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 |
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#include "tmprivat.h" |
18 |
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#include "tmerrmsg.h" |
23 |
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struct tmPackage *tmPkg[TM_MAXPKG]; |
24 |
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int tmNumPkgs = 0; /* number of registered packages */ |
25 |
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|
26 |
+ |
/* luminance->brightness lookup */ |
27 |
+ |
static TMbright *tmFloat2BrtLUT = NULL; |
28 |
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|
29 |
+ |
#define tmCvLumLUfp(pf) tmFloat2BrtLUT[*(int32 *)(pf) >> 15] |
30 |
+ |
|
31 |
+ |
|
32 |
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TMstruct * |
33 |
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tmInit( /* initialize new tone mapping */ |
34 |
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int flags, |
54 |
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tmnew->clf[GRN] = rgb2xyzmat[1][1]; |
55 |
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tmnew->clf[BLU] = rgb2xyzmat[1][2]; |
56 |
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} else { |
57 |
< |
comprgb2xyzWBmat(cmat, tmnew->monpri=monpri); |
57 |
> |
comprgb2xyzmat(cmat, tmnew->monpri=monpri); |
58 |
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tmnew->clf[RED] = cmat[1][0]; |
59 |
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tmnew->clf[GRN] = cmat[1][1]; |
60 |
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tmnew->clf[BLU] = cmat[1][2]; |
117 |
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tms->clf[CIEX] = tms->clf[CIEZ] = 0.; |
118 |
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tms->clf[CIEY] = 1.; |
119 |
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} else { |
120 |
< |
comprgb2xyzWBmat(tms->cmat, tms->monpri); |
120 |
> |
comprgb2xyzmat(tms->cmat, tms->monpri); |
121 |
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tms->clf[RED] = tms->cmat[1][0]; |
122 |
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tms->clf[GRN] = tms->cmat[1][1]; |
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tms->clf[BLU] = tms->cmat[1][2]; |
155 |
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|
156 |
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|
157 |
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void |
158 |
< |
tmClearHisto( /* clear current histogram */ |
158 |
> |
tmClearHisto( /* clear current histogram */ |
159 |
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TMstruct *tms |
160 |
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) |
161 |
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{ |
166 |
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} |
167 |
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|
168 |
|
|
169 |
+ |
TMbright |
170 |
+ |
tmCvLuminance( /* convert a single luminance */ |
171 |
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double lum |
172 |
+ |
) |
173 |
+ |
{ |
174 |
+ |
double d; |
175 |
+ |
|
176 |
+ |
#ifdef isfinite |
177 |
+ |
if (!isfinite(lum) || lum <= TM_NOLUM) |
178 |
+ |
#else |
179 |
+ |
if (lum <= TM_NOLUM) |
180 |
+ |
#endif |
181 |
+ |
return(TM_NOBRT); |
182 |
+ |
d = TM_BRTSCALE*log(lum); |
183 |
+ |
if (d > 0.) |
184 |
+ |
return((TMbright)(d+.5)); |
185 |
+ |
return((TMbright)(d-.5)); |
186 |
+ |
} |
187 |
+ |
|
188 |
+ |
|
189 |
|
int |
190 |
+ |
tmCvLums( /* convert luminances using lookup */ |
191 |
+ |
TMbright *ls, |
192 |
+ |
float *scan, |
193 |
+ |
int len |
194 |
+ |
) |
195 |
+ |
{ |
196 |
+ |
if (tmFloat2BrtLUT == NULL) { /* initialize lookup table */ |
197 |
+ |
int32 i; |
198 |
+ |
tmFloat2BrtLUT = (TMbright *)malloc(sizeof(TMbright)*0x10000); |
199 |
+ |
if (tmFloat2BrtLUT == NULL) |
200 |
+ |
return(TM_E_NOMEM); |
201 |
+ |
for (i = 0; i < 0x10000; i++) { |
202 |
+ |
int32 l = (i<<1 | 1) << 14; |
203 |
+ |
#ifndef isfinite |
204 |
+ |
if ((l & 0x7f800000) == 0x7f800000) |
205 |
+ |
tmFloat2BrtLUT[i] = TM_NOBRT; |
206 |
+ |
else |
207 |
+ |
#endif |
208 |
+ |
tmFloat2BrtLUT[i] = tmCvLuminance(*(float *)&l); |
209 |
+ |
} |
210 |
+ |
} |
211 |
+ |
if (len <= 0) |
212 |
+ |
return(TM_E_OK); |
213 |
+ |
if ((ls == NULL) | (scan == NULL)) |
214 |
+ |
return(TM_E_ILLEGAL); |
215 |
+ |
while (len--) { |
216 |
+ |
if (*scan <= TM_NOLUM) { |
217 |
+ |
*ls++ = TM_NOBRT; |
218 |
+ |
++scan; |
219 |
+ |
continue; |
220 |
+ |
} |
221 |
+ |
*ls++ = tmCvLumLUfp(scan++); |
222 |
+ |
} |
223 |
+ |
return(TM_E_OK); |
224 |
+ |
} |
225 |
+ |
|
226 |
+ |
|
227 |
+ |
int |
228 |
+ |
tmCvGrays( /* convert float gray values */ |
229 |
+ |
TMstruct *tms, |
230 |
+ |
TMbright *ls, |
231 |
+ |
float *scan, |
232 |
+ |
int len |
233 |
+ |
) |
234 |
+ |
{ |
235 |
+ |
static const char funcName[] = "tmCvGrays"; |
236 |
+ |
int i; |
237 |
+ |
|
238 |
+ |
if (tms == NULL) |
239 |
+ |
returnErr(TM_E_TMINVAL); |
240 |
+ |
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
241 |
+ |
returnErr(TM_E_ILLEGAL); |
242 |
+ |
if (tmFloat2BrtLUT == NULL) /* initialize */ |
243 |
+ |
tmCvLums(NULL, NULL, 0); |
244 |
+ |
for (i = len; i--; ) { |
245 |
+ |
float lum = tms->inpsf * scan[i]; |
246 |
+ |
if (lum <= TM_NOLUM) |
247 |
+ |
ls[i] = TM_NOBRT; |
248 |
+ |
else |
249 |
+ |
ls[i] = tmCvLumLUfp(&lum); |
250 |
+ |
} |
251 |
+ |
returnOK; |
252 |
+ |
} |
253 |
+ |
|
254 |
+ |
|
255 |
+ |
int |
256 |
|
tmCvColors( /* convert float colors */ |
257 |
|
TMstruct *tms, |
258 |
|
TMbright *ls, |
262 |
|
) |
263 |
|
{ |
264 |
|
static const char funcName[] = "tmCvColors"; |
265 |
< |
static COLOR csmall = {.5*MINLUM, .5*MINLUM, .5*MINLUM}; |
265 |
> |
static BYTE gamtab[1024]; |
266 |
> |
static double curgam = .0; |
267 |
|
COLOR cmon; |
268 |
< |
double lum, slum; |
176 |
< |
double d; |
268 |
> |
float lum, slum, d; |
269 |
|
int i; |
270 |
|
|
271 |
|
if (tms == NULL) |
272 |
|
returnErr(TM_E_TMINVAL); |
273 |
|
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
274 |
|
returnErr(TM_E_ILLEGAL); |
275 |
+ |
if (tmFloat2BrtLUT == NULL) /* initialize */ |
276 |
+ |
tmCvLums(NULL, NULL, 0); |
277 |
+ |
if (cs != TM_NOCHROM && fabs(tms->mongam - curgam) > .02) { |
278 |
+ |
curgam = tms->mongam; /* (re)build table */ |
279 |
+ |
for (i = 1024; i--; ) |
280 |
+ |
gamtab[i] = (int)(256.*pow((i+.5)/1024., 1./curgam)); |
281 |
+ |
} |
282 |
|
for (i = len; i--; ) { |
283 |
|
if (tmNeedMatrix(tms)) { /* get monitor RGB */ |
284 |
|
colortrans(cmon, tms->cmat, scan[i]); |
287 |
|
cmon[GRN] = tms->inpsf*scan[i][GRN]; |
288 |
|
cmon[BLU] = tms->inpsf*scan[i][BLU]; |
289 |
|
} |
290 |
+ |
#ifdef isfinite |
291 |
+ |
if (!isfinite(cmon[RED]) || cmon[RED] < .0f) cmon[RED] = .0f; |
292 |
+ |
if (!isfinite(cmon[GRN]) || cmon[GRN] < .0f) cmon[GRN] = .0f; |
293 |
+ |
if (!isfinite(cmon[BLU]) || cmon[BLU] < .0f) cmon[BLU] = .0f; |
294 |
+ |
#else |
295 |
+ |
if (cmon[RED] < .0f) cmon[RED] = .0f; |
296 |
+ |
if (cmon[GRN] < .0f) cmon[GRN] = .0f; |
297 |
+ |
if (cmon[BLU] < .0f) cmon[BLU] = .0f; |
298 |
+ |
#endif |
299 |
|
/* world luminance */ |
300 |
|
lum = tms->clf[RED]*cmon[RED] + |
301 |
|
tms->clf[GRN]*cmon[GRN] + |
302 |
|
tms->clf[BLU]*cmon[BLU] ; |
303 |
< |
/* check range */ |
304 |
< |
if (clipgamut(cmon, lum, CGAMUT_LOWER, csmall, cwhite)) |
305 |
< |
lum = tms->clf[RED]*cmon[RED] + |
306 |
< |
tms->clf[GRN]*cmon[GRN] + |
307 |
< |
tms->clf[BLU]*cmon[BLU] ; |
200 |
< |
if (lum < MINLUM) { |
201 |
< |
ls[i] = MINBRT-1; /* bogus value */ |
202 |
< |
lum = MINLUM; |
203 |
< |
} else { |
204 |
< |
d = TM_BRTSCALE*log(lum); /* encode it */ |
205 |
< |
ls[i] = d>0. ? (int)(d+.5) : (int)(d-.5); |
206 |
< |
} |
303 |
> |
if (lum <= TM_NOLUM) { /* convert brightness */ |
304 |
> |
lum = cmon[RED] = cmon[GRN] = cmon[BLU] = TM_NOLUM; |
305 |
> |
ls[i] = TM_NOBRT; |
306 |
> |
} else |
307 |
> |
ls[i] = tmCvLumLUfp(&lum); |
308 |
|
if (cs == TM_NOCHROM) /* no color? */ |
309 |
|
continue; |
310 |
|
if (tms->flags & TM_F_MESOPIC && lum < LMESUPPER) { |
311 |
|
slum = scotlum(cmon); /* mesopic adj. */ |
312 |
< |
if (lum < LMESLOWER) |
312 |
> |
if (lum < LMESLOWER) { |
313 |
|
cmon[RED] = cmon[GRN] = cmon[BLU] = slum; |
314 |
< |
else { |
314 |
> |
} else { |
315 |
|
d = (lum - LMESLOWER)/(LMESUPPER - LMESLOWER); |
316 |
|
if (tms->flags & TM_F_BW) |
317 |
|
cmon[RED] = cmon[GRN] = |
318 |
|
cmon[BLU] = d*lum; |
319 |
|
else |
320 |
|
scalecolor(cmon, d); |
321 |
< |
d = (1.-d)*slum; |
321 |
> |
d = (1.f-d)*slum; |
322 |
|
cmon[RED] += d; |
323 |
|
cmon[GRN] += d; |
324 |
|
cmon[BLU] += d; |
327 |
|
cmon[RED] = cmon[GRN] = cmon[BLU] = lum; |
328 |
|
} |
329 |
|
d = tms->clf[RED]*cmon[RED]/lum; |
330 |
< |
cs[3*i ] = d>=.999 ? 255 : |
230 |
< |
(int)(256.*pow(d, 1./tms->mongam)); |
330 |
> |
cs[3*i ] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
331 |
|
d = tms->clf[GRN]*cmon[GRN]/lum; |
332 |
< |
cs[3*i+1] = d>=.999 ? 255 : |
233 |
< |
(int)(256.*pow(d, 1./tms->mongam)); |
332 |
> |
cs[3*i+1] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
333 |
|
d = tms->clf[BLU]*cmon[BLU]/lum; |
334 |
< |
cs[3*i+2] = d>=.999 ? 255 : |
236 |
< |
(int)(256.*pow(d, 1./tms->mongam)); |
334 |
> |
cs[3*i+2] = d>=.999f ? 255 : gamtab[(int)(1024.f*d)]; |
335 |
|
} |
336 |
|
returnOK; |
337 |
|
} |
338 |
|
|
339 |
|
|
242 |
– |
TMbright |
243 |
– |
tmCvLuminance( /* convert a single luminance */ |
244 |
– |
double lum |
245 |
– |
) |
246 |
– |
{ |
247 |
– |
double d; |
248 |
– |
|
249 |
– |
if (lum <= TM_NOLUM) |
250 |
– |
return(TM_NOBRT); |
251 |
– |
d = TM_BRTSCALE*log(lum); |
252 |
– |
if (d > 0.) |
253 |
– |
return((TMbright)(d+.5)); |
254 |
– |
return((TMbright)(d-.5)); |
255 |
– |
} |
256 |
– |
|
257 |
– |
|
340 |
|
int |
259 |
– |
tmCvGrays( /* convert float gray values */ |
260 |
– |
TMstruct *tms, |
261 |
– |
TMbright *ls, |
262 |
– |
float *scan, |
263 |
– |
int len |
264 |
– |
) |
265 |
– |
{ |
266 |
– |
static const char funcName[] = "tmCvGrays"; |
267 |
– |
double d; |
268 |
– |
int i; |
269 |
– |
|
270 |
– |
if (tms == NULL) |
271 |
– |
returnErr(TM_E_TMINVAL); |
272 |
– |
if ((ls == NULL) | (scan == NULL) | (len < 0)) |
273 |
– |
returnErr(TM_E_ILLEGAL); |
274 |
– |
for (i = len; i--; ) |
275 |
– |
if (scan[i] <= TM_NOLUM) { |
276 |
– |
ls[i] = TM_NOBRT; /* bogus value */ |
277 |
– |
} else { |
278 |
– |
d = TM_BRTSCALE*log(scan[i]); /* encode it */ |
279 |
– |
ls[i] = d>0. ? (int)(d+.5) : (int)(d-.5); |
280 |
– |
} |
281 |
– |
returnOK; |
282 |
– |
} |
283 |
– |
|
284 |
– |
|
285 |
– |
int |
341 |
|
tmAddHisto( /* add values to histogram */ |
342 |
|
TMstruct *tms, |
343 |
|
TMbright *ls, |
364 |
|
tms->hbrmin = tms->hbrmax = ls[i]; |
365 |
|
oldlen = 0; |
366 |
|
} else { |
367 |
< |
oldorig = (tms->hbrmin-MINBRT)/HISTEP; |
368 |
< |
oldlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - oldorig; |
367 |
> |
oldorig = HISTI(tms->hbrmin); |
368 |
> |
oldlen = HISTI(tms->hbrmax) + 1 - oldorig; |
369 |
|
} |
370 |
|
for (i = len; i--; ) { |
371 |
|
if ((j = ls[i]) < MINBRT) |
375 |
|
else if (j > tms->hbrmax) |
376 |
|
tms->hbrmax = j; |
377 |
|
} |
378 |
< |
horig = (tms->hbrmin-MINBRT)/HISTEP; |
379 |
< |
hlen = (tms->hbrmax-MINBRT)/HISTEP + 1 - horig; |
378 |
> |
horig = HISTI(tms->hbrmin); |
379 |
> |
hlen = HISTI(tms->hbrmax) + 1 - horig; |
380 |
|
if (hlen > oldlen) { /* (re)allocate histogram */ |
381 |
|
int *newhist = (int *)calloc(hlen, sizeof(int)); |
382 |
|
if (newhist == NULL) |
392 |
|
returnOK; |
393 |
|
for (i = len; i--; ) /* add in new counts */ |
394 |
|
if (ls[i] >= MINBRT) |
395 |
< |
tms->histo[ (ls[i]-MINBRT)/HISTEP - horig ] += wt; |
395 |
> |
tms->histo[ HISTI(ls[i]) - horig ] += wt; |
396 |
|
returnOK; |
397 |
|
} |
398 |
|
|
420 |
|
} |
421 |
|
|
422 |
|
|
368 |
– |
static int |
369 |
– |
tmNewMap( /* allocate new tone-mapping array */ |
370 |
– |
TMstruct *tms |
371 |
– |
) |
372 |
– |
{ |
373 |
– |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
374 |
– |
(tms->hbrmax - tms->hbrmin)) { |
375 |
– |
free((MEM_PTR)tms->lumap); |
376 |
– |
tms->lumap = NULL; |
377 |
– |
} |
378 |
– |
tms->mbrmin = tms->hbrmin; |
379 |
– |
tms->mbrmax = tms->hbrmax; |
380 |
– |
if (tms->mbrmin > tms->mbrmax) |
381 |
– |
return 0; |
382 |
– |
if (tms->lumap == NULL) |
383 |
– |
tms->lumap = (unsigned short *)malloc(sizeof(unsigned short)* |
384 |
– |
(tms->mbrmax-tms->mbrmin+1)); |
385 |
– |
return(tms->lumap != NULL); |
386 |
– |
} |
387 |
– |
|
388 |
– |
|
423 |
|
int |
424 |
|
tmFixedMapping( /* compute fixed, linear tone-mapping */ |
425 |
|
TMstruct *tms, |
438 |
|
if (gamval < MINGAM) |
439 |
|
gamval = tms->mongam; |
440 |
|
d = log(expmult/tms->inpsf); |
441 |
< |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) |
442 |
< |
tms->lumap[i] = 256. * exp( |
441 |
> |
for (i = tms->mbrmax-tms->mbrmin+1; i--; ) { |
442 |
> |
double val = 256. * exp( |
443 |
|
( d + (tms->mbrmin+i)*(1./TM_BRTSCALE) ) |
444 |
< |
/ gamval ); |
444 |
> |
/ gamval); |
445 |
> |
tms->lumap[i] = val >= (double)0xffff ? 0xffff : (int)val; |
446 |
> |
} |
447 |
|
returnOK; |
448 |
|
} |
449 |
|
|
476 |
|
Ldmin = Ldmax/Lddyn; |
477 |
|
logLddyn = log(Lddyn); |
478 |
|
Ldavg = sqrt(Ldmax*Ldmin); |
479 |
< |
i = (tms->hbrmin-MINBRT)/HISTEP; |
480 |
< |
brt0 = MINBRT + HISTEP/2 + i*HISTEP; |
481 |
< |
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) |
490 |
> |
if (!histot) |
491 |
|
returnErr(TM_E_TMFAIL); |
492 |
|
Lwavg = tmLuminance( (double)sum / histot ); |
457 |
– |
/* allocate space for mapping */ |
458 |
– |
if (!tmNewMap(tms)) |
459 |
– |
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)); |
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; |
595 |
|
} |
596 |
|
|
597 |
|
|
561 |
– |
|
562 |
– |
|
598 |
|
TMstruct * |
599 |
|
tmDup( /* duplicate top tone mapping */ |
600 |
|
TMstruct *tms |
611 |
|
return(NULL); |
612 |
|
*tmnew = *tms; /* copy everything */ |
613 |
|
if (tmnew->histo != NULL) { /* duplicate histogram */ |
614 |
< |
len = (tmnew->hbrmax-MINBRT)/HISTEP + 1 - |
580 |
< |
(tmnew->hbrmin-MINBRT)/HISTEP; |
614 |
> |
len = HISTI(tmnew->hbrmax) + 1 - HISTI(tmnew->hbrmin); |
615 |
|
tmnew->histo = (int *)malloc(len*sizeof(int)); |
616 |
|
if (tmnew->histo != NULL) |
617 |
|
for (i = len; i--; ) |
669 |
|
tmMesofact[i-BMESLOWER] = 256. * |
670 |
|
(tmLuminance(i) - LMESLOWER) / |
671 |
|
(LMESUPPER - LMESLOWER); |
672 |
+ |
} |
673 |
+ |
|
674 |
+ |
|
675 |
+ |
int |
676 |
+ |
tmNewMap( /* allocate new tone-mapping array */ |
677 |
+ |
TMstruct *tms |
678 |
+ |
) |
679 |
+ |
{ |
680 |
+ |
if (tms->lumap != NULL && (tms->mbrmax - tms->mbrmin) != |
681 |
+ |
(tms->hbrmax - tms->hbrmin)) { |
682 |
+ |
free((MEM_PTR)tms->lumap); |
683 |
+ |
tms->lumap = NULL; |
684 |
+ |
} |
685 |
+ |
tms->mbrmin = tms->hbrmin; |
686 |
+ |
tms->mbrmax = tms->hbrmax; |
687 |
+ |
if (tms->mbrmin > tms->mbrmax) |
688 |
+ |
return 0; |
689 |
+ |
if (tms->lumap == NULL) |
690 |
+ |
tms->lumap = (unsigned short *)malloc(sizeof(unsigned short)* |
691 |
+ |
(tms->mbrmax-tms->mbrmin+1)); |
692 |
+ |
return(tms->lumap != NULL); |
693 |
|
} |
694 |
|
|
695 |
|
|