/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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) || (width == 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) ResetMagickMemory(iterator,0,sizeof(*iterator)); iterator->id=AcquireWandId(); (void) FormatLocaleString(iterator->name,MaxTextExtent,"%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=WandSignature; return(iterator); }
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 long x, % const long y,const unsigned long columns,const unsigned long rows, % const MagickBooleanType modify) % % 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 long x, const long y,const unsigned long columns,const unsigned long rows) { const char *quantum; Image *image; PixelIterator *iterator; unsigned long depth; ViewInfo *view; assert(wand != (MagickWand *) NULL); depth=MAGICKCORE_QUANTUM_DEPTH; quantum=GetMagickQuantumDepth(&depth); if (depth != MAGICKCORE_QUANTUM_DEPTH) ThrowWandFatalException(WandError,"QuantumDepthMismatch",quantum); if ((columns == 0) || (rows == 0)) ThrowWandFatalException(WandError,"ZeroRegionSize",quantum); image=GetImageFromMagickWand(wand); if (image == (Image *) NULL) return((PixelIterator *) NULL); view=OpenCacheView(image); if (view == (ViewInfo *) NULL) return((PixelIterator *) NULL); iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator)); if (iterator == (PixelIterator *) NULL) ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", wand->name); (void) ResetMagickMemory(iterator,0,sizeof(*iterator)); iterator->id=AcquireWandId(); (void) FormatMagickString(iterator->name,MaxTextExtent,"%s-%lu", PixelIteratorId,iterator->id); iterator->exception=AcquireExceptionInfo(); iterator->view=view; SetGeometry(image,&iterator->region); iterator->region.width=columns; iterator->region.height=rows; 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=WandSignature; return(iterator); }
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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; 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); view=AcquireCacheView(image); if (view == (CacheView *) NULL) return((PixelIterator *) NULL); iterator=(PixelIterator *) AcquireMagickMemory(sizeof(*iterator)); if (iterator == (PixelIterator *) NULL) ThrowWandFatalException(ResourceLimitFatalError,"MemoryAllocationFailed", GetExceptionMessage(errno)); (void) ResetMagickMemory(iterator,0,sizeof(*iterator)); iterator->id=AcquireWandId(); (void) FormatMagickString(iterator->name,MaxTextExtent,"%s-%.20g", PixelIteratorId,(double) iterator->id); iterator->exception=AcquireExceptionInfo(); 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=WandSignature; return(iterator); }
/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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: % % PixelIterator *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 == WandSignature); 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(); }