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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 http://getid3.sourceforge.net                 //
   5  //            or http://www.getid3.org                         //
   6  /////////////////////////////////////////////////////////////////
   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  getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
  17  
  18  class getid3_asf extends getid3_handler
  19  {
  20  
  21  	public function __construct(getID3 $getid3) {
  22          parent::__construct($getid3);  // extends getid3_handler::__construct()
  23  
  24          // initialize all GUID constants
  25          $GUIDarray = $this->KnownGUIDs();
  26          foreach ($GUIDarray as $GUIDname => $hexstringvalue) {
  27              if (!defined($GUIDname)) {
  28                  define($GUIDname, $this->GUIDtoBytestring($hexstringvalue));
  29              }
  30          }
  31      }
  32  
  33  	public function Analyze() {
  34          $info = &$this->getid3->info;
  35  
  36          // Shortcuts
  37          $thisfile_audio = &$info['audio'];
  38          $thisfile_video = &$info['video'];
  39          $info['asf']  = array();
  40          $thisfile_asf = &$info['asf'];
  41          $thisfile_asf['comments'] = array();
  42          $thisfile_asf_comments    = &$thisfile_asf['comments'];
  43          $thisfile_asf['header_object'] = array();
  44          $thisfile_asf_headerobject     = &$thisfile_asf['header_object'];
  45  
  46  
  47          // ASF structure:
  48          // * Header Object [required]
  49          //   * File Properties Object [required]   (global file attributes)
  50          //   * Stream Properties Object [required] (defines media stream & characteristics)
  51          //   * Header Extension Object [required]  (additional functionality)
  52          //   * Content Description Object          (bibliographic information)
  53          //   * Script Command Object               (commands for during playback)
  54          //   * Marker Object                       (named jumped points within the file)
  55          // * Data Object [required]
  56          //   * Data Packets
  57          // * Index Object
  58  
  59          // Header Object: (mandatory, one only)
  60          // Field Name                   Field Type   Size (bits)
  61          // Object ID                    GUID         128             // GUID for header object - GETID3_ASF_Header_Object
  62          // Object Size                  QWORD        64              // size of header object, including 30 bytes of Header Object header
  63          // Number of Header Objects     DWORD        32              // number of objects in header object
  64          // Reserved1                    BYTE         8               // hardcoded: 0x01
  65          // Reserved2                    BYTE         8               // hardcoded: 0x02
  66  
  67          $info['fileformat'] = 'asf';
  68  
  69          fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
  70          $HeaderObjectData = fread($this->getid3->fp, 30);
  71  
  72          $thisfile_asf_headerobject['objectid']      = substr($HeaderObjectData, 0, 16);
  73          $thisfile_asf_headerobject['objectid_guid'] = $this->BytestringToGUID($thisfile_asf_headerobject['objectid']);
  74          if ($thisfile_asf_headerobject['objectid'] != GETID3_ASF_Header_Object) {
  75              $info['warning'][] = 'ASF header GUID {'.$this->BytestringToGUID($thisfile_asf_headerobject['objectid']).'} does not match expected "GETID3_ASF_Header_Object" GUID {'.$this->BytestringToGUID(GETID3_ASF_Header_Object).'}';
  76              unset($info['fileformat']);
  77              unset($info['asf']);
  78              return false;
  79              break;
  80          }
  81          $thisfile_asf_headerobject['objectsize']    = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 16, 8));
  82          $thisfile_asf_headerobject['headerobjects'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 24, 4));
  83          $thisfile_asf_headerobject['reserved1']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 28, 1));
  84          $thisfile_asf_headerobject['reserved2']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 29, 1));
  85  
  86          $NextObjectOffset = ftell($this->getid3->fp);
  87          $ASFHeaderData = fread($this->getid3->fp, $thisfile_asf_headerobject['objectsize'] - 30);
  88          $offset = 0;
  89  
  90          for ($HeaderObjectsCounter = 0; $HeaderObjectsCounter < $thisfile_asf_headerobject['headerobjects']; $HeaderObjectsCounter++) {
  91              $NextObjectGUID = substr($ASFHeaderData, $offset, 16);
  92              $offset += 16;
  93              $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
  94              $NextObjectSize = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
  95              $offset += 8;
  96              switch ($NextObjectGUID) {
  97  
  98                  case GETID3_ASF_File_Properties_Object:
  99                      // File Properties Object: (mandatory, one only)
 100                      // Field Name                   Field Type   Size (bits)
 101                      // Object ID                    GUID         128             // GUID for file properties object - GETID3_ASF_File_Properties_Object
 102                      // Object Size                  QWORD        64              // size of file properties object, including 104 bytes of File Properties Object header
 103                      // File ID                      GUID         128             // unique ID - identical to File ID in Data Object
 104                      // File Size                    QWORD        64              // entire file in bytes. Invalid if Broadcast Flag == 1
 105                      // Creation Date                QWORD        64              // date & time of file creation. Maybe invalid if Broadcast Flag == 1
 106                      // Data Packets Count           QWORD        64              // number of data packets in Data Object. Invalid if Broadcast Flag == 1
 107                      // Play Duration                QWORD        64              // playtime, in 100-nanosecond units. Invalid if Broadcast Flag == 1
 108                      // Send Duration                QWORD        64              // time needed to send file, in 100-nanosecond units. Players can ignore this value. Invalid if Broadcast Flag == 1
 109                      // 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
 110                      // Flags                        DWORD        32              //
 111                      // * Broadcast Flag             bits         1  (0x01)       // file is currently being written, some header values are invalid
 112                      // * Seekable Flag              bits         1  (0x02)       // is file seekable
 113                      // * Reserved                   bits         30 (0xFFFFFFFC) // reserved - set to zero
 114                      // Minimum Data Packet Size     DWORD        32              // in bytes. should be same as Maximum Data Packet Size. Invalid if Broadcast Flag == 1
 115                      // Maximum Data Packet Size     DWORD        32              // in bytes. should be same as Minimum Data Packet Size. Invalid if Broadcast Flag == 1
 116                      // Maximum Bitrate              DWORD        32              // maximum instantaneous bitrate in bits per second for entire file, including all data streams and ASF overhead
 117  
 118                      // shortcut
 119                      $thisfile_asf['file_properties_object'] = array();
 120                      $thisfile_asf_filepropertiesobject      = &$thisfile_asf['file_properties_object'];
 121  
 122                      $thisfile_asf_filepropertiesobject['offset']             = $NextObjectOffset + $offset;
 123                      $thisfile_asf_filepropertiesobject['objectid']           = $NextObjectGUID;
 124                      $thisfile_asf_filepropertiesobject['objectid_guid']      = $NextObjectGUIDtext;
 125                      $thisfile_asf_filepropertiesobject['objectsize']         = $NextObjectSize;
 126                      $thisfile_asf_filepropertiesobject['fileid']             = substr($ASFHeaderData, $offset, 16);
 127                      $offset += 16;
 128                      $thisfile_asf_filepropertiesobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_filepropertiesobject['fileid']);
 129                      $thisfile_asf_filepropertiesobject['filesize']           = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 130                      $offset += 8;
 131                      $thisfile_asf_filepropertiesobject['creation_date']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 132                      $thisfile_asf_filepropertiesobject['creation_date_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_filepropertiesobject['creation_date']);
 133                      $offset += 8;
 134                      $thisfile_asf_filepropertiesobject['data_packets']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 135                      $offset += 8;
 136                      $thisfile_asf_filepropertiesobject['play_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 137                      $offset += 8;
 138                      $thisfile_asf_filepropertiesobject['send_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 139                      $offset += 8;
 140                      $thisfile_asf_filepropertiesobject['preroll']            = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 141                      $offset += 8;
 142                      $thisfile_asf_filepropertiesobject['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 143                      $offset += 4;
 144                      $thisfile_asf_filepropertiesobject['flags']['broadcast'] = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0001);
 145                      $thisfile_asf_filepropertiesobject['flags']['seekable']  = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0002);
 146  
 147                      $thisfile_asf_filepropertiesobject['min_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 148                      $offset += 4;
 149                      $thisfile_asf_filepropertiesobject['max_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 150                      $offset += 4;
 151                      $thisfile_asf_filepropertiesobject['max_bitrate']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 152                      $offset += 4;
 153  
 154                      if ($thisfile_asf_filepropertiesobject['flags']['broadcast']) {
 155  
 156                          // broadcast flag is set, some values invalid
 157                          unset($thisfile_asf_filepropertiesobject['filesize']);
 158                          unset($thisfile_asf_filepropertiesobject['data_packets']);
 159                          unset($thisfile_asf_filepropertiesobject['play_duration']);
 160                          unset($thisfile_asf_filepropertiesobject['send_duration']);
 161                          unset($thisfile_asf_filepropertiesobject['min_packet_size']);
 162                          unset($thisfile_asf_filepropertiesobject['max_packet_size']);
 163  
 164                      } else {
 165  
 166                          // broadcast flag NOT set, perform calculations
 167                          $info['playtime_seconds'] = ($thisfile_asf_filepropertiesobject['play_duration'] / 10000000) - ($thisfile_asf_filepropertiesobject['preroll'] / 1000);
 168  
 169                          //$info['bitrate'] = $thisfile_asf_filepropertiesobject['max_bitrate'];
 170                          $info['bitrate'] = ((isset($thisfile_asf_filepropertiesobject['filesize']) ? $thisfile_asf_filepropertiesobject['filesize'] : $info['filesize']) * 8) / $info['playtime_seconds'];
 171                      }
 172                      break;
 173  
 174                  case GETID3_ASF_Stream_Properties_Object:
 175                      // Stream Properties Object: (mandatory, one per media stream)
 176                      // Field Name                   Field Type   Size (bits)
 177                      // Object ID                    GUID         128             // GUID for stream properties object - GETID3_ASF_Stream_Properties_Object
 178                      // Object Size                  QWORD        64              // size of stream properties object, including 78 bytes of Stream Properties Object header
 179                      // Stream Type                  GUID         128             // GETID3_ASF_Audio_Media, GETID3_ASF_Video_Media or GETID3_ASF_Command_Media
 180                      // Error Correction Type        GUID         128             // GETID3_ASF_Audio_Spread for audio-only streams, GETID3_ASF_No_Error_Correction for other stream types
 181                      // Time Offset                  QWORD        64              // 100-nanosecond units. typically zero. added to all timestamps of samples in the stream
 182                      // Type-Specific Data Length    DWORD        32              // number of bytes for Type-Specific Data field
 183                      // Error Correction Data Length DWORD        32              // number of bytes for Error Correction Data field
 184                      // Flags                        WORD         16              //
 185                      // * Stream Number              bits         7 (0x007F)      // number of this stream.  1 <= valid <= 127
 186                      // * Reserved                   bits         8 (0x7F80)      // reserved - set to zero
 187                      // * Encrypted Content Flag     bits         1 (0x8000)      // stream contents encrypted if set
 188                      // Reserved                     DWORD        32              // reserved - set to zero
 189                      // Type-Specific Data           BYTESTREAM   variable        // type-specific format data, depending on value of Stream Type
 190                      // Error Correction Data        BYTESTREAM   variable        // error-correction-specific format data, depending on value of Error Correct Type
 191  
 192                      // There is one GETID3_ASF_Stream_Properties_Object for each stream (audio, video) but the
 193                      // stream number isn't known until halfway through decoding the structure, hence it
 194                      // it is decoded to a temporary variable and then stuck in the appropriate index later
 195  
 196                      $StreamPropertiesObjectData['offset']             = $NextObjectOffset + $offset;
 197                      $StreamPropertiesObjectData['objectid']           = $NextObjectGUID;
 198                      $StreamPropertiesObjectData['objectid_guid']      = $NextObjectGUIDtext;
 199                      $StreamPropertiesObjectData['objectsize']         = $NextObjectSize;
 200                      $StreamPropertiesObjectData['stream_type']        = substr($ASFHeaderData, $offset, 16);
 201                      $offset += 16;
 202                      $StreamPropertiesObjectData['stream_type_guid']   = $this->BytestringToGUID($StreamPropertiesObjectData['stream_type']);
 203                      $StreamPropertiesObjectData['error_correct_type'] = substr($ASFHeaderData, $offset, 16);
 204                      $offset += 16;
 205                      $StreamPropertiesObjectData['error_correct_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['error_correct_type']);
 206                      $StreamPropertiesObjectData['time_offset']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 207                      $offset += 8;
 208                      $StreamPropertiesObjectData['type_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 209                      $offset += 4;
 210                      $StreamPropertiesObjectData['error_data_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 211                      $offset += 4;
 212                      $StreamPropertiesObjectData['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 213                      $offset += 2;
 214                      $StreamPropertiesObjectStreamNumber               = $StreamPropertiesObjectData['flags_raw'] & 0x007F;
 215                      $StreamPropertiesObjectData['flags']['encrypted'] = (bool) ($StreamPropertiesObjectData['flags_raw'] & 0x8000);
 216  
 217                      $offset += 4; // reserved - DWORD
 218                      $StreamPropertiesObjectData['type_specific_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['type_data_length']);
 219                      $offset += $StreamPropertiesObjectData['type_data_length'];
 220                      $StreamPropertiesObjectData['error_correct_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['error_data_length']);
 221                      $offset += $StreamPropertiesObjectData['error_data_length'];
 222  
 223                      switch ($StreamPropertiesObjectData['stream_type']) {
 224  
 225                          case GETID3_ASF_Audio_Media:
 226                              $thisfile_audio['dataformat']   = (!empty($thisfile_audio['dataformat'])   ? $thisfile_audio['dataformat']   : 'asf');
 227                              $thisfile_audio['bitrate_mode'] = (!empty($thisfile_audio['bitrate_mode']) ? $thisfile_audio['bitrate_mode'] : 'cbr');
 228  
 229                              $audiodata = getid3_riff::parseWAVEFORMATex(substr($StreamPropertiesObjectData['type_specific_data'], 0, 16));
 230                              unset($audiodata['raw']);
 231                              $thisfile_audio = getid3_lib::array_merge_noclobber($audiodata, $thisfile_audio);
 232                              break;
 233  
 234                          case GETID3_ASF_Video_Media:
 235                              $thisfile_video['dataformat']   = (!empty($thisfile_video['dataformat'])   ? $thisfile_video['dataformat']   : 'asf');
 236                              $thisfile_video['bitrate_mode'] = (!empty($thisfile_video['bitrate_mode']) ? $thisfile_video['bitrate_mode'] : 'cbr');
 237                              break;
 238  
 239                          case GETID3_ASF_Command_Media:
 240                          default:
 241                              // do nothing
 242                              break;
 243  
 244                      }
 245  
 246                      $thisfile_asf['stream_properties_object'][$StreamPropertiesObjectStreamNumber] = $StreamPropertiesObjectData;
 247                      unset($StreamPropertiesObjectData); // clear for next stream, if any
 248                      break;
 249  
 250                  case GETID3_ASF_Header_Extension_Object:
 251                      // Header Extension Object: (mandatory, one only)
 252                      // Field Name                   Field Type   Size (bits)
 253                      // Object ID                    GUID         128             // GUID for Header Extension object - GETID3_ASF_Header_Extension_Object
 254                      // Object Size                  QWORD        64              // size of Header Extension object, including 46 bytes of Header Extension Object header
 255                      // Reserved Field 1             GUID         128             // hardcoded: GETID3_ASF_Reserved_1
 256                      // Reserved Field 2             WORD         16              // hardcoded: 0x00000006
 257                      // Header Extension Data Size   DWORD        32              // in bytes. valid: 0, or > 24. equals object size minus 46
 258                      // Header Extension Data        BYTESTREAM   variable        // array of zero or more extended header objects
 259  
 260                      // shortcut
 261                      $thisfile_asf['header_extension_object'] = array();
 262                      $thisfile_asf_headerextensionobject      = &$thisfile_asf['header_extension_object'];
 263  
 264                      $thisfile_asf_headerextensionobject['offset']              = $NextObjectOffset + $offset;
 265                      $thisfile_asf_headerextensionobject['objectid']            = $NextObjectGUID;
 266                      $thisfile_asf_headerextensionobject['objectid_guid']       = $NextObjectGUIDtext;
 267                      $thisfile_asf_headerextensionobject['objectsize']          = $NextObjectSize;
 268                      $thisfile_asf_headerextensionobject['reserved_1']          = substr($ASFHeaderData, $offset, 16);
 269                      $offset += 16;
 270                      $thisfile_asf_headerextensionobject['reserved_1_guid']     = $this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']);
 271                      if ($thisfile_asf_headerextensionobject['reserved_1'] != GETID3_ASF_Reserved_1) {
 272                          $info['warning'][] = 'header_extension_object.reserved_1 GUID ('.$this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']).') does not match expected "GETID3_ASF_Reserved_1" GUID ('.$this->BytestringToGUID(GETID3_ASF_Reserved_1).')';
 273                          //return false;
 274                          break;
 275                      }
 276                      $thisfile_asf_headerextensionobject['reserved_2']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 277                      $offset += 2;
 278                      if ($thisfile_asf_headerextensionobject['reserved_2'] != 6) {
 279                          $info['warning'][] = 'header_extension_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_headerextensionobject['reserved_2']).') does not match expected value of "6"';
 280                          //return false;
 281                          break;
 282                      }
 283                      $thisfile_asf_headerextensionobject['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 284                      $offset += 4;
 285                      $thisfile_asf_headerextensionobject['extension_data']      =                              substr($ASFHeaderData, $offset, $thisfile_asf_headerextensionobject['extension_data_size']);
 286                      $unhandled_sections = 0;
 287                      $thisfile_asf_headerextensionobject['extension_data_parsed'] = $this->ASF_HeaderExtensionObjectDataParse($thisfile_asf_headerextensionobject['extension_data'], $unhandled_sections);
 288                      if ($unhandled_sections === 0) {
 289                          unset($thisfile_asf_headerextensionobject['extension_data']);
 290                      }
 291                      $offset += $thisfile_asf_headerextensionobject['extension_data_size'];
 292                      break;
 293  
 294                  case GETID3_ASF_Codec_List_Object:
 295                      // Codec List Object: (optional, one only)
 296                      // Field Name                   Field Type   Size (bits)
 297                      // Object ID                    GUID         128             // GUID for Codec List object - GETID3_ASF_Codec_List_Object
 298                      // Object Size                  QWORD        64              // size of Codec List object, including 44 bytes of Codec List Object header
 299                      // Reserved                     GUID         128             // hardcoded: 86D15241-311D-11D0-A3A4-00A0C90348F6
 300                      // Codec Entries Count          DWORD        32              // number of entries in Codec Entries array
 301                      // Codec Entries                array of:    variable        //
 302                      // * Type                       WORD         16              // 0x0001 = Video Codec, 0x0002 = Audio Codec, 0xFFFF = Unknown Codec
 303                      // * Codec Name Length          WORD         16              // number of Unicode characters stored in the Codec Name field
 304                      // * Codec Name                 WCHAR        variable        // array of Unicode characters - name of codec used to create the content
 305                      // * Codec Description Length   WORD         16              // number of Unicode characters stored in the Codec Description field
 306                      // * Codec Description          WCHAR        variable        // array of Unicode characters - description of format used to create the content
 307                      // * Codec Information Length   WORD         16              // number of Unicode characters stored in the Codec Information field
 308                      // * Codec Information          BYTESTREAM   variable        // opaque array of information bytes about the codec used to create the content
 309  
 310                      // shortcut
 311                      $thisfile_asf['codec_list_object'] = array();
 312                      $thisfile_asf_codeclistobject      = &$thisfile_asf['codec_list_object'];
 313  
 314                      $thisfile_asf_codeclistobject['offset']                    = $NextObjectOffset + $offset;
 315                      $thisfile_asf_codeclistobject['objectid']                  = $NextObjectGUID;
 316                      $thisfile_asf_codeclistobject['objectid_guid']             = $NextObjectGUIDtext;
 317                      $thisfile_asf_codeclistobject['objectsize']                = $NextObjectSize;
 318                      $thisfile_asf_codeclistobject['reserved']                  = substr($ASFHeaderData, $offset, 16);
 319                      $offset += 16;
 320                      $thisfile_asf_codeclistobject['reserved_guid']             = $this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']);
 321                      if ($thisfile_asf_codeclistobject['reserved'] != $this->GUIDtoBytestring('86D15241-311D-11D0-A3A4-00A0C90348F6')) {
 322                          $info['warning'][] = 'codec_list_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {86D15241-311D-11D0-A3A4-00A0C90348F6}';
 323                          //return false;
 324                          break;
 325                      }
 326                      $thisfile_asf_codeclistobject['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 327                      $offset += 4;
 328                      for ($CodecEntryCounter = 0; $CodecEntryCounter < $thisfile_asf_codeclistobject['codec_entries_count']; $CodecEntryCounter++) {
 329                          // shortcut
 330                          $thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter] = array();
 331                          $thisfile_asf_codeclistobject_codecentries_current = &$thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter];
 332  
 333                          $thisfile_asf_codeclistobject_codecentries_current['type_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 334                          $offset += 2;
 335                          $thisfile_asf_codeclistobject_codecentries_current['type'] = $this->ASFCodecListObjectTypeLookup($thisfile_asf_codeclistobject_codecentries_current['type_raw']);
 336  
 337                          $CodecNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 338                          $offset += 2;
 339                          $thisfile_asf_codeclistobject_codecentries_current['name'] = substr($ASFHeaderData, $offset, $CodecNameLength);
 340                          $offset += $CodecNameLength;
 341  
 342                          $CodecDescriptionLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 343                          $offset += 2;
 344                          $thisfile_asf_codeclistobject_codecentries_current['description'] = substr($ASFHeaderData, $offset, $CodecDescriptionLength);
 345                          $offset += $CodecDescriptionLength;
 346  
 347                          $CodecInformationLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 348                          $offset += 2;
 349                          $thisfile_asf_codeclistobject_codecentries_current['information'] = substr($ASFHeaderData, $offset, $CodecInformationLength);
 350                          $offset += $CodecInformationLength;
 351  
 352                          if ($thisfile_asf_codeclistobject_codecentries_current['type_raw'] == 2) { // audio codec
 353  
 354                              if (strpos($thisfile_asf_codeclistobject_codecentries_current['description'], ',') === false) {
 355                                  $info['warning'][] = '[asf][codec_list_object][codec_entries]['.$CodecEntryCounter.'][description] expected to contain comma-seperated list of parameters: "'.$thisfile_asf_codeclistobject_codecentries_current['description'].'"';
 356                              } else {
 357  
 358                                  list($AudioCodecBitrate, $AudioCodecFrequency, $AudioCodecChannels) = explode(',', $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']));
 359                                  $thisfile_audio['codec'] = $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['name']);
 360  
 361                                  if (!isset($thisfile_audio['bitrate']) && strstr($AudioCodecBitrate, 'kbps')) {
 362                                      $thisfile_audio['bitrate'] = (int) (trim(str_replace('kbps', '', $AudioCodecBitrate)) * 1000);
 363                                  }
 364                                  //if (!isset($thisfile_video['bitrate']) && isset($thisfile_audio['bitrate']) && isset($thisfile_asf['file_properties_object']['max_bitrate']) && ($thisfile_asf_codeclistobject['codec_entries_count'] > 1)) {
 365                                  if (empty($thisfile_video['bitrate']) && !empty($thisfile_audio['bitrate']) && !empty($info['bitrate'])) {
 366                                      //$thisfile_video['bitrate'] = $thisfile_asf['file_properties_object']['max_bitrate'] - $thisfile_audio['bitrate'];
 367                                      $thisfile_video['bitrate'] = $info['bitrate'] - $thisfile_audio['bitrate'];
 368                                  }
 369  
 370                                  $AudioCodecFrequency = (int) trim(str_replace('kHz', '', $AudioCodecFrequency));
 371                                  switch ($AudioCodecFrequency) {
 372                                      case 8:
 373                                      case 8000:
 374                                          $thisfile_audio['sample_rate'] = 8000;
 375                                          break;
 376  
 377                                      case 11:
 378                                      case 11025:
 379                                          $thisfile_audio['sample_rate'] = 11025;
 380                                          break;
 381  
 382                                      case 12:
 383                                      case 12000:
 384                                          $thisfile_audio['sample_rate'] = 12000;
 385                                          break;
 386  
 387                                      case 16:
 388                                      case 16000:
 389                                          $thisfile_audio['sample_rate'] = 16000;
 390                                          break;
 391  
 392                                      case 22:
 393                                      case 22050:
 394                                          $thisfile_audio['sample_rate'] = 22050;
 395                                          break;
 396  
 397                                      case 24:
 398                                      case 24000:
 399                                          $thisfile_audio['sample_rate'] = 24000;
 400                                          break;
 401  
 402                                      case 32:
 403                                      case 32000:
 404                                          $thisfile_audio['sample_rate'] = 32000;
 405                                          break;
 406  
 407                                      case 44:
 408                                      case 441000:
 409                                          $thisfile_audio['sample_rate'] = 44100;
 410                                          break;
 411  
 412                                      case 48:
 413                                      case 48000:
 414                                          $thisfile_audio['sample_rate'] = 48000;
 415                                          break;
 416  
 417                                      default:
 418                                          $info['warning'][] = 'unknown frequency: "'.$AudioCodecFrequency.'" ('.$this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']).')';
 419                                          break;
 420                                  }
 421  
 422                                  if (!isset($thisfile_audio['channels'])) {
 423                                      if (strstr($AudioCodecChannels, 'stereo')) {
 424                                          $thisfile_audio['channels'] = 2;
 425                                      } elseif (strstr($AudioCodecChannels, 'mono')) {
 426                                          $thisfile_audio['channels'] = 1;
 427                                      }
 428                                  }
 429  
 430                              }
 431                          }
 432                      }
 433                      break;
 434  
 435                  case GETID3_ASF_Script_Command_Object:
 436                      // Script Command Object: (optional, one only)
 437                      // Field Name                   Field Type   Size (bits)
 438                      // Object ID                    GUID         128             // GUID for Script Command object - GETID3_ASF_Script_Command_Object
 439                      // Object Size                  QWORD        64              // size of Script Command object, including 44 bytes of Script Command Object header
 440                      // Reserved                     GUID         128             // hardcoded: 4B1ACBE3-100B-11D0-A39B-00A0C90348F6
 441                      // Commands Count               WORD         16              // number of Commands structures in the Script Commands Objects
 442                      // Command Types Count          WORD         16              // number of Command Types structures in the Script Commands Objects
 443                      // Command Types                array of:    variable        //
 444                      // * Command Type Name Length   WORD         16              // number of Unicode characters for Command Type Name
 445                      // * Command Type Name          WCHAR        variable        // array of Unicode characters - name of a type of command
 446                      // Commands                     array of:    variable        //
 447                      // * Presentation Time          DWORD        32              // presentation time of that command, in milliseconds
 448                      // * Type Index                 WORD         16              // type of this command, as a zero-based index into the array of Command Types of this object
 449                      // * Command Name Length        WORD         16              // number of Unicode characters for Command Name
 450                      // * Command Name               WCHAR        variable        // array of Unicode characters - name of this command
 451  
 452                      // shortcut
 453                      $thisfile_asf['script_command_object'] = array();
 454                      $thisfile_asf_scriptcommandobject      = &$thisfile_asf['script_command_object'];
 455  
 456                      $thisfile_asf_scriptcommandobject['offset']               = $NextObjectOffset + $offset;
 457                      $thisfile_asf_scriptcommandobject['objectid']             = $NextObjectGUID;
 458                      $thisfile_asf_scriptcommandobject['objectid_guid']        = $NextObjectGUIDtext;
 459                      $thisfile_asf_scriptcommandobject['objectsize']           = $NextObjectSize;
 460                      $thisfile_asf_scriptcommandobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 461                      $offset += 16;
 462                      $thisfile_asf_scriptcommandobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']);
 463                      if ($thisfile_asf_scriptcommandobject['reserved'] != $this->GUIDtoBytestring('4B1ACBE3-100B-11D0-A39B-00A0C90348F6')) {
 464                          $info['warning'][] = 'script_command_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4B1ACBE3-100B-11D0-A39B-00A0C90348F6}';
 465                          //return false;
 466                          break;
 467                      }
 468                      $thisfile_asf_scriptcommandobject['commands_count']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 469                      $offset += 2;
 470                      $thisfile_asf_scriptcommandobject['command_types_count']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 471                      $offset += 2;
 472                      for ($CommandTypesCounter = 0; $CommandTypesCounter < $thisfile_asf_scriptcommandobject['command_types_count']; $CommandTypesCounter++) {
 473                          $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 474                          $offset += 2;
 475                          $thisfile_asf_scriptcommandobject['command_types'][$CommandTypesCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
 476                          $offset += $CommandTypeNameLength;
 477                      }
 478                      for ($CommandsCounter = 0; $CommandsCounter < $thisfile_asf_scriptcommandobject['commands_count']; $CommandsCounter++) {
 479                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['presentation_time']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 480                          $offset += 4;
 481                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['type_index']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 482                          $offset += 2;
 483  
 484                          $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
 485                          $offset += 2;
 486                          $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
 487                          $offset += $CommandTypeNameLength;
 488                      }
 489                      break;
 490  
 491                  case GETID3_ASF_Marker_Object:
 492                      // Marker Object: (optional, one only)
 493                      // Field Name                   Field Type   Size (bits)
 494                      // Object ID                    GUID         128             // GUID for Marker object - GETID3_ASF_Marker_Object
 495                      // Object Size                  QWORD        64              // size of Marker object, including 48 bytes of Marker Object header
 496                      // Reserved                     GUID         128             // hardcoded: 4CFEDB20-75F6-11CF-9C0F-00A0C90349CB
 497                      // Markers Count                DWORD        32              // number of Marker structures in Marker Object
 498                      // Reserved                     WORD         16              // hardcoded: 0x0000
 499                      // Name Length                  WORD         16              // number of bytes in the Name field
 500                      // Name                         WCHAR        variable        // name of the Marker Object
 501                      // Markers                      array of:    variable        //
 502                      // * Offset                     QWORD        64              // byte offset into Data Object
 503                      // * Presentation Time          QWORD        64              // in 100-nanosecond units
 504                      // * Entry Length               WORD         16              // length in bytes of (Send Time + Flags + Marker Description Length + Marker Description + Padding)
 505                      // * Send Time                  DWORD        32              // in milliseconds
 506                      // * Flags                      DWORD        32              // hardcoded: 0x00000000
 507                      // * Marker Description Length  DWORD        32              // number of bytes in Marker Description field
 508                      // * Marker Description         WCHAR        variable        // array of Unicode characters - description of marker entry
 509                      // * Padding                    BYTESTREAM   variable        // optional padding bytes
 510  
 511                      // shortcut
 512                      $thisfile_asf['marker_object'] = array();
 513                      $thisfile_asf_markerobject     = &$thisfile_asf['marker_object'];
 514  
 515                      $thisfile_asf_markerobject['offset']               = $NextObjectOffset + $offset;
 516                      $thisfile_asf_markerobject['objectid']             = $NextObjectGUID;
 517                      $thisfile_asf_markerobject['objectid_guid']        = $NextObjectGUIDtext;
 518                      $thisfile_asf_markerobject['objectsize']           = $NextObjectSize;
 519                      $thisfile_asf_markerobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 520                      $offset += 16;
 521                      $thisfile_asf_markerobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_markerobject['reserved']);
 522                      if ($thisfile_asf_markerobject['reserved'] != $this->GUIDtoBytestring('4CFEDB20-75F6-11CF-9C0F-00A0C90349CB')) {
 523                          $info['warning'][] = 'marker_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_markerobject['reserved_1']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4CFEDB20-75F6-11CF-9C0F-00A0C90349CB}';
 524                          break;
 525                      }
 526                      $thisfile_asf_markerobject['markers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 527                      $offset += 4;
 528                      $thisfile_asf_markerobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 529                      $offset += 2;
 530                      if ($thisfile_asf_markerobject['reserved_2'] != 0) {
 531                          $info['warning'][] = 'marker_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_markerobject['reserved_2']).') does not match expected value of "0"';
 532                          break;
 533                      }
 534                      $thisfile_asf_markerobject['name_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 535                      $offset += 2;
 536                      $thisfile_asf_markerobject['name'] = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['name_length']);
 537                      $offset += $thisfile_asf_markerobject['name_length'];
 538                      for ($MarkersCounter = 0; $MarkersCounter < $thisfile_asf_markerobject['markers_count']; $MarkersCounter++) {
 539                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['offset']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 540                          $offset += 8;
 541                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['presentation_time']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
 542                          $offset += 8;
 543                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length']              = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 544                          $offset += 2;
 545                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['send_time']                 = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 546                          $offset += 4;
 547                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['flags']                     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 548                          $offset += 4;
 549                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 550                          $offset += 4;
 551                          $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description']        = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']);
 552                          $offset += $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
 553                          $PaddingLength = $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length'] - 4 -  4 - 4 - $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
 554                          if ($PaddingLength > 0) {
 555                              $thisfile_asf_markerobject['markers'][$MarkersCounter]['padding']               = substr($ASFHeaderData, $offset, $PaddingLength);
 556                              $offset += $PaddingLength;
 557                          }
 558                      }
 559                      break;
 560  
 561                  case GETID3_ASF_Bitrate_Mutual_Exclusion_Object:
 562                      // Bitrate Mutual Exclusion Object: (optional)
 563                      // Field Name                   Field Type   Size (bits)
 564                      // Object ID                    GUID         128             // GUID for Bitrate Mutual Exclusion object - GETID3_ASF_Bitrate_Mutual_Exclusion_Object
 565                      // Object Size                  QWORD        64              // size of Bitrate Mutual Exclusion object, including 42 bytes of Bitrate Mutual Exclusion Object header
 566                      // Exlusion Type                GUID         128             // nature of mutual exclusion relationship. one of: (GETID3_ASF_Mutex_Bitrate, GETID3_ASF_Mutex_Unknown)
 567                      // Stream Numbers Count         WORD         16              // number of video streams
 568                      // Stream Numbers               WORD         variable        // array of mutually exclusive video stream numbers. 1 <= valid <= 127
 569  
 570                      // shortcut
 571                      $thisfile_asf['bitrate_mutual_exclusion_object'] = array();
 572                      $thisfile_asf_bitratemutualexclusionobject       = &$thisfile_asf['bitrate_mutual_exclusion_object'];
 573  
 574                      $thisfile_asf_bitratemutualexclusionobject['offset']               = $NextObjectOffset + $offset;
 575                      $thisfile_asf_bitratemutualexclusionobject['objectid']             = $NextObjectGUID;
 576                      $thisfile_asf_bitratemutualexclusionobject['objectid_guid']        = $NextObjectGUIDtext;
 577                      $thisfile_asf_bitratemutualexclusionobject['objectsize']           = $NextObjectSize;
 578                      $thisfile_asf_bitratemutualexclusionobject['reserved']             = substr($ASFHeaderData, $offset, 16);
 579                      $thisfile_asf_bitratemutualexclusionobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']);
 580                      $offset += 16;
 581                      if (($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Bitrate) && ($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Unknown)) {
 582                          $info['warning'][] = 'bitrate_mutual_exclusion_object.reserved GUID {'.$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).'}';
 583                          //return false;
 584                          break;
 585                      }
 586                      $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 587                      $offset += 2;
 588                      for ($StreamNumberCounter = 0; $StreamNumberCounter < $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count']; $StreamNumberCounter++) {
 589                          $thisfile_asf_bitratemutualexclusionobject['stream_numbers'][$StreamNumberCounter] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 590                          $offset += 2;
 591                      }
 592                      break;
 593  
 594                  case GETID3_ASF_Error_Correction_Object:
 595                      // Error Correction Object: (optional, one only)
 596                      // Field Name                   Field Type   Size (bits)
 597                      // Object ID                    GUID         128             // GUID for Error Correction object - GETID3_ASF_Error_Correction_Object
 598                      // Object Size                  QWORD        64              // size of Error Correction object, including 44 bytes of Error Correction Object header
 599                      // Error Correction Type        GUID         128             // type of error correction. one of: (GETID3_ASF_No_Error_Correction, GETID3_ASF_Audio_Spread)
 600                      // Error Correction Data Length DWORD        32              // number of bytes in Error Correction Data field
 601                      // Error Correction Data        BYTESTREAM   variable        // structure depends on value of Error Correction Type field
 602  
 603                      // shortcut
 604                      $thisfile_asf['error_correction_object'] = array();
 605                      $thisfile_asf_errorcorrectionobject      = &$thisfile_asf['error_correction_object'];
 606  
 607                      $thisfile_asf_errorcorrectionobject['offset']                = $NextObjectOffset + $offset;
 608                      $thisfile_asf_errorcorrectionobject['objectid']              = $NextObjectGUID;
 609                      $thisfile_asf_errorcorrectionobject['objectid_guid']         = $NextObjectGUIDtext;
 610                      $thisfile_asf_errorcorrectionobject['objectsize']            = $NextObjectSize;
 611                      $thisfile_asf_errorcorrectionobject['error_correction_type'] = substr($ASFHeaderData, $offset, 16);
 612                      $offset += 16;
 613                      $thisfile_asf_errorcorrectionobject['error_correction_guid'] = $this->BytestringToGUID($thisfile_asf_errorcorrectionobject['error_correction_type']);
 614                      $thisfile_asf_errorcorrectionobject['error_correction_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 615                      $offset += 4;
 616                      switch ($thisfile_asf_errorcorrectionobject['error_correction_type']) {
 617                          case GETID3_ASF_No_Error_Correction:
 618                              // should be no data, but just in case there is, skip to the end of the field
 619                              $offset += $thisfile_asf_errorcorrectionobject['error_correction_data_length'];
 620                              break;
 621  
 622                          case GETID3_ASF_Audio_Spread:
 623                              // Field Name                   Field Type   Size (bits)
 624                              // Span                         BYTE         8               // number of packets over which audio will be spread.
 625                              // Virtual Packet Length        WORD         16              // size of largest audio payload found in audio stream
 626                              // Virtual Chunk Length         WORD         16              // size of largest audio payload found in audio stream
 627                              // Silence Data Length          WORD         16              // number of bytes in Silence Data field
 628                              // Silence Data                 BYTESTREAM   variable        // hardcoded: 0x00 * (Silence Data Length) bytes
 629  
 630                              $thisfile_asf_errorcorrectionobject['span']                  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 1));
 631                              $offset += 1;
 632                              $thisfile_asf_errorcorrectionobject['virtual_packet_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 633                              $offset += 2;
 634                              $thisfile_asf_errorcorrectionobject['virtual_chunk_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 635                              $offset += 2;
 636                              $thisfile_asf_errorcorrectionobject['silence_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 637                              $offset += 2;
 638                              $thisfile_asf_errorcorrectionobject['silence_data']          = substr($ASFHeaderData, $offset, $thisfile_asf_errorcorrectionobject['silence_data_length']);
 639                              $offset += $thisfile_asf_errorcorrectionobject['silence_data_length'];
 640                              break;
 641  
 642                          default:
 643                              $info['warning'][] = 'error_correction_object.error_correction_type GUID {'.$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).'}';
 644                              //return false;
 645                              break;
 646                      }
 647  
 648                      break;
 649  
 650                  case GETID3_ASF_Content_Description_Object:
 651                      // Content Description Object: (optional, one only)
 652                      // Field Name                   Field Type   Size (bits)
 653                      // Object ID                    GUID         128             // GUID for Content Description object - GETID3_ASF_Content_Description_Object
 654                      // Object Size                  QWORD        64              // size of Content Description object, including 34 bytes of Content Description Object header
 655                      // Title Length                 WORD         16              // number of bytes in Title field
 656                      // Author Length                WORD         16              // number of bytes in Author field
 657                      // Copyright Length             WORD         16              // number of bytes in Copyright field
 658                      // Description Length           WORD         16              // number of bytes in Description field
 659                      // Rating Length                WORD         16              // number of bytes in Rating field
 660                      // Title                        WCHAR        16              // array of Unicode characters - Title
 661                      // Author                       WCHAR        16              // array of Unicode characters - Author
 662                      // Copyright                    WCHAR        16              // array of Unicode characters - Copyright
 663                      // Description                  WCHAR        16              // array of Unicode characters - Description
 664                      // Rating                       WCHAR        16              // array of Unicode characters - Rating
 665  
 666                      // shortcut
 667                      $thisfile_asf['content_description_object'] = array();
 668                      $thisfile_asf_contentdescriptionobject      = &$thisfile_asf['content_description_object'];
 669  
 670                      $thisfile_asf_contentdescriptionobject['offset']                = $NextObjectOffset + $offset;
 671                      $thisfile_asf_contentdescriptionobject['objectid']              = $NextObjectGUID;
 672                      $thisfile_asf_contentdescriptionobject['objectid_guid']         = $NextObjectGUIDtext;
 673                      $thisfile_asf_contentdescriptionobject['objectsize']            = $NextObjectSize;
 674                      $thisfile_asf_contentdescriptionobject['title_length']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 675                      $offset += 2;
 676                      $thisfile_asf_contentdescriptionobject['author_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 677                      $offset += 2;
 678                      $thisfile_asf_contentdescriptionobject['copyright_length']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 679                      $offset += 2;
 680                      $thisfile_asf_contentdescriptionobject['description_length']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 681                      $offset += 2;
 682                      $thisfile_asf_contentdescriptionobject['rating_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 683                      $offset += 2;
 684                      $thisfile_asf_contentdescriptionobject['title']                 = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['title_length']);
 685                      $offset += $thisfile_asf_contentdescriptionobject['title_length'];
 686                      $thisfile_asf_contentdescriptionobject['author']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['author_length']);
 687                      $offset += $thisfile_asf_contentdescriptionobject['author_length'];
 688                      $thisfile_asf_contentdescriptionobject['copyright']             = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['copyright_length']);
 689                      $offset += $thisfile_asf_contentdescriptionobject['copyright_length'];
 690                      $thisfile_asf_contentdescriptionobject['description']           = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['description_length']);
 691                      $offset += $thisfile_asf_contentdescriptionobject['description_length'];
 692                      $thisfile_asf_contentdescriptionobject['rating']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['rating_length']);
 693                      $offset += $thisfile_asf_contentdescriptionobject['rating_length'];
 694  
 695                      $ASFcommentKeysToCopy = array('title'=>'title', 'author'=>'artist', 'copyright'=>'copyright', 'description'=>'comment', 'rating'=>'rating');
 696                      foreach ($ASFcommentKeysToCopy as $keytocopyfrom => $keytocopyto) {
 697                          if (!empty($thisfile_asf_contentdescriptionobject[$keytocopyfrom])) {
 698                              $thisfile_asf_comments[$keytocopyto][] = $this->TrimTerm($thisfile_asf_contentdescriptionobject[$keytocopyfrom]);
 699                          }
 700                      }
 701                      break;
 702  
 703                  case GETID3_ASF_Extended_Content_Description_Object:
 704                      // Extended Content Description Object: (optional, one only)
 705                      // Field Name                   Field Type   Size (bits)
 706                      // Object ID                    GUID         128             // GUID for Extended Content Description object - GETID3_ASF_Extended_Content_Description_Object
 707                      // Object Size                  QWORD        64              // size of ExtendedContent Description object, including 26 bytes of Extended Content Description Object header
 708                      // Content Descriptors Count    WORD         16              // number of entries in Content Descriptors list
 709                      // Content Descriptors          array of:    variable        //
 710                      // * Descriptor Name Length     WORD         16              // size in bytes of Descriptor Name field
 711                      // * Descriptor Name            WCHAR        variable        // array of Unicode characters - Descriptor Name
 712                      // * Descriptor Value Data Type WORD         16              // Lookup array:
 713                                                                                      // 0x0000 = Unicode String (variable length)
 714                                                                                      // 0x0001 = BYTE array     (variable length)
 715                                                                                      // 0x0002 = BOOL           (DWORD, 32 bits)
 716                                                                                      // 0x0003 = DWORD          (DWORD, 32 bits)
 717                                                                                      // 0x0004 = QWORD          (QWORD, 64 bits)
 718                                                                                      // 0x0005 = WORD           (WORD,  16 bits)
 719                      // * Descriptor Value Length    WORD         16              // number of bytes stored in Descriptor Value field
 720                      // * Descriptor Value           variable     variable        // value for Content Descriptor
 721  
 722                      // shortcut
 723                      $thisfile_asf['extended_content_description_object'] = array();
 724                      $thisfile_asf_extendedcontentdescriptionobject       = &$thisfile_asf['extended_content_description_object'];
 725  
 726                      $thisfile_asf_extendedcontentdescriptionobject['offset']                    = $NextObjectOffset + $offset;
 727                      $thisfile_asf_extendedcontentdescriptionobject['objectid']                  = $NextObjectGUID;
 728                      $thisfile_asf_extendedcontentdescriptionobject['objectid_guid']             = $NextObjectGUIDtext;
 729                      $thisfile_asf_extendedcontentdescriptionobject['objectsize']                = $NextObjectSize;
 730                      $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 731                      $offset += 2;
 732                      for ($ExtendedContentDescriptorsCounter = 0; $ExtendedContentDescriptorsCounter < $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count']; $ExtendedContentDescriptorsCounter++) {
 733                          // shortcut
 734                          $thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter] = array();
 735                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current                 = &$thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter];
 736  
 737                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['base_offset']  = $offset + 30;
 738                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 739                          $offset += 2;
 740                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']         = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']);
 741                          $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length'];
 742                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 743                          $offset += 2;
 744                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 745                          $offset += 2;
 746                          $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']        = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length']);
 747                          $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'];
 748                          switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
 749                              case 0x0000: // Unicode string
 750                                  break;
 751  
 752                              case 0x0001: // BYTE array
 753                                  // do nothing
 754                                  break;
 755  
 756                              case 0x0002: // BOOL
 757                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = (bool) getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 758                                  break;
 759  
 760                              case 0x0003: // DWORD
 761                              case 0x0004: // QWORD
 762                              case 0x0005: // WORD
 763                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 764                                  break;
 765  
 766                              default:
 767                                  $info['warning'][] = 'extended_content_description.content_descriptors.'.$ExtendedContentDescriptorsCounter.'.value_type is invalid ('.$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type'].')';
 768                                  //return false;
 769                                  break;
 770                          }
 771                          switch ($this->TrimConvert(strtolower($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']))) {
 772  
 773                              case 'wm/albumartist':
 774                              case 'artist':
 775                                  // Note: not 'artist', that comes from 'author' tag
 776                                  $thisfile_asf_comments['albumartist'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 777                                  break;
 778  
 779                              case 'wm/albumtitle':
 780                              case 'album':
 781                                  $thisfile_asf_comments['album']  = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 782                                  break;
 783  
 784                              case 'wm/genre':
 785                              case 'genre':
 786                                  $thisfile_asf_comments['genre'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 787                                  break;
 788  
 789                              case 'wm/partofset':
 790                                  $thisfile_asf_comments['partofset'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 791                                  break;
 792  
 793                              case 'wm/tracknumber':
 794                              case 'tracknumber':
 795                                  // be careful casting to int: casting unicode strings to int gives unexpected results (stops parsing at first non-numeric character)
 796                                  $thisfile_asf_comments['track'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 797                                  foreach ($thisfile_asf_comments['track'] as $key => $value) {
 798                                      if (preg_match('/^[0-9\x00]+$/', $value)) {
 799                                          $thisfile_asf_comments['track'][$key] = intval(str_replace("\x00", '', $value));
 800                                      }
 801                                  }
 802                                  break;
 803  
 804                              case 'wm/track':
 805                                  if (empty($thisfile_asf_comments['track'])) {
 806                                      $thisfile_asf_comments['track'] = array(1 + $this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 807                                  }
 808                                  break;
 809  
 810                              case 'wm/year':
 811                              case 'year':
 812                              case 'date':
 813                                  $thisfile_asf_comments['year'] = array( $this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 814                                  break;
 815  
 816                              case 'wm/lyrics':
 817                              case 'lyrics':
 818                                  $thisfile_asf_comments['lyrics'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 819                                  break;
 820  
 821                              case 'isvbr':
 822                                  if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']) {
 823                                      $thisfile_audio['bitrate_mode'] = 'vbr';
 824                                      $thisfile_video['bitrate_mode'] = 'vbr';
 825                                  }
 826                                  break;
 827  
 828                              case 'id3':
 829                                  // id3v2 module might not be loaded
 830                                  if (class_exists('getid3_id3v2')) {
 831                                      $tempfile         = tempnam(GETID3_TEMP_DIR, 'getID3');
 832                                      $tempfilehandle   = fopen($tempfile, 'wb');
 833                                      $tempThisfileInfo = array('encoding'=>$info['encoding']);
 834                                      fwrite($tempfilehandle, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 835                                      fclose($tempfilehandle);
 836  
 837                                      $getid3_temp = new getID3();
 838                                      $getid3_temp->openfile($tempfile);
 839                                      $getid3_id3v2 = new getid3_id3v2($getid3_temp);
 840                                      $getid3_id3v2->Analyze();
 841                                      $info['id3v2'] = $getid3_temp->info['id3v2'];
 842                                      unset($getid3_temp, $getid3_id3v2);
 843  
 844                                      unlink($tempfile);
 845                                  }
 846                                  break;
 847  
 848                              case 'wm/encodingtime':
 849                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 850                                  $thisfile_asf_comments['encoding_time_unix'] = array($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix']);
 851                                  break;
 852  
 853                              case 'wm/picture':
 854                                  $WMpicture = $this->ASF_WMpicture($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 855                                  foreach ($WMpicture as $key => $value) {
 856                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current[$key] = $value;
 857                                  }
 858                                  unset($WMpicture);
 859  /*
 860                                  $wm_picture_offset = 0;
 861                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 1));
 862                                  $wm_picture_offset += 1;
 863                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type']    = $this->WMpictureTypeLookup($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id']);
 864                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_size']    = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 4));
 865                                  $wm_picture_offset += 4;
 866  
 867                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
 868                                  do {
 869                                      $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
 870                                      $wm_picture_offset += 2;
 871                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] .= $next_byte_pair;
 872                                  } while ($next_byte_pair !== "\x00\x00");
 873  
 874                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] = '';
 875                                  do {
 876                                      $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
 877                                      $wm_picture_offset += 2;
 878                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] .= $next_byte_pair;
 879                                  } while ($next_byte_pair !== "\x00\x00");
 880  
 881                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['dataoffset'] = $wm_picture_offset;
 882                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'] = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset);
 883                                  unset($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
 884  
 885                                  $imageinfo = array();
 886                                  $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
 887                                  $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], $imageinfo);
 888                                  unset($imageinfo);
 889                                  if (!empty($imagechunkcheck)) {
 890                                      $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
 891                                  }
 892                                  if (!isset($thisfile_asf_comments['picture'])) {
 893                                      $thisfile_asf_comments['picture'] = array();
 894                                  }
 895                                  $thisfile_asf_comments['picture'][] = array('data'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], 'image_mime'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime']);
 896  */
 897                                  break;
 898  
 899                              default:
 900                                  switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
 901                                      case 0: // Unicode string
 902                                          if (substr($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']), 0, 3) == 'WM/') {
 903                                              $thisfile_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'])))] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
 904                                          }
 905                                          break;
 906  
 907                                      case 1:
 908                                          break;
 909                                  }
 910                                  break;
 911                          }
 912  
 913                      }
 914                      break;
 915  
 916                  case GETID3_ASF_Stream_Bitrate_Properties_Object:
 917                      // Stream Bitrate Properties Object: (optional, one only)
 918                      // Field Name                   Field Type   Size (bits)
 919                      // Object ID                    GUID         128             // GUID for Stream Bitrate Properties object - GETID3_ASF_Stream_Bitrate_Properties_Object
 920                      // Object Size                  QWORD        64              // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header
 921                      // Bitrate Records Count        WORD         16              // number of records in Bitrate Records
 922                      // Bitrate Records              array of:    variable        //
 923                      // * Flags                      WORD         16              //
 924                      // * * Stream Number            bits         7  (0x007F)     // number of this stream
 925                      // * * Reserved                 bits         9  (0xFF80)     // hardcoded: 0
 926                      // * Average Bitrate            DWORD        32              // in bits per second
 927  
 928                      // shortcut
 929                      $thisfile_asf['stream_bitrate_properties_object'] = array();
 930                      $thisfile_asf_streambitratepropertiesobject       = &$thisfile_asf['stream_bitrate_properties_object'];
 931  
 932                      $thisfile_asf_streambitratepropertiesobject['offset']                    = $NextObjectOffset + $offset;
 933                      $thisfile_asf_streambitratepropertiesobject['objectid']                  = $NextObjectGUID;
 934                      $thisfile_asf_streambitratepropertiesobject['objectid_guid']             = $NextObjectGUIDtext;
 935                      $thisfile_asf_streambitratepropertiesobject['objectsize']                = $NextObjectSize;
 936                      $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 937                      $offset += 2;
 938                      for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
 939                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
 940                          $offset += 2;
 941                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags']['stream_number'] = $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] & 0x007F;
 942                          $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
 943                          $offset += 4;
 944                      }
 945                      break;
 946  
 947                  case GETID3_ASF_Padding_Object:
 948                      // Padding Object: (optional)
 949                      // Field Name                   Field Type   Size (bits)
 950                      // Object ID                    GUID         128             // GUID for Padding object - GETID3_ASF_Padding_Object
 951                      // Object Size                  QWORD        64              // size of Padding object, including 24 bytes of ASF Padding Object header
 952                      // Padding Data                 BYTESTREAM   variable        // ignore
 953  
 954                      // shortcut
 955                      $thisfile_asf['padding_object'] = array();
 956                      $thisfile_asf_paddingobject     = &$thisfile_asf['padding_object'];
 957  
 958                      $thisfile_asf_paddingobject['offset']                    = $NextObjectOffset + $offset;
 959                      $thisfile_asf_paddingobject['objectid']                  = $NextObjectGUID;
 960                      $thisfile_asf_paddingobject['objectid_guid']             = $NextObjectGUIDtext;
 961                      $thisfile_asf_paddingobject['objectsize']                = $NextObjectSize;
 962                      $thisfile_asf_paddingobject['padding_length']            = $thisfile_asf_paddingobject['objectsize'] - 16 - 8;
 963                      $thisfile_asf_paddingobject['padding']                   = substr($ASFHeaderData, $offset, $thisfile_asf_paddingobject['padding_length']);
 964                      $offset += ($NextObjectSize - 16 - 8);
 965                      break;
 966  
 967                  case GETID3_ASF_Extended_Content_Encryption_Object:
 968                  case GETID3_ASF_Content_Encryption_Object:
 969                      // WMA DRM - just ignore
 970                      $offset += ($NextObjectSize - 16 - 8);
 971                      break;
 972  
 973                  default:
 974                      // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
 975                      if ($this->GUIDname($NextObjectGUIDtext)) {
 976                          $info['warning'][] = 'unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8);
 977                      } else {
 978                          $info['warning'][] = 'unknown GUID {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8);
 979                      }
 980                      $offset += ($NextObjectSize - 16 - 8);
 981                      break;
 982              }
 983          }
 984          if (isset($thisfile_asf_streambitrateproperties['bitrate_records_count'])) {
 985              $ASFbitrateAudio = 0;
 986              $ASFbitrateVideo = 0;
 987              for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitrateproperties['bitrate_records_count']; $BitrateRecordsCounter++) {
 988                  if (isset($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter])) {
 989                      switch ($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter]['type_raw']) {
 990                          case 1:
 991                              $ASFbitrateVideo += $thisfile_asf_streambitrateproperties['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
 992                              break;
 993  
 994                          case 2:
 995                              $ASFbitrateAudio += $thisfile_asf_streambitrateproperties['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
 996                              break;
 997  
 998                          default:
 999                              // do nothing
1000                              break;
1001                      }
1002                  }
1003              }
1004              if ($ASFbitrateAudio > 0) {
1005                  $thisfile_audio['bitrate'] = $ASFbitrateAudio;
1006              }
1007              if ($ASFbitrateVideo > 0) {
1008                  $thisfile_video['bitrate'] = $ASFbitrateVideo;
1009              }
1010          }
1011          if (isset($thisfile_asf['stream_properties_object']) && is_array($thisfile_asf['stream_properties_object'])) {
1012  
1013              $thisfile_audio['bitrate'] = 0;
1014              $thisfile_video['bitrate'] = 0;
1015  
1016              foreach ($thisfile_asf['stream_properties_object'] as $streamnumber => $streamdata) {
1017  
1018                  switch ($streamdata['stream_type']) {
1019                      case GETID3_ASF_Audio_Media:
1020                          // Field Name                   Field Type   Size (bits)
1021                          // Codec ID / Format Tag        WORD         16              // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure
1022                          // Number of Channels           WORD         16              // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure
1023                          // Samples Per Second           DWORD        32              // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure
1024                          // Average number of Bytes/sec  DWORD        32              // bytes/sec of audio stream  - defined as nAvgBytesPerSec field of WAVEFORMATEX structure
1025                          // Block Alignment              WORD         16              // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure
1026                          // 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
1027                          // Codec Specific Data Size     WORD         16              // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure
1028                          // Codec Specific Data          BYTESTREAM   variable        // array of codec-specific data bytes
1029  
1030                          // shortcut
1031                          $thisfile_asf['audio_media'][$streamnumber] = array();
1032                          $thisfile_asf_audiomedia_currentstream      = &$thisfile_asf['audio_media'][$streamnumber];
1033  
1034                          $audiomediaoffset = 0;
1035  
1036                          $thisfile_asf_audiomedia_currentstream = getid3_riff::parseWAVEFORMATex(substr($streamdata['type_specific_data'], $audiomediaoffset, 16));
1037                          $audiomediaoffset += 16;
1038  
1039                          $thisfile_audio['lossless'] = false;
1040                          switch ($thisfile_asf_audiomedia_currentstream['raw']['wFormatTag']) {
1041                              case 0x0001: // PCM
1042                              case 0x0163: // WMA9 Lossless
1043                                  $thisfile_audio['lossless'] = true;
1044                                  break;
1045                          }
1046  
1047                          if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1048                              foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1049                                  if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1050                                      $thisfile_asf_audiomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1051                                      $thisfile_audio['bitrate'] += $dataarray['bitrate'];
1052                                      break;
1053                                  }
1054                              }
1055                          } else {
1056                              if (!empty($thisfile_asf_audiomedia_currentstream['bytes_sec'])) {
1057                                  $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bytes_sec'] * 8;
1058                              } elseif (!empty($thisfile_asf_audiomedia_currentstream['bitrate'])) {
1059                                  $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bitrate'];
1060                              }
1061                          }
1062                          $thisfile_audio['streams'][$streamnumber]                = $thisfile_asf_audiomedia_currentstream;
1063                          $thisfile_audio['streams'][$streamnumber]['wformattag']  = $thisfile_asf_audiomedia_currentstream['raw']['wFormatTag'];
1064                          $thisfile_audio['streams'][$streamnumber]['lossless']    = $thisfile_audio['lossless'];
1065                          $thisfile_audio['streams'][$streamnumber]['bitrate']     = $thisfile_audio['bitrate'];
1066                          $thisfile_audio['streams'][$streamnumber]['dataformat']  = 'wma';
1067                          unset($thisfile_audio['streams'][$streamnumber]['raw']);
1068  
1069                          $thisfile_asf_audiomedia_currentstream['codec_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $audiomediaoffset, 2));
1070                          $audiomediaoffset += 2;
1071                          $thisfile_asf_audiomedia_currentstream['codec_data']      = substr($streamdata['type_specific_data'], $audiomediaoffset, $thisfile_asf_audiomedia_currentstream['codec_data_size']);
1072                          $audiomediaoffset += $thisfile_asf_audiomedia_currentstream['codec_data_size'];
1073  
1074                          break;
1075  
1076                      case GETID3_ASF_Video_Media:
1077                          // Field Name                   Field Type   Size (bits)
1078                          // Encoded Image Width          DWORD        32              // width of image in pixels
1079                          // Encoded Image Height         DWORD        32              // height of image in pixels
1080                          // Reserved Flags               BYTE         8               // hardcoded: 0x02
1081                          // Format Data Size             WORD         16              // size of Format Data field in bytes
1082                          // Format Data                  array of:    variable        //
1083                          // * Format Data Size           DWORD        32              // number of bytes in Format Data field, in bytes - defined as biSize field of BITMAPINFOHEADER structure
1084                          // * Image Width                LONG         32              // width of encoded image in pixels - defined as biWidth field of BITMAPINFOHEADER structure
1085                          // * Image Height               LONG         32              // height of encoded image in pixels - defined as biHeight field of BITMAPINFOHEADER structure
1086                          // * Reserved                   WORD         16              // hardcoded: 0x0001 - defined as biPlanes field of BITMAPINFOHEADER structure
1087                          // * Bits Per Pixel Count       WORD         16              // bits per pixel - defined as biBitCount field of BITMAPINFOHEADER structure
1088                          // * Compression ID             FOURCC       32              // fourcc of video codec - defined as biCompression field of BITMAPINFOHEADER structure
1089                          // * Image Size                 DWORD        32              // image size in bytes - defined as biSizeImage field of BITMAPINFOHEADER structure
1090                          // * Horizontal Pixels / Meter  DWORD        32              // horizontal resolution of target device in pixels per meter - defined as biXPelsPerMeter field of BITMAPINFOHEADER structure
1091                          // * Vertical Pixels / Meter    DWORD        32              // vertical resolution of target device in pixels per meter - defined as biYPelsPerMeter field of BITMAPINFOHEADER structure
1092                          // * Colors Used Count          DWORD        32              // number of color indexes in the color table that are actually used - defined as biClrUsed field of BITMAPINFOHEADER structure
1093                          // * 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
1094                          // * Codec Specific Data        BYTESTREAM   variable        // array of codec-specific data bytes
1095  
1096                          // shortcut
1097                          $thisfile_asf['video_media'][$streamnumber] = array();
1098                          $thisfile_asf_videomedia_currentstream      = &$thisfile_asf['video_media'][$streamnumber];
1099  
1100                          $videomediaoffset = 0;
1101                          $thisfile_asf_videomedia_currentstream['image_width']                     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1102                          $videomediaoffset += 4;
1103                          $thisfile_asf_videomedia_currentstream['image_height']                    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1104                          $videomediaoffset += 4;
1105                          $thisfile_asf_videomedia_currentstream['flags']                           = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 1));
1106                          $videomediaoffset += 1;
1107                          $thisfile_asf_videomedia_currentstream['format_data_size']                = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1108                          $videomediaoffset += 2;
1109                          $thisfile_asf_videomedia_currentstream['format_data']['format_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1110                          $videomediaoffset += 4;
1111                          $thisfile_asf_videomedia_currentstream['format_data']['image_width']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1112                          $videomediaoffset += 4;
1113                          $thisfile_asf_videomedia_currentstream['format_data']['image_height']     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1114                          $videomediaoffset += 4;
1115                          $thisfile_asf_videomedia_currentstream['format_data']['reserved']         = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1116                          $videomediaoffset += 2;
1117                          $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel']   = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1118                          $videomediaoffset += 2;
1119                          $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']     = substr($streamdata['type_specific_data'], $videomediaoffset, 4);
1120                          $videomediaoffset += 4;
1121                          $thisfile_asf_videomedia_currentstream['format_data']['image_size']       = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1122                          $videomediaoffset += 4;
1123                          $thisfile_asf_videomedia_currentstream['format_data']['horizontal_pels']  = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1124                          $videomediaoffset += 4;
1125                          $thisfile_asf_videomedia_currentstream['format_data']['vertical_pels']    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1126                          $videomediaoffset += 4;
1127                          $thisfile_asf_videomedia_currentstream['format_data']['colors_used']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1128                          $videomediaoffset += 4;
1129                          $thisfile_asf_videomedia_currentstream['format_data']['colors_important'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1130                          $videomediaoffset += 4;
1131                          $thisfile_asf_videomedia_currentstream['format_data']['codec_data']       = substr($streamdata['type_specific_data'], $videomediaoffset);
1132  
1133                          if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1134                              foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1135                                  if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1136                                      $thisfile_asf_videomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1137                                      $thisfile_video['streams'][$streamnumber]['bitrate'] = $dataarray['bitrate'];
1138                                      $thisfile_video['bitrate'] += $dataarray['bitrate'];
1139                                      break;
1140                                  }
1141                              }
1142                          }
1143  
1144                          $thisfile_asf_videomedia_currentstream['format_data']['codec'] = getid3_riff::fourccLookup($thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']);
1145  
1146                          $thisfile_video['streams'][$streamnumber]['fourcc']          = $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc'];
1147                          $thisfile_video['streams'][$streamnumber]['codec']           = $thisfile_asf_videomedia_currentstream['format_data']['codec'];
1148                          $thisfile_video['streams'][$streamnumber]['resolution_x']    = $thisfile_asf_videomedia_currentstream['image_width'];
1149                          $thisfile_video['streams'][$streamnumber]['resolution_y']    = $thisfile_asf_videomedia_currentstream['image_height'];
1150                          $thisfile_video['streams'][$streamnumber]['bits_per_sample'] = $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel'];
1151                          break;
1152  
1153                      default:
1154                          break;
1155                  }
1156              }
1157          }
1158  
1159          while (ftell($this->getid3->fp) < $info['avdataend']) {
1160              $NextObjectDataHeader = fread($this->getid3->fp, 24);
1161              $offset = 0;
1162              $NextObjectGUID = substr($NextObjectDataHeader, 0, 16);
1163              $offset += 16;
1164              $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
1165              $NextObjectSize = getid3_lib::LittleEndian2Int(substr($NextObjectDataHeader, $offset, 8));
1166              $offset += 8;
1167  
1168              switch ($NextObjectGUID) {
1169                  case GETID3_ASF_Data_Object:
1170                      // Data Object: (mandatory, one only)
1171                      // Field Name                       Field Type   Size (bits)
1172                      // Object ID                        GUID         128             // GUID for Data object - GETID3_ASF_Data_Object
1173                      // Object Size                      QWORD        64              // size of Data object, including 50 bytes of Data Object header. may be 0 if FilePropertiesObject.BroadcastFlag == 1
1174                      // File ID                          GUID         128             // unique identifier. identical to File ID field in Header Object
1175                      // Total Data Packets               QWORD        64              // number of Data Packet entries in Data Object. invalid if FilePropertiesObject.BroadcastFlag == 1
1176                      // Reserved                         WORD         16              // hardcoded: 0x0101
1177  
1178                      // shortcut
1179                      $thisfile_asf['data_object'] = array();
1180                      $thisfile_asf_dataobject     = &$thisfile_asf['data_object'];
1181  
1182                      $DataObjectData = $NextObjectDataHeader.fread($this->getid3->fp, 50 - 24);
1183                      $offset = 24;
1184  
1185                      $thisfile_asf_dataobject['objectid']           = $NextObjectGUID;
1186                      $thisfile_asf_dataobject['objectid_guid']      = $NextObjectGUIDtext;
1187                      $thisfile_asf_dataobject['objectsize']         = $NextObjectSize;
1188  
1189                      $thisfile_asf_dataobject['fileid']             = substr($DataObjectData, $offset, 16);
1190                      $offset += 16;
1191                      $thisfile_asf_dataobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_dataobject['fileid']);
1192                      $thisfile_asf_dataobject['total_data_packets'] = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 8));
1193                      $offset += 8;
1194                      $thisfile_asf_dataobject['reserved']           = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 2));
1195                      $offset += 2;
1196                      if ($thisfile_asf_dataobject['reserved'] != 0x0101) {
1197                          $info['warning'][] = 'data_object.reserved ('.getid3_lib::PrintHexBytes($thisfile_asf_dataobject['reserved']).') does not match expected value of "0x0101"';
1198                          //return false;
1199                          break;
1200                      }
1201  
1202                      // Data Packets                     array of:    variable        //
1203                      // * Error Correction Flags         BYTE         8               //
1204                      // * * Error Correction Data Length bits         4               // if Error Correction Length Type == 00, size of Error Correction Data in bytes, else hardcoded: 0000
1205                      // * * Opaque Data Present          bits         1               //
1206                      // * * Error Correction Length Type bits         2               // number of bits for size of the error correction data. hardcoded: 00
1207                      // * * Error Correction Present     bits         1               // If set, use Opaque Data Packet structure, else use Payload structure
1208                      // * Error Correction Data
1209  
1210                      $info['avdataoffset'] = ftell($this->getid3->fp);
1211                      fseek($this->getid3->fp, ($thisfile_asf_dataobject['objectsize'] - 50), SEEK_CUR); // skip actual audio/video data
1212                      $info['avdataend'] = ftell($this->getid3->fp);
1213                      break;
1214  
1215                  case GETID3_ASF_Simple_Index_Object:
1216                      // Simple Index Object: (optional, recommended, one per video stream)
1217                      // Field Name                       Field Type   Size (bits)
1218                      // Object ID                        GUID         128             // GUID for Simple Index object - GETID3_ASF_Data_Object
1219                      // Object Size                      QWORD        64              // size of Simple Index object, including 56 bytes of Simple Index Object header
1220                      // File ID                          GUID         128             // unique identifier. may be zero or identical to File ID field in Data Object and Header Object
1221                      // Index Entry Time Interval        QWORD        64              // interval between index entries in 100-nanosecond units
1222                      // Maximum Packet Count             DWORD        32              // maximum packet count for all index entries
1223                      // Index Entries Count              DWORD        32              // number of Index Entries structures
1224                      // Index Entries                    array of:    variable        //
1225                      // * Packet Number                  DWORD        32              // number of the Data Packet associated with this index entry
1226                      // * Packet Count                   WORD         16              // number of Data Packets to sent at this index entry
1227  
1228                      // shortcut
1229                      $thisfile_asf['simple_index_object'] = array();
1230                      $thisfile_asf_simpleindexobject      = &$thisfile_asf['simple_index_object'];
1231  
1232                      $SimpleIndexObjectData = $NextObjectDataHeader.fread($this->getid3->fp, 56 - 24);
1233                      $offset = 24;
1234  
1235                      $thisfile_asf_simpleindexobject['objectid']                  = $NextObjectGUID;
1236                      $thisfile_asf_simpleindexobject['objectid_guid']             = $NextObjectGUIDtext;
1237                      $thisfile_asf_simpleindexobject['objectsize']                = $NextObjectSize;
1238  
1239                      $thisfile_asf_simpleindexobject['fileid']                    =                  substr($SimpleIndexObjectData, $offset, 16);
1240                      $offset += 16;
1241                      $thisfile_asf_simpleindexobject['fileid_guid']               = $this->BytestringToGUID($thisfile_asf_simpleindexobject['fileid']);
1242                      $thisfile_asf_simpleindexobject['index_entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 8));
1243                      $offset += 8;
1244                      $thisfile_asf_simpleindexobject['maximum_packet_count']      = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1245                      $offset += 4;
1246                      $thisfile_asf_simpleindexobject['index_entries_count']       = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1247                      $offset += 4;
1248  
1249                      $IndexEntriesData = $SimpleIndexObjectData.fread($this->getid3->fp, 6 * $thisfile_asf_simpleindexobject['index_entries_count']);
1250                      for ($IndexEntriesCounter = 0; $IndexEntriesCounter < $thisfile_asf_simpleindexobject['index_entries_count']; $IndexEntriesCounter++) {
1251                          $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_number'] = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1252                          $offset += 4;
1253                          $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_count']  = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1254                          $offset += 2;
1255                      }
1256  
1257                      break;
1258  
1259                  case GETID3_ASF_Index_Object:
1260                      // 6.2 ASF top-level Index Object (optional but recommended when appropriate, 0 or 1)
1261                      // Field Name                       Field Type   Size (bits)
1262                      // Object ID                        GUID         128             // GUID for the Index Object - GETID3_ASF_Index_Object
1263                      // Object Size                      QWORD        64              // Specifies the size, in bytes, of the Index Object, including at least 34 bytes of Index Object header
1264                      // Index Entry Time Interval        DWORD        32              // Specifies the time interval between each index entry in ms.
1265                      // Index Specifiers Count           WORD         16              // Specifies the number of Index Specifiers structures in this Index Object.
1266                      // Index Blocks Count               DWORD        32              // Specifies the number of Index Blocks structures in this Index Object.
1267  
1268                      // Index Entry Time Interval        DWORD        32              // Specifies the time interval between index entries in milliseconds.  This value cannot be 0.
1269                      // Index Specifiers Count           WORD         16              // Specifies the number of entries in the Index Specifiers list.  Valid values are 1 and greater.
1270                      // Index Specifiers                 array of:    varies          //
1271                      // * Stream Number                  WORD         16              // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127.
1272                      // * Index Type                     WORD         16              // Specifies Index Type values as follows:
1273                                                                                      //   1 = Nearest Past Data Packet - indexes point to the data packet whose presentation time is closest to the index entry time.
1274                                                                                      //   2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire object or first fragment of an object.
1275                                                                                      //   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.
1276                                                                                      //   Nearest Past Cleanpoint is the most common type of index.
1277                      // Index Entry Count                DWORD        32              // Specifies the number of Index Entries in the block.
1278                      // * 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.
1279                      // * Index Entries                  array of:    varies          //
1280                      // * * Offsets                      DWORD        varies          // An offset value of 0xffffffff indicates an invalid offset value
1281  
1282                      // shortcut
1283                      $thisfile_asf['asf_index_object'] = array();
1284                      $thisfile_asf_asfindexobject      = &$thisfile_asf['asf_index_object'];
1285  
1286                      $ASFIndexObjectData = $NextObjectDataHeader.fread($this->getid3->fp, 34 - 24);
1287                      $offset = 24;
1288  
1289                      $thisfile_asf_asfindexobject['objectid']                  = $NextObjectGUID;
1290                      $thisfile_asf_asfindexobject['objectid_guid']             = $NextObjectGUIDtext;
1291                      $thisfile_asf_asfindexobject['objectsize']                = $NextObjectSize;
1292  
1293                      $thisfile_asf_asfindexobject['entry_time_interval']       = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1294                      $offset += 4;
1295                      $thisfile_asf_asfindexobject['index_specifiers_count']    = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1296                      $offset += 2;
1297                      $thisfile_asf_asfindexobject['index_blocks_count']        = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1298                      $offset += 4;
1299  
1300                      $ASFIndexObjectData .= fread($this->getid3->fp, 4 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1301                      for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1302                          $IndexSpecifierStreamNumber = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1303                          $offset += 2;
1304                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['stream_number']   = $IndexSpecifierStreamNumber;
1305                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']      = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1306                          $offset += 2;
1307                          $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type_text'] = $this->ASFIndexObjectIndexTypeLookup($thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']);
1308                      }
1309  
1310                      $ASFIndexObjectData .= fread($this->getid3->fp, 4);
1311                      $thisfile_asf_asfindexobject['index_entry_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1312                      $offset += 4;
1313  
1314                      $ASFIndexObjectData .= fread($this->getid3->fp, 8 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1315                      for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1316                          $thisfile_asf_asfindexobject['block_positions'][$IndexSpecifiersCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 8));
1317                          $offset += 8;
1318                      }
1319  
1320                      $ASFIndexObjectData .= fread($this->getid3->fp, 4 * $thisfile_asf_asfindexobject['index_specifiers_count'] * $thisfile_asf_asfindexobject['index_entry_count']);
1321                      for ($IndexEntryCounter = 0; $IndexEntryCounter < $thisfile_asf_asfindexobject['index_entry_count']; $IndexEntryCounter++) {
1322                          for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1323                              $thisfile_asf_asfindexobject['offsets'][$IndexSpecifiersCounter][$IndexEntryCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1324                              $offset += 4;
1325                          }
1326                      }
1327                      break;
1328  
1329  
1330                  default:
1331                      // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
1332                      if ($this->GUIDname($NextObjectGUIDtext)) {
1333                          $info['warning'][] = 'unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF body at offset '.($offset - 16 - 8);
1334                      } else {
1335                          $info['warning'][] = 'unknown GUID {'.$NextObjectGUIDtext.'} in ASF body at offset '.(ftell($this->getid3->fp) - 16 - 8);
1336                      }
1337                      fseek($this->getid3->fp, ($NextObjectSize - 16 - 8), SEEK_CUR);
1338                      break;
1339              }
1340          }
1341  
1342          if (isset($thisfile_asf_codeclistobject['codec_entries']) && is_array($thisfile_asf_codeclistobject['codec_entries'])) {
1343              foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1344                  switch ($streamdata['information']) {
1345                      case 'WMV1':
1346                      case 'WMV2':
1347                      case 'WMV3':
1348                      case 'MSS1':
1349                      case 'MSS2':
1350                      case 'WMVA':
1351                      case 'WVC1':
1352                      case 'WMVP':
1353                      case 'WVP2':
1354                          $thisfile_video['dataformat'] = 'wmv';
1355                          $info['mime_type'] = 'video/x-ms-wmv';
1356                          break;
1357  
1358                      case 'MP42':
1359                      case 'MP43':
1360                      case 'MP4S':
1361                      case 'mp4s':
1362                          $thisfile_video['dataformat'] = 'asf';
1363                          $info['mime_type'] = 'video/x-ms-asf';
1364                          break;
1365  
1366                      default:
1367                          switch ($streamdata['type_raw']) {
1368                              case 1:
1369                                  if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1370                                      $thisfile_video['dataformat'] = 'wmv';
1371                                      if ($info['mime_type'] == 'video/x-ms-asf') {
1372                                          $info['mime_type'] = 'video/x-ms-wmv';
1373                                      }
1374                                  }
1375                                  break;
1376  
1377                              case 2:
1378                                  if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1379                                      $thisfile_audio['dataformat'] = 'wma';
1380                                      if ($info['mime_type'] == 'video/x-ms-asf') {
1381                                          $info['mime_type'] = 'audio/x-ms-wma';
1382                                      }
1383                                  }
1384                                  break;
1385  
1386                          }
1387                          break;
1388                  }
1389              }
1390          }
1391  
1392          switch (isset($thisfile_audio['codec']) ? $thisfile_audio['codec'] : '') {
1393              case 'MPEG Layer-3':
1394                  $thisfile_audio['dataformat'] = 'mp3';
1395                  break;
1396  
1397              default:
1398                  break;
1399          }
1400  
1401          if (isset($thisfile_asf_codeclistobject['codec_entries'])) {
1402              foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1403                  switch ($streamdata['type_raw']) {
1404  
1405                      case 1: // video
1406                          $thisfile_video['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1407                          break;
1408  
1409                      case 2: // audio
1410                          $thisfile_audio['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1411  
1412                          // AH 2003-10-01
1413                          $thisfile_audio['encoder_options'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][0]['description']);
1414  
1415                          $thisfile_audio['codec']   = $thisfile_audio['encoder'];
1416                          break;
1417  
1418                      default:
1419                          $info['warning'][] = 'Unknown streamtype: [codec_list_object][codec_entries]['.$streamnumber.'][type_raw] == '.$streamdata['type_raw'];
1420                          break;
1421  
1422                  }
1423              }
1424          }
1425  
1426          if (isset($info['audio'])) {
1427              $thisfile_audio['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1428              $thisfile_audio['dataformat']         = (!empty($thisfile_audio['dataformat'])        ? $thisfile_audio['dataformat']         : 'asf');
1429          }
1430          if (!empty($thisfile_video['dataformat'])) {
1431              $thisfile_video['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1432              $thisfile_video['pixel_aspect_ratio'] = (isset($thisfile_audio['pixel_aspect_ratio']) ? $thisfile_audio['pixel_aspect_ratio'] : (float) 1);
1433              $thisfile_video['dataformat']         = (!empty($thisfile_video['dataformat'])        ? $thisfile_video['dataformat']         : 'asf');
1434          }
1435          if (!empty($thisfile_video['streams'])) {
1436              $thisfile_video['streams']['resolution_x'] = 0;
1437              $thisfile_video['streams']['resolution_y'] = 0;
1438              foreach ($thisfile_video['streams'] as $key => $valuearray) {
1439                  if (($valuearray['resolution_x'] > $thisfile_video['streams']['resolution_x']) || ($valuearray['resolution_y'] > $thisfile_video['streams']['resolution_y'])) {
1440                      $thisfile_video['resolution_x'] = $valuearray['resolution_x'];
1441                      $thisfile_video['resolution_y'] = $valuearray['resolution_y'];
1442                  }
1443              }
1444          }
1445          $info['bitrate'] = (isset($thisfile_audio['bitrate']) ? $thisfile_audio['bitrate'] : 0) + (isset($thisfile_video['bitrate']) ? $thisfile_video['bitrate'] : 0);
1446  
1447          if ((!isset($info['playtime_seconds']) || ($info['playtime_seconds'] <= 0)) && ($info['bitrate'] > 0)) {
1448              $info['playtime_seconds'] = ($info['filesize'] - $info['avdataoffset']) / ($info['bitrate'] / 8);
1449          }
1450  
1451          return true;
1452      }
1453  
1454  	public static function ASFCodecListObjectTypeLookup($CodecListType) {
1455          static $ASFCodecListObjectTypeLookup = array();
1456          if (empty($ASFCodecListObjectTypeLookup)) {
1457              $ASFCodecListObjectTypeLookup[0x0001] = 'Video Codec';
1458              $ASFCodecListObjectTypeLookup[0x0002] = 'Audio Codec';
1459              $ASFCodecListObjectTypeLookup[0xFFFF] = 'Unknown Codec';
1460          }
1461  
1462          return (isset($ASFCodecListObjectTypeLookup[$CodecListType]) ? $ASFCodecListObjectTypeLookup[$CodecListType] : 'Invalid Codec Type');
1463      }
1464  
1465  	public static function KnownGUIDs() {
1466          static $GUIDarray = array(
1467              'GETID3_ASF_Extended_Stream_Properties_Object'   => '14E6A5CB-C672-4332-8399-A96952065B5A',
1468              'GETID3_ASF_Padding_Object'                      => '1806D474-CADF-4509-A4BA-9AABCB96AAE8',
1469              'GETID3_ASF_Payload_Ext_Syst_Pixel_Aspect_Ratio' => '1B1EE554-F9EA-4BC8-821A-376B74E4C4B8',
1470              'GETID3_ASF_Script_Command_Object'               => '1EFB1A30-0B62-11D0-A39B-00A0C90348F6',
1471              'GETID3_ASF_No_Error_Correction'                 => '20FB5700-5B55-11CF-A8FD-00805F5C442B',
1472              'GETID3_ASF_Content_Branding_Object'             => '2211B3FA-BD23-11D2-B4B7-00A0C955FC6E',
1473              'GETID3_ASF_Content_Encryption_Object'           => '2211B3FB-BD23-11D2-B4B7-00A0C955FC6E',
1474              'GETID3_ASF_Digital_Signature_Object'            => '2211B3FC-BD23-11D2-B4B7-00A0C955FC6E',
1475              'GETID3_ASF_Extended_Content_Encryption_Object'  => '298AE614-2622-4C17-B935-DAE07EE9289C',
1476              'GETID3_ASF_Simple_Index_Object'                 => '33000890-E5B1-11CF-89F4-00A0C90349CB',
1477              'GETID3_ASF_Degradable_JPEG_Media'               => '35907DE0-E415-11CF-A917-00805F5C442B',
1478              'GETID3_ASF_Payload_Extension_System_Timecode'   => '399595EC-8667-4E2D-8FDB-98814CE76C1E',
1479              'GETID3_ASF_Binary_Media'                        => '3AFB65E2-47EF-40F2-AC2C-70A90D71D343',
1480              'GETID3_ASF_Timecode_Index_Object'               => '3CB73FD0-0C4A-4803-953D-EDF7B6228F0C',
1481              'GETID3_ASF_Metadata_Library_Object'             => '44231C94-9498-49D1-A141-1D134E457054',
1482              'GETID3_ASF_Reserved_3'                          => '4B1ACBE3-100B-11D0-A39B-00A0C90348F6',
1483              'GETID3_ASF_Reserved_4'                          => '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB',
1484              'GETID3_ASF_Command_Media'                       => '59DACFC0-59E6-11D0-A3AC-00A0C90348F6',
1485              'GETID3_ASF_Header_Extension_Object'             => '5FBF03B5-A92E-11CF-8EE3-00C00C205365',
1486              'GETID3_ASF_Media_Object_Index_Parameters_Obj'   => '6B203BAD-3F11-4E84-ACA8-D7613DE2CFA7',
1487              'GETID3_ASF_Header_Object'                       => '75B22630-668E-11CF-A6D9-00AA0062CE6C',
1488              'GETID3_ASF_Content_Description_Object'          => '75B22633-668E-11CF-A6D9-00AA0062CE6C',
1489              'GETID3_ASF_Error_Correction_Object'             => '75B22635-668E-11CF-A6D9-00AA0062CE6C',
1490              'GETID3_ASF_Data_Object'                         => '75B22636-668E-11CF-A6D9-00AA0062CE6C',
1491              'GETID3_ASF_Web_Stream_Media_Subtype'            => '776257D4-C627-41CB-8F81-7AC7FF1C40CC',
1492              'GETID3_ASF_Stream_Bitrate_Properties_Object'    => '7BF875CE-468D-11D1-8D82-006097C9A2B2',
1493              'GETID3_ASF_Language_List_Object'                => '7C4346A9-EFE0-4BFC-B229-393EDE415C85',
1494              'GETID3_ASF_Codec_List_Object'                   => '86D15240-311D-11D0-A3A4-00A0C90348F6',
1495              'GETID3_ASF_Reserved_2'                          => '86D15241-311D-11D0-A3A4-00A0C90348F6',
1496              'GETID3_ASF_File_Properties_Object'              => '8CABDCA1-A947-11CF-8EE4-00C00C205365',
1497              'GETID3_ASF_File_Transfer_Media'                 => '91BD222C-F21C-497A-8B6D-5AA86BFC0185',
1498              'GETID3_ASF_Old_RTP_Extension_Data'              => '96800C63-4C94-11D1-837B-0080C7A37F95',
1499              'GETID3_ASF_Advanced_Mutual_Exclusion_Object'    => 'A08649CF-4775-4670-8A16-6E35357566CD',
1500              'GETID3_ASF_Bandwidth_Sharing_Object'            => 'A69609E6-517B-11D2-B6AF-00C04FD908E9',
1501              'GETID3_ASF_Reserved_1'                          => 'ABD3D211-A9BA-11cf-8EE6-00C00C205365',
1502              'GETID3_ASF_Bandwidth_Sharing_Exclusive'         => 'AF6060AA-5197-11D2-B6AF-00C04FD908E9',
1503              'GETID3_ASF_Bandwidth_Sharing_Partial'           => 'AF6060AB-5197-11D2-B6AF-00C04FD908E9',
1504              'GETID3_ASF_JFIF_Media'                          => 'B61BE100-5B4E-11CF-A8FD-00805F5C442B',
1505              'GETID3_ASF_Stream_Properties_Object'            => 'B7DC0791-A9B7-11CF-8EE6-00C00C205365',
1506              'GETID3_ASF_Video_Media'                         => 'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B',
1507              'GETID3_ASF_Audio_Spread'                        => 'BFC3CD50-618F-11CF-8BB2-00AA00B4E220',
1508              'GETID3_ASF_Metadata_Object'                     => 'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA',
1509              'GETID3_ASF_Payload_Ext_Syst_Sample_Duration'    => 'C6BD9450-867F-4907-83A3-C77921B733AD',
1510              'GETID3_ASF_Group_Mutual_Exclusion_Object'       => 'D1465A40-5A79-4338-B71B-E36B8FD6C249',
1511              'GETID3_ASF_Extended_Content_Description_Object' => 'D2D0A440-E307-11D2-97F0-00A0C95EA850',
1512              'GETID3_ASF_Stream_Prioritization_Object'        => 'D4FED15B-88D3-454F-81F0-ED5C45999E24',
1513              'GETID3_ASF_Payload_Ext_System_Content_Type'     => 'D590DC20-07BC-436C-9CF7-F3BBFBF1A4DC',
1514              'GETID3_ASF_Old_File_Properties_Object'          => 'D6E229D0-35DA-11D1-9034-00A0C90349BE',
1515              'GETID3_ASF_Old_ASF_Header_Object'               => 'D6E229D1-35DA-11D1-9034-00A0C90349BE',
1516              'GETID3_ASF_Old_ASF_Data_Object'                 => 'D6E229D2-35DA-11D1-9034-00A0C90349BE',
1517              'GETID3_ASF_Index_Object'                        => 'D6E229D3-35DA-11D1-9034-00A0C90349BE',
1518              'GETID3_ASF_Old_Stream_Properties_Object'        => 'D6E229D4-35DA-11D1-9034-00A0C90349BE',
1519              'GETID3_ASF_Old_Content_Description_Object'      => 'D6E229D5-35DA-11D1-9034-00A0C90349BE',
1520              'GETID3_ASF_Old_Script_Command_Object'           => 'D6E229D6-35DA-11D1-9034-00A0C90349BE',
1521              'GETID3_ASF_Old_Marker_Object'                   => 'D6E229D7-35DA-11D1-9034-00A0C90349BE',
1522              'GETID3_ASF_Old_Component_Download_Object'       => 'D6E229D8-35DA-11D1-9034-00A0C90349BE',
1523              'GETID3_ASF_Old_Stream_Group_Object'             => 'D6E229D9-35DA-11D1-9034-00A0C90349BE',
1524              'GETID3_ASF_Old_Scalable_Object'                 => 'D6E229DA-35DA-11D1-9034-00A0C90349BE',
1525              'GETID3_ASF_Old_Prioritization_Object'           => 'D6E229DB-35DA-11D1-9034-00A0C90349BE',
1526              'GETID3_ASF_Bitrate_Mutual_Exclusion_Object'     => 'D6E229DC-35DA-11D1-9034-00A0C90349BE',
1527              'GETID3_ASF_Old_Inter_Media_Dependency_Object'   => 'D6E229DD-35DA-11D1-9034-00A0C90349BE',
1528              'GETID3_ASF_Old_Rating_Object'                   => 'D6E229DE-35DA-11D1-9034-00A0C90349BE',
1529              'GETID3_ASF_Index_Parameters_Object'             => 'D6E229DF-35DA-11D1-9034-00A0C90349BE',
1530              'GETID3_ASF_Old_Color_Table_Object'              => 'D6E229E0-35DA-11D1-9034-00A0C90349BE',
1531              'GETID3_ASF_Old_Language_List_Object'            => 'D6E229E1-35DA-11D1-9034-00A0C90349BE',
1532              'GETID3_ASF_Old_Audio_Media'                     => 'D6E229E2-35DA-11D1-9034-00A0C90349BE',
1533              'GETID3_ASF_Old_Video_Media'                     => 'D6E229E3-35DA-11D1-9034-00A0C90349BE',
1534              'GETID3_ASF_Old_Image_Media'                     => 'D6E229E4-35DA-11D1-9034-00A0C90349BE',
1535              'GETID3_ASF_Old_Timecode_Media'                  => 'D6E229E5-35DA-11D1-9034-00A0C90349BE',
1536              'GETID3_ASF_Old_Text_Media'                      => 'D6E229E6-35DA-11D1-9034-00A0C90349BE',
1537              'GETID3_ASF_Old_MIDI_Media'                      => 'D6E229E7-35DA-11D1-9034-00A0C90349BE',
1538              'GETID3_ASF_Old_Command_Media'                   => 'D6E229E8-35DA-11D1-9034-00A0C90349BE',
1539              'GETID3_ASF_Old_No_Error_Concealment'            => 'D6E229EA-35DA-11D1-9034-00A0C90349BE',
1540              'GETID3_ASF_Old_Scrambled_Audio'                 => 'D6E229EB-35DA-11D1-9034-00A0C90349BE',
1541              'GETID3_ASF_Old_No_Color_Table'                  => 'D6E229EC-35DA-11D1-9034-00A0C90349BE',
1542              'GETID3_ASF_Old_SMPTE_Time'                      => 'D6E229ED-35DA-11D1-9034-00A0C90349BE',
1543              'GETID3_ASF_Old_ASCII_Text'                      => 'D6E229EE-35DA-11D1-9034-00A0C90349BE',
1544              'GETID3_ASF_Old_Unicode_Text'                    => 'D6E229EF-35DA-11D1-9034-00A0C90349BE',
1545              'GETID3_ASF_Old_HTML_Text'                       => 'D6E229F0-35DA-11D1-9034-00A0C90349BE',
1546              'GETID3_ASF_Old_URL_Command'                     => 'D6E229F1-35DA-11D1-9034-00A0C90349BE',
1547              'GETID3_ASF_Old_Filename_Command'                => 'D6E229F2-35DA-11D1-9034-00A0C90349BE',
1548              'GETID3_ASF_Old_ACM_Codec'                       => 'D6E229F3-35DA-11D1-9034-00A0C90349BE',
1549              'GETID3_ASF_Old_VCM_Codec'                       => 'D6E229F4-35DA-11D1-9034-00A0C90349BE',
1550              'GETID3_ASF_Old_QuickTime_Codec'                 => 'D6E229F5-35DA-11D1-9034-00A0C90349BE',
1551              'GETID3_ASF_Old_DirectShow_Transform_Filter'     => 'D6E229F6-35DA-11D1-9034-00A0C90349BE',
1552              'GETID3_ASF_Old_DirectShow_Rendering_Filter'     => 'D6E229F7-35DA-11D1-9034-00A0C90349BE',
1553              'GETID3_ASF_Old_No_Enhancement'                  => 'D6E229F8-35DA-11D1-9034-00A0C90349BE',
1554              'GETID3_ASF_Old_Unknown_Enhancement_Type'        => 'D6E229F9-35DA-11D1-9034-00A0C90349BE',
1555              'GETID3_ASF_Old_Temporal_Enhancement'            => 'D6E229FA-35DA-11D1-9034-00A0C90349BE',
1556              'GETID3_ASF_Old_Spatial_Enhancement'             => 'D6E229FB-35DA-11D1-9034-00A0C90349BE',
1557              'GETID3_ASF_Old_Quality_Enhancement'             => 'D6E229FC-35DA-11D1-9034-00A0C90349BE',
1558              'GETID3_ASF_Old_Number_of_Channels_Enhancement'  => 'D6E229FD-35DA-11D1-9034-00A0C90349BE',
1559              'GETID3_ASF_Old_Frequency_Response_Enhancement'  => 'D6E229FE-35DA-11D1-9034-00A0C90349BE',
1560              'GETID3_ASF_Old_Media_Object'                    => 'D6E229FF-35DA-11D1-9034-00A0C90349BE',
1561              'GETID3_ASF_Mutex_Language'                      => 'D6E22A00-35DA-11D1-9034-00A0C90349BE',
1562              'GETID3_ASF_Mutex_Bitrate'                       => 'D6E22A01-35DA-11D1-9034-00A0C90349BE',
1563              'GETID3_ASF_Mutex_Unknown'                       => 'D6E22A02-35DA-11D1-9034-00A0C90349BE',
1564              'GETID3_ASF_Old_ASF_Placeholder_Object'          => 'D6E22A0E-35DA-11D1-9034-00A0C90349BE',
1565              'GETID3_ASF_Old_Data_Unit_Extension_Object'      => 'D6E22A0F-35DA-11D1-9034-00A0C90349BE',
1566              'GETID3_ASF_Web_Stream_Format'                   => 'DA1E6B13-8359-4050-B398-388E965BF00C',
1567              'GETID3_ASF_Payload_Ext_System_File_Name'        => 'E165EC0E-19ED-45D7-B4A7-25CBD1E28E9B',
1568              'GETID3_ASF_Marker_Object'                       => 'F487CD01-A951-11CF-8EE6-00C00C205365',
1569              'GETID3_ASF_Timecode_Index_Parameters_Object'    => 'F55E496D-9797-4B5D-8C8B-604DFE9BFB24',
1570              'GETID3_ASF_Audio_Media'                         => 'F8699E40-5B4D-11CF-A8FD-00805F5C442B',
1571              'GETID3_ASF_Media_Object_Index_Object'           => 'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C',
1572              'GETID3_ASF_Alt_Extended_Content_Encryption_Obj' => 'FF889EF1-ADEE-40DA-9E71-98704BB928CE',
1573              'GETID3_ASF_Index_Placeholder_Object'            => 'D9AADE20-7C17-4F9C-BC28-8555DD98E2A2', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1574              'GETID3_ASF_Compatibility_Object'                => '26F18B5D-4584-47EC-9F5F-0E651F0452C9', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1575          );
1576          return $GUIDarray;
1577      }
1578  
1579  	public static function GUIDname($GUIDstring) {
1580          static $GUIDarray = array();
1581          if (empty($GUIDarray)) {
1582              $GUIDarray = self::KnownGUIDs();
1583          }
1584          return array_search($GUIDstring, $GUIDarray);
1585      }
1586  
1587  	public static function ASFIndexObjectIndexTypeLookup($id) {
1588          static $ASFIndexObjectIndexTypeLookup = array();
1589          if (empty($ASFIndexObjectIndexTypeLookup)) {
1590              $ASFIndexObjectIndexTypeLookup[1] = 'Nearest Past Data Packet';
1591              $ASFIndexObjectIndexTypeLookup[2] = 'Nearest Past Media Object';
1592              $ASFIndexObjectIndexTypeLookup[3] = 'Nearest Past Cleanpoint';
1593          }
1594          return (isset($ASFIndexObjectIndexTypeLookup[$id]) ? $ASFIndexObjectIndexTypeLookup[$id] : 'invalid');
1595      }
1596  
1597  	public static function GUIDtoBytestring($GUIDstring) {
1598          // Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way:
1599          // first 4 bytes are in little-endian order
1600          // next 2 bytes are appended in little-endian order
1601          // next 2 bytes are appended in little-endian order
1602          // next 2 bytes are appended in big-endian order
1603          // next 6 bytes are appended in big-endian order
1604  
1605          // AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string:
1606          // $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp
1607  
1608          $hexbytecharstring  = chr(hexdec(substr($GUIDstring,  6, 2)));
1609          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  4, 2)));
1610          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  2, 2)));
1611          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  0, 2)));
1612  
1613          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 11, 2)));
1614          $hexbytecharstring .= chr(hexdec(substr($GUIDstring,  9, 2)));
1615  
1616          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 16, 2)));
1617          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 14, 2)));
1618  
1619          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 19, 2)));
1620          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 21, 2)));
1621  
1622          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 24, 2)));
1623          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 26, 2)));
1624          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 28, 2)));
1625          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 30, 2)));
1626          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 32, 2)));
1627          $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 34, 2)));
1628  
1629          return $hexbytecharstring;
1630      }
1631  
1632  	public static function BytestringToGUID($Bytestring) {
1633          $GUIDstring  = str_pad(dechex(ord($Bytestring{3})),  2, '0', STR_PAD_LEFT);
1634          $GUIDstring .= str_pad(dechex(ord($Bytestring{2})),  2, '0', STR_PAD_LEFT);
1635          $GUIDstring .= str_pad(dechex(ord($Bytestring{1})),  2, '0', STR_PAD_LEFT);
1636          $GUIDstring .= str_pad(dechex(ord($Bytestring{0})),  2, '0', STR_PAD_LEFT);
1637          $GUIDstring .= '-';
1638          $GUIDstring .= str_pad(dechex(ord($Bytestring{5})),  2, '0', STR_PAD_LEFT);
1639          $GUIDstring .= str_pad(dechex(ord($Bytestring{4})),  2, '0', STR_PAD_LEFT);
1640          $GUIDstring .= '-';
1641          $GUIDstring .= str_pad(dechex(ord($Bytestring{7})),  2, '0', STR_PAD_LEFT);
1642          $GUIDstring .= str_pad(dechex(ord($Bytestring{6})),  2, '0', STR_PAD_LEFT);
1643          $GUIDstring .= '-';
1644          $GUIDstring .= str_pad(dechex(ord($Bytestring{8})),  2, '0', STR_PAD_LEFT);
1645          $GUIDstring .= str_pad(dechex(ord($Bytestring{9})),  2, '0', STR_PAD_LEFT);
1646          $GUIDstring .= '-';
1647          $GUIDstring .= str_pad(dechex(ord($Bytestring{10})), 2, '0', STR_PAD_LEFT);
1648          $GUIDstring .= str_pad(dechex(ord($Bytestring{11})), 2, '0', STR_PAD_LEFT);
1649          $GUIDstring .= str_pad(dechex(ord($Bytestring{12})), 2, '0', STR_PAD_LEFT);
1650          $GUIDstring .= str_pad(dechex(ord($Bytestring{13})), 2, '0', STR_PAD_LEFT);
1651          $GUIDstring .= str_pad(dechex(ord($Bytestring{14})), 2, '0', STR_PAD_LEFT);
1652          $GUIDstring .= str_pad(dechex(ord($Bytestring{15})), 2, '0', STR_PAD_LEFT);
1653  
1654          return strtoupper($GUIDstring);
1655      }
1656  
1657  	public static function FILETIMEtoUNIXtime($FILETIME, $round=true) {
1658          // FILETIME is a 64-bit unsigned integer representing
1659          // the number of 100-nanosecond intervals since January 1, 1601
1660          // UNIX timestamp is number of seconds since January 1, 1970
1661          // 116444736000000000 = 10000000 * 60 * 60 * 24 * 365 * 369 + 89 leap days
1662          if ($round) {
1663              return intval(round(($FILETIME - 116444736000000000) / 10000000));
1664          }
1665          return ($FILETIME - 116444736000000000) / 10000000;
1666      }
1667  
1668  	public static function WMpictureTypeLookup($WMpictureType) {
1669          static $WMpictureTypeLookup = array();
1670          if (empty($WMpictureTypeLookup)) {
1671              $WMpictureTypeLookup[0x03] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Front Cover');
1672              $WMpictureTypeLookup[0x04] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Back Cover');
1673              $WMpictureTypeLookup[0x00] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'User Defined');
1674              $WMpictureTypeLookup[0x05] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Leaflet Page');
1675              $WMpictureTypeLookup[0x06] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Media Label');
1676              $WMpictureTypeLookup[0x07] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Lead Artist');
1677              $WMpictureTypeLookup[0x08] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Artist');
1678              $WMpictureTypeLookup[0x09] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Conductor');
1679              $WMpictureTypeLookup[0x0A] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Band');
1680              $WMpictureTypeLookup[0x0B] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Composer');
1681              $WMpictureTypeLookup[0x0C] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Lyricist');
1682              $WMpictureTypeLookup[0x0D] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Recording Location');
1683              $WMpictureTypeLookup[0x0E] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'During Recording');
1684              $WMpictureTypeLookup[0x0F] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'During Performance');
1685              $WMpictureTypeLookup[0x10] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Video Screen Capture');
1686              $WMpictureTypeLookup[0x12] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Illustration');
1687              $WMpictureTypeLookup[0x13] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Band Logotype');
1688              $WMpictureTypeLookup[0x14] = getid3_lib::iconv_fallback('ISO-8859-1', 'UTF-16LE', 'Publisher Logotype');
1689          }
1690          return (isset($WMpictureTypeLookup[$WMpictureType]) ? $WMpictureTypeLookup[$WMpictureType] : '');
1691      }
1692  
1693  	public function ASF_HeaderExtensionObjectDataParse(&$asf_header_extension_object_data, &$unhandled_sections) {
1694          // http://msdn.microsoft.com/en-us/library/bb643323.aspx
1695  
1696          $offset = 0;
1697          $objectOffset = 0;
1698          $HeaderExtensionObjectParsed = array();
1699          while ($objectOffset < strlen($asf_header_extension_object_data)) {
1700              $offset = $objectOffset;
1701              $thisObject = array();
1702  
1703              $thisObject['guid']                              =                              substr($asf_header_extension_object_data, $offset, 16);
1704              $offset += 16;
1705              $thisObject['guid_text'] = $this->BytestringToGUID($thisObject['guid']);
1706              $thisObject['guid_name'] = $this->GUIDname($thisObject['guid_text']);
1707  
1708              $thisObject['size']                              = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1709              $offset += 8;
1710              if ($thisObject['size'] <= 0) {
1711                  break;
1712              }
1713  
1714              switch ($thisObject['guid']) {
1715                  case GETID3_ASF_Extended_Stream_Properties_Object:
1716                      $thisObject['start_time']                        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1717                      $offset += 8;
1718                      $thisObject['start_time_unix']                   = $this->FILETIMEtoUNIXtime($thisObject['start_time']);
1719  
1720                      $thisObject['end_time']                          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1721                      $offset += 8;
1722                      $thisObject['end_time_unix']                     = $this->FILETIMEtoUNIXtime($thisObject['end_time']);
1723  
1724                      $thisObject['data_bitrate']                      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1725                      $offset += 4;
1726  
1727                      $thisObject['buffer_size']                       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1728                      $offset += 4;
1729  
1730                      $thisObject['initial_buffer_fullness']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1731                      $offset += 4;
1732  
1733                      $thisObject['alternate_data_bitrate']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1734                      $offset += 4;
1735  
1736                      $thisObject['alternate_buffer_size']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1737                      $offset += 4;
1738  
1739                      $thisObject['alternate_initial_buffer_fullness'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1740                      $offset += 4;
1741  
1742                      $thisObject['maximum_object_size']               = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1743                      $offset += 4;
1744  
1745                      $thisObject['flags_raw']                         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1746                      $offset += 4;
1747                      $thisObject['flags']['reliable']                = (bool) $thisObject['flags_raw'] & 0x00000001;
1748                      $thisObject['flags']['seekable']                = (bool) $thisObject['flags_raw'] & 0x00000002;
1749                      $thisObject['flags']['no_cleanpoints']          = (bool) $thisObject['flags_raw'] & 0x00000004;
1750                      $thisObject['flags']['resend_live_cleanpoints'] = (bool) $thisObject['flags_raw'] & 0x00000008;
1751  
1752                      $thisObject['stream_number']                     = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1753                      $offset += 2;
1754  
1755                      $thisObject['stream_language_id_index']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1756                      $offset += 2;
1757  
1758                      $thisObject['average_time_per_frame']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1759                      $offset += 4;
1760  
1761                      $thisObject['stream_name_count']                 = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1762                      $offset += 2;
1763  
1764                      $thisObject['payload_extension_system_count']    = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1765                      $offset += 2;
1766  
1767                      for ($i = 0; $i < $thisObject['stream_name_count']; $i++) {
1768                          $streamName = array();
1769  
1770                          $streamName['language_id_index']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1771                          $offset += 2;
1772  
1773                          $streamName['stream_name_length']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1774                          $offset += 2;
1775  
1776                          $streamName['stream_name']                   = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $streamName['stream_name_length']));
1777                          $offset += $streamName['stream_name_length'];
1778  
1779                          $thisObject['stream_names'][$i] = $streamName;
1780                      }
1781  
1782                      for ($i = 0; $i < $thisObject['payload_extension_system_count']; $i++) {
1783                          $payloadExtensionSystem = array();
1784  
1785                          $payloadExtensionSystem['extension_system_id']   =                              substr($asf_header_extension_object_data, $offset, 16);
1786                          $offset += 16;
1787                          $payloadExtensionSystem['extension_system_id_text'] = $this->BytestringToGUID($payloadExtensionSystem['extension_system_id']);
1788  
1789                          $payloadExtensionSystem['extension_system_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1790                          $offset += 2;
1791                          if ($payloadExtensionSystem['extension_system_size'] <= 0) {
1792                              break 2;
1793                          }
1794  
1795                          $payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1796                          $offset += 4;
1797  
1798                          $payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $payloadExtensionSystem['extension_system_info_length']));
1799                          $offset += $payloadExtensionSystem['extension_system_info_length'];
1800  
1801                          $thisObject['payload_extension_systems'][$i] = $payloadExtensionSystem;
1802                      }
1803  
1804                      break;
1805  
1806                  case GETID3_ASF_Padding_Object:
1807                      // padding, skip it
1808                      break;
1809  
1810                  case GETID3_ASF_Metadata_Object:
1811                      $thisObject['description_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1812                      $offset += 2;
1813  
1814                      for ($i = 0; $i < $thisObject['description_record_counts']; $i++) {
1815                          $descriptionRecord = array();
1816  
1817                          $descriptionRecord['reserved_1']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2)); // must be zero
1818                          $offset += 2;
1819  
1820                          $descriptionRecord['stream_number']      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1821                          $offset += 2;
1822  
1823                          $descriptionRecord['name_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1824                          $offset += 2;
1825  
1826                          $descriptionRecord['data_type']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1827                          $offset += 2;
1828                          $descriptionRecord['data_type_text'] = $this->ASFmetadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1829  
1830                          $descriptionRecord['data_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1831                          $offset += 4;
1832  
1833                          $descriptionRecord['name']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1834                          $offset += $descriptionRecord['name_length'];
1835  
1836                          $descriptionRecord['data']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1837                          $offset += $descriptionRecord['data_length'];
1838                          switch ($descriptionRecord['data_type']) {
1839                              case 0x0000: // Unicode string
1840                                  break;
1841  
1842                              case 0x0001: // BYTE array
1843                                  // do nothing
1844                                  break;
1845  
1846                              case 0x0002: // BOOL
1847                                  $descriptionRecord['data'] = (bool) getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1848                                  break;
1849  
1850                              case 0x0003: // DWORD
1851                              case 0x0004: // QWORD
1852                              case 0x0005: // WORD
1853                                  $descriptionRecord['data'] = getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1854                                  break;
1855  
1856                              case 0x0006: // GUID
1857                                  $descriptionRecord['data_text'] = $this->BytestringToGUID($descriptionRecord['data']);
1858                                  break;
1859                          }
1860  
1861                          $thisObject['description_record'][$i] = $descriptionRecord;
1862                      }
1863                      break;
1864  
1865                  case GETID3_ASF_Language_List_Object:
1866                      $thisObject['language_id_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1867                      $offset += 2;
1868  
1869                      for ($i = 0; $i < $thisObject['language_id_record_counts']; $i++) {
1870                          $languageIDrecord = array();
1871  
1872                          $languageIDrecord['language_id_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  1));
1873                          $offset += 1;
1874  
1875                          $languageIDrecord['language_id']                =                              substr($asf_header_extension_object_data, $offset,  $languageIDrecord['language_id_length']);
1876                          $offset += $languageIDrecord['language_id_length'];
1877  
1878                          $thisObject['language_id_record'][$i] = $languageIDrecord;
1879                      }
1880                      break;
1881  
1882                  case GETID3_ASF_Metadata_Library_Object:
1883                      $thisObject['description_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1884                      $offset += 2;
1885  
1886                      for ($i = 0; $i < $thisObject['description_records_count']; $i++) {
1887                          $descriptionRecord = array();
1888  
1889                          $descriptionRecord['language_list_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1890                          $offset += 2;
1891  
1892                          $descriptionRecord['stream_number']       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1893                          $offset += 2;
1894  
1895                          $descriptionRecord['name_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1896                          $offset += 2;
1897  
1898                          $descriptionRecord['data_type']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1899                          $offset += 2;
1900                          $descriptionRecord['data_type_text'] = $this->ASFmetadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1901  
1902                          $descriptionRecord['data_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1903                          $offset += 4;
1904  
1905                          $descriptionRecord['name']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1906                          $offset += $descriptionRecord['name_length'];
1907  
1908                          $descriptionRecord['data']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1909                          $offset += $descriptionRecord['data_length'];
1910  
1911                          if (preg_match('#^WM/Picture$#', str_replace("\x00", '', trim($descriptionRecord['name'])))) {
1912                              $WMpicture = $this->ASF_WMpicture($descriptionRecord['data']);
1913                              foreach ($WMpicture as $key => $value) {
1914                                  $descriptionRecord['data'] = $WMpicture;
1915                              }
1916                              unset($WMpicture);
1917                          }
1918  
1919                          $thisObject['description_record'][$i] = $descriptionRecord;
1920                      }
1921                      break;
1922  
1923                  default:
1924                      $unhandled_sections++;
1925                      if ($this->GUIDname($thisObject['guid_text'])) {
1926                          $this->getid3->info['warning'][] = 'unhandled Header Extension Object GUID "'.$this->GUIDname($thisObject['guid_text']).'" {'.$thisObject['guid_text'].'} at offset '.($offset - 16 - 8);
1927                      } else {
1928                          $this->getid3->info['warning'][] = 'unknown Header Extension Object GUID {'.$thisObject['guid_text'].'} in at offset '.($offset - 16 - 8);
1929                      }
1930                      break;
1931              }
1932              $HeaderExtensionObjectParsed[] = $thisObject;
1933  
1934              $objectOffset += $thisObject['size'];
1935          }
1936          return $HeaderExtensionObjectParsed;
1937      }
1938  
1939  
1940  	public static function ASFmetadataLibraryObjectDataTypeLookup($id) {
1941          static $ASFmetadataLibraryObjectDataTypeLookup = array(
1942              0x0000 => 'Unicode string', // The data consists of a sequence of Unicode characters
1943              0x0001 => 'BYTE array',     // The type of the data is implementation-specific
1944              0x0002 => 'BOOL',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer. Only 0x0000 or 0x0001 are permitted values
1945              0x0003 => 'DWORD',          // The data is 4 bytes long and should be interpreted as a 32-bit unsigned integer
1946              0x0004 => 'QWORD',          // The data is 8 bytes long and should be interpreted as a 64-bit unsigned integer
1947              0x0005 => 'WORD',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer
1948              0x0006 => 'GUID',           // The data is 16 bytes long and should be interpreted as a 128-bit GUID
1949          );
1950          return (isset($ASFmetadataLibraryObjectDataTypeLookup[$id]) ? $ASFmetadataLibraryObjectDataTypeLookup[$id] : 'invalid');
1951      }
1952  
1953  	public function ASF_WMpicture(&$data) {
1954          //typedef struct _WMPicture{
1955          //  LPWSTR  pwszMIMEType;
1956          //  BYTE  bPictureType;
1957          //  LPWSTR  pwszDescription;
1958          //  DWORD  dwDataLen;
1959          //  BYTE*  pbData;
1960          //} WM_PICTURE;
1961  
1962          $WMpicture = array();
1963  
1964          $offset = 0;
1965          $WMpicture['image_type_id'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 1));
1966          $offset += 1;
1967          $WMpicture['image_type']    = $this->WMpictureTypeLookup($WMpicture['image_type_id']);
1968          $WMpicture['image_size']    = getid3_lib::LittleEndian2Int(substr($data, $offset, 4));
1969          $offset += 4;
1970  
1971          $WMpicture['image_mime'] = '';
1972          do {
1973              $next_byte_pair = substr($data, $offset, 2);
1974              $offset += 2;
1975              $WMpicture['image_mime'] .= $next_byte_pair;
1976          } while ($next_byte_pair !== "\x00\x00");
1977  
1978          $WMpicture['image_description'] = '';
1979          do {
1980              $next_byte_pair = substr($data, $offset, 2);
1981              $offset += 2;
1982              $WMpicture['image_description'] .= $next_byte_pair;
1983          } while ($next_byte_pair !== "\x00\x00");
1984  
1985          $WMpicture['dataoffset'] = $offset;
1986          $WMpicture['data'] = substr($data, $offset);
1987  
1988          $imageinfo = array();
1989          $WMpicture['image_mime'] = '';
1990          $imagechunkcheck = getid3_lib::GetDataImageSize($WMpicture['data'], $imageinfo);
1991          unset($imageinfo);
1992          if (!empty($imagechunkcheck)) {
1993              $WMpicture['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
1994          }
1995          if (!isset($this->getid3->info['asf']['comments']['picture'])) {
1996              $this->getid3->info['asf']['comments']['picture'] = array();
1997          }
1998          $this->getid3->info['asf']['comments']['picture'][] = array('data'=>$WMpicture['data'], 'image_mime'=>$WMpicture['image_mime']);
1999  
2000          return $WMpicture;
2001      }
2002  
2003  
2004      // Remove terminator 00 00 and convert UTF-16LE to Latin-1
2005  	public static function TrimConvert($string) {
2006          return trim(getid3_lib::iconv_fallback('UTF-16LE', 'ISO-8859-1', self::TrimTerm($string)), ' ');
2007      }
2008  
2009  
2010      // Remove terminator 00 00
2011  	public static function TrimTerm($string) {
2012          // remove terminator, only if present (it should be, but...)
2013          if (substr($string, -2) === "\x00\x00") {
2014              $string = substr($string, 0, -2);
2015          }
2016          return $string;
2017      }
2018  
2019  }


Generated: Tue Mar 25 01:41:18 2014 WordPress honlapkészítés: online1.hu