1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/e2gallerypro/e2upload/Backend/Assets/getid3/module.audio.monkey.php	Mon Feb 22 08:02:39 2010 -0500
     1.3 @@ -0,0 +1,216 @@
     1.4 +<?php
     1.5 +// +----------------------------------------------------------------------+
     1.6 +// | PHP version 5                                                        |
     1.7 +// +----------------------------------------------------------------------+
     1.8 +// | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |
     1.9 +// +----------------------------------------------------------------------+
    1.10 +// | This source file is subject to version 2 of the GPL license,         |
    1.11 +// | that is bundled with this package in the file license.txt and is     |
    1.12 +// | available through the world-wide-web at the following url:           |
    1.13 +// | http://www.gnu.org/copyleft/gpl.html                                 |
    1.14 +// +----------------------------------------------------------------------+
    1.15 +// | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |
    1.16 +// +----------------------------------------------------------------------+
    1.17 +// | Authors: James Heinrich <infoØgetid3*org>                            |
    1.18 +// |          Allan Hansen <ahØartemis*dk>                                |
    1.19 +// +----------------------------------------------------------------------+
    1.20 +// | module.audio.monkey.php                                              |
    1.21 +// | Module for analyzing Monkey's Audio files                            |
    1.22 +// | dependencies: NONE                                                   |
    1.23 +// +----------------------------------------------------------------------+
    1.24 +//
    1.25 +// $Id: module.audio.monkey.php,v 1.2 2006/11/02 10:48:01 ah Exp $
    1.26 +
    1.27 +        
    1.28 +        
    1.29 +class getid3_monkey extends getid3_handler
    1.30 +{
    1.31 +
    1.32 +    public function Analyze() {
    1.33 +
    1.34 +        $getid3 = $this->getid3;
    1.35 +
    1.36 +        // based loosely on code from TMonkey by Jurgen Faul <jfaulØgmx*de>
    1.37 +        // http://jfaul.de/atl  or  http://j-faul.virtualave.net/atl/atl.html
    1.38 +        
    1.39 +        $getid3->info['fileformat']            = 'mac';
    1.40 +        $getid3->info['audio']['dataformat']   = 'mac';
    1.41 +        $getid3->info['audio']['bitrate_mode'] = 'vbr';
    1.42 +        $getid3->info['audio']['lossless']     = true;
    1.43 +
    1.44 +        $getid3->info['monkeys_audio']['raw']  = array ();
    1.45 +        $info_monkeys_audio                    = &$getid3->info['monkeys_audio'];
    1.46 +        $info_monkeys_audio_raw                = &$info_monkeys_audio['raw'];
    1.47 +
    1.48 +        // Read file header
    1.49 +        fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET);
    1.50 +        $mac_header_data = fread($getid3->fp, 74);
    1.51 +
    1.52 +        $info_monkeys_audio_raw['magic'] = 'MAC ';  // Magic bytes
    1.53 +
    1.54 +        // Read MAC version
    1.55 +        $info_monkeys_audio_raw['nVersion'] = getid3_lib::LittleEndian2Int(substr($mac_header_data, 4, 2)); // appears to be uint32 in 3.98+
    1.56 +        
    1.57 +        // Parse MAC Header < v3980
    1.58 +        if ($info_monkeys_audio_raw['nVersion'] < 3980) {
    1.59 +        
    1.60 +            getid3_lib::ReadSequence("LittleEndian2Int", $info_monkeys_audio_raw, $mac_header_data, 6,
    1.61 +                array (
    1.62 +                    'nCompressionLevel'     => 2,  
    1.63 +                    'nFormatFlags'          => 2,
    1.64 +                    'nChannels'             => 2,
    1.65 +                    'nSampleRate'           => 4,
    1.66 +                    'nHeaderDataBytes'      => 4,   
    1.67 +                    'nWAVTerminatingBytes'  => 4,
    1.68 +                    'nTotalFrames'          => 4,       
    1.69 +                    'nFinalFrameSamples'    => 4, 
    1.70 +                    'nPeakLevel'            => 4,         
    1.71 +                    'IGNORE-1'              => 2, 
    1.72 +                    'nSeekElements'         => 2
    1.73 +                )
    1.74 +            );
    1.75 +        } 
    1.76 +        
    1.77 +        // Parse MAC Header >= v3980
    1.78 +        else {
    1.79 +
    1.80 +            getid3_lib::ReadSequence("LittleEndian2Int", $info_monkeys_audio_raw, $mac_header_data, 8, 
    1.81 +                array (
    1.82 +                    // APE_DESCRIPTOR
    1.83 +                    'nDescriptorBytes'      => 4,
    1.84 +                    'nHeaderBytes'          => 4, 
    1.85 +                    'nSeekTableBytes'       => 4, 
    1.86 +                    'nHeaderDataBytes'      => 4, 
    1.87 +                    'nAPEFrameDataBytes'    => 4, 
    1.88 +                    'nAPEFrameDataBytesHigh'=> 4, 
    1.89 +                    'nTerminatingDataBytes' => 4, 
    1.90 +                    
    1.91 +                    // MD5 - string
    1.92 +                    'cFileMD5'              => -16, 
    1.93 +                    
    1.94 +                    // APE_HEADER
    1.95 +                    'nCompressionLevel'     => 2,
    1.96 +                    'nFormatFlags'          => 2,
    1.97 +                    'nBlocksPerFrame'       => 4,
    1.98 +                    'nFinalFrameBlocks'     => 4,
    1.99 +                    'nTotalFrames'          => 4,
   1.100 +                    'nBitsPerSample'        => 2,
   1.101 +                    'nChannels'             => 2,
   1.102 +                    'nSampleRate'           => 4
   1.103 +                )
   1.104 +            );
   1.105 +        }
   1.106 +        
   1.107 +        // Process data
   1.108 +        $info_monkeys_audio['flags']['8-bit']         = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0001);
   1.109 +        $info_monkeys_audio['flags']['crc-32']        = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0002);
   1.110 +        $info_monkeys_audio['flags']['peak_level']    = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0004);
   1.111 +        $info_monkeys_audio['flags']['24-bit']        = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0008);
   1.112 +        $info_monkeys_audio['flags']['seek_elements'] = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0010);
   1.113 +        $info_monkeys_audio['flags']['no_wav_header'] = (bool)($info_monkeys_audio_raw['nFormatFlags'] & 0x0020);
   1.114 +        
   1.115 +        $info_monkeys_audio['version']                = $info_monkeys_audio_raw['nVersion'] / 1000;
   1.116 +        
   1.117 +        $info_monkeys_audio['compression']            = getid3_monkey::MonkeyCompressionLevelNameLookup($info_monkeys_audio_raw['nCompressionLevel']);
   1.118 +        
   1.119 +        $info_monkeys_audio['bits_per_sample']        = ($info_monkeys_audio['flags']['24-bit'] ? 24 : ($info_monkeys_audio['flags']['8-bit'] ? 8 : 16));
   1.120 +        
   1.121 +        $info_monkeys_audio['channels']               = $info_monkeys_audio_raw['nChannels'];
   1.122 +        
   1.123 +        $getid3->info['audio']['channels']            = $info_monkeys_audio['channels'];
   1.124 +        
   1.125 +        $info_monkeys_audio['sample_rate']            = $info_monkeys_audio_raw['nSampleRate'];
   1.126 +        
   1.127 +        $getid3->info['audio']['sample_rate']         = $info_monkeys_audio['sample_rate'];
   1.128 +        
   1.129 +        if ($info_monkeys_audio['flags']['peak_level']) {
   1.130 +            $info_monkeys_audio['peak_level']         = $info_monkeys_audio_raw['nPeakLevel'];
   1.131 +            $info_monkeys_audio['peak_ratio']         = $info_monkeys_audio['peak_level'] / pow(2, $info_monkeys_audio['bits_per_sample'] - 1);
   1.132 +        }
   1.133 +        
   1.134 +        // MAC >= v3980
   1.135 +        if ($info_monkeys_audio_raw['nVersion'] >= 3980) {
   1.136 +            $info_monkeys_audio['samples']            = (($info_monkeys_audio_raw['nTotalFrames'] - 1) * $info_monkeys_audio_raw['nBlocksPerFrame']) + $info_monkeys_audio_raw['nFinalFrameBlocks'];
   1.137 +        } 
   1.138 +        
   1.139 +        // MAC < v3980
   1.140 +        else {
   1.141 +            $info_monkeys_audio['samples_per_frame']  = getid3_monkey::MonkeySamplesPerFrame($info_monkeys_audio_raw['nVersion'], $info_monkeys_audio_raw['nCompressionLevel']);
   1.142 +            $info_monkeys_audio['samples']            = (($info_monkeys_audio_raw['nTotalFrames'] - 1) * $info_monkeys_audio['samples_per_frame']) + $info_monkeys_audio_raw['nFinalFrameSamples'];
   1.143 +        }
   1.144 +        
   1.145 +        $info_monkeys_audio['playtime']               = $info_monkeys_audio['samples'] / $info_monkeys_audio['sample_rate'];
   1.146 +        
   1.147 +        $getid3->info['playtime_seconds']             = $info_monkeys_audio['playtime'];
   1.148 +
   1.149 +        $info_monkeys_audio['compressed_size']        = $getid3->info['avdataend'] - $getid3->info['avdataoffset'];
   1.150 +        $info_monkeys_audio['uncompressed_size']      = $info_monkeys_audio['samples'] * $info_monkeys_audio['channels'] * ($info_monkeys_audio['bits_per_sample'] / 8);
   1.151 +        $info_monkeys_audio['compression_ratio']      = $info_monkeys_audio['compressed_size'] / ($info_monkeys_audio['uncompressed_size'] + $info_monkeys_audio_raw['nHeaderDataBytes']);
   1.152 +        $info_monkeys_audio['bitrate']                = (($info_monkeys_audio['samples'] * $info_monkeys_audio['channels'] * $info_monkeys_audio['bits_per_sample']) / $info_monkeys_audio['playtime']) * $info_monkeys_audio['compression_ratio'];
   1.153 +
   1.154 +        $getid3->info['audio']['bitrate']             = $info_monkeys_audio['bitrate'];
   1.155 +        
   1.156 +        $getid3->info['audio']['bits_per_sample']     = $info_monkeys_audio['bits_per_sample'];
   1.157 +        $getid3->info['audio']['encoder']             = 'MAC v'.number_format($info_monkeys_audio['version'], 2);
   1.158 +        $getid3->info['audio']['encoder_options']     = ucfirst($info_monkeys_audio['compression']).' compression';
   1.159 +        
   1.160 +        // MAC >= v3980 - get avdataoffsets from MAC header
   1.161 +        if ($info_monkeys_audio_raw['nVersion'] >= 3980) {
   1.162 +            $getid3->info['avdataoffset'] += $info_monkeys_audio_raw['nDescriptorBytes'] + $info_monkeys_audio_raw['nHeaderBytes'] + $info_monkeys_audio_raw['nSeekTableBytes'] + $info_monkeys_audio_raw['nHeaderDataBytes'];
   1.163 +            $getid3->info['avdataend']    -= $info_monkeys_audio_raw['nTerminatingDataBytes'];
   1.164 +        } 
   1.165 +        
   1.166 +        // MAC < v3980 Add size of MAC header to avdataoffset
   1.167 +        else {
   1.168 +            $getid3->info['avdataoffset'] += 8;
   1.169 +        }
   1.170 +
   1.171 +        // Convert md5sum to 32 byte string
   1.172 +        if (@$info_monkeys_audio_raw['cFileMD5']) {
   1.173 +            if ($info_monkeys_audio_raw['cFileMD5'] !== str_repeat("\x00", 16)) {
   1.174 +                $getid3->info['md5_data_source'] = '';
   1.175 +                $md5 = $info_monkeys_audio_raw['cFileMD5'];
   1.176 +                for ($i = 0; $i < strlen($md5); $i++) {
   1.177 +                    $getid3->info['md5_data_source'] .= str_pad(dechex(ord($md5{$i})), 2, '00', STR_PAD_LEFT);
   1.178 +                }
   1.179 +                if (!preg_match('/^[0-9a-f]{32}$/', $getid3->info['md5_data_source'])) {
   1.180 +                    unset($getid3->info['md5_data_source']);
   1.181 +                }
   1.182 +            }
   1.183 +        }
   1.184 +        
   1.185 +
   1.186 +        return true;
   1.187 +    }
   1.188 +
   1.189 +    
   1.190 +    
   1.191 +    public static function MonkeyCompressionLevelNameLookup($compression_level) {
   1.192 +        
   1.193 +        static $lookup = array (
   1.194 +            0     => 'unknown',
   1.195 +            1000  => 'fast',
   1.196 +            2000  => 'normal',
   1.197 +            3000  => 'high',
   1.198 +            4000  => 'extra-high',
   1.199 +            5000  => 'insane'
   1.200 +        );
   1.201 +        return (isset($lookup[$compression_level]) ? $lookup[$compression_level] : 'invalid');
   1.202 +    }
   1.203 +
   1.204 +    
   1.205 +    
   1.206 +    public static function MonkeySamplesPerFrame($version_id, $compression_level) {
   1.207 +
   1.208 +        if ($version_id >= 3950) {
   1.209 +            return 73728 * 4;
   1.210 +        } 
   1.211 +        if (($version_id >= 3900)  || (($version_id >= 3800) && ($compression_level == 4000))) {
   1.212 +            return 73728;
   1.213 +        }
   1.214 +        return 9216;
   1.215 +    }
   1.216 +
   1.217 +}
   1.218 +
   1.219 +?>
   1.220 \ No newline at end of file