFFSetField(cvts.tif, TIFFTAG_SAMPLESPERPIXEL, CHK(C_GRY) ? 1 : 3); |
473 |
TIFFSetField(cvts.tif, TIFFTAG_BITSPERSAMPLE, CHK(C_TFLT) ? 32 : 8); |
474 |
TIFFSetField(cvts.tif, TIFFTAG_XRESOLUTION, 72.); |
475 |
TIFFSetField(cvts.tif, TIFFTAG_YRESOLUTION, 72./cvts.pixrat); |
476 |
TIFFSetField(cvts.tif, TIFFTAG_ORIENTATION, cvts.orient); |
477 |
TIFFSetField(cvts.tif, TIFFTAG_RESOLUTIONUNIT, 2); |
478 |
TIFFSetField(cvts.tif, TIFFTAG_PLANARCONFIG, cvts.pconf); |
479 |
TIFFSetField(cvts.tif, TIFFTAG_STONITS, |
480 |
cvts.stonits/pow(2.,(double)cvts.bradj)); |
481 |
if (cvts.comp == COMPRESSION_NONE) |
482 |
i1 = TIFFScanlineSize(cvts.tif); |
483 |
else |
484 |
i1 = 3*cvts.xmax; /* conservative guess */ |
485 |
i2 = 8192/i1; /* compute good strip size */ |
486 |
if (i2 < 1) i2 = 1; |
487 |
TIFFSetField(cvts.tif, TIFFTAG_ROWSPERSTRIP, (uint32)i2); |
488 |
|
489 |
allocbufs(); /* allocate scanline buffers */ |
490 |
} |
491 |
|
492 |
|
493 |
ra2tiff(ac, av) /* convert Radiance picture to TIFF image */ |
494 |
int ac; |
495 |
char *av[]; |
496 |
{ |
497 |
uint32 y; |
498 |
/* open Radiance file */ |
499 |
if (!strcmp(av[ac], "-")) |
500 |
cvts.rfp = stdin; |
501 |
else if ((cvts.rfp = fopen(av[ac], "r")) == NULL) |
502 |
quiterr("cannot open Radiance input picture"); |
503 |
/* open TIFF file */ |
504 |
if ((cvts.tif = TIFFOpen(av[ac+1], "w")) == NULL) |
505 |
quiterr("cannot open TIFF output"); |
506 |
|
507 |
initfromrad(); /* initialize conversion */ |
508 |
|
509 |
for (y = 0; y < cvts.ymax; y++) /* convert image */ |
510 |
(*cvts.tf)(y); |
511 |
/* clean up */ |
512 |
TIFFClose(cvts.tif); |
513 |
fclose(cvts.rfp); |
514 |
} |
515 |
|
516 |
|
517 |
int |
518 |
Luv2Color(y) /* read/convert/write Luv->COLOR scanline */ |
519 |
uint32 y; |
520 |
{ |
521 |
register int x; |
522 |
|
523 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
524 |
quiterr("internal error 1 in Luv2Color"); |
525 |
|
526 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
527 |
quiterr("error reading TIFF input"); |
528 |
|
529 |
for (x = cvts.xmax; x--; ) { |
530 |
colval(cvts.r.colors[x],CIEX) = cvts.t.fp[3*x]; |
531 |
colval(cvts.r.colors[x],CIEY) = cvts.t.fp[3*x + 1]; |
532 |
colval(cvts.r.colors[x],CIEZ) = cvts.t.fp[3*x + 2]; |
533 |
if (CHK(C_CXFM)) |
534 |
colortrans(cvts.r.colors[x], cvts.cmat, |
535 |
cvts.r.colors[x]); |
536 |
if (CHK(C_GAMUT)) |
537 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
538 |
CGAMUT_LOWER, cblack, cwhite); |
539 |
} |
540 |
if (cvts.bradj) { |
541 |
double m = pow(2.,(double)cvts.bradj); |
542 |
for (x = cvts.xmax; x--; ) |
543 |
scalecolor(cvts.r.colors[x], m); |
544 |
} |
545 |
|
546 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
547 |
quiterr("error writing Radiance picture"); |
548 |
} |
549 |
|
550 |
|
551 |
int |
552 |
RRGGBB2Color(y) /* read/convert/write RGB16->COLOR scanline */ |
553 |
uint32 y; |
554 |
{ |
555 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
556 |
register double d; |
557 |
register int x; |
558 |
|
559 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_TWRD|C_RFLT)) |
560 |
quiterr("internal error 1 in RRGGBB2Color"); |
561 |
|
562 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
563 |
quiterr("error reading TIFF input"); |
564 |
|
565 |
for (x = cvts.xmax; x--; ) { |
566 |
d = (cvts.t.wp[3*x] + 0.5)*(1./(1L<<16)); |
567 |
if (dogamma) d = pow(d, cvts.gamcor); |
568 |
colval(cvts.r.colors[x],RED) = d; |
569 |
d = (cvts.t.wp[3*x + 1] + 0.5)*(1./(1L<<16)); |
570 |
if (dogamma) d = pow(d, cvts.gamcor); |
571 |
colval(cvts.r.colors[x],GRN) = d; |
572 |
d = (cvts.t.wp[3*x + 2] + 0.5)*(1./(1L<<16)); |
573 |
if (dogamma) d = pow(d, cvts.gamcor); |
574 |
colval(cvts.r.colors[x],BLU) = d; |
575 |
if (CHK(C_CXFM)) |
576 |
colortrans(cvts.r.colors[x], cvts.cmat, |
577 |
cvts.r.colors[x]); |
578 |
if (CHK(C_GAMUT)) |
579 |
clipgamut(cvts.r.colors[x], cvts.t.fp[3*x + 1], |
580 |
CGAMUT_LOWER, cblack, cwhite); |
581 |
} |
582 |
if (cvts.bradj) { |
583 |
d = pow(2.,(double)cvts.bradj); |
584 |
for (x = cvts.xmax; x--; ) |
585 |
scalecolor(cvts.r.colors[x], d); |
586 |
} |
587 |
|
588 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
589 |
quiterr("error writing Radiance picture"); |
590 |
} |
591 |
|
592 |
|
593 |
int |
594 |
L2Color(y) /* read/convert/write L16->COLOR scanline */ |
595 |
uint32 y; |
596 |
{ |
597 |
register int x; |
598 |
|
599 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
600 |
quiterr("internal error 1 in L2Color"); |
601 |
|
602 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
603 |
quiterr("error reading TIFF input"); |
604 |
|
605 |
for (x = cvts.xmax; x--; ) |
606 |
colval(cvts.r.colors[x],RED) = |
607 |
colval(cvts.r.colors[x],GRN) = |
608 |
colval(cvts.r.colors[x],BLU) = |
609 |
cvts.t.fp[x] > 0. ? cvts.t.fp[x] : 0.; |
610 |
|
611 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
612 |
quiterr("error writing Radiance picture"); |
613 |
} |
614 |
|
615 |
|
616 |
int |
617 |
RGB2Colr(y) /* read/convert/write RGB->COLR scanline */ |
618 |
uint32 y; |
619 |
{ |
620 |
COLOR ctmp; |
621 |
register int x; |
622 |
|
623 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY)) |
624 |
quiterr("internal error 1 in RGB2Colr"); |
625 |
|
626 |
if (cvts.pconf == PLANARCONFIG_CONTIG) { |
627 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
628 |
goto readerr; |
629 |
for (x = cvts.xmax; x--; ) { |
630 |
cvts.r.colrs[x][RED] = cvts.t.bp[3*x]; |
631 |
cvts.r.colrs[x][GRN] = cvts.t.bp[3*x + 1]; |
632 |
cvts.r.colrs[x][BLU] = cvts.t.bp[3*x + 2]; |
633 |
} |
634 |
} else { |
635 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
636 |
goto readerr; |
637 |
if (TIFFReadScanline(cvts.tif, |
638 |
(tdata_t)(cvts.t.bp + cvts.xmax), y, 1) < 0) |
639 |
goto readerr; |
640 |
if (TIFFReadScanline(cvts.tif, |
641 |
(tdata_t)(cvts.t.bp + 2*cvts.xmax), y, 2) < 0) |
642 |
goto readerr; |
643 |
for (x = cvts.xmax; x--; ) { |
644 |
cvts.r.colrs[x][RED] = cvts.t.bp[x]; |
645 |
cvts.r.colrs[x][GRN] = cvts.t.bp[cvts.xmax + x]; |
646 |
cvts.r.colrs[x][BLU] = cvts.t.bp[2*cvts.xmax + x]; |
647 |
} |
648 |
} |
649 |
|
650 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
651 |
if (CHK(C_CXFM)) |
652 |
for (x = cvts.xmax; x--; ) { |
653 |
colr_color(ctmp, cvts.r.colrs[x]); |
654 |
colortrans(ctmp, cvts.cmat, ctmp); |
655 |
if (CHK(C_GAMUT)) /* !CHK(C_XYZE) */ |
656 |
clipgamut(ctmp, bright(ctmp), CGAMUT_LOWER, |
657 |
cblack, cwhite); |
658 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
659 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
660 |
} |
661 |
if (cvts.bradj) |
662 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
663 |
|
664 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
665 |
quiterr("error writing Radiance picture"); |
666 |
return; |
667 |
readerr: |
668 |
quiterr("error reading TIFF input"); |
669 |
} |
670 |
|
671 |
|
672 |
int |
673 |
Gry2Colr(y) /* read/convert/write G8->COLR scanline */ |
674 |
uint32 y; |
675 |
{ |
676 |
register int x; |
677 |
|
678 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
679 |
quiterr("internal error 1 in Gry2Colr"); |
680 |
|
681 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
682 |
quiterr("error reading TIFF input"); |
683 |
|
684 |
for (x = cvts.xmax; x--; ) |
685 |
cvts.r.colrs[x][RED] = |
686 |
cvts.r.colrs[x][GRN] = |
687 |
cvts.r.colrs[x][BLU] = cvts.t.bp[x]; |
688 |
|
689 |
gambs_colrs(cvts.r.colrs, cvts.xmax); |
690 |
if (cvts.bradj) |
691 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
692 |
|
693 |
if (fwritecolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
694 |
quiterr("error writing Radiance picture"); |
695 |
} |
696 |
|
697 |
|
698 |
int |
699 |
GGry2Color(y) /* read/convert/write G16->COLOR scanline */ |
700 |
uint32 y; |
701 |
{ |
702 |
int dogamma = cvts.gamcor < 0.99 | cvts.gamcor > 1.01; |
703 |
double m; |
704 |
register double d; |
705 |
register int x; |
706 |
|
707 |
if (CHK(C_TFLT|C_TWRD|C_GRY|C_RFLT) != (C_GRY|C_RFLT|C_TWRD)) |
708 |
quiterr("internal error 1 in GGry2Color"); |
709 |
|
710 |
if (TIFFReadScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
711 |
quiterr("error reading TIFF input"); |
712 |
|
713 |
if (cvts.bradj) |
714 |
m = pow(2., (double)cvts.bradj); |
715 |
for (x = cvts.xmax; x--; ) { |
716 |
d = (cvts.t.wp[x] + 0.5)*(1./(1L<<16)); |
717 |
if (dogamma) d = pow(d, cvts.gamcor); |
718 |
if (cvts.bradj) d *= m; |
719 |
colval(cvts.r.colors[x],RED) = |
720 |
colval(cvts.r.colors[x],GRN) = |
721 |
colval(cvts.r.colors[x],BLU) = d; |
722 |
} |
723 |
if (fwritescan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
724 |
quiterr("error writing Radiance picture"); |
725 |
} |
726 |
|
727 |
|
728 |
int |
729 |
Color2L(y) /* read/convert/write COLOR->L16 scanline */ |
730 |
uint32 y; |
731 |
{ |
732 |
double m = pow(2.,(double)cvts.bradj); |
733 |
register int x; |
734 |
|
735 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY) != (C_RFLT|C_TFLT|C_GRY)) |
736 |
quiterr("internal error 1 in Color2L"); |
737 |
|
738 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
739 |
quiterr("error reading Radiance picture"); |
740 |
|
741 |
for (x = cvts.xmax; x--; ) |
742 |
cvts.t.fp[x] = m*( CHK(C_XYZE) ? colval(cvts.r.colors[x],CIEY) |
743 |
: bright(cvts.r.colors[x]) ); |
744 |
|
745 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
746 |
quiterr("error writing TIFF output"); |
747 |
} |
748 |
|
749 |
|
750 |
int |
751 |
Color2Luv(y) /* read/convert/write COLOR->Luv scanline */ |
752 |
uint32 y; |
753 |
{ |
754 |
register int x; |
755 |
|
756 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != (C_RFLT|C_TFLT)) |
757 |
quiterr("internal error 1 in Color2Luv"); |
758 |
|
759 |
if (freadscan(cvts.r.colors, cvts.xmax, cvts.rfp) < 0) |
760 |
quiterr("error reading Radiance picture"); |
761 |
|
762 |
if (CHK(C_CXFM)) |
763 |
for (x = cvts.xmax; x--; ) |
764 |
colortrans(cvts.r.colors[x], cvts.cmat, |
765 |
cvts.r.colors[x]); |
766 |
if (cvts.bradj) { |
767 |
double m = pow(2.,(double)cvts.bradj); |
768 |
for (x = cvts.xmax; x--; ) |
769 |
scalecolor(cvts.r.colors[x], m); |
770 |
} |
771 |
|
772 |
for (x = cvts.xmax; x--; ) { |
773 |
cvts.t.fp[3*x] = colval(cvts.r.colors[x],CIEX); |
774 |
cvts.t.fp[3*x+1] = colval(cvts.r.colors[x],CIEY); |
775 |
cvts.t.fp[3*x+2] = colval(cvts.r.colors[x],CIEZ); |
776 |
} |
777 |
|
778 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
779 |
quiterr("error writing TIFF output"); |
780 |
} |
781 |
|
782 |
|
783 |
int |
784 |
Colr2Gry(y) /* read/convert/write COLR->RGB scanline */ |
785 |
uint32 y; |
786 |
{ |
787 |
register int x; |
788 |
|
789 |
if (CHK(C_RFLT|C_TWRD|C_TFLT|C_GRY) != C_GRY) |
790 |
quiterr("internal error 1 in Colr2Gry"); |
791 |
|
792 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
793 |
quiterr("error reading Radiance picture"); |
794 |
|
795 |
if (cvts.bradj) |
796 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
797 |
for (x = cvts.xmax; x--; ) |
798 |
colval(cvts.r.colrs[x],CIEY) = normbright(cvts.r.colrs[x]); |
799 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
800 |
|
801 |
for (x = cvts.xmax; x--; ) |
802 |
cvts.t.bp[x] = colval(cvts.r.colrs[x],CIEY); |
803 |
|
804 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
805 |
quiterr("error writing TIFF output"); |
806 |
} |
807 |
|
808 |
|
809 |
int |
810 |
Colr2RGB(y) /* read/convert/write COLR->RGB scanline */ |
811 |
uint32 y; |
812 |
{ |
813 |
COLOR ctmp; |
814 |
register int x; |
815 |
|
816 |
if (CHK(C_RFLT|C_TFLT|C_TWRD|C_GRY)) |
817 |
quiterr("internal error 1 in Colr2RGB"); |
818 |
|
819 |
if (freadcolrs(cvts.r.colrs, cvts.xmax, cvts.rfp) < 0) |
820 |
quiterr("error reading Radiance picture"); |
821 |
|
822 |
if (cvts.bradj) |
823 |
shiftcolrs(cvts.r.colrs, cvts.xmax, cvts.bradj); |
824 |
if (CHK(C_CXFM)) |
825 |
for (x = cvts.xmax; x--; ) { |
826 |
colr_color(ctmp, cvts.r.colrs[x]); |
827 |
colortrans(ctmp, cvts.cmat, ctmp); |
828 |
if (CHK(C_GAMUT)) |
829 |
clipgamut(ctmp, bright(ctmp), CGAMUT, |
830 |
cblack, cwhite); |
831 |
setcolr(cvts.r.colrs[x], colval(ctmp,RED), |
832 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
833 |
} |
834 |
colrs_gambs(cvts.r.colrs, cvts.xmax); |
835 |
|
836 |
for (x = cvts.xmax; x--; ) { |
837 |
cvts.t.bp[3*x] = cvts.r.colrs[x][RED]; |
838 |
cvts.t.bp[3*x+1] = cvts.r.colrs[x][GRN]; |
839 |
cvts.t.bp[3*x+2] = cvts.r.colrs[x][BLU]; |
840 |
} |
841 |
|
842 |
if (TIFFWriteScanline(cvts.tif, cvts.t.p, y, 0) < 0) |
843 |
quiterr("error writing TIFF output"); |
844 |
} |