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#include <stdio.h>
#include <stdlib.h>		/* for atoi */
#include <time.h>		/* For time */
#include "gd.h"

/* A short program which converts a .png file into a .gd file, for
   your convenience in creating images on the fly from a
   basis image that must be loaded quickly. The .gd format
   is not intended to be a general-purpose format. */

int
main (int argc, char **argv)
{
  gdImagePtr im;
  FILE *in;
  int x, y, w, h;
  int c;
  int i;
  int t0;

  if (argc != 7)
    {
      fprintf (stderr, "Usage: gd2time filename.gd count x y w h\n");
      exit (1);
    }

  c = atoi (argv[2]);
  x = atoi (argv[3]);
  y = atoi (argv[4]);
  w = atoi (argv[5]);
  h = atoi (argv[6]);

  printf ("Extracting %d times from (%d, %d), size is %dx%d\n", c, x, y, w, h);

  t0 = time (0);
  for (i = 0; i < c; i++)
    {
      in = fopen (argv[1], "rb");
      if (!in)
	{
	  fprintf (stderr, "Input file does not exist!\n");
	  exit (1);
	}

      im = gdImageCreateFromGd2Part (in, x, y, w, h);
      fclose (in);

      if (!im)
	{
	  fprintf (stderr, "Error reading source file!\n");
	  exit (1);
	}
      gdImageDestroy (im);
    };
  t0 = time (0) - t0;
  printf ("%d seconds to extract (& destroy) %d times\n", t0, c);

  return 0;
}