1<?php
2/////////////////////////////////////////////////////////////////
3/// getID3() by James Heinrich <info@getid3.org>               //
4//  available at https://github.com/JamesHeinrich/getID3       //
5//            or https://www.getid3.org                        //
6//            or http://getid3.sourceforge.net                 //
7//  see readme.txt for more details                            //
8/////////////////////////////////////////////////////////////////
9//                                                             //
10// module.audio-video.asf.php                                  //
11// module for analyzing ASF, WMA and WMV files                 //
12// dependencies: module.audio-video.riff.php                   //
13//                                                            ///
14/////////////////////////////////////////////////////////////////
15
16if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
17	exit;
18}
19getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);
20
21class getid3_asf extends getid3_handler
22{
23	/**
24	 * @param getID3 $getid3
25	 */
26	public function __construct(getID3 $getid3) {
27		parent::__construct($getid3);  // extends getid3_handler::__construct()
28
29		// initialize all GUID constants
30		$GUIDarray = $this->KnownGUIDs();
31		foreach ($GUIDarray as $GUIDname => $hexstringvalue) {
32			if (!defined($GUIDname)) {
33				define($GUIDname, $this->GUIDtoBytestring($hexstringvalue));
34			}
35		}
36	}
37
38	/**
39	 * @return bool
40	 */
41	public function Analyze() {
42		$info = &$this->getid3->info;
43
44		// Shortcuts
45		$thisfile_audio = &$info['audio'];
46		$thisfile_video = &$info['video'];
47		$info['asf']  = array();
48		$thisfile_asf = &$info['asf'];
49		$thisfile_asf['comments'] = array();
50		$thisfile_asf_comments    = &$thisfile_asf['comments'];
51		$thisfile_asf['header_object'] = array();
52		$thisfile_asf_headerobject     = &$thisfile_asf['header_object'];
53
54
55		// ASF structure:
56		// * Header Object [required]
57		//   * File Properties Object [required]   (global file attributes)
58		//   * Stream Properties Object [required] (defines media stream & characteristics)
59		//   * Header Extension Object [required]  (additional functionality)
60		//   * Content Description Object          (bibliographic information)
61		//   * Script Command Object               (commands for during playback)
62		//   * Marker Object                       (named jumped points within the file)
63		// * Data Object [required]
64		//   * Data Packets
65		// * Index Object
66
67		// Header Object: (mandatory, one only)
68		// Field Name                   Field Type   Size (bits)
69		// Object ID                    GUID         128             // GUID for header object - GETID3_ASF_Header_Object
70		// Object Size                  QWORD        64              // size of header object, including 30 bytes of Header Object header
71		// Number of Header Objects     DWORD        32              // number of objects in header object
72		// Reserved1                    BYTE         8               // hardcoded: 0x01
73		// Reserved2                    BYTE         8               // hardcoded: 0x02
74
75		$info['fileformat'] = 'asf';
76
77		$this->fseek($info['avdataoffset']);
78		$HeaderObjectData = $this->fread(30);
79
80		$thisfile_asf_headerobject['objectid']      = substr($HeaderObjectData, 0, 16);
81		$thisfile_asf_headerobject['objectid_guid'] = $this->BytestringToGUID($thisfile_asf_headerobject['objectid']);
82		if ($thisfile_asf_headerobject['objectid'] != GETID3_ASF_Header_Object) {
83			unset($info['fileformat'], $info['asf']);
84			return $this->error('ASF header GUID {'.$this->BytestringToGUID($thisfile_asf_headerobject['objectid']).'} does not match expected "GETID3_ASF_Header_Object" GUID {'.$this->BytestringToGUID(GETID3_ASF_Header_Object).'}');
85		}
86		$thisfile_asf_headerobject['objectsize']    = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 16, 8));
87		$thisfile_asf_headerobject['headerobjects'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 24, 4));
88		$thisfile_asf_headerobject['reserved1']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 28, 1));
89		$thisfile_asf_headerobject['reserved2']     = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 29, 1));
90
91		$NextObjectOffset = $this->ftell();
92		$ASFHeaderData = $this->fread($thisfile_asf_headerobject['objectsize'] - 30);
93		$offset = 0;
94		$thisfile_asf_streambitratepropertiesobject = array();
95		$thisfile_asf_codeclistobject = array();
96
97		for ($HeaderObjectsCounter = 0; $HeaderObjectsCounter < $thisfile_asf_headerobject['headerobjects']; $HeaderObjectsCounter++) {
98			$NextObjectGUID = substr($ASFHeaderData, $offset, 16);
99			$offset += 16;
100			$NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
101			$NextObjectSize = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
102			$offset += 8;
103			switch ($NextObjectGUID) {
104
105				case GETID3_ASF_File_Properties_Object:
106					// File Properties Object: (mandatory, one only)
107					// Field Name                   Field Type   Size (bits)
108					// Object ID                    GUID         128             // GUID for file properties object - GETID3_ASF_File_Properties_Object
109					// Object Size                  QWORD        64              // size of file properties object, including 104 bytes of File Properties Object header
110					// File ID                      GUID         128             // unique ID - identical to File ID in Data Object
111					// File Size                    QWORD        64              // entire file in bytes. Invalid if Broadcast Flag == 1
112					// Creation Date                QWORD        64              // date & time of file creation. Maybe invalid if Broadcast Flag == 1
113					// Data Packets Count           QWORD        64              // number of data packets in Data Object. Invalid if Broadcast Flag == 1
114					// Play Duration                QWORD        64              // playtime, in 100-nanosecond units. Invalid if Broadcast Flag == 1
115					// Send Duration                QWORD        64              // time needed to send file, in 100-nanosecond units. Players can ignore this value. Invalid if Broadcast Flag == 1
116					// Preroll                      QWORD        64              // time to buffer data before starting to play file, in 1-millisecond units. If <> 0, PlayDuration and PresentationTime have been offset by this amount
117					// Flags                        DWORD        32              //
118					// * Broadcast Flag             bits         1  (0x01)       // file is currently being written, some header values are invalid
119					// * Seekable Flag              bits         1  (0x02)       // is file seekable
120					// * Reserved                   bits         30 (0xFFFFFFFC) // reserved - set to zero
121					// Minimum Data Packet Size     DWORD        32              // in bytes. should be same as Maximum Data Packet Size. Invalid if Broadcast Flag == 1
122					// Maximum Data Packet Size     DWORD        32              // in bytes. should be same as Minimum Data Packet Size. Invalid if Broadcast Flag == 1
123					// Maximum Bitrate              DWORD        32              // maximum instantaneous bitrate in bits per second for entire file, including all data streams and ASF overhead
124
125					// shortcut
126					$thisfile_asf['file_properties_object'] = array();
127					$thisfile_asf_filepropertiesobject      = &$thisfile_asf['file_properties_object'];
128
129					$thisfile_asf_filepropertiesobject['offset']             = $NextObjectOffset + $offset;
130					$thisfile_asf_filepropertiesobject['objectid']           = $NextObjectGUID;
131					$thisfile_asf_filepropertiesobject['objectid_guid']      = $NextObjectGUIDtext;
132					$thisfile_asf_filepropertiesobject['objectsize']         = $NextObjectSize;
133					$thisfile_asf_filepropertiesobject['fileid']             = substr($ASFHeaderData, $offset, 16);
134					$offset += 16;
135					$thisfile_asf_filepropertiesobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_filepropertiesobject['fileid']);
136					$thisfile_asf_filepropertiesobject['filesize']           = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
137					$offset += 8;
138					$thisfile_asf_filepropertiesobject['creation_date']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
139					$thisfile_asf_filepropertiesobject['creation_date_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_filepropertiesobject['creation_date']);
140					$offset += 8;
141					$thisfile_asf_filepropertiesobject['data_packets']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
142					$offset += 8;
143					$thisfile_asf_filepropertiesobject['play_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
144					$offset += 8;
145					$thisfile_asf_filepropertiesobject['send_duration']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
146					$offset += 8;
147					$thisfile_asf_filepropertiesobject['preroll']            = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
148					$offset += 8;
149					$thisfile_asf_filepropertiesobject['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
150					$offset += 4;
151					$thisfile_asf_filepropertiesobject['flags']['broadcast'] = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0001);
152					$thisfile_asf_filepropertiesobject['flags']['seekable']  = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0002);
153
154					$thisfile_asf_filepropertiesobject['min_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
155					$offset += 4;
156					$thisfile_asf_filepropertiesobject['max_packet_size']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
157					$offset += 4;
158					$thisfile_asf_filepropertiesobject['max_bitrate']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
159					$offset += 4;
160
161					if ($thisfile_asf_filepropertiesobject['flags']['broadcast']) {
162
163						// broadcast flag is set, some values invalid
164						unset($thisfile_asf_filepropertiesobject['filesize']);
165						unset($thisfile_asf_filepropertiesobject['data_packets']);
166						unset($thisfile_asf_filepropertiesobject['play_duration']);
167						unset($thisfile_asf_filepropertiesobject['send_duration']);
168						unset($thisfile_asf_filepropertiesobject['min_packet_size']);
169						unset($thisfile_asf_filepropertiesobject['max_packet_size']);
170
171					} else {
172
173						// broadcast flag NOT set, perform calculations
174						$info['playtime_seconds'] = ($thisfile_asf_filepropertiesobject['play_duration'] / 10000000) - ($thisfile_asf_filepropertiesobject['preroll'] / 1000);
175
176						//$info['bitrate'] = $thisfile_asf_filepropertiesobject['max_bitrate'];
177						$info['bitrate'] = ((isset($thisfile_asf_filepropertiesobject['filesize']) ? $thisfile_asf_filepropertiesobject['filesize'] : $info['filesize']) * 8) / $info['playtime_seconds'];
178					}
179					break;
180
181				case GETID3_ASF_Stream_Properties_Object:
182					// Stream Properties Object: (mandatory, one per media stream)
183					// Field Name                   Field Type   Size (bits)
184					// Object ID                    GUID         128             // GUID for stream properties object - GETID3_ASF_Stream_Properties_Object
185					// Object Size                  QWORD        64              // size of stream properties object, including 78 bytes of Stream Properties Object header
186					// Stream Type                  GUID         128             // GETID3_ASF_Audio_Media, GETID3_ASF_Video_Media or GETID3_ASF_Command_Media
187					// Error Correction Type        GUID         128             // GETID3_ASF_Audio_Spread for audio-only streams, GETID3_ASF_No_Error_Correction for other stream types
188					// Time Offset                  QWORD        64              // 100-nanosecond units. typically zero. added to all timestamps of samples in the stream
189					// Type-Specific Data Length    DWORD        32              // number of bytes for Type-Specific Data field
190					// Error Correction Data Length DWORD        32              // number of bytes for Error Correction Data field
191					// Flags                        WORD         16              //
192					// * Stream Number              bits         7 (0x007F)      // number of this stream.  1 <= valid <= 127
193					// * Reserved                   bits         8 (0x7F80)      // reserved - set to zero
194					// * Encrypted Content Flag     bits         1 (0x8000)      // stream contents encrypted if set
195					// Reserved                     DWORD        32              // reserved - set to zero
196					// Type-Specific Data           BYTESTREAM   variable        // type-specific format data, depending on value of Stream Type
197					// Error Correction Data        BYTESTREAM   variable        // error-correction-specific format data, depending on value of Error Correct Type
198
199					// There is one GETID3_ASF_Stream_Properties_Object for each stream (audio, video) but the
200					// stream number isn't known until halfway through decoding the structure, hence it
201					// it is decoded to a temporary variable and then stuck in the appropriate index later
202
203					$StreamPropertiesObjectData['offset']             = $NextObjectOffset + $offset;
204					$StreamPropertiesObjectData['objectid']           = $NextObjectGUID;
205					$StreamPropertiesObjectData['objectid_guid']      = $NextObjectGUIDtext;
206					$StreamPropertiesObjectData['objectsize']         = $NextObjectSize;
207					$StreamPropertiesObjectData['stream_type']        = substr($ASFHeaderData, $offset, 16);
208					$offset += 16;
209					$StreamPropertiesObjectData['stream_type_guid']   = $this->BytestringToGUID($StreamPropertiesObjectData['stream_type']);
210					$StreamPropertiesObjectData['error_correct_type'] = substr($ASFHeaderData, $offset, 16);
211					$offset += 16;
212					$StreamPropertiesObjectData['error_correct_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['error_correct_type']);
213					$StreamPropertiesObjectData['time_offset']        = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
214					$offset += 8;
215					$StreamPropertiesObjectData['type_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
216					$offset += 4;
217					$StreamPropertiesObjectData['error_data_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
218					$offset += 4;
219					$StreamPropertiesObjectData['flags_raw']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
220					$offset += 2;
221					$StreamPropertiesObjectStreamNumber               = $StreamPropertiesObjectData['flags_raw'] & 0x007F;
222					$StreamPropertiesObjectData['flags']['encrypted'] = (bool) ($StreamPropertiesObjectData['flags_raw'] & 0x8000);
223
224					$offset += 4; // reserved - DWORD
225					$StreamPropertiesObjectData['type_specific_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['type_data_length']);
226					$offset += $StreamPropertiesObjectData['type_data_length'];
227					$StreamPropertiesObjectData['error_correct_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['error_data_length']);
228					$offset += $StreamPropertiesObjectData['error_data_length'];
229
230					switch ($StreamPropertiesObjectData['stream_type']) {
231
232						case GETID3_ASF_Audio_Media:
233							$thisfile_audio['dataformat']   = (!empty($thisfile_audio['dataformat'])   ? $thisfile_audio['dataformat']   : 'asf');
234							$thisfile_audio['bitrate_mode'] = (!empty($thisfile_audio['bitrate_mode']) ? $thisfile_audio['bitrate_mode'] : 'cbr');
235
236							$audiodata = getid3_riff::parseWAVEFORMATex(substr($StreamPropertiesObjectData['type_specific_data'], 0, 16));
237							unset($audiodata['raw']);
238							$thisfile_audio = getid3_lib::array_merge_noclobber($audiodata, $thisfile_audio);
239							break;
240
241						case GETID3_ASF_Video_Media:
242							$thisfile_video['dataformat']   = (!empty($thisfile_video['dataformat'])   ? $thisfile_video['dataformat']   : 'asf');
243							$thisfile_video['bitrate_mode'] = (!empty($thisfile_video['bitrate_mode']) ? $thisfile_video['bitrate_mode'] : 'cbr');
244							break;
245
246						case GETID3_ASF_Command_Media:
247						default:
248							// do nothing
249							break;
250
251					}
252
253					$thisfile_asf['stream_properties_object'][$StreamPropertiesObjectStreamNumber] = $StreamPropertiesObjectData;
254					unset($StreamPropertiesObjectData); // clear for next stream, if any
255					break;
256
257				case GETID3_ASF_Header_Extension_Object:
258					// Header Extension Object: (mandatory, one only)
259					// Field Name                   Field Type   Size (bits)
260					// Object ID                    GUID         128             // GUID for Header Extension object - GETID3_ASF_Header_Extension_Object
261					// Object Size                  QWORD        64              // size of Header Extension object, including 46 bytes of Header Extension Object header
262					// Reserved Field 1             GUID         128             // hardcoded: GETID3_ASF_Reserved_1
263					// Reserved Field 2             WORD         16              // hardcoded: 0x00000006
264					// Header Extension Data Size   DWORD        32              // in bytes. valid: 0, or > 24. equals object size minus 46
265					// Header Extension Data        BYTESTREAM   variable        // array of zero or more extended header objects
266
267					// shortcut
268					$thisfile_asf['header_extension_object'] = array();
269					$thisfile_asf_headerextensionobject      = &$thisfile_asf['header_extension_object'];
270
271					$thisfile_asf_headerextensionobject['offset']              = $NextObjectOffset + $offset;
272					$thisfile_asf_headerextensionobject['objectid']            = $NextObjectGUID;
273					$thisfile_asf_headerextensionobject['objectid_guid']       = $NextObjectGUIDtext;
274					$thisfile_asf_headerextensionobject['objectsize']          = $NextObjectSize;
275					$thisfile_asf_headerextensionobject['reserved_1']          = substr($ASFHeaderData, $offset, 16);
276					$offset += 16;
277					$thisfile_asf_headerextensionobject['reserved_1_guid']     = $this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']);
278					if ($thisfile_asf_headerextensionobject['reserved_1'] != GETID3_ASF_Reserved_1) {
279						$this->warning('header_extension_object.reserved_1 GUID ('.$this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']).') does not match expected "GETID3_ASF_Reserved_1" GUID ('.$this->BytestringToGUID(GETID3_ASF_Reserved_1).')');
280						//return false;
281						break;
282					}
283					$thisfile_asf_headerextensionobject['reserved_2']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
284					$offset += 2;
285					if ($thisfile_asf_headerextensionobject['reserved_2'] != 6) {
286						$this->warning('header_extension_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_headerextensionobject['reserved_2']).') does not match expected value of "6"');
287						//return false;
288						break;
289					}
290					$thisfile_asf_headerextensionobject['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
291					$offset += 4;
292					$thisfile_asf_headerextensionobject['extension_data']      =                              substr($ASFHeaderData, $offset, $thisfile_asf_headerextensionobject['extension_data_size']);
293					$unhandled_sections = 0;
294					$thisfile_asf_headerextensionobject['extension_data_parsed'] = $this->HeaderExtensionObjectDataParse($thisfile_asf_headerextensionobject['extension_data'], $unhandled_sections);
295					if ($unhandled_sections === 0) {
296						unset($thisfile_asf_headerextensionobject['extension_data']);
297					}
298					$offset += $thisfile_asf_headerextensionobject['extension_data_size'];
299					break;
300
301				case GETID3_ASF_Codec_List_Object:
302					// Codec List Object: (optional, one only)
303					// Field Name                   Field Type   Size (bits)
304					// Object ID                    GUID         128             // GUID for Codec List object - GETID3_ASF_Codec_List_Object
305					// Object Size                  QWORD        64              // size of Codec List object, including 44 bytes of Codec List Object header
306					// Reserved                     GUID         128             // hardcoded: 86D15241-311D-11D0-A3A4-00A0C90348F6
307					// Codec Entries Count          DWORD        32              // number of entries in Codec Entries array
308					// Codec Entries                array of:    variable        //
309					// * Type                       WORD         16              // 0x0001 = Video Codec, 0x0002 = Audio Codec, 0xFFFF = Unknown Codec
310					// * Codec Name Length          WORD         16              // number of Unicode characters stored in the Codec Name field
311					// * Codec Name                 WCHAR        variable        // array of Unicode characters - name of codec used to create the content
312					// * Codec Description Length   WORD         16              // number of Unicode characters stored in the Codec Description field
313					// * Codec Description          WCHAR        variable        // array of Unicode characters - description of format used to create the content
314					// * Codec Information Length   WORD         16              // number of Unicode characters stored in the Codec Information field
315					// * Codec Information          BYTESTREAM   variable        // opaque array of information bytes about the codec used to create the content
316
317					// shortcut
318					$thisfile_asf['codec_list_object'] = array();
319					$thisfile_asf_codeclistobject      = &$thisfile_asf['codec_list_object'];
320
321					$thisfile_asf_codeclistobject['offset']                    = $NextObjectOffset + $offset;
322					$thisfile_asf_codeclistobject['objectid']                  = $NextObjectGUID;
323					$thisfile_asf_codeclistobject['objectid_guid']             = $NextObjectGUIDtext;
324					$thisfile_asf_codeclistobject['objectsize']                = $NextObjectSize;
325					$thisfile_asf_codeclistobject['reserved']                  = substr($ASFHeaderData, $offset, 16);
326					$offset += 16;
327					$thisfile_asf_codeclistobject['reserved_guid']             = $this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']);
328					if ($thisfile_asf_codeclistobject['reserved'] != $this->GUIDtoBytestring('86D15241-311D-11D0-A3A4-00A0C90348F6')) {
329						$this->warning('codec_list_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {86D15241-311D-11D0-A3A4-00A0C90348F6}');
330						//return false;
331						break;
332					}
333					$thisfile_asf_codeclistobject['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
334					$offset += 4;
335					for ($CodecEntryCounter = 0; $CodecEntryCounter < $thisfile_asf_codeclistobject['codec_entries_count']; $CodecEntryCounter++) {
336						// shortcut
337						$thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter] = array();
338						$thisfile_asf_codeclistobject_codecentries_current = &$thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter];
339
340						$thisfile_asf_codeclistobject_codecentries_current['type_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
341						$offset += 2;
342						$thisfile_asf_codeclistobject_codecentries_current['type'] = self::codecListObjectTypeLookup($thisfile_asf_codeclistobject_codecentries_current['type_raw']);
343
344						$CodecNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
345						$offset += 2;
346						$thisfile_asf_codeclistobject_codecentries_current['name'] = substr($ASFHeaderData, $offset, $CodecNameLength);
347						$offset += $CodecNameLength;
348
349						$CodecDescriptionLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
350						$offset += 2;
351						$thisfile_asf_codeclistobject_codecentries_current['description'] = substr($ASFHeaderData, $offset, $CodecDescriptionLength);
352						$offset += $CodecDescriptionLength;
353
354						$CodecInformationLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
355						$offset += 2;
356						$thisfile_asf_codeclistobject_codecentries_current['information'] = substr($ASFHeaderData, $offset, $CodecInformationLength);
357						$offset += $CodecInformationLength;
358
359						if ($thisfile_asf_codeclistobject_codecentries_current['type_raw'] == 2) { // audio codec
360
361							if (strpos($thisfile_asf_codeclistobject_codecentries_current['description'], ',') === false) {
362								$this->warning('[asf][codec_list_object][codec_entries]['.$CodecEntryCounter.'][description] expected to contain comma-separated list of parameters: "'.$thisfile_asf_codeclistobject_codecentries_current['description'].'"');
363							} else {
364
365								list($AudioCodecBitrate, $AudioCodecFrequency, $AudioCodecChannels) = explode(',', $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']));
366								$thisfile_audio['codec'] = $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['name']);
367
368								if (!isset($thisfile_audio['bitrate']) && strstr($AudioCodecBitrate, 'kbps')) {
369									$thisfile_audio['bitrate'] = (int) trim(str_replace('kbps', '', $AudioCodecBitrate)) * 1000;
370								}
371								//if (!isset($thisfile_video['bitrate']) && isset($thisfile_audio['bitrate']) && isset($thisfile_asf['file_properties_object']['max_bitrate']) && ($thisfile_asf_codeclistobject['codec_entries_count'] > 1)) {
372								if (empty($thisfile_video['bitrate']) && !empty($thisfile_audio['bitrate']) && !empty($info['bitrate'])) {
373									//$thisfile_video['bitrate'] = $thisfile_asf['file_properties_object']['max_bitrate'] - $thisfile_audio['bitrate'];
374									$thisfile_video['bitrate'] = $info['bitrate'] - $thisfile_audio['bitrate'];
375								}
376
377								$AudioCodecFrequency = (int) trim(str_replace('kHz', '', $AudioCodecFrequency));
378								switch ($AudioCodecFrequency) {
379									case 8:
380									case 8000:
381										$thisfile_audio['sample_rate'] = 8000;
382										break;
383
384									case 11:
385									case 11025:
386										$thisfile_audio['sample_rate'] = 11025;
387										break;
388
389									case 12:
390									case 12000:
391										$thisfile_audio['sample_rate'] = 12000;
392										break;
393
394									case 16:
395									case 16000:
396										$thisfile_audio['sample_rate'] = 16000;
397										break;
398
399									case 22:
400									case 22050:
401										$thisfile_audio['sample_rate'] = 22050;
402										break;
403
404									case 24:
405									case 24000:
406										$thisfile_audio['sample_rate'] = 24000;
407										break;
408
409									case 32:
410									case 32000:
411										$thisfile_audio['sample_rate'] = 32000;
412										break;
413
414									case 44:
415									case 441000:
416										$thisfile_audio['sample_rate'] = 44100;
417										break;
418
419									case 48:
420									case 48000:
421										$thisfile_audio['sample_rate'] = 48000;
422										break;
423
424									default:
425										$this->warning('unknown frequency: "'.$AudioCodecFrequency.'" ('.$this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']).')');
426										break;
427								}
428
429								if (!isset($thisfile_audio['channels'])) {
430									if (strstr($AudioCodecChannels, 'stereo')) {
431										$thisfile_audio['channels'] = 2;
432									} elseif (strstr($AudioCodecChannels, 'mono')) {
433										$thisfile_audio['channels'] = 1;
434									}
435								}
436
437							}
438						}
439					}
440					break;
441
442				case GETID3_ASF_Script_Command_Object:
443					// Script Command Object: (optional, one only)
444					// Field Name                   Field Type   Size (bits)
445					// Object ID                    GUID         128             // GUID for Script Command object - GETID3_ASF_Script_Command_Object
446					// Object Size                  QWORD        64              // size of Script Command object, including 44 bytes of Script Command Object header
447					// Reserved                     GUID         128             // hardcoded: 4B1ACBE3-100B-11D0-A39B-00A0C90348F6
448					// Commands Count               WORD         16              // number of Commands structures in the Script Commands Objects
449					// Command Types Count          WORD         16              // number of Command Types structures in the Script Commands Objects
450					// Command Types                array of:    variable        //
451					// * Command Type Name Length   WORD         16              // number of Unicode characters for Command Type Name
452					// * Command Type Name          WCHAR        variable        // array of Unicode characters - name of a type of command
453					// Commands                     array of:    variable        //
454					// * Presentation Time          DWORD        32              // presentation time of that command, in milliseconds
455					// * Type Index                 WORD         16              // type of this command, as a zero-based index into the array of Command Types of this object
456					// * Command Name Length        WORD         16              // number of Unicode characters for Command Name
457					// * Command Name               WCHAR        variable        // array of Unicode characters - name of this command
458
459					// shortcut
460					$thisfile_asf['script_command_object'] = array();
461					$thisfile_asf_scriptcommandobject      = &$thisfile_asf['script_command_object'];
462
463					$thisfile_asf_scriptcommandobject['offset']               = $NextObjectOffset + $offset;
464					$thisfile_asf_scriptcommandobject['objectid']             = $NextObjectGUID;
465					$thisfile_asf_scriptcommandobject['objectid_guid']        = $NextObjectGUIDtext;
466					$thisfile_asf_scriptcommandobject['objectsize']           = $NextObjectSize;
467					$thisfile_asf_scriptcommandobject['reserved']             = substr($ASFHeaderData, $offset, 16);
468					$offset += 16;
469					$thisfile_asf_scriptcommandobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']);
470					if ($thisfile_asf_scriptcommandobject['reserved'] != $this->GUIDtoBytestring('4B1ACBE3-100B-11D0-A39B-00A0C90348F6')) {
471						$this->warning('script_command_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4B1ACBE3-100B-11D0-A39B-00A0C90348F6}');
472						//return false;
473						break;
474					}
475					$thisfile_asf_scriptcommandobject['commands_count']       = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
476					$offset += 2;
477					$thisfile_asf_scriptcommandobject['command_types_count']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
478					$offset += 2;
479					for ($CommandTypesCounter = 0; $CommandTypesCounter < $thisfile_asf_scriptcommandobject['command_types_count']; $CommandTypesCounter++) {
480						$CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
481						$offset += 2;
482						$thisfile_asf_scriptcommandobject['command_types'][$CommandTypesCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
483						$offset += $CommandTypeNameLength;
484					}
485					for ($CommandsCounter = 0; $CommandsCounter < $thisfile_asf_scriptcommandobject['commands_count']; $CommandsCounter++) {
486						$thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['presentation_time']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
487						$offset += 4;
488						$thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['type_index']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
489						$offset += 2;
490
491						$CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
492						$offset += 2;
493						$thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength);
494						$offset += $CommandTypeNameLength;
495					}
496					break;
497
498				case GETID3_ASF_Marker_Object:
499					// Marker Object: (optional, one only)
500					// Field Name                   Field Type   Size (bits)
501					// Object ID                    GUID         128             // GUID for Marker object - GETID3_ASF_Marker_Object
502					// Object Size                  QWORD        64              // size of Marker object, including 48 bytes of Marker Object header
503					// Reserved                     GUID         128             // hardcoded: 4CFEDB20-75F6-11CF-9C0F-00A0C90349CB
504					// Markers Count                DWORD        32              // number of Marker structures in Marker Object
505					// Reserved                     WORD         16              // hardcoded: 0x0000
506					// Name Length                  WORD         16              // number of bytes in the Name field
507					// Name                         WCHAR        variable        // name of the Marker Object
508					// Markers                      array of:    variable        //
509					// * Offset                     QWORD        64              // byte offset into Data Object
510					// * Presentation Time          QWORD        64              // in 100-nanosecond units
511					// * Entry Length               WORD         16              // length in bytes of (Send Time + Flags + Marker Description Length + Marker Description + Padding)
512					// * Send Time                  DWORD        32              // in milliseconds
513					// * Flags                      DWORD        32              // hardcoded: 0x00000000
514					// * Marker Description Length  DWORD        32              // number of bytes in Marker Description field
515					// * Marker Description         WCHAR        variable        // array of Unicode characters - description of marker entry
516					// * Padding                    BYTESTREAM   variable        // optional padding bytes
517
518					// shortcut
519					$thisfile_asf['marker_object'] = array();
520					$thisfile_asf_markerobject     = &$thisfile_asf['marker_object'];
521
522					$thisfile_asf_markerobject['offset']               = $NextObjectOffset + $offset;
523					$thisfile_asf_markerobject['objectid']             = $NextObjectGUID;
524					$thisfile_asf_markerobject['objectid_guid']        = $NextObjectGUIDtext;
525					$thisfile_asf_markerobject['objectsize']           = $NextObjectSize;
526					$thisfile_asf_markerobject['reserved']             = substr($ASFHeaderData, $offset, 16);
527					$offset += 16;
528					$thisfile_asf_markerobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_markerobject['reserved']);
529					if ($thisfile_asf_markerobject['reserved'] != $this->GUIDtoBytestring('4CFEDB20-75F6-11CF-9C0F-00A0C90349CB')) {
530						$this->warning('marker_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_markerobject['reserved_1']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4CFEDB20-75F6-11CF-9C0F-00A0C90349CB}');
531						break;
532					}
533					$thisfile_asf_markerobject['markers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
534					$offset += 4;
535					$thisfile_asf_markerobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
536					$offset += 2;
537					if ($thisfile_asf_markerobject['reserved_2'] != 0) {
538						$this->warning('marker_object.reserved_2 ('.getid3_lib::PrintHexBytes($thisfile_asf_markerobject['reserved_2']).') does not match expected value of "0"');
539						break;
540					}
541					$thisfile_asf_markerobject['name_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
542					$offset += 2;
543					$thisfile_asf_markerobject['name'] = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['name_length']);
544					$offset += $thisfile_asf_markerobject['name_length'];
545					for ($MarkersCounter = 0; $MarkersCounter < $thisfile_asf_markerobject['markers_count']; $MarkersCounter++) {
546						$thisfile_asf_markerobject['markers'][$MarkersCounter]['offset']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
547						$offset += 8;
548						$thisfile_asf_markerobject['markers'][$MarkersCounter]['presentation_time']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
549						$offset += 8;
550						$thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length']              = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
551						$offset += 2;
552						$thisfile_asf_markerobject['markers'][$MarkersCounter]['send_time']                 = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
553						$offset += 4;
554						$thisfile_asf_markerobject['markers'][$MarkersCounter]['flags']                     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
555						$offset += 4;
556						$thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
557						$offset += 4;
558						$thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description']        = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']);
559						$offset += $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
560						$PaddingLength = $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length'] - 4 -  4 - 4 - $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'];
561						if ($PaddingLength > 0) {
562							$thisfile_asf_markerobject['markers'][$MarkersCounter]['padding']               = substr($ASFHeaderData, $offset, $PaddingLength);
563							$offset += $PaddingLength;
564						}
565					}
566					break;
567
568				case GETID3_ASF_Bitrate_Mutual_Exclusion_Object:
569					// Bitrate Mutual Exclusion Object: (optional)
570					// Field Name                   Field Type   Size (bits)
571					// Object ID                    GUID         128             // GUID for Bitrate Mutual Exclusion object - GETID3_ASF_Bitrate_Mutual_Exclusion_Object
572					// Object Size                  QWORD        64              // size of Bitrate Mutual Exclusion object, including 42 bytes of Bitrate Mutual Exclusion Object header
573					// Exlusion Type                GUID         128             // nature of mutual exclusion relationship. one of: (GETID3_ASF_Mutex_Bitrate, GETID3_ASF_Mutex_Unknown)
574					// Stream Numbers Count         WORD         16              // number of video streams
575					// Stream Numbers               WORD         variable        // array of mutually exclusive video stream numbers. 1 <= valid <= 127
576
577					// shortcut
578					$thisfile_asf['bitrate_mutual_exclusion_object'] = array();
579					$thisfile_asf_bitratemutualexclusionobject       = &$thisfile_asf['bitrate_mutual_exclusion_object'];
580
581					$thisfile_asf_bitratemutualexclusionobject['offset']               = $NextObjectOffset + $offset;
582					$thisfile_asf_bitratemutualexclusionobject['objectid']             = $NextObjectGUID;
583					$thisfile_asf_bitratemutualexclusionobject['objectid_guid']        = $NextObjectGUIDtext;
584					$thisfile_asf_bitratemutualexclusionobject['objectsize']           = $NextObjectSize;
585					$thisfile_asf_bitratemutualexclusionobject['reserved']             = substr($ASFHeaderData, $offset, 16);
586					$thisfile_asf_bitratemutualexclusionobject['reserved_guid']        = $this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']);
587					$offset += 16;
588					if (($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Bitrate) && ($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Unknown)) {
589						$this->warning('bitrate_mutual_exclusion_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']).'} does not match expected "GETID3_ASF_Mutex_Bitrate" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Bitrate).'} or  "GETID3_ASF_Mutex_Unknown" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Unknown).'}');
590						//return false;
591						break;
592					}
593					$thisfile_asf_bitratemutualexclusionobject['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
594					$offset += 2;
595					for ($StreamNumberCounter = 0; $StreamNumberCounter < $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count']; $StreamNumberCounter++) {
596						$thisfile_asf_bitratemutualexclusionobject['stream_numbers'][$StreamNumberCounter] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
597						$offset += 2;
598					}
599					break;
600
601				case GETID3_ASF_Error_Correction_Object:
602					// Error Correction Object: (optional, one only)
603					// Field Name                   Field Type   Size (bits)
604					// Object ID                    GUID         128             // GUID for Error Correction object - GETID3_ASF_Error_Correction_Object
605					// Object Size                  QWORD        64              // size of Error Correction object, including 44 bytes of Error Correction Object header
606					// Error Correction Type        GUID         128             // type of error correction. one of: (GETID3_ASF_No_Error_Correction, GETID3_ASF_Audio_Spread)
607					// Error Correction Data Length DWORD        32              // number of bytes in Error Correction Data field
608					// Error Correction Data        BYTESTREAM   variable        // structure depends on value of Error Correction Type field
609
610					// shortcut
611					$thisfile_asf['error_correction_object'] = array();
612					$thisfile_asf_errorcorrectionobject      = &$thisfile_asf['error_correction_object'];
613
614					$thisfile_asf_errorcorrectionobject['offset']                = $NextObjectOffset + $offset;
615					$thisfile_asf_errorcorrectionobject['objectid']              = $NextObjectGUID;
616					$thisfile_asf_errorcorrectionobject['objectid_guid']         = $NextObjectGUIDtext;
617					$thisfile_asf_errorcorrectionobject['objectsize']            = $NextObjectSize;
618					$thisfile_asf_errorcorrectionobject['error_correction_type'] = substr($ASFHeaderData, $offset, 16);
619					$offset += 16;
620					$thisfile_asf_errorcorrectionobject['error_correction_guid'] = $this->BytestringToGUID($thisfile_asf_errorcorrectionobject['error_correction_type']);
621					$thisfile_asf_errorcorrectionobject['error_correction_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
622					$offset += 4;
623					switch ($thisfile_asf_errorcorrectionobject['error_correction_type']) {
624						case GETID3_ASF_No_Error_Correction:
625							// should be no data, but just in case there is, skip to the end of the field
626							$offset += $thisfile_asf_errorcorrectionobject['error_correction_data_length'];
627							break;
628
629						case GETID3_ASF_Audio_Spread:
630							// Field Name                   Field Type   Size (bits)
631							// Span                         BYTE         8               // number of packets over which audio will be spread.
632							// Virtual Packet Length        WORD         16              // size of largest audio payload found in audio stream
633							// Virtual Chunk Length         WORD         16              // size of largest audio payload found in audio stream
634							// Silence Data Length          WORD         16              // number of bytes in Silence Data field
635							// Silence Data                 BYTESTREAM   variable        // hardcoded: 0x00 * (Silence Data Length) bytes
636
637							$thisfile_asf_errorcorrectionobject['span']                  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 1));
638							$offset += 1;
639							$thisfile_asf_errorcorrectionobject['virtual_packet_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
640							$offset += 2;
641							$thisfile_asf_errorcorrectionobject['virtual_chunk_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
642							$offset += 2;
643							$thisfile_asf_errorcorrectionobject['silence_data_length']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
644							$offset += 2;
645							$thisfile_asf_errorcorrectionobject['silence_data']          = substr($ASFHeaderData, $offset, $thisfile_asf_errorcorrectionobject['silence_data_length']);
646							$offset += $thisfile_asf_errorcorrectionobject['silence_data_length'];
647							break;
648
649						default:
650							$this->warning('error_correction_object.error_correction_type GUID {'.$this->BytestringToGUID($thisfile_asf_errorcorrectionobject['reserved']).'} does not match expected "GETID3_ASF_No_Error_Correction" GUID {'.$this->BytestringToGUID(GETID3_ASF_No_Error_Correction).'} or  "GETID3_ASF_Audio_Spread" GUID {'.$this->BytestringToGUID(GETID3_ASF_Audio_Spread).'}');
651							//return false;
652							break;
653					}
654
655					break;
656
657				case GETID3_ASF_Content_Description_Object:
658					// Content Description Object: (optional, one only)
659					// Field Name                   Field Type   Size (bits)
660					// Object ID                    GUID         128             // GUID for Content Description object - GETID3_ASF_Content_Description_Object
661					// Object Size                  QWORD        64              // size of Content Description object, including 34 bytes of Content Description Object header
662					// Title Length                 WORD         16              // number of bytes in Title field
663					// Author Length                WORD         16              // number of bytes in Author field
664					// Copyright Length             WORD         16              // number of bytes in Copyright field
665					// Description Length           WORD         16              // number of bytes in Description field
666					// Rating Length                WORD         16              // number of bytes in Rating field
667					// Title                        WCHAR        16              // array of Unicode characters - Title
668					// Author                       WCHAR        16              // array of Unicode characters - Author
669					// Copyright                    WCHAR        16              // array of Unicode characters - Copyright
670					// Description                  WCHAR        16              // array of Unicode characters - Description
671					// Rating                       WCHAR        16              // array of Unicode characters - Rating
672
673					// shortcut
674					$thisfile_asf['content_description_object'] = array();
675					$thisfile_asf_contentdescriptionobject      = &$thisfile_asf['content_description_object'];
676
677					$thisfile_asf_contentdescriptionobject['offset']                = $NextObjectOffset + $offset;
678					$thisfile_asf_contentdescriptionobject['objectid']              = $NextObjectGUID;
679					$thisfile_asf_contentdescriptionobject['objectid_guid']         = $NextObjectGUIDtext;
680					$thisfile_asf_contentdescriptionobject['objectsize']            = $NextObjectSize;
681					$thisfile_asf_contentdescriptionobject['title_length']          = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
682					$offset += 2;
683					$thisfile_asf_contentdescriptionobject['author_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
684					$offset += 2;
685					$thisfile_asf_contentdescriptionobject['copyright_length']      = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
686					$offset += 2;
687					$thisfile_asf_contentdescriptionobject['description_length']    = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
688					$offset += 2;
689					$thisfile_asf_contentdescriptionobject['rating_length']         = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
690					$offset += 2;
691					$thisfile_asf_contentdescriptionobject['title']                 = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['title_length']);
692					$offset += $thisfile_asf_contentdescriptionobject['title_length'];
693					$thisfile_asf_contentdescriptionobject['author']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['author_length']);
694					$offset += $thisfile_asf_contentdescriptionobject['author_length'];
695					$thisfile_asf_contentdescriptionobject['copyright']             = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['copyright_length']);
696					$offset += $thisfile_asf_contentdescriptionobject['copyright_length'];
697					$thisfile_asf_contentdescriptionobject['description']           = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['description_length']);
698					$offset += $thisfile_asf_contentdescriptionobject['description_length'];
699					$thisfile_asf_contentdescriptionobject['rating']                = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['rating_length']);
700					$offset += $thisfile_asf_contentdescriptionobject['rating_length'];
701
702					$ASFcommentKeysToCopy = array('title'=>'title', 'author'=>'artist', 'copyright'=>'copyright', 'description'=>'comment', 'rating'=>'rating');
703					foreach ($ASFcommentKeysToCopy as $keytocopyfrom => $keytocopyto) {
704						if (!empty($thisfile_asf_contentdescriptionobject[$keytocopyfrom])) {
705							$thisfile_asf_comments[$keytocopyto][] = $this->TrimTerm($thisfile_asf_contentdescriptionobject[$keytocopyfrom]);
706						}
707					}
708					break;
709
710				case GETID3_ASF_Extended_Content_Description_Object:
711					// Extended Content Description Object: (optional, one only)
712					// Field Name                   Field Type   Size (bits)
713					// Object ID                    GUID         128             // GUID for Extended Content Description object - GETID3_ASF_Extended_Content_Description_Object
714					// Object Size                  QWORD        64              // size of ExtendedContent Description object, including 26 bytes of Extended Content Description Object header
715					// Content Descriptors Count    WORD         16              // number of entries in Content Descriptors list
716					// Content Descriptors          array of:    variable        //
717					// * Descriptor Name Length     WORD         16              // size in bytes of Descriptor Name field
718					// * Descriptor Name            WCHAR        variable        // array of Unicode characters - Descriptor Name
719					// * Descriptor Value Data Type WORD         16              // Lookup array:
720																					// 0x0000 = Unicode String (variable length)
721																					// 0x0001 = BYTE array     (variable length)
722																					// 0x0002 = BOOL           (DWORD, 32 bits)
723																					// 0x0003 = DWORD          (DWORD, 32 bits)
724																					// 0x0004 = QWORD          (QWORD, 64 bits)
725																					// 0x0005 = WORD           (WORD,  16 bits)
726					// * Descriptor Value Length    WORD         16              // number of bytes stored in Descriptor Value field
727					// * Descriptor Value           variable     variable        // value for Content Descriptor
728
729					// shortcut
730					$thisfile_asf['extended_content_description_object'] = array();
731					$thisfile_asf_extendedcontentdescriptionobject       = &$thisfile_asf['extended_content_description_object'];
732
733					$thisfile_asf_extendedcontentdescriptionobject['offset']                    = $NextObjectOffset + $offset;
734					$thisfile_asf_extendedcontentdescriptionobject['objectid']                  = $NextObjectGUID;
735					$thisfile_asf_extendedcontentdescriptionobject['objectid_guid']             = $NextObjectGUIDtext;
736					$thisfile_asf_extendedcontentdescriptionobject['objectsize']                = $NextObjectSize;
737					$thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
738					$offset += 2;
739					for ($ExtendedContentDescriptorsCounter = 0; $ExtendedContentDescriptorsCounter < $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count']; $ExtendedContentDescriptorsCounter++) {
740						// shortcut
741						$thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter] = array();
742						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current                 = &$thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter];
743
744						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['base_offset']  = $offset + 30;
745						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']  = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
746						$offset += 2;
747						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']         = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']);
748						$offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length'];
749						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']   = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
750						$offset += 2;
751						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
752						$offset += 2;
753						$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']        = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length']);
754						$offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'];
755						switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
756							case 0x0000: // Unicode string
757								break;
758
759							case 0x0001: // BYTE array
760								// do nothing
761								break;
762
763							case 0x0002: // BOOL
764								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = (bool) getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
765								break;
766
767							case 0x0003: // DWORD
768							case 0x0004: // QWORD
769							case 0x0005: // WORD
770								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
771								break;
772
773							default:
774								$this->warning('extended_content_description.content_descriptors.'.$ExtendedContentDescriptorsCounter.'.value_type is invalid ('.$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type'].')');
775								//return false;
776								break;
777						}
778						switch ($this->TrimConvert(strtolower($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']))) {
779
780							case 'wm/albumartist':
781							case 'artist':
782								// Note: not 'artist', that comes from 'author' tag
783								$thisfile_asf_comments['albumartist'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
784								break;
785
786							case 'wm/albumtitle':
787							case 'album':
788								$thisfile_asf_comments['album']  = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
789								break;
790
791							case 'wm/genre':
792							case 'genre':
793								$thisfile_asf_comments['genre'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
794								break;
795
796							case 'wm/partofset':
797								$thisfile_asf_comments['partofset'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
798								break;
799
800							case 'wm/tracknumber':
801							case 'tracknumber':
802								// be careful casting to int: casting unicode strings to int gives unexpected results (stops parsing at first non-numeric character)
803								$thisfile_asf_comments['track_number'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
804								foreach ($thisfile_asf_comments['track_number'] as $key => $value) {
805									if (preg_match('/^[0-9\x00]+$/', $value)) {
806										$thisfile_asf_comments['track_number'][$key] = intval(str_replace("\x00", '', $value));
807									}
808								}
809								break;
810
811							case 'wm/track':
812								if (empty($thisfile_asf_comments['track_number'])) {
813									$thisfile_asf_comments['track_number'] = array(1 + (int) $this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
814								}
815								break;
816
817							case 'wm/year':
818							case 'year':
819							case 'date':
820								$thisfile_asf_comments['year'] = array( $this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
821								break;
822
823							case 'wm/lyrics':
824							case 'lyrics':
825								$thisfile_asf_comments['lyrics'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
826								break;
827
828							case 'isvbr':
829								if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']) {
830									$thisfile_audio['bitrate_mode'] = 'vbr';
831									$thisfile_video['bitrate_mode'] = 'vbr';
832								}
833								break;
834
835							case 'id3':
836								$this->getid3->include_module('tag.id3v2');
837
838								$getid3_id3v2 = new getid3_id3v2($this->getid3);
839								$getid3_id3v2->AnalyzeString($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
840								unset($getid3_id3v2);
841
842								if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] > 1024) {
843									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = '<value too large to display>';
844								}
845								break;
846
847							case 'wm/encodingtime':
848								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
849								$thisfile_asf_comments['encoding_time_unix'] = array($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix']);
850								break;
851
852							case 'wm/picture':
853								$WMpicture = $this->ASF_WMpicture($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
854								foreach ($WMpicture as $key => $value) {
855									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current[$key] = $value;
856								}
857								unset($WMpicture);
858/*
859								$wm_picture_offset = 0;
860								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 1));
861								$wm_picture_offset += 1;
862								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type']    = self::WMpictureTypeLookup($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id']);
863								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_size']    = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 4));
864								$wm_picture_offset += 4;
865
866								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
867								do {
868									$next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
869									$wm_picture_offset += 2;
870									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] .= $next_byte_pair;
871								} while ($next_byte_pair !== "\x00\x00");
872
873								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] = '';
874								do {
875									$next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2);
876									$wm_picture_offset += 2;
877									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] .= $next_byte_pair;
878								} while ($next_byte_pair !== "\x00\x00");
879
880								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['dataoffset'] = $wm_picture_offset;
881								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'] = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset);
882								unset($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']);
883
884								$imageinfo = array();
885								$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = '';
886								$imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], $imageinfo);
887								unset($imageinfo);
888								if (!empty($imagechunkcheck)) {
889									$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
890								}
891								if (!isset($thisfile_asf_comments['picture'])) {
892									$thisfile_asf_comments['picture'] = array();
893								}
894								$thisfile_asf_comments['picture'][] = array('data'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], 'image_mime'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime']);
895*/
896								break;
897
898							default:
899								switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) {
900									case 0: // Unicode string
901										if (substr($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']), 0, 3) == 'WM/') {
902											$thisfile_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'])))] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']));
903										}
904										break;
905
906									case 1:
907										break;
908								}
909								break;
910						}
911
912					}
913					break;
914
915				case GETID3_ASF_Stream_Bitrate_Properties_Object:
916					// Stream Bitrate Properties Object: (optional, one only)
917					// Field Name                   Field Type   Size (bits)
918					// Object ID                    GUID         128             // GUID for Stream Bitrate Properties object - GETID3_ASF_Stream_Bitrate_Properties_Object
919					// Object Size                  QWORD        64              // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header
920					// Bitrate Records Count        WORD         16              // number of records in Bitrate Records
921					// Bitrate Records              array of:    variable        //
922					// * Flags                      WORD         16              //
923					// * * Stream Number            bits         7  (0x007F)     // number of this stream
924					// * * Reserved                 bits         9  (0xFF80)     // hardcoded: 0
925					// * Average Bitrate            DWORD        32              // in bits per second
926
927					// shortcut
928					$thisfile_asf['stream_bitrate_properties_object'] = array();
929					$thisfile_asf_streambitratepropertiesobject       = &$thisfile_asf['stream_bitrate_properties_object'];
930
931					$thisfile_asf_streambitratepropertiesobject['offset']                    = $NextObjectOffset + $offset;
932					$thisfile_asf_streambitratepropertiesobject['objectid']                  = $NextObjectGUID;
933					$thisfile_asf_streambitratepropertiesobject['objectid_guid']             = $NextObjectGUIDtext;
934					$thisfile_asf_streambitratepropertiesobject['objectsize']                = $NextObjectSize;
935					$thisfile_asf_streambitratepropertiesobject['bitrate_records_count']     = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
936					$offset += 2;
937					for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
938						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
939						$offset += 2;
940						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags']['stream_number'] = $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] & 0x007F;
941						$thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
942						$offset += 4;
943					}
944					break;
945
946				case GETID3_ASF_Padding_Object:
947					// Padding Object: (optional)
948					// Field Name                   Field Type   Size (bits)
949					// Object ID                    GUID         128             // GUID for Padding object - GETID3_ASF_Padding_Object
950					// Object Size                  QWORD        64              // size of Padding object, including 24 bytes of ASF Padding Object header
951					// Padding Data                 BYTESTREAM   variable        // ignore
952
953					// shortcut
954					$thisfile_asf['padding_object'] = array();
955					$thisfile_asf_paddingobject     = &$thisfile_asf['padding_object'];
956
957					$thisfile_asf_paddingobject['offset']                    = $NextObjectOffset + $offset;
958					$thisfile_asf_paddingobject['objectid']                  = $NextObjectGUID;
959					$thisfile_asf_paddingobject['objectid_guid']             = $NextObjectGUIDtext;
960					$thisfile_asf_paddingobject['objectsize']                = $NextObjectSize;
961					$thisfile_asf_paddingobject['padding_length']            = $thisfile_asf_paddingobject['objectsize'] - 16 - 8;
962					$thisfile_asf_paddingobject['padding']                   = substr($ASFHeaderData, $offset, $thisfile_asf_paddingobject['padding_length']);
963					$offset += ($NextObjectSize - 16 - 8);
964					break;
965
966				case GETID3_ASF_Extended_Content_Encryption_Object:
967				case GETID3_ASF_Content_Encryption_Object:
968					// WMA DRM - just ignore
969					$offset += ($NextObjectSize - 16 - 8);
970					break;
971
972				default:
973					// Implementations shall ignore any standard or non-standard object that they do not know how to handle.
974					if ($this->GUIDname($NextObjectGUIDtext)) {
975						$this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8));
976					} else {
977						$this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8));
978					}
979					$offset += ($NextObjectSize - 16 - 8);
980					break;
981			}
982		}
983		if (isset($thisfile_asf_streambitratepropertiesobject['bitrate_records_count'])) {
984			$ASFbitrateAudio = 0;
985			$ASFbitrateVideo = 0;
986			for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) {
987				if (isset($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter])) {
988					switch ($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter]['type_raw']) {
989						case 1:
990							$ASFbitrateVideo += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
991							break;
992
993						case 2:
994							$ASFbitrateAudio += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'];
995							break;
996
997						default:
998							// do nothing
999							break;
1000					}
1001				}
1002			}
1003			if ($ASFbitrateAudio > 0) {
1004				$thisfile_audio['bitrate'] = $ASFbitrateAudio;
1005			}
1006			if ($ASFbitrateVideo > 0) {
1007				$thisfile_video['bitrate'] = $ASFbitrateVideo;
1008			}
1009		}
1010		if (isset($thisfile_asf['stream_properties_object']) && is_array($thisfile_asf['stream_properties_object'])) {
1011
1012			$thisfile_audio['bitrate'] = 0;
1013			$thisfile_video['bitrate'] = 0;
1014
1015			foreach ($thisfile_asf['stream_properties_object'] as $streamnumber => $streamdata) {
1016
1017				switch ($streamdata['stream_type']) {
1018					case GETID3_ASF_Audio_Media:
1019						// Field Name                   Field Type   Size (bits)
1020						// Codec ID / Format Tag        WORD         16              // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure
1021						// Number of Channels           WORD         16              // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure
1022						// Samples Per Second           DWORD        32              // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure
1023						// Average number of Bytes/sec  DWORD        32              // bytes/sec of audio stream  - defined as nAvgBytesPerSec field of WAVEFORMATEX structure
1024						// Block Alignment              WORD         16              // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure
1025						// Bits per sample              WORD         16              // bits per sample of mono data. set to zero for variable bitrate codecs. defined as wBitsPerSample field of WAVEFORMATEX structure
1026						// Codec Specific Data Size     WORD         16              // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure
1027						// Codec Specific Data          BYTESTREAM   variable        // array of codec-specific data bytes
1028
1029						// shortcut
1030						$thisfile_asf['audio_media'][$streamnumber] = array();
1031						$thisfile_asf_audiomedia_currentstream      = &$thisfile_asf['audio_media'][$streamnumber];
1032
1033						$audiomediaoffset = 0;
1034
1035						$thisfile_asf_audiomedia_currentstream = getid3_riff::parseWAVEFORMATex(substr($streamdata['type_specific_data'], $audiomediaoffset, 16));
1036						$audiomediaoffset += 16;
1037
1038						$thisfile_audio['lossless'] = false;
1039						switch ($thisfile_asf_audiomedia_currentstream['raw']['wFormatTag']) {
1040							case 0x0001: // PCM
1041							case 0x0163: // WMA9 Lossless
1042								$thisfile_audio['lossless'] = true;
1043								break;
1044						}
1045
1046						if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1047							foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1048								if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1049									$thisfile_asf_audiomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1050									$thisfile_audio['bitrate'] += $dataarray['bitrate'];
1051									break;
1052								}
1053							}
1054						} else {
1055							if (!empty($thisfile_asf_audiomedia_currentstream['bytes_sec'])) {
1056								$thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bytes_sec'] * 8;
1057							} elseif (!empty($thisfile_asf_audiomedia_currentstream['bitrate'])) {
1058								$thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bitrate'];
1059							}
1060						}
1061						$thisfile_audio['streams'][$streamnumber]                = $thisfile_asf_audiomedia_currentstream;
1062						$thisfile_audio['streams'][$streamnumber]['wformattag']  = $thisfile_asf_audiomedia_currentstream['raw']['wFormatTag'];
1063						$thisfile_audio['streams'][$streamnumber]['lossless']    = $thisfile_audio['lossless'];
1064						$thisfile_audio['streams'][$streamnumber]['bitrate']     = $thisfile_audio['bitrate'];
1065						$thisfile_audio['streams'][$streamnumber]['dataformat']  = 'wma';
1066						unset($thisfile_audio['streams'][$streamnumber]['raw']);
1067
1068						$thisfile_asf_audiomedia_currentstream['codec_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $audiomediaoffset, 2));
1069						$audiomediaoffset += 2;
1070						$thisfile_asf_audiomedia_currentstream['codec_data']      = substr($streamdata['type_specific_data'], $audiomediaoffset, $thisfile_asf_audiomedia_currentstream['codec_data_size']);
1071						$audiomediaoffset += $thisfile_asf_audiomedia_currentstream['codec_data_size'];
1072
1073						break;
1074
1075					case GETID3_ASF_Video_Media:
1076						// Field Name                   Field Type   Size (bits)
1077						// Encoded Image Width          DWORD        32              // width of image in pixels
1078						// Encoded Image Height         DWORD        32              // height of image in pixels
1079						// Reserved Flags               BYTE         8               // hardcoded: 0x02
1080						// Format Data Size             WORD         16              // size of Format Data field in bytes
1081						// Format Data                  array of:    variable        //
1082						// * Format Data Size           DWORD        32              // number of bytes in Format Data field, in bytes - defined as biSize field of BITMAPINFOHEADER structure
1083						// * Image Width                LONG         32              // width of encoded image in pixels - defined as biWidth field of BITMAPINFOHEADER structure
1084						// * Image Height               LONG         32              // height of encoded image in pixels - defined as biHeight field of BITMAPINFOHEADER structure
1085						// * Reserved                   WORD         16              // hardcoded: 0x0001 - defined as biPlanes field of BITMAPINFOHEADER structure
1086						// * Bits Per Pixel Count       WORD         16              // bits per pixel - defined as biBitCount field of BITMAPINFOHEADER structure
1087						// * Compression ID             FOURCC       32              // fourcc of video codec - defined as biCompression field of BITMAPINFOHEADER structure
1088						// * Image Size                 DWORD        32              // image size in bytes - defined as biSizeImage field of BITMAPINFOHEADER structure
1089						// * Horizontal Pixels / Meter  DWORD        32              // horizontal resolution of target device in pixels per meter - defined as biXPelsPerMeter field of BITMAPINFOHEADER structure
1090						// * Vertical Pixels / Meter    DWORD        32              // vertical resolution of target device in pixels per meter - defined as biYPelsPerMeter field of BITMAPINFOHEADER structure
1091						// * Colors Used Count          DWORD        32              // number of color indexes in the color table that are actually used - defined as biClrUsed field of BITMAPINFOHEADER structure
1092						// * Important Colors Count     DWORD        32              // number of color index required for displaying bitmap. if zero, all colors are required. defined as biClrImportant field of BITMAPINFOHEADER structure
1093						// * Codec Specific Data        BYTESTREAM   variable        // array of codec-specific data bytes
1094
1095						// shortcut
1096						$thisfile_asf['video_media'][$streamnumber] = array();
1097						$thisfile_asf_videomedia_currentstream      = &$thisfile_asf['video_media'][$streamnumber];
1098
1099						$videomediaoffset = 0;
1100						$thisfile_asf_videomedia_currentstream['image_width']                     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1101						$videomediaoffset += 4;
1102						$thisfile_asf_videomedia_currentstream['image_height']                    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1103						$videomediaoffset += 4;
1104						$thisfile_asf_videomedia_currentstream['flags']                           = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 1));
1105						$videomediaoffset += 1;
1106						$thisfile_asf_videomedia_currentstream['format_data_size']                = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1107						$videomediaoffset += 2;
1108						$thisfile_asf_videomedia_currentstream['format_data']['format_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1109						$videomediaoffset += 4;
1110						$thisfile_asf_videomedia_currentstream['format_data']['image_width']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1111						$videomediaoffset += 4;
1112						$thisfile_asf_videomedia_currentstream['format_data']['image_height']     = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1113						$videomediaoffset += 4;
1114						$thisfile_asf_videomedia_currentstream['format_data']['reserved']         = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1115						$videomediaoffset += 2;
1116						$thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel']   = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2));
1117						$videomediaoffset += 2;
1118						$thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']     = substr($streamdata['type_specific_data'], $videomediaoffset, 4);
1119						$videomediaoffset += 4;
1120						$thisfile_asf_videomedia_currentstream['format_data']['image_size']       = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1121						$videomediaoffset += 4;
1122						$thisfile_asf_videomedia_currentstream['format_data']['horizontal_pels']  = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1123						$videomediaoffset += 4;
1124						$thisfile_asf_videomedia_currentstream['format_data']['vertical_pels']    = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1125						$videomediaoffset += 4;
1126						$thisfile_asf_videomedia_currentstream['format_data']['colors_used']      = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1127						$videomediaoffset += 4;
1128						$thisfile_asf_videomedia_currentstream['format_data']['colors_important'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4));
1129						$videomediaoffset += 4;
1130						$thisfile_asf_videomedia_currentstream['format_data']['codec_data']       = substr($streamdata['type_specific_data'], $videomediaoffset);
1131
1132						if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) {
1133							foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) {
1134								if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) {
1135									$thisfile_asf_videomedia_currentstream['bitrate'] = $dataarray['bitrate'];
1136									$thisfile_video['streams'][$streamnumber]['bitrate'] = $dataarray['bitrate'];
1137									$thisfile_video['bitrate'] += $dataarray['bitrate'];
1138									break;
1139								}
1140							}
1141						}
1142
1143						$thisfile_asf_videomedia_currentstream['format_data']['codec'] = getid3_riff::fourccLookup($thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']);
1144
1145						$thisfile_video['streams'][$streamnumber]['fourcc']          = $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc'];
1146						$thisfile_video['streams'][$streamnumber]['codec']           = $thisfile_asf_videomedia_currentstream['format_data']['codec'];
1147						$thisfile_video['streams'][$streamnumber]['resolution_x']    = $thisfile_asf_videomedia_currentstream['image_width'];
1148						$thisfile_video['streams'][$streamnumber]['resolution_y']    = $thisfile_asf_videomedia_currentstream['image_height'];
1149						$thisfile_video['streams'][$streamnumber]['bits_per_sample'] = $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel'];
1150						break;
1151
1152					default:
1153						break;
1154				}
1155			}
1156		}
1157
1158		while ($this->ftell() < $info['avdataend']) {
1159			$NextObjectDataHeader = $this->fread(24);
1160			$offset = 0;
1161			$NextObjectGUID = substr($NextObjectDataHeader, 0, 16);
1162			$offset += 16;
1163			$NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
1164			$NextObjectSize = getid3_lib::LittleEndian2Int(substr($NextObjectDataHeader, $offset, 8));
1165			$offset += 8;
1166
1167			switch ($NextObjectGUID) {
1168				case GETID3_ASF_Data_Object:
1169					// Data Object: (mandatory, one only)
1170					// Field Name                       Field Type   Size (bits)
1171					// Object ID                        GUID         128             // GUID for Data object - GETID3_ASF_Data_Object
1172					// Object Size                      QWORD        64              // size of Data object, including 50 bytes of Data Object header. may be 0 if FilePropertiesObject.BroadcastFlag == 1
1173					// File ID                          GUID         128             // unique identifier. identical to File ID field in Header Object
1174					// Total Data Packets               QWORD        64              // number of Data Packet entries in Data Object. invalid if FilePropertiesObject.BroadcastFlag == 1
1175					// Reserved                         WORD         16              // hardcoded: 0x0101
1176
1177					// shortcut
1178					$thisfile_asf['data_object'] = array();
1179					$thisfile_asf_dataobject     = &$thisfile_asf['data_object'];
1180
1181					$DataObjectData = $NextObjectDataHeader.$this->fread(50 - 24);
1182					$offset = 24;
1183
1184					$thisfile_asf_dataobject['objectid']           = $NextObjectGUID;
1185					$thisfile_asf_dataobject['objectid_guid']      = $NextObjectGUIDtext;
1186					$thisfile_asf_dataobject['objectsize']         = $NextObjectSize;
1187
1188					$thisfile_asf_dataobject['fileid']             = substr($DataObjectData, $offset, 16);
1189					$offset += 16;
1190					$thisfile_asf_dataobject['fileid_guid']        = $this->BytestringToGUID($thisfile_asf_dataobject['fileid']);
1191					$thisfile_asf_dataobject['total_data_packets'] = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 8));
1192					$offset += 8;
1193					$thisfile_asf_dataobject['reserved']           = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 2));
1194					$offset += 2;
1195					if ($thisfile_asf_dataobject['reserved'] != 0x0101) {
1196						$this->warning('data_object.reserved ('.getid3_lib::PrintHexBytes($thisfile_asf_dataobject['reserved']).') does not match expected value of "0x0101"');
1197						//return false;
1198						break;
1199					}
1200
1201					// Data Packets                     array of:    variable        //
1202					// * Error Correction Flags         BYTE         8               //
1203					// * * Error Correction Data Length bits         4               // if Error Correction Length Type == 00, size of Error Correction Data in bytes, else hardcoded: 0000
1204					// * * Opaque Data Present          bits         1               //
1205					// * * Error Correction Length Type bits         2               // number of bits for size of the error correction data. hardcoded: 00
1206					// * * Error Correction Present     bits         1               // If set, use Opaque Data Packet structure, else use Payload structure
1207					// * Error Correction Data
1208
1209					$info['avdataoffset'] = $this->ftell();
1210					$this->fseek(($thisfile_asf_dataobject['objectsize'] - 50), SEEK_CUR); // skip actual audio/video data
1211					$info['avdataend'] = $this->ftell();
1212					break;
1213
1214				case GETID3_ASF_Simple_Index_Object:
1215					// Simple Index Object: (optional, recommended, one per video stream)
1216					// Field Name                       Field Type   Size (bits)
1217					// Object ID                        GUID         128             // GUID for Simple Index object - GETID3_ASF_Data_Object
1218					// Object Size                      QWORD        64              // size of Simple Index object, including 56 bytes of Simple Index Object header
1219					// File ID                          GUID         128             // unique identifier. may be zero or identical to File ID field in Data Object and Header Object
1220					// Index Entry Time Interval        QWORD        64              // interval between index entries in 100-nanosecond units
1221					// Maximum Packet Count             DWORD        32              // maximum packet count for all index entries
1222					// Index Entries Count              DWORD        32              // number of Index Entries structures
1223					// Index Entries                    array of:    variable        //
1224					// * Packet Number                  DWORD        32              // number of the Data Packet associated with this index entry
1225					// * Packet Count                   WORD         16              // number of Data Packets to sent at this index entry
1226
1227					// shortcut
1228					$thisfile_asf['simple_index_object'] = array();
1229					$thisfile_asf_simpleindexobject      = &$thisfile_asf['simple_index_object'];
1230
1231					$SimpleIndexObjectData = $NextObjectDataHeader.$this->fread(56 - 24);
1232					$offset = 24;
1233
1234					$thisfile_asf_simpleindexobject['objectid']                  = $NextObjectGUID;
1235					$thisfile_asf_simpleindexobject['objectid_guid']             = $NextObjectGUIDtext;
1236					$thisfile_asf_simpleindexobject['objectsize']                = $NextObjectSize;
1237
1238					$thisfile_asf_simpleindexobject['fileid']                    =                  substr($SimpleIndexObjectData, $offset, 16);
1239					$offset += 16;
1240					$thisfile_asf_simpleindexobject['fileid_guid']               = $this->BytestringToGUID($thisfile_asf_simpleindexobject['fileid']);
1241					$thisfile_asf_simpleindexobject['index_entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 8));
1242					$offset += 8;
1243					$thisfile_asf_simpleindexobject['maximum_packet_count']      = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1244					$offset += 4;
1245					$thisfile_asf_simpleindexobject['index_entries_count']       = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4));
1246					$offset += 4;
1247
1248					$IndexEntriesData = $SimpleIndexObjectData.$this->fread(6 * $thisfile_asf_simpleindexobject['index_entries_count']);
1249					for ($IndexEntriesCounter = 0; $IndexEntriesCounter < $thisfile_asf_simpleindexobject['index_entries_count']; $IndexEntriesCounter++) {
1250						$thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_number'] = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1251						$offset += 4;
1252						$thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_count']  = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4));
1253						$offset += 2;
1254					}
1255
1256					break;
1257
1258				case GETID3_ASF_Index_Object:
1259					// 6.2 ASF top-level Index Object (optional but recommended when appropriate, 0 or 1)
1260					// Field Name                       Field Type   Size (bits)
1261					// Object ID                        GUID         128             // GUID for the Index Object - GETID3_ASF_Index_Object
1262					// Object Size                      QWORD        64              // Specifies the size, in bytes, of the Index Object, including at least 34 bytes of Index Object header
1263					// Index Entry Time Interval        DWORD        32              // Specifies the time interval between each index entry in ms.
1264					// Index Specifiers Count           WORD         16              // Specifies the number of Index Specifiers structures in this Index Object.
1265					// Index Blocks Count               DWORD        32              // Specifies the number of Index Blocks structures in this Index Object.
1266
1267					// Index Entry Time Interval        DWORD        32              // Specifies the time interval between index entries in milliseconds.  This value cannot be 0.
1268					// Index Specifiers Count           WORD         16              // Specifies the number of entries in the Index Specifiers list.  Valid values are 1 and greater.
1269					// Index Specifiers                 array of:    varies          //
1270					// * Stream Number                  WORD         16              // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127.
1271					// * Index Type                     WORD         16              // Specifies Index Type values as follows:
1272																					//   1 = Nearest Past Data Packet - indexes point to the data packet whose presentation time is closest to the index entry time.
1273																					//   2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire object or first fragment of an object.
1274																					//   3 = Nearest Past Cleanpoint. - indexes point to the closest data packet containing an entire object (or first fragment of an object) that has the Cleanpoint Flag set.
1275																					//   Nearest Past Cleanpoint is the most common type of index.
1276					// Index Entry Count                DWORD        32              // Specifies the number of Index Entries in the block.
1277					// * Block Positions                QWORD        varies          // Specifies a list of byte offsets of the beginnings of the blocks relative to the beginning of the first Data Packet (i.e., the beginning of the Data Object + 50 bytes). The number of entries in this list is specified by the value of the Index Specifiers Count field. The order of those byte offsets is tied to the order in which Index Specifiers are listed.
1278					// * Index Entries                  array of:    varies          //
1279					// * * Offsets                      DWORD        varies          // An offset value of 0xffffffff indicates an invalid offset value
1280
1281					// shortcut
1282					$thisfile_asf['asf_index_object'] = array();
1283					$thisfile_asf_asfindexobject      = &$thisfile_asf['asf_index_object'];
1284
1285					$ASFIndexObjectData = $NextObjectDataHeader.$this->fread(34 - 24);
1286					$offset = 24;
1287
1288					$thisfile_asf_asfindexobject['objectid']                  = $NextObjectGUID;
1289					$thisfile_asf_asfindexobject['objectid_guid']             = $NextObjectGUIDtext;
1290					$thisfile_asf_asfindexobject['objectsize']                = $NextObjectSize;
1291
1292					$thisfile_asf_asfindexobject['entry_time_interval']       = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1293					$offset += 4;
1294					$thisfile_asf_asfindexobject['index_specifiers_count']    = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1295					$offset += 2;
1296					$thisfile_asf_asfindexobject['index_blocks_count']        = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1297					$offset += 4;
1298
1299					$ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1300					for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1301						$IndexSpecifierStreamNumber = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1302						$offset += 2;
1303						$thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['stream_number']   = $IndexSpecifierStreamNumber;
1304						$thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']      = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2));
1305						$offset += 2;
1306						$thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type_text'] = $this->ASFIndexObjectIndexTypeLookup($thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']);
1307					}
1308
1309					$ASFIndexObjectData .= $this->fread(4);
1310					$thisfile_asf_asfindexobject['index_entry_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1311					$offset += 4;
1312
1313					$ASFIndexObjectData .= $this->fread(8 * $thisfile_asf_asfindexobject['index_specifiers_count']);
1314					for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1315						$thisfile_asf_asfindexobject['block_positions'][$IndexSpecifiersCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 8));
1316						$offset += 8;
1317					}
1318
1319					$ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count'] * $thisfile_asf_asfindexobject['index_entry_count']);
1320					for ($IndexEntryCounter = 0; $IndexEntryCounter < $thisfile_asf_asfindexobject['index_entry_count']; $IndexEntryCounter++) {
1321						for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) {
1322							$thisfile_asf_asfindexobject['offsets'][$IndexSpecifiersCounter][$IndexEntryCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4));
1323							$offset += 4;
1324						}
1325					}
1326					break;
1327
1328
1329				default:
1330					// Implementations shall ignore any standard or non-standard object that they do not know how to handle.
1331					if ($this->GUIDname($NextObjectGUIDtext)) {
1332						$this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF body at offset '.($offset - 16 - 8));
1333					} else {
1334						$this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF body at offset '.($this->ftell() - 16 - 8));
1335					}
1336					$this->fseek(($NextObjectSize - 16 - 8), SEEK_CUR);
1337					break;
1338			}
1339		}
1340
1341		if (isset($thisfile_asf_codeclistobject['codec_entries']) && is_array($thisfile_asf_codeclistobject['codec_entries'])) {
1342			foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1343				switch ($streamdata['information']) {
1344					case 'WMV1':
1345					case 'WMV2':
1346					case 'WMV3':
1347					case 'MSS1':
1348					case 'MSS2':
1349					case 'WMVA':
1350					case 'WVC1':
1351					case 'WMVP':
1352					case 'WVP2':
1353						$thisfile_video['dataformat'] = 'wmv';
1354						$info['mime_type'] = 'video/x-ms-wmv';
1355						break;
1356
1357					case 'MP42':
1358					case 'MP43':
1359					case 'MP4S':
1360					case 'mp4s':
1361						$thisfile_video['dataformat'] = 'asf';
1362						$info['mime_type'] = 'video/x-ms-asf';
1363						break;
1364
1365					default:
1366						switch ($streamdata['type_raw']) {
1367							case 1:
1368								if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1369									$thisfile_video['dataformat'] = 'wmv';
1370									if ($info['mime_type'] == 'video/x-ms-asf') {
1371										$info['mime_type'] = 'video/x-ms-wmv';
1372									}
1373								}
1374								break;
1375
1376							case 2:
1377								if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) {
1378									$thisfile_audio['dataformat'] = 'wma';
1379									if ($info['mime_type'] == 'video/x-ms-asf') {
1380										$info['mime_type'] = 'audio/x-ms-wma';
1381									}
1382								}
1383								break;
1384
1385						}
1386						break;
1387				}
1388			}
1389		}
1390
1391		switch (isset($thisfile_audio['codec']) ? $thisfile_audio['codec'] : '') {
1392			case 'MPEG Layer-3':
1393				$thisfile_audio['dataformat'] = 'mp3';
1394				break;
1395
1396			default:
1397				break;
1398		}
1399
1400		if (isset($thisfile_asf_codeclistobject['codec_entries'])) {
1401			foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) {
1402				switch ($streamdata['type_raw']) {
1403
1404					case 1: // video
1405						$thisfile_video['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1406						break;
1407
1408					case 2: // audio
1409						$thisfile_audio['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']);
1410
1411						// AH 2003-10-01
1412						$thisfile_audio['encoder_options'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][0]['description']);
1413
1414						$thisfile_audio['codec']   = $thisfile_audio['encoder'];
1415						break;
1416
1417					default:
1418						$this->warning('Unknown streamtype: [codec_list_object][codec_entries]['.$streamnumber.'][type_raw] == '.$streamdata['type_raw']);
1419						break;
1420
1421				}
1422			}
1423		}
1424
1425		if (isset($info['audio'])) {
1426			$thisfile_audio['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1427			$thisfile_audio['dataformat']         = (!empty($thisfile_audio['dataformat'])        ? $thisfile_audio['dataformat']         : 'asf');
1428		}
1429		if (!empty($thisfile_video['dataformat'])) {
1430			$thisfile_video['lossless']           = (isset($thisfile_audio['lossless'])           ? $thisfile_audio['lossless']           : false);
1431			$thisfile_video['pixel_aspect_ratio'] = (isset($thisfile_audio['pixel_aspect_ratio']) ? $thisfile_audio['pixel_aspect_ratio'] : (float) 1);
1432			$thisfile_video['dataformat']         = (!empty($thisfile_video['dataformat'])        ? $thisfile_video['dataformat']         : 'asf');
1433		}
1434		if (!empty($thisfile_video['streams'])) {
1435			$thisfile_video['resolution_x'] = 0;
1436			$thisfile_video['resolution_y'] = 0;
1437			foreach ($thisfile_video['streams'] as $key => $valuearray) {
1438				if (($valuearray['resolution_x'] > $thisfile_video['resolution_x']) || ($valuearray['resolution_y'] > $thisfile_video['resolution_y'])) {
1439					$thisfile_video['resolution_x'] = $valuearray['resolution_x'];
1440					$thisfile_video['resolution_y'] = $valuearray['resolution_y'];
1441				}
1442			}
1443		}
1444		$info['bitrate'] = (isset($thisfile_audio['bitrate']) ? $thisfile_audio['bitrate'] : 0) + (isset($thisfile_video['bitrate']) ? $thisfile_video['bitrate'] : 0);
1445
1446		if ((!isset($info['playtime_seconds']) || ($info['playtime_seconds'] <= 0)) && ($info['bitrate'] > 0)) {
1447			$info['playtime_seconds'] = ($info['filesize'] - $info['avdataoffset']) / ($info['bitrate'] / 8);
1448		}
1449
1450		return true;
1451	}
1452
1453	/**
1454	 * @param int $CodecListType
1455	 *
1456	 * @return string
1457	 */
1458	public static function codecListObjectTypeLookup($CodecListType) {
1459		static $lookup = array(
1460			0x0001 => 'Video Codec',
1461			0x0002 => 'Audio Codec',
1462			0xFFFF => 'Unknown Codec'
1463		);
1464
1465		return (isset($lookup[$CodecListType]) ? $lookup[$CodecListType] : 'Invalid Codec Type');
1466	}
1467
1468	/**
1469	 * @return array
1470	 */
1471	public static function KnownGUIDs() {
1472		static $GUIDarray = array(
1473			'GETID3_ASF_Extended_Stream_Properties_Object'   => '14E6A5CB-C672-4332-8399-A96952065B5A',
1474			'GETID3_ASF_Padding_Object'                      => '1806D474-CADF-4509-A4BA-9AABCB96AAE8',
1475			'GETID3_ASF_Payload_Ext_Syst_Pixel_Aspect_Ratio' => '1B1EE554-F9EA-4BC8-821A-376B74E4C4B8',
1476			'GETID3_ASF_Script_Command_Object'               => '1EFB1A30-0B62-11D0-A39B-00A0C90348F6',
1477			'GETID3_ASF_No_Error_Correction'                 => '20FB5700-5B55-11CF-A8FD-00805F5C442B',
1478			'GETID3_ASF_Content_Branding_Object'             => '2211B3FA-BD23-11D2-B4B7-00A0C955FC6E',
1479			'GETID3_ASF_Content_Encryption_Object'           => '2211B3FB-BD23-11D2-B4B7-00A0C955FC6E',
1480			'GETID3_ASF_Digital_Signature_Object'            => '2211B3FC-BD23-11D2-B4B7-00A0C955FC6E',
1481			'GETID3_ASF_Extended_Content_Encryption_Object'  => '298AE614-2622-4C17-B935-DAE07EE9289C',
1482			'GETID3_ASF_Simple_Index_Object'                 => '33000890-E5B1-11CF-89F4-00A0C90349CB',
1483			'GETID3_ASF_Degradable_JPEG_Media'               => '35907DE0-E415-11CF-A917-00805F5C442B',
1484			'GETID3_ASF_Payload_Extension_System_Timecode'   => '399595EC-8667-4E2D-8FDB-98814CE76C1E',
1485			'GETID3_ASF_Binary_Media'                        => '3AFB65E2-47EF-40F2-AC2C-70A90D71D343',
1486			'GETID3_ASF_Timecode_Index_Object'               => '3CB73FD0-0C4A-4803-953D-EDF7B6228F0C',
1487			'GETID3_ASF_Metadata_Library_Object'             => '44231C94-9498-49D1-A141-1D134E457054',
1488			'GETID3_ASF_Reserved_3'                          => '4B1ACBE3-100B-11D0-A39B-00A0C90348F6',
1489			'GETID3_ASF_Reserved_4'                          => '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB',
1490			'GETID3_ASF_Command_Media'                       => '59DACFC0-59E6-11D0-A3AC-00A0C90348F6',
1491			'GETID3_ASF_Header_Extension_Object'             => '5FBF03B5-A92E-11CF-8EE3-00C00C205365',
1492			'GETID3_ASF_Media_Object_Index_Parameters_Obj'   => '6B203BAD-3F11-4E84-ACA8-D7613DE2CFA7',
1493			'GETID3_ASF_Header_Object'                       => '75B22630-668E-11CF-A6D9-00AA0062CE6C',
1494			'GETID3_ASF_Content_Description_Object'          => '75B22633-668E-11CF-A6D9-00AA0062CE6C',
1495			'GETID3_ASF_Error_Correction_Object'             => '75B22635-668E-11CF-A6D9-00AA0062CE6C',
1496			'GETID3_ASF_Data_Object'                         => '75B22636-668E-11CF-A6D9-00AA0062CE6C',
1497			'GETID3_ASF_Web_Stream_Media_Subtype'            => '776257D4-C627-41CB-8F81-7AC7FF1C40CC',
1498			'GETID3_ASF_Stream_Bitrate_Properties_Object'    => '7BF875CE-468D-11D1-8D82-006097C9A2B2',
1499			'GETID3_ASF_Language_List_Object'                => '7C4346A9-EFE0-4BFC-B229-393EDE415C85',
1500			'GETID3_ASF_Codec_List_Object'                   => '86D15240-311D-11D0-A3A4-00A0C90348F6',
1501			'GETID3_ASF_Reserved_2'                          => '86D15241-311D-11D0-A3A4-00A0C90348F6',
1502			'GETID3_ASF_File_Properties_Object'              => '8CABDCA1-A947-11CF-8EE4-00C00C205365',
1503			'GETID3_ASF_File_Transfer_Media'                 => '91BD222C-F21C-497A-8B6D-5AA86BFC0185',
1504			'GETID3_ASF_Old_RTP_Extension_Data'              => '96800C63-4C94-11D1-837B-0080C7A37F95',
1505			'GETID3_ASF_Advanced_Mutual_Exclusion_Object'    => 'A08649CF-4775-4670-8A16-6E35357566CD',
1506			'GETID3_ASF_Bandwidth_Sharing_Object'            => 'A69609E6-517B-11D2-B6AF-00C04FD908E9',
1507			'GETID3_ASF_Reserved_1'                          => 'ABD3D211-A9BA-11cf-8EE6-00C00C205365',
1508			'GETID3_ASF_Bandwidth_Sharing_Exclusive'         => 'AF6060AA-5197-11D2-B6AF-00C04FD908E9',
1509			'GETID3_ASF_Bandwidth_Sharing_Partial'           => 'AF6060AB-5197-11D2-B6AF-00C04FD908E9',
1510			'GETID3_ASF_JFIF_Media'                          => 'B61BE100-5B4E-11CF-A8FD-00805F5C442B',
1511			'GETID3_ASF_Stream_Properties_Object'            => 'B7DC0791-A9B7-11CF-8EE6-00C00C205365',
1512			'GETID3_ASF_Video_Media'                         => 'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B',
1513			'GETID3_ASF_Audio_Spread'                        => 'BFC3CD50-618F-11CF-8BB2-00AA00B4E220',
1514			'GETID3_ASF_Metadata_Object'                     => 'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA',
1515			'GETID3_ASF_Payload_Ext_Syst_Sample_Duration'    => 'C6BD9450-867F-4907-83A3-C77921B733AD',
1516			'GETID3_ASF_Group_Mutual_Exclusion_Object'       => 'D1465A40-5A79-4338-B71B-E36B8FD6C249',
1517			'GETID3_ASF_Extended_Content_Description_Object' => 'D2D0A440-E307-11D2-97F0-00A0C95EA850',
1518			'GETID3_ASF_Stream_Prioritization_Object'        => 'D4FED15B-88D3-454F-81F0-ED5C45999E24',
1519			'GETID3_ASF_Payload_Ext_System_Content_Type'     => 'D590DC20-07BC-436C-9CF7-F3BBFBF1A4DC',
1520			'GETID3_ASF_Old_File_Properties_Object'          => 'D6E229D0-35DA-11D1-9034-00A0C90349BE',
1521			'GETID3_ASF_Old_ASF_Header_Object'               => 'D6E229D1-35DA-11D1-9034-00A0C90349BE',
1522			'GETID3_ASF_Old_ASF_Data_Object'                 => 'D6E229D2-35DA-11D1-9034-00A0C90349BE',
1523			'GETID3_ASF_Index_Object'                        => 'D6E229D3-35DA-11D1-9034-00A0C90349BE',
1524			'GETID3_ASF_Old_Stream_Properties_Object'        => 'D6E229D4-35DA-11D1-9034-00A0C90349BE',
1525			'GETID3_ASF_Old_Content_Description_Object'      => 'D6E229D5-35DA-11D1-9034-00A0C90349BE',
1526			'GETID3_ASF_Old_Script_Command_Object'           => 'D6E229D6-35DA-11D1-9034-00A0C90349BE',
1527			'GETID3_ASF_Old_Marker_Object'                   => 'D6E229D7-35DA-11D1-9034-00A0C90349BE',
1528			'GETID3_ASF_Old_Component_Download_Object'       => 'D6E229D8-35DA-11D1-9034-00A0C90349BE',
1529			'GETID3_ASF_Old_Stream_Group_Object'             => 'D6E229D9-35DA-11D1-9034-00A0C90349BE',
1530			'GETID3_ASF_Old_Scalable_Object'                 => 'D6E229DA-35DA-11D1-9034-00A0C90349BE',
1531			'GETID3_ASF_Old_Prioritization_Object'           => 'D6E229DB-35DA-11D1-9034-00A0C90349BE',
1532			'GETID3_ASF_Bitrate_Mutual_Exclusion_Object'     => 'D6E229DC-35DA-11D1-9034-00A0C90349BE',
1533			'GETID3_ASF_Old_Inter_Media_Dependency_Object'   => 'D6E229DD-35DA-11D1-9034-00A0C90349BE',
1534			'GETID3_ASF_Old_Rating_Object'                   => 'D6E229DE-35DA-11D1-9034-00A0C90349BE',
1535			'GETID3_ASF_Index_Parameters_Object'             => 'D6E229DF-35DA-11D1-9034-00A0C90349BE',
1536			'GETID3_ASF_Old_Color_Table_Object'              => 'D6E229E0-35DA-11D1-9034-00A0C90349BE',
1537			'GETID3_ASF_Old_Language_List_Object'            => 'D6E229E1-35DA-11D1-9034-00A0C90349BE',
1538			'GETID3_ASF_Old_Audio_Media'                     => 'D6E229E2-35DA-11D1-9034-00A0C90349BE',
1539			'GETID3_ASF_Old_Video_Media'                     => 'D6E229E3-35DA-11D1-9034-00A0C90349BE',
1540			'GETID3_ASF_Old_Image_Media'                     => 'D6E229E4-35DA-11D1-9034-00A0C90349BE',
1541			'GETID3_ASF_Old_Timecode_Media'                  => 'D6E229E5-35DA-11D1-9034-00A0C90349BE',
1542			'GETID3_ASF_Old_Text_Media'                      => 'D6E229E6-35DA-11D1-9034-00A0C90349BE',
1543			'GETID3_ASF_Old_MIDI_Media'                      => 'D6E229E7-35DA-11D1-9034-00A0C90349BE',
1544			'GETID3_ASF_Old_Command_Media'                   => 'D6E229E8-35DA-11D1-9034-00A0C90349BE',
1545			'GETID3_ASF_Old_No_Error_Concealment'            => 'D6E229EA-35DA-11D1-9034-00A0C90349BE',
1546			'GETID3_ASF_Old_Scrambled_Audio'                 => 'D6E229EB-35DA-11D1-9034-00A0C90349BE',
1547			'GETID3_ASF_Old_No_Color_Table'                  => 'D6E229EC-35DA-11D1-9034-00A0C90349BE',
1548			'GETID3_ASF_Old_SMPTE_Time'                      => 'D6E229ED-35DA-11D1-9034-00A0C90349BE',
1549			'GETID3_ASF_Old_ASCII_Text'                      => 'D6E229EE-35DA-11D1-9034-00A0C90349BE',
1550			'GETID3_ASF_Old_Unicode_Text'                    => 'D6E229EF-35DA-11D1-9034-00A0C90349BE',
1551			'GETID3_ASF_Old_HTML_Text'                       => 'D6E229F0-35DA-11D1-9034-00A0C90349BE',
1552			'GETID3_ASF_Old_URL_Command'                     => 'D6E229F1-35DA-11D1-9034-00A0C90349BE',
1553			'GETID3_ASF_Old_Filename_Command'                => 'D6E229F2-35DA-11D1-9034-00A0C90349BE',
1554			'GETID3_ASF_Old_ACM_Codec'                       => 'D6E229F3-35DA-11D1-9034-00A0C90349BE',
1555			'GETID3_ASF_Old_VCM_Codec'                       => 'D6E229F4-35DA-11D1-9034-00A0C90349BE',
1556			'GETID3_ASF_Old_QuickTime_Codec'                 => 'D6E229F5-35DA-11D1-9034-00A0C90349BE',
1557			'GETID3_ASF_Old_DirectShow_Transform_Filter'     => 'D6E229F6-35DA-11D1-9034-00A0C90349BE',
1558			'GETID3_ASF_Old_DirectShow_Rendering_Filter'     => 'D6E229F7-35DA-11D1-9034-00A0C90349BE',
1559			'GETID3_ASF_Old_No_Enhancement'                  => 'D6E229F8-35DA-11D1-9034-00A0C90349BE',
1560			'GETID3_ASF_Old_Unknown_Enhancement_Type'        => 'D6E229F9-35DA-11D1-9034-00A0C90349BE',
1561			'GETID3_ASF_Old_Temporal_Enhancement'            => 'D6E229FA-35DA-11D1-9034-00A0C90349BE',
1562			'GETID3_ASF_Old_Spatial_Enhancement'             => 'D6E229FB-35DA-11D1-9034-00A0C90349BE',
1563			'GETID3_ASF_Old_Quality_Enhancement'             => 'D6E229FC-35DA-11D1-9034-00A0C90349BE',
1564			'GETID3_ASF_Old_Number_of_Channels_Enhancement'  => 'D6E229FD-35DA-11D1-9034-00A0C90349BE',
1565			'GETID3_ASF_Old_Frequency_Response_Enhancement'  => 'D6E229FE-35DA-11D1-9034-00A0C90349BE',
1566			'GETID3_ASF_Old_Media_Object'                    => 'D6E229FF-35DA-11D1-9034-00A0C90349BE',
1567			'GETID3_ASF_Mutex_Language'                      => 'D6E22A00-35DA-11D1-9034-00A0C90349BE',
1568			'GETID3_ASF_Mutex_Bitrate'                       => 'D6E22A01-35DA-11D1-9034-00A0C90349BE',
1569			'GETID3_ASF_Mutex_Unknown'                       => 'D6E22A02-35DA-11D1-9034-00A0C90349BE',
1570			'GETID3_ASF_Old_ASF_Placeholder_Object'          => 'D6E22A0E-35DA-11D1-9034-00A0C90349BE',
1571			'GETID3_ASF_Old_Data_Unit_Extension_Object'      => 'D6E22A0F-35DA-11D1-9034-00A0C90349BE',
1572			'GETID3_ASF_Web_Stream_Format'                   => 'DA1E6B13-8359-4050-B398-388E965BF00C',
1573			'GETID3_ASF_Payload_Ext_System_File_Name'        => 'E165EC0E-19ED-45D7-B4A7-25CBD1E28E9B',
1574			'GETID3_ASF_Marker_Object'                       => 'F487CD01-A951-11CF-8EE6-00C00C205365',
1575			'GETID3_ASF_Timecode_Index_Parameters_Object'    => 'F55E496D-9797-4B5D-8C8B-604DFE9BFB24',
1576			'GETID3_ASF_Audio_Media'                         => 'F8699E40-5B4D-11CF-A8FD-00805F5C442B',
1577			'GETID3_ASF_Media_Object_Index_Object'           => 'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C',
1578			'GETID3_ASF_Alt_Extended_Content_Encryption_Obj' => 'FF889EF1-ADEE-40DA-9E71-98704BB928CE',
1579			'GETID3_ASF_Index_Placeholder_Object'            => 'D9AADE20-7C17-4F9C-BC28-8555DD98E2A2', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1580			'GETID3_ASF_Compatibility_Object'                => '26F18B5D-4584-47EC-9F5F-0E651F0452C9', // http://cpan.uwinnipeg.ca/htdocs/Audio-WMA/Audio/WMA.pm.html
1581		);
1582		return $GUIDarray;
1583	}
1584
1585	/**
1586	 * @param string $GUIDstring
1587	 *
1588	 * @return string|false
1589	 */
1590	public static function GUIDname($GUIDstring) {
1591		static $GUIDarray = array();
1592		if (empty($GUIDarray)) {
1593			$GUIDarray = self::KnownGUIDs();
1594		}
1595		return array_search($GUIDstring, $GUIDarray);
1596	}
1597
1598	/**
1599	 * @param int $id
1600	 *
1601	 * @return string
1602	 */
1603	public static function ASFIndexObjectIndexTypeLookup($id) {
1604		static $ASFIndexObjectIndexTypeLookup = array();
1605		if (empty($ASFIndexObjectIndexTypeLookup)) {
1606			$ASFIndexObjectIndexTypeLookup[1] = 'Nearest Past Data Packet';
1607			$ASFIndexObjectIndexTypeLookup[2] = 'Nearest Past Media Object';
1608			$ASFIndexObjectIndexTypeLookup[3] = 'Nearest Past Cleanpoint';
1609		}
1610		return (isset($ASFIndexObjectIndexTypeLookup[$id]) ? $ASFIndexObjectIndexTypeLookup[$id] : 'invalid');
1611	}
1612
1613	/**
1614	 * @param string $GUIDstring
1615	 *
1616	 * @return string
1617	 */
1618	public static function GUIDtoBytestring($GUIDstring) {
1619		// Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way:
1620		// first 4 bytes are in little-endian order
1621		// next 2 bytes are appended in little-endian order
1622		// next 2 bytes are appended in little-endian order
1623		// next 2 bytes are appended in big-endian order
1624		// next 6 bytes are appended in big-endian order
1625
1626		// AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string:
1627		// $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp
1628
1629		$hexbytecharstring  = chr(hexdec(substr($GUIDstring,  6, 2)));
1630		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  4, 2)));
1631		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  2, 2)));
1632		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  0, 2)));
1633
1634		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 11, 2)));
1635		$hexbytecharstring .= chr(hexdec(substr($GUIDstring,  9, 2)));
1636
1637		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 16, 2)));
1638		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 14, 2)));
1639
1640		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 19, 2)));
1641		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 21, 2)));
1642
1643		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 24, 2)));
1644		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 26, 2)));
1645		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 28, 2)));
1646		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 30, 2)));
1647		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 32, 2)));
1648		$hexbytecharstring .= chr(hexdec(substr($GUIDstring, 34, 2)));
1649
1650		return $hexbytecharstring;
1651	}
1652
1653	/**
1654	 * @param string $Bytestring
1655	 *
1656	 * @return string
1657	 */
1658	public static function BytestringToGUID($Bytestring) {
1659		$GUIDstring  = str_pad(dechex(ord($Bytestring[3])),  2, '0', STR_PAD_LEFT);
1660		$GUIDstring .= str_pad(dechex(ord($Bytestring[2])),  2, '0', STR_PAD_LEFT);
1661		$GUIDstring .= str_pad(dechex(ord($Bytestring[1])),  2, '0', STR_PAD_LEFT);
1662		$GUIDstring .= str_pad(dechex(ord($Bytestring[0])),  2, '0', STR_PAD_LEFT);
1663		$GUIDstring .= '-';
1664		$GUIDstring .= str_pad(dechex(ord($Bytestring[5])),  2, '0', STR_PAD_LEFT);
1665		$GUIDstring .= str_pad(dechex(ord($Bytestring[4])),  2, '0', STR_PAD_LEFT);
1666		$GUIDstring .= '-';
1667		$GUIDstring .= str_pad(dechex(ord($Bytestring[7])),  2, '0', STR_PAD_LEFT);
1668		$GUIDstring .= str_pad(dechex(ord($Bytestring[6])),  2, '0', STR_PAD_LEFT);
1669		$GUIDstring .= '-';
1670		$GUIDstring .= str_pad(dechex(ord($Bytestring[8])),  2, '0', STR_PAD_LEFT);
1671		$GUIDstring .= str_pad(dechex(ord($Bytestring[9])),  2, '0', STR_PAD_LEFT);
1672		$GUIDstring .= '-';
1673		$GUIDstring .= str_pad(dechex(ord($Bytestring[10])), 2, '0', STR_PAD_LEFT);
1674		$GUIDstring .= str_pad(dechex(ord($Bytestring[11])), 2, '0', STR_PAD_LEFT);
1675		$GUIDstring .= str_pad(dechex(ord($Bytestring[12])), 2, '0', STR_PAD_LEFT);
1676		$GUIDstring .= str_pad(dechex(ord($Bytestring[13])), 2, '0', STR_PAD_LEFT);
1677		$GUIDstring .= str_pad(dechex(ord($Bytestring[14])), 2, '0', STR_PAD_LEFT);
1678		$GUIDstring .= str_pad(dechex(ord($Bytestring[15])), 2, '0', STR_PAD_LEFT);
1679
1680		return strtoupper($GUIDstring);
1681	}
1682
1683	/**
1684	 * @param int  $FILETIME
1685	 * @param bool $round
1686	 *
1687	 * @return float|int
1688	 */
1689	public static function FILETIMEtoUNIXtime($FILETIME, $round=true) {
1690		// FILETIME is a 64-bit unsigned integer representing
1691		// the number of 100-nanosecond intervals since January 1, 1601
1692		// UNIX timestamp is number of seconds since January 1, 1970
1693		// 116444736000000000 = 10000000 * 60 * 60 * 24 * 365 * 369 + 89 leap days
1694		if ($round) {
1695			return intval(round(($FILETIME - 116444736000000000) / 10000000));
1696		}
1697		return ($FILETIME - 116444736000000000) / 10000000;
1698	}
1699
1700	/**
1701	 * @param int $WMpictureType
1702	 *
1703	 * @return string
1704	 */
1705	public static function WMpictureTypeLookup($WMpictureType) {
1706		static $lookup = null;
1707		if ($lookup === null) {
1708			$lookup = array(
1709				0x03 => 'Front Cover',
1710				0x04 => 'Back Cover',
1711				0x00 => 'User Defined',
1712				0x05 => 'Leaflet Page',
1713				0x06 => 'Media Label',
1714				0x07 => 'Lead Artist',
1715				0x08 => 'Artist',
1716				0x09 => 'Conductor',
1717				0x0A => 'Band',
1718				0x0B => 'Composer',
1719				0x0C => 'Lyricist',
1720				0x0D => 'Recording Location',
1721				0x0E => 'During Recording',
1722				0x0F => 'During Performance',
1723				0x10 => 'Video Screen Capture',
1724				0x12 => 'Illustration',
1725				0x13 => 'Band Logotype',
1726				0x14 => 'Publisher Logotype'
1727			);
1728			$lookup = array_map(function($str) {
1729				return getid3_lib::iconv_fallback('UTF-8', 'UTF-16LE', $str);
1730			}, $lookup);
1731		}
1732
1733		return (isset($lookup[$WMpictureType]) ? $lookup[$WMpictureType] : '');
1734	}
1735
1736	/**
1737	 * @param string $asf_header_extension_object_data
1738	 * @param int    $unhandled_sections
1739	 *
1740	 * @return array
1741	 */
1742	public function HeaderExtensionObjectDataParse(&$asf_header_extension_object_data, &$unhandled_sections) {
1743		// http://msdn.microsoft.com/en-us/library/bb643323.aspx
1744
1745		$offset = 0;
1746		$objectOffset = 0;
1747		$HeaderExtensionObjectParsed = array();
1748		while ($objectOffset < strlen($asf_header_extension_object_data)) {
1749			$offset = $objectOffset;
1750			$thisObject = array();
1751
1752			$thisObject['guid']                              =                              substr($asf_header_extension_object_data, $offset, 16);
1753			$offset += 16;
1754			$thisObject['guid_text'] = $this->BytestringToGUID($thisObject['guid']);
1755			$thisObject['guid_name'] = $this->GUIDname($thisObject['guid_text']);
1756
1757			$thisObject['size']                              = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1758			$offset += 8;
1759			if ($thisObject['size'] <= 0) {
1760				break;
1761			}
1762
1763			switch ($thisObject['guid']) {
1764				case GETID3_ASF_Extended_Stream_Properties_Object:
1765					$thisObject['start_time']                        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1766					$offset += 8;
1767					$thisObject['start_time_unix']                   = $this->FILETIMEtoUNIXtime($thisObject['start_time']);
1768
1769					$thisObject['end_time']                          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  8));
1770					$offset += 8;
1771					$thisObject['end_time_unix']                     = $this->FILETIMEtoUNIXtime($thisObject['end_time']);
1772
1773					$thisObject['data_bitrate']                      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1774					$offset += 4;
1775
1776					$thisObject['buffer_size']                       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1777					$offset += 4;
1778
1779					$thisObject['initial_buffer_fullness']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1780					$offset += 4;
1781
1782					$thisObject['alternate_data_bitrate']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1783					$offset += 4;
1784
1785					$thisObject['alternate_buffer_size']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1786					$offset += 4;
1787
1788					$thisObject['alternate_initial_buffer_fullness'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1789					$offset += 4;
1790
1791					$thisObject['maximum_object_size']               = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1792					$offset += 4;
1793
1794					$thisObject['flags_raw']                         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1795					$offset += 4;
1796					$thisObject['flags']['reliable']                = (bool) $thisObject['flags_raw'] & 0x00000001;
1797					$thisObject['flags']['seekable']                = (bool) $thisObject['flags_raw'] & 0x00000002;
1798					$thisObject['flags']['no_cleanpoints']          = (bool) $thisObject['flags_raw'] & 0x00000004;
1799					$thisObject['flags']['resend_live_cleanpoints'] = (bool) $thisObject['flags_raw'] & 0x00000008;
1800
1801					$thisObject['stream_number']                     = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1802					$offset += 2;
1803
1804					$thisObject['stream_language_id_index']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1805					$offset += 2;
1806
1807					$thisObject['average_time_per_frame']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1808					$offset += 4;
1809
1810					$thisObject['stream_name_count']                 = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1811					$offset += 2;
1812
1813					$thisObject['payload_extension_system_count']    = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1814					$offset += 2;
1815
1816					for ($i = 0; $i < $thisObject['stream_name_count']; $i++) {
1817						$streamName = array();
1818
1819						$streamName['language_id_index']             = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1820						$offset += 2;
1821
1822						$streamName['stream_name_length']            = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1823						$offset += 2;
1824
1825						$streamName['stream_name']                   = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $streamName['stream_name_length']));
1826						$offset += $streamName['stream_name_length'];
1827
1828						$thisObject['stream_names'][$i] = $streamName;
1829					}
1830
1831					for ($i = 0; $i < $thisObject['payload_extension_system_count']; $i++) {
1832						$payloadExtensionSystem = array();
1833
1834						$payloadExtensionSystem['extension_system_id']   =                              substr($asf_header_extension_object_data, $offset, 16);
1835						$offset += 16;
1836						$payloadExtensionSystem['extension_system_id_text'] = $this->BytestringToGUID($payloadExtensionSystem['extension_system_id']);
1837
1838						$payloadExtensionSystem['extension_system_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1839						$offset += 2;
1840						if ($payloadExtensionSystem['extension_system_size'] <= 0) {
1841							break 2;
1842						}
1843
1844						$payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1845						$offset += 4;
1846
1847						$payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  $payloadExtensionSystem['extension_system_info_length']));
1848						$offset += $payloadExtensionSystem['extension_system_info_length'];
1849
1850						$thisObject['payload_extension_systems'][$i] = $payloadExtensionSystem;
1851					}
1852
1853					break;
1854
1855				case GETID3_ASF_Padding_Object:
1856					// padding, skip it
1857					break;
1858
1859				case GETID3_ASF_Metadata_Object:
1860					$thisObject['description_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1861					$offset += 2;
1862
1863					for ($i = 0; $i < $thisObject['description_record_counts']; $i++) {
1864						$descriptionRecord = array();
1865
1866						$descriptionRecord['reserved_1']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2)); // must be zero
1867						$offset += 2;
1868
1869						$descriptionRecord['stream_number']      = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1870						$offset += 2;
1871
1872						$descriptionRecord['name_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1873						$offset += 2;
1874
1875						$descriptionRecord['data_type']          = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1876						$offset += 2;
1877						$descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1878
1879						$descriptionRecord['data_length']        = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1880						$offset += 4;
1881
1882						$descriptionRecord['name']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1883						$offset += $descriptionRecord['name_length'];
1884
1885						$descriptionRecord['data']               =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1886						$offset += $descriptionRecord['data_length'];
1887						switch ($descriptionRecord['data_type']) {
1888							case 0x0000: // Unicode string
1889								break;
1890
1891							case 0x0001: // BYTE array
1892								// do nothing
1893								break;
1894
1895							case 0x0002: // BOOL
1896								$descriptionRecord['data'] = (bool) getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1897								break;
1898
1899							case 0x0003: // DWORD
1900							case 0x0004: // QWORD
1901							case 0x0005: // WORD
1902								$descriptionRecord['data'] = getid3_lib::LittleEndian2Int($descriptionRecord['data']);
1903								break;
1904
1905							case 0x0006: // GUID
1906								$descriptionRecord['data_text'] = $this->BytestringToGUID($descriptionRecord['data']);
1907								break;
1908						}
1909
1910						$thisObject['description_record'][$i] = $descriptionRecord;
1911					}
1912					break;
1913
1914				case GETID3_ASF_Language_List_Object:
1915					$thisObject['language_id_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1916					$offset += 2;
1917
1918					for ($i = 0; $i < $thisObject['language_id_record_counts']; $i++) {
1919						$languageIDrecord = array();
1920
1921						$languageIDrecord['language_id_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  1));
1922						$offset += 1;
1923
1924						$languageIDrecord['language_id']                =                              substr($asf_header_extension_object_data, $offset,  $languageIDrecord['language_id_length']);
1925						$offset += $languageIDrecord['language_id_length'];
1926
1927						$thisObject['language_id_record'][$i] = $languageIDrecord;
1928					}
1929					break;
1930
1931				case GETID3_ASF_Metadata_Library_Object:
1932					$thisObject['description_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1933					$offset += 2;
1934
1935					for ($i = 0; $i < $thisObject['description_records_count']; $i++) {
1936						$descriptionRecord = array();
1937
1938						$descriptionRecord['language_list_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1939						$offset += 2;
1940
1941						$descriptionRecord['stream_number']       = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1942						$offset += 2;
1943
1944						$descriptionRecord['name_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1945						$offset += 2;
1946
1947						$descriptionRecord['data_type']           = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  2));
1948						$offset += 2;
1949						$descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']);
1950
1951						$descriptionRecord['data_length']         = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset,  4));
1952						$offset += 4;
1953
1954						$descriptionRecord['name']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['name_length']);
1955						$offset += $descriptionRecord['name_length'];
1956
1957						$descriptionRecord['data']                =                              substr($asf_header_extension_object_data, $offset,  $descriptionRecord['data_length']);
1958						$offset += $descriptionRecord['data_length'];
1959
1960						if (preg_match('#^WM/Picture$#', str_replace("\x00", '', trim($descriptionRecord['name'])))) {
1961							$WMpicture = $this->ASF_WMpicture($descriptionRecord['data']);
1962							foreach ($WMpicture as $key => $value) {
1963								$descriptionRecord['data'] = $WMpicture;
1964							}
1965							unset($WMpicture);
1966						}
1967
1968						$thisObject['description_record'][$i] = $descriptionRecord;
1969					}
1970					break;
1971
1972				default:
1973					$unhandled_sections++;
1974					if ($this->GUIDname($thisObject['guid_text'])) {
1975						$this->warning('unhandled Header Extension Object GUID "'.$this->GUIDname($thisObject['guid_text']).'" {'.$thisObject['guid_text'].'} at offset '.($offset - 16 - 8));
1976					} else {
1977						$this->warning('unknown Header Extension Object GUID {'.$thisObject['guid_text'].'} in at offset '.($offset - 16 - 8));
1978					}
1979					break;
1980			}
1981			$HeaderExtensionObjectParsed[] = $thisObject;
1982
1983			$objectOffset += $thisObject['size'];
1984		}
1985		return $HeaderExtensionObjectParsed;
1986	}
1987
1988	/**
1989	 * @param int $id
1990	 *
1991	 * @return string
1992	 */
1993	public static function metadataLibraryObjectDataTypeLookup($id) {
1994		static $lookup = array(
1995			0x0000 => 'Unicode string', // The data consists of a sequence of Unicode characters
1996			0x0001 => 'BYTE array',     // The type of the data is implementation-specific
1997			0x0002 => 'BOOL',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer. Only 0x0000 or 0x0001 are permitted values
1998			0x0003 => 'DWORD',          // The data is 4 bytes long and should be interpreted as a 32-bit unsigned integer
1999			0x0004 => 'QWORD',          // The data is 8 bytes long and should be interpreted as a 64-bit unsigned integer
2000			0x0005 => 'WORD',           // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer
2001			0x0006 => 'GUID',           // The data is 16 bytes long and should be interpreted as a 128-bit GUID
2002		);
2003		return (isset($lookup[$id]) ? $lookup[$id] : 'invalid');
2004	}
2005
2006	/**
2007	 * @param string $data
2008	 *
2009	 * @return array
2010	 */
2011	public function ASF_WMpicture(&$data) {
2012		//typedef struct _WMPicture{
2013		//  LPWSTR  pwszMIMEType;
2014		//  BYTE  bPictureType;
2015		//  LPWSTR  pwszDescription;
2016		//  DWORD  dwDataLen;
2017		//  BYTE*  pbData;
2018		//} WM_PICTURE;
2019
2020		$WMpicture = array();
2021
2022		$offset = 0;
2023		$WMpicture['image_type_id'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 1));
2024		$offset += 1;
2025		$WMpicture['image_type']    = self::WMpictureTypeLookup($WMpicture['image_type_id']);
2026		$WMpicture['image_size']    = getid3_lib::LittleEndian2Int(substr($data, $offset, 4));
2027		$offset += 4;
2028
2029		$WMpicture['image_mime'] = '';
2030		do {
2031			$next_byte_pair = substr($data, $offset, 2);
2032			$offset += 2;
2033			$WMpicture['image_mime'] .= $next_byte_pair;
2034		} while ($next_byte_pair !== "\x00\x00");
2035
2036		$WMpicture['image_description'] = '';
2037		do {
2038			$next_byte_pair = substr($data, $offset, 2);
2039			$offset += 2;
2040			$WMpicture['image_description'] .= $next_byte_pair;
2041		} while ($next_byte_pair !== "\x00\x00");
2042
2043		$WMpicture['dataoffset'] = $offset;
2044		$WMpicture['data'] = substr($data, $offset);
2045
2046		$imageinfo = array();
2047		$WMpicture['image_mime'] = '';
2048		$imagechunkcheck = getid3_lib::GetDataImageSize($WMpicture['data'], $imageinfo);
2049		unset($imageinfo);
2050		if (!empty($imagechunkcheck)) {
2051			$WMpicture['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
2052		}
2053		if (!isset($this->getid3->info['asf']['comments']['picture'])) {
2054			$this->getid3->info['asf']['comments']['picture'] = array();
2055		}
2056		$this->getid3->info['asf']['comments']['picture'][] = array('data'=>$WMpicture['data'], 'image_mime'=>$WMpicture['image_mime']);
2057
2058		return $WMpicture;
2059	}
2060
2061	/**
2062	 * Remove terminator 00 00 and convert UTF-16LE to Latin-1.
2063	 *
2064	 * @param string $string
2065	 *
2066	 * @return string
2067	 */
2068	public static function TrimConvert($string) {
2069		return trim(getid3_lib::iconv_fallback('UTF-16LE', 'ISO-8859-1', self::TrimTerm($string)), ' ');
2070	}
2071
2072	/**
2073	 * Remove terminator 00 00.
2074	 *
2075	 * @param string $string
2076	 *
2077	 * @return string
2078	 */
2079	public static function TrimTerm($string) {
2080		// remove terminator, only if present (it should be, but...)
2081		if (substr($string, -2) === "\x00\x00") {
2082			$string = substr($string, 0, -2);
2083		}
2084		return $string;
2085	}
2086
2087}
2088