| 12 |
|
#include "copyright.h" |
| 13 |
|
|
| 14 |
|
#include <stdio.h> |
| 15 |
+ |
#include <stdlib.h> |
| 16 |
|
#include <math.h> |
| 17 |
+ |
#include <string.h> |
| 18 |
|
#include "tmprivat.h" |
| 19 |
|
#include "tmerrmsg.h" |
| 20 |
|
|
| 67 |
|
tmnew->mongam = gamval; |
| 68 |
|
/* set color divisors */ |
| 69 |
|
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 |
|
|
| 72 |
|
/* set input transform */ |
| 73 |
|
tmnew->inppri = tmnew->monpri; |
| 123 |
|
tms->clf[GRN] = tms->cmat[1][1]; |
| 124 |
|
tms->clf[BLU] = tms->cmat[1][2]; |
| 125 |
|
} |
| 126 |
< |
tms->cmat[0][0] = tms->cmat[1][1] = tms->cmat[2][2] = |
| 125 |
< |
tms->inpsf; |
| 126 |
> |
tms->cmat[0][0] = tms->cmat[1][1] = tms->cmat[2][2] = 1.; |
| 127 |
|
tms->cmat[0][1] = tms->cmat[0][2] = tms->cmat[1][0] = |
| 128 |
|
tms->cmat[1][2] = tms->cmat[2][0] = tms->cmat[2][1] = 0.; |
| 129 |
|
|
| 130 |
< |
} else if (tms->inppri == TM_XYZPRIM) /* input is XYZ */ |
| 130 |
> |
} else if (tms->inppri == TM_XYZPRIM) { /* input is XYZ */ |
| 131 |
|
compxyz2rgbWBmat(tms->cmat, tms->monpri); |
| 132 |
|
|
| 133 |
< |
else { /* input is RGB */ |
| 133 |
> |
} else { /* input is RGB */ |
| 134 |
|
if (tms->inppri != tms->monpri && |
| 135 |
|
PRIMEQ(tms->inppri, tms->monpri)) |
| 136 |
|
tms->inppri = tms->monpri; /* no xform */ |
| 137 |
< |
comprgb2rgbWBmat(tms->cmat, tms->inppri, tms->monpri); |
| 137 |
> |
if (!comprgb2rgbWBmat(tms->cmat, tms->inppri, tms->monpri)) |
| 138 |
> |
returnErr(TM_E_ILLEGAL); |
| 139 |
|
} |
| 140 |
|
for (i = 0; i < 3; i++) |
| 141 |
|
for (j = 0; j < 3; j++) |
| 142 |
|
tms->cmat[i][j] *= tms->inpsf; |
| 143 |
|
/* set color divisors */ |
| 144 |
|
for (i = 0; i < 3; i++) |
| 145 |
< |
if (tms->clf[i] > .001) |
| 146 |
< |
tms->cdiv[i] = |
| 145 |
< |
256.*pow(tms->clf[i], 1./tms->mongam); |
| 146 |
< |
else |
| 147 |
< |
tms->cdiv[i] = 1; |
| 145 |
> |
tms->cdiv[i] = TM_BRES*pow(tms->clf[i] < .001 ? .001 : |
| 146 |
> |
tms->clf[i], 1./tms->mongam); |
| 147 |
|
/* notify packages */ |
| 148 |
|
for (i = tmNumPkgs; i--; ) |
| 149 |
|
if (tms->pd[i] != NULL && tmPkg[i]->NewSpace != NULL) |
| 159 |
|
{ |
| 160 |
|
if (tms == NULL || tms->histo == NULL) |
| 161 |
|
return; |
| 162 |
< |
free((MEM_PTR)tms->histo); |
| 162 |
> |
free(tms->histo); |
| 163 |
|
tms->histo = NULL; |
| 164 |
|
} |
| 165 |
|
|
| 178 |
|
#endif |
| 179 |
|
return(TM_NOBRT); |
| 180 |
|
d = TM_BRTSCALE*log(lum); |
| 181 |
< |
if (d > 0.) |
| 183 |
< |
return((TMbright)(d+.5)); |
| 184 |
< |
return((TMbright)(d-.5)); |
| 181 |
> |
return((TMbright)(d + .5 - (d < 0.))); |
| 182 |
|
} |
| 183 |
|
|
| 184 |
|
|
| 252 |
|
tmCvColors( /* convert float colors */ |
| 253 |
|
TMstruct *tms, |
| 254 |
|
TMbright *ls, |
| 255 |
< |
BYTE *cs, |
| 255 |
> |
uby8 *cs, |
| 256 |
|
COLOR *scan, |
| 257 |
|
int len |
| 258 |
|
) |
| 259 |
|
{ |
| 260 |
|
static const char funcName[] = "tmCvColors"; |
| 261 |
< |
static BYTE gamtab[1024]; |
| 261 |
> |
static uby8 gamtab[1024]; |
| 262 |
|
static double curgam = .0; |
| 263 |
|
COLOR cmon; |
| 264 |
|
float lum, slum, d; |
| 360 |
|
tms->hbrmin = tms->hbrmax = ls[i]; |
| 361 |
|
oldlen = 0; |
| 362 |
|
} else { |
| 363 |
< |
oldorig = (tms->hbrmin-MINBRT)/HISTEP; |
| 364 |
< |
oldlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - oldorig; |
| 363 |
> |
oldorig = HISTI(tms->hbrmin); |
| 364 |
> |
oldlen = HISTI(tms->hbrmax) + 1 - oldorig; |
| 365 |
|
} |
| 366 |
|
for (i = len; i--; ) { |
| 367 |
|
if ((j = ls[i]) < MINBRT) |
| 371 |
|
else if (j > tms->hbrmax) |
| 372 |
|
tms->hbrmax = j; |
| 373 |
|
} |
| 374 |
< |
horig = (tms->hbrmin-MINBRT)/HISTEP; |
| 375 |
< |
hlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - horig; |
| 374 |
> |
horig = HISTI(tms->hbrmin); |
| 375 |
> |
hlen = HISTI(tms->hbrmax) + 1 - horig; |
| 376 |
|
if (hlen > oldlen) { /* (re)allocate histogram */ |
| 377 |
< |
int *newhist = (int *)calloc(hlen, sizeof(int)); |
| 377 |
> |
HIST_TYP *newhist = (HIST_TYP *)calloc(hlen, sizeof(HIST_TYP)); |
| 378 |
|
if (newhist == NULL) |
| 379 |
|
returnErr(TM_E_NOMEM); |
| 380 |
|
if (oldlen) { /* copy and free old */ |
| 381 |
< |
for (i = oldlen, j = i+oldorig-horig; i; ) |
| 382 |
< |
newhist[--j] = tms->histo[--i]; |
| 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 |
|
} |
| 388 |
|
returnOK; |
| 389 |
|
for (i = len; i--; ) /* add in new counts */ |
| 390 |
|
if (ls[i] >= MINBRT) |
| 391 |
< |
tms->histo[ (ls[i]-MINBRT)/HISTEP - horig ] += wt; |
| 391 |
> |
tms->histo[ HISTI(ls[i]) - horig ] += wt; |
| 392 |
|
returnOK; |
| 393 |
|
} |
| 394 |
|
|
| 416 |
|
} |
| 417 |
|
|
| 418 |
|
|
| 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 |
– |
|
| 419 |
|
int |
| 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; |
| 428 |
> |
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); |
| 439 |
< |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) |
| 440 |
< |
tms->lumap[i] = 256. * exp( |
| 441 |
< |
( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
| 442 |
< |
/ gamval ); |
| 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 d; |
| 441 |
> |
d = expmult/tms->inpsf * tmLuminance(tms->mbrmin + i); |
| 442 |
> |
if (d <= minD) |
| 443 |
> |
break; /* map initialized to zeroes */ |
| 444 |
> |
d = (d - minD)/(1. - minD); |
| 445 |
> |
d = TM_BRES*pow(d, 1./gamval); |
| 446 |
> |
tms->lumap[i] = (d >= maxV) ? maxV : (int)d; |
| 447 |
> |
} |
| 448 |
|
returnOK; |
| 449 |
|
} |
| 450 |
|
|
| 458 |
|
) |
| 459 |
|
{ |
| 460 |
|
static const char funcName[] = "tmComputeMapping"; |
| 461 |
< |
int *histo; |
| 461 |
> |
HIST_TYP *histo; |
| 462 |
|
float *cumf; |
| 463 |
< |
int brt0, histlen, threshold, ceiling, trimmings; |
| 464 |
< |
double logLddyn, Ldmin, Ldavg, Lwavg, Tr, Lw, Ld; |
| 465 |
< |
int32 histot; |
| 463 |
> |
int brt0, histlen; |
| 464 |
> |
HIST_TYP threshold, ceiling, trimmings, histot; |
| 465 |
> |
double logLddyn, Ldmin, Lwavg, Tr, Lw, Ld; |
| 466 |
|
double sum; |
| 467 |
|
double d; |
| 468 |
|
int i, j; |
| 476 |
|
/* compute handy values */ |
| 477 |
|
Ldmin = Ldmax/Lddyn; |
| 478 |
|
logLddyn = log(Lddyn); |
| 479 |
< |
Ldavg = sqrt(Ldmax*Ldmin); |
| 480 |
< |
i = (tms->hbrmin-MINBRT)/HISTEP; |
| 481 |
< |
brt0 = MINBRT + HISTEP/2 + i*HISTEP; |
| 499 |
< |
histlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - i; |
| 479 |
> |
i = HISTI(tms->hbrmin); |
| 480 |
> |
brt0 = HISTV(i); |
| 481 |
> |
histlen = HISTI(tms->hbrmax) + 1 - i; |
| 482 |
|
/* histogram total and mean */ |
| 483 |
|
histot = 0; sum = 0; |
| 484 |
|
j = brt0 + histlen*HISTEP; |
| 485 |
|
for (i = histlen; i--; ) { |
| 486 |
|
histot += tms->histo[i]; |
| 487 |
< |
sum += (j -= HISTEP) * tms->histo[i]; |
| 487 |
> |
sum += (double)(j -= HISTEP) * tms->histo[i]; |
| 488 |
|
} |
| 489 |
< |
threshold = histot*0.005 + .5; |
| 490 |
< |
if (threshold < 4) |
| 489 |
> |
threshold = histot*0.002 + .5; |
| 490 |
> |
if (!histot) |
| 491 |
|
returnErr(TM_E_TMFAIL); |
| 492 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
| 511 |
– |
/* allocate space for mapping */ |
| 512 |
– |
if (!tmNewMap(tms)) |
| 513 |
– |
returnErr(TM_E_NOMEM); |
| 493 |
|
/* use linear tone mapping? */ |
| 494 |
< |
if (tms->flags & TM_F_LINEAR) |
| 494 |
> |
if (tms->flags & TM_F_LINEAR || threshold < 4 || |
| 495 |
> |
tms->hbrmax - tms->hbrmin < TM_BRTSCALE*logLddyn) |
| 496 |
|
goto linearmap; |
| 497 |
|
/* clamp histogram */ |
| 498 |
< |
histo = (int *)malloc(histlen*sizeof(int)); |
| 498 |
> |
histo = (HIST_TYP *)malloc(histlen*sizeof(HIST_TYP)); |
| 499 |
|
cumf = (float *)malloc((histlen+2)*sizeof(float)); |
| 500 |
|
if ((histo == NULL) | (cumf == NULL)) |
| 501 |
|
returnErr(TM_E_NOMEM); |
| 502 |
|
cumf[histlen+1] = 1.; /* guard for assignment code */ |
| 503 |
< |
for (i = histlen; i--; ) /* make malleable copy */ |
| 504 |
< |
histo[i] = tms->histo[i]; |
| 503 |
> |
/* make malleable copy */ |
| 504 |
> |
memcpy(histo, tms->histo, histlen*sizeof(HIST_TYP)); |
| 505 |
|
do { /* iterate to solution */ |
| 506 |
|
sum = 0; /* cumulative probability */ |
| 507 |
|
for (i = 0; i < histlen; i++) { |
| 508 |
< |
cumf[i] = (double)sum/histot; |
| 509 |
< |
sum += histo[i]; |
| 508 |
> |
cumf[i] = sum/histot; |
| 509 |
> |
sum += (double)histo[i]; |
| 510 |
|
} |
| 511 |
|
cumf[histlen] = 1.; |
| 512 |
|
Tr = histot * (double)(tms->hbrmax - tms->hbrmin) / |
| 513 |
< |
((double)histlen*TM_BRTSCALE) / logLddyn; |
| 513 |
> |
((double)TM_BRTSCALE*histlen*logLddyn); |
| 514 |
|
ceiling = Tr + 1.; |
| 515 |
|
trimmings = 0; /* clip to envelope */ |
| 516 |
|
for (i = histlen; i--; ) { |
| 528 |
|
} |
| 529 |
|
/* check if we're out of data */ |
| 530 |
|
if ((histot -= trimmings) <= threshold) { |
| 531 |
< |
free((MEM_PTR)histo); |
| 532 |
< |
free((MEM_PTR)cumf); |
| 531 |
> |
free(histo); |
| 532 |
> |
free(cumf); |
| 533 |
|
goto linearmap; |
| 534 |
|
} |
| 535 |
|
} while (trimmings > threshold); |
| 536 |
+ |
/* allocate space for mapping */ |
| 537 |
+ |
if (!tmNewMap(tms)) |
| 538 |
+ |
returnErr(TM_E_NOMEM); |
| 539 |
|
/* assign tone-mapping */ |
| 540 |
|
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
| 541 |
|
j = d = (double)i/(tms->mbrmax-tms->mbrmin)*histlen; |
| 542 |
|
d -= (double)j; |
| 543 |
|
Ld = Ldmin*exp(logLddyn*((1.-d)*cumf[j]+d*cumf[j+1])); |
| 544 |
|
d = (Ld - Ldmin)/(Ldmax - Ldmin); |
| 545 |
< |
tms->lumap[i] = 256.*pow(d, 1./gamval); |
| 545 |
> |
tms->lumap[i] = TM_BRES*pow(d, 1./gamval); |
| 546 |
|
} |
| 547 |
< |
free((MEM_PTR)histo); /* clean up and return */ |
| 548 |
< |
free((MEM_PTR)cumf); |
| 547 |
> |
free(histo); /* clean up and return */ |
| 548 |
> |
free(cumf); |
| 549 |
|
returnOK; |
| 550 |
|
linearmap: /* linear tone-mapping */ |
| 551 |
|
if (tms->flags & TM_F_HCONTR) |
| 552 |
< |
d = htcontrs(Ldavg) / htcontrs(Lwavg); |
| 552 |
> |
d = htcontrs(sqrt(Ldmax*Ldmin)) / htcontrs(Lwavg); |
| 553 |
|
else |
| 554 |
< |
d = Ldavg / Lwavg; |
| 555 |
< |
return(tmFixedMapping(tms, tms->inpsf*d/Ldmax, gamval)); |
| 554 |
> |
d = Ldmax / tmLuminance(tms->hbrmax); |
| 555 |
> |
return(tmFixedMapping(tms, tms->inpsf*d/Ldmax, gamval, Lddyn)); |
| 556 |
|
} |
| 557 |
|
|
| 558 |
|
|
| 559 |
|
int |
| 560 |
|
tmMapPixels( /* apply tone-mapping to pixel(s) */ |
| 561 |
|
TMstruct *tms, |
| 562 |
< |
BYTE *ps, |
| 562 |
> |
uby8 *ps, |
| 563 |
|
TMbright *ls, |
| 564 |
< |
BYTE *cs, |
| 564 |
> |
uby8 *cs, |
| 565 |
|
int len |
| 566 |
|
) |
| 567 |
|
{ |
| 568 |
|
static const char funcName[] = "tmMapPixels"; |
| 569 |
< |
int32 li, pv; |
| 569 |
> |
TMbright lv; |
| 570 |
> |
TMAP_TYP li; |
| 571 |
> |
int pv; |
| 572 |
|
|
| 573 |
|
if (tms == NULL || tms->lumap == NULL) |
| 574 |
|
returnErr(TM_E_TMINVAL); |
| 575 |
|
if ((ps == NULL) | (ls == NULL) | (len < 0)) |
| 576 |
|
returnErr(TM_E_ILLEGAL); |
| 577 |
|
while (len--) { |
| 578 |
< |
if ((li = *ls++) < tms->mbrmin) { |
| 578 |
> |
if ((lv = *ls++) < tms->mbrmin) { |
| 579 |
|
li = 0; |
| 580 |
|
} else { |
| 581 |
< |
if (li > tms->mbrmax) |
| 582 |
< |
li = tms->mbrmax; |
| 583 |
< |
li = tms->lumap[li - tms->mbrmin]; |
| 581 |
> |
if (lv > tms->mbrmax) |
| 582 |
> |
lv = tms->mbrmax; |
| 583 |
> |
li = tms->lumap[lv - tms->mbrmin]; |
| 584 |
|
} |
| 585 |
< |
if (cs == TM_NOCHROM) |
| 586 |
< |
*ps++ = li>255 ? 255 : li; |
| 587 |
< |
else { |
| 585 |
> |
if (cs == TM_NOCHROM) { |
| 586 |
> |
#if !(TM_BRES & 0xff) |
| 587 |
> |
*ps++ = li>=TM_BRES ? 255 : li/(TM_BRES>>8); |
| 588 |
> |
#else |
| 589 |
> |
*ps++ = li>=TM_BRES ? 255 : (li<<8)/TM_BRES; |
| 590 |
> |
#endif |
| 591 |
> |
} else { |
| 592 |
|
pv = *cs++ * li / tms->cdiv[RED]; |
| 593 |
|
*ps++ = pv>255 ? 255 : pv; |
| 594 |
|
pv = *cs++ * li / tms->cdiv[GRN]; |
| 601 |
|
} |
| 602 |
|
|
| 603 |
|
|
| 615 |
– |
|
| 616 |
– |
|
| 604 |
|
TMstruct * |
| 605 |
< |
tmDup( /* duplicate top tone mapping */ |
| 605 |
> |
tmDup( /* duplicate tone mapping */ |
| 606 |
|
TMstruct *tms |
| 607 |
|
) |
| 608 |
|
{ |
| 617 |
|
return(NULL); |
| 618 |
|
*tmnew = *tms; /* copy everything */ |
| 619 |
|
if (tmnew->histo != NULL) { /* duplicate histogram */ |
| 620 |
< |
len = (tmnew->hbrmax-MINBRT)/HISTEP + 1 - |
| 621 |
< |
(tmnew->hbrmin-MINBRT)/HISTEP; |
| 635 |
< |
tmnew->histo = (int *)malloc(len*sizeof(int)); |
| 620 |
> |
len = HISTI(tmnew->hbrmax) + 1 - HISTI(tmnew->hbrmin); |
| 621 |
> |
tmnew->histo = (HIST_TYP *)malloc(len*sizeof(HIST_TYP)); |
| 622 |
|
if (tmnew->histo != NULL) |
| 623 |
< |
for (i = len; i--; ) |
| 638 |
< |
tmnew->histo[i] = tms->histo[i]; |
| 623 |
> |
memcpy(tmnew->histo, tms->histo, len*sizeof(HIST_TYP)); |
| 624 |
|
} |
| 625 |
|
if (tmnew->lumap != NULL) { /* duplicate luminance mapping */ |
| 626 |
|
len = tmnew->mbrmax-tmnew->mbrmin+1; |
| 627 |
< |
tmnew->lumap = (unsigned short *)malloc( |
| 643 |
< |
len*sizeof(unsigned short) ); |
| 627 |
> |
tmnew->lumap = (TMAP_TYP *)malloc(len*sizeof(TMAP_TYP)); |
| 628 |
|
if (tmnew->lumap != NULL) |
| 629 |
< |
for (i = len; i--; ) |
| 646 |
< |
tmnew->lumap[i] = tms->lumap[i]; |
| 629 |
> |
memcpy(tmnew->lumap, tms->lumap, len*sizeof(TMAP_TYP)); |
| 630 |
|
} |
| 631 |
|
/* clear package data */ |
| 632 |
|
for (i = tmNumPkgs; i--; ) |
| 646 |
|
return; |
| 647 |
|
/* free tables */ |
| 648 |
|
if (tms->histo != NULL) |
| 649 |
< |
free((MEM_PTR)tms->histo); |
| 649 |
> |
free(tms->histo); |
| 650 |
|
if (tms->lumap != NULL) |
| 651 |
< |
free((MEM_PTR)tms->lumap); |
| 651 |
> |
free(tms->lumap); |
| 652 |
|
/* free private data */ |
| 653 |
|
for (i = tmNumPkgs; i--; ) |
| 654 |
|
if (tms->pd[i] != NULL) |
| 655 |
|
(*tmPkg[i]->Free)(tms->pd[i]); |
| 656 |
< |
free((MEM_PTR)tms); /* free basic structure */ |
| 656 |
> |
free(tms); /* free basic structure */ |
| 657 |
|
} |
| 658 |
|
|
| 659 |
|
/******************** Shared but Private library routines *********************/ |
| 660 |
|
|
| 661 |
< |
BYTE tmMesofact[BMESUPPER-BMESLOWER]; |
| 661 |
> |
uby8 tmMesofact[BMESUPPER-BMESLOWER]; |
| 662 |
|
|
| 663 |
|
void |
| 664 |
|
tmMkMesofact() /* build mesopic lookup factor table */ |
| 672 |
|
tmMesofact[i-BMESLOWER] = 256. * |
| 673 |
|
(tmLuminance(i) - LMESLOWER) / |
| 674 |
|
(LMESUPPER - LMESLOWER); |
| 675 |
+ |
} |
| 676 |
+ |
|
| 677 |
+ |
|
| 678 |
+ |
int |
| 679 |
+ |
tmNewMap( /* allocate new tone-mapping array */ |
| 680 |
+ |
TMstruct *tms |
| 681 |
+ |
) |
| 682 |
+ |
{ |
| 683 |
+ |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
| 684 |
+ |
(tms->hbrmax - tms->hbrmin)) { |
| 685 |
+ |
free(tms->lumap); |
| 686 |
+ |
tms->lumap = NULL; |
| 687 |
+ |
} |
| 688 |
+ |
tms->mbrmin = tms->hbrmin; |
| 689 |
+ |
tms->mbrmax = tms->hbrmax; |
| 690 |
+ |
if (tms->mbrmin > tms->mbrmax) |
| 691 |
+ |
return 0; |
| 692 |
+ |
if (tms->lumap == NULL) |
| 693 |
+ |
tms->lumap = (TMAP_TYP *)calloc(tms->mbrmax-tms->mbrmin+1, |
| 694 |
+ |
sizeof(TMAP_TYP)); |
| 695 |
+ |
else |
| 696 |
+ |
memset(tms->lumap, 0, (tms->mbrmax-tms->mbrmin+1)*sizeof(TMAP_TYP)); |
| 697 |
+ |
|
| 698 |
+ |
return(tms->lumap != NULL); |
| 699 |
|
} |
| 700 |
|
|
| 701 |
|
|