MagickCore 6.9.11-60
Convert, Edit, Or Compose Bitmap Images
colorspace-private.h
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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 colorspace private methods.
17*/
18#ifndef MAGICKCORE_COLORSPACE_PRIVATE_H
19#define MAGICKCORE_COLORSPACE_PRIVATE_H
20
21#include "magick/image.h"
23#include "magick/pixel.h"
25
26#if defined(__cplusplus) || defined(c_plusplus)
27extern "C" {
28#endif
29
30static inline void ConvertCMYKToRGB(MagickPixelPacket *pixel)
31{
33 pixel->index)+pixel->index)));
35 pixel->index)+pixel->index)));
37 pixel->index)+pixel->index)));
38}
39
40static inline void ConvertRGBToCMYK(MagickPixelPacket *pixel)
41{
43 black,
44 blue,
45 cyan,
46 green,
47 magenta,
48 red,
49 yellow;
50
51 if (pixel->colorspace != sRGBColorspace)
52 {
53 red=QuantumScale*pixel->red;
54 green=QuantumScale*pixel->green;
55 blue=QuantumScale*pixel->blue;
56 }
57 else
58 {
62 }
63 if ((fabs((double) red) < MagickEpsilon) &&
64 (fabs((double) green) < MagickEpsilon) &&
65 (fabs((double) blue) < MagickEpsilon))
66 {
68 return;
69 }
70 cyan=(MagickRealType) (1.0-red);
71 magenta=(MagickRealType) (1.0-green);
72 yellow=(MagickRealType) (1.0-blue);
73 black=cyan;
74 if (magenta < black)
75 black=magenta;
76 if (yellow < black)
77 black=yellow;
78 cyan=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(cyan-black));
79 magenta=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(magenta-black));
80 yellow=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(yellow-black));
82 pixel->red=QuantumRange*cyan;
83 pixel->green=QuantumRange*magenta;
84 pixel->blue=QuantumRange*yellow;
85 pixel->index=QuantumRange*black;
86}
87
89 const ColorspaceType colorspace)
90{
91 if (colorspace == CMYKColorspace)
92 return(MagickTrue);
93 return(MagickFalse);
94}
95
97 const ColorspaceType colorspace)
98{
99 if ((colorspace == LinearGRAYColorspace) || (colorspace == GRAYColorspace) ||
100 (colorspace == Rec601LumaColorspace) ||
101 (colorspace == Rec709LumaColorspace))
102 return(MagickTrue);
103 return(MagickFalse);
104}
105
107 const ColorspaceType colorspace)
108{
109 if ((colorspace == HCLColorspace) || (colorspace == HCLpColorspace) ||
110 (colorspace == HSBColorspace) || (colorspace == HSIColorspace) ||
111 (colorspace == HSLColorspace) || (colorspace == HSVColorspace))
112 return(MagickTrue);
113 return(MagickFalse);
114}
115
116static inline MagickBooleanType IsRGBColorspace(const ColorspaceType colorspace)
117{
118 if ((colorspace == RGBColorspace) || (colorspace == scRGBColorspace) ||
119 (colorspace == LinearGRAYColorspace))
120 return(MagickTrue);
121 return(MagickFalse);
122}
123
125 const ColorspaceType colorspace)
126{
127 if ((colorspace == sRGBColorspace) || (colorspace == TransparentColorspace))
128 return(MagickTrue);
129 return(MagickFalse);
130}
131
133 const ColorspaceType colorspace)
134{
135 if ((colorspace == sRGBColorspace) || (colorspace == RGBColorspace) ||
136 (colorspace == scRGBColorspace) ||
137 (colorspace == TransparentColorspace) || (colorspace == GRAYColorspace) ||
138 (colorspace == LinearGRAYColorspace))
139 return(MagickTrue);
140 return(MagickFalse);
141}
142
144 const ColorspaceType colorspace)
145{
146 if ((colorspace == YCbCrColorspace) ||
147 (colorspace == Rec709YCbCrColorspace) ||
148 (colorspace == Rec601YCbCrColorspace))
149 return(MagickTrue);
150 return(MagickFalse);
151}
152
153#if defined(__cplusplus) || defined(c_plusplus)
154}
155#endif
156
157#endif
static MagickBooleanType IssRGBColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:124
static MagickBooleanType IsGrayColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:96
static MagickBooleanType IsHueCompatibleColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:106
static MagickBooleanType IsYCbCrCompatibleColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:143
static MagickBooleanType IsCMYKColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:88
static void ConvertRGBToCMYK(MagickPixelPacket *pixel)
Definition: colorspace-private.h:40
static void ConvertCMYKToRGB(MagickPixelPacket *pixel)
Definition: colorspace-private.h:30
static MagickBooleanType IssRGBCompatibleColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:132
static MagickBooleanType IsRGBColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:116
ColorspaceType
Definition: colorspace.h:26
@ Rec601LumaColorspace
Definition: colorspace.h:44
@ Rec601YCbCrColorspace
Definition: colorspace.h:45
@ HSLColorspace
Definition: colorspace.h:42
@ YCbCrColorspace
Definition: colorspace.h:34
@ scRGBColorspace
Definition: colorspace.h:56
@ HSIColorspace
Definition: colorspace.h:57
@ HSBColorspace
Definition: colorspace.h:41
@ HCLColorspace
Definition: colorspace.h:51
@ HCLpColorspace
Definition: colorspace.h:59
@ RGBColorspace
Definition: colorspace.h:28
@ CMYKColorspace
Definition: colorspace.h:39
@ Rec709LumaColorspace
Definition: colorspace.h:46
@ Rec709YCbCrColorspace
Definition: colorspace.h:47
@ GRAYColorspace
Definition: colorspace.h:29
@ HSVColorspace
Definition: colorspace.h:58
@ TransparentColorspace
Definition: colorspace.h:30
@ sRGBColorspace
Definition: colorspace.h:40
@ LinearGRAYColorspace
Definition: colorspace.h:62
MagickDoubleType MagickRealType
Definition: magick-type.h:129
#define QuantumRange
Definition: magick-type.h:90
#define MagickEpsilon
Definition: magick-type.h:119
MagickBooleanType
Definition: magick-type.h:203
@ MagickFalse
Definition: magick-type.h:204
@ MagickTrue
Definition: magick-type.h:205
#define QuantumScale
Definition: magick-type.h:124
static double PerceptibleReciprocal(const double x)
Definition: pixel-accessor.h:124
MagickExport MagickRealType DecodePixelGamma(const MagickRealType pixel)
Definition: pixel.c:246
Definition: pixel.h:105
ColorspaceType colorspace
Definition: pixel.h:110
MagickRealType blue
Definition: pixel.h:124
MagickRealType index
Definition: pixel.h:126
MagickRealType green
Definition: pixel.h:123
MagickRealType red
Definition: pixel.h:122