/common/libraries/plugin/getid3/demos/demo.audioinfo.class.php

<?php



// +----------------------------------------------------------------------+
// | PHP version 4.1.0                                                    |
// +----------------------------------------------------------------------+
// | Placed in public domain by Allan Hansen, 2002. Share and enjoy!      |
// +----------------------------------------------------------------------+
// | /demo/demo.audioinfo.class.php                                       |
// |                                                                      |
// | Example wrapper class to extract information from audio files        |
// | through getID3().                                                    |
// |                                                                      |
// | getID3() returns a lot of information. Much of this information is   |
// | not needed for the end-application. It is also possible that some    |
// | users want to extract specific info. Modifying getID3() files is a   |
// | bad idea, as modifications needs to be done to future versions of    |
// | getID3().                                                            |
// |                                                                      |
// | Modify this wrapper class instead. This example extracts certain     |
// | fields only and adds a new root value - encoder_options if possible. |
// | It also checks for mp3 files with wave headers.                      |
// +----------------------------------------------------------------------+
// | Example code:                                                        |
// |   $au = new AudioInfo();                                             |
// |   print_r($au->Info('file.flac');                                    |
// +----------------------------------------------------------------------+
// | Authors: Allan Hansen <ah???artemis*dk>                                |
// +----------------------------------------------------------------------+
//




/**
 * getID3() settings
 */



// Updated By systho in order to make the file
//require_once('../getid3/getid3.php');
require_once (dirname(__FILE__) . '/../getid3.php');



/**
 * Class for extracting information from audio files with getID3().
 */



class AudioInfo

{

    

    /**
     * Private variables
     */

    var $result = NULL;

    var $info = NULL;



    /**
     * Constructor
     */

    

    function __construct()

    {

        

        // Initialize getID3 engine
        $this->getID3 = new getID3();

        $this->getID3->option_md5_data = true;

        $this->getID3->option_md5_data_source = true;

        $this->getID3->encoding = 'UTF-8';

    }



    /**
     * Extract information - only public function
     *
     * @access   public
     * @param    string  file    Audio file to extract info from.
     */

    

    function Info($file)

    {

        

        // Analyze file
        $this->info = $this->getID3->analyze($file);

        

        // Exit here on error
        if (isset($this->info['error']))

        {

            return array('error' => $this->info['error']);

        }

        

        // Init wrapper object
        $this->result = array();

        $this->result['format_name'] = @$this->info['fileformat'] . '/' . @$this->info['audio']['dataformat'] . (isset($this->info['video']['dataformat']) ? '/' . @$this->info['video']['dataformat'] : '');

        $this->result['encoder_version'] = @$this->info['audio']['encoder'];

        $this->result['encoder_options'] = @$this->info['audio']['encoder_options'];

        $this->result['bitrate_mode'] = @$this->info['audio']['bitrate_mode'];

        $this->result['channels'] = @$this->info['audio']['channels'];

        $this->result['sample_rate'] = @$this->info['audio']['sample_rate'];

        $this->result['bits_per_sample'] = @$this->info['audio']['bits_per_sample'];

        $this->result['playing_time'] = @$this->info['playtime_seconds'];

        $this->result['avg_bit_rate'] = @$this->info['audio']['bitrate'];

        $this->result['tags'] = @$this->info['tags'];

        $this->result['comments'] = @$this->info['comments'];

        $this->result['warning'] = @$this->info['warning'];

        $this->result['md5'] = @$this->info['md5_data'];

        

        // Post getID3() data handling based on file format
        $method = @$this->info['fileformat'] . 'Info';

        if (@$this->info['fileformat'] && method_exists($this, $method))

        {

            $this->$method();

        }

        

        return $this->result;

    }



    /**
     * post-getID3() data handling for AAC files.
     *
     * @access   private
     */

    

    function aacInfo()

    {

        $this->result['format_name'] = 'AAC';

    }



    /**
     * post-getID3() data handling for Wave files.
     *
     * @access   private
     */

    

    function riffInfo()

    {

        if ($this->info['audio']['dataformat'] == 'wav')

        {

            

            $this->result['format_name'] = 'Wave';

        

        }

        else 

            if (ereg('^mp[1-3]$', $this->info['audio']['dataformat']))

            {

                

                $this->result['format_name'] = strtoupper($this->info['audio']['dataformat']);

            

            }

            else

            {

                

                $this->result['format_name'] = 'riff/' . $this->info['audio']['dataformat'];

            

            }

    }



    /**
     * * post-getID3() data handling for FLAC files.
     *
     * @access   private
     */

    

    function flacInfo()

    {

        $this->result['format_name'] = 'FLAC';

    }



    /**
     * post-getID3() data handling for Monkey's Audio files.
     *
     * @access   private
     */

    

    function macInfo()

    {

        $this->result['format_name'] = 'Monkey\'s Audio';

    }



    /**
     * post-getID3() data handling for Lossless Audio files.
     *
     * @access   private
     */

    

    function laInfo()

    {

        $this->result['format_name'] = 'La';

    }



    /**
     * post-getID3() data handling for Ogg Vorbis files.
     *
     * @access   private
     */

    

    function oggInfo()

    {

        if ($this->info['audio']['dataformat'] == 'vorbis')

        {

            

            $this->result['format_name'] = 'Ogg Vorbis';

        

        }

        else 

            if ($this->info['audio']['dataformat'] == 'flac')

            {

                

                $this->result['format_name'] = 'Ogg FLAC';

            

            }

            else 

                if ($this->info['audio']['dataformat'] == 'speex')

                {

                    

                    $this->result['format_name'] = 'Ogg Speex';

                

                }

                else

                {

                    

                    $this->result['format_name'] = 'Ogg ' . $this->info['audio']['dataformat'];

                

                }

    }



    /**
     * post-getID3() data handling for Musepack files.
     *
     * @access   private
     */

    

    function mpcInfo()

    {

        $this->result['format_name'] = 'Musepack';

    }



    /**
     * post-getID3() data handling for MPEG files.
     *
     * @access   private
     */

    

    function mp3Info()

    {

        $this->result['format_name'] = 'MP3';

    }



    /**
     * post-getID3() data handling for MPEG files.
     *
     * @access   private
     */

    

    function mp2Info()

    {

        $this->result['format_name'] = 'MP2';

    }



    /**
     * post-getID3() data handling for MPEG files.
     *
     * @access   private
     */

    

    function mp1Info()

    {

        $this->result['format_name'] = 'MP1';

    }



    /**
     * post-getID3() data handling for WMA files.
     *
     * @access   private
     */

    

    function asfInfo()

    {

        $this->result['format_name'] = strtoupper($this->info['audio']['dataformat']);

    }



    /**
     * post-getID3() data handling for Real files.
     *
     * @access   private
     */

    

    function realInfo()

    {

        $this->result['format_name'] = 'Real';

    }



    /**
     * post-getID3() data handling for VQF files.
     *
     * @access   private
     */

    

    function vqfInfo()

    {

        $this->result['format_name'] = 'VQF';

    }



}



?>