2 Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization
3 dedicated to making software imaging solutions freely available.
5 You may not use this file except in compliance with the License.
6 obtain a copy of the License at
8 http://www.imagemagick.org/script/license.php
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.
16 MagickCore image pixel methods.
18 #ifndef _MAGICKCORE_PIXEL_H
19 #define _MAGICKCORE_PIXEL_H
21 #if defined(__cplusplus) || defined(c_plusplus)
25 #include "MagickCore/colorspace.h"
27 #define MaxPixelChannels 32
32 UndefinedChannel = 0x0000,
36 GreenChannel = 0x0002,
37 MagentaChannel = 0x0002,
39 YellowChannel = 0x0004,
40 BlackChannel = 0x0008,
41 AlphaChannel = 0x0010,
42 OpacityChannel = 0x0010,
43 IndexChannel = 0x0020,
46 CompositeChannels = 0x002F,
47 AllChannels = 0x7ffffff,
49 Special purpose channel types.
50 FUTURE: are these needed any more - they are more like hacks
51 SyncChannels for example is NOT a real channel but a 'flag'
52 It really says -- "User has not defined channels"
54 TrueAlphaChannel = 0x0100, /* extract actual alpha channel from opacity */
55 RGBChannels = 0x0200, /* set alpha from grayscale mask in RGB */
56 GrayChannels = 0x0400,
57 SyncChannels = 0x20000, /* channels modified as a single unit */
58 DefaultChannels = ((AllChannels | SyncChannels) &~ AlphaChannel)
59 } ChannelType; /* must correspond to PixelChannel */
63 UndefinedPixelChannel = 0,
70 GreenPixelChannel = 1,
71 MagentaPixelChannel = 1,
75 YellowPixelChannel = 2,
77 BlackPixelChannel = 3,
78 AlphaPixelChannel = 4,
79 IndexPixelChannel = 5,
80 MaskPixelChannel = 6, /* Image Write Mask */
81 MetaPixelChannel = 7, /* ??? */
82 IntensityPixelChannel = MaxPixelChannels, /* what are these ??? */
83 CompositePixelChannel = MaxPixelChannels,
84 SyncPixelChannel = MaxPixelChannels+1
85 } PixelChannel; /* must correspond to ChannelType */
89 UndefinedPixelIntensityMethod = 0,
90 AveragePixelIntensityMethod,
91 BrightnessPixelIntensityMethod,
92 LightnessPixelIntensityMethod,
93 Rec601LumaPixelIntensityMethod,
94 Rec601LuminancePixelIntensityMethod,
95 Rec709LumaPixelIntensityMethod,
96 Rec709LuminancePixelIntensityMethod,
97 RMSPixelIntensityMethod
98 } PixelIntensityMethod;
102 UndefinedInterpolatePixel,
103 AverageInterpolatePixel, /* Average 4 nearest neighbours */
104 Average9InterpolatePixel, /* Average 9 nearest neighbours */
105 Average16InterpolatePixel, /* Average 16 nearest neighbours */
106 BackgroundInterpolatePixel, /* Just return background color */
107 BilinearInterpolatePixel, /* Triangular filter interpolation */
108 BlendInterpolatePixel, /* blend of nearest 1, 2 or 4 pixels */
109 CatromInterpolatePixel, /* Catmull-Rom interpolation */
110 IntegerInterpolatePixel, /* Integer (floor) interpolation */
111 MeshInterpolatePixel, /* Triangular Mesh interpolation */
112 NearestInterpolatePixel, /* Nearest Neighbour Only */
113 SplineInterpolatePixel /* Cubic Spline (blurred) interpolation */
114 /* FilterInterpolatePixel, ** Use resize filter - (very slow) */
115 } PixelInterpolateMethod;
119 UndefinedPixelTrait = 0x000000,
120 CopyPixelTrait = 0x000001,
121 UpdatePixelTrait = 0x000002,
122 BlendPixelTrait = 0x000004
125 typedef struct _PixelChannelMap
137 typedef struct _PixelInfo
166 typedef struct _PixelPacket
188 typedef struct _CacheView
191 extern MagickExport MagickBooleanType
192 ExportImagePixels(Image *,const ssize_t,const ssize_t,const size_t,
193 const size_t,const char *,const StorageType,void *,ExceptionInfo *),
194 ImportImagePixels(Image *,const ssize_t,const ssize_t,const size_t,
195 const size_t,const char *,const StorageType,const void *,ExceptionInfo *),
196 InterpolatePixelChannel(const Image *,const CacheView_ *,
197 const PixelChannel,const PixelInterpolateMethod,const double,const double,
198 double *,ExceptionInfo *),
199 InterpolatePixelChannels(const Image *,const CacheView_ *,const Image *,
200 const PixelInterpolateMethod,const double,const double,Quantum *,
202 InterpolatePixelInfo(const Image *,const CacheView_ *,
203 const PixelInterpolateMethod,const double,const double,PixelInfo *,
205 IsFuzzyEquivalencePixel(const Image *,const Quantum *,const Image *,
207 IsFuzzyEquivalencePixelInfo(const PixelInfo *,const PixelInfo *),
208 SetPixelMetaChannels(Image *,const size_t,ExceptionInfo *);
210 extern MagickExport MagickRealType
211 GetPixelIntensity(const Image *restrict,const Quantum *restrict)
214 extern MagickExport PixelChannelMap
215 *AcquirePixelChannelMap(void),
216 *ClonePixelChannelMap(PixelChannelMap *),
217 *DestroyPixelChannelMap(PixelChannelMap *);
219 extern MagickExport PixelInfo
220 *ClonePixelInfo(const PixelInfo *);
222 extern MagickExport MagickRealType
223 DecodePixelGamma(const MagickRealType) magick_hot_spot,
224 EncodePixelGamma(const MagickRealType) magick_hot_spot;
226 extern MagickExport void
227 InitializePixelChannelMap(Image *),
228 GetPixelInfo(const Image *,PixelInfo *),
229 SetPixelChannelMask(Image *,const ChannelType);
231 #if defined(__cplusplus) || defined(c_plusplus)