utilities/compare.c

/*
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%               CCCC   OOO   M   M  PPPP    AAA   RRRR    EEEEE               %
%              C      O   O  MM MM  P   P  A   A  R   R   E                   %
%              C      O   O  M M M  PPPP   AAAAA  RRRR    EEE                 %
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%               CCCC   OOO   M   M  P      A   A  R  R    EEEEE               %
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%                        Image Comparison Utility                             %
%                                                                             %
%                                                                             %
%                           Software Design                                   %
%                             John Cristy                                     %
%                            December 2003                                    %
%                                                                             %
%                                                                             %
%  Copyright 1999-2009 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.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The compare utility mathematically and visually annotates the difference
% between an image and its reconstruction.
%
*/

/*
  Include declarations.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include "wand/MagickWand.h"
#if defined(__WINDOWS__)
#include <windows.h>
#endif

/*
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*/
int main(int argc,char **argv)
{
  char
    *metadata,
    *option;

  double
    elapsed_time,
    user_time;

  ExceptionInfo
    *exception;

  ImageInfo
    *image_info;

  MagickBooleanType
    regard_warnings,
    status;

  register long
    i;

  TimerInfo
    *timer;

  unsigned long
    iterations;

  MagickCoreGenesis(*argv,MagickTrue);
  exception=AcquireExceptionInfo();
  iterations=1;
  status=MagickFalse;
  regard_warnings=MagickFalse;
  for (i=1; i < (long) (argc-1); i++)
  {
    option=argv[i];
    if ((strlen(option) == 1) || ((*option != '-') && (*option != '+')))
      continue;
    if (LocaleCompare("bench",option+1) == 0)
      iterations=(unsigned long) atol(argv[++i]);
    if (LocaleCompare("debug",option+1) == 0)
      (void) SetLogEventMask(argv[++i]);
    if (LocaleCompare("regard-warnings",option+1) == 0)
      regard_warnings=MagickTrue;
  }
  timer=(TimerInfo *) NULL;
  if (iterations > 1)
    timer=AcquireTimerInfo();
  for (i=0; i < (long) iterations; i++)
  {
    image_info=AcquireImageInfo();
    metadata=(char *) NULL;
    status=CompareImageCommand(image_info,argc,argv,&metadata,exception);
    if (exception->severity != UndefinedException)
      {
        if ((exception->severity > ErrorException) ||
            (regard_warnings != MagickFalse))
          status=MagickTrue;
        CatchException(exception);
      }
    if (metadata != (char *) NULL)
      {
        (void) fputs(metadata,stdout);
        (void) fputc('\n',stdout);
        metadata=DestroyString(metadata);
      }
    image_info=DestroyImageInfo(image_info);
  }
  if (iterations > 1)
    {
      elapsed_time=GetElapsedTime(timer);
      user_time=GetUserTime(timer);
      (void) fprintf(stderr,"Performance: %lui %gips %0.3fu %ld:%02ld.%03ld\n",
        iterations,1.0*iterations/elapsed_time,user_time,(long)
        (elapsed_time/60.0),(long) floor(fmod(elapsed_time,60.0)),
        (long) (1000.0*(elapsed_time-floor(elapsed_time))));
      timer=DestroyTimerInfo(timer);
    }
  exception=DestroyExceptionInfo(exception);
  MagickCoreTerminus();
  return(status == MagickFalse ? 0 : 1);
}