12 |
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#include "copyright.h" |
13 |
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|
14 |
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#include <stdio.h> |
15 |
+ |
#include <stdlib.h> |
16 |
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#include <math.h> |
17 |
+ |
#include <string.h> |
18 |
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#include "tmprivat.h" |
19 |
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#include "tmerrmsg.h" |
20 |
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|
67 |
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tmnew->mongam = gamval; |
68 |
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/* set color divisors */ |
69 |
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for (i = 0; i < 3; i++) |
70 |
< |
tmnew->cdiv[i] = 256.*pow(tmnew->clf[i], 1./tmnew->mongam); |
70 |
> |
tmnew->cdiv[i] = TM_BRES*pow(tmnew->clf[i], 1./tmnew->mongam); |
71 |
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|
72 |
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/* set input transform */ |
73 |
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tmnew->inppri = tmnew->monpri; |
135 |
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if (tms->inppri != tms->monpri && |
136 |
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PRIMEQ(tms->inppri, tms->monpri)) |
137 |
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tms->inppri = tms->monpri; /* no xform */ |
138 |
< |
comprgb2rgbWBmat(tms->cmat, tms->inppri, tms->monpri); |
138 |
> |
if (!comprgb2rgbWBmat(tms->cmat, tms->inppri, tms->monpri)) |
139 |
> |
returnErr(TM_E_ILLEGAL); |
140 |
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} |
141 |
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for (i = 0; i < 3; i++) |
142 |
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for (j = 0; j < 3; j++) |
143 |
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tms->cmat[i][j] *= tms->inpsf; |
144 |
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/* set color divisors */ |
145 |
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for (i = 0; i < 3; i++) |
146 |
< |
if (tms->clf[i] > .001) |
147 |
< |
tms->cdiv[i] = |
145 |
< |
256.*pow(tms->clf[i], 1./tms->mongam); |
146 |
< |
else |
147 |
< |
tms->cdiv[i] = 1; |
146 |
> |
tms->cdiv[i] = TM_BRES*pow(tms->clf[i] < .001 ? .001 : |
147 |
> |
tms->clf[i], 1./tms->mongam); |
148 |
|
/* notify packages */ |
149 |
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for (i = tmNumPkgs; i--; ) |
150 |
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if (tms->pd[i] != NULL && tmPkg[i]->NewSpace != NULL) |
179 |
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#endif |
180 |
|
return(TM_NOBRT); |
181 |
|
d = TM_BRTSCALE*log(lum); |
182 |
< |
if (d > 0.) |
183 |
< |
return((TMbright)(d+.5)); |
184 |
< |
return((TMbright)(d-.5)); |
182 |
> |
return((TMbright)(d + .5 - (d < 0.))); |
183 |
|
} |
184 |
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|
185 |
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|
253 |
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tmCvColors( /* convert float colors */ |
254 |
|
TMstruct *tms, |
255 |
|
TMbright *ls, |
256 |
< |
BYTE *cs, |
256 |
> |
uby8 *cs, |
257 |
|
COLOR *scan, |
258 |
|
int len |
259 |
|
) |
260 |
|
{ |
261 |
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static const char funcName[] = "tmCvColors"; |
262 |
< |
static BYTE gamtab[1024]; |
262 |
> |
static uby8 gamtab[1024]; |
263 |
|
static double curgam = .0; |
264 |
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COLOR cmon; |
265 |
|
float lum, slum, d; |
361 |
|
tms->hbrmin = tms->hbrmax = ls[i]; |
362 |
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oldlen = 0; |
363 |
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} else { |
364 |
< |
oldorig = (tms->hbrmin-MINBRT)/HISTEP; |
365 |
< |
oldlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - oldorig; |
364 |
> |
oldorig = HISTI(tms->hbrmin); |
365 |
> |
oldlen = HISTI(tms->hbrmax) + 1 - oldorig; |
366 |
|
} |
367 |
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for (i = len; i--; ) { |
368 |
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if ((j = ls[i]) < MINBRT) |
372 |
|
else if (j > tms->hbrmax) |
373 |
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tms->hbrmax = j; |
374 |
|
} |
375 |
< |
horig = (tms->hbrmin-MINBRT)/HISTEP; |
376 |
< |
hlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - horig; |
375 |
> |
horig = HISTI(tms->hbrmin); |
376 |
> |
hlen = HISTI(tms->hbrmax) + 1 - horig; |
377 |
|
if (hlen > oldlen) { /* (re)allocate histogram */ |
378 |
< |
int *newhist = (int *)calloc(hlen, sizeof(int)); |
378 |
> |
HIST_TYP *newhist = (HIST_TYP *)calloc(hlen, sizeof(HIST_TYP)); |
379 |
|
if (newhist == NULL) |
380 |
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returnErr(TM_E_NOMEM); |
381 |
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if (oldlen) { /* copy and free old */ |
382 |
< |
for (i = oldlen, j = i+oldorig-horig; i; ) |
383 |
< |
newhist[--j] = tms->histo[--i]; |
382 |
> |
memcpy((MEM_PTR)(newhist+(oldorig-horig)), |
383 |
> |
(MEM_PTR)tms->histo, oldlen*sizeof(HIST_TYP)); |
384 |
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free((MEM_PTR)tms->histo); |
385 |
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} |
386 |
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tms->histo = newhist; |
389 |
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returnOK; |
390 |
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for (i = len; i--; ) /* add in new counts */ |
391 |
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if (ls[i] >= MINBRT) |
392 |
< |
tms->histo[ (ls[i]-MINBRT)/HISTEP - horig ] += wt; |
392 |
> |
tms->histo[ HISTI(ls[i]) - horig ] += wt; |
393 |
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returnOK; |
394 |
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} |
395 |
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|
417 |
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} |
418 |
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|
419 |
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|
422 |
– |
static int |
423 |
– |
tmNewMap( /* allocate new tone-mapping array */ |
424 |
– |
TMstruct *tms |
425 |
– |
) |
426 |
– |
{ |
427 |
– |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
428 |
– |
(tms->hbrmax - tms->hbrmin)) { |
429 |
– |
free((MEM_PTR)tms->lumap); |
430 |
– |
tms->lumap = NULL; |
431 |
– |
} |
432 |
– |
tms->mbrmin = tms->hbrmin; |
433 |
– |
tms->mbrmax = tms->hbrmax; |
434 |
– |
if (tms->mbrmin > tms->mbrmax) |
435 |
– |
return 0; |
436 |
– |
if (tms->lumap == NULL) |
437 |
– |
tms->lumap = (unsigned short *)malloc(sizeof(unsigned short)* |
438 |
– |
(tms->mbrmax-tms->mbrmin+1)); |
439 |
– |
return(tms->lumap != NULL); |
440 |
– |
} |
441 |
– |
|
442 |
– |
|
420 |
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int |
421 |
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tmFixedMapping( /* compute fixed, linear tone-mapping */ |
422 |
|
TMstruct *tms, |
436 |
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gamval = tms->mongam; |
437 |
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d = log(expmult/tms->inpsf); |
438 |
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for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
439 |
< |
double val = 256. * exp( |
439 |
> |
double val = TM_BRES * exp( |
440 |
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( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
441 |
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/ gamval); |
442 |
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tms->lumap[i] = val >= (double)0xffff ? 0xffff : (int)val; |
454 |
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) |
455 |
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{ |
456 |
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static const char funcName[] = "tmComputeMapping"; |
457 |
< |
int *histo; |
457 |
> |
HIST_TYP *histo; |
458 |
|
float *cumf; |
459 |
< |
int brt0, histlen, threshold, ceiling, trimmings; |
459 |
> |
int brt0, histlen; |
460 |
> |
HIST_TYP threshold, ceiling, trimmings, histot; |
461 |
|
double logLddyn, Ldmin, Ldavg, Lwavg, Tr, Lw, Ld; |
484 |
– |
int32 histot; |
462 |
|
double sum; |
463 |
|
double d; |
464 |
|
int i, j; |
473 |
|
Ldmin = Ldmax/Lddyn; |
474 |
|
logLddyn = log(Lddyn); |
475 |
|
Ldavg = sqrt(Ldmax*Ldmin); |
476 |
< |
i = (tms->hbrmin-MINBRT)/HISTEP; |
477 |
< |
brt0 = MINBRT + HISTEP/2 + i*HISTEP; |
478 |
< |
histlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - i; |
476 |
> |
i = HISTI(tms->hbrmin); |
477 |
> |
brt0 = HISTV(i); |
478 |
> |
histlen = HISTI(tms->hbrmax) + 1 - i; |
479 |
|
/* histogram total and mean */ |
480 |
|
histot = 0; sum = 0; |
481 |
|
j = brt0 + histlen*HISTEP; |
482 |
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for (i = histlen; i--; ) { |
483 |
|
histot += tms->histo[i]; |
484 |
< |
sum += (j -= HISTEP) * tms->histo[i]; |
484 |
> |
sum += (double)(j -= HISTEP) * tms->histo[i]; |
485 |
|
} |
486 |
|
threshold = histot*0.005 + .5; |
487 |
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if (!histot) |
488 |
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returnErr(TM_E_TMFAIL); |
489 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
490 |
|
/* use linear tone mapping? */ |
491 |
< |
if (tms->flags & TM_F_LINEAR || threshold < 4) |
491 |
> |
if (tms->flags & TM_F_LINEAR || threshold < 4 || |
492 |
> |
tms->hbrmax - tms->hbrmin < TM_BRTSCALE*logLddyn) |
493 |
|
goto linearmap; |
516 |
– |
/* allocate space for mapping */ |
517 |
– |
if (!tmNewMap(tms)) |
518 |
– |
returnErr(TM_E_NOMEM); |
494 |
|
/* clamp histogram */ |
495 |
< |
histo = (int *)malloc(histlen*sizeof(int)); |
495 |
> |
histo = (HIST_TYP *)malloc(histlen*sizeof(HIST_TYP)); |
496 |
|
cumf = (float *)malloc((histlen+2)*sizeof(float)); |
497 |
|
if ((histo == NULL) | (cumf == NULL)) |
498 |
|
returnErr(TM_E_NOMEM); |
530 |
|
goto linearmap; |
531 |
|
} |
532 |
|
} while (trimmings > threshold); |
533 |
+ |
/* allocate space for mapping */ |
534 |
+ |
if (!tmNewMap(tms)) |
535 |
+ |
returnErr(TM_E_NOMEM); |
536 |
|
/* assign tone-mapping */ |
537 |
|
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
538 |
|
j = d = (double)i/(tms->mbrmax-tms->mbrmin)*histlen; |
539 |
|
d -= (double)j; |
540 |
|
Ld = Ldmin*exp(logLddyn*((1.-d)*cumf[j]+d*cumf[j+1])); |
541 |
|
d = (Ld - Ldmin)/(Ldmax - Ldmin); |
542 |
< |
tms->lumap[i] = 256.*pow(d, 1./gamval); |
542 |
> |
tms->lumap[i] = TM_BRES*pow(d, 1./gamval); |
543 |
|
} |
544 |
|
free((MEM_PTR)histo); /* clean up and return */ |
545 |
|
free((MEM_PTR)cumf); |
556 |
|
int |
557 |
|
tmMapPixels( /* apply tone-mapping to pixel(s) */ |
558 |
|
TMstruct *tms, |
559 |
< |
BYTE *ps, |
559 |
> |
uby8 *ps, |
560 |
|
TMbright *ls, |
561 |
< |
BYTE *cs, |
561 |
> |
uby8 *cs, |
562 |
|
int len |
563 |
|
) |
564 |
|
{ |
592 |
|
} |
593 |
|
|
594 |
|
|
617 |
– |
|
618 |
– |
|
595 |
|
TMstruct * |
596 |
|
tmDup( /* duplicate top tone mapping */ |
597 |
|
TMstruct *tms |
608 |
|
return(NULL); |
609 |
|
*tmnew = *tms; /* copy everything */ |
610 |
|
if (tmnew->histo != NULL) { /* duplicate histogram */ |
611 |
< |
len = (tmnew->hbrmax-MINBRT)/HISTEP + 1 - |
612 |
< |
(tmnew->hbrmin-MINBRT)/HISTEP; |
637 |
< |
tmnew->histo = (int *)malloc(len*sizeof(int)); |
611 |
> |
len = HISTI(tmnew->hbrmax) + 1 - HISTI(tmnew->hbrmin); |
612 |
> |
tmnew->histo = (HIST_TYP *)malloc(len*sizeof(HIST_TYP)); |
613 |
|
if (tmnew->histo != NULL) |
614 |
< |
for (i = len; i--; ) |
615 |
< |
tmnew->histo[i] = tms->histo[i]; |
614 |
> |
memcpy((MEM_PTR)tmnew->histo, (MEM_PTR)tms->histo, |
615 |
> |
len*sizeof(HIST_TYP)); |
616 |
|
} |
617 |
|
if (tmnew->lumap != NULL) { /* duplicate luminance mapping */ |
618 |
|
len = tmnew->mbrmax-tmnew->mbrmin+1; |
619 |
< |
tmnew->lumap = (unsigned short *)malloc( |
645 |
< |
len*sizeof(unsigned short) ); |
619 |
> |
tmnew->lumap = (TMAP_TYP *)malloc(len*sizeof(TMAP_TYP)); |
620 |
|
if (tmnew->lumap != NULL) |
621 |
< |
for (i = len; i--; ) |
622 |
< |
tmnew->lumap[i] = tms->lumap[i]; |
621 |
> |
memcpy((MEM_PTR)tmnew->lumap, (MEM_PTR)tms->lumap, |
622 |
> |
len*sizeof(TMAP_TYP)); |
623 |
|
} |
624 |
|
/* clear package data */ |
625 |
|
for (i = tmNumPkgs; i--; ) |
651 |
|
|
652 |
|
/******************** Shared but Private library routines *********************/ |
653 |
|
|
654 |
< |
BYTE tmMesofact[BMESUPPER-BMESLOWER]; |
654 |
> |
uby8 tmMesofact[BMESUPPER-BMESLOWER]; |
655 |
|
|
656 |
|
void |
657 |
|
tmMkMesofact() /* build mesopic lookup factor table */ |
665 |
|
tmMesofact[i-BMESLOWER] = 256. * |
666 |
|
(tmLuminance(i) - LMESLOWER) / |
667 |
|
(LMESUPPER - LMESLOWER); |
668 |
+ |
} |
669 |
+ |
|
670 |
+ |
|
671 |
+ |
int |
672 |
+ |
tmNewMap( /* allocate new tone-mapping array */ |
673 |
+ |
TMstruct *tms |
674 |
+ |
) |
675 |
+ |
{ |
676 |
+ |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
677 |
+ |
(tms->hbrmax - tms->hbrmin)) { |
678 |
+ |
free((MEM_PTR)tms->lumap); |
679 |
+ |
tms->lumap = NULL; |
680 |
+ |
} |
681 |
+ |
tms->mbrmin = tms->hbrmin; |
682 |
+ |
tms->mbrmax = tms->hbrmax; |
683 |
+ |
if (tms->mbrmin > tms->mbrmax) |
684 |
+ |
return 0; |
685 |
+ |
if (tms->lumap == NULL) |
686 |
+ |
tms->lumap = (TMAP_TYP *)malloc(sizeof(TMAP_TYP)* |
687 |
+ |
(tms->mbrmax-tms->mbrmin+1)); |
688 |
+ |
return(tms->lumap != NULL); |
689 |
|
} |
690 |
|
|
691 |
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