1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id$"; |
3 |
#endif |
4 |
/* |
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* Routines for tone mapping on Radiance RGBE and XYZE pictures. |
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* |
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* Externals declared in tonemap.h |
8 |
*/ |
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|
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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#include <stdio.h> |
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#include <string.h> |
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#include <math.h> |
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#include <time.h> |
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#include "tmprivat.h" |
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#include "resolu.h" |
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|
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#ifndef TM_PIC_CTRANS |
75 |
#define TM_PIC_CTRANS 1 /* transform colors? (expensive) */ |
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#endif |
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|
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#define GAMTSZ 1024 |
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|
80 |
typedef struct { |
81 |
BYTE gamb[GAMTSZ]; /* gamma lookup table */ |
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COLR clfb; /* encoded tm->clf */ |
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TMbright inpsfb; /* encoded tm->inpsf */ |
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} COLRDATA; |
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|
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#ifdef NOPROTO |
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static MEM_PTR colrInit(); |
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static void colrNewSpace(); |
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#else |
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static MEM_PTR colrInit(struct tmStruct *); |
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static void colrNewSpace(struct tmStruct *); |
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#endif |
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static struct tmPackage colrPkg = { /* our package functions */ |
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colrInit, colrNewSpace, free |
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}; |
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static int colrReg = -1; /* our package registration number */ |
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|
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#define LOGISZ 260 |
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static TMbright logi[LOGISZ]; |
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|
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|
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int |
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tmCvColrs(ls, cs, scan, len) /* convert RGBE/XYZE colors */ |
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TMbright *ls; |
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BYTE *cs; |
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COLR *scan; |
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int len; |
108 |
{ |
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static char funcName[] = "tmCvColrs"; |
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COLR cmon; |
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register COLRDATA *cd; |
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register int i, bi, li; |
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|
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if (tmTop == NULL) |
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returnErr(TM_E_TMINVAL); |
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if (ls == NULL | scan == NULL | len < 0) |
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returnErr(TM_E_ILLEGAL); |
118 |
#if TM_PIC_CTRANS |
119 |
if (tmNeedMatrix(tmTop)) { /* need floating point */ |
120 |
#else |
121 |
if (tmTop->inppri == TM_XYZPRIM) { /* no way around this */ |
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#endif |
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register COLOR *newscan; |
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newscan = (COLOR *)tempbuffer(len*sizeof(COLOR)); |
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if (newscan == NULL) |
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returnErr(TM_E_NOMEM); |
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for (i = len; i--; ) |
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colr_color(newscan[i], scan[i]); |
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return(tmCvColors(ls, cs, newscan, len)); |
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} |
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if (colrReg < 0) { /* build tables if necessary */ |
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colrReg = tmRegPkg(&colrPkg); |
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if (colrReg < 0) |
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returnErr(TM_E_CODERR1); |
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for (i = 256; i--; ) |
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logi[i] = TM_BRTSCALE*log((i+.5)/256.) - .5; |
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for (i = 256; i < LOGISZ; i++) |
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logi[i] = 0; |
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tmMkMesofact(); |
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} |
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if ((cd = (COLRDATA *)tmPkgData(tmTop,colrReg)) == NULL) |
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returnErr(TM_E_NOMEM); |
143 |
for (i = len; i--; ) { |
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copycolr(cmon, scan[i]); |
145 |
/* world luminance */ |
146 |
li = ( cd->clfb[RED]*cmon[RED] + |
147 |
cd->clfb[GRN]*cmon[GRN] + |
148 |
cd->clfb[BLU]*cmon[BLU] ) >> 8; |
149 |
bi = BRT2SCALE(cmon[EXP]-COLXS) + |
150 |
logi[li] + cd->inpsfb; |
151 |
if (li <= 0) { |
152 |
bi = TM_NOBRT; /* bogus value */ |
153 |
li = 1; /* avoid li==0 */ |
154 |
} |
155 |
ls[i] = bi; |
156 |
if (cs == TM_NOCHROM) /* no color? */ |
157 |
continue; |
158 |
/* mesopic adj. */ |
159 |
if (tmTop->flags & TM_F_MESOPIC && bi < BMESUPPER) { |
160 |
register int pf, sli = normscot(cmon); |
161 |
if (bi < BMESLOWER) |
162 |
cmon[RED] = cmon[GRN] = cmon[BLU] = sli; |
163 |
else { |
164 |
if (tmTop->flags & TM_F_BW) |
165 |
cmon[RED] = cmon[GRN] = cmon[BLU] = li; |
166 |
pf = tmMesofact[bi-BMESLOWER]; |
167 |
sli *= 256 - pf; |
168 |
cmon[RED] = ( sli + pf*cmon[RED] ) >> 8; |
169 |
cmon[GRN] = ( sli + pf*cmon[GRN] ) >> 8; |
170 |
cmon[BLU] = ( sli + pf*cmon[BLU] ) >> 8; |
171 |
} |
172 |
} else if (tmTop->flags & TM_F_BW) { |
173 |
cmon[RED] = cmon[GRN] = cmon[BLU] = li; |
174 |
} |
175 |
bi = ( (int4)GAMTSZ*cd->clfb[RED]*cmon[RED]/li ) >> 8; |
176 |
cs[3*i ] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
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bi = ( (int4)GAMTSZ*cd->clfb[GRN]*cmon[GRN]/li ) >> 8; |
178 |
cs[3*i+1] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
179 |
bi = ( (int4)GAMTSZ*cd->clfb[BLU]*cmon[BLU]/li ) >> 8; |
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cs[3*i+2] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
181 |
} |
182 |
returnOK; |
183 |
} |
184 |
|
185 |
|
186 |
#define FMTRGB 1 /* Input is RGBE */ |
187 |
#define FMTCIE 2 /* Input is CIE XYZE */ |
188 |
#define FMTUNK 3 /* Input format is unspecified */ |
189 |
#define FMTBAD 4 /* Input is not a recognized format */ |
190 |
|
191 |
static struct radhead { |
192 |
int format; /* FMTRGB, FMTCIE, FMTUNK, FMTBAD */ |
193 |
double expos; /* input exposure value */ |
194 |
RGBPRIMP primp; /* input primaries */ |
195 |
RGBPRIMS mypri; /* custom primaries */ |
196 |
} rhdefault = {FMTUNK, 1., stdprims, STDPRIMS}; |
197 |
|
198 |
|
199 |
static int |
200 |
headline(s, rh) /* grok a header line */ |
201 |
register char *s; |
202 |
register struct radhead *rh; |
203 |
{ |
204 |
char fmt[32]; |
205 |
|
206 |
if (formatval(fmt, s)) { |
207 |
if (!strcmp(fmt, COLRFMT)) |
208 |
rh->format = FMTRGB; |
209 |
else if (!strcmp(fmt, CIEFMT)) |
210 |
rh->format = FMTCIE; |
211 |
else |
212 |
rh->format = FMTBAD; |
213 |
return(0); |
214 |
} |
215 |
if (isexpos(s)) { |
216 |
rh->expos *= exposval(s); |
217 |
return(0); |
218 |
} |
219 |
if (isprims(s)) { |
220 |
primsval(rh->mypri, s); |
221 |
rh->primp = rh->mypri; |
222 |
return(0); |
223 |
} |
224 |
return(0); |
225 |
} |
226 |
|
227 |
|
228 |
int |
229 |
tmLoadPicture(lpp, cpp, xp, yp, fname, fp) /* convert Radiance picture */ |
230 |
TMbright **lpp; |
231 |
BYTE **cpp; |
232 |
int *xp, *yp; |
233 |
char *fname; |
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FILE *fp; |
235 |
{ |
236 |
char *funcName = fname==NULL ? "tmLoadPicture" : fname; |
237 |
FILE *inpf; |
238 |
struct radhead info; |
239 |
int err; |
240 |
COLR *scanin = NULL; |
241 |
int i; |
242 |
/* check arguments */ |
243 |
if (tmTop == NULL) |
244 |
returnErr(TM_E_TMINVAL); |
245 |
if (lpp == NULL | xp == NULL | yp == NULL | |
246 |
(fname == NULL & fp == TM_GETFILE)) |
247 |
returnErr(TM_E_ILLEGAL); |
248 |
*xp = *yp = 0; /* error precaution */ |
249 |
if ((inpf = fp) == TM_GETFILE && (inpf = fopen(fname, "r")) == NULL) |
250 |
returnErr(TM_E_BADFILE); |
251 |
*lpp = NULL; |
252 |
if (cpp != TM_NOCHROMP) *cpp = NULL; |
253 |
info = rhdefault; /* get our header */ |
254 |
getheader(inpf, headline, (char *)&info); |
255 |
if (info.format == FMTBAD | info.expos <= 0. || |
256 |
fgetresolu(xp, yp, inpf) < 0) { |
257 |
err = TM_E_BADFILE; goto done; |
258 |
} |
259 |
if (info.format == FMTUNK) /* assume RGBE format */ |
260 |
info.format = FMTRGB; |
261 |
if (info.format == FMTRGB) |
262 |
info.expos /= WHTEFFICACY; |
263 |
else if (info.format == FMTCIE) |
264 |
info.primp = TM_XYZPRIM; |
265 |
/* prepare library */ |
266 |
if ((err = tmSetSpace(info.primp, 1./info.expos)) != TM_E_OK) |
267 |
goto done; |
268 |
err = TM_E_NOMEM; /* allocate arrays */ |
269 |
*lpp = (TMbright *)malloc(sizeof(TMbright) * *xp * *yp); |
270 |
if (*lpp == NULL) |
271 |
goto done; |
272 |
if (cpp != TM_NOCHROMP) { |
273 |
*cpp = (BYTE *)malloc(3*sizeof(BYTE) * *xp * *yp); |
274 |
if (*cpp == NULL) |
275 |
goto done; |
276 |
} |
277 |
scanin = (COLR *)malloc(sizeof(COLR) * *xp); |
278 |
if (scanin == NULL) |
279 |
goto done; |
280 |
err = TM_E_BADFILE; /* read & convert scanlines */ |
281 |
for (i = 0; i < *yp; i++) { |
282 |
if (freadcolrs(scanin, *xp, inpf) < 0) { |
283 |
err = TM_E_BADFILE; break; |
284 |
} |
285 |
err = tmCvColrs(*lpp + (i * *xp), |
286 |
cpp==TM_NOCHROMP ? TM_NOCHROM : *cpp + (i * 3 * *xp), |
287 |
scanin, *xp); |
288 |
if (err != TM_E_OK) |
289 |
break; |
290 |
} |
291 |
done: /* clean up */ |
292 |
if (fp == NULL) |
293 |
fclose(inpf); |
294 |
if (scanin != NULL) |
295 |
free((MEM_PTR)scanin); |
296 |
if (err != TM_E_OK) { |
297 |
if (*lpp != NULL) |
298 |
free((MEM_PTR)*lpp); |
299 |
if (cpp != TM_NOCHROMP && *cpp != NULL) |
300 |
free((MEM_PTR)*cpp); |
301 |
returnErr(err); |
302 |
} |
303 |
returnOK; |
304 |
} |
305 |
|
306 |
|
307 |
#ifdef PCOND |
308 |
int /* run pcond to map picture */ |
309 |
dopcond(psp, xp, yp, flags, monpri, gamval, Lddyn, Ldmax, fname) |
310 |
BYTE **psp; |
311 |
int *xp, *yp; |
312 |
int flags; |
313 |
RGBPRIMP monpri; |
314 |
double gamval, Lddyn, Ldmax; |
315 |
char *fname; |
316 |
{ |
317 |
char *funcName = fname; |
318 |
char cmdbuf[1024]; |
319 |
FILE *infp; |
320 |
register COLR *scan; |
321 |
register BYTE *rp; |
322 |
int y; |
323 |
register int x; |
324 |
/* set up gamma correction */ |
325 |
if (setcolrcor(pow, 1./gamval) < 0) |
326 |
returnErr(TM_E_NOMEM); |
327 |
/* create command */ |
328 |
strcpy(cmdbuf, PCOND); |
329 |
if (flags & TM_F_HCONTR) |
330 |
strcat(cmdbuf, " -s"); |
331 |
if (flags & TM_F_MESOPIC) |
332 |
strcat(cmdbuf, " -c"); |
333 |
if (flags & TM_F_LINEAR) |
334 |
strcat(cmdbuf, " -l"); |
335 |
if (flags & TM_F_ACUITY) |
336 |
strcat(cmdbuf, " -a"); |
337 |
if (flags & TM_F_VEIL) |
338 |
strcat(cmdbuf, " -v"); |
339 |
if (flags & TM_F_CWEIGHT) |
340 |
strcat(cmdbuf, " -w"); |
341 |
if (monpri != stdprims) |
342 |
sprintf(cmdbuf+strlen(cmdbuf), " -p %f %f %f %f %f %f %f %f", |
343 |
monpri[RED][CIEX], monpri[RED][CIEY], |
344 |
monpri[GRN][CIEX], monpri[GRN][CIEY], |
345 |
monpri[BLU][CIEX], monpri[BLU][CIEY], |
346 |
monpri[WHT][CIEX], monpri[WHT][CIEY]); |
347 |
sprintf(cmdbuf+strlen(cmdbuf), " -d %f -u %f %s", Lddyn, Ldmax, fname); |
348 |
/* start pcond */ |
349 |
if ((infp = popen(cmdbuf, "r")) == NULL) |
350 |
returnErr(TM_E_BADFILE); |
351 |
/* check picture format and size */ |
352 |
if (checkheader(infp, COLRFMT, NULL) < 0 || |
353 |
fgetresolu(xp, yp, infp) < 0) { |
354 |
pclose(infp); |
355 |
returnErr(TM_E_BADFILE); |
356 |
} |
357 |
/* allocate arrays */ |
358 |
scan = (COLR *)malloc(sizeof(COLR) * *xp); |
359 |
if (flags & TM_F_BW) |
360 |
rp = (BYTE *)malloc(sizeof(BYTE) * *xp * *yp); |
361 |
else |
362 |
rp = (BYTE *)malloc(3*sizeof(BYTE) * *xp * *yp); |
363 |
if ((*psp = rp) == NULL | scan == NULL) { |
364 |
pclose(infp); |
365 |
returnErr(TM_E_NOMEM); |
366 |
} |
367 |
/* read and gamma map file */ |
368 |
for (y = 0; y < *yp; y++) { |
369 |
if (freadcolrs(scan, *xp, infp) < 0) { |
370 |
pclose(infp); |
371 |
free((MEM_PTR)scan); |
372 |
free((MEM_PTR)*psp); |
373 |
*psp = NULL; |
374 |
returnErr(TM_E_BADFILE); |
375 |
} |
376 |
colrs_gambs(scan, *xp); |
377 |
if (flags & TM_F_BW) |
378 |
for (x = 0; x < *xp; x++) |
379 |
*rp++ = normbright(scan[x]); |
380 |
else |
381 |
for (x = 0; x < *xp; x++) { |
382 |
*rp++ = scan[x][RED]; |
383 |
*rp++ = scan[x][GRN]; |
384 |
*rp++ = scan[x][BLU]; |
385 |
} |
386 |
} |
387 |
free((MEM_PTR)scan); |
388 |
pclose(infp); |
389 |
returnOK; |
390 |
} |
391 |
#endif |
392 |
|
393 |
|
394 |
int /* map a Radiance picture */ |
395 |
tmMapPicture(psp, xp, yp, flags, monpri, gamval, Lddyn, Ldmax, fname, fp) |
396 |
BYTE **psp; |
397 |
int *xp, *yp; |
398 |
int flags; |
399 |
RGBPRIMP monpri; |
400 |
double gamval, Lddyn, Ldmax; |
401 |
char *fname; |
402 |
FILE *fp; |
403 |
{ |
404 |
char *funcName = fname==NULL ? "tmMapPicture" : fname; |
405 |
BYTE *cp; |
406 |
TMbright *lp; |
407 |
int err; |
408 |
/* check arguments */ |
409 |
if (psp == NULL | xp == NULL | yp == NULL | monpri == NULL | |
410 |
(fname == NULL & fp == TM_GETFILE)) |
411 |
returnErr(TM_E_ILLEGAL); |
412 |
/* set defaults */ |
413 |
if (gamval < MINGAM) gamval = DEFGAM; |
414 |
if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
415 |
if (Ldmax < MINLDMAX) Ldmax = DEFLDMAX; |
416 |
if (flags & TM_F_BW) monpri = stdprims; |
417 |
#ifdef PCOND |
418 |
/* check for pcond run */ |
419 |
if (fp == TM_GETFILE && flags & TM_F_UNIMPL) |
420 |
return( dopcond(psp, xp, yp, flags, |
421 |
monpri, gamval, Lddyn, Ldmax, fname) ); |
422 |
#endif |
423 |
/* initialize tone mapping */ |
424 |
if (tmInit(flags, monpri, gamval) == NULL) |
425 |
returnErr(TM_E_NOMEM); |
426 |
/* load & convert picture */ |
427 |
err = tmLoadPicture(&lp, (flags&TM_F_BW) ? TM_NOCHROMP : &cp, |
428 |
xp, yp, fname, fp); |
429 |
if (err != TM_E_OK) { |
430 |
tmDone(NULL); |
431 |
return(err); |
432 |
} |
433 |
/* allocate space for result */ |
434 |
if (flags & TM_F_BW) { |
435 |
*psp = (BYTE *)malloc(sizeof(BYTE) * *xp * *yp); |
436 |
if (*psp == NULL) { |
437 |
free((MEM_PTR)lp); |
438 |
tmDone(NULL); |
439 |
returnErr(TM_E_NOMEM); |
440 |
} |
441 |
cp = TM_NOCHROM; |
442 |
} else |
443 |
*psp = cp; |
444 |
/* compute color mapping */ |
445 |
err = tmAddHisto(lp, *xp * *yp, 1); |
446 |
if (err != TM_E_OK) |
447 |
goto done; |
448 |
err = tmComputeMapping(gamval, Lddyn, Ldmax); |
449 |
if (err != TM_E_OK) |
450 |
goto done; |
451 |
/* map colors */ |
452 |
err = tmMapPixels(*psp, lp, cp, *xp * *yp); |
453 |
|
454 |
done: /* clean up */ |
455 |
free((MEM_PTR)lp); |
456 |
tmDone(NULL); |
457 |
if (err != TM_E_OK) { /* free memory on error */ |
458 |
free((MEM_PTR)*psp); |
459 |
*psp = NULL; |
460 |
returnErr(err); |
461 |
} |
462 |
returnOK; |
463 |
} |
464 |
|
465 |
|
466 |
static void |
467 |
colrNewSpace(tms) /* color space changed for tone mapping */ |
468 |
register struct tmStruct *tms; |
469 |
{ |
470 |
register COLRDATA *cd; |
471 |
double d; |
472 |
|
473 |
cd = (COLRDATA *)tms->pd[colrReg]; |
474 |
cd->clfb[RED] = 256.*tms->clf[RED] + .5; |
475 |
cd->clfb[GRN] = 256.*tms->clf[GRN] + .5; |
476 |
cd->clfb[BLU] = 256.*tms->clf[BLU] + .5; |
477 |
cd->clfb[EXP] = COLXS; |
478 |
d = TM_BRTSCALE*log(tms->inpsf); |
479 |
cd->inpsfb = d<0. ? d-.5 : d+.5; |
480 |
} |
481 |
|
482 |
|
483 |
static MEM_PTR |
484 |
colrInit(tms) /* initialize private data for tone mapping */ |
485 |
register struct tmStruct *tms; |
486 |
{ |
487 |
register COLRDATA *cd; |
488 |
register int i; |
489 |
/* allocate our data */ |
490 |
cd = (COLRDATA *)malloc(sizeof(COLRDATA)); |
491 |
if (cd == NULL) |
492 |
return(NULL); |
493 |
tms->pd[colrReg] = (MEM_PTR)cd; |
494 |
/* compute gamma table */ |
495 |
for (i = GAMTSZ; i--; ) |
496 |
cd->gamb[i] = 256.*pow((i+.5)/GAMTSZ, 1./tms->mongam); |
497 |
/* compute color and scale factors */ |
498 |
colrNewSpace(tms); |
499 |
return((MEM_PTR)cd); |
500 |
} |