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1 /*
2   Copyright 1999-2016 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     http://www.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 graphic resample methods.
17 */
18 #ifndef MAGICKCORE_RESAMPLE_H
19 #define MAGICKCORE_RESAMPLE_H
20 
21 #include "MagickCore/cache-view.h"
22 
23 #if defined(__cplusplus) || defined(c_plusplus)
24 extern "C" {
25 #endif
26 
27 /*
28   WARNING:  The order of this table must also match the order of a table
29   located in AcquireResizeFilter() in "resize.c" otherwise the users filter
30   will not match the actual filter that is setup.
31 */
32 typedef enum
33 {
34   UndefinedFilter,
35   PointFilter,
36   BoxFilter,
37   TriangleFilter,
38   HermiteFilter,
39   HannFilter,
40   HammingFilter,
41   BlackmanFilter,
42   GaussianFilter,
43   QuadraticFilter,
44   CubicFilter,
45   CatromFilter,
46   MitchellFilter,
47   JincFilter,
48   SincFilter,
49   SincFastFilter,
50   KaiserFilter,
51   WelchFilter,
52   ParzenFilter,
53   BohmanFilter,
54   BartlettFilter,
55   LagrangeFilter,
56   LanczosFilter,
57   LanczosSharpFilter,
58   Lanczos2Filter,
59   Lanczos2SharpFilter,
60   RobidouxFilter,
61   RobidouxSharpFilter,
62   CosineFilter,
63   SplineFilter,
64   LanczosRadiusFilter,
65   SentinelFilter  /* a count of all the filters, not a real filter */
66 } FilterType;
67 
68 /*
69   Backward compatibility for the more correctly named Jinc Filter.  Original
70   source of this filter is from "zoom" but it refers to a reference by Pratt,
71   who does not actualy name the filter.
72 
73   also miss-spellings of common filters
74 */
75 #define BesselFilter  JincFilter
76 #define WelshFilter   WelchFilter
77 #define HanningFilter HannFilter
78 
79 typedef struct _ResampleFilter
80   ResampleFilter;
81 
82 extern MagickExport MagickBooleanType
83   ResamplePixelColor(ResampleFilter *,const double,const double,
84     PixelInfo *,ExceptionInfo *),
85   SetResampleFilterInterpolateMethod(ResampleFilter *,
86     const PixelInterpolateMethod),
87   SetResampleFilterVirtualPixelMethod(ResampleFilter *,
88     const VirtualPixelMethod);
89 
90 extern MagickExport ResampleFilter
91   *AcquireResampleFilter(const Image *,ExceptionInfo *),
92   *DestroyResampleFilter(ResampleFilter *);
93 
94 extern MagickExport void
95   ScaleResampleFilter(ResampleFilter *,const double,const double,const double,
96     const double),
97   SetResampleFilter(ResampleFilter *,const FilterType);
98 
99 #if defined(__cplusplus) || defined(c_plusplus)
100 }
101 #endif
102 
103 #endif
104