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* Integer operations on COLR scanlines |
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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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> |
#include "copyright.h" |
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|
|
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+ |
#include <stdio.h> |
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#include <math.h> |
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+ |
|
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+ |
#include "rtmisc.h" |
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#include "color.h" |
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|
|
68 |
– |
#define NULL 0 |
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|
|
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– |
extern char *bmalloc(); |
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– |
|
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#define MAXGSHIFT 31 /* maximum shift for gamma table */ |
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|
|
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static BYTE *g_mant = NULL, *g_nexp = NULL; |
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static uby8 *g_mant = NULL, *g_nexp = NULL; |
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|
|
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static BYTE (*g_bval)[256] = NULL; |
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static uby8 (*g_bval)[256] = NULL; |
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|
|
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|
|
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|
int |
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setcolrcor(f, a2) /* set brightness correction */ |
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double (*f)(); |
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double a2; |
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> |
setcolrcor( /* set brightness correction */ |
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> |
double (*f)(double,double), |
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> |
double a2 |
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> |
) |
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|
{ |
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double mult; |
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register int i, j; |
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> |
int i, j; |
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/* allocate tables */ |
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if (g_bval == NULL && (g_bval = |
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(BYTE (*)[256])bmalloc((MAXGSHIFT+1)*256)) == NULL) |
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> |
(uby8 (*)[256])bmalloc((MAXGSHIFT+1)*256)) == NULL) |
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|
return(-1); |
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|
/* compute colr -> gamb mapping */ |
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|
mult = 1.0/256.0; |
45 |
|
|
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|
|
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|
int |
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< |
setcolrinv(f, a2) /* set inverse brightness correction */ |
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< |
double (*f)(); |
50 |
< |
double a2; |
48 |
> |
setcolrinv( /* set inverse brightness correction */ |
49 |
> |
double (*f)(double,double), |
50 |
> |
double a2 |
51 |
> |
) |
52 |
|
{ |
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|
double mult; |
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< |
register int i, j; |
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> |
int i, j; |
55 |
|
/* allocate tables */ |
56 |
< |
if (g_mant == NULL && (g_mant = (BYTE *)bmalloc(256)) == NULL) |
56 |
> |
if (g_mant == NULL && (g_mant = (uby8 *)bmalloc(256)) == NULL) |
57 |
|
return(-1); |
58 |
< |
if (g_nexp == NULL && (g_nexp = (BYTE *)bmalloc(256)) == NULL) |
58 |
> |
if (g_nexp == NULL && (g_nexp = (uby8 *)bmalloc(256)) == NULL) |
59 |
|
return(-1); |
60 |
|
/* compute gamb -> colr mapping */ |
61 |
|
i = 0; |
72 |
|
|
73 |
|
|
74 |
|
int |
75 |
< |
setcolrgam(g) /* set gamma conversion */ |
76 |
< |
double g; |
75 |
> |
setcolrgam( /* set gamma conversion */ |
76 |
> |
double g |
77 |
> |
) |
78 |
|
{ |
79 |
|
if (setcolrcor(pow, 1.0/g) < 0) |
80 |
|
return(-1); |
83 |
|
|
84 |
|
|
85 |
|
int |
86 |
< |
colrs_gambs(scan, len) /* convert scanline of colrs to gamma bytes */ |
87 |
< |
register COLR *scan; |
88 |
< |
int len; |
86 |
> |
colrs_gambs( /* convert scanline of colrs to gamma bytes */ |
87 |
> |
COLR *scan, |
88 |
> |
int len |
89 |
> |
) |
90 |
|
{ |
91 |
< |
register int i, expo; |
91 |
> |
int i, expo; |
92 |
|
|
93 |
|
if (g_bval == NULL) |
94 |
|
return(-1); |
134 |
|
|
135 |
|
|
136 |
|
int |
137 |
< |
gambs_colrs(scan, len) /* convert gamma bytes to colr scanline */ |
138 |
< |
register COLR *scan; |
139 |
< |
int len; |
137 |
> |
gambs_colrs( /* convert gamma bytes to colr scanline */ |
138 |
> |
COLR *scan, |
139 |
> |
int len |
140 |
> |
) |
141 |
|
{ |
142 |
< |
register int nexpo; |
142 |
> |
int nexpo; |
143 |
|
|
144 |
< |
if (g_mant == NULL | g_nexp == NULL) |
144 |
> |
if ((g_mant == NULL) | (g_nexp == NULL)) |
145 |
|
return(-1); |
146 |
|
while (len-- > 0) { |
147 |
|
nexpo = g_nexp[scan[0][RED]]; |
172 |
|
|
173 |
|
|
174 |
|
void |
175 |
< |
shiftcolrs(scan, len, adjust) /* shift a scanline of colors by 2^adjust */ |
176 |
< |
register COLR *scan; |
177 |
< |
register int len; |
178 |
< |
register int adjust; |
175 |
> |
shiftcolrs( /* shift a scanline of colors by 2^adjust */ |
176 |
> |
COLR *scan, |
177 |
> |
int len, |
178 |
> |
int adjust |
179 |
> |
) |
180 |
|
{ |
181 |
|
int minexp; |
182 |
|
|
195 |
|
|
196 |
|
|
197 |
|
void |
198 |
< |
normcolrs(scan, len, adjust) /* normalize a scanline of colrs */ |
199 |
< |
register COLR *scan; |
200 |
< |
int len; |
201 |
< |
int adjust; |
198 |
> |
normcolrs( /* normalize a scanline of colrs */ |
199 |
> |
COLR *scan, |
200 |
> |
int len, |
201 |
> |
int adjust |
202 |
> |
) |
203 |
|
{ |
204 |
< |
register int c; |
205 |
< |
register int shift; |
204 |
> |
int c; |
205 |
> |
int shift; |
206 |
|
|
207 |
|
while (len-- > 0) { |
208 |
|
shift = scan[0][EXP] + adjust - COLXS; |