75 |
|
tmnew->inpsf = WHTEFFICACY; |
76 |
|
tmnew->cmat[0][1] = tmnew->cmat[0][2] = tmnew->cmat[1][0] = |
77 |
|
tmnew->cmat[1][2] = tmnew->cmat[2][0] = tmnew->cmat[2][1] = 0.; |
78 |
– |
tmnew->inpdat = NULL; |
78 |
|
tmnew->hbrmin = 10; tmnew->hbrmax = -10; |
79 |
|
tmnew->histo = NULL; |
80 |
|
tmnew->mbrmin = 10; tmnew->mbrmax = -10; |
93 |
|
tmSetSpace( /* set input color space for conversions */ |
94 |
|
TMstruct *tms, |
95 |
|
RGBPRIMP pri, |
96 |
< |
double sf, |
98 |
< |
MEM_PTR dat |
96 |
> |
double sf |
97 |
|
) |
98 |
|
{ |
99 |
|
static const char funcName[] = "tmSetSpace"; |
104 |
|
if (sf <= 1e-12) |
105 |
|
returnErr(TM_E_ILLEGAL); |
106 |
|
/* check if no change */ |
107 |
< |
if (pri == tms->inppri && FEQ(sf, tms->inpsf) && dat == tms->inpdat) |
107 |
> |
if (pri == tms->inppri && FEQ(sf, tms->inpsf)) |
108 |
|
returnOK; |
109 |
|
tms->inppri = pri; /* let's set it */ |
110 |
|
tms->inpsf = sf; |
113 |
– |
tms->inpdat = dat; |
111 |
|
|
112 |
|
if (tms->flags & TM_F_BW) { /* color doesn't matter */ |
113 |
|
tms->monpri = tms->inppri; /* eliminate xform */ |
120 |
|
tms->clf[GRN] = tms->cmat[1][1]; |
121 |
|
tms->clf[BLU] = tms->cmat[1][2]; |
122 |
|
} |
123 |
< |
tms->cmat[0][0] = tms->cmat[1][1] = tms->cmat[2][2] = |
127 |
< |
tms->inpsf; |
123 |
> |
tms->cmat[0][0] = tms->cmat[1][1] = tms->cmat[2][2] = 1.; |
124 |
|
tms->cmat[0][1] = tms->cmat[0][2] = tms->cmat[1][0] = |
125 |
|
tms->cmat[1][2] = tms->cmat[2][0] = tms->cmat[2][1] = 0.; |
126 |
|
|
127 |
< |
} else if (tms->inppri == TM_XYZPRIM) /* input is XYZ */ |
127 |
> |
} else if (tms->inppri == TM_XYZPRIM) { /* input is XYZ */ |
128 |
|
compxyz2rgbWBmat(tms->cmat, tms->monpri); |
129 |
|
|
130 |
< |
else { /* input is RGB */ |
130 |
> |
} else { /* input is RGB */ |
131 |
|
if (tms->inppri != tms->monpri && |
132 |
|
PRIMEQ(tms->inppri, tms->monpri)) |
133 |
|
tms->inppri = tms->monpri; /* no xform */ |
156 |
|
{ |
157 |
|
if (tms == NULL || tms->histo == NULL) |
158 |
|
return; |
159 |
< |
free((MEM_PTR)tms->histo); |
159 |
> |
free(tms->histo); |
160 |
> |
tms->hbrmin = 10; tms->hbrmax = -10; |
161 |
|
tms->histo = NULL; |
162 |
|
} |
163 |
|
|
318 |
|
cmon[BLU] += d; |
319 |
|
} |
320 |
|
} else if (tms->flags & TM_F_BW) { |
321 |
< |
cmon[RED] = cmon[GRN] = cmon[BLU] = lum; |
321 |
> |
int j = 3; |
322 |
> |
while (j--) cs[3*i+j] = tms->cdiv[j]/(TM_BRES>>8); |
323 |
> |
continue; |
324 |
|
} |
325 |
|
d = tms->clf[RED]*cmon[RED]/lum; |
326 |
|
cs[3*i ] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
343 |
|
{ |
344 |
|
static const char funcName[] = "tmAddHisto"; |
345 |
|
int oldorig=0, oldlen, horig, hlen; |
346 |
< |
int i, j; |
346 |
> |
int i; |
347 |
|
|
348 |
|
if (tms == NULL) |
349 |
|
returnErr(TM_E_TMINVAL); |
364 |
|
oldlen = HISTI(tms->hbrmax) + 1 - oldorig; |
365 |
|
} |
366 |
|
for (i = len; i--; ) { |
367 |
< |
if ((j = ls[i]) < MINBRT) |
367 |
> |
if (ls[i] < MINBRT) |
368 |
|
continue; |
369 |
< |
if (j < tms->hbrmin) |
370 |
< |
tms->hbrmin = j; |
371 |
< |
else if (j > tms->hbrmax) |
372 |
< |
tms->hbrmax = j; |
369 |
> |
if (ls[i] < tms->hbrmin) |
370 |
> |
tms->hbrmin = ls[i]; |
371 |
> |
else if (ls[i] > tms->hbrmax) |
372 |
> |
tms->hbrmax = ls[i]; |
373 |
|
} |
374 |
|
horig = HISTI(tms->hbrmin); |
375 |
|
hlen = HISTI(tms->hbrmax) + 1 - horig; |
378 |
|
if (newhist == NULL) |
379 |
|
returnErr(TM_E_NOMEM); |
380 |
|
if (oldlen) { /* copy and free old */ |
381 |
< |
memcpy((MEM_PTR)(newhist+(oldorig-horig)), |
382 |
< |
(MEM_PTR)tms->histo, oldlen*sizeof(HIST_TYP)); |
383 |
< |
free((MEM_PTR)tms->histo); |
381 |
> |
memcpy(newhist+(oldorig-horig), |
382 |
> |
tms->histo, oldlen*sizeof(HIST_TYP)); |
383 |
> |
free(tms->histo); |
384 |
|
} |
385 |
|
tms->histo = newhist; |
386 |
|
} |
420 |
|
tmFixedMapping( /* compute fixed, linear tone-mapping */ |
421 |
|
TMstruct *tms, |
422 |
|
double expmult, |
423 |
< |
double gamval |
423 |
> |
double gamval, |
424 |
> |
double Lddyn |
425 |
|
) |
426 |
|
{ |
427 |
|
static const char funcName[] = "tmFixedMapping"; |
428 |
< |
double d; |
429 |
< |
int i; |
428 |
> |
const int maxV = (1L<<(8*sizeof(TMAP_TYP))) - 1; |
429 |
> |
double minD; |
430 |
> |
int i; |
431 |
|
|
432 |
|
if (!tmNewMap(tms)) |
433 |
|
returnErr(TM_E_NOMEM); |
434 |
< |
if (expmult <= .0) |
435 |
< |
expmult = 1.; |
436 |
< |
if (gamval < MINGAM) |
437 |
< |
gamval = tms->mongam; |
438 |
< |
d = log(expmult/tms->inpsf); |
434 |
> |
/* check arguments */ |
435 |
> |
if (expmult <= .0) expmult = 1.; |
436 |
> |
if (gamval < MINGAM) gamval = tms->mongam; |
437 |
> |
if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
438 |
> |
minD = 1./Lddyn; |
439 |
|
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
440 |
< |
double val = TM_BRES * exp( |
441 |
< |
( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
442 |
< |
/ gamval); |
443 |
< |
tms->lumap[i] = val; |
444 |
< |
if (sizeof(TMAP_TYP) == 2 && val >= 0xffff) |
445 |
< |
tms->lumap[i] = 0xffff; |
440 |
> |
double d; |
441 |
> |
d = expmult/tms->inpsf * tmLuminance(tms->mbrmin + i); |
442 |
> |
if (d >= 2.*minD) |
443 |
> |
d -= minD; |
444 |
> |
else /* soft black crushing */ |
445 |
> |
d *= d/(4.*minD); |
446 |
> |
d /= 1. - minD; |
447 |
> |
d = TM_BRES*pow(d, 1./gamval); |
448 |
> |
tms->lumap[i] = (d > maxV) ? maxV : (int)d; |
449 |
|
} |
450 |
|
returnOK; |
451 |
|
} |
464 |
|
float *cumf; |
465 |
|
int brt0, histlen; |
466 |
|
HIST_TYP threshold, ceiling, trimmings, histot; |
467 |
< |
double logLddyn, Ldmin, Ldavg, Lwavg, Tr, Lw, Ld; |
467 |
> |
double logLddyn, Ldmin, Lwavg, Tr, Lw, Ld; |
468 |
|
double sum; |
469 |
|
double d; |
470 |
|
int i, j; |
478 |
|
/* compute handy values */ |
479 |
|
Ldmin = Ldmax/Lddyn; |
480 |
|
logLddyn = log(Lddyn); |
477 |
– |
Ldavg = sqrt(Ldmax*Ldmin); |
481 |
|
i = HISTI(tms->hbrmin); |
482 |
|
brt0 = HISTV(i); |
483 |
|
histlen = HISTI(tms->hbrmax) + 1 - i; |
488 |
|
histot += tms->histo[i]; |
489 |
|
sum += (double)(j -= HISTEP) * tms->histo[i]; |
490 |
|
} |
488 |
– |
threshold = histot*0.005 + .5; |
491 |
|
if (!histot) |
492 |
|
returnErr(TM_E_TMFAIL); |
493 |
+ |
threshold = histot/500 + 1; |
494 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
495 |
|
/* use linear tone mapping? */ |
496 |
< |
if (tms->flags & TM_F_LINEAR || threshold < 4 || |
496 |
> |
if (tms->flags & TM_F_LINEAR || |
497 |
|
tms->hbrmax - tms->hbrmin < TM_BRTSCALE*logLddyn) |
498 |
|
goto linearmap; |
499 |
|
/* clamp histogram */ |
502 |
|
if ((histo == NULL) | (cumf == NULL)) |
503 |
|
returnErr(TM_E_NOMEM); |
504 |
|
cumf[histlen+1] = 1.; /* guard for assignment code */ |
505 |
< |
for (i = histlen; i--; ) /* make malleable copy */ |
506 |
< |
histo[i] = tms->histo[i]; |
505 |
> |
/* make malleable copy */ |
506 |
> |
memcpy(histo, tms->histo, histlen*sizeof(HIST_TYP)); |
507 |
|
do { /* iterate to solution */ |
508 |
|
sum = 0; /* cumulative probability */ |
509 |
|
for (i = 0; i < histlen; i++) { |
510 |
< |
cumf[i] = (double)sum/histot; |
511 |
< |
sum += histo[i]; |
510 |
> |
cumf[i] = sum/histot; |
511 |
> |
sum += (double)histo[i]; |
512 |
|
} |
513 |
|
cumf[histlen] = 1.; |
514 |
|
Tr = histot * (double)(tms->hbrmax - tms->hbrmin) / |
515 |
< |
((double)histlen*TM_BRTSCALE) / logLddyn; |
515 |
> |
((double)TM_BRTSCALE*histlen*logLddyn); |
516 |
|
ceiling = Tr + 1.; |
517 |
|
trimmings = 0; /* clip to envelope */ |
518 |
|
for (i = histlen; i--; ) { |
530 |
|
} |
531 |
|
/* check if we're out of data */ |
532 |
|
if ((histot -= trimmings) <= threshold) { |
533 |
< |
free((MEM_PTR)histo); |
534 |
< |
free((MEM_PTR)cumf); |
533 |
> |
free(histo); |
534 |
> |
free(cumf); |
535 |
|
goto linearmap; |
536 |
|
} |
537 |
< |
} while (trimmings > threshold); |
537 |
> |
} while (40*trimmings > histot); |
538 |
|
/* allocate space for mapping */ |
539 |
|
if (!tmNewMap(tms)) |
540 |
|
returnErr(TM_E_NOMEM); |
546 |
|
d = (Ld - Ldmin)/(Ldmax - Ldmin); |
547 |
|
tms->lumap[i] = TM_BRES*pow(d, 1./gamval); |
548 |
|
} |
549 |
< |
free((MEM_PTR)histo); /* clean up and return */ |
550 |
< |
free((MEM_PTR)cumf); |
549 |
> |
free(histo); /* clean up and return */ |
550 |
> |
free(cumf); |
551 |
|
returnOK; |
552 |
|
linearmap: /* linear tone-mapping */ |
553 |
|
if (tms->flags & TM_F_HCONTR) |
554 |
< |
d = htcontrs(Ldavg) / htcontrs(Lwavg); |
554 |
> |
d = htcontrs(sqrt(Ldmax*Ldmin)) / htcontrs(Lwavg); |
555 |
|
else |
556 |
< |
d = Ldavg / Lwavg; |
557 |
< |
return(tmFixedMapping(tms, tms->inpsf*d/Ldmax, gamval)); |
556 |
> |
d = Ldmax / tmLuminance(tms->hbrmax); |
557 |
> |
return(tmFixedMapping(tms, tms->inpsf*d/Ldmax, gamval, Lddyn)); |
558 |
|
} |
559 |
|
|
560 |
|
|
584 |
|
lv = tms->mbrmax; |
585 |
|
li = tms->lumap[lv - tms->mbrmin]; |
586 |
|
} |
587 |
< |
if (cs == TM_NOCHROM) |
588 |
< |
*ps++ = li>=TM_BRES ? 255 : (int)(256*li/TM_BRES); |
589 |
< |
else { |
587 |
> |
if (cs == TM_NOCHROM) { |
588 |
> |
#if !(TM_BRES & 0xff) |
589 |
> |
*ps++ = li>=TM_BRES ? 255 : li/(TM_BRES>>8); |
590 |
> |
#else |
591 |
> |
*ps++ = li>=TM_BRES ? 255 : (li<<8)/TM_BRES; |
592 |
> |
#endif |
593 |
> |
} else { |
594 |
|
pv = *cs++ * li / tms->cdiv[RED]; |
595 |
|
*ps++ = pv>255 ? 255 : pv; |
596 |
|
pv = *cs++ * li / tms->cdiv[GRN]; |
604 |
|
|
605 |
|
|
606 |
|
TMstruct * |
607 |
< |
tmDup( /* duplicate top tone mapping */ |
607 |
> |
tmDup( /* duplicate tone mapping */ |
608 |
|
TMstruct *tms |
609 |
|
) |
610 |
|
{ |
622 |
|
len = HISTI(tmnew->hbrmax) + 1 - HISTI(tmnew->hbrmin); |
623 |
|
tmnew->histo = (HIST_TYP *)malloc(len*sizeof(HIST_TYP)); |
624 |
|
if (tmnew->histo != NULL) |
625 |
< |
memcpy((MEM_PTR)tmnew->histo, (MEM_PTR)tms->histo, |
619 |
< |
len*sizeof(HIST_TYP)); |
625 |
> |
memcpy(tmnew->histo, tms->histo, len*sizeof(HIST_TYP)); |
626 |
|
} |
627 |
|
if (tmnew->lumap != NULL) { /* duplicate luminance mapping */ |
628 |
|
len = tmnew->mbrmax-tmnew->mbrmin+1; |
629 |
|
tmnew->lumap = (TMAP_TYP *)malloc(len*sizeof(TMAP_TYP)); |
630 |
|
if (tmnew->lumap != NULL) |
631 |
< |
memcpy((MEM_PTR)tmnew->lumap, (MEM_PTR)tms->lumap, |
626 |
< |
len*sizeof(TMAP_TYP)); |
631 |
> |
memcpy(tmnew->lumap, tms->lumap, len*sizeof(TMAP_TYP)); |
632 |
|
} |
633 |
|
/* clear package data */ |
634 |
|
for (i = tmNumPkgs; i--; ) |
648 |
|
return; |
649 |
|
/* free tables */ |
650 |
|
if (tms->histo != NULL) |
651 |
< |
free((MEM_PTR)tms->histo); |
651 |
> |
free(tms->histo); |
652 |
|
if (tms->lumap != NULL) |
653 |
< |
free((MEM_PTR)tms->lumap); |
653 |
> |
free(tms->lumap); |
654 |
|
/* free private data */ |
655 |
|
for (i = tmNumPkgs; i--; ) |
656 |
|
if (tms->pd[i] != NULL) |
657 |
|
(*tmPkg[i]->Free)(tms->pd[i]); |
658 |
< |
free((MEM_PTR)tms); /* free basic structure */ |
658 |
> |
free(tms); /* free basic structure */ |
659 |
|
} |
660 |
|
|
661 |
|
/******************** Shared but Private library routines *********************/ |
684 |
|
{ |
685 |
|
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
686 |
|
(tms->hbrmax - tms->hbrmin)) { |
687 |
< |
free((MEM_PTR)tms->lumap); |
687 |
> |
free(tms->lumap); |
688 |
|
tms->lumap = NULL; |
689 |
|
} |
690 |
|
tms->mbrmin = tms->hbrmin; |
691 |
|
tms->mbrmax = tms->hbrmax; |
692 |
|
if (tms->mbrmin > tms->mbrmax) |
693 |
< |
return 0; |
693 |
> |
return(0); |
694 |
|
if (tms->lumap == NULL) |
695 |
< |
tms->lumap = (TMAP_TYP *)malloc(sizeof(TMAP_TYP)* |
696 |
< |
(tms->mbrmax-tms->mbrmin+1)); |
695 |
> |
tms->lumap = (TMAP_TYP *)calloc(tms->mbrmax-tms->mbrmin+1, |
696 |
> |
sizeof(TMAP_TYP)); |
697 |
> |
else |
698 |
> |
memset(tms->lumap, 0, (tms->mbrmax-tms->mbrmin+1)*sizeof(TMAP_TYP)); |
699 |
> |
|
700 |
|
return(tms->lumap != NULL); |
701 |
|
} |
702 |
|
|