text: /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
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  %                                                                             %
  %           PPPP    RRRR    EEEEE  PPPP   RRRR   EEEEE  SSSSS  SSSSS          %
  %           P   P   R   R   E      P   P  R   R  E      SS     SS             %
  %           PPPP    RRRR    EEE    PPPP   RRRR   EEE     SSS    SSS           %
  %           P       R R     E      P      R R    E         SS     SS          %
  %           P       R  R    EEEEE  P      R  R   EEEEE  SSSSS  SSSSS          %
  %                                                                             %
  %                                                                             %
  %                        ImageMagick Prepress Methods.                        %
  %                                                                             %
  %                              Software Design                                %
  %                                John Cristy                                  %
  %                                October 2001                                 %
  %                                                                             %
  %                                                                             %
  %  Copyright 1999-2008 ImageMagick Studio LLC, a non-profit organization      %
  %  dedicated to making software imaging solutions freely available.           %
  %                                                                             %
  %  You may not use this file except in compliance with the License.  You may  %
  %  obtain a copy of the License at                                            %
  %                                                                             %
  %    http://www.imagemagick.org/script/license.php                            %
  %                                                                             %
  %  Unless required by applicable law or agreed to in writing, software        %
  %  distributed under the License is distributed on an "AS IS" BASIS,          %
  %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  %  See the License for the specific language governing permissions and        %
  %  limitations under the License.                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %
  */
  
  /*
    Include declarations.
  */
  #include "magick/studio.h"
  #include "magick/exception.h"
  #include "magick/exception-private.h"
  #include "magick/hashmap.h"
  #include "magick/image.h"
  #include "magick/list.h"
  #include "magick/memory_.h"
  #include "magick/prepress.h"
  #include "magick/registry.h"
  #include "magick/semaphore.h"
  #include "magick/splay-tree.h"
  #include "magick/string_.h"
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   G e t I m a g e T o t a l I n k D e n s i t y                             %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  GetImageTotalInkDensity() returns the total ink density for a CMYK image.
  %  Total Ink Density (TID) is determined by adding the CMYK values in the
  %  darkest shadow area in an image.
  %
  %  The format of the GetImageTotalInkDensity method is:
  %
  %      double GetImageTotalInkDensity(const Image *image)
  %
  %  A description of each parameter follows:
  %
  %    o image: the image.
  %
  */
  MagickExport double GetImageTotalInkDensity(Image *image)
  {
    double
      density,
      total_ink_density;
  
    long
      y;
  
    register const PixelPacket
      *p;
  
    register IndexPacket
      *indexes;
  
    register long
      x;
  
    assert(image != (Image *) NULL);
    if (image->debug != MagickFalse)
      (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
    assert(image->signature == MagickSignature);
    if (image->colorspace != CMYKColorspace)
      {
        (void) ThrowMagickException(&image->exception,GetMagickModule(),
          ImageError,"ColorSeparatedImageRequired","`%s'",image->filename);
        return(0.0);
      }
    total_ink_density=0.0;
    for (y=0; y < (long) image->rows; y++)
    {
      p=AcquireImagePixels(image,0,y,image->columns,1,&image->exception);
      if (p == (const PixelPacket *) NULL)
        break;
      indexes=GetIndexes(image);
      for (x=0; x < (long) image->columns; x++)
      {
        density=(double) p->red+p->green+p->blue+indexes[x];
        if (density > total_ink_density)
          total_ink_density=density;
        p++;
      }
    }
    return(total_ink_density);
  }
  