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

   1  <?php
   2  /////////////////////////////////////////////////////////////////
   3  /// getID3() by James Heinrich <info@getid3.org>               //
   4  //  available at https://github.com/JamesHeinrich/getID3       //
   5  //            or https://www.getid3.org                        //
   6  //            or http://getid3.sourceforge.net                 //
   7  //  see readme.txt for more details                            //
   8  /////////////////////////////////////////////////////////////////
   9  //                                                             //
  10  // module.audio-video.asf.php                                  //
  11  // module for analyzing ASF, WMA and WMV files                 //
  12  // dependencies: module.audio-video.riff.php                   //
  13  //                                                            ///
  14  /////////////////////////////////////////////////////////////////
  15  
  16  if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
  17      exit;
  18  }
  19  getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
  20  
  21  class getid3_asf extends getid3_handler
  22  {
  23      /**
  24       * @param getID3 $getid3
  25       */
  26  	public function __construct(getID3 $getid3) {
  27          parent::__construct($getid3);  // extends getid3_handler::__construct()
  28  
  29          // initialize all GUID constants
  30          $GUIDarray = $this->KnownGUIDs();
  31          foreach ($GUIDarray as $GUIDname => $hexstringvalue) {
  32              if (!defined($GUIDname)) {
  33                  define($GUIDname, $this->GUIDtoBytestring($hexstringvalue));
  34              }
  35          }
  36      }
  37  
  38      /**
  39       * @return bool
  40       */
  41  	public function Analyze() {
  42          $info = &$this->getid3->info;
  43  
  44          // Shortcuts
  45          $thisfile_audio = &$info['audio'];
  46          $thisfile_video = &$info['video'];
  47          $info['asf']  = array();
  48          $thisfile_asf = &$info['asf'];
  49          $thisfile_asf['comments'] = array();
  50          $thisfile_asf_comments    = &$thisfile_asf['comments'];
  51          $thisfile_asf['header_object'] = array();
  52          $thisfile_asf_headerobject     = &$thisfile_asf['header_object'];
  53  
  54  
  55          // ASF structure:
  56          // * Header Object [required]
  57          //   * File Properties Object [required]   (global file attributes)
  58          //   * Stream Properties Object [required] (defines media stream & characteristics)
  59          //   * Header Extension Object [required]  (additional functionality)
  60          //   * Content Description Object          (bibliographic information)
  61          //   * Script Command Object               (commands for during playback)
  62          //   * Marker Object                       (named jumped points within the file)
  63          // * Data Object [required]
  64          //   * Data Packets
  65          // * Index Object
  66  
  67          // Header Object: (mandatory, one only)
  68          // Field Name                   Field Type   Size (bits)
  69          // Object ID                    GUID         128             // GUID for header object - GETID3_ASF_Header_Object
  70          // Object Size                  QWORD        64              // size of header object, including 30 bytes of Header Object header
  71          // Number of Header Objects     DWORD        32              // number of objects in header object
  72          // Reserved1                    BYTE         8               // hardcoded: 0x01
  73          // Reserved2                    BYTE         8               // hardcoded: 0x02
  74  
  75          $info['fileformat'] = 'asf';
  76  
  77          $this->fseek($info['avdataoffset']);
  78          $HeaderObjectData = $this->fread(30);
  79  
  80          $thisfile_asf_headerobject['objectid']      = substr($HeaderObjectData, 0, 16);
  81          $thisfile_asf_headerobject['objectid_guid'] = $this->BytestringToGUID($thisfile_asf_headerobject['objectid']);
  82          if ($thisfile_asf_headerobject['objectid'] != GETID3_ASF_Header_Object) {
  83              unset($info['fileformat'], $info['asf']);
  84              return $this->error('ASF header GUID {'.$this->BytestringToGUID($thisfile_asf_headerobject['objectid']).'} does not match expected "GETID3_ASF_Header_Object" GUID {'.$this->BytestringToGUID(GETID3_ASF_Header_Object).'}');
  85          }
  86          $thisfile_asf_headerobject['objectsize']    = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 16, 8));
  87          $thisfile_asf_headerobject['headerobjects'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 24, 4));
  88          $thisfile_asf_headerobject['reserved1']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 28, 1));
  89          $thisfile_asf_headerobject['reserved2']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 29, 1));
  90  
  91          $NextObjectOffset = $this->ftell();
  92          $ASFHeaderData = $this->fread($thisfile_asf_headerobject['objectsize'] - 30);
  93          $offset = 0;
  94          $thisfile_asf_streambitratepropertiesobject = array();
  95          $thisfile_asf_codeclistobject = array();
  96  
  97          for ($HeaderObjectsCounter = 0; $HeaderObjectsCounter < $thisfile_asf_headerobject['headerobjects']; $HeaderObjectsCounter++) {
  98              $NextObjectGUID = substr($ASFHeaderData, $offset, 16);
  99              $offset += 16;
 100              $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
 101              $NextObjectSize = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 102              $offset += 8;
 103              switch ($NextObjectGUID) {
 104  
 105                  case GETID3_ASF_File_Properties_Object:
 106                      // File Properties Object: (mandatory, one only)
 107                      // Field Name                   Field Type   Size (bits)
 108                      // Object ID                    GUID         128             // GUID for file properties object - GETID3_ASF_File_Properties_Object
 109                      // Object Size                  QWORD        64              // size of file properties object, including 104 bytes of File Properties Object header
 110                      // File ID                      GUID         128             // unique ID - identical to File ID in Data Object
 111                      // File Size                    QWORD        64              // entire file in bytes. Invalid if Broadcast Flag == 1
 112                      // Creation Date                QWORD        64              // date & time of file creation. Maybe invalid if Broadcast Flag == 1
 113                      // Data Packets Count           QWORD        64              // number of data packets in Data Object. Invalid if Broadcast Flag == 1
 114                      // Play Duration                QWORD        64              // playtime, in 100-nanosecond units. Invalid if Broadcast Flag == 1
 115                      // Send Duration                QWORD        64              // time needed to send file, in 100-nanosecond units. Players can ignore this value. Invalid if Broadcast Flag == 1
 116                      // Preroll                      QWORD        64              // time to buffer data before starting to play file, in 1-millisecond units. If <> 0, PlayDuration and PresentationTime have been offset by this amount
 117                      // Flags                        DWORD        32              //
 118                      // * Broadcast Flag             bits         1  (0x01)       // file is currently being written, some header values are invalid
 119                      // * Seekable Flag              bits         1  (0x02)       // is file seekable
 120                      // * Reserved                   bits         30 (0xFFFFFFFC) // reserved - set to zero
 121                      // Minimum Data Packet Size     DWORD        32              // in bytes. should be same as Maximum Data Packet Size. Invalid if Broadcast Flag == 1
 122                      // Maximum Data Packet Size     DWORD        32              // in bytes. should be same as Minimum Data Packet Size. Invalid if Broadcast Flag == 1
 123                      // Maximum Bitrate              DWORD        32              // maximum instantaneous bitrate in bits per second for entire file, including all data streams and ASF overhead
 124  
 125                      // shortcut
 126                      $thisfile_asf['file_properties_object'] = array();
 127                      $thisfile_asf_filepropertiesobject      = &$thisfile_asf['file_properties_object'];
 128  
 129                      $thisfile_asf_filepropertiesobject['offset']             = $NextObjectOffset + $offset;
 130                      $thisfile_asf_filepropertiesobject['objectid']           = $NextObjectGUID;
 131                      $thisfile_asf_filepropertiesobject['objectid_guid']      = $NextObjectGUIDtext;
 132                      $thisfile_asf_filepropertiesobject['objectsize']         = $NextObjectSize;
 133                      $thisfile_asf_filepropertiesobject['fileid']             = substr($ASFHeaderData, $offset, 16);
 134                      $offset += 16;
 135                      $thisfile_asf_filepropertiesobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_filepropertiesobject['fileid']);
 136                      $thisfile_asf_filepropertiesobject['filesize']           = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 137                      $offset += 8;
 138                      $thisfile_asf_filepropertiesobject['creation_date']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 139                      $thisfile_asf_filepropertiesobject['creation_date_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_filepropertiesobject['creation_date']);
 140                      $offset += 8;
 141                      $thisfile_asf_filepropertiesobject['data_packets']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 142                      $offset += 8;
 143                      $thisfile_asf_filepropertiesobject['play_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 144                      $offset += 8;
 145                      $thisfile_asf_filepropertiesobject['send_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 146                      $offset += 8;
 147                      $thisfile_asf_filepropertiesobject['preroll']            = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 148                      $offset += 8;
 149                      $thisfile_asf_filepropertiesobject['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 150                      $offset += 4;
 151                      $thisfile_asf_filepropertiesobject['flags']['broadcast'] = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0001);
 152                      $thisfile_asf_filepropertiesobject['flags']['seekable']  = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0002);
 153  
 154                      $thisfile_asf_filepropertiesobject['min_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 155                      $offset += 4;
 156                      $thisfile_asf_filepropertiesobject['max_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 157                      $offset += 4;
 158                      $thisfile_asf_filepropertiesobject['max_bitrate']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 159                      $offset += 4;
 160  
 161                      if ($thisfile_asf_filepropertiesobject['flags']['broadcast']) {
 162  
 163                          // broadcast flag is set, some values invalid
 164                          unset($thisfile_asf_filepropertiesobject['filesize']);
 165                          unset($thisfile_asf_filepropertiesobject['data_packets']);
 166                          unset($thisfile_asf_filepropertiesobject['play_duration']);
 167                          unset($thisfile_asf_filepropertiesobject['send_duration']);
 168                          unset($thisfile_asf_filepropertiesobject['min_packet_size']);
 169                          unset($thisfile_asf_filepropertiesobject['max_packet_size']);
 170  
 171                      } else {
 172  
 173                          // broadcast flag NOT set, perform calculations
 174                          $info['playtime_seconds'] = ($thisfile_asf_filepropertiesobject['play_duration'] / 10000000) - ($thisfile_asf_filepropertiesobject['preroll'] / 1000);
 175  
 176                          //$info['bitrate'] = $thisfile_asf_filepropertiesobject['max_bitrate'];
 177                          $info['bitrate'] = ((isset($thisfile_asf_filepropertiesobject['filesize']) ? $thisfile_asf_filepropertiesobject['filesize'] : $info['filesize']) * 8) / $info['playtime_seconds'];
 178                      }
 179                      break;
 180  
 181                  case GETID3_ASF_Stream_Properties_Object:
 182                      // Stream Properties Object: (mandatory, one per media stream)
 183                      // Field Name                   Field Type   Size (bits)
 184                      // Object ID                    GUID         128             // GUID for stream properties object - GETID3_ASF_Stream_Properties_Object
 185                      // Object Size                  QWORD        64              // size of stream properties object, including 78 bytes of Stream Properties Object header
 186                      // Stream Type                  GUID         128             // GETID3_ASF_Audio_Media, GETID3_ASF_Video_Media or GETID3_ASF_Command_Media
 187                      // Error Correction Type        GUID         128             // GETID3_ASF_Audio_Spread for audio-only streams, GETID3_ASF_No_Error_Correction for other stream types
 188                      // Time Offset                  QWORD        64              // 100-nanosecond units. typically zero. added to all timestamps of samples in the stream
 189                      // Type-Specific Data Length    DWORD        32              // number of bytes for Type-Specific Data field
 190                      // Error Correction Data Length DWORD        32              // number of bytes for Error Correction Data field
 191                      // Flags                        WORD         16              //
 192                      // * Stream Number              bits         7 (0x007F)      // number of this stream.  1 <= valid <= 127
 193                      // * Reserved                   bits         8 (0x7F80)      // reserved - set to zero
 194                      // * Encrypted Content Flag     bits         1 (0x8000)      // stream contents encrypted if set
 195                      // Reserved                     DWORD        32              // reserved - set to zero
 196                      // Type-Specific Data           BYTESTREAM   variable        // type-specific format data, depending on value of Stream Type
 197                      // Error Correction Data        BYTESTREAM   variable        // error-correction-specific format data, depending on value of Error Correct Type
 198  
 199                      // There is one GETID3_ASF_Stream_Properties_Object for each stream (audio, video) but the
 200                      // stream number isn't known until halfway through decoding the structure, hence it
 201                      // it is decoded to a temporary variable and then stuck in the appropriate index later
 202  
 203                      $StreamPropertiesObjectData['offset']             = $NextObjectOffset + $offset;
 204                      $StreamPropertiesObjectData['objectid']           = $NextObjectGUID;
 205                      $StreamPropertiesObjectData['objectid_guid']      = $NextObjectGUIDtext;
 206                      $StreamPropertiesObjectData['objectsize']         = $NextObjectSize;
 207                      $StreamPropertiesObjectData['stream_type']        = substr($ASFHeaderData, $offset, 16);
 208                      $offset += 16;
 209                      $StreamPropertiesObjectData['stream_type_guid']   = $this->BytestringToGUID($StreamPropertiesObjectData['stream_type']);
 210                      $StreamPropertiesObjectData['error_correct_type'] = substr($ASFHeaderData, $offset, 16);
 211                      $offset += 16;
 212                      $StreamPropertiesObjectData['error_correct_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['error_correct_type']);
 213                      $StreamPropertiesObjectData['time_offset']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 214                      $offset += 8;
 215                      $StreamPropertiesObjectData['type_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 216                      $offset += 4;
 217                      $StreamPropertiesObjectData['error_data_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 218                      $offset += 4;
 219                      $StreamPropertiesObjectData['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 220                      $offset += 2;
 221                      $StreamPropertiesObjectStreamNumber               = $StreamPropertiesObjectData['flags_raw'] & 0x007F;
 222                      $StreamPropertiesObjectData['flags']['encrypted'] = (bool) ($StreamPropertiesObjectData['flags_raw'] & 0x8000);
 223  
 224                      $offset += 4; // reserved - DWORD
 225                      $StreamPropertiesObjectData['type_specific_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['type_data_length']);
 226                      $offset += $StreamPropertiesObjectData['type_data_length'];
 227                      $StreamPropertiesObjectData['error_correct_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['error_data_length']);
 228                      $offset += $StreamPropertiesObjectData['error_data_length'];
 229  
 230                      switch ($StreamPropertiesObjectData['stream_type']) {
 231  
 232                          case GETID3_ASF_Audio_Media:
 233                              $thisfile_audio['dataformat']   = (!empty($thisfile_audio['dataformat'])   ? $thisfile_audio['dataformat']   : 'asf');
 234                              $thisfile_audio['bitrate_mode'] = (!empty($thisfile_audio['bitrate_mode']) ? $thisfile_audio['bitrate_mode'] : 'cbr');
 235  
 236                              $audiodata = getid3_riff::parseWAVEFORMATex(substr($StreamPropertiesObjectData['type_specific_data'], 0, 16));
 237                              unset($audiodata['raw']);
 238                              $thisfile_audio = getid3_lib::array_merge_noclobber($audiodata, $thisfile_audio);
 239                              break;
 240  
 241                          case GETID3_ASF_Video_Media:
 242                              $thisfile_video['dataformat']   = (!empty($thisfile_video['dataformat'])   ? $thisfile_video['dataformat']   : 'asf');
 243                              $thisfile_video['bitrate_mode'] = (!empty($thisfile_video['bitrate_mode']) ? $thisfile_video['bitrate_mode'] : 'cbr');
 244                              break;
 245  
 246                          case GETID3_ASF_Command_Media:
 247                          default:
 248                              // do nothing
 249                              break;
 250  
 251                      }
 252  
 253                      $thisfile_asf['stream_properties_object'][$StreamPropertiesObjectStreamNumber] = $StreamPropertiesObjectData;
 254                      unset($StreamPropertiesObjectData); // clear for next stream, if any
 255                      break;
 256  
 257                  case GETID3_ASF_Header_Extension_Object:
 258                      // Header Extension Object: (mandatory, one only)
 259                      // Field Name                   Field Type   Size (bits)
 260                      // Object ID                    GUID         128             // GUID for Header Extension object - GETID3_ASF_Header_Extension_Object
 261                      // Object Size                  QWORD        64              // size of Header Extension object, including 46 bytes of Header Extension Object header
 262                      // Reserved Field 1             GUID         128             // hardcoded: GETID3_ASF_Reserved_1
 263                      // Reserved Field 2             WORD         16              // hardcoded: 0x00000006
 264                      // Header Extension Data Size   DWORD        32              // in bytes. valid: 0, or > 24. equals object size minus 46
 265                      // Header Extension Data        BYTESTREAM   variable        // array of zero or more extended header objects
 266  
 267                      // shortcut
 268                      $thisfile_asf['header_extension_object'] = array();
 269                      $thisfile_asf_headerextensionobject      = &$thisfile_asf['header_extension_object'];
 270  
 271                      $thisfile_asf_headerextensionobject['offset']              = $NextObjectOffset + $offset;
 272                      $thisfile_asf_headerextensionobject['objectid']            = $NextObjectGUID;
 273                      $thisfile_asf_headerextensionobject['objectid_guid']       = $NextObjectGUIDtext;
 274                      $thisfile_asf_headerextensionobject['objectsize']          = $NextObjectSize;
 275                      $thisfile_asf_headerextensionobject['reserved_1']          = substr($ASFHeaderData, $offset, 16);
 276                      $offset += 16;
 277                      $thisfile_asf_headerextensionobject['reserved_1_guid']     = $this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']);
 278                      if ($thisfile_asf_headerextensionobject['reserved_1'] != GETID3_ASF_Reserved_1) {
 279                          $this->warning('header_extension_object.reserved_1 GUID ('.$this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']).') does not match expected "GETID3_ASF_Reserved_1" GUID ('.$this->BytestringToGUID(GETID3_ASF_Reserved_1).')');
 280                          //return false;
 281                          break;
 282                      }
 283                      $thisfile_asf_headerextensionobject['reserved_2']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 284                      $offset += 2;
 285                      if ($thisfile_asf_headerextensionobject['reserved_2'] != 6) {
 286                          $this->warning('header_extension_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_headerextensionobject['reserved_2']).') does not match expected value of "6"');
 287                          //return false;
 288                          break;
 289                      }
 290                      $thisfile_asf_headerextensionobject['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 291                      $offset += 4;
 292                      $thisfile_asf_headerextensionobject['extension_data']      =                              substr($ASFHeaderData, $offset, $thisfile_asf_headerextensionobject['extension_data_size']);
 293                      $unhandled_sections = 0;
 294                      $thisfile_asf_headerextensionobject['extension_data_parsed'] = $this->HeaderExtensionObjectDataParse($thisfile_asf_headerextensionobject['extension_data'], $unhandled_sections);
 295                      if ($unhandled_sections === 0) {
 296                          unset($thisfile_asf_headerextensionobject['extension_data']);
 297                      }
 298                      $offset += $thisfile_asf_headerextensionobject['extension_data_size'];
 299                      break;
 300  
 301                  case GETID3_ASF_Codec_List_Object:
 302                      // Codec List Object: (optional, one only)
 303                      // Field Name                   Field Type   Size (bits)
 304                      // Object ID                    GUID         128             // GUID for Codec List object - GETID3_ASF_Codec_List_Object
 305                      // Object Size                  QWORD        64              // size of Codec List object, including 44 bytes of Codec List Object header
 306                      // Reserved                     GUID         128             // hardcoded: 86D15241-311D-11D0-A3A4-00A0C90348F6
 307                      // Codec Entries Count          DWORD        32              // number of entries in Codec Entries array
 308                      // Codec Entries                array of:    variable        //
 309                      // * Type                       WORD         16              // 0x0001 = Video Codec, 0x0002 = Audio Codec, 0xFFFF = Unknown Codec
 310                      // * Codec Name Length          WORD         16              // number of Unicode characters stored in the Codec Name field
 311                      // * Codec Name                 WCHAR        variable        // array of Unicode characters - name of codec used to create the content
 312                      // * Codec Description Length   WORD         16              // number of Unicode characters stored in the Codec Description field
 313                      // * Codec Description          WCHAR        variable        // array of Unicode characters - description of format used to create the content
 314                      // * Codec Information Length   WORD         16              // number of Unicode characters stored in the Codec Information field
 315                      // * Codec Information          BYTESTREAM   variable        // opaque array of information bytes about the codec used to create the content
 316  
 317                      // shortcut
 318                      $thisfile_asf['codec_list_object'] = array();
 319                      $thisfile_asf_codeclistobject      = &$thisfile_asf['codec_list_object'];
 320  
 321                      $thisfile_asf_codeclistobject['offset']                    = $NextObjectOffset + $offset;
 322                      $thisfile_asf_codeclistobject['objectid']                  = $NextObjectGUID;
 323                      $thisfile_asf_codeclistobject['objectid_guid']             = $NextObjectGUIDtext;
 324                      $thisfile_asf_codeclistobject['objectsize']                = $NextObjectSize;
 325                      $thisfile_asf_codeclistobject['reserved']                  = substr($ASFHeaderData, $offset, 16);
 326                      $offset += 16;
 327                      $thisfile_asf_codeclistobject['reserved_guid']             = $this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']);
 328                      if ($thisfile_asf_codeclistobject['reserved'] != $this->GUIDtoBytestring('86D15241-311D-11D0-A3A4-00A0C90348F6')) {
 329                          $this->warning('codec_list_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {86D15241-311D-11D0-A3A4-00A0C90348F6}');
 330                          //return false;
 331                          break;
 332                      }
 333                      $thisfile_asf_codeclistobject['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 334                      $offset += 4;
 335                      for ($CodecEntryCounter = 0; $CodecEntryCounter < $thisfile_asf_codeclistobject['codec_entries_count']; $CodecEntryCounter++) {
 336                          // shortcut
 337                          $thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter] = array();
 338                          $thisfile_asf_codeclistobject_codecentries_current = &$thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter];
 339  
 340                          $thisfile_asf_codeclistobject_codecentries_current['type_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 341                          $offset += 2;
 342                          $thisfile_asf_codeclistobject_codecentries_current['type'] = self::codecListObjectTypeLookup($thisfile_asf_codeclistobject_codecentries_current['type_raw']);
 343  
 344                          $CodecNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 345                          $offset += 2;
 346                          $thisfile_asf_codeclistobject_codecentries_current['name'] = substr($ASFHeaderData, $offset, $CodecNameLength);
 347                          $offset += $CodecNameLength;
 348  
 349                          $CodecDescriptionLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 350                          $offset += 2;
 351                          $thisfile_asf_codeclistobject_codecentries_current['description'] = substr($ASFHeaderData, $offset, $CodecDescriptionLength);
 352                          $offset += $CodecDescriptionLength;
 353  
 354                          $CodecInformationLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 355                          $offset += 2;
 356                          $thisfile_asf_codeclistobject_codecentries_current['information'] = substr($ASFHeaderData, $offset, $CodecInformationLength);
 357                          $offset += $CodecInformationLength;
 358  
 359                          if ($thisfile_asf_codeclistobject_codecentries_current['type_raw'] == 2) { // audio codec
 360  
 361                              if (strpos($thisfile_asf_codeclistobject_codecentries_current['description'], ',') === false) {
 362                                  $this->warning('[asf][codec_list_object][codec_entries]['.$CodecEntryCounter.'][description] expected to contain comma-separated list of parameters: "'.$thisfile_asf_codeclistobject_codecentries_current['description'].'"');
 363                              } else {
 364  
 365                                  list($AudioCodecBitrate, $AudioCodecFrequency, $AudioCodecChannels) = explode(',', $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']));
 366                                  $thisfile_audio['codec'] = $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['name']);
 367  
 368                                  if (!isset($thisfile_audio['bitrate']) && strstr($AudioCodecBitrate, 'kbps')) {
 369                                      $thisfile_audio['bitrate'] = (int) trim(str_replace('kbps', '', $AudioCodecBitrate)) * 1000;
 370                                  }
 371                                  //if (!isset($thisfile_video['bitrate']) && isset($thisfile_audio['bitrate']) && isset($thisfile_asf['file_properties_object']['max_bitrate']) && ($thisfile_asf_codeclistobject['codec_entries_count'] > 1)) {
 372                                  if (empty($thisfile_video['bitrate']) && !empty($thisfile_audio['bitrate']) && !empty($info['bitrate'])) {
 373                                      //$thisfile_video['bitrate'] = $thisfile_asf['file_properties_object']['max_bitrate'] - $thisfile_audio['bitrate'];
 374                                      $thisfile_video['bitrate'] = $info['bitrate'] - $thisfile_audio['bitrate'];
 375                                  }
 376  
 377                                  $AudioCodecFrequency = (int) trim(str_replace('kHz', '', $AudioCodecFrequency));
 378                                  switch ($AudioCodecFrequency) {
 379                                      case 8:
 380                                      case 8000:
 381                                          $thisfile_audio['sample_rate'] = 8000;
 382                                          break;
 383  
 384                                      case 11:
 385                                      case 11025:
 386                                          $thisfile_audio['sample_rate'] = 11025;
 387                                          break;
 388  
 389                                      case 12:
 390                                      case 12000:
 391                                          $thisfile_audio['sample_rate'] = 12000;
 392                                          break;
 393  
 394                                      case 16:
 395                                      case 16000:
 396                                          $thisfile_audio['sample_rate'] = 16000;
 397                                          break;
 398  
 399                                      case 22:
 400                                      case 22050:
 401                                          $thisfile_audio['sample_rate'] = 22050;
 402                                          break;
 403  
 404                                      case 24:
 405                                      case 24000:
 406                                          $thisfile_audio['sample_rate'] = 24000;
 407                                          break;
 408  
 409                                      case 32:
 410                                      case 32000:
 411                                          $thisfile_audio['sample_rate'] = 32000;
 412                                          break;
 413  
 414                                      case 44:
 415                                      case 441000:
 416                                          $thisfile_audio['sample_rate'] = 44100;
 417                                          break;
 418  
 419                                      case 48:
 420                                      case 48000:
 421                                          $thisfile_audio['sample_rate'] = 48000;
 422                                          break;
 423  
 424                                      default:
 425                                          $this->warning('unknown frequency: "'.$AudioCodecFrequency.'" ('.$this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']).')');
 426                                          break;
 427                                  }
 428  
 429                                  if (!isset($thisfile_audio['channels'])) {
 430                                      if (strstr($AudioCodecChannels, 'stereo')) {
 431                                          $thisfile_audio['channels'] = 2;
 432                                      } elseif (strstr($AudioCodecChannels, 'mono')) {
 433                                          $thisfile_audio['channels'] = 1;
 434                                      }
 435                                  }
 436  
 437                              }
 438                          }
 439                      }
 440                      break;
 441  
 442                  case GETID3_ASF_Script_Command_Object:
 443                      // Script Command Object: (optional, one only)
 444                      // Field Name                   Field Type   Size (bits)
 445                      // Object ID                    GUID         128             // GUID for Script Command object - GETID3_ASF_Script_Command_Object
 446                      // Object Size                  QWORD        64              // size of Script Command object, including 44 bytes of Script Command Object header
 447                      // Reserved                     GUID         128             // hardcoded: 4B1ACBE3-100B-11D0-A39B-00A0C90348F6
 448                      // Commands Count               WORD         16              // number of Commands structures in the Script Commands Objects
 449                      // Command Types Count          WORD         16              // number of Command Types structures in the Script Commands Objects
 450                      // Command Types                array of:    variable        //
 451                      // * Command Type Name Length   WORD         16              // number of Unicode characters for Command Type Name
 452                      // * Command Type Name          WCHAR        variable        // array of Unicode characters - name of a type of command
 453                      // Commands                     array of:    variable        //
 454                      // * Presentation Time          DWORD        32              // presentation time of that command, in milliseconds
 455                      // * Type Index                 WORD         16              // type of this command, as a zero-based index into the array of Command Types of this object
 456                      // * Command Name Length        WORD         16              // number of Unicode characters for Command Name
 457                      // * Command Name               WCHAR        variable        // array of Unicode characters - name of this command
 458  
 459                      // shortcut
 460                      $thisfile_asf['script_command_object'] = array();
 461                      $thisfile_asf_scriptcommandobject      = &$thisfile_asf['script_command_object'];
 462  
 463                      $thisfile_asf_scriptcommandobject['offset']               = $NextObjectOffset + $offset;
 464                      $thisfile_asf_scriptcommandobject['objectid']             = $NextObjectGUID;
 465                      $thisfile_asf_scriptcommandobject['objectid_guid']        = $NextObjectGUIDtext;
 466                      $thisfile_asf_scriptcommandobject['objectsize']           = $NextObjectSize;
 467                      $thisfile_asf_scriptcommandobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 468                      $offset += 16;
 469                      $thisfile_asf_scriptcommandobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']);
 470                      if ($thisfile_asf_scriptcommandobject['reserved'] != $this->GUIDtoBytestring('4B1ACBE3-100B-11D0-A39B-00A0C90348F6')) {
 471                          $this->warning('script_command_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4B1ACBE3-100B-11D0-A39B-00A0C90348F6}');
 472                          //return false;
 473                          break;
 474                      }
 475                      $thisfile_asf_scriptcommandobject['commands_count']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 476                      $offset += 2;
 477                      $thisfile_asf_scriptcommandobject['command_types_count']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 478                      $offset += 2;
 479                      for ($CommandTypesCounter = 0; $CommandTypesCounter < $thisfile_asf_scriptcommandobject['command_types_count']; $CommandTypesCounter++) {
 480                          $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 481                          $offset += 2;
 482                          $thisfile_asf_scriptcommandobject['command_types'][$CommandTypesCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
 483                          $offset += $CommandTypeNameLength;
 484                      }
 485                      for ($CommandsCounter = 0; $CommandsCounter < $thisfile_asf_scriptcommandobject['commands_count']; $CommandsCounter++) {
 486                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['presentation_time']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 487                          $offset += 4;
 488                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['type_index']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 489                          $offset += 2;
 490  
 491                          $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 492                          $offset += 2;
 493                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
 494                          $offset += $CommandTypeNameLength;
 495                      }
 496                      break;
 497  
 498                  case GETID3_ASF_Marker_Object:
 499                      // Marker Object: (optional, one only)
 500                      // Field Name                   Field Type   Size (bits)
 501                      // Object ID                    GUID         128             // GUID for Marker object - GETID3_ASF_Marker_Object
 502                      // Object Size                  QWORD        64              // size of Marker object, including 48 bytes of Marker Object header
 503                      // Reserved                     GUID         128             // hardcoded: 4CFEDB20-75F6-11CF-9C0F-00A0C90349CB
 504                      // Markers Count                DWORD        32              // number of Marker structures in Marker Object
 505                      // Reserved                     WORD         16              // hardcoded: 0x0000
 506                      // Name Length                  WORD         16              // number of bytes in the Name field
 507                      // Name                         WCHAR        variable        // name of the Marker Object
 508                      // Markers                      array of:    variable        //
 509                      // * Offset                     QWORD        64              // byte offset into Data Object
 510                      // * Presentation Time          QWORD        64              // in 100-nanosecond units
 511                      // * Entry Length               WORD         16              // length in bytes of (Send Time + Flags + Marker Description Length + Marker Description + Padding)
 512                      // * Send Time                  DWORD        32              // in milliseconds
 513                      // * Flags                      DWORD        32              // hardcoded: 0x00000000
 514                      // * Marker Description Length  DWORD        32              // number of bytes in Marker Description field
 515                      // * Marker Description         WCHAR        variable        // array of Unicode characters - description of marker entry
 516                      // * Padding                    BYTESTREAM   variable        // optional padding bytes
 517  
 518                      // shortcut
 519                      $thisfile_asf['marker_object'] = array();
 520                      $thisfile_asf_markerobject     = &$thisfile_asf['marker_object'];
 521  
 522                      $thisfile_asf_markerobject['offset']               = $NextObjectOffset + $offset;
 523                      $thisfile_asf_markerobject['objectid']             = $NextObjectGUID;
 524                      $thisfile_asf_markerobject['objectid_guid']        = $NextObjectGUIDtext;
 525                      $thisfile_asf_markerobject['objectsize']           = $NextObjectSize;
 526                      $thisfile_asf_markerobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 527                      $offset += 16;
 528                      $thisfile_asf_markerobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_markerobject['reserved']);
 529                      if ($thisfile_asf_markerobject['reserved'] != $this->GUIDtoBytestring('4CFEDB20-75F6-11CF-9C0F-00A0C90349CB')) {
 530                          $this->warning('marker_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_markerobject['reserved_1']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4CFEDB20-75F6-11CF-9C0F-00A0C90349CB}');
 531                          break;
 532                      }
 533                      $thisfile_asf_markerobject['markers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 534                      $offset += 4;
 535                      $thisfile_asf_markerobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 536                      $offset += 2;
 537                      if ($thisfile_asf_markerobject['reserved_2'] != 0) {
 538                          $this->warning('marker_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_markerobject['reserved_2']).') does not match expected value of "0"');
 539                          break;
 540                      }
 541                      $thisfile_asf_markerobject['name_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 542                      $offset += 2;
 543                      $thisfile_asf_markerobject['name'] = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['name_length']);
 544                      $offset += $thisfile_asf_markerobject['name_length'];
 545                      for ($MarkersCounter = 0; $MarkersCounter < $thisfile_asf_markerobject['markers_count']; $MarkersCounter++) {
 546                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['offset']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 547                          $offset += 8;
 548                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['presentation_time']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 549                          $offset += 8;
 550                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length']              = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 551                          $offset += 2;
 552                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['send_time']                 = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 553                          $offset += 4;
 554                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['flags']                     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 555                          $offset += 4;
 556                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 557                          $offset += 4;
 558                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description']        = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']);
 559                          $offset += $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
 560                          $PaddingLength = $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length'] - 4 -  4 - 4 - $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
 561                          if ($PaddingLength > 0) {
 562                              $thisfile_asf_markerobject['markers'][$MarkersCounter]['padding']               = substr($ASFHeaderData, $offset, $PaddingLength);
 563                              $offset += $PaddingLength;
 564                          }
 565                      }
 566                      break;
 567  
 568                  case GETID3_ASF_Bitrate_Mutual_Exclusion_Object:
 569                      // Bitrate Mutual Exclusion Object: (optional)
 570                      // Field Name                   Field Type   Size (bits)
 571                      // Object ID                    GUID         128             // GUID for Bitrate Mutual Exclusion object - GETID3_ASF_Bitrate_Mutual_Exclusion_Object
 572                      // Object Size                  QWORD        64              // size of Bitrate Mutual Exclusion object, including 42 bytes of Bitrate Mutual Exclusion Object header
 573                      // Exlusion Type                GUID         128             // nature of mutual exclusion relationship. one of: (GETID3_ASF_Mutex_Bitrate, GETID3_ASF_Mutex_Unknown)
 574                      // Stream Numbers Count         WORD         16              // number of video streams
 575                      // Stream Numbers               WORD         variable        // array of mutually exclusive video stream numbers. 1 <= valid <= 127
 576  
 577                      // shortcut
 578                      $thisfile_asf['bitrate_mutual_exclusion_object'] = array();
 579                      $thisfile_asf_bitratemutualexclusionobject       = &$thisfile_asf['bitrate_mutual_exclusion_object'];
 580  
 581                      $thisfile_asf_bitratemutualexclusionobject['offset']               = $NextObjectOffset + $offset;
 582                      $thisfile_asf_bitratemutualexclusionobject['objectid']             = $NextObjectGUID;
 583                      $thisfile_asf_bitratemutualexclusionobject['objectid_guid']        = $NextObjectGUIDtext;
 584                      $thisfile_asf_bitratemutualexclusionobject['objectsize']           = $NextObjectSize;
 585                      $thisfile_asf_bitratemutualexclusionobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 586                      $thisfile_asf_bitratemutualexclusionobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']);
 587                      $offset += 16;
 588                      if (($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Bitrate) && ($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Unknown)) {
 589                          $this->warning('bitrate_mutual_exclusion_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']).'} does not match expected "GETID3_ASF_Mutex_Bitrate" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Bitrate).'} or  "GETID3_ASF_Mutex_Unknown" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Unknown).'}');
 590                          //return false;
 591                          break;
 592                      }
 593                      $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 594                      $offset += 2;
 595                      for ($StreamNumberCounter = 0; $StreamNumberCounter < $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count']; $StreamNumberCounter++) {
 596                          $thisfile_asf_bitratemutualexclusionobject['stream_numbers'][$StreamNumberCounter] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 597                          $offset += 2;
 598                      }
 599                      break;
 600  
 601                  case GETID3_ASF_Error_Correction_Object:
 602                      // Error Correction Object: (optional, one only)
 603                      // Field Name                   Field Type   Size (bits)
 604                      // Object ID                    GUID         128             // GUID for Error Correction object - GETID3_ASF_Error_Correction_Object
 605                      // Object Size                  QWORD        64              // size of Error Correction object, including 44 bytes of Error Correction Object header
 606                      // Error Correction Type        GUID         128             // type of error correction. one of: (GETID3_ASF_No_Error_Correction, GETID3_ASF_Audio_Spread)
 607                      // Error Correction Data Length DWORD        32              // number of bytes in Error Correction Data field
 608                      // Error Correction Data        BYTESTREAM   variable        // structure depends on value of Error Correction Type field
 609  
 610                      // shortcut
 611                      $thisfile_asf['error_correction_object'] = array();
 612                      $thisfile_asf_errorcorrectionobject      = &$thisfile_asf['error_correction_object'];
 613  
 614                      $thisfile_asf_errorcorrectionobject['offset']                = $NextObjectOffset + $offset;
 615                      $thisfile_asf_errorcorrectionobject['objectid']              = $NextObjectGUID;
 616                      $thisfile_asf_errorcorrectionobject['objectid_guid']         = $NextObjectGUIDtext;
 617                      $thisfile_asf_errorcorrectionobject['objectsize']            = $NextObjectSize;
 618                      $thisfile_asf_errorcorrectionobject['error_correction_type'] = substr($ASFHeaderData, $offset, 16);
 619                      $offset += 16;
 620                      $thisfile_asf_errorcorrectionobject['error_correction_guid'] = $this->BytestringToGUID($thisfile_asf_errorcorrectionobject['error_correction_type']);
 621                      $thisfile_asf_errorcorrectionobject['error_correction_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 622                      $offset += 4;
 623                      switch ($thisfile_asf_errorcorrectionobject['error_correction_type']) {
 624                          case GETID3_ASF_No_Error_Correction:
 625                              // should be no data, but just in case there is, skip to the end of the field
 626                              $offset += $thisfile_asf_errorcorrectionobject['error_correction_data_length'];
 627                              break;
 628  
 629                          case GETID3_ASF_Audio_Spread:
 630                              // Field Name                   Field Type   Size (bits)
 631                              // Span                         BYTE         8               // number of packets over which audio will be spread.
 632                              // Virtual Packet Length        WORD         16              // size of largest audio payload found in audio stream
 633                              // Virtual Chunk Length         WORD         16              // size of largest audio payload found in audio stream
 634                              // Silence Data Length          WORD         16              // number of bytes in Silence Data field
 635                              // Silence Data                 BYTESTREAM   variable        // hardcoded: 0x00 * (Silence Data Length) bytes
 636  
 637                              $thisfile_asf_errorcorrectionobject['span']                  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 1));
 638                              $offset += 1;
 639                              $thisfile_asf_errorcorrectionobject['virtual_packet_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 640                              $offset += 2;
 641                              $thisfile_asf_errorcorrectionobject['virtual_chunk_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 642                              $offset += 2;
 643                              $thisfile_asf_errorcorrectionobject['silence_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 644                              $offset += 2;
 645                              $thisfile_asf_errorcorrectionobject['silence_data']          = substr($ASFHeaderData, $offset, $thisfile_asf_errorcorrectionobject['silence_data_length']);
 646                              $offset += $thisfile_asf_errorcorrectionobject['silence_data_length'];
 647                              break;
 648  
 649                          default:
 650                              $this->warning('error_correction_object.error_correction_type GUID {'.$this->BytestringToGUID($thisfile_asf_errorcorrectionobject['reserved']).'} does not match expected "GETID3_ASF_No_Error_Correction" GUID {'.$this->BytestringToGUID(GETID3_ASF_No_Error_Correction).'} or  "GETID3_ASF_Audio_Spread" GUID {'.$this->BytestringToGUID(GETID3_ASF_Audio_Spread).'}');
 651                              //return false;
 652                              break;
 653                      }
 654  
 655                      break;
 656  
 657                  case GETID3_ASF_Content_Description_Object:
 658                      // Content Description Object: (optional, one only)
 659                      // Field Name                   Field Type   Size (bits)
 660                      // Object ID                    GUID         128             // GUID for Content Description object - GETID3_ASF_Content_Description_Object
 661                      // Object Size                  QWORD        64              // size of Content Description object, including 34 bytes of Content Description Object header
 662                      // Title Length                 WORD         16              // number of bytes in Title field
 663                      // Author Length                WORD         16              // number of bytes in Author field
 664                      // Copyright Length             WORD         16              // number of bytes in Copyright field
 665                      // Description Length           WORD         16              // number of bytes in Description field
 666                      // Rating Length                WORD         16              // number of bytes in Rating field
 667                      // Title                        WCHAR        16              // array of Unicode characters - Title
 668                      // Author                       WCHAR        16              // array of Unicode characters - Author
 669                      // Copyright                    WCHAR        16              // array of Unicode characters - Copyright
 670                      // Description                  WCHAR        16              // array of Unicode characters - Description
 671                      // Rating                       WCHAR        16              // array of Unicode characters - Rating
 672  
 673                      // shortcut
 674                      $thisfile_asf['content_description_object'] = array();
 675                      $thisfile_asf_contentdescriptionobject      = &$thisfile_asf['content_description_object'];
 676  
 677                      $thisfile_asf_contentdescriptionobject['offset']                = $NextObjectOffset + $offset;
 678                      $thisfile_asf_contentdescriptionobject['objectid']              = $NextObjectGUID;
 679                      $thisfile_asf_contentdescriptionobject['objectid_guid']         = $NextObjectGUIDtext;
 680                      $thisfile_asf_contentdescriptionobject['objectsize']            = $NextObjectSize;
 681                      $thisfile_asf_contentdescriptionobject['title_length']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 682                      $offset += 2;
 683                      $thisfile_asf_contentdescriptionobject['author_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 684                      $offset += 2;
 685                      $thisfile_asf_contentdescriptionobject['copyright_length']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 686                      $offset += 2;
 687                      $thisfile_asf_contentdescriptionobject['description_length']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 688                      $offset += 2;
 689                      $thisfile_asf_contentdescriptionobject['rating_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 690                      $offset += 2;
 691                      $thisfile_asf_contentdescriptionobject['title']                 = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['title_length']);
 692                      $offset += $thisfile_asf_contentdescriptionobject['title_length'];
 693                      $thisfile_asf_contentdescriptionobject['author']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['author_length']);
 694                      $offset += $thisfile_asf_contentdescriptionobject['author_length'];
 695                      $thisfile_asf_contentdescriptionobject['copyright']             = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['copyright_length']);
 696                      $offset += $thisfile_asf_contentdescriptionobject['copyright_length'];
 697                      $thisfile_asf_contentdescriptionobject['description']           = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['description_length']);
 698                      $offset += $thisfile_asf_contentdescriptionobject['description_length'];
 699                      $thisfile_asf_contentdescriptionobject['rating']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['rating_length']);
 700                      $offset += $thisfile_asf_contentdescriptionobject['rating_length'];
 701  
 702                      $ASFcommentKeysToCopy = array('title'=>'title', 'author'=>'artist', 'copyright'=>'copyright', 'description'=>'comment', 'rating'=>'rating');
 703                      foreach ($ASFcommentKeysToCopy as $keytocopyfrom => $keytocopyto) {
 704                          if (!empty($thisfile_asf_contentdescriptionobject[$keytocopyfrom])) {
 705                              $thisfile_asf_comments[$keytocopyto][] = $this->TrimTerm($thisfile_asf_contentdescriptionobject[$keytocopyfrom]);
 706                          }
 707                      }
 708                      break;
 709  
 710                  case GETID3_ASF_Extended_Content_Description_Object:
 711                      // Extended Content Description Object: (optional, one only)
 712                      // Field Name                   Field Type   Size (bits)
 713                      // Object ID                    GUID         128             // GUID for Extended Content Description object - GETID3_ASF_Extended_Content_Description_Object
 714                      // Object Size                  QWORD        64              // size of ExtendedContent Description object, including 26 bytes of Extended Content Description Object header
 715                      // Content Descriptors Count    WORD         16              // number of entries in Content Descriptors list
 716                      // Content Descriptors          array of:    variable        //
 717                      // * Descriptor Name Length     WORD         16              // size in bytes of Descriptor Name field
 718                      // * Descriptor Name            WCHAR        variable        // array of Unicode characters - Descriptor Name
 719                      // * Descriptor Value Data Type WORD         16              // Lookup array:
 720                                                                                      // 0x0000 = Unicode String (variable length)
 721                                                                                      // 0x0001 = BYTE array     (variable length)
 722                                                                                      // 0x0002 = BOOL           (DWORD, 32 bits)
 723                                                                                      // 0x0003 = DWORD          (DWORD, 32 bits)
 724                                                                                      // 0x0004 = QWORD          (QWORD, 64 bits)
 725                                                                                      // 0x0005 = WORD           (WORD,  16 bits)
 726                      // * Descriptor Value Length    WORD         16              // number of bytes stored in Descriptor Value field
 727                      // * Descriptor Value           variable     variable        // value for Content Descriptor
 728  
 729                      // shortcut
 730                      $thisfile_asf['extended_content_description_object'] = array();
 731                      $thisfile_asf_extendedcontentdescriptionobject       = &$thisfile_asf['extended_content_description_object'];
 732  
 733                      $thisfile_asf_extendedcontentdescriptionobject['offset']                    = $NextObjectOffset + $offset;
 734                      $thisfile_asf_extendedcontentdescriptionobject['objectid']                  = $NextObjectGUID;
 735                      $thisfile_asf_extendedcontentdescriptionobject['objectid_guid']             = $NextObjectGUIDtext;
 736                      $thisfile_asf_extendedcontentdescriptionobject['objectsize']                = $NextObjectSize;
 737                      $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 738                      $offset += 2;
 739                      for ($ExtendedContentDescriptorsCounter = 0; $ExtendedContentDescriptorsCounter < $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count']; $ExtendedContentDescriptorsCounter++) {
 740                          // shortcut
 741                          $thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter] = array();
 742                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current                 = &$thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter];
 743  
 744                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['base_offset']  = $offset + 30;
 745                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 746                          $offset += 2;
 747                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']         = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']);
 748                          $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length'];
 749                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 750                          $offset += 2;
 751                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 752                          $offset += 2;
 753                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']        = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length']);
 754                          $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'];
 755                          switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
 756                              case 0x0000: // Unicode string
 757                                  break;
 758  
 759                              case 0x0001: // BYTE array
 760                                  // do nothing
 761                                  break;
 762  
 763                              case 0x0002: // BOOL
 764                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = (bool) getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 765                                  break;
 766  
 767                              case 0x0003: // DWORD
 768                              case 0x0004: // QWORD
 769                              case 0x0005: // WORD
 770                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 771                                  break;
 772  
 773                              default:
 774                                  $this->warning('extended_content_description.content_descriptors.'.$ExtendedContentDescriptorsCounter.'.value_type is invalid ('.$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type'].')');
 775                                  //return false;
 776                                  break;
 777                          }
 778                          switch ($this->TrimConvert(strtolower($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']))) {
 779  
 780                              case 'wm/albumartist':
 781                              case 'artist':
 782                                  // Note: not 'artist', that comes from 'author' tag
 783                                  $thisfile_asf_comments['albumartist'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 784                                  break;
 785  
 786                              case 'wm/albumtitle':
 787                              case 'album':
 788                                  $thisfile_asf_comments['album']  = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 789                                  break;
 790  
 791                              case 'wm/genre':
 792                              case 'genre':
 793                                  $thisfile_asf_comments['genre'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 794                                  break;
 795  
 796                              case 'wm/partofset':
 797                                  $thisfile_asf_comments['partofset'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 798                                  break;
 799  
 800                              case 'wm/tracknumber':
 801                              case 'tracknumber':
 802                                  // be careful casting to int: casting unicode strings to int gives unexpected results (stops parsing at first non-numeric character)
 803                                  $thisfile_asf_comments['track_number'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 804                                  foreach ($thisfile_asf_comments['track_number'] as $key => $value) {
 805                                      if (preg_match('/^[0-9\x00]+$/', $value)) {
 806                                          $thisfile_asf_comments['track_number'][$key] = intval(str_replace("\x00", '', $value));
 807                                      }
 808                                  }
 809                                  break;
 810  
 811                              case 'wm/track':
 812                                  if (empty($thisfile_asf_comments['track_number'])) {
 813                                      $thisfile_asf_comments['track_number'] = array(1 + (int) $this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 814                                  }
 815                                  break;
 816  
 817                              case 'wm/year':
 818                              case 'year':
 819                              case 'date':
 820                                  $thisfile_asf_comments['year'] = array( $this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 821                                  break;
 822  
 823                              case 'wm/lyrics':
 824                              case 'lyrics':
 825                                  $thisfile_asf_comments['lyrics'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 826                                  break;
 827  
 828                              case 'isvbr':
 829                                  if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']) {
 830                                      $thisfile_audio['bitrate_mode'] = 'vbr';
 831                                      $thisfile_video['bitrate_mode'] = 'vbr';
 832                                  }
 833                                  break;
 834  
 835                              case 'id3':
 836                                  $this->getid3->include_module('tag.id3v2');
 837  
 838                                  $getid3_id3v2 = new getid3_id3v2($this->getid3);
 839                                  $getid3_id3v2->AnalyzeString($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 840                                  unset($getid3_id3v2);
 841  
 842                                  if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] > 1024) {
 843                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = '<value too large to display>';
 844                                  }
 845                                  break;
 846  
 847                              case 'wm/encodingtime':
 848                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 849                                  $thisfile_asf_comments['encoding_time_unix'] = array($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix']);
 850                                  break;
 851  
 852                              case 'wm/picture':
 853                                  $WMpicture = $this->ASF_WMpicture($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 854                                  foreach ($WMpicture as $key => $value) {
 855                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current[$key] = $value;
 856                                  }
 857                                  unset($WMpicture);
 858  /*
 859                                  $wm_picture_offset = 0;
 860                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 1));
 861                                  $wm_picture_offset += 1;
 862                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type']    = self::WMpictureTypeLookup($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id']);
 863                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_size']    = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 4));
 864                                  $wm_picture_offset += 4;
 865  
 866                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
 867                                  do {
 868                                      $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
 869                                      $wm_picture_offset += 2;
 870                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] .= $next_byte_pair;
 871                                  } while ($next_byte_pair !== "\x00\x00");
 872  
 873                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] = '';
 874                                  do {
 875                                      $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
 876                                      $wm_picture_offset += 2;
 877                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] .= $next_byte_pair;
 878                                  } while ($next_byte_pair !== "\x00\x00");
 879  
 880                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['dataoffset'] = $wm_picture_offset;
 881                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'] = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset);
 882                                  unset($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 883  
 884                                  $imageinfo = array();
 885                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
 886                                  $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], $imageinfo);
 887                                  unset($imageinfo);
 888                                  if (!empty($imagechunkcheck)) {
 889                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
 890                                  }
 891                                  if (!isset($thisfile_asf_comments['picture'])) {
 892                                      $thisfile_asf_comments['picture'] = array();
 893                                  }
 894                                  $thisfile_asf_comments['picture'][] = array('data'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], 'image_mime'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime']);
 895  */
 896                                  break;
 897  
 898                              default:
 899                                  switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
 900                                      case 0: // Unicode string
 901                                          if (substr($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']), 0, 3) == 'WM/') {
 902                                              $thisfile_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'])))] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 903                                          }
 904                                          break;
 905  
 906                                      case 1:
 907                                          break;
 908                                  }
 909                                  break;
 910                          }
 911  
 912                      }
 913                      break;
 914  
 915                  case GETID3_ASF_Stream_Bitrate_Properties_Object:
 916                      // Stream Bitrate Properties Object: (optional, one only)
 917                      // Field Name                   Field Type   Size (bits)
 918                      // Object ID                    GUID         128             // GUID for Stream Bitrate Properties object - GETID3_ASF_Stream_Bitrate_Properties_Object
 919                      // Object Size                  QWORD        64              // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header
 920                      // Bitrate Records Count        WORD         16              // number of records in Bitrate Records
 921                      // Bitrate Records              array of:    variable        //
 922                      // * Flags                      WORD         16              //
 923                      // * * Stream Number            bits         7  (0x007F)     // number of this stream
 924                      // * * Reserved                 bits         9  (0xFF80)     // hardcoded: 0
 925                      // * Average Bitrate            DWORD        32              // in bits per second
 926  
 927                      // shortcut
 928                      $thisfile_asf['stream_bitrate_properties_object'] = array();
 929                      $thisfile_asf_streambitratepropertiesobject       = &$thisfile_asf['stream_bitrate_properties_object'];
 930  
 931                      $thisfile_asf_streambitratepropertiesobject['offset']                    = $NextObjectOffset + $offset;
 932                      $thisfile_asf_streambitratepropertiesobject['objectid']                  = $NextObjectGUID;
 933                      $thisfile_asf_streambitratepropertiesobject['objectid_guid']             = $NextObjectGUIDtext;
 934                      $thisfile_asf_streambitratepropertiesobject['objectsize']                = $NextObjectSize;
 935                      $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 936                      $offset += 2;
 937                      for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
 938                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 939                          $offset += 2;
 940                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags']['stream_number'] = $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] & 0x007F;
 941                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 942                          $offset += 4;
 943                      }
 944                      break;
 945  
 946                  case GETID3_ASF_Padding_Object:
 947                      // Padding Object: (optional)
 948                      // Field Name                   Field Type   Size (bits)
 949                      // Object ID                    GUID         128             // GUID for Padding object - GETID3_ASF_Padding_Object
 950                      // Object Size                  QWORD        64              // size of Padding object, including 24 bytes of ASF Padding Object header
 951                      // Padding Data                 BYTESTREAM   variable        // ignore
 952  
 953                      // shortcut
 954                      $thisfile_asf['padding_object'] = array();
 955                      $thisfile_asf_paddingobject     = &$thisfile_asf['padding_object'];
 956  
 957                      $thisfile_asf_paddingobject['offset']                    = $NextObjectOffset + $offset;
 958                      $thisfile_asf_paddingobject['objectid']                  = $NextObjectGUID;
 959                      $thisfile_asf_paddingobject['objectid_guid']             = $NextObjectGUIDtext;
 960                      $thisfile_asf_paddingobject['objectsize']                = $NextObjectSize;
 961                      $thisfile_asf_paddingobject['padding_length']            = $thisfile_asf_paddingobject['objectsize'] - 16 - 8;
 962                      $thisfile_asf_paddingobject['padding']                   = substr($ASFHeaderData, $offset, $thisfile_asf_paddingobject['padding_length']);
 963                      $offset += ($NextObjectSize - 16 - 8);
 964                      break;
 965  
 966                  case GETID3_ASF_Extended_Content_Encryption_Object:
 967                  case GETID3_ASF_Content_Encryption_Object:
 968                      // WMA DRM - just ignore
 969                      $offset += ($NextObjectSize - 16 - 8);
 970                      break;
 971  
 972                  default:
 973                      // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
 974                      if ($this->GUIDname($NextObjectGUIDtext)) {
 975                          $this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8));
 976                      } else {
 977                          $this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8));
 978                      }
 979                      $offset += ($NextObjectSize - 16 - 8);
 980                      break;
 981              }
 982          }
 983          if (isset($thisfile_asf_streambitratepropertiesobject['bitrate_records_count'])) {
 984              $ASFbitrateAudio = 0;
 985              $ASFbitrateVideo = 0;
 986              for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
 987                  if (isset($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter])) {
 988                      switch ($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter]['type_raw']) {
 989                          case 1:
 990                              $ASFbitrateVideo += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
 991                              break;
 992  
 993                          case 2:
 994                              $ASFbitrateAudio += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
 995                              break;
 996  
 997                          default:
 998                              // do nothing
 999                              break;
1000                      }
1001                  }
1002              }
1003              if ($ASFbitrateAudio > 0) {
1004                  $thisfile_audio['bitrate'] = $ASFbitrateAudio;
1005              }
1006              if ($ASFbitrateVideo > 0) {
1007                  $thisfile_video['bitrate'] = $ASFbitrateVideo;
1008              }
1009          }
1010          if (isset($thisfile_asf['stream_properties_object']) && is_array($thisfile_asf['stream_properties_object'])) {
1011  
1012              $thisfile_audio['bitrate'] = 0;
1013              $thisfile_video['bitrate'] = 0;
1014  
1015              foreach ($thisfile_asf['stream_properties_object'] as $streamnumber => $streamdata) {
1016  
1017                  switch ($streamdata['stream_type']) {
1018                      case GETID3_ASF_Audio_Media:
1019                          // Field Name                   Field Type   Size (bits)
1020                          // Codec ID / Format Tag        WORD         16              // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure
1021                          // Number of Channels           WORD         16              // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure
1022                          // Samples Per Second           DWORD        32              // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure
1023                          // Average number of Bytes/sec  DWORD        32              // bytes/sec of audio stream  - defined as nAvgBytesPerSec field of WAVEFORMATEX structure
1024                          // Block Alignment              WORD         16              // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure
1025                          // Bits per sample              WORD         16              // bits per sample of mono data. set to zero for variable bitrate codecs. defined as wBitsPerSample field of WAVEFORMATEX structure
1026                          // Codec Specific Data Size     WORD         16              // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure
1027                          // Codec Specific Data          BYTESTREAM   variable        // array of codec-specific data bytes
1028  
1029                          // shortcut
1030                          $thisfile_asf['audio_media'][$streamnumber] = array();
1031                          $thisfile_asf_audiomedia_currentstream      = &$thisfile_asf['audio_media'][$streamnumber];
1032  
1033                          $audiomediaoffset = 0;
1034  
1035                          $thisfile_asf_audiomedia_currentstream = getid3_riff::parseWAVEFORMATex(substr($streamdata['type_specific_data'], $audiomediaoffset, 16));
1036                          $audiomediaoffset += 16;
1037  
1038                          $thisfile_audio['lossless'] = false;
1039                          switch ($thisfile_asf_audiomedia_currentstream['raw']['wFormatTag']) {
1040                              case 0x0001: // PCM
1041                              case 0x0163: // WMA9 Lossless
1042                                  $thisfile_audio['lossless'] = true;
1043                                  break;
1044                          }
1045  
1046                          if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1047                              foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1048                                  if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1049                                      $thisfile_asf_audiomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1050                                      $thisfile_audio['bitrate'] += $dataarray['bitrate'];
1051                                      break;
1052                                  }
1053                              }
1054                          } else {
1055                              if (!empty($thisfile_asf_audiomedia_currentstream['bytes_sec'])) {
1056                                  $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bytes_sec'] * 8;
1057                              } elseif (!empty($thisfile_asf_audiomedia_currentstream['bitrate'])) {
1058                                  $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bitrate'];
1059                              }
1060                          }
1061                          $thisfile_audio['streams'][$streamnumber]                = $thisfile_asf_audiomedia_currentstream;
1062                          $thisfile_audio['streams'][$streamnumber]['wformattag']  = $thisfile_asf_audiomedia_currentstream['raw']['wFormatTag'];
1063                          $thisfile_audio['streams'][$streamnumber]['lossless']    = $thisfile_audio['lossless'];
1064                          $thisfile_audio['streams'][$streamnumber]['bitrate']     = $thisfile_audio['bitrate'];
1065                          $thisfile_audio['streams'][$streamnumber]['dataformat']  = 'wma';
1066                          unset($thisfile_audio['streams'][$streamnumber]['raw']);
1067  
1068                          $thisfile_asf_audiomedia_currentstream['codec_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $audiomediaoffset, 2));
1069                          $audiomediaoffset += 2;
1070                          $thisfile_asf_audiomedia_currentstream['codec_data']      = substr($streamdata['type_specific_data'], $audiomediaoffset, $thisfile_asf_audiomedia_currentstream['codec_data_size']);
1071                          $audiomediaoffset += $thisfile_asf_audiomedia_currentstream['codec_data_size'];
1072  
1073                          break;
1074  
1075                      case GETID3_ASF_Video_Media:
1076                          // Field Name                   Field Type   Size (bits)
1077                          // Encoded Image Width          DWORD        32              // width of image in pixels
1078                          // Encoded Image Height         DWORD        32              // height of image in pixels
1079                          // Reserved Flags               BYTE         8               // hardcoded: 0x02
1080                          // Format Data Size             WORD         16              // size of Format Data field in bytes
1081                          // Format Data                  array of:    variable        //
1082                          // * Format Data Size           DWORD        32              // number of bytes in Format Data field, in bytes - defined as biSize field of BITMAPINFOHEADER structure
1083                          // * Image Width                LONG         32              // width of encoded image in pixels - defined as biWidth field of BITMAPINFOHEADER structure
1084                          // * Image Height               LONG         32              // height of encoded image in pixels - defined as biHeight field of BITMAPINFOHEADER structure
1085                          // * Reserved                   WORD         16              // hardcoded: 0x0001 - defined as biPlanes field of BITMAPINFOHEADER structure
1086                          // * Bits Per Pixel Count       WORD         16              // bits per pixel - defined as biBitCount field of BITMAPINFOHEADER structure
1087                          // * Compression ID             FOURCC       32              // fourcc of video codec - defined as biCompression field of BITMAPINFOHEADER structure
1088                          // * Image Size                 DWORD        32              // image size in bytes - defined as biSizeImage field of BITMAPINFOHEADER structure
1089                          // * Horizontal Pixels / Meter  DWORD        32              // horizontal resolution of target device in pixels per meter - defined as biXPelsPerMeter field of BITMAPINFOHEADER structure
1090                          // * Vertical Pixels / Meter    DWORD        32              // vertical resolution of target device in pixels per meter - defined as biYPelsPerMeter field of BITMAPINFOHEADER structure
1091                          // * Colors Used Count          DWORD        32              // number of color indexes in the color table that are actually used - defined as biClrUsed field of BITMAPINFOHEADER structure
1092                          // * Important Colors Count     DWORD        32              // number of color index required for displaying bitmap. if zero, all colors are required. defined as biClrImportant field of BITMAPINFOHEADER structure
1093                          // * Codec Specific Data        BYTESTREAM   variable        // array of codec-specific data bytes
1094  
1095                          // shortcut
1096                          $thisfile_asf['video_media'][$streamnumber] = array();
1097                          $thisfile_asf_videomedia_currentstream      = &$thisfile_asf['video_media'][$streamnumber];
1098  
1099                          $videomediaoffset = 0;
1100                          $thisfile_asf_videomedia_currentstream['image_width']                     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1101                          $videomediaoffset += 4;
1102                          $thisfile_asf_videomedia_currentstream['image_height']                    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1103                          $videomediaoffset += 4;
1104                          $thisfile_asf_videomedia_currentstream['flags']                           = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 1));
1105                          $videomediaoffset += 1;
1106                          $thisfile_asf_videomedia_currentstream['format_data_size']                = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1107                          $videomediaoffset += 2;
1108                          $thisfile_asf_videomedia_currentstream['format_data']['format_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1109                          $videomediaoffset += 4;
1110                          $thisfile_asf_videomedia_currentstream['format_data']['image_width']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1111                          $videomediaoffset += 4;
1112                          $thisfile_asf_videomedia_currentstream['format_data']['image_height']     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1113                          $videomediaoffset += 4;
1114                          $thisfile_asf_videomedia_currentstream['format_data']['reserved']         = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1115                          $videomediaoffset += 2;
1116                          $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel']   = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1117                          $videomediaoffset += 2;
1118                          $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']     = substr($streamdata['type_specific_data'], $videomediaoffset, 4);
1119                          $videomediaoffset += 4;
1120                          $thisfile_asf_videomedia_currentstream['format_data']['image_size']       = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1121                          $videomediaoffset += 4;
1122                          $thisfile_asf_videomedia_currentstream['format_data']['horizontal_pels']  = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1123                          $videomediaoffset += 4;
1124                          $thisfile_asf_videomedia_currentstream['format_data']['vertical_pels']    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1125                          $videomediaoffset += 4;
1126                          $thisfile_asf_videomedia_currentstream['format_data']['colors_used']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1127                          $videomediaoffset += 4;
1128                          $thisfile_asf_videomedia_currentstream['format_data']['colors_important'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1129                          $videomediaoffset += 4;
1130                          $thisfile_asf_videomedia_currentstream['format_data']['codec_data']       = substr($streamdata['type_specific_data'], $videomediaoffset);
1131  
1132                          if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1133                              foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1134                                  if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1135                                      $thisfile_asf_videomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1136                                      $thisfile_video['streams'][$streamnumber]['bitrate'] = $dataarray['bitrate'];
1137                                      $thisfile_video['bitrate'] += $dataarray['bitrate'];
1138                                      break;
1139                                  }
1140                              }
1141                          }
1142  
1143                          $thisfile_asf_videomedia_currentstream['format_data']['codec'] = getid3_riff::fourccLookup($thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']);
1144  
1145                          $thisfile_video['streams'][$streamnumber]['fourcc']          = $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc'];
1146                          $thisfile_video['streams'][$streamnumber]['codec']           = $thisfile_asf_videomedia_currentstream['format_data']['codec'];
1147                          $thisfile_video['streams'][$streamnumber]['resolution_x']    = $thisfile_asf_videomedia_currentstream['image_width'];
1148                          $thisfile_video['streams'][$streamnumber]['resolution_y']    = $thisfile_asf_videomedia_currentstream['image_height'];
1149                          $thisfile_video['streams'][$streamnumber]['bits_per_sample'] = $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel'];
1150                          break;
1151  
1152                      default:
1153                          break;
1154                  }
1155              }
1156          }
1157  
1158          while ($this->ftell() < $info['avdataend']) {
1159              $NextObjectDataHeader = $this->fread(24);
1160              $offset = 0;
1161              $NextObjectGUID = substr($NextObjectDataHeader, 0, 16);
1162              $offset += 16;
1163              $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
1164              $NextObjectSize = getid3_lib::LittleEndian2Int(substr($NextObjectDataHeader, $offset, 8));
1165              $offset += 8;
1166  
1167              switch ($NextObjectGUID) {
1168                  case GETID3_ASF_Data_Object:
1169                      // Data Object: (mandatory, one only)
1170                      // Field Name                       Field Type   Size (bits)
1171                      // Object ID                        GUID         128             // GUID for Data object - GETID3_ASF_Data_Object
1172                      // Object Size                      QWORD        64              // size of Data object, including 50 bytes of Data Object header. may be 0 if FilePropertiesObject.BroadcastFlag == 1
1173                      // File ID                          GUID         128             // unique identifier. identical to File ID field in Header Object
1174                      // Total Data Packets               QWORD        64              // number of Data Packet entries in Data Object. invalid if FilePropertiesObject.BroadcastFlag == 1
1175                      // Reserved                         WORD         16              // hardcoded: 0x0101
1176  
1177                      // shortcut
1178                      $thisfile_asf['data_object'] = array();
1179                      $thisfile_asf_dataobject     = &$thisfile_asf['data_object'];
1180  
1181                      $DataObjectData = $NextObjectDataHeader.$this->fread(50 - 24);
1182                      $offset = 24;
1183  
1184                      $thisfile_asf_dataobject['objectid']           = $NextObjectGUID;
1185                      $thisfile_asf_dataobject['objectid_guid']      = $NextObjectGUIDtext;
1186                      $thisfile_asf_dataobject['objectsize']         = $NextObjectSize;
1187  
1188                      $thisfile_asf_dataobject['fileid']             = substr($DataObjectData, $offset, 16);
1189                      $offset += 16;
1190                      $thisfile_asf_dataobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_dataobject['fileid']);
1191                      $thisfile_asf_dataobject['total_data_packets'] = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 8));
1192                      $offset += 8;
1193                      $thisfile_asf_dataobject['reserved']           = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 2));
1194                      $offset += 2;
1195                      if ($thisfile_asf_dataobject['reserved'] != 0x0101) {
1196                          $this->warning('data_object.reserved ('.getid3_lib::PrintHexBytes($thisfile_asf_dataobject['reserved']).') does not match expected value of "0x0101"');
1197                          //return false;
1198                          break;
1199                      }
1200  
1201                      // Data Packets                     array of:    variable        //
1202                      // * Error Correction Flags         BYTE         8               //
1203                      // * * Error Correction Data Length bits         4               // if Error Correction Length Type == 00, size of Error Correction Data in bytes, else hardcoded: 0000
1204                      // * * Opaque Data Present          bits         1               //
1205                      // * * Error Correction Length Type bits         2               // number of bits for size of the error correction data. hardcoded: 00
1206                      // * * Error Correction Present     bits         1               // If set, use Opaque Data Packet structure, else use Payload structure
1207                      // * Error Correction Data
1208  
1209                      $info['avdataoffset'] = $this->ftell();
1210                      $this->fseek(($thisfile_asf_dataobject['objectsize'] - 50), SEEK_CUR); // skip actual audio/video data
1211                      $info['avdataend'] = $this->ftell();
1212                      break;
1213  
1214                  case GETID3_ASF_Simple_Index_Object:
1215                      // Simple Index Object: (optional, recommended, one per video stream)
1216                      // Field Name                       Field Type   Size (bits)
1217                      // Object ID                        GUID         128             // GUID for Simple Index object - GETID3_ASF_Data_Object
1218                      // Object Size                      QWORD        64              // size of Simple Index object, including 56 bytes of Simple Index Object header
1219                      // File ID                          GUID         128             // unique identifier. may be zero or identical to File ID field in Data Object and Header Object
1220                      // Index Entry Time Interval        QWORD        64              // interval between index entries in 100-nanosecond units
1221                      // Maximum Packet Count             DWORD        32              // maximum packet count for all index entries
1222                      // Index Entries Count              DWORD        32              // number of Index Entries structures
1223                      // Index Entries                    array of:    variable        //
1224                      // * Packet Number                  DWORD        32              // number of the Data Packet associated with this index entry
1225                      // * Packet Count                   WORD         16              // number of Data Packets to sent at this index entry
1226  
1227                      // shortcut
1228                      $thisfile_asf['simple_index_object'] = array();
1229                      $thisfile_asf_simpleindexobject      = &$thisfile_asf['simple_index_object'];
1230  
1231                      $SimpleIndexObjectData = $NextObjectDataHeader.$this->fread(56 - 24);
1232                      $offset = 24;
1233  
1234                      $thisfile_asf_simpleindexobject['objectid']                  = $NextObjectGUID;
1235                      $thisfile_asf_simpleindexobject['objectid_guid']             = $NextObjectGUIDtext;
1236                      $thisfile_asf_simpleindexobject['objectsize']                = $NextObjectSize;
1237  
1238                      $thisfile_asf_simpleindexobject['fileid']                    =                  substr($SimpleIndexObjectData, $offset, 16);
1239                      $offset += 16;
1240                      $thisfile_asf_simpleindexobject['fileid_guid']               = $this->BytestringToGUID($thisfile_asf_simpleindexobject['fileid']);
1241                      $thisfile_asf_simpleindexobject['index_entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 8));
1242                      $offset += 8;
1243                      $thisfile_asf_simpleindexobject['maximum_packet_count']      = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1244                      $offset += 4;
1245                      $thisfile_asf_simpleindexobject['index_entries_count']       = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1246                      $offset += 4;
1247  
1248                      $IndexEntriesData = $SimpleIndexObjectData.$this->fread(6 * $thisfile_asf_simpleindexobject['index_entries_count']);
1249                      for ($IndexEntriesCounter = 0; $IndexEntriesCounter < $thisfile_asf_simpleindexobject['index_entries_count']; $IndexEntriesCounter++) {
1250                          $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_number'] = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1251                          $offset += 4;
1252                          $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_count']  = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1253                          $offset += 2;
1254                      }
1255  
1256                      break;
1257  
1258                  case GETID3_ASF_Index_Object:
1259                      // 6.2 ASF top-level Index Object (optional but recommended when appropriate, 0 or 1)
1260                      // Field Name                       Field Type   Size (bits)
1261                      // Object ID                        GUID         128             // GUID for the Index Object - GETID3_ASF_Index_Object
1262                      // Object Size                      QWORD        64              // Specifies the size, in bytes, of the Index Object, including at least 34 bytes of Index Object header
1263                      // Index Entry Time Interval        DWORD        32              // Specifies the time interval between each index entry in ms.
1264                      // Index Specifiers Count           WORD         16              // Specifies the number of Index Specifiers structures in this Index Object.
1265                      // Index Blocks Count               DWORD        32              // Specifies the number of Index Blocks structures in this Index Object.
1266  
1267                      // Index Entry Time Interval        DWORD        32              // Specifies the time interval between index entries in milliseconds.  This value cannot be 0.
1268                      // Index Specifiers Count           WORD         16              // Specifies the number of entries in the Index Specifiers list.  Valid values are 1 and greater.
1269                      // Index Specifiers                 array of:    varies          //
1270                      // * Stream Number                  WORD         16              // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127.
1271                      // * Index Type                     WORD         16              // Specifies Index Type values as follows:
1272                                                                                      //   1 = Nearest Past Data Packet - indexes point to the data packet whose presentation time is closest to the index entry time.
1273                                                                                      //   2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire object or first fragment of an object.
1274                                                                                      //   3 = Nearest Past Cleanpoint. - indexes point to the closest data packet containing an entire object (or first fragment of an object) that has the Cleanpoint Flag set.
1275                                                                                      //   Nearest Past Cleanpoint is the most common type of index.
1276                      // Index Entry Count                DWORD        32              // Specifies the number of Index Entries in the block.
1277                      // * Block Positions                QWORD        varies          // Specifies a list of byte offsets of the beginnings of the blocks relative to the beginning of the first Data Packet (i.e., the beginning of the Data Object + 50 bytes). The number of entries in this list is specified by the value of the Index Specifiers Count field. The order of those byte offsets is tied to the order in which Index Specifiers are listed.
1278                      // * Index Entries                  array of:    varies          //
1279                      // * * Offsets                      DWORD        varies          // An offset value of 0xffffffff indicates an invalid offset value
1280  
1281                      // shortcut
1282                      $thisfile_asf['asf_index_object'] = array();
1283                      $thisfile_asf_asfindexobject      = &$thisfile_asf['asf_index_object'];
1284  
1285                      $ASFIndexObjectData = $NextObjectDataHeader.$this->fread(34 - 24);
1286                      $offset = 24;
1287  
1288                      $thisfile_asf_asfindexobject['objectid']                  = $NextObjectGUID;
1289                      $thisfile_asf_asfindexobject['objectid_guid']             = $NextObjectGUIDtext;
1290                      $thisfile_asf_asfindexobject['objectsize']                = $NextObjectSize;
1291  
1292                      $thisfile_asf_asfindexobject['entry_time_interval']       = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1293                      $offset += 4;
1294                      $thisfile_asf_asfindexobject['index_specifiers_count']    = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1295                      $offset += 2;
1296                      $thisfile_asf_asfindexobject['index_blocks_count']        = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1297                      $offset += 4;
1298  
1299                      $ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1300                      for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1301                          $IndexSpecifierStreamNumber = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1302                          $offset += 2;
1303                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['stream_number']   = $IndexSpecifierStreamNumber;
1304                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']      = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1305                          $offset += 2;
1306                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type_text'] = $this->ASFIndexObjectIndexTypeLookup($thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']);
1307                      }
1308  
1309                      $ASFIndexObjectData .= $this->fread(4);
1310                      $thisfile_asf_asfindexobject['index_entry_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1311                      $offset += 4;
1312  
1313                      $ASFIndexObjectData .= $this->fread(8 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1314                      for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1315                          $thisfile_asf_asfindexobject['block_positions'][$IndexSpecifiersCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 8));
1316                          $offset += 8;
1317                      }
1318  
1319                      $ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count'] * $thisfile_asf_asfindexobject['index_entry_count']);
1320                      for ($IndexEntryCounter = 0; $IndexEntryCounter < $thisfile_asf_asfindexobject['index_entry_count']; $IndexEntryCounter++) {
1321                          for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1322                              $thisfile_asf_asfindexobject['offsets'][$IndexSpecifiersCounter][$IndexEntryCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1323                              $offset += 4;
1324                          }
1325                      }
1326                      break;
1327  
1328  
1329                  default:
1330                      // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
1331                      if ($this->GUIDname($NextObjectGUIDtext)) {
1332                          $this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF body at offset '.($offset - 16 - 8));
1333                      } else {
1334                          $this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF body at offset '.($this->ftell() - 16 - 8));
1335                      }
1336                      $this->fseek(($NextObjectSize - 16 - 8), SEEK_CUR);
1337                      break;
1338              }
1339          }
1340  
1341          if (isset($thisfile_asf_codeclistobject['codec_entries']) && is_array($thisfile_asf_codeclistobject['codec_entries'])) {
1342              foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1343                  switch ($streamdata['information']) {
1344                      case 'WMV1':
1345                      case 'WMV2':
1346                      case 'WMV3':
1347                      case 'MSS1':
1348                      case 'MSS2':
1349                      case 'WMVA':
1350                      case 'WVC1':
1351                      case 'WMVP':
1352                      case 'WVP2':
1353                          $thisfile_video['dataformat'] = 'wmv';
1354                          $info['mime_type'] = 'video/x-ms-wmv';
1355                          break;
1356  
1357                      case 'MP42':
1358                      case 'MP43':
1359                      case 'MP4S':
1360                      case 'mp4s':
1361                          $thisfile_video['dataformat'] = 'asf';
1362                          $info['mime_type'] = 'video/x-ms-asf';
1363                          break;
1364  
1365                      default:
1366                          switch ($streamdata['type_raw']) {
1367                              case 1:
1368                                  if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1369                                      $thisfile_video['dataformat'] = 'wmv';
1370                                      if ($info['mime_type'] == 'video/x-ms-asf') {
1371                                          $info['mime_type'] = 'video/x-ms-wmv';
1372                                      }
1373                                  }
1374                                  break;
1375  
1376                              case 2:
1377                                  if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1378                                      $thisfile_audio['dataformat'] = 'wma';
1379                                      if ($info['mime_type'] == 'video/x-ms-asf') {
1380                                          $info['mime_type'] = 'audio/x-ms-wma';
1381                                      }
1382                                  }
1383                                  break;
1384  
1385                          }
1386                          break;
1387                  }
1388              }
1389          }
1390  
1391          switch (isset($thisfile_audio['codec']) ? $thisfile_audio['codec'] : '') {
1392              case 'MPEG Layer-3':
1393                  $thisfile_audio['dataformat'] = 'mp3';
1394                  break;
1395  
1396              default:
1397                  break;
1398          }
1399  
1400          if (isset($thisfile_asf_codeclistobject['codec_entries'])) {
1401              foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1402                  switch ($streamdata['type_raw']) {
1403  
1404                      case 1: // video
1405                          $thisfile_video['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1406                          break;
1407  
1408                      case 2: // audio
1409                          $thisfile_audio['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1410  
1411                          // AH 2003-10-01
1412                          $thisfile_audio['encoder_options'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][0]['description']);
1413  
1414                          $thisfile_audio['codec']   = $thisfile_audio['encoder'];
1415                          break;
1416  
1417                      default:
1418                          $this->warning('Unknown streamtype: [codec_list_object][codec_entries]['.$streamnumber.'][type_raw] == '.$streamdata['type_raw']);
1419                          break;
1420  
1421                  }
1422              }
1423          }
1424  
1425          if (isset($info['audio'])) {
1426              $thisfile_audio['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1427              $thisfile_audio['dataformat']         = (!empty($thisfile_audio['dataformat'])        ? $thisfile_audio['dataformat']         : 'asf');
1428          }
1429          if (!empty($thisfile_video['dataformat'])) {
1430              $thisfile_video['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1431              $thisfile_video['pixel_aspect_ratio'] = (isset($thisfile_audio['pixel_aspect_ratio']) ? $thisfile_audio['pixel_aspect_ratio'] : (float) 1);
1432              $thisfile_video['dataformat']         = (!empty($thisfile_video['dataformat'])        ? $thisfile_video['dataformat']         : 'asf');
1433          }
1434          if (!empty($thisfile_video['streams'])) {
1435              $thisfile_video['resolution_x'] = 0;
1436              $thisfile_video['resolution_y'] = 0;
1437              foreach ($thisfile_video['streams'] as $key => $valuearray) {
1438                  if (($valuearray['resolution_x'] > $thisfile_video['resolution_x']) || ($valuearray['resolution_y'] > $thisfile_video['resolution_y'])) {
1439                      $thisfile_video['resolution_x'] = $valuearray['resolution_x'];
1440                      $thisfile_video['resolution_y'] = $valuearray['resolution_y'];
1441                  }
1442              }
1443          }
1444          $info['bitrate'] = (isset($thisfile_audio['bitrate']) ? $thisfile_audio['bitrate'] : 0) + (isset($thisfile_video['bitrate']) ? $thisfile_video['bitrate'] : 0);
1445  
1446          if ((!isset($info['playtime_seconds']) || ($info['playtime_seconds'] <= 0)) && ($info['bitrate'] > 0)) {
1447              $info['playtime_seconds'] = ($info['filesize'] - $info['avdataoffset']) / ($info['bitrate'] / 8);
1448          }
1449  
1450          return true;
1451      }
1452  
1453      /**
1454       * @param int $CodecListType
1455       *
1456       * @return string
1457       */
1458  	public static function codecListObjectTypeLookup($CodecListType) {
1459          static $lookup = array(
1460              0x0001 => 'Video Codec',
1461              0x0002 => 'Audio Codec',
1462              0xFFFF => 'Unknown Codec'
1463          );
1464  
1465          return (isset($lookup[$CodecListType]) ? $lookup[$CodecListType] : 'Invalid Codec Type');
1466      }
1467  
1468      /**
1469       * @return array
1470       */
1471  	public static function KnownGUIDs() {
1472          static $GUIDarray = array(
1473              'GETID3_ASF_Extended_Stream_Properties_Object'   => '14E6A5CB-C672-4332-8399-A96952065B5A',
1474              'GETID3_ASF_Padding_Object'                      => '1806D474-CADF-4509-A4BA-9AABCB96AAE8',
1475              'GETID3_ASF_Payload_Ext_Syst_Pixel_Aspect_Ratio' => '1B1EE554-F9EA-4BC8-821A-376B74E4C4B8',
1476              'GETID3_ASF_Script_Command_Object'               => '1EFB1A30-0B62-11D0-A39B-00A0C90348F6',
1477              'GETID3_ASF_No_Error_Correction'                 => '20FB5700-5B55-11CF-A8FD-00805F5C442B',
1478              'GETID3_ASF_Content_Branding_Object'             => '2211B3FA-BD23-11D2-B4B7-00A0C955FC6E',
1479              'GETID3_ASF_Content_Encryption_Object'           => '2211B3FB-BD23-11D2-B4B7-00A0C955FC6E',
1480              'GETID3_ASF_Digital_Signature_Object'            => '2211B3FC-BD23-11D2-B4B7-00A0C955FC6E',
1481              'GETID3_ASF_Extended_Content_Encryption_Object'  => '298AE614-2622-4C17-B935-DAE07EE9289C',
1482              'GETID3_ASF_Simple_Index_Object'                 => '33000890-E5B1-11CF-89F4-00A0C90349CB',
1483              'GETID3_ASF_Degradable_JPEG_Media'               => '35907DE0-E415-11CF-A917-00805F5C442B',
1484              'GETID3_ASF_Payload_Extension_System_Timecode'   => '399595EC-8667-4E2D-8FDB-98814CE76C1E',
1485              'GETID3_ASF_Binary_Media'                        => '3AFB65E2-47EF-40F2-AC2C-70A90D71D343',
1486              'GETID3_ASF_Timecode_Index_Object'               => '3CB73FD0-0C4A-4803-953D-EDF7B6228F0C',
1487              'GETID3_ASF_Metadata_Library_Object'             => '44231C94-9498-49D1-A141-1D134E457054',
1488              'GETID3_ASF_Reserved_3'                          => '4B1ACBE3-100B-11D0-A39B-00A0C90348F6',
1489              'GETID3_ASF_Reserved_4'                          => '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB',
1490              'GETID3_ASF_Command_Media'                       => '59DACFC0-59E6-11D0-A3AC-00A0C90348F6',
1491              'GETID3_ASF_Header_Extension_Object'             => '5FBF03B5-A92E-11CF-8EE3-00C00C205365',
1492              'GETID3_ASF_Media_Object_Index_Parameters_Obj'   => '6B203BAD-3F11-4E84-ACA8-D7613DE2CFA7',
1493              'GETID3_ASF_Header_Object'                       => '75B22630-668E-11CF-A6D9-00AA0062CE6C',
1494              'GETID3_ASF_Content_Description_Object'          => '75B22633-668E-11CF-A6D9-00AA0062CE6C',
1495              'GETID3_ASF_Error_Correction_Object'             => '75B22635-668E-11CF-A6D9-00AA0062CE6C',
1496              'GETID3_ASF_Data_Object'                         => '75B22636-668E-11CF-A6D9-00AA0062CE6C',
1497              'GETID3_ASF_Web_Stream_Media_Subtype'            => '776257D4-C627-41CB-8F81-7AC7FF1C40CC',
1498              'GETID3_ASF_Stream_Bitrate_Properties_Object'    => '7BF875CE-468D-11D1-8D82-006097C9A2B2',
1499              'GETID3_ASF_Language_List_Object'                => '7C4346A9-EFE0-4BFC-B229-393EDE415C85',
1500              'GETID3_ASF_Codec_List_Object'                   => '86D15240-311D-11D0-A3A4-00A0C90348F6',
1501              'GETID3_ASF_Reserved_2'                          => '86D15241-311D-11D0-A3A4-00A0C90348F6',
1502              'GETID3_ASF_File_Properties_Object'              => '8CABDCA1-A947-11CF-8EE4-00C00C205365',
1503              'GETID3_ASF_File_Transfer_Media'                 => '91BD222C-F21C-497A-8B6D-5AA86BFC0185',
1504              'GETID3_ASF_Old_RTP_Extension_Data'              => '96800C63-4C94-11D1-837B-0080C7A37F95',
1505              'GETID3_ASF_Advanced_Mutual_Exclusion_Object'    => 'A08649CF-4775-4670-8A16-6E35357566CD',
1506              'GETID3_ASF_Bandwidth_Sharing_Object'            => 'A69609E6-517B-11D2-B6AF-00C04FD908E9',
1507              'GETID3_ASF_Reserved_1'                          => 'ABD3D211-A9BA-11cf-8EE6-00C00C205365',
1508              'GETID3_ASF_Bandwidth_Sharing_Exclusive'         => 'AF6060AA-5197-11D2-B6AF-00C04FD908E9',
1509              'GETID3_ASF_Bandwidth_Sharing_Partial'           => 'AF6060AB-5197-11D2-B6AF-00C04FD908E9',
1510              'GETID3_ASF_JFIF_Media'                          => 'B61BE100-5B4E-11CF-A8FD-00805F5C442B',
1511              'GETID3_ASF_Stream_Properties_Object'            => 'B7DC0791-A9B7-11CF-8EE6-00C00C205365',
1512              'GETID3_ASF_Video_Media'                         => 'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B',
1513              'GETID3_ASF_Audio_Spread'                        => 'BFC3CD50-618F-11CF-8BB2-00AA00B4E220',
1514              'GETID3_ASF_Metadata_Object'                     => 'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA',
1515              'GETID3_ASF_Payload_Ext_Syst_Sample_Duration'    => 'C6BD9450-867F-4907-83A3-C77921B733AD',
1516              'GETID3_ASF_Group_Mutual_Exclusion_Object'       => 'D1465A40-5A79-4338-B71B-E36B8FD6C249',
1517              'GETID3_ASF_Extended_Content_Description_Object' => 'D2D0A440-E307-11D2-97F0-00A0C95EA850',
1518              'GETID3_ASF_Stream_Prioritization_Object'        => 'D4FED15B-88D3-454F-81F0-ED5C45999E24',
1519              'GETID3_ASF_Payload_Ext_System_Content_Type'     => 'D590DC20-07BC-436C-9CF7-F3BBFBF1A4DC',
1520              'GETID3_ASF_Old_File_Properties_Object'          => 'D6E229D0-35DA-11D1-9034-00A0C90349BE',
1521              'GETID3_ASF_Old_ASF_Header_Object'               => 'D6E229D1-35DA-11D1-9034-00A0C90349BE',
1522              'GETID3_ASF_Old_ASF_Data_Object'                 => 'D6E229D2-35DA-11D1-9034-00A0C90349BE',
1523              'GETID3_ASF_Index_Object'                        => 'D6E229D3-35DA-11D1-9034-00A0C90349BE',
1524              'GETID3_ASF_Old_Stream_Properties_Object'        => 'D6E229D4-35DA-11D1-9034-00A0C90349BE',
1525              'GETID3_ASF_Old_Content_Description_Object'      => 'D6E229D5-35DA-11D1-9034-00A0C90349BE',
1526              'GETID3_ASF_Old_Script_Command_Object'           => 'D6E229D6-35DA-11D1-9034-00A0C90349BE',
1527              'GETID3_ASF_Old_Marker_Object'                   => 'D6E229D7-35DA-11D1-9034-00A0C90349BE',
1528              'GETID3_ASF_Old_Component_Download_Object'       => 'D6E229D8-35DA-11D1-9034-00A0C90349BE',
1529              'GETID3_ASF_Old_Stream_Group_Object'             => 'D6E229D9-35DA-11D1-9034-00A0C90349BE',
1530              'GETID3_ASF_Old_Scalable_Object'                 => 'D6E229DA-35DA-11D1-9034-00A0C90349BE',
1531              'GETID3_ASF_Old_Prioritization_Object'           => 'D6E229DB-35DA-11D1-9034-00A0C90349BE',
1532              'GETID3_ASF_Bitrate_Mutual_Exclusion_Object'     => 'D6E229DC-35DA-11D1-9034-00A0C90349BE',
1533              'GETID3_ASF_Old_Inter_Media_Dependency_Object'   => 'D6E229DD-35DA-11D1-9034-00A0C90349BE',
1534              'GETID3_ASF_Old_Rating_Object'                   => 'D6E229DE-35DA-11D1-9034-00A0C90349BE',
1535              'GETID3_ASF_Index_Parameters_Object'             => 'D6E229DF-35DA-11D1-9034-00A0C90349BE',
1536              'GETID3_ASF_Old_Color_Table_Object'              => 'D6E229E0-35DA-11D1-9034-00A0C90349BE',
1537              'GETID3_ASF_Old_Language_List_Object'            => 'D6E229E1-35DA-11D1-9034-00A0C90349BE',
1538              'GETID3_ASF_Old_Audio_Media'                     => 'D6E229E2-35DA-11D1-9034-00A0C90349BE',
1539              'GETID3_ASF_Old_Video_Media'                     => 'D6E229E3-35DA-11D1-9034-00A0C90349BE',
1540              'GETID3_ASF_Old_Image_Media'                     => 'D6E229E4-35DA-11D1-9034-00A0C90349BE',
1541              'GETID3_ASF_Old_Timecode_Media'                  => 'D6E229E5-35DA-11D1-9034-00A0C90349BE',
1542              'GETID3_ASF_Old_Text_Media'                      => 'D6E229E6-35DA-11D1-9034-00A0C90349BE',
1543              'GETID3_ASF_Old_MIDI_Media'                      => 'D6E229E7-35DA-11D1-9034-00A0C90349BE',
1544              'GETID3_ASF_Old_Command_Media'                   => 'D6E229E8-35DA-11D1-9034-00A0C90349BE',
1545              'GETID3_ASF_Old_No_Error_Concealment'            => 'D6E229EA-35DA-11D1-9034-00A0C90349BE',
1546              'GETID3_ASF_Old_Scrambled_Audio'                 => 'D6E229EB-35DA-11D1-9034-00A0C90349BE',
1547              'GETID3_ASF_Old_No_Color_Table'                  => 'D6E229EC-35DA-11D1-9034-00A0C90349BE',
1548              'GETID3_ASF_Old_SMPTE_Time'                      => 'D6E229ED-35DA-11D1-9034-00A0C90349BE',
1549              'GETID3_ASF_Old_ASCII_Text'                      => 'D6E229EE-35DA-11D1-9034-00A0C90349BE',
1550              'GETID3_ASF_Old_Unicode_Text'                    => 'D6E229EF-35DA-11D1-9034-00A0C90349BE',
1551              'GETID3_ASF_Old_HTML_Text'                       => 'D6E229F0-35DA-11D1-9034-00A0C90349BE',
1552              'GETID3_ASF_Old_URL_Command'                     => 'D6E229F1-35DA-11D1-9034-00A0C90349BE',
1553              'GETID3_ASF_Old_Filename_Command'                => 'D6E229F2-35DA-11D1-9034-00A0C90349BE',
1554              'GETID3_ASF_Old_ACM_Codec'                       => 'D6E229F3-35DA-11D1-9034-00A0C90349BE',
1555              'GETID3_ASF_Old_VCM_Codec'                       => 'D6E229F4-35DA-11D1-9034-00A0C90349BE',
1556              'GETID3_ASF_Old_QuickTime_Codec'                 => 'D6E229F5-35DA-11D1-9034-00A0C90349BE',
1557              'GETID3_ASF_Old_DirectShow_Transform_Filter'     => 'D6E229F6-35DA-11D1-9034-00A0C90349BE',
1558              'GETID3_ASF_Old_DirectShow_Rendering_Filter'     => 'D6E229F7-35DA-11D1-9034-00A0C90349BE',
1559              'GETID3_ASF_Old_No_Enhancement'                  => 'D6E229F8-35DA-11D1-9034-00A0C90349BE',
1560              'GETID3_ASF_Old_Unknown_Enhancement_Type'        => 'D6E229F9-35DA-11D1-9034-00A0C90349BE',
1561              'GETID3_ASF_Old_Temporal_Enhancement'            => 'D6E229FA-35DA-11D1-9034-00A0C90349BE',
1562              'GETID3_ASF_Old_Spatial_Enhancement'             => 'D6E229FB-35DA-11D1-9034-00A0C90349BE',
1563              'GETID3_ASF_Old_Quality_Enhancement'             => 'D6E229FC-35DA-11D1-9034-00A0C90349BE',
1564              'GETID3_ASF_Old_Number_of_Channels_Enhancement'  => 'D6E229FD-35DA-11D1-9034-00A0C90349BE',
1565              'GETID3_ASF_Old_Frequency_Response_Enhancement'  => 'D6E229FE-35DA-11D1-9034-00A0C90349BE',
1566              'GETID3_ASF_Old_Media_Object'                    => 'D6E229FF-35DA-11D1-9034-00A0C90349BE',
1567              'GETID3_ASF_Mutex_Language'                      => 'D6E22A00-35DA-11D1-9034-00A0C90349BE',
1568              'GETID3_ASF_Mutex_Bitrate'                       => 'D6E22A01-35DA-11D1-9034-00A0C90349BE',
1569              'GETID3_ASF_Mutex_Unknown'                       => 'D6E22A02-35DA-11D1-9034-00A0C90349BE',
1570              'GETID3_ASF_Old_ASF_Placeholder_Object'          => 'D6E22A0E-35DA-11D1-9034-00A0C90349BE',
1571              'GETID3_ASF_Old_Data_Unit_Extension_Object'      => 'D6E22A0F-35DA-11D1-9034-00A0C90349BE',
1572              'GETID3_ASF_Web_Stream_Format'                   => 'DA1E6B13-8359-4050-B398-388E965BF00C',
1573              'GETID3_ASF_Payload_Ext_System_File_Name'        => 'E165EC0E-19ED-45D7-B4A7-25CBD1E28E9B',
1574              'GETID3_ASF_Marker_Object'                       => 'F487CD01-A951-11CF-8EE6-00C00C205365',
1575              'GETID3_ASF_Timecode_Index_Parameters_Object'    => 'F55E496D-9797-4B5D-8C8B-604DFE9BFB24',
1576              'GETID3_ASF_Audio_Media'                         => 'F8699E40-5B4D-11CF-A8FD-00805F5C442B',
1577              'GETID3_ASF_Media_Object_Index_Object'           => 'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C',
1578              'GETID3_ASF_Alt_Extended_Content_Encryption_Obj' => 'FF889EF1-ADEE-40DA-9E71-98704BB928CE',
1579              'GETID3_ASF_Index_Placeholder_Object'            => 'D9AADE20-7C17-4F9C-BC28-8555DD98E2A2', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1580              'GETID3_ASF_Compatibility_Object'                => '26F18B5D-4584-47EC-9F5F-0E651F0452C9', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1581          );
1582          return $GUIDarray;
1583      }
1584  
1585      /**
1586       * @param string $GUIDstring
1587       *
1588       * @return string|false
1589       */
1590  	public static function GUIDname($GUIDstring) {
1591          static $GUIDarray = array();
1592          if (empty($GUIDarray)) {
1593              $GUIDarray = self::KnownGUIDs();
1594          }
1595          return array_search($GUIDstring, $GUIDarray);
1596      }
1597  
1598      /**
1599       * @param int $id
1600       *
1601       * @return string
1602       */
1603  	public static function ASFIndexObjectIndexTypeLookup($id) {
1604          static $ASFIndexObjectIndexTypeLookup = array();
1605          if (empty($ASFIndexObjectIndexTypeLookup)) {
1606              $ASFIndexObjectIndexTypeLookup[1] = 'Nearest Past Data Packet';
1607              $ASFIndexObjectIndexTypeLookup[2] = 'Nearest Past Media Object';
1608              $ASFIndexObjectIndexTypeLookup[3] = 'Nearest Past Cleanpoint';
1609          }
1610          return (isset($ASFIndexObjectIndexTypeLookup[$id]) ? $ASFIndexObjectIndexTypeLookup[$id] : 'invalid');
1611      }
1612  
1613      /**
1614       * @param string $GUIDstring
1615       *
1616       * @return string
1617       */
1618  	public static function GUIDtoBytestring($GUIDstring) {
1619          // Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way:
1620          // first 4 bytes are in little-endian order
1621          // next 2 bytes are appended in little-endian order
1622          // next 2 bytes are appended in little-endian order
1623          // next 2 bytes are appended in big-endian order
1624          // next 6 bytes are appended in big-endian order
1625  
1626          // AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string:
1627          // $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp
1628  
1629          $hexbytecharstring  = chr(hexdec(substr($GUIDstring,  6, 2)));
1630          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  4, 2)));
1631          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  2, 2)));
1632          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  0, 2)));
1633  
1634          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 11, 2)));
1635          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  9, 2)));
1636  
1637          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 16, 2)));
1638          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 14, 2)));
1639  
1640          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 19, 2)));
1641          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 21, 2)));
1642  
1643          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 24, 2)));
1644          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 26, 2)));
1645          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 28, 2)));
1646          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 30, 2)));
1647          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 32, 2)));
1648          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 34, 2)));
1649  
1650          return $hexbytecharstring;
1651      }
1652  
1653      /**
1654       * @param string $Bytestring
1655       *
1656       * @return string
1657       */
1658  	public static function BytestringToGUID($Bytestring) {
1659          $GUIDstring  = str_pad(dechex(ord($Bytestring[3])),  2, '0', STR_PAD_LEFT);
1660          $GUIDstring .= str_pad(dechex(ord($Bytestring[2])),  2, '0', STR_PAD_LEFT);
1661          $GUIDstring .= str_pad(dechex(ord($Bytestring[1])),  2, '0', STR_PAD_LEFT);
1662          $GUIDstring .= str_pad(dechex(ord($Bytestring[0])),  2, '0', STR_PAD_LEFT);
1663          $GUIDstring .= '-';
1664          $GUIDstring .= str_pad(dechex(ord($Bytestring[5])),  2, '0', STR_PAD_LEFT);
1665          $GUIDstring .= str_pad(dechex(ord($Bytestring[4])),  2, '0', STR_PAD_LEFT);
1666          $GUIDstring .= '-';
1667          $GUIDstring .= str_pad(dechex(ord($Bytestring[7])),  2, '0', STR_PAD_LEFT);
1668          $GUIDstring .= str_pad(dechex(ord($Bytestring[6])),  2, '0', STR_PAD_LEFT);
1669          $GUIDstring .= '-';
1670          $GUIDstring .= str_pad(dechex(ord($Bytestring[8])),  2, '0', STR_PAD_LEFT);
1671          $GUIDstring .= str_pad(dechex(ord($Bytestring[9])),  2, '0', STR_PAD_LEFT);
1672          $GUIDstring .= '-';
1673          $GUIDstring .= str_pad(dechex(ord($Bytestring[10])), 2, '0', STR_PAD_LEFT);
1674          $GUIDstring .= str_pad(dechex(ord($Bytestring[11])), 2, '0', STR_PAD_LEFT);
1675          $GUIDstring .= str_pad(dechex(ord($Bytestring[12])), 2, '0', STR_PAD_LEFT);
1676          $GUIDstring .= str_pad(dechex(ord($Bytestring[13])), 2, '0', STR_PAD_LEFT);
1677          $GUIDstring .= str_pad(dechex(ord($Bytestring[14])), 2, '0', STR_PAD_LEFT);
1678          $GUIDstring .= str_pad(dechex(ord($Bytestring[15])), 2, '0', STR_PAD_LEFT);
1679  
1680          return strtoupper($GUIDstring);
1681      }
1682  
1683      /**
1684       * @param int  $FILETIME
1685       * @param bool $round
1686       *
1687       * @return float|int
1688       */
1689  	public static function FILETIMEtoUNIXtime($FILETIME, $round=true) {
1690          // FILETIME is a 64-bit unsigned integer representing
1691          // the number of 100-nanosecond intervals since January 1, 1601
1692          // UNIX timestamp is number of seconds since January 1, 1970
1693          // 116444736000000000 = 10000000 * 60 * 60 * 24 * 365 * 369 + 89 leap days
1694          if ($round) {
1695              return intval(round(($FILETIME - 116444736000000000) / 10000000));
1696          }
1697          return ($FILETIME - 116444736000000000) / 10000000;
1698      }
1699  
1700      /**
1701       * @param int $WMpictureType
1702       *
1703       * @return string
1704       */
1705  	public static function WMpictureTypeLookup($WMpictureType) {
1706          static $lookup = null;
1707          if ($lookup === null) {
1708              $lookup = array(
1709                  0x03 => 'Front Cover',
1710                  0x04 => 'Back Cover',
1711                  0x00 => 'User Defined',
1712                  0x05 => 'Leaflet Page',
1713                  0x06 => 'Media Label',
1714                  0x07 => 'Lead Artist',
1715                  0x08 => 'Artist',
1716                  0x09 => 'Conductor',
1717                  0x0A => 'Band',
1718                  0x0B => 'Composer',
1719                  0x0C => 'Lyricist',
1720                  0x0D => 'Recording Location',
1721                  0x0E => 'During Recording',
1722                  0x0F => 'During Performance',
1723                  0x10 => 'Video Screen Capture',
1724                  0x12 => 'Illustration',
1725                  0x13 => 'Band Logotype',
1726                  0x14 => 'Publisher Logotype'
1727              );
1728              $lookup = array_map(function($str) {
1729                  return getid3_lib::iconv_fallback('UTF-8', 'UTF-16LE', $str);
1730              }, $lookup);
1731          }
1732  
1733          return (isset($lookup[$WMpictureType]) ? $lookup[$WMpictureType] : '');
1734      }
1735  
1736      /**
1737       * @param string $asf_header_extension_object_data
1738       * @param int    $unhandled_sections
1739       *
1740       * @return array
1741       */
1742  	public function HeaderExtensionObjectDataParse(&$asf_header_extension_object_data, &$unhandled_sections) {
1743          // http://msdn.microsoft.com/en-us/library/bb643323.aspx
1744  
1745          $offset = 0;
1746          $objectOffset = 0;
1747          $HeaderExtensionObjectParsed = array();
1748          while ($objectOffset < strlen($asf_header_extension_object_data)) {
1749              $offset = $objectOffset;
1750              $thisObject = array();
1751  
1752              $thisObject['guid']                              =                              substr($asf_header_extension_object_data, $offset, 16);
1753              $offset += 16;
1754              $thisObject['guid_text'] = $this->BytestringToGUID($thisObject['guid']);
1755              $thisObject['guid_name'] = $this->GUIDname($thisObject['guid_text']);
1756  
1757              $thisObject['size']                              = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1758              $offset += 8;
1759              if ($thisObject['size'] <= 0) {
1760                  break;
1761              }
1762  
1763              switch ($thisObject['guid']) {
1764                  case GETID3_ASF_Extended_Stream_Properties_Object:
1765                      $thisObject['start_time']                        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1766                      $offset += 8;
1767                      $thisObject['start_time_unix']                   = $this->FILETIMEtoUNIXtime($thisObject['start_time']);
1768  
1769                      $thisObject['end_time']                          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1770                      $offset += 8;
1771                      $thisObject['end_time_unix']                     = $this->FILETIMEtoUNIXtime($thisObject['end_time']);
1772  
1773                      $thisObject['data_bitrate']                      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1774                      $offset += 4;
1775  
1776                      $thisObject['buffer_size']                       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1777                      $offset += 4;
1778  
1779                      $thisObject['initial_buffer_fullness']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1780                      $offset += 4;
1781  
1782                      $thisObject['alternate_data_bitrate']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1783                      $offset += 4;
1784  
1785                      $thisObject['alternate_buffer_size']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1786                      $offset += 4;
1787  
1788                      $thisObject['alternate_initial_buffer_fullness'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1789                      $offset += 4;
1790  
1791                      $thisObject['maximum_object_size']               = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1792                      $offset += 4;
1793  
1794                      $thisObject['flags_raw']                         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1795                      $offset += 4;
1796                      $thisObject['flags']['reliable']                = (bool) $thisObject['flags_raw'] & 0x00000001;
1797                      $thisObject['flags']['seekable']                = (bool) $thisObject['flags_raw'] & 0x00000002;
1798                      $thisObject['flags']['no_cleanpoints']          = (bool) $thisObject['flags_raw'] & 0x00000004;
1799                      $thisObject['flags']['resend_live_cleanpoints'] = (bool) $thisObject['flags_raw'] & 0x00000008;
1800  
1801                      $thisObject['stream_number']                     = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1802                      $offset += 2;
1803  
1804                      $thisObject['stream_language_id_index']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1805                      $offset += 2;
1806  
1807                      $thisObject['average_time_per_frame']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1808                      $offset += 4;
1809  
1810                      $thisObject['stream_name_count']                 = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1811                      $offset += 2;
1812  
1813                      $thisObject['payload_extension_system_count']    = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1814                      $offset += 2;
1815  
1816                      for ($i = 0; $i < $thisObject['stream_name_count']; $i++) {
1817                          $streamName = array();
1818  
1819                          $streamName['language_id_index']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1820                          $offset += 2;
1821  
1822                          $streamName['stream_name_length']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1823                          $offset += 2;
1824  
1825                          $streamName['stream_name']                   = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $streamName['stream_name_length']));
1826                          $offset += $streamName['stream_name_length'];
1827  
1828                          $thisObject['stream_names'][$i] = $streamName;
1829                      }
1830  
1831                      for ($i = 0; $i < $thisObject['payload_extension_system_count']; $i++) {
1832                          $payloadExtensionSystem = array();
1833  
1834                          $payloadExtensionSystem['extension_system_id']   =                              substr($asf_header_extension_object_data, $offset, 16);
1835                          $offset += 16;
1836                          $payloadExtensionSystem['extension_system_id_text'] = $this->BytestringToGUID($payloadExtensionSystem['extension_system_id']);
1837  
1838                          $payloadExtensionSystem['extension_system_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1839                          $offset += 2;
1840                          if ($payloadExtensionSystem['extension_system_size'] <= 0) {
1841                              break 2;
1842                          }
1843  
1844                          $payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1845                          $offset += 4;
1846  
1847                          $payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $payloadExtensionSystem['extension_system_info_length']));
1848                          $offset += $payloadExtensionSystem['extension_system_info_length'];
1849  
1850                          $thisObject['payload_extension_systems'][$i] = $payloadExtensionSystem;
1851                      }
1852  
1853                      break;
1854  
1855                  case GETID3_ASF_Padding_Object:
1856                      // padding, skip it
1857                      break;
1858  
1859                  case GETID3_ASF_Metadata_Object:
1860                      $thisObject['description_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1861                      $offset += 2;
1862  
1863                      for ($i = 0; $i < $thisObject['description_record_counts']; $i++) {
1864                          $descriptionRecord = array();
1865  
1866                          $descriptionRecord['reserved_1']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2)); // must be zero
1867                          $offset += 2;
1868  
1869                          $descriptionRecord['stream_number']      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1870                          $offset += 2;
1871  
1872                          $descriptionRecord['name_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1873                          $offset += 2;
1874  
1875                          $descriptionRecord['data_type']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1876                          $offset += 2;
1877                          $descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1878  
1879                          $descriptionRecord['data_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1880                          $offset += 4;
1881  
1882                          $descriptionRecord['name']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1883                          $offset += $descriptionRecord['name_length'];
1884  
1885                          $descriptionRecord['data']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1886                          $offset += $descriptionRecord['data_length'];
1887                          switch ($descriptionRecord['data_type']) {
1888                              case 0x0000: // Unicode string
1889                                  break;
1890  
1891                              case 0x0001: // BYTE array
1892                                  // do nothing
1893                                  break;
1894  
1895                              case 0x0002: // BOOL
1896                                  $descriptionRecord['data'] = (bool) getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1897                                  break;
1898  
1899                              case 0x0003: // DWORD
1900                              case 0x0004: // QWORD
1901                              case 0x0005: // WORD
1902                                  $descriptionRecord['data'] = getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1903                                  break;
1904  
1905                              case 0x0006: // GUID
1906                                  $descriptionRecord['data_text'] = $this->BytestringToGUID($descriptionRecord['data']);
1907                                  break;
1908                          }
1909  
1910                          $thisObject['description_record'][$i] = $descriptionRecord;
1911                      }
1912                      break;
1913  
1914                  case GETID3_ASF_Language_List_Object:
1915                      $thisObject['language_id_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1916                      $offset += 2;
1917  
1918                      for ($i = 0; $i < $thisObject['language_id_record_counts']; $i++) {
1919                          $languageIDrecord = array();
1920  
1921                          $languageIDrecord['language_id_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  1));
1922                          $offset += 1;
1923  
1924                          $languageIDrecord['language_id']                =                              substr($asf_header_extension_object_data, $offset,  $languageIDrecord['language_id_length']);
1925                          $offset += $languageIDrecord['language_id_length'];
1926  
1927                          $thisObject['language_id_record'][$i] = $languageIDrecord;
1928                      }
1929                      break;
1930  
1931                  case GETID3_ASF_Metadata_Library_Object:
1932                      $thisObject['description_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1933                      $offset += 2;
1934  
1935                      for ($i = 0; $i < $thisObject['description_records_count']; $i++) {
1936                          $descriptionRecord = array();
1937  
1938                          $descriptionRecord['language_list_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1939                          $offset += 2;
1940  
1941                          $descriptionRecord['stream_number']       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1942                          $offset += 2;
1943  
1944                          $descriptionRecord['name_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1945                          $offset += 2;
1946  
1947                          $descriptionRecord['data_type']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1948                          $offset += 2;
1949                          $descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1950  
1951                          $descriptionRecord['data_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1952                          $offset += 4;
1953  
1954                          $descriptionRecord['name']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1955                          $offset += $descriptionRecord['name_length'];
1956  
1957                          $descriptionRecord['data']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1958                          $offset += $descriptionRecord['data_length'];
1959  
1960                          if (preg_match('#^WM/Picture$#', str_replace("\x00", '', trim($descriptionRecord['name'])))) {
1961                              $WMpicture = $this->ASF_WMpicture($descriptionRecord['data']);
1962                              foreach ($WMpicture as $key => $value) {
1963                                  $descriptionRecord['data'] = $WMpicture;
1964                              }
1965                              unset($WMpicture);
1966                          }
1967  
1968                          $thisObject['description_record'][$i] = $descriptionRecord;
1969                      }
1970                      break;
1971  
1972                  default:
1973                      $unhandled_sections++;
1974                      if ($this->GUIDname($thisObject['guid_text'])) {
1975                          $this->warning('unhandled Header Extension Object GUID "'.$this->GUIDname($thisObject['guid_text']).'" {'.$thisObject['guid_text'].'} at offset '.($offset - 16 - 8));
1976                      } else {
1977                          $this->warning('unknown Header Extension Object GUID {'.$thisObject['guid_text'].'} in at offset '.($offset - 16 - 8));
1978                      }
1979                      break;
1980              }
1981              $HeaderExtensionObjectParsed[] = $thisObject;
1982  
1983              $objectOffset += $thisObject['size'];
1984          }
1985          return $HeaderExtensionObjectParsed;
1986      }
1987  
1988      /**
1989       * @param int $id
1990       *
1991       * @return string
1992       */
1993  	public static function metadataLibraryObjectDataTypeLookup($id) {
1994          static $lookup = array(
1995              0x0000 => 'Unicode string', // The data consists of a sequence of Unicode characters
1996              0x0001 => 'BYTE array',     // The type of the data is implementation-specific
1997              0x0002 => 'BOOL',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer. Only 0x0000 or 0x0001 are permitted values
1998              0x0003 => 'DWORD',          // The data is 4 bytes long and should be interpreted as a 32-bit unsigned integer
1999              0x0004 => 'QWORD',          // The data is 8 bytes long and should be interpreted as a 64-bit unsigned integer
2000              0x0005 => 'WORD',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer
2001              0x0006 => 'GUID',           // The data is 16 bytes long and should be interpreted as a 128-bit GUID
2002          );
2003          return (isset($lookup[$id]) ? $lookup[$id] : 'invalid');
2004      }
2005  
2006      /**
2007       * @param string $data
2008       *
2009       * @return array
2010       */
2011  	public function ASF_WMpicture(&$data) {
2012          //typedef struct _WMPicture{
2013          //  LPWSTR  pwszMIMEType;
2014          //  BYTE  bPictureType;
2015          //  LPWSTR  pwszDescription;
2016          //  DWORD  dwDataLen;
2017          //  BYTE*  pbData;
2018          //} WM_PICTURE;
2019  
2020          $WMpicture = array();
2021  
2022          $offset = 0;
2023          $WMpicture['image_type_id'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 1));
2024          $offset += 1;
2025          $WMpicture['image_type']    = self::WMpictureTypeLookup($WMpicture['image_type_id']);
2026          $WMpicture['image_size']    = getid3_lib::LittleEndian2Int(substr($data, $offset, 4));
2027          $offset += 4;
2028  
2029          $WMpicture['image_mime'] = '';
2030          do {
2031              $next_byte_pair = substr($data, $offset, 2);
2032              $offset += 2;
2033              $WMpicture['image_mime'] .= $next_byte_pair;
2034          } while ($next_byte_pair !== "\x00\x00");
2035  
2036          $WMpicture['image_description'] = '';
2037          do {
2038              $next_byte_pair = substr($data, $offset, 2);
2039              $offset += 2;
2040              $WMpicture['image_description'] .= $next_byte_pair;
2041          } while ($next_byte_pair !== "\x00\x00");
2042  
2043          $WMpicture['dataoffset'] = $offset;
2044          $WMpicture['data'] = substr($data, $offset);
2045  
2046          $imageinfo = array();
2047          $WMpicture['image_mime'] = '';
2048          $imagechunkcheck = getid3_lib::GetDataImageSize($WMpicture['data'], $imageinfo);
2049          unset($imageinfo);
2050          if (!empty($imagechunkcheck)) {
2051              $WMpicture['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
2052          }
2053          if (!isset($this->getid3->info['asf']['comments']['picture'])) {
2054              $this->getid3->info['asf']['comments']['picture'] = array();
2055          }
2056          $this->getid3->info['asf']['comments']['picture'][] = array('data'=>$WMpicture['data'], 'image_mime'=>$WMpicture['image_mime']);
2057  
2058          return $WMpicture;
2059      }
2060  
2061      /**
2062       * Remove terminator 00 00 and convert UTF-16LE to Latin-1.
2063       *
2064       * @param string $string
2065       *
2066       * @return string
2067       */
2068  	public static function TrimConvert($string) {
2069          return trim(getid3_lib::iconv_fallback('UTF-16LE', 'ISO-8859-1', self::TrimTerm($string)), ' ');
2070      }
2071  
2072      /**
2073       * Remove terminator 00 00.
2074       *
2075       * @param string $string
2076       *
2077       * @return string
2078       */
2079  	public static function TrimTerm($string) {
2080          // remove terminator, only if present (it should be, but...)
2081          if (substr($string, -2) === "\x00\x00") {
2082              $string = substr($string, 0, -2);
2083          }
2084          return $string;
2085      }
2086  
2087  }


Generated: Sat Jul 4 01:00:03 2020 Cross-referenced by PHPXref 0.7.1