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/wp-includes/ID3/ -> module.audio-video.quicktime.php (source)

   1  <?php
   2  
   3  /////////////////////////////////////////////////////////////////
   4  /// getID3() by James Heinrich <info@getid3.org>               //
   5  //  available at https://github.com/JamesHeinrich/getID3       //
   6  //            or https://www.getid3.org                        //
   7  //            or http://getid3.sourceforge.net                 //
   8  //  see readme.txt for more details                            //
   9  /////////////////////////////////////////////////////////////////
  10  //                                                             //
  11  // module.audio-video.quicktime.php                            //
  12  // module for analyzing Quicktime and MP3-in-MP4 files         //
  13  // dependencies: module.audio.mp3.php                          //
  14  // dependencies: module.tag.id3v2.php                          //
  15  //                                                            ///
  16  /////////////////////////////////////////////////////////////////
  17  
  18  getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.mp3.php', __FILE__, true);
  19  getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v2.php', __FILE__, true); // needed for ISO 639-2 language code lookup
  20  
  21  class getid3_quicktime extends getid3_handler
  22  {
  23  
  24      public $ReturnAtomData        = true;
  25      public $ParseAllPossibleAtoms = false;
  26  
  27      /**
  28       * @return bool
  29       */
  30  	public function Analyze() {
  31          $info = &$this->getid3->info;
  32  
  33          $info['fileformat'] = 'quicktime';
  34          $info['quicktime']['hinting']    = false;
  35          $info['quicktime']['controller'] = 'standard'; // may be overridden if 'ctyp' atom is present
  36  
  37          $this->fseek($info['avdataoffset']);
  38  
  39          $offset      = 0;
  40          $atomcounter = 0;
  41          $atom_data_read_buffer_size = $info['php_memory_limit'] ? round($info['php_memory_limit'] / 4) : $this->getid3->option_fread_buffer_size * 1024; // set read buffer to 25% of PHP memory limit (if one is specified), otherwise use option_fread_buffer_size [default: 32MB]
  42          while ($offset < $info['avdataend']) {
  43              if (!getid3_lib::intValueSupported($offset)) {
  44                  $this->error('Unable to parse atom at offset '.$offset.' because beyond '.round(PHP_INT_MAX / 1073741824).'GB limit of PHP filesystem functions');
  45                  break;
  46              }
  47              $this->fseek($offset);
  48              $AtomHeader = $this->fread(8);
  49  
  50              $atomsize = getid3_lib::BigEndian2Int(substr($AtomHeader, 0, 4));
  51              $atomname = substr($AtomHeader, 4, 4);
  52  
  53              // 64-bit MOV patch by jlegateØktnc*com
  54              if ($atomsize == 1) {
  55                  $atomsize = getid3_lib::BigEndian2Int($this->fread(8));
  56              }
  57  
  58              $info['quicktime'][$atomname]['name']   = $atomname;
  59              $info['quicktime'][$atomname]['size']   = $atomsize;
  60              $info['quicktime'][$atomname]['offset'] = $offset;
  61  
  62              if (($offset + $atomsize) > $info['avdataend']) {
  63                  $this->error('Atom at offset '.$offset.' claims to go beyond end-of-file (length: '.$atomsize.' bytes)');
  64                  return false;
  65              }
  66  
  67              if ($atomsize == 0) {
  68                  // Furthermore, for historical reasons the list of atoms is optionally
  69                  // terminated by a 32-bit integer set to 0. If you are writing a program
  70                  // to read user data atoms, you should allow for the terminating 0.
  71                  break;
  72              }
  73              $atomHierarchy = array();
  74              $info['quicktime'][$atomname] = $this->QuicktimeParseAtom($atomname, $atomsize, $this->fread(min($atomsize, $atom_data_read_buffer_size)), $offset, $atomHierarchy, $this->ParseAllPossibleAtoms);
  75  
  76              $offset += $atomsize;
  77              $atomcounter++;
  78          }
  79  
  80          if (!empty($info['avdataend_tmp'])) {
  81              // this value is assigned to a temp value and then erased because
  82              // otherwise any atoms beyond the 'mdat' atom would not get parsed
  83              $info['avdataend'] = $info['avdataend_tmp'];
  84              unset($info['avdataend_tmp']);
  85          }
  86  
  87          if (!empty($info['quicktime']['comments']['chapters']) && is_array($info['quicktime']['comments']['chapters']) && (count($info['quicktime']['comments']['chapters']) > 0)) {
  88              $durations = $this->quicktime_time_to_sample_table($info);
  89              for ($i = 0; $i < count($info['quicktime']['comments']['chapters']); $i++) {
  90                  $bookmark = array();
  91                  $bookmark['title'] = $info['quicktime']['comments']['chapters'][$i];
  92                  if (isset($durations[$i])) {
  93                      $bookmark['duration_sample'] = $durations[$i]['sample_duration'];
  94                      if ($i > 0) {
  95                          $bookmark['start_sample'] = $info['quicktime']['bookmarks'][($i - 1)]['start_sample'] + $info['quicktime']['bookmarks'][($i - 1)]['duration_sample'];
  96                      } else {
  97                          $bookmark['start_sample'] = 0;
  98                      }
  99                      if ($time_scale = $this->quicktime_bookmark_time_scale($info)) {
 100                          $bookmark['duration_seconds'] = $bookmark['duration_sample'] / $time_scale;
 101                          $bookmark['start_seconds']    = $bookmark['start_sample']    / $time_scale;
 102                      }
 103                  }
 104                  $info['quicktime']['bookmarks'][] = $bookmark;
 105              }
 106          }
 107  
 108          if (isset($info['quicktime']['temp_meta_key_names'])) {
 109              unset($info['quicktime']['temp_meta_key_names']);
 110          }
 111  
 112          if (!empty($info['quicktime']['comments']['location.ISO6709'])) {
 113              // https://en.wikipedia.org/wiki/ISO_6709
 114              foreach ($info['quicktime']['comments']['location.ISO6709'] as $ISO6709string) {
 115                  $ISO6709parsed = array('latitude'=>false, 'longitude'=>false, 'altitude'=>false);
 116                  if (preg_match('#^([\\+\\-])([0-9]{2}|[0-9]{4}|[0-9]{6})(\\.[0-9]+)?([\\+\\-])([0-9]{3}|[0-9]{5}|[0-9]{7})(\\.[0-9]+)?(([\\+\\-])([0-9]{3}|[0-9]{5}|[0-9]{7})(\\.[0-9]+)?)?/$#', $ISO6709string, $matches)) {
 117                      @list($dummy, $lat_sign, $lat_deg, $lat_deg_dec, $lon_sign, $lon_deg, $lon_deg_dec, $dummy, $alt_sign, $alt_deg, $alt_deg_dec) = $matches;
 118  
 119                      if (strlen($lat_deg) == 2) {        // [+-]DD.D
 120                          $ISO6709parsed['latitude'] = (($lat_sign == '-') ? -1 : 1) * floatval(ltrim($lat_deg, '0').$lat_deg_dec);
 121                      } elseif (strlen($lat_deg) == 4) {  // [+-]DDMM.M
 122                          $ISO6709parsed['latitude'] = (($lat_sign == '-') ? -1 : 1) * floatval(ltrim(substr($lat_deg, 0, 2), '0')) + floatval(ltrim(substr($lat_deg, 2, 2), '0').$lat_deg_dec / 60);
 123                      } elseif (strlen($lat_deg) == 6) {  // [+-]DDMMSS.S
 124                          $ISO6709parsed['latitude'] = (($lat_sign == '-') ? -1 : 1) * floatval(ltrim(substr($lat_deg, 0, 2), '0')) + floatval(ltrim(substr($lat_deg, 2, 2), '0') / 60) + floatval(ltrim(substr($lat_deg, 4, 2), '0').$lat_deg_dec / 3600);
 125                      }
 126  
 127                      if (strlen($lon_deg) == 3) {        // [+-]DDD.D
 128                          $ISO6709parsed['longitude'] = (($lon_sign == '-') ? -1 : 1) * floatval(ltrim($lon_deg, '0').$lon_deg_dec);
 129                      } elseif (strlen($lon_deg) == 5) {  // [+-]DDDMM.M
 130                          $ISO6709parsed['longitude'] = (($lon_sign == '-') ? -1 : 1) * floatval(ltrim(substr($lon_deg, 0, 2), '0')) + floatval(ltrim(substr($lon_deg, 2, 2), '0').$lon_deg_dec / 60);
 131                      } elseif (strlen($lon_deg) == 7) {  // [+-]DDDMMSS.S
 132                          $ISO6709parsed['longitude'] = (($lon_sign == '-') ? -1 : 1) * floatval(ltrim(substr($lon_deg, 0, 2), '0')) + floatval(ltrim(substr($lon_deg, 2, 2), '0') / 60) + floatval(ltrim(substr($lon_deg, 4, 2), '0').$lon_deg_dec / 3600);
 133                      }
 134  
 135                      if (strlen($alt_deg) == 3) {        // [+-]DDD.D
 136                          $ISO6709parsed['altitude'] = (($alt_sign == '-') ? -1 : 1) * floatval(ltrim($alt_deg, '0').$alt_deg_dec);
 137                      } elseif (strlen($alt_deg) == 5) {  // [+-]DDDMM.M
 138                          $ISO6709parsed['altitude'] = (($alt_sign == '-') ? -1 : 1) * floatval(ltrim(substr($alt_deg, 0, 2), '0')) + floatval(ltrim(substr($alt_deg, 2, 2), '0').$alt_deg_dec / 60);
 139                      } elseif (strlen($alt_deg) == 7) {  // [+-]DDDMMSS.S
 140                          $ISO6709parsed['altitude'] = (($alt_sign == '-') ? -1 : 1) * floatval(ltrim(substr($alt_deg, 0, 2), '0')) + floatval(ltrim(substr($alt_deg, 2, 2), '0') / 60) + floatval(ltrim(substr($alt_deg, 4, 2), '0').$alt_deg_dec / 3600);
 141                      }
 142  
 143                      foreach (array('latitude', 'longitude', 'altitude') as $key) {
 144                          if ($ISO6709parsed[$key] !== false) {
 145                              $value = (($lat_sign == '-') ? -1 : 1) * floatval($ISO6709parsed[$key]);
 146                              if (!in_array($value, $info['quicktime']['comments']['gps_'.$key])) {
 147                                  $info['quicktime']['comments']['gps_'.$key][]  = (($lat_sign == '-') ? -1 : 1) * floatval($ISO6709parsed[$key]);
 148                              }
 149                          }
 150                      }
 151                  }
 152                  if ($ISO6709parsed['latitude'] === false) {
 153                      $this->warning('location.ISO6709 string not parsed correctly: "'.$ISO6709string.'", please submit as a bug');
 154                  }
 155                  break;
 156              }
 157          }
 158  
 159          if (!isset($info['bitrate']) && isset($info['playtime_seconds'])) {
 160              $info['bitrate'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / $info['playtime_seconds'];
 161          }
 162          if (isset($info['bitrate']) && !isset($info['audio']['bitrate']) && !isset($info['quicktime']['video'])) {
 163              $info['audio']['bitrate'] = $info['bitrate'];
 164          }
 165          if (!empty($info['bitrate']) && !empty($info['audio']['bitrate']) && empty($info['video']['bitrate']) && !empty($info['video']['frame_rate']) && !empty($info['video']['resolution_x']) && ($info['bitrate'] > $info['audio']['bitrate'])) {
 166              $info['video']['bitrate'] = $info['bitrate'] - $info['audio']['bitrate'];
 167          }
 168          if (!empty($info['playtime_seconds']) && !isset($info['video']['frame_rate']) && !empty($info['quicktime']['stts_framecount'])) {
 169              foreach ($info['quicktime']['stts_framecount'] as $key => $samples_count) {
 170                  $samples_per_second = $samples_count / $info['playtime_seconds'];
 171                  if ($samples_per_second > 240) {
 172                      // has to be audio samples
 173                  } else {
 174                      $info['video']['frame_rate'] = $samples_per_second;
 175                      break;
 176                  }
 177              }
 178          }
 179          if ($info['audio']['dataformat'] == 'mp4') {
 180              $info['fileformat'] = 'mp4';
 181              if (empty($info['video']['resolution_x'])) {
 182                  $info['mime_type']  = 'audio/mp4';
 183                  unset($info['video']['dataformat']);
 184              } else {
 185                  $info['mime_type']  = 'video/mp4';
 186              }
 187          }
 188  
 189          if (!$this->ReturnAtomData) {
 190              unset($info['quicktime']['moov']);
 191          }
 192  
 193          if (empty($info['audio']['dataformat']) && !empty($info['quicktime']['audio'])) {
 194              $info['audio']['dataformat'] = 'quicktime';
 195          }
 196          if (empty($info['video']['dataformat']) && !empty($info['quicktime']['video'])) {
 197              $info['video']['dataformat'] = 'quicktime';
 198          }
 199          if (isset($info['video']) && ($info['mime_type'] == 'audio/mp4') && empty($info['video']['resolution_x']) && empty($info['video']['resolution_y']))  {
 200              unset($info['video']);
 201          }
 202  
 203          return true;
 204      }
 205  
 206      /**
 207       * @param string $atomname
 208       * @param int    $atomsize
 209       * @param string $atom_data
 210       * @param int    $baseoffset
 211       * @param array  $atomHierarchy
 212       * @param bool   $ParseAllPossibleAtoms
 213       *
 214       * @return array|false
 215       */
 216  	public function QuicktimeParseAtom($atomname, $atomsize, $atom_data, $baseoffset, &$atomHierarchy, $ParseAllPossibleAtoms) {
 217          // http://developer.apple.com/techpubs/quicktime/qtdevdocs/APIREF/INDEX/atomalphaindex.htm
 218          // https://code.google.com/p/mp4v2/wiki/iTunesMetadata
 219  
 220          $info = &$this->getid3->info;
 221  
 222          $atom_parent = end($atomHierarchy); // not array_pop($atomHierarchy); see https://www.getid3.org/phpBB3/viewtopic.php?t=1717
 223          array_push($atomHierarchy, $atomname);
 224          $atom_structure              = array();
 225          $atom_structure['hierarchy'] = implode(' ', $atomHierarchy);
 226          $atom_structure['name']      = $atomname;
 227          $atom_structure['size']      = $atomsize;
 228          $atom_structure['offset']    = $baseoffset;
 229          if (substr($atomname, 0, 3) == "\x00\x00\x00") {
 230              // https://github.com/JamesHeinrich/getID3/issues/139
 231              $atomname = getid3_lib::BigEndian2Int($atomname);
 232              $atom_structure['name'] = $atomname;
 233              $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
 234          } else {
 235              switch ($atomname) {
 236                  case 'moov': // MOVie container atom
 237                  case 'trak': // TRAcK container atom
 238                  case 'clip': // CLIPping container atom
 239                  case 'matt': // track MATTe container atom
 240                  case 'edts': // EDiTS container atom
 241                  case 'tref': // Track REFerence container atom
 242                  case 'mdia': // MeDIA container atom
 243                  case 'minf': // Media INFormation container atom
 244                  case 'dinf': // Data INFormation container atom
 245                  case 'nmhd': // Null Media HeaDer container atom
 246                  case 'udta': // User DaTA container atom
 247                  case 'cmov': // Compressed MOVie container atom
 248                  case 'rmra': // Reference Movie Record Atom
 249                  case 'rmda': // Reference Movie Descriptor Atom
 250                  case 'gmhd': // Generic Media info HeaDer atom (seen on QTVR)
 251                      $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
 252                      break;
 253  
 254                  case 'ilst': // Item LiST container atom
 255                      if ($atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms)) {
 256                          // some "ilst" atoms contain data atoms that have a numeric name, and the data is far more accessible if the returned array is compacted
 257                          $allnumericnames = true;
 258                          foreach ($atom_structure['subatoms'] as $subatomarray) {
 259                              if (!is_integer($subatomarray['name']) || (count($subatomarray['subatoms']) != 1)) {
 260                                  $allnumericnames = false;
 261                                  break;
 262                              }
 263                          }
 264                          if ($allnumericnames) {
 265                              $newData = array();
 266                              foreach ($atom_structure['subatoms'] as $subatomarray) {
 267                                  foreach ($subatomarray['subatoms'] as $newData_subatomarray) {
 268                                      unset($newData_subatomarray['hierarchy'], $newData_subatomarray['name']);
 269                                      $newData[$subatomarray['name']] = $newData_subatomarray;
 270                                      break;
 271                                  }
 272                              }
 273                              $atom_structure['data'] = $newData;
 274                              unset($atom_structure['subatoms']);
 275                          }
 276                      }
 277                      break;
 278  
 279                  case 'stbl': // Sample TaBLe container atom
 280                      $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
 281                      $isVideo = false;
 282                      $framerate  = 0;
 283                      $framecount = 0;
 284                      foreach ($atom_structure['subatoms'] as $key => $value_array) {
 285                          if (isset($value_array['sample_description_table'])) {
 286                              foreach ($value_array['sample_description_table'] as $key2 => $value_array2) {
 287                                  if (isset($value_array2['data_format'])) {
 288                                      switch ($value_array2['data_format']) {
 289                                          case 'avc1':
 290                                          case 'mp4v':
 291                                              // video data
 292                                              $isVideo = true;
 293                                              break;
 294                                          case 'mp4a':
 295                                              // audio data
 296                                              break;
 297                                      }
 298                                  }
 299                              }
 300                          } elseif (isset($value_array['time_to_sample_table'])) {
 301                              foreach ($value_array['time_to_sample_table'] as $key2 => $value_array2) {
 302                                  if (isset($value_array2['sample_count']) && isset($value_array2['sample_duration']) && ($value_array2['sample_duration'] > 0)) {
 303                                      $framerate  = round($info['quicktime']['time_scale'] / $value_array2['sample_duration'], 3);
 304                                      $framecount = $value_array2['sample_count'];
 305                                  }
 306                              }
 307                          }
 308                      }
 309                      if ($isVideo && $framerate) {
 310                          $info['quicktime']['video']['frame_rate'] = $framerate;
 311                          $info['video']['frame_rate'] = $info['quicktime']['video']['frame_rate'];
 312                      }
 313                      if ($isVideo && $framecount) {
 314                          $info['quicktime']['video']['frame_count'] = $framecount;
 315                      }
 316                      break;
 317  
 318  
 319                  case "\xA9".'alb': // ALBum
 320                  case "\xA9".'ART': //
 321                  case "\xA9".'art': // ARTist
 322                  case "\xA9".'aut': //
 323                  case "\xA9".'cmt': // CoMmenT
 324                  case "\xA9".'com': // COMposer
 325                  case "\xA9".'cpy': //
 326                  case "\xA9".'day': // content created year
 327                  case "\xA9".'dir': //
 328                  case "\xA9".'ed1': //
 329                  case "\xA9".'ed2': //
 330                  case "\xA9".'ed3': //
 331                  case "\xA9".'ed4': //
 332                  case "\xA9".'ed5': //
 333                  case "\xA9".'ed6': //
 334                  case "\xA9".'ed7': //
 335                  case "\xA9".'ed8': //
 336                  case "\xA9".'ed9': //
 337                  case "\xA9".'enc': //
 338                  case "\xA9".'fmt': //
 339                  case "\xA9".'gen': // GENre
 340                  case "\xA9".'grp': // GRouPing
 341                  case "\xA9".'hst': //
 342                  case "\xA9".'inf': //
 343                  case "\xA9".'lyr': // LYRics
 344                  case "\xA9".'mak': //
 345                  case "\xA9".'mod': //
 346                  case "\xA9".'nam': // full NAMe
 347                  case "\xA9".'ope': //
 348                  case "\xA9".'PRD': //
 349                  case "\xA9".'prf': //
 350                  case "\xA9".'req': //
 351                  case "\xA9".'src': //
 352                  case "\xA9".'swr': //
 353                  case "\xA9".'too': // encoder
 354                  case "\xA9".'trk': // TRacK
 355                  case "\xA9".'url': //
 356                  case "\xA9".'wrn': //
 357                  case "\xA9".'wrt': // WRiTer
 358                  case '----': // itunes specific
 359                  case 'aART': // Album ARTist
 360                  case 'akID': // iTunes store account type
 361                  case 'apID': // Purchase Account
 362                  case 'atID': //
 363                  case 'catg': // CaTeGory
 364                  case 'cmID': //
 365                  case 'cnID': //
 366                  case 'covr': // COVeR artwork
 367                  case 'cpil': // ComPILation
 368                  case 'cprt': // CoPyRighT
 369                  case 'desc': // DESCription
 370                  case 'disk': // DISK number
 371                  case 'egid': // Episode Global ID
 372                  case 'geID': //
 373                  case 'gnre': // GeNRE
 374                  case 'hdvd': // HD ViDeo
 375                  case 'keyw': // KEYWord
 376                  case 'ldes': // Long DEScription
 377                  case 'pcst': // PodCaST
 378                  case 'pgap': // GAPless Playback
 379                  case 'plID': //
 380                  case 'purd': // PURchase Date
 381                  case 'purl': // Podcast URL
 382                  case 'rati': //
 383                  case 'rndu': //
 384                  case 'rpdu': //
 385                  case 'rtng': // RaTiNG
 386                  case 'sfID': // iTunes store country
 387                  case 'soaa': // SOrt Album Artist
 388                  case 'soal': // SOrt ALbum
 389                  case 'soar': // SOrt ARtist
 390                  case 'soco': // SOrt COmposer
 391                  case 'sonm': // SOrt NaMe
 392                  case 'sosn': // SOrt Show Name
 393                  case 'stik': //
 394                  case 'tmpo': // TeMPO (BPM)
 395                  case 'trkn': // TRacK Number
 396                  case 'tven': // tvEpisodeID
 397                  case 'tves': // TV EpiSode
 398                  case 'tvnn': // TV Network Name
 399                  case 'tvsh': // TV SHow Name
 400                  case 'tvsn': // TV SeasoN
 401                      if ($atom_parent == 'udta') {
 402                          // User data atom handler
 403                          $atom_structure['data_length'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2));
 404                          $atom_structure['language_id'] = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2));
 405                          $atom_structure['data']        =                           substr($atom_data, 4);
 406  
 407                          $atom_structure['language']    = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
 408                          if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
 409                              $info['comments']['language'][] = $atom_structure['language'];
 410                          }
 411                      } else {
 412                          // Apple item list box atom handler
 413                          $atomoffset = 0;
 414                          if (substr($atom_data, 2, 2) == "\x10\xB5") {
 415                              // not sure what it means, but observed on iPhone4 data.
 416                              // Each $atom_data has 2 bytes of datasize, plus 0x10B5, then data
 417                              while ($atomoffset < strlen($atom_data)) {
 418                                  $boxsmallsize = getid3_lib::BigEndian2Int(substr($atom_data, $atomoffset,     2));
 419                                  $boxsmalltype =                           substr($atom_data, $atomoffset + 2, 2);
 420                                  $boxsmalldata =                           substr($atom_data, $atomoffset + 4, $boxsmallsize);
 421                                  if ($boxsmallsize <= 1) {
 422                                      $this->warning('Invalid QuickTime atom smallbox size "'.$boxsmallsize.'" in atom "'.preg_replace('#[^a-zA-Z0-9 _\\-]#', '?', $atomname).'" at offset: '.($atom_structure['offset'] + $atomoffset));
 423                                      $atom_structure['data'] = null;
 424                                      $atomoffset = strlen($atom_data);
 425                                      break;
 426                                  }
 427                                  switch ($boxsmalltype) {
 428                                      case "\x10\xB5":
 429                                          $atom_structure['data'] = $boxsmalldata;
 430                                          break;
 431                                      default:
 432                                          $this->warning('Unknown QuickTime smallbox type: "'.preg_replace('#[^a-zA-Z0-9 _\\-]#', '?', $boxsmalltype).'" ('.trim(getid3_lib::PrintHexBytes($boxsmalltype)).') at offset '.$baseoffset);
 433                                          $atom_structure['data'] = $atom_data;
 434                                          break;
 435                                  }
 436                                  $atomoffset += (4 + $boxsmallsize);
 437                              }
 438                          } else {
 439                              while ($atomoffset < strlen($atom_data)) {
 440                                  $boxsize = getid3_lib::BigEndian2Int(substr($atom_data, $atomoffset, 4));
 441                                  $boxtype =                           substr($atom_data, $atomoffset + 4, 4);
 442                                  $boxdata =                           substr($atom_data, $atomoffset + 8, $boxsize - 8);
 443                                  if ($boxsize <= 1) {
 444                                      $this->warning('Invalid QuickTime atom box size "'.$boxsize.'" in atom "'.preg_replace('#[^a-zA-Z0-9 _\\-]#', '?', $atomname).'" at offset: '.($atom_structure['offset'] + $atomoffset));
 445                                      $atom_structure['data'] = null;
 446                                      $atomoffset = strlen($atom_data);
 447                                      break;
 448                                  }
 449                                  $atomoffset += $boxsize;
 450  
 451                                  switch ($boxtype) {
 452                                      case 'mean':
 453                                      case 'name':
 454                                          $atom_structure[$boxtype] = substr($boxdata, 4);
 455                                          break;
 456  
 457                                      case 'data':
 458                                          $atom_structure['version']   = getid3_lib::BigEndian2Int(substr($boxdata,  0, 1));
 459                                          $atom_structure['flags_raw'] = getid3_lib::BigEndian2Int(substr($boxdata,  1, 3));
 460                                          switch ($atom_structure['flags_raw']) {
 461                                              case  0: // data flag
 462                                              case 21: // tmpo/cpil flag
 463                                                  switch ($atomname) {
 464                                                      case 'cpil':
 465                                                      case 'hdvd':
 466                                                      case 'pcst':
 467                                                      case 'pgap':
 468                                                          // 8-bit integer (boolean)
 469                                                          $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 1));
 470                                                          break;
 471  
 472                                                      case 'tmpo':
 473                                                          // 16-bit integer
 474                                                          $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 2));
 475                                                          break;
 476  
 477                                                      case 'disk':
 478                                                      case 'trkn':
 479                                                          // binary
 480                                                          $num       = getid3_lib::BigEndian2Int(substr($boxdata, 10, 2));
 481                                                          $num_total = getid3_lib::BigEndian2Int(substr($boxdata, 12, 2));
 482                                                          $atom_structure['data']  = empty($num) ? '' : $num;
 483                                                          $atom_structure['data'] .= empty($num_total) ? '' : '/'.$num_total;
 484                                                          break;
 485  
 486                                                      case 'gnre':
 487                                                          // enum
 488                                                          $GenreID = getid3_lib::BigEndian2Int(substr($boxdata, 8, 4));
 489                                                          $atom_structure['data']    = getid3_id3v1::LookupGenreName($GenreID - 1);
 490                                                          break;
 491  
 492                                                      case 'rtng':
 493                                                          // 8-bit integer
 494                                                          $atom_structure[$atomname] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 1));
 495                                                          $atom_structure['data']    = $this->QuicktimeContentRatingLookup($atom_structure[$atomname]);
 496                                                          break;
 497  
 498                                                      case 'stik':
 499                                                          // 8-bit integer (enum)
 500                                                          $atom_structure[$atomname] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 1));
 501                                                          $atom_structure['data']    = $this->QuicktimeSTIKLookup($atom_structure[$atomname]);
 502                                                          break;
 503  
 504                                                      case 'sfID':
 505                                                          // 32-bit integer
 506                                                          $atom_structure[$atomname] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 4));
 507                                                          $atom_structure['data']    = $this->QuicktimeStoreFrontCodeLookup($atom_structure[$atomname]);
 508                                                          break;
 509  
 510                                                      case 'egid':
 511                                                      case 'purl':
 512                                                          $atom_structure['data'] = substr($boxdata, 8);
 513                                                          break;
 514  
 515                                                      case 'plID':
 516                                                          // 64-bit integer
 517                                                          $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 8));
 518                                                          break;
 519  
 520                                                      case 'covr':
 521                                                          $atom_structure['data'] = substr($boxdata, 8);
 522                                                          // not a foolproof check, but better than nothing
 523                                                          if (preg_match('#^\\xFF\\xD8\\xFF#', $atom_structure['data'])) {
 524                                                              $atom_structure['image_mime'] = 'image/jpeg';
 525                                                          } elseif (preg_match('#^\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A#', $atom_structure['data'])) {
 526                                                              $atom_structure['image_mime'] = 'image/png';
 527                                                          } elseif (preg_match('#^GIF#', $atom_structure['data'])) {
 528                                                              $atom_structure['image_mime'] = 'image/gif';
 529                                                          }
 530                                                          break;
 531  
 532                                                      case 'atID':
 533                                                      case 'cnID':
 534                                                      case 'geID':
 535                                                      case 'tves':
 536                                                      case 'tvsn':
 537                                                      default:
 538                                                          // 32-bit integer
 539                                                          $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($boxdata, 8, 4));
 540                                                  }
 541                                                  break;
 542  
 543                                              case  1: // text flag
 544                                              case 13: // image flag
 545                                              default:
 546                                                  $atom_structure['data'] = substr($boxdata, 8);
 547                                                  if ($atomname == 'covr') {
 548                                                      // not a foolproof check, but better than nothing
 549                                                      if (preg_match('#^\\xFF\\xD8\\xFF#', $atom_structure['data'])) {
 550                                                          $atom_structure['image_mime'] = 'image/jpeg';
 551                                                      } elseif (preg_match('#^\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A#', $atom_structure['data'])) {
 552                                                          $atom_structure['image_mime'] = 'image/png';
 553                                                      } elseif (preg_match('#^GIF#', $atom_structure['data'])) {
 554                                                          $atom_structure['image_mime'] = 'image/gif';
 555                                                      }
 556                                                  }
 557                                                  break;
 558  
 559                                          }
 560                                          break;
 561  
 562                                      default:
 563                                          $this->warning('Unknown QuickTime box type: "'.preg_replace('#[^a-zA-Z0-9 _\\-]#', '?', $boxtype).'" ('.trim(getid3_lib::PrintHexBytes($boxtype)).') at offset '.$baseoffset);
 564                                          $atom_structure['data'] = $atom_data;
 565  
 566                                  }
 567                              }
 568                          }
 569                      }
 570                      $this->CopyToAppropriateCommentsSection($atomname, $atom_structure['data'], $atom_structure['name']);
 571                      break;
 572  
 573  
 574                  case 'play': // auto-PLAY atom
 575                      $atom_structure['autoplay'] = (bool) getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 576  
 577                      $info['quicktime']['autoplay'] = $atom_structure['autoplay'];
 578                      break;
 579  
 580  
 581                  case 'WLOC': // Window LOCation atom
 582                      $atom_structure['location_x']  = getid3_lib::BigEndian2Int(substr($atom_data,  0, 2));
 583                      $atom_structure['location_y']  = getid3_lib::BigEndian2Int(substr($atom_data,  2, 2));
 584                      break;
 585  
 586  
 587                  case 'LOOP': // LOOPing atom
 588                  case 'SelO': // play SELection Only atom
 589                  case 'AllF': // play ALL Frames atom
 590                      $atom_structure['data'] = getid3_lib::BigEndian2Int($atom_data);
 591                      break;
 592  
 593  
 594                  case 'name': //
 595                  case 'MCPS': // Media Cleaner PRo
 596                  case '@PRM': // adobe PReMiere version
 597                  case '@PRQ': // adobe PRemiere Quicktime version
 598                      $atom_structure['data'] = $atom_data;
 599                      break;
 600  
 601  
 602                  case 'cmvd': // Compressed MooV Data atom
 603                      // Code by ubergeekØubergeek*tv based on information from
 604                      // http://developer.apple.com/quicktime/icefloe/dispatch012.html
 605                      $atom_structure['unCompressedSize'] = getid3_lib::BigEndian2Int(substr($atom_data, 0, 4));
 606  
 607                      $CompressedFileData = substr($atom_data, 4);
 608                      if ($UncompressedHeader = @gzuncompress($CompressedFileData)) {
 609                          $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($UncompressedHeader, 0, $atomHierarchy, $ParseAllPossibleAtoms);
 610                      } else {
 611                          $this->warning('Error decompressing compressed MOV atom at offset '.$atom_structure['offset']);
 612                      }
 613                      break;
 614  
 615  
 616                  case 'dcom': // Data COMpression atom
 617                      $atom_structure['compression_id']   = $atom_data;
 618                      $atom_structure['compression_text'] = $this->QuicktimeDCOMLookup($atom_data);
 619                      break;
 620  
 621  
 622                  case 'rdrf': // Reference movie Data ReFerence atom
 623                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 624                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3));
 625                      $atom_structure['flags']['internal_data'] = (bool) ($atom_structure['flags_raw'] & 0x000001);
 626  
 627                      $atom_structure['reference_type_name']    =                           substr($atom_data,  4, 4);
 628                      $atom_structure['reference_length']       = getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
 629                      switch ($atom_structure['reference_type_name']) {
 630                          case 'url ':
 631                              $atom_structure['url']            =       $this->NoNullString(substr($atom_data, 12));
 632                              break;
 633  
 634                          case 'alis':
 635                              $atom_structure['file_alias']     =                           substr($atom_data, 12);
 636                              break;
 637  
 638                          case 'rsrc':
 639                              $atom_structure['resource_alias'] =                           substr($atom_data, 12);
 640                              break;
 641  
 642                          default:
 643                              $atom_structure['data']           =                           substr($atom_data, 12);
 644                              break;
 645                      }
 646                      break;
 647  
 648  
 649                  case 'rmqu': // Reference Movie QUality atom
 650                      $atom_structure['movie_quality'] = getid3_lib::BigEndian2Int($atom_data);
 651                      break;
 652  
 653  
 654                  case 'rmcs': // Reference Movie Cpu Speed atom
 655                      $atom_structure['version']          = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 656                      $atom_structure['flags_raw']        = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 657                      $atom_structure['cpu_speed_rating'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2));
 658                      break;
 659  
 660  
 661                  case 'rmvc': // Reference Movie Version Check atom
 662                      $atom_structure['version']            = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 663                      $atom_structure['flags_raw']          = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 664                      $atom_structure['gestalt_selector']   =                           substr($atom_data,  4, 4);
 665                      $atom_structure['gestalt_value_mask'] = getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
 666                      $atom_structure['gestalt_value']      = getid3_lib::BigEndian2Int(substr($atom_data, 12, 4));
 667                      $atom_structure['gestalt_check_type'] = getid3_lib::BigEndian2Int(substr($atom_data, 14, 2));
 668                      break;
 669  
 670  
 671                  case 'rmcd': // Reference Movie Component check atom
 672                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 673                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 674                      $atom_structure['component_type']         =                           substr($atom_data,  4, 4);
 675                      $atom_structure['component_subtype']      =                           substr($atom_data,  8, 4);
 676                      $atom_structure['component_manufacturer'] =                           substr($atom_data, 12, 4);
 677                      $atom_structure['component_flags_raw']    = getid3_lib::BigEndian2Int(substr($atom_data, 16, 4));
 678                      $atom_structure['component_flags_mask']   = getid3_lib::BigEndian2Int(substr($atom_data, 20, 4));
 679                      $atom_structure['component_min_version']  = getid3_lib::BigEndian2Int(substr($atom_data, 24, 4));
 680                      break;
 681  
 682  
 683                  case 'rmdr': // Reference Movie Data Rate atom
 684                      $atom_structure['version']       = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 685                      $atom_structure['flags_raw']     = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 686                      $atom_structure['data_rate']     = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
 687  
 688                      $atom_structure['data_rate_bps'] = $atom_structure['data_rate'] * 10;
 689                      break;
 690  
 691  
 692                  case 'rmla': // Reference Movie Language Atom
 693                      $atom_structure['version']     = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 694                      $atom_structure['flags_raw']   = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 695                      $atom_structure['language_id'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2));
 696  
 697                      $atom_structure['language']    = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
 698                      if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
 699                          $info['comments']['language'][] = $atom_structure['language'];
 700                      }
 701                      break;
 702  
 703  
 704                  case 'ptv ': // Print To Video - defines a movie's full screen mode
 705                      // http://developer.apple.com/documentation/QuickTime/APIREF/SOURCESIV/at_ptv-_pg.htm
 706                      $atom_structure['display_size_raw']  = getid3_lib::BigEndian2Int(substr($atom_data, 0, 2));
 707                      $atom_structure['reserved_1']        = getid3_lib::BigEndian2Int(substr($atom_data, 2, 2)); // hardcoded: 0x0000
 708                      $atom_structure['reserved_2']        = getid3_lib::BigEndian2Int(substr($atom_data, 4, 2)); // hardcoded: 0x0000
 709                      $atom_structure['slide_show_flag']   = getid3_lib::BigEndian2Int(substr($atom_data, 6, 1));
 710                      $atom_structure['play_on_open_flag'] = getid3_lib::BigEndian2Int(substr($atom_data, 7, 1));
 711  
 712                      $atom_structure['flags']['play_on_open'] = (bool) $atom_structure['play_on_open_flag'];
 713                      $atom_structure['flags']['slide_show']   = (bool) $atom_structure['slide_show_flag'];
 714  
 715                      $ptv_lookup[0] = 'normal';
 716                      $ptv_lookup[1] = 'double';
 717                      $ptv_lookup[2] = 'half';
 718                      $ptv_lookup[3] = 'full';
 719                      $ptv_lookup[4] = 'current';
 720                      if (isset($ptv_lookup[$atom_structure['display_size_raw']])) {
 721                          $atom_structure['display_size'] = $ptv_lookup[$atom_structure['display_size_raw']];
 722                      } else {
 723                          $this->warning('unknown "ptv " display constant ('.$atom_structure['display_size_raw'].')');
 724                      }
 725                      break;
 726  
 727  
 728                  case 'stsd': // Sample Table Sample Description atom
 729                      $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 730                      $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 731                      $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
 732  
 733                      // see: https://github.com/JamesHeinrich/getID3/issues/111
 734                      // Some corrupt files have been known to have high bits set in the number_entries field
 735                      // This field shouldn't really need to be 32-bits, values stores are likely in the range 1-100000
 736                      // Workaround: mask off the upper byte and throw a warning if it's nonzero
 737                      if ($atom_structure['number_entries'] > 0x000FFFFF) {
 738                          if ($atom_structure['number_entries'] > 0x00FFFFFF) {
 739                              $this->warning('"stsd" atom contains improbably large number_entries (0x'.getid3_lib::PrintHexBytes(substr($atom_data, 4, 4), true, false).' = '.$atom_structure['number_entries'].'), probably in error. Ignoring upper byte and interpreting this as 0x'.getid3_lib::PrintHexBytes(substr($atom_data, 5, 3), true, false).' = '.($atom_structure['number_entries'] & 0x00FFFFFF));
 740                              $atom_structure['number_entries'] = ($atom_structure['number_entries'] & 0x00FFFFFF);
 741                          } else {
 742                              $this->warning('"stsd" atom contains improbably large number_entries (0x'.getid3_lib::PrintHexBytes(substr($atom_data, 4, 4), true, false).' = '.$atom_structure['number_entries'].'), probably in error. Please report this to info@getid3.org referencing bug report #111');
 743                          }
 744                      }
 745  
 746                      $stsdEntriesDataOffset = 8;
 747                      for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
 748                          $atom_structure['sample_description_table'][$i]['size']             = getid3_lib::BigEndian2Int(substr($atom_data, $stsdEntriesDataOffset, 4));
 749                          $stsdEntriesDataOffset += 4;
 750                          $atom_structure['sample_description_table'][$i]['data_format']      =                           substr($atom_data, $stsdEntriesDataOffset, 4);
 751                          $stsdEntriesDataOffset += 4;
 752                          $atom_structure['sample_description_table'][$i]['reserved']         = getid3_lib::BigEndian2Int(substr($atom_data, $stsdEntriesDataOffset, 6));
 753                          $stsdEntriesDataOffset += 6;
 754                          $atom_structure['sample_description_table'][$i]['reference_index']  = getid3_lib::BigEndian2Int(substr($atom_data, $stsdEntriesDataOffset, 2));
 755                          $stsdEntriesDataOffset += 2;
 756                          $atom_structure['sample_description_table'][$i]['data']             =                           substr($atom_data, $stsdEntriesDataOffset, ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2));
 757                          $stsdEntriesDataOffset += ($atom_structure['sample_description_table'][$i]['size'] - 4 - 4 - 6 - 2);
 758  
 759                          $atom_structure['sample_description_table'][$i]['encoder_version']  = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'],  0, 2));
 760                          $atom_structure['sample_description_table'][$i]['encoder_revision'] = getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'],  2, 2));
 761                          $atom_structure['sample_description_table'][$i]['encoder_vendor']   =                           substr($atom_structure['sample_description_table'][$i]['data'],  4, 4);
 762  
 763                          switch ($atom_structure['sample_description_table'][$i]['encoder_vendor']) {
 764  
 765                              case "\x00\x00\x00\x00":
 766                                  // audio tracks
 767                                  $atom_structure['sample_description_table'][$i]['audio_channels']       =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'],  8,  2));
 768                                  $atom_structure['sample_description_table'][$i]['audio_bit_depth']      =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 10,  2));
 769                                  $atom_structure['sample_description_table'][$i]['audio_compression_id'] =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 12,  2));
 770                                  $atom_structure['sample_description_table'][$i]['audio_packet_size']    =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 14,  2));
 771                                  $atom_structure['sample_description_table'][$i]['audio_sample_rate']    = getid3_lib::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 16,  4));
 772  
 773                                  // video tracks
 774                                  // http://developer.apple.com/library/mac/#documentation/QuickTime/QTFF/QTFFChap3/qtff3.html
 775                                  $atom_structure['sample_description_table'][$i]['temporal_quality'] =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'],  8,  4));
 776                                  $atom_structure['sample_description_table'][$i]['spatial_quality']  =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 12,  4));
 777                                  $atom_structure['sample_description_table'][$i]['width']            =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 16,  2));
 778                                  $atom_structure['sample_description_table'][$i]['height']           =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 18,  2));
 779                                  $atom_structure['sample_description_table'][$i]['resolution_x']     = getid3_lib::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 24,  4));
 780                                  $atom_structure['sample_description_table'][$i]['resolution_y']     = getid3_lib::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 28,  4));
 781                                  $atom_structure['sample_description_table'][$i]['data_size']        =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 32,  4));
 782                                  $atom_structure['sample_description_table'][$i]['frame_count']      =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 36,  2));
 783                                  $atom_structure['sample_description_table'][$i]['compressor_name']  =                             substr($atom_structure['sample_description_table'][$i]['data'], 38,  4);
 784                                  $atom_structure['sample_description_table'][$i]['pixel_depth']      =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 42,  2));
 785                                  $atom_structure['sample_description_table'][$i]['color_table_id']   =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 44,  2));
 786  
 787                                  switch ($atom_structure['sample_description_table'][$i]['data_format']) {
 788                                      case '2vuY':
 789                                      case 'avc1':
 790                                      case 'cvid':
 791                                      case 'dvc ':
 792                                      case 'dvcp':
 793                                      case 'gif ':
 794                                      case 'h263':
 795                                      case 'jpeg':
 796                                      case 'kpcd':
 797                                      case 'mjpa':
 798                                      case 'mjpb':
 799                                      case 'mp4v':
 800                                      case 'png ':
 801                                      case 'raw ':
 802                                      case 'rle ':
 803                                      case 'rpza':
 804                                      case 'smc ':
 805                                      case 'SVQ1':
 806                                      case 'SVQ3':
 807                                      case 'tiff':
 808                                      case 'v210':
 809                                      case 'v216':
 810                                      case 'v308':
 811                                      case 'v408':
 812                                      case 'v410':
 813                                      case 'yuv2':
 814                                          $info['fileformat'] = 'mp4';
 815                                          $info['video']['fourcc'] = $atom_structure['sample_description_table'][$i]['data_format'];
 816                                          if ($this->QuicktimeVideoCodecLookup($info['video']['fourcc'])) {
 817                                              $info['video']['fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($info['video']['fourcc']);
 818                                          }
 819  
 820                                          // https://www.getid3.org/phpBB3/viewtopic.php?t=1550
 821                                          //if ((!empty($atom_structure['sample_description_table'][$i]['width']) && !empty($atom_structure['sample_description_table'][$i]['width'])) && (empty($info['video']['resolution_x']) || empty($info['video']['resolution_y']) || (number_format($info['video']['resolution_x'], 6) != number_format(round($info['video']['resolution_x']), 6)) || (number_format($info['video']['resolution_y'], 6) != number_format(round($info['video']['resolution_y']), 6)))) { // ugly check for floating point numbers
 822                                          if (!empty($atom_structure['sample_description_table'][$i]['width']) && !empty($atom_structure['sample_description_table'][$i]['height'])) {
 823                                              // assume that values stored here are more important than values stored in [tkhd] atom
 824                                              $info['video']['resolution_x'] = $atom_structure['sample_description_table'][$i]['width'];
 825                                              $info['video']['resolution_y'] = $atom_structure['sample_description_table'][$i]['height'];
 826                                              $info['quicktime']['video']['resolution_x'] = $info['video']['resolution_x'];
 827                                              $info['quicktime']['video']['resolution_y'] = $info['video']['resolution_y'];
 828                                          }
 829                                          break;
 830  
 831                                      case 'qtvr':
 832                                          $info['video']['dataformat'] = 'quicktimevr';
 833                                          break;
 834  
 835                                      case 'mp4a':
 836                                      default:
 837                                          $info['quicktime']['audio']['codec']       = $this->QuicktimeAudioCodecLookup($atom_structure['sample_description_table'][$i]['data_format']);
 838                                          $info['quicktime']['audio']['sample_rate'] = $atom_structure['sample_description_table'][$i]['audio_sample_rate'];
 839                                          $info['quicktime']['audio']['channels']    = $atom_structure['sample_description_table'][$i]['audio_channels'];
 840                                          $info['quicktime']['audio']['bit_depth']   = $atom_structure['sample_description_table'][$i]['audio_bit_depth'];
 841                                          $info['audio']['codec']                    = $info['quicktime']['audio']['codec'];
 842                                          $info['audio']['sample_rate']              = $info['quicktime']['audio']['sample_rate'];
 843                                          $info['audio']['channels']                 = $info['quicktime']['audio']['channels'];
 844                                          $info['audio']['bits_per_sample']          = $info['quicktime']['audio']['bit_depth'];
 845                                          switch ($atom_structure['sample_description_table'][$i]['data_format']) {
 846                                              case 'raw ': // PCM
 847                                              case 'alac': // Apple Lossless Audio Codec
 848                                              case 'sowt': // signed/two's complement (Little Endian)
 849                                              case 'twos': // signed/two's complement (Big Endian)
 850                                              case 'in24': // 24-bit Integer
 851                                              case 'in32': // 32-bit Integer
 852                                              case 'fl32': // 32-bit Floating Point
 853                                              case 'fl64': // 64-bit Floating Point
 854                                                  $info['audio']['lossless'] = $info['quicktime']['audio']['lossless'] = true;
 855                                                  $info['audio']['bitrate']  = $info['quicktime']['audio']['bitrate']  = $info['audio']['channels'] * $info['audio']['bits_per_sample'] * $info['audio']['sample_rate'];
 856                                                  break;
 857                                              default:
 858                                                  $info['audio']['lossless'] = false;
 859                                                  break;
 860                                          }
 861                                          break;
 862                                  }
 863                                  break;
 864  
 865                              default:
 866                                  switch ($atom_structure['sample_description_table'][$i]['data_format']) {
 867                                      case 'mp4s':
 868                                          $info['fileformat'] = 'mp4';
 869                                          break;
 870  
 871                                      default:
 872                                          // video atom
 873                                          $atom_structure['sample_description_table'][$i]['video_temporal_quality']  =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'],  8,  4));
 874                                          $atom_structure['sample_description_table'][$i]['video_spatial_quality']   =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 12,  4));
 875                                          $atom_structure['sample_description_table'][$i]['video_frame_width']       =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 16,  2));
 876                                          $atom_structure['sample_description_table'][$i]['video_frame_height']      =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 18,  2));
 877                                          $atom_structure['sample_description_table'][$i]['video_resolution_x']      = getid3_lib::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 20,  4));
 878                                          $atom_structure['sample_description_table'][$i]['video_resolution_y']      = getid3_lib::FixedPoint16_16(substr($atom_structure['sample_description_table'][$i]['data'], 24,  4));
 879                                          $atom_structure['sample_description_table'][$i]['video_data_size']         =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 28,  4));
 880                                          $atom_structure['sample_description_table'][$i]['video_frame_count']       =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 32,  2));
 881                                          $atom_structure['sample_description_table'][$i]['video_encoder_name_len']  =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 34,  1));
 882                                          $atom_structure['sample_description_table'][$i]['video_encoder_name']      =                             substr($atom_structure['sample_description_table'][$i]['data'], 35, $atom_structure['sample_description_table'][$i]['video_encoder_name_len']);
 883                                          $atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 66,  2));
 884                                          $atom_structure['sample_description_table'][$i]['video_color_table_id']    =   getid3_lib::BigEndian2Int(substr($atom_structure['sample_description_table'][$i]['data'], 68,  2));
 885  
 886                                          $atom_structure['sample_description_table'][$i]['video_pixel_color_type']  = (($atom_structure['sample_description_table'][$i]['video_pixel_color_depth'] > 32) ? 'grayscale' : 'color');
 887                                          $atom_structure['sample_description_table'][$i]['video_pixel_color_name']  = $this->QuicktimeColorNameLookup($atom_structure['sample_description_table'][$i]['video_pixel_color_depth']);
 888  
 889                                          if ($atom_structure['sample_description_table'][$i]['video_pixel_color_name'] != 'invalid') {
 890                                              $info['quicktime']['video']['codec_fourcc']        = $atom_structure['sample_description_table'][$i]['data_format'];
 891                                              $info['quicktime']['video']['codec_fourcc_lookup'] = $this->QuicktimeVideoCodecLookup($atom_structure['sample_description_table'][$i]['data_format']);
 892                                              $info['quicktime']['video']['codec']               = (($atom_structure['sample_description_table'][$i]['video_encoder_name_len'] > 0) ? $atom_structure['sample_description_table'][$i]['video_encoder_name'] : $atom_structure['sample_description_table'][$i]['data_format']);
 893                                              $info['quicktime']['video']['color_depth']         = $atom_structure['sample_description_table'][$i]['video_pixel_color_depth'];
 894                                              $info['quicktime']['video']['color_depth_name']    = $atom_structure['sample_description_table'][$i]['video_pixel_color_name'];
 895  
 896                                              $info['video']['codec']           = $info['quicktime']['video']['codec'];
 897                                              $info['video']['bits_per_sample'] = $info['quicktime']['video']['color_depth'];
 898                                          }
 899                                          $info['video']['lossless']           = false;
 900                                          $info['video']['pixel_aspect_ratio'] = (float) 1;
 901                                          break;
 902                                  }
 903                                  break;
 904                          }
 905                          switch (strtolower($atom_structure['sample_description_table'][$i]['data_format'])) {
 906                              case 'mp4a':
 907                                  $info['audio']['dataformat']         = 'mp4';
 908                                  $info['quicktime']['audio']['codec'] = 'mp4';
 909                                  break;
 910  
 911                              case '3ivx':
 912                              case '3iv1':
 913                              case '3iv2':
 914                                  $info['video']['dataformat'] = '3ivx';
 915                                  break;
 916  
 917                              case 'xvid':
 918                                  $info['video']['dataformat'] = 'xvid';
 919                                  break;
 920  
 921                              case 'mp4v':
 922                                  $info['video']['dataformat'] = 'mpeg4';
 923                                  break;
 924  
 925                              case 'divx':
 926                              case 'div1':
 927                              case 'div2':
 928                              case 'div3':
 929                              case 'div4':
 930                              case 'div5':
 931                              case 'div6':
 932                                  $info['video']['dataformat'] = 'divx';
 933                                  break;
 934  
 935                              default:
 936                                  // do nothing
 937                                  break;
 938                          }
 939                          unset($atom_structure['sample_description_table'][$i]['data']);
 940                      }
 941                      break;
 942  
 943  
 944                  case 'stts': // Sample Table Time-to-Sample atom
 945                      $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 946                      $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
 947                      $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
 948                      $sttsEntriesDataOffset = 8;
 949                      //$FrameRateCalculatorArray = array();
 950                      $frames_count = 0;
 951  
 952                      $max_stts_entries_to_scan = ($info['php_memory_limit'] ? min(floor($this->getid3->memory_limit / 10000), $atom_structure['number_entries']) : $atom_structure['number_entries']);
 953                      if ($max_stts_entries_to_scan < $atom_structure['number_entries']) {
 954                          $this->warning('QuickTime atom "stts" has '.$atom_structure['number_entries'].' but only scanning the first '.$max_stts_entries_to_scan.' entries due to limited PHP memory available ('.floor($this->getid3->memory_limit / 1048576).'MB).');
 955                      }
 956                      for ($i = 0; $i < $max_stts_entries_to_scan; $i++) {
 957                          $atom_structure['time_to_sample_table'][$i]['sample_count']    = getid3_lib::BigEndian2Int(substr($atom_data, $sttsEntriesDataOffset, 4));
 958                          $sttsEntriesDataOffset += 4;
 959                          $atom_structure['time_to_sample_table'][$i]['sample_duration'] = getid3_lib::BigEndian2Int(substr($atom_data, $sttsEntriesDataOffset, 4));
 960                          $sttsEntriesDataOffset += 4;
 961  
 962                          $frames_count += $atom_structure['time_to_sample_table'][$i]['sample_count'];
 963  
 964                          // THIS SECTION REPLACED WITH CODE IN "stbl" ATOM
 965                          //if (!empty($info['quicktime']['time_scale']) && ($atom_structure['time_to_sample_table'][$i]['sample_duration'] > 0)) {
 966                          //    $stts_new_framerate = $info['quicktime']['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration'];
 967                          //    if ($stts_new_framerate <= 60) {
 968                          //        // some atoms have durations of "1" giving a very large framerate, which probably is not right
 969                          //        $info['video']['frame_rate'] = max($info['video']['frame_rate'], $stts_new_framerate);
 970                          //    }
 971                          //}
 972                          //
 973                          //$FrameRateCalculatorArray[($info['quicktime']['time_scale'] / $atom_structure['time_to_sample_table'][$i]['sample_duration'])] += $atom_structure['time_to_sample_table'][$i]['sample_count'];
 974                      }
 975                      $info['quicktime']['stts_framecount'][] = $frames_count;
 976                      //$sttsFramesTotal  = 0;
 977                      //$sttsSecondsTotal = 0;
 978                      //foreach ($FrameRateCalculatorArray as $frames_per_second => $frame_count) {
 979                      //    if (($frames_per_second > 60) || ($frames_per_second < 1)) {
 980                      //        // not video FPS information, probably audio information
 981                      //        $sttsFramesTotal  = 0;
 982                      //        $sttsSecondsTotal = 0;
 983                      //        break;
 984                      //    }
 985                      //    $sttsFramesTotal  += $frame_count;
 986                      //    $sttsSecondsTotal += $frame_count / $frames_per_second;
 987                      //}
 988                      //if (($sttsFramesTotal > 0) && ($sttsSecondsTotal > 0)) {
 989                      //    if (($sttsFramesTotal / $sttsSecondsTotal) > $info['video']['frame_rate']) {
 990                      //        $info['video']['frame_rate'] = $sttsFramesTotal / $sttsSecondsTotal;
 991                      //    }
 992                      //}
 993                      break;
 994  
 995  
 996                  case 'stss': // Sample Table Sync Sample (key frames) atom
 997                      if ($ParseAllPossibleAtoms) {
 998                          $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
 999                          $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1000                          $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1001                          $stssEntriesDataOffset = 8;
1002                          for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1003                              $atom_structure['time_to_sample_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stssEntriesDataOffset, 4));
1004                              $stssEntriesDataOffset += 4;
1005                          }
1006                      }
1007                      break;
1008  
1009  
1010                  case 'stsc': // Sample Table Sample-to-Chunk atom
1011                      if ($ParseAllPossibleAtoms) {
1012                          $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1013                          $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1014                          $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1015                          $stscEntriesDataOffset = 8;
1016                          for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1017                              $atom_structure['sample_to_chunk_table'][$i]['first_chunk']        = getid3_lib::BigEndian2Int(substr($atom_data, $stscEntriesDataOffset, 4));
1018                              $stscEntriesDataOffset += 4;
1019                              $atom_structure['sample_to_chunk_table'][$i]['samples_per_chunk']  = getid3_lib::BigEndian2Int(substr($atom_data, $stscEntriesDataOffset, 4));
1020                              $stscEntriesDataOffset += 4;
1021                              $atom_structure['sample_to_chunk_table'][$i]['sample_description'] = getid3_lib::BigEndian2Int(substr($atom_data, $stscEntriesDataOffset, 4));
1022                              $stscEntriesDataOffset += 4;
1023                          }
1024                      }
1025                      break;
1026  
1027  
1028                  case 'stsz': // Sample Table SiZe atom
1029                      if ($ParseAllPossibleAtoms) {
1030                          $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1031                          $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1032                          $atom_structure['sample_size']    = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1033                          $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
1034                          $stszEntriesDataOffset = 12;
1035                          if ($atom_structure['sample_size'] == 0) {
1036                              for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1037                                  $atom_structure['sample_size_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stszEntriesDataOffset, 4));
1038                                  $stszEntriesDataOffset += 4;
1039                              }
1040                          }
1041                      }
1042                      break;
1043  
1044  
1045                  case 'stco': // Sample Table Chunk Offset atom
1046  //                    if (true) {
1047                      if ($ParseAllPossibleAtoms) {
1048                          $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1049                          $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1050                          $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1051                          $stcoEntriesDataOffset = 8;
1052                          for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1053                              $atom_structure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stcoEntriesDataOffset, 4));
1054                              $stcoEntriesDataOffset += 4;
1055                          }
1056                      }
1057                      break;
1058  
1059  
1060                  case 'co64': // Chunk Offset 64-bit (version of "stco" that supports > 2GB files)
1061                      if ($ParseAllPossibleAtoms) {
1062                          $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1063                          $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1064                          $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1065                          $stcoEntriesDataOffset = 8;
1066                          for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1067                              $atom_structure['chunk_offset_table'][$i] = getid3_lib::BigEndian2Int(substr($atom_data, $stcoEntriesDataOffset, 8));
1068                              $stcoEntriesDataOffset += 8;
1069                          }
1070                      }
1071                      break;
1072  
1073  
1074                  case 'dref': // Data REFerence atom
1075                      $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1076                      $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1077                      $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1078                      $drefDataOffset = 8;
1079                      for ($i = 0; $i < $atom_structure['number_entries']; $i++) {
1080                          $atom_structure['data_references'][$i]['size']                    = getid3_lib::BigEndian2Int(substr($atom_data, $drefDataOffset, 4));
1081                          $drefDataOffset += 4;
1082                          $atom_structure['data_references'][$i]['type']                    =                           substr($atom_data, $drefDataOffset, 4);
1083                          $drefDataOffset += 4;
1084                          $atom_structure['data_references'][$i]['version']                 = getid3_lib::BigEndian2Int(substr($atom_data,  $drefDataOffset, 1));
1085                          $drefDataOffset += 1;
1086                          $atom_structure['data_references'][$i]['flags_raw']               = getid3_lib::BigEndian2Int(substr($atom_data,  $drefDataOffset, 3)); // hardcoded: 0x0000
1087                          $drefDataOffset += 3;
1088                          $atom_structure['data_references'][$i]['data']                    =                           substr($atom_data, $drefDataOffset, ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3));
1089                          $drefDataOffset += ($atom_structure['data_references'][$i]['size'] - 4 - 4 - 1 - 3);
1090  
1091                          $atom_structure['data_references'][$i]['flags']['self_reference'] = (bool) ($atom_structure['data_references'][$i]['flags_raw'] & 0x001);
1092                      }
1093                      break;
1094  
1095  
1096                  case 'gmin': // base Media INformation atom
1097                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1098                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1099                      $atom_structure['graphics_mode']          = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2));
1100                      $atom_structure['opcolor_red']            = getid3_lib::BigEndian2Int(substr($atom_data,  6, 2));
1101                      $atom_structure['opcolor_green']          = getid3_lib::BigEndian2Int(substr($atom_data,  8, 2));
1102                      $atom_structure['opcolor_blue']           = getid3_lib::BigEndian2Int(substr($atom_data, 10, 2));
1103                      $atom_structure['balance']                = getid3_lib::BigEndian2Int(substr($atom_data, 12, 2));
1104                      $atom_structure['reserved']               = getid3_lib::BigEndian2Int(substr($atom_data, 14, 2));
1105                      break;
1106  
1107  
1108                  case 'smhd': // Sound Media information HeaDer atom
1109                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1110                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1111                      $atom_structure['balance']                = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2));
1112                      $atom_structure['reserved']               = getid3_lib::BigEndian2Int(substr($atom_data,  6, 2));
1113                      break;
1114  
1115  
1116                  case 'vmhd': // Video Media information HeaDer atom
1117                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1118                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3));
1119                      $atom_structure['graphics_mode']          = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2));
1120                      $atom_structure['opcolor_red']            = getid3_lib::BigEndian2Int(substr($atom_data,  6, 2));
1121                      $atom_structure['opcolor_green']          = getid3_lib::BigEndian2Int(substr($atom_data,  8, 2));
1122                      $atom_structure['opcolor_blue']           = getid3_lib::BigEndian2Int(substr($atom_data, 10, 2));
1123  
1124                      $atom_structure['flags']['no_lean_ahead'] = (bool) ($atom_structure['flags_raw'] & 0x001);
1125                      break;
1126  
1127  
1128                  case 'hdlr': // HanDLeR reference atom
1129                      $atom_structure['version']                = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1130                      $atom_structure['flags_raw']              = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1131                      $atom_structure['component_type']         =                           substr($atom_data,  4, 4);
1132                      $atom_structure['component_subtype']      =                           substr($atom_data,  8, 4);
1133                      $atom_structure['component_manufacturer'] =                           substr($atom_data, 12, 4);
1134                      $atom_structure['component_flags_raw']    = getid3_lib::BigEndian2Int(substr($atom_data, 16, 4));
1135                      $atom_structure['component_flags_mask']   = getid3_lib::BigEndian2Int(substr($atom_data, 20, 4));
1136                      $atom_structure['component_name']         =      $this->Pascal2String(substr($atom_data, 24));
1137  
1138                      if (($atom_structure['component_subtype'] == 'STpn') && ($atom_structure['component_manufacturer'] == 'zzzz')) {
1139                          $info['video']['dataformat'] = 'quicktimevr';
1140                      }
1141                      break;
1142  
1143  
1144                  case 'mdhd': // MeDia HeaDer atom
1145                      $atom_structure['version']               = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1146                      $atom_structure['flags_raw']             = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1147                      $atom_structure['creation_time']         = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1148                      $atom_structure['modify_time']           = getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
1149                      $atom_structure['time_scale']            = getid3_lib::BigEndian2Int(substr($atom_data, 12, 4));
1150                      $atom_structure['duration']              = getid3_lib::BigEndian2Int(substr($atom_data, 16, 4));
1151                      $atom_structure['language_id']           = getid3_lib::BigEndian2Int(substr($atom_data, 20, 2));
1152                      $atom_structure['quality']               = getid3_lib::BigEndian2Int(substr($atom_data, 22, 2));
1153  
1154                      if ($atom_structure['time_scale'] == 0) {
1155                          $this->error('Corrupt Quicktime file: mdhd.time_scale == zero');
1156                          return false;
1157                      }
1158                      $info['quicktime']['time_scale'] = ((isset($info['quicktime']['time_scale']) && ($info['quicktime']['time_scale'] < 1000)) ? max($info['quicktime']['time_scale'], $atom_structure['time_scale']) : $atom_structure['time_scale']);
1159  
1160                      $atom_structure['creation_time_unix']    = getid3_lib::DateMac2Unix($atom_structure['creation_time']);
1161                      $atom_structure['modify_time_unix']      = getid3_lib::DateMac2Unix($atom_structure['modify_time']);
1162                      $atom_structure['playtime_seconds']      = $atom_structure['duration'] / $atom_structure['time_scale'];
1163                      $atom_structure['language']              = $this->QuicktimeLanguageLookup($atom_structure['language_id']);
1164                      if (empty($info['comments']['language']) || (!in_array($atom_structure['language'], $info['comments']['language']))) {
1165                          $info['comments']['language'][] = $atom_structure['language'];
1166                      }
1167                      break;
1168  
1169  
1170                  case 'pnot': // Preview atom
1171                      $atom_structure['modification_date']      = getid3_lib::BigEndian2Int(substr($atom_data,  0, 4)); // "standard Macintosh format"
1172                      $atom_structure['version_number']         = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2)); // hardcoded: 0x00
1173                      $atom_structure['atom_type']              =                           substr($atom_data,  6, 4);        // usually: 'PICT'
1174                      $atom_structure['atom_index']             = getid3_lib::BigEndian2Int(substr($atom_data, 10, 2)); // usually: 0x01
1175  
1176                      $atom_structure['modification_date_unix'] = getid3_lib::DateMac2Unix($atom_structure['modification_date']);
1177                      break;
1178  
1179  
1180                  case 'crgn': // Clipping ReGioN atom
1181                      $atom_structure['region_size']   = getid3_lib::BigEndian2Int(substr($atom_data,  0, 2)); // The Region size, Region boundary box,
1182                      $atom_structure['boundary_box']  = getid3_lib::BigEndian2Int(substr($atom_data,  2, 8)); // and Clipping region data fields
1183                      $atom_structure['clipping_data'] =                           substr($atom_data, 10);           // constitute a QuickDraw region.
1184                      break;
1185  
1186  
1187                  case 'load': // track LOAD settings atom
1188                      $atom_structure['preload_start_time'] = getid3_lib::BigEndian2Int(substr($atom_data,  0, 4));
1189                      $atom_structure['preload_duration']   = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1190                      $atom_structure['preload_flags_raw']  = getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
1191                      $atom_structure['default_hints_raw']  = getid3_lib::BigEndian2Int(substr($atom_data, 12, 4));
1192  
1193                      $atom_structure['default_hints']['double_buffer'] = (bool) ($atom_structure['default_hints_raw'] & 0x0020);
1194                      $atom_structure['default_hints']['high_quality']  = (bool) ($atom_structure['default_hints_raw'] & 0x0100);
1195                      break;
1196  
1197  
1198                  case 'tmcd': // TiMe CoDe atom
1199                  case 'chap': // CHAPter list atom
1200                  case 'sync': // SYNChronization atom
1201                  case 'scpt': // tranSCriPT atom
1202                  case 'ssrc': // non-primary SouRCe atom
1203                      for ($i = 0; $i < strlen($atom_data); $i += 4) {
1204                          @$atom_structure['track_id'][] = getid3_lib::BigEndian2Int(substr($atom_data, $i, 4));
1205                      }
1206                      break;
1207  
1208  
1209                  case 'elst': // Edit LiST atom
1210                      $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1211                      $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1212                      $atom_structure['number_entries'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1213                      for ($i = 0; $i < $atom_structure['number_entries']; $i++ ) {
1214                          $atom_structure['edit_list'][$i]['track_duration'] =   getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 0, 4));
1215                          $atom_structure['edit_list'][$i]['media_time']     =   getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($i * 12) + 4, 4));
1216                          $atom_structure['edit_list'][$i]['media_rate']     = getid3_lib::FixedPoint16_16(substr($atom_data, 8 + ($i * 12) + 8, 4));
1217                      }
1218                      break;
1219  
1220  
1221                  case 'kmat': // compressed MATte atom
1222                      $atom_structure['version']        = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1223                      $atom_structure['flags_raw']      = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3)); // hardcoded: 0x0000
1224                      $atom_structure['matte_data_raw'] =               substr($atom_data,  4);
1225                      break;
1226  
1227  
1228                  case 'ctab': // Color TABle atom
1229                      $atom_structure['color_table_seed']   = getid3_lib::BigEndian2Int(substr($atom_data,  0, 4)); // hardcoded: 0x00000000
1230                      $atom_structure['color_table_flags']  = getid3_lib::BigEndian2Int(substr($atom_data,  4, 2)); // hardcoded: 0x8000
1231                      $atom_structure['color_table_size']   = getid3_lib::BigEndian2Int(substr($atom_data,  6, 2)) + 1;
1232                      for ($colortableentry = 0; $colortableentry < $atom_structure['color_table_size']; $colortableentry++) {
1233                          $atom_structure['color_table'][$colortableentry]['alpha'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 0, 2));
1234                          $atom_structure['color_table'][$colortableentry]['red']   = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 2, 2));
1235                          $atom_structure['color_table'][$colortableentry]['green'] = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 4, 2));
1236                          $atom_structure['color_table'][$colortableentry]['blue']  = getid3_lib::BigEndian2Int(substr($atom_data, 8 + ($colortableentry * 8) + 6, 2));
1237                      }
1238                      break;
1239  
1240  
1241                  case 'mvhd': // MoVie HeaDer atom
1242                      $atom_structure['version']            =   getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1243                      $atom_structure['flags_raw']          =   getid3_lib::BigEndian2Int(substr($atom_data,  1, 3));
1244                      $atom_structure['creation_time']      =   getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1245                      $atom_structure['modify_time']        =   getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
1246                      $atom_structure['time_scale']         =   getid3_lib::BigEndian2Int(substr($atom_data, 12, 4));
1247                      $atom_structure['duration']           =   getid3_lib::BigEndian2Int(substr($atom_data, 16, 4));
1248                      $atom_structure['preferred_rate']     = getid3_lib::FixedPoint16_16(substr($atom_data, 20, 4));
1249                      $atom_structure['preferred_volume']   =   getid3_lib::FixedPoint8_8(substr($atom_data, 24, 2));
1250                      $atom_structure['reserved']           =                             substr($atom_data, 26, 10);
1251                      $atom_structure['matrix_a']           = getid3_lib::FixedPoint16_16(substr($atom_data, 36, 4));
1252                      $atom_structure['matrix_b']           = getid3_lib::FixedPoint16_16(substr($atom_data, 40, 4));
1253                      $atom_structure['matrix_u']           =  getid3_lib::FixedPoint2_30(substr($atom_data, 44, 4));
1254                      $atom_structure['matrix_c']           = getid3_lib::FixedPoint16_16(substr($atom_data, 48, 4));
1255                      $atom_structure['matrix_d']           = getid3_lib::FixedPoint16_16(substr($atom_data, 52, 4));
1256                      $atom_structure['matrix_v']           =  getid3_lib::FixedPoint2_30(substr($atom_data, 56, 4));
1257                      $atom_structure['matrix_x']           = getid3_lib::FixedPoint16_16(substr($atom_data, 60, 4));
1258                      $atom_structure['matrix_y']           = getid3_lib::FixedPoint16_16(substr($atom_data, 64, 4));
1259                      $atom_structure['matrix_w']           =  getid3_lib::FixedPoint2_30(substr($atom_data, 68, 4));
1260                      $atom_structure['preview_time']       =   getid3_lib::BigEndian2Int(substr($atom_data, 72, 4));
1261                      $atom_structure['preview_duration']   =   getid3_lib::BigEndian2Int(substr($atom_data, 76, 4));
1262                      $atom_structure['poster_time']        =   getid3_lib::BigEndian2Int(substr($atom_data, 80, 4));
1263                      $atom_structure['selection_time']     =   getid3_lib::BigEndian2Int(substr($atom_data, 84, 4));
1264                      $atom_structure['selection_duration'] =   getid3_lib::BigEndian2Int(substr($atom_data, 88, 4));
1265                      $atom_structure['current_time']       =   getid3_lib::BigEndian2Int(substr($atom_data, 92, 4));
1266                      $atom_structure['next_track_id']      =   getid3_lib::BigEndian2Int(substr($atom_data, 96, 4));
1267  
1268                      if ($atom_structure['time_scale'] == 0) {
1269                          $this->error('Corrupt Quicktime file: mvhd.time_scale == zero');
1270                          return false;
1271                      }
1272                      $atom_structure['creation_time_unix']        = getid3_lib::DateMac2Unix($atom_structure['creation_time']);
1273                      $atom_structure['modify_time_unix']          = getid3_lib::DateMac2Unix($atom_structure['modify_time']);
1274                      $info['quicktime']['time_scale']    = ((isset($info['quicktime']['time_scale']) && ($info['quicktime']['time_scale'] < 1000)) ? max($info['quicktime']['time_scale'], $atom_structure['time_scale']) : $atom_structure['time_scale']);
1275                      $info['quicktime']['display_scale'] = $atom_structure['matrix_a'];
1276                      $info['playtime_seconds']           = $atom_structure['duration'] / $atom_structure['time_scale'];
1277                      break;
1278  
1279  
1280                  case 'tkhd': // TracK HeaDer atom
1281                      $atom_structure['version']             =   getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1282                      $atom_structure['flags_raw']           =   getid3_lib::BigEndian2Int(substr($atom_data,  1, 3));
1283                      $atom_structure['creation_time']       =   getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1284                      $atom_structure['modify_time']         =   getid3_lib::BigEndian2Int(substr($atom_data,  8, 4));
1285                      $atom_structure['trackid']             =   getid3_lib::BigEndian2Int(substr($atom_data, 12, 4));
1286                      $atom_structure['reserved1']           =   getid3_lib::BigEndian2Int(substr($atom_data, 16, 4));
1287                      $atom_structure['duration']            =   getid3_lib::BigEndian2Int(substr($atom_data, 20, 4));
1288                      $atom_structure['reserved2']           =   getid3_lib::BigEndian2Int(substr($atom_data, 24, 8));
1289                      $atom_structure['layer']               =   getid3_lib::BigEndian2Int(substr($atom_data, 32, 2));
1290                      $atom_structure['alternate_group']     =   getid3_lib::BigEndian2Int(substr($atom_data, 34, 2));
1291                      $atom_structure['volume']              =   getid3_lib::FixedPoint8_8(substr($atom_data, 36, 2));
1292                      $atom_structure['reserved3']           =   getid3_lib::BigEndian2Int(substr($atom_data, 38, 2));
1293                      // http://developer.apple.com/library/mac/#documentation/QuickTime/RM/MovieBasics/MTEditing/K-Chapter/11MatrixFunctions.html
1294                      // http://developer.apple.com/library/mac/#documentation/QuickTime/qtff/QTFFChap4/qtff4.html#//apple_ref/doc/uid/TP40000939-CH206-18737
1295                      $atom_structure['matrix_a']            = getid3_lib::FixedPoint16_16(substr($atom_data, 40, 4));
1296                      $atom_structure['matrix_b']            = getid3_lib::FixedPoint16_16(substr($atom_data, 44, 4));
1297                      $atom_structure['matrix_u']            =  getid3_lib::FixedPoint2_30(substr($atom_data, 48, 4));
1298                      $atom_structure['matrix_c']            = getid3_lib::FixedPoint16_16(substr($atom_data, 52, 4));
1299                      $atom_structure['matrix_d']            = getid3_lib::FixedPoint16_16(substr($atom_data, 56, 4));
1300                      $atom_structure['matrix_v']            =  getid3_lib::FixedPoint2_30(substr($atom_data, 60, 4));
1301                      $atom_structure['matrix_x']            = getid3_lib::FixedPoint16_16(substr($atom_data, 64, 4));
1302                      $atom_structure['matrix_y']            = getid3_lib::FixedPoint16_16(substr($atom_data, 68, 4));
1303                      $atom_structure['matrix_w']            =  getid3_lib::FixedPoint2_30(substr($atom_data, 72, 4));
1304                      $atom_structure['width']               = getid3_lib::FixedPoint16_16(substr($atom_data, 76, 4));
1305                      $atom_structure['height']              = getid3_lib::FixedPoint16_16(substr($atom_data, 80, 4));
1306                      $atom_structure['flags']['enabled']    = (bool) ($atom_structure['flags_raw'] & 0x0001);
1307                      $atom_structure['flags']['in_movie']   = (bool) ($atom_structure['flags_raw'] & 0x0002);
1308                      $atom_structure['flags']['in_preview'] = (bool) ($atom_structure['flags_raw'] & 0x0004);
1309                      $atom_structure['flags']['in_poster']  = (bool) ($atom_structure['flags_raw'] & 0x0008);
1310                      $atom_structure['creation_time_unix']  = getid3_lib::DateMac2Unix($atom_structure['creation_time']);
1311                      $atom_structure['modify_time_unix']    = getid3_lib::DateMac2Unix($atom_structure['modify_time']);
1312  
1313                      // https://www.getid3.org/phpBB3/viewtopic.php?t=1908
1314                      // attempt to compute rotation from matrix values
1315                      // 2017-Dec-28: uncertain if 90/270 are correctly oriented; values returned by FixedPoint16_16 should perhaps be -1 instead of 65535(?)
1316                      $matrixRotation = 0;
1317                      switch ($atom_structure['matrix_a'].':'.$atom_structure['matrix_b'].':'.$atom_structure['matrix_c'].':'.$atom_structure['matrix_d']) {
1318                          case '1:0:0:1':         $matrixRotation =   0; break;
1319                          case '0:1:65535:0':     $matrixRotation =  90; break;
1320                          case '65535:0:0:65535': $matrixRotation = 180; break;
1321                          case '0:65535:1:0':     $matrixRotation = 270; break;
1322                          default: break;
1323                      }
1324  
1325                      // https://www.getid3.org/phpBB3/viewtopic.php?t=2468
1326                      // The rotation matrix can appear in the Quicktime file multiple times, at least once for each track,
1327                      // and it's possible that only the video track (or, in theory, one of the video tracks) is flagged as
1328                      // rotated while the other tracks (e.g. audio) is tagged as rotation=0 (behavior noted on iPhone 8 Plus)
1329                      // The correct solution would be to check if the TrackID associated with the rotation matrix is indeed
1330                      // a video track (or the main video track) and only set the rotation then, but since information about
1331                      // what track is what is not trivially there to be examined, the lazy solution is to set the rotation
1332                      // if it is found to be nonzero, on the assumption that tracks that don't need it will have rotation set
1333                      // to zero (and be effectively ignored) and the video track will have rotation set correctly, which will
1334                      // either be zero and automatically correct, or nonzero and be set correctly.
1335                      if (!isset($info['video']['rotate']) || (($info['video']['rotate'] == 0) && ($matrixRotation > 0))) {
1336                          $info['quicktime']['video']['rotate'] = $info['video']['rotate'] = $matrixRotation;
1337                      }
1338  
1339                      if ($atom_structure['flags']['enabled'] == 1) {
1340                          if (!isset($info['video']['resolution_x']) || !isset($info['video']['resolution_y'])) {
1341                              $info['video']['resolution_x'] = $atom_structure['width'];
1342                              $info['video']['resolution_y'] = $atom_structure['height'];
1343                          }
1344                          $info['video']['resolution_x'] = max($info['video']['resolution_x'], $atom_structure['width']);
1345                          $info['video']['resolution_y'] = max($info['video']['resolution_y'], $atom_structure['height']);
1346                          $info['quicktime']['video']['resolution_x'] = $info['video']['resolution_x'];
1347                          $info['quicktime']['video']['resolution_y'] = $info['video']['resolution_y'];
1348                      } else {
1349                          // see: https://www.getid3.org/phpBB3/viewtopic.php?t=1295
1350                          //if (isset($info['video']['resolution_x'])) { unset($info['video']['resolution_x']); }
1351                          //if (isset($info['video']['resolution_y'])) { unset($info['video']['resolution_y']); }
1352                          //if (isset($info['quicktime']['video']))    { unset($info['quicktime']['video']);    }
1353                      }
1354                      break;
1355  
1356  
1357                  case 'iods': // Initial Object DeScriptor atom
1358                      // http://www.koders.com/c/fid1FAB3E762903DC482D8A246D4A4BF9F28E049594.aspx?s=windows.h
1359                      // http://libquicktime.sourcearchive.com/documentation/1.0.2plus-pdebian/iods_8c-source.html
1360                      $offset = 0;
1361                      $atom_structure['version']                =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1362                      $offset += 1;
1363                      $atom_structure['flags_raw']              =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 3));
1364                      $offset += 3;
1365                      $atom_structure['mp4_iod_tag']            =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1366                      $offset += 1;
1367                      $atom_structure['length']                 = $this->quicktime_read_mp4_descr_length($atom_data, $offset);
1368                      //$offset already adjusted by quicktime_read_mp4_descr_length()
1369                      $atom_structure['object_descriptor_id']   =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 2));
1370                      $offset += 2;
1371                      $atom_structure['od_profile_level']       =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1372                      $offset += 1;
1373                      $atom_structure['scene_profile_level']    =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1374                      $offset += 1;
1375                      $atom_structure['audio_profile_id']       =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1376                      $offset += 1;
1377                      $atom_structure['video_profile_id']       =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1378                      $offset += 1;
1379                      $atom_structure['graphics_profile_level'] =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1380                      $offset += 1;
1381  
1382                      $atom_structure['num_iods_tracks'] = ($atom_structure['length'] - 7) / 6; // 6 bytes would only be right if all tracks use 1-byte length fields
1383                      for ($i = 0; $i < $atom_structure['num_iods_tracks']; $i++) {
1384                          $atom_structure['track'][$i]['ES_ID_IncTag'] =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 1));
1385                          $offset += 1;
1386                          $atom_structure['track'][$i]['length']       = $this->quicktime_read_mp4_descr_length($atom_data, $offset);
1387                          //$offset already adjusted by quicktime_read_mp4_descr_length()
1388                          $atom_structure['track'][$i]['track_id']     =       getid3_lib::BigEndian2Int(substr($atom_data, $offset, 4));
1389                          $offset += 4;
1390                      }
1391  
1392                      $atom_structure['audio_profile_name'] = $this->QuicktimeIODSaudioProfileName($atom_structure['audio_profile_id']);
1393                      $atom_structure['video_profile_name'] = $this->QuicktimeIODSvideoProfileName($atom_structure['video_profile_id']);
1394                      break;
1395  
1396                  case 'ftyp': // FileTYPe (?) atom (for MP4 it seems)
1397                      $atom_structure['signature'] =                           substr($atom_data,  0, 4);
1398                      $atom_structure['unknown_1'] = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1399                      $atom_structure['fourcc']    =                           substr($atom_data,  8, 4);
1400                      break;
1401  
1402                  case 'mdat': // Media DATa atom
1403                      // 'mdat' contains the actual data for the audio/video, possibly also subtitles
1404  
1405      /* due to lack of known documentation, this is a kludge implementation. If you know of documentation on how mdat is properly structed, please send it to info@getid3.org */
1406  
1407                      // first, skip any 'wide' padding, and second 'mdat' header (with specified size of zero?)
1408                      $mdat_offset = 0;
1409                      while (true) {
1410                          if (substr($atom_data, $mdat_offset, 8) == "\x00\x00\x00\x08".'wide') {
1411                              $mdat_offset += 8;
1412                          } elseif (substr($atom_data, $mdat_offset, 8) == "\x00\x00\x00\x00".'mdat') {
1413                              $mdat_offset += 8;
1414                          } else {
1415                              break;
1416                          }
1417                      }
1418                      if (substr($atom_data, $mdat_offset, 4) == 'GPRO') {
1419                          $GOPRO_chunk_length = getid3_lib::LittleEndian2Int(substr($atom_data, $mdat_offset + 4, 4));
1420                          $GOPRO_offset = 8;
1421                          $atom_structure['GPRO']['raw'] = substr($atom_data, $mdat_offset + 8, $GOPRO_chunk_length - 8);
1422                          $atom_structure['GPRO']['firmware'] = substr($atom_structure['GPRO']['raw'],  0, 15);
1423                          $atom_structure['GPRO']['unknown1'] = substr($atom_structure['GPRO']['raw'], 15, 16);
1424                          $atom_structure['GPRO']['unknown2'] = substr($atom_structure['GPRO']['raw'], 31, 32);
1425                          $atom_structure['GPRO']['unknown3'] = substr($atom_structure['GPRO']['raw'], 63, 16);
1426                          $atom_structure['GPRO']['camera']   = substr($atom_structure['GPRO']['raw'], 79, 32);
1427                          $info['quicktime']['camera']['model'] = rtrim($atom_structure['GPRO']['camera'], "\x00");
1428                      }
1429  
1430                      // check to see if it looks like chapter titles, in the form of unterminated strings with a leading 16-bit size field
1431                      while (($mdat_offset < (strlen($atom_data) - 8))
1432                          && ($chapter_string_length = getid3_lib::BigEndian2Int(substr($atom_data, $mdat_offset, 2)))
1433                          && ($chapter_string_length < 1000)
1434                          && ($chapter_string_length <= (strlen($atom_data) - $mdat_offset - 2))
1435                          && preg_match('#^([\x00-\xFF]{2})([\x20-\xFF]+)$#', substr($atom_data, $mdat_offset, $chapter_string_length + 2), $chapter_matches)) {
1436                              list($dummy, $chapter_string_length_hex, $chapter_string) = $chapter_matches;
1437                              $mdat_offset += (2 + $chapter_string_length);
1438                              @$info['quicktime']['comments']['chapters'][] = $chapter_string;
1439  
1440                              // "encd" atom specifies encoding. In theory could be anything, almost always UTF-8, but may be UTF-16 with BOM (not currently handled)
1441                              if (substr($atom_data, $mdat_offset, 12) == "\x00\x00\x00\x0C\x65\x6E\x63\x64\x00\x00\x01\x00") { // UTF-8
1442                                  $mdat_offset += 12;
1443                              }
1444                      }
1445  
1446                      if (($atomsize > 8) && (!isset($info['avdataend_tmp']) || ($info['quicktime'][$atomname]['size'] > ($info['avdataend_tmp'] - $info['avdataoffset'])))) {
1447  
1448                          $info['avdataoffset'] = $atom_structure['offset'] + 8;                       // $info['quicktime'][$atomname]['offset'] + 8;
1449                          $OldAVDataEnd         = $info['avdataend'];
1450                          $info['avdataend']    = $atom_structure['offset'] + $atom_structure['size']; // $info['quicktime'][$atomname]['offset'] + $info['quicktime'][$atomname]['size'];
1451  
1452                          $getid3_temp = new getID3();
1453                          $getid3_temp->openfile($this->getid3->filename);
1454                          $getid3_temp->info['avdataoffset'] = $info['avdataoffset'];
1455                          $getid3_temp->info['avdataend']    = $info['avdataend'];
1456                          $getid3_mp3 = new getid3_mp3($getid3_temp);
1457                          if ($getid3_mp3->MPEGaudioHeaderValid($getid3_mp3->MPEGaudioHeaderDecode($this->fread(4)))) {
1458                              $getid3_mp3->getOnlyMPEGaudioInfo($getid3_temp->info['avdataoffset'], false);
1459                              if (!empty($getid3_temp->info['warning'])) {
1460                                  foreach ($getid3_temp->info['warning'] as $value) {
1461                                      $this->warning($value);
1462                                  }
1463                              }
1464                              if (!empty($getid3_temp->info['mpeg'])) {
1465                                  $info['mpeg'] = $getid3_temp->info['mpeg'];
1466                                  if (isset($info['mpeg']['audio'])) {
1467                                      $info['audio']['dataformat']   = 'mp3';
1468                                      $info['audio']['codec']        = (!empty($info['mpeg']['audio']['encoder']) ? $info['mpeg']['audio']['encoder'] : (!empty($info['mpeg']['audio']['codec']) ? $info['mpeg']['audio']['codec'] : (!empty($info['mpeg']['audio']['LAME']) ? 'LAME' :'mp3')));
1469                                      $info['audio']['sample_rate']  = $info['mpeg']['audio']['sample_rate'];
1470                                      $info['audio']['channels']     = $info['mpeg']['audio']['channels'];
1471                                      $info['audio']['bitrate']      = $info['mpeg']['audio']['bitrate'];
1472                                      $info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
1473                                      $info['bitrate']               = $info['audio']['bitrate'];
1474                                  }
1475                              }
1476                          }
1477                          unset($getid3_mp3, $getid3_temp);
1478                          $info['avdataend'] = $OldAVDataEnd;
1479                          unset($OldAVDataEnd);
1480  
1481                      }
1482  
1483                      unset($mdat_offset, $chapter_string_length, $chapter_matches);
1484                      break;
1485  
1486                  case 'free': // FREE space atom
1487                  case 'skip': // SKIP atom
1488                  case 'wide': // 64-bit expansion placeholder atom
1489                      // 'free', 'skip' and 'wide' are just padding, contains no useful data at all
1490  
1491                      // When writing QuickTime files, it is sometimes necessary to update an atom's size.
1492                      // It is impossible to update a 32-bit atom to a 64-bit atom since the 32-bit atom
1493                      // is only 8 bytes in size, and the 64-bit atom requires 16 bytes. Therefore, QuickTime
1494                      // puts an 8-byte placeholder atom before any atoms it may have to update the size of.
1495                      // In this way, if the atom needs to be converted from a 32-bit to a 64-bit atom, the
1496                      // placeholder atom can be overwritten to obtain the necessary 8 extra bytes.
1497                      // The placeholder atom has a type of kWideAtomPlaceholderType ( 'wide' ).
1498                      break;
1499  
1500  
1501                  case 'nsav': // NoSAVe atom
1502                      // http://developer.apple.com/technotes/tn/tn2038.html
1503                      $atom_structure['data'] = getid3_lib::BigEndian2Int(substr($atom_data,  0, 4));
1504                      break;
1505  
1506                  case 'ctyp': // Controller TYPe atom (seen on QTVR)
1507                      // http://homepages.slingshot.co.nz/~helmboy/quicktime/formats/qtm-layout.txt
1508                      // some controller names are:
1509                      //   0x00 + 'std' for linear movie
1510                      //   'none' for no controls
1511                      $atom_structure['ctyp'] = substr($atom_data, 0, 4);
1512                      $info['quicktime']['controller'] = $atom_structure['ctyp'];
1513                      switch ($atom_structure['ctyp']) {
1514                          case 'qtvr':
1515                              $info['video']['dataformat'] = 'quicktimevr';
1516                              break;
1517                      }
1518                      break;
1519  
1520                  case 'pano': // PANOrama track (seen on QTVR)
1521                      $atom_structure['pano'] = getid3_lib::BigEndian2Int(substr($atom_data,  0, 4));
1522                      break;
1523  
1524                  case 'hint': // HINT track
1525                  case 'hinf': //
1526                  case 'hinv': //
1527                  case 'hnti': //
1528                      $info['quicktime']['hinting'] = true;
1529                      break;
1530  
1531                  case 'imgt': // IMaGe Track reference (kQTVRImageTrackRefType) (seen on QTVR)
1532                      for ($i = 0; $i < ($atom_structure['size'] - 8); $i += 4) {
1533                          $atom_structure['imgt'][] = getid3_lib::BigEndian2Int(substr($atom_data, $i, 4));
1534                      }
1535                      break;
1536  
1537  
1538                  // Observed-but-not-handled atom types are just listed here to prevent warnings being generated
1539                  case 'FXTC': // Something to do with Adobe After Effects (?)
1540                  case 'PrmA':
1541                  case 'code':
1542                  case 'FIEL': // this is NOT "fiel" (Field Ordering) as describe here: http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html
1543                  case 'tapt': // TrackApertureModeDimensionsAID - http://developer.apple.com/documentation/QuickTime/Reference/QT7-1_Update_Reference/Constants/Constants.html
1544                              // tapt seems to be used to compute the video size [https://www.getid3.org/phpBB3/viewtopic.php?t=838]
1545                              // * http://lists.apple.com/archives/quicktime-api/2006/Aug/msg00014.html
1546                              // * http://handbrake.fr/irclogs/handbrake-dev/handbrake-dev20080128_pg2.html
1547                  case 'ctts'://  STCompositionOffsetAID             - http://developer.apple.com/documentation/QuickTime/Reference/QTRef_Constants/Reference/reference.html
1548                  case 'cslg'://  STCompositionShiftLeastGreatestAID - http://developer.apple.com/documentation/QuickTime/Reference/QTRef_Constants/Reference/reference.html
1549                  case 'sdtp'://  STSampleDependencyAID              - http://developer.apple.com/documentation/QuickTime/Reference/QTRef_Constants/Reference/reference.html
1550                  case 'stps'://  STPartialSyncSampleAID             - http://developer.apple.com/documentation/QuickTime/Reference/QTRef_Constants/Reference/reference.html
1551                      //$atom_structure['data'] = $atom_data;
1552                      break;
1553  
1554                  case "\xA9".'xyz':  // GPS latitude+longitude+altitude
1555                      $atom_structure['data'] = $atom_data;
1556                      if (preg_match('#([\\+\\-][0-9\\.]+)([\\+\\-][0-9\\.]+)([\\+\\-][0-9\\.]+)?/$#i', $atom_data, $matches)) {
1557                          @list($all, $latitude, $longitude, $altitude) = $matches;
1558                          $info['quicktime']['comments']['gps_latitude'][]  = floatval($latitude);
1559                          $info['quicktime']['comments']['gps_longitude'][] = floatval($longitude);
1560                          if (!empty($altitude)) {
1561                              $info['quicktime']['comments']['gps_altitude'][] = floatval($altitude);
1562                          }
1563                      } else {
1564                          $this->warning('QuickTime atom "©xyz" data does not match expected data pattern at offset '.$baseoffset.'. Please report as getID3() bug.');
1565                      }
1566                      break;
1567  
1568                  case 'NCDT':
1569                      // http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html
1570                      // Nikon-specific QuickTime tags found in the NCDT atom of MOV videos from some Nikon cameras such as the Coolpix S8000 and D5100
1571                      $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 4, $atomHierarchy, $ParseAllPossibleAtoms);
1572                      break;
1573                  case 'NCTH': // Nikon Camera THumbnail image
1574                  case 'NCVW': // Nikon Camera preVieW image
1575                      // http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html
1576                      if (preg_match('/^\xFF\xD8\xFF/', $atom_data)) {
1577                          $atom_structure['data'] = $atom_data;
1578                          $atom_structure['image_mime'] = 'image/jpeg';
1579                          $atom_structure['description'] = (($atomname == 'NCTH') ? 'Nikon Camera Thumbnail Image' : (($atomname == 'NCVW') ? 'Nikon Camera Preview Image' : 'Nikon preview image'));
1580                          $info['quicktime']['comments']['picture'][] = array('image_mime'=>$atom_structure['image_mime'], 'data'=>$atom_data, 'description'=>$atom_structure['description']);
1581                      }
1582                      break;
1583                  case 'NCTG': // Nikon - http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html#NCTG
1584                      $atom_structure['data'] = $this->QuicktimeParseNikonNCTG($atom_data);
1585                      break;
1586                  case 'NCHD': // Nikon:MakerNoteVersion  - http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html
1587                  case 'NCDB': // Nikon                   - http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html
1588                  case 'CNCV': // Canon:CompressorVersion - http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Canon.html
1589                      $atom_structure['data'] = $atom_data;
1590                      break;
1591  
1592                  case "\x00\x00\x00\x00":
1593                      // some kind of metacontainer, may contain a big data dump such as:
1594                      // mdta keys \005 mdtacom.apple.quicktime.make (mdtacom.apple.quicktime.creationdate ,mdtacom.apple.quicktime.location.ISO6709 $mdtacom.apple.quicktime.software !mdtacom.apple.quicktime.model ilst \01D \001 \015data \001DE\010Apple 0 \002 (data \001DE\0102011-05-11T17:54:04+0200 2 \003 *data \001DE\010+52.4936+013.3897+040.247/ \01D \004 \015data \001DE\0104.3.1 \005 \018data \001DE\010iPhone 4
1595                      // http://www.geocities.com/xhelmboyx/quicktime/formats/qti-layout.txt
1596  
1597                      $atom_structure['version']   =          getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
1598                      $atom_structure['flags_raw'] =          getid3_lib::BigEndian2Int(substr($atom_data, 1, 3));
1599                      $atom_structure['subatoms']  = $this->QuicktimeParseContainerAtom(substr($atom_data, 4), $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
1600                      //$atom_structure['subatoms']  = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
1601                      break;
1602  
1603                  case 'meta': // METAdata atom
1604                      // https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/Metadata/Metadata.html
1605  
1606                      $atom_structure['version']   =          getid3_lib::BigEndian2Int(substr($atom_data, 0, 1));
1607                      $atom_structure['flags_raw'] =          getid3_lib::BigEndian2Int(substr($atom_data, 1, 3));
1608                      $atom_structure['subatoms']  = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 8, $atomHierarchy, $ParseAllPossibleAtoms);
1609                      break;
1610  
1611                  case 'data': // metaDATA atom
1612                      static $metaDATAkey = 1; // real ugly, but so is the QuickTime structure that stores keys and values in different multinested locations that are hard to relate to each other
1613                      // seems to be 2 bytes language code (ASCII), 2 bytes unknown (set to 0x10B5 in sample I have), remainder is useful data
1614                      $atom_structure['language'] =                           substr($atom_data, 4 + 0, 2);
1615                      $atom_structure['unknown']  = getid3_lib::BigEndian2Int(substr($atom_data, 4 + 2, 2));
1616                      $atom_structure['data']     =                           substr($atom_data, 4 + 4);
1617                      $atom_structure['key_name'] = @$info['quicktime']['temp_meta_key_names'][$metaDATAkey++];
1618  
1619                      if ($atom_structure['key_name'] && $atom_structure['data']) {
1620                          @$info['quicktime']['comments'][str_replace('com.apple.quicktime.', '', $atom_structure['key_name'])][] = $atom_structure['data'];
1621                      }
1622                      break;
1623  
1624                  case 'keys': // KEYS that may be present in the metadata atom.
1625                      // https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/Metadata/Metadata.html#//apple_ref/doc/uid/TP40000939-CH1-SW21
1626                      // The metadata item keys atom holds a list of the metadata keys that may be present in the metadata atom.
1627                      // This list is indexed starting with 1; 0 is a reserved index value. The metadata item keys atom is a full atom with an atom type of "keys".
1628                      $atom_structure['version']       = getid3_lib::BigEndian2Int(substr($atom_data,  0, 1));
1629                      $atom_structure['flags_raw']     = getid3_lib::BigEndian2Int(substr($atom_data,  1, 3));
1630                      $atom_structure['entry_count']   = getid3_lib::BigEndian2Int(substr($atom_data,  4, 4));
1631                      $keys_atom_offset = 8;
1632                      for ($i = 1; $i <= $atom_structure['entry_count']; $i++) {
1633                          $atom_structure['keys'][$i]['key_size']      = getid3_lib::BigEndian2Int(substr($atom_data, $keys_atom_offset + 0, 4));
1634                          $atom_structure['keys'][$i]['key_namespace'] =                           substr($atom_data, $keys_atom_offset + 4, 4);
1635                          $atom_structure['keys'][$i]['key_value']     =                           substr($atom_data, $keys_atom_offset + 8, $atom_structure['keys'][$i]['key_size'] - 8);
1636                          $keys_atom_offset += $atom_structure['keys'][$i]['key_size']; // key_size includes the 4+4 bytes for key_size and key_namespace
1637  
1638                          $info['quicktime']['temp_meta_key_names'][$i] = $atom_structure['keys'][$i]['key_value'];
1639                      }
1640                      break;
1641  
1642                  case 'uuid': // Atom holding 360fly spatial data??
1643                      /* code in this block by Paul Lewis 2019-Oct-31 */
1644                      /*    Sensor Timestamps need to be calculated using the recordings base time at ['quicktime']['moov']['subatoms'][0]['creation_time_unix']. */
1645                      $atom_structure['title'] = '360Fly Sensor Data';
1646  
1647                      //Get the UUID ID in first 16 bytes
1648                      $uuid_bytes_read = unpack('H8time_low/H4time_mid/H4time_hi/H4clock_seq_hi/H12clock_seq_low', substr($atom_data, 0, 16));
1649                      $atom_structure['uuid_field_id'] = print_r(implode('-', $uuid_bytes_read), true);
1650  
1651                      //Get the UUID HEADER data
1652                      $uuid_bytes_read = unpack('Sheader_size/Sheader_version/Stimescale/Shardware_version/x/x/x/x/x/x/x/x/x/x/x/x/x/x/x/x/', substr($atom_data, 16, 32));
1653                      $atom_structure['uuid_header'] = json_encode($uuid_bytes_read, true);
1654  
1655                      $start_byte = 48;
1656                      $atom_SENSOR_data = substr($atom_data, $start_byte);
1657                      $atom_structure['sensor_data']['data_type'] = array(
1658                              'fusion_count'   => 0,       // ID 250
1659                              'fusion_data'    => array(),
1660                              'accel_count'    => 0,       // ID 1
1661                              'accel_data'     => array(),
1662                              'gyro_count'     => 0,       // ID 2
1663                              'gyro_data'      => array(),
1664                              'magno_count'    => 0,       // ID 3
1665                              'magno_data'     => array(),
1666                              'gps_count'      => 0,       // ID 5
1667                              'gps_data'       => array(),
1668                              'rotation_count' => 0,       // ID 6
1669                              'rotation_data'  => array(),
1670                              'unknown_count'  => 0,       // ID ??
1671                              'unknown_data'   => array(),
1672                              'debug_list'     => '',      // Used to debug variables stored as comma delimited strings
1673                      );
1674                      $debug_structure['debug_items'] = array();
1675                      // Can start loop here to decode all sensor data in 32 Byte chunks:
1676                      foreach (str_split($atom_SENSOR_data, 32) as $sensor_key => $sensor_data) {
1677                          // This gets me a data_type code to work out what data is in the next 31 bytes.
1678                          $sensor_data_type = substr($sensor_data, 0, 1);
1679                          $sensor_data_content = substr($sensor_data, 1);
1680                          $uuid_bytes_read = unpack('C*', $sensor_data_type);
1681                          $sensor_data_array = array();
1682                          switch ($uuid_bytes_read[1]) {
1683                              case 250:
1684                                  $atom_structure['sensor_data']['data_type']['fusion_count']++;
1685                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Gyaw/Gpitch/Groll/x*', $sensor_data_content);
1686                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1687                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1688                                  $sensor_data_array['yaw']       = $uuid_bytes_read['yaw'];
1689                                  $sensor_data_array['pitch']     = $uuid_bytes_read['pitch'];
1690                                  $sensor_data_array['roll']      = $uuid_bytes_read['roll'];
1691                                  array_push($atom_structure['sensor_data']['data_type']['fusion_data'], $sensor_data_array);
1692                                  break;
1693                              case 1:
1694                                  $atom_structure['sensor_data']['data_type']['accel_count']++;
1695                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Gyaw/Gpitch/Groll/x*', $sensor_data_content);
1696                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1697                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1698                                  $sensor_data_array['yaw']       = $uuid_bytes_read['yaw'];
1699                                  $sensor_data_array['pitch']     = $uuid_bytes_read['pitch'];
1700                                  $sensor_data_array['roll']      = $uuid_bytes_read['roll'];
1701                                  array_push($atom_structure['sensor_data']['data_type']['accel_data'], $sensor_data_array);
1702                                  break;
1703                              case 2:
1704                                  $atom_structure['sensor_data']['data_type']['gyro_count']++;
1705                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Gyaw/Gpitch/Groll/x*', $sensor_data_content);
1706                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1707                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1708                                  $sensor_data_array['yaw']       = $uuid_bytes_read['yaw'];
1709                                  $sensor_data_array['pitch']     = $uuid_bytes_read['pitch'];
1710                                  $sensor_data_array['roll']      = $uuid_bytes_read['roll'];
1711                                  array_push($atom_structure['sensor_data']['data_type']['gyro_data'], $sensor_data_array);
1712                                  break;
1713                              case 3:
1714                                  $atom_structure['sensor_data']['data_type']['magno_count']++;
1715                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Gmagx/Gmagy/Gmagz/x*', $sensor_data_content);
1716                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1717                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1718                                  $sensor_data_array['magx']      = $uuid_bytes_read['magx'];
1719                                  $sensor_data_array['magy']      = $uuid_bytes_read['magy'];
1720                                  $sensor_data_array['magz']      = $uuid_bytes_read['magz'];
1721                                  array_push($atom_structure['sensor_data']['data_type']['magno_data'], $sensor_data_array);
1722                                  break;
1723                              case 5:
1724                                  $atom_structure['sensor_data']['data_type']['gps_count']++;
1725                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Glat/Glon/Galt/Gspeed/nbearing/nacc/x*', $sensor_data_content);
1726                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1727                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1728                                  $sensor_data_array['lat']       = $uuid_bytes_read['lat'];
1729                                  $sensor_data_array['lon']       = $uuid_bytes_read['lon'];
1730                                  $sensor_data_array['alt']       = $uuid_bytes_read['alt'];
1731                                  $sensor_data_array['speed']     = $uuid_bytes_read['speed'];
1732                                  $sensor_data_array['bearing']   = $uuid_bytes_read['bearing'];
1733                                  $sensor_data_array['acc']       = $uuid_bytes_read['acc'];
1734                                  //$sensor_data_array = print_r($uuid_bytes_read, true);
1735                                  array_push($atom_structure['sensor_data']['data_type']['gps_data'], $sensor_data_array);
1736                                  //array_push($debug_structure['debug_items'], $uuid_bytes_read['timestamp']);
1737                                  break;
1738                              case 6:
1739                                  $atom_structure['sensor_data']['data_type']['rotation_count']++;
1740                                  $uuid_bytes_read = unpack('cmode/Jtimestamp/Grotx/Groty/Grotz/x*', $sensor_data_content);
1741                                  $sensor_data_array['mode']      = $uuid_bytes_read['mode'];
1742                                  $sensor_data_array['timestamp'] = $uuid_bytes_read['timestamp'];
1743                                  $sensor_data_array['rotx']      = $uuid_bytes_read['rotx'];
1744                                  $sensor_data_array['roty']      = $uuid_bytes_read['roty'];
1745                                  $sensor_data_array['rotz']      = $uuid_bytes_read['rotz'];
1746                                  array_push($atom_structure['sensor_data']['data_type']['rotation_data'], $sensor_data_array);
1747                                  break;
1748                              default:
1749                                  $atom_structure['sensor_data']['data_type']['unknown_count']++;
1750                                  break;
1751                          }
1752                      }
1753  //                    if (isset($debug_structure['debug_items']) && count($debug_structure['debug_items']) > 0) {
1754  //                        $atom_structure['sensor_data']['data_type']['debug_list'] = implode(',', $debug_structure['debug_items']);
1755  //                    } else {
1756                          $atom_structure['sensor_data']['data_type']['debug_list'] = 'No debug items in list!';
1757  //                    }
1758                      break;
1759  
1760                  case 'gps ':
1761                      // https://dashcamtalk.com/forum/threads/script-to-extract-gps-data-from-novatek-mp4.20808/page-2#post-291730
1762                      // The 'gps ' contains simple look up table made up of 8byte rows, that point to the 'free' atoms that contains the actual GPS data.
1763                      // The first row is version/metadata/notsure, I skip that.
1764                      // The following rows consist of 4byte address (absolute) and 4byte size (0x1000), these point to the GPS data in the file.
1765  
1766                      $GPS_rowsize = 8; // 4 bytes for offset, 4 bytes for size
1767                      if (strlen($atom_data) > 0) {
1768                          if ((strlen($atom_data) % $GPS_rowsize) == 0) {
1769                              $atom_structure['gps_toc'] = array();
1770                              foreach (str_split($atom_data, $GPS_rowsize) as $counter => $datapair) {
1771                                  $atom_structure['gps_toc'][] = unpack('Noffset/Nsize', substr($atom_data, $counter * $GPS_rowsize, $GPS_rowsize));
1772                              }
1773  
1774                              $atom_structure['gps_entries'] = array();
1775                              $previous_offset = $this->ftell();
1776                              foreach ($atom_structure['gps_toc'] as $key => $gps_pointer) {
1777                                  if ($key == 0) {
1778                                      // "The first row is version/metadata/notsure, I skip that."
1779                                      continue;
1780                                  }
1781                                  $this->fseek($gps_pointer['offset']);
1782                                  $GPS_free_data = $this->fread($gps_pointer['size']);
1783  
1784                                  /*
1785                                  // 2017-05-10: I see some of the data, notably the Hour-Minute-Second, but cannot reconcile the rest of the data. However, the NMEA "GPRMC" line is there and relatively easy to parse, so I'm using that instead
1786  
1787                                  // https://dashcamtalk.com/forum/threads/script-to-extract-gps-data-from-novatek-mp4.20808/page-2#post-291730
1788                                  // The structure of the GPS data atom (the 'free' atoms mentioned above) is following:
1789                                  // hour,minute,second,year,month,day,active,latitude_b,longitude_b,unknown2,latitude,longitude,speed = struct.unpack_from('<IIIIIIssssfff',data, 48)
1790                                  // For those unfamiliar with python struct:
1791                                  // I = int
1792                                  // s = is string (size 1, in this case)
1793                                  // f = float
1794  
1795                                  //$atom_structure['gps_entries'][$key] = unpack('Vhour/Vminute/Vsecond/Vyear/Vmonth/Vday/Vactive/Vlatitude_b/Vlongitude_b/Vunknown2/flatitude/flongitude/fspeed', substr($GPS_free_data, 48));
1796                                  */
1797  
1798                                  // $GPRMC,081836,A,3751.65,S,14507.36,E,000.0,360.0,130998,011.3,E*62
1799                                  // $GPRMC,183731,A,3907.482,N,12102.436,W,000.0,360.0,080301,015.5,E*67
1800                                  // $GPRMC,002454,A,3553.5295,N,13938.6570,E,0.0,43.1,180700,7.1,W,A*3F
1801                                  // $GPRMC,094347.000,A,5342.0061,N,00737.9908,W,0.01,156.75,140217,,,A*7D
1802                                  if (preg_match('#\\$GPRMC,([0-9\\.]*),([AV]),([0-9\\.]*),([NS]),([0-9\\.]*),([EW]),([0-9\\.]*),([0-9\\.]*),([0-9]*),([0-9\\.]*),([EW]?)(,[A])?(\\*[0-9A-F]{2})#', $GPS_free_data, $matches)) {
1803                                      $GPS_this_GPRMC = array();
1804                                      $GPS_this_GPRMC_raw = array();
1805                                      list(
1806                                          $GPS_this_GPRMC_raw['gprmc'],
1807                                          $GPS_this_GPRMC_raw['timestamp'],
1808                                          $GPS_this_GPRMC_raw['status'],
1809                                          $GPS_this_GPRMC_raw['latitude'],
1810                                          $GPS_this_GPRMC_raw['latitude_direction'],
1811                                          $GPS_this_GPRMC_raw['longitude'],
1812                                          $GPS_this_GPRMC_raw['longitude_direction'],
1813                                          $GPS_this_GPRMC_raw['knots'],
1814                                          $GPS_this_GPRMC_raw['angle'],
1815                                          $GPS_this_GPRMC_raw['datestamp'],
1816                                          $GPS_this_GPRMC_raw['variation'],
1817                                          $GPS_this_GPRMC_raw['variation_direction'],
1818                                          $dummy,
1819                                          $GPS_this_GPRMC_raw['checksum'],
1820                                      ) = $matches;
1821                                      $GPS_this_GPRMC['raw'] = $GPS_this_GPRMC_raw;
1822  
1823                                      $hour   = substr($GPS_this_GPRMC['raw']['timestamp'], 0, 2);
1824                                      $minute = substr($GPS_this_GPRMC['raw']['timestamp'], 2, 2);
1825                                      $second = substr($GPS_this_GPRMC['raw']['timestamp'], 4, 2);
1826                                      $ms     = substr($GPS_this_GPRMC['raw']['timestamp'], 6);    // may contain decimal seconds
1827                                      $day    = substr($GPS_this_GPRMC['raw']['datestamp'], 0, 2);
1828                                      $month  = substr($GPS_this_GPRMC['raw']['datestamp'], 2, 2);
1829                                      $year   = (int) substr($GPS_this_GPRMC['raw']['datestamp'], 4, 2);
1830                                      $year += (($year > 90) ? 1900 : 2000); // complete lack of foresight: datestamps are stored with 2-digit years, take best guess
1831                                      $GPS_this_GPRMC['timestamp'] = $year.'-'.$month.'-'.$day.' '.$hour.':'.$minute.':'.$second.$ms;
1832  
1833                                      $GPS_this_GPRMC['active'] = ($GPS_this_GPRMC['raw']['status'] == 'A'); // A=Active,V=Void
1834  
1835                                      foreach (array('latitude','longitude') as $latlon) {
1836                                          preg_match('#^([0-9]{1,3})([0-9]{2}\\.[0-9]+)$#', $GPS_this_GPRMC['raw'][$latlon], $matches);
1837                                          list($dummy, $deg, $min) = $matches;
1838                                          $GPS_this_GPRMC[$latlon] = $deg + ($min / 60);
1839                                      }
1840                                      $GPS_this_GPRMC['latitude']  *= (($GPS_this_GPRMC['raw']['latitude_direction']  == 'S') ? -1 : 1);
1841                                      $GPS_this_GPRMC['longitude'] *= (($GPS_this_GPRMC['raw']['longitude_direction'] == 'W') ? -1 : 1);
1842  
1843                                      $GPS_this_GPRMC['heading']    = $GPS_this_GPRMC['raw']['angle'];
1844                                      $GPS_this_GPRMC['speed_knot'] = $GPS_this_GPRMC['raw']['knots'];
1845                                      $GPS_this_GPRMC['speed_kmh']  = $GPS_this_GPRMC['raw']['knots'] * 1.852;
1846                                      if ($GPS_this_GPRMC['raw']['variation']) {
1847                                          $GPS_this_GPRMC['variation']  = $GPS_this_GPRMC['raw']['variation'];
1848                                          $GPS_this_GPRMC['variation'] *= (($GPS_this_GPRMC['raw']['variation_direction'] == 'W') ? -1 : 1);
1849                                      }
1850  
1851                                      $atom_structure['gps_entries'][$key] = $GPS_this_GPRMC;
1852  
1853                                      @$info['quicktime']['gps_track'][$GPS_this_GPRMC['timestamp']] = array(
1854                                          'latitude'  => (float) $GPS_this_GPRMC['latitude'],
1855                                          'longitude' => (float) $GPS_this_GPRMC['longitude'],
1856                                          'speed_kmh' => (float) $GPS_this_GPRMC['speed_kmh'],
1857                                          'heading'   => (float) $GPS_this_GPRMC['heading'],
1858                                      );
1859  
1860                                  } else {
1861                                      $this->warning('Unhandled GPS format in "free" atom at offset '.$gps_pointer['offset']);
1862                                  }
1863                              }
1864                              $this->fseek($previous_offset);
1865  
1866                          } else {
1867                              $this->warning('QuickTime atom "'.$atomname.'" is not mod-8 bytes long ('.$atomsize.' bytes) at offset '.$baseoffset);
1868                          }
1869                      } else {
1870                          $this->warning('QuickTime atom "'.$atomname.'" is zero bytes long at offset '.$baseoffset);
1871                      }
1872                      break;
1873  
1874                  case 'loci':// 3GP location (El Loco)
1875                      $loffset = 0;
1876                      $info['quicktime']['comments']['gps_flags']     = array(  getid3_lib::BigEndian2Int(substr($atom_data, 0, 4)));
1877                      $info['quicktime']['comments']['gps_lang']      = array(  getid3_lib::BigEndian2Int(substr($atom_data, 4, 2)));
1878                      $info['quicktime']['comments']['gps_location']  = array(          $this->LociString(substr($atom_data, 6), $loffset));
1879                      $loci_data = substr($atom_data, 6 + $loffset);
1880                      $info['quicktime']['comments']['gps_role']      = array(  getid3_lib::BigEndian2Int(substr($loci_data, 0, 1)));
1881                      $info['quicktime']['comments']['gps_longitude'] = array(getid3_lib::FixedPoint16_16(substr($loci_data, 1, 4)));
1882                      $info['quicktime']['comments']['gps_latitude']  = array(getid3_lib::FixedPoint16_16(substr($loci_data, 5, 4)));
1883                      $info['quicktime']['comments']['gps_altitude']  = array(getid3_lib::FixedPoint16_16(substr($loci_data, 9, 4)));
1884                      $info['quicktime']['comments']['gps_body']      = array(          $this->LociString(substr($loci_data, 13           ), $loffset));
1885                      $info['quicktime']['comments']['gps_notes']     = array(          $this->LociString(substr($loci_data, 13 + $loffset), $loffset));
1886                      break;
1887  
1888                  case 'chpl': // CHaPter List
1889                      // https://www.adobe.com/content/dam/Adobe/en/devnet/flv/pdfs/video_file_format_spec_v10.pdf
1890                      $chpl_version = getid3_lib::BigEndian2Int(substr($atom_data, 4, 1)); // Expected to be 0
1891                      $chpl_flags   = getid3_lib::BigEndian2Int(substr($atom_data, 5, 3)); // Reserved, set to 0
1892                      $chpl_count   = getid3_lib::BigEndian2Int(substr($atom_data, 8, 1));
1893                      $chpl_offset = 9;
1894                      for ($i = 0; $i < $chpl_count; $i++) {
1895                          if (($chpl_offset + 9) >= strlen($atom_data)) {
1896                              $this->warning('QuickTime chapter '.$i.' extends beyond end of "chpl" atom');
1897                              break;
1898                          }
1899                          $info['quicktime']['chapters'][$i]['timestamp'] = getid3_lib::BigEndian2Int(substr($atom_data, $chpl_offset, 8)) / 10000000; // timestamps are stored as 100-nanosecond units
1900                          $chpl_offset += 8;
1901                          $chpl_title_size = getid3_lib::BigEndian2Int(substr($atom_data, $chpl_offset, 1));
1902                          $chpl_offset += 1;
1903                          $info['quicktime']['chapters'][$i]['title']     =                           substr($atom_data, $chpl_offset, $chpl_title_size);
1904                          $chpl_offset += $chpl_title_size;
1905                      }
1906                      break;
1907  
1908                  case 'FIRM': // FIRMware version(?), seen on GoPro Hero4
1909                      $info['quicktime']['camera']['firmware'] = $atom_data;
1910                      break;
1911  
1912                  case 'CAME': // FIRMware version(?), seen on GoPro Hero4
1913                      $info['quicktime']['camera']['serial_hash'] = unpack('H*', $atom_data);
1914                      break;
1915  
1916                  case 'dscp':
1917                  case 'rcif':
1918                      // https://www.getid3.org/phpBB3/viewtopic.php?t=1908
1919                      if (substr($atom_data, 0, 7) == "\x00\x00\x00\x00\x55\xC4".'{') {
1920                          if ($json_decoded = @json_decode(rtrim(substr($atom_data, 6), "\x00"), true)) {
1921                              $info['quicktime']['camera'][$atomname] = $json_decoded;
1922                              if (($atomname == 'rcif') && isset($info['quicktime']['camera']['rcif']['wxcamera']['rotate'])) {
1923                                  $info['video']['rotate'] = $info['quicktime']['video']['rotate'] = $info['quicktime']['camera']['rcif']['wxcamera']['rotate'];
1924                              }
1925                          } else {
1926                              $this->warning('Failed to JSON decode atom "'.$atomname.'"');
1927                              $atom_structure['data'] = $atom_data;
1928                          }
1929                          unset($json_decoded);
1930                      } else {
1931                          $this->warning('Expecting 55 C4 7B at start of atom "'.$atomname.'", found '.getid3_lib::PrintHexBytes(substr($atom_data, 4, 3)).' instead');
1932                          $atom_structure['data'] = $atom_data;
1933                      }
1934                      break;
1935  
1936                  case 'frea':
1937                      // https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Kodak.html#frea
1938                      // may contain "scra" (PreviewImage) and/or "thma" (ThumbnailImage)
1939                      $atom_structure['subatoms'] = $this->QuicktimeParseContainerAtom($atom_data, $baseoffset + 4, $atomHierarchy, $ParseAllPossibleAtoms);
1940                      break;
1941                  case 'tima': // subatom to "frea"
1942                      // no idea what this does, the one sample file I've seen has a value of 0x00000027
1943                      $atom_structure['data'] = $atom_data;
1944                      break;
1945                  case 'ver ': // subatom to "frea"
1946                      // some kind of version number, the one sample file I've seen has a value of "3.00.073"
1947                      $atom_structure['data'] = $atom_data;
1948                      break;
1949                  case 'thma': // subatom to "frea" -- "ThumbnailImage"
1950                      // https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Kodak.html#frea
1951                      if (strlen($atom_data) > 0) {
1952                          $info['quicktime']['comments']['picture'][] = array('data'=>$atom_data, 'image_mime'=>'image/jpeg');
1953                      }
1954                      break;
1955                  case 'scra': // subatom to "frea" -- "PreviewImage"
1956                      // https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Kodak.html#frea
1957                      // but the only sample file I've seen has no useful data here
1958                      if (strlen($atom_data) > 0) {
1959                          $info['quicktime']['comments']['picture'][] = array('data'=>$atom_data, 'image_mime'=>'image/jpeg');
1960                      }
1961                      break;
1962  
1963  
1964                  default:
1965                      $this->warning('Unknown QuickTime atom type: "'.preg_replace('#[^a-zA-Z0-9 _\\-]#', '?', $atomname).'" ('.trim(getid3_lib::PrintHexBytes($atomname)).'), '.$atomsize.' bytes at offset '.$baseoffset);
1966                      $atom_structure['data'] = $atom_data;
1967                      break;
1968              }
1969          }
1970          array_pop($atomHierarchy);
1971          return $atom_structure;
1972      }
1973  
1974      /**
1975       * @param string $atom_data
1976       * @param int    $baseoffset
1977       * @param array  $atomHierarchy
1978       * @param bool   $ParseAllPossibleAtoms
1979       *
1980       * @return array|false
1981       */
1982  	public function QuicktimeParseContainerAtom($atom_data, $baseoffset, &$atomHierarchy, $ParseAllPossibleAtoms) {
1983          $atom_structure  = false;
1984          $subatomoffset  = 0;
1985          $subatomcounter = 0;
1986          if ((strlen($atom_data) == 4) && (getid3_lib::BigEndian2Int($atom_data) == 0x00000000)) {
1987              return false;
1988          }
1989          while ($subatomoffset < strlen($atom_data)) {
1990              $subatomsize = getid3_lib::BigEndian2Int(substr($atom_data, $subatomoffset + 0, 4));
1991              $subatomname =                           substr($atom_data, $subatomoffset + 4, 4);
1992              $subatomdata =                           substr($atom_data, $subatomoffset + 8, $subatomsize - 8);
1993              if ($subatomsize == 0) {
1994                  // Furthermore, for historical reasons the list of atoms is optionally
1995                  // terminated by a 32-bit integer set to 0. If you are writing a program
1996                  // to read user data atoms, you should allow for the terminating 0.
1997                  if (strlen($atom_data) > 12) {
1998                      $subatomoffset += 4;
1999                      continue;
2000                  }
2001                  return $atom_structure;
2002              }
2003              $atom_structure[$subatomcounter++] = $this->QuicktimeParseAtom($subatomname, $subatomsize, $subatomdata, $baseoffset + $subatomoffset, $atomHierarchy, $ParseAllPossibleAtoms);
2004              $subatomoffset += $subatomsize;
2005          }
2006          return $atom_structure;
2007      }
2008  
2009      /**
2010       * @param string $data
2011       * @param int    $offset
2012       *
2013       * @return int
2014       */
2015  	public function quicktime_read_mp4_descr_length($data, &$offset) {
2016          // http://libquicktime.sourcearchive.com/documentation/2:1.0.2plus-pdebian-2build1/esds_8c-source.html
2017          $num_bytes = 0;
2018          $length    = 0;
2019          do {
2020              $b = ord(substr($data, $offset++, 1));
2021              $length = ($length << 7) | ($b & 0x7F);
2022          } while (($b & 0x80) && ($num_bytes++ < 4));
2023          return $length;
2024      }
2025  
2026      /**
2027       * @param int $languageid
2028       *
2029       * @return string
2030       */
2031  	public function QuicktimeLanguageLookup($languageid) {
2032          // http://developer.apple.com/library/mac/#documentation/QuickTime/QTFF/QTFFChap4/qtff4.html#//apple_ref/doc/uid/TP40000939-CH206-34353
2033          static $QuicktimeLanguageLookup = array();
2034          if (empty($QuicktimeLanguageLookup)) {
2035              $QuicktimeLanguageLookup[0]     = 'English';
2036              $QuicktimeLanguageLookup[1]     = 'French';
2037              $QuicktimeLanguageLookup[2]     = 'German';
2038              $QuicktimeLanguageLookup[3]     = 'Italian';
2039              $QuicktimeLanguageLookup[4]     = 'Dutch';
2040              $QuicktimeLanguageLookup[5]     = 'Swedish';
2041              $QuicktimeLanguageLookup[6]     = 'Spanish';
2042              $QuicktimeLanguageLookup[7]     = 'Danish';
2043              $QuicktimeLanguageLookup[8]     = 'Portuguese';
2044              $QuicktimeLanguageLookup[9]     = 'Norwegian';
2045              $QuicktimeLanguageLookup[10]    = 'Hebrew';
2046              $QuicktimeLanguageLookup[11]    = 'Japanese';
2047              $QuicktimeLanguageLookup[12]    = 'Arabic';
2048              $QuicktimeLanguageLookup[13]    = 'Finnish';
2049              $QuicktimeLanguageLookup[14]    = 'Greek';
2050              $QuicktimeLanguageLookup[15]    = 'Icelandic';
2051              $QuicktimeLanguageLookup[16]    = 'Maltese';
2052              $QuicktimeLanguageLookup[17]    = 'Turkish';
2053              $QuicktimeLanguageLookup[18]    = 'Croatian';
2054              $QuicktimeLanguageLookup[19]    = 'Chinese (Traditional)';
2055              $QuicktimeLanguageLookup[20]    = 'Urdu';
2056              $QuicktimeLanguageLookup[21]    = 'Hindi';
2057              $QuicktimeLanguageLookup[22]    = 'Thai';
2058              $QuicktimeLanguageLookup[23]    = 'Korean';
2059              $QuicktimeLanguageLookup[24]    = 'Lithuanian';
2060              $QuicktimeLanguageLookup[25]    = 'Polish';
2061              $QuicktimeLanguageLookup[26]    = 'Hungarian';
2062              $QuicktimeLanguageLookup[27]    = 'Estonian';
2063              $QuicktimeLanguageLookup[28]    = 'Lettish';
2064              $QuicktimeLanguageLookup[28]    = 'Latvian';
2065              $QuicktimeLanguageLookup[29]    = 'Saamisk';
2066              $QuicktimeLanguageLookup[29]    = 'Lappish';
2067              $QuicktimeLanguageLookup[30]    = 'Faeroese';
2068              $QuicktimeLanguageLookup[31]    = 'Farsi';
2069              $QuicktimeLanguageLookup[31]    = 'Persian';
2070              $QuicktimeLanguageLookup[32]    = 'Russian';
2071              $QuicktimeLanguageLookup[33]    = 'Chinese (Simplified)';
2072              $QuicktimeLanguageLookup[34]    = 'Flemish';
2073              $QuicktimeLanguageLookup[35]    = 'Irish';
2074              $QuicktimeLanguageLookup[36]    = 'Albanian';
2075              $QuicktimeLanguageLookup[37]    = 'Romanian';
2076              $QuicktimeLanguageLookup[38]    = 'Czech';
2077              $QuicktimeLanguageLookup[39]    = 'Slovak';
2078              $QuicktimeLanguageLookup[40]    = 'Slovenian';
2079              $QuicktimeLanguageLookup[41]    = 'Yiddish';
2080              $QuicktimeLanguageLookup[42]    = 'Serbian';
2081              $QuicktimeLanguageLookup[43]    = 'Macedonian';
2082              $QuicktimeLanguageLookup[44]    = 'Bulgarian';
2083              $QuicktimeLanguageLookup[45]    = 'Ukrainian';
2084              $QuicktimeLanguageLookup[46]    = 'Byelorussian';
2085              $QuicktimeLanguageLookup[47]    = 'Uzbek';
2086              $QuicktimeLanguageLookup[48]    = 'Kazakh';
2087              $QuicktimeLanguageLookup[49]    = 'Azerbaijani';
2088              $QuicktimeLanguageLookup[50]    = 'AzerbaijanAr';
2089              $QuicktimeLanguageLookup[51]    = 'Armenian';
2090              $QuicktimeLanguageLookup[52]    = 'Georgian';
2091              $QuicktimeLanguageLookup[53]    = 'Moldavian';
2092              $QuicktimeLanguageLookup[54]    = 'Kirghiz';
2093              $QuicktimeLanguageLookup[55]    = 'Tajiki';
2094              $QuicktimeLanguageLookup[56]    = 'Turkmen';
2095              $QuicktimeLanguageLookup[57]    = 'Mongolian';
2096              $QuicktimeLanguageLookup[58]    = 'MongolianCyr';
2097              $QuicktimeLanguageLookup[59]    = 'Pashto';
2098              $QuicktimeLanguageLookup[60]    = 'Kurdish';
2099              $QuicktimeLanguageLookup[61]    = 'Kashmiri';
2100              $QuicktimeLanguageLookup[62]    = 'Sindhi';
2101              $QuicktimeLanguageLookup[63]    = 'Tibetan';
2102              $QuicktimeLanguageLookup[64]    = 'Nepali';
2103              $QuicktimeLanguageLookup[65]    = 'Sanskrit';
2104              $QuicktimeLanguageLookup[66]    = 'Marathi';
2105              $QuicktimeLanguageLookup[67]    = 'Bengali';
2106              $QuicktimeLanguageLookup[68]    = 'Assamese';
2107              $QuicktimeLanguageLookup[69]    = 'Gujarati';
2108              $QuicktimeLanguageLookup[70]    = 'Punjabi';
2109              $QuicktimeLanguageLookup[71]    = 'Oriya';
2110              $QuicktimeLanguageLookup[72]    = 'Malayalam';
2111              $QuicktimeLanguageLookup[73]    = 'Kannada';
2112              $QuicktimeLanguageLookup[74]    = 'Tamil';
2113              $QuicktimeLanguageLookup[75]    = 'Telugu';
2114              $QuicktimeLanguageLookup[76]    = 'Sinhalese';
2115              $QuicktimeLanguageLookup[77]    = 'Burmese';
2116              $QuicktimeLanguageLookup[78]    = 'Khmer';
2117              $QuicktimeLanguageLookup[79]    = 'Lao';
2118              $QuicktimeLanguageLookup[80]    = 'Vietnamese';
2119              $QuicktimeLanguageLookup[81]    = 'Indonesian';
2120              $QuicktimeLanguageLookup[82]    = 'Tagalog';
2121              $QuicktimeLanguageLookup[83]    = 'MalayRoman';
2122              $QuicktimeLanguageLookup[84]    = 'MalayArabic';
2123              $QuicktimeLanguageLookup[85]    = 'Amharic';
2124              $QuicktimeLanguageLookup[86]    = 'Tigrinya';
2125              $QuicktimeLanguageLookup[87]    = 'Galla';
2126              $QuicktimeLanguageLookup[87]    = 'Oromo';
2127              $QuicktimeLanguageLookup[88]    = 'Somali';
2128              $QuicktimeLanguageLookup[89]    = 'Swahili';
2129              $QuicktimeLanguageLookup[90]    = 'Ruanda';
2130              $QuicktimeLanguageLookup[91]    = 'Rundi';
2131              $QuicktimeLanguageLookup[92]    = 'Chewa';
2132              $QuicktimeLanguageLookup[93]    = 'Malagasy';
2133              $QuicktimeLanguageLookup[94]    = 'Esperanto';
2134              $QuicktimeLanguageLookup[128]   = 'Welsh';
2135              $QuicktimeLanguageLookup[129]   = 'Basque';
2136              $QuicktimeLanguageLookup[130]   = 'Catalan';
2137              $QuicktimeLanguageLookup[131]   = 'Latin';
2138              $QuicktimeLanguageLookup[132]   = 'Quechua';
2139              $QuicktimeLanguageLookup[133]   = 'Guarani';
2140              $QuicktimeLanguageLookup[134]   = 'Aymara';
2141              $QuicktimeLanguageLookup[135]   = 'Tatar';
2142              $QuicktimeLanguageLookup[136]   = 'Uighur';
2143              $QuicktimeLanguageLookup[137]   = 'Dzongkha';
2144              $QuicktimeLanguageLookup[138]   = 'JavaneseRom';
2145              $QuicktimeLanguageLookup[32767] = 'Unspecified';
2146          }
2147          if (($languageid > 138) && ($languageid < 32767)) {
2148              /*
2149              ISO Language Codes - http://www.loc.gov/standards/iso639-2/php/code_list.php
2150              Because the language codes specified by ISO 639-2/T are three characters long, they must be packed to fit into a 16-bit field.
2151              The packing algorithm must map each of the three characters, which are always lowercase, into a 5-bit integer and then concatenate
2152              these integers into the least significant 15 bits of a 16-bit integer, leaving the 16-bit integer's most significant bit set to zero.
2153  
2154              One algorithm for performing this packing is to treat each ISO character as a 16-bit integer. Subtract 0x60 from the first character
2155              and multiply by 2^10 (0x400), subtract 0x60 from the second character and multiply by 2^5 (0x20), subtract 0x60 from the third character,
2156              and add the three 16-bit values. This will result in a single 16-bit value with the three codes correctly packed into the 15 least
2157              significant bits and the most significant bit set to zero.
2158              */
2159              $iso_language_id  = '';
2160              $iso_language_id .= chr((($languageid & 0x7C00) >> 10) + 0x60);
2161              $iso_language_id .= chr((($languageid & 0x03E0) >>  5) + 0x60);
2162              $iso_language_id .= chr((($languageid & 0x001F) >>  0) + 0x60);
2163              $QuicktimeLanguageLookup[$languageid] = getid3_id3v2::LanguageLookup($iso_language_id);
2164          }
2165          return (isset($QuicktimeLanguageLookup[$languageid]) ? $QuicktimeLanguageLookup[$languageid] : 'invalid');
2166      }
2167  
2168      /**
2169       * @param string $codecid
2170       *
2171       * @return string
2172       */
2173  	public function QuicktimeVideoCodecLookup($codecid) {
2174          static $QuicktimeVideoCodecLookup = array();
2175          if (empty($QuicktimeVideoCodecLookup)) {
2176              $QuicktimeVideoCodecLookup['.SGI'] = 'SGI';
2177              $QuicktimeVideoCodecLookup['3IV1'] = '3ivx MPEG-4 v1';
2178              $QuicktimeVideoCodecLookup['3IV2'] = '3ivx MPEG-4 v2';
2179              $QuicktimeVideoCodecLookup['3IVX'] = '3ivx MPEG-4';
2180              $QuicktimeVideoCodecLookup['8BPS'] = 'Planar RGB';
2181              $QuicktimeVideoCodecLookup['avc1'] = 'H.264/MPEG-4 AVC';
2182              $QuicktimeVideoCodecLookup['avr '] = 'AVR-JPEG';
2183              $QuicktimeVideoCodecLookup['b16g'] = '16Gray';
2184              $QuicktimeVideoCodecLookup['b32a'] = '32AlphaGray';
2185              $QuicktimeVideoCodecLookup['b48r'] = '48RGB';
2186              $QuicktimeVideoCodecLookup['b64a'] = '64ARGB';
2187              $QuicktimeVideoCodecLookup['base'] = 'Base';
2188              $QuicktimeVideoCodecLookup['clou'] = 'Cloud';
2189              $QuicktimeVideoCodecLookup['cmyk'] = 'CMYK';
2190              $QuicktimeVideoCodecLookup['cvid'] = 'Cinepak';
2191              $QuicktimeVideoCodecLookup['dmb1'] = 'OpenDML JPEG';
2192              $QuicktimeVideoCodecLookup['dvc '] = 'DVC-NTSC';
2193              $QuicktimeVideoCodecLookup['dvcp'] = 'DVC-PAL';
2194              $QuicktimeVideoCodecLookup['dvpn'] = 'DVCPro-NTSC';
2195              $QuicktimeVideoCodecLookup['dvpp'] = 'DVCPro-PAL';
2196              $QuicktimeVideoCodecLookup['fire'] = 'Fire';
2197              $QuicktimeVideoCodecLookup['flic'] = 'FLC';
2198              $QuicktimeVideoCodecLookup['gif '] = 'GIF';
2199              $QuicktimeVideoCodecLookup['h261'] = 'H261';
2200              $QuicktimeVideoCodecLookup['h263'] = 'H263';
2201              $QuicktimeVideoCodecLookup['IV41'] = 'Indeo4';
2202              $QuicktimeVideoCodecLookup['jpeg'] = 'JPEG';
2203              $QuicktimeVideoCodecLookup['kpcd'] = 'PhotoCD';
2204              $QuicktimeVideoCodecLookup['mjpa'] = 'Motion JPEG-A';
2205              $QuicktimeVideoCodecLookup['mjpb'] = 'Motion JPEG-B';
2206              $QuicktimeVideoCodecLookup['msvc'] = 'Microsoft Video1';
2207              $QuicktimeVideoCodecLookup['myuv'] = 'MPEG YUV420';
2208              $QuicktimeVideoCodecLookup['path'] = 'Vector';
2209              $QuicktimeVideoCodecLookup['png '] = 'PNG';
2210              $QuicktimeVideoCodecLookup['PNTG'] = 'MacPaint';
2211              $QuicktimeVideoCodecLookup['qdgx'] = 'QuickDrawGX';
2212              $QuicktimeVideoCodecLookup['qdrw'] = 'QuickDraw';
2213              $QuicktimeVideoCodecLookup['raw '] = 'RAW';
2214              $QuicktimeVideoCodecLookup['ripl'] = 'WaterRipple';
2215              $QuicktimeVideoCodecLookup['rpza'] = 'Video';
2216              $QuicktimeVideoCodecLookup['smc '] = 'Graphics';
2217              $QuicktimeVideoCodecLookup['SVQ1'] = 'Sorenson Video 1';
2218              $QuicktimeVideoCodecLookup['SVQ1'] = 'Sorenson Video 3';
2219              $QuicktimeVideoCodecLookup['syv9'] = 'Sorenson YUV9';
2220              $QuicktimeVideoCodecLookup['tga '] = 'Targa';
2221              $QuicktimeVideoCodecLookup['tiff'] = 'TIFF';
2222              $QuicktimeVideoCodecLookup['WRAW'] = 'Windows RAW';
2223              $QuicktimeVideoCodecLookup['WRLE'] = 'BMP';
2224              $QuicktimeVideoCodecLookup['y420'] = 'YUV420';
2225              $QuicktimeVideoCodecLookup['yuv2'] = 'ComponentVideo';
2226              $QuicktimeVideoCodecLookup['yuvs'] = 'ComponentVideoUnsigned';
2227              $QuicktimeVideoCodecLookup['yuvu'] = 'ComponentVideoSigned';
2228          }
2229          return (isset($QuicktimeVideoCodecLookup[$codecid]) ? $QuicktimeVideoCodecLookup[$codecid] : '');
2230      }
2231  
2232      /**
2233       * @param string $codecid
2234       *
2235       * @return mixed|string
2236       */
2237  	public function QuicktimeAudioCodecLookup($codecid) {
2238          static $QuicktimeAudioCodecLookup = array();
2239          if (empty($QuicktimeAudioCodecLookup)) {
2240              $QuicktimeAudioCodecLookup['.mp3']          = 'Fraunhofer MPEG Layer-III alias';
2241              $QuicktimeAudioCodecLookup['aac ']          = 'ISO/IEC 14496-3 AAC';
2242              $QuicktimeAudioCodecLookup['agsm']          = 'Apple GSM 10:1';
2243              $QuicktimeAudioCodecLookup['alac']          = 'Apple Lossless Audio Codec';
2244              $QuicktimeAudioCodecLookup['alaw']          = 'A-law 2:1';
2245              $QuicktimeAudioCodecLookup['conv']          = 'Sample Format';
2246              $QuicktimeAudioCodecLookup['dvca']          = 'DV';
2247              $QuicktimeAudioCodecLookup['dvi ']          = 'DV 4:1';
2248              $QuicktimeAudioCodecLookup['eqal']          = 'Frequency Equalizer';
2249              $QuicktimeAudioCodecLookup['fl32']          = '32-bit Floating Point';
2250              $QuicktimeAudioCodecLookup['fl64']          = '64-bit Floating Point';
2251              $QuicktimeAudioCodecLookup['ima4']          = 'Interactive Multimedia Association 4:1';
2252              $QuicktimeAudioCodecLookup['in24']          = '24-bit Integer';
2253              $QuicktimeAudioCodecLookup['in32']          = '32-bit Integer';
2254              $QuicktimeAudioCodecLookup['lpc ']          = 'LPC 23:1';
2255              $QuicktimeAudioCodecLookup['MAC3']          = 'Macintosh Audio Compression/Expansion (MACE) 3:1';
2256              $QuicktimeAudioCodecLookup['MAC6']          = 'Macintosh Audio Compression/Expansion (MACE) 6:1';
2257              $QuicktimeAudioCodecLookup['mixb']          = '8-bit Mixer';
2258              $QuicktimeAudioCodecLookup['mixw']          = '16-bit Mixer';
2259              $QuicktimeAudioCodecLookup['mp4a']          = 'ISO/IEC 14496-3 AAC';
2260              $QuicktimeAudioCodecLookup['MS'."\x00\x02"] = 'Microsoft ADPCM';
2261              $QuicktimeAudioCodecLookup['MS'."\x00\x11"] = 'DV IMA';
2262              $QuicktimeAudioCodecLookup['MS'."\x00\x55"] = 'Fraunhofer MPEG Layer III';
2263              $QuicktimeAudioCodecLookup['NONE']          = 'No Encoding';
2264              $QuicktimeAudioCodecLookup['Qclp']          = 'Qualcomm PureVoice';
2265              $QuicktimeAudioCodecLookup['QDM2']          = 'QDesign Music 2';
2266              $QuicktimeAudioCodecLookup['QDMC']          = 'QDesign Music 1';
2267              $QuicktimeAudioCodecLookup['ratb']          = '8-bit Rate';
2268              $QuicktimeAudioCodecLookup['ratw']          = '16-bit Rate';
2269              $QuicktimeAudioCodecLookup['raw ']          = 'raw PCM';
2270              $QuicktimeAudioCodecLookup['sour']          = 'Sound Source';
2271              $QuicktimeAudioCodecLookup['sowt']          = 'signed/two\'s complement (Little Endian)';
2272              $QuicktimeAudioCodecLookup['str1']          = 'Iomega MPEG layer II';
2273              $QuicktimeAudioCodecLookup['str2']          = 'Iomega MPEG *layer II';
2274              $QuicktimeAudioCodecLookup['str3']          = 'Iomega MPEG **layer II';
2275              $QuicktimeAudioCodecLookup['str4']          = 'Iomega MPEG ***layer II';
2276              $QuicktimeAudioCodecLookup['twos']          = 'signed/two\'s complement (Big Endian)';
2277              $QuicktimeAudioCodecLookup['ulaw']          = 'mu-law 2:1';
2278          }
2279          return (isset($QuicktimeAudioCodecLookup[$codecid]) ? $QuicktimeAudioCodecLookup[$codecid] : '');
2280      }
2281  
2282      /**
2283       * @param string $compressionid
2284       *
2285       * @return string
2286       */
2287  	public function QuicktimeDCOMLookup($compressionid) {
2288          static $QuicktimeDCOMLookup = array();
2289          if (empty($QuicktimeDCOMLookup)) {
2290              $QuicktimeDCOMLookup['zlib'] = 'ZLib Deflate';
2291              $QuicktimeDCOMLookup['adec'] = 'Apple Compression';
2292          }
2293          return (isset($QuicktimeDCOMLookup[$compressionid]) ? $QuicktimeDCOMLookup[$compressionid] : '');
2294      }
2295  
2296      /**
2297       * @param int $colordepthid
2298       *
2299       * @return string
2300       */
2301  	public function QuicktimeColorNameLookup($colordepthid) {
2302          static $QuicktimeColorNameLookup = array();
2303          if (empty($QuicktimeColorNameLookup)) {
2304              $QuicktimeColorNameLookup[1]  = '2-color (monochrome)';
2305              $QuicktimeColorNameLookup[2]  = '4-color';
2306              $QuicktimeColorNameLookup[4]  = '16-color';
2307              $QuicktimeColorNameLookup[8]  = '256-color';
2308              $QuicktimeColorNameLookup[16] = 'thousands (16-bit color)';
2309              $QuicktimeColorNameLookup[24] = 'millions (24-bit color)';
2310              $QuicktimeColorNameLookup[32] = 'millions+ (32-bit color)';
2311              $QuicktimeColorNameLookup[33] = 'black & white';
2312              $QuicktimeColorNameLookup[34] = '4-gray';
2313              $QuicktimeColorNameLookup[36] = '16-gray';
2314              $QuicktimeColorNameLookup[40] = '256-gray';
2315          }
2316          return (isset($QuicktimeColorNameLookup[$colordepthid]) ? $QuicktimeColorNameLookup[$colordepthid] : 'invalid');
2317      }
2318  
2319      /**
2320       * @param int $stik
2321       *
2322       * @return string
2323       */
2324  	public function QuicktimeSTIKLookup($stik) {
2325          static $QuicktimeSTIKLookup = array();
2326          if (empty($QuicktimeSTIKLookup)) {
2327              $QuicktimeSTIKLookup[0]  = 'Movie';
2328              $QuicktimeSTIKLookup[1]  = 'Normal';
2329              $QuicktimeSTIKLookup[2]  = 'Audiobook';
2330              $QuicktimeSTIKLookup[5]  = 'Whacked Bookmark';
2331              $QuicktimeSTIKLookup[6]  = 'Music Video';
2332              $QuicktimeSTIKLookup[9]  = 'Short Film';
2333              $QuicktimeSTIKLookup[10] = 'TV Show';
2334              $QuicktimeSTIKLookup[11] = 'Booklet';
2335              $QuicktimeSTIKLookup[14] = 'Ringtone';
2336              $QuicktimeSTIKLookup[21] = 'Podcast';
2337          }
2338          return (isset($QuicktimeSTIKLookup[$stik]) ? $QuicktimeSTIKLookup[$stik] : 'invalid');
2339      }
2340  
2341      /**
2342       * @param int $audio_profile_id
2343       *
2344       * @return string
2345       */
2346  	public function QuicktimeIODSaudioProfileName($audio_profile_id) {
2347          static $QuicktimeIODSaudioProfileNameLookup = array();
2348          if (empty($QuicktimeIODSaudioProfileNameLookup)) {
2349              $QuicktimeIODSaudioProfileNameLookup = array(
2350                  0x00 => 'ISO Reserved (0x00)',
2351                  0x01 => 'Main Audio Profile @ Level 1',
2352                  0x02 => 'Main Audio Profile @ Level 2',
2353                  0x03 => 'Main Audio Profile @ Level 3',
2354                  0x04 => 'Main Audio Profile @ Level 4',
2355                  0x05 => 'Scalable Audio Profile @ Level 1',
2356                  0x06 => 'Scalable Audio Profile @ Level 2',
2357                  0x07 => 'Scalable Audio Profile @ Level 3',
2358                  0x08 => 'Scalable Audio Profile @ Level 4',
2359                  0x09 => 'Speech Audio Profile @ Level 1',
2360                  0x0A => 'Speech Audio Profile @ Level 2',
2361                  0x0B => 'Synthetic Audio Profile @ Level 1',
2362                  0x0C => 'Synthetic Audio Profile @ Level 2',
2363                  0x0D => 'Synthetic Audio Profile @ Level 3',
2364                  0x0E => 'High Quality Audio Profile @ Level 1',
2365                  0x0F => 'High Quality Audio Profile @ Level 2',
2366                  0x10 => 'High Quality Audio Profile @ Level 3',
2367                  0x11 => 'High Quality Audio Profile @ Level 4',
2368                  0x12 => 'High Quality Audio Profile @ Level 5',
2369                  0x13 => 'High Quality Audio Profile @ Level 6',
2370                  0x14 => 'High Quality Audio Profile @ Level 7',
2371                  0x15 => 'High Quality Audio Profile @ Level 8',
2372                  0x16 => 'Low Delay Audio Profile @ Level 1',
2373                  0x17 => 'Low Delay Audio Profile @ Level 2',
2374                  0x18 => 'Low Delay Audio Profile @ Level 3',
2375                  0x19 => 'Low Delay Audio Profile @ Level 4',
2376                  0x1A => 'Low Delay Audio Profile @ Level 5',
2377                  0x1B => 'Low Delay Audio Profile @ Level 6',
2378                  0x1C => 'Low Delay Audio Profile @ Level 7',
2379                  0x1D => 'Low Delay Audio Profile @ Level 8',
2380                  0x1E => 'Natural Audio Profile @ Level 1',
2381                  0x1F => 'Natural Audio Profile @ Level 2',
2382                  0x20 => 'Natural Audio Profile @ Level 3',
2383                  0x21 => 'Natural Audio Profile @ Level 4',
2384                  0x22 => 'Mobile Audio Internetworking Profile @ Level 1',
2385                  0x23 => 'Mobile Audio Internetworking Profile @ Level 2',
2386                  0x24 => 'Mobile Audio Internetworking Profile @ Level 3',
2387                  0x25 => 'Mobile Audio Internetworking Profile @ Level 4',
2388                  0x26 => 'Mobile Audio Internetworking Profile @ Level 5',
2389                  0x27 => 'Mobile Audio Internetworking Profile @ Level 6',
2390                  0x28 => 'AAC Profile @ Level 1',
2391                  0x29 => 'AAC Profile @ Level 2',
2392                  0x2A => 'AAC Profile @ Level 4',
2393                  0x2B => 'AAC Profile @ Level 5',
2394                  0x2C => 'High Efficiency AAC Profile @ Level 2',
2395                  0x2D => 'High Efficiency AAC Profile @ Level 3',
2396                  0x2E => 'High Efficiency AAC Profile @ Level 4',
2397                  0x2F => 'High Efficiency AAC Profile @ Level 5',
2398                  0xFE => 'Not part of MPEG-4 audio profiles',
2399                  0xFF => 'No audio capability required',
2400              );
2401          }
2402          return (isset($QuicktimeIODSaudioProfileNameLookup[$audio_profile_id]) ? $QuicktimeIODSaudioProfileNameLookup[$audio_profile_id] : 'ISO Reserved / User Private');
2403      }
2404  
2405      /**
2406       * @param int $video_profile_id
2407       *
2408       * @return string
2409       */
2410  	public function QuicktimeIODSvideoProfileName($video_profile_id) {
2411          static $QuicktimeIODSvideoProfileNameLookup = array();
2412          if (empty($QuicktimeIODSvideoProfileNameLookup)) {
2413              $QuicktimeIODSvideoProfileNameLookup = array(
2414                  0x00 => 'Reserved (0x00) Profile',
2415                  0x01 => 'Simple Profile @ Level 1',
2416                  0x02 => 'Simple Profile @ Level 2',
2417                  0x03 => 'Simple Profile @ Level 3',
2418                  0x08 => 'Simple Profile @ Level 0',
2419                  0x10 => 'Simple Scalable Profile @ Level 0',
2420                  0x11 => 'Simple Scalable Profile @ Level 1',
2421                  0x12 => 'Simple Scalable Profile @ Level 2',
2422                  0x15 => 'AVC/H264 Profile',
2423                  0x21 => 'Core Profile @ Level 1',
2424                  0x22 => 'Core Profile @ Level 2',
2425                  0x32 => 'Main Profile @ Level 2',
2426                  0x33 => 'Main Profile @ Level 3',
2427                  0x34 => 'Main Profile @ Level 4',
2428                  0x42 => 'N-bit Profile @ Level 2',
2429                  0x51 => 'Scalable Texture Profile @ Level 1',
2430                  0x61 => 'Simple Face Animation Profile @ Level 1',
2431                  0x62 => 'Simple Face Animation Profile @ Level 2',
2432                  0x63 => 'Simple FBA Profile @ Level 1',
2433                  0x64 => 'Simple FBA Profile @ Level 2',
2434                  0x71 => 'Basic Animated Texture Profile @ Level 1',
2435                  0x72 => 'Basic Animated Texture Profile @ Level 2',
2436                  0x81 => 'Hybrid Profile @ Level 1',
2437                  0x82 => 'Hybrid Profile @ Level 2',
2438                  0x91 => 'Advanced Real Time Simple Profile @ Level 1',
2439                  0x92 => 'Advanced Real Time Simple Profile @ Level 2',
2440                  0x93 => 'Advanced Real Time Simple Profile @ Level 3',
2441                  0x94 => 'Advanced Real Time Simple Profile @ Level 4',
2442                  0xA1 => 'Core Scalable Profile @ Level1',
2443                  0xA2 => 'Core Scalable Profile @ Level2',
2444                  0xA3 => 'Core Scalable Profile @ Level3',
2445                  0xB1 => 'Advanced Coding Efficiency Profile @ Level 1',
2446                  0xB2 => 'Advanced Coding Efficiency Profile @ Level 2',
2447                  0xB3 => 'Advanced Coding Efficiency Profile @ Level 3',
2448                  0xB4 => 'Advanced Coding Efficiency Profile @ Level 4',
2449                  0xC1 => 'Advanced Core Profile @ Level 1',
2450                  0xC2 => 'Advanced Core Profile @ Level 2',
2451                  0xD1 => 'Advanced Scalable Texture @ Level1',
2452                  0xD2 => 'Advanced Scalable Texture @ Level2',
2453                  0xE1 => 'Simple Studio Profile @ Level 1',
2454                  0xE2 => 'Simple Studio Profile @ Level 2',
2455                  0xE3 => 'Simple Studio Profile @ Level 3',
2456                  0xE4 => 'Simple Studio Profile @ Level 4',
2457                  0xE5 => 'Core Studio Profile @ Level 1',
2458                  0xE6 => 'Core Studio Profile @ Level 2',
2459                  0xE7 => 'Core Studio Profile @ Level 3',
2460                  0xE8 => 'Core Studio Profile @ Level 4',
2461                  0xF0 => 'Advanced Simple Profile @ Level 0',
2462                  0xF1 => 'Advanced Simple Profile @ Level 1',
2463                  0xF2 => 'Advanced Simple Profile @ Level 2',
2464                  0xF3 => 'Advanced Simple Profile @ Level 3',
2465                  0xF4 => 'Advanced Simple Profile @ Level 4',
2466                  0xF5 => 'Advanced Simple Profile @ Level 5',
2467                  0xF7 => 'Advanced Simple Profile @ Level 3b',
2468                  0xF8 => 'Fine Granularity Scalable Profile @ Level 0',
2469                  0xF9 => 'Fine Granularity Scalable Profile @ Level 1',
2470                  0xFA => 'Fine Granularity Scalable Profile @ Level 2',
2471                  0xFB => 'Fine Granularity Scalable Profile @ Level 3',
2472                  0xFC => 'Fine Granularity Scalable Profile @ Level 4',
2473                  0xFD => 'Fine Granularity Scalable Profile @ Level 5',
2474                  0xFE => 'Not part of MPEG-4 Visual profiles',
2475                  0xFF => 'No visual capability required',
2476              );
2477          }
2478          return (isset($QuicktimeIODSvideoProfileNameLookup[$video_profile_id]) ? $QuicktimeIODSvideoProfileNameLookup[$video_profile_id] : 'ISO Reserved Profile');
2479      }
2480  
2481      /**
2482       * @param int $rtng
2483       *
2484       * @return string
2485       */
2486  	public function QuicktimeContentRatingLookup($rtng) {
2487          static $QuicktimeContentRatingLookup = array();
2488          if (empty($QuicktimeContentRatingLookup)) {
2489              $QuicktimeContentRatingLookup[0]  = 'None';
2490              $QuicktimeContentRatingLookup[2]  = 'Clean';
2491              $QuicktimeContentRatingLookup[4]  = 'Explicit';
2492          }
2493          return (isset($QuicktimeContentRatingLookup[$rtng]) ? $QuicktimeContentRatingLookup[$rtng] : 'invalid');
2494      }
2495  
2496      /**
2497       * @param int $akid
2498       *
2499       * @return string
2500       */
2501  	public function QuicktimeStoreAccountTypeLookup($akid) {
2502          static $QuicktimeStoreAccountTypeLookup = array();
2503          if (empty($QuicktimeStoreAccountTypeLookup)) {
2504              $QuicktimeStoreAccountTypeLookup[0] = 'iTunes';
2505              $QuicktimeStoreAccountTypeLookup[1] = 'AOL';
2506          }
2507          return (isset($QuicktimeStoreAccountTypeLookup[$akid]) ? $QuicktimeStoreAccountTypeLookup[$akid] : 'invalid');
2508      }
2509  
2510      /**
2511       * @param int $sfid
2512       *
2513       * @return string
2514       */
2515  	public function QuicktimeStoreFrontCodeLookup($sfid) {
2516          static $QuicktimeStoreFrontCodeLookup = array();
2517          if (empty($QuicktimeStoreFrontCodeLookup)) {
2518              $QuicktimeStoreFrontCodeLookup[143460] = 'Australia';
2519              $QuicktimeStoreFrontCodeLookup[143445] = 'Austria';
2520              $QuicktimeStoreFrontCodeLookup[143446] = 'Belgium';
2521              $QuicktimeStoreFrontCodeLookup[143455] = 'Canada';
2522              $QuicktimeStoreFrontCodeLookup[143458] = 'Denmark';
2523              $QuicktimeStoreFrontCodeLookup[143447] = 'Finland';
2524              $QuicktimeStoreFrontCodeLookup[143442] = 'France';
2525              $QuicktimeStoreFrontCodeLookup[143443] = 'Germany';
2526              $QuicktimeStoreFrontCodeLookup[143448] = 'Greece';
2527              $QuicktimeStoreFrontCodeLookup[143449] = 'Ireland';
2528              $QuicktimeStoreFrontCodeLookup[143450] = 'Italy';
2529              $QuicktimeStoreFrontCodeLookup[143462] = 'Japan';
2530              $QuicktimeStoreFrontCodeLookup[143451] = 'Luxembourg';
2531              $QuicktimeStoreFrontCodeLookup[143452] = 'Netherlands';
2532              $QuicktimeStoreFrontCodeLookup[143461] = 'New Zealand';
2533              $QuicktimeStoreFrontCodeLookup[143457] = 'Norway';
2534              $QuicktimeStoreFrontCodeLookup[143453] = 'Portugal';
2535              $QuicktimeStoreFrontCodeLookup[143454] = 'Spain';
2536              $QuicktimeStoreFrontCodeLookup[143456] = 'Sweden';
2537              $QuicktimeStoreFrontCodeLookup[143459] = 'Switzerland';
2538              $QuicktimeStoreFrontCodeLookup[143444] = 'United Kingdom';
2539              $QuicktimeStoreFrontCodeLookup[143441] = 'United States';
2540          }
2541          return (isset($QuicktimeStoreFrontCodeLookup[$sfid]) ? $QuicktimeStoreFrontCodeLookup[$sfid] : 'invalid');
2542      }
2543  
2544      /**
2545       * @param string $atom_data
2546       *
2547       * @return array
2548       */
2549  	public function QuicktimeParseNikonNCTG($atom_data) {
2550          // http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html#NCTG
2551          // Nikon-specific QuickTime tags found in the NCDT atom of MOV videos from some Nikon cameras such as the Coolpix S8000 and D5100
2552          // Data is stored as records of:
2553          // * 4 bytes record type
2554          // * 2 bytes size of data field type:
2555          //     0x0001 = flag   (size field *= 1-byte)
2556          //     0x0002 = char   (size field *= 1-byte)
2557          //     0x0003 = DWORD+ (size field *= 2-byte), values are stored CDAB
2558          //     0x0004 = QWORD+ (size field *= 4-byte), values are stored EFGHABCD
2559          //     0x0005 = float  (size field *= 8-byte), values are stored aaaabbbb where value is aaaa/bbbb; possibly multiple sets of values appended together
2560          //     0x0007 = bytes  (size field *= 1-byte), values are stored as ??????
2561          //     0x0008 = ?????  (size field *= 2-byte), values are stored as ??????
2562          // * 2 bytes data size field
2563          // * ? bytes data (string data may be null-padded; datestamp fields are in the format "2011:05:25 20:24:15")
2564          // all integers are stored BigEndian
2565  
2566          $NCTGtagName = array(
2567              0x00000001 => 'Make',
2568              0x00000002 => 'Model',
2569              0x00000003 => 'Software',
2570              0x00000011 => 'CreateDate',
2571              0x00000012 => 'DateTimeOriginal',
2572              0x00000013 => 'FrameCount',
2573              0x00000016 => 'FrameRate',
2574              0x00000022 => 'FrameWidth',
2575              0x00000023 => 'FrameHeight',
2576              0x00000032 => 'AudioChannels',
2577              0x00000033 => 'AudioBitsPerSample',
2578              0x00000034 => 'AudioSampleRate',
2579              0x02000001 => 'MakerNoteVersion',
2580              0x02000005 => 'WhiteBalance',
2581              0x0200000b => 'WhiteBalanceFineTune',
2582              0x0200001e => 'ColorSpace',
2583              0x02000023 => 'PictureControlData',
2584              0x02000024 => 'WorldTime',
2585              0x02000032 => 'UnknownInfo',
2586              0x02000083 => 'LensType',
2587              0x02000084 => 'Lens',
2588          );
2589  
2590          $offset = 0;
2591          $data = null;
2592          $datalength = strlen($atom_data);
2593          $parsed = array();
2594          while ($offset < $datalength) {
2595              $record_type       = getid3_lib::BigEndian2Int(substr($atom_data, $offset, 4));  $offset += 4;
2596              $data_size_type    = getid3_lib::BigEndian2Int(substr($atom_data, $offset, 2));  $offset += 2;
2597              $data_size         = getid3_lib::BigEndian2Int(substr($atom_data, $offset, 2));  $offset += 2;
2598              switch ($data_size_type) {
2599                  case 0x0001: // 0x0001 = flag   (size field *= 1-byte)
2600                      $data = getid3_lib::BigEndian2Int(substr($atom_data, $offset, $data_size * 1));
2601                      $offset += ($data_size * 1);
2602                      break;
2603                  case 0x0002: // 0x0002 = char   (size field *= 1-byte)
2604                      $data = substr($atom_data, $offset, $data_size * 1);
2605                      $offset += ($data_size * 1);
2606                      $data = rtrim($data, "\x00");
2607                      break;
2608                  case 0x0003: // 0x0003 = DWORD+ (size field *= 2-byte), values are stored CDAB
2609                      $data = '';
2610                      for ($i = $data_size - 1; $i >= 0; $i--) {
2611                          $data .= substr($atom_data, $offset + ($i * 2), 2);
2612                      }
2613                      $data = getid3_lib::BigEndian2Int($data);
2614                      $offset += ($data_size * 2);
2615                      break;
2616                  case 0x0004: // 0x0004 = QWORD+ (size field *= 4-byte), values are stored EFGHABCD
2617                      $data = '';
2618                      for ($i = $data_size - 1; $i >= 0; $i--) {
2619                          $data .= substr($atom_data, $offset + ($i * 4), 4);
2620                      }
2621                      $data = getid3_lib::BigEndian2Int($data);
2622                      $offset += ($data_size * 4);
2623                      break;
2624                  case 0x0005: // 0x0005 = float  (size field *= 8-byte), values are stored aaaabbbb where value is aaaa/bbbb; possibly multiple sets of values appended together
2625                      $data = array();
2626                      for ($i = 0; $i < $data_size; $i++) {
2627                          $numerator    = getid3_lib::BigEndian2Int(substr($atom_data, $offset + ($i * 8) + 0, 4));
2628                          $denomninator = getid3_lib::BigEndian2Int(substr($atom_data, $offset + ($i * 8) + 4, 4));
2629                          if ($denomninator == 0) {
2630                              $data[$i] = false;
2631                          } else {
2632                              $data[$i] = (double) $numerator / $denomninator;
2633                          }
2634                      }
2635                      $offset += (8 * $data_size);
2636                      if (count($data) == 1) {
2637                          $data = $data[0];
2638                      }
2639                      break;
2640                  case 0x0007: // 0x0007 = bytes  (size field *= 1-byte), values are stored as ??????
2641                      $data = substr($atom_data, $offset, $data_size * 1);
2642                      $offset += ($data_size * 1);
2643                      break;
2644                  case 0x0008: // 0x0008 = ?????  (size field *= 2-byte), values are stored as ??????
2645                      $data = substr($atom_data, $offset, $data_size * 2);
2646                      $offset += ($data_size * 2);
2647                      break;
2648                  default:
2649                      echo 'QuicktimeParseNikonNCTG()::unknown $data_size_type: '.$data_size_type.'<br>';
2650                      break 2;
2651              }
2652  
2653              switch ($record_type) {
2654                  case 0x00000011: // CreateDate
2655                  case 0x00000012: // DateTimeOriginal
2656                      $data = strtotime($data);
2657                      break;
2658                  case 0x0200001e: // ColorSpace
2659                      switch ($data) {
2660                          case 1:
2661                              $data = 'sRGB';
2662                              break;
2663                          case 2:
2664                              $data = 'Adobe RGB';
2665                              break;
2666                      }
2667                      break;
2668                  case 0x02000023: // PictureControlData
2669                      $PictureControlAdjust = array(0=>'default', 1=>'quick', 2=>'full');
2670                      $FilterEffect = array(0x80=>'off', 0x81=>'yellow', 0x82=>'orange',    0x83=>'red', 0x84=>'green',  0xff=>'n/a');
2671                      $ToningEffect = array(0x80=>'b&w', 0x81=>'sepia',  0x82=>'cyanotype', 0x83=>'red', 0x84=>'yellow', 0x85=>'green', 0x86=>'blue-green', 0x87=>'blue', 0x88=>'purple-blue', 0x89=>'red-purple', 0xff=>'n/a');
2672                      $data = array(
2673                          'PictureControlVersion'     =>                           substr($data,  0,  4),
2674                          'PictureControlName'        =>                     rtrim(substr($data,  4, 20), "\x00"),
2675                          'PictureControlBase'        =>                     rtrim(substr($data, 24, 20), "\x00"),
2676                          //'?'                       =>                           substr($data, 44,  4),
2677                          'PictureControlAdjust'      => $PictureControlAdjust[ord(substr($data, 48,  1))],
2678                          'PictureControlQuickAdjust' =>                       ord(substr($data, 49,  1)),
2679                          'Sharpness'                 =>                       ord(substr($data, 50,  1)),
2680                          'Contrast'                  =>                       ord(substr($data, 51,  1)),
2681                          'Brightness'                =>                       ord(substr($data, 52,  1)),
2682                          'Saturation'                =>                       ord(substr($data, 53,  1)),
2683                          'HueAdjustment'             =>                       ord(substr($data, 54,  1)),
2684                          'FilterEffect'              =>         $FilterEffect[ord(substr($data, 55,  1))],
2685                          'ToningEffect'              =>         $ToningEffect[ord(substr($data, 56,  1))],
2686                          'ToningSaturation'          =>                       ord(substr($data, 57,  1)),
2687                      );
2688                      break;
2689                  case 0x02000024: // WorldTime
2690                      // http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html#WorldTime
2691                      // timezone is stored as offset from GMT in minutes
2692                      $timezone = getid3_lib::BigEndian2Int(substr($data, 0, 2));
2693                      if ($timezone & 0x8000) {
2694                          $timezone = 0 - (0x10000 - $timezone);
2695                      }
2696                      $timezone /= 60;
2697  
2698                      $dst = (bool) getid3_lib::BigEndian2Int(substr($data, 2, 1));
2699                      switch (getid3_lib::BigEndian2Int(substr($data, 3, 1))) {
2700                          case 2:
2701                              $datedisplayformat = 'D/M/Y'; break;
2702                          case 1:
2703                              $datedisplayformat = 'M/D/Y'; break;
2704                          case 0:
2705                          default:
2706                              $datedisplayformat = 'Y/M/D'; break;
2707                      }
2708  
2709                      $data = array('timezone'=>floatval($timezone), 'dst'=>$dst, 'display'=>$datedisplayformat);
2710                      break;
2711                  case 0x02000083: // LensType
2712                      $data = array(
2713                          //'_'  => $data,
2714                          'mf' => (bool) ($data & 0x01),
2715                          'd'  => (bool) ($data & 0x02),
2716                          'g'  => (bool) ($data & 0x04),
2717                          'vr' => (bool) ($data & 0x08),
2718                      );
2719                      break;
2720              }
2721              $tag_name = (isset($NCTGtagName[$record_type]) ? $NCTGtagName[$record_type] : '0x'.str_pad(dechex($record_type), 8, '0', STR_PAD_LEFT));
2722              $parsed[$tag_name] = $data;
2723          }
2724          return $parsed;
2725      }
2726  
2727      /**
2728       * @param string $keyname
2729       * @param string|array $data
2730       * @param string $boxname
2731       *
2732       * @return bool
2733       */
2734  	public function CopyToAppropriateCommentsSection($keyname, $data, $boxname='') {
2735          static $handyatomtranslatorarray = array();
2736          if (empty($handyatomtranslatorarray)) {
2737              // http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
2738              // http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt
2739              // http://atomicparsley.sourceforge.net/mpeg-4files.html
2740              // https://code.google.com/p/mp4v2/wiki/iTunesMetadata
2741              $handyatomtranslatorarray["\xA9".'alb'] = 'album';               // iTunes 4.0
2742              $handyatomtranslatorarray["\xA9".'ART'] = 'artist';
2743              $handyatomtranslatorarray["\xA9".'art'] = 'artist';              // iTunes 4.0
2744              $handyatomtranslatorarray["\xA9".'aut'] = 'author';
2745              $handyatomtranslatorarray["\xA9".'cmt'] = 'comment';             // iTunes 4.0
2746              $handyatomtranslatorarray["\xA9".'com'] = 'comment';
2747              $handyatomtranslatorarray["\xA9".'cpy'] = 'copyright';
2748              $handyatomtranslatorarray["\xA9".'day'] = 'creation_date';       // iTunes 4.0
2749              $handyatomtranslatorarray["\xA9".'dir'] = 'director';
2750              $handyatomtranslatorarray["\xA9".'ed1'] = 'edit1';
2751              $handyatomtranslatorarray["\xA9".'ed2'] = 'edit2';
2752              $handyatomtranslatorarray["\xA9".'ed3'] = 'edit3';
2753              $handyatomtranslatorarray["\xA9".'ed4'] = 'edit4';
2754              $handyatomtranslatorarray["\xA9".'ed5'] = 'edit5';
2755              $handyatomtranslatorarray["\xA9".'ed6'] = 'edit6';
2756              $handyatomtranslatorarray["\xA9".'ed7'] = 'edit7';
2757              $handyatomtranslatorarray["\xA9".'ed8'] = 'edit8';
2758              $handyatomtranslatorarray["\xA9".'ed9'] = 'edit9';
2759              $handyatomtranslatorarray["\xA9".'enc'] = 'encoded_by';
2760              $handyatomtranslatorarray["\xA9".'fmt'] = 'format';
2761              $handyatomtranslatorarray["\xA9".'gen'] = 'genre';               // iTunes 4.0
2762              $handyatomtranslatorarray["\xA9".'grp'] = 'grouping';            // iTunes 4.2
2763              $handyatomtranslatorarray["\xA9".'hst'] = 'host_computer';
2764              $handyatomtranslatorarray["\xA9".'inf'] = 'information';
2765              $handyatomtranslatorarray["\xA9".'lyr'] = 'lyrics';              // iTunes 5.0
2766              $handyatomtranslatorarray["\xA9".'mak'] = 'make';
2767              $handyatomtranslatorarray["\xA9".'mod'] = 'model';
2768              $handyatomtranslatorarray["\xA9".'nam'] = 'title';               // iTunes 4.0
2769              $handyatomtranslatorarray["\xA9".'ope'] = 'composer';
2770              $handyatomtranslatorarray["\xA9".'prd'] = 'producer';
2771              $handyatomtranslatorarray["\xA9".'PRD'] = 'product';
2772              $handyatomtranslatorarray["\xA9".'prf'] = 'performers';
2773              $handyatomtranslatorarray["\xA9".'req'] = 'system_requirements';
2774              $handyatomtranslatorarray["\xA9".'src'] = 'source_credit';
2775              $handyatomtranslatorarray["\xA9".'swr'] = 'software';
2776              $handyatomtranslatorarray["\xA9".'too'] = 'encoding_tool';       // iTunes 4.0
2777              $handyatomtranslatorarray["\xA9".'trk'] = 'track_number';
2778              $handyatomtranslatorarray["\xA9".'url'] = 'url';
2779              $handyatomtranslatorarray["\xA9".'wrn'] = 'warning';
2780              $handyatomtranslatorarray["\xA9".'wrt'] = 'composer';
2781              $handyatomtranslatorarray['aART'] = 'album_artist';
2782              $handyatomtranslatorarray['apID'] = 'purchase_account';
2783              $handyatomtranslatorarray['catg'] = 'category';            // iTunes 4.9
2784              $handyatomtranslatorarray['covr'] = 'picture';             // iTunes 4.0
2785              $handyatomtranslatorarray['cpil'] = 'compilation';         // iTunes 4.0
2786              $handyatomtranslatorarray['cprt'] = 'copyright';           // iTunes 4.0?
2787              $handyatomtranslatorarray['desc'] = 'description';         // iTunes 5.0
2788              $handyatomtranslatorarray['disk'] = 'disc_number';         // iTunes 4.0
2789              $handyatomtranslatorarray['egid'] = 'episode_guid';        // iTunes 4.9
2790              $handyatomtranslatorarray['gnre'] = 'genre';               // iTunes 4.0
2791              $handyatomtranslatorarray['hdvd'] = 'hd_video';            // iTunes 4.0
2792              $handyatomtranslatorarray['ldes'] = 'description_long';    //
2793              $handyatomtranslatorarray['keyw'] = 'keyword';             // iTunes 4.9
2794              $handyatomtranslatorarray['pcst'] = 'podcast';             // iTunes 4.9
2795              $handyatomtranslatorarray['pgap'] = 'gapless_playback';    // iTunes 7.0
2796              $handyatomtranslatorarray['purd'] = 'purchase_date';       // iTunes 6.0.2
2797              $handyatomtranslatorarray['purl'] = 'podcast_url';         // iTunes 4.9
2798              $handyatomtranslatorarray['rtng'] = 'rating';              // iTunes 4.0
2799              $handyatomtranslatorarray['soaa'] = 'sort_album_artist';   //
2800              $handyatomtranslatorarray['soal'] = 'sort_album';          //
2801              $handyatomtranslatorarray['soar'] = 'sort_artist';         //
2802              $handyatomtranslatorarray['soco'] = 'sort_composer';       //
2803              $handyatomtranslatorarray['sonm'] = 'sort_title';          //
2804              $handyatomtranslatorarray['sosn'] = 'sort_show';           //
2805              $handyatomtranslatorarray['stik'] = 'stik';                // iTunes 4.9
2806              $handyatomtranslatorarray['tmpo'] = 'bpm';                 // iTunes 4.0
2807              $handyatomtranslatorarray['trkn'] = 'track_number';        // iTunes 4.0
2808              $handyatomtranslatorarray['tven'] = 'tv_episode_id';       //
2809              $handyatomtranslatorarray['tves'] = 'tv_episode';          // iTunes 6.0
2810              $handyatomtranslatorarray['tvnn'] = 'tv_network_name';     // iTunes 6.0
2811              $handyatomtranslatorarray['tvsh'] = 'tv_show_name';        // iTunes 6.0
2812              $handyatomtranslatorarray['tvsn'] = 'tv_season';           // iTunes 6.0
2813  
2814              // boxnames:
2815              /*
2816              $handyatomtranslatorarray['iTunSMPB']                    = 'iTunSMPB';
2817              $handyatomtranslatorarray['iTunNORM']                    = 'iTunNORM';
2818              $handyatomtranslatorarray['Encoding Params']             = 'Encoding Params';
2819              $handyatomtranslatorarray['replaygain_track_gain']       = 'replaygain_track_gain';
2820              $handyatomtranslatorarray['replaygain_track_peak']       = 'replaygain_track_peak';
2821              $handyatomtranslatorarray['replaygain_track_minmax']     = 'replaygain_track_minmax';
2822              $handyatomtranslatorarray['MusicIP PUID']                = 'MusicIP PUID';
2823              $handyatomtranslatorarray['MusicBrainz Artist Id']       = 'MusicBrainz Artist Id';
2824              $handyatomtranslatorarray['MusicBrainz Album Id']        = 'MusicBrainz Album Id';
2825              $handyatomtranslatorarray['MusicBrainz Album Artist Id'] = 'MusicBrainz Album Artist Id';
2826              $handyatomtranslatorarray['MusicBrainz Track Id']        = 'MusicBrainz Track Id';
2827              $handyatomtranslatorarray['MusicBrainz Disc Id']         = 'MusicBrainz Disc Id';
2828  
2829              // http://age.hobba.nl/audio/tag_frame_reference.html
2830              $handyatomtranslatorarray['PLAY_COUNTER']                = 'play_counter'; // Foobar2000 - https://www.getid3.org/phpBB3/viewtopic.php?t=1355
2831              $handyatomtranslatorarray['MEDIATYPE']                   = 'mediatype';    // Foobar2000 - https://www.getid3.org/phpBB3/viewtopic.php?t=1355
2832              */
2833          }
2834          $info = &$this->getid3->info;
2835          $comment_key = '';
2836          if ($boxname && ($boxname != $keyname)) {
2837              $comment_key = (isset($handyatomtranslatorarray[$boxname]) ? $handyatomtranslatorarray[$boxname] : $boxname);
2838          } elseif (isset($handyatomtranslatorarray[$keyname])) {
2839              $comment_key = $handyatomtranslatorarray[$keyname];
2840          }
2841          if ($comment_key) {
2842              if ($comment_key == 'picture') {
2843                  if (!is_array($data)) {
2844                      $image_mime = '';
2845                      if (preg_match('#^\x89\x50\x4E\x47\x0D\x0A\x1A\x0A#', $data)) {
2846                          $image_mime = 'image/png';
2847                      } elseif (preg_match('#^\xFF\xD8\xFF#', $data)) {
2848                          $image_mime = 'image/jpeg';
2849                      } elseif (preg_match('#^GIF#', $data)) {
2850                          $image_mime = 'image/gif';
2851                      } elseif (preg_match('#^BM#', $data)) {
2852                          $image_mime = 'image/bmp';
2853                      }
2854                      $data = array('data'=>$data, 'image_mime'=>$image_mime);
2855                  }
2856              }
2857              $gooddata = array($data);
2858              if ($comment_key == 'genre') {
2859                  // some other taggers separate multiple genres with semicolon, e.g. "Heavy Metal;Thrash Metal;Metal"
2860                  $gooddata = explode(';', $data);
2861              }
2862              foreach ($gooddata as $data) {
2863                  if (is_array($data) || (!empty($info['quicktime']['comments'][$comment_key]) && in_array($data, $info['quicktime']['comments'][$comment_key]))) {
2864                      // avoid duplicate copies of identical data
2865                      continue;
2866                  }
2867                  $info['quicktime']['comments'][$comment_key][] = $data;
2868              }
2869          }
2870          return true;
2871      }
2872  
2873      /**
2874       * @param string $lstring
2875       * @param int    $count
2876       *
2877       * @return string
2878       */
2879  	public function LociString($lstring, &$count) {
2880          // Loci strings are UTF-8 or UTF-16 and null (x00/x0000) terminated. UTF-16 has a BOM
2881          // Also need to return the number of bytes the string occupied so additional fields can be extracted
2882          $len = strlen($lstring);
2883          if ($len == 0) {
2884              $count = 0;
2885              return '';
2886          }
2887          if ($lstring[0] == "\x00") {
2888              $count = 1;
2889              return '';
2890          }
2891          // check for BOM
2892          if (($len > 2) && ((($lstring[0] == "\xFE") && ($lstring[1] == "\xFF")) || (($lstring[0] == "\xFF") && ($lstring[1] == "\xFE")))) {
2893              // UTF-16
2894              if (preg_match('/(.*)\x00/', $lstring, $lmatches)) {
2895                  $count = strlen($lmatches[1]) * 2 + 2; //account for 2 byte characters and trailing \x0000
2896                  return getid3_lib::iconv_fallback_utf16_utf8($lmatches[1]);
2897              } else {
2898                  return '';
2899              }
2900          }
2901          // UTF-8
2902          if (preg_match('/(.*)\x00/', $lstring, $lmatches)) {
2903              $count = strlen($lmatches[1]) + 1; //account for trailing \x00
2904              return $lmatches[1];
2905          }
2906          return '';
2907      }
2908  
2909      /**
2910       * @param string $nullterminatedstring
2911       *
2912       * @return string
2913       */
2914  	public function NoNullString($nullterminatedstring) {
2915          // remove the single null terminator on null terminated strings
2916          if (substr($nullterminatedstring, strlen($nullterminatedstring) - 1, 1) === "\x00") {
2917              return substr($nullterminatedstring, 0, strlen($nullterminatedstring) - 1);
2918          }
2919          return $nullterminatedstring;
2920      }
2921  
2922      /**
2923       * @param string $pascalstring
2924       *
2925       * @return string
2926       */
2927  	public function Pascal2String($pascalstring) {
2928          // Pascal strings have 1 unsigned byte at the beginning saying how many chars (1-255) are in the string
2929          return substr($pascalstring, 1);
2930      }
2931  
2932  
2933      /**
2934       * Helper functions for m4b audiobook chapters
2935       * code by Steffen Hartmann 2015-Nov-08.
2936       *
2937       * @param array  $info
2938       * @param string $tag
2939       * @param string $history
2940       * @param array  $result
2941       */
2942  	public function search_tag_by_key($info, $tag, $history, &$result) {
2943          foreach ($info as $key => $value) {
2944              $key_history = $history.'/'.$key;
2945              if ($key === $tag) {
2946                  $result[] = array($key_history, $info);
2947              } else {
2948                  if (is_array($value)) {
2949                      $this->search_tag_by_key($value, $tag, $key_history, $result);
2950                  }
2951              }
2952          }
2953      }
2954  
2955      /**
2956       * @param array  $info
2957       * @param string $k
2958       * @param string $v
2959       * @param string $history
2960       * @param array  $result
2961       */
2962  	public function search_tag_by_pair($info, $k, $v, $history, &$result) {
2963          foreach ($info as $key => $value) {
2964              $key_history = $history.'/'.$key;
2965              if (($key === $k) && ($value === $v)) {
2966                  $result[] = array($key_history, $info);
2967              } else {
2968                  if (is_array($value)) {
2969                      $this->search_tag_by_pair($value, $k, $v, $key_history, $result);
2970                  }
2971              }
2972          }
2973      }
2974  
2975      /**
2976       * @param array $info
2977       *
2978       * @return array
2979       */
2980  	public function quicktime_time_to_sample_table($info) {
2981          $res = array();
2982          $this->search_tag_by_pair($info['quicktime']['moov'], 'name', 'stbl', 'quicktime/moov', $res);
2983          foreach ($res as $value) {
2984              $stbl_res = array();
2985              $this->search_tag_by_pair($value[1], 'data_format', 'text', $value[0], $stbl_res);
2986              if (count($stbl_res) > 0) {
2987                  $stts_res = array();
2988                  $this->search_tag_by_key($value[1], 'time_to_sample_table', $value[0], $stts_res);
2989                  if (count($stts_res) > 0) {
2990                      return $stts_res[0][1]['time_to_sample_table'];
2991                  }
2992              }
2993          }
2994          return array();
2995      }
2996  
2997      /**
2998       * @param array $info
2999       *
3000       * @return int
3001       */
3002  	public function quicktime_bookmark_time_scale($info) {
3003          $time_scale = '';
3004          $ts_prefix_len = 0;
3005          $res = array();
3006          $this->search_tag_by_pair($info['quicktime']['moov'], 'name', 'stbl', 'quicktime/moov', $res);
3007          foreach ($res as $value) {
3008              $stbl_res = array();
3009              $this->search_tag_by_pair($value[1], 'data_format', 'text', $value[0], $stbl_res);
3010              if (count($stbl_res) > 0) {
3011                  $ts_res = array();
3012                  $this->search_tag_by_key($info['quicktime']['moov'], 'time_scale', 'quicktime/moov', $ts_res);
3013                  foreach ($ts_res as $sub_value) {
3014                      $prefix = substr($sub_value[0], 0, -12);
3015                      if ((substr($stbl_res[0][0], 0, strlen($prefix)) === $prefix) && ($ts_prefix_len < strlen($prefix))) {
3016                          $time_scale = $sub_value[1]['time_scale'];
3017                          $ts_prefix_len = strlen($prefix);
3018                      }
3019                  }
3020              }
3021          }
3022          return $time_scale;
3023      }
3024      /*
3025      // END helper functions for m4b audiobook chapters
3026      */
3027  
3028  
3029  }


Generated: Tue May 26 01:00:04 2020 Cross-referenced by PHPXref 0.7.1