C++ SetImageStorageClass函数代码示例

/*
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%  SetCacheViewStorageClass() sets the image storage class associated with
%  the specified view.
%
%  The format of the SetCacheViewStorageClass method is:
%
%      MagickBooleanType SetCacheViewStorageClass(CacheView *cache_view,
%        const ClassType storage_class)
%
%  A description of each parameter follows:
%
%    o cache_view: the cache view.
%
%    o storage_class: the image storage class: PseudoClass or DirectClass.
%
*/
MagickExport MagickBooleanType SetCacheViewStorageClass(CacheView *cache_view,
  const ClassType storage_class)
{
  assert(cache_view != (CacheView *) NULL);
  assert(cache_view->signature == MagickSignature);
  if (cache_view->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      cache_view->image->filename);
  return(SetImageStorageClass(cache_view->image,storage_class));
}

/*
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%   A c q u i r e I m a g e C o l o r m a p                                   %
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%
%  AcquireImageColormap() allocates an image colormap and initializes
%  it to a linear gray colorspace.  If the image already has a colormap,
%  it is replaced.  AcquireImageColormap() returns MagickTrue if successful,
%  otherwise MagickFalse if there is not enough memory.
%
%  The format of the AcquireImageColormap method is:
%
%      MagickBooleanType AcquireImageColormap(Image *image,const size_t colors,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o colors: the number of colors in the image colormap.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType AcquireImageColormap(Image *image,
  const size_t colors,ExceptionInfo *exception)
{
  register ssize_t
    i;

  /*
    Allocate image colormap.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  image->colors=MagickMax(colors,1);
  if (image->colormap == (PixelInfo *) NULL)
    image->colormap=(PixelInfo *) AcquireQuantumMemory(image->colors,
      sizeof(*image->colormap));
  else
    image->colormap=(PixelInfo *) ResizeQuantumMemory(image->colormap,
      image->colors,sizeof(*image->colormap));
  if (image->colormap == (PixelInfo *) NULL)
    {
      image->colors=0;
      image->storage_class=DirectClass;
      ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
        image->filename);
    }
  for (i=0; i < (ssize_t) image->colors; i++)
  {
    double
      pixel;

    pixel=(double) (i*(QuantumRange/MagickMax(colors-1,1)));
    GetPixelInfo(image,image->colormap+i);
    image->colormap[i].alpha_trait=BlendPixelTrait;
    image->colormap[i].red=pixel;
    image->colormap[i].green=pixel;
    image->colormap[i].blue=pixel;
    image->colormap[i].alpha=OpaqueAlpha;
  }
  return(SetImageStorageClass(image,PseudoClass,exception));
}

/*
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%
%  AcquireImageColormap() allocates an image colormap and initializes
%  it to a linear gray colorspace.  If the image already has a colormap,
%  it is replaced.  AcquireImageColormap() returns MagickTrue if successful,
%  otherwise MagickFalse if there is not enough memory.
%
%  The format of the AcquireImageColormap method is:
%
%      MagickBooleanType AcquireImageColormap(Image *image,const size_t colors)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o colors: the number of colors in the image colormap.
%
*/
MagickExport MagickBooleanType AcquireImageColormap(Image *image,
  const size_t colors)
{
  register ssize_t
    i;

  /*
    Allocate image colormap.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  image->colors=MagickMax(colors,2);
  if (image->colormap == (PixelPacket *) NULL)
    image->colormap=(PixelPacket *) AcquireQuantumMemory(image->colors,
      sizeof(*image->colormap));
  else
    image->colormap=(PixelPacket *) ResizeQuantumMemory(image->colormap,
      image->colors,sizeof(*image->colormap));
  if (image->colormap == (PixelPacket *) NULL)
    {
      image->colors=0;
      image->storage_class=DirectClass;
      ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
        image->filename);
    }
  for (i=0; i < (ssize_t) image->colors; i++)
  {
    size_t
      pixel;

    pixel=(size_t) (i*(QuantumRange/(image->colors-1)));
    image->colormap[i].red=(Quantum) pixel;
    image->colormap[i].green=(Quantum) pixel;
    image->colormap[i].blue=(Quantum) pixel;
    image->colormap[i].opacity=OpaqueOpacity;
  }
  return(SetImageStorageClass(image,PseudoClass));
}

MagickExport Image *OilPaintImage(const Image *image,const double radius,
  const double sigma,ExceptionInfo *exception)
{
#define NumberPaintBins  256
#define OilPaintImageTag  "OilPaint/Image"

  CacheView
    *image_view,
    *paint_view;

  Image
    *linear_image,
    *paint_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  size_t
    **histograms,
    width;

  ssize_t
    center,
    y;

  /*
    Initialize painted 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);
  width=GetOptimalKernelWidth2D(radius,sigma);
  linear_image=CloneImage(image,0,0,MagickTrue,exception);
  paint_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
  if ((linear_image == (Image *) NULL) || (paint_image == (Image *) NULL))
    {
      if (linear_image != (Image *) NULL)
        linear_image=DestroyImage(linear_image);
      if (paint_image != (Image *) NULL)
        linear_image=DestroyImage(paint_image);
      return((Image *) NULL);
    }
  if (SetImageStorageClass(paint_image,DirectClass,exception) == MagickFalse)
    {
      linear_image=DestroyImage(linear_image);
      paint_image=DestroyImage(paint_image);
      return((Image *) NULL);
    }
  histograms=AcquireHistogramThreadSet(NumberPaintBins);
  if (histograms == (size_t **) NULL)
    {
      linear_image=DestroyImage(linear_image);
      paint_image=DestroyImage(paint_image);
      ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
    }
  /*
    Oil paint image.
  */
  status=MagickTrue;
  progress=0;
  center=(ssize_t) GetPixelChannels(linear_image)*(linear_image->columns+width)*
    (width/2L)+GetPixelChannels(linear_image)*(width/2L);
  image_view=AcquireVirtualCacheView(linear_image,exception);
  paint_view=AcquireAuthenticCacheView(paint_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static,4) shared(progress,status) \
    magick_threads(linear_image,paint_image,linear_image->rows,1)
#endif
  for (y=0; y < (ssize_t) linear_image->rows; y++)
  {
    register const Quantum
      *restrict p;

    register Quantum
      *restrict q;

    register size_t
      *histogram;

    register ssize_t
      x;

    if (status == MagickFalse)
      continue;
    p=GetCacheViewVirtualPixels(image_view,-((ssize_t) width/2L),y-(ssize_t)
      (width/2L),linear_image->columns+width,width,exception);
    q=QueueCacheViewAuthenticPixels(paint_view,0,y,paint_image->columns,1,
      exception);
    if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
      {
        status=MagickFalse;
        continue;
      }
    histogram=histograms[GetOpenMPThreadId()];
//.........这里部分代码省略.........

static Image *ReadPlasmaImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  Image
    *image;

  ImageInfo
    *read_info;

  MagickBooleanType
    status;

  register ssize_t
    x;

  register Quantum
    *q;

  register size_t
    i;

  SegmentInfo
    segment_info;

  size_t
    depth,
    max_depth;

  ssize_t
    y;

  /*
    Recursively apply plasma to the image.
  */
  read_info=CloneImageInfo(image_info);
  SetImageInfoBlob(read_info,(void *) NULL,0);
  (void) FormatLocaleString(read_info->filename,MaxTextExtent,
    "gradient:%s",image_info->filename);
  image=ReadImage(read_info,exception);
  read_info=DestroyImageInfo(read_info);
  if (image == (Image *) NULL)
    return((Image *) NULL);
  (void) SetImageStorageClass(image,DirectClass,exception);
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (Quantum *) NULL)
      break;
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      SetPixelAlpha(image,QuantumRange/2,q);
      q+=GetPixelChannels(image);
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      break;
  }
  segment_info.x1=0;
  segment_info.y1=0;
  segment_info.x2=(double) image->columns-1;
  segment_info.y2=(double) image->rows-1;
  if (LocaleCompare(image_info->filename,"fractal") == 0)
    {
      RandomInfo
        *random_info;

      /*
        Seed pixels before recursion.
      */
      (void) SetImageColorspace(image,sRGBColorspace,exception);
      random_info=AcquireRandomInfo();
      PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1,exception);
      PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
        segment_info.y2)/2,exception);
      PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2,exception);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        segment_info.y1,exception);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        (segment_info.y1+segment_info.y2)/2,exception);
      PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
        segment_info.y2,exception);
      PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1,exception);
      PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
        segment_info.y2)/2,exception);
      PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2,exception);
      random_info=DestroyRandomInfo(random_info);
    }
  i=(size_t) MagickMax(image->columns,image->rows)/2;
  for (max_depth=0; i != 0; max_depth++)
    i>>=1;
  for (depth=1; ; depth++)
  {
    if (PlasmaImage(image,&segment_info,0,depth,exception) != MagickFalse)
      break;
    status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) depth,
      max_depth);
    if (status == MagickFalse)
      break;
  }
  (void) SetImageAlphaChannel(image,SetAlphaChannel,exception);
  return(GetFirstImageInList(image));
//.........这里部分代码省略.........

/*
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%   S e t I m a g e A l p h a C h a n n e l                                   %
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%
%  SetImageAlphaChannel() activates, deactivates, resets, or sets the alpha
%  channel.
%
%  The format of the SetImageAlphaChannel method is:
%
%      MagickBooleanType SetImageAlphaChannel(Image *image,
%        const AlphaChannelType alpha_type)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o alpha_type:  The alpha channel type: ActivateAlphaChannel,
%      CopyAlphaChannel, DeactivateAlphaChannel, ExtractAlphaChannel,
%      OpaqueAlphaChannel, ResetAlphaChannel, SetAlphaChannel,
%      ShapeAlphaChannel, and TransparentAlphaChannel.
%
*/
MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
  const AlphaChannelType alpha_type)
{
  MagickBooleanType
    status;

  assert(image != (Image *) NULL);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
  assert(image->signature == MagickSignature);
  status=MagickTrue;
  switch (alpha_type)
  {
    case ActivateAlphaChannel:
    {
      image->matte=MagickTrue;
      break;
    }
    case BackgroundAlphaChannel:
    {
      CacheView
        *image_view;

      ExceptionInfo
        *exception;

      IndexPacket
        index;

      MagickBooleanType
        status;

      MagickPixelPacket
        background;

      PixelPacket
        pixel;

      ssize_t
        y;

      /*
        Set transparent pixels to background color.
      */
      if (image->matte == MagickFalse)
        break;
      if (SetImageStorageClass(image,DirectClass) == MagickFalse)
        break;
      GetMagickPixelPacket(image,&background);
      SetMagickPixelPacket(image,&image->background_color,(const IndexPacket *)
        NULL,&background);
      if (image->colorspace == CMYKColorspace)
        ConvertRGBToCMYK(&background);
      index=0;
      SetPixelPacket(image,&background,&pixel,&index);
      status=MagickTrue;
      exception=(&image->exception);
      image_view=AcquireAuthenticCacheView(image,exception);
      #if defined(MAGICKCORE_OPENMP_SUPPORT)
        #pragma omp parallel for schedule(static,4) shared(status) \
          magick_threads(image,image,image->rows,1)
      #endif
      for (y=0; y < (ssize_t) image->rows; y++)
      {
        register IndexPacket
          *restrict indexes;

        register PixelPacket
          *restrict q;

        register ssize_t
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    *segment_info;

  PixelInfo
    fill_color,
    pixel;

  register SegmentInfo
    *s;

  SegmentInfo
    *segment_stack;

  ssize_t
    offset,
    start,
    x,
    x1,
    x2,
    y;

  /*
    Check boundary conditions.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(draw_info != (DrawInfo *) NULL);
  assert(draw_info->signature == MagickCoreSignature);
  if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns))
    return(MagickFalse);
  if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows))
    return(MagickFalse);
  if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
    return(MagickFalse);
  if (IsGrayColorspace(image->colorspace) != MagickFalse)
    (void) SetImageColorspace(image,sRGBColorspace,exception);
  if ((image->alpha_trait == UndefinedPixelTrait) &&
      (draw_info->fill.alpha_trait != UndefinedPixelTrait))
    (void) SetImageAlpha(image,OpaqueAlpha,exception);
  /*
    Set floodfill state.
  */
  floodplane_image=CloneImage(image,image->columns,image->rows,MagickTrue,
    exception);
  if (floodplane_image == (Image *) NULL)
    return(MagickFalse);
  floodplane_image->alpha_trait=UndefinedPixelTrait;
  floodplane_image->colorspace=GRAYColorspace;
  (void) QueryColorCompliance("#000",AllCompliance,
    &floodplane_image->background_color,exception);
  (void) SetImageBackgroundColor(floodplane_image,exception);
  segment_info=AcquireVirtualMemory(MaxStacksize,sizeof(*segment_stack));
  if (segment_info == (MemoryInfo *) NULL)
    {
      floodplane_image=DestroyImage(floodplane_image);
      ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
        image->filename);
    }
  segment_stack=(SegmentInfo *) GetVirtualMemoryBlob(segment_info);
  /*
    Push initial segment on stack.
  */
  status=MagickTrue;
  x=x_offset;
  y=y_offset;

/*
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%   S e t I m a g e V i e w I t e r a t o r                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SetImageViewIterator() iterates over the image view in parallel and calls
%  your set method for each scanline of the view.  The pixel extent is
%  confined to the image canvas-- that is no negative offsets or widths or
%  heights that exceed the image dimension.  The pixels are initiallly
%  undefined and any settings you make in the callback method are automagically
%  synced back to your image.
%
%  The callback signature is:
%
%      MagickBooleanType SetImageViewMethod(ImageView *destination,
%        const ssize_t y,const int thread_id,void *context)
%
%  Use this pragma if the view is not single threaded:
%
%    #pragma omp critical
%
%  to define a section of code in your callback set method that must be
%  executed by a single thread at a time.
%
%  The format of the SetImageViewIterator method is:
%
%      MagickBooleanType SetImageViewIterator(ImageView *destination,
%        SetImageViewMethod set,void *context)
%
%  A description of each parameter follows:
%
%    o destination: the image view.
%
%    o set: the set callback method.
%
%    o context: the user defined context.
%
*/
MagickExport MagickBooleanType SetImageViewIterator(ImageView *destination,
  SetImageViewMethod set,void *context)
{
  ExceptionInfo
    *exception;

  Image
    *destination_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  ssize_t
    y;

  assert(destination != (ImageView *) NULL);
  assert(destination->signature == MagickSignature);
  if (set == (SetImageViewMethod) NULL)
    return(MagickFalse);
  destination_image=destination->image;
  if (SetImageStorageClass(destination_image,DirectClass) == MagickFalse)
    return(MagickFalse);
  status=MagickTrue;
  progress=0;
  exception=destination->exception;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(destination->number_threads)
#endif
  for (y=destination->extent.y; y < (ssize_t) destination->extent.height; y++)
  {
    const int
      id = GetOpenMPThreadId();

    MagickBooleanType
      sync;

    register PixelPacket
      *__restrict__ pixels;

    if (status == MagickFalse)
      continue;
    pixels=GetCacheViewAuthenticPixels(destination->view,destination->extent.x,
      y,destination->extent.width,1,exception);
    if (pixels == (PixelPacket *) NULL)
      {
        InheritException(destination->exception,GetCacheViewException(
          destination->view));
        status=MagickFalse;
        continue;
      }
    if (set(destination,y,id,context) == MagickFalse)
      status=MagickFalse;
    sync=SyncCacheViewAuthenticPixels(destination->view,exception);
//.........这里部分代码省略.........

/*
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%     S e p a r a t e I m a g e                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SeparateImage() separates a channel from the image and returns it as a
%  grayscale image.
%
%  The format of the SeparateImage method is:
%
%      Image *SeparateImage(const Image *image,const ChannelType channel,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o channel: the image channel.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *SeparateImage(const Image *image,
  const ChannelType channel_type,ExceptionInfo *exception)
{
#define GetChannelBit(mask,bit)  (((size_t) (mask) >> (size_t) (bit)) & 0x01)
#define SeparateImageTag  "Separate/Image"

  CacheView
    *image_view,
    *separate_view;

  Image
    *separate_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  ssize_t
    y;

  /*
    Initialize separate image attributes.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  separate_image=CloneImage(image,image->columns,image->rows,MagickTrue,
    exception);
  if (separate_image == (Image *) NULL)
    return((Image *) NULL);
  if (SetImageStorageClass(separate_image,DirectClass,exception) == MagickFalse)
    {
      separate_image=DestroyImage(separate_image);
      return((Image *) NULL);
    }
  (void) SetImageColorspace(separate_image,GRAYColorspace,exception);
  separate_image->alpha_trait=UndefinedPixelTrait;
  /*
    Separate image.
  */
  status=MagickTrue;
  progress=0;
  image_view=AcquireVirtualCacheView(image,exception);
  separate_view=AcquireAuthenticCacheView(separate_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static,4) shared(progress,status) \
    magick_threads(image,image,image->rows,1)
#endif
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    register const Quantum
      *restrict p;

    register Quantum
      *restrict q;

    register ssize_t
      x;

    if (status == MagickFalse)
      continue;
    p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
    q=QueueCacheViewAuthenticPixels(separate_view,0,y,separate_image->columns,1,
      exception);
    if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
      {
        status=MagickFalse;
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   S e t W a n d V i e w I t e r a t o r                                     %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  SetWandViewIterator() iterates over the wand view in parallel and calls
%  your set method for each scanline of the view.  The pixel extent is
%  confined to the image canvas-- that is no negative offsets or widths or
%  heights that exceed the image dimension.  The pixels are initiallly
%  undefined and any settings you make in the callback method are automagically
%  synced back to your image.
%
%  The callback signature is:
%
%      MagickBooleanType SetImageViewMethod(ImageView *destination,
%        const ssize_t y,const int thread_id,void *context)
%
%  Use this pragma if the view is not single threaded:
%
%    #pragma omp critical
%
%  to define a section of code in your callback set method that must be
%  executed by a single thread at a time.
%
%  The format of the SetWandViewIterator method is:
%
%      MagickBooleanType SetWandViewIterator(WandView *destination,
%        SetWandViewMethod set,void *context)
%
%  A description of each parameter follows:
%
%    o destination: the wand view.
%
%    o set: the set callback method.
%
%    o context: the user defined context.
%
*/
WandExport MagickBooleanType SetWandViewIterator(WandView *destination,
  SetWandViewMethod set,void *context)
{
  ExceptionInfo
    *exception;

  Image
    *destination_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  ssize_t
    y;

  assert(destination != (WandView *) NULL);
  assert(destination->signature == WandSignature);
  if (set == (SetWandViewMethod) NULL)
    return(MagickFalse);
  destination_image=destination->wand->images;
  if (SetImageStorageClass(destination_image,DirectClass) == MagickFalse)
    return(MagickFalse);
  status=MagickTrue;
  progress=0;
  exception=destination->exception;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static,1) shared(progress,status) num_threads(destination->number_threads)
#endif
  for (y=destination->extent.y; y < (ssize_t) destination->extent.height; y++)
  {
    const int
      id = GetOpenMPThreadId();

    MagickBooleanType
      sync;

    register IndexPacket
      *restrict indexes;

    register ssize_t
      x;

    register PixelPacket
      *restrict pixels;

    if (status == MagickFalse)
      continue;
    pixels=GetCacheViewAuthenticPixels(destination->view,destination->extent.x,
      y,destination->extent.width,1,exception);
    if (pixels == (PixelPacket *) NULL)
      {
        InheritException(destination->exception,GetCacheViewException(
          destination->view));
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   T r a n s f e r I m a g e V i e w I t e r a t o r                         %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  TransferImageViewIterator() iterates over two image views in parallel and
%  calls your transfer method for each scanline of the view.  The source pixel
%  extent is not confined to the image canvas-- that is you can include
%  negative offsets or widths or heights that exceed the image dimension.
%  However, the destination image view is confined to the image canvas-- that
%  is no negative offsets or widths or heights that exceed the image dimension
%  are permitted.
%
%  The callback signature is:
%
%      MagickBooleanType TransferImageViewMethod(const ImageView *source,
%        ImageView *destination,const ssize_t y,const int thread_id,
%        void *context)
%
%  Use this pragma if the view is not single threaded:
%
%    #pragma omp critical
%
%  to define a section of code in your callback transfer method that must be
%  executed by a single thread at a time.
%
%  The format of the TransferImageViewIterator method is:
%
%      MagickBooleanType TransferImageViewIterator(ImageView *source,
%        ImageView *destination,TransferImageViewMethod transfer,void *context)
%
%  A description of each parameter follows:
%
%    o source: the source image view.
%
%    o destination: the destination image view.
%
%    o transfer: the transfer callback method.
%
%    o context: the user defined context.
%
*/
MagickExport MagickBooleanType TransferImageViewIterator(ImageView *source,
  ImageView *destination,TransferImageViewMethod transfer,void *context)
{
  Image
    *destination_image,
    *source_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  size_t
    height,
    width;

  ssize_t
    y;

  assert(source != (ImageView *) NULL);
  assert(source->signature == MagickSignature);
  if (transfer == (TransferImageViewMethod) NULL)
    return(MagickFalse);
  source_image=source->image;
  destination_image=destination->image;
  status=SetImageStorageClass(destination_image,DirectClass,
    destination->exception);
  if (status == MagickFalse)
    return(MagickFalse);
  status=MagickTrue;
  progress=0;
  height=source->extent.height-source->extent.y;
  width=source->extent.width-source->extent.x;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
  #pragma omp parallel for schedule(static) shared(progress,status) \
    dynamic_number_threads(source_image,width,height,1)
#endif
  for (y=source->extent.y; y < (ssize_t) source->extent.height; y++)
  {
    const int
      id = GetOpenMPThreadId();

    MagickBooleanType
      sync;

    register const Quantum
      *restrict pixels;

    register Quantum
      *restrict destination_pixels;

//.........这里部分代码省略.........

MagickExport Image *ChannelFxImage(const Image *image,const char *expression,
  ExceptionInfo *exception)
{
#define ChannelFxImageTag  "ChannelFx/Image"

  ChannelFx
    channel_op;

  ChannelType
    channel_mask;

  char
    token[MaxTextExtent];

  const char
    *p;

  const Image
    *source_image;

  double
    pixel;

  Image
    *destination_image;

  MagickBooleanType
    status;

  PixelChannel
    source_channel,
    destination_channel;

  ssize_t
    channels;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  source_image=image;
  destination_image=CloneImage(source_image,0,0,MagickTrue,exception);
  if (destination_image == (Image *) NULL)
    return((Image *) NULL);
  if (expression == (const char *) NULL)
    return(destination_image);
  destination_channel=RedPixelChannel;
  channel_mask=UndefinedChannel;
  pixel=0.0;
  p=(char *) expression;
  GetMagickToken(p,&p,token);
  channel_op=ExtractChannelOp;
  for (channels=0; *token != '\0'; )
  {
    ssize_t
      i;

    /*
      Interpret channel expression.
    */
    switch (*token)
    {
      case ',':
      {
        GetMagickToken(p,&p,token);
        break;
      }
      case '|':
      {
        if (GetNextImageInList(source_image) != (Image *) NULL)
          source_image=GetNextImageInList(source_image);
        else
          source_image=GetFirstImageInList(source_image);
        GetMagickToken(p,&p,token);
        break;
      }
      case ';':
      {
        Image
          *canvas;

        SetPixelChannelMask(destination_image,channel_mask);
        if ((channel_op == ExtractChannelOp) && (channels == 1))
          (void) SetImageColorspace(destination_image,GRAYColorspace,exception);
        status=SetImageStorageClass(destination_image,DirectClass,exception);
        if (status == MagickFalse)
          {
            destination_image=DestroyImageList(destination_image);
            return(destination_image);
          }
        canvas=CloneImage(source_image,0,0,MagickTrue,exception);
        if (canvas == (Image *) NULL)
          {
            destination_image=DestroyImageList(destination_image);
            return(destination_image);
          }
        AppendImageToList(&destination_image,canvas);
        destination_image=GetLastImageInList(destination_image);
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   F r a m e I m a g e                                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  FrameImage() adds a simulated three-dimensional border around the image.
%  The color of the border is defined by the matte_color member of image.
%  Members width and height of frame_info specify the border width of the
%  vertical and horizontal sides of the frame.  Members inner and outer
%  indicate the width of the inner and outer shadows of the frame.
%
%  The format of the FrameImage method is:
%
%      Image *FrameImage(const Image *image,const FrameInfo *frame_info,
%        const CompositeOperator compose,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o frame_info: Define the width and height of the frame and its bevels.
%
%    o compose: the composite operator.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *FrameImage(const Image *image,const FrameInfo *frame_info,
  const CompositeOperator compose,ExceptionInfo *exception)
{
#define FrameImageTag  "Frame/Image"

  CacheView
    *image_view,
    *frame_view;

  Image
    *frame_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  PixelInfo
    accentuate,
    highlight,
    interior,
    matte,
    shadow,
    trough;

  register ssize_t
    x;

  size_t
    bevel_width,
    height,
    width;

  ssize_t
    y;

  /*
    Check frame geometry.
  */
  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(frame_info != (FrameInfo *) NULL);
  if ((frame_info->outer_bevel < 0) || (frame_info->inner_bevel < 0))
    ThrowImageException(OptionError,"FrameIsLessThanImageSize");
  bevel_width=(size_t) (frame_info->outer_bevel+frame_info->inner_bevel);
  width=frame_info->width-frame_info->x-bevel_width;
  height=frame_info->height-frame_info->y-bevel_width;
  if ((width < image->columns) || (height < image->rows))
    ThrowImageException(OptionError,"FrameIsLessThanImageSize");
  /*
    Initialize framed image attributes.
  */
  frame_image=CloneImage(image,frame_info->width,frame_info->height,MagickTrue,
    exception);
  if (frame_image == (Image *) NULL)
    return((Image *) NULL);
  if (SetImageStorageClass(frame_image,DirectClass,exception) == MagickFalse)
    {
      frame_image=DestroyImage(frame_image);
      return((Image *) NULL);
    }
  if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
      (IsPixelInfoGray(&image->matte_color) == MagickFalse))
    SetImageColorspace(frame_image,sRGBColorspace,exception);
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%     C o m b i n e I m a g e s                                               %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  CombineImages() combines one or more images into a single image.  The
%  grayscale value of the pixels of each image in the sequence is assigned in
%  order to the specified channels of the combined image.   The typical
%  ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc.
%
%  The format of the CombineImages method is:
%
%      Image *CombineImages(const Image *images,const ColorspaceType colorspace,
%        ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o images: the image sequence.
%
%    o colorspace: the image colorspace.
%
%    o exception: return any errors or warnings in this structure.
%
*/
MagickExport Image *CombineImages(const Image *image,
  const ColorspaceType colorspace,ExceptionInfo *exception)
{
#define CombineImageTag  "Combine/Image"

  CacheView
    *combine_view;

  Image
    *combine_image;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  ssize_t
    y;

  /*
    Ensure the image are the same size.
  */
  assert(image != (const Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  combine_image=CloneImage(image,0,0,MagickTrue,exception);
  if (combine_image == (Image *) NULL)
    return((Image *) NULL);
  if (SetImageStorageClass(combine_image,DirectClass,exception) == MagickFalse)
    {
      combine_image=DestroyImage(combine_image);
      return((Image *) NULL);
    }
  (void) SetImageColorspace(combine_image,colorspace,exception);
  if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0)
    combine_image->alpha_trait=BlendPixelTrait;
  /*
    Combine images.
  */
  status=MagickTrue;
  progress=0;
  combine_view=AcquireAuthenticCacheView(combine_image,exception);
  for (y=0; y < (ssize_t) combine_image->rows; y++)
  {
    CacheView
      *image_view;

    const Image
      *next;

    Quantum
      *pixels;

    register const Quantum
      *restrict p;

    register Quantum
      *restrict q;

    register ssize_t
      i;

    if (status == MagickFalse)
      continue;
    pixels=GetCacheViewAuthenticPixels(combine_view,0,y,combine_image->columns,
      1,exception);
//.........这里部分代码省略.........

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R a i s e I m a g e                                                       %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  RaiseImage() creates a simulated three-dimensional button-like effect
%  by lightening and darkening the edges of the image.  Members width and
%  height of raise_info define the width of the vertical and horizontal
%  edge of the effect.
%
%  The format of the RaiseImage method is:
%
%      MagickBooleanType RaiseImage(const Image *image,
%        const RectangleInfo *raise_info,const MagickBooleanType raise)
%
%  A description of each parameter follows:
%
%    o image: the image.
%
%    o raise_info: Define the width and height of the raise area.
%
%    o raise: A value other than zero creates a 3-D raise effect,
%      otherwise it has a lowered effect.
%
*/
MagickExport MagickBooleanType RaiseImage(Image *image,
  const RectangleInfo *raise_info,const MagickBooleanType raise)
{
#define AccentuateFactor  ScaleCharToQuantum(135)
#define HighlightFactor  ScaleCharToQuantum(190)
#define ShadowFactor  ScaleCharToQuantum(190)
#define RaiseImageTag  "Raise/Image"
#define TroughFactor  ScaleCharToQuantum(135)

  CacheView
    *image_view;

  ExceptionInfo
    *exception;

  MagickBooleanType
    status;

  MagickOffsetType
    progress;

  Quantum
    foreground,
    background;

  ssize_t
    y;

  assert(image != (Image *) NULL);
  assert(image->signature == MagickSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  assert(raise_info != (RectangleInfo *) NULL);
  if ((image->columns <= (raise_info->width << 1)) ||
      (image->rows <= (raise_info->height << 1)))
    ThrowBinaryException(OptionError,"ImageSizeMustExceedBevelWidth",
      image->filename);
  foreground=(Quantum) QuantumRange;
  background=(Quantum) 0;
  if (raise == MagickFalse)
    {
      foreground=(Quantum) 0;
      background=(Quantum) QuantumRange;
    }
  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
    return(MagickFalse);
  /*
    Raise image.
  */
  status=MagickTrue;
  progress=0;
  exception=(&image->exception);
  image_view=AcquireCacheView(image);
#if defined(MAGICKCORE_OPENMP_SUPPORT) 
  #pragma omp parallel for schedule(dynamic,4) shared(progress,status) omp_throttle(1)
#endif
  for (y=0; y < (ssize_t) raise_info->height; y++)
  {
    register ssize_t
      x;

    register PixelPacket
      *restrict q;

    if (status == MagickFalse)
      continue;
    q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      {
//.........这里部分代码省略.........