2 Copyright 1999-2012 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 UndefinedInterpolatePixel,
64 AverageInterpolatePixel, /* Average 4 nearest neighbours */
65 Average9InterpolatePixel, /* Average 9 nearest neighbours */
66 Average16InterpolatePixel, /* Average 16 nearest neighbours */
67 BackgroundInterpolatePixel, /* Just return background color */
68 BilinearInterpolatePixel, /* Triangular filter interpolation */
69 BlendInterpolatePixel, /* blend of nearest 1, 2 or 4 pixels */
70 CatromInterpolatePixel, /* Catmull-Rom interpolation */
71 IntegerInterpolatePixel, /* Integer (floor) interpolation */
72 MeshInterpolatePixel, /* Triangular Mesh interpolation */
73 NearestInterpolatePixel, /* Nearest Neighbour Only */
74 SplineInterpolatePixel /* Cubic Spline (blurred) interpolation */
75 /* FilterInterpolatePixel, ** Use resize filter - (very slow) */
76 } PixelInterpolateMethod;
80 UndefinedPixelChannel = 0,
87 GreenPixelChannel = 1,
88 MagentaPixelChannel = 1,
92 YellowPixelChannel = 2,
94 BlackPixelChannel = 3,
95 AlphaPixelChannel = 4,
96 IndexPixelChannel = 5,
97 MaskPixelChannel = 6, /* Image Write Mask */
98 MetaPixelChannel = 7, /* ??? */
99 IntensityPixelChannel = MaxPixelChannels, /* what are these ??? */
100 CompositePixelChannel = MaxPixelChannels,
101 SyncPixelChannel = MaxPixelChannels+1
102 } PixelChannel; /* must correspond to ChannelType */
106 UndefinedPixelTrait = 0x000000,
107 CopyPixelTrait = 0x000001,
108 UpdatePixelTrait = 0x000002,
109 BlendPixelTrait = 0x000004
112 typedef struct _PixelChannelMap
124 typedef struct _PixelInfo
153 typedef struct _PixelPacket
175 typedef struct _CacheView
178 extern MagickExport MagickBooleanType
179 ExportImagePixels(Image *,const ssize_t,const ssize_t,const size_t,
180 const size_t,const char *,const StorageType,void *,ExceptionInfo *),
181 ImportImagePixels(Image *,const ssize_t,const ssize_t,const size_t,
182 const size_t,const char *,const StorageType,const void *,ExceptionInfo *),
183 InterpolatePixelChannel(const Image *,const CacheView_ *,
184 const PixelChannel,const PixelInterpolateMethod,const double,const double,
185 double *,ExceptionInfo *),
186 InterpolatePixelChannels(const Image *,const CacheView_ *,const Image *,
187 const PixelInterpolateMethod,const double,const double,Quantum *,
189 InterpolatePixelInfo(const Image *,const CacheView_ *,
190 const PixelInterpolateMethod,const double,const double,PixelInfo *,
192 IsFuzzyEquivalencePixel(const Image *,const Quantum *,const Image *,
194 IsFuzzyEquivalencePixelInfo(const PixelInfo *,const PixelInfo *),
195 SetPixelMetaChannels(Image *,const size_t,ExceptionInfo *);
197 extern MagickExport PixelChannelMap
198 *AcquirePixelChannelMap(void),
199 *ClonePixelChannelMap(PixelChannelMap *),
200 *DestroyPixelChannelMap(PixelChannelMap *);
202 extern MagickExport PixelInfo
203 *ClonePixelInfo(const PixelInfo *);
205 extern MagickExport void
206 InitializePixelChannelMap(Image *),
207 GetPixelInfo(const Image *,PixelInfo *),
208 SetPixelChannelMask(Image *,const ChannelType);
210 #if defined(__cplusplus) || defined(c_plusplus)