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/* RCSid: $Id$ */ |
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/* |
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* Private header file for tone mapping routines. |
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*/ |
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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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#ifndef MEM_PTR |
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#define MEM_PTR void * |
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#endif |
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#include "color.h" |
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#include "tonemap.h" |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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/* required constants */ |
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#ifndef M_LN2 |
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#define M_LN2 0.69314718055994530942 |
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#endif |
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#ifndef M_LN10 |
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#define M_LN10 2.30258509299404568402 |
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#endif |
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/* minimum values and defaults */ |
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#define MINGAM 0.75 |
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#define DEFGAM 2.2 |
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#define MINLDDYN 2. |
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#define DEFLDDYN 32. |
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#define MINLDMAX 1. |
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#define DEFLDMAX 100. |
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|
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#define BRT2SCALE(l2) (int)(M_LN2*TM_BRTSCALE*(l2) + ((l2)>0 ? .5 : -.5)) |
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|
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#define HISTEP 8 /* steps in BRTSCALE for each bin */ |
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|
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#define MINBRT (-16*TM_BRTSCALE) /* minimum usable brightness */ |
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#define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */ |
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|
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#define LMESLOWER (5.62e-3) /* lower mesopic limit */ |
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#define LMESUPPER (5.62) /* upper mesopic limit */ |
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#if (TM_BRTSCALE==128) |
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#define BMESLOWER (-663) /* encoded LMESLOWER */ |
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#define BMESUPPER (221) /* encoded LMESUPPER */ |
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#else |
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#define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5)) |
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#define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5)) |
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#endif |
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|
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#ifndef int4 |
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#define int4 int /* assume 32-bit integers */ |
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#endif |
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/* approximate scotopic lum. */ |
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#define SCO_rf 0.062 |
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#define SCO_gf 0.608 |
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#define SCO_bf 0.330 |
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#define scotlum(c) (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU]) |
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#define normscot(c) ( ( (int4)(SCO_rf*256.+.5)*(c)[RED] + \ |
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(int4)(SCO_gf*256.+.5)*(c)[GRN] + \ |
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(int4)(SCO_bf*256.+.5)*(c)[BLU] ) >> 8 ) |
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|
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#ifndef malloc |
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MEM_PTR malloc(); |
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MEM_PTR calloc(); |
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#endif |
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extern int tmErrorReturn(); |
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|
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/* lookup for mesopic scaling */ |
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extern BYTE tmMesofact[BMESUPPER-BMESLOWER]; |
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|
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extern void tmMkMesofact(); /* build tmMesofact */ |
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|
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#define returnErr(code) return(tmErrorReturn(funcName,code)) |
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#define returnOK return(TM_E_OK) |
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|
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#define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5) |
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|
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#define PRIMEQ(p1,p2) (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][1])\ |
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&&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][1])\ |
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&&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][1])\ |
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&&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][1])) |
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|
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#ifdef __cplusplus |
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} |
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#endif |
