| 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 |
|
|
| 24 |
|
struct tmPackage *tmPkg[TM_MAXPKG]; |
| 25 |
|
int tmNumPkgs = 0; /* number of registered packages */ |
| 26 |
|
|
| 27 |
+ |
/* luminance->brightness lookup */ |
| 28 |
+ |
static TMbright *tmFloat2BrtLUT = NULL; |
| 29 |
|
|
| 30 |
+ |
#define tmCvLumLUfp(pf) tmFloat2BrtLUT[*(int32 *)(pf) >> 15] |
| 31 |
+ |
|
| 32 |
+ |
|
| 33 |
|
TMstruct * |
| 34 |
|
tmInit( /* initialize new tone mapping */ |
| 35 |
|
int flags, |
| 55 |
|
tmnew->clf[GRN] = rgb2xyzmat[1][1]; |
| 56 |
|
tmnew->clf[BLU] = rgb2xyzmat[1][2]; |
| 57 |
|
} else { |
| 58 |
< |
comprgb2xyzWBmat(cmat, tmnew->monpri=monpri); |
| 58 |
> |
comprgb2xyzmat(cmat, tmnew->monpri=monpri); |
| 59 |
|
tmnew->clf[RED] = cmat[1][0]; |
| 60 |
|
tmnew->clf[GRN] = cmat[1][1]; |
| 61 |
|
tmnew->clf[BLU] = cmat[1][2]; |
| 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; |
| 118 |
|
tms->clf[CIEX] = tms->clf[CIEZ] = 0.; |
| 119 |
|
tms->clf[CIEY] = 1.; |
| 120 |
|
} else { |
| 121 |
< |
comprgb2xyzWBmat(tms->cmat, tms->monpri); |
| 121 |
> |
comprgb2xyzmat(tms->cmat, tms->monpri); |
| 122 |
|
tms->clf[RED] = tms->cmat[1][0]; |
| 123 |
|
tms->clf[GRN] = tms->cmat[1][1]; |
| 124 |
|
tms->clf[BLU] = tms->cmat[1][2]; |
| 135 |
|
if (tms->inppri != tms->monpri && |
| 136 |
|
PRIMEQ(tms->inppri, tms->monpri)) |
| 137 |
|
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 |
|
} |
| 141 |
|
for (i = 0; i < 3; i++) |
| 142 |
|
for (j = 0; j < 3; j++) |
| 143 |
|
tms->cmat[i][j] *= tms->inpsf; |
| 144 |
|
/* set color divisors */ |
| 145 |
|
for (i = 0; i < 3; i++) |
| 146 |
< |
if (tms->clf[i] > .001) |
| 147 |
< |
tms->cdiv[i] = |
| 140 |
< |
256.*pow(tms->clf[i], 1./tms->mongam); |
| 141 |
< |
else |
| 142 |
< |
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 |
|
for (i = tmNumPkgs; i--; ) |
| 150 |
|
if (tms->pd[i] != NULL && tmPkg[i]->NewSpace != NULL) |
| 154 |
|
|
| 155 |
|
|
| 156 |
|
void |
| 157 |
< |
tmClearHisto( /* clear current histogram */ |
| 157 |
> |
tmClearHisto( /* clear current histogram */ |
| 158 |
|
TMstruct *tms |
| 159 |
|
) |
| 160 |
|
{ |
| 165 |
|
} |
| 166 |
|
|
| 167 |
|
|
| 168 |
+ |
TMbright |
| 169 |
+ |
tmCvLuminance( /* convert a single luminance */ |
| 170 |
+ |
double lum |
| 171 |
+ |
) |
| 172 |
+ |
{ |
| 173 |
+ |
double d; |
| 174 |
+ |
|
| 175 |
+ |
#ifdef isfinite |
| 176 |
+ |
if (!isfinite(lum) || lum <= TM_NOLUM) |
| 177 |
+ |
#else |
| 178 |
+ |
if (lum <= TM_NOLUM) |
| 179 |
+ |
#endif |
| 180 |
+ |
return(TM_NOBRT); |
| 181 |
+ |
d = TM_BRTSCALE*log(lum); |
| 182 |
+ |
return((TMbright)(d + .5 - (d < 0.))); |
| 183 |
+ |
} |
| 184 |
+ |
|
| 185 |
+ |
|
| 186 |
|
int |
| 187 |
+ |
tmCvLums( /* convert luminances using lookup */ |
| 188 |
+ |
TMbright *ls, |
| 189 |
+ |
float *scan, |
| 190 |
+ |
int len |
| 191 |
+ |
) |
| 192 |
+ |
{ |
| 193 |
+ |
if (tmFloat2BrtLUT == NULL) { /* initialize lookup table */ |
| 194 |
+ |
int32 i; |
| 195 |
+ |
tmFloat2BrtLUT = (TMbright *)malloc(sizeof(TMbright)*0x10000); |
| 196 |
+ |
if (tmFloat2BrtLUT == NULL) |
| 197 |
+ |
return(TM_E_NOMEM); |
| 198 |
+ |
for (i = 0; i < 0x10000; i++) { |
| 199 |
+ |
int32 l = (i<<1 | 1) << 14; |
| 200 |
+ |
#ifndef isfinite |
| 201 |
+ |
if ((l & 0x7f800000) == 0x7f800000) |
| 202 |
+ |
tmFloat2BrtLUT[i] = TM_NOBRT; |
| 203 |
+ |
else |
| 204 |
+ |
#endif |
| 205 |
+ |
tmFloat2BrtLUT[i] = tmCvLuminance(*(float *)&l); |
| 206 |
+ |
} |
| 207 |
+ |
} |
| 208 |
+ |
if (len <= 0) |
| 209 |
+ |
return(TM_E_OK); |
| 210 |
+ |
if ((ls == NULL) | (scan == NULL)) |
| 211 |
+ |
return(TM_E_ILLEGAL); |
| 212 |
+ |
while (len--) { |
| 213 |
+ |
if (*scan <= TM_NOLUM) { |
| 214 |
+ |
*ls++ = TM_NOBRT; |
| 215 |
+ |
++scan; |
| 216 |
+ |
continue; |
| 217 |
+ |
} |
| 218 |
+ |
*ls++ = tmCvLumLUfp(scan++); |
| 219 |
+ |
} |
| 220 |
+ |
return(TM_E_OK); |
| 221 |
+ |
} |
| 222 |
+ |
|
| 223 |
+ |
|
| 224 |
+ |
int |
| 225 |
+ |
tmCvGrays( /* convert float gray values */ |
| 226 |
+ |
TMstruct *tms, |
| 227 |
+ |
TMbright *ls, |
| 228 |
+ |
float *scan, |
| 229 |
+ |
int len |
| 230 |
+ |
) |
| 231 |
+ |
{ |
| 232 |
+ |
static const char funcName[] = "tmCvGrays"; |
| 233 |
+ |
int i; |
| 234 |
+ |
|
| 235 |
+ |
if (tms == NULL) |
| 236 |
+ |
returnErr(TM_E_TMINVAL); |
| 237 |
+ |
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
| 238 |
+ |
returnErr(TM_E_ILLEGAL); |
| 239 |
+ |
if (tmFloat2BrtLUT == NULL) /* initialize */ |
| 240 |
+ |
tmCvLums(NULL, NULL, 0); |
| 241 |
+ |
for (i = len; i--; ) { |
| 242 |
+ |
float lum = tms->inpsf * scan[i]; |
| 243 |
+ |
if (lum <= TM_NOLUM) |
| 244 |
+ |
ls[i] = TM_NOBRT; |
| 245 |
+ |
else |
| 246 |
+ |
ls[i] = tmCvLumLUfp(&lum); |
| 247 |
+ |
} |
| 248 |
+ |
returnOK; |
| 249 |
+ |
} |
| 250 |
+ |
|
| 251 |
+ |
|
| 252 |
+ |
int |
| 253 |
|
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 |
|
static const char funcName[] = "tmCvColors"; |
| 262 |
< |
static COLOR csmall = {.5*MINLUM, .5*MINLUM, .5*MINLUM}; |
| 174 |
< |
static BYTE gamtab[1024]; |
| 262 |
> |
static uby8 gamtab[1024]; |
| 263 |
|
static double curgam = .0; |
| 264 |
|
COLOR cmon; |
| 265 |
< |
double lum, slum; |
| 178 |
< |
double d; |
| 265 |
> |
float lum, slum, d; |
| 266 |
|
int i; |
| 267 |
|
|
| 268 |
|
if (tms == NULL) |
| 269 |
|
returnErr(TM_E_TMINVAL); |
| 270 |
|
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
| 271 |
|
returnErr(TM_E_ILLEGAL); |
| 272 |
+ |
if (tmFloat2BrtLUT == NULL) /* initialize */ |
| 273 |
+ |
tmCvLums(NULL, NULL, 0); |
| 274 |
|
if (cs != TM_NOCHROM && fabs(tms->mongam - curgam) > .02) { |
| 275 |
|
curgam = tms->mongam; /* (re)build table */ |
| 276 |
|
for (i = 1024; i--; ) |
| 284 |
|
cmon[GRN] = tms->inpsf*scan[i][GRN]; |
| 285 |
|
cmon[BLU] = tms->inpsf*scan[i][BLU]; |
| 286 |
|
} |
| 287 |
< |
#ifdef isnan |
| 288 |
< |
if (isnan(cmon[RED]) || isinf(cmon[RED])) cmon[RED] = .0f; |
| 289 |
< |
if (isnan(cmon[GRN]) || isinf(cmon[GRN])) cmon[GRN] = .0f; |
| 290 |
< |
if (isnan(cmon[BLU]) || isinf(cmon[BLU])) cmon[BLU] = .0f; |
| 287 |
> |
#ifdef isfinite |
| 288 |
> |
if (!isfinite(cmon[RED]) || cmon[RED] < .0f) cmon[RED] = .0f; |
| 289 |
> |
if (!isfinite(cmon[GRN]) || cmon[GRN] < .0f) cmon[GRN] = .0f; |
| 290 |
> |
if (!isfinite(cmon[BLU]) || cmon[BLU] < .0f) cmon[BLU] = .0f; |
| 291 |
> |
#else |
| 292 |
> |
if (cmon[RED] < .0f) cmon[RED] = .0f; |
| 293 |
> |
if (cmon[GRN] < .0f) cmon[GRN] = .0f; |
| 294 |
> |
if (cmon[BLU] < .0f) cmon[BLU] = .0f; |
| 295 |
|
#endif |
| 296 |
|
/* world luminance */ |
| 297 |
|
lum = tms->clf[RED]*cmon[RED] + |
| 298 |
|
tms->clf[GRN]*cmon[GRN] + |
| 299 |
|
tms->clf[BLU]*cmon[BLU] ; |
| 300 |
< |
/* check range */ |
| 301 |
< |
if (clipgamut(cmon, lum, CGAMUT_LOWER, csmall, cwhite)) |
| 302 |
< |
lum = tms->clf[RED]*cmon[RED] + |
| 303 |
< |
tms->clf[GRN]*cmon[GRN] + |
| 304 |
< |
tms->clf[BLU]*cmon[BLU] ; |
| 212 |
< |
if (lum < MINLUM) { |
| 213 |
< |
ls[i] = MINBRT-1; /* bogus value */ |
| 214 |
< |
lum = MINLUM; |
| 215 |
< |
} else { |
| 216 |
< |
d = TM_BRTSCALE*log(lum); /* encode it */ |
| 217 |
< |
ls[i] = d>0. ? (int)(d+.5) : (int)(d-.5); |
| 218 |
< |
} |
| 300 |
> |
if (lum <= TM_NOLUM) { /* convert brightness */ |
| 301 |
> |
lum = cmon[RED] = cmon[GRN] = cmon[BLU] = TM_NOLUM; |
| 302 |
> |
ls[i] = TM_NOBRT; |
| 303 |
> |
} else |
| 304 |
> |
ls[i] = tmCvLumLUfp(&lum); |
| 305 |
|
if (cs == TM_NOCHROM) /* no color? */ |
| 306 |
|
continue; |
| 307 |
|
if (tms->flags & TM_F_MESOPIC && lum < LMESUPPER) { |
| 308 |
|
slum = scotlum(cmon); /* mesopic adj. */ |
| 309 |
< |
if (lum < LMESLOWER) |
| 309 |
> |
if (lum < LMESLOWER) { |
| 310 |
|
cmon[RED] = cmon[GRN] = cmon[BLU] = slum; |
| 311 |
< |
else { |
| 311 |
> |
} else { |
| 312 |
|
d = (lum - LMESLOWER)/(LMESUPPER - LMESLOWER); |
| 313 |
|
if (tms->flags & TM_F_BW) |
| 314 |
|
cmon[RED] = cmon[GRN] = |
| 315 |
|
cmon[BLU] = d*lum; |
| 316 |
|
else |
| 317 |
|
scalecolor(cmon, d); |
| 318 |
< |
d = (1.-d)*slum; |
| 318 |
> |
d = (1.f-d)*slum; |
| 319 |
|
cmon[RED] += d; |
| 320 |
|
cmon[GRN] += d; |
| 321 |
|
cmon[BLU] += d; |
| 324 |
|
cmon[RED] = cmon[GRN] = cmon[BLU] = lum; |
| 325 |
|
} |
| 326 |
|
d = tms->clf[RED]*cmon[RED]/lum; |
| 327 |
< |
cs[3*i ] = d>=.999 ? 255 : gamtab[(int)(1024.*d)]; |
| 327 |
> |
cs[3*i ] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
| 328 |
|
d = tms->clf[GRN]*cmon[GRN]/lum; |
| 329 |
< |
cs[3*i+1] = d>=.999 ? 255 : gamtab[(int)(1024.*d)]; |
| 329 |
> |
cs[3*i+1] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
| 330 |
|
d = tms->clf[BLU]*cmon[BLU]/lum; |
| 331 |
< |
cs[3*i+2] = d>=.999 ? 255 : gamtab[(int)(1024.*d)]; |
| 331 |
> |
cs[3*i+2] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
| 332 |
|
} |
| 333 |
|
returnOK; |
| 334 |
|
} |
| 335 |
|
|
| 336 |
|
|
| 251 |
– |
TMbright |
| 252 |
– |
tmCvLuminance( /* convert a single luminance */ |
| 253 |
– |
double lum |
| 254 |
– |
) |
| 255 |
– |
{ |
| 256 |
– |
double d; |
| 257 |
– |
|
| 258 |
– |
if (lum <= TM_NOLUM) |
| 259 |
– |
return(TM_NOBRT); |
| 260 |
– |
d = TM_BRTSCALE*log(lum); |
| 261 |
– |
if (d > 0.) |
| 262 |
– |
return((TMbright)(d+.5)); |
| 263 |
– |
return((TMbright)(d-.5)); |
| 264 |
– |
} |
| 265 |
– |
|
| 266 |
– |
|
| 337 |
|
int |
| 268 |
– |
tmCvGrays( /* convert float gray values */ |
| 269 |
– |
TMstruct *tms, |
| 270 |
– |
TMbright *ls, |
| 271 |
– |
float *scan, |
| 272 |
– |
int len |
| 273 |
– |
) |
| 274 |
– |
{ |
| 275 |
– |
static const char funcName[] = "tmCvGrays"; |
| 276 |
– |
double d; |
| 277 |
– |
int i; |
| 278 |
– |
|
| 279 |
– |
if (tms == NULL) |
| 280 |
– |
returnErr(TM_E_TMINVAL); |
| 281 |
– |
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
| 282 |
– |
returnErr(TM_E_ILLEGAL); |
| 283 |
– |
for (i = len; i--; ) |
| 284 |
– |
if (scan[i] <= TM_NOLUM) { |
| 285 |
– |
ls[i] = TM_NOBRT; /* bogus value */ |
| 286 |
– |
} else { |
| 287 |
– |
d = TM_BRTSCALE*log(scan[i]); /* encode it */ |
| 288 |
– |
ls[i] = d>0. ? (int)(d+.5) : (int)(d-.5); |
| 289 |
– |
} |
| 290 |
– |
returnOK; |
| 291 |
– |
} |
| 292 |
– |
|
| 293 |
– |
|
| 294 |
– |
int |
| 338 |
|
tmAddHisto( /* add values to histogram */ |
| 339 |
|
TMstruct *tms, |
| 340 |
|
TMbright *ls, |
| 361 |
|
tms->hbrmin = tms->hbrmax = ls[i]; |
| 362 |
|
oldlen = 0; |
| 363 |
|
} 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 |
|
for (i = len; i--; ) { |
| 368 |
|
if ((j = ls[i]) < MINBRT) |
| 372 |
|
else if (j > tms->hbrmax) |
| 373 |
|
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 |
|
returnErr(TM_E_NOMEM); |
| 381 |
|
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 |
|
free((MEM_PTR)tms->histo); |
| 385 |
|
} |
| 386 |
|
tms->histo = newhist; |
| 389 |
|
returnOK; |
| 390 |
|
for (i = len; i--; ) /* add in new counts */ |
| 391 |
|
if (ls[i] >= MINBRT) |
| 392 |
< |
tms->histo[ (ls[i]-MINBRT)/HISTEP - horig ] += wt; |
| 392 |
> |
tms->histo[ HISTI(ls[i]) - horig ] += wt; |
| 393 |
|
returnOK; |
| 394 |
|
} |
| 395 |
|
|
| 417 |
|
} |
| 418 |
|
|
| 419 |
|
|
| 377 |
– |
static int |
| 378 |
– |
tmNewMap( /* allocate new tone-mapping array */ |
| 379 |
– |
TMstruct *tms |
| 380 |
– |
) |
| 381 |
– |
{ |
| 382 |
– |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
| 383 |
– |
(tms->hbrmax - tms->hbrmin)) { |
| 384 |
– |
free((MEM_PTR)tms->lumap); |
| 385 |
– |
tms->lumap = NULL; |
| 386 |
– |
} |
| 387 |
– |
tms->mbrmin = tms->hbrmin; |
| 388 |
– |
tms->mbrmax = tms->hbrmax; |
| 389 |
– |
if (tms->mbrmin > tms->mbrmax) |
| 390 |
– |
return 0; |
| 391 |
– |
if (tms->lumap == NULL) |
| 392 |
– |
tms->lumap = (unsigned short *)malloc(sizeof(unsigned short)* |
| 393 |
– |
(tms->mbrmax-tms->mbrmin+1)); |
| 394 |
– |
return(tms->lumap != NULL); |
| 395 |
– |
} |
| 396 |
– |
|
| 397 |
– |
|
| 420 |
|
int |
| 421 |
|
tmFixedMapping( /* compute fixed, linear tone-mapping */ |
| 422 |
|
TMstruct *tms, |
| 435 |
|
if (gamval < MINGAM) |
| 436 |
|
gamval = tms->mongam; |
| 437 |
|
d = log(expmult/tms->inpsf); |
| 438 |
< |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) |
| 439 |
< |
tms->lumap[i] = 256. * exp( |
| 438 |
> |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
| 439 |
> |
double val = TM_BRES * exp( |
| 440 |
|
( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
| 441 |
< |
/ gamval ); |
| 441 |
> |
/ gamval); |
| 442 |
> |
tms->lumap[i] = val; |
| 443 |
> |
if (sizeof(TMAP_TYP) == 2 && val >= 0xffff) |
| 444 |
> |
tms->lumap[i] = 0xffff; |
| 445 |
> |
} |
| 446 |
|
returnOK; |
| 447 |
|
} |
| 448 |
|
|
| 456 |
|
) |
| 457 |
|
{ |
| 458 |
|
static const char funcName[] = "tmComputeMapping"; |
| 459 |
< |
int *histo; |
| 459 |
> |
HIST_TYP *histo; |
| 460 |
|
float *cumf; |
| 461 |
< |
int brt0, histlen, threshold, ceiling, trimmings; |
| 461 |
> |
int brt0, histlen; |
| 462 |
> |
HIST_TYP threshold, ceiling, trimmings, histot; |
| 463 |
|
double logLddyn, Ldmin, Ldavg, Lwavg, Tr, Lw, Ld; |
| 437 |
– |
int32 histot; |
| 464 |
|
double sum; |
| 465 |
|
double d; |
| 466 |
|
int i, j; |
| 475 |
|
Ldmin = Ldmax/Lddyn; |
| 476 |
|
logLddyn = log(Lddyn); |
| 477 |
|
Ldavg = sqrt(Ldmax*Ldmin); |
| 478 |
< |
i = (tms->hbrmin-MINBRT)/HISTEP; |
| 479 |
< |
brt0 = MINBRT + HISTEP/2 + i*HISTEP; |
| 480 |
< |
histlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - i; |
| 478 |
> |
i = HISTI(tms->hbrmin); |
| 479 |
> |
brt0 = HISTV(i); |
| 480 |
> |
histlen = HISTI(tms->hbrmax) + 1 - i; |
| 481 |
|
/* histogram total and mean */ |
| 482 |
|
histot = 0; sum = 0; |
| 483 |
|
j = brt0 + histlen*HISTEP; |
| 484 |
|
for (i = histlen; i--; ) { |
| 485 |
|
histot += tms->histo[i]; |
| 486 |
< |
sum += (j -= HISTEP) * tms->histo[i]; |
| 486 |
> |
sum += (double)(j -= HISTEP) * tms->histo[i]; |
| 487 |
|
} |
| 488 |
|
threshold = histot*0.005 + .5; |
| 489 |
< |
if (threshold < 4) |
| 489 |
> |
if (!histot) |
| 490 |
|
returnErr(TM_E_TMFAIL); |
| 491 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
| 466 |
– |
/* allocate space for mapping */ |
| 467 |
– |
if (!tmNewMap(tms)) |
| 468 |
– |
returnErr(TM_E_NOMEM); |
| 492 |
|
/* use linear tone mapping? */ |
| 493 |
< |
if (tms->flags & TM_F_LINEAR) |
| 493 |
> |
if (tms->flags & TM_F_LINEAR || threshold < 4 || |
| 494 |
> |
tms->hbrmax - tms->hbrmin < TM_BRTSCALE*logLddyn) |
| 495 |
|
goto linearmap; |
| 496 |
|
/* clamp histogram */ |
| 497 |
< |
histo = (int *)malloc(histlen*sizeof(int)); |
| 497 |
> |
histo = (HIST_TYP *)malloc(histlen*sizeof(HIST_TYP)); |
| 498 |
|
cumf = (float *)malloc((histlen+2)*sizeof(float)); |
| 499 |
|
if ((histo == NULL) | (cumf == NULL)) |
| 500 |
|
returnErr(TM_E_NOMEM); |
| 501 |
|
cumf[histlen+1] = 1.; /* guard for assignment code */ |
| 502 |
< |
for (i = histlen; i--; ) /* make malleable copy */ |
| 503 |
< |
histo[i] = tms->histo[i]; |
| 502 |
> |
/* make malleable copy */ |
| 503 |
> |
memcpy((MEM_PTR)histo, (MEM_PTR)tms->histo, histlen*sizeof(HIST_TYP)); |
| 504 |
|
do { /* iterate to solution */ |
| 505 |
|
sum = 0; /* cumulative probability */ |
| 506 |
|
for (i = 0; i < histlen; i++) { |
| 532 |
|
goto linearmap; |
| 533 |
|
} |
| 534 |
|
} while (trimmings > threshold); |
| 535 |
+ |
/* allocate space for mapping */ |
| 536 |
+ |
if (!tmNewMap(tms)) |
| 537 |
+ |
returnErr(TM_E_NOMEM); |
| 538 |
|
/* assign tone-mapping */ |
| 539 |
|
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
| 540 |
|
j = d = (double)i/(tms->mbrmax-tms->mbrmin)*histlen; |
| 541 |
|
d -= (double)j; |
| 542 |
|
Ld = Ldmin*exp(logLddyn*((1.-d)*cumf[j]+d*cumf[j+1])); |
| 543 |
|
d = (Ld - Ldmin)/(Ldmax - Ldmin); |
| 544 |
< |
tms->lumap[i] = 256.*pow(d, 1./gamval); |
| 544 |
> |
tms->lumap[i] = TM_BRES*pow(d, 1./gamval); |
| 545 |
|
} |
| 546 |
|
free((MEM_PTR)histo); /* clean up and return */ |
| 547 |
|
free((MEM_PTR)cumf); |
| 558 |
|
int |
| 559 |
|
tmMapPixels( /* apply tone-mapping to pixel(s) */ |
| 560 |
|
TMstruct *tms, |
| 561 |
< |
BYTE *ps, |
| 561 |
> |
uby8 *ps, |
| 562 |
|
TMbright *ls, |
| 563 |
< |
BYTE *cs, |
| 563 |
> |
uby8 *cs, |
| 564 |
|
int len |
| 565 |
|
) |
| 566 |
|
{ |
| 567 |
|
static const char funcName[] = "tmMapPixels"; |
| 568 |
< |
int32 li, pv; |
| 568 |
> |
TMbright lv; |
| 569 |
> |
TMAP_TYP li; |
| 570 |
> |
int pv; |
| 571 |
|
|
| 572 |
|
if (tms == NULL || tms->lumap == NULL) |
| 573 |
|
returnErr(TM_E_TMINVAL); |
| 574 |
|
if ((ps == NULL) | (ls == NULL) | (len < 0)) |
| 575 |
|
returnErr(TM_E_ILLEGAL); |
| 576 |
|
while (len--) { |
| 577 |
< |
if ((li = *ls++) < tms->mbrmin) { |
| 577 |
> |
if ((lv = *ls++) < tms->mbrmin) { |
| 578 |
|
li = 0; |
| 579 |
|
} else { |
| 580 |
< |
if (li > tms->mbrmax) |
| 581 |
< |
li = tms->mbrmax; |
| 582 |
< |
li = tms->lumap[li - tms->mbrmin]; |
| 580 |
> |
if (lv > tms->mbrmax) |
| 581 |
> |
lv = tms->mbrmax; |
| 582 |
> |
li = tms->lumap[lv - tms->mbrmin]; |
| 583 |
|
} |
| 584 |
< |
if (cs == TM_NOCHROM) |
| 585 |
< |
*ps++ = li>255 ? 255 : li; |
| 586 |
< |
else { |
| 584 |
> |
if (cs == TM_NOCHROM) { |
| 585 |
> |
#if !(TM_BRES & 0xff) |
| 586 |
> |
*ps++ = li>=TM_BRES ? 255 : li/(TM_BRES>>8); |
| 587 |
> |
#else |
| 588 |
> |
*ps++ = li>=TM_BRES ? 255 : (li<<8)/TM_BRES; |
| 589 |
> |
#endif |
| 590 |
> |
} else { |
| 591 |
|
pv = *cs++ * li / tms->cdiv[RED]; |
| 592 |
|
*ps++ = pv>255 ? 255 : pv; |
| 593 |
|
pv = *cs++ * li / tms->cdiv[GRN]; |
| 600 |
|
} |
| 601 |
|
|
| 602 |
|
|
| 570 |
– |
|
| 571 |
– |
|
| 603 |
|
TMstruct * |
| 604 |
< |
tmDup( /* duplicate top tone mapping */ |
| 604 |
> |
tmDup( /* duplicate tone mapping */ |
| 605 |
|
TMstruct *tms |
| 606 |
|
) |
| 607 |
|
{ |
| 616 |
|
return(NULL); |
| 617 |
|
*tmnew = *tms; /* copy everything */ |
| 618 |
|
if (tmnew->histo != NULL) { /* duplicate histogram */ |
| 619 |
< |
len = (tmnew->hbrmax-MINBRT)/HISTEP + 1 - |
| 620 |
< |
(tmnew->hbrmin-MINBRT)/HISTEP; |
| 590 |
< |
tmnew->histo = (int *)malloc(len*sizeof(int)); |
| 619 |
> |
len = HISTI(tmnew->hbrmax) + 1 - HISTI(tmnew->hbrmin); |
| 620 |
> |
tmnew->histo = (HIST_TYP *)malloc(len*sizeof(HIST_TYP)); |
| 621 |
|
if (tmnew->histo != NULL) |
| 622 |
< |
for (i = len; i--; ) |
| 623 |
< |
tmnew->histo[i] = tms->histo[i]; |
| 622 |
> |
memcpy((MEM_PTR)tmnew->histo, (MEM_PTR)tms->histo, |
| 623 |
> |
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( |
| 598 |
< |
len*sizeof(unsigned short) ); |
| 627 |
> |
tmnew->lumap = (TMAP_TYP *)malloc(len*sizeof(TMAP_TYP)); |
| 628 |
|
if (tmnew->lumap != NULL) |
| 629 |
< |
for (i = len; i--; ) |
| 630 |
< |
tmnew->lumap[i] = tms->lumap[i]; |
| 629 |
> |
memcpy((MEM_PTR)tmnew->lumap, (MEM_PTR)tms->lumap, |
| 630 |
> |
len*sizeof(TMAP_TYP)); |
| 631 |
|
} |
| 632 |
|
/* clear package data */ |
| 633 |
|
for (i = tmNumPkgs; i--; ) |
| 659 |
|
|
| 660 |
|
/******************** Shared but Private library routines *********************/ |
| 661 |
|
|
| 662 |
< |
BYTE tmMesofact[BMESUPPER-BMESLOWER]; |
| 662 |
> |
uby8 tmMesofact[BMESUPPER-BMESLOWER]; |
| 663 |
|
|
| 664 |
|
void |
| 665 |
|
tmMkMesofact() /* build mesopic lookup factor table */ |
| 673 |
|
tmMesofact[i-BMESLOWER] = 256. * |
| 674 |
|
(tmLuminance(i) - LMESLOWER) / |
| 675 |
|
(LMESUPPER - LMESLOWER); |
| 676 |
+ |
} |
| 677 |
+ |
|
| 678 |
+ |
|
| 679 |
+ |
int |
| 680 |
+ |
tmNewMap( /* allocate new tone-mapping array */ |
| 681 |
+ |
TMstruct *tms |
| 682 |
+ |
) |
| 683 |
+ |
{ |
| 684 |
+ |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
| 685 |
+ |
(tms->hbrmax - tms->hbrmin)) { |
| 686 |
+ |
free((MEM_PTR)tms->lumap); |
| 687 |
+ |
tms->lumap = NULL; |
| 688 |
+ |
} |
| 689 |
+ |
tms->mbrmin = tms->hbrmin; |
| 690 |
+ |
tms->mbrmax = tms->hbrmax; |
| 691 |
+ |
if (tms->mbrmin > tms->mbrmax) |
| 692 |
+ |
return 0; |
| 693 |
+ |
if (tms->lumap == NULL) |
| 694 |
+ |
tms->lumap = (TMAP_TYP *)malloc(sizeof(TMAP_TYP)* |
| 695 |
+ |
(tms->mbrmax-tms->mbrmin+1)); |
| 696 |
+ |
return(tms->lumap != NULL); |
| 697 |
|
} |
| 698 |
|
|
| 699 |
|
|