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