| 458 |
|
if (gamval < MINGAM) |
| 459 |
|
gamval = tms->mongam; |
| 460 |
|
d = log(expmult/tms->inpsf); |
| 461 |
< |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) |
| 462 |
< |
tms->lumap[i] = 256. * exp( |
| 461 |
> |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
| 462 |
> |
double val = 256. * exp( |
| 463 |
|
( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
| 464 |
< |
/ gamval ); |
| 464 |
> |
/ gamval); |
| 465 |
> |
tms->lumap[i] = val >= (double)0xffff ? 0xffff : (int)val; |
| 466 |
> |
} |
| 467 |
|
returnOK; |
| 468 |
|
} |
| 469 |
|
|
| 507 |
|
sum += (j -= HISTEP) * tms->histo[i]; |
| 508 |
|
} |
| 509 |
|
threshold = histot*0.005 + .5; |
| 510 |
< |
if (threshold < 4) |
| 510 |
> |
if (!histot) |
| 511 |
|
returnErr(TM_E_TMFAIL); |
| 512 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
| 513 |
+ |
/* use linear tone mapping? */ |
| 514 |
+ |
if (tms->flags & TM_F_LINEAR || threshold < 4) |
| 515 |
+ |
goto linearmap; |
| 516 |
|
/* allocate space for mapping */ |
| 517 |
|
if (!tmNewMap(tms)) |
| 518 |
|
returnErr(TM_E_NOMEM); |
| 514 |
– |
/* use linear tone mapping? */ |
| 515 |
– |
if (tms->flags & TM_F_LINEAR) |
| 516 |
– |
goto linearmap; |
| 519 |
|
/* clamp histogram */ |
| 520 |
|
histo = (int *)malloc(histlen*sizeof(int)); |
| 521 |
|
cumf = (float *)malloc((histlen+2)*sizeof(float)); |
