resample-private.h revision fe676ee3a9cf43404bdc9ba8b27f597b5e4e28f7 
1/*
2  Copyright 1999-2014 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 image resampling private methods.
17*/
18#ifndef _MAGICKCORE_RESAMPLE_PRIVATE_H
19#define _MAGICKCORE_RESAMPLE_PRIVATE_H
20
21#if defined(__cplusplus) || defined(c_plusplus)
22extern "C" {
23#endif
24
25#include "MagickCore/thread-private.h"
26
27static inline ResampleFilter **DestroyResampleFilterThreadSet(
28  ResampleFilter **filter)
29{
30  register ssize_t
31    i;
32
33  assert(filter != (ResampleFilter **) NULL);
34  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
35    if (filter[i] != (ResampleFilter *) NULL)
36      filter[i]=DestroyResampleFilter(filter[i]);
37  filter=(ResampleFilter **) RelinquishMagickMemory(filter);
38  return(filter);
39}
40
41static inline ResampleFilter **AcquireResampleFilterThreadSet(
42  const Image *image,const VirtualPixelMethod method,
43  const MagickBooleanType interpolate,ExceptionInfo *exception)
44{
45  register ssize_t
46    i;
47
48  ResampleFilter
49    **filter;
50
51  size_t
52    number_threads;
53
54  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
55  filter=(ResampleFilter **) AcquireQuantumMemory(number_threads,
56    sizeof(*filter));
57  if (filter == (ResampleFilter **) NULL)
58    return((ResampleFilter **) NULL);
59  (void) ResetMagickMemory(filter,0,number_threads*sizeof(*filter));
60  for (i=0; i < (ssize_t) number_threads; i++)
61  {
62    filter[i]=AcquireResampleFilter(image,exception);
63    if (filter[i] == (ResampleFilter *) NULL)
64      return(DestroyResampleFilterThreadSet(filter));
65    if (method != UndefinedVirtualPixelMethod)
66      (void) SetResampleFilterVirtualPixelMethod(filter[i],method);
67    if (interpolate != MagickFalse)
68      SetResampleFilter(filter[i],PointFilter);
69  }
70  return(filter);
71}
72
73#if defined(__cplusplus) || defined(c_plusplus)
74}
75#endif
76
77#endif
78