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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