root/ImageMagick/trunk/magick/cache.h

/*
  Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization
  dedicated to making software imaging solutions freely available.
  
  You may not use this file except in compliance with the License.
  obtain a copy of the License at
  
    http://www.imagemagick.org/script/license.php
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

  MagickCore cache methods.
*/
#ifndef _MAGICKCORE_CACHE_H
#define _MAGICKCORE_CACHE_H

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

#include "magick/blob.h"

extern MagickExport const IndexPacket
  *GetVirtualIndexQueue(const Image *);

extern MagickExport const PixelPacket
  *GetVirtualPixels(const Image *,const long,const long,const unsigned long,
    const unsigned long,ExceptionInfo *),
  *GetVirtualPixelQueue(const Image *);

extern MagickExport IndexPacket
  *GetAuthenticIndexQueue(const Image *);

extern MagickExport MagickBooleanType
  CacheComponentGenesis(void),
  GetOneVirtualMagickPixel(const Image *,const long,const long,
    MagickPixelPacket *,ExceptionInfo *),
  GetOneVirtualPixel(const Image *,const long,const long,PixelPacket *,
    ExceptionInfo *),
  GetOneVirtualMethodPixel(const Image *,const VirtualPixelMethod,const long,
    const long,PixelPacket *,ExceptionInfo *),
  GetOneAuthenticPixel(Image *,const long,const long,PixelPacket *,
    ExceptionInfo *),
  PersistPixelCache(Image *,const char *,const MagickBooleanType,
    MagickOffsetType *,ExceptionInfo *),
  SyncAuthenticPixels(Image *,ExceptionInfo *);

extern MagickExport MagickSizeType
  GetImageExtent(const Image *);

extern MagickExport PixelPacket
  *GetAuthenticPixels(Image *,const long,const long,const unsigned long,
    const unsigned long,ExceptionInfo *),
  *GetAuthenticPixelQueue(const Image *),
  *QueueAuthenticPixels(Image *,const long,const long,const unsigned long,
    const unsigned long,ExceptionInfo *);

extern MagickExport VirtualPixelMethod
  GetPixelCacheVirtualMethod(const Image *),
  SetPixelCacheVirtualMethod(const Image *,const VirtualPixelMethod);

extern MagickExport void
  CacheComponentTerminus(void);

#if defined(__cplusplus) || defined(c_plusplus)
}
#endif

#endif