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libgd 2.0 / gd2time.c

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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;
}