| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % PPPP IIIII X X EEEEE L % |
| % P P I X X E L % |
| % PPPP I X EEE L % |
| % P I X X E L % |
| % P IIIII X X EEEEE LLLLL % |
| % % |
| % IIIII TTTTT EEEEE RRRR AAA TTTTT OOO RRRR % |
| % I T E R R A A T O O R R % |
| % I T EEE RRRR AAAAA T O O RRRR % |
| % I T E R R A A T O O R R % |
| % IIIII T EEEEE R R A A T OOO R R % |
| % % |
| % % |
| % ImageMagick Image Pixel Iterator Methods % |
| % % |
| % Software Design % |
| % Cristy % |
| % March 2003 % |
| % % |
| % % |
| % Copyright 1999-2019 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 % |
| % % |
| % https://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 "MagickWand/studio.h" |
| #include "MagickWand/MagickWand.h" |
| #include "MagickWand/magick-wand-private.h" |
| #include "MagickWand/pixel-iterator.h" |
| #include "MagickWand/pixel-wand.h" |
| #include "MagickWand/wand.h" |
| |
| /* |
| Define declarations. |
| */ |
| #define PixelIteratorId "PixelIterator" |
| |
| /* |
| Typedef declarations. |
| */ |
| struct _PixelIterator |
| { |
| size_t |
| id; |
| |
| char |
| name[MagickPathExtent]; |
| |
| ExceptionInfo |
| *exception; |
| |
| CacheView |
| *view; |
| |
| RectangleInfo |
| region; |
| |
| MagickBooleanType |
| active; /* user has been given pixel data */ |
| |
| ssize_t |
| y; |
| |
| PixelWand |
| **pixel_wands; |
| |
| MagickBooleanType |
| debug; |
| |
| size_t |
| signature; |
| }; |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % C l e a r P i x e l I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ClearPixelIterator() clear resources associated with a PixelIterator. |
| % |
| % The format of the ClearPixelIterator method is: |
| % |
| % void ClearPixelIterator(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport void ClearPixelIterator(PixelIterator *iterator) |
| { |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->pixel_wands=DestroyPixelWands(iterator->pixel_wands, |
| iterator->region.width); |
| ClearMagickException(iterator->exception); |
| iterator->pixel_wands=NewPixelWands(iterator->region.width); |
| iterator->active=MagickFalse; |
| iterator->y=0; |
| iterator->debug=IsEventLogging(); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % C l o n e P i x e l I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ClonePixelIterator() makes an exact copy of the specified iterator. |
| % |
| % The format of the ClonePixelIterator method is: |
| % |
| % PixelIterator *ClonePixelIterator(const PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the magick iterator. |
| % |
| */ |
| WandExport PixelIterator *ClonePixelIterator(const PixelIterator *iterator) |
| { |
| PixelIterator |
| *clone_iterator; |
| |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| clone_iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*clone_iterator)); |
| if (clone_iterator == (PixelIterator *) NULL) |
| ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", |
| iterator->name); |
| (void) memset(clone_iterator,0,sizeof(*clone_iterator)); |
| clone_iterator->id=AcquireWandId(); |
| (void) FormatLocaleString(clone_iterator->name,MagickPathExtent,"%s-%.20g", |
| PixelIteratorId,(double) clone_iterator->id); |
| clone_iterator->exception=AcquireExceptionInfo(); |
| InheritException(clone_iterator->exception,iterator->exception); |
| clone_iterator->view=CloneCacheView(iterator->view); |
| clone_iterator->region=iterator->region; |
| clone_iterator->active=iterator->active; |
| clone_iterator->y=iterator->y; |
| clone_iterator->pixel_wands=ClonePixelWands((const PixelWand **) |
| iterator->pixel_wands,iterator->region.width); |
| clone_iterator->debug=iterator->debug; |
| if (clone_iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s", |
| clone_iterator->name); |
| clone_iterator->signature=MagickWandSignature; |
| return(clone_iterator); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % D e s t r o y P i x e l I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % DestroyPixelIterator() deallocates resources associated with a PixelIterator. |
| % |
| % The format of the DestroyPixelIterator method is: |
| % |
| % PixelIterator *DestroyPixelIterator(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport PixelIterator *DestroyPixelIterator(PixelIterator *iterator) |
| { |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->view=DestroyCacheView(iterator->view); |
| iterator->pixel_wands=DestroyPixelWands(iterator->pixel_wands, |
| iterator->region.width); |
| iterator->exception=DestroyExceptionInfo(iterator->exception); |
| iterator->signature=(~MagickWandSignature); |
| RelinquishWandId(iterator->id); |
| iterator=(PixelIterator *) RelinquishMagickMemory(iterator); |
| return(iterator); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s P i x e l I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsPixelIterator() returns MagickTrue if the iterator is verified as a pixel |
| % iterator. |
| % |
| % The format of the IsPixelIterator method is: |
| % |
| % MagickBooleanType IsPixelIterator(const PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the magick iterator. |
| % |
| */ |
| WandExport MagickBooleanType IsPixelIterator(const PixelIterator *iterator) |
| { |
| size_t |
| length; |
| |
| if (iterator == (const PixelIterator *) NULL) |
| return(MagickFalse); |
| if (iterator->signature != MagickWandSignature) |
| return(MagickFalse); |
| length=strlen(PixelIteratorId); |
| if (LocaleNCompare(iterator->name,PixelIteratorId,length) != 0) |
| return(MagickFalse); |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % N e w P i x e l I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % NewPixelIterator() returns a new pixel iterator. |
| % |
| % The format of the NewPixelIterator method is: |
| % |
| % PixelIterator *NewPixelIterator(MagickWand *wand) |
| % |
| % A description of each parameter follows: |
| % |
| % o wand: the magick wand. |
| % |
| */ |
| WandExport PixelIterator *NewPixelIterator(MagickWand *wand) |
| { |
| const char |
| *quantum; |
| |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *image; |
| |
| PixelIterator |
| *iterator; |
| |
| size_t |
| depth; |
| |
| CacheView |
| *view; |
| |
| depth=MAGICKCORE_QUANTUM_DEPTH; |
| quantum=GetMagickQuantumDepth(&depth); |
| if (depth != MAGICKCORE_QUANTUM_DEPTH) |
| ThrowWandFatalException(WandError,"QuantumDepthMismatch",quantum); |
| assert(wand != (MagickWand *) NULL); |
| image=GetImageFromMagickWand(wand); |
| if (image == (Image *) NULL) |
| return((PixelIterator *) NULL); |
| exception=AcquireExceptionInfo(); |
| view=AcquireVirtualCacheView(image,exception); |
| if (view == (CacheView *) NULL) |
| return((PixelIterator *) NULL); |
| iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator)); |
| if (iterator == (PixelIterator *) NULL) |
| ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", |
| GetExceptionMessage(errno)); |
| (void) memset(iterator,0,sizeof(*iterator)); |
| iterator->id=AcquireWandId(); |
| (void) FormatLocaleString(iterator->name,MagickPathExtent,"%s-%.20g", |
| PixelIteratorId,(double) iterator->id); |
| iterator->exception=exception; |
| iterator->view=view; |
| SetGeometry(image,&iterator->region); |
| iterator->region.width=image->columns; |
| iterator->region.height=image->rows; |
| iterator->region.x=0; |
| iterator->region.y=0; |
| iterator->pixel_wands=NewPixelWands(iterator->region.width); |
| iterator->y=0; |
| iterator->debug=IsEventLogging(); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->signature=MagickWandSignature; |
| return(iterator); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l C l e a r I t e r a t o r E x c e p t i o n % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelClearIteratorException() clear any exceptions associated with the |
| % iterator. |
| % |
| % The format of the PixelClearIteratorException method is: |
| % |
| % MagickBooleanType PixelClearIteratorException(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport MagickBooleanType PixelClearIteratorException( |
| PixelIterator *iterator) |
| { |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| ClearMagickException(iterator->exception); |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % N e w P i x e l R e g i o n I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % NewPixelRegionIterator() returns a new pixel iterator. |
| % |
| % The format of the NewPixelRegionIterator method is: |
| % |
| % PixelIterator *NewPixelRegionIterator(MagickWand *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 region of |
| % pixels. |
| % |
| */ |
| WandExport PixelIterator *NewPixelRegionIterator(MagickWand *wand, |
| const ssize_t x,const ssize_t y,const size_t width,const size_t height) |
| { |
| CacheView |
| *view; |
| |
| const char |
| *quantum; |
| |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *image; |
| |
| PixelIterator |
| *iterator; |
| |
| size_t |
| depth; |
| |
| assert(wand != (MagickWand *) NULL); |
| depth=MAGICKCORE_QUANTUM_DEPTH; |
| quantum=GetMagickQuantumDepth(&depth); |
| if (depth != MAGICKCORE_QUANTUM_DEPTH) |
| ThrowWandFatalException(WandError,"QuantumDepthMismatch",quantum); |
| if ((width == 0) || (height == 0)) |
| ThrowWandFatalException(WandError,"ZeroRegionSize",quantum); |
| image=GetImageFromMagickWand(wand); |
| if (image == (Image *) NULL) |
| return((PixelIterator *) NULL); |
| exception=AcquireExceptionInfo(); |
| view=AcquireVirtualCacheView(image,exception); |
| if (view == (CacheView *) NULL) |
| return((PixelIterator *) NULL); |
| iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator)); |
| if (iterator == (PixelIterator *) NULL) |
| ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", |
| wand->name); |
| (void) memset(iterator,0,sizeof(*iterator)); |
| iterator->id=AcquireWandId(); |
| (void) FormatLocaleString(iterator->name,MagickPathExtent,"%s-%.20g", |
| PixelIteratorId,(double) iterator->id); |
| iterator->exception=exception; |
| iterator->view=view; |
| SetGeometry(image,&iterator->region); |
| iterator->region.width=width; |
| iterator->region.height=height; |
| iterator->region.x=x; |
| iterator->region.y=y; |
| iterator->pixel_wands=NewPixelWands(iterator->region.width); |
| iterator->y=0; |
| iterator->debug=IsEventLogging(); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->signature=MagickWandSignature; |
| return(iterator); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t C u r r e n t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetCurrentIteratorRow() returns the current row as an array of pixel |
| % wands from the pixel iterator. |
| % |
| % The format of the PixelGetCurrentIteratorRow method is: |
| % |
| % PixelWand **PixelGetCurrentIteratorRow(PixelIterator *iterator, |
| % size_t *number_wands) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| % o number_wands: the number of pixel wands. |
| % |
| */ |
| WandExport PixelWand **PixelGetCurrentIteratorRow(PixelIterator *iterator, |
| size_t *number_wands) |
| { |
| register const Quantum |
| *pixels; |
| |
| register ssize_t |
| x; |
| |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| *number_wands=0; |
| iterator->active=MagickTrue; |
| pixels=GetCacheViewVirtualPixels(iterator->view,iterator->region.x, |
| iterator->region.y+iterator->y,iterator->region.width,1, |
| iterator->exception); |
| if (pixels == (const Quantum *) NULL) |
| return((PixelWand **) NULL); |
| for (x=0; x < (ssize_t) iterator->region.width; x++) |
| { |
| PixelSetQuantumPixel(GetCacheViewImage(iterator->view),pixels, |
| iterator->pixel_wands[x]); |
| pixels+=GetPixelChannels(GetCacheViewImage(iterator->view)); |
| } |
| *number_wands=iterator->region.width; |
| return(iterator->pixel_wands); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t I t e r a t o r E x c e p t i o n % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetIteratorException() returns the severity, reason, and description of |
| % any error that occurs when using other methods in this API. |
| % |
| % The format of the PixelGetIteratorException method is: |
| % |
| % char *PixelGetIteratorException(const PixelIterator *iterator, |
| % ExceptionType *severity) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| % o severity: the severity of the error is returned here. |
| % |
| */ |
| WandExport char *PixelGetIteratorException(const PixelIterator *iterator, |
| ExceptionType *severity) |
| { |
| char |
| *description; |
| |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| assert(severity != (ExceptionType *) NULL); |
| *severity=iterator->exception->severity; |
| description=(char *) AcquireQuantumMemory(2UL*MagickPathExtent, |
| sizeof(*description)); |
| if (description == (char *) NULL) |
| ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", |
| iterator->name); |
| *description='\0'; |
| if (iterator->exception->reason != (char *) NULL) |
| (void) CopyMagickString(description,GetLocaleExceptionMessage( |
| iterator->exception->severity,iterator->exception->reason),MagickPathExtent); |
| if (iterator->exception->description != (char *) NULL) |
| { |
| (void) ConcatenateMagickString(description," (",MagickPathExtent); |
| (void) ConcatenateMagickString(description,GetLocaleExceptionMessage( |
| iterator->exception->severity,iterator->exception->description), |
| MagickPathExtent); |
| (void) ConcatenateMagickString(description,")",MagickPathExtent); |
| } |
| return(description); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t E x c e p t i o n T y p e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetIteratorExceptionType() the exception type associated with the |
| % iterator. If no exception has occurred, UndefinedExceptionType is returned. |
| % |
| % The format of the PixelGetIteratorExceptionType method is: |
| % |
| % ExceptionType PixelGetIteratorExceptionType( |
| % const PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport ExceptionType PixelGetIteratorExceptionType( |
| const PixelIterator *iterator) |
| { |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| return(iterator->exception->severity); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetIteratorRow() returns the current pixel iterator row. |
| % |
| % The format of the PixelGetIteratorRow method is: |
| % |
| % MagickBooleanType PixelGetIteratorRow(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport ssize_t PixelGetIteratorRow(PixelIterator *iterator) |
| { |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| return(iterator->y); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t N e x t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetNextIteratorRow() returns the next row as an array of pixel wands |
| % from the pixel iterator. |
| % |
| % The format of the PixelGetNextIteratorRow method is: |
| % |
| % PixelWand **PixelGetNextIteratorRow(PixelIterator *iterator, |
| % size_t *number_wands) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| % o number_wands: the number of pixel wands. |
| % |
| */ |
| WandExport PixelWand **PixelGetNextIteratorRow(PixelIterator *iterator, |
| size_t *number_wands) |
| { |
| register const Quantum |
| *pixels; |
| |
| register ssize_t |
| x; |
| |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| *number_wands=0; |
| if (iterator->active != MagickFalse) |
| iterator->y++; |
| if (PixelSetIteratorRow(iterator,iterator->y) == MagickFalse) |
| return((PixelWand **) NULL); |
| pixels=GetCacheViewVirtualPixels(iterator->view,iterator->region.x, |
| iterator->region.y+iterator->y,iterator->region.width,1, |
| iterator->exception); |
| if (pixels == (const Quantum *) NULL) |
| return((PixelWand **) NULL); |
| for (x=0; x < (ssize_t) iterator->region.width; x++) |
| { |
| PixelSetQuantumPixel(GetCacheViewImage(iterator->view),pixels, |
| iterator->pixel_wands[x]); |
| pixels+=GetPixelChannels(GetCacheViewImage(iterator->view)); |
| } |
| *number_wands=iterator->region.width; |
| return(iterator->pixel_wands); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l G e t P r e v i o u s I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelGetPreviousIteratorRow() returns the previous row as an array of pixel |
| % wands from the pixel iterator. |
| % |
| % The format of the PixelGetPreviousIteratorRow method is: |
| % |
| % PixelWand **PixelGetPreviousIteratorRow(PixelIterator *iterator, |
| % size_t *number_wands) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| % o number_wands: the number of pixel wands. |
| % |
| */ |
| WandExport PixelWand **PixelGetPreviousIteratorRow(PixelIterator *iterator, |
| size_t *number_wands) |
| { |
| register const Quantum |
| *pixels; |
| |
| register ssize_t |
| x; |
| |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| *number_wands=0; |
| if (iterator->active != MagickFalse) |
| iterator->y--; |
| if (PixelSetIteratorRow(iterator,iterator->y) == MagickFalse) |
| return((PixelWand **) NULL); |
| pixels=GetCacheViewVirtualPixels(iterator->view,iterator->region.x, |
| iterator->region.y+iterator->y,iterator->region.width,1, |
| iterator->exception); |
| if (pixels == (const Quantum *) NULL) |
| return((PixelWand **) NULL); |
| for (x=0; x < (ssize_t) iterator->region.width; x++) |
| { |
| PixelSetQuantumPixel(GetCacheViewImage(iterator->view),pixels, |
| iterator->pixel_wands[x]); |
| pixels+=GetPixelChannels(GetCacheViewImage(iterator->view)); |
| } |
| *number_wands=iterator->region.width; |
| return(iterator->pixel_wands); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l R e s e t I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelResetIterator() resets the pixel iterator. Use it in conjunction |
| % with PixelGetNextIteratorRow() to iterate over all the pixels in a pixel |
| % container. |
| % |
| % The format of the PixelResetIterator method is: |
| % |
| % void PixelResetIterator(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport void PixelResetIterator(PixelIterator *iterator) |
| { |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->active=MagickFalse; |
| iterator->y=0; |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l S e t F i r s t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelSetFirstIteratorRow() sets the pixel iterator to the first pixel row. |
| % |
| % The format of the PixelSetFirstIteratorRow method is: |
| % |
| % void PixelSetFirstIteratorRow(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the magick iterator. |
| % |
| */ |
| WandExport void PixelSetFirstIteratorRow(PixelIterator *iterator) |
| { |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->active=MagickFalse; |
| iterator->y=iterator->region.y; |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l S e t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelSetIteratorRow() set the pixel iterator row. |
| % |
| % The format of the PixelSetIteratorRow method is: |
| % |
| % MagickBooleanType PixelSetIteratorRow(PixelIterator *iterator, |
| % const ssize_t row) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport MagickBooleanType PixelSetIteratorRow(PixelIterator *iterator, |
| const ssize_t row) |
| { |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| if ((row < 0) || (row >= (ssize_t) iterator->region.height)) |
| return(MagickFalse); |
| iterator->active=MagickTrue; |
| iterator->y=row; |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l S e t L a s t I t e r a t o r R o w % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelSetLastIteratorRow() sets the pixel iterator to the last pixel row. |
| % |
| % The format of the PixelSetLastIteratorRow method is: |
| % |
| % void PixelSetLastIteratorRow(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the magick iterator. |
| % |
| */ |
| WandExport void PixelSetLastIteratorRow(PixelIterator *iterator) |
| { |
| assert(iterator != (PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| iterator->active=MagickFalse; |
| iterator->y=(ssize_t) iterator->region.height-1; |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % P i x e l S y n c I t e r a t o r % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % PixelSyncIterator() syncs the pixel iterator. |
| % |
| % The format of the PixelSyncIterator method is: |
| % |
| % MagickBooleanType PixelSyncIterator(PixelIterator *iterator) |
| % |
| % A description of each parameter follows: |
| % |
| % o iterator: the pixel iterator. |
| % |
| */ |
| WandExport MagickBooleanType PixelSyncIterator(PixelIterator *iterator) |
| { |
| MagickBooleanType |
| status; |
| |
| register ssize_t |
| x; |
| |
| register Quantum |
| *_magickcore_restrict pixels; |
| |
| assert(iterator != (const PixelIterator *) NULL); |
| assert(iterator->signature == MagickWandSignature); |
| if (iterator->debug != MagickFalse) |
| (void) LogMagickEvent(WandEvent,GetMagickModule(),"%s",iterator->name); |
| status=SetCacheViewStorageClass(iterator->view,DirectClass, |
| iterator->exception); |
| if (status == MagickFalse) |
| return(MagickFalse); |
| pixels=GetCacheViewAuthenticPixels(iterator->view,iterator->region.x, |
| iterator->region.y+iterator->y,iterator->region.width,1, |
| iterator->exception); |
| if (pixels == (Quantum *) NULL) |
| return(MagickFalse); |
| for (x=0; x < (ssize_t) iterator->region.width; x++) |
| { |
| PixelGetQuantumPixel(GetCacheViewImage(iterator->view), |
| iterator->pixel_wands[x],pixels); |
| pixels+=GetPixelChannels(GetCacheViewImage(iterator->view)); |
| } |
| if (SyncCacheViewAuthenticPixels(iterator->view,iterator->exception) == MagickFalse) |
| return(MagickFalse); |
| return(MagickTrue); |
| } |
