/usr/include/ImageMagick-6/magick/pixel-accessor.h is in libmagickcore-6-headers 8:6.8.9.9-5+deb8u12.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | /*
Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License.
obtain a copy of the License at
http://www.imagemagick.org/script/license.php
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
MagickCore pixel accessor methods.
*/
#ifndef _MAGICKCORE_PIXEL_ACCESSOR_H
#define _MAGICKCORE_PIXEL_ACCESSOR_H
#include <math.h>
#include "magick/gem.h"
#include "magick/pixel.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#define ClampPixelRed(pixel) ClampToQuantum((pixel)->red)
#define ClampPixelGreen(pixel) ClampToQuantum((pixel)->green)
#define ClampPixelBlue(pixel) ClampToQuantum((pixel)->blue)
#define ClampPixelIndex(indexes) ClampToQuantum(*(indexes))
#define ClampPixelOpacity(pixel) ClampToQuantum((pixel)->opacity)
#define GetPixela(pixel) ((pixel)->green)
#define GetPixelb(pixel) ((pixel)->blue)
#define GetPixelAlpha(pixel) (QuantumRange-(pixel)->opacity)
#define GetPixelBlack(indexes) (*(indexes))
#define GetPixelBlue(pixel) ((pixel)->blue)
#define GetPixelCb(pixel) ((pixel)->green)
#define GetPixelCr(pixel) ((pixel)->blue)
#define GetPixelCyan(pixel) ((pixel)->red)
#define GetPixelGray(pixel) ((pixel)->red)
#define GetPixelGreen(pixel) ((pixel)->green)
#define GetPixelIndex(indexes) \
((indexes == (const IndexPacket *) NULL) ? 0 : (*(indexes)))
#define GetPixelL(pixel) ((pixel)->red)
#define GetPixelMagenta(pixel) ((pixel)->green)
#define GetPixelNext(pixel) ((pixel)+1)
#define GetPixelOpacity(pixel) ((pixel)->opacity)
#define GetPixelRed(pixel) ((pixel)->red)
#define GetPixelRGB(pixel,packet) \
{ \
(packet)->red=GetPixelRed((pixel)); \
(packet)->green=GetPixelGreen((pixel)); \
(packet)->blue=GetPixelBlue((pixel)); \
}
#define GetPixelRGBO(pixel,packet) \
{ \
(packet)->red=GetPixelRed((pixel)); \
(packet)->green=GetPixelGreen((pixel)); \
(packet)->blue=GetPixelBlue((pixel)); \
(packet)->opacity=GetPixelOpacity((pixel)); \
}
#define GetPixelY(pixel) ((pixel)->red)
#define GetPixelYellow(pixel) ((pixel)->blue)
#define SetPixela(pixel,value) ((pixel)->green=(Quantum) (value))
#define SetPixelAlpha(pixel,value) \
((pixel)->opacity=(Quantum) (QuantumRange-(value)))
#define SetPixelb(pixel,value) ((pixel)->blue=(Quantum) (value))
#define SetPixelBlack(indexes,value) (*(indexes)=(Quantum) (value))
#define SetPixelBlue(pixel,value) ((pixel)->blue=(Quantum) (value))
#define SetPixelCb(pixel,value) ((pixel)->green=(Quantum) (value))
#define SetPixelCr(pixel,value) ((pixel)->blue=(Quantum) (value))
#define SetPixelCyan(pixel,value) ((pixel)->red=(Quantum) (value))
#define SetPixelGray(pixel,value) \
((pixel)->red=(pixel)->green=(pixel)->blue=(Quantum) (value))
#define SetPixelGreen(pixel,value) ((pixel)->green=(Quantum) (value))
#define SetPixelIndex(indexes,value) \
{ \
if (indexes != (IndexPacket *) NULL) \
(*(indexes)=(IndexPacket) (value)); \
}
#define SetPixelL(pixel,value) ((pixel)->red=(Quantum) (value))
#define SetPixelMagenta(pixel,value) ((pixel)->green=(Quantum) (value))
#define SetPixelOpacity(pixel,value) \
((pixel)->opacity=(Quantum) (value))
#define SetPixelRed(pixel,value) ((pixel)->red=(Quantum) (value))
#define SetPixelRgb(pixel,packet) \
{ \
SetPixelRed(pixel,(packet)->red); \
SetPixelGreen(pixel,(packet)->green); \
SetPixelBlue(pixel,(packet)->blue); \
}
#define SetPixelRGBA(pixel,packet) \
{ \
SetPixelRed(pixel,(packet)->red); \
SetPixelGreen(pixel,(packet)->green); \
SetPixelBlue(pixel,(packet)->blue); \
SetPixelAlpha(pixel,(QuantumRange-(packet)->opacity)); \
}
#define SetPixelRGBO(pixel,packet) \
{ \
SetPixelRed(pixel,(packet)->red); \
SetPixelGreen(pixel,(packet)->green); \
SetPixelBlue(pixel,(packet)->blue); \
SetPixelOpacity(pixel,(packet)->opacity); \
}
#define SetPixelYellow(pixel,value) ((pixel)->blue=(Quantum) (value))
#define SetPixelY(pixel,value) ((pixel)->red=(Quantum) (value))
static inline MagickRealType AbsolutePixelValue(const MagickRealType x)
{
return(x < 0.0f ? -x : x);
}
static inline MagickRealType GetPixelLuma(const Image *restrict image,
const PixelPacket *restrict pixel)
{
if (image->colorspace == GRAYColorspace)
return((MagickRealType) pixel->red);
return(0.212656f*pixel->red+0.715158f*pixel->green+0.072186f*pixel->blue);
}
static inline MagickRealType GetPixelLuminance(const Image *restrict image,
const PixelPacket *restrict pixel)
{
MagickRealType
blue,
green,
red;
if (image->colorspace == GRAYColorspace)
return((MagickRealType) pixel->red);
if (image->colorspace != sRGBColorspace)
return(0.212656f*pixel->red+0.715158f*pixel->green+0.072186f*pixel->blue);
red=DecodePixelGamma((MagickRealType) pixel->red);
green=DecodePixelGamma((MagickRealType) pixel->green);
blue=DecodePixelGamma((MagickRealType) pixel->blue);
return(0.212656f*red+0.715158f*green+0.072186f*blue);
}
static inline MagickBooleanType IsPixelAtDepth(const Quantum pixel,
const QuantumAny range)
{
Quantum
quantum;
#if !defined(MAGICKCORE_HDRI_SUPPORT)
quantum=(Quantum) (((MagickRealType) QuantumRange*((QuantumAny)
(((MagickRealType) range*pixel)/QuantumRange+0.5)))/range+0.5);
#else
quantum=(Quantum) (((MagickRealType) QuantumRange*((QuantumAny)
(((MagickRealType) range*pixel)/QuantumRange+0.5)))/range);
#endif
return(pixel == quantum ? MagickTrue : MagickFalse);
}
static inline MagickBooleanType IsPixelGray(const PixelPacket *pixel)
{
MagickRealType
blue,
green,
red;
red=(MagickRealType) pixel->red;
green=(MagickRealType) pixel->green;
blue=(MagickRealType) pixel->blue;
if ((AbsolutePixelValue(red-green) < MagickEpsilon) &&
(AbsolutePixelValue(green-blue) < MagickEpsilon))
return(MagickTrue);
return(MagickFalse);
}
static inline Quantum PixelPacketIntensity(const PixelPacket *pixel)
{
MagickRealType
intensity;
if ((pixel->red == pixel->green) && (pixel->green == pixel->blue))
return(pixel->red);
intensity=(MagickRealType) (0.212656*pixel->red+0.715158*pixel->green+
0.072186*pixel->blue);
return(ClampToQuantum(intensity));
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
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