MagickCore 6.9.11-60
Convert, Edit, Or Compose Bitmap Images
pixel-private.h
Go to the documentation of this file.
1/*
2 Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization
3 dedicated to making software imaging solutions freely available.
4
5 You may not use this file except in compliance with the License. You may
6 obtain a copy of the License at
7
8 https://imagemagick.org/script/license.php
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15
16 MagickCore image pixel private methods.
17*/
18#ifndef MAGICKCORE_PIXEL_PRIVATE_H
19#define MAGICKCORE_PIXEL_PRIVATE_H
20
21#include "magick/image.h"
22#include "magick/color.h"
24#include "magick/memory_.h"
27
28#if defined(__cplusplus) || defined(c_plusplus)
29extern "C" {
30#endif
31
32static inline MagickBooleanType IsGrayPixel(const PixelPacket *pixel)
33{
34#if !defined(MAGICKCORE_HDRI_SUPPORT)
35 if ((GetPixelRed(pixel) == GetPixelGreen(pixel)) &&
36 (GetPixelGreen(pixel) == GetPixelBlue(pixel)))
37 return(MagickTrue);
38#else
39 {
40 double
41 alpha,
42 beta;
43
44 alpha=GetPixelRed(pixel)-(double) GetPixelGreen(pixel);
45 beta=GetPixelGreen(pixel)-(double) GetPixelBlue(pixel);
46 if ((fabs(alpha) <= MagickEpsilon) && (fabs(beta) <= MagickEpsilon))
47 return(MagickTrue);
48 }
49#endif
50 return(MagickFalse);
51}
52
54{
55#if !defined(MAGICKCORE_HDRI_SUPPORT)
56 if (((GetPixelRed(pixel) == 0) ||
57 (GetPixelRed(pixel) == QuantumRange)) &&
58 (GetPixelRed(pixel) == GetPixelGreen(pixel)) &&
59 (GetPixelGreen(pixel) == GetPixelBlue(pixel)))
60 return(MagickTrue);
61#else
62 {
63 double
64 alpha,
65 beta;
66
67 alpha=GetPixelRed(pixel)-(double) GetPixelGreen(pixel);
68 beta=GetPixelGreen(pixel)-(double) GetPixelBlue(pixel);
69 if (((fabs((double) GetPixelRed(pixel)) <= MagickEpsilon) ||
70 (fabs((double) GetPixelRed(pixel)-QuantumRange) <= MagickEpsilon)) &&
71 (fabs(alpha) <= MagickEpsilon) && (fabs(beta) <= MagickEpsilon))
72 return(MagickTrue);
73 }
74#endif
75 return(MagickFalse);
76}
77
78static inline void SetMagickPixelPacket(const Image *image,
79 const PixelPacket *color,const IndexPacket *index,MagickPixelPacket *pixel)
80{
81 pixel->red=(MagickRealType) GetPixelRed(color);
82 pixel->green=(MagickRealType) GetPixelGreen(color);
83 pixel->blue=(MagickRealType) GetPixelBlue(color);
85 if ((image->colorspace == CMYKColorspace) &&
86 (index != (const IndexPacket *) NULL))
87 pixel->index=(MagickRealType) GetPixelIndex(index);
88}
89
90static inline void SetMagickPixelPacketBias(const Image *image,
91 MagickPixelPacket *pixel)
92{
93 /*
94 Obsoleted by MorphologyApply().
95 */
96 pixel->red=image->bias;
97 pixel->green=image->bias;
98 pixel->blue=image->bias;
99 pixel->opacity=image->bias;
100 pixel->index=image->bias;
101}
102
103static inline void SetPixelPacket(const Image *image,
104 const MagickPixelPacket *pixel,PixelPacket *color,IndexPacket *index)
105{
106 SetPixelRed(color,ClampToQuantum(pixel->red));
107 SetPixelGreen(color,ClampToQuantum(pixel->green));
108 SetPixelBlue(color,ClampToQuantum(pixel->blue));
110 if ((image->colorspace == CMYKColorspace) ||
111 (image->storage_class == PseudoClass))
112 SetPixelIndex(index,ClampToQuantum(pixel->index));
113}
114
115#if defined(__cplusplus) || defined(c_plusplus)
116}
117#endif
118
119#endif
@ CMYKColorspace
Definition: colorspace.h:39
MagickDoubleType MagickRealType
Definition: magick-type.h:129
#define QuantumRange
Definition: magick-type.h:90
#define MagickEpsilon
Definition: magick-type.h:119
@ PseudoClass
Definition: magick-type.h:199
MagickBooleanType
Definition: magick-type.h:203
@ MagickFalse
Definition: magick-type.h:204
@ MagickTrue
Definition: magick-type.h:205
#define GetPixelBlue(pixel)
Definition: pixel-accessor.h:38
#define SetPixelRed(pixel, value)
Definition: pixel-accessor.h:82
#define SetPixelIndex(indexes, value)
Definition: pixel-accessor.h:78
#define SetPixelBlue(pixel, value)
Definition: pixel-accessor.h:71
#define GetPixelIndex(indexes)
Definition: pixel-accessor.h:44
#define GetPixelRed(pixel)
Definition: pixel-accessor.h:50
#define SetPixelOpacity(pixel, value)
Definition: pixel-accessor.h:81
#define SetPixelGreen(pixel, value)
Definition: pixel-accessor.h:77
#define GetPixelGreen(pixel)
Definition: pixel-accessor.h:43
#define GetPixelOpacity(pixel)
Definition: pixel-accessor.h:49
static MagickBooleanType IsMonochromePixel(const PixelPacket *pixel)
Definition: pixel-private.h:53
static void SetMagickPixelPacket(const Image *image, const PixelPacket *color, const IndexPacket *index, MagickPixelPacket *pixel)
Definition: pixel-private.h:78
static void SetMagickPixelPacketBias(const Image *image, MagickPixelPacket *pixel)
Definition: pixel-private.h:90
static void SetPixelPacket(const Image *image, const MagickPixelPacket *pixel, PixelPacket *color, IndexPacket *index)
Definition: pixel-private.h:103
static MagickBooleanType IsGrayPixel(const PixelPacket *pixel)
Definition: pixel-private.h:32
Quantum IndexPacket
Definition: pixel.h:129
static Quantum ClampToQuantum(const MagickRealType quantum)
Definition: quantum.h:88
Definition: image.h:153
ColorspaceType colorspace
Definition: image.h:158
ClassType storage_class
Definition: image.h:155
double bias
Definition: image.h:218
Definition: pixel.h:105
MagickRealType blue
Definition: pixel.h:124
MagickRealType index
Definition: pixel.h:126
MagickRealType opacity
Definition: pixel.h:125
MagickRealType green
Definition: pixel.h:123
MagickRealType red
Definition: pixel.h:122
Definition: pixel.h:132