MagickCore  7.1.1-43
Convert, Edit, Or Compose Bitmap Images
image-private.h
1 /*
2  Copyright @ 1999 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 private methods.
17 */
18 #ifndef MAGICKCORE_IMAGE_PRIVATE_H
19 #define MAGICKCORE_IMAGE_PRIVATE_H
20 
21 #if defined(__cplusplus) || defined(c_plusplus)
22 extern "C" {
23 #endif
24 
25 #define MagickMax(x,y) (((x) > (y)) ? (x) : (y))
26 #define MagickMin(x,y) (((x) < (y)) ? (x) : (y))
27 
28 #include "MagickCore/pixel-accessor.h"
29 #include "MagickCore/quantum-private.h"
30 
31 #define BackgroundColor "#ffffff" /* white */
32 #define BackgroundColorRGBA QuantumRange,QuantumRange,QuantumRange,OpaqueAlpha
33 #define BorderColor "#dfdfdf" /* gray */
34 #define BorderColorRGBA ScaleShortToQuantum(0xdfdf),\
35  ScaleShortToQuantum(0xdfdf),ScaleShortToQuantum(0xdfdf),OpaqueAlpha
36 #define DefaultResolution 72.0
37 #define DefaultTileFrame "15x15+3+3"
38 #define DefaultTileGeometry "120x120+4+3>"
39 #define DefaultTileLabel "%f\n%G\n%b"
40 #define ForegroundColor "#000" /* black */
41 #define ForegroundColorRGBA 0,0,0,OpaqueAlpha
42 #define LoadImagesTag "Load/Images"
43 #define LoadImageTag "Load/Image"
44 #define Magick2PI 6.28318530717958647692528676655900576839433879875020
45 #define MagickAbsoluteValue(x) ((x) < 0 ? -(x) : (x))
46 #define MagickPHI 1.61803398874989484820458683436563811772030917980576
47 #define MagickPI2 1.57079632679489661923132169163975144209858469968755
48 #define MagickPI 3.1415926535897932384626433832795028841971693993751058209749445923078164062
49 #define MagickSQ1_2 0.70710678118654752440084436210484903928483593768847
50 #define MagickSQ2 1.41421356237309504880168872420969807856967187537695
51 #define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062
52 #define MAGICK_SIZE_MAX (SIZE_MAX)
53 #define MAGICK_SSIZE_MAX (SSIZE_MAX)
54 #define MAGICK_SSIZE_MIN (-SSIZE_MAX-1)
55 #define MatteColor "#bdbdbd" /* gray */
56 #define MatteColorRGBA ScaleShortToQuantum(0xbdbd),\
57  ScaleShortToQuantum(0xbdbd),ScaleShortToQuantum(0xbdbd),OpaqueAlpha
58 #define PSDensityGeometry "72.0x72.0"
59 #define PSPageGeometry "612x792"
60 #define SaveImagesTag "Save/Images"
61 #define SaveImageTag "Save/Image"
62 #define TransparentColor "#00000000" /* transparent black */
63 #define TransparentColorRGBA 0,0,0,TransparentAlpha
64 #define UndefinedCompressionQuality 0UL
65 #define UndefinedTicksPerSecond 100L
66 
67 static inline ssize_t CastDoubleToLong(const double x)
68 {
69  double
70  value;
71 
72  if (IsNaN(x) != 0)
73  {
74  errno=ERANGE;
75  return(0);
76  }
77  if (x < 0.0)
78  {
79  value=ceil(x);
80  if (value < ((double) MAGICK_SSIZE_MIN))
81  {
82  errno=ERANGE;
83  return((ssize_t) MAGICK_SSIZE_MIN);
84  }
85  }
86  else
87  {
88  value=floor(x);
89  if (value > ((double) MAGICK_SSIZE_MAX))
90  {
91  errno=ERANGE;
92  return((ssize_t) MAGICK_SSIZE_MAX);
93  }
94  }
95  return((ssize_t) value);
96 }
97 
98 static inline QuantumAny CastDoubleToQuantumAny(const double x)
99 {
100  if (IsNaN(x) != 0)
101  {
102  errno=ERANGE;
103  return(0);
104  }
105  if (x > ((double) ((QuantumAny) ~0)))
106  {
107  errno=ERANGE;
108  return((QuantumAny) ~0);
109  }
110  if (x < 0.0)
111  {
112  errno=ERANGE;
113  return((QuantumAny) 0);
114  }
115  return((QuantumAny) (x+0.5));
116 }
117 
118 static inline size_t CastDoubleToUnsigned(const double x)
119 {
120  double
121  value;
122 
123  if (IsNaN(x) != 0)
124  {
125  errno=ERANGE;
126  return(0);
127  }
128  value=floor(x);
129  if (value >= ((double) MAGICK_SIZE_MAX))
130  {
131  errno=ERANGE;
132  return((size_t) MAGICK_SIZE_MAX);
133  }
134  if (value < 0.0)
135  {
136  errno=ERANGE;
137  return(0);
138  }
139  return((size_t) value);
140 }
141 
142 static inline double DegreesToRadians(const double degrees)
143 {
144  return((double) (MagickPI*degrees/180.0));
145 }
146 
147 static inline size_t GetImageChannels(const Image *image)
148 {
149  ssize_t
150  i;
151 
152  size_t
153  channels;
154 
155  channels=0;
156  for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
157  {
158  PixelChannel channel = GetPixelChannelChannel(image,i);
159  PixelTrait traits = GetPixelChannelTraits(image,channel);
160  if ((traits & UpdatePixelTrait) != 0)
161  channels++;
162  }
163  return(channels == 0 ? (size_t) 1 : channels);
164 }
165 
166 static inline double RadiansToDegrees(const double radians)
167 {
168  return((double) (180.0*radians/MagickPI));
169 }
170 
171 static inline unsigned char ScaleColor5to8(const unsigned int color)
172 {
173  return((unsigned char) (((color) << 3) | ((color) >> 2)));
174 }
175 
176 static inline unsigned char ScaleColor6to8(const unsigned int color)
177 {
178  return((unsigned char) (((color) << 2) | ((color) >> 4)));
179 }
180 
181 static inline unsigned int ScaleColor8to5(const unsigned char color)
182 {
183  return((unsigned int) (((color) & ~0x07) >> 3));
184 }
185 
186 static inline unsigned int ScaleColor8to6(const unsigned char color)
187 {
188  return((unsigned int) (((color) & ~0x03) >> 2));
189 }
190 
191 #if defined(__cplusplus) || defined(c_plusplus)
192 }
193 #endif
194 
195 #endif
_Image
Definition: image.h:131