/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% FFFFF X X %
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% F X X %
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% FFF X %
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% F X X %
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% F X X %
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% %
|
% %
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% MagickCore Image Special Effects Methods %
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% %
|
% Software Design %
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% Cristy %
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% October 1996 %
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% %
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% %
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% %
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% Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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%
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*/
|
|
/*
|
Include declarations.
|
*/
|
#include "MagickCore/studio.h"
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#include "MagickCore/accelerate-private.h"
|
#include "MagickCore/annotate.h"
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#include "MagickCore/artifact.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/cache-view.h"
|
#include "MagickCore/channel.h"
|
#include "MagickCore/color.h"
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#include "MagickCore/color-private.h"
|
#include "MagickCore/colorspace-private.h"
|
#include "MagickCore/composite.h"
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#include "MagickCore/decorate.h"
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#include "MagickCore/distort.h"
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#include "MagickCore/draw.h"
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#include "MagickCore/effect.h"
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#include "MagickCore/enhance.h"
|
#include "MagickCore/exception.h"
|
#include "MagickCore/exception-private.h"
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#include "MagickCore/fx.h"
|
#include "MagickCore/fx-private.h"
|
#include "MagickCore/gem.h"
|
#include "MagickCore/gem-private.h"
|
#include "MagickCore/geometry.h"
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#include "MagickCore/layer.h"
|
#include "MagickCore/list.h"
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#include "MagickCore/log.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
|
#include "MagickCore/memory-private.h"
|
#include "MagickCore/monitor.h"
|
#include "MagickCore/monitor-private.h"
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#include "MagickCore/option.h"
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#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"
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#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/threshold.h"
|
#include "MagickCore/transform.h"
|
#include "MagickCore/transform-private.h"
|
#include "MagickCore/utility.h"
|
|
/*
|
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;
|
};
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
+ 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:
|
%
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% 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,
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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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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,
|
*edge_image;
|
|
MagickBooleanType
|
status;
|
|
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);
|
edge_image=EdgeImage(image,radius,exception);
|
if (edge_image == (Image *) NULL)
|
return((Image *) NULL);
|
charcoal_image=(Image *) NULL;
|
status=ClampImage(edge_image,exception);
|
if (status != MagickFalse)
|
charcoal_image=BlurImage(edge_image,radius,sigma,exception);
|
edge_image=DestroyImage(edge_image);
|
if (charcoal_image == (Image *) NULL)
|
return((Image *) NULL);
|
status=NormalizeImage(charcoal_image,exception);
|
if (status != MagickFalse)
|
status=NegateImage(charcoal_image,MagickFalse,exception);
|
if (status != MagickFalse)
|
status=GrayscaleImage(charcoal_image,image->intensity,exception);
|
if (status == MagickFalse)
|
charcoal_image=DestroyImage(charcoal_image);
|
return(charcoal_image);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
+ 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 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 CompositePixelChannel:
|
{
|
Quantum
|
quantum_pixel[MaxPixelChannels];
|
|
SetPixelViaPixelInfo(image,&pixel,quantum_pixel);
|
return(QuantumScale*GetPixelIntensity(image,quantum_pixel));
|
}
|
case IndexPixelChannel:
|
return(0.0);
|
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((double) image->extent);
|
return((double) 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);
|
if (LocaleCompare(symbol,"printsize.x") == 0)
|
return(PerceptibleReciprocal(image->resolution.x)*image->columns);
|
if (LocaleCompare(symbol,"printsize.y") == 0)
|
return(PerceptibleReciprocal(image->resolution.y)*image->rows);
|
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 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);
|
if (expression == (const char *) NULL)
|
return(CloneImage(image,0,0,MagickTrue,exception));
|
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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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;
|
|
double
|
radius;
|
|
Image
|
*canvas_image,
|
*implode_image;
|
|
MagickBooleanType
|
status;
|
|
MagickOffsetType
|
progress;
|
|
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_image=CloneImage(image,0,0,MagickTrue,exception);
|
if (canvas_image == (Image *) NULL)
|
return((Image *) NULL);
|
if ((canvas_image->alpha_trait == UndefinedPixelTrait) &&
|
(canvas_image->background_color.alpha != OpaqueAlpha))
|
(void) SetImageAlphaChannel(canvas_image,OpaqueAlphaChannel,exception);
|
implode_image=CloneImage(canvas_image,0,0,MagickTrue,exception);
|
if (implode_image == (Image *) NULL)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
return((Image *) NULL);
|
}
|
if (SetImageStorageClass(implode_image,DirectClass,exception) == MagickFalse)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
implode_image=DestroyImage(implode_image);
|
return((Image *) NULL);
|
}
|
/*
|
Compute scaling factor.
|
*/
|
scale.x=1.0;
|
scale.y=1.0;
|
center.x=0.5*canvas_image->columns;
|
center.y=0.5*canvas_image->rows;
|
radius=center.x;
|
if (canvas_image->columns > canvas_image->rows)
|
scale.y=(double) canvas_image->columns/(double) canvas_image->rows;
|
else
|
if (canvas_image->columns < canvas_image->rows)
|
{
|
scale.x=(double) canvas_image->rows/(double) canvas_image->columns;
|
radius=center.y;
|
}
|
/*
|
Implode image.
|
*/
|
status=MagickTrue;
|
progress=0;
|
canvas_view=AcquireVirtualCacheView(canvas_image,exception);
|
interpolate_view=AcquireVirtualCacheView(canvas_image,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_image,implode_image,canvas_image->rows,1)
|
#endif
|
for (y=0; y < (ssize_t) canvas_image->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_image->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_image->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_image); i++)
|
{
|
PixelChannel channel = GetPixelChannelChannel(canvas_image,i);
|
PixelTrait traits = GetPixelChannelTraits(canvas_image,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_image,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_image);
|
q+=GetPixelChannels(implode_image);
|
}
|
if (SyncCacheViewAuthenticPixels(implode_view,exception) == MagickFalse)
|
status=MagickFalse;
|
if (canvas_image->progress_monitor != (MagickProgressMonitor) NULL)
|
{
|
MagickBooleanType
|
proceed;
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
#pragma omp atomic
|
#endif
|
progress++;
|
proceed=SetImageProgress(canvas_image,ImplodeImageTag,progress,
|
canvas_image->rows);
|
if (proceed == MagickFalse)
|
status=MagickFalse;
|
}
|
}
|
implode_view=DestroyCacheView(implode_view);
|
interpolate_view=DestroyCacheView(interpolate_view);
|
canvas_view=DestroyCacheView(canvas_view);
|
canvas_image=DestroyImage(canvas_image);
|
if (status == MagickFalse)
|
implode_image=DestroyImage(implode_image);
|
return(implode_image);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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;
|
|
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));
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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;
|
|
assert(image != (Image *) NULL);
|
if (image->debug != MagickFalse)
|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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
|
*text;
|
|
/*
|
Generate caption image.
|
*/
|
caption_image=CloneImage(image,image->columns,1,MagickTrue,exception);
|
if (caption_image == (Image *) NULL)
|
return((Image *) NULL);
|
text=InterpretImageProperties((ImageInfo *) NULL,(Image *) image,caption,
|
exception);
|
if (text != (char *) NULL)
|
{
|
char
|
geometry[MagickPathExtent];
|
|
DrawInfo
|
*annotate_info;
|
|
MagickBooleanType
|
status;
|
|
ssize_t
|
count;
|
|
TypeMetric
|
metrics;
|
|
annotate_info=CloneDrawInfo((const ImageInfo *) NULL,draw_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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
status=ClampImage(dodge_image,exception);
|
if (status != MagickFalse)
|
status=NormalizeImage(dodge_image,exception);
|
if (status != MagickFalse)
|
status=NegateImage(dodge_image,MagickFalse,exception);
|
if (status != MagickFalse)
|
status=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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
proceed=SetImageProgress(image,SolarizeImageTag,progress,image->rows);
|
if (proceed == MagickFalse)
|
status=MagickFalse;
|
}
|
}
|
image_view=DestroyCacheView(image_view);
|
return(status);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
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(stereo_image,GetPixelRed(left_image,p),r);
|
SetPixelGreen(stereo_image,GetPixelGreen(right_image,q),r);
|
SetPixelBlue(stereo_image,GetPixelBlue(right_image,q),r);
|
if ((GetPixelAlphaTraits(stereo_image) & CopyPixelTrait) != 0)
|
SetPixelAlpha(stereo_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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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_image,
|
*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_image=CloneImage(image,0,0,MagickTrue,exception);
|
if (canvas_image == (Image *) NULL)
|
return((Image *) NULL);
|
if ((canvas_image->alpha_trait == UndefinedPixelTrait) &&
|
(canvas_image->background_color.alpha != OpaqueAlpha))
|
(void) SetImageAlphaChannel(canvas_image,OpaqueAlphaChannel,exception);
|
swirl_image=CloneImage(canvas_image,0,0,MagickTrue,exception);
|
if (swirl_image == (Image *) NULL)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
return((Image *) NULL);
|
}
|
if (SetImageStorageClass(swirl_image,DirectClass,exception) == MagickFalse)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
swirl_image=DestroyImage(swirl_image);
|
return((Image *) NULL);
|
}
|
/*
|
Compute scaling factor.
|
*/
|
center.x=(double) canvas_image->columns/2.0;
|
center.y=(double) canvas_image->rows/2.0;
|
radius=MagickMax(center.x,center.y);
|
scale.x=1.0;
|
scale.y=1.0;
|
if (canvas_image->columns > canvas_image->rows)
|
scale.y=(double) canvas_image->columns/(double) canvas_image->rows;
|
else
|
if (canvas_image->columns < canvas_image->rows)
|
scale.x=(double) canvas_image->rows/(double) canvas_image->columns;
|
degrees=(double) DegreesToRadians(degrees);
|
/*
|
Swirl image.
|
*/
|
status=MagickTrue;
|
progress=0;
|
canvas_view=AcquireVirtualCacheView(canvas_image,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_image,swirl_image,canvas_image->rows,1)
|
#endif
|
for (y=0; y < (ssize_t) canvas_image->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_image->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_image->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))
|
{
|
register ssize_t
|
i;
|
|
for (i=0; i < (ssize_t) GetPixelChannels(canvas_image); i++)
|
{
|
PixelChannel channel = GetPixelChannelChannel(canvas_image,i);
|
PixelTrait traits = GetPixelChannelTraits(canvas_image,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_image,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_image);
|
q+=GetPixelChannels(swirl_image);
|
}
|
if (SyncCacheViewAuthenticPixels(swirl_view,exception) == MagickFalse)
|
status=MagickFalse;
|
if (canvas_image->progress_monitor != (MagickProgressMonitor) NULL)
|
{
|
MagickBooleanType
|
proceed;
|
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
#pragma omp atomic
|
#endif
|
progress++;
|
proceed=SetImageProgress(canvas_image,SwirlImageTag,progress,
|
canvas_image->rows);
|
if (proceed == MagickFalse)
|
status=MagickFalse;
|
}
|
}
|
swirl_view=DestroyCacheView(swirl_view);
|
interpolate_view=DestroyCacheView(interpolate_view);
|
canvas_view=DestroyCacheView(canvas_view);
|
canvas_image=DestroyImage(canvas_image);
|
if (status == MagickFalse)
|
swirl_image=DestroyImage(swirl_image);
|
return(swirl_image);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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 atomic
|
#endif
|
progress++;
|
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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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_image_view,
|
*wave_view;
|
|
Image
|
*canvas_image,
|
*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_image=CloneImage(image,0,0,MagickTrue,exception);
|
if (canvas_image == (Image *) NULL)
|
return((Image *) NULL);
|
if ((canvas_image->alpha_trait == UndefinedPixelTrait) &&
|
(canvas_image->background_color.alpha != OpaqueAlpha))
|
(void) SetImageAlpha(canvas_image,OpaqueAlpha,exception);
|
wave_image=CloneImage(canvas_image,canvas_image->columns,(size_t)
|
(canvas_image->rows+2.0*fabs(amplitude)),MagickTrue,exception);
|
if (wave_image == (Image *) NULL)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
return((Image *) NULL);
|
}
|
if (SetImageStorageClass(wave_image,DirectClass,exception) == MagickFalse)
|
{
|
canvas_image=DestroyImage(canvas_image);
|
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_image=DestroyImage(canvas_image);
|
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_image_view=AcquireVirtualCacheView(canvas_image,exception);
|
wave_view=AcquireAuthenticCacheView(wave_image,exception);
|
(void) SetCacheViewVirtualPixelMethod(canvas_image_view,
|
BackgroundVirtualPixelMethod);
|
#if defined(MAGICKCORE_OPENMP_SUPPORT)
|
#pragma omp parallel for schedule(static) shared(progress,status) \
|
magick_number_threads(canvas_image,wave_image,wave_image->rows,1)
|
#endif
|
for (y=0; y < (ssize_t) wave_image->rows; y++)
|
{
|
register const Quantum
|
*magick_restrict p;
|
|
register Quantum
|
*magick_restrict q;
|
|
register ssize_t
|
x;
|
|
if (status == MagickFalse)
|
continue;
|
p=GetCacheViewVirtualPixels(canvas_image_view,0,y,canvas_image->columns,1,
|
exception);
|
q=QueueCacheViewAuthenticPixels(wave_view,0,y,wave_image->columns,1,
|
exception);
|
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
|
{
|
status=MagickFalse;
|
continue;
|
}
|
for (x=0; x < (ssize_t) wave_image->columns; x++)
|
{
|
status=InterpolatePixelChannels(canvas_image,canvas_image_view,
|
wave_image,method,(double) x,(double) (y-sine_map[x]),q,exception);
|
if (status == MagickFalse)
|
break;
|
p+=GetPixelChannels(canvas_image);
|
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 atomic
|
#endif
|
progress++;
|
proceed=SetImageProgress(canvas_image,WaveImageTag,progress,
|
canvas_image->rows);
|
if (proceed == MagickFalse)
|
status=MagickFalse;
|
}
|
}
|
wave_view=DestroyCacheView(wave_view);
|
canvas_image_view=DestroyCacheView(canvas_image_view);
|
canvas_image=DestroyImage(canvas_image);
|
sine_map=(double *) RelinquishMagickMemory(sine_map);
|
if (status == MagickFalse)
|
wave_image=DestroyImage(wave_image);
|
return(wave_image);
|
}
|
|
/*
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
% %
|
% %
|
% %
|
% 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);
|
}
|
