<?php

	for ($file = 1; $file <= 1000; $file ++)
	{
		$filename = "original/".$file.".csv";
		$handle = fopen($filename, "r");
		$contents = fread($handle, filesize($filename));
		fclose($handle);

		$filename = "frames/".$file;
		$output_file = fopen($filename, "wb");

		$lines = explode("\n", chop($contents));	

		$prev = array(0,0,0,0);		
		$delta = array(0,0,0,0);
		
		for ($i = 0; $i < 12300; $i ++)
		{
			$coords = explode(",", chop($lines[$i]));

			$delta[0] = round($coords[0]) - $prev[0];
			$delta[1] = round($coords[1]) - $prev[1];
			$delta[2] = round($coords[2]) - $prev[2];
			$delta[3] = round($coords[3]) - $prev[3];

			fwrite($output_file, pack("v", $delta[0]));
			fwrite($output_file, pack("v", $delta[1]));
			fwrite($output_file, pack("v", $delta[2]));
			fwrite($output_file, pack("v", $delta[3]));
			
			$prev[0] = 	round($coords[0]);
			$prev[1] = 	round($coords[1]);
			$prev[2] = 	round($coords[2]);
			$prev[3] = 	round($coords[3]);
			
		}
		
		fclose($output_file);
	
		echo "FILE ".$file." DONE!\n";
	}
	
	
	
?>