code/libpng/png.c

#define _XOPEN_SOURCE
#include "img.h"
#include <stdlib.h>
#include <stdio.h>

int main(int argc, char** argv){

	if (argc != 4)
	{
		fprintf(stderr, "\nusage: %s count width height", argv[0]);
		exit(EXIT_FAILURE);
	}

	int width, height, c;

	c = atoi(argv[1]);
	width = atoi(argv[2]);
	height = atoi(argv[3]);

	pix_row rows[width];
	pix p;
	char filename[60];
	int i,j,x,y,count;
	image img;
	p.r = 200;
	p.g = 200;
	p.b = 200;

	srand48(1000);
	
	for (count=0; count<(1000);count++){

		for (i=0;i<width;i++){
			rows[i].p = malloc (height * sizeof(pix));
			for (j=0 ;j<height; j++){
				p.r = (int) (drand48() * 255);
				p.g = (int) (drand48() * 255);
				p.b = (int) (drand48() * 255);
				rows[i].p[j] = p;
			}
		}
		sprintf(filename, "images/image%05d.png", count);
		img = initialize_png("image010", filename, width, height);
		write_image(&img, rows);
		finish_image(&img);

		for (i=0; i<width;i++){

			free(rows[i].p);
		}
	}

	return (0);

}