| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 % |
| % % |
| % % |
| % MagickCore Pixel Stream Methods % |
| % % |
| % Software Design % |
| % John Cristy % |
| % March 2000 % |
| % % |
| % % |
| % Copyright 1999-2013 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 "MagickCore/studio.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/cache-private.h" |
| #include "MagickCore/color-private.h" |
| #include "MagickCore/composite-private.h" |
| #include "MagickCore/constitute.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/exception-private.h" |
| #include "MagickCore/geometry.h" |
| #include "MagickCore/memory_.h" |
| #include "MagickCore/memory-private.h" |
| #include "MagickCore/pixel.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/quantum.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/semaphore.h" |
| #include "MagickCore/stream.h" |
| #include "MagickCore/stream-private.h" |
| #include "MagickCore/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; |
| |
| ssize_t |
| y; |
| |
| ExceptionInfo |
| *exception; |
| |
| const void |
| *client_data; |
| |
| size_t |
| signature; |
| }; |
| |
| /* |
| Declare pixel cache interfaces. |
| */ |
| #if defined(__cplusplus) || defined(c_plusplus) |
| extern "C" { |
| #endif |
| |
| static const Quantum |
| *GetVirtualPixelStream(const Image *,const VirtualPixelMethod,const ssize_t, |
| const ssize_t,const size_t,const size_t,ExceptionInfo *); |
| |
| static MagickBooleanType |
| StreamImagePixels(const StreamInfo *,const Image *,ExceptionInfo *), |
| SyncAuthenticPixelsStream(Image *,ExceptionInfo *); |
| |
| static Quantum |
| *QueueAuthenticPixelsStream(Image *,const ssize_t,const ssize_t,const size_t, |
| const size_t,ExceptionInfo *); |
| |
| #if defined(__cplusplus) || defined(c_plusplus) |
| } |
| #endif |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + 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, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image_info: the image info. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| MagickExport StreamInfo *AcquireStreamInfo(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| 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 *) MagickAssumeAligned( |
| AcquireAlignedMemory(1,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=AcquireImage(image_info,exception); |
| 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) RelinquishAlignedMemory(cache_info->pixels); |
| else |
| (void) UnmapBlob(cache_info->pixels,(size_t) cache_info->length); |
| cache_info->pixels=(Quantum *) NULL; |
| cache_info->metacontent=(void *) NULL; |
| cache_info->length=0; |
| cache_info->mapped=MagickFalse; |
| } |
| |
| 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; |
| LockSemaphoreInfo(cache_info->semaphore); |
| cache_info->reference_count--; |
| if (cache_info->reference_count == 0) |
| destroy=MagickTrue; |
| UnlockSemaphoreInfo(cache_info->semaphore); |
| if (destroy == MagickFalse) |
| return; |
| RelinquishStreamPixels(cache_info); |
| if (cache_info->nexus_info != (NexusInfo **) NULL) |
| cache_info->nexus_info=DestroyPixelCacheNexus(cache_info->nexus_info, |
| cache_info->number_threads); |
| if (cache_info->file_semaphore != (SemaphoreInfo *) NULL) |
| DestroySemaphoreInfo(&cache_info->file_semaphore); |
| if (cache_info->semaphore != (SemaphoreInfo *) NULL) |
| 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 *) RelinquishAlignedMemory( |
| stream_info->pixels); |
| if (stream_info->stream != (Image *) NULL) |
| { |
| (void) CloseBlob(stream_info->stream); |
| stream_info->stream=DestroyImage(stream_info->stream); |
| } |
| if (stream_info->quantum_info != (QuantumInfo *) NULL) |
| stream_info->quantum_info=DestroyQuantumInfo(stream_info->quantum_info); |
| stream_info->signature=(~MagickSignature); |
| stream_info=(StreamInfo *) RelinquishMagickMemory(stream_info); |
| return(stream_info); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t A u t h e n t i c M e t a c o n t e n t F r o m S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetAuthenticMetacontentFromStream() returns the metacontent corresponding |
| % with the last call to QueueAuthenticPixelsStream() or |
| % GetAuthenticPixelsStream(). |
| % |
| % The format of the GetAuthenticMetacontentFromStream() method is: |
| % |
| % void *GetAuthenticMetacontentFromStream(const Image *image) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| */ |
| static void *GetAuthenticMetacontentFromStream(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->metacontent); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t A u t h e n t i c P i x e l S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetAuthenticPixelsStream() 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 GetAuthenticPixelsStream() method is: |
| % |
| % Quantum *GetAuthenticPixelsStream(Image *image,const ssize_t x, |
| % const ssize_t y,const size_t columns,const size_t rows, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % 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 Quantum *GetAuthenticPixelsStream(Image *image,const ssize_t x, |
| const ssize_t y,const size_t columns,const size_t rows, |
| ExceptionInfo *exception) |
| { |
| Quantum |
| *pixels; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| pixels=QueueAuthenticPixelsStream(image,x,y,columns,rows,exception); |
| return(pixels); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t A u t h e n t i c P i x e l F r o m S t e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetAuthenticPixelsFromStream() returns the pixels associated with the last |
| % call to QueueAuthenticPixelsStream() or GetAuthenticPixelsStream(). |
| % |
| % The format of the GetAuthenticPixelsFromStream() method is: |
| % |
| % Quantum *GetAuthenticPixelsFromStream(const Image image) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| */ |
| static Quantum *GetAuthenticPixelsFromStream(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 O n e A u t h e n t i c P i x e l F r o m S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetOneAuthenticPixelFromStream() returns a single pixel at the specified |
| % (x,y) location. The image background color is returned if an error occurs. |
| % |
| % The format of the GetOneAuthenticPixelFromStream() method is: |
| % |
| % MagickBooleanType GetOneAuthenticPixelFromStream(const Image image, |
| % const ssize_t x,const ssize_t y,Quantum *pixel, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o pixel: return a pixel at the specified (x,y) location. |
| % |
| % o x,y: These values define the location of the pixel to return. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType GetOneAuthenticPixelFromStream(Image *image, |
| const ssize_t x,const ssize_t y,Quantum *pixel,ExceptionInfo *exception) |
| { |
| register Quantum |
| *q; |
| |
| register ssize_t |
| i; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| (void) memset(pixel,0,MaxPixelChannels*sizeof(*pixel)); |
| q=GetAuthenticPixelsStream(image,x,y,1,1,exception); |
| if (q != (Quantum *) NULL) |
| { |
| pixel[RedPixelChannel]=ClampToQuantum(image->background_color.red); |
| pixel[GreenPixelChannel]=ClampToQuantum(image->background_color.green); |
| pixel[BluePixelChannel]=ClampToQuantum(image->background_color.blue); |
| pixel[BlackPixelChannel]=ClampToQuantum(image->background_color.black); |
| pixel[AlphaPixelChannel]=ClampToQuantum(image->background_color.alpha); |
| return(MagickFalse); |
| } |
| for (i=0; i < (ssize_t) GetPixelChannels(image); i++) |
| { |
| PixelChannel |
| channel; |
| |
| channel=GetPixelChannelChannel(image,i); |
| pixel[channel]=q[i]; |
| } |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t O n e V i r t u a l P i x e l F r o m S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetOneVirtualPixelFromStream() returns a single pixel at the specified |
| % (x.y) location. The image background color is returned if an error occurs. |
| % |
| % The format of the GetOneVirtualPixelFromStream() method is: |
| % |
| % MagickBooleanType GetOneVirtualPixelFromStream(const Image image, |
| % const VirtualPixelMethod virtual_pixel_method,const ssize_t x, |
| % const ssize_t y,Quantum *pixel,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % 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 pixel: return a pixel at the specified (x,y) location. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType GetOneVirtualPixelFromStream(const Image *image, |
| const VirtualPixelMethod virtual_pixel_method,const ssize_t x,const ssize_t y, |
| Quantum *pixel,ExceptionInfo *exception) |
| { |
| const Quantum |
| *p; |
| |
| register ssize_t |
| i; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| (void) memset(pixel,0,MaxPixelChannels*sizeof(*pixel)); |
| p=GetVirtualPixelStream(image,virtual_pixel_method,x,y,1,1,exception); |
| if (p == (const Quantum *) NULL) |
| { |
| pixel[RedPixelChannel]=ClampToQuantum(image->background_color.red); |
| pixel[GreenPixelChannel]=ClampToQuantum(image->background_color.green); |
| pixel[BluePixelChannel]=ClampToQuantum(image->background_color.blue); |
| pixel[BlackPixelChannel]=ClampToQuantum(image->background_color.black); |
| pixel[AlphaPixelChannel]=ClampToQuantum(image->background_color.alpha); |
| return(MagickFalse); |
| } |
| for (i=0; i < (ssize_t) GetPixelChannels(image); i++) |
| { |
| PixelChannel |
| channel; |
| |
| channel=GetPixelChannelChannel(image,i); |
| pixel[channel]=p[i]; |
| } |
| return(MagickTrue); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + 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 GetStreamInfoClientData method is: |
| % |
| % const void *GetStreamInfoClientData(StreamInfo *stream_info) |
| % |
| % A description of each parameter follows: |
| % |
| % o stream_info: the stream info. |
| % |
| */ |
| MagickPrivate const void *GetStreamInfoClientData(StreamInfo *stream_info) |
| { |
| assert(stream_info != (StreamInfo *) NULL); |
| assert(stream_info->signature == MagickSignature); |
| return(stream_info->client_data); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t V i r t u a l P i x e l s F r o m S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetVirtualPixelsStream() returns the pixels associated with the last |
| % call to QueueAuthenticPixelsStream() or GetVirtualPixelStream(). |
| % |
| % The format of the GetVirtualPixelsStream() method is: |
| % |
| % const Quantum *GetVirtualPixelsStream(const Image *image) |
| % |
| % A description of each parameter follows: |
| % |
| % o pixels: return the pixels associated corresponding with the last call to |
| % QueueAuthenticPixelsStream() or GetVirtualPixelStream(). |
| % |
| % o image: the image. |
| % |
| */ |
| static const Quantum *GetVirtualPixelsStream(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 V i r t u a l I n d e x e s F r o m S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetVirtualMetacontentFromStream() returns the associated pixel channels |
| % corresponding with the last call to QueueAuthenticPixelsStream() or |
| % GetVirtualPixelStream(). |
| % |
| % The format of the GetVirtualMetacontentFromStream() method is: |
| % |
| % const void *GetVirtualMetacontentFromStream(const Image *image) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| */ |
| static const void *GetVirtualMetacontentFromStream(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->metacontent); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G e t V i r t u a l P i x e l S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GetVirtualPixelStream() 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 GetVirtualPixelStream() method is: |
| % |
| % const Quantum *GetVirtualPixelStream(const Image *image, |
| % const VirtualPixelMethod virtual_pixel_method,const ssize_t x, |
| % const ssize_t y,const size_t columns,const size_t rows, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o 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 MagickBooleanType AcquireStreamPixels(CacheInfo *cache_info, |
| ExceptionInfo *exception) |
| { |
| if (cache_info->length != (MagickSizeType) ((size_t) cache_info->length)) |
| return(MagickFalse); |
| cache_info->mapped=MagickFalse; |
| cache_info->pixels=(Quantum *) AcquireAlignedMemory(1,(size_t) |
| cache_info->length); |
| if (cache_info->pixels == (Quantum *) NULL) |
| { |
| cache_info->mapped=MagickTrue; |
| cache_info->pixels=(Quantum *) MapBlob(-1,IOMode,0,(size_t) |
| cache_info->length); |
| } |
| if (cache_info->pixels == (Quantum *) NULL) |
| { |
| (void) ThrowMagickException(exception,GetMagickModule(), |
| ResourceLimitError,"MemoryAllocationFailed","`%s'", |
| cache_info->filename); |
| return(MagickFalse); |
| } |
| return(MagickTrue); |
| } |
| |
| static const Quantum *GetVirtualPixelStream(const Image *image, |
| const VirtualPixelMethod magick_unused(virtual_pixel_method),const ssize_t x, |
| const ssize_t y,const size_t columns,const size_t rows, |
| ExceptionInfo *exception) |
| { |
| CacheInfo |
| *cache_info; |
| |
| MagickBooleanType |
| status; |
| |
| 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+(ssize_t) columns) > (ssize_t) image->columns) || |
| ((y+(ssize_t) rows) > (ssize_t) image->rows) || |
| (columns == 0) || (rows == 0)) |
| { |
| (void) ThrowMagickException(exception,GetMagickModule(),StreamError, |
| "ImageDoesNotContainTheStreamGeometry","`%s'",image->filename); |
| return((Quantum *) NULL); |
| } |
| cache_info=(CacheInfo *) image->cache; |
| assert(cache_info->signature == MagickSignature); |
| /* |
| Pixels are stored in a temporary buffer until they are synced to the cache. |
| */ |
| number_pixels=(MagickSizeType) columns*rows; |
| length=(size_t) number_pixels*cache_info->number_channels*sizeof(Quantum); |
| if (cache_info->number_channels == 0) |
| length=number_pixels*sizeof(Quantum); |
| if (cache_info->metacontent_extent != 0) |
| length+=number_pixels*cache_info->metacontent_extent; |
| if (cache_info->pixels == (Quantum *) NULL) |
| { |
| cache_info->length=length; |
| status=AcquireStreamPixels(cache_info,exception); |
| if (status == MagickFalse) |
| { |
| cache_info->length=0; |
| return((Quantum *) NULL); |
| } |
| } |
| else |
| if (cache_info->length != length) |
| { |
| RelinquishStreamPixels(cache_info); |
| cache_info->length=length; |
| status=AcquireStreamPixels(cache_info,exception); |
| if (status == MagickFalse) |
| { |
| cache_info->length=0; |
| return((Quantum *) NULL); |
| } |
| } |
| cache_info->metacontent=(void *) NULL; |
| if (cache_info->metacontent_extent != 0) |
| cache_info->metacontent=(void *) (cache_info->pixels+number_pixels* |
| cache_info->number_channels); |
| return(cache_info->pixels); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + 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); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + Q u e u e A u t h e n t i c P i x e l s S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % QueueAuthenticPixelsStream() 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 |
| % SyncAuthenticPixelsStream(). A pointer to the pixels is returned if the |
| % pixels are transferred, otherwise a NULL is returned. |
| % |
| % The format of the QueueAuthenticPixelsStream() method is: |
| % |
| % Quantum *QueueAuthenticPixelsStream(Image *image,const ssize_t x, |
| % const ssize_t y,const size_t columns,const size_t rows, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o x,y,columns,rows: These values define the perimeter of a region of |
| % pixels. |
| % |
| */ |
| static Quantum *QueueAuthenticPixelsStream(Image *image,const ssize_t x, |
| const ssize_t y,const size_t columns,const size_t rows, |
| ExceptionInfo *exception) |
| { |
| CacheInfo |
| *cache_info; |
| |
| MagickBooleanType |
| status; |
| |
| MagickSizeType |
| number_pixels; |
| |
| size_t |
| length; |
| |
| StreamHandler |
| stream_handler; |
| |
| /* |
| Validate pixel cache geometry. |
| */ |
| assert(image != (Image *) NULL); |
| if ((x < 0) || (y < 0) || |
| ((x+(ssize_t) columns) > (ssize_t) image->columns) || |
| ((y+(ssize_t) rows) > (ssize_t) image->rows) || |
| (columns == 0) || (rows == 0)) |
| { |
| (void) ThrowMagickException(exception,GetMagickModule(),StreamError, |
| "ImageDoesNotContainTheStreamGeometry","`%s'",image->filename); |
| return((Quantum *) NULL); |
| } |
| stream_handler=GetBlobStreamHandler(image); |
| if (stream_handler == (StreamHandler) NULL) |
| { |
| (void) ThrowMagickException(exception,GetMagickModule(),StreamError, |
| "NoStreamHandlerIsDefined","`%s'",image->filename); |
| return((Quantum *) NULL); |
| } |
| cache_info=(CacheInfo *) image->cache; |
| assert(cache_info->signature == MagickSignature); |
| if ((image->storage_class != GetPixelCacheStorageClass(image->cache)) || |
| (image->colorspace != GetPixelCacheColorspace(image->cache))) |
| { |
| if (GetPixelCacheStorageClass(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*cache_info->number_channels*sizeof(Quantum); |
| if (cache_info->number_channels == 0) |
| length=number_pixels*sizeof(Quantum); |
| if (cache_info->metacontent_extent != 0) |
| length+=number_pixels*cache_info->metacontent_extent; |
| if (cache_info->pixels == (Quantum *) NULL) |
| { |
| cache_info->length=length; |
| status=AcquireStreamPixels(cache_info,exception); |
| if (status == MagickFalse) |
| { |
| cache_info->length=0; |
| return((Quantum *) NULL); |
| } |
| } |
| else |
| if (cache_info->length < length) |
| { |
| RelinquishStreamPixels(cache_info); |
| cache_info->length=length; |
| status=AcquireStreamPixels(cache_info,exception); |
| if (status == MagickFalse) |
| { |
| cache_info->length=0; |
| return((Quantum *) NULL); |
| } |
| } |
| cache_info->metacontent=(void *) NULL; |
| if (cache_info->metacontent_extent != 0) |
| cache_info->metacontent=(void *) (cache_info->pixels+number_pixels* |
| cache_info->number_channels); |
| return(cache_info->pixels); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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); |
| read_info->cache=AcquirePixelCache(0); |
| GetPixelCacheMethods(&cache_methods); |
| cache_methods.get_virtual_pixel_handler=GetVirtualPixelStream; |
| cache_methods.get_virtual_metacontent_from_handler= |
| GetVirtualMetacontentFromStream; |
| cache_methods.get_virtual_pixels_handler=GetVirtualPixelsStream; |
| cache_methods.get_authentic_pixels_handler=GetAuthenticPixelsStream; |
| cache_methods.queue_authentic_pixels_handler=QueueAuthenticPixelsStream; |
| cache_methods.sync_authentic_pixels_handler=SyncAuthenticPixelsStream; |
| cache_methods.get_authentic_pixels_from_handler=GetAuthenticPixelsFromStream; |
| cache_methods.get_authentic_metacontent_from_handler= |
| GetAuthenticMetacontentFromStream; |
| cache_methods.get_one_virtual_pixel_from_handler=GetOneVirtualPixelFromStream; |
| cache_methods.get_one_authentic_pixel_from_handler= |
| GetOneAuthenticPixelFromStream; |
| cache_methods.destroy_pixel_handler=DestroyPixelStream; |
| SetPixelCacheMethods(read_info->cache,&cache_methods); |
| read_info->stream=stream; |
| image=ReadImage(read_info,exception); |
| read_info=DestroyImageInfo(read_info); |
| return(image); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + 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. |
| % |
| */ |
| MagickPrivate 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 the StreamImage() 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) |
| { |
| CacheInfo |
| *cache_info; |
| |
| RectangleInfo |
| extract_info; |
| |
| size_t |
| length, |
| packet_size; |
| |
| ssize_t |
| count; |
| |
| StreamInfo |
| *stream_info; |
| |
| (void) pixels; |
| stream_info=(StreamInfo *) image->client_data; |
| switch (stream_info->storage_type) |
| { |
| default: packet_size=sizeof(unsigned char); break; |
| case CharPixel: packet_size=sizeof(unsigned char); break; |
| case DoublePixel: packet_size=sizeof(double); break; |
| case FloatPixel: packet_size=sizeof(float); break; |
| case LongPixel: packet_size=sizeof(unsigned int); break; |
| case LongLongPixel: packet_size=sizeof(MagickSizeType); break; |
| case QuantumPixel: packet_size=sizeof(Quantum); break; |
| case ShortPixel: packet_size=sizeof(unsigned short); break; |
| } |
| cache_info=(CacheInfo *) image->cache; |
| assert(cache_info->signature == MagickSignature); |
| packet_size*=strlen(stream_info->map); |
| length=packet_size*cache_info->columns*cache_info->rows; |
| if (image != stream_info->image) |
| { |
| ImageInfo |
| *write_info; |
| |
| /* |
| Prepare stream for writing. |
| */ |
| (void) RelinquishAlignedMemory(stream_info->pixels); |
| stream_info->pixels=(unsigned char *) AcquireAlignedMemory(1,length); |
| if (stream_info->pixels == (unsigned char *) NULL) |
| return(0); |
| (void) ResetMagickMemory(stream_info->pixels,0,length); |
| stream_info->image=image; |
| write_info=CloneImageInfo(stream_info->image_info); |
| (void) SetImageInfo(write_info,1,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 >= (ssize_t) (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->exception=exception; |
| read_info->client_data=(void *) stream_info; |
| image=ReadStream(read_info,&WriteStreamImage,exception); |
| read_info=DestroyImageInfo(read_info); |
| stream_info->quantum_info=AcquireQuantumInfo(image_info,image); |
| if (stream_info->quantum_info == (QuantumInfo *) NULL) |
| image=DestroyImage(image); |
| 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 const Quantum |
| *p; |
| |
| register ssize_t |
| i, |
| x; |
| |
| 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 < (ssize_t) 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=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelAlpha(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar((Quantum) 0); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(ClampToQuantum(GetPixelIntensity(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToChar((Quantum) (GetPixelAlpha(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToChar(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToChar((Quantum) 0); |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=ScaleQuantumToChar(GetPixelRed(image,p)); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=ScaleQuantumToChar(GetPixelGreen(image,p)); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=ScaleQuantumToChar(GetPixelBlue(image,p)); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=ScaleQuantumToChar((Quantum) (GetPixelAlpha(image,p))); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=ScaleQuantumToChar(GetPixelAlpha(image,p)); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=ScaleQuantumToChar(GetPixelBlack(image,p)); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=ScaleQuantumToChar(ClampToQuantum(GetPixelIntensity(image,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=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=0.0; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelIntensity(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=0.0; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=(double) ((QuantumScale*GetPixelBlack(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=(double) ((QuantumScale*GetPixelIntensity(image,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=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*(Quantum) (GetPixelAlpha(image,p)))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=0.0; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelIntensity(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| *q++=0.0; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelRed(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelGreen(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelBlue(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelAlpha(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=(float) ((QuantumScale*GetPixelBlack(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=(float) ((QuantumScale*GetPixelIntensity(image,p))* |
| quantum_info->scale+quantum_info->minimum); |
| break; |
| } |
| default: |
| *q=0; |
| } |
| q++; |
| } |
| p++; |
| } |
| break; |
| } |
| case LongPixel: |
| { |
| register unsigned int |
| *q; |
| |
| q=(unsigned int *) stream_info->pixels; |
| if (LocaleCompare(stream_info->map,"BGR") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLong((Quantum) (GetPixelAlpha(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| *q++=0; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(ClampToQuantum(GetPixelIntensity(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLong((Quantum) (GetPixelAlpha(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| *q++=0; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=ScaleQuantumToLong(GetPixelRed(image,p)); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=ScaleQuantumToLong(GetPixelGreen(image,p)); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=ScaleQuantumToLong(GetPixelBlue(image,p)); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=ScaleQuantumToLong((Quantum) (GetPixelAlpha(image,p))); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=ScaleQuantumToLong(GetPixelAlpha(image,p)); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=ScaleQuantumToLong(GetPixelBlack(image,p)); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=ScaleQuantumToLong(ClampToQuantum(GetPixelIntensity(image,p))); |
| break; |
| } |
| default: |
| break; |
| } |
| q++; |
| } |
| p++; |
| } |
| break; |
| } |
| case LongLongPixel: |
| { |
| register MagickSizeType |
| *q; |
| |
| q=(MagickSizeType *) stream_info->pixels; |
| if (LocaleCompare(stream_info->map,"BGR") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelAlpha(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| *q++=0U; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(ClampToQuantum( |
| GetPixelIntensity(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelAlpha(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| *q++=0U; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=ScaleQuantumToLongLong(GetPixelRed(image,p)); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=ScaleQuantumToLongLong(GetPixelGreen(image,p)); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=ScaleQuantumToLongLong(GetPixelBlue(image,p)); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=ScaleQuantumToLongLong(GetPixelAlpha(image,p)); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=ScaleQuantumToLongLong(GetPixelAlpha(image,p)); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=ScaleQuantumToLongLong(GetPixelBlack(image,p)); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=ScaleQuantumToLongLong(ClampToQuantum( |
| GetPixelIntensity(image,p))); |
| break; |
| } |
| default: |
| *q=0; |
| } |
| q++; |
| } |
| p++; |
| } |
| break; |
| } |
| case QuantumPixel: |
| { |
| register Quantum |
| *q; |
| |
| q=(Quantum *) stream_info->pixels; |
| if (LocaleCompare(stream_info->map,"BGR") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelBlue(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelRed(image,p); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelBlue(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelRed(image,p); |
| *q++=GetPixelAlpha(image,p); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelBlue(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelRed(image,p); |
| *q++=0; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ClampToQuantum(GetPixelIntensity(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelRed(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelBlue(image,p); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelRed(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelBlue(image,p); |
| *q++=GetPixelAlpha(image,p); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=GetPixelRed(image,p); |
| *q++=GetPixelGreen(image,p); |
| *q++=GetPixelBlue(image,p); |
| *q++=0U; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=(Quantum) 0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=GetPixelRed(image,p); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=GetPixelGreen(image,p); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=GetPixelBlue(image,p); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=(Quantum) (GetPixelAlpha(image,p)); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=GetPixelAlpha(image,p); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=GetPixelBlack(image,p); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=ClampToQuantum(GetPixelIntensity(image,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=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToShort((Quantum) (GetPixelAlpha(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"BGRP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| *q++=0; |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"I") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(ClampToQuantum( |
| GetPixelIntensity(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGB") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBA") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| *q++=ScaleQuantumToShort((Quantum) (GetPixelAlpha(image,p))); |
| p++; |
| } |
| break; |
| } |
| if (LocaleCompare(stream_info->map,"RGBP") == 0) |
| { |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| *q++=ScaleQuantumToShort(GetPixelRed(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| *q++=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| *q++=0; |
| p++; |
| } |
| break; |
| } |
| p=GetAuthenticPixelQueue(image); |
| if (p == (const Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) GetImageExtent(image); x++) |
| { |
| for (i=0; i < (ssize_t) length; i++) |
| { |
| *q=0; |
| switch (quantum_map[i]) |
| { |
| case RedQuantum: |
| case CyanQuantum: |
| { |
| *q=ScaleQuantumToShort(GetPixelRed(image,p)); |
| break; |
| } |
| case GreenQuantum: |
| case MagentaQuantum: |
| { |
| *q=ScaleQuantumToShort(GetPixelGreen(image,p)); |
| break; |
| } |
| case BlueQuantum: |
| case YellowQuantum: |
| { |
| *q=ScaleQuantumToShort(GetPixelBlue(image,p)); |
| break; |
| } |
| case AlphaQuantum: |
| { |
| *q=ScaleQuantumToShort(GetPixelAlpha(image,p)); |
| break; |
| } |
| case OpacityQuantum: |
| { |
| *q=ScaleQuantumToShort(GetPixelAlpha(image,p)); |
| break; |
| } |
| case BlackQuantum: |
| { |
| if (image->colorspace == CMYKColorspace) |
| *q=ScaleQuantumToShort(GetPixelBlack(image,p)); |
| break; |
| } |
| case IndexQuantum: |
| { |
| *q=ScaleQuantumToShort(ClampToQuantum( |
| GetPixelIntensity(image,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 A u t h e n t i c P i x e l s S t r e a m % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % SyncAuthenticPixelsStream() calls the user supplied callback method with |
| % the latest stream of pixels. |
| % |
| % The format of the SyncAuthenticPixelsStream method is: |
| % |
| % MagickBooleanType SyncAuthenticPixelsStream(Image *image, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType SyncAuthenticPixelsStream(Image *image, |
| ExceptionInfo *exception) |
| { |
| 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(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,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 MagickBooleanType WriteStream(const ImageInfo *image_info, |
| Image *image,StreamHandler stream,ExceptionInfo *exception) |
| { |
| 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,exception); |
| write_info=DestroyImageInfo(write_info); |
| return(status); |
| } |