wp-includes/ID3/module.audio-video.asf.php

   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 }