MagickCore  6.9.10
Convert, Edit, Or Compose Bitmap Images
image-private.h
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1 /*
2  Copyright 1999-2019 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.
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 #include <errno.h>
19 #include <stdint.h>
20 #include <limits.h>
21 #ifndef MAGICKCORE_IMAGE_PRIVATE_H
22 #define MAGICKCORE_IMAGE_PRIVATE_H
23 
24 #if defined(__cplusplus) || defined(c_plusplus)
25 extern "C" {
26 #endif
27 
28 #define MagickAbsoluteValue(x) ((x) < 0 ? -(x) : (x))
29 #define MagickMax(x,y) (((x) > (y)) ? (x) : (y))
30 #define MagickMin(x,y) (((x) < (y)) ? (x) : (y))
31 #define MagickPI 3.14159265358979323846264338327950288419716939937510
32 #define Magick2PI 6.28318530717958647692528676655900576839433879875020
33 #define MagickPHI 1.61803398874989484820458683436563811772030917980576
34 #define MagickPI2 1.57079632679489661923132169163975144209858469968755
35 #define MagickSQ1_2 0.70710678118654752440084436210484903928483593768847
36 #define MagickSQ2 1.41421356237309504880168872420969807856967187537695
37 #define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062
38 #define MAGICK_SIZE_MAX (SIZE_MAX)
39 #define MAGICK_SSIZE_MAX (SSIZE_MAX)
40 #define MAGICK_SSIZE_MIN (-(SSIZE_MAX)-1)
41 #define UndefinedTicksPerSecond 100L
42 #define UndefinedCompressionQuality 0UL
43 
44 extern MagickExport const char
58 
59 extern MagickExport const double
61 
62 static inline size_t CastDoubleToUnsigned(const double x)
63 {
64  if (IsNaN(x) != 0)
65  {
66  errno=ERANGE;
67  return(0);
68  }
69  if (floor(x) > ((double) MAGICK_SSIZE_MAX-1))
70  {
71  errno=ERANGE;
72  return((size_t) MAGICK_SIZE_MAX);
73  }
74  if (ceil(x) < 0.0)
75  {
76  errno=ERANGE;
77  return(0);
78  }
79  return((size_t) x);
80 }
81 
82 static inline double DegreesToRadians(const double degrees)
83 {
84  return((double) (MagickPI*degrees/180.0));
85 }
86 
87 static inline MagickRealType RadiansToDegrees(const MagickRealType radians)
88 {
89  return((MagickRealType) (180.0*radians/MagickPI));
90 }
91 
92 static inline unsigned char ScaleColor5to8(const unsigned int color)
93 {
94  return((unsigned char) (((color) << 3) | ((color) >> 2)));
95 }
96 
97 static inline unsigned char ScaleColor6to8(const unsigned int color)
98 {
99  return((unsigned char) (((color) << 2) | ((color) >> 4)));
100 }
101 
102 static inline unsigned int ScaleColor8to5(const unsigned char color)
103 {
104  return((unsigned int) (((color) & ~0x07) >> 3));
105 }
106 
107 static inline unsigned int ScaleColor8to6(const unsigned char color)
108 {
109  return((unsigned int) (((color) & ~0x03) >> 2));
110 }
111 
112 #if defined(__cplusplus) || defined(c_plusplus)
113 }
114 #endif
115 
116 #endif
MagickExport
#define MagickExport
Definition: method-attribute.h:80
DefaultTileFrame
const MagickExport char DefaultTileFrame[]
Definition: image-private.h:47
ForegroundColor
const MagickExport char ForegroundColor[]
Definition: image-private.h:50
BackgroundColor
const MagickExport char BackgroundColor[]
Definition: image.c:109
RadiansToDegrees
static MagickRealType RadiansToDegrees(const MagickRealType radians)
Definition: image-private.h:87
LoadImagesTag
const MagickExport char LoadImagesTag[]
Definition: image-private.h:53
ScaleColor8to6
static unsigned int ScaleColor8to6(const unsigned char color)
Definition: image-private.h:107
MAGICK_SSIZE_MAX
#define MAGICK_SSIZE_MAX
Definition: image-private.h:39
MatteColor
const MagickExport char MatteColor[]
Definition: image-private.h:51
ScaleColor6to8
static unsigned char ScaleColor6to8(const unsigned int color)
Definition: image-private.h:97
ScaleColor8to5
static unsigned int ScaleColor8to5(const unsigned char color)
Definition: image-private.h:102
IsNaN
#define IsNaN(a)
Definition: magick-type.h:214
SaveImageTag
const MagickExport char SaveImageTag[]
Definition: image-private.h:56
PSDensityGeometry
const MagickExport char PSDensityGeometry[]
Definition: image-private.h:54
DefaultTileGeometry
const MagickExport char DefaultTileGeometry[]
Definition: image-private.h:48
SaveImagesTag
const MagickExport char SaveImagesTag[]
Definition: image-private.h:57
CastDoubleToUnsigned
static size_t CastDoubleToUnsigned(const double x)
Definition: image-private.h:62
MagickPI
#define MagickPI
Definition: image-private.h:31
LoadImageTag
const MagickExport char LoadImageTag[]
Definition: image-private.h:52
DefaultResolution
const MagickExport double DefaultResolution
Definition: image.c:125
DegreesToRadians
static double DegreesToRadians(const double degrees)
Definition: image-private.h:82
MagickRealType
MagickDoubleType MagickRealType
Definition: magick-type.h:125
DefaultTileLabel
const MagickExport char DefaultTileLabel[]
Definition: image-private.h:49
MAGICK_SIZE_MAX
#define MAGICK_SIZE_MAX
Definition: image-private.h:38
BorderColor
const MagickExport char BorderColor[]
Definition: image-private.h:46
PSPageGeometry
const MagickExport char PSPageGeometry[]
Definition: image-private.h:55
ScaleColor5to8
static unsigned char ScaleColor5to8(const unsigned int color)
Definition: image-private.h:92