vendor/james-heinrich/getid3/demos/demo.audioinfo.class.php

   1 <?php
   2
   3 // +----------------------------------------------------------------------+
   4 // | PHP version 4.1.0                                                    |
   5 // +----------------------------------------------------------------------+
   6 // | Placed in public domain by Allan Hansen, 2002. Share and enjoy!      |
   7 // +----------------------------------------------------------------------+
   8 // | /demo/demo.audioinfo.class.php                                       |
   9 // |                                                                      |
  10 // | Example wrapper class to extract information from audio files        |
  11 // | through getID3().                                                    |
  12 // |                                                                      |
  13 // | getID3() returns a lot of information. Much of this information is   |
  14 // | not needed for the end-application. It is also possible that some    |
  15 // | users want to extract specific info. Modifying getID3() files is a   |
  16 // | bad idea, as modifications needs to be done to future versions of    |
  17 // | getID3().                                                            |
  18 // |                                                                      |
  19 // | Modify this wrapper class instead. This example extracts certain     |
  20 // | fields only and adds a new root value - encoder_options if possible. |
  21 // | It also checks for mp3 files with wave headers.                      |
  22 // +----------------------------------------------------------------------+
  23 // | Example code:                                                        |
  24 // |   $au = new AudioInfo();                                             |
  25 // |   print_r($au->Info('file.flac');                                    |
  26 // +----------------------------------------------------------------------+
  27 // | Authors: Allan Hansen <ahØartemis*dk>                                |
  28 // +----------------------------------------------------------------------+
  29 //
  30
  31
  32
  33 /**
  34 * getID3() settings
  35 */
  36
  37 require_once('../getid3/getid3.php');
  38
  39
  40
  41
  42 /**
  43 * Class for extracting information from audio files with getID3().
  44 */
  45
  46 class AudioInfo {
  47
  48         /**
  49         * Private variables
  50         */
  51         var $result = NULL;
  52         var $info   = NULL;
  53
  54
  55
  56
  57         /**
  58         * Constructor
  59         */
  60
  61         function AudioInfo() {
  62
  63                 // Initialize getID3 engine
  64                 $this->getID3 = new getID3;
  65                 $this->getID3->option_md5_data        = true;
  66                 $this->getID3->option_md5_data_source = true;
  67                 $this->getID3->encoding               = 'UTF-8';
  68         }
  69
  70
  71
  72
  73         /**
  74         * Extract information - only public function
  75         *
  76         * @access   public
  77         * @param    string  file    Audio file to extract info from.
  78         */
  79
  80         function Info($file) {
  81
  82                 // Analyze file
  83                 $this->info = $this->getID3->analyze($file);
  84
  85                 // Exit here on error
  86                 if (isset($this->info['error'])) {
  87                         return array ('error' => $this->info['error']);
  88                 }
  89
  90                 // Init wrapper object
  91                 $this->result = array();
  92                 $this->result['format_name']     = (isset($this->info['fileformat']) ? $this->info['fileformat'] : '').'/'.(isset($this->info['audio']['dataformat']) ? $this->info['audio']['dataformat'] : '').(isset($this->info['video']['dataformat']) ? '/'.$this->info['video']['dataformat'] : '');
  93                 $this->result['encoder_version'] = (isset($this->info['audio']['encoder'])         ? $this->info['audio']['encoder']         : '');
  94                 $this->result['encoder_options'] = (isset($this->info['audio']['encoder_options']) ? $this->info['audio']['encoder_options'] : '');
  95                 $this->result['bitrate_mode']    = (isset($this->info['audio']['bitrate_mode'])    ? $this->info['audio']['bitrate_mode']    : '');
  96                 $this->result['channels']        = (isset($this->info['audio']['channels'])        ? $this->info['audio']['channels']        : '');
  97                 $this->result['sample_rate']     = (isset($this->info['audio']['sample_rate'])     ? $this->info['audio']['sample_rate']     : '');
  98                 $this->result['bits_per_sample'] = (isset($this->info['audio']['bits_per_sample']) ? $this->info['audio']['bits_per_sample'] : '');
  99                 $this->result['playing_time']    = (isset($this->info['playtime_seconds'])         ? $this->info['playtime_seconds']         : '');
 100                 $this->result['avg_bit_rate']    = (isset($this->info['audio']['bitrate'])         ? $this->info['audio']['bitrate']         : '');
 101                 $this->result['tags']            = (isset($this->info['tags'])                     ? $this->info['tags']                     : '');
 102                 $this->result['comments']        = (isset($this->info['comments'])                 ? $this->info['comments']                 : '');
 103                 $this->result['warning']         = (isset($this->info['warning'])                  ? $this->info['warning']                  : '');
 104                 $this->result['md5']             = (isset($this->info['md5_data'])                 ? $this->info['md5_data']                 : '');
 105
 106                 // Post getID3() data handling based on file format
 107                 $method = (isset($this->info['fileformat']) ? $this->info['fileformat'] : '').'Info';
 108                 if ($method && method_exists($this, $method)) {
 109                         $this->$method();
 110                 }
 111
 112                 return $this->result;
 113         }
 114
 115
 116
 117
 118         /**
 119         * post-getID3() data handling for AAC files.
 120         *
 121         * @access   private
 122         */
 123
 124         function aacInfo() {
 125                 $this->result['format_name']     = 'AAC';
 126         }
 127
 128
 129
 130
 131         /**
 132         * post-getID3() data handling for Wave files.
 133         *
 134         * @access   private
 135         */
 136
 137         function riffInfo() {
 138                 if ($this->info['audio']['dataformat'] == 'wav') {
 139
 140                         $this->result['format_name'] = 'Wave';
 141
 142                 } elseif (preg_match('#^mp[1-3]$#', $this->info['audio']['dataformat'])) {
 143
 144                         $this->result['format_name'] = strtoupper($this->info['audio']['dataformat']);
 145
 146                 } else {
 147
 148                         $this->result['format_name'] = 'riff/'.$this->info['audio']['dataformat'];
 149
 150                 }
 151         }
 152
 153
 154
 155
 156         /**
 157         * * post-getID3() data handling for FLAC files.
 158         *
 159         * @access   private
 160         */
 161
 162         function flacInfo() {
 163                 $this->result['format_name']     = 'FLAC';
 164         }
 165
 166
 167
 168
 169
 170         /**
 171         * post-getID3() data handling for Monkey's Audio files.
 172         *
 173         * @access   private
 174         */
 175
 176         function macInfo() {
 177                 $this->result['format_name']     = 'Monkey\'s Audio';
 178         }
 179
 180
 181
 182
 183
 184         /**
 185         * post-getID3() data handling for Lossless Audio files.
 186         *
 187         * @access   private
 188         */
 189
 190         function laInfo() {
 191                 $this->result['format_name']     = 'La';
 192         }
 193
 194
 195
 196
 197
 198         /**
 199         * post-getID3() data handling for Ogg Vorbis files.
 200         *
 201         * @access   private
 202         */
 203
 204         function oggInfo() {
 205                 if ($this->info['audio']['dataformat'] == 'vorbis') {
 206
 207                         $this->result['format_name']     = 'Ogg Vorbis';
 208
 209                 } else if ($this->info['audio']['dataformat'] == 'flac') {
 210
 211                         $this->result['format_name'] = 'Ogg FLAC';
 212
 213                 } else if ($this->info['audio']['dataformat'] == 'speex') {
 214
 215                         $this->result['format_name'] = 'Ogg Speex';
 216
 217                 } else {
 218
 219                         $this->result['format_name'] = 'Ogg '.$this->info['audio']['dataformat'];
 220
 221                 }
 222         }
 223
 224
 225
 226
 227         /**
 228         * post-getID3() data handling for Musepack files.
 229         *
 230         * @access   private
 231         */
 232
 233         function mpcInfo() {
 234                 $this->result['format_name']     = 'Musepack';
 235         }
 236
 237
 238
 239
 240         /**
 241         * post-getID3() data handling for MPEG files.
 242         *
 243         * @access   private
 244         */
 245
 246         function mp3Info() {
 247                 $this->result['format_name']     = 'MP3';
 248         }
 249
 250
 251
 252
 253         /**
 254         * post-getID3() data handling for MPEG files.
 255         *
 256         * @access   private
 257         */
 258
 259         function mp2Info() {
 260                 $this->result['format_name']     = 'MP2';
 261         }
 262
 263
 264
 265
 266
 267         /**
 268         * post-getID3() data handling for MPEG files.
 269         *
 270         * @access   private
 271         */
 272
 273         function mp1Info() {
 274                 $this->result['format_name']     = 'MP1';
 275         }
 276
 277
 278
 279
 280         /**
 281         * post-getID3() data handling for WMA files.
 282         *
 283         * @access   private
 284         */
 285
 286         function asfInfo() {
 287                 $this->result['format_name']     = strtoupper($this->info['audio']['dataformat']);
 288         }
 289
 290
 291
 292         /**
 293         * post-getID3() data handling for Real files.
 294         *
 295         * @access   private
 296         */
 297
 298         function realInfo() {
 299                 $this->result['format_name']     = 'Real';
 300         }
 301
 302
 303
 304
 305
 306         /**
 307         * post-getID3() data handling for VQF files.
 308         *
 309         * @access   private
 310         */
 311
 312         function vqfInfo() {
 313                 $this->result['format_name']     = 'VQF';
 314         }
 315
 316 }