18 |
|
|
19 |
|
struct tmStruct *tmTop = NULL; /* current tone mapping stack */ |
20 |
|
|
21 |
+ |
/* our list of conversion packages */ |
22 |
+ |
struct tmPackage *tmPkg[TM_MAXPKG]; |
23 |
+ |
int tmNumPkgs = 0; /* number of registered packages */ |
24 |
|
|
25 |
+ |
|
26 |
|
int |
27 |
|
tmErrorReturn(func, err) /* error return (with message) */ |
28 |
|
char *func; |
29 |
|
int err; |
30 |
|
{ |
31 |
< |
if (tmTop != NULL && tmTop->flags & TM_F_NOERRS) |
31 |
> |
if (tmTop != NULL && tmTop->flags & TM_F_NOSTDERR) |
32 |
|
return(err); |
33 |
|
fputs(func, stderr); |
34 |
|
fputs(": ", stderr); |
66 |
|
tmnew->clf[GRN] = cmat[1][1]; |
67 |
|
tmnew->clf[BLU] = cmat[1][2]; |
68 |
|
} |
65 |
– |
tmnew->clfb[RED] = 256.*tmnew->clf[RED] + .5; |
66 |
– |
tmnew->clfb[GRN] = 256.*tmnew->clf[GRN] + .5; |
67 |
– |
tmnew->clfb[BLU] = 256.*tmnew->clf[BLU] + .5; |
68 |
– |
tmnew->clfb[EXP] = COLXS; |
69 |
|
/* set gamma value */ |
70 |
|
if (gamval < MINGAM) |
71 |
|
tmnew->mongam = DEFGAM; |
72 |
|
else |
73 |
|
tmnew->mongam = gamval; |
74 |
< |
for (i = TM_GAMTSZ; i--; ) |
75 |
< |
tmnew->gamb[i] = 256.*pow((i+.5)/TM_GAMTSZ, 1./tmnew->mongam); |
74 |
> |
/* set color divisors */ |
75 |
> |
for (i = 0; i < 3; i++) |
76 |
> |
tmnew->cdiv[i] = 256.*pow(tmnew->clf[i], 1./tmnew->mongam); |
77 |
> |
|
78 |
|
/* set input transform */ |
79 |
|
tmnew->inppri = tmnew->monpri; |
80 |
|
tmnew->cmat[0][0] = tmnew->cmat[1][1] = tmnew->cmat[2][2] = |
81 |
|
tmnew->inpsf = WHTEFFICACY; |
80 |
– |
tmnew->inpsfb = TM_BRTSCALE*log(tmnew->inpsf) + .5; |
82 |
|
tmnew->cmat[0][1] = tmnew->cmat[0][2] = tmnew->cmat[1][0] = |
83 |
|
tmnew->cmat[1][2] = tmnew->cmat[2][0] = tmnew->cmat[2][1] = 0.; |
83 |
– |
tmnew->flags &= ~TM_F_NEEDMAT; |
84 |
|
tmnew->brmin = tmnew->brmax = 0; |
85 |
|
tmnew->histo = NULL; |
86 |
|
tmnew->lumap = NULL; |
87 |
< |
tmnew->tmprev = NULL; |
88 |
< |
|
89 |
< |
tmnew->flags |= TM_F_INITED; |
90 |
< |
/* make it current */ |
87 |
> |
/* zero private data */ |
88 |
> |
for (i = TM_MAXPKG; i--; ) |
89 |
> |
tmnew->pd[i] = NULL; |
90 |
> |
/* make tmnew current */ |
91 |
|
tmnew->tmprev = tmTop; |
92 |
|
return(tmTop = tmnew); |
93 |
|
} |
110 |
|
returnOK; |
111 |
|
tmTop->inppri = pri; /* let's set it */ |
112 |
|
tmTop->inpsf = sf; |
113 |
– |
tmTop->inpsfb = TM_BRTSCALE*log(sf) + (sf>=1. ? .5 : -.5); |
113 |
|
|
114 |
|
if (tmTop->flags & TM_F_BW) { /* color doesn't matter */ |
115 |
|
tmTop->monpri = tmTop->inppri; /* eliminate xform */ |
116 |
|
if (tmTop->inppri == TM_XYZPRIM) { |
117 |
|
tmTop->clf[CIEX] = tmTop->clf[CIEZ] = 0.; |
118 |
|
tmTop->clf[CIEY] = 1.; |
120 |
– |
tmTop->clfb[CIEX] = tmTop->clfb[CIEZ] = 0; |
121 |
– |
tmTop->clfb[CIEY] = 255; |
119 |
|
} else { |
120 |
|
comprgb2xyzmat(tmTop->cmat, tmTop->monpri); |
121 |
|
tmTop->clf[RED] = tmTop->cmat[1][0]; |
139 |
|
for (i = 0; i < 3; i++) |
140 |
|
for (j = 0; j < 3; j++) |
141 |
|
tmTop->cmat[i][j] *= tmTop->inpsf; |
142 |
< |
if (tmTop->inppri != tmTop->monpri) |
143 |
< |
tmTop->flags |= TM_F_NEEDMAT; |
144 |
< |
else |
145 |
< |
tmTop->flags &= ~TM_F_NEEDMAT; |
142 |
> |
/* set color divisors */ |
143 |
> |
for (i = 0; i < 3; i++) |
144 |
> |
if (tmTop->clf[i] > .001) |
145 |
> |
tmTop->cdiv[i] = |
146 |
> |
256.*pow(tmTop->clf[i], 1./tmTop->mongam); |
147 |
> |
else |
148 |
> |
tmTop->cdiv[i] = 1; |
149 |
> |
/* notify packages */ |
150 |
> |
for (i = tmNumPkgs; i--; ) |
151 |
> |
if (tmTop->pd[i] != NULL && tmPkg[i]->NewSpace != NULL) |
152 |
> |
(*tmPkg[i]->NewSpace)(tmTop); |
153 |
|
returnOK; |
154 |
|
} |
155 |
|
|
159 |
|
{ |
160 |
|
if (tmTop == NULL || tmTop->histo == NULL) |
161 |
|
return; |
162 |
< |
free((char *)tmTop->histo); |
162 |
> |
free((MEM_PTR)tmTop->histo); |
163 |
|
tmTop->histo = NULL; |
164 |
|
} |
165 |
|
|
172 |
|
int len; |
173 |
|
{ |
174 |
|
static char funcName[] = "tmCvColors"; |
175 |
+ |
static COLOR csmall = {1e-6, 1e-6, 1e-6}; |
176 |
|
COLOR cmon; |
177 |
|
double lum, slum; |
178 |
|
register double d; |
183 |
|
if (ls == NULL | scan == NULL | len <= 0) |
184 |
|
returnErr(TM_E_ILLEGAL); |
185 |
|
for (i = len; i--; ) { |
186 |
< |
if (tmTop->flags & TM_F_NEEDMAT) /* get monitor RGB */ |
186 |
> |
if (tmNeedMatrix(tmTop)) /* get monitor RGB */ |
187 |
|
colortrans(cmon, tmTop->cmat, scan[i]); |
188 |
|
else { |
189 |
|
cmon[RED] = tmTop->inpsf*scan[i][RED]; |
195 |
|
tmTop->clf[GRN]*cmon[GRN] + |
196 |
|
tmTop->clf[BLU]*cmon[BLU] ; |
197 |
|
/* check range */ |
198 |
< |
if (clipgamut(cmon, lum, CGAMUT_LOWER, cblack, cwhite)) |
198 |
> |
if (clipgamut(cmon, lum, CGAMUT_LOWER, csmall, cwhite)) |
199 |
|
lum = tmTop->clf[RED]*cmon[RED] + |
200 |
|
tmTop->clf[GRN]*cmon[GRN] + |
201 |
|
tmTop->clf[BLU]*cmon[BLU] ; |
228 |
|
cmon[RED] = cmon[GRN] = cmon[BLU] = lum; |
229 |
|
} |
230 |
|
d = tmTop->clf[RED]*cmon[RED]/lum; |
231 |
< |
/* cs[3*i ] = d>.999 ? 255 : 256.*pow(d, 1./tmTop->mongam); */ |
232 |
< |
cs[3*i ] = d>.999 ? 255 : tmTop->gamb[(int)(d*TM_GAMTSZ)]; |
231 |
> |
cs[3*i ] = d>=.999 ? 255 : |
232 |
> |
(int)(256.*pow(d, 1./tmTop->mongam)); |
233 |
|
d = tmTop->clf[GRN]*cmon[GRN]/lum; |
234 |
< |
/* cs[3*i+1] = d>.999 ? 255 : 256.*pow(d, 1./tmTop->mongam); */ |
235 |
< |
cs[3*i+1] = d>.999 ? 255 : tmTop->gamb[(int)(d*TM_GAMTSZ)]; |
234 |
> |
cs[3*i+1] = d>=.999 ? 255 : |
235 |
> |
(int)(256.*pow(d, 1./tmTop->mongam)); |
236 |
|
d = tmTop->clf[BLU]*cmon[BLU]/lum; |
237 |
< |
/* cs[3*i+2] = d>.999 ? 255 : 256.*pow(d, 1./tmTop->mongam); */ |
238 |
< |
cs[3*i+2] = d>.999 ? 255 : tmTop->gamb[(int)(d*TM_GAMTSZ)]; |
237 |
> |
cs[3*i+2] = d>=.999 ? 255 : |
238 |
> |
(int)(256.*pow(d, 1./tmTop->mongam)); |
239 |
|
} |
240 |
|
returnOK; |
241 |
|
} |
282 |
|
if (newhist == NULL) |
283 |
|
returnErr(TM_E_NOMEM); |
284 |
|
if (oldlen) { /* copy and free old */ |
285 |
< |
for (i = oldlen, j = i+oldorig-horig; i--; ) |
286 |
< |
newhist[--j] = tmTop->histo[i]; |
287 |
< |
free((char *)tmTop->histo); |
285 |
> |
for (i = oldlen, j = i+oldorig-horig; i; ) |
286 |
> |
newhist[--j] = tmTop->histo[--i]; |
287 |
> |
free((MEM_PTR)tmTop->histo); |
288 |
|
} |
289 |
|
tmTop->histo = newhist; |
290 |
|
if (tmTop->lumap != NULL) { /* invalid tone map */ |
291 |
< |
free((char *)tmTop->lumap); |
291 |
> |
free((MEM_PTR)tmTop->lumap); |
292 |
|
tmTop->lumap = NULL; |
293 |
|
} |
294 |
|
} |
351 |
|
i = (tmTop->brmin-MINBRT)/HISTEP; |
352 |
|
brt0 = MINBRT + HISTEP/2 + i*HISTEP; |
353 |
|
histlen = (tmTop->brmax-MINBRT)/HISTEP + 1 - i; |
349 |
– |
/* allocate temporary tables */ |
350 |
– |
histo = (int *)malloc(histlen*sizeof(int)); |
351 |
– |
cumf = (float *)malloc((histlen+1)*sizeof(float)); |
352 |
– |
if (histo == NULL | cumf == NULL) |
353 |
– |
returnErr(TM_E_NOMEM); |
354 |
|
/* histogram total and mean */ |
355 |
|
histot = 0; sum = 0; |
356 |
|
j = brt0 + histlen*HISTEP; |
357 |
|
for (i = histlen; i--; ) { |
358 |
< |
histot += (histo[i] = tmTop->histo[i]); |
359 |
< |
sum += (j -= HISTEP) * histo[i]; |
358 |
> |
histot += tmTop->histo[i]; |
359 |
> |
sum += (j -= HISTEP) * tmTop->histo[i]; |
360 |
|
} |
361 |
|
threshold = histot*.025 + .5; |
362 |
|
if (threshold < 4) |
363 |
|
returnErr(TM_E_TMFAIL); |
364 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
365 |
< |
do { /* iterate to solution */ |
366 |
< |
sum = 0; /* compute cumulative probability */ |
367 |
< |
for (i = 0; i < histlen; i++) { |
368 |
< |
cumf[i] = (double)sum/histot; |
369 |
< |
sum += histo[i]; |
370 |
< |
} |
371 |
< |
cumf[i] = 1.; |
372 |
< |
Tr = histot * (double)(tmTop->brmax - tmTop->brmin) / |
365 |
> |
if (!(tmTop->flags & TM_F_LINEAR)) { /* clamp histogram */ |
366 |
> |
histo = (int *)malloc(histlen*sizeof(int)); |
367 |
> |
cumf = (float *)malloc((histlen+1)*sizeof(float)); |
368 |
> |
if (histo == NULL | cumf == NULL) |
369 |
> |
returnErr(TM_E_NOMEM); |
370 |
> |
for (i = histlen; i--; ) /* make malleable copy */ |
371 |
> |
histo[i] = tmTop->histo[i]; |
372 |
> |
do { /* iterate to solution */ |
373 |
> |
sum = 0; /* cumulative probability */ |
374 |
> |
for (i = 0; i < histlen; i++) { |
375 |
> |
cumf[i] = (double)sum/histot; |
376 |
> |
sum += histo[i]; |
377 |
> |
} |
378 |
> |
cumf[i] = 1.; |
379 |
> |
Tr = histot * (double)(tmTop->brmax - tmTop->brmin) / |
380 |
|
((double)histlen*TM_BRTSCALE) / logLddyn; |
381 |
< |
ceiling = Tr + 1.; |
382 |
< |
trimmings = 0; /* clip to envelope */ |
383 |
< |
for (i = histlen; i--; ) { |
384 |
< |
if (tmTop->flags & TM_F_HCONTR) { |
385 |
< |
Lw = tmLuminance(brt0 + i*HISTEP); |
386 |
< |
Ld = Ldmin * exp( logLddyn * |
381 |
> |
ceiling = Tr + 1.; |
382 |
> |
trimmings = 0; /* clip to envelope */ |
383 |
> |
for (i = histlen; i--; ) { |
384 |
> |
if (tmTop->flags & TM_F_HCONTR) { |
385 |
> |
Lw = tmLuminance(brt0 + i*HISTEP); |
386 |
> |
Ld = Ldmin * exp( logLddyn * |
387 |
|
.5*(cumf[i]+cumf[i+1]) ); |
388 |
< |
ceiling = Tr * (htcontrs(Ld) * Lw) / |
388 |
> |
ceiling = Tr * (htcontrs(Ld) * Lw) / |
389 |
|
(htcontrs(Lw) * Ld) + 1.; |
390 |
+ |
} |
391 |
+ |
if (histo[i] > ceiling) { |
392 |
+ |
trimmings += histo[i] - ceiling; |
393 |
+ |
histo[i] = ceiling; |
394 |
+ |
} |
395 |
|
} |
396 |
< |
if (histo[i] > ceiling) { |
397 |
< |
trimmings += histo[i] - ceiling; |
398 |
< |
histo[i] = ceiling; |
399 |
< |
} |
400 |
< |
} |
389 |
< |
} while ((histot -= trimmings) > threshold && trimmings > threshold); |
390 |
< |
|
391 |
< |
if (tmTop->lumap == NULL) { /* allocate luminance map */ |
396 |
> |
} while ((histot -= trimmings) > threshold && |
397 |
> |
trimmings > threshold); |
398 |
> |
} |
399 |
> |
/* allocate luminance map */ |
400 |
> |
if (tmTop->lumap == NULL) { |
401 |
|
tmTop->lumap = (unsigned short *)malloc( |
402 |
|
(tmTop->brmax-tmTop->brmin+1)*sizeof(unsigned short) ); |
403 |
|
if (tmTop->lumap == NULL) |
424 |
|
tmTop->lumap[i] = 256.*pow(d, 1./gamval); |
425 |
|
} |
426 |
|
} |
427 |
< |
free((char *)histo); |
428 |
< |
free((char *)cumf); |
427 |
> |
if (!(tmTop->flags & TM_F_LINEAR)) { |
428 |
> |
free((MEM_PTR)histo); |
429 |
> |
free((MEM_PTR)cumf); |
430 |
> |
} |
431 |
|
returnOK; |
432 |
|
} |
433 |
|
|
440 |
|
int len; |
441 |
|
{ |
442 |
|
static char funcName[] = "tmMapPixels"; |
443 |
< |
int rdiv, gdiv, bdiv; |
433 |
< |
register int li, pv; |
443 |
> |
register int4 li, pv; |
444 |
|
|
445 |
|
if (tmTop == NULL || tmTop->lumap == NULL) |
446 |
|
returnErr(TM_E_TMINVAL); |
447 |
|
if (ps == NULL | ls == NULL | len <= 0) |
448 |
|
returnErr(TM_E_ILLEGAL); |
439 |
– |
rdiv = tmTop->gamb[((int4)TM_GAMTSZ*tmTop->clfb[RED])>>8]; |
440 |
– |
gdiv = tmTop->gamb[((int4)TM_GAMTSZ*tmTop->clfb[GRN])>>8]; |
441 |
– |
bdiv = tmTop->gamb[((int4)TM_GAMTSZ*tmTop->clfb[BLU])>>8]; |
449 |
|
while (len--) { |
450 |
|
if ((li = *ls++) < tmTop->brmin) |
451 |
|
li = tmTop->brmin; |
455 |
|
if (cs == TM_NOCHROM) |
456 |
|
*ps++ = li>255 ? 255 : li; |
457 |
|
else { |
458 |
< |
pv = *cs++ * li / rdiv; |
458 |
> |
pv = *cs++ * li / tmTop->cdiv[RED]; |
459 |
|
*ps++ = pv>255 ? 255 : pv; |
460 |
< |
pv = *cs++ * li / gdiv; |
460 |
> |
pv = *cs++ * li / tmTop->cdiv[GRN]; |
461 |
|
*ps++ = pv>255 ? 255 : pv; |
462 |
< |
pv = *cs++ * li / bdiv; |
462 |
> |
pv = *cs++ * li / tmTop->cdiv[BLU]; |
463 |
|
*ps++ = pv>255 ? 255 : pv; |
464 |
|
} |
465 |
|
} |
501 |
|
} |
502 |
|
|
503 |
|
|
504 |
+ |
struct tmStruct * |
505 |
+ |
tmDup() /* duplicate top tone mapping */ |
506 |
+ |
{ |
507 |
+ |
int len; |
508 |
+ |
register int i; |
509 |
+ |
register struct tmStruct *tmnew; |
510 |
+ |
|
511 |
+ |
if (tmTop == NULL) /* anything to duplicate? */ |
512 |
+ |
return(NULL); |
513 |
+ |
tmnew = (struct tmStruct *)malloc(sizeof(struct tmStruct)); |
514 |
+ |
if (tmnew == NULL) |
515 |
+ |
return(NULL); |
516 |
+ |
*tmnew = *tmTop; /* copy everything */ |
517 |
+ |
if (tmnew->histo != NULL) { /* duplicate histogram */ |
518 |
+ |
len = (tmnew->brmax-MINBRT)/HISTEP + 1 - |
519 |
+ |
(tmnew->brmin-MINBRT)/HISTEP; |
520 |
+ |
tmnew->histo = (int *)malloc(len*sizeof(int)); |
521 |
+ |
if (tmnew->histo != NULL) |
522 |
+ |
for (i = len; i--; ) |
523 |
+ |
tmnew->histo[i] = tmTop->histo[i]; |
524 |
+ |
} |
525 |
+ |
if (tmnew->lumap != NULL) { /* duplicate luminance mapping */ |
526 |
+ |
len = tmnew->brmax-tmnew->brmin+1; |
527 |
+ |
tmnew->lumap = (unsigned short *)malloc( |
528 |
+ |
len*sizeof(unsigned short) ); |
529 |
+ |
if (tmnew->lumap != NULL) |
530 |
+ |
for (i = len; i--; ) |
531 |
+ |
tmnew->lumap[i] = tmTop->lumap[i]; |
532 |
+ |
} |
533 |
+ |
/* clear package data */ |
534 |
+ |
for (i = tmNumPkgs; i--; ) |
535 |
+ |
tmnew->pd[i] = NULL; |
536 |
+ |
tmnew->tmprev = tmTop; /* make copy current */ |
537 |
+ |
return(tmTop = tmnew); |
538 |
+ |
} |
539 |
+ |
|
540 |
+ |
|
541 |
|
int |
542 |
|
tmPush(tms) /* push tone mapping on top of stack */ |
543 |
|
register struct tmStruct *tms; |
544 |
|
{ |
545 |
|
static char funcName[] = "tmPush"; |
546 |
|
/* check validity */ |
547 |
< |
if (tms == NULL || !(tms->flags & TM_F_INITED)) |
547 |
> |
if (tms == NULL) |
548 |
|
returnErr(TM_E_ILLEGAL); |
549 |
|
if (tms == tmTop) /* check necessity */ |
550 |
|
returnOK; |
561 |
|
tmDone(tms) /* done with tone mapping -- destroy it */ |
562 |
|
register struct tmStruct *tms; |
563 |
|
{ |
564 |
+ |
register int i; |
565 |
|
/* NULL arg. is equiv. to tmTop */ |
566 |
|
if (tms == NULL && (tms = tmTop) == NULL) |
567 |
|
return; |
569 |
|
(void)tmPull(tms); |
570 |
|
/* free tables */ |
571 |
|
if (tms->histo != NULL) |
572 |
< |
free((char *)tms->histo); |
572 |
> |
free((MEM_PTR)tms->histo); |
573 |
|
if (tms->lumap != NULL) |
574 |
< |
free((char *)tms->lumap); |
575 |
< |
tms->flags = 0; |
576 |
< |
free((char *)tms); /* free basic structure */ |
574 |
> |
free((MEM_PTR)tms->lumap); |
575 |
> |
/* free private data */ |
576 |
> |
for (i = tmNumPkgs; i--; ) |
577 |
> |
if (tms->pd[i] != NULL) |
578 |
> |
(*tmPkg[i]->Free)(tms->pd[i]); |
579 |
> |
free((MEM_PTR)tms); /* free basic structure */ |
580 |
|
} |