| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % IIIII M M AAA GGGG EEEEE % |
| % I MM MM A A G E % |
| % I M M M AAAAA G GG EEE % |
| % I M M A A G G E % |
| % IIIII M M A A GGGG 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 Image View Methods % |
| % % |
| % Software Design % |
| % John Cristy % |
| % March 2003 % |
| % % |
| % % |
| % 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/MagickCore.h" |
| #include "magick/exception-private.h" |
| #include "magick/monitor-private.h" |
| #include "magick/thread-private.h" |
| |
| /* |
| Typedef declarations. |
| */ |
| struct _ImageView |
| { |
| char |
| *description; |
| |
| RectangleInfo |
| extent; |
| |
| Image |
| *image; |
| |
| CacheView |
| *view; |
| |
| size_t |
| number_threads; |
| |
| ExceptionInfo |
| *exception; |
| |
| MagickBooleanType |
| debug; |
| |
| size_t |
| signature; |
| }; |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % C l o n e I m a g e V i e w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % CloneImageView() makes a copy of the specified image view. |
| % |
| % The format of the CloneImageView method is: |
| % |
| % ImageView *CloneImageView(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport ImageView *CloneImageView(const ImageView *image_view) |
| { |
| ImageView |
| *clone_view; |
| |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| clone_view=(ImageView *) AcquireMagickMemory(sizeof(*clone_view)); |
| if (clone_view == (ImageView *) NULL) |
| ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| (void) ResetMagickMemory(clone_view,0,sizeof(*clone_view)); |
| clone_view->description=ConstantString(image_view->description); |
| clone_view->extent=image_view->extent; |
| clone_view->view=CloneCacheView(image_view->view); |
| clone_view->number_threads=image_view->number_threads; |
| clone_view->exception=AcquireExceptionInfo(); |
| InheritException(clone_view->exception,image_view->exception); |
| clone_view->debug=image_view->debug; |
| clone_view->signature=MagickSignature; |
| return(clone_view); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % D e s t r o y I m a g e V i e w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % DestroyImageView() deallocates memory associated with a image view. |
| % |
| % The format of the DestroyImageView method is: |
| % |
| % ImageView *DestroyImageView(ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport ImageView *DestroyImageView(ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| if (image_view->description != (char *) NULL) |
| image_view->description=DestroyString(image_view->description); |
| image_view->view=DestroyCacheView(image_view->view); |
| image_view->exception=DestroyExceptionInfo(image_view->exception); |
| image_view->signature=(~MagickSignature); |
| image_view=(ImageView *) RelinquishMagickMemory(image_view); |
| return(image_view); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % D u p l e x T r a n s f e r I m a g e V i e w I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % DuplexTransferImageViewIterator() iterates over three image views in |
| % parallel and calls your transfer method for each scanline of the view. The |
| % source and duplex pixel extent is not confined to the image canvas-- that is |
| % you can include negative offsets or widths or heights that exceed the image |
| % dimension. However, the destination image view is confined to the image |
| % canvas-- that is no negative offsets or widths or heights that exceed the |
| % image dimension are permitted. |
| % |
| % The callback signature is: |
| % |
| % MagickBooleanType DuplexTransferImageViewMethod(const ImageView *source, |
| % const ImageView *duplex,ImageView *destination,const ssize_t y, |
| % const int thread_id,void *context) |
| % |
| % Use this pragma if the view is not single threaded: |
| % |
| % #pragma omp critical |
| % |
| % to define a section of code in your callback transfer method that must be |
| % executed by a single thread at a time. |
| % |
| % The format of the DuplexTransferImageViewIterator method is: |
| % |
| % MagickBooleanType DuplexTransferImageViewIterator(ImageView *source, |
| % ImageView *duplex,ImageView *destination, |
| % DuplexTransferImageViewMethod transfer,void *context) |
| % |
| % A description of each parameter follows: |
| % |
| % o source: the source image view. |
| % |
| % o duplex: the duplex image view. |
| % |
| % o destination: the destination image view. |
| % |
| % o transfer: the transfer callback method. |
| % |
| % o context: the user defined context. |
| % |
| */ |
| MagickExport MagickBooleanType DuplexTransferImageViewIterator( |
| ImageView *source,ImageView *duplex,ImageView *destination, |
| DuplexTransferImageViewMethod transfer,void *context) |
| { |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *destination_image, |
| *source_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(source != (ImageView *) NULL); |
| assert(source->signature == MagickSignature); |
| if (transfer == (DuplexTransferImageViewMethod) NULL) |
| return(MagickFalse); |
| source_image=source->image; |
| destination_image=destination->image; |
| if (SetImageStorageClass(destination_image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| status=MagickTrue; |
| progress=0; |
| exception=destination->exception; |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(source->number_threads) |
| #endif |
| for (y=source->extent.y; y < (ssize_t) source->extent.height; y++) |
| { |
| const int |
| id = GetOpenMPThreadId(); |
| |
| MagickBooleanType |
| sync; |
| |
| register const PixelPacket |
| *restrict duplex_pixels, |
| *restrict pixels; |
| |
| register PixelPacket |
| *restrict destination_pixels; |
| |
| if (status == MagickFalse) |
| continue; |
| pixels=GetCacheViewVirtualPixels(source->view,source->extent.x,y, |
| source->extent.width,1,source->exception); |
| if (pixels == (const PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| duplex_pixels=GetCacheViewVirtualPixels(duplex->view,duplex->extent.x,y, |
| duplex->extent.width,1,duplex->exception); |
| if (duplex_pixels == (const PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| destination_pixels=GetCacheViewAuthenticPixels(destination->view, |
| destination->extent.x,y,destination->extent.width,1,exception); |
| if (destination_pixels == (PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| if (transfer(source,duplex,destination,y,id,context) == MagickFalse) |
| status=MagickFalse; |
| sync=SyncCacheViewAuthenticPixels(destination->view,exception); |
| if (sync == MagickFalse) |
| { |
| InheritException(destination->exception,GetCacheViewException( |
| source->view)); |
| status=MagickFalse; |
| } |
| if (source_image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_DuplexTransferImageViewIterator) |
| #endif |
| proceed=SetImageProgress(source_image,source->description,progress++, |
| source->extent.height); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w A u t h e n t i c I n d e x e s % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewAuthenticIndexes() returns the image view authentic indexes. |
| % |
| % The format of the GetImageViewAuthenticPixels method is: |
| % |
| % IndexPacket *GetImageViewAuthenticIndexes(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport IndexPacket *GetImageViewAuthenticIndexes( |
| const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(GetCacheViewAuthenticIndexQueue(image_view->view)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w A u t h e n t i c P i x e l s % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewAuthenticPixels() returns the image view authentic pixels. |
| % |
| % The format of the GetImageViewAuthenticPixels method is: |
| % |
| % PixelPacket *GetImageViewAuthenticPixels(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport PixelPacket *GetImageViewAuthenticPixels( |
| const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(GetCacheViewAuthenticPixelQueue(image_view->view)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w E x c e p t i o n % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewException() returns the severity, reason, and description of any |
| % error that occurs when utilizing a image view. |
| % |
| % The format of the GetImageViewException method is: |
| % |
| % char *GetImageViewException(const PixelImage *image_view, |
| % ExceptionType *severity) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the pixel image_view. |
| % |
| % o severity: the severity of the error is returned here. |
| % |
| */ |
| MagickExport char *GetImageViewException(const ImageView *image_view, |
| ExceptionType *severity) |
| { |
| char |
| *description; |
| |
| assert(image_view != (const ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| assert(severity != (ExceptionType *) NULL); |
| *severity=image_view->exception->severity; |
| description=(char *) AcquireQuantumMemory(2UL*MaxTextExtent, |
| sizeof(*description)); |
| if (description == (char *) NULL) |
| ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| *description='\0'; |
| if (image_view->exception->reason != (char *) NULL) |
| (void) CopyMagickString(description,GetLocaleExceptionMessage( |
| image_view->exception->severity,image_view->exception->reason), |
| MaxTextExtent); |
| if (image_view->exception->description != (char *) NULL) |
| { |
| (void) ConcatenateMagickString(description," (",MaxTextExtent); |
| (void) ConcatenateMagickString(description,GetLocaleExceptionMessage( |
| image_view->exception->severity,image_view->exception->description), |
| MaxTextExtent); |
| (void) ConcatenateMagickString(description,")",MaxTextExtent); |
| } |
| return(description); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w E x t e n t % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewExtent() returns the image view extent. |
| % |
| % The format of the GetImageViewExtent method is: |
| % |
| % RectangleInfo GetImageViewExtent(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport RectangleInfo GetImageViewExtent(const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(image_view->extent); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewImage() returns the image associated with the image view. |
| % |
| % The format of the GetImageViewImage method is: |
| % |
| % MagickCore *GetImageViewImage(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport Image *GetImageViewImage(const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(image_view->image); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewIterator() iterates over the image view in parallel and calls |
| % your get method for each scanline of the view. The pixel extent is |
| % not confined to the image canvas-- that is you can include negative offsets |
| % or widths or heights that exceed the image dimension. Any updates to |
| % the pixels in your callback are ignored. |
| % |
| % The callback signature is: |
| % |
| % MagickBooleanType GetImageViewMethod(const ImageView *source, |
| % const ssize_t y,const int thread_id,void *context) |
| % |
| % Use this pragma if the view is not single threaded: |
| % |
| % #pragma omp critical |
| % |
| % to define a section of code in your callback get method that must be |
| % executed by a single thread at a time. |
| % |
| % The format of the GetImageViewIterator method is: |
| % |
| % MagickBooleanType GetImageViewIterator(ImageView *source, |
| % GetImageViewMethod get,void *context) |
| % |
| % A description of each parameter follows: |
| % |
| % o source: the source image view. |
| % |
| % o get: the get callback method. |
| % |
| % o context: the user defined context. |
| % |
| */ |
| MagickExport MagickBooleanType GetImageViewIterator(ImageView *source, |
| GetImageViewMethod get,void *context) |
| { |
| Image |
| *source_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(source != (ImageView *) NULL); |
| assert(source->signature == MagickSignature); |
| if (get == (GetImageViewMethod) NULL) |
| return(MagickFalse); |
| source_image=source->image; |
| status=MagickTrue; |
| progress=0; |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(source->number_threads) |
| #endif |
| for (y=source->extent.y; y < (ssize_t) source->extent.height; y++) |
| { |
| const int |
| id = GetOpenMPThreadId(); |
| |
| register const PixelPacket |
| *pixels; |
| |
| if (status == MagickFalse) |
| continue; |
| pixels=GetCacheViewVirtualPixels(source->view,source->extent.x,y, |
| source->extent.width,1,source->exception); |
| if (pixels == (const PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| if (get(source,y,id,context) == MagickFalse) |
| status=MagickFalse; |
| if (source_image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_GetImageViewIterator) |
| #endif |
| proceed=SetImageProgress(source_image,source->description,progress++, |
| source->extent.height); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w V i r t u a l I n d e x e s % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewVirtualIndexes() returns the image view virtual indexes. |
| % |
| % The format of the GetImageViewVirtualIndexes method is: |
| % |
| % const IndexPacket *GetImageViewVirtualIndexes( |
| % const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport const IndexPacket *GetImageViewVirtualIndexes( |
| const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(GetCacheViewVirtualIndexQueue(image_view->view)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % G e t I m a g e V i e w V i r t u a l P i x e l s % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetImageViewVirtualPixels() returns the image view virtual pixels. |
| % |
| % The format of the GetImageViewVirtualPixels method is: |
| % |
| % const PixelPacket *GetImageViewVirtualPixels(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport const PixelPacket *GetImageViewVirtualPixels( |
| const ImageView *image_view) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| return(GetCacheViewVirtualPixelQueue(image_view->view)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s I m a g e V i e w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsImageView() returns MagickTrue if the the parameter is verified as a image |
| % view object. |
| % |
| % The format of the IsImageView method is: |
| % |
| % MagickBooleanType IsImageView(const ImageView *image_view) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| */ |
| MagickExport MagickBooleanType IsImageView(const ImageView *image_view) |
| { |
| if (image_view == (const ImageView *) NULL) |
| return(MagickFalse); |
| if (image_view->signature != MagickSignature) |
| return(MagickFalse); |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % N e w I m a g e V i e w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % NewImageView() returns a image view required for all other methods in the |
| % Image View API. |
| % |
| % The format of the NewImageView method is: |
| % |
| % ImageView *NewImageView(MagickCore *wand) |
| % |
| % A description of each parameter follows: |
| % |
| % o wand: the wand. |
| % |
| */ |
| MagickExport ImageView *NewImageView(Image *image) |
| { |
| ImageView |
| *image_view; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| image_view=(ImageView *) AcquireMagickMemory(sizeof(*image_view)); |
| if (image_view == (ImageView *) NULL) |
| ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| (void) ResetMagickMemory(image_view,0,sizeof(*image_view)); |
| image_view->description=ConstantString("ImageView"); |
| image_view->image=image; |
| image_view->view=AcquireCacheView(image_view->image); |
| image_view->extent.width=image->columns; |
| image_view->extent.height=image->rows; |
| image_view->extent.x=0; |
| image_view->extent.y=0; |
| image_view->number_threads=GetOpenMPMaximumThreads(); |
| image_view->exception=AcquireExceptionInfo(); |
| image_view->debug=IsEventLogging(); |
| image_view->signature=MagickSignature; |
| return(image_view); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % N e w I m a g e V i e w R e g i o n % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % NewImageViewRegion() returns a image view required for all other methods |
| % in the Image View API. |
| % |
| % The format of the NewImageViewRegion method is: |
| % |
| % ImageView *NewImageViewRegion(MagickCore *wand,const ssize_t x, |
| % const ssize_t y,const size_t width,const size_t height) |
| % |
| % A description of each parameter follows: |
| % |
| % o wand: the magick wand. |
| % |
| % o x,y,columns,rows: These values define the perimeter of a extent of |
| % pixel_wands view. |
| % |
| */ |
| MagickExport ImageView *NewImageViewRegion(Image *image,const ssize_t x, |
| const ssize_t y,const size_t width,const size_t height) |
| { |
| ImageView |
| *image_view; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| image_view=(ImageView *) AcquireMagickMemory(sizeof(*image_view)); |
| if (image_view == (ImageView *) NULL) |
| ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| (void) ResetMagickMemory(image_view,0,sizeof(*image_view)); |
| image_view->description=ConstantString("ImageView"); |
| image_view->view=AcquireCacheView(image_view->image); |
| image_view->image=image; |
| image_view->extent.width=width; |
| image_view->extent.height=height; |
| image_view->extent.x=x; |
| image_view->extent.y=y; |
| image_view->number_threads=GetOpenMPMaximumThreads(); |
| image_view->exception=AcquireExceptionInfo(); |
| image_view->debug=IsEventLogging(); |
| image_view->signature=MagickSignature; |
| return(image_view); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % S e t I m a g e V i e w D e s c r i p t i o n % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % SetImageViewDescription() associates a description with an image view. |
| % |
| % The format of the SetImageViewDescription method is: |
| % |
| % void SetImageViewDescription(ImageView *image_view, |
| % const char *description) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| % o description: the image view description. |
| % |
| */ |
| MagickExport void SetImageViewDescription(ImageView *image_view, |
| const char *description) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| image_view->description=ConstantString(description); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % S e t I m a g e V i e w I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % SetImageViewIterator() iterates over the image view in parallel and calls |
| % your set method for each scanline of the view. The pixel extent is |
| % confined to the image canvas-- that is no negative offsets or widths or |
| % heights that exceed the image dimension. The pixels are initiallly |
| % undefined and any settings you make in the callback method are automagically |
| % synced back to your image. |
| % |
| % The callback signature is: |
| % |
| % MagickBooleanType SetImageViewMethod(ImageView *destination, |
| % const ssize_t y,const int thread_id,void *context) |
| % |
| % Use this pragma if the view is not single threaded: |
| % |
| % #pragma omp critical |
| % |
| % to define a section of code in your callback set method that must be |
| % executed by a single thread at a time. |
| % |
| % The format of the SetImageViewIterator method is: |
| % |
| % MagickBooleanType SetImageViewIterator(ImageView *destination, |
| % SetImageViewMethod set,void *context) |
| % |
| % A description of each parameter follows: |
| % |
| % o destination: the image view. |
| % |
| % o set: the set callback method. |
| % |
| % o context: the user defined context. |
| % |
| */ |
| MagickExport MagickBooleanType SetImageViewIterator(ImageView *destination, |
| SetImageViewMethod set,void *context) |
| { |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *destination_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(destination != (ImageView *) NULL); |
| assert(destination->signature == MagickSignature); |
| if (set == (SetImageViewMethod) NULL) |
| return(MagickFalse); |
| destination_image=destination->image; |
| if (SetImageStorageClass(destination_image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| status=MagickTrue; |
| progress=0; |
| exception=destination->exception; |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(destination->number_threads) |
| #endif |
| for (y=destination->extent.y; y < (ssize_t) destination->extent.height; y++) |
| { |
| const int |
| id = GetOpenMPThreadId(); |
| |
| MagickBooleanType |
| sync; |
| |
| register PixelPacket |
| *restrict pixels; |
| |
| if (status == MagickFalse) |
| continue; |
| pixels=GetCacheViewAuthenticPixels(destination->view,destination->extent.x, |
| y,destination->extent.width,1,exception); |
| if (pixels == (PixelPacket *) NULL) |
| { |
| InheritException(destination->exception,GetCacheViewException( |
| destination->view)); |
| status=MagickFalse; |
| continue; |
| } |
| if (set(destination,y,id,context) == MagickFalse) |
| status=MagickFalse; |
| sync=SyncCacheViewAuthenticPixels(destination->view,exception); |
| if (sync == MagickFalse) |
| { |
| InheritException(destination->exception,GetCacheViewException( |
| destination->view)); |
| status=MagickFalse; |
| } |
| if (destination_image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_SetImageViewIterator) |
| #endif |
| proceed=SetImageProgress(destination_image,destination->description, |
| progress++,destination->extent.height); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % S e t I m a g e V i e w T h r e a d s % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % SetImageViewThreads() sets the number of threads in a thread team. |
| % |
| % The format of the SetImageViewDescription method is: |
| % |
| % void SetImageViewThreads(ImageView *image_view, |
| % const size_t number_threads) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_view: the image view. |
| % |
| % o number_threads: the number of threads in a thread team. |
| % |
| */ |
| MagickExport void SetImageViewThreads(ImageView *image_view, |
| const size_t number_threads) |
| { |
| assert(image_view != (ImageView *) NULL); |
| assert(image_view->signature == MagickSignature); |
| image_view->number_threads=number_threads; |
| if (number_threads > GetOpenMPMaximumThreads()) |
| image_view->number_threads=GetOpenMPMaximumThreads(); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % T r a n s f e r I m a g e V i e w I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % TransferImageViewIterator() iterates over two image views in parallel and |
| % calls your transfer method for each scanline of the view. The source pixel |
| % extent is not confined to the image canvas-- that is you can include |
| % negative offsets or widths or heights that exceed the image dimension. |
| % However, the destination image view is confined to the image canvas-- that |
| % is no negative offsets or widths or heights that exceed the image dimension |
| % are permitted. |
| % |
| % The callback signature is: |
| % |
| % MagickBooleanType TransferImageViewMethod(const ImageView *source, |
| % ImageView *destination,const ssize_t y,const int thread_id, |
| % void *context) |
| % |
| % Use this pragma if the view is not single threaded: |
| % |
| % #pragma omp critical |
| % |
| % to define a section of code in your callback transfer method that must be |
| % executed by a single thread at a time. |
| % |
| % The format of the TransferImageViewIterator method is: |
| % |
| % MagickBooleanType TransferImageViewIterator(ImageView *source, |
| % ImageView *destination,TransferImageViewMethod transfer,void *context) |
| % |
| % A description of each parameter follows: |
| % |
| % o source: the source image view. |
| % |
| % o destination: the destination image view. |
| % |
| % o transfer: the transfer callback method. |
| % |
| % o context: the user defined context. |
| % |
| */ |
| MagickExport MagickBooleanType TransferImageViewIterator(ImageView *source, |
| ImageView *destination,TransferImageViewMethod transfer,void *context) |
| { |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *destination_image, |
| *source_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(source != (ImageView *) NULL); |
| assert(source->signature == MagickSignature); |
| if (transfer == (TransferImageViewMethod) NULL) |
| return(MagickFalse); |
| source_image=source->image; |
| destination_image=destination->image; |
| if (SetImageStorageClass(destination_image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| status=MagickTrue; |
| progress=0; |
| exception=destination->exception; |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(source->number_threads) |
| #endif |
| for (y=source->extent.y; y < (ssize_t) source->extent.height; y++) |
| { |
| const int |
| id = GetOpenMPThreadId(); |
| |
| MagickBooleanType |
| sync; |
| |
| register const PixelPacket |
| *restrict pixels; |
| |
| register PixelPacket |
| *restrict destination_pixels; |
| |
| if (status == MagickFalse) |
| continue; |
| pixels=GetCacheViewVirtualPixels(source->view,source->extent.x,y, |
| source->extent.width,1,source->exception); |
| if (pixels == (const PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| destination_pixels=GetCacheViewAuthenticPixels(destination->view, |
| destination->extent.x,y,destination->extent.width,1,exception); |
| if (destination_pixels == (PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| if (transfer(source,destination,y,id,context) == MagickFalse) |
| status=MagickFalse; |
| sync=SyncCacheViewAuthenticPixels(destination->view,exception); |
| if (sync == MagickFalse) |
| { |
| InheritException(destination->exception,GetCacheViewException( |
| source->view)); |
| status=MagickFalse; |
| } |
| if (source_image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_TransferImageViewIterator) |
| #endif |
| proceed=SetImageProgress(source_image,source->description,progress++, |
| source->extent.height); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U p d a t e I m a g e V i e w I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UpdateImageViewIterator() iterates over the image view in parallel and calls |
| % your update method for each scanline of the view. The pixel extent is |
| % confined to the image canvas-- that is no negative offsets or widths or |
| % heights that exceed the image dimension are permitted. Updates to pixels |
| % in your callback are automagically synced back to the image. |
| % |
| % The callback signature is: |
| % |
| % MagickBooleanType UpdateImageViewMethod(ImageView *source, |
| % const ssize_t y,const int thread_id,void *context) |
| % |
| % Use this pragma if the view is not single threaded: |
| % |
| % #pragma omp critical |
| % |
| % to define a section of code in your callback update method that must be |
| % executed by a single thread at a time. |
| % |
| % The format of the UpdateImageViewIterator method is: |
| % |
| % MagickBooleanType UpdateImageViewIterator(ImageView *source, |
| % UpdateImageViewMethod update,void *context) |
| % |
| % A description of each parameter follows: |
| % |
| % o source: the source image view. |
| % |
| % o update: the update callback method. |
| % |
| % o context: the user defined context. |
| % |
| */ |
| MagickExport MagickBooleanType UpdateImageViewIterator(ImageView *source, |
| UpdateImageViewMethod update,void *context) |
| { |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *source_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(source != (ImageView *) NULL); |
| assert(source->signature == MagickSignature); |
| if (update == (UpdateImageViewMethod) NULL) |
| return(MagickFalse); |
| source_image=source->image; |
| if (SetImageStorageClass(source_image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| status=MagickTrue; |
| progress=0; |
| exception=source->exception; |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(source->number_threads) |
| #endif |
| for (y=source->extent.y; y < (ssize_t) source->extent.height; y++) |
| { |
| const int |
| id = GetOpenMPThreadId(); |
| |
| register PixelPacket |
| *restrict pixels; |
| |
| if (status == MagickFalse) |
| continue; |
| pixels=GetCacheViewAuthenticPixels(source->view,source->extent.x,y, |
| source->extent.width,1,exception); |
| if (pixels == (PixelPacket *) NULL) |
| { |
| InheritException(source->exception,GetCacheViewException(source->view)); |
| status=MagickFalse; |
| continue; |
| } |
| if (update(source,y,id,context) == MagickFalse) |
| status=MagickFalse; |
| if (SyncCacheViewAuthenticPixels(source->view,exception) == MagickFalse) |
| { |
| InheritException(source->exception,GetCacheViewException(source->view)); |
| status=MagickFalse; |
| } |
| if (source_image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_UpdateImageViewIterator) |
| #endif |
| proceed=SetImageProgress(source_image,source->description,progress++, |
| source->extent.height); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| return(status); |
| } |