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"
23 #include "magick/image-private.h"
24 #include "magick/memory_.h"
25 #include "magick/pixel-accessor.h"
26 #include "magick/quantum-private.h"
27
28 #if defined(__cplusplus) || defined(c_plusplus)
29 extern "C" {
30 #endif
31
IsGrayPixel(const PixelPacket * pixel)32 static 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
IsMonochromePixel(const PixelPacket * pixel)53 static inline MagickBooleanType IsMonochromePixel(const PixelPacket *pixel)
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
SetMagickPixelPacket(const Image * image,const PixelPacket * color,const IndexPacket * index,MagickPixelPacket * pixel)78 static 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);
84 pixel->opacity=(MagickRealType) GetPixelOpacity(color);
85 if ((image->colorspace == CMYKColorspace) &&
86 (index != (const IndexPacket *) NULL))
87 pixel->index=(MagickRealType) GetPixelIndex(index);
88 }
89
SetMagickPixelPacketBias(const Image * image,MagickPixelPacket * pixel)90 static 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
SetPixelPacket(const Image * image,const MagickPixelPacket * pixel,PixelPacket * color,IndexPacket * index)103 static 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));
109 SetPixelOpacity(color,ClampToQuantum(pixel->opacity));
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
120