/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % SSSSS TTTTT RRRR EEEEE AAA M M % % SS T R R E A A MM MM % % SSS T RRRR EEE AAAAA M M M % % SS T R R E A A M M % % SSSSS T R R EEEEE A A M M % % % % % % ImageMagick Pixel Stream Methods % % % % Software Design % % John Cristy % % March 2000 % % % % % % Copyright 1999-2007 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/blob.h" #include "magick/blob-private.h" #include "magick/cache.h" #include "magick/cache-private.h" #include "magick/color-private.h" #include "magick/composite-private.h" #include "magick/constitute.h" #include "magick/exception.h" #include "magick/exception-private.h" #include "magick/geometry.h" #include "magick/memory_.h" #include "magick/quantum.h" #include "magick/quantum-private.h" #include "magick/semaphore.h" #include "magick/stream.h" #include "magick/stream-private.h" #include "magick/string_.h" /* Typedef declaractions. */ struct _StreamInfo { const ImageInfo *image_info; const Image *image; Image *stream; QuantumInfo *quantum_info; char *map; StorageType storage_type; unsigned char *pixels; RectangleInfo extract_info; long y; ExceptionInfo *exception; const void *client_data; unsigned long signature; }; /* Declare pixel cache interfaces. */ #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif static const PixelPacket *AcquirePixelStream(const Image *,const VirtualPixelMethod,const long, const long,const unsigned long,const unsigned long,ExceptionInfo *); static PixelPacket AcquireOnePixelFromStream(const Image *,const VirtualPixelMethod,const long, const long,ExceptionInfo *), GetOnePixelFromStream(Image *,const long,const long), *GetPixelStream(Image *,const long,const long,const unsigned long, const unsigned long), *GetPixelsFromStream(const Image *), *SetPixelStream(Image *,const long,const long,const unsigned long, const unsigned long); static MagickBooleanType StreamImagePixels(const StreamInfo *,const Image *,ExceptionInfo *), SyncPixelStream(Image *); static void DestroyPixelStream(Image *); #if defined(__cplusplus) || defined(c_plusplus) } #endif /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + A c q u i r e I n d e x e s F r o m S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquireIndexesFromStream() returns the indexes associated with the last call to % SetPixelStream() or AcquirePixelStream(). % % The format of the AcquireIndexesFromStream() method is: % % const IndexPacket *AcquireIndexesFromStream(const Image *image) % % A description of each parameter follows: % % o indexes: return the indexes associated with the last call to % SetPixelStream() or AcquirePixelStream(). % % o image: The image. % */ static const IndexPacket *AcquireIndexesFromStream(const Image *image) { CacheInfo *cache_info; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); return(cache_info->indexes); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + A c q u i r e O n e P i x e l F r o m S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquireOnePixelFromStream() returns a single pixel at the specified (x.y) % location. The image background color is returned if an error occurs. % % The format of the AcquireOnePixelFromStream() method is: % % PixelPacket *AcquireOnePixelFromStream(const Image image, % const VirtualPixelMethod virtual_pixel_method,const long x, % const long y,ExceptionInfo *exception) % % A description of each parameter follows: % % o pixels: AcquireOnePixelFromStream() returns a pixel at the specified % (x,y) location. % % o image: The image. % % o virtual_pixel_method: The virtual pixel method. % % o x,y: These values define the location of the pixel to return. % % o exception: Return any errors or warnings in this structure. % */ static PixelPacket AcquireOnePixelFromStream(const Image *image, const VirtualPixelMethod virtual_pixel_method,const long x,const long y, ExceptionInfo *exception) { register const PixelPacket *pixel; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); pixel=AcquirePixelStream(image,virtual_pixel_method,x,y,1,1,exception); if (pixel != (PixelPacket *) NULL) return(*pixel); return(image->background_color); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + A c q u i r e P i x e l S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquirePixelStream() 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. For streams this % method is a no-op. % % The format of the AcquirePixelStream() method is: % % const PixelPacket *AcquirePixelStream(const Image *image, % const VirtualPixelMethod virtual_pixel_method,const long x, % const long y,const unsigned long columns,const unsigned long rows, % ExceptionInfo *exception) % % A description of each parameter follows: % % o image: The image. % % o virtual_pixel_method: The virtual pixel method. % % 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. % */ static inline void AcquireStreamPixels(CacheInfo *cache_info) { assert(cache_info != (CacheInfo *) NULL); assert(cache_info->length == (MagickSizeType) ((size_t) cache_info->length)); cache_info->pixels=(PixelPacket *) MapBlob(-1,IOMode,0,(size_t) cache_info->length); if (cache_info->pixels != (PixelPacket *) NULL) { cache_info->mapped=MagickTrue; return; } cache_info->pixels=(PixelPacket *) AcquireMagickMemory((size_t) cache_info->length); if (cache_info->pixels != (PixelPacket *) NULL) (void) ResetMagickMemory(cache_info->pixels,0,(size_t) cache_info->length); cache_info->mapped=MagickFalse; } static const PixelPacket *AcquirePixelStream(const Image *image, const VirtualPixelMethod magick_unused(virtual_pixel_method),const long x, const long y,const unsigned long columns,const unsigned long rows, ExceptionInfo *exception) { CacheInfo *cache_info; MagickSizeType number_pixels; size_t length; /* Validate pixel cache geometry. */ assert(image != (const Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); if ((x < 0) || (y < 0) || ((x+(long) columns) > (long) image->columns) || ((y+(long) rows) > (long) image->rows) || (columns == 0) || (rows == 0)) { (void) ThrowMagickException(exception,GetMagickModule(),StreamError, "ImageDoesNotContainTheStreamGeometry","`%s'",image->filename); return((PixelPacket *) NULL); } cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); if (cache_info->type == UndefinedCache) { (void) ThrowMagickException(exception,GetMagickModule(),StreamError, "PixelCacheIsNotOpen","`%s'",image->filename); return((PixelPacket *) NULL); } /* Pixels are stored in a temporary buffer until they are synced to the cache. */ number_pixels=(MagickSizeType) columns*rows; length=(size_t) number_pixels*sizeof(PixelPacket); if ((image->storage_class == PseudoClass) || (image->colorspace == CMYKColorspace)) length+=number_pixels*sizeof(IndexPacket); cache_info->length=length; AcquireStreamPixels(cache_info); if (cache_info->pixels == (void *) NULL) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); cache_info->length=(MagickSizeType) length; cache_info->indexes=(IndexPacket *) NULL; if ((image->storage_class == PseudoClass) || (image->colorspace == CMYKColorspace)) cache_info->indexes=(IndexPacket *) (cache_info->pixels+number_pixels); return(cache_info->pixels); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + A c q u i r e S t r e a m I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % AcquireStreamInfo() allocates the StreamInfo structure. % % The format of the AcquireStreamInfo method is: % % StreamInfo *AcquireStreamInfo(const ImageInfo *image_info) % % A description of each parameter follows: % % o image_info: The image info. % */ MagickExport StreamInfo *AcquireStreamInfo(const ImageInfo *image_info) { StreamInfo *stream_info; stream_info=(StreamInfo *) AcquireMagickMemory(sizeof(*stream_info)); if (stream_info == (StreamInfo *) NULL) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); (void) ResetMagickMemory(stream_info,0,sizeof(*stream_info)); stream_info->pixels=(unsigned char *) AcquireMagickMemory( sizeof(*stream_info->pixels)); if (stream_info->pixels == (unsigned char *) NULL) ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); stream_info->map=ConstantString("RGB"); stream_info->storage_type=CharPixel; stream_info->stream=AllocateImage(image_info); stream_info->signature=MagickSignature; return(stream_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + D e s t r o y P i x e l S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DestroyPixelStream() deallocates memory associated with the pixel stream. % % The format of the DestroyPixelStream() method is: % % void DestroyPixelStream(Image *image) % % A description of each parameter follows: % % o image: The image. % */ static inline void RelinquishStreamPixels(CacheInfo *cache_info) { assert(cache_info != (CacheInfo *) NULL); if (cache_info->mapped == MagickFalse) (void) RelinquishMagickMemory(cache_info->pixels); else (void) UnmapBlob(cache_info->pixels,(size_t) cache_info->length); cache_info->pixels=(PixelPacket *) NULL; cache_info->indexes=(IndexPacket *) NULL; } static void DestroyPixelStream(Image *image) { CacheInfo *cache_info; MagickBooleanType destroy; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); destroy=MagickFalse; AcquireSemaphoreInfo(&cache_info->semaphore); cache_info->reference_count--; if (cache_info->reference_count == 0) destroy=MagickTrue; RelinquishSemaphoreInfo(cache_info->semaphore); if (destroy == MagickFalse) return; RelinquishStreamPixels(cache_info); if (cache_info->nexus_info != (NexusInfo *) NULL) { register long id; for (id=0; id < (long) cache_info->number_views; id++) DestroyCacheNexus(cache_info,(unsigned long) id); cache_info->nexus_info=(NexusInfo *) RelinquishMagickMemory( cache_info->nexus_info); } if (cache_info->semaphore != (SemaphoreInfo *) NULL) cache_info->semaphore=DestroySemaphoreInfo(cache_info->semaphore); cache_info=(CacheInfo *) RelinquishMagickMemory(cache_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + D e s t r o y S t r e a m I n f o % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DestroyStreamInfo() destroys memory associated with the StreamInfo % structure. % % The format of the DestroyStreamInfo method is: % % StreamInfo *DestroyStreamInfo(StreamInfo *stream_info) % % A description of each parameter follows: % % o stream_info: The stream info. % */ MagickExport StreamInfo *DestroyStreamInfo(StreamInfo *stream_info) { (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); if (stream_info->map != (char *) NULL) stream_info->map=DestroyString(stream_info->map); if (stream_info->pixels != (unsigned char *) NULL) stream_info->pixels=(unsigned char *) RelinquishMagickMemory( stream_info->pixels); if (stream_info->stream != (Image *) NULL) { CloseBlob(stream_info->stream); stream_info->stream=DestroyImage(stream_info->stream); } if (stream_info->quantum_info != (QuantumInfo *) NULL) stream_info->quantum_info=(QuantumInfo *) RelinquishMagickMemory( stream_info->quantum_info); stream_info->signature=(~MagickSignature); stream_info=(StreamInfo *) RelinquishMagickMemory(stream_info); return(stream_info); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + G e t I n d e x e s F r o m S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetIndexesFromStream() returns the indexes associated with the last call to % SetPixelStream() or GetPixelStream(). % % The format of the GetIndexesFromStream() method is: % % IndexPacket *GetIndexesFromStream(const Image *image) % % A description of each parameter follows: % % o indexes: Method GetIndexesFromStream() returns the indexes associated % with the last call to SetPixelStream() or GetPixelStream(). % % o image: The image. % */ static IndexPacket *GetIndexesFromStream(const Image *image) { CacheInfo *cache_info; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); return(cache_info->indexes); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + G e t O n e P i x e l F r o m S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetOnePixelFromStream() returns a single pixel at the specified (x,y) % location. The image background color is returned if an error occurs. % % The format of the GetOnePixelFromStream() method is: % % PixelPacket *GetOnePixelFromStream(const Image image,const long x, % const long y) % % A description of each parameter follows: % % o pixels: Method GetOnePixelFromStream returns a pixel at the specified % (x,y) location. % % o image: The image. % % o x,y: These values define the location of the pixel to return. % */ static PixelPacket GetOnePixelFromStream(Image *image,const long x,const long y) { register PixelPacket *pixel; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); pixel=GetPixelStream(image,x,y,1,1); if (pixel != (PixelPacket *) NULL) return(*pixel); return(image->background_color); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + G e t P i x e l S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetPixelStream() 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. For streams % this method is a no-op. % % The format of the GetPixelStream() method is: % % PixelPacket *GetPixelStream(Image *image,const long x,const long y, % const unsigned long columns,const unsigned long rows) % % A description of each parameter follows: % % o image: The image. % % o x,y,columns,rows: These values define the perimeter of a region of % pixels. % */ static PixelPacket *GetPixelStream(Image *image,const long x,const long y, const unsigned long columns,const unsigned long rows) { PixelPacket *pixels; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); pixels=SetPixelStream(image,x,y,columns,rows); return(pixels); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + G e t P i x e l F r o m S t e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetPixelsFromStream() returns the pixels associated with the last call to % SetPixelStream() or GetPixelStream(). % % The format of the GetPixelsFromStream() method is: % % PixelPacket *GetPixelsFromStream(const Image image) % % A description of each parameter follows: % % o pixels: Method GetPixelsFromStream returns the pixels associated with % the last call to SetPixelStream() or GetPixelStream(). % % o image: The image. % */ static PixelPacket *GetPixelsFromStream(const Image *image) { CacheInfo *cache_info; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); return(cache_info->pixels); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + G e t S t r e a m I n f o C l i e n t D a t a % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % GetStreamInfoClientData() gets the stream info client data. % % The format of the SetStreamInfoClientData method is: % % const void *GetStreamInfoClientData(StreamInfo *stream_info) % % A description of each parameter follows: % % o stream_info: The stream info. % */ MagickExport const void *GetStreamInfoClientData(StreamInfo *stream_info) { assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); return(stream_info->client_data); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + O p e n S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % OpenStream() opens a stream for writing by the StreamImage() method. % % The format of the OpenStream method is: % % MagickBooleanType OpenStream(const ImageInfo *image_info, % StreamInfo *stream_info,const char *filename,ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: The image info. % % o stream_info: The stream info. % % o filename: The stream filename. % % o exception: Return any errors or warnings in this structure. % */ MagickExport MagickBooleanType OpenStream(const ImageInfo *image_info, StreamInfo *stream_info,const char *filename,ExceptionInfo *exception) { MagickBooleanType status; (void) CopyMagickString(stream_info->stream->filename,filename,MaxTextExtent); status=OpenBlob(image_info,stream_info->stream,WriteBinaryBlobMode,exception); return(status); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadStream() makes the image pixels available to a user supplied % callback method immediately upon reading a scanline with the ReadImage() % method. % % The format of the ReadStream() method is: % % Image *ReadStream(const ImageInfo *image_info,StreamHandler stream, % ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: The image info. % % o stream: a callback method. % % o exception: Return any errors or warnings in this structure. % */ MagickExport Image *ReadStream(const ImageInfo *image_info,StreamHandler stream, ExceptionInfo *exception) { CacheMethods cache_methods; Image *image; ImageInfo *read_info; /* Stream image pixels. */ assert(image_info != (ImageInfo *) NULL); assert(image_info->signature == MagickSignature); if (image_info->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", image_info->filename); assert(exception != (ExceptionInfo *) NULL); assert(exception->signature == MagickSignature); read_info=CloneImageInfo(image_info); (void) GetCacheInfo(&read_info->cache); GetCacheMethods(&cache_methods); cache_methods.acquire_pixel_handler=AcquirePixelStream; cache_methods.acquire_indexes_from_handler=AcquireIndexesFromStream; cache_methods.get_pixel_handler=GetPixelStream; cache_methods.set_pixel_handler=SetPixelStream; cache_methods.sync_pixel_handler=SyncPixelStream; cache_methods.get_pixels_from_handler=GetPixelsFromStream; cache_methods.get_indexes_from_handler=GetIndexesFromStream; cache_methods.acquire_one_pixel_from_handler=AcquireOnePixelFromStream; cache_methods.get_one_pixel_from_handler=GetOnePixelFromStream; cache_methods.destroy_pixel_handler=DestroyPixelStream; SetCacheMethods(read_info->cache,&cache_methods); read_info->stream=stream; image=ReadImage(read_info,exception); read_info=DestroyImageInfo(read_info); return(image); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S e t P i x e l S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetPixelStream() allocates an area to store image pixels as defined by the % region rectangle and returns a pointer to the area. This area is % subsequently transferred from the pixel cache with method SyncPixelStream(). % A pointer to the pixels is returned if the pixels are transferred, % otherwise a NULL is returned. % % The format of the SetPixelStream() method is: % % PixelPacket *SetPixelStream(Image *image,const long x,const long y, % const unsigned long columns,const unsigned long rows) % % A description of each parameter follows: % % o pixels: Method SetPixelStream returns a pointer to the pixels is % returned if the pixels are transferred, otherwise a NULL is returned. % % o image: The image. % % o x,y,columns,rows: These values define the perimeter of a region of % pixels. % */ static PixelPacket *SetPixelStream(Image *image,const long x,const long y, const unsigned long columns,const unsigned long rows) { CacheInfo *cache_info; MagickSizeType number_pixels; size_t length; StreamHandler stream_handler; /* Validate pixel cache geometry. */ assert(image != (Image *) NULL); if ((x < 0) || (y < 0) || ((x+(long) columns) > (long) image->columns) || ((y+(long) rows) > (long) image->rows) || (columns == 0) || (rows == 0)) { (void) ThrowMagickException(&image->exception,GetMagickModule(), StreamError,"ImageDoesNotContainTheStreamGeometry","`%s'", image->filename); return((PixelPacket *) NULL); } stream_handler=GetBlobStreamHandler(image); if (stream_handler == (StreamHandler) NULL) { (void) ThrowMagickException(&image->exception,GetMagickModule(), StreamError,"NoStreamHandlerIsDefined","`%s'",image->filename); return((PixelPacket *) NULL); } cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); if ((image->storage_class != GetCacheClass(image->cache)) || (image->colorspace != GetCacheColorspace(image->cache))) { if (GetCacheClass(image->cache) == UndefinedClass) (void) stream_handler(image,(const void *) NULL,(size_t) cache_info->columns); cache_info->storage_class=image->storage_class; cache_info->colorspace=image->colorspace; cache_info->columns=image->columns; cache_info->rows=image->rows; image->cache=cache_info; } /* Pixels are stored in a temporary buffer until they are synced to the cache. */ cache_info->columns=columns; cache_info->rows=rows; number_pixels=(MagickSizeType) columns*rows; length=(size_t) number_pixels*sizeof(PixelPacket); if ((image->storage_class == PseudoClass) || (image->colorspace == CMYKColorspace)) length+=number_pixels*sizeof(IndexPacket); if (cache_info->pixels == (PixelPacket *) NULL) { cache_info->pixels=(PixelPacket *) AcquireMagickMemory(length); cache_info->length=(MagickSizeType) length; } else if (cache_info->length < (MagickSizeType) length) { cache_info->pixels=(PixelPacket *) ResizeMagickMemory( cache_info->pixels,length); cache_info->length=(MagickSizeType) length; } if (cache_info->pixels == (void *) NULL) ThrowFatalException(ResourceLimitFatalError, "UnableToAllocateImagePixels"); cache_info->indexes=(IndexPacket *) NULL; if ((image->storage_class == PseudoClass) || (image->colorspace == CMYKColorspace)) cache_info->indexes=(IndexPacket *) (cache_info->pixels+number_pixels); return(cache_info->pixels); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S e t S t r e a m I n f o C l i e n t D a t a % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStreamInfoClientData() sets the stream info client data. % % The format of the SetStreamInfoClientData method is: % % void SetStreamInfoClientData(StreamInfo *stream_info, % const void *client_data) % % A description of each parameter follows: % % o stream_info: The stream info. % % o client_data: The client data. % */ MagickExport void SetStreamInfoClientData(StreamInfo *stream_info, const void *client_data) { assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); stream_info->client_data=client_data; } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S e t S t r e a m I n f o M a p % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStreamInfoMap() sets the stream info map member. % % The format of the SetStreamInfoMap method is: % % void SetStreamInfoMap(StreamInfo *stream_info,const char *map) % % A description of each parameter follows: % % o stream_info: The stream info. % % o map: The map. % */ MagickExport void SetStreamInfoMap(StreamInfo *stream_info,const char *map) { assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); (void) CloneString(&stream_info->map,map); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S e t S t r e a m I n f o S t o r a g e T y p e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SetStreamInfoStorageType() sets the stream info storage type member. % % The format of the SetStreamInfoStorageType method is: % % void SetStreamInfoStorageType(StreamInfo *stream_info, % const StoreageType *storage_type) % % A description of each parameter follows: % % o stream_info: The stream info. % % o storage_type: The storage type. % */ MagickExport void SetStreamInfoStorageType(StreamInfo *stream_info, const StorageType storage_type) { assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); stream_info->storage_type=storage_type; } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S t r e a m I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StreamImage() streams pixels from an image and writes them in a user % defined format and storage type (e.g. RGBA as 8-bit unsigned char). % % The format of he wStreamImage() method is: % % Image *StreamImage(const ImageInfo *image_info, % StreamInfo *stream_info,ExceptionInfo *exception) % % A description of each parameter follows: % % o image_info: The image info. % % o stream_info: The stream info. % % o exception: Return any errors or warnings in this structure. % */ #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif static size_t WriteStreamImage(const Image *image,const void *pixels, const size_t columns) { RectangleInfo extract_info; size_t length, packet_size; ssize_t count; StreamInfo *stream_info; stream_info=(StreamInfo *) image->client_data; switch (stream_info->storage_type) { default: packet_size=sizeof(char); break; case CharPixel: packet_size=sizeof(char); break; case DoublePixel: packet_size=sizeof(double); break; case FloatPixel: packet_size=sizeof(float); break; case IntegerPixel: packet_size=sizeof(int); break; case LongPixel: packet_size=sizeof(long); break; case QuantumPixel: packet_size=sizeof(Quantum); break; case ShortPixel: packet_size=sizeof(unsigned short); break; } packet_size*=strlen(stream_info->map); length=packet_size*image->columns; if (image != stream_info->image) { ImageInfo *write_info; /* Prepare stream for writing. */ stream_info->pixels=(unsigned char *) ResizeQuantumMemory( stream_info->pixels,length,sizeof(*stream_info->pixels)); if (pixels == (unsigned char *) NULL) return(0); stream_info->image=image; write_info=CloneImageInfo(stream_info->image_info); (void) SetImageInfo(write_info,MagickFalse,stream_info->exception); if (write_info->extract != (char *) NULL) (void) ParseAbsoluteGeometry(write_info->extract, &stream_info->extract_info); stream_info->y=0; write_info=DestroyImageInfo(write_info); } extract_info=stream_info->extract_info; if ((extract_info.width == 0) || (extract_info.height == 0)) { /* Write all pixels to stream. */ (void) StreamImagePixels(stream_info,image,stream_info->exception); count=WriteBlob(stream_info->stream,length,stream_info->pixels); stream_info->y++; return(count == 0 ? 0 : columns); } if ((stream_info->y < extract_info.y) || (stream_info->y >= (long) (extract_info.y+extract_info.height))) { stream_info->y++; return(columns); } /* Write a portion of the pixel row to the stream. */ (void) StreamImagePixels(stream_info,image,stream_info->exception); length=packet_size*extract_info.width; count=WriteBlob(stream_info->stream,length,stream_info->pixels+ packet_size*extract_info.x); stream_info->y++; return(count == 0 ? 0 : columns); } #if defined(__cplusplus) || defined(c_plusplus) } #endif MagickExport Image *StreamImage(const ImageInfo *image_info, StreamInfo *stream_info,ExceptionInfo *exception) { Image *image; ImageInfo *read_info; assert(image_info != (const ImageInfo *) NULL); assert(image_info->signature == MagickSignature); if (image_info->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", image_info->filename); assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); assert(exception != (ExceptionInfo *) NULL); read_info=CloneImageInfo(image_info); stream_info->image_info=image_info; stream_info->quantum_info=AcquireQuantumInfo(image_info); stream_info->exception=exception; read_info->client_data=(void *) stream_info; image=ReadStream(read_info,&WriteStreamImage,exception); read_info=DestroyImageInfo(read_info); return(image); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S t r e a m I m a g e P i x e l s % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % StreamImagePixels() extracts pixel data from an image and returns it in the % stream_info->pixels structure in the format as defined by % stream_info->quantum_info->map and stream_info->quantum_info->storage_type. % % The format of the StreamImagePixels method is: % % MagickBooleanType StreamImagePixels(const StreamInfo *stream_info, % const Image *image,ExceptionInfo *exception) % % A description of each parameter follows: % % o stream_info: The stream info. % % o image: The image. % % o exception: Return any errors or warnings in this structure. % */ static MagickBooleanType StreamImagePixels(const StreamInfo *stream_info, const Image *image,ExceptionInfo *exception) { QuantumInfo *quantum_info; QuantumType *quantum_map; register long i, x; register const PixelPacket *p; register IndexPacket *indexes; size_t length; assert(stream_info != (StreamInfo *) NULL); assert(stream_info->signature == MagickSignature); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); length=strlen(stream_info->map); quantum_map=(QuantumType *) AcquireQuantumMemory(length,sizeof(*quantum_map)); if (quantum_map == (QuantumType *) NULL) { (void) ThrowMagickException(exception,GetMagickModule(), ResourceLimitError,"MemoryAllocationFailed","`%s'",image->filename); return(MagickFalse); } for (i=0; i < (long) length; i++) { switch (stream_info->map[i]) { case 'A': case 'a': { quantum_map[i]=AlphaQuantum; break; } case 'B': case 'b': { quantum_map[i]=BlueQuantum; break; } case 'C': case 'c': { quantum_map[i]=CyanQuantum; if (image->colorspace == CMYKColorspace) break; quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),ImageError, "ColorSeparatedImageRequired","`%s'",stream_info->map); return(MagickFalse); } case 'g': case 'G': { quantum_map[i]=GreenQuantum; break; } case 'I': case 'i': { quantum_map[i]=IndexQuantum; break; } case 'K': case 'k': { quantum_map[i]=BlackQuantum; if (image->colorspace == CMYKColorspace) break; quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),ImageError, "ColorSeparatedImageRequired","`%s'",stream_info->map); return(MagickFalse); } case 'M': case 'm': { quantum_map[i]=MagentaQuantum; if (image->colorspace == CMYKColorspace) break; quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),ImageError, "ColorSeparatedImageRequired","`%s'",stream_info->map); return(MagickFalse); } case 'o': case 'O': { quantum_map[i]=OpacityQuantum; break; } case 'P': case 'p': { quantum_map[i]=UndefinedQuantum; break; } case 'R': case 'r': { quantum_map[i]=RedQuantum; break; } case 'Y': case 'y': { quantum_map[i]=YellowQuantum; if (image->colorspace == CMYKColorspace) break; quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),ImageError, "ColorSeparatedImageRequired","`%s'",stream_info->map); return(MagickFalse); } default: { quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),OptionError, "UnrecognizedPixelMap","`%s'",stream_info->map); return(MagickFalse); } } } quantum_info=stream_info->quantum_info; switch (stream_info->storage_type) { case CharPixel: { register unsigned char *q; q=(unsigned char *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->blue); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->red); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->blue); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->red); *q++=ScaleQuantumToChar((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->blue); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->red); *q++=ScaleQuantumToChar((Quantum) 0); p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(PixelIntensityToQuantum(p)); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->red); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->blue); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->red); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->blue); *q++=ScaleQuantumToChar((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToChar(p->red); *q++=ScaleQuantumToChar(p->green); *q++=ScaleQuantumToChar(p->blue); *q++=ScaleQuantumToChar((Quantum) 0); p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=ScaleQuantumToChar(p->red); break; } case GreenQuantum: case MagentaQuantum: { *q=ScaleQuantumToChar(p->green); break; } case BlueQuantum: case YellowQuantum: { *q=ScaleQuantumToChar(p->blue); break; } case AlphaQuantum: { *q=ScaleQuantumToChar((Quantum) (QuantumRange-p->opacity)); break; } case OpacityQuantum: { *q=ScaleQuantumToChar(p->opacity); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=ScaleQuantumToChar(indexes[x]); break; } case IndexQuantum: { *q=ScaleQuantumToChar(PixelIntensityToQuantum(p)); break; } default: break; } q++; } p++; } break; } case DoublePixel: { register double *q; q=(double *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*((Quantum) (QuantumRange-p->opacity)))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=0.0; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*PixelIntensityToQuantum(p))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*((Quantum) (QuantumRange-p->opacity)))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=0.0; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=(double) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); break; } case GreenQuantum: case MagentaQuantum: { *q=(double) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); break; } case BlueQuantum: case YellowQuantum: { *q=(double) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); break; } case AlphaQuantum: { *q=(double) ((QuantumScale*((Quantum) (QuantumRange- p->opacity)))*quantum_info->scale+quantum_info->minimum); break; } case OpacityQuantum: { *q=(double) ((QuantumScale*p->opacity)*quantum_info->scale+ quantum_info->minimum); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=(double) ((QuantumScale*indexes[x])*quantum_info->scale+ quantum_info->minimum); break; } case IndexQuantum: { *q=(double) ((QuantumScale*PixelIntensityToQuantum(p))* quantum_info->scale+quantum_info->minimum); break; } default: *q=0; } q++; } p++; } break; } case FloatPixel: { register float *q; q=(float *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*(Quantum) (QuantumRange-p->opacity))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=0.0; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*PixelIntensityToQuantum(p))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*((Quantum) (QuantumRange-p->opacity)))* quantum_info->scale+quantum_info->minimum); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); *q++=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); *q++=0.0; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=(float) ((QuantumScale*p->red)*quantum_info->scale+ quantum_info->minimum); break; } case GreenQuantum: case MagentaQuantum: { *q=(float) ((QuantumScale*p->green)*quantum_info->scale+ quantum_info->minimum); break; } case BlueQuantum: case YellowQuantum: { *q=(float) ((QuantumScale*p->blue)*quantum_info->scale+ quantum_info->minimum); break; } case AlphaQuantum: { *q=(float) ((QuantumScale*((Quantum) (QuantumRange- p->opacity)))*quantum_info->scale+quantum_info->minimum); break; } case OpacityQuantum: { *q=(float) ((QuantumScale*p->opacity)*quantum_info->scale+ quantum_info->minimum); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=(float) ((QuantumScale*indexes[x])*quantum_info->scale+ quantum_info->minimum); break; } case IndexQuantum: { *q=(float) ((QuantumScale*PixelIntensityToQuantum(p))* quantum_info->scale+quantum_info->minimum); break; } default: *q=0; } q++; } p++; } break; } case IntegerPixel: { register unsigned int *q; q=(unsigned int *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->blue); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->red); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->blue); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->red); *q++=(unsigned int) ScaleQuantumToLong((Quantum) (QuantumRange- p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->blue); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->red); *q++=0U; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong( PixelIntensityToQuantum(p)); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->red); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->blue); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->red); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->blue); *q++=(unsigned int) ScaleQuantumToLong((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=(unsigned int) ScaleQuantumToLong(p->red); *q++=(unsigned int) ScaleQuantumToLong(p->green); *q++=(unsigned int) ScaleQuantumToLong(p->blue); *q++=0U; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=(unsigned int) ScaleQuantumToLong(p->red); break; } case GreenQuantum: case MagentaQuantum: { *q=(unsigned int) ScaleQuantumToLong(p->green); break; } case BlueQuantum: case YellowQuantum: { *q=(unsigned int) ScaleQuantumToLong(p->blue); break; } case AlphaQuantum: { *q=(unsigned int) ScaleQuantumToLong((Quantum) (QuantumRange- p->opacity)); break; } case OpacityQuantum: { *q=(unsigned int) ScaleQuantumToLong(p->opacity); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=(unsigned int) ScaleQuantumToLong(indexes[x]); break; } case IndexQuantum: { *q=(unsigned int) ScaleQuantumToLong(PixelIntensityToQuantum(p)); break; } default: *q=0; } q++; } p++; } break; } case LongPixel: { register unsigned long *q; q=(unsigned long *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->blue); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->red); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->blue); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->red); *q++=ScaleQuantumToLong((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->blue); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->red); *q++=0; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(PixelIntensityToQuantum(p)); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->red); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->blue); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->red); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->blue); *q++=ScaleQuantumToLong((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToLong(p->red); *q++=ScaleQuantumToLong(p->green); *q++=ScaleQuantumToLong(p->blue); *q++=0; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=ScaleQuantumToLong(p->red); break; } case GreenQuantum: case MagentaQuantum: { *q=ScaleQuantumToLong(p->green); break; } case BlueQuantum: case YellowQuantum: { *q=ScaleQuantumToLong(p->blue); break; } case AlphaQuantum: { *q=ScaleQuantumToLong((Quantum) (QuantumRange-p->opacity)); break; } case OpacityQuantum: { *q=ScaleQuantumToLong(p->opacity); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=ScaleQuantumToLong(indexes[x]); break; } case IndexQuantum: { *q=ScaleQuantumToLong(PixelIntensityToQuantum(p)); break; } default: break; } q++; } p++; } break; } case QuantumPixel: { register Quantum *q; q=(Quantum *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->blue; *q++=p->green; *q++=p->red; p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->blue; *q++=p->green; *q++=p->red; *q++=(Quantum) (QuantumRange-p->opacity); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->blue; *q++=p->green; *q++=p->red; *q++=0; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=PixelIntensityToQuantum(p); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->red; *q++=p->green; *q++=p->blue; p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->red; *q++=p->green; *q++=p->blue; *q++=(Quantum) (QuantumRange-p->opacity); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=p->red; *q++=p->green; *q++=p->blue; *q++=0U; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=(Quantum) 0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=p->red; break; } case GreenQuantum: case MagentaQuantum: { *q=p->green; break; } case BlueQuantum: case YellowQuantum: { *q=p->blue; break; } case AlphaQuantum: { *q=(Quantum) (QuantumRange-p->opacity); break; } case OpacityQuantum: { *q=p->opacity; break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=indexes[x]; break; } case IndexQuantum: { *q=(PixelIntensityToQuantum(p)); break; } default: *q=0; } q++; } p++; } break; } case ShortPixel: { register unsigned short *q; q=(unsigned short *) stream_info->pixels; if (LocaleCompare(stream_info->map,"BGR") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->blue); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->red); p++; } break; } if (LocaleCompare(stream_info->map,"BGRA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->blue); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->red); *q++=ScaleQuantumToShort((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"BGRP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->blue); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->red); *q++=0; p++; } break; } if (LocaleCompare(stream_info->map,"I") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(PixelIntensityToQuantum(p)); p++; } break; } if (LocaleCompare(stream_info->map,"RGB") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->red); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->blue); p++; } break; } if (LocaleCompare(stream_info->map,"RGBA") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->red); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->blue); *q++=ScaleQuantumToShort((Quantum) (QuantumRange-p->opacity)); p++; } break; } if (LocaleCompare(stream_info->map,"RGBP") == 0) { p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; for (x=0; x < (long) GetPixelCacheArea(image); x++) { *q++=ScaleQuantumToShort(p->red); *q++=ScaleQuantumToShort(p->green); *q++=ScaleQuantumToShort(p->blue); *q++=0; p++; } break; } p=GetPixels(image); if (p == (const PixelPacket *) NULL) break; indexes=GetIndexes(image); for (x=0; x < (long) GetPixelCacheArea(image); x++) { for (i=0; i < (long) length; i++) { *q=0; switch (quantum_map[i]) { case RedQuantum: case CyanQuantum: { *q=ScaleQuantumToShort(p->red); break; } case GreenQuantum: case MagentaQuantum: { *q=ScaleQuantumToShort(p->green); break; } case BlueQuantum: case YellowQuantum: { *q=ScaleQuantumToShort(p->blue); break; } case AlphaQuantum: { *q=ScaleQuantumToShort((Quantum) (QuantumRange-p->opacity)); break; } case OpacityQuantum: { *q=ScaleQuantumToShort(p->opacity); break; } case BlackQuantum: { if (image->colorspace == CMYKColorspace) *q=ScaleQuantumToShort(indexes[x]); break; } case IndexQuantum: { *q=ScaleQuantumToShort(PixelIntensityToQuantum(p)); break; } default: break; } q++; } p++; } break; } default: { quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); (void) ThrowMagickException(exception,GetMagickModule(),OptionError, "UnrecognizedPixelMap","`%s'",stream_info->map); break; } } quantum_map=(QuantumType *) RelinquishMagickMemory(quantum_map); return(MagickTrue); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % + S y n c P i x e l S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % SyncPixelStream() calls the user supplied callback method with the latest % stream of pixels. % % The format of the SyncPixelStream method is: % % MagickBooleanType SyncPixelStream(Image *image) % % A description of each parameter follows: % % o image: The image. % */ static MagickBooleanType SyncPixelStream(Image *image) { CacheInfo *cache_info; size_t length; StreamHandler stream_handler; assert(image != (Image *) NULL); assert(image->signature == MagickSignature); if (image->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); cache_info=(CacheInfo *) image->cache; assert(cache_info->signature == MagickSignature); stream_handler=GetBlobStreamHandler(image); if (stream_handler == (StreamHandler) NULL) { (void) ThrowMagickException(&image->exception,GetMagickModule(), StreamError,"NoStreamHandlerIsDefined","`%s'",image->filename); return(MagickFalse); } length=stream_handler(image,cache_info->pixels,(size_t) cache_info->columns); return(length == cache_info->columns ? MagickTrue : MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e S t r e a m % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteStream() makes the image pixels available to a user supplied % callback method immediately upon writing pixel data with the WriteImage() % method. % % The format of the WriteStream() method is: % % MagickBooleanType WriteStream(const ImageInfo *image_info,Image *, % StreamHandler stream) % % A description of each parameter follows: % % o image_info: The image info. % % o stream: A callback method. % */ MagickExport MagickBooleanType WriteStream(const ImageInfo *image_info, Image *image,StreamHandler stream) { ImageInfo *write_info; MagickBooleanType status; assert(image_info != (ImageInfo *) NULL); assert(image_info->signature == MagickSignature); if (image_info->debug != MagickFalse) (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s", image_info->filename); assert(image != (Image *) NULL); assert(image->signature == MagickSignature); write_info=CloneImageInfo(image_info); write_info->stream=stream; status=WriteImage(write_info,image); write_info=DestroyImageInfo(write_info); return(status); }