+++ /dev/null
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% FFFFF X X %
-% F X X %
-% FFF X %
-% F X X %
-% F X X %
-% %
-% %
-% MagickCore Image Special Effects Methods %
-% %
-% Software Design %
-% Cristy %
-% October 1996 %
-% %
-% %
-% Copyright 1999-2018 ImageMagick Studio LLC, a non-profit organization %
-% dedicated to making software imaging solutions freely available. %
-% %
-% You may not use this file except in compliance with the License. You may %
-% obtain a copy of the License at %
-% %
-% https://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. %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-%
-%
-*/
-\f
-/*
- Include declarations.
-*/
-#include "MagickCore/studio.h"
-#include "MagickCore/accelerate-private.h"
-#include "MagickCore/annotate.h"
-#include "MagickCore/artifact.h"
-#include "MagickCore/attribute.h"
-#include "MagickCore/cache.h"
-#include "MagickCore/cache-view.h"
-#include "MagickCore/channel.h"
-#include "MagickCore/color.h"
-#include "MagickCore/color-private.h"
-#include "MagickCore/colorspace-private.h"
-#include "MagickCore/composite.h"
-#include "MagickCore/decorate.h"
-#include "MagickCore/distort.h"
-#include "MagickCore/draw.h"
-#include "MagickCore/effect.h"
-#include "MagickCore/enhance.h"
-#include "MagickCore/exception.h"
-#include "MagickCore/exception-private.h"
-#include "MagickCore/fx.h"
-#include "MagickCore/fx-private.h"
-#include "MagickCore/gem.h"
-#include "MagickCore/gem-private.h"
-#include "MagickCore/geometry.h"
-#include "MagickCore/layer.h"
-#include "MagickCore/list.h"
-#include "MagickCore/log.h"
-#include "MagickCore/image.h"
-#include "MagickCore/image-private.h"
-#include "MagickCore/magick.h"
-#include "MagickCore/memory_.h"
-#include "MagickCore/memory-private.h"
-#include "MagickCore/monitor.h"
-#include "MagickCore/monitor-private.h"
-#include "MagickCore/option.h"
-#include "MagickCore/pixel.h"
-#include "MagickCore/pixel-accessor.h"
-#include "MagickCore/property.h"
-#include "MagickCore/quantum.h"
-#include "MagickCore/quantum-private.h"
-#include "MagickCore/random_.h"
-#include "MagickCore/random-private.h"
-#include "MagickCore/resample.h"
-#include "MagickCore/resample-private.h"
-#include "MagickCore/resize.h"
-#include "MagickCore/resource_.h"
-#include "MagickCore/splay-tree.h"
-#include "MagickCore/statistic.h"
-#include "MagickCore/string_.h"
-#include "MagickCore/string-private.h"
-#include "MagickCore/thread-private.h"
-#include "MagickCore/transform.h"
-#include "MagickCore/transform-private.h"
-#include "MagickCore/utility.h"
-\f
-/*
- Define declarations.
-*/
-#define LeftShiftOperator 0xf5U
-#define RightShiftOperator 0xf6U
-#define LessThanEqualOperator 0xf7U
-#define GreaterThanEqualOperator 0xf8U
-#define EqualOperator 0xf9U
-#define NotEqualOperator 0xfaU
-#define LogicalAndOperator 0xfbU
-#define LogicalOrOperator 0xfcU
-#define ExponentialNotation 0xfdU
-
-struct _FxInfo
-{
- const Image
- *images;
-
- char
- *expression;
-
- FILE
- *file;
-
- SplayTreeInfo
- *colors,
- *symbols;
-
- CacheView
- **view;
-
- RandomInfo
- *random_info;
-
- ExceptionInfo
- *exception;
-};
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-+ A c q u i r e F x I n f o %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% AcquireFxInfo() allocates the FxInfo structure.
-%
-% The format of the AcquireFxInfo method is:
-%
-% FxInfo *AcquireFxInfo(Image *images,const char *expression,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o images: the image sequence.
-%
-% o expression: the expression.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickPrivate FxInfo *AcquireFxInfo(const Image *images,const char *expression,
- ExceptionInfo *exception)
-{
- char
- fx_op[2];
-
- const Image
- *next;
-
- FxInfo
- *fx_info;
-
- register ssize_t
- i;
-
- fx_info=(FxInfo *) AcquireCriticalMemory(sizeof(*fx_info));
- (void) memset(fx_info,0,sizeof(*fx_info));
- fx_info->exception=AcquireExceptionInfo();
- fx_info->images=images;
- fx_info->colors=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
- RelinquishMagickMemory);
- fx_info->symbols=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
- RelinquishMagickMemory);
- fx_info->view=(CacheView **) AcquireQuantumMemory(GetImageListLength(
- fx_info->images),sizeof(*fx_info->view));
- if (fx_info->view == (CacheView **) NULL)
- ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
- i=0;
- next=GetFirstImageInList(fx_info->images);
- for ( ; next != (Image *) NULL; next=next->next)
- {
- fx_info->view[i]=AcquireVirtualCacheView(next,exception);
- i++;
- }
- fx_info->random_info=AcquireRandomInfo();
- fx_info->expression=ConstantString(expression);
- fx_info->file=stderr;
- (void) SubstituteString(&fx_info->expression," ",""); /* compact string */
- /*
- Force right-to-left associativity for unary negation.
- */
- (void) SubstituteString(&fx_info->expression,"-","-1.0*");
- (void) SubstituteString(&fx_info->expression,"^-1.0*","^-");
- (void) SubstituteString(&fx_info->expression,"E-1.0*","E-");
- (void) SubstituteString(&fx_info->expression,"e-1.0*","e-");
- /*
- Convert compound to simple operators.
- */
- fx_op[1]='\0';
- *fx_op=(char) LeftShiftOperator;
- (void) SubstituteString(&fx_info->expression,"<<",fx_op);
- *fx_op=(char) RightShiftOperator;
- (void) SubstituteString(&fx_info->expression,">>",fx_op);
- *fx_op=(char) LessThanEqualOperator;
- (void) SubstituteString(&fx_info->expression,"<=",fx_op);
- *fx_op=(char) GreaterThanEqualOperator;
- (void) SubstituteString(&fx_info->expression,">=",fx_op);
- *fx_op=(char) EqualOperator;
- (void) SubstituteString(&fx_info->expression,"==",fx_op);
- *fx_op=(char) NotEqualOperator;
- (void) SubstituteString(&fx_info->expression,"!=",fx_op);
- *fx_op=(char) LogicalAndOperator;
- (void) SubstituteString(&fx_info->expression,"&&",fx_op);
- *fx_op=(char) LogicalOrOperator;
- (void) SubstituteString(&fx_info->expression,"||",fx_op);
- *fx_op=(char) ExponentialNotation;
- (void) SubstituteString(&fx_info->expression,"**",fx_op);
- return(fx_info);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% A d d N o i s e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% AddNoiseImage() adds random noise to the image.
-%
-% The format of the AddNoiseImage method is:
-%
-% Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
-% const double attenuate,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o channel: the channel type.
-%
-% o noise_type: The type of noise: Uniform, Gaussian, Multiplicative,
-% Impulse, Laplacian, or Poisson.
-%
-% o attenuate: attenuate the random distribution.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
- const double attenuate,ExceptionInfo *exception)
-{
-#define AddNoiseImageTag "AddNoise/Image"
-
- CacheView
- *image_view,
- *noise_view;
-
- Image
- *noise_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- RandomInfo
- **magick_restrict random_info;
-
- ssize_t
- y;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- unsigned long
- key;
-#endif
-
- /*
- Initialize noise image attributes.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
-#if defined(MAGICKCORE_OPENCL_SUPPORT)
- noise_image=AccelerateAddNoiseImage(image,noise_type,attenuate,exception);
- if (noise_image != (Image *) NULL)
- return(noise_image);
-#endif
- noise_image=CloneImage(image,0,0,MagickTrue,exception);
- if (noise_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(noise_image,DirectClass,exception) == MagickFalse)
- {
- noise_image=DestroyImage(noise_image);
- return((Image *) NULL);
- }
- /*
- Add noise in each row.
- */
- status=MagickTrue;
- progress=0;
- random_info=AcquireRandomInfoThreadSet();
- image_view=AcquireVirtualCacheView(image,exception);
- noise_view=AcquireAuthenticCacheView(noise_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- key=GetRandomSecretKey(random_info[0]);
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,noise_image,image->rows,key == ~0UL)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- const int
- id = GetOpenMPThreadId();
-
- MagickBooleanType
- sync;
-
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(noise_view,0,y,noise_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;
-
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- PixelTrait noise_traits=GetPixelChannelTraits(noise_image,channel);
- if ((traits == UndefinedPixelTrait) ||
- (noise_traits == UndefinedPixelTrait))
- continue;
- if ((noise_traits & CopyPixelTrait) != 0)
- {
- SetPixelChannel(noise_image,channel,p[i],q);
- continue;
- }
- SetPixelChannel(noise_image,channel,ClampToQuantum(
- GenerateDifferentialNoise(random_info[id],p[i],noise_type,attenuate)),
- q);
- }
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(noise_image);
- }
- sync=SyncCacheViewAuthenticPixels(noise_view,exception);
- if (sync == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_AddNoiseImage)
-#endif
- proceed=SetImageProgress(image,AddNoiseImageTag,progress++,
- image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- noise_view=DestroyCacheView(noise_view);
- image_view=DestroyCacheView(image_view);
- random_info=DestroyRandomInfoThreadSet(random_info);
- if (status == MagickFalse)
- noise_image=DestroyImage(noise_image);
- return(noise_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% B l u e S h i f t I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% BlueShiftImage() mutes the colors of the image to simulate a scene at
-% nighttime in the moonlight.
-%
-% The format of the BlueShiftImage method is:
-%
-% Image *BlueShiftImage(const Image *image,const double factor,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o factor: the shift factor.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *BlueShiftImage(const Image *image,const double factor,
- ExceptionInfo *exception)
-{
-#define BlueShiftImageTag "BlueShift/Image"
-
- CacheView
- *image_view,
- *shift_view;
-
- Image
- *shift_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- /*
- Allocate blue shift image.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- shift_image=CloneImage(image,0,0,MagickTrue,exception);
- if (shift_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(shift_image,DirectClass,exception) == MagickFalse)
- {
- shift_image=DestroyImage(shift_image);
- return((Image *) NULL);
- }
- /*
- Blue-shift DirectClass image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(image,exception);
- shift_view=AcquireAuthenticCacheView(shift_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,shift_image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- MagickBooleanType
- sync;
-
- PixelInfo
- pixel;
-
- Quantum
- quantum;
-
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(shift_view,0,y,shift_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- quantum=GetPixelRed(image,p);
- if (GetPixelGreen(image,p) < quantum)
- quantum=GetPixelGreen(image,p);
- if (GetPixelBlue(image,p) < quantum)
- quantum=GetPixelBlue(image,p);
- pixel.red=0.5*(GetPixelRed(image,p)+factor*quantum);
- pixel.green=0.5*(GetPixelGreen(image,p)+factor*quantum);
- pixel.blue=0.5*(GetPixelBlue(image,p)+factor*quantum);
- quantum=GetPixelRed(image,p);
- if (GetPixelGreen(image,p) > quantum)
- quantum=GetPixelGreen(image,p);
- if (GetPixelBlue(image,p) > quantum)
- quantum=GetPixelBlue(image,p);
- pixel.red=0.5*(pixel.red+factor*quantum);
- pixel.green=0.5*(pixel.green+factor*quantum);
- pixel.blue=0.5*(pixel.blue+factor*quantum);
- SetPixelRed(shift_image,ClampToQuantum(pixel.red),q);
- SetPixelGreen(shift_image,ClampToQuantum(pixel.green),q);
- SetPixelBlue(shift_image,ClampToQuantum(pixel.blue),q);
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(shift_image);
- }
- sync=SyncCacheViewAuthenticPixels(shift_view,exception);
- if (sync == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_BlueShiftImage)
-#endif
- proceed=SetImageProgress(image,BlueShiftImageTag,progress++,
- image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- image_view=DestroyCacheView(image_view);
- shift_view=DestroyCacheView(shift_view);
- if (status == MagickFalse)
- shift_image=DestroyImage(shift_image);
- return(shift_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% C h a r c o a l I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% CharcoalImage() creates a new image that is a copy of an existing one with
-% the edge highlighted. It allocates the memory necessary for the new Image
-% structure and returns a pointer to the new image.
-%
-% The format of the CharcoalImage method is:
-%
-% Image *CharcoalImage(const Image *image,const double radius,
-% const double sigma,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o radius: the radius of the pixel neighborhood.
-%
-% o sigma: the standard deviation of the Gaussian, in pixels.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *CharcoalImage(const Image *image,const double radius,
- const double sigma,ExceptionInfo *exception)
-{
- Image
- *charcoal_image,
- *clone_image,
- *edge_image;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- clone_image=CloneImage(image,0,0,MagickTrue,exception);
- if (clone_image == (Image *) NULL)
- return((Image *) NULL);
- edge_image=EdgeImage(clone_image,radius,exception);
- clone_image=DestroyImage(clone_image);
- if (edge_image == (Image *) NULL)
- return((Image *) NULL);
- charcoal_image=BlurImage(edge_image,radius,sigma,exception);
- edge_image=DestroyImage(edge_image);
- if (charcoal_image == (Image *) NULL)
- return((Image *) NULL);
- (void) NormalizeImage(charcoal_image,exception);
- (void) NegateImage(charcoal_image,MagickFalse,exception);
- (void) GrayscaleImage(charcoal_image,image->intensity,exception);
- return(charcoal_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% C o l o r i z e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% ColorizeImage() blends the fill color with each pixel in the image.
-% A percentage blend is specified with opacity. Control the application
-% of different color components by specifying a different percentage for
-% each component (e.g. 90/100/10 is 90% red, 100% green, and 10% blue).
-%
-% The format of the ColorizeImage method is:
-%
-% Image *ColorizeImage(const Image *image,const char *blend,
-% const PixelInfo *colorize,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o blend: A character string indicating the level of blending as a
-% percentage.
-%
-% o colorize: A color value.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *ColorizeImage(const Image *image,const char *blend,
- const PixelInfo *colorize,ExceptionInfo *exception)
-{
-#define ColorizeImageTag "Colorize/Image"
-#define Colorize(pixel,blend_percentage,colorize) \
- (((pixel)*(100.0-(blend_percentage))+(colorize)*(blend_percentage))/100.0)
-
- CacheView
- *image_view;
-
- GeometryInfo
- geometry_info;
-
- Image
- *colorize_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- MagickStatusType
- flags;
-
- PixelInfo
- blend_percentage;
-
- ssize_t
- y;
-
- /*
- Allocate colorized image.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- colorize_image=CloneImage(image,0,0,MagickTrue,exception);
- if (colorize_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(colorize_image,DirectClass,exception) == MagickFalse)
- {
- colorize_image=DestroyImage(colorize_image);
- return((Image *) NULL);
- }
- if ((IsGrayColorspace(colorize_image->colorspace) != MagickFalse) ||
- (IsPixelInfoGray(colorize) != MagickFalse))
- (void) SetImageColorspace(colorize_image,sRGBColorspace,exception);
- if ((colorize_image->alpha_trait == UndefinedPixelTrait) &&
- (colorize->alpha_trait != UndefinedPixelTrait))
- (void) SetImageAlpha(colorize_image,OpaqueAlpha,exception);
- if (blend == (const char *) NULL)
- return(colorize_image);
- GetPixelInfo(colorize_image,&blend_percentage);
- flags=ParseGeometry(blend,&geometry_info);
- blend_percentage.red=geometry_info.rho;
- blend_percentage.green=geometry_info.rho;
- blend_percentage.blue=geometry_info.rho;
- blend_percentage.black=geometry_info.rho;
- blend_percentage.alpha=(MagickRealType) TransparentAlpha;
- if ((flags & SigmaValue) != 0)
- blend_percentage.green=geometry_info.sigma;
- if ((flags & XiValue) != 0)
- blend_percentage.blue=geometry_info.xi;
- if ((flags & PsiValue) != 0)
- blend_percentage.alpha=geometry_info.psi;
- if (blend_percentage.colorspace == CMYKColorspace)
- {
- if ((flags & PsiValue) != 0)
- blend_percentage.black=geometry_info.psi;
- if ((flags & ChiValue) != 0)
- blend_percentage.alpha=geometry_info.chi;
- }
- /*
- Colorize DirectClass image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(colorize_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(colorize_image,colorize_image,colorize_image->rows,1)
-#endif
- for (y=0; y < (ssize_t) colorize_image->rows; y++)
- {
- MagickBooleanType
- sync;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- q=GetCacheViewAuthenticPixels(image_view,0,y,colorize_image->columns,1,
- exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) colorize_image->columns; x++)
- {
- register ssize_t
- i;
-
- for (i=0; i < (ssize_t) GetPixelChannels(colorize_image); i++)
- {
- PixelTrait traits = GetPixelChannelTraits(colorize_image,
- (PixelChannel) i);
- if (traits == UndefinedPixelTrait)
- continue;
- if ((traits & CopyPixelTrait) != 0)
- continue;
- SetPixelChannel(colorize_image,(PixelChannel) i,ClampToQuantum(
- Colorize(q[i],GetPixelInfoChannel(&blend_percentage,(PixelChannel) i),
- GetPixelInfoChannel(colorize,(PixelChannel) i))),q);
- }
- q+=GetPixelChannels(colorize_image);
- }
- sync=SyncCacheViewAuthenticPixels(image_view,exception);
- if (sync == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_ColorizeImage)
-#endif
- proceed=SetImageProgress(image,ColorizeImageTag,progress++,
- colorize_image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- image_view=DestroyCacheView(image_view);
- if (status == MagickFalse)
- colorize_image=DestroyImage(colorize_image);
- return(colorize_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% C o l o r M a t r i x I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% ColorMatrixImage() applies color transformation to an image. This method
-% permits saturation changes, hue rotation, luminance to alpha, and various
-% other effects. Although variable-sized transformation matrices can be used,
-% typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA
-% (or RGBA with offsets). The matrix is similar to those used by Adobe Flash
-% except offsets are in column 6 rather than 5 (in support of CMYKA images)
-% and offsets are normalized (divide Flash offset by 255).
-%
-% The format of the ColorMatrixImage method is:
-%
-% Image *ColorMatrixImage(const Image *image,
-% const KernelInfo *color_matrix,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o color_matrix: the color matrix.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-/* FUTURE: modify to make use of a MagickMatrix Mutliply function
- That should be provided in "matrix.c"
- (ASIDE: actually distorts should do this too but currently doesn't)
-*/
-
-MagickExport Image *ColorMatrixImage(const Image *image,
- const KernelInfo *color_matrix,ExceptionInfo *exception)
-{
-#define ColorMatrixImageTag "ColorMatrix/Image"
-
- CacheView
- *color_view,
- *image_view;
-
- double
- ColorMatrix[6][6] =
- {
- { 1.0, 0.0, 0.0, 0.0, 0.0, 0.0 },
- { 0.0, 1.0, 0.0, 0.0, 0.0, 0.0 },
- { 0.0, 0.0, 1.0, 0.0, 0.0, 0.0 },
- { 0.0, 0.0, 0.0, 1.0, 0.0, 0.0 },
- { 0.0, 0.0, 0.0, 0.0, 1.0, 0.0 },
- { 0.0, 0.0, 0.0, 0.0, 0.0, 1.0 }
- };
-
- Image
- *color_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- register ssize_t
- i;
-
- ssize_t
- u,
- v,
- y;
-
- /*
- Map given color_matrix, into a 6x6 matrix RGBKA and a constant
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- i=0;
- for (v=0; v < (ssize_t) color_matrix->height; v++)
- for (u=0; u < (ssize_t) color_matrix->width; u++)
- {
- if ((v < 6) && (u < 6))
- ColorMatrix[v][u]=color_matrix->values[i];
- i++;
- }
- /*
- Initialize color image.
- */
- color_image=CloneImage(image,0,0,MagickTrue,exception);
- if (color_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(color_image,DirectClass,exception) == MagickFalse)
- {
- color_image=DestroyImage(color_image);
- return((Image *) NULL);
- }
- if (image->debug != MagickFalse)
- {
- char
- format[MagickPathExtent],
- *message;
-
- (void) LogMagickEvent(TransformEvent,GetMagickModule(),
- " ColorMatrix image with color matrix:");
- message=AcquireString("");
- for (v=0; v < 6; v++)
- {
- *message='\0';
- (void) FormatLocaleString(format,MagickPathExtent,"%.20g: ",(double) v);
- (void) ConcatenateString(&message,format);
- for (u=0; u < 6; u++)
- {
- (void) FormatLocaleString(format,MagickPathExtent,"%+f ",
- ColorMatrix[v][u]);
- (void) ConcatenateString(&message,format);
- }
- (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message);
- }
- message=DestroyString(message);
- }
- /*
- Apply the ColorMatrix to image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(image,exception);
- color_view=AcquireAuthenticCacheView(color_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,color_image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- PixelInfo
- pixel;
-
- register const Quantum
- *magick_restrict p;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewAuthenticPixels(color_view,0,y,color_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- GetPixelInfo(image,&pixel);
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- register ssize_t
- v;
-
- size_t
- height;
-
- GetPixelInfoPixel(image,p,&pixel);
- height=color_matrix->height > 6 ? 6UL : color_matrix->height;
- for (v=0; v < (ssize_t) height; v++)
- {
- double
- sum;
-
- sum=ColorMatrix[v][0]*GetPixelRed(image,p)+ColorMatrix[v][1]*
- GetPixelGreen(image,p)+ColorMatrix[v][2]*GetPixelBlue(image,p);
- if (image->colorspace == CMYKColorspace)
- sum+=ColorMatrix[v][3]*GetPixelBlack(image,p);
- if (image->alpha_trait != UndefinedPixelTrait)
- sum+=ColorMatrix[v][4]*GetPixelAlpha(image,p);
- sum+=QuantumRange*ColorMatrix[v][5];
- switch (v)
- {
- case 0: pixel.red=sum; break;
- case 1: pixel.green=sum; break;
- case 2: pixel.blue=sum; break;
- case 3: pixel.black=sum; break;
- case 4: pixel.alpha=sum; break;
- default: break;
- }
- }
- SetPixelViaPixelInfo(color_image,&pixel,q);
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(color_image);
- }
- if (SyncCacheViewAuthenticPixels(color_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_ColorMatrixImage)
-#endif
- proceed=SetImageProgress(image,ColorMatrixImageTag,progress++,
- image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- color_view=DestroyCacheView(color_view);
- image_view=DestroyCacheView(image_view);
- if (status == MagickFalse)
- color_image=DestroyImage(color_image);
- return(color_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-+ D e s t r o y F x I n f o %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% DestroyFxInfo() deallocates memory associated with an FxInfo structure.
-%
-% The format of the DestroyFxInfo method is:
-%
-% ImageInfo *DestroyFxInfo(ImageInfo *fx_info)
-%
-% A description of each parameter follows:
-%
-% o fx_info: the fx info.
-%
-*/
-MagickPrivate FxInfo *DestroyFxInfo(FxInfo *fx_info)
-{
- register ssize_t
- i;
-
- fx_info->exception=DestroyExceptionInfo(fx_info->exception);
- fx_info->expression=DestroyString(fx_info->expression);
- fx_info->symbols=DestroySplayTree(fx_info->symbols);
- fx_info->colors=DestroySplayTree(fx_info->colors);
- for (i=(ssize_t) GetImageListLength(fx_info->images)-1; i >= 0; i--)
- fx_info->view[i]=DestroyCacheView(fx_info->view[i]);
- fx_info->view=(CacheView **) RelinquishMagickMemory(fx_info->view);
- fx_info->random_info=DestroyRandomInfo(fx_info->random_info);
- fx_info=(FxInfo *) RelinquishMagickMemory(fx_info);
- return(fx_info);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-+ F x E v a l u a t e C h a n n e l E x p r e s s i o n %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% FxEvaluateChannelExpression() evaluates an expression and returns the
-% results.
-%
-% The format of the FxEvaluateExpression method is:
-%
-% double FxEvaluateChannelExpression(FxInfo *fx_info,
-% const PixelChannel channel,const ssize_t x,const ssize_t y,
-% double *alpha,Exceptioninfo *exception)
-% double FxEvaluateExpression(FxInfo *fx_info,
-% double *alpha,Exceptioninfo *exception)
-%
-% A description of each parameter follows:
-%
-% o fx_info: the fx info.
-%
-% o channel: the channel.
-%
-% o x,y: the pixel position.
-%
-% o alpha: the result.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-
-static double FxChannelStatistics(FxInfo *fx_info,Image *image,
- PixelChannel channel,const char *symbol,ExceptionInfo *exception)
-{
- ChannelType
- channel_mask;
-
- char
- key[MagickPathExtent],
- statistic[MagickPathExtent];
-
- const char
- *value;
-
- register const char
- *p;
-
- channel_mask=UndefinedChannel;
- for (p=symbol; (*p != '.') && (*p != '\0'); p++) ;
- if (*p == '.')
- {
- ssize_t
- option;
-
- option=ParseCommandOption(MagickPixelChannelOptions,MagickTrue,p+1);
- if (option >= 0)
- {
- channel=(PixelChannel) option;
- channel_mask=SetPixelChannelMask(image,(ChannelType)
- (1UL << channel));
- }
- }
- (void) FormatLocaleString(key,MagickPathExtent,"%p.%.20g.%s",(void *) image,
- (double) channel,symbol);
- value=(const char *) GetValueFromSplayTree(fx_info->symbols,key);
- if (value != (const char *) NULL)
- {
- if (channel_mask != UndefinedChannel)
- (void) SetPixelChannelMask(image,channel_mask);
- return(QuantumScale*StringToDouble(value,(char **) NULL));
- }
- (void) DeleteNodeFromSplayTree(fx_info->symbols,key);
- if (LocaleNCompare(symbol,"depth",5) == 0)
- {
- size_t
- depth;
-
- depth=GetImageDepth(image,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",(double)
- depth);
- }
- if (LocaleNCompare(symbol,"kurtosis",8) == 0)
- {
- double
- kurtosis,
- skewness;
-
- (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",kurtosis);
- }
- if (LocaleNCompare(symbol,"maxima",6) == 0)
- {
- double
- maxima,
- minima;
-
- (void) GetImageRange(image,&minima,&maxima,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",maxima);
- }
- if (LocaleNCompare(symbol,"mean",4) == 0)
- {
- double
- mean,
- standard_deviation;
-
- (void) GetImageMean(image,&mean,&standard_deviation,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",mean);
- }
- if (LocaleNCompare(symbol,"minima",6) == 0)
- {
- double
- maxima,
- minima;
-
- (void) GetImageRange(image,&minima,&maxima,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",minima);
- }
- if (LocaleNCompare(symbol,"skewness",8) == 0)
- {
- double
- kurtosis,
- skewness;
-
- (void) GetImageKurtosis(image,&kurtosis,&skewness,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",skewness);
- }
- if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
- {
- double
- mean,
- standard_deviation;
-
- (void) GetImageMean(image,&mean,&standard_deviation,exception);
- (void) FormatLocaleString(statistic,MagickPathExtent,"%.20g",
- standard_deviation);
- }
- if (channel_mask != UndefinedChannel)
- (void) SetPixelChannelMask(image,channel_mask);
- (void) AddValueToSplayTree(fx_info->symbols,ConstantString(key),
- ConstantString(statistic));
- return(QuantumScale*StringToDouble(statistic,(char **) NULL));
-}
-
-static double
- FxEvaluateSubexpression(FxInfo *,const PixelChannel,const ssize_t,
- const ssize_t,const char *,const size_t,double *,ExceptionInfo *);
-
-static MagickOffsetType FxGCD(MagickOffsetType alpha,MagickOffsetType beta)
-{
- if (beta != 0)
- return(FxGCD(beta,alpha % beta));
- return(alpha);
-}
-
-static inline const char *FxSubexpression(const char *expression,
- ExceptionInfo *exception)
-{
- const char
- *subexpression;
-
- register ssize_t
- level;
-
- level=0;
- subexpression=expression;
- while ((*subexpression != '\0') &&
- ((level != 1) || (strchr(")",(int) *subexpression) == (char *) NULL)))
- {
- if (strchr("(",(int) *subexpression) != (char *) NULL)
- level++;
- else
- if (strchr(")",(int) *subexpression) != (char *) NULL)
- level--;
- subexpression++;
- }
- if (*subexpression == '\0')
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "UnbalancedParenthesis","`%s'",expression);
- return(subexpression);
-}
-
-static double FxGetSymbol(FxInfo *fx_info,const PixelChannel channel,
- const ssize_t x,const ssize_t y,const char *expression,const size_t depth,
- ExceptionInfo *exception)
-{
- char
- *q,
- symbol[MagickPathExtent];
-
- const char
- *p,
- *value;
-
- Image
- *image;
-
- MagickBooleanType
- status;
-
- PixelInfo
- pixel;
-
- double
- alpha,
- beta;
-
- PointInfo
- point;
-
- register ssize_t
- i;
-
- size_t
- level;
-
- p=expression;
- i=GetImageIndexInList(fx_info->images);
- level=0;
- point.x=(double) x;
- point.y=(double) y;
- if (isalpha((int) ((unsigned char) *(p+1))) == 0)
- {
- char
- *subexpression;
-
- subexpression=AcquireString(expression);
- if (strchr("suv",(int) *p) != (char *) NULL)
- {
- switch (*p)
- {
- case 's':
- default:
- {
- i=GetImageIndexInList(fx_info->images);
- break;
- }
- case 'u': i=0; break;
- case 'v': i=1; break;
- }
- p++;
- if (*p == '[')
- {
- level++;
- q=subexpression;
- for (p++; *p != '\0'; )
- {
- if (*p == '[')
- level++;
- else
- if (*p == ']')
- {
- level--;
- if (level == 0)
- break;
- }
- *q++=(*p++);
- }
- *q='\0';
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
- depth,&beta,exception);
- i=(ssize_t) alpha;
- if (*p != '\0')
- p++;
- }
- if (*p == '.')
- p++;
- }
- if ((*p == 'p') && (isalpha((int) ((unsigned char) *(p+1))) == 0))
- {
- p++;
- if (*p == '{')
- {
- level++;
- q=subexpression;
- for (p++; *p != '\0'; )
- {
- if (*p == '{')
- level++;
- else
- if (*p == '}')
- {
- level--;
- if (level == 0)
- break;
- }
- *q++=(*p++);
- }
- *q='\0';
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
- depth,&beta,exception);
- point.x=alpha;
- point.y=beta;
- if (*p != '\0')
- p++;
- }
- else
- if (*p == '[')
- {
- level++;
- q=subexpression;
- for (p++; *p != '\0'; )
- {
- if (*p == '[')
- level++;
- else
- if (*p == ']')
- {
- level--;
- if (level == 0)
- break;
- }
- *q++=(*p++);
- }
- *q='\0';
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
- depth,&beta,exception);
- point.x+=alpha;
- point.y+=beta;
- if (*p != '\0')
- p++;
- }
- if (*p == '.')
- p++;
- }
- subexpression=DestroyString(subexpression);
- }
- image=GetImageFromList(fx_info->images,i);
- if (image == (Image *) NULL)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "NoSuchImage","`%s'",expression);
- return(0.0);
- }
- i=GetImageIndexInList(image);
- GetPixelInfo(image,&pixel);
- status=InterpolatePixelInfo(image,fx_info->view[i],image->interpolate,
- point.x,point.y,&pixel,exception);
- (void) status;
- if ((strlen(p) > 2) && (LocaleCompare(p,"intensity") != 0) &&
- (LocaleCompare(p,"luma") != 0) && (LocaleCompare(p,"luminance") != 0) &&
- (LocaleCompare(p,"hue") != 0) && (LocaleCompare(p,"saturation") != 0) &&
- (LocaleCompare(p,"lightness") != 0))
- {
- char
- name[MagickPathExtent];
-
- (void) CopyMagickString(name,p,MagickPathExtent);
- for (q=name+(strlen(name)-1); q > name; q--)
- {
- if (*q == ')')
- break;
- if (*q == '.')
- {
- *q='\0';
- break;
- }
- }
- if ((strlen(name) > 2) &&
- (GetValueFromSplayTree(fx_info->symbols,name) == (const char *) NULL))
- {
- PixelInfo
- *color;
-
- color=(PixelInfo *) GetValueFromSplayTree(fx_info->colors,name);
- if (color != (PixelInfo *) NULL)
- {
- pixel=(*color);
- p+=strlen(name);
- }
- else
- {
- MagickBooleanType
- status;
-
- status=QueryColorCompliance(name,AllCompliance,&pixel,
- fx_info->exception);
- if (status != MagickFalse)
- {
- (void) AddValueToSplayTree(fx_info->colors,ConstantString(
- name),ClonePixelInfo(&pixel));
- p+=strlen(name);
- }
- }
- }
- }
- (void) CopyMagickString(symbol,p,MagickPathExtent);
- StripString(symbol);
- if (*symbol == '\0')
- {
- switch (channel)
- {
- case RedPixelChannel: return(QuantumScale*pixel.red);
- case GreenPixelChannel: return(QuantumScale*pixel.green);
- case BluePixelChannel: return(QuantumScale*pixel.blue);
- case BlackPixelChannel:
- {
- if (image->colorspace != CMYKColorspace)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- ImageError,"ColorSeparatedImageRequired","`%s'",
- image->filename);
- return(0.0);
- }
- return(QuantumScale*pixel.black);
- }
- case AlphaPixelChannel:
- {
- if (pixel.alpha_trait == UndefinedPixelTrait)
- return(1.0);
- alpha=(double) (QuantumScale*pixel.alpha);
- return(alpha);
- }
- case IndexPixelChannel:
- return(0.0);
- case IntensityPixelChannel:
- {
- Quantum
- quantum_pixel[MaxPixelChannels];
-
- SetPixelViaPixelInfo(image,&pixel,quantum_pixel);
- return(QuantumScale*GetPixelIntensity(image,quantum_pixel));
- }
- default:
- break;
- }
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "UnableToParseExpression","`%s'",p);
- return(0.0);
- }
- switch (*symbol)
- {
- case 'A':
- case 'a':
- {
- if (LocaleCompare(symbol,"a") == 0)
- return((QuantumScale*pixel.alpha));
- break;
- }
- case 'B':
- case 'b':
- {
- if (LocaleCompare(symbol,"b") == 0)
- return(QuantumScale*pixel.blue);
- break;
- }
- case 'C':
- case 'c':
- {
- if (LocaleNCompare(symbol,"channel",7) == 0)
- {
- GeometryInfo
- channel_info;
-
- MagickStatusType
- flags;
-
- flags=ParseGeometry(symbol+7,&channel_info);
- if (image->colorspace == CMYKColorspace)
- switch (channel)
- {
- case CyanPixelChannel:
- {
- if ((flags & RhoValue) == 0)
- return(0.0);
- return(channel_info.rho);
- }
- case MagentaPixelChannel:
- {
- if ((flags & SigmaValue) == 0)
- return(0.0);
- return(channel_info.sigma);
- }
- case YellowPixelChannel:
- {
- if ((flags & XiValue) == 0)
- return(0.0);
- return(channel_info.xi);
- }
- case BlackPixelChannel:
- {
- if ((flags & PsiValue) == 0)
- return(0.0);
- return(channel_info.psi);
- }
- case AlphaPixelChannel:
- {
- if ((flags & ChiValue) == 0)
- return(0.0);
- return(channel_info.chi);
- }
- default:
- return(0.0);
- }
- switch (channel)
- {
- case RedPixelChannel:
- {
- if ((flags & RhoValue) == 0)
- return(0.0);
- return(channel_info.rho);
- }
- case GreenPixelChannel:
- {
- if ((flags & SigmaValue) == 0)
- return(0.0);
- return(channel_info.sigma);
- }
- case BluePixelChannel:
- {
- if ((flags & XiValue) == 0)
- return(0.0);
- return(channel_info.xi);
- }
- case BlackPixelChannel:
- {
- if ((flags & ChiValue) == 0)
- return(0.0);
- return(channel_info.chi);
- }
- case AlphaPixelChannel:
- {
- if ((flags & PsiValue) == 0)
- return(0.0);
- return(channel_info.psi);
- }
- default:
- return(0.0);
- }
- }
- if (LocaleCompare(symbol,"c") == 0)
- return(QuantumScale*pixel.red);
- break;
- }
- case 'D':
- case 'd':
- {
- if (LocaleNCompare(symbol,"depth",5) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- break;
- }
- case 'E':
- case 'e':
- {
- if (LocaleCompare(symbol,"extent") == 0)
- {
- if (image->extent != 0)
- return(image->extent);
- return(GetBlobSize(image));
- }
- break;
- }
- case 'G':
- case 'g':
- {
- if (LocaleCompare(symbol,"g") == 0)
- return(QuantumScale*pixel.green);
- break;
- }
- case 'K':
- case 'k':
- {
- if (LocaleNCompare(symbol,"kurtosis",8) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- if (LocaleCompare(symbol,"k") == 0)
- {
- if (image->colorspace != CMYKColorspace)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"ColorSeparatedImageRequired","`%s'",
- image->filename);
- return(0.0);
- }
- return(QuantumScale*pixel.black);
- }
- break;
- }
- case 'H':
- case 'h':
- {
- if (LocaleCompare(symbol,"h") == 0)
- return((double) image->rows);
- if (LocaleCompare(symbol,"hue") == 0)
- {
- double
- hue,
- lightness,
- saturation;
-
- ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
- &lightness);
- return(hue);
- }
- break;
- }
- case 'I':
- case 'i':
- {
- if ((LocaleCompare(symbol,"image.depth") == 0) ||
- (LocaleCompare(symbol,"image.minima") == 0) ||
- (LocaleCompare(symbol,"image.maxima") == 0) ||
- (LocaleCompare(symbol,"image.mean") == 0) ||
- (LocaleCompare(symbol,"image.kurtosis") == 0) ||
- (LocaleCompare(symbol,"image.skewness") == 0) ||
- (LocaleCompare(symbol,"image.standard_deviation") == 0))
- return(FxChannelStatistics(fx_info,image,channel,symbol+6,exception));
- if (LocaleCompare(symbol,"image.resolution.x") == 0)
- return(image->resolution.x);
- if (LocaleCompare(symbol,"image.resolution.y") == 0)
- return(image->resolution.y);
- if (LocaleCompare(symbol,"intensity") == 0)
- {
- Quantum
- quantum_pixel[MaxPixelChannels];
-
- SetPixelViaPixelInfo(image,&pixel,quantum_pixel);
- return(QuantumScale*GetPixelIntensity(image,quantum_pixel));
- }
- if (LocaleCompare(symbol,"i") == 0)
- return((double) x);
- break;
- }
- case 'J':
- case 'j':
- {
- if (LocaleCompare(symbol,"j") == 0)
- return((double) y);
- break;
- }
- case 'L':
- case 'l':
- {
- if (LocaleCompare(symbol,"lightness") == 0)
- {
- double
- hue,
- lightness,
- saturation;
-
- ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
- &lightness);
- return(lightness);
- }
- if (LocaleCompare(symbol,"luma") == 0)
- {
- double
- luma;
-
- luma=0.212656*pixel.red+0.715158*pixel.green+0.072186*pixel.blue;
- return(QuantumScale*luma);
- }
- if (LocaleCompare(symbol,"luminance") == 0)
- {
- double
- luminence;
-
- luminence=0.212656*pixel.red+0.715158*pixel.green+0.072186*pixel.blue;
- return(QuantumScale*luminence);
- }
- break;
- }
- case 'M':
- case 'm':
- {
- if (LocaleNCompare(symbol,"maxima",6) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- if (LocaleNCompare(symbol,"mean",4) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- if (LocaleNCompare(symbol,"minima",6) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- if (LocaleCompare(symbol,"m") == 0)
- return(QuantumScale*pixel.green);
- break;
- }
- case 'N':
- case 'n':
- {
- if (LocaleCompare(symbol,"n") == 0)
- return((double) GetImageListLength(fx_info->images));
- break;
- }
- case 'O':
- case 'o':
- {
- if (LocaleCompare(symbol,"o") == 0)
- return(QuantumScale*pixel.alpha);
- break;
- }
- case 'P':
- case 'p':
- {
- if (LocaleCompare(symbol,"page.height") == 0)
- return((double) image->page.height);
- if (LocaleCompare(symbol,"page.width") == 0)
- return((double) image->page.width);
- if (LocaleCompare(symbol,"page.x") == 0)
- return((double) image->page.x);
- if (LocaleCompare(symbol,"page.y") == 0)
- return((double) image->page.y);
- break;
- }
- case 'Q':
- case 'q':
- {
- if (LocaleCompare(symbol,"quality") == 0)
- return((double) image->quality);
- break;
- }
- case 'R':
- case 'r':
- {
- if (LocaleCompare(symbol,"resolution.x") == 0)
- return(image->resolution.x);
- if (LocaleCompare(symbol,"resolution.y") == 0)
- return(image->resolution.y);
- if (LocaleCompare(symbol,"r") == 0)
- return(QuantumScale*pixel.red);
- break;
- }
- case 'S':
- case 's':
- {
- if (LocaleCompare(symbol,"saturation") == 0)
- {
- double
- hue,
- lightness,
- saturation;
-
- ConvertRGBToHSL(pixel.red,pixel.green,pixel.blue,&hue,&saturation,
- &lightness);
- return(saturation);
- }
- if (LocaleNCompare(symbol,"skewness",8) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
- return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
- break;
- }
- case 'T':
- case 't':
- {
- if (LocaleCompare(symbol,"t") == 0)
- return((double) GetImageIndexInList(fx_info->images));
- break;
- }
- case 'W':
- case 'w':
- {
- if (LocaleCompare(symbol,"w") == 0)
- return((double) image->columns);
- break;
- }
- case 'Y':
- case 'y':
- {
- if (LocaleCompare(symbol,"y") == 0)
- return(QuantumScale*pixel.blue);
- break;
- }
- case 'Z':
- case 'z':
- {
- if (LocaleCompare(symbol,"z") == 0)
- return((double) GetImageDepth(image,fx_info->exception));
- break;
- }
- default:
- break;
- }
- value=(const char *) GetValueFromSplayTree(fx_info->symbols,symbol);
- if (value != (const char *) NULL)
- return(StringToDouble(value,(char **) NULL));
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "UnableToParseExpression","`%s'",symbol);
- return(0.0);
-}
-
-static const char *FxOperatorPrecedence(const char *expression,
- ExceptionInfo *exception)
-{
- typedef enum
- {
- UndefinedPrecedence,
- NullPrecedence,
- BitwiseComplementPrecedence,
- ExponentPrecedence,
- ExponentialNotationPrecedence,
- MultiplyPrecedence,
- AdditionPrecedence,
- ShiftPrecedence,
- RelationalPrecedence,
- EquivalencyPrecedence,
- BitwiseAndPrecedence,
- BitwiseOrPrecedence,
- LogicalAndPrecedence,
- LogicalOrPrecedence,
- TernaryPrecedence,
- AssignmentPrecedence,
- CommaPrecedence,
- SeparatorPrecedence
- } FxPrecedence;
-
- FxPrecedence
- precedence,
- target;
-
- register const char
- *subexpression;
-
- register int
- c;
-
- size_t
- level;
-
- c=(-1);
- level=0;
- subexpression=(const char *) NULL;
- target=NullPrecedence;
- while ((c != '\0') && (*expression != '\0'))
- {
- precedence=UndefinedPrecedence;
- if ((isspace((int) ((unsigned char) *expression)) != 0) || (c == (int) '@'))
- {
- expression++;
- continue;
- }
- switch (*expression)
- {
- case 'A':
- case 'a':
- {
-#if defined(MAGICKCORE_HAVE_ACOSH)
- if (LocaleNCompare(expression,"acosh",5) == 0)
- {
- expression+=5;
- break;
- }
-#endif
-#if defined(MAGICKCORE_HAVE_ASINH)
- if (LocaleNCompare(expression,"asinh",5) == 0)
- {
- expression+=5;
- break;
- }
-#endif
-#if defined(MAGICKCORE_HAVE_ATANH)
- if (LocaleNCompare(expression,"atanh",5) == 0)
- {
- expression+=5;
- break;
- }
-#endif
- if (LocaleNCompare(expression,"atan2",5) == 0)
- {
- expression+=5;
- break;
- }
- break;
- }
- case 'E':
- case 'e':
- {
- if ((isdigit(c) != 0) &&
- ((LocaleNCompare(expression,"E+",2) == 0) ||
- (LocaleNCompare(expression,"E-",2) == 0)))
- {
- expression+=2; /* scientific notation */
- break;
- }
- }
- case 'J':
- case 'j':
- {
- if ((LocaleNCompare(expression,"j0",2) == 0) ||
- (LocaleNCompare(expression,"j1",2) == 0))
- {
- expression+=2;
- break;
- }
- break;
- }
- case '#':
- {
- while (isxdigit((int) ((unsigned char) *(expression+1))) != 0)
- expression++;
- break;
- }
- default:
- break;
- }
- if ((c == (int) '{') || (c == (int) '['))
- level++;
- else
- if ((c == (int) '}') || (c == (int) ']'))
- level--;
- if (level == 0)
- switch ((unsigned char) *expression)
- {
- case '~':
- case '!':
- {
- precedence=BitwiseComplementPrecedence;
- break;
- }
- case '^':
- case '@':
- {
- precedence=ExponentPrecedence;
- break;
- }
- default:
- {
- if (((c != 0) && ((isdigit(c) != 0) ||
- (strchr(")",c) != (char *) NULL))) &&
- (((islower((int) ((unsigned char) *expression)) != 0) ||
- (strchr("(",(int) ((unsigned char) *expression)) != (char *) NULL)) ||
- ((isdigit(c) == 0) &&
- (isdigit((int) ((unsigned char) *expression)) != 0))) &&
- (strchr("xy",(int) ((unsigned char) *expression)) == (char *) NULL))
- precedence=MultiplyPrecedence;
- break;
- }
- case '*':
- case '/':
- case '%':
- {
- precedence=MultiplyPrecedence;
- break;
- }
- case '+':
- case '-':
- {
- if ((strchr("(+-/*%:&^|<>~,",c) == (char *) NULL) ||
- (isalpha(c) != 0))
- precedence=AdditionPrecedence;
- break;
- }
- case LeftShiftOperator:
- case RightShiftOperator:
- {
- precedence=ShiftPrecedence;
- break;
- }
- case '<':
- case LessThanEqualOperator:
- case GreaterThanEqualOperator:
- case '>':
- {
- precedence=RelationalPrecedence;
- break;
- }
- case EqualOperator:
- case NotEqualOperator:
- {
- precedence=EquivalencyPrecedence;
- break;
- }
- case '&':
- {
- precedence=BitwiseAndPrecedence;
- break;
- }
- case '|':
- {
- precedence=BitwiseOrPrecedence;
- break;
- }
- case LogicalAndOperator:
- {
- precedence=LogicalAndPrecedence;
- break;
- }
- case LogicalOrOperator:
- {
- precedence=LogicalOrPrecedence;
- break;
- }
- case ExponentialNotation:
- {
- precedence=ExponentialNotationPrecedence;
- break;
- }
- case ':':
- case '?':
- {
- precedence=TernaryPrecedence;
- break;
- }
- case '=':
- {
- precedence=AssignmentPrecedence;
- break;
- }
- case ',':
- {
- precedence=CommaPrecedence;
- break;
- }
- case ';':
- {
- precedence=SeparatorPrecedence;
- break;
- }
- }
- if ((precedence == BitwiseComplementPrecedence) ||
- (precedence == TernaryPrecedence) ||
- (precedence == AssignmentPrecedence))
- {
- if (precedence > target)
- {
- /*
- Right-to-left associativity.
- */
- target=precedence;
- subexpression=expression;
- }
- }
- else
- if (precedence >= target)
- {
- /*
- Left-to-right associativity.
- */
- target=precedence;
- subexpression=expression;
- }
- if (strchr("(",(int) *expression) != (char *) NULL)
- expression=FxSubexpression(expression,exception);
- c=(int) (*expression++);
- }
- return(subexpression);
-}
-
-static double FxEvaluateSubexpression(FxInfo *fx_info,
- const PixelChannel channel,const ssize_t x,const ssize_t y,
- const char *expression,const size_t depth,double *beta,
- ExceptionInfo *exception)
-{
-#define FxMaxParenthesisDepth 58
-#define FxMaxSubexpressionDepth 200
-#define FxReturn(value) \
-{ \
- subexpression=DestroyString(subexpression); \
- return(value); \
-}
-
- char
- *q,
- *subexpression;
-
- double
- alpha,
- gamma;
-
- register const char
- *p;
-
- *beta=0.0;
- subexpression=AcquireString(expression);
- *subexpression='\0';
- if (depth > FxMaxSubexpressionDepth)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "UnableToParseExpression","`%s'",expression);
- FxReturn(0.0);
- }
- if (exception->severity >= ErrorException)
- FxReturn(0.0);
- while (isspace((int) ((unsigned char) *expression)) != 0)
- expression++;
- if (*expression == '\0')
- FxReturn(0.0);
- p=FxOperatorPrecedence(expression,exception);
- if (p != (const char *) NULL)
- {
- (void) CopyMagickString(subexpression,expression,(size_t)
- (p-expression+1));
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,depth+1,
- beta,exception);
- switch ((unsigned char) *p)
- {
- case '~':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- *beta=(double) (~(size_t) *beta);
- FxReturn(*beta);
- }
- case '!':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(*beta == 0.0 ? 1.0 : 0.0);
- }
- case '^':
- {
- *beta=pow(alpha,FxEvaluateSubexpression(fx_info,channel,x,y,++p,
- depth+1,beta,exception));
- FxReturn(*beta);
- }
- case '*':
- case ExponentialNotation:
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha*(*beta));
- }
- case '/':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- if (*beta == 0.0)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"DivideByZero","`%s'",expression);
- FxReturn(0.0);
- }
- FxReturn(alpha/(*beta));
- }
- case '%':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- *beta=fabs(floor((*beta)+0.5));
- if (*beta == 0.0)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"DivideByZero","`%s'",expression);
- FxReturn(0.0);
- }
- FxReturn(fmod(alpha,*beta));
- }
- case '+':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha+(*beta));
- }
- case '-':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha-(*beta));
- }
- case LeftShiftOperator:
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- if ((size_t) (gamma+0.5) >= (8*sizeof(size_t)))
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"ShiftCountOverflow","`%s'",subexpression);
- FxReturn(0.0);
- }
- *beta=(double) ((size_t) (alpha+0.5) << (size_t) (gamma+0.5));
- FxReturn(*beta);
- }
- case RightShiftOperator:
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- if ((size_t) (gamma+0.5) >= (8*sizeof(size_t)))
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"ShiftCountOverflow","`%s'",subexpression);
- FxReturn(0.0);
- }
- *beta=(double) ((size_t) (alpha+0.5) >> (size_t) (gamma+0.5));
- FxReturn(*beta);
- }
- case '<':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha < *beta ? 1.0 : 0.0);
- }
- case LessThanEqualOperator:
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha <= *beta ? 1.0 : 0.0);
- }
- case '>':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha > *beta ? 1.0 : 0.0);
- }
- case GreaterThanEqualOperator:
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha >= *beta ? 1.0 : 0.0);
- }
- case EqualOperator:
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(fabs(alpha-(*beta)) < MagickEpsilon ? 1.0 : 0.0);
- }
- case NotEqualOperator:
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(fabs(alpha-(*beta)) >= MagickEpsilon ? 1.0 : 0.0);
- }
- case '&':
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- *beta=(double) ((size_t) (alpha+0.5) & (size_t) (gamma+0.5));
- FxReturn(*beta);
- }
- case '|':
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- *beta=(double) ((size_t) (alpha+0.5) | (size_t) (gamma+0.5));
- FxReturn(*beta);
- }
- case LogicalAndOperator:
- {
- p++;
- if (alpha <= 0.0)
- {
- *beta=0.0;
- FxReturn(*beta);
- }
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,p,depth+1,beta,
- exception);
- *beta=(gamma > 0.0) ? 1.0 : 0.0;
- FxReturn(*beta);
- }
- case LogicalOrOperator:
- {
- p++;
- if (alpha > 0.0)
- {
- *beta=1.0;
- FxReturn(*beta);
- }
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,p,depth+1,beta,
- exception);
- *beta=(gamma > 0.0) ? 1.0 : 0.0;
- FxReturn(*beta);
- }
- case '?':
- {
- (void) CopyMagickString(subexpression,++p,MagickPathExtent);
- q=subexpression;
- p=StringToken(":",&q);
- if (q == (char *) NULL)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"UnableToParseExpression","`%s'",subexpression);
- FxReturn(0.0);
- }
- if (fabs(alpha) >= MagickEpsilon)
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,p,depth+1,beta,
- exception);
- else
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,q,depth+1,beta,
- exception);
- FxReturn(gamma);
- }
- case '=':
- {
- char
- numeric[MagickPathExtent];
-
- q=subexpression;
- while (isalpha((int) ((unsigned char) *q)) != 0)
- q++;
- if (*q != '\0')
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- OptionError,"UnableToParseExpression","`%s'",subexpression);
- FxReturn(0.0);
- }
- ClearMagickException(exception);
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- (void) FormatLocaleString(numeric,MagickPathExtent,"%.20g",*beta);
- (void) DeleteNodeFromSplayTree(fx_info->symbols,subexpression);
- (void) AddValueToSplayTree(fx_info->symbols,ConstantString(
- subexpression),ConstantString(numeric));
- FxReturn(*beta);
- }
- case ',':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(alpha);
- }
- case ';':
- {
- *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,beta,
- exception);
- FxReturn(*beta);
- }
- default:
- {
- gamma=alpha*FxEvaluateSubexpression(fx_info,channel,x,y,++p,depth+1,
- beta,exception);
- FxReturn(gamma);
- }
- }
- }
- if (strchr("(",(int) *expression) != (char *) NULL)
- {
- if (depth >= FxMaxParenthesisDepth)
- (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
- "ParenthesisNestedTooDeeply","`%s'",expression);
- (void) CopyMagickString(subexpression,expression+1,MagickPathExtent);
- if (strlen(subexpression) != 0)
- subexpression[strlen(subexpression)-1]='\0';
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,depth+1,
- beta,exception);
- FxReturn(gamma);
- }
- switch (*expression)
- {
- case '+':
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,depth+1,
- beta,exception);
- FxReturn(1.0*gamma);
- }
- case '-':
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,depth+1,
- beta,exception);
- FxReturn(-1.0*gamma);
- }
- case '~':
- {
- gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,depth+1,
- beta,exception);
- FxReturn((double) (~(size_t) (gamma+0.5)));
- }
- case 'A':
- case 'a':
- {
- if (LocaleNCompare(expression,"abs",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(fabs(alpha));
- }
-#if defined(MAGICKCORE_HAVE_ACOSH)
- if (LocaleNCompare(expression,"acosh",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(acosh(alpha));
- }
-#endif
- if (LocaleNCompare(expression,"acos",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(acos(alpha));
- }
-#if defined(MAGICKCORE_HAVE_J1)
- if (LocaleNCompare(expression,"airy",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- if (alpha == 0.0)
- FxReturn(1.0);
- gamma=2.0*j1((MagickPI*alpha))/(MagickPI*alpha);
- FxReturn(gamma*gamma);
- }
-#endif
-#if defined(MAGICKCORE_HAVE_ASINH)
- if (LocaleNCompare(expression,"asinh",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(asinh(alpha));
- }
-#endif
- if (LocaleNCompare(expression,"asin",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(asin(alpha));
- }
- if (LocaleNCompare(expression,"alt",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(((ssize_t) alpha) & 0x01 ? -1.0 : 1.0);
- }
- if (LocaleNCompare(expression,"atan2",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(atan2(alpha,*beta));
- }
-#if defined(MAGICKCORE_HAVE_ATANH)
- if (LocaleNCompare(expression,"atanh",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(atanh(alpha));
- }
-#endif
- if (LocaleNCompare(expression,"atan",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(atan(alpha));
- }
- if (LocaleCompare(expression,"a") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'B':
- case 'b':
- {
- if (LocaleCompare(expression,"b") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'C':
- case 'c':
- {
- if (LocaleNCompare(expression,"ceil",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(ceil(alpha));
- }
- if (LocaleNCompare(expression,"clamp",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- if (alpha < 0.0)
- FxReturn(0.0);
- if (alpha > 1.0)
- FxReturn(1.0);
- FxReturn(alpha);
- }
- if (LocaleNCompare(expression,"cosh",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(cosh(alpha));
- }
- if (LocaleNCompare(expression,"cos",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(cos(alpha));
- }
- if (LocaleCompare(expression,"c") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'D':
- case 'd':
- {
- if (LocaleNCompare(expression,"debug",5) == 0)
- {
- const char
- *type;
-
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- if (fx_info->images->colorspace == CMYKColorspace)
- switch (channel)
- {
- case CyanPixelChannel: type="cyan"; break;
- case MagentaPixelChannel: type="magenta"; break;
- case YellowPixelChannel: type="yellow"; break;
- case AlphaPixelChannel: type="opacity"; break;
- case BlackPixelChannel: type="black"; break;
- default: type="unknown"; break;
- }
- else
- switch (channel)
- {
- case RedPixelChannel: type="red"; break;
- case GreenPixelChannel: type="green"; break;
- case BluePixelChannel: type="blue"; break;
- case AlphaPixelChannel: type="opacity"; break;
- default: type="unknown"; break;
- }
- *subexpression='\0';
- if (strlen(expression) > 6)
- (void) CopyMagickString(subexpression,expression+6,
- MagickPathExtent);
- if (strlen(subexpression) > 1)
- subexpression[strlen(subexpression)-1]='\0';
- if (fx_info->file != (FILE *) NULL)
- (void) FormatLocaleFile(fx_info->file,"%s[%.20g,%.20g].%s: "
- "%s=%.*g\n",fx_info->images->filename,(double) x,(double) y,type,
- subexpression,GetMagickPrecision(),alpha);
- FxReturn(0.0);
- }
- if (LocaleNCompare(expression,"drc",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn((alpha/(*beta*(alpha-1.0)+1.0)));
- }
- break;
- }
- case 'E':
- case 'e':
- {
- if (LocaleCompare(expression,"epsilon") == 0)
- FxReturn(MagickEpsilon);
-#if defined(MAGICKCORE_HAVE_ERF)
- if (LocaleNCompare(expression,"erf",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(erf(alpha));
- }
-#endif
- if (LocaleNCompare(expression,"exp",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(exp(alpha));
- }
- if (LocaleCompare(expression,"e") == 0)
- FxReturn(2.7182818284590452354);
- break;
- }
- case 'F':
- case 'f':
- {
- if (LocaleNCompare(expression,"floor",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(floor(alpha));
- }
- break;
- }
- case 'G':
- case 'g':
- {
- if (LocaleNCompare(expression,"gauss",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- gamma=exp((-alpha*alpha/2.0))/sqrt(2.0*MagickPI);
- FxReturn(gamma);
- }
- if (LocaleNCompare(expression,"gcd",3) == 0)
- {
- MagickOffsetType
- gcd;
-
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- gcd=FxGCD((MagickOffsetType) (alpha+0.5),(MagickOffsetType) (*beta+
- 0.5));
- FxReturn((double) gcd);
- }
- if (LocaleCompare(expression,"g") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'H':
- case 'h':
- {
- if (LocaleCompare(expression,"h") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- if (LocaleCompare(expression,"hue") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- if (LocaleNCompare(expression,"hypot",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(hypot(alpha,*beta));
- }
- break;
- }
- case 'K':
- case 'k':
- {
- if (LocaleCompare(expression,"k") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'I':
- case 'i':
- {
- if (LocaleCompare(expression,"intensity") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- if (LocaleNCompare(expression,"int",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(floor(alpha));
- }
- if (LocaleNCompare(expression,"isnan",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn((double) !!IsNaN(alpha));
- }
- if (LocaleCompare(expression,"i") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'J':
- case 'j':
- {
- if (LocaleCompare(expression,"j") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
-#if defined(MAGICKCORE_HAVE_J0)
- if (LocaleNCompare(expression,"j0",2) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,
- depth+1,beta,exception);
- FxReturn(j0(alpha));
- }
-#endif
-#if defined(MAGICKCORE_HAVE_J1)
- if (LocaleNCompare(expression,"j1",2) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,
- depth+1,beta,exception);
- FxReturn(j1(alpha));
- }
-#endif
-#if defined(MAGICKCORE_HAVE_J1)
- if (LocaleNCompare(expression,"jinc",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- if (alpha == 0.0)
- FxReturn(1.0);
- gamma=(2.0*j1((MagickPI*alpha))/(MagickPI*alpha));
- FxReturn(gamma);
- }
-#endif
- break;
- }
- case 'L':
- case 'l':
- {
- if (LocaleNCompare(expression,"ln",2) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,
- depth+1,beta,exception);
- FxReturn(log(alpha));
- }
- if (LocaleNCompare(expression,"logtwo",6) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+6,
- depth+1,beta,exception);
- FxReturn(log10(alpha)/log10(2.0));
- }
- if (LocaleNCompare(expression,"log",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(log10(alpha));
- }
- if (LocaleCompare(expression,"lightness") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'M':
- case 'm':
- {
- if (LocaleCompare(expression,"MaxRGB") == 0)
- FxReturn(QuantumRange);
- if (LocaleNCompare(expression,"maxima",6) == 0)
- break;
- if (LocaleNCompare(expression,"max",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(alpha > *beta ? alpha : *beta);
- }
- if (LocaleNCompare(expression,"minima",6) == 0)
- break;
- if (LocaleNCompare(expression,"min",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(alpha < *beta ? alpha : *beta);
- }
- if (LocaleNCompare(expression,"mod",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- gamma=alpha-floor((alpha*PerceptibleReciprocal(*beta)))*(*beta);
- FxReturn(gamma);
- }
- if (LocaleCompare(expression,"m") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'N':
- case 'n':
- {
- if (LocaleNCompare(expression,"not",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn((double) (alpha < MagickEpsilon));
- }
- if (LocaleCompare(expression,"n") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'O':
- case 'o':
- {
- if (LocaleCompare(expression,"Opaque") == 0)
- FxReturn(1.0);
- if (LocaleCompare(expression,"o") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'P':
- case 'p':
- {
- if (LocaleCompare(expression,"phi") == 0)
- FxReturn(MagickPHI);
- if (LocaleCompare(expression,"pi") == 0)
- FxReturn(MagickPI);
- if (LocaleNCompare(expression,"pow",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(pow(alpha,*beta));
- }
- if (LocaleCompare(expression,"p") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'Q':
- case 'q':
- {
- if (LocaleCompare(expression,"QuantumRange") == 0)
- FxReturn(QuantumRange);
- if (LocaleCompare(expression,"QuantumScale") == 0)
- FxReturn(QuantumScale);
- break;
- }
- case 'R':
- case 'r':
- {
- if (LocaleNCompare(expression,"rand",4) == 0)
- {
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_FxEvaluateSubexpression)
-#endif
- alpha=GetPseudoRandomValue(fx_info->random_info);
- FxReturn(alpha);
- }
- if (LocaleNCompare(expression,"round",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- FxReturn(floor(alpha+0.5));
- }
- if (LocaleCompare(expression,"r") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'S':
- case 's':
- {
- if (LocaleCompare(expression,"saturation") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- if (LocaleNCompare(expression,"sign",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(alpha < 0.0 ? -1.0 : 1.0);
- }
- if (LocaleNCompare(expression,"sinc",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- if (alpha == 0)
- FxReturn(1.0);
- gamma=sin((MagickPI*alpha))/(MagickPI*alpha);
- FxReturn(gamma);
- }
- if (LocaleNCompare(expression,"sinh",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(sinh(alpha));
- }
- if (LocaleNCompare(expression,"sin",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(sin(alpha));
- }
- if (LocaleNCompare(expression,"sqrt",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(sqrt(alpha));
- }
- if (LocaleNCompare(expression,"squish",6) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+6,
- depth+1,beta,exception);
- FxReturn((1.0/(1.0+exp(-alpha))));
- }
- if (LocaleCompare(expression,"s") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'T':
- case 't':
- {
- if (LocaleNCompare(expression,"tanh",4) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,
- depth+1,beta,exception);
- FxReturn(tanh(alpha));
- }
- if (LocaleNCompare(expression,"tan",3) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,
- depth+1,beta,exception);
- FxReturn(tan(alpha));
- }
- if (LocaleCompare(expression,"Transparent") == 0)
- FxReturn(0.0);
- if (LocaleNCompare(expression,"trunc",5) == 0)
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- if (alpha >= 0.0)
- FxReturn(floor(alpha));
- FxReturn(ceil(alpha));
- }
- if (LocaleCompare(expression,"t") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'U':
- case 'u':
- {
- if (LocaleCompare(expression,"u") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'V':
- case 'v':
- {
- if (LocaleCompare(expression,"v") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'W':
- case 'w':
- {
- if (LocaleNCompare(expression,"while",5) == 0)
- {
- do
- {
- alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,
- depth+1,beta,exception);
- } while (fabs(alpha) >= MagickEpsilon);
- FxReturn(*beta);
- }
- if (LocaleCompare(expression,"w") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'Y':
- case 'y':
- {
- if (LocaleCompare(expression,"y") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- case 'Z':
- case 'z':
- {
- if (LocaleCompare(expression,"z") == 0)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- break;
- }
- default:
- break;
- }
- subexpression=DestroyString(subexpression);
- q=(char *) expression;
- alpha=InterpretSiPrefixValue(expression,&q);
- if (q == expression)
- FxReturn(FxGetSymbol(fx_info,channel,x,y,expression,depth+1,exception));
- FxReturn(alpha);
-}
-
-MagickPrivate MagickBooleanType FxEvaluateExpression(FxInfo *fx_info,
- double *alpha,ExceptionInfo *exception)
-{
- MagickBooleanType
- status;
-
- status=FxEvaluateChannelExpression(fx_info,GrayPixelChannel,0,0,alpha,
- exception);
- return(status);
-}
-
-MagickExport MagickBooleanType FxPreprocessExpression(FxInfo *fx_info,
- double *alpha,ExceptionInfo *exception)
-{
- FILE
- *file;
-
- MagickBooleanType
- status;
-
- file=fx_info->file;
- fx_info->file=(FILE *) NULL;
- status=FxEvaluateChannelExpression(fx_info,GrayPixelChannel,0,0,alpha,
- exception);
- fx_info->file=file;
- return(status);
-}
-
-MagickPrivate MagickBooleanType FxEvaluateChannelExpression(FxInfo *fx_info,
- const PixelChannel channel,const ssize_t x,const ssize_t y,
- double *alpha,ExceptionInfo *exception)
-{
- double
- beta;
-
- beta=0.0;
- *alpha=FxEvaluateSubexpression(fx_info,channel,x,y,fx_info->expression,0,
- &beta,exception);
- return(exception->severity == OptionError ? MagickFalse : MagickTrue);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% F x I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% FxImage() applies a mathematical expression to the specified image.
-%
-% The format of the FxImage method is:
-%
-% Image *FxImage(const Image *image,const char *expression,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o expression: A mathematical expression.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-
-static FxInfo **DestroyFxThreadSet(FxInfo **fx_info)
-{
- register ssize_t
- i;
-
- assert(fx_info != (FxInfo **) NULL);
- for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
- if (fx_info[i] != (FxInfo *) NULL)
- fx_info[i]=DestroyFxInfo(fx_info[i]);
- fx_info=(FxInfo **) RelinquishMagickMemory(fx_info);
- return(fx_info);
-}
-
-static FxInfo **AcquireFxThreadSet(const Image *image,const char *expression,
- ExceptionInfo *exception)
-{
- char
- *fx_expression;
-
- FxInfo
- **fx_info;
-
- double
- alpha;
-
- register ssize_t
- i;
-
- size_t
- number_threads;
-
- number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
- fx_info=(FxInfo **) AcquireQuantumMemory(number_threads,sizeof(*fx_info));
- if (fx_info == (FxInfo **) NULL)
- {
- (void) ThrowMagickException(exception,GetMagickModule(),
- ResourceLimitError,"MemoryAllocationFailed","`%s'",image->filename);
- return((FxInfo **) NULL);
- }
- (void) memset(fx_info,0,number_threads*sizeof(*fx_info));
- if (*expression != '@')
- fx_expression=ConstantString(expression);
- else
- fx_expression=FileToString(expression+1,~0UL,exception);
- for (i=0; i < (ssize_t) number_threads; i++)
- {
- MagickBooleanType
- status;
-
- fx_info[i]=AcquireFxInfo(image,fx_expression,exception);
- if (fx_info[i] == (FxInfo *) NULL)
- break;
- status=FxPreprocessExpression(fx_info[i],&alpha,exception);
- if (status == MagickFalse)
- break;
- }
- fx_expression=DestroyString(fx_expression);
- if (i < (ssize_t) number_threads)
- fx_info=DestroyFxThreadSet(fx_info);
- return(fx_info);
-}
-
-MagickExport Image *FxImage(const Image *image,const char *expression,
- ExceptionInfo *exception)
-{
-#define FxImageTag "Fx/Image"
-
- CacheView
- *fx_view,
- *image_view;
-
- FxInfo
- **magick_restrict fx_info;
-
- Image
- *fx_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- fx_info=AcquireFxThreadSet(image,expression,exception);
- if (fx_info == (FxInfo **) NULL)
- return((Image *) NULL);
- fx_image=CloneImage(image,0,0,MagickTrue,exception);
- if (fx_image == (Image *) NULL)
- {
- fx_info=DestroyFxThreadSet(fx_info);
- return((Image *) NULL);
- }
- if (SetImageStorageClass(fx_image,DirectClass,exception) == MagickFalse)
- {
- fx_info=DestroyFxThreadSet(fx_info);
- fx_image=DestroyImage(fx_image);
- return((Image *) NULL);
- }
- /*
- Fx image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(image,exception);
- fx_view=AcquireAuthenticCacheView(fx_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,fx_image,fx_image->rows,1)
-#endif
- for (y=0; y < (ssize_t) fx_image->rows; y++)
- {
- const int
- id = GetOpenMPThreadId();
-
- register const Quantum
- *magick_restrict p;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(fx_view,0,y,fx_image->columns,1,exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) fx_image->columns; x++)
- {
- register ssize_t
- i;
-
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- double
- alpha;
-
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- PixelTrait fx_traits=GetPixelChannelTraits(fx_image,channel);
- if ((traits == UndefinedPixelTrait) ||
- (fx_traits == UndefinedPixelTrait))
- continue;
- if ((fx_traits & CopyPixelTrait) != 0)
- {
- SetPixelChannel(fx_image,channel,p[i],q);
- continue;
- }
- alpha=0.0;
- (void) FxEvaluateChannelExpression(fx_info[id],channel,x,y,&alpha,
- exception);
- q[i]=ClampToQuantum(QuantumRange*alpha);
- }
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(fx_image);
- }
- if (SyncCacheViewAuthenticPixels(fx_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_FxImage)
-#endif
- proceed=SetImageProgress(image,FxImageTag,progress++,image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- fx_view=DestroyCacheView(fx_view);
- image_view=DestroyCacheView(image_view);
- fx_info=DestroyFxThreadSet(fx_info);
- if (status == MagickFalse)
- fx_image=DestroyImage(fx_image);
- return(fx_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% I m p l o d e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% ImplodeImage() creates a new image that is a copy of an existing
-% one with the image pixels "implode" by the specified percentage. It
-% allocates the memory necessary for the new Image structure and returns a
-% pointer to the new image.
-%
-% The format of the ImplodeImage method is:
-%
-% Image *ImplodeImage(const Image *image,const double amount,
-% const PixelInterpolateMethod method,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o implode_image: Method ImplodeImage returns a pointer to the image
-% after it is implode. A null image is returned if there is a memory
-% shortage.
-%
-% o image: the image.
-%
-% o amount: Define the extent of the implosion.
-%
-% o method: the pixel interpolation method.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *ImplodeImage(const Image *image,const double amount,
- const PixelInterpolateMethod method,ExceptionInfo *exception)
-{
-#define ImplodeImageTag "Implode/Image"
-
- CacheView
- *canvas_view,
- *implode_view,
- *interpolate_view;
-
- Image
- *canvas,
- *implode_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- double
- radius;
-
- PointInfo
- center,
- scale;
-
- ssize_t
- y;
-
- /*
- Initialize implode image attributes.
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- canvas=CloneImage(image,0,0,MagickTrue,exception);
- if (canvas == (Image *) NULL)
- return((Image *) NULL);
- if ((canvas->alpha_trait == UndefinedPixelTrait) &&
- (canvas->background_color.alpha != OpaqueAlpha))
- (void) SetImageAlphaChannel(canvas,OpaqueAlphaChannel,exception);
- implode_image=CloneImage(canvas,canvas->columns,canvas->rows,MagickTrue,
- exception);
- if (implode_image == (Image *) NULL)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- if (SetImageStorageClass(implode_image,DirectClass,exception) == MagickFalse)
- {
- canvas=DestroyImage(canvas);
- implode_image=DestroyImage(implode_image);
- return((Image *) NULL);
- }
- /*
- Compute scaling factor.
- */
- scale.x=1.0;
- scale.y=1.0;
- center.x=0.5*canvas->columns;
- center.y=0.5*canvas->rows;
- radius=center.x;
- if (canvas->columns > canvas->rows)
- scale.y=(double) canvas->columns/(double) canvas->rows;
- else
- if (canvas->columns < canvas->rows)
- {
- scale.x=(double) canvas->rows/(double) canvas->columns;
- radius=center.y;
- }
- /*
- Implode image.
- */
- status=MagickTrue;
- progress=0;
- canvas_view=AcquireVirtualCacheView(canvas,exception);
- interpolate_view=AcquireVirtualCacheView(canvas,exception);
- implode_view=AcquireAuthenticCacheView(implode_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(canvas,implode_image,canvas->rows,1)
-#endif
- for (y=0; y < (ssize_t) canvas->rows; y++)
- {
- double
- distance;
-
- PointInfo
- delta;
-
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(canvas_view,0,y,canvas->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(implode_view,0,y,implode_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- delta.y=scale.y*(double) (y-center.y);
- for (x=0; x < (ssize_t) canvas->columns; x++)
- {
- register ssize_t
- i;
-
- /*
- Determine if the pixel is within an ellipse.
- */
- delta.x=scale.x*(double) (x-center.x);
- distance=delta.x*delta.x+delta.y*delta.y;
- if (distance >= (radius*radius))
- for (i=0; i < (ssize_t) GetPixelChannels(canvas); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(canvas,i);
- PixelTrait traits = GetPixelChannelTraits(canvas,channel);
- PixelTrait implode_traits = GetPixelChannelTraits(implode_image,
- channel);
- if ((traits == UndefinedPixelTrait) ||
- (implode_traits == UndefinedPixelTrait))
- continue;
- SetPixelChannel(implode_image,channel,p[i],q);
- }
- else
- {
- double
- factor;
-
- /*
- Implode the pixel.
- */
- factor=1.0;
- if (distance > 0.0)
- factor=pow(sin(MagickPI*sqrt((double) distance)/radius/2),-amount);
- status=InterpolatePixelChannels(canvas,interpolate_view,implode_image,
- method,(double) (factor*delta.x/scale.x+center.x),(double) (factor*
- delta.y/scale.y+center.y),q,exception);
- if (status == MagickFalse)
- break;
- }
- p+=GetPixelChannels(canvas);
- q+=GetPixelChannels(implode_image);
- }
- if (SyncCacheViewAuthenticPixels(implode_view,exception) == MagickFalse)
- status=MagickFalse;
- if (canvas->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_ImplodeImage)
-#endif
- proceed=SetImageProgress(canvas,ImplodeImageTag,progress++,
- canvas->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- implode_view=DestroyCacheView(implode_view);
- interpolate_view=DestroyCacheView(interpolate_view);
- canvas_view=DestroyCacheView(canvas_view);
- canvas=DestroyImage(canvas);
- if (status == MagickFalse)
- implode_image=DestroyImage(implode_image);
- return(implode_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% M o r p h I m a g e s %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% The MorphImages() method requires a minimum of two images. The first
-% image is transformed into the second by a number of intervening images
-% as specified by frames.
-%
-% The format of the MorphImage method is:
-%
-% Image *MorphImages(const Image *image,const size_t number_frames,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o number_frames: Define the number of in-between image to generate.
-% The more in-between frames, the smoother the morph.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *MorphImages(const Image *image,const size_t number_frames,
- ExceptionInfo *exception)
-{
-#define MorphImageTag "Morph/Image"
-
- double
- alpha,
- beta;
-
- Image
- *morph_image,
- *morph_images;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- scene;
-
- register const Image
- *next;
-
- register ssize_t
- n;
-
- ssize_t
- y;
-
- /*
- Clone first frame in sequence.
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- morph_images=CloneImage(image,0,0,MagickTrue,exception);
- if (morph_images == (Image *) NULL)
- return((Image *) NULL);
- if (GetNextImageInList(image) == (Image *) NULL)
- {
- /*
- Morph single image.
- */
- for (n=1; n < (ssize_t) number_frames; n++)
- {
- morph_image=CloneImage(image,0,0,MagickTrue,exception);
- if (morph_image == (Image *) NULL)
- {
- morph_images=DestroyImageList(morph_images);
- return((Image *) NULL);
- }
- AppendImageToList(&morph_images,morph_image);
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
- proceed=SetImageProgress(image,MorphImageTag,(MagickOffsetType) n,
- number_frames);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- return(GetFirstImageInList(morph_images));
- }
- /*
- Morph image sequence.
- */
- status=MagickTrue;
- scene=0;
- next=image;
- for ( ; GetNextImageInList(next) != (Image *) NULL; next=GetNextImageInList(next))
- {
- for (n=0; n < (ssize_t) number_frames; n++)
- {
- CacheView
- *image_view,
- *morph_view;
-
- beta=(double) (n+1.0)/(double) (number_frames+1.0);
- alpha=1.0-beta;
- morph_image=ResizeImage(next,(size_t) (alpha*next->columns+beta*
- GetNextImageInList(next)->columns+0.5),(size_t) (alpha*next->rows+beta*
- GetNextImageInList(next)->rows+0.5),next->filter,exception);
- if (morph_image == (Image *) NULL)
- {
- morph_images=DestroyImageList(morph_images);
- return((Image *) NULL);
- }
- status=SetImageStorageClass(morph_image,DirectClass,exception);
- if (status == MagickFalse)
- {
- morph_image=DestroyImage(morph_image);
- return((Image *) NULL);
- }
- AppendImageToList(&morph_images,morph_image);
- morph_images=GetLastImageInList(morph_images);
- morph_image=ResizeImage(GetNextImageInList(next),morph_images->columns,
- morph_images->rows,GetNextImageInList(next)->filter,exception);
- if (morph_image == (Image *) NULL)
- {
- morph_images=DestroyImageList(morph_images);
- return((Image *) NULL);
- }
- image_view=AcquireVirtualCacheView(morph_image,exception);
- morph_view=AcquireAuthenticCacheView(morph_images,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(status) \
- magick_number_threads(morph_image,morph_image,morph_image->rows,1)
-#endif
- for (y=0; y < (ssize_t) morph_images->rows; y++)
- {
- MagickBooleanType
- sync;
-
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,morph_image->columns,1,
- exception);
- q=GetCacheViewAuthenticPixels(morph_view,0,y,morph_images->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) morph_images->columns; x++)
- {
- register ssize_t
- i;
-
- for (i=0; i < (ssize_t) GetPixelChannels(morph_image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(morph_image,i);
- PixelTrait traits = GetPixelChannelTraits(morph_image,channel);
- PixelTrait morph_traits=GetPixelChannelTraits(morph_images,channel);
- if ((traits == UndefinedPixelTrait) ||
- (morph_traits == UndefinedPixelTrait))
- continue;
- if ((morph_traits & CopyPixelTrait) != 0)
- {
- SetPixelChannel(morph_image,channel,p[i],q);
- continue;
- }
- SetPixelChannel(morph_image,channel,ClampToQuantum(alpha*
- GetPixelChannel(morph_images,channel,q)+beta*p[i]),q);
- }
- p+=GetPixelChannels(morph_image);
- q+=GetPixelChannels(morph_images);
- }
- sync=SyncCacheViewAuthenticPixels(morph_view,exception);
- if (sync == MagickFalse)
- status=MagickFalse;
- }
- morph_view=DestroyCacheView(morph_view);
- image_view=DestroyCacheView(image_view);
- morph_image=DestroyImage(morph_image);
- }
- if (n < (ssize_t) number_frames)
- break;
- /*
- Clone last frame in sequence.
- */
- morph_image=CloneImage(GetNextImageInList(next),0,0,MagickTrue,exception);
- if (morph_image == (Image *) NULL)
- {
- morph_images=DestroyImageList(morph_images);
- return((Image *) NULL);
- }
- AppendImageToList(&morph_images,morph_image);
- morph_images=GetLastImageInList(morph_images);
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_MorphImages)
-#endif
- proceed=SetImageProgress(image,MorphImageTag,scene,
- GetImageListLength(image));
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- scene++;
- }
- if (GetNextImageInList(next) != (Image *) NULL)
- {
- morph_images=DestroyImageList(morph_images);
- return((Image *) NULL);
- }
- return(GetFirstImageInList(morph_images));
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% P l a s m a I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% PlasmaImage() initializes an image with plasma fractal values. The image
-% must be initialized with a base color and the random number generator
-% seeded before this method is called.
-%
-% The format of the PlasmaImage method is:
-%
-% MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
-% size_t attenuate,size_t depth,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o segment: Define the region to apply plasma fractals values.
-%
-% o attenuate: Define the plasma attenuation factor.
-%
-% o depth: Limit the plasma recursion depth.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-
-static inline Quantum PlasmaPixel(RandomInfo *random_info,
- const double pixel,const double noise)
-{
- Quantum
- plasma;
-
- plasma=ClampToQuantum(pixel+noise*GetPseudoRandomValue(random_info)-
- noise/2.0);
- if (plasma <= 0)
- return((Quantum) 0);
- if (plasma >= QuantumRange)
- return(QuantumRange);
- return(plasma);
-}
-
-static MagickBooleanType PlasmaImageProxy(Image *image,CacheView *image_view,
- CacheView *u_view,CacheView *v_view,RandomInfo *random_info,
- const SegmentInfo *segment,size_t attenuate,size_t depth,
- ExceptionInfo *exception)
-{
- double
- plasma;
-
- register const Quantum
- *magick_restrict u,
- *magick_restrict v;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- i;
-
- ssize_t
- x,
- x_mid,
- y,
- y_mid;
-
- if ((fabs(segment->x2-segment->x1) <= MagickEpsilon) &&
- (fabs(segment->y2-segment->y1) <= MagickEpsilon))
- return(MagickTrue);
- if (depth != 0)
- {
- MagickBooleanType
- status;
-
- SegmentInfo
- local_info;
-
- /*
- Divide the area into quadrants and recurse.
- */
- depth--;
- attenuate++;
- x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
- y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
- local_info=(*segment);
- local_info.x2=(double) x_mid;
- local_info.y2=(double) y_mid;
- (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
- &local_info,attenuate,depth,exception);
- local_info=(*segment);
- local_info.y1=(double) y_mid;
- local_info.x2=(double) x_mid;
- (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
- &local_info,attenuate,depth,exception);
- local_info=(*segment);
- local_info.x1=(double) x_mid;
- local_info.y2=(double) y_mid;
- (void) PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
- &local_info,attenuate,depth,exception);
- local_info=(*segment);
- local_info.x1=(double) x_mid;
- local_info.y1=(double) y_mid;
- status=PlasmaImageProxy(image,image_view,u_view,v_view,random_info,
- &local_info,attenuate,depth,exception);
- return(status);
- }
- x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
- y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
- if ((fabs(segment->x1-x_mid) < MagickEpsilon) &&
- (fabs(segment->x2-x_mid) < MagickEpsilon) &&
- (fabs(segment->y1-y_mid) < MagickEpsilon) &&
- (fabs(segment->y2-y_mid) < MagickEpsilon))
- return(MagickFalse);
- /*
- Average pixels and apply plasma.
- */
- plasma=(double) QuantumRange/(2.0*attenuate);
- if ((fabs(segment->x1-x_mid) > MagickEpsilon) ||
- (fabs(segment->x2-x_mid) > MagickEpsilon))
- {
- /*
- Left pixel.
- */
- x=(ssize_t) ceil(segment->x1-0.5);
- u=GetCacheViewVirtualPixels(u_view,x,(ssize_t) ceil(segment->y1-0.5),1,1,
- exception);
- v=GetCacheViewVirtualPixels(v_view,x,(ssize_t) ceil(segment->y2-0.5),1,1,
- exception);
- q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
- if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
- (q == (Quantum *) NULL))
- return(MagickTrue);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=PlasmaPixel(random_info,(u[i]+v[i])/2.0,plasma);
- }
- (void) SyncCacheViewAuthenticPixels(image_view,exception);
- if (fabs(segment->x1-segment->x2) > MagickEpsilon)
- {
- /*
- Right pixel.
- */
- x=(ssize_t) ceil(segment->x2-0.5);
- u=GetCacheViewVirtualPixels(u_view,x,(ssize_t) ceil(segment->y1-0.5),
- 1,1,exception);
- v=GetCacheViewVirtualPixels(v_view,x,(ssize_t) ceil(segment->y2-0.5),
- 1,1,exception);
- q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
- if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
- (q == (Quantum *) NULL))
- return(MagickTrue);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=PlasmaPixel(random_info,(u[i]+v[i])/2.0,plasma);
- }
- (void) SyncCacheViewAuthenticPixels(image_view,exception);
- }
- }
- if ((fabs(segment->y1-y_mid) > MagickEpsilon) ||
- (fabs(segment->y2-y_mid) > MagickEpsilon))
- {
- if ((fabs(segment->x1-x_mid) > MagickEpsilon) ||
- (fabs(segment->y2-y_mid) > MagickEpsilon))
- {
- /*
- Bottom pixel.
- */
- y=(ssize_t) ceil(segment->y2-0.5);
- u=GetCacheViewVirtualPixels(u_view,(ssize_t) ceil(segment->x1-0.5),y,
- 1,1,exception);
- v=GetCacheViewVirtualPixels(v_view,(ssize_t) ceil(segment->x2-0.5),y,
- 1,1,exception);
- q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
- if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
- (q == (Quantum *) NULL))
- return(MagickTrue);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=PlasmaPixel(random_info,(u[i]+v[i])/2.0,plasma);
- }
- (void) SyncCacheViewAuthenticPixels(image_view,exception);
- }
- if (fabs(segment->y1-segment->y2) > MagickEpsilon)
- {
- /*
- Top pixel.
- */
- y=(ssize_t) ceil(segment->y1-0.5);
- u=GetCacheViewVirtualPixels(u_view,(ssize_t) ceil(segment->x1-0.5),y,
- 1,1,exception);
- v=GetCacheViewVirtualPixels(v_view,(ssize_t) ceil(segment->x2-0.5),y,
- 1,1,exception);
- q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
- if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
- (q == (Quantum *) NULL))
- return(MagickTrue);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=PlasmaPixel(random_info,(u[i]+v[i])/2.0,plasma);
- }
- (void) SyncCacheViewAuthenticPixels(image_view,exception);
- }
- }
- if ((fabs(segment->x1-segment->x2) > MagickEpsilon) ||
- (fabs(segment->y1-segment->y2) > MagickEpsilon))
- {
- /*
- Middle pixel.
- */
- x=(ssize_t) ceil(segment->x1-0.5);
- y=(ssize_t) ceil(segment->y1-0.5);
- u=GetCacheViewVirtualPixels(u_view,x,y,1,1,exception);
- x=(ssize_t) ceil(segment->x2-0.5);
- y=(ssize_t) ceil(segment->y2-0.5);
- v=GetCacheViewVirtualPixels(v_view,x,y,1,1,exception);
- q=QueueCacheViewAuthenticPixels(image_view,x_mid,y_mid,1,1,exception);
- if ((u == (const Quantum *) NULL) || (v == (const Quantum *) NULL) ||
- (q == (Quantum *) NULL))
- return(MagickTrue);
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=PlasmaPixel(random_info,(u[i]+v[i])/2.0,plasma);
- }
- (void) SyncCacheViewAuthenticPixels(image_view,exception);
- }
- if ((fabs(segment->x2-segment->x1) < 3.0) &&
- (fabs(segment->y2-segment->y1) < 3.0))
- return(MagickTrue);
- return(MagickFalse);
-}
-
-MagickExport MagickBooleanType PlasmaImage(Image *image,
- const SegmentInfo *segment,size_t attenuate,size_t depth,
- ExceptionInfo *exception)
-{
- CacheView
- *image_view,
- *u_view,
- *v_view;
-
- MagickBooleanType
- status;
-
- RandomInfo
- *random_info;
-
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
- if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
- return(MagickFalse);
- image_view=AcquireAuthenticCacheView(image,exception);
- u_view=AcquireVirtualCacheView(image,exception);
- v_view=AcquireVirtualCacheView(image,exception);
- random_info=AcquireRandomInfo();
- status=PlasmaImageProxy(image,image_view,u_view,v_view,random_info,segment,
- attenuate,depth,exception);
- random_info=DestroyRandomInfo(random_info);
- v_view=DestroyCacheView(v_view);
- u_view=DestroyCacheView(u_view);
- image_view=DestroyCacheView(image_view);
- return(status);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% P o l a r o i d I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% PolaroidImage() simulates a Polaroid picture.
-%
-% The format of the PolaroidImage method is:
-%
-% Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
-% const char *caption,const double angle,
-% const PixelInterpolateMethod method,ExceptionInfo exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o draw_info: the draw info.
-%
-% o caption: the Polaroid caption.
-%
-% o angle: Apply the effect along this angle.
-%
-% o method: the pixel interpolation method.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
- const char *caption,const double angle,const PixelInterpolateMethod method,
- ExceptionInfo *exception)
-{
- Image
- *bend_image,
- *caption_image,
- *flop_image,
- *picture_image,
- *polaroid_image,
- *rotate_image,
- *trim_image;
-
- size_t
- height;
-
- ssize_t
- quantum;
-
- /*
- Simulate a Polaroid picture.
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- quantum=(ssize_t) MagickMax(MagickMax((double) image->columns,(double)
- image->rows)/25.0,10.0);
- height=image->rows+2*quantum;
- caption_image=(Image *) NULL;
- if (caption != (const char *) NULL)
- {
- char
- geometry[MagickPathExtent],
- *text;
-
- DrawInfo
- *annotate_info;
-
- ImageInfo
- *image_info;
-
- MagickBooleanType
- status;
-
- ssize_t
- count;
-
- TypeMetric
- metrics;
-
- /*
- Generate caption image.
- */
- caption_image=CloneImage(image,image->columns,1,MagickTrue,exception);
- if (caption_image == (Image *) NULL)
- return((Image *) NULL);
- image_info=AcquireImageInfo();
- annotate_info=CloneDrawInfo((const ImageInfo *) NULL,draw_info);
- text=InterpretImageProperties(image_info,(Image *) image,caption,
- exception);
- image_info=DestroyImageInfo(image_info);
- (void) CloneString(&annotate_info->text,text);
- count=FormatMagickCaption(caption_image,annotate_info,MagickTrue,&metrics,
- &text,exception);
- status=SetImageExtent(caption_image,image->columns,(size_t) ((count+1)*
- (metrics.ascent-metrics.descent)+0.5),exception);
- if (status == MagickFalse)
- caption_image=DestroyImage(caption_image);
- else
- {
- caption_image->background_color=image->border_color;
- (void) SetImageBackgroundColor(caption_image,exception);
- (void) CloneString(&annotate_info->text,text);
- (void) FormatLocaleString(geometry,MagickPathExtent,"+0+%.20g",
- metrics.ascent);
- if (annotate_info->gravity == UndefinedGravity)
- (void) CloneString(&annotate_info->geometry,AcquireString(
- geometry));
- (void) AnnotateImage(caption_image,annotate_info,exception);
- height+=caption_image->rows;
- }
- annotate_info=DestroyDrawInfo(annotate_info);
- text=DestroyString(text);
- }
- picture_image=CloneImage(image,image->columns+2*quantum,height,MagickTrue,
- exception);
- if (picture_image == (Image *) NULL)
- {
- if (caption_image != (Image *) NULL)
- caption_image=DestroyImage(caption_image);
- return((Image *) NULL);
- }
- picture_image->background_color=image->border_color;
- (void) SetImageBackgroundColor(picture_image,exception);
- (void) CompositeImage(picture_image,image,OverCompositeOp,MagickTrue,quantum,
- quantum,exception);
- if (caption_image != (Image *) NULL)
- {
- (void) CompositeImage(picture_image,caption_image,OverCompositeOp,
- MagickTrue,quantum,(ssize_t) (image->rows+3*quantum/2),exception);
- caption_image=DestroyImage(caption_image);
- }
- (void) QueryColorCompliance("none",AllCompliance,
- &picture_image->background_color,exception);
- (void) SetImageAlphaChannel(picture_image,OpaqueAlphaChannel,exception);
- rotate_image=RotateImage(picture_image,90.0,exception);
- picture_image=DestroyImage(picture_image);
- if (rotate_image == (Image *) NULL)
- return((Image *) NULL);
- picture_image=rotate_image;
- bend_image=WaveImage(picture_image,0.01*picture_image->rows,2.0*
- picture_image->columns,method,exception);
- picture_image=DestroyImage(picture_image);
- if (bend_image == (Image *) NULL)
- return((Image *) NULL);
- picture_image=bend_image;
- rotate_image=RotateImage(picture_image,-90.0,exception);
- picture_image=DestroyImage(picture_image);
- if (rotate_image == (Image *) NULL)
- return((Image *) NULL);
- picture_image=rotate_image;
- picture_image->background_color=image->background_color;
- polaroid_image=ShadowImage(picture_image,80.0,2.0,quantum/3,quantum/3,
- exception);
- if (polaroid_image == (Image *) NULL)
- {
- picture_image=DestroyImage(picture_image);
- return(picture_image);
- }
- flop_image=FlopImage(polaroid_image,exception);
- polaroid_image=DestroyImage(polaroid_image);
- if (flop_image == (Image *) NULL)
- {
- picture_image=DestroyImage(picture_image);
- return(picture_image);
- }
- polaroid_image=flop_image;
- (void) CompositeImage(polaroid_image,picture_image,OverCompositeOp,
- MagickTrue,(ssize_t) (-0.01*picture_image->columns/2.0),0L,exception);
- picture_image=DestroyImage(picture_image);
- (void) QueryColorCompliance("none",AllCompliance,
- &polaroid_image->background_color,exception);
- rotate_image=RotateImage(polaroid_image,angle,exception);
- polaroid_image=DestroyImage(polaroid_image);
- if (rotate_image == (Image *) NULL)
- return((Image *) NULL);
- polaroid_image=rotate_image;
- trim_image=TrimImage(polaroid_image,exception);
- polaroid_image=DestroyImage(polaroid_image);
- if (trim_image == (Image *) NULL)
- return((Image *) NULL);
- polaroid_image=trim_image;
- return(polaroid_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S e p i a T o n e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% MagickSepiaToneImage() applies a special effect to the image, similar to the
-% effect achieved in a photo darkroom by sepia toning. Threshold ranges from
-% 0 to QuantumRange and is a measure of the extent of the sepia toning. A
-% threshold of 80% is a good starting point for a reasonable tone.
-%
-% The format of the SepiaToneImage method is:
-%
-% Image *SepiaToneImage(const Image *image,const double threshold,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o threshold: the tone threshold.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SepiaToneImage(const Image *image,const double threshold,
- ExceptionInfo *exception)
-{
-#define SepiaToneImageTag "SepiaTone/Image"
-
- CacheView
- *image_view,
- *sepia_view;
-
- Image
- *sepia_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- /*
- Initialize sepia-toned image attributes.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- sepia_image=CloneImage(image,0,0,MagickTrue,exception);
- if (sepia_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(sepia_image,DirectClass,exception) == MagickFalse)
- {
- sepia_image=DestroyImage(sepia_image);
- return((Image *) NULL);
- }
- /*
- Tone each row of the image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(image,exception);
- sepia_view=AcquireAuthenticCacheView(sepia_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,sepia_image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=GetCacheViewAuthenticPixels(sepia_view,0,y,sepia_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- double
- intensity,
- tone;
-
- intensity=GetPixelIntensity(image,p);
- tone=intensity > threshold ? (double) QuantumRange : intensity+
- (double) QuantumRange-threshold;
- SetPixelRed(sepia_image,ClampToQuantum(tone),q);
- tone=intensity > (7.0*threshold/6.0) ? (double) QuantumRange :
- intensity+(double) QuantumRange-7.0*threshold/6.0;
- SetPixelGreen(sepia_image,ClampToQuantum(tone),q);
- tone=intensity < (threshold/6.0) ? 0 : intensity-threshold/6.0;
- SetPixelBlue(sepia_image,ClampToQuantum(tone),q);
- tone=threshold/7.0;
- if ((double) GetPixelGreen(image,q) < tone)
- SetPixelGreen(sepia_image,ClampToQuantum(tone),q);
- if ((double) GetPixelBlue(image,q) < tone)
- SetPixelBlue(sepia_image,ClampToQuantum(tone),q);
- SetPixelAlpha(sepia_image,GetPixelAlpha(image,p),q);
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(sepia_image);
- }
- if (SyncCacheViewAuthenticPixels(sepia_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_SepiaToneImage)
-#endif
- proceed=SetImageProgress(image,SepiaToneImageTag,progress++,
- image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- sepia_view=DestroyCacheView(sepia_view);
- image_view=DestroyCacheView(image_view);
- (void) NormalizeImage(sepia_image,exception);
- (void) ContrastImage(sepia_image,MagickTrue,exception);
- if (status == MagickFalse)
- sepia_image=DestroyImage(sepia_image);
- return(sepia_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S h a d o w I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% ShadowImage() simulates a shadow from the specified image and returns it.
-%
-% The format of the ShadowImage method is:
-%
-% Image *ShadowImage(const Image *image,const double alpha,
-% const double sigma,const ssize_t x_offset,const ssize_t y_offset,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o alpha: percentage transparency.
-%
-% o sigma: the standard deviation of the Gaussian, in pixels.
-%
-% o x_offset: the shadow x-offset.
-%
-% o y_offset: the shadow y-offset.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *ShadowImage(const Image *image,const double alpha,
- const double sigma,const ssize_t x_offset,const ssize_t y_offset,
- ExceptionInfo *exception)
-{
-#define ShadowImageTag "Shadow/Image"
-
- CacheView
- *image_view;
-
- ChannelType
- channel_mask;
-
- Image
- *border_image,
- *clone_image,
- *shadow_image;
-
- MagickBooleanType
- status;
-
- PixelInfo
- background_color;
-
- RectangleInfo
- border_info;
-
- ssize_t
- y;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- clone_image=CloneImage(image,0,0,MagickTrue,exception);
- if (clone_image == (Image *) NULL)
- return((Image *) NULL);
- if (IsGrayColorspace(image->colorspace) != MagickFalse)
- (void) SetImageColorspace(clone_image,sRGBColorspace,exception);
- (void) SetImageVirtualPixelMethod(clone_image,EdgeVirtualPixelMethod,
- exception);
- border_info.width=(size_t) floor(2.0*sigma+0.5);
- border_info.height=(size_t) floor(2.0*sigma+0.5);
- border_info.x=0;
- border_info.y=0;
- (void) QueryColorCompliance("none",AllCompliance,&clone_image->border_color,
- exception);
- clone_image->alpha_trait=BlendPixelTrait;
- border_image=BorderImage(clone_image,&border_info,OverCompositeOp,exception);
- clone_image=DestroyImage(clone_image);
- if (border_image == (Image *) NULL)
- return((Image *) NULL);
- if (border_image->alpha_trait == UndefinedPixelTrait)
- (void) SetImageAlphaChannel(border_image,OpaqueAlphaChannel,exception);
- /*
- Shadow image.
- */
- status=MagickTrue;
- background_color=border_image->background_color;
- background_color.alpha_trait=BlendPixelTrait;
- image_view=AcquireAuthenticCacheView(border_image,exception);
- for (y=0; y < (ssize_t) border_image->rows; y++)
- {
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- q=QueueCacheViewAuthenticPixels(image_view,0,y,border_image->columns,1,
- exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) border_image->columns; x++)
- {
- if (border_image->alpha_trait != UndefinedPixelTrait)
- background_color.alpha=GetPixelAlpha(border_image,q)*alpha/100.0;
- SetPixelViaPixelInfo(border_image,&background_color,q);
- q+=GetPixelChannels(border_image);
- }
- if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
- status=MagickFalse;
- }
- image_view=DestroyCacheView(image_view);
- if (status == MagickFalse)
- {
- border_image=DestroyImage(border_image);
- return((Image *) NULL);
- }
- channel_mask=SetImageChannelMask(border_image,AlphaChannel);
- shadow_image=BlurImage(border_image,0.0,sigma,exception);
- border_image=DestroyImage(border_image);
- if (shadow_image == (Image *) NULL)
- return((Image *) NULL);
- (void) SetPixelChannelMask(shadow_image,channel_mask);
- if (shadow_image->page.width == 0)
- shadow_image->page.width=shadow_image->columns;
- if (shadow_image->page.height == 0)
- shadow_image->page.height=shadow_image->rows;
- shadow_image->page.width+=x_offset-(ssize_t) border_info.width;
- shadow_image->page.height+=y_offset-(ssize_t) border_info.height;
- shadow_image->page.x+=x_offset-(ssize_t) border_info.width;
- shadow_image->page.y+=y_offset-(ssize_t) border_info.height;
- return(shadow_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S k e t c h I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SketchImage() simulates a pencil sketch. We convolve the image with a
-% Gaussian operator of the given radius and standard deviation (sigma). For
-% reasonable results, radius should be larger than sigma. Use a radius of 0
-% and SketchImage() selects a suitable radius for you. Angle gives the angle
-% of the sketch.
-%
-% The format of the SketchImage method is:
-%
-% Image *SketchImage(const Image *image,const double radius,
-% const double sigma,const double angle,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o radius: the radius of the Gaussian, in pixels, not counting the
-% center pixel.
-%
-% o sigma: the standard deviation of the Gaussian, in pixels.
-%
-% o angle: apply the effect along this angle.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SketchImage(const Image *image,const double radius,
- const double sigma,const double angle,ExceptionInfo *exception)
-{
- CacheView
- *random_view;
-
- Image
- *blend_image,
- *blur_image,
- *dodge_image,
- *random_image,
- *sketch_image;
-
- MagickBooleanType
- status;
-
- RandomInfo
- **magick_restrict random_info;
-
- ssize_t
- y;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- unsigned long
- key;
-#endif
-
- /*
- Sketch image.
- */
- random_image=CloneImage(image,image->columns << 1,image->rows << 1,
- MagickTrue,exception);
- if (random_image == (Image *) NULL)
- return((Image *) NULL);
- status=MagickTrue;
- random_info=AcquireRandomInfoThreadSet();
- random_view=AcquireAuthenticCacheView(random_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- key=GetRandomSecretKey(random_info[0]);
- #pragma omp parallel for schedule(static) shared(status) \
- magick_number_threads(random_image,random_image,random_image->rows,key == ~0UL)
-#endif
- for (y=0; y < (ssize_t) random_image->rows; y++)
- {
- const int
- id = GetOpenMPThreadId();
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- q=QueueCacheViewAuthenticPixels(random_view,0,y,random_image->columns,1,
- exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) random_image->columns; x++)
- {
- double
- value;
-
- register ssize_t
- i;
-
- value=GetPseudoRandomValue(random_info[id]);
- for (i=0; i < (ssize_t) GetPixelChannels(random_image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if (traits == UndefinedPixelTrait)
- continue;
- q[i]=ClampToQuantum(QuantumRange*value);
- }
- q+=GetPixelChannels(random_image);
- }
- if (SyncCacheViewAuthenticPixels(random_view,exception) == MagickFalse)
- status=MagickFalse;
- }
- random_view=DestroyCacheView(random_view);
- random_info=DestroyRandomInfoThreadSet(random_info);
- if (status == MagickFalse)
- {
- random_image=DestroyImage(random_image);
- return(random_image);
- }
- blur_image=MotionBlurImage(random_image,radius,sigma,angle,exception);
- random_image=DestroyImage(random_image);
- if (blur_image == (Image *) NULL)
- return((Image *) NULL);
- dodge_image=EdgeImage(blur_image,radius,exception);
- blur_image=DestroyImage(blur_image);
- if (dodge_image == (Image *) NULL)
- return((Image *) NULL);
- (void) NormalizeImage(dodge_image,exception);
- (void) NegateImage(dodge_image,MagickFalse,exception);
- (void) TransformImage(&dodge_image,(char *) NULL,"50%",exception);
- sketch_image=CloneImage(image,0,0,MagickTrue,exception);
- if (sketch_image == (Image *) NULL)
- {
- dodge_image=DestroyImage(dodge_image);
- return((Image *) NULL);
- }
- (void) CompositeImage(sketch_image,dodge_image,ColorDodgeCompositeOp,
- MagickTrue,0,0,exception);
- dodge_image=DestroyImage(dodge_image);
- blend_image=CloneImage(image,0,0,MagickTrue,exception);
- if (blend_image == (Image *) NULL)
- {
- sketch_image=DestroyImage(sketch_image);
- return((Image *) NULL);
- }
- if (blend_image->alpha_trait != BlendPixelTrait)
- (void) SetImageAlpha(blend_image,TransparentAlpha,exception);
- (void) SetImageArtifact(blend_image,"compose:args","20x80");
- (void) CompositeImage(sketch_image,blend_image,BlendCompositeOp,MagickTrue,
- 0,0,exception);
- blend_image=DestroyImage(blend_image);
- return(sketch_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S o l a r i z e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SolarizeImage() applies a special effect to the image, similar to the effect
-% achieved in a photo darkroom by selectively exposing areas of photo
-% sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a
-% measure of the extent of the solarization.
-%
-% The format of the SolarizeImage method is:
-%
-% MagickBooleanType SolarizeImage(Image *image,const double threshold,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o threshold: Define the extent of the solarization.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport MagickBooleanType SolarizeImage(Image *image,
- const double threshold,ExceptionInfo *exception)
-{
-#define SolarizeImageTag "Solarize/Image"
-
- CacheView
- *image_view;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- ssize_t
- y;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- if (IsGrayColorspace(image->colorspace) != MagickFalse)
- (void) SetImageColorspace(image,sRGBColorspace,exception);
- if (image->storage_class == PseudoClass)
- {
- register ssize_t
- i;
-
- /*
- Solarize colormap.
- */
- for (i=0; i < (ssize_t) image->colors; i++)
- {
- if ((double) image->colormap[i].red > threshold)
- image->colormap[i].red=QuantumRange-image->colormap[i].red;
- if ((double) image->colormap[i].green > threshold)
- image->colormap[i].green=QuantumRange-image->colormap[i].green;
- if ((double) image->colormap[i].blue > threshold)
- image->colormap[i].blue=QuantumRange-image->colormap[i].blue;
- }
- }
- /*
- Solarize image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireAuthenticCacheView(image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- register ssize_t
- i;
-
- for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(image,i);
- PixelTrait traits = GetPixelChannelTraits(image,channel);
- if ((traits & UpdatePixelTrait) == 0)
- continue;
- if ((double) q[i] > threshold)
- q[i]=QuantumRange-q[i];
- }
- q+=GetPixelChannels(image);
- }
- if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_SolarizeImage)
-#endif
- proceed=SetImageProgress(image,SolarizeImageTag,progress++,image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- image_view=DestroyCacheView(image_view);
- return(status);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S t e g a n o I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SteganoImage() hides a digital watermark within the image. Recover
-% the hidden watermark later to prove that the authenticity of an image.
-% Offset defines the start position within the image to hide the watermark.
-%
-% The format of the SteganoImage method is:
-%
-% Image *SteganoImage(const Image *image,Image *watermark,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o watermark: the watermark image.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SteganoImage(const Image *image,const Image *watermark,
- ExceptionInfo *exception)
-{
-#define GetBit(alpha,i) ((((size_t) (alpha) >> (size_t) (i)) & 0x01) != 0)
-#define SetBit(alpha,i,set) (Quantum) ((set) != 0 ? (size_t) (alpha) \
- | (one << (size_t) (i)) : (size_t) (alpha) & ~(one << (size_t) (i)))
-#define SteganoImageTag "Stegano/Image"
-
- CacheView
- *stegano_view,
- *watermark_view;
-
- Image
- *stegano_image;
-
- int
- c;
-
- MagickBooleanType
- status;
-
- PixelInfo
- pixel;
-
- register Quantum
- *q;
-
- register ssize_t
- x;
-
- size_t
- depth,
- one;
-
- ssize_t
- i,
- j,
- k,
- y;
-
- /*
- Initialize steganographic image attributes.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(watermark != (const Image *) NULL);
- assert(watermark->signature == MagickCoreSignature);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- one=1UL;
- stegano_image=CloneImage(image,0,0,MagickTrue,exception);
- if (stegano_image == (Image *) NULL)
- return((Image *) NULL);
- stegano_image->depth=MAGICKCORE_QUANTUM_DEPTH;
- if (SetImageStorageClass(stegano_image,DirectClass,exception) == MagickFalse)
- {
- stegano_image=DestroyImage(stegano_image);
- return((Image *) NULL);
- }
- /*
- Hide watermark in low-order bits of image.
- */
- c=0;
- i=0;
- j=0;
- depth=stegano_image->depth;
- k=stegano_image->offset;
- status=MagickTrue;
- watermark_view=AcquireVirtualCacheView(watermark,exception);
- stegano_view=AcquireAuthenticCacheView(stegano_image,exception);
- for (i=(ssize_t) depth-1; (i >= 0) && (j < (ssize_t) depth); i--)
- {
- for (y=0; (y < (ssize_t) watermark->rows) && (j < (ssize_t) depth); y++)
- {
- for (x=0; (x < (ssize_t) watermark->columns) && (j < (ssize_t) depth); x++)
- {
- ssize_t
- offset;
-
- (void) GetOneCacheViewVirtualPixelInfo(watermark_view,x,y,&pixel,
- exception);
- offset=k/(ssize_t) stegano_image->columns;
- if (offset >= (ssize_t) stegano_image->rows)
- break;
- q=GetCacheViewAuthenticPixels(stegano_view,k % (ssize_t)
- stegano_image->columns,k/(ssize_t) stegano_image->columns,1,1,
- exception);
- if (q == (Quantum *) NULL)
- break;
- switch (c)
- {
- case 0:
- {
- SetPixelRed(stegano_image,SetBit(GetPixelRed(stegano_image,q),j,
- GetBit(GetPixelInfoIntensity(stegano_image,&pixel),i)),q);
- break;
- }
- case 1:
- {
- SetPixelGreen(stegano_image,SetBit(GetPixelGreen(stegano_image,q),j,
- GetBit(GetPixelInfoIntensity(stegano_image,&pixel),i)),q);
- break;
- }
- case 2:
- {
- SetPixelBlue(stegano_image,SetBit(GetPixelBlue(stegano_image,q),j,
- GetBit(GetPixelInfoIntensity(stegano_image,&pixel),i)),q);
- break;
- }
- }
- if (SyncCacheViewAuthenticPixels(stegano_view,exception) == MagickFalse)
- break;
- c++;
- if (c == 3)
- c=0;
- k++;
- if (k == (ssize_t) (stegano_image->columns*stegano_image->columns))
- k=0;
- if (k == stegano_image->offset)
- j++;
- }
- }
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
- proceed=SetImageProgress(image,SteganoImageTag,(MagickOffsetType)
- (depth-i),depth);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- stegano_view=DestroyCacheView(stegano_view);
- watermark_view=DestroyCacheView(watermark_view);
- if (status == MagickFalse)
- stegano_image=DestroyImage(stegano_image);
- return(stegano_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S t e r e o A n a g l y p h I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% StereoAnaglyphImage() combines two images and produces a single image that
-% is the composite of a left and right image of a stereo pair. Special
-% red-green stereo glasses are required to view this effect.
-%
-% The format of the StereoAnaglyphImage method is:
-%
-% Image *StereoImage(const Image *left_image,const Image *right_image,
-% ExceptionInfo *exception)
-% Image *StereoAnaglyphImage(const Image *left_image,
-% const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o left_image: the left image.
-%
-% o right_image: the right image.
-%
-% o exception: return any errors or warnings in this structure.
-%
-% o x_offset: amount, in pixels, by which the left image is offset to the
-% right of the right image.
-%
-% o y_offset: amount, in pixels, by which the left image is offset to the
-% bottom of the right image.
-%
-%
-*/
-MagickExport Image *StereoImage(const Image *left_image,
- const Image *right_image,ExceptionInfo *exception)
-{
- return(StereoAnaglyphImage(left_image,right_image,0,0,exception));
-}
-
-MagickExport Image *StereoAnaglyphImage(const Image *left_image,
- const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
- ExceptionInfo *exception)
-{
-#define StereoImageTag "Stereo/Image"
-
- const Image
- *image;
-
- Image
- *stereo_image;
-
- MagickBooleanType
- status;
-
- ssize_t
- y;
-
- assert(left_image != (const Image *) NULL);
- assert(left_image->signature == MagickCoreSignature);
- if (left_image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
- left_image->filename);
- assert(right_image != (const Image *) NULL);
- assert(right_image->signature == MagickCoreSignature);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- assert(right_image != (const Image *) NULL);
- image=left_image;
- if ((left_image->columns != right_image->columns) ||
- (left_image->rows != right_image->rows))
- ThrowImageException(ImageError,"LeftAndRightImageSizesDiffer");
- /*
- Initialize stereo image attributes.
- */
- stereo_image=CloneImage(left_image,left_image->columns,left_image->rows,
- MagickTrue,exception);
- if (stereo_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(stereo_image,DirectClass,exception) == MagickFalse)
- {
- stereo_image=DestroyImage(stereo_image);
- return((Image *) NULL);
- }
- (void) SetImageColorspace(stereo_image,sRGBColorspace,exception);
- /*
- Copy left image to red channel and right image to blue channel.
- */
- status=MagickTrue;
- for (y=0; y < (ssize_t) stereo_image->rows; y++)
- {
- register const Quantum
- *magick_restrict p,
- *magick_restrict q;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict r;
-
- p=GetVirtualPixels(left_image,-x_offset,y-y_offset,image->columns,1,
- exception);
- q=GetVirtualPixels(right_image,0,y,right_image->columns,1,exception);
- r=QueueAuthenticPixels(stereo_image,0,y,stereo_image->columns,1,exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL) ||
- (r == (Quantum *) NULL))
- break;
- for (x=0; x < (ssize_t) stereo_image->columns; x++)
- {
- SetPixelRed(image,GetPixelRed(left_image,p),r);
- SetPixelGreen(image,GetPixelGreen(right_image,q),r);
- SetPixelBlue(image,GetPixelBlue(right_image,q),r);
- if ((GetPixelAlphaTraits(stereo_image) & CopyPixelTrait) != 0)
- SetPixelAlpha(image,(GetPixelAlpha(left_image,p)+
- GetPixelAlpha(right_image,q))/2,r);
- p+=GetPixelChannels(left_image);
- q+=GetPixelChannels(right_image);
- r+=GetPixelChannels(stereo_image);
- }
- if (SyncAuthenticPixels(stereo_image,exception) == MagickFalse)
- break;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
- proceed=SetImageProgress(image,StereoImageTag,(MagickOffsetType) y,
- stereo_image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- if (status == MagickFalse)
- stereo_image=DestroyImage(stereo_image);
- return(stereo_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% S w i r l I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% SwirlImage() swirls the pixels about the center of the image, where
-% degrees indicates the sweep of the arc through which each pixel is moved.
-% You get a more dramatic effect as the degrees move from 1 to 360.
-%
-% The format of the SwirlImage method is:
-%
-% Image *SwirlImage(const Image *image,double degrees,
-% const PixelInterpolateMethod method,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o degrees: Define the tightness of the swirling effect.
-%
-% o method: the pixel interpolation method.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *SwirlImage(const Image *image,double degrees,
- const PixelInterpolateMethod method,ExceptionInfo *exception)
-{
-#define SwirlImageTag "Swirl/Image"
-
- CacheView
- *canvas_view,
- *interpolate_view,
- *swirl_view;
-
- double
- radius;
-
- Image
- *canvas,
- *swirl_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- PointInfo
- center,
- scale;
-
- ssize_t
- y;
-
- /*
- Initialize swirl image attributes.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- canvas=CloneImage(image,0,0,MagickTrue,exception);
- if (canvas == (Image *) NULL)
- return((Image *) NULL);
- if ((canvas->alpha_trait == UndefinedPixelTrait) &&
- (canvas->background_color.alpha != OpaqueAlpha))
- (void) SetImageAlphaChannel(canvas,OpaqueAlphaChannel,exception);
- swirl_image=CloneImage(canvas,canvas->columns,canvas->rows,MagickTrue,
- exception);
- if (swirl_image == (Image *) NULL)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- if (SetImageStorageClass(swirl_image,DirectClass,exception) == MagickFalse)
- {
- canvas=DestroyImage(canvas);
- swirl_image=DestroyImage(swirl_image);
- return((Image *) NULL);
- }
- /*
- Compute scaling factor.
- */
- center.x=(double) canvas->columns/2.0;
- center.y=(double) canvas->rows/2.0;
- radius=MagickMax(center.x,center.y);
- scale.x=1.0;
- scale.y=1.0;
- if (canvas->columns > canvas->rows)
- scale.y=(double) canvas->columns/(double) canvas->rows;
- else
- if (canvas->columns < canvas->rows)
- scale.x=(double) canvas->rows/(double) canvas->columns;
- degrees=(double) DegreesToRadians(degrees);
- /*
- Swirl image.
- */
- status=MagickTrue;
- progress=0;
- canvas_view=AcquireVirtualCacheView(canvas,exception);
- interpolate_view=AcquireVirtualCacheView(image,exception);
- swirl_view=AcquireAuthenticCacheView(swirl_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(canvas,swirl_image,canvas->rows,1)
-#endif
- for (y=0; y < (ssize_t) canvas->rows; y++)
- {
- double
- distance;
-
- PointInfo
- delta;
-
- register const Quantum
- *magick_restrict p;
-
- register ssize_t
- x;
-
- register Quantum
- *magick_restrict q;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(canvas_view,0,y,canvas->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(swirl_view,0,y,swirl_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- delta.y=scale.y*(double) (y-center.y);
- for (x=0; x < (ssize_t) canvas->columns; x++)
- {
- /*
- Determine if the pixel is within an ellipse.
- */
- delta.x=scale.x*(double) (x-center.x);
- distance=delta.x*delta.x+delta.y*delta.y;
- if ((distance >= (radius*radius)) ||
- (GetPixelWriteMask(image,p) > (QuantumRange/2)))
- {
- register ssize_t
- i;
-
- for (i=0; i < (ssize_t) GetPixelChannels(canvas); i++)
- {
- PixelChannel channel = GetPixelChannelChannel(canvas,i);
- PixelTrait traits = GetPixelChannelTraits(canvas,channel);
- PixelTrait swirl_traits = GetPixelChannelTraits(swirl_image,
- channel);
- if ((traits == UndefinedPixelTrait) ||
- (swirl_traits == UndefinedPixelTrait))
- continue;
- SetPixelChannel(swirl_image,channel,p[i],q);
- }
- }
- else
- {
- double
- cosine,
- factor,
- sine;
-
- /*
- Swirl the pixel.
- */
- factor=1.0-sqrt((double) distance)/radius;
- sine=sin((double) (degrees*factor*factor));
- cosine=cos((double) (degrees*factor*factor));
- status=InterpolatePixelChannels(canvas,interpolate_view,swirl_image,
- method,((cosine*delta.x-sine*delta.y)/scale.x+center.x),(double)
- ((sine*delta.x+cosine*delta.y)/scale.y+center.y),q,exception);
- if (status == MagickFalse)
- break;
- }
- p+=GetPixelChannels(canvas);
- q+=GetPixelChannels(swirl_image);
- }
- if (SyncCacheViewAuthenticPixels(swirl_view,exception) == MagickFalse)
- status=MagickFalse;
- if (canvas->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_SwirlImage)
-#endif
- proceed=SetImageProgress(canvas,SwirlImageTag,progress++,canvas->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- swirl_view=DestroyCacheView(swirl_view);
- interpolate_view=DestroyCacheView(interpolate_view);
- canvas_view=DestroyCacheView(canvas_view);
- canvas=DestroyImage(canvas);
- if (status == MagickFalse)
- swirl_image=DestroyImage(swirl_image);
- return(swirl_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% T i n t I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% TintImage() applies a color vector to each pixel in the image. The length
-% of the vector is 0 for black and white and at its maximum for the midtones.
-% The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))
-%
-% The format of the TintImage method is:
-%
-% Image *TintImage(const Image *image,const char *blend,
-% const PixelInfo *tint,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o blend: A color value used for tinting.
-%
-% o tint: A color value used for tinting.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *TintImage(const Image *image,const char *blend,
- const PixelInfo *tint,ExceptionInfo *exception)
-{
-#define TintImageTag "Tint/Image"
-
- CacheView
- *image_view,
- *tint_view;
-
- double
- intensity;
-
- GeometryInfo
- geometry_info;
-
- Image
- *tint_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- PixelInfo
- color_vector;
-
- MagickStatusType
- flags;
-
- ssize_t
- y;
-
- /*
- Allocate tint image.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- tint_image=CloneImage(image,0,0,MagickTrue,exception);
- if (tint_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(tint_image,DirectClass,exception) == MagickFalse)
- {
- tint_image=DestroyImage(tint_image);
- return((Image *) NULL);
- }
- if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
- (IsPixelInfoGray(tint) == MagickFalse))
- (void) SetImageColorspace(tint_image,sRGBColorspace,exception);
- if (blend == (const char *) NULL)
- return(tint_image);
- /*
- Determine RGB values of the color.
- */
- GetPixelInfo(image,&color_vector);
- flags=ParseGeometry(blend,&geometry_info);
- color_vector.red=geometry_info.rho;
- color_vector.green=geometry_info.rho;
- color_vector.blue=geometry_info.rho;
- color_vector.alpha=(MagickRealType) OpaqueAlpha;
- if ((flags & SigmaValue) != 0)
- color_vector.green=geometry_info.sigma;
- if ((flags & XiValue) != 0)
- color_vector.blue=geometry_info.xi;
- if ((flags & PsiValue) != 0)
- color_vector.alpha=geometry_info.psi;
- if (image->colorspace == CMYKColorspace)
- {
- color_vector.black=geometry_info.rho;
- if ((flags & PsiValue) != 0)
- color_vector.black=geometry_info.psi;
- if ((flags & ChiValue) != 0)
- color_vector.alpha=geometry_info.chi;
- }
- intensity=(double) GetPixelInfoIntensity((const Image *) NULL,tint);
- color_vector.red=(double) (color_vector.red*tint->red/100.0-intensity);
- color_vector.green=(double) (color_vector.green*tint->green/100.0-intensity);
- color_vector.blue=(double) (color_vector.blue*tint->blue/100.0-intensity);
- color_vector.black=(double) (color_vector.black*tint->black/100.0-intensity);
- color_vector.alpha=(double) (color_vector.alpha*tint->alpha/100.0-intensity);
- /*
- Tint image.
- */
- status=MagickTrue;
- progress=0;
- image_view=AcquireVirtualCacheView(image,exception);
- tint_view=AcquireAuthenticCacheView(tint_image,exception);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(image,tint_image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- register const Quantum
- *magick_restrict p;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
- q=QueueCacheViewAuthenticPixels(tint_view,0,y,tint_image->columns,1,
- exception);
- if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- PixelInfo
- pixel;
-
- double
- weight;
-
- GetPixelInfo(image,&pixel);
- weight=QuantumScale*GetPixelRed(image,p)-0.5;
- pixel.red=(MagickRealType) GetPixelRed(image,p)+color_vector.red*
- (1.0-(4.0*(weight*weight)));
- weight=QuantumScale*GetPixelGreen(image,p)-0.5;
- pixel.green=(MagickRealType) GetPixelGreen(image,p)+color_vector.green*
- (1.0-(4.0*(weight*weight)));
- weight=QuantumScale*GetPixelBlue(image,p)-0.5;
- pixel.blue=(MagickRealType) GetPixelBlue(image,p)+color_vector.blue*
- (1.0-(4.0*(weight*weight)));
- weight=QuantumScale*GetPixelBlack(image,p)-0.5;
- pixel.black=(MagickRealType) GetPixelBlack(image,p)+color_vector.black*
- (1.0-(4.0*(weight*weight)));
- pixel.alpha=(MagickRealType) GetPixelAlpha(image,p);
- SetPixelViaPixelInfo(tint_image,&pixel,q);
- p+=GetPixelChannels(image);
- q+=GetPixelChannels(tint_image);
- }
- if (SyncCacheViewAuthenticPixels(tint_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_TintImage)
-#endif
- proceed=SetImageProgress(image,TintImageTag,progress++,image->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- tint_view=DestroyCacheView(tint_view);
- image_view=DestroyCacheView(image_view);
- if (status == MagickFalse)
- tint_image=DestroyImage(tint_image);
- return(tint_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% V i g n e t t e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% VignetteImage() softens the edges of the image in vignette style.
-%
-% The format of the VignetteImage method is:
-%
-% Image *VignetteImage(const Image *image,const double radius,
-% const double sigma,const ssize_t x,const ssize_t y,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o radius: the radius of the pixel neighborhood.
-%
-% o sigma: the standard deviation of the Gaussian, in pixels.
-%
-% o x, y: Define the x and y ellipse offset.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *VignetteImage(const Image *image,const double radius,
- const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
-{
- char
- ellipse[MagickPathExtent];
-
- DrawInfo
- *draw_info;
-
- Image
- *canvas,
- *blur_image,
- *oval_image,
- *vignette_image;
-
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- canvas=CloneImage(image,0,0,MagickTrue,exception);
- if (canvas == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(canvas,DirectClass,exception) == MagickFalse)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- canvas->alpha_trait=BlendPixelTrait;
- oval_image=CloneImage(canvas,canvas->columns,canvas->rows,MagickTrue,
- exception);
- if (oval_image == (Image *) NULL)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- (void) QueryColorCompliance("#000000",AllCompliance,
- &oval_image->background_color,exception);
- (void) SetImageBackgroundColor(oval_image,exception);
- draw_info=CloneDrawInfo((const ImageInfo *) NULL,(const DrawInfo *) NULL);
- (void) QueryColorCompliance("#ffffff",AllCompliance,&draw_info->fill,
- exception);
- (void) QueryColorCompliance("#ffffff",AllCompliance,&draw_info->stroke,
- exception);
- (void) FormatLocaleString(ellipse,MagickPathExtent,"ellipse %g,%g,%g,%g,"
- "0.0,360.0",image->columns/2.0,image->rows/2.0,image->columns/2.0-x,
- image->rows/2.0-y);
- draw_info->primitive=AcquireString(ellipse);
- (void) DrawImage(oval_image,draw_info,exception);
- draw_info=DestroyDrawInfo(draw_info);
- blur_image=BlurImage(oval_image,radius,sigma,exception);
- oval_image=DestroyImage(oval_image);
- if (blur_image == (Image *) NULL)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- blur_image->alpha_trait=UndefinedPixelTrait;
- (void) CompositeImage(canvas,blur_image,IntensityCompositeOp,MagickTrue,
- 0,0,exception);
- blur_image=DestroyImage(blur_image);
- vignette_image=MergeImageLayers(canvas,FlattenLayer,exception);
- canvas=DestroyImage(canvas);
- if (vignette_image != (Image *) NULL)
- (void) TransformImageColorspace(vignette_image,image->colorspace,exception);
- return(vignette_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% W a v e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% WaveImage() creates a "ripple" effect in the image by shifting the pixels
-% vertically along a sine wave whose amplitude and wavelength is specified
-% by the given parameters.
-%
-% The format of the WaveImage method is:
-%
-% Image *WaveImage(const Image *image,const double amplitude,
-% const double wave_length,const PixelInterpolateMethod method,
-% ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o amplitude, wave_length: Define the amplitude and wave length of the
-% sine wave.
-%
-% o interpolate: the pixel interpolation method.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-MagickExport Image *WaveImage(const Image *image,const double amplitude,
- const double wave_length,const PixelInterpolateMethod method,
- ExceptionInfo *exception)
-{
-#define WaveImageTag "Wave/Image"
-
- CacheView
- *canvas_view,
- *wave_view;
-
- Image
- *canvas,
- *wave_image;
-
- MagickBooleanType
- status;
-
- MagickOffsetType
- progress;
-
- double
- *sine_map;
-
- register ssize_t
- i;
-
- ssize_t
- y;
-
- /*
- Initialize wave image attributes.
- */
- assert(image != (Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
- canvas=CloneImage(image,0,0,MagickTrue,exception);
- if (canvas == (Image *) NULL)
- return((Image *) NULL);
- if ((canvas->alpha_trait == UndefinedPixelTrait) &&
- (canvas->background_color.alpha != OpaqueAlpha))
- (void) SetImageAlpha(canvas,OpaqueAlpha,exception);
- wave_image=CloneImage(canvas,canvas->columns,(size_t) (canvas->rows+2.0*
- fabs(amplitude)),MagickTrue,exception);
- if (wave_image == (Image *) NULL)
- {
- canvas=DestroyImage(canvas);
- return((Image *) NULL);
- }
- if (SetImageStorageClass(wave_image,DirectClass,exception) == MagickFalse)
- {
- canvas=DestroyImage(canvas);
- wave_image=DestroyImage(wave_image);
- return((Image *) NULL);
- }
- /*
- Allocate sine map.
- */
- sine_map=(double *) AcquireQuantumMemory((size_t) wave_image->columns,
- sizeof(*sine_map));
- if (sine_map == (double *) NULL)
- {
- canvas=DestroyImage(canvas);
- wave_image=DestroyImage(wave_image);
- ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
- }
- for (i=0; i < (ssize_t) wave_image->columns; i++)
- sine_map[i]=fabs(amplitude)+amplitude*sin((double) ((2.0*MagickPI*i)/
- wave_length));
- /*
- Wave image.
- */
- status=MagickTrue;
- progress=0;
- canvas_view=AcquireVirtualCacheView(canvas,exception);
- wave_view=AcquireAuthenticCacheView(wave_image,exception);
- (void) SetCacheViewVirtualPixelMethod(canvas_view,
- BackgroundVirtualPixelMethod);
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static) shared(progress,status) \
- magick_number_threads(canvas,wave_image,wave_image->rows,1)
-#endif
- for (y=0; y < (ssize_t) wave_image->rows; y++)
- {
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- if (status == MagickFalse)
- continue;
- q=QueueCacheViewAuthenticPixels(wave_view,0,y,wave_image->columns,1,
- exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- continue;
- }
- for (x=0; x < (ssize_t) wave_image->columns; x++)
- {
- status=InterpolatePixelChannels(canvas,canvas_view,wave_image,method,
- (double) x,(double) (y-sine_map[x]),q,exception);
- if (status == MagickFalse)
- break;
- q+=GetPixelChannels(wave_image);
- }
- if (SyncCacheViewAuthenticPixels(wave_view,exception) == MagickFalse)
- status=MagickFalse;
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_WaveImage)
-#endif
- proceed=SetImageProgress(canvas,WaveImageTag,progress++,canvas->rows);
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- wave_view=DestroyCacheView(wave_view);
- canvas_view=DestroyCacheView(canvas_view);
- canvas=DestroyImage(canvas);
- sine_map=(double *) RelinquishMagickMemory(sine_map);
- if (status == MagickFalse)
- wave_image=DestroyImage(wave_image);
- return(wave_image);
-}
-\f
-/*
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% %
-% %
-% %
-% W a v e l e t D e n o i s e I m a g e %
-% %
-% %
-% %
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%
-% WaveletDenoiseImage() removes noise from the image using a wavelet
-% transform. The wavelet transform is a fast hierarchical scheme for
-% processing an image using a set of consecutive lowpass and high_pass filters,
-% followed by a decimation. This results in a decomposition into different
-% scales which can be regarded as different “frequency bands”, determined by
-% the mother wavelet. Adapted from dcraw.c by David Coffin.
-%
-% The format of the WaveletDenoiseImage method is:
-%
-% Image *WaveletDenoiseImage(const Image *image,const double threshold,
-% const double softness,ExceptionInfo *exception)
-%
-% A description of each parameter follows:
-%
-% o image: the image.
-%
-% o threshold: set the threshold for smoothing.
-%
-% o softness: attenuate the smoothing threshold.
-%
-% o exception: return any errors or warnings in this structure.
-%
-*/
-
-static inline void HatTransform(const float *magick_restrict pixels,
- const size_t stride,const size_t extent,const size_t scale,float *kernel)
-{
- const float
- *magick_restrict p,
- *magick_restrict q,
- *magick_restrict r;
-
- register ssize_t
- i;
-
- p=pixels;
- q=pixels+scale*stride;
- r=pixels+scale*stride;
- for (i=0; i < (ssize_t) scale; i++)
- {
- kernel[i]=0.25f*(*p+(*p)+(*q)+(*r));
- p+=stride;
- q-=stride;
- r+=stride;
- }
- for ( ; i < (ssize_t) (extent-scale); i++)
- {
- kernel[i]=0.25f*(2.0f*(*p)+*(p-scale*stride)+*(p+scale*stride));
- p+=stride;
- }
- q=p-scale*stride;
- r=pixels+stride*(extent-2);
- for ( ; i < (ssize_t) extent; i++)
- {
- kernel[i]=0.25f*(*p+(*p)+(*q)+(*r));
- p+=stride;
- q+=stride;
- r-=stride;
- }
-}
-
-MagickExport Image *WaveletDenoiseImage(const Image *image,
- const double threshold,const double softness,ExceptionInfo *exception)
-{
- CacheView
- *image_view,
- *noise_view;
-
- float
- *kernel,
- *pixels;
-
- Image
- *noise_image;
-
- MagickBooleanType
- status;
-
- MagickSizeType
- number_pixels;
-
- MemoryInfo
- *pixels_info;
-
- ssize_t
- channel;
-
- static const float
- noise_levels[] = { 0.8002f, 0.2735f, 0.1202f, 0.0585f, 0.0291f, 0.0152f,
- 0.0080f, 0.0044f };
-
- /*
- Initialize noise image attributes.
- */
- assert(image != (const Image *) NULL);
- assert(image->signature == MagickCoreSignature);
- if (image->debug != MagickFalse)
- (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
- assert(exception != (ExceptionInfo *) NULL);
- assert(exception->signature == MagickCoreSignature);
-#if defined(MAGICKCORE_OPENCL_SUPPORT)
- noise_image=AccelerateWaveletDenoiseImage(image,threshold,exception);
- if (noise_image != (Image *) NULL)
- return(noise_image);
-#endif
- noise_image=CloneImage(image,0,0,MagickTrue,exception);
- if (noise_image == (Image *) NULL)
- return((Image *) NULL);
- if (SetImageStorageClass(noise_image,DirectClass,exception) == MagickFalse)
- {
- noise_image=DestroyImage(noise_image);
- return((Image *) NULL);
- }
- if (AcquireMagickResource(WidthResource,4*image->columns) == MagickFalse)
- ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
- pixels_info=AcquireVirtualMemory(3*image->columns,image->rows*
- sizeof(*pixels));
- kernel=(float *) AcquireQuantumMemory(MagickMax(image->rows,image->columns)+1,
- GetOpenMPMaximumThreads()*sizeof(*kernel));
- if ((pixels_info == (MemoryInfo *) NULL) || (kernel == (float *) NULL))
- {
- if (kernel != (float *) NULL)
- kernel=(float *) RelinquishMagickMemory(kernel);
- if (pixels_info != (MemoryInfo *) NULL)
- pixels_info=RelinquishVirtualMemory(pixels_info);
- ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
- }
- pixels=(float *) GetVirtualMemoryBlob(pixels_info);
- status=MagickTrue;
- number_pixels=(MagickSizeType) image->columns*image->rows;
- image_view=AcquireAuthenticCacheView(image,exception);
- noise_view=AcquireAuthenticCacheView(noise_image,exception);
- for (channel=0; channel < (ssize_t) GetPixelChannels(image); channel++)
- {
- register ssize_t
- i;
-
- size_t
- high_pass,
- low_pass;
-
- ssize_t
- level,
- y;
-
- PixelChannel
- pixel_channel;
-
- PixelTrait
- traits;
-
- if (status == MagickFalse)
- continue;
- traits=GetPixelChannelTraits(image,(PixelChannel) channel);
- if (traits == UndefinedPixelTrait)
- continue;
- pixel_channel=GetPixelChannelChannel(image,channel);
- if ((pixel_channel != RedPixelChannel) &&
- (pixel_channel != GreenPixelChannel) &&
- (pixel_channel != BluePixelChannel))
- continue;
- /*
- Copy channel from image to wavelet pixel array.
- */
- i=0;
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- register const Quantum
- *magick_restrict p;
-
- ssize_t
- x;
-
- p=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
- if (p == (const Quantum *) NULL)
- {
- status=MagickFalse;
- break;
- }
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- pixels[i++]=(float) p[channel];
- p+=GetPixelChannels(image);
- }
- }
- /*
- Low pass filter outputs are called approximation kernel & high pass
- filters are referred to as detail kernel. The detail kernel
- have high values in the noisy parts of the signal.
- */
- high_pass=0;
- for (level=0; level < 5; level++)
- {
- double
- magnitude;
-
- ssize_t
- x,
- y;
-
- low_pass=(size_t) (number_pixels*((level & 0x01)+1));
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,1) \
- magick_number_threads(image,image,image->rows,1)
-#endif
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- const int
- id = GetOpenMPThreadId();
-
- register float
- *magick_restrict p,
- *magick_restrict q;
-
- register ssize_t
- x;
-
- p=kernel+id*image->columns;
- q=pixels+y*image->columns;
- HatTransform(q+high_pass,1,image->columns,(size_t) (1UL << level),p);
- q+=low_pass;
- for (x=0; x < (ssize_t) image->columns; x++)
- *q++=(*p++);
- }
-#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,1) \
- magick_number_threads(image,image,image->columns,1)
-#endif
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- const int
- id = GetOpenMPThreadId();
-
- register float
- *magick_restrict p,
- *magick_restrict q;
-
- register ssize_t
- y;
-
- p=kernel+id*image->rows;
- q=pixels+x+low_pass;
- HatTransform(q,image->columns,image->rows,(size_t) (1UL << level),p);
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- *q=(*p++);
- q+=image->columns;
- }
- }
- /*
- To threshold, each coefficient is compared to a threshold value and
- attenuated / shrunk by some factor.
- */
- magnitude=threshold*noise_levels[level];
- for (i=0; i < (ssize_t) number_pixels; ++i)
- {
- pixels[high_pass+i]-=pixels[low_pass+i];
- if (pixels[high_pass+i] < -magnitude)
- pixels[high_pass+i]+=magnitude-softness*magnitude;
- else
- if (pixels[high_pass+i] > magnitude)
- pixels[high_pass+i]-=magnitude-softness*magnitude;
- else
- pixels[high_pass+i]*=softness;
- if (high_pass != 0)
- pixels[i]+=pixels[high_pass+i];
- }
- high_pass=low_pass;
- }
- /*
- Reconstruct image from the thresholded wavelet kernel.
- */
- i=0;
- for (y=0; y < (ssize_t) image->rows; y++)
- {
- MagickBooleanType
- sync;
-
- register Quantum
- *magick_restrict q;
-
- register ssize_t
- x;
-
- ssize_t
- offset;
-
- q=GetCacheViewAuthenticPixels(noise_view,0,y,noise_image->columns,1,
- exception);
- if (q == (Quantum *) NULL)
- {
- status=MagickFalse;
- break;
- }
- offset=GetPixelChannelOffset(noise_image,pixel_channel);
- for (x=0; x < (ssize_t) image->columns; x++)
- {
- MagickRealType
- pixel;
-
- pixel=(MagickRealType) pixels[i]+pixels[low_pass+i];
- q[offset]=ClampToQuantum(pixel);
- i++;
- q+=GetPixelChannels(noise_image);
- }
- sync=SyncCacheViewAuthenticPixels(noise_view,exception);
- if (sync == MagickFalse)
- status=MagickFalse;
- }
- if (image->progress_monitor != (MagickProgressMonitor) NULL)
- {
- MagickBooleanType
- proceed;
-
- proceed=SetImageProgress(image,AddNoiseImageTag,(MagickOffsetType)
- channel,GetPixelChannels(image));
- if (proceed == MagickFalse)
- status=MagickFalse;
- }
- }
- noise_view=DestroyCacheView(noise_view);
- image_view=DestroyCacheView(image_view);
- kernel=(float *) RelinquishMagickMemory(kernel);
- pixels_info=RelinquishVirtualMemory(pixels_info);
- if (status == MagickFalse)
- noise_image=DestroyImage(noise_image);
- return(noise_image);
-}
projects / imagemagick / commitdiff