blob: 8fd3b44c43af46576bd945279d5495d0993664e0 (
plain)
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
|
/*
Copyright 1999-2020 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. You may
obtain a copy of the License at
https://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 image colorspace private methods.
*/
#ifndef MAGICKCORE_COLORSPACE_PRIVATE_H
#define MAGICKCORE_COLORSPACE_PRIVATE_H
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/pixel.h"
#include "MagickCore/pixel-accessor.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
static inline void ConvertCMYKToRGB(PixelInfo *pixel)
{
pixel->red=((QuantumRange-(QuantumScale*pixel->red*(QuantumRange-
pixel->black)+pixel->black)));
pixel->green=((QuantumRange-(QuantumScale*pixel->green*(QuantumRange-
pixel->black)+pixel->black)));
pixel->blue=((QuantumRange-(QuantumScale*pixel->blue*(QuantumRange-
pixel->black)+pixel->black)));
}
static inline void ConvertRGBToCMYK(PixelInfo *pixel)
{
MagickRealType
black,
blue,
cyan,
green,
magenta,
red,
yellow;
if (pixel->colorspace != sRGBColorspace)
{
red=QuantumScale*pixel->red;
green=QuantumScale*pixel->green;
blue=QuantumScale*pixel->blue;
}
else
{
red=QuantumScale*DecodePixelGamma(pixel->red);
green=QuantumScale*DecodePixelGamma(pixel->green);
blue=QuantumScale*DecodePixelGamma(pixel->blue);
}
if ((fabs((double) red) < MagickEpsilon) &&
(fabs((double) green) < MagickEpsilon) &&
(fabs((double) blue) < MagickEpsilon))
{
pixel->black=(MagickRealType) QuantumRange;
return;
}
cyan=(MagickRealType) (1.0-red);
magenta=(MagickRealType) (1.0-green);
yellow=(MagickRealType) (1.0-blue);
black=cyan;
if (magenta < black)
black=magenta;
if (yellow < black)
black=yellow;
cyan=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(cyan-black));
magenta=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(magenta-black));
yellow=(MagickRealType) (PerceptibleReciprocal(1.0-black)*(yellow-black));
pixel->colorspace=CMYKColorspace;
pixel->red=QuantumRange*cyan;
pixel->green=QuantumRange*magenta;
pixel->blue=QuantumRange*yellow;
pixel->black=QuantumRange*black;
}
static inline MagickBooleanType IsCMYKColorspace(
const ColorspaceType colorspace)
{
if (colorspace == CMYKColorspace)
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IsGrayColorspace(
const ColorspaceType colorspace)
{
if ((colorspace == LinearGRAYColorspace) || (colorspace == GRAYColorspace))
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IsHueCompatibleColorspace(
const ColorspaceType colorspace)
{
if ((colorspace == HCLColorspace) || (colorspace == HCLpColorspace) ||
(colorspace == HSBColorspace) || (colorspace == HSIColorspace) ||
(colorspace == HSLColorspace) || (colorspace == HSVColorspace))
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IsRGBColorspace(const ColorspaceType colorspace)
{
if ((colorspace == RGBColorspace) || (colorspace == scRGBColorspace) ||
(colorspace == LinearGRAYColorspace))
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IssRGBColorspace(
const ColorspaceType colorspace)
{
if ((colorspace == sRGBColorspace) || (colorspace == TransparentColorspace))
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IssRGBCompatibleColorspace(
const ColorspaceType colorspace)
{
if ((colorspace == sRGBColorspace) || (colorspace == RGBColorspace) ||
(colorspace == scRGBColorspace) || (colorspace == TransparentColorspace) ||
(colorspace == GRAYColorspace) || (colorspace == LinearGRAYColorspace))
return(MagickTrue);
return(MagickFalse);
}
static inline MagickBooleanType IsYCbCrCompatibleColorspace(
const ColorspaceType colorspace)
{
if ((colorspace == YCbCrColorspace) ||
(colorspace == Rec709YCbCrColorspace) ||
(colorspace == Rec601YCbCrColorspace))
return(MagickTrue);
return(MagickFalse);
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
|
