class conversionHandler {
 
	var $ffmpegPath;
	var $basePath;
	var $outputPath;
	var $attribs;
	var $error;
 
	function conversionHandler() {
		$this->__construct();
	}
 
	function __construct() {
		ini_set( 'max_execution_time',3600 );
		$this->ffmpegPath = '/usr/bin';
		$this->checkFFMPEG();
		$this->basePath = $_SERVER['DOCUMENT_ROOT'];
		$this->attribs = array();
		$this->error = array();
	}
 
	function setConverterPath( $path ) {
		if ( !is_dir( $path ) ) {
			$this->error[] = "{$path} is not a valid directory for the converter path";
		}
		$this->ffmpegPath = $path;
	}
 
	function setBasePath( $path ) {
		if ( !is_dir( $path ) ) {
			$this->error[] = "{$path} is not a valid directory for the base path";
		}
		$this->basePath = $path;
	}
 
	function checkFFMPEG() {
		if ( !exec( "{$this->ffmpegPath}/ffmpeg" ) ) {
			$this->error[] = "FFMPEG NOT FOUND AT {$this->ffmpegPath}";
		}
	}
 
	function inputFile( $file ) {
		$file = $this->basePath . '/' . $file;
		if ( !file_exists( $file ) ) {
			$this->error[] = "Input file '{$file}' can not be found!";
		}
		$this->attribs['i'] = $file;
	}
 
	function fileType( $type ) {
		$this->attribs['f'] = $type;
	}
 
	function audioChannel( $channel ) {
		$this->attribs['ac'] = $channel;
	}
 
	function audioCodec( $codec ) {
		$this->attribs['acodec'] = $codec;
	}
 
	function videoCodec( $codec ) {
		$this->attribs['vcodec'] = $codec;
	}
 
	function videoTarget( $target ) {
		$this->attribs['target'] = $target;
	}
 
	function videoSize( $size ) {
		$this->attribs['s'] = $size;
	}
 
	function audioRate( $rate ) {
		$this->attribs['ar'] = $rate;
	}
 
	function audioBitrate( $bitrate ) {
		$this->attribs['ab'] = $bitrate;
	}
 
	function videoBitrate( $bitrate ) {
		$this->attribs['b'] = $bitrate;
	}
 
	function removeAudio() {
		$this->attribs['an'] = '';
	}
 
	function removeVideo() {
		$this->attribs['vn'] = '';
	}
 
	function overwrite() {
		$this->attribs['y'] = '';
	}
 
	function setOutputPath( $path ) {
		if ( !is_dir( $path ) ) {
			$this->error[] = "{$path} is not a valid directory for the output path";
		}
		$this->outputPath = $path;
	}
 
	function getThumbnail( $time,$folder ) {
		$this->attribs['ss'] = $time;
		$this->attribs['r'] = '1';
		$this->attribs['vframes'] = '1';
	}
 
	function buildCommand() {
		$cmd = "{$this->ffmpegPath}/ffmpeg ";
		foreach( $this->attribs as $attr => $value ) {
			$cmd .= "-{$attr} {$value} ";
		}
		$time = $this->microtimeFloat();
		$cmd .= "{$this->outputPath}/{$time}.{$this->attribs['f']}";
		$array['cmd'] = $cmd;
		$array['file'] = "{$time}.{$this->attribs['f']}";
		return $array;
	}
 
	function convert() {
		$cmd = $this->buildCommand();
		$this->error[] = "Command: {$cmd['cmd']} executed";
		exec( $cmd['cmd'],$output );
		if ( !file_exists( $this->outputPath . '/' . $cmd['file'] ) ) {
			$this->error[] = "Command Failed";
			return false;
		}
		unlink( $this->attribs['i'] );
		return $cmd['file'];
	}
 
	function microtimeFloat() {
		list( $usec,$sec) = explode( " ",microtime() );
		return str_replace( '.','',( (float)$usec + (float)$sec ) );
	}
 
	function debug() {
		echo '<pre>';
		print_r( $this->error );
		echo '</pre>';
	}
 
}