| 5 |
|
* Integer operations on COLR scanlines |
| 6 |
|
*/ |
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|
|
| 8 |
< |
/* ==================================================================== |
| 9 |
< |
* The Radiance Software License, Version 1.0 |
| 10 |
< |
* |
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< |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
| 12 |
< |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
| 13 |
< |
* |
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< |
* Redistribution and use in source and binary forms, with or without |
| 15 |
< |
* modification, are permitted provided that the following conditions |
| 16 |
< |
* are met: |
| 17 |
< |
* |
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< |
* 1. Redistributions of source code must retain the above copyright |
| 19 |
< |
* notice, this list of conditions and the following disclaimer. |
| 20 |
< |
* |
| 21 |
< |
* 2. Redistributions in binary form must reproduce the above copyright |
| 22 |
< |
* notice, this list of conditions and the following disclaimer in |
| 23 |
< |
* the documentation and/or other materials provided with the |
| 24 |
< |
* distribution. |
| 25 |
< |
* |
| 26 |
< |
* 3. The end-user documentation included with the redistribution, |
| 27 |
< |
* if any, must include the following acknowledgment: |
| 28 |
< |
* "This product includes Radiance software |
| 29 |
< |
* (http://radsite.lbl.gov/) |
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< |
* developed by the Lawrence Berkeley National Laboratory |
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< |
* (http://www.lbl.gov/)." |
| 32 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 33 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 34 |
< |
* |
| 35 |
< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 36 |
< |
* and "The Regents of the University of California" must |
| 37 |
< |
* not be used to endorse or promote products derived from this |
| 38 |
< |
* software without prior written permission. For written |
| 39 |
< |
* permission, please contact [email protected]. |
| 40 |
< |
* |
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< |
* 5. Products derived from this software may not be called "Radiance", |
| 42 |
< |
* nor may "Radiance" appear in their name, without prior written |
| 43 |
< |
* permission of Lawrence Berkeley National Laboratory. |
| 44 |
< |
* |
| 45 |
< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 46 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 47 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 48 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 49 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 50 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 51 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 52 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 53 |
< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 54 |
< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 55 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 56 |
< |
* SUCH DAMAGE. |
| 57 |
< |
* ==================================================================== |
| 58 |
< |
* |
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< |
* This software consists of voluntary contributions made by many |
| 60 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 61 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 62 |
< |
* <http://www.lbl.gov/>. |
| 63 |
< |
*/ |
| 8 |
> |
#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 |
| 16 |
|
|
| 70 |
– |
extern char *bmalloc(); |
| 71 |
– |
|
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|
#define MAXGSHIFT 31 /* maximum shift for gamma table */ |
| 18 |
|
|
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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; |
| 25 |
> |
setcolrcor( /* set brightness correction */ |
| 26 |
> |
double (*f)(double,double), |
| 27 |
> |
double a2 |
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> |
) |
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|
{ |
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|
double mult; |
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< |
register int i, j; |
| 31 |
> |
int i, j; |
| 32 |
|
/* allocate tables */ |
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|
if (g_bval == NULL && (g_bval = |
| 34 |
< |
(BYTE (*)[256])bmalloc((MAXGSHIFT+1)*256)) == NULL) |
| 34 |
> |
(uby8 (*)[256])bmalloc((MAXGSHIFT+1)*256)) == NULL) |
| 35 |
|
return(-1); |
| 36 |
|
/* compute colr -> gamb mapping */ |
| 37 |
|
mult = 1.0/256.0; |
| 45 |
|
|
| 46 |
|
|
| 47 |
|
int |
| 48 |
< |
setcolrinv(f, a2) /* set inverse brightness correction */ |
| 49 |
< |
double (*f)(); |
| 50 |
< |
double a2; |
| 48 |
> |
setcolrinv( /* set inverse brightness correction */ |
| 49 |
> |
double (*f)(double,double), |
| 50 |
> |
double a2 |
| 51 |
> |
) |
| 52 |
|
{ |
| 53 |
|
double mult; |
| 54 |
< |
register int i, j; |
| 54 |
> |
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; |
