*canvas;
if (channels == 1)
- destination_image->colorspace=GRAYColorspace;
+ {
+ destination_image->colorspace=GRAYColorspace;
+ InitializePixelChannelMap(destination_image);
+ }
canvas=CloneImage(source_image,0,0,MagickTrue,exception);
if (canvas == (Image *) NULL)
{
break;
}
if (channels == 1)
- destination_image->colorspace=GRAYColorspace;
- return(destination_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% C o m b i n e I m a g e s %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% CombineImages() combines one or more images into a single image. The
-% grayscale value of the pixels of each image in the sequence is assigned in
-% order to the specified channels of the combined image. The typical
-% ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.
-%
-% The format of the CombineImages method is:
-%
-% Image *CombineImages(const Image *image,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *CombineImages(const Image *image,ExceptionInfo *exception)
-{
-#define CombineImageTag "Combine/Image"
-
- CacheView
- *combine_view;
-
- Image
- *combine_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- /*
- Ensure the image are the same size.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickSignature);
- combine_image=CloneImage(image,0,0,MagickTrue,exception);
- if (combine_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(combine_image,DirectClass,exception) == MagickFalse)
- {
- combine_image=DestroyImage(combine_image);
- return((Image *) NULL);
- }
- if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
- combine_image->matte=MagickTrue;
- /*
- Combine images.
- */
- status=MagickTrue;
- progress=0;
- combine_view=AcquireCacheView(combine_image);
- for (y=0; y < (ssize_t) combine_image->rows; y++)
- {
- CacheView
- *image_view;
-
- const Image
- *next;
-
- Quantum
- *pixels;
-
- register const Quantum
- *restrict p;
-
- register Quantum
- *restrict q;
-
- register ssize_t
- i;
-
- if (status == MagickFalse)
- continue;
- pixels=GetCacheViewAuthenticPixels(combine_view,0,y,combine_image->columns,
- 1,exception);
- if (pixels == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- next=image;
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel
- channel;
-
- PixelTrait
- combine_traits,
- traits;
-
- register ssize_t
- x;
-
- if (next == (Image *) NULL)
- continue;
- channel=GetPixelChannelMapChannel(image,i);
- traits=GetPixelChannelMapTraits(image,channel);
- combine_traits=GetPixelChannelMapTraits(combine_image,channel);
- if ((traits == UndefinedPixelTrait) ||
- (combine_traits == UndefinedPixelTrait))
- continue;
- image_view=AcquireCacheView(next);
- p=GetCacheViewVirtualPixels(image_view,0,y,next->columns,1,exception);
- if (p == (const Quantum *) NULL)
- continue;
- q=pixels;
- for (x=0; x < (ssize_t) combine_image->columns; x++)
- {
- if (x < (ssize_t) image->columns)
- {
- q[i]=GetPixelGray(image,p);
- p+=GetPixelChannels(image);
- }
- q+=GetPixelChannels(combine_image);
- }
- image_view=DestroyCacheView(image_view);
- next=GetNextImageInList(next);
- if (SyncCacheViewAuthenticPixels(combine_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
- proceed=SetImageProgress(image,CombineImageTag,progress++,
- combine_image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- }
- combine_view=DestroyCacheView(combine_view);
- if (status == MagickFalse)
- combine_image=DestroyImage(combine_image);
- return(combine_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S e p a r a t e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SeparateImage() separates a channel from the image and returns it as a
-% grayscale image.
-%
-% The format of the SeparateImage method is:
-%
-% Image *SeparateImage(const Image *image,const ChannelType channel,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o channel: the image channel.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SeparateImage(const Image *image,
- const ChannelType channel_type,ExceptionInfo *exception)
-{
-#define GetChannelBit(mask,bit) (((size_t) (mask) >> (size_t) (bit)) & 0x01)
-#define SeparateImageTag "Separate/Image"
-
- CacheView
- *image_view,
- *separate_view;
-
- Image
- *separate_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- /*
- Initialize seaprate image attributes.
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickSignature);
- separate_image=CloneImage(image,image->columns,image->rows,MagickTrue,
- exception);
- if (separate_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(separate_image,DirectClass,exception) == MagickFalse)
{
- separate_image=DestroyImage(separate_image);
- return((Image *) NULL);
+ destination_image->colorspace=GRAYColorspace;
+ InitializePixelChannelMap(destination_image);
}
- separate_image->colorspace=GRAYColorspace;
- /*
- Separate image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireCacheView(image);
- separate_view=AcquireCacheView(separate_image);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- register const Quantum
- *restrict p;
-
- register Quantum
- *restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(separate_view,0,y,separate_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- register ssize_t
- i;
-
- if (GetPixelMask(image,p) != 0)
- {
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(separate_image);
- continue;
- }
- SetPixelChannel(separate_image,GrayPixelChannel,0,q);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel
- channel;
-
- PixelTrait
- traits;
-
- channel=GetPixelChannelMapChannel(image,i);
- traits=GetPixelChannelMapTraits(image,channel);
- if ((traits == UndefinedPixelTrait) ||
- (GetChannelBit(channel_type,channel) == 0))
- continue;
- SetPixelChannel(separate_image,GrayPixelChannel,p[i],q);
- }
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(separate_image);
- }
- if (SyncCacheViewAuthenticPixels(separate_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_SeparateImage)
-#endif
- proceed=SetImageProgress(image,SeparateImageTag,progress++,image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- separate_view=DestroyCacheView(separate_view);
- image_view=DestroyCacheView(image_view);
- return(separate_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S e p a r a t e I m a g e s %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SeparateImages() returns a separate grayscale image for each channel
-% specified.
-%
-% The format of the SeparateImages method is:
-%
-% MagickBooleanType SeparateImages(const Image *image,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SeparateImages(const Image *image,ExceptionInfo *exception)
-{
- Image
- *images,
- *separate_image;
-
- register ssize_t
- i;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- images=NewImageList();
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel
- channel;
-
- PixelTrait
- traits;
-
- channel=GetPixelChannelMapChannel(image,i);
- traits=GetPixelChannelMapTraits(image,channel);
- if ((traits == UndefinedPixelTrait) ||
- ((traits & UpdatePixelTrait) == 0))
- continue;
- separate_image=SeparateImage(image,(ChannelType) (1 << channel),exception);
- if (separate_image != (Image *) NULL)
- AppendImageToList(&images,separate_image);
- }
- return(images);
+ return(destination_image);
}
projects / imagemagick / commitdiff