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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Routines for tone mapping on Radiance RGBE and XYZE pictures. |
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* See tonemap.h for detailed function descriptions. |
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* |
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* Externals declared in tonemap.h |
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*/ |
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#include "copyright.h" |
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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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#ifndef TM_PIC_CTRANS |
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#define TM_PIC_CTRANS 1 /* transform colors? (expensive) */ |
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#endif |
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|
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extern char *tempbuffer(); |
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#define GAMTSZ 1024 |
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typedef struct { |
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TMbright inpsfb; /* encoded tm->inpsf */ |
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} COLRDATA; |
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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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extern void free(); |
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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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#define LOGISZ 260 |
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static TMbright logi[LOGISZ]; |
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static BYTE photofact[BMESUPPER-BMESLOWER]; |
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int |
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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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if ((ls == NULL) | (scan == NULL) | (len < 0)) |
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returnErr(TM_E_ILLEGAL); |
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#if TM_PIC_CTRANS |
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if (tmNeedMatrix(tmTop)) { /* need floating point */ |
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#else |
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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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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] = logi[255]; |
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for (i = BMESLOWER; i < BMESUPPER; i++) |
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photofact[i-BMESLOWER] = 256. * |
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(tmLuminance(i) - LMESLOWER) / |
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(LMESUPPER - LMESLOWER); |
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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); |
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li = ( cd->clfb[RED]*cmon[RED] + |
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cd->clfb[GRN]*cmon[GRN] + |
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cd->clfb[BLU]*cmon[BLU] ) >> 8; |
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bi = BRT2SCALE*(cmon[EXP]-COLXS) + |
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bi = BRT2SCALE(cmon[EXP]-COLXS) + |
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logi[li] + cd->inpsfb; |
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if (bi < MINBRT) { |
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bi = MINBRT-1; /* bogus value */ |
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li++; /* avoid li==0 */ |
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if (li <= 0) { |
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bi = TM_NOBRT; /* bogus value */ |
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li = 1; /* avoid li==0 */ |
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} |
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ls[i] = bi; |
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if (cs == TM_NOCHROM) /* no color? */ |
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continue; |
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if (tmTop->flags & TM_F_BW) |
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cmon[RED] = cmon[GRN] = cmon[BLU] = li; |
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/* mesopic adj. */ |
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if (tmTop->flags & TM_F_MESOPIC && bi < BMESUPPER) { |
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register int pf, sli = normscot(cmon); |
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if (bi < BMESLOWER) |
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cmon[RED] = cmon[GRN] = cmon[BLU] = sli; |
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else { |
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pf = photofact[bi-BMESLOWER]; |
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if (tmTop->flags & TM_F_BW) |
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cmon[RED] = cmon[GRN] = cmon[BLU] = li; |
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pf = tmMesofact[bi-BMESLOWER]; |
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sli *= 256 - pf; |
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cmon[RED] = ( sli + pf*cmon[RED] ) >> 8; |
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cmon[GRN] = ( sli + pf*cmon[GRN] ) >> 8; |
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cmon[BLU] = ( sli + pf*cmon[BLU] ) >> 8; |
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} |
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} else if (tmTop->flags & TM_F_BW) { |
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cmon[RED] = cmon[GRN] = cmon[BLU] = li; |
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} |
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bi = ( (int4)GAMTSZ*cd->clfb[RED]*cmon[RED]/li ) >> 8; |
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bi = ( (int32)GAMTSZ*cd->clfb[RED]*cmon[RED]/li ) >> 8; |
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cs[3*i ] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
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bi = ( (int4)GAMTSZ*cd->clfb[GRN]*cmon[GRN]/li ) >> 8; |
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bi = ( (int32)GAMTSZ*cd->clfb[GRN]*cmon[GRN]/li ) >> 8; |
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cs[3*i+1] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
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bi = ( (int4)GAMTSZ*cd->clfb[BLU]*cmon[BLU]/li ) >> 8; |
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bi = ( (int32)GAMTSZ*cd->clfb[BLU]*cmon[BLU]/li ) >> 8; |
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cs[3*i+2] = bi>=GAMTSZ ? 255 : cd->gamb[bi]; |
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} |
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returnOK; |
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rh->format = FMTCIE; |
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else |
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rh->format = FMTBAD; |
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return; |
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return(0); |
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} |
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if (isexpos(s)) { |
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rh->expos *= exposval(s); |
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return; |
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return(0); |
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} |
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if (isprims(s)) { |
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primsval(rh->mypri, s); |
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rh->primp = rh->mypri; |
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return; |
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return(0); |
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} |
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return(0); |
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} |
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/* check arguments */ |
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if (tmTop == NULL) |
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returnErr(TM_E_TMINVAL); |
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if (lpp == NULL | xp == NULL | yp == NULL | |
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(fname == NULL & fp == TM_GETFILE)) |
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if ((lpp == NULL) | (xp == NULL) | (yp == NULL) | |
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((fname == NULL) & (fp == TM_GETFILE))) |
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returnErr(TM_E_ILLEGAL); |
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*xp = *yp = 0; /* error precaution */ |
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if ((inpf = fp) == TM_GETFILE && (inpf = fopen(fname, "r")) == NULL) |
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*lpp = NULL; |
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if (cpp != TM_NOCHROMP) *cpp = NULL; |
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info = rhdefault; /* get our header */ |
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getheader(inpf, headline, (MEM_PTR)&info); |
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if (info.format == FMTBAD | info.expos <= 0. || |
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getheader(inpf, headline, (char *)&info); |
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if ((info.format == FMTBAD) | (info.expos <= 0.) || |
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fgetresolu(xp, yp, inpf) < 0) { |
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err = TM_E_BADFILE; goto done; |
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} |
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} |
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int /* run pcond to map picture */ |
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#ifdef PCOND |
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static int /* run pcond to map picture */ |
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dopcond(psp, xp, yp, flags, monpri, gamval, Lddyn, Ldmax, fname) |
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BYTE **psp; |
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int *xp, *yp; |
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char *fname; |
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{ |
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char *funcName = fname; |
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char cmdbuf[512]; |
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char cmdbuf[1024]; |
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FILE *infp; |
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register COLR *scan; |
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register BYTE *rp; |
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if (setcolrcor(pow, 1./gamval) < 0) |
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returnErr(TM_E_NOMEM); |
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/* create command */ |
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strcpy(cmdbuf, "pcond "); |
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strcpy(cmdbuf, PCOND); |
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if (flags & TM_F_HCONTR) |
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strcat(cmdbuf, "-s "); |
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strcat(cmdbuf, " -s"); |
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if (flags & TM_F_MESOPIC) |
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strcat(cmdbuf, "-c "); |
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strcat(cmdbuf, " -c"); |
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if (flags & TM_F_LINEAR) |
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strcat(cmdbuf, "-l "); |
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strcat(cmdbuf, " -l"); |
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if (flags & TM_F_ACUITY) |
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strcat(cmdbuf, "-a "); |
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strcat(cmdbuf, " -a"); |
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if (flags & TM_F_VEIL) |
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strcat(cmdbuf, "-v "); |
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strcat(cmdbuf, " -v"); |
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if (flags & TM_F_CWEIGHT) |
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strcat(cmdbuf, "-w "); |
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sprintf(cmdbuf+strlen(cmdbuf), |
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"-p %f %f %f %f %f %f %f %f -d %f -u %f %s", |
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monpri[RED][CIEX], monpri[RED][CIEY], |
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monpri[GRN][CIEX], monpri[GRN][CIEY], |
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monpri[BLU][CIEX], monpri[BLU][CIEY], |
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monpri[WHT][CIEX], monpri[WHT][CIEY], |
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Lddyn, Ldmax, fname); |
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strcat(cmdbuf, " -w"); |
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if (monpri != stdprims) |
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sprintf(cmdbuf+strlen(cmdbuf), " -p %f %f %f %f %f %f %f %f", |
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monpri[RED][CIEX], monpri[RED][CIEY], |
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monpri[GRN][CIEX], monpri[GRN][CIEY], |
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monpri[BLU][CIEX], monpri[BLU][CIEY], |
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monpri[WHT][CIEX], monpri[WHT][CIEY]); |
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sprintf(cmdbuf+strlen(cmdbuf), " -d %f -u %f %s", Lddyn, Ldmax, fname); |
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/* start pcond */ |
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if ((infp = popen(cmdbuf, "r")) == NULL) |
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returnErr(TM_E_BADFILE); |
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rp = (BYTE *)malloc(sizeof(BYTE) * *xp * *yp); |
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else |
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rp = (BYTE *)malloc(3*sizeof(BYTE) * *xp * *yp); |
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if ((*psp = rp) == NULL | scan == NULL) { |
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> |
if (((*psp = rp) == NULL) | (scan == NULL)) { |
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pclose(infp); |
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returnErr(TM_E_NOMEM); |
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} |
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pclose(infp); |
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returnOK; |
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} |
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#endif |
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int /* map a Radiance picture */ |
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TMbright *lp; |
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int err; |
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/* check arguments */ |
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if (psp == NULL | xp == NULL | yp == NULL | monpri == NULL | |
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(fname == NULL & fp == TM_GETFILE)) |
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if ((psp == NULL) | (xp == NULL) | (yp == NULL) | (monpri == NULL) | |
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((fname == NULL) & (fp == TM_GETFILE))) |
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returnErr(TM_E_ILLEGAL); |
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/* set defaults */ |
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if (gamval < MINGAM) gamval = DEFGAM; |
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if (Lddyn < MINLDDYN) Lddyn = DEFLDDYN; |
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if (Ldmax < MINLDMAX) Ldmax = DEFLDMAX; |
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if (flags & TM_F_BW) monpri = stdprims; |
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#ifdef PCOND |
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/* check for pcond run */ |
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if (fp == TM_GETFILE && flags & TM_F_UNIMPL) |
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return( dopcond(psp, xp, yp, flags, |
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monpri, gamval, Lddyn, Ldmax, fname) ); |
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#endif |
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/* initialize tone mapping */ |
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if (tmInit(flags, monpri, gamval) == NULL) |
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returnErr(TM_E_NOMEM); |
