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/*
ImageMagick Cache Methods.
*/
#ifndef _MAGICK_CACHE_H
#define _MAGICK_CACHE_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#include "blob.h"
/*
Enum declaractions.
*/
typedef enum
{
UndefinedCache,
MemoryCache,
DiskCache,
MapCache
} CacheType;
typedef enum
{
UndefinedVirtualPixelMethod,
ConstantVirtualPixelMethod,
EdgeVirtualPixelMethod,
MirrorVirtualPixelMethod,
TileVirtualPixelMethod
} VirtualPixelMethod;
/*
Typedef declaractions.
*/
typedef void
*Cache;
typedef IndexPacket
*(*GetIndexesFromHandler)(const Image *);
typedef const PixelPacket
*(*AcquirePixelHandler)(const Image *,const long,const long,
const unsigned long,const unsigned long,ExceptionInfo *);
typedef PixelPacket
(*AcquireOnePixelFromHandler)(const Image *,const long,const long,
ExceptionInfo *);
typedef PixelPacket
(*GetOnePixelFromHandler)(Image *,const long,const long);
typedef PixelPacket
*(*GetPixelHandler)(Image *,const long,const long,const unsigned long,
const unsigned long);
typedef PixelPacket
*(*GetPixelsFromHandler)(const Image *);
typedef PixelPacket
*(*SetPixelHandler)(Image *,const long,const long,const unsigned long,
const unsigned long);
typedef unsigned int
(*SyncPixelHandler)(Image *);
typedef void
(*DestroyPixelHandler)(Image *);
typedef struct _CacheMethods
{
AcquireOnePixelFromHandler
acquire_one_pixel_from_handler;
AcquirePixelHandler
acquire_pixel_handler;
DestroyPixelHandler
destroy_pixel_handler;
GetIndexesFromHandler
get_indexes_from_handler;
GetOnePixelFromHandler
get_one_pixel_from_handler;
GetPixelHandler
get_pixel_handler;
GetPixelsFromHandler
get_pixels_from_handler;
SetPixelHandler
set_pixel_handler;
SyncPixelHandler
sync_pixel_handler;
} CacheMethods;
typedef struct _NexusInfo
{
long
x,
y;
ExtendedSignedIntegralType
length;
PixelPacket
*staging,
*pixels;
IndexPacket
*indexes;
unsigned long
columns,
rows;
unsigned int
available;
} NexusInfo;
typedef struct _CacheInfo
{
unsigned long
id;
NexusInfo
*nexus_info;
ClassType
storage_class;
ColorspaceType
colorspace;
CacheType
type;
unsigned long
columns,
rows;
ExtendedSignedIntegralType
offset,
length;
PixelPacket
*pixels;
IndexPacket
*indexes;
VirtualPixelMethod
virtual_pixel_method;
PixelPacket
virtual_pixel;
int
file;
char
filename[MaxTextExtent],
cache_filename[MaxTextExtent];
CacheMethods
methods;
long
reference_count;
SemaphoreInfo
*semaphore;
unsigned long
signature;
} CacheInfo;
/*
MagickExported interfaces.
*/
extern MagickExport Cache
ReferenceCache(Cache);
extern MagickExport ClassType
GetCacheClass(const Cache);
extern MagickExport ColorspaceType
GetCacheColorspace(const Cache);
extern MagickExport const PixelPacket
*AcquireCacheNexus(const Image *,const long,const long,const unsigned long,
const unsigned long,const unsigned long,ExceptionInfo *);
extern MagickExport ExtendedSignedIntegralType
GetPixelCacheArea(const Image *);
extern MagickExport IndexPacket
*GetNexusIndexes(const Cache,const unsigned long);
extern MagickExport PixelPacket
*GetCacheNexus(Image *,const long,const long,const unsigned long,
const unsigned long,const unsigned long),
*GetNexusPixels(const Cache,const unsigned long),
*SetCacheNexus(Image *,const long,const long,const unsigned long,
const unsigned long,const unsigned long);
extern MagickExport unsigned int
OpenCache(Image *,const MapMode),
PersistCache(Image *,const char *,const unsigned int,
ExtendedSignedIntegralType *,ExceptionInfo *),
SyncCacheNexus(Image *,const unsigned long);
extern MagickExport unsigned long
GetNexus(Cache);
extern MagickExport VirtualPixelMethod
GetImageVirtualPixelMethod(const Image *);
extern MagickExport void
AllocateCacheNexus(CacheInfo *),
ClonePixelCacheMethods(Cache,const Cache),
DestroyCacheInfo(Cache),
DestroyCacheNexus(Cache,const unsigned long),
GetCacheInfo(Cache *),
SetImageVirtualPixelMethod(const Image *,const VirtualPixelMethod),
SetPixelCacheMethods(Cache,AcquirePixelHandler,GetPixelHandler,
SetPixelHandler,SyncPixelHandler,GetPixelsFromHandler,GetIndexesFromHandler,
AcquireOnePixelFromHandler,GetOnePixelFromHandler,DestroyPixelHandler);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
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