getid3 component for cakephp

What is getID3?

getID3() is an open-source, cross-platform software library for the PHP language written by James Heinrich and Allan Hansen. getID3() can extract information from multimedia file formats: audio, video and images in various formats. Information extracted includes playtime, metadata, bitrate, sample rate, number of channels, and much more. getID3() can also write metadata (tags) to several formats.

Component for CakePHP

Its very straight forward to use getid3() in cakephp and this article describes how i used it in my cakephp application. I downloaded getid3() library, extracted it to vendors directory and created a component named getid3. Then i used it in my controller class to extract the media file information.

Although i have extracted only the necessary file information for my system to work, you may extract additional information by making a few changes in component’s extract() function (Hint: try printing $getid3->info array for available information). Anyone having problem implementing may through a comment here and maybe i could help you.

To download getid3() library click here.

Source code for app/controllers/components/getid3.php component:

class Getid3Component extends Object
{
	
	var $controller;
	var $result = array();
	
	function __construct()	{
		set_time_limit(20*3600);
		ignore_user_abort(false);
		
		vendor('getid3/getid3');
		vendor('getid3/extras/abstraction');
	}

	function info($filepath)	{

		$getid3 = new getID3;
		$getid3->encoding = 'UTF-8';
		
		// Tell browser to use UTF-8 encoding as well.
		header('Content-Type: text/html; charset=UTF-8');
		try {
		
			$getid3->Analyze($filepath);
			return $getid3->info;
		
		}
		catch (Exception $e) {			
			return 'An error occured: ' .  $e->message;
		}		
	}	

	function extract($full_name)	{
	
		$getid3 = new getID3;
		$getid3->encoding = 'UTF-8';
		
		if (!is_file($full_name)) {
			return "ERROR: file ($full_name) does not exists";
		}
		
		$g = new xml_gen;
		
		try {
		
			$time = getmicrotime();

			$getid3->Analyze($full_name);//die;
			$time = getmicrotime() - $time;

			$this->result['filename'] = basename($getid3->filename);
			$this->result['filesize'] = @$getid3->info['filesize'];
			$this->result['fileformat'] = @$getid3->info['fileformat'];
			
			if (@$getid3->info['audio']['dataformat'] && $getid3->info['audio']['dataformat'] != $getid3->info['fileformat']) {
				$this->result['audio']['dataformat'] = @$getid3->info['fileformat'];
			}
			
			if (@$getid3->info['video']['dataformat'] && $getid3->info['video']['dataformat'] != $getid3->info['fileformat'] && $getid3->info['video']['dataformat'] != @$getid3->info['audio']['dataformat']) {
				$this->result['video']['dataformat'] = @$getid3->info['fileformat'];
			}
			
			$this->result['length'] = @$getid3->info['playtime_string'];
	
			$this->result['bitrate'] = (@$getid3->info['bitrate'] ? number_format($getid3->info['bitrate']/1000) . 'k' : '');
			
			$this->result['audio']['sample_rate'] = @$getid3->info['audio']['sample_rate'] ? number_format($getid3->info['audio']['sample_rate']) . '/' .  (@$getid3->info['audio']['bits_per_sample'] ? $getid3->info['audio']['bits_per_sample'] . '/' : '') .  @$getid3->info['audio']['channels'] : '';
		
			$this->result['artist'] = $this->result['title'] = $this->result['album'] = '';
			
			if (@$getid3->info['tags']) {
				foreach ($getid3->info['tags'] as $tag => $tag_info) {
					if (@$getid3->info['tags'][$tag]['artist'] || @$getid3->info['tags'][$tag]['title'] || @$getid3->info['tags'][$tag]['album'] || @$getid3->info['tags'][$tag]['genre']) {
						$this->result['artist'] = @implode('', @$getid3->info['tags'][$tag]['artist']);
						$this->result['title']  = @implode('', @$getid3->info['tags'][$tag]['title']);
						$this->result['album']  = @implode('', @$getid3->info['tags'][$tag]['album']);
						$this->result['genre']  = @implode('', @$getid3->info['tags'][$tag]['genre']);
						break;
					}
				}
			}
		
			$this->result['tags'] = @implode(", ", @array_keys(@$getid3->info['tags']));
		
			$this->result['warning'] = @implode("
", @$getid3->info['warning']);
			
			return $this->result;
		}
		
		catch (Exception $e) {
			return 'ERROR: ' . $e->message;
		}
	}	
}

Source code for app/controllers/albums_controller:

class AlbumsController extends AppController{
	................
	var $components = array ('...','...','Getid3');//loading getid3 component along with other components
	................
	................
	function getInfo()	{	

		$info = $this->Getid3->extract("D:/path/to/mediafile/Backdrifts.m4a");	

		if(!is_array($info))	{
			__('No meta data found for this song! Can not continue.. exiting...');
			exit;
		}

		pr($info);
	}
}

I hope this helps someone.

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