cache.c File Reference

#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/cache-private.h"
#include "magick/color-private.h"
#include "magick/composite-private.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/list.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/pixel-private.h"
#include "magick/quantum.h"
#include "magick/random_.h"
#include "magick/resource_.h"
#include "magick/semaphore.h"
#include "magick/splay-tree.h"
#include "magick/string_.h"
#include "magick/utility.h"
#include "zlib.h"
#include <pthread.h>

Data Structures
struct	_NexusInfo
Defines
#define	DefaultNumberCacheViews   8UL
Functions
static const PixelPacket *	AcquirePixelCache (const Image *, const VirtualPixelMethod, const long, const long, const unsigned long, const unsigned long, ExceptionInfo *)
static IndexPacket *	GetIndexesFromCache (const Image *)
static MagickBooleanType	OpenCache (Image *, const MapMode, ExceptionInfo *)
static MagickBooleanType	SyncCache (Image *)
static MagickBooleanType	SyncPixelCache (Image *)
static PixelPacket	AcquireOnePixelFromCache (const Image *, const VirtualPixelMethod, const long, const long, ExceptionInfo *)
static PixelPacket	GetOnePixelFromCache (Image *, const long, const long)
static PixelPacket *	GetPixelCache (Image *, const long, const long, const unsigned long, const unsigned long)
static PixelPacket **	GetPixelsFromCache (const Image *)
static PixelPacket ***	SetPixelCache (Image *, const long, const long, const unsigned long, const unsigned long)
static void	DestroyPixelCache (Image *)
static PixelPacket *	SetNexus (const Image *, const RectangleInfo *, const unsigned long)
static MagickBooleanType	ReadCacheIndexes (CacheInfo *, const unsigned long, ExceptionInfo *)
static MagickBooleanType	ReadCachePixels (CacheInfo *, const unsigned long, ExceptionInfo *)
static MagickBooleanType	WriteCacheIndexes (CacheInfo *, const unsigned long, ExceptionInfo *)
static MagickBooleanType	WriteCachePixels (CacheInfo *, const unsigned long, ExceptionInfo *)
static long	DitherX (const unsigned long columns, const long x)
static long	DitherY (const unsigned long rows, const long y)
static long	EdgeX (const unsigned long columns, const long x)
static long	EdgeY (const unsigned long rows, const long y)
static MagickSizeType	MagickMax (const MagickSizeType x, const MagickSizeType y)
static MagickSizeType	MagickMin (const MagickSizeType x, const MagickSizeType y)
static long	RandomX (const unsigned long columns)
static long	RandomY (const unsigned long rows)
static long	TileX (const unsigned long columns, const long x)
static long	TileY (const unsigned long rows, const long y)
static long	MirrorX (const unsigned long columns, const long x)
static long	MirrorY (const unsigned long rows, const long y)
static MagickBooleanType	IsNexusInCore (const CacheInfo *cache_info, const unsigned long nexus)
MagickExport const PixelPacket *	AcquireCacheNexus (const Image *image, const VirtualPixelMethod virtual_pixel_method, const long x, const long y, const unsigned long columns, const unsigned long rows, const unsigned long nexus, ExceptionInfo *exception)
MagickExport const PixelPacket *	AcquireImagePixels (const Image *image, const long x, const long y, const unsigned long columns, const unsigned long rows, ExceptionInfo *exception)
MagickExport const IndexPacket *	AcquireIndexes (const Image *image)
static const IndexPacket *	AcquireIndexesFromCache (const Image *image)
MagickExport const IndexPacket *	AcquireNexusIndexes (const Cache cache, const unsigned long nexus)
MagickExport MagickPixelPacket	AcquireOneMagickPixel (const Image *image, const long x, const long y, ExceptionInfo *exception)
MagickExport PixelPacket	AcquireOnePixel (const Image *image, const long x, const long y, ExceptionInfo *exception)
MagickExport PixelPacket	AcquireOneVirtualPixel (const Image *image, const VirtualPixelMethod virtual_pixel_method, const long x, const long y, ExceptionInfo *exception)
static MagickBooleanType	ClipCacheNexus (Image *image, const unsigned long nexus)
static void	AcquireNexusPixels (NexusInfo *nexus_info)
static MagickBooleanType	CloneCacheNexus (CacheInfo *destination, CacheInfo *source, const unsigned long nexus)
static MagickBooleanType	CloseDiskCache (CacheInfo *cache_info)
static unsigned long	GetCacheThreadId (void)
static void	LimitOpenCacheDescriptors (void)
static MagickBooleanType	OpenDiskCache (CacheInfo *cache_info, MapMode mode)
static MagickOffsetType	ReadCacheRegion (int file, unsigned char *buffer, MagickSizeType length, MagickOffsetType offset)
static MagickOffsetType	WriteCacheRegion (int file, const unsigned char *buffer, MagickSizeType length, MagickOffsetType offset)
static MagickBooleanType	CloneDiskToDiskPixels (CacheInfo *cache_info, CacheInfo *source_info, ExceptionInfo *exception)
static MagickBooleanType	CloneDiskToMemoryPixels (CacheInfo *cache_info, CacheInfo *source_info, ExceptionInfo *exception)
static MagickBooleanType	CloneMemoryToDiskPixels (CacheInfo *cache_info, CacheInfo *source_info, ExceptionInfo *exception)
static MagickBooleanType	CloneMemoryToMemoryPixels (CacheInfo *cache_info, CacheInfo *source_info, ExceptionInfo *magick_unused(exception))
static MagickBooleanType	ClonePixelCache (CacheInfo *cache_info, CacheInfo *source_info, ExceptionInfo *exception)
MagickExport void	CloneCacheMethods (Cache clone, const Cache cache)
static void	RelinquishCachePixels (CacheInfo *cache_info)
MagickExport Cache	DestroyCacheInfo (Cache cache)
static void	RelinquishNexusPixels (NexusInfo *nexus_info)
MagickExport void	DestroyCacheNexus (Cache cache, const unsigned long nexus)
MagickExport void	DestroyCacheResources (void)
MagickExport void	DestroyImagePixels (Image *image)
MagickExport ClassType	GetCacheClass (const Cache cache)
MagickExport ColorspaceType	GetCacheColorspace (const Cache cache)
MagickExport MagickBooleanType	GetCacheInfo (Cache *cache)
MagickExport void	GetCacheMethods (CacheMethods *cache_methods)
MagickExport PixelPacket *	GetCacheNexus (Image *image, const long x, const long y, const unsigned long columns, const unsigned long rows, const unsigned long nexus)
MagickExport VirtualPixelMethod	GetCacheVirtualPixelMethod (const Image *image)
MagickExport PixelPacket *	GetImagePixels (Image *image, const long x, const long y, const unsigned long columns, const unsigned long rows)
MagickExport IndexPacket *	GetIndexes (const Image *image)
MagickExport unsigned long	GetNexus (Cache cache)
MagickExport IndexPacket *	GetNexusIndexes (const Cache cache, const unsigned long nexus)
MagickExport PixelPacket *	GetNexusPixels (const Cache cache, const unsigned long nexus)
MagickExport PixelPacket	GetOnePixel (Image *image, const long x, const long y)
MagickExport PixelPacket *	GetPixels (const Image *image)
MagickExport MagickSizeType	GetPixelCacheArea (const Image *image)
static void	MagickPixelCompositeMask (const MagickPixelPacket *p, const MagickRealType alpha, const MagickPixelPacket *q, const MagickRealType beta, MagickPixelPacket *composite)
static MagickBooleanType	MaskCacheNexus (Image *image, const unsigned long nexus)
static MagickBooleanType	ModifyCache (Image *image, const unsigned long nexus)
static void	AcquireCachePixels (CacheInfo *cache_info)
static MagickBooleanType	ExtendCache (Image *image, MagickSizeType length)
MagickExport MagickBooleanType	PersistCache (Image *image, const char *filename, const MagickBooleanType attach, MagickOffsetType *offset, ExceptionInfo *exception)
MagickExport Cache	ReferenceCache (Cache cache)
MagickExport void	SetCacheMethods (Cache cache, CacheMethods *cache_methods)
MagickExport PixelPacket *	SetCacheNexus (Image *image, const long x, const long y, const unsigned long columns, const unsigned long rows, const unsigned long nexus)
MagickExport VirtualPixelMethod	SetCacheVirtualPixelMethod (const Image *image, const VirtualPixelMethod virtual_pixel_method)
MagickExport PixelPacket *	SetImagePixels (Image *image, const long x, const long y, const unsigned long columns, const unsigned long rows)
MagickExport MagickBooleanType	SyncCacheNexus (Image *image, const unsigned long nexus)
MagickExport MagickBooleanType	SyncImagePixels (Image *image)
Variables
static MagickSizeType	serial_number = 0
static SemaphoreInfo *	cache_semaphore = (SemaphoreInfo *) NULL
static SplayTreeInfo *	cache_resources = (SplayTreeInfo *) NULL
static long	DitherMatrix [64]

---

Define Documentation

#define DefaultNumberCacheViews   8UL

---

Function Documentation

MagickExport const PixelPacket* AcquireCacheNexus	(	const Image *	image,
		const VirtualPixelMethod	virtual_pixel_method,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows,
		const unsigned long	nexus,
		ExceptionInfo *	exception
	)

static void AcquireCachePixels

(

CacheInfo *

cache_info

)

[inline, static]

MagickExport const PixelPacket* AcquireImagePixels	(	const Image *	image,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows,
		ExceptionInfo *	exception
	)

MagickExport const IndexPacket* AcquireIndexes

(

const Image *

image

)

static const IndexPacket* AcquireIndexesFromCache

(

const Image *

image

)

[static]

MagickExport const IndexPacket* AcquireNexusIndexes	(	const Cache	cache,
		const unsigned long	nexus
	)

static void AcquireNexusPixels

(

NexusInfo *

nexus_info

)

[inline, static]

MagickExport MagickPixelPacket AcquireOneMagickPixel	(	const Image *	image,
		const long	x,
		const long	y,
		ExceptionInfo *	exception
	)

MagickExport PixelPacket AcquireOnePixel	(	const Image *	image,
		const long	x,
		const long	y,
		ExceptionInfo *	exception
	)

static PixelPacket AcquireOnePixelFromCache	(	const Image *	image,
		const	VirtualPixelMethod,
		const	long,
		const	long,
		ExceptionInfo *	exception
	)			[static]

MagickExport PixelPacket AcquireOneVirtualPixel	(	const Image *	image,
		const VirtualPixelMethod	virtual_pixel_method,
		const long	x,
		const long	y,
		ExceptionInfo *	exception
	)

static const PixelPacket * AcquirePixelCache	(	const Image *	image,
		const	VirtualPixelMethod,
		const	long,
		const	long,
		const unsigned long	columns,
		const unsigned long	rows,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType ClipCacheNexus	(	Image *	image,
		const unsigned long	nexus
	)			[static]

MagickExport void CloneCacheMethods	(	Cache	clone,
		const Cache	cache
	)

static MagickBooleanType CloneCacheNexus	(	CacheInfo *	destination,
		CacheInfo *	source,
		const unsigned long	nexus
	)			[static]

static MagickBooleanType CloneDiskToDiskPixels	(	CacheInfo *	cache_info,
		CacheInfo *	source_info,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType CloneDiskToMemoryPixels	(	CacheInfo *	cache_info,
		CacheInfo *	source_info,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType CloneMemoryToDiskPixels	(	CacheInfo *	cache_info,
		CacheInfo *	source_info,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType CloneMemoryToMemoryPixels	(	CacheInfo *	cache_info,
		CacheInfo *	source_info,
		ExceptionInfo *	magick_unused(exception)
	)			[static]

static MagickBooleanType ClonePixelCache	(	CacheInfo *	cache_info,
		CacheInfo *	source_info,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType CloseDiskCache

(

CacheInfo *

cache_info

)

[static]

MagickExport Cache DestroyCacheInfo

(

Cache

cache

)

MagickExport void DestroyCacheNexus	(	Cache	cache,
		const unsigned long	nexus
	)

MagickExport void DestroyCacheResources

(

void

)

MagickExport void DestroyImagePixels

(

Image *

image

)

static void DestroyPixelCache

(

Image *

image

)

[static]

static long DitherX	(	const unsigned long	columns,
		const long	x
	)			[inline, static]

static long DitherY	(	const unsigned long	rows,
		const long	y
	)			[inline, static]

static long EdgeX	(	const unsigned long	columns,
		const long	x
	)			[inline, static]

static long EdgeY	(	const unsigned long	rows,
		const long	y
	)			[inline, static]

static MagickBooleanType ExtendCache	(	Image *	image,
		MagickSizeType	length
	)			[static]

MagickExport ClassType GetCacheClass

(

const Cache

cache

)

MagickExport ColorspaceType GetCacheColorspace

(

const Cache

cache

)

MagickExport MagickBooleanType GetCacheInfo

(

Cache *

cache

)

MagickExport void GetCacheMethods

(

CacheMethods *

cache_methods

)

MagickExport PixelPacket* GetCacheNexus	(	Image *	image,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows,
		const unsigned long	nexus
	)

static unsigned long GetCacheThreadId

(

void

)

[static]

MagickExport VirtualPixelMethod GetCacheVirtualPixelMethod

(

const Image *

image

)

MagickExport PixelPacket* GetImagePixels	(	Image *	image,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows
	)

MagickExport IndexPacket* GetIndexes

(

const Image *

image

)

static IndexPacket * GetIndexesFromCache

(

const Image *

image

)

[static]

MagickExport unsigned long GetNexus

(

Cache

cache

)

MagickExport IndexPacket* GetNexusIndexes	(	const Cache	cache,
		const unsigned long	nexus
	)

MagickExport PixelPacket* GetNexusPixels	(	const Cache	cache,
		const unsigned long	nexus
	)

MagickExport PixelPacket GetOnePixel	(	Image *	image,
		const long	x,
		const long	y
	)

static PixelPacket GetOnePixelFromCache	(	Image *	image,
		const	long,
		const	long
	)

static PixelPacket * GetPixelCache	(	Image *	image,
		const	long,
		const	long,
		const unsigned long	columns,
		const unsigned long	rows
	)

MagickExport MagickSizeType GetPixelCacheArea

(

const Image *

image

)

MagickExport PixelPacket* GetPixels

(

const Image *

image

)

static PixelPacket * GetPixelsFromCache

(

const Image *

image

)

static MagickBooleanType IsNexusInCore	(	const CacheInfo *	cache_info,
		const unsigned long	nexus
	)			[inline, static]

static void LimitOpenCacheDescriptors

(

void

)

[static]

static MagickSizeType MagickMax	(	const MagickSizeType	x,
		const MagickSizeType	y
	)			[inline, static]

static MagickSizeType MagickMin	(	const MagickSizeType	x,
		const MagickSizeType	y
	)			[inline, static]

static void MagickPixelCompositeMask	(	const MagickPixelPacket *	p,
		const MagickRealType	alpha,
		const MagickPixelPacket *	q,
		const MagickRealType	beta,
		MagickPixelPacket *	composite
	)			[inline, static]

static MagickBooleanType MaskCacheNexus	(	Image *	image,
		const unsigned long	nexus
	)			[static]

static long MirrorX	(	const unsigned long	columns,
		const long	x
	)			[inline, static]

static long MirrorY	(	const unsigned long	rows,
		const long	y
	)			[inline, static]

static MagickBooleanType ModifyCache	(	Image *	image,
		const unsigned long	nexus
	)			[static]

static MagickBooleanType OpenCache	(	Image *	image,
		const	MapMode,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType OpenDiskCache	(	CacheInfo *	cache_info,
		MapMode	mode
	)			[static]

MagickExport MagickBooleanType PersistCache	(	Image *	image,
		const char *	filename,
		const MagickBooleanType	attach,
		MagickOffsetType *	offset,
		ExceptionInfo *	exception
	)

static long RandomX

(

const unsigned long

columns

)

[inline, static]

static long RandomY

(

const unsigned long

rows

)

[inline, static]

static MagickBooleanType ReadCacheIndexes	(	CacheInfo *	cache_info,
		const unsigned long	nexus,
		ExceptionInfo *	exception
	)			[static]

static MagickBooleanType ReadCachePixels	(	CacheInfo *	cache_info,
		const unsigned long	nexus,
		ExceptionInfo *	exception
	)

static MagickOffsetType ReadCacheRegion	(	int	file,
		unsigned char *	buffer,
		MagickSizeType	length,
		MagickOffsetType	offset
	)			[inline, static]

MagickExport Cache ReferenceCache

(

Cache

cache

)

static void RelinquishCachePixels

(

CacheInfo *

cache_info

)

[inline, static]

static void RelinquishNexusPixels

(

NexusInfo *

nexus_info

)

[inline, static]

MagickExport void SetCacheMethods	(	Cache	cache,
		CacheMethods *	cache_methods
	)

MagickExport PixelPacket* SetCacheNexus	(	Image *	image,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows,
		const unsigned long	nexus
	)

MagickExport VirtualPixelMethod SetCacheVirtualPixelMethod	(	const Image *	image,
		const VirtualPixelMethod	virtual_pixel_method
	)

MagickExport PixelPacket* SetImagePixels	(	Image *	image,
		const long	x,
		const long	y,
		const unsigned long	columns,
		const unsigned long	rows
	)

static PixelPacket * SetNexus	(	const Image *	image,
		const RectangleInfo *	region,
		const unsigned long	nexus
	)			[static]

static PixelPacket * SetPixelCache	(	Image *	image,
		const	long,
		const	long,
		const unsigned long	columns,
		const unsigned long	rows
	)

static MagickBooleanType SyncCache

(

Image *

image

)

MagickExport MagickBooleanType SyncCacheNexus	(	Image *	image,
		const unsigned long	nexus
	)

MagickExport MagickBooleanType SyncImagePixels

(

Image *

image

)

static MagickBooleanType SyncPixelCache

(

Image *

image

)

static long TileX	(	const unsigned long	columns,
		const long	x
	)			[inline, static]

static long TileY	(	const unsigned long	rows,
		const long	y
	)			[inline, static]

static MagickBooleanType WriteCacheIndexes	(	CacheInfo *	cache_info,
		const unsigned long	nexus,
		ExceptionInfo *	exception
	)

static MagickBooleanType WriteCachePixels	(	CacheInfo *	cache_info,
		const unsigned long	nexus,
		ExceptionInfo *	exception
	)

static MagickOffsetType WriteCacheRegion	(	int	file,
		const unsigned char *	buffer,
		MagickSizeType	length,
		MagickOffsetType	offset
	)			[inline, static]

---

Variable Documentation

SplayTreeInfo* cache_resources = (SplayTreeInfo *) NULL [static]

SemaphoreInfo* cache_semaphore = (SemaphoreInfo *) NULL [static]

long DitherMatrix[64] [static]

Initial value:

  {
     0,  48,  12,  60,   3,  51,  15,  63,
    32,  16,  44,  28,  35,  19,  47,  31,
     8,  56,   4,  52,  11,  59,   7,  55,
    40,  24,  36,  20,  43,  27,  39,  23,
     2,  50,  14,  62,   1,  49,  13,  61,
    34,  18,  46,  30,  33,  17,  45,  29,
    10,  58,   6,  54,   9,  57,   5,  53,
    42,  26,  38,  22,  41,  25,  37,  21
  }

MagickSizeType serial_number = 0 [static]

---