/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- AcquireCacheView
- CloneCacheView
- DestroyCacheView
- GetCacheViewColorspace
- GetCacheViewException
- GetCacheViewExtent
- GetCacheViewStorageClass
- GetCacheViewAuthenticPixels
- GetOneCacheViewAuthenticPixel
- GetCacheViewAuthenticIndexQueue
- GetCacheViewAuthenticPixelQueue
- GetCacheViewVirtualIndexQueue
- GetCacheViewVirtualPixelQueue
- GetCacheViewVirtualPixels
- GetOneCacheViewVirtualPixel
- GetOneCacheViewVirtualMethodPixel
- QueueCacheViewAuthenticPixels
- SetCacheViewStorageClass
- SetCacheViewVirtualPixelMethod
- SyncCacheViewAuthenticPixels
/*
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% %
% %
% %
% CCCC AAA CCCC H H EEEEE %
% C A A C H H E %
% C AAAAA C HHHHH EEE %
% C A A C H H E %
% CCCC A A CCCC H H EEEEE %
% %
% V V IIIII EEEEE W W %
% V V I E W W %
% V V I EEE W W W %
% V V I E WW WW %
% V IIIII EEEEE W W %
% %
% %
% MagickCore Cache View Methods %
% %
% Software Design %
% John Cristy %
% February 2000 %
% %
% %
% Copyright 1999-2011 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. You may %
% 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. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/cache.h"
#include "magick/cache-private.h"
#include "magick/cache-view.h"
#include "magick/memory_.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/string_.h"
#include "magick/thread-private.h"
/*
Typedef declarations.
*/
struct _CacheView
{
Image
*image;
VirtualPixelMethod
virtual_pixel_method;
size_t
number_threads;
NexusInfo
**nexus_info;
MagickBooleanType
debug;
size_t
signature;
};
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% A c q u i r e C a c h e V i e w %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% AcquireCacheView() acquires a view into the pixel cache, using the
% VirtualPixelMethod that is defined within the given image itself.
%
% The format of the AcquireCacheView method is:
%
% CacheView *AcquireCacheView(const Image *image)
%
% A description of each parameter follows:
%
% o image: the image.
%
*/
MagickExport CacheView *AcquireCacheView(const Image *image)
{
CacheView
*cache_view;
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
cache_view=(CacheView *) AcquireMagickMemory(sizeof(*cache_view));
if (cache_view == (CacheView *) NULL)
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
(void) ResetMagickMemory(cache_view,0,sizeof(*cache_view));
cache_view->image=ReferenceImage((Image *) image);
cache_view->number_threads=GetOpenMPMaximumThreads();
cache_view->nexus_info=AcquirePixelCacheNexus(cache_view->number_threads);
cache_view->virtual_pixel_method=GetImageVirtualPixelMethod(image);
cache_view->debug=IsEventLogging();
cache_view->signature=MagickSignature;
if (cache_view->nexus_info == (NexusInfo **) NULL)
ThrowFatalException(CacheFatalError,"UnableToAcquireCacheView");
return(cache_view);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
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% %
% C l o n e C a c h e V i e w %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% CloneCacheView() makes an exact copy of the specified cache view.
%
% The format of the CloneCacheView method is:
%
% CacheView *CloneCacheView(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport CacheView *CloneCacheView(const CacheView *cache_view)
{
CacheView
*clone_view;
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
clone_view=(CacheView *) AcquireMagickMemory(sizeof(*clone_view));
if (clone_view == (CacheView *) NULL)
ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
(void) ResetMagickMemory(clone_view,0,sizeof(*clone_view));
clone_view->image=ReferenceImage(cache_view->image);
clone_view->number_threads=cache_view->number_threads;
clone_view->nexus_info=AcquirePixelCacheNexus(cache_view->number_threads);
clone_view->virtual_pixel_method=cache_view->virtual_pixel_method;
clone_view->debug=cache_view->debug;
clone_view->signature=MagickSignature;
return(clone_view);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
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% D e s t r o y C a c h e V i e w %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DestroyCacheView() destroys the specified view returned by a previous call
% to AcquireCacheView().
%
% The format of the DestroyCacheView method is:
%
% CacheView *DestroyCacheView(CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport CacheView *DestroyCacheView(CacheView *cache_view)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
if (cache_view->nexus_info != (NexusInfo **) NULL)
cache_view->nexus_info=DestroyPixelCacheNexus(cache_view->nexus_info,
cache_view->number_threads);
cache_view->image=DestroyImage(cache_view->image);
cache_view->signature=(~MagickSignature);
cache_view=(CacheView *) RelinquishMagickMemory(cache_view);
return(cache_view);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% G e t C a c h e V i e w C o l o r s p a c e %
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% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewColorspace() returns the image colorspace associated with the
% specified view.
%
% The format of the GetCacheViewColorspace method is:
%
% ColorspaceType GetCacheViewColorspace(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport ColorspaceType GetCacheViewColorspace(const CacheView *cache_view)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
return(cache_view->image->colorspace);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
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% G e t C a c h e V i e w E x c e p t i o n %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewException() returns the image exception associated with the
% specified view.
%
% The format of the GetCacheViewException method is:
%
% ExceptionInfo GetCacheViewException(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport ExceptionInfo *GetCacheViewException(const CacheView *cache_view)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
return(&cache_view->image->exception);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
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% %
+ G e t C a c h e V i e w E x t e n t %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewExtent() returns the extent of the pixels associated with the
% last call to QueueCacheViewAuthenticPixels() or
% GetCacheViewAuthenticPixels().
%
% The format of the GetCacheViewExtent() method is:
%
% MagickSizeType GetCacheViewExtent(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport MagickSizeType GetCacheViewExtent(const CacheView *cache_view)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
assert(cache_view->image->cache != (Cache) NULL);
assert(id < (int) cache_view->number_threads);
return(GetPixelCacheNexusExtent(cache_view->image->cache,
cache_view->nexus_info[id]));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t C a c h e V i e w S t o r a g e C l a s s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewStorageClass() returns the image storage class associated with
% the specified view.
%
% The format of the GetCacheViewStorageClass method is:
%
% ClassType GetCacheViewStorageClass(const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport ClassType GetCacheViewStorageClass(const CacheView *cache_view)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
return(cache_view->image->storage_class);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t C a c h e V i e w A u t h e n t i c P i x e l s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewAuthenticPixels() gets pixels from the in-memory or disk pixel
% cache as defined by the geometry parameters. A pointer to the pixels is
% returned if the pixels are transferred, otherwise a NULL is returned.
%
% The format of the GetCacheViewAuthenticPixels method is:
%
% PixelPacket *GetCacheViewAuthenticPixels(CacheView *cache_view,
% const ssize_t x,const ssize_t y,const size_t columns,
% const size_t rows,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o x,y,columns,rows: These values define the perimeter of a region of
% pixels.
%
*/
MagickExport PixelPacket *GetCacheViewAuthenticPixels(CacheView *cache_view,
const ssize_t x,const ssize_t y,const size_t columns,const size_t rows,
ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(id < (int) cache_view->number_threads);
return(GetAuthenticPixelCacheNexus(cache_view->image,x,y,columns,rows,
cache_view->nexus_info[id],exception));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t O n e C a c h e V i e w A u t h e n t i c P i x e l %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetOneCacheViewAuthenticPixel() returns a single pixel at the specified (x,y)
% location. The image background color is returned if an error occurs.
%
% The format of the GetOneCacheViewAuthenticPixel method is:
%
% MagickBooleaNType GetOneCacheViewAuthenticPixel(
% const CacheView *cache_view,const ssize_t x,const ssize_t y,
% Pixelpacket *pixel,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o x,y: These values define the offset of the pixel.
%
% o pixel: return a pixel at the specified (x,y) location.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType GetOneCacheViewAuthenticPixel(
const CacheView *cache_view,const ssize_t x,const ssize_t y,
PixelPacket *pixel,ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
PixelPacket
*pixels;
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
*pixel=cache_view->image->background_color;
assert(id < (int) cache_view->number_threads);
pixels=GetAuthenticPixelCacheNexus(cache_view->image,x,y,1,1,
cache_view->nexus_info[id],exception);
if (pixels == (const PixelPacket *) NULL)
return(MagickFalse);
*pixel=(*pixels);
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t C a c h e V i e w A u t h e n t i c I n d e x Q u e u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewAuthenticIndexQueue() returns the indexes associated with the
% last call to SetCacheViewIndexes() or GetCacheViewAuthenticIndexQueue(). The
% indexes are authentic and can be updated.
%
% The format of the GetCacheViewAuthenticIndexQueue() method is:
%
% IndexPacket *GetCacheViewAuthenticIndexQueue(CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport IndexPacket *GetCacheViewAuthenticIndexQueue(CacheView *cache_view)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(cache_view->image->cache != (Cache) NULL);
assert(id < (int) cache_view->number_threads);
return(GetPixelCacheNexusIndexes(cache_view->image->cache,
cache_view->nexus_info[id]));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t C a c h e V i e w A u t h e n t i c P i x e l Q u e u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewAuthenticPixelQueue() returns the pixels associated with the
% last call to QueueCacheViewAuthenticPixels() or
% GetCacheViewAuthenticPixels(). The pixels are authentic and therefore can be
% updated.
%
% The format of the GetCacheViewAuthenticPixelQueue() method is:
%
% PixelPacket *GetCacheViewAuthenticPixelQueue(CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport PixelPacket *GetCacheViewAuthenticPixelQueue(CacheView *cache_view)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(cache_view->image->cache != (Cache) NULL);
assert(id < (int) cache_view->number_threads);
return(GetPixelCacheNexusPixels(cache_view->image->cache,
cache_view->nexus_info[id]));
}
/*
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% %
% %
% %
% G e t C a c h e V i e w V i r t u a l I n d e x Q u e u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewVirtualIndexQueue() returns the indexes associated with the
% last call to GetCacheViewVirtualIndexQueue(). The indexes are virtual and
% therefore cannot be updated.
%
% The format of the GetCacheViewVirtualIndexQueue() method is:
%
% const IndexPacket *GetCacheViewVirtualIndexQueue(
% const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport const IndexPacket *GetCacheViewVirtualIndexQueue(
const CacheView *cache_view)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (const CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(cache_view->image->cache != (Cache) NULL);
assert(id < (int) cache_view->number_threads);
return(GetVirtualIndexesFromNexus(cache_view->image->cache,
cache_view->nexus_info[id]));
}
/*
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% %
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% %
% G e t C a c h e V i e w V i r t u a l P i x e l Q u e u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewVirtualPixelQueue() returns the the pixels associated with
% the last call to GetCacheViewVirtualPixels(). The pixels are virtual
% and therefore cannot be updated.
%
% The format of the GetCacheViewVirtualPixelQueue() method is:
%
% const PixelPacket *GetCacheViewVirtualPixelQueue(
% const CacheView *cache_view)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
*/
MagickExport const PixelPacket *GetCacheViewVirtualPixelQueue(
const CacheView *cache_view)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (const CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(cache_view->image->cache != (Cache) NULL);
assert(id < (int) cache_view->number_threads);
return(GetVirtualPixelsNexus(cache_view->image->cache,
cache_view->nexus_info[id]));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t C a c h e V i e w V i r t u a l P i x e l s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetCacheViewVirtualPixels() gets virtual pixels from the in-memory or
% disk pixel cache as defined by the geometry parameters. A pointer to the
% pixels is returned if the pixels are transferred, otherwise a NULL is
% returned.
%
% The format of the GetCacheViewVirtualPixels method is:
%
% const PixelPacket *GetCacheViewVirtualPixels(
% const CacheView *cache_view,const ssize_t x,const ssize_t y,
% const size_t columns,const size_t rows,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o x,y,columns,rows: These values define the perimeter of a region of
% pixels.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport const PixelPacket *GetCacheViewVirtualPixels(
const CacheView *cache_view,const ssize_t x,const ssize_t y,
const size_t columns,const size_t rows,ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(id < (int) cache_view->number_threads);
return(GetVirtualPixelsFromNexus(cache_view->image,
cache_view->virtual_pixel_method,x,y,columns,rows,
cache_view->nexus_info[id],exception));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t O n e C a c h e V i e w V i r t u a l P i x e l %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetOneCacheViewVirtualPixel() returns a single pixel at the specified (x,y)
% location. The image background color is returned if an error occurs. If
% you plan to modify the pixel, use GetOneCacheViewAuthenticPixel() instead.
%
% The format of the GetOneCacheViewVirtualPixel method is:
%
% MagickBooleanType GetOneCacheViewVirtualPixel(
% const CacheView *cache_view,const ssize_t x,const ssize_t y,
% PixelPacket *pixel,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o x,y: These values define the offset of the pixel.
%
% o pixel: return a pixel at the specified (x,y) location.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType GetOneCacheViewVirtualPixel(
const CacheView *cache_view,const ssize_t x,const ssize_t y,
PixelPacket *pixel,ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
const PixelPacket
*pixels;
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
*pixel=cache_view->image->background_color;
assert(id < (int) cache_view->number_threads);
pixels=GetVirtualPixelsFromNexus(cache_view->image,
cache_view->virtual_pixel_method,x,y,1,1,cache_view->nexus_info[id],
exception);
if (pixels == (const PixelPacket *) NULL)
return(MagickFalse);
*pixel=(*pixels);
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% G e t O n e C a c h e V i e w V i r t u a l P i x e l %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% GetOneCacheViewVirtualMethodPixel() returns a single virtual pixel at
% the specified (x,y) location. The image background color is returned if an
% error occurs. If you plan to modify the pixel, use
% GetOneCacheViewAuthenticPixel() instead.
%
% The format of the GetOneCacheViewVirtualPixel method is:
%
% MagickBooleanType GetOneCacheViewVirtualMethodPixel(
% const CacheView *cache_view,
% const VirtualPixelMethod virtual_pixel_method,const ssize_t x,
% const ssize_t y,PixelPacket *pixel,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o virtual_pixel_method: the virtual pixel method.
%
% o x,y: These values define the offset of the pixel.
%
% o pixel: return a pixel at the specified (x,y) location.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType GetOneCacheViewVirtualMethodPixel(
const CacheView *cache_view,const VirtualPixelMethod virtual_pixel_method,
const ssize_t x,const ssize_t y,PixelPacket *pixel,ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
const PixelPacket
*pixels;
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
*pixel=cache_view->image->background_color;
assert(id < (int) cache_view->number_threads);
pixels=GetVirtualPixelsFromNexus(cache_view->image,virtual_pixel_method,x,y,1,
1,cache_view->nexus_info[id],exception);
if (pixels == (const PixelPacket *) NULL)
return(MagickFalse);
*pixel=(*pixels);
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% Q u e u e C a c h e V i e w A u t h e n t i c P i x e l s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% QueueCacheViewAuthenticPixels() queues authentic pixels from the in-memory or
% disk pixel cache as defined by the geometry parameters. A pointer to the
% pixels is returned if the pixels are transferred, otherwise a NULL is
% returned.
%
% The format of the QueueCacheViewAuthenticPixels method is:
%
% PixelPacket *QueueCacheViewAuthenticPixels(CacheView *cache_view,
% const ssize_t x,const ssize_t y,const size_t columns,
% const size_t rows,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o x,y,columns,rows: These values define the perimeter of a region of
% pixels.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport PixelPacket *QueueCacheViewAuthenticPixels(CacheView *cache_view,
const ssize_t x,const ssize_t y,const size_t columns,const size_t rows,
ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(id < (int) cache_view->number_threads);
return(QueueAuthenticNexus(cache_view->image,x,y,columns,rows,
cache_view->nexus_info[id],exception));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% S e t C a c h e V i e w S t o r a g e C l a s s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SetCacheViewStorageClass() sets the image storage class associated with
% the specified view.
%
% The format of the SetCacheViewStorageClass method is:
%
% MagickBooleanType SetCacheViewStorageClass(CacheView *cache_view,
% const ClassType storage_class)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o storage_class: the image storage class: PseudoClass or DirectClass.
%
*/
MagickExport MagickBooleanType SetCacheViewStorageClass(CacheView *cache_view,
const ClassType storage_class)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
return(SetImageStorageClass(cache_view->image,storage_class));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% S e t C a c h e V i e w V i r t u a l P i x e l M e t h o d %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SetCacheViewVirtualPixelMethod() sets the virtual pixel method associated
% with the specified cache view.
%
% The format of the SetCacheViewVirtualPixelMethod method is:
%
% MagickBooleanType SetCacheViewVirtualPixelMethod(CacheView *cache_view,
% const VirtualPixelMethod virtual_pixel_method)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o virtual_pixel_method: the virtual pixel method.
%
*/
MagickExport MagickBooleanType SetCacheViewVirtualPixelMethod(
CacheView *cache_view,const VirtualPixelMethod virtual_pixel_method)
{
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
if (cache_view->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
cache_view->image->filename);
cache_view->virtual_pixel_method=virtual_pixel_method;
return(MagickTrue);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% S y n c C a c h e V i e w A u t h e n t i c P i x e l s %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SyncCacheViewAuthenticPixels() saves the cache view pixels to the in-memory
% or disk cache. It returns MagickTrue if the pixel region is flushed,
% otherwise MagickFalse.
%
% The format of the SyncCacheViewAuthenticPixels method is:
%
% MagickBooleanType SyncCacheViewAuthenticPixels(CacheView *cache_view,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o cache_view: the cache view.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType SyncCacheViewAuthenticPixels(
CacheView *cache_view,ExceptionInfo *exception)
{
const int
id = GetOpenMPThreadId();
assert(cache_view != (CacheView *) NULL);
assert(cache_view->signature == MagickSignature);
assert(id < (int) cache_view->number_threads);
return(SyncAuthenticPixelCacheNexus(cache_view->image,
cache_view->nexus_info[id],exception));
}