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/application/libraries/getid3/module.audio-video.asf.php

https://github.com/libis/Flandrica
PHP | 1862 lines | 1154 code | 392 blank | 316 comment | 112 complexity | b542342119f02f24fa48a7bb09994f00 MD5 | raw file
Possible License(s): GPL-3.0, LGPL-2.1, Apache-2.0 
    

  1. <?php
    2. 

  2. // +----------------------------------------------------------------------+
    3. 

  3. // | PHP version 5                                                        |
    4. 

  4. // +----------------------------------------------------------------------+
    5. 

  5. // | Copyright (c) 2002-2009 James Heinrich, Allan Hansen                 |
    6. 

  6. // +----------------------------------------------------------------------+
    7. 

  7. // | This source file is subject to version 2 of the GPL license,         |
    8. 

  8. // | that is bundled with this package in the file license.txt and is     |
    9. 

  9. // | available through the world-wide-web at the following url:           |
    10. 

  10. // | http://www.gnu.org/copyleft/gpl.html                                 |
    11. 

  11. // +----------------------------------------------------------------------+
    12. 

  12. // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |
    13. 

  13. // +----------------------------------------------------------------------+
    14. 

  14. // | Authors: James Heinrich <infoŘgetid3*org>                            |
    15. 

  15. // |          Allan Hansen <ahŘartemis*dk>                                |
    16. 

  16. // +----------------------------------------------------------------------+
    17. 

  17. // | module.audio-video.php                                               |
    18. 

  18. // | Module for analyzing Microsoft ASF, WMA and WMV files.               |
    19. 

  19. // | dependencies: module.audio-video.riff.php                            |
    20. 

  20. // +----------------------------------------------------------------------+
    21. 

  21. //
    22. 

  22. // $Id: module.audio-video.asf.php,v 1.7 2006/12/01 22:39:48 ah Exp $
    23. 

  23. 

  24. 

  25. 

  26. class getid3_asf extends getid3_handler
    27. 

  27. {
    28. 

  28. 

  29.     const Extended_Stream_Properties_Object   = '14E6A5CB-C672-4332-8399-A96952065B5A';
    30. 

  30.     const Padding_Object                      = '1806D474-CADF-4509-A4BA-9AABCB96AAE8';
    31. 

  31.     const Payload_Ext_Syst_Pixel_Aspect_Ratio = '1B1EE554-F9EA-4BC8-821A-376B74E4C4B8';
    32. 

  32.     const Script_Command_Object               = '1EFB1A30-0B62-11D0-A39B-00A0C90348F6';
    33. 

  33.     const No_Error_Correction                 = '20FB5700-5B55-11CF-A8FD-00805F5C442B';
    34. 

  34.     const Content_Branding_Object             = '2211B3FA-BD23-11D2-B4B7-00A0C955FC6E';
    35. 

  35.     const Content_Encryption_Object           = '2211B3FB-BD23-11D2-B4B7-00A0C955FC6E';
    36. 

  36.     const Digital_Signature_Object            = '2211B3FC-BD23-11D2-B4B7-00A0C955FC6E';
    37. 

  37.     const Extended_Content_Encryption_Object  = '298AE614-2622-4C17-B935-DAE07EE9289C';
    38. 

  38.     const Simple_Index_Object                 = '33000890-E5B1-11CF-89F4-00A0C90349CB';
    39. 

  39.     const Degradable_JPEG_Media               = '35907DE0-E415-11CF-A917-00805F5C442B';
    40. 

  40.     const Payload_Extension_System_Timecode   = '399595EC-8667-4E2D-8FDB-98814CE76C1E';
    41. 

  41.     const Binary_Media                        = '3AFB65E2-47EF-40F2-AC2C-70A90D71D343';
    42. 

  42.     const Timecode_Index_Object               = '3CB73FD0-0C4A-4803-953D-EDF7B6228F0C';
    43. 

  43.     const Metadata_Library_Object             = '44231C94-9498-49D1-A141-1D134E457054';
    44. 

  44.     const Reserved_3                          = '4B1ACBE3-100B-11D0-A39B-00A0C90348F6';
    45. 

  45.     const Reserved_4                          = '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB';
    46. 

  46.     const Command_Media                       = '59DACFC0-59E6-11D0-A3AC-00A0C90348F6';
    47. 

  47.     const Header_Extension_Object             = '5FBF03B5-A92E-11CF-8EE3-00C00C205365';
    48. 

  48.     const Media_Object_Index_Parameters_Obj   = '6B203BAD-3F11-4E84-ACA8-D7613DE2CFA7';
    49. 

  49.     const Header_Object                       = '75B22630-668E-11CF-A6D9-00AA0062CE6C';
    50. 

  50.     const Content_Description_Object          = '75B22633-668E-11CF-A6D9-00AA0062CE6C';
    51. 

  51.     const Error_Correction_Object             = '75B22635-668E-11CF-A6D9-00AA0062CE6C';
    52. 

  52.     const Data_Object                         = '75B22636-668E-11CF-A6D9-00AA0062CE6C';
    53. 

  53.     const Web_Stream_Media_Subtype            = '776257D4-C627-41CB-8F81-7AC7FF1C40CC';
    54. 

  54.     const Stream_Bitrate_Properties_Object    = '7BF875CE-468D-11D1-8D82-006097C9A2B2';
    55. 

  55.     const Language_List_Object                = '7C4346A9-EFE0-4BFC-B229-393EDE415C85';
    56. 

  56.     const Codec_List_Object                   = '86D15240-311D-11D0-A3A4-00A0C90348F6';
    57. 

  57.     const Reserved_2                          = '86D15241-311D-11D0-A3A4-00A0C90348F6';
    58. 

  58.     const File_Properties_Object              = '8CABDCA1-A947-11CF-8EE4-00C00C205365';
    59. 

  59.     const File_Transfer_Media                 = '91BD222C-F21C-497A-8B6D-5AA86BFC0185';
    60. 

  60.     const Old_RTP_Extension_Data              = '96800C63-4C94-11D1-837B-0080C7A37F95';
    61. 

  61.     const Advanced_Mutual_Exclusion_Object    = 'A08649CF-4775-4670-8A16-6E35357566CD';
    62. 

  62.     const Bandwidth_Sharing_Object            = 'A69609E6-517B-11D2-B6AF-00C04FD908E9';
    63. 

  63.     const Reserved_1                          = 'ABD3D211-A9BA-11CF-8EE6-00C00C205365';
    64. 

  64.     const Bandwidth_Sharing_Exclusive         = 'AF6060AA-5197-11D2-B6AF-00C04FD908E9';
    65. 

  65.     const Bandwidth_Sharing_Partial           = 'AF6060AB-5197-11D2-B6AF-00C04FD908E9';
    66. 

  66.     const JFIF_Media                          = 'B61BE100-5B4E-11CF-A8FD-00805F5C442B';
    67. 

  67.     const Stream_Properties_Object            = 'B7DC0791-A9B7-11CF-8EE6-00C00C205365';
    68. 

  68.     const Video_Media                         = 'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B';
    69. 

  69.     const Audio_Spread                        = 'BFC3CD50-618F-11CF-8BB2-00AA00B4E220';
    70. 

  70.     const Metadata_Object                     = 'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA';
    71. 

  71.     const Payload_Ext_Syst_Sample_Duration    = 'C6BD9450-867F-4907-83A3-C77921B733AD';
    72. 

  72.     const Group_Mutual_Exclusion_Object       = 'D1465A40-5A79-4338-B71B-E36B8FD6C249';
    73. 

  73.     const Extended_Content_Description_Object = 'D2D0A440-E307-11D2-97F0-00A0C95EA850';
    74. 

  74.     const Stream_Prioritization_Object        = 'D4FED15B-88D3-454F-81F0-ED5C45999E24';
    75. 

  75.     const Payload_Ext_System_Content_Type     = 'D590DC20-07BC-436C-9CF7-F3BBFBF1A4DC';
    76. 

  76.     const Old_File_Properties_Object          = 'D6E229D0-35DA-11D1-9034-00A0C90349BE';
    77. 

  77.     const Old_ASF_Header_Object               = 'D6E229D1-35DA-11D1-9034-00A0C90349BE';
    78. 

  78.     const Old_ASF_Data_Object                 = 'D6E229D2-35DA-11D1-9034-00A0C90349BE';
    79. 

  79.     const Index_Object                        = 'D6E229D3-35DA-11D1-9034-00A0C90349BE';
    80. 

  80.     const Old_Stream_Properties_Object        = 'D6E229D4-35DA-11D1-9034-00A0C90349BE';
    81. 

  81.     const Old_Content_Description_Object      = 'D6E229D5-35DA-11D1-9034-00A0C90349BE';
    82. 

  82.     const Old_Script_Command_Object           = 'D6E229D6-35DA-11D1-9034-00A0C90349BE';
    83. 

  83.     const Old_Marker_Object                   = 'D6E229D7-35DA-11D1-9034-00A0C90349BE';
    84. 

  84.     const Old_Component_Download_Object       = 'D6E229D8-35DA-11D1-9034-00A0C90349BE';
    85. 

  85.     const Old_Stream_Group_Object             = 'D6E229D9-35DA-11D1-9034-00A0C90349BE';
    86. 

  86.     const Old_Scalable_Object                 = 'D6E229DA-35DA-11D1-9034-00A0C90349BE';
    87. 

  87.     const Old_Prioritization_Object           = 'D6E229DB-35DA-11D1-9034-00A0C90349BE';
    88. 

  88.     const Bitrate_Mutual_Exclusion_Object     = 'D6E229DC-35DA-11D1-9034-00A0C90349BE';
    89. 

  89.     const Old_Inter_Media_Dependency_Object   = 'D6E229DD-35DA-11D1-9034-00A0C90349BE';
    90. 

  90.     const Old_Rating_Object                   = 'D6E229DE-35DA-11D1-9034-00A0C90349BE';
    91. 

  91.     const Index_Parameters_Object             = 'D6E229DF-35DA-11D1-9034-00A0C90349BE';
    92. 

  92.     const Old_Color_Table_Object              = 'D6E229E0-35DA-11D1-9034-00A0C90349BE';
    93. 

  93.     const Old_Language_List_Object            = 'D6E229E1-35DA-11D1-9034-00A0C90349BE';
    94. 

  94.     const Old_Audio_Media                     = 'D6E229E2-35DA-11D1-9034-00A0C90349BE';
    95. 

  95.     const Old_Video_Media                     = 'D6E229E3-35DA-11D1-9034-00A0C90349BE';
    96. 

  96.     const Old_Image_Media                     = 'D6E229E4-35DA-11D1-9034-00A0C90349BE';
    97. 

  97.     const Old_Timecode_Media                  = 'D6E229E5-35DA-11D1-9034-00A0C90349BE';
    98. 

  98.     const Old_Text_Media                      = 'D6E229E6-35DA-11D1-9034-00A0C90349BE';
    99. 

  99.     const Old_MIDI_Media                      = 'D6E229E7-35DA-11D1-9034-00A0C90349BE';
    100. 

  100.     const Old_Command_Media                   = 'D6E229E8-35DA-11D1-9034-00A0C90349BE';
    101. 

  101.     const Old_No_Error_Concealment            = 'D6E229EA-35DA-11D1-9034-00A0C90349BE';
    102. 

  102.     const Old_Scrambled_Audio                 = 'D6E229EB-35DA-11D1-9034-00A0C90349BE';
    103. 

  103.     const Old_No_Color_Table                  = 'D6E229EC-35DA-11D1-9034-00A0C90349BE';
    104. 

  104.     const Old_SMPTE_Time                      = 'D6E229ED-35DA-11D1-9034-00A0C90349BE';
    105. 

  105.     const Old_ASCII_Text                      = 'D6E229EE-35DA-11D1-9034-00A0C90349BE';
    106. 

  106.     const Old_Unicode_Text                    = 'D6E229EF-35DA-11D1-9034-00A0C90349BE';
    107. 

  107.     const Old_HTML_Text                       = 'D6E229F0-35DA-11D1-9034-00A0C90349BE';
    108. 

  108.     const Old_URL_Command                     = 'D6E229F1-35DA-11D1-9034-00A0C90349BE';
    109. 

  109.     const Old_Filename_Command                = 'D6E229F2-35DA-11D1-9034-00A0C90349BE';
    110. 

  110.     const Old_ACM_Codec                       = 'D6E229F3-35DA-11D1-9034-00A0C90349BE';
    111. 

  111.     const Old_VCM_Codec                       = 'D6E229F4-35DA-11D1-9034-00A0C90349BE';
    112. 

  112.     const Old_QuickTime_Codec                 = 'D6E229F5-35DA-11D1-9034-00A0C90349BE';
    113. 

  113.     const Old_DirectShow_Transform_Filter     = 'D6E229F6-35DA-11D1-9034-00A0C90349BE';
    114. 

  114.     const Old_DirectShow_Rendering_Filter     = 'D6E229F7-35DA-11D1-9034-00A0C90349BE';
    115. 

  115.     const Old_No_Enhancement                  = 'D6E229F8-35DA-11D1-9034-00A0C90349BE';
    116. 

  116.     const Old_Unknown_Enhancement_Type        = 'D6E229F9-35DA-11D1-9034-00A0C90349BE';
    117. 

  117.     const Old_Temporal_Enhancement            = 'D6E229FA-35DA-11D1-9034-00A0C90349BE';
    118. 

  118.     const Old_Spatial_Enhancement             = 'D6E229FB-35DA-11D1-9034-00A0C90349BE';
    119. 

  119.     const Old_Quality_Enhancement             = 'D6E229FC-35DA-11D1-9034-00A0C90349BE';
    120. 

  120.     const Old_Number_of_Channels_Enhancement  = 'D6E229FD-35DA-11D1-9034-00A0C90349BE';
    121. 

  121.     const Old_Frequency_Response_Enhancement  = 'D6E229FE-35DA-11D1-9034-00A0C90349BE';
    122. 

  122.     const Old_Media_Object                    = 'D6E229FF-35DA-11D1-9034-00A0C90349BE';
    123. 

  123.     const Mutex_Language                      = 'D6E22A00-35DA-11D1-9034-00A0C90349BE';
    124. 

  124.     const Mutex_Bitrate                       = 'D6E22A01-35DA-11D1-9034-00A0C90349BE';
    125. 

  125.     const Mutex_Unknown                       = 'D6E22A02-35DA-11D1-9034-00A0C90349BE';
    126. 

  126.     const Old_ASF_Placeholder_Object          = 'D6E22A0E-35DA-11D1-9034-00A0C90349BE';
    127. 

  127.     const Old_Data_Unit_Extension_Object      = 'D6E22A0F-35DA-11D1-9034-00A0C90349BE';
    128. 

  128.     const Web_Stream_Format                   = 'DA1E6B13-8359-4050-B398-388E965BF00C';
    129. 

  129.     const Payload_Ext_System_File_Name        = 'E165EC0E-19ED-45D7-B4A7-25CBD1E28E9B';
    130. 

  130.     const Marker_Object                       = 'F487CD01-A951-11CF-8EE6-00C00C205365';
    131. 

  131.     const Timecode_Index_Parameters_Object    = 'F55E496D-9797-4B5D-8C8B-604DFE9BFB24';
    132. 

  132.     const Audio_Media                         = 'F8699E40-5B4D-11CF-A8FD-00805F5C442B';
    133. 

  133.     const Media_Object_Index_Object           = 'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C';
    134. 

  134.     const Alt_Extended_Content_Encryption_Obj = 'FF889EF1-ADEE-40DA-9E71-98704BB928CE';
    135. 

  135. 

  136. 

  137. 

  138.     public function Analyze() {
    139. 

  139. 

  140.         $getid3 = $this->getid3;
    141. 

  141. 

  142.         $getid3->include_module('audio-video.riff');
    143. 

  143. 

  144.         !isset($getid3->info['audio']) and $getid3->info['audio'] = array();
    145. 

  145.         !isset($getid3->info['video']) and $getid3->info['video'] = array();
    146. 

  146.         $getid3->info['asf']['comments'] = $getid3->info['asf']['header_object'] = array();
    147. 

  147. 

  148.         $info_audio             = &$getid3->info['audio'];
    149. 

  149.         $info_video             = &$getid3->info['video'];
    150. 

  150.         $info_asf               = &$getid3->info['asf'];
    151. 

  151.         $info_asf_comments      = &$info_asf['comments'];
    152. 

  152.         $info_asf_header_object = &$info_asf['header_object'];
    153. 

  153. 

  154.         // ASF structure:
    155. 

  155.         // * Header Object [required]
    156. 

  156.         //   * File Properties Object [required]   (global file attributes)
    157. 

  157.         //   * Stream Properties Object [required] (defines media stream & characteristics)
    158. 

  158.         //   * Header Extension Object [required]  (additional functionality)
    159. 

  159.         //   * Content Description Object          (bibliographic information)
    160. 

  160.         //   * Script Command Object               (commands for during playback)
    161. 

  161.         //   * Marker Object                       (named jumped points within the file)
    162. 

  162.         // * Data Object [required]
    163. 

  163.         //   * Data Packets
    164. 

  164.         // * Index Object
    165. 

  165. 

  166.         // Header Object: (mandatory, one only)
    167. 

  167.         // Field Name                   Field Type   Size (bits)
    168. 

  168.         // Object ID                    GUID         128             // GUID for header object - getid3_asf::Header_Object
    169. 

  169.         // Object Size                  QWORD        64              // size of header object, including 30 bytes of Header Object header
    170. 

  170.         // Number of Header Objects     DWORD        32              // number of objects in header object
    171. 

  171.         // Reserved1                    BYTE         8               // hardcoded: 0x01
    172. 

  172.         // Reserved2                    BYTE         8               // hardcoded: 0x02
    173. 

  173. 

  174.         $getid3->info['fileformat'] = 'asf';
    175. 

  175. 

  176.         fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET);
    177. 

  177.         $header_object_data = fread($getid3->fp, 30);
    178. 

  178. 

  179.         $info_asf_header_object['objectid_guid'] = getid3_asf::BytestringToGUID(substr($header_object_data, 0, 16));
    180. 

  180. 

  181.         if ($info_asf_header_object['objectid_guid'] != getid3_asf::Header_Object) {
    182. 

  182.             throw new getid3_exception('ASF header GUID {'.$info_asf_header_object['objectid_guid'].'} does not match expected "getid3_asf::Header_Object" GUID {'.getid3_asf::Header_Object.'}');
    183. 

  183.         }
    184. 

  184. 

  185.         getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_header_object, $header_object_data, 16,
    186. 

  186.             array(
    187. 

  187.                 'objectsize'    => 8,
    188. 

  188.                 'headerobjects' => 4,
    189. 

  189.                 'reserved1'     => 1,
    190. 

  190.                 'reserved2'     => 1
    191. 

  191.             )
    192. 

  192.         );
    193. 

  193. 

  194.         $asf_header_data = fread($getid3->fp, $info_asf_header_object['objectsize'] - 30);
    195. 

  195.         $offset = 0;
    196. 

  196. 

  197.         for ($header_objects_counter = 0; $header_objects_counter < $info_asf_header_object['headerobjects']; $header_objects_counter++) {
    198. 

  198. 

  199.             $next_object_guid = substr($asf_header_data, $offset, 16);
    200. 

  200.             $offset += 16;
    201. 

  201. 

  202.             $next_object_size = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 8));
    203. 

  203.             $offset += 8;
    204. 

  204. 

  205.             $next_object_guidtext = getid3_asf::BytestringToGUID($next_object_guid);
    206. 

  206. 

  207.             switch ($next_object_guidtext) {
    208. 

  208. 

  209.                 case getid3_asf::File_Properties_Object:
    210. 

  210. 

  211.                     // File Properties Object: (mandatory, one only)
    212. 

  212.                     // Field Name                   Field Type   Size (bits)
    213. 

  213.                     // Object ID                    GUID         128             // GUID for file properties object - getid3_asf::File_Properties_Object
    214. 

  214.                     // Object Size                  QWORD        64              // size of file properties object, including 104 bytes of File Properties Object header
    215. 

  215.                     // File ID                      GUID         128             // unique ID - identical to File ID in Data Object
    216. 

  216.                     // File Size                    QWORD        64              // entire file in bytes. Invalid if Broadcast Flag == 1
    217. 

  217.                     // Creation Date                QWORD        64              // date & time of file creation. Maybe invalid if Broadcast Flag == 1
    218. 

  218.                     // Data Packets Count           QWORD        64              // number of data packets in Data Object. Invalid if Broadcast Flag == 1
    219. 

  219.                     // Play Duration                QWORD        64              // playtime, in 100-nanosecond units. Invalid if Broadcast Flag == 1
    220. 

  220.                     // Send Duration                QWORD        64              // time needed to send file, in 100-nanosecond units. Players can ignore this value. Invalid if Broadcast Flag == 1
    221. 

  221.                     // 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
    222. 

  222.                     // Flags                        DWORD        32              //
    223. 

  223.                     // * Broadcast Flag             bits         1  (0x01)       // file is currently being written, some header values are invalid
    224. 

  224.                     // * Seekable Flag              bits         1  (0x02)       // is file seekable
    225. 

  225.                     // * Reserved                   bits         30 (0xFFFFFFFC) // reserved - set to zero
    226. 

  226.                     // Minimum Data Packet Size     DWORD        32              // in bytes. should be same as Maximum Data Packet Size. Invalid if Broadcast Flag == 1
    227. 

  227.                     // Maximum Data Packet Size     DWORD        32              // in bytes. should be same as Minimum Data Packet Size. Invalid if Broadcast Flag == 1
    228. 

  228.                     // Maximum Bitrate              DWORD        32              // maximum instantaneous bitrate in bits per second for entire file, including all data streams and ASF overhead
    229. 

  229. 

  230.                     $info_asf['file_properties_object'] = array();
    231. 

  231.                     $info_asf_file_properties_object = &$info_asf['file_properties_object'];
    232. 

  232. 

  233.                     $info_asf_file_properties_object['objectid_guid']      = $next_object_guidtext;
    234. 

  234.                     $info_asf_file_properties_object['objectsize']         = $next_object_size;
    235. 

  235. 

  236.                     $info_asf_file_properties_object['fileid_guid']        = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    237. 

  237.                     $offset += 16;
    238. 

  238. 

  239.                     getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_file_properties_object, $asf_header_data, $offset,
    240. 

  240.                         array(
    241. 

  241.                             'filesize'        => 8,
    242. 

  242.                             'creation_date'   => 8,
    243. 

  243.                             'data_packets'    => 8,
    244. 

  244.                             'play_duration'   => 8,
    245. 

  245.                             'send_duration'   => 8,
    246. 

  246.                             'preroll'         => 8,
    247. 

  247.                             'flags_raw'       => 4,
    248. 

  248.                             'min_packet_size' => 4,
    249. 

  249.                             'max_packet_size' => 4,
    250. 

  250.                             'max_bitrate'     => 4
    251. 

  251.                         )
    252. 

  252.                     );
    253. 

  253. 

  254.                     $offset += 64;
    255. 

  255. 

  256.                     if ($info_asf_file_properties_object['filesize'] > $getid3->info['filesize']) {
    257. 

  257.                         $getid3->warning('Probable truncated file: file_properties_object.filesize ('.number_format($info_asf_file_properties_object['filesize']).') > filesize ('.number_format($getid3->info['filesize']).')');
    258. 

  258.                     }
    259. 

  259. 

  260.                     $info_asf_file_properties_object['creation_date_unix'] = getid3_asf::FiletimeToUNIXtime($info_asf_file_properties_object['creation_date']);
    261. 

  261.                     $info_asf_file_properties_object['flags']['broadcast'] = (bool)($info_asf_file_properties_object['flags_raw'] & 0x0001);
    262. 

  262.                     $info_asf_file_properties_object['flags']['seekable']  = (bool)($info_asf_file_properties_object['flags_raw'] & 0x0002);
    263. 

  263. 

  264.                     $getid3->info['playtime_seconds'] = ($info_asf_file_properties_object['play_duration'] / 10000000) - ($info_asf_file_properties_object['preroll'] / 1000);
    265. 

  265.                     $getid3->info['bitrate']          = ($info_asf_file_properties_object['filesize'] * 8) / $getid3->info['playtime_seconds'];
    266. 

  266.                     break;
    267. 

  267. 

  268. 

  269.                 case getid3_asf::Stream_Properties_Object:
    270. 

  270. 

  271.                     // Stream Properties Object: (mandatory, one per media stream)
    272. 

  272.                     // Field Name                   Field Type   Size (bits)
    273. 

  273.                     // Object ID                    GUID         128             // GUID for stream properties object - getid3_asf::Stream_Properties_Object
    274. 

  274.                     // Object Size                  QWORD        64              // size of stream properties object, including 78 bytes of Stream Properties Object header
    275. 

  275.                     // Stream Type                  GUID         128             // getid3_asf::Audio_Media, getid3_asf::Video_Media or getid3_asf::Command_Media
    276. 

  276.                     // Error Correction Type        GUID         128             // getid3_asf::Audio_Spread for audio-only streams, getid3_asf::No_Error_Correction for other stream types
    277. 

  277.                     // Time Offset                  QWORD        64              // 100-nanosecond units. typically zero. added to all timestamps of samples in the stream
    278. 

  278.                     // Type-Specific Data Length    DWORD        32              // number of bytes for Type-Specific Data field
    279. 

  279.                     // Error Correction Data Length DWORD        32              // number of bytes for Error Correction Data field
    280. 

  280.                     // Flags                        WORD         16              //
    281. 

  281.                     // * Stream Number              bits         7 (0x007F)      // number of this stream.  1 <= valid <= 127
    282. 

  282.                     // * Reserved                   bits         8 (0x7F80)      // reserved - set to zero
    283. 

  283.                     // * Encrypted Content Flag     bits         1 (0x8000)      // stream contents encrypted if set
    284. 

  284.                     // Reserved                     DWORD        32              // reserved - set to zero
    285. 

  285.                     // Type-Specific Data           BYTESTREAM   variable        // type-specific format data, depending on value of Stream Type
    286. 

  286.                     // Error Correction Data        BYTESTREAM   variable        // error-correction-specific format data, depending on value of Error Correct Type
    287. 

  287. 

  288.                     // There is one getid3_asf::Stream_Properties_Object for each stream (audio, video) but the
    289. 

  289.                     // stream number isn't known until halfway through decoding the structure, hence it
    290. 

  290.                     // it is decoded to a temporary variable and then stuck in the appropriate index later
    291. 

  291. 

  292.                     $stream_properties_object_data['objectid_guid']      = $next_object_guidtext;
    293. 

  293.                     $stream_properties_object_data['objectsize']         = $next_object_size;
    294. 

  294. 

  295.                     getid3_lib::ReadSequence('LittleEndian2Int', $stream_properties_object_data, $asf_header_data, $offset,
    296. 

  296.                         array(
    297. 

  297.                             'stream_type'        => -16,
    298. 

  298.                             'error_correct_type' => -16,
    299. 

  299.                             'time_offset'        => 8,
    300. 

  300.                             'type_data_length'   => 4,
    301. 

  301.                             'error_data_length'  => 4,
    302. 

  302.                             'flags_raw'          => 2
    303. 

  303.                         )
    304. 

  304.                     );
    305. 

  305. 

  306.                     $stream_properties_stream_number                     =        $stream_properties_object_data['flags_raw'] & 0x007F;
    307. 

  307.                     $stream_properties_object_data['flags']['encrypted'] = (bool)($stream_properties_object_data['flags_raw'] & 0x8000);
    308. 

  308. 

  309.                     $stream_properties_object_data['stream_type_guid']   = getid3_asf::BytestringToGUID($stream_properties_object_data['stream_type']);
    310. 

  310.                     $stream_properties_object_data['error_correct_guid'] = getid3_asf::BytestringToGUID($stream_properties_object_data['error_correct_type']);
    311. 

  311. 

  312.                     $offset += 54; // 50 bytes + 4 bytes reserved - DWORD
    313. 

  313. 

  314.                     $stream_properties_object_data['type_specific_data'] = substr($asf_header_data, $offset, $stream_properties_object_data['type_data_length']);
    315. 

  315.                     $offset += $stream_properties_object_data['type_data_length'];
    316. 

  316. 

  317.                     $stream_properties_object_data['error_correct_data'] = substr($asf_header_data, $offset, $stream_properties_object_data['error_data_length']);
    318. 

  318.                     $offset += $stream_properties_object_data['error_data_length'];
    319. 

  319. 

  320.                     switch ($stream_properties_object_data['stream_type_guid']) {
    321. 

  321. 

  322.                         case getid3_asf::Audio_Media:
    323. 

  323. 

  324.                             $info_audio['dataformat']   = (@$info_audio['dataformat']   ? $info_audio['dataformat']   : 'asf');
    325. 

  325.                             $info_audio['bitrate_mode'] = (@$info_audio['bitrate_mode'] ? $info_audio['bitrate_mode'] : 'cbr');
    326. 

  326. 

  327.                             $audiodata = getid3_riff::RIFFparseWAVEFORMATex(substr($stream_properties_object_data['type_specific_data'], 0, 16));
    328. 

  328.                             unset($audiodata['raw']);
    329. 

  329.                             $info_audio = getid3_riff::array_merge_noclobber($audiodata, $info_audio);
    330. 

  330.                             break;
    331. 

  331. 

  332. 

  333.                         case getid3_asf::Video_Media:
    334. 

  334. 

  335.                             $info_video['dataformat']   = (@$info_video['dataformat']   ? $info_video['dataformat']   : 'asf');
    336. 

  336.                             $info_video['bitrate_mode'] = (@$info_video['bitrate_mode'] ? $info_video['bitrate_mode'] : 'cbr');
    337. 

  337.                             break;
    338. 

  338. 

  339. 

  340.                         /* does nothing but eat memory
    341. 

  341.                         case getid3_asf::Command_Media:
    342. 

  342.                         default:
    343. 

  343.                             // do nothing
    344. 

  344.                             break;
    345. 

  345.                         */
    346. 

  346.                     }
    347. 

  347. 

  348.                     $info_asf['stream_properties_object'][$stream_properties_stream_number] = $stream_properties_object_data;
    349. 

  349.                     unset($stream_properties_object_data); // clear for next stream, if any
    350. 

  350.                     break;
    351. 

  351. 

  352. 

  353.                 case getid3_asf::Header_Extension_Object:
    354. 

  354. 

  355.                     // Header Extension Object: (mandatory, one only)
    356. 

  356.                     // Field Name                   Field Type   Size (bits)
    357. 

  357.                     // Object ID                    GUID         128             // GUID for Header Extension object - getid3_asf::Header_Extension_Object
    358. 

  358.                     // Object Size                  QWORD        64              // size of Header Extension object, including 46 bytes of Header Extension Object header
    359. 

  359.                     // Reserved Field 1             GUID         128             // hardcoded: getid3_asf::Reserved_1
    360. 

  360.                     // Reserved Field 2             WORD         16              // hardcoded: 0x00000006
    361. 

  361.                     // Header Extension Data Size   DWORD        32              // in bytes. valid: 0, or > 24. equals object size minus 46
    362. 

  362.                     // Header Extension Data        BYTESTREAM   variable        // array of zero or more extended header objects
    363. 

  363. 

  364.                     $info_asf['header_extension_object'] = array();
    365. 

  365.                     $info_asf_header_extension_object    = &$info_asf['header_extension_object'];
    366. 

  366. 

  367.                     $info_asf_header_extension_object['objectid_guid']   = $next_object_guidtext;
    368. 

  368.                     $info_asf_header_extension_object['objectsize']      = $next_object_size;
    369. 

  369.                     $info_asf_header_extension_object['reserved_1_guid'] = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    370. 

  370.                     $offset += 16;
    371. 

  371. 

  372.                     if ($info_asf_header_extension_object['reserved_1_guid'] != getid3_asf::Reserved_1) {
    373. 

  373.                         $getid3->warning('header_extension_object.reserved_1 GUID ('.$info_asf_header_extension_object['reserved_1_guid'].') does not match expected "getid3_asf::Reserved_1" GUID ('.getid3_asf::Reserved_1.')');
    374. 

  374.                         break;
    375. 

  375.                     }
    376. 

  376. 

  377.                     $info_asf_header_extension_object['reserved_2'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    378. 

  378.                     $offset += 2;
    379. 

  379. 

  380.                     if ($info_asf_header_extension_object['reserved_2'] != 6) {
    381. 

  381.                         $getid3->warning('header_extension_object.reserved_2 ('.getid3_lib::PrintHexBytes($info_asf_header_extension_object['reserved_2']).') does not match expected value of "6"');
    382. 

  382.                         break;
    383. 

  383.                     }
    384. 

  384. 

  385.                     $info_asf_header_extension_object['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    386. 

  386.                     $offset += 4;
    387. 

  387. 

  388.                     $info_asf_header_extension_object['extension_data'] = substr($asf_header_data, $offset, $info_asf_header_extension_object['extension_data_size']);
    389. 

  389.                     $offset += $info_asf_header_extension_object['extension_data_size'];
    390. 

  390.                     break;
    391. 

  391. 

  392. 

  393.                 case getid3_asf::Codec_List_Object:
    394. 

  394. 

  395.                     // Codec List Object: (optional, one only)
    396. 

  396.                     // Field Name                   Field Type   Size (bits)
    397. 

  397.                     // Object ID                    GUID         128             // GUID for Codec List object - getid3_asf::Codec_List_Object
    398. 

  398.                     // Object Size                  QWORD        64              // size of Codec List object, including 44 bytes of Codec List Object header
    399. 

  399.                     // Reserved                     GUID         128             // hardcoded: 86D15241-311D-11D0-A3A4-00A0C90348F6
    400. 

  400.                     // Codec Entries Count          DWORD        32              // number of entries in Codec Entries array
    401. 

  401.                     // Codec Entries                array of:    variable        //
    402. 

  402.                     // * Type                       WORD         16              // 0x0001 = Video Codec, 0x0002 = Audio Codec, 0xFFFF = Unknown Codec
    403. 

  403.                     // * Codec Name Length          WORD         16              // number of Unicode characters stored in the Codec Name field
    404. 

  404.                     // * Codec Name                 WCHAR        variable        // array of Unicode characters - name of codec used to create the content
    405. 

  405.                     // * Codec Description Length   WORD         16              // number of Unicode characters stored in the Codec Description field
    406. 

  406.                     // * Codec Description          WCHAR        variable        // array of Unicode characters - description of format used to create the content
    407. 

  407.                     // * Codec Information Length   WORD         16              // number of Unicode characters stored in the Codec Information field
    408. 

  408.                     // * Codec Information          BYTESTREAM   variable        // opaque array of information bytes about the codec used to create the content
    409. 

  409. 

  410.                     $info_asf['codec_list_object'] = array();
    411. 

  411.                     $info_asf_codec_list_object      = &$info_asf['codec_list_object'];
    412. 

  412. 

  413.                     $info_asf_codec_list_object['objectid_guid'] = $next_object_guidtext;
    414. 

  414.                     $info_asf_codec_list_object['objectsize']    = $next_object_size;
    415. 

  415. 

  416.                     $info_asf_codec_list_object['reserved_guid'] = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    417. 

  417.                     $offset += 16;
    418. 

  418. 

  419.                     if ($info_asf_codec_list_object['reserved_guid'] != '86D15241-311D-11D0-A3A4-00A0C90348F6') {
    420. 

  420.                         $getid3->warning('codec_list_object.reserved GUID {'.$info_asf_codec_list_object['reserved_guid'].'} does not match expected "getid3_asf::Reserved_1" GUID {86D15241-311D-11D0-A3A4-00A0C90348F6}');
    421. 

  421.                         break;
    422. 

  422.                     }
    423. 

  423. 

  424.                     $info_asf_codec_list_object['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    425. 

  425.                     $offset += 4;
    426. 

  426. 

  427.                     for ($codec_entry_counter = 0; $codec_entry_counter < $info_asf_codec_list_object['codec_entries_count']; $codec_entry_counter++) {
    428. 

  428. 

  429.                         $info_asf_codec_list_object['codec_entries'][$codec_entry_counter] = array();
    430. 

  430.                         $info_asf_codec_list_object_codecentries_current = &$info_asf_codec_list_object['codec_entries'][$codec_entry_counter];
    431. 

  431. 

  432.                         $info_asf_codec_list_object_codecentries_current['type_raw'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    433. 

  433.                         $offset += 2;
    434. 

  434. 

  435.                         $info_asf_codec_list_object_codecentries_current['type'] = getid3_asf::ASFCodecListObjectTypeLookup($info_asf_codec_list_object_codecentries_current['type_raw']);
    436. 

  436. 

  437.                         $codec_name_length = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2)) * 2; // 2 bytes per character
    438. 

  438.                         $offset += 2;
    439. 

  439. 

  440.                         $info_asf_codec_list_object_codecentries_current['name'] = substr($asf_header_data, $offset, $codec_name_length);
    441. 

  441.                         $offset += $codec_name_length;
    442. 

  442. 

  443.                         $codec_description_length = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2)) * 2; // 2 bytes per character
    444. 

  444.                         $offset += 2;
    445. 

  445. 

  446.                         $info_asf_codec_list_object_codecentries_current['description'] = substr($asf_header_data, $offset, $codec_description_length);
    447. 

  447.                         $offset += $codec_description_length;
    448. 

  448. 

  449.                         $codec_information_length = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    450. 

  450.                         $offset += 2;
    451. 

  451. 

  452.                         $info_asf_codec_list_object_codecentries_current['information'] = substr($asf_header_data, $offset, $codec_information_length);
    453. 

  453.                         $offset += $codec_information_length;
    454. 

  454. 

  455.                         if ($info_asf_codec_list_object_codecentries_current['type_raw'] == 2) { // audio codec
    456. 

  456. 

  457.                             if (strpos($info_asf_codec_list_object_codecentries_current['description'], ',') === false) {
    458. 

  458.                                 $getid3->warning('[asf][codec_list_object][codec_entries]['.$codec_entry_counter.'][description] expected to contain comma-seperated list of parameters: "'.$info_asf_codec_list_object_codecentries_current['description'].'"');
    459. 

  459.                             } else {
    460. 

  460. 	                            list($audio_codec_bitrate, $audio_codec_frequency, $audio_codec_channels) = explode(',', $this->TrimConvert($info_asf_codec_list_object_codecentries_current['description']));
    461. 

  461. 	                            $info_audio['codec'] = $this->TrimConvert($info_asf_codec_list_object_codecentries_current['name']);
    462. 

  462. 

  463. 	                            if (!isset($info_audio['bitrate']) && strstr($audio_codec_bitrate, 'kbps')) {
    464. 

  464. 	                                $info_audio['bitrate'] = (int)(trim(str_replace('kbps', '', $audio_codec_bitrate)) * 1000);
    465. 

  465. 	                            }
    466. 

  466. 

  467. 	                            if (!isset($info_video['bitrate']) && isset($info_audio['bitrate']) && isset($info_asf['file_properties_object']['max_bitrate']) && ($info_asf_codec_list_object['codec_entries_count'] > 1)) {
    468. 

  468. 	                                $info_video['bitrate'] = $info_asf['file_properties_object']['max_bitrate'] - $info_audio['bitrate'];
    469. 

  469. 	                            }
    470. 

  470. 

  471. 	                            if (!@$info_video['bitrate'] && @$info_audio['bitrate'] && @$getid3->info['bitrate']) {
    472. 

  472. 									$info_video['bitrate'] = $getid3->info['bitrate'] - $info_audio['bitrate'];
    473. 

  473. 								}
    474. 

  474. 

  475. 	                            $audio_codec_frequency = (int)trim(str_replace('kHz', '', $audio_codec_frequency));
    476. 

  476. 

  477. 	                            static $sample_rate_lookup = array(
    478. 

  478. 	                                8  =>  8000,    8000 =>  8000,
    479. 

  479. 	                                11 => 11025,   11025 => 11025,
    480. 

  480. 	                                12 => 12000,   12000 => 12000,
    481. 

  481. 	                                16 => 16000,   16000 => 16000,
    482. 

  482. 	                                22 => 22050,   22050 => 22050,
    483. 

  483. 	                                24 => 24000,   24000 => 24000,
    484. 

  484. 	                                32 => 32000,   32000 => 32000,
    485. 

  485. 	                                44 => 44100,   44100 => 44100,
    486. 

  486. 	                                48 => 48000,   48000 => 48000,
    487. 

  487. 	                            );
    488. 

  488. 

  489. 	                            $info_audio['sample_rate'] = @$sample_rate_lookup[$audio_codec_frequency];
    490. 

  490. 

  491. 	                            if (!$info_audio['sample_rate']) {
    492. 

  492. 	                                $getid3->warning('unknown frequency: "'.$audio_codec_frequency.'" ('.$this->TrimConvert($info_asf_codec_list_object_codecentries_current['description']).')');
    493. 

  493. 	                                break;
    494. 

  494. 	                            }
    495. 

  495. 

  496. 	                            if (!isset($info_audio['channels'])) {
    497. 

  497. 	                                if (strstr($audio_codec_channels, 'stereo')) {
    498. 

  498. 	                                    $info_audio['channels'] = 2;
    499. 

  499. 	                                } elseif (strstr($audio_codec_channels, 'mono')) {
    500. 

  500. 	                                    $info_audio['channels'] = 1;
    501. 

  501. 	                                }
    502. 

  502. 	                            }
    503. 

  503. 	                        }
    504. 

  504.                         }
    505. 

  505.                     }
    506. 

  506.                     break;
    507. 

  507. 

  508. 

  509.                 case getid3_asf::Script_Command_Object:
    510. 

  510. 

  511.                     // Script Command Object: (optional, one only)
    512. 

  512.                     // Field Name                   Field Type   Size (bits)
    513. 

  513.                     // Object ID                    GUID         128             // GUID for Script Command object - getid3_asf::Script_Command_Object
    514. 

  514.                     // Object Size                  QWORD        64              // size of Script Command object, including 44 bytes of Script Command Object header
    515. 

  515.                     // Reserved                     GUID         128             // hardcoded: 4B1ACBE3-100B-11D0-A39B-00A0C90348F6
    516. 

  516.                     // Commands Count               WORD         16              // number of Commands structures in the Script Commands Objects
    517. 

  517.                     // Command Types Count          WORD         16              // number of Command Types structures in the Script Commands Objects
    518. 

  518.                     // Command Types                array of:    variable        //
    519. 

  519.                     // * Command Type Name Length   WORD         16              // number of Unicode characters for Command Type Name
    520. 

  520.                     // * Command Type Name          WCHAR        variable        // array of Unicode characters - name of a type of command
    521. 

  521.                     // Commands                     array of:    variable        //
    522. 

  522.                     // * Presentation Time          DWORD        32              // presentation time of that command, in milliseconds
    523. 

  523.                     // * Type Index                 WORD         16              // type of this command, as a zero-based index into the array of Command Types of this object
    524. 

  524.                     // * Command Name Length        WORD         16              // number of Unicode characters for Command Name
    525. 

  525.                     // * Command Name               WCHAR        variable        // array of Unicode characters - name of this command
    526. 

  526. 

  527.                     // shortcut
    528. 

  528.                     $info_asf['script_command_object'] = array();
    529. 

  529.                     $info_asf_script_command_object    = &$info_asf['script_command_object'];
    530. 

  530. 

  531.                     $info_asf_script_command_object['objectid_guid'] = $next_object_guidtext;
    532. 

  532.                     $info_asf_script_command_object['objectsize']    = $next_object_size;
    533. 

  533.                     $info_asf_script_command_object['reserved_guid'] = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    534. 

  534.                     $offset += 16;
    535. 

  535. 

  536.                     if ($info_asf_script_command_object['reserved_guid'] != '4B1ACBE3-100B-11D0-A39B-00A0C90348F6') {
    537. 

  537.                         $getid3->warning('script_command_object.reserved GUID {'.$info_asf_script_command_object['reserved_guid'].'} does not match expected GUID {4B1ACBE3-100B-11D0-A39B-00A0C90348F6}');
    538. 

  538.                         break;
    539. 

  539.                     }
    540. 

  540. 

  541.                     $info_asf_script_command_object['commands_count']       = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    542. 

  542.                     $offset += 2;
    543. 

  543. 

  544.                     $info_asf_script_command_object['command_types_count']  = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    545. 

  545.                     $offset += 2;
    546. 

  546. 

  547.                     for ($command_types_counter = 0; $command_types_counter < $info_asf_script_command_object['command_types_count']; $command_types_counter++) {
    548. 

  548. 

  549.                         $command_type_name_length = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2)) * 2; // 2 bytes per character
    550. 

  550.                         $offset += 2;
    551. 

  551. 

  552.                         $info_asf_script_command_object['command_types'][$command_types_counter]['name'] = substr($asf_header_data, $offset, $command_type_name_length);
    553. 

  553.                         $offset += $command_type_name_length;
    554. 

  554.                     }
    555. 

  555. 

  556.                     for ($commands_counter = 0; $commands_counter < $info_asf_script_command_object['commands_count']; $commands_counter++) {
    557. 

  557. 

  558.                         $info_asf_script_command_object['commands'][$commands_counter]['presentation_time'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    559. 

  559.                         $offset += 4;
    560. 

  560. 

  561.                         $info_asf_script_command_object['commands'][$commands_counter]['type_index']        = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    562. 

  562.                         $offset += 2;
    563. 

  563. 

  564.                         $command_type_name_length                                                           = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2)) * 2; // 2 bytes per character
    565. 

  565.                         $offset += 2;
    566. 

  566. 

  567.                         $info_asf_script_command_object['commands'][$commands_counter]['name']              = substr($asf_header_data, $offset, $command_type_name_length);
    568. 

  568.                         $offset += $command_type_name_length;
    569. 

  569.                     }
    570. 

  570.                     break;
    571. 

  571. 

  572. 

  573.                 case getid3_asf::Marker_Object:
    574. 

  574. 

  575.                     // Marker Object: (optional, one only)
    576. 

  576.                     // Field Name                   Field Type   Size (bits)
    577. 

  577.                     // Object ID                    GUID         128             // GUID for Marker object - getid3_asf::Marker_Object
    578. 

  578.                     // Object Size                  QWORD        64              // size of Marker object, including 48 bytes of Marker Object header
    579. 

  579.                     // Reserved                     GUID         128             // hardcoded: 4CFEDB20-75F6-11CF-9C0F-00A0C90349CB
    580. 

  580.                     // Markers Count                DWORD        32              // number of Marker structures in Marker Object
    581. 

  581.                     // Reserved                     WORD         16              // hardcoded: 0x0000
    582. 

  582.                     // Name Length                  WORD         16              // number of bytes in the Name field
    583. 

  583.                     // Name                         WCHAR        variable        // name of the Marker Object
    584. 

  584.                     // Markers                      array of:    variable        //
    585. 

  585.                     // * Offset                     QWORD        64              // byte offset into Data Object
    586. 

  586.                     // * Presentation Time          QWORD        64              // in 100-nanosecond units
    587. 

  587.                     // * Entry Length               WORD         16              // length in bytes of (Send Time + Flags + Marker Description Length + Marker Description + Padding)
    588. 

  588.                     // * Send Time                  DWORD        32              // in milliseconds
    589. 

  589.                     // * Flags                      DWORD        32              // hardcoded: 0x00000000
    590. 

  590.                     // * Marker Description Length  DWORD        32              // number of bytes in Marker Description field
    591. 

  591.                     // * Marker Description         WCHAR        variable        // array of Unicode characters - description of marker entry
    592. 

  592.                     // * Padding                    BYTESTREAM   variable        // optional padding bytes
    593. 

  593. 

  594.                     $info_asf['marker_object'] = array();
    595. 

  595.                     $info_asf_marker_object    = &$info_asf['marker_object'];
    596. 

  596. 

  597.                     $info_asf_marker_object['objectid_guid'] = $next_object_guidtext;
    598. 

  598.                     $info_asf_marker_object['objectsize']    = $next_object_size;
    599. 

  599.                     $info_asf_marker_object['reserved_guid'] = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    600. 

  600.                     $offset += 16;
    601. 

  601. 

  602.                     if ($info_asf_marker_object['reserved_guid'] != '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB') {
    603. 

  603.                         $getid3->warning('marker_object.reserved GUID {'.$info_asf_marker_object['reserved_guid'].'} does not match expected GUID {4CFEDB20-75F6-11CF-9C0F-00A0C90349CB}');
    604. 

  604.                         break;
    605. 

  605.                     }
    606. 

  606. 

  607.                     $info_asf_marker_object['markers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    608. 

  608.                     $offset += 4;
    609. 

  609. 

  610.                     $info_asf_marker_object['reserved_2']    = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    611. 

  611.                     $offset += 2;
    612. 

  612. 

  613.                     if ($info_asf_marker_object['reserved_2'] != 0) {
    614. 

  614.                         $getid3->warning('marker_object.reserved_2 ('.getid3_lib::PrintHexBytes($info_asf_marker_object['reserved_2']).') does not match expected value of "0"');
    615. 

  615.                         break;
    616. 

  616.                     }
    617. 

  617. 

  618.                     $info_asf_marker_object['name_length']   = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    619. 

  619.                     $offset += 2;
    620. 

  620. 

  621.                     $info_asf_marker_object['name'] = substr($asf_header_data, $offset, $info_asf_marker_object['name_length']);
    622. 

  622.                     $offset += $info_asf_marker_object['name_length'];
    623. 

  623. 

  624.                     for ($markers_counter = 0; $markers_counter < $info_asf_marker_object['markers_count']; $markers_counter++) {
    625. 

  625. 

  626.                         getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_marker_object['markers'][$markers_counter], $asf_header_data, $offset,
    627. 

  627.                             array(
    628. 

  628.                                 'offset'                    => 8,
    629. 

  629.                                 'presentation_time'         => 8,
    630. 

  630.                                 'entry_length'              => 2,
    631. 

  631.                                 'send_time'                 => 4,
    632. 

  632.                                 'flags'                     => 4,
    633. 

  633.                                 'marker_description_length' => 4
    634. 

  634.                             )
    635. 

  635.                         );
    636. 

  636.                         $offset += 30;
    637. 

  637. 

  638.                         $info_asf_marker_object['markers'][$markers_counter]['marker_description'] = substr($asf_header_data, $offset, $info_asf_marker_object['markers'][$markers_counter]['marker_description_length']);
    639. 

  639.                         $offset += $info_asf_marker_object['markers'][$markers_counter]['marker_description_length'];
    640. 

  640. 

  641.                         $padding_length = $info_asf_marker_object['markers'][$markers_counter]['entry_length'] - 4 -  4 - 4 - $info_asf_marker_object['markers'][$markers_counter]['marker_description_length'];
    642. 

  642.                         if ($padding_length > 0) {
    643. 

  643.                             $info_asf_marker_object['markers'][$markers_counter]['padding'] = substr($asf_header_data, $offset, $padding_length);
    644. 

  644.                             $offset += $padding_length;
    645. 

  645.                         }
    646. 

  646.                     }
    647. 

  647.                     break;
    648. 

  648. 

  649. 

  650.                 case getid3_asf::Bitrate_Mutual_Exclusion_Object:
    651. 

  651. 

  652.                     // Bitrate Mutual Exclusion Object: (optional)
    653. 

  653.                     // Field Name                   Field Type   Size (bits)
    654. 

  654.                     // Object ID                    GUID         128             // GUID for Bitrate Mutual Exclusion object - getid3_asf::Bitrate_Mutual_Exclusion_Object
    655. 

  655.                     // Object Size                  QWORD        64              // size of Bitrate Mutual Exclusion object, including 42 bytes of Bitrate Mutual Exclusion Object header
    656. 

  656.                     // Exlusion Type                GUID         128             // nature of mutual exclusion relationship. one of: (getid3_asf::Mutex_Bitrate, getid3_asf::Mutex_Unknown)
    657. 

  657.                     // Stream Numbers Count         WORD         16              // number of video streams
    658. 

  658.                     // Stream Numbers               WORD         variable        // array of mutually exclusive video stream numbers. 1 <= valid <= 127
    659. 

  659. 

  660.                     // shortcut
    661. 

  661.                     $info_asf['bitrate_mutual_exclusion_object'] = array();
    662. 

  662.                     $info_asf_bitrate_mutual_exclusion_object    = &$info_asf['bitrate_mutual_exclusion_object'];
    663. 

  663. 

  664.                     $info_asf_bitrate_mutual_exclusion_object['objectid_guid'] = $next_object_guidtext;
    665. 

  665.                     $info_asf_bitrate_mutual_exclusion_object['objectsize']    = $next_object_size;
    666. 

  666.                     $info_asf_bitrate_mutual_exclusion_object['reserved_guid'] = getid3_asf::BytestringToGUID(substr($asf_header_data, $offset, 16));
    667. 

  667.                     $offset += 16;
    668. 

  668. 

  669.                     if ($info_asf_bitrate_mutual_exclusion_object['reserved_guid'] != getid3_asf::Mutex_Bitrate  &&  $info_asf_bitrate_mutual_exclusion_object['reserved_guid'] != getid3_asf::Mutex_Unknown) {
    670. 

  670.                         $getid3->warning('bitrate_mutual_exclusion_object.reserved GUID {'.$info_asf_bitrate_mutual_exclusion_object['reserved_guid'].'} does not match expected "getid3_asf::Mutex_Bitrate" GUID {'.getid3_asf::Mutex_Bitrate.'} or  "getid3_asf::Mutex_Unknown" GUID {'.getid3_asf::Mutex_Unknown.'}');
    671. 

  671.                         break;
    672. 

  672.                     }
    673. 

  673. 

  674.                     $info_asf_bitrate_mutual_exclusion_object['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    675. 

  675.                     $offset += 2;
    676. 

  676. 

  677.                     for ($stream_number_counter = 0; $stream_number_counter < $info_asf_bitrate_mutual_exclusion_object['stream_numbers_count']; $stream_number_counter++) {
    678. 

  678.                         $info_asf_bitrate_mutual_exclusion_object['stream_numbers'][$stream_number_counter] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    679. 

  679.                         $offset += 2;
    680. 

  680.                     }
    681. 

  681.                     break;
    682. 

  682. 

  683. 

  684.                 case getid3_asf::Error_Correction_Object:
    685. 

  685. 

  686.                     // Error Correction Object: (optional, one only)
    687. 

  687.                     // Field Name                   Field Type   Size (bits)
    688. 

  688.                     // Object ID                    GUID         128             // GUID for Error Correction object - getid3_asf::Error_Correction_Object
    689. 

  689.                     // Object Size                  QWORD        64              // size of Error Correction object, including 44 bytes of Error Correction Object header
    690. 

  690.                     // Error Correction Type        GUID         128             // type of error correction. one of: (getid3_asf::No_Error_Correction, getid3_asf::Audio_Spread)
    691. 

  691.                     // Error Correction Data Length DWORD        32              // number of bytes in Error Correction Data field
    692. 

  692.                     // Error Correction Data        BYTESTREAM   variable        // structure depends on value of Error Correction Type field
    693. 

  693. 

  694.                     $info_asf['error_correction_object'] = array();
    695. 

  695.                     $info_asf_error_correction_object      = &$info_asf['error_correction_object'];
    696. 

  696. 

  697.                     $info_asf_error_correction_object['objectid_guid']         = $next_object_guidtext;
    698. 

  698.                     $info_asf_error_correction_object['objectsize']            = $next_object_size;
    699. 

  699.                     $info_asf_error_correction_object['error_correction_type'] = substr($asf_header_data, $offset, 16);
    700. 

  700.                     $offset += 16;
    701. 

  701. 

  702.                     $info_asf_error_correction_object['error_correction_guid']        = getid3_asf::BytestringToGUID($info_asf_error_correction_object['error_correction_type']);
    703. 

  703.                     $info_asf_error_correction_object['error_correction_data_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    704. 

  704.                     $offset += 4;
    705. 

  705. 

  706.                     switch ($info_asf_error_correction_object['error_correction_type_guid']) {
    707. 

  707. 

  708.                         case getid3_asf::No_Error_Correction:
    709. 

  709. 

  710.                             // should be no data, but just in case there is, skip to the end of the field
    711. 

  711.                             $offset += $info_asf_error_correction_object['error_correction_data_length'];
    712. 

  712.                             break;
    713. 

  713. 

  714. 

  715.                         case getid3_asf::Audio_Spread:
    716. 

  716. 

  717.                             // Field Name                   Field Type   Size (bits)
    718. 

  718.                             // Span                         BYTE         8               // number of packets over which audio will be spread.
    719. 

  719.                             // Virtual Packet Length        WORD         16              // size of largest audio payload found in audio stream
    720. 

  720.                             // Virtual Chunk Length         WORD         16              // size of largest audio payload found in audio stream
    721. 

  721.                             // Silence Data Length          WORD         16              // number of bytes in Silence Data field
    722. 

  722.                             // Silence Data                 BYTESTREAM   variable        // hardcoded: 0x00 * (Silence Data Length) bytes
    723. 

  723. 

  724.                             getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_error_correction_object, $asf_header_data, $offset,
    725. 

  725.                                 array(
    726. 

  726.                                     'span'                  => 1,
    727. 

  727.                                     'virtual_packet_length' => 2,
    728. 

  728.                                     'virtual_chunk_length'  => 2,
    729. 

  729.                                     'silence_data_length'   => 2
    730. 

  730.                                 )
    731. 

  731.                             );
    732. 

  732.                             $offset += 7;
    733. 

  733. 

  734.                             $info_asf_error_correction_object['silence_data'] = substr($asf_header_data, $offset, $info_asf_error_correction_object['silence_data_length']);
    735. 

  735.                             $offset += $info_asf_error_correction_object['silence_data_length'];
    736. 

  736.                             break;
    737. 

  737. 

  738.                         default:
    739. 

  739.                             $getid3->warning('error_correction_object.error_correction_type GUID {'.$info_asf_error_correction_object['reserved_guid'].'} does not match expected "getid3_asf::No_Error_Correction" GUID {'.getid3_asf::No_Error_Correction.'} or  "getid3_asf::Audio_Spread" GUID {'.getid3_asf::Audio_Spread.'}');
    740. 

  740.                             break;
    741. 

  741.                     }
    742. 

  742. 

  743.                     break;
    744. 

  744. 

  745. 

  746.                 case getid3_asf::Content_Description_Object:
    747. 

  747. 

  748.                     // Content Description Object: (optional, one only)
    749. 

  749.                     // Field Name                   Field Type   Size (bits)
    750. 

  750.                     // Object ID                    GUID         128             // GUID for Content Description object - getid3_asf::Content_Description_Object
    751. 

  751.                     // Object Size                  QWORD        64              // size of Content Description object, including 34 bytes of Content Description Object header
    752. 

  752.                     // Title Length                 WORD         16              // number of bytes in Title field
    753. 

  753.                     // Author Length                WORD         16              // number of bytes in Author field
    754. 

  754.                     // Copyright Length             WORD         16              // number of bytes in Copyright field
    755. 

  755.                     // Description Length           WORD         16              // number of bytes in Description field
    756. 

  756.                     // Rating Length                WORD         16              // number of bytes in Rating field
    757. 

  757.                     // Title                        WCHAR        16              // array of Unicode characters - Title
    758. 

  758.                     // Author                       WCHAR        16              // array of Unicode characters - Author
    759. 

  759.                     // Copyright                    WCHAR        16              // array of Unicode characters - Copyright
    760. 

  760.                     // Description                  WCHAR        16              // array of Unicode characters - Description
    761. 

  761.                     // Rating                       WCHAR        16              // array of Unicode characters - Rating
    762. 

  762. 

  763.                     $info_asf['content_description_object'] = array();
    764. 

  764.                     $info_asf_content_description_object      = &$info_asf['content_description_object'];
    765. 

  765. 

  766.                     $info_asf_content_description_object['objectid_guid'] = $next_object_guidtext;
    767. 

  767.                     $info_asf_content_description_object['objectsize']    = $next_object_size;
    768. 

  768. 

  769.                     getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_content_description_object, $asf_header_data, $offset,
    770. 

  770.                         array(
    771. 

  771.                             'title_length'       => 2,
    772. 

  772.                             'author_length'      => 2,
    773. 

  773.                             'copyright_length'   => 2,
    774. 

  774.                             'description_length' => 2,
    775. 

  775.                             'rating_length'      => 2
    776. 

  776.                         )
    777. 

  777.                     );
    778. 

  778.                     $offset += 10;
    779. 

  779. 

  780.                     $info_asf_content_description_object['title']       = substr($asf_header_data, $offset, $info_asf_content_description_object['title_length']);
    781. 

  781.                     $offset += $info_asf_content_description_object['title_length'];
    782. 

  782. 

  783.                     $info_asf_content_description_object['author']      = substr($asf_header_data, $offset, $info_asf_content_description_object['author_length']);
    784. 

  784.                     $offset += $info_asf_content_description_object['author_length'];
    785. 

  785. 

  786.                     $info_asf_content_description_object['copyright']   = substr($asf_header_data, $offset, $info_asf_content_description_object['copyright_length']);
    787. 

  787.                     $offset += $info_asf_content_description_object['copyright_length'];
    788. 

  788. 

  789.                     $info_asf_content_description_object['description'] = substr($asf_header_data, $offset, $info_asf_content_description_object['description_length']);
    790. 

  790.                     $offset += $info_asf_content_description_object['description_length'];
    791. 

  791. 

  792.                     $info_asf_content_description_object['rating']      = substr($asf_header_data, $offset, $info_asf_content_description_object['rating_length']);
    793. 

  793.                     $offset += $info_asf_content_description_object['rating_length'];
    794. 

  794. 

  795.                     foreach (array('title'=>'title', 'author'=>'artist', 'copyright'=>'copyright', 'description'=>'comment', 'rating'=>'rating') as $key_to_copy_from => $key_to_copy_to) {
    796. 

  796.                         if (!empty($info_asf_content_description_object[$key_to_copy_from])) {
    797. 

  797.                             $info_asf_comments[$key_to_copy_to][] = getid3_asf::TrimTerm($info_asf_content_description_object[$key_to_copy_from]);
    798. 

  798.                         }
    799. 

  799.                     }
    800. 

  800.                     break;
    801. 

  801. 

  802. 

  803.                 case getid3_asf::Extended_Content_Description_Object:
    804. 

  804. 

  805.                     // Extended Content Description Object: (optional, one only)
    806. 

  806.                     // Field Name                   Field Type   Size (bits)
    807. 

  807.                     // Object ID                    GUID         128             // GUID for Extended Content Description object - getid3_asf::Extended_Content_Description_Object
    808. 

  808.                     // Object Size                  QWORD        64              // size of ExtendedContent Description object, including 26 bytes of Extended Content Description Object header
    809. 

  809.                     // Content Descriptors Count    WORD         16              // number of entries in Content Descriptors list
    810. 

  810.                     // Content Descriptors          array of:    variable        //
    811. 

  811.                     // * Descriptor Name Length     WORD         16              // size in bytes of Descriptor Name field
    812. 

  812.                     // * Descriptor Name            WCHAR        variable        // array of Unicode characters - Descriptor Name
    813. 

  813.                     // * Descriptor Value Data Type WORD         16              // Lookup array:
    814. 

  814.                                                                                     // 0x0000 = Unicode String (variable length)
    815. 

  815.                                                                                     // 0x0001 = BYTE array     (variable length)
    816. 

  816.                                                                                     // 0x0002 = BOOL           (DWORD, 32 bits)
    817. 

  817.                                                                                     // 0x0003 = DWORD          (DWORD, 32 bits)
    818. 

  818.                                                                                     // 0x0004 = QWORD          (QWORD, 64 bits)
    819. 

  819.                                                                                     // 0x0005 = WORD           (WORD,  16 bits)
    820. 

  820.                     // * Descriptor Value Length    WORD         16              // number of bytes stored in Descriptor Value field
    821. 

  821.                     // * Descriptor Value           variable     variable        // value for Content Descriptor
    822. 

  822. 

  823.                     $info_asf['extended_content_description_object'] = array();
    824. 

  824.                     $info_asf_extended_content_description_object       = &$info_asf['extended_content_description_object'];
    825. 

  825. 

  826.                     $info_asf_extended_content_description_object['objectid_guid']             = $next_object_guidtext;
    827. 

  827.                     $info_asf_extended_content_description_object['objectsize']                = $next_object_size;
    828. 

  828.                     $info_asf_extended_content_description_object['content_descriptors_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    829. 

  829.                     $offset += 2;
    830. 

  830. 

  831.                     for ($extended_content_descriptors_counter = 0; $extended_content_descriptors_counter < $info_asf_extended_content_description_object['content_descriptors_count']; $extended_content_descriptors_counter++) {
    832. 

  832. 

  833.                         $info_asf_extended_content_description_object['content_descriptors'][$extended_content_descriptors_counter] = array();
    834. 

  834.                         $info_asf_extended_content_description_object_content_descriptor_current                                  = &$info_asf_extended_content_description_object['content_descriptors'][$extended_content_descriptors_counter];
    835. 

  835. 

  836.                         $info_asf_extended_content_description_object_content_descriptor_current['base_offset']  = $offset + 30;
    837. 

  837.                         $info_asf_extended_content_description_object_content_descriptor_current['name_length']  = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    838. 

  838.                         $offset += 2;
    839. 

  839. 

  840.                         $info_asf_extended_content_description_object_content_descriptor_current['name']         = substr($asf_header_data, $offset, $info_asf_extended_content_description_object_content_descriptor_current['name_length']);
    841. 

  841.                         $offset += $info_asf_extended_content_description_object_content_descriptor_current['name_length'];
    842. 

  842. 

  843.                         $info_asf_extended_content_description_object_content_descriptor_current['value_type']   = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    844. 

  844.                         $offset += 2;
    845. 

  845. 

  846.                         $info_asf_extended_content_description_object_content_descriptor_current['value_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    847. 

  847.                         $offset += 2;
    848. 

  848. 

  849.                         $info_asf_extended_content_description_object_content_descriptor_current['value']        = substr($asf_header_data, $offset, $info_asf_extended_content_description_object_content_descriptor_current['value_length']);
    850. 

  850.                         $offset += $info_asf_extended_content_description_object_content_descriptor_current['value_length'];
    851. 

  851. 

  852.                         switch ($info_asf_extended_content_description_object_content_descriptor_current['value_type']) {
    853. 

  853. 

  854.                             case 0x0000: // Unicode string
    855. 

  855.                                 break;
    856. 

  856. 

  857.                             case 0x0001: // BYTE array
    858. 

  858.                                 // do nothing
    859. 

  859.                                 break;
    860. 

  860. 

  861.                             case 0x0002: // BOOL
    862. 

  862.                                 $info_asf_extended_content_description_object_content_descriptor_current['value'] = (bool)getid3_lib::LittleEndian2Int($info_asf_extended_content_description_object_content_descriptor_current['value']);
    863. 

  863.                                 break;
    864. 

  864. 

  865.                             case 0x0003: // DWORD
    866. 

  866.                             case 0x0004: // QWORD
    867. 

  867.                             case 0x0005: // WORD
    868. 

  868.                                 $info_asf_extended_content_description_object_content_descriptor_current['value'] = getid3_lib::LittleEndian2Int($info_asf_extended_content_description_object_content_descriptor_current['value']);
    869. 

  869.                                 break;
    870. 

  870. 

  871.                             default:
    872. 

  872.                                 $getid3->warning('extended_content_description.content_descriptors.'.$extended_content_descriptors_counter.'.value_type is invalid ('.$info_asf_extended_content_description_object_content_descriptor_current['value_type'].')');
    873. 

  873.                                 break;
    874. 

  874.                         }
    875. 

  875. 

  876.                         switch ($this->TrimConvert(strtolower($info_asf_extended_content_description_object_content_descriptor_current['name']))) {
    877. 

  877. 

  878.                             case 'wm/albumartist':
    879. 

  879.                             case 'artist':
    880. 

  880.                                 $info_asf_comments['albumartist'] = array(getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    881. 

  881.                                 break;
    882. 

  882. 

  883. 

  884.                             case 'wm/albumtitle':
    885. 

  885.                             case 'album':
    886. 

  886.                                 $info_asf_comments['album']  = array(getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    887. 

  887.                                 break;
    888. 

  888. 

  889. 

  890.                             case 'wm/genre':
    891. 

  891.                             case 'genre':
    892. 

  892.                                 $genre = getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']);
    893. 

  893.                                 $info_asf_comments['genre'] = array($genre);
    894. 

  894.                                 break;
    895. 

  895. 

  896. 

  897.                             case 'wm/tracknumber':
    898. 

  898.                             case 'tracknumber':
    899. 

  899. 								// be careful casting to int: casting unicode strings to int gives unexpected results (stops parsing at first non-numeric character)
    900. 

  900. 								$info_asf_comments['track'] = array(getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    901. 

  901. 								foreach ($info_asf_comments['track'] as $key => $value) {
    902. 

  902. 									if (preg_match('/^[0-9\x00]+$/', $value)) {
    903. 

  903. 										$info_asf_comments['track'][$key] = intval(str_replace("\x00", '', $value));
    904. 

  904. 									}
    905. 

  905. 								}
    906. 

  906.                                 break;
    907. 

  907. 

  908. 

  909.                             case 'wm/partofset':
    910. 

  910.                                 $info_asf_comments['partofset'] = array(getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    911. 

  911.                                 break;
    912. 

  912. 

  913. 

  914.                             case 'wm/track':
    915. 

  915.                                 if (empty($info_asf_comments['track'])) {
    916. 

  916.                                     $info_asf_comments['track'] = array(1 + $this->TrimConvert($info_asf_extended_content_description_object_content_descriptor_current['value']));
    917. 

  917.                                 }
    918. 

  918.                                 break;
    919. 

  919. 

  920. 

  921.                             case 'wm/year':
    922. 

  922.                             case 'year':
    923. 

  923.                             case 'date':
    924. 

  924.                                 $info_asf_comments['year'] = array( getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    925. 

  925.                                 break;
    926. 

  926. 

  927. 

  928.                             case 'wm/lyrics':
    929. 

  929.                             case 'lyrics':
    930. 

  930.                                 $info_asf_comments['lyrics'] = array( getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    931. 

  931.   	                            break;
    932. 

  932. 

  933. 

  934.                             case 'isvbr':
    935. 

  935.                                 if ($info_asf_extended_content_description_object_content_descriptor_current['value']) {
    936. 

  936.                                     $info_audio['bitrate_mode'] = 'vbr';
    937. 

  937.                                     $info_video['bitrate_mode'] = 'vbr';
    938. 

  938.                                 }
    939. 

  939.                                 break;
    940. 

  940. 

  941. 

  942.                             case 'id3':
    943. 

  943. 

  944. 								// id3v2 parsing might not be enabled
    945. 

  945. 								if (class_exists('getid3_id3v2')) {
    946. 

  946. 

  947. 									// Clone getid3
    948. 

  948.                                     $clone = clone $getid3;
    949. 

  949. 

  950.                                     // Analyse clone by string
    951. 

  951.                                     $id3v2 = new getid3_id3v2($clone);
    952. 

  952.                                     $id3v2->AnalyzeString($info_asf_extended_content_description_object_content_descriptor_current['value']);
    953. 

  953. 

  954.                                     // Import from clone and destroy
    955. 

  955.                                     $getid3->info['id3v2'] = $clone->info['id3v2'];
    956. 

  956.                                     $getid3->warnings($clone->warnings());
    957. 

  957.                                     unset($clone);
    958. 

  958. 								}
    959. 

  959. 								break;
    960. 

  960. 

  961. 

  962.                             case 'wm/encodingtime':
    963. 

  963.                                 $info_asf_extended_content_description_object_content_descriptor_current['encoding_time_unix'] = getid3_asf::FiletimeToUNIXtime($info_asf_extended_content_description_object_content_descriptor_current['value']);
    964. 

  964.                                 $info_asf_comments['encoding_time_unix'] = array($info_asf_extended_content_description_object_content_descriptor_current['encoding_time_unix']);
    965. 

  965.                                 break;
    966. 

  966. 

  967. 

  968.                             case 'wm/picture':
    969. 

  969. 

  970.                                 //typedef struct _WMPicture{
    971. 

  971.                                 //  LPWSTR  pwszMIMEType;
    972. 

  972.                                 //  BYTE  bPictureType;
    973. 

  973.                                 //  LPWSTR  pwszDescription;
    974. 

  974.                                 //  DWORD  dwDataLen;
    975. 

  975.                                 //  BYTE*  pbData;
    976. 

  976.                                 //} WM_PICTURE;
    977. 

  977. 

  978.                                 $info_asf_extended_content_description_object_content_descriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int($info_asf_extended_content_description_object_content_descriptor_current['value']{0});
    979. 

  979.                                 $info_asf_extended_content_description_object_content_descriptor_current['image_type']    = getid3_asf::WMpictureTypeLookup($info_asf_extended_content_description_object_content_descriptor_current['image_type_id']);
    980. 

  980.                                 $info_asf_extended_content_description_object_content_descriptor_current['image_size']    = getid3_lib::LittleEndian2Int(substr($info_asf_extended_content_description_object_content_descriptor_current['value'], 1, 4));
    981. 

  981.                                 $info_asf_extended_content_description_object_content_descriptor_current['image_mime']   = '';
    982. 

  982. 

  983.                                 $wm_picture_offset = 5;
    984. 

  984. 

  985.                                 do {
    986. 

  986.                                     $next_byte_pair = substr($info_asf_extended_content_description_object_content_descriptor_current['value'], $wm_picture_offset, 2);
    987. 

  987.                                     $wm_picture_offset += 2;
    988. 

  988.                                     $info_asf_extended_content_description_object_content_descriptor_current['image_mime'] .= $next_byte_pair;
    989. 

  989.                                 } while ($next_byte_pair !== "\x00\x00");
    990. 

  990. 

  991.                                 $info_asf_extended_content_description_object_content_descriptor_current['image_description'] = '';
    992. 

  992. 

  993.                                 do {
    994. 

  994.                                     $next_byte_pair = substr($info_asf_extended_content_description_object_content_descriptor_current['value'], $wm_picture_offset, 2);
    995. 

  995.                                     $wm_picture_offset += 2;
    996. 

  996.                                     $info_asf_extended_content_description_object_content_descriptor_current['image_description'] .= $next_byte_pair;
    997. 

  997.                                 } while ($next_byte_pair !== "\x00\x00");
    998. 

  998. 

  999.                                 $info_asf_extended_content_description_object_content_descriptor_current['dataoffset'] = $wm_picture_offset;
    1000. 

  1000.                                 $info_asf_extended_content_description_object_content_descriptor_current['data']       = substr($info_asf_extended_content_description_object_content_descriptor_current['value'], $wm_picture_offset);
    1001. 

  1001.                                 unset($info_asf_extended_content_description_object_content_descriptor_current['value']);
    1002. 

  1002. 								$info_asf_comments['picture'] = $info_asf_extended_content_description_object_content_descriptor_current['data'];
    1003. 

  1003.                                 break;
    1004. 

  1004. 

  1005.                             default:
    1006. 

  1006.                                 switch ($info_asf_extended_content_description_object_content_descriptor_current['value_type']) {
    1007. 

  1007.                                     case 0: // Unicode string
    1008. 

  1008.                                         if (substr($this->TrimConvert($info_asf_extended_content_description_object_content_descriptor_current['name']), 0, 3) == 'WM/') {
    1009. 

  1009.                                             $info_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($info_asf_extended_content_description_object_content_descriptor_current['name'])))] = array(getid3_asf::TrimTerm($info_asf_extended_content_description_object_content_descriptor_current['value']));
    1010. 

  1010.                                         }
    1011. 

  1011.                                         break;
    1012. 

  1012. 

  1013.                                     case 1:
    1014. 

  1014.                                         break;
    1015. 

  1015.                                 }
    1016. 

  1016.                                 break;
    1017. 

  1017.                         }
    1018. 

  1018. 

  1019.                     }
    1020. 

  1020.                     break;
    1021. 

  1021. 

  1022. 

  1023.                 case getid3_asf::Stream_Bitrate_Properties_Object:
    1024. 

  1024. 

  1025.                     // Stream Bitrate Properties Object: (optional, one only)
    1026. 

  1026.                     // Field Name                   Field Type   Size (bits)
    1027. 

  1027.                     // Object ID                    GUID         128             // GUID for Stream Bitrate Properties object - getid3_asf::Stream_Bitrate_Properties_Object
    1028. 

  1028.                     // Object Size                  QWORD        64              // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header
    1029. 

  1029.                     // Bitrate Records Count        WORD         16              // number of records in Bitrate Records
    1030. 

  1030.                     // Bitrate Records              array of:    variable        //
    1031. 

  1031.                     // * Flags                      WORD         16              //
    1032. 

  1032.                     // * * Stream Number            bits         7  (0x007F)     // number of this stream
    1033. 

  1033.                     // * * Reserved                 bits         9  (0xFF80)     // hardcoded: 0
    1034. 

  1034.                     // * Average Bitrate            DWORD        32              // in bits per second
    1035. 

  1035. 

  1036.                     // shortcut
    1037. 

  1037.                     $info_asf['stream_bitrate_properties_object'] = array();
    1038. 

  1038.                     $info_asf_stream_bitrate_properties_object = &$info_asf['stream_bitrate_properties_object'];
    1039. 

  1039. 

  1040.                     $info_asf_stream_bitrate_properties_object['objectid_guid']         = $next_object_guidtext;
    1041. 

  1041.                     $info_asf_stream_bitrate_properties_object['objectsize']            = $next_object_size;
    1042. 

  1042.                     $info_asf_stream_bitrate_properties_object['bitrate_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    1043. 

  1043.                     $offset += 2;
    1044. 

  1044. 

  1045.                     for ($bitrate_records_counter = 0; $bitrate_records_counter < $info_asf_stream_bitrate_properties_object['bitrate_records_count']; $bitrate_records_counter++) {
    1046. 

  1046. 

  1047.                         $info_asf_stream_bitrate_properties_object['bitrate_records'][$bitrate_records_counter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 2));
    1048. 

  1048.                         $offset += 2;
    1049. 

  1049. 

  1050.                         $info_asf_stream_bitrate_properties_object['bitrate_records'][$bitrate_records_counter]['flags']['stream_number'] = $info_asf_stream_bitrate_properties_object['bitrate_records'][$bitrate_records_counter]['flags_raw'] & 0x007F;
    1051. 

  1051. 

  1052.                         $info_asf_stream_bitrate_properties_object['bitrate_records'][$bitrate_records_counter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($asf_header_data, $offset, 4));
    1053. 

  1053.                         $offset += 4;
    1054. 

  1054.                     }
    1055. 

  1055.                     break;
    1056. 

  1056. 

  1057. 

  1058.                 case getid3_asf::Padding_Object:
    1059. 

  1059. 

  1060.                     // Padding Object: (optional)
    1061. 

  1061.                     // Field Name                   Field Type   Size (bits)
    1062. 

  1062.                     // Object ID                    GUID         128             // GUID for Padding object - getid3_asf::Padding_Object
    1063. 

  1063.                     // Object Size                  QWORD        64              // size of Padding object, including 24 bytes of ASF Padding Object header
    1064. 

  1064.                     // Padding Data                 BYTESTREAM   variable        // ignore
    1065. 

  1065. 

  1066.                     // shortcut
    1067. 

  1067.                     $info_asf['padding_object'] = array();
    1068. 

  1068.                     $info_asf_paddingobject     = &$info_asf['padding_object'];
    1069. 

  1069. 

  1070.                     $info_asf_paddingobject['objectid_guid']  = $next_object_guidtext;
    1071. 

  1071.                     $info_asf_paddingobject['objectsize']     = $next_object_size;
    1072. 

  1072.                     $info_asf_paddingobject['padding_length'] = $info_asf_paddingobject['objectsize'] - 16 - 8;
    1073. 

  1073.                     $info_asf_paddingobject['padding']        = substr($asf_header_data, $offset, $info_asf_paddingobject['padding_length']);
    1074. 

  1074.                     $offset += ($next_object_size - 16 - 8);
    1075. 

  1075.                     break;
    1076. 

  1076. 

  1077. 

  1078.                 case getid3_asf::Extended_Content_Encryption_Object:
    1079. 

  1079.                 case getid3_asf::Content_Encryption_Object:
    1080. 

  1080. 

  1081.                     // WMA DRM - just ignore
    1082. 

  1082.                     $offset += ($next_object_size - 16 - 8);
    1083. 

  1083.                     break;
    1084. 

  1084. 

  1085. 

  1086.                 default:
    1087. 

  1087. 

  1088.                     // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
    1089. 

  1089.                     if (getid3_asf::GUIDname($next_object_guidtext)) {
    1090. 

  1090.                         $getid3->warning('unhandled GUID "'.getid3_asf::GUIDname($next_object_guidtext).'" {'.$next_object_guidtext.'} in ASF header at offset '.($offset - 16 - 8));
    1091. 

  1091.                     } else {
    1092. 

  1092.                         $getid3->warning('unknown GUID {'.$next_object_guidtext.'} in ASF header at offset '.($offset - 16 - 8));
    1093. 

  1093.                     }
    1094. 

  1094.                     $offset += ($next_object_size - 16 - 8);
    1095. 

  1095.                     break;
    1096. 

  1096.             }
    1097. 

  1097.         }
    1098. 

  1098. 

  1099.         if (isset($info_asf_stream_bitrate_properties['bitrate_records_count'])) {
    1100. 

  1100.             $asf_bitrate_audio = 0;
    1101. 

  1101.             $asf_bitrate_video = 0;
    1102. 

  1102. 

  1103.             for ($bitrate_records_counter = 0; $bitrate_records_counter < $info_asf_stream_bitrate_properties['bitrate_records_count']; $bitrate_records_counter++) {
    1104. 

  1104.                 if (isset($info_asf_codec_list_object['codec_entries'][$bitrate_records_counter])) {
    1105. 

  1105.                     switch ($info_asf_codec_list_object['codec_entries'][$bitrate_records_counter]['type_raw']) {
    1106. 

  1106. 

  1107.                         case 1:
    1108. 

  1108.                             $asf_bitrate_video += $info_asf_stream_bitrate_properties['bitrate_records'][$bitrate_records_counter]['bitrate'];
    1109. 

  1109.                             break;
    1110. 

  1110. 

  1111.                         case 2:
    1112. 

  1112.                             $asf_bitrate_audio += $info_asf_stream_bitrate_properties['bitrate_records'][$bitrate_records_counter]['bitrate'];
    1113. 

  1113.                             break;
    1114. 

  1114.                     }
    1115. 

  1115.                 }
    1116. 

  1116.             }
    1117. 

  1117.             if ($asf_bitrate_audio > 0) {
    1118. 

  1118.                 $info_audio['bitrate'] = $asf_bitrate_audio;
    1119. 

  1119.             }
    1120. 

  1120.             if ($asf_bitrate_video > 0) {
    1121. 

  1121.                 $info_video['bitrate'] = $asf_bitrate_video;
    1122. 

  1122.             }
    1123. 

  1123.         }
    1124. 

  1124. 

  1125.         if (isset($info_asf['stream_properties_object']) && is_array($info_asf['stream_properties_object'])) {
    1126. 

  1126. 

  1127.             $info_audio['bitrate'] = 0;
    1128. 

  1128.             $info_video['bitrate'] = 0;
    1129. 

  1129. 

  1130.             foreach ($info_asf['stream_properties_object'] as $stream_number => $stream_data) {
    1131. 

  1131. 

  1132.                 switch ($stream_data['stream_type_guid']) {
    1133. 

  1133. 

  1134.                     case getid3_asf::Audio_Media:
    1135. 

  1135. 

  1136.                         // Field Name                   Field Type   Size (bits)
    1137. 

  1137.                         // Codec ID / Format Tag        WORD         16              // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure
    1138. 

  1138.                         // Number of Channels           WORD         16              // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure
    1139. 

  1139.                         // Samples Per Second           DWORD        32              // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure
    1140. 

  1140.                         // Average number of Bytes/sec  DWORD        32              // bytes/sec of audio stream  - defined as nAvgBytesPerSec field of WAVEFORMATEX structure
    1141. 

  1141.                         // Block Alignment              WORD         16              // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure
    1142. 

  1142.                         // 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
    1143. 

  1143.                         // Codec Specific Data Size     WORD         16              // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure
    1144. 

  1144.                         // Codec Specific Data          BYTESTREAM   variable        // array of codec-specific data bytes
    1145. 

  1145. 

  1146.                         // shortcut
    1147. 

  1147.                         $info_asf['audio_media'][$stream_number] = array();
    1148. 

  1148.                         $info_asf_audio_media_current_stream     = &$info_asf['audio_media'][$stream_number];
    1149. 

  1149. 

  1150.                         $audio_media_offset = 0;
    1151. 

  1151. 

  1152.                         $info_asf_audio_media_current_stream = getid3_riff::RIFFparseWAVEFORMATex(substr($stream_data['type_specific_data'], $audio_media_offset, 16));
    1153. 

  1153. 

  1154.                         $audio_media_offset += 16;
    1155. 

  1155. 

  1156.                         $info_audio['lossless'] = false;
    1157. 

  1157.                         switch ($info_asf_audio_media_current_stream['raw']['wFormatTag']) {
    1158. 

  1158.                             case 0x0001: // PCM
    1159. 

  1159.                             case 0x0163: // WMA9 Lossless
    1160. 

  1160.                                 $info_audio['lossless'] = true;
    1161. 

  1161.                                 break;
    1162. 

  1162.                         }
    1163. 

  1163. 

  1164.                         if (!empty($info_asf['stream_bitrate_properties_object']['bitrate_records'])) {
    1165. 

  1165. 							foreach ($info_asf['stream_bitrate_properties_object']['bitrate_records'] as $data_array) {
    1166. 

  1166. 								if (@$data_array['flags']['stream_number'] == $stream_number) {
    1167. 

  1167. 									$info_asf_audio_media_current_stream['bitrate'] = $data_array['bitrate'];
    1168. 

  1168. 									$info_audio['bitrate'] += $data_array['bitrate'];
    1169. 

  1169. 									break;
    1170. 

  1170. 								}
    1171. 

  1171. 							}
    1172. 

  1172. 						} else {
    1173. 

  1173. 							if (@$info_asf_audio_media_current_stream['bytes_sec']) {
    1174. 

  1174. 								$info_audio['bitrate'] += $info_asf_audio_media_current_stream['bytes_sec'] * 8;
    1175. 

  1175. 							} elseif (@$info_asf_audio_media_current_stream['bitrate']) {
    1176. 

  1176. 								$info_audio['bitrate'] += $info_asf_audio_media_current_stream['bitrate'];
    1177. 

  1177. 							}
    1178. 

  1178. 						}
    1179. 

  1179. 

  1180.                         $info_audio['streams'][$stream_number]                  = $info_asf_audio_media_current_stream;
    1181. 

  1181.                         $info_audio['streams'][$stream_number]['wformattag']    = $info_asf_audio_media_current_stream['raw']['wFormatTag'];
    1182. 

  1182.                         $info_audio['streams'][$stream_number]['lossless']      = $info_audio['lossless'];
    1183. 

  1183.                         $info_audio['streams'][$stream_number]['bitrate']       = $info_audio['bitrate'];
    1184. 

  1184.                         unset($info_audio['streams'][$stream_number]['raw']);
    1185. 

  1185. 

  1186.                         $info_asf_audio_media_current_stream['codec_data_size'] = getid3_lib::LittleEndian2Int(substr($stream_data['type_specific_data'], $audio_media_offset, 2));
    1187. 

  1187.                         $audio_media_offset += 2;
    1188. 

  1188. 

  1189.                         $info_asf_audio_media_current_stream['codec_data']      = substr($stream_data['type_specific_data'], $audio_media_offset, $info_asf_audio_media_current_stream['codec_data_size']);
    1190. 

  1190.                         $audio_media_offset += $info_asf_audio_media_current_stream['codec_data_size'];
    1191. 

  1191.                         break;
    1192. 

  1192. 

  1193. 

  1194.                     case getid3_asf::Video_Media:
    1195. 

  1195. 

  1196.                         // Field Name                   Field Type   Size (bits)
    1197. 

  1197.                         // Encoded Image Width          DWORD        32              // width of image in pixels
    1198. 

  1198.                         // Encoded Image Height         DWORD        32              // height of image in pixels
    1199. 

  1199.                         // Reserved Flags               BYTE         8               // hardcoded: 0x02
    1200. 

  1200.                         // Format Data Size             WORD         16              // size of Format Data field in bytes
    1201. 

  1201.                         // Format Data                  array of:    variable        //
    1202. 

  1202.                         // * Format Data Size           DWORD        32              // number of bytes in Format Data field, in bytes - defined as biSize field of BITMAPINFOHEADER structure
    1203. 

  1203.                         // * Image Width                LONG         32              // width of encoded image in pixels - defined as biWidth field of BITMAPINFOHEADER structure
    1204. 

  1204.                         // * Image Height               LONG         32              // height of encoded image in pixels - defined as biHeight field of BITMAPINFOHEADER structure
    1205. 

  1205.                         // * Reserved                   WORD         16              // hardcoded: 0x0001 - defined as biPlanes field of BITMAPINFOHEADER structure
    1206. 

  1206.                         // * Bits Per Pixel Count       WORD         16              // bits per pixel - defined as biBitCount field of BITMAPINFOHEADER structure
    1207. 

  1207.                         // * Compression ID             FOURCC       32              // fourcc of video codec - defined as biCompression field of BITMAPINFOHEADER structure
    1208. 

  1208.                         // * Image Size                 DWORD        32              // image size in bytes - defined as biSizeImage field of BITMAPINFOHEADER structure
    1209. 

  1209.                         // * Horizontal Pixels / Meter  DWORD        32              // horizontal resolution of target device in pixels per meter - defined as biXPelsPerMeter field of BITMAPINFOHEADER structure
    1210. 

  1210.                         // * Vertical Pixels / Meter    DWORD        32              // vertical resolution of target device in pixels per meter - defined as biYPelsPerMeter field of BITMAPINFOHEADER structure
    1211. 

  1211.                         // * Colors Used Count          DWORD        32              // number of color indexes in the color table that are actually used - defined as biClrUsed field of BITMAPINFOHEADER structure
    1212. 

  1212.                         // * 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
    1213. 

  1213.                         // * Codec Specific Data        BYTESTREAM   variable        // array of codec-specific data bytes
    1214. 

  1214. 

  1215.                         $info_asf['video_media'][$stream_number] = array();
    1216. 

  1216.                         $info_asf_video_media_current_stream     = &$info_asf['video_media'][$stream_number];
    1217. 

  1217. 

  1218.                         getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_video_media_current_stream, $stream_data['type_specific_data'], 0,
    1219. 

  1219.                             array(
    1220. 

  1220.                                 'image_width'     => 4,
    1221. 

  1221.                                 'image_height'    => 4,
    1222. 

  1222.                                 'flags'           => 1,
    1223. 

  1223.                                 'format_data_size'=> 2
    1224. 

  1224.                             )
    1225. 

  1225.                         );
    1226. 

  1226. 

  1227.                         getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_video_media_current_stream['format_data'], $stream_data['type_specific_data'], 11,
    1228. 

  1228.                             array(
    1229. 

  1229.                                 'format_data_size' => 4,
    1230. 

  1230.                                 'image_width'      => 4,
    1231. 

  1231.                                 'image_height'     => 4,
    1232. 

  1232.                                 'reserved'         => 2,
    1233. 

  1233.                                 'bits_per_pixel'   => 2,
    1234. 

  1234.                                 'codec_fourcc'     => -4,
    1235. 

  1235.                                 'image_size'       => 4,
    1236. 

  1236.                                 'horizontal_pels'  => 4,
    1237. 

  1237.                                 'vertical_pels'    => 4,
    1238. 

  1238.                                 'colors_used'      => 4,
    1239. 

  1239.                                 'colors_important' => 4
    1240. 

  1240.                             )
    1241. 

  1241.                         );
    1242. 

  1242. 

  1243.                         $info_asf_video_media_current_stream['format_data']['codec_data'] = substr($stream_data['type_specific_data'], 51);
    1244. 

  1244. 

  1245.                         if (!empty($info_asf['stream_bitrate_properties_object']['bitrate_records'])) {
    1246. 

  1246.                             foreach ($info_asf['stream_bitrate_properties_object']['bitrate_records'] as $data_array) {
    1247. 

  1247.                                 if (@$data_array['flags']['stream_number'] == $stream_number) {
    1248. 

  1248.                                     $info_asf_video_media_current_stream['bitrate']   = $data_array['bitrate'];
    1249. 

  1249.                                     $info_video['streams'][$stream_number]['bitrate'] = $data_array['bitrate'];
    1250. 

  1250.                                     $info_video['bitrate'] += $data_array['bitrate'];
    1251. 

  1251. 

  1252.                                     break;
    1253. 

  1253.                                 }
    1254. 

  1254.                             }
    1255. 

  1255.                         }
    1256. 

  1256. 

  1257.                         $info_asf_video_media_current_stream['format_data']['codec'] = getid3_riff::RIFFfourccLookup($info_asf_video_media_current_stream['format_data']['codec_fourcc']);
    1258. 

  1258. 

  1259.                         $info_video['streams'][$stream_number]['fourcc']          = $info_asf_video_media_current_stream['format_data']['codec_fourcc'];
    1260. 

  1260.                         $info_video['streams'][$stream_number]['codec']           = $info_asf_video_media_current_stream['format_data']['codec'];
    1261. 

  1261.                         $info_video['streams'][$stream_number]['resolution_x']    = $info_asf_video_media_current_stream['image_width'];
    1262. 

  1262.                         $info_video['streams'][$stream_number]['resolution_y']    = $info_asf_video_media_current_stream['image_height'];
    1263. 

  1263.                         $info_video['streams'][$stream_number]['bits_per_sample'] = $info_asf_video_media_current_stream['format_data']['bits_per_pixel'];
    1264. 

  1264.                         break;
    1265. 

  1265. 

  1266.                     default:
    1267. 

  1267.                         break;
    1268. 

  1268.                 }
    1269. 

  1269.             }
    1270. 

  1270.         }
    1271. 

  1271. 

  1272.         while (ftell($getid3->fp) < $getid3->info['avdataend']) {
    1273. 

  1273. 

  1274.             $next_object_data_header = fread($getid3->fp, 24);
    1275. 

  1275.             $offset = 0;
    1276. 

  1276. 

  1277.             $next_object_guid = substr($next_object_data_header, 0, 16);
    1278. 

  1278.             $offset += 16;
    1279. 

  1279. 

  1280.             $next_object_guidtext = getid3_asf::BytestringToGUID($next_object_guid);
    1281. 

  1281.             $next_object_size     = getid3_lib::LittleEndian2Int(substr($next_object_data_header, $offset, 8));
    1282. 

  1282.             $offset += 8;
    1283. 

  1283. 

  1284.             switch ($next_object_guidtext) {
    1285. 

  1285. 

  1286.                 case getid3_asf::Data_Object:
    1287. 

  1287. 

  1288.                     // Data Object: (mandatory, one only)
    1289. 

  1289.                     // Field Name                       Field Type   Size (bits)
    1290. 

  1290.                     // Object ID                        GUID         128             // GUID for Data object - getid3_asf::Data_Object
    1291. 

  1291.                     // Object Size                      QWORD        64              // size of Data object, including 50 bytes of Data Object header. may be 0 if FilePropertiesObject.BroadcastFlag == 1
    1292. 

  1292.                     // File ID                          GUID         128             // unique identifier. identical to File ID field in Header Object
    1293. 

  1293.                     // Total Data Packets               QWORD        64              // number of Data Packet entries in Data Object. invalid if FilePropertiesObject.BroadcastFlag == 1
    1294. 

  1294.                     // Reserved                         WORD         16              // hardcoded: 0x0101
    1295. 

  1295. 

  1296.                     // shortcut
    1297. 

  1297.                     $info_asf['data_object'] = array();
    1298. 

  1298.                     $info_asf_data_object    = &$info_asf['data_object'];
    1299. 

  1299. 

  1300.                     $data_object_data = $next_object_data_header.fread($getid3->fp, 50 - 24);
    1301. 

  1301.                     $offset = 24;
    1302. 

  1302. 

  1303.                     $info_asf_data_object['objectid_guid']      = $next_object_guidtext;
    1304. 

  1304.                     $info_asf_data_object['objectsize']         = $next_object_size;
    1305. 

  1305. 

  1306.                     $info_asf_data_object['fileid_guid']        = getid3_asf::BytestringToGUID(substr($data_object_data, $offset, 16));
    1307. 

  1307.                     $offset += 16;
    1308. 

  1308. 

  1309.                     $info_asf_data_object['total_data_packets'] = getid3_lib::LittleEndian2Int(substr($data_object_data, $offset, 8));
    1310. 

  1310.                     $offset += 8;
    1311. 

  1311. 

  1312.                     $info_asf_data_object['reserved']           = getid3_lib::LittleEndian2Int(substr($data_object_data, $offset, 2));
    1313. 

  1313.                     $offset += 2;
    1314. 

  1314. 

  1315.                     if ($info_asf_data_object['reserved'] != 0x0101) {
    1316. 

  1316.                         $getid3->warning('data_object.reserved ('.getid3_lib::PrintHexBytes($info_asf_data_object['reserved']).') does not match expected value of "0x0101"');
    1317. 

  1317.                         break;
    1318. 

  1318.                     }
    1319. 

  1319. 

  1320.                     // Data Packets                     array of:    variable        //
    1321. 

  1321.                     // * Error Correction Flags         BYTE         8               //
    1322. 

  1322.                     // * * Error Correction Data Length bits         4               // if Error Correction Length Type == 00, size of Error Correction Data in bytes, else hardcoded: 0000
    1323. 

  1323.                     // * * Opaque Data Present          bits         1               //
    1324. 

  1324.                     // * * Error Correction Length Type bits         2               // number of bits for size of the error correction data. hardcoded: 00
    1325. 

  1325.                     // * * Error Correction Present     bits         1               // If set, use Opaque Data Packet structure, else use Payload structure
    1326. 

  1326.                     // * Error Correction Data
    1327. 

  1327. 

  1328.                     $getid3->info['avdataoffset'] = ftell($getid3->fp);
    1329. 

  1329.                     fseek($getid3->fp, ($info_asf_data_object['objectsize'] - 50), SEEK_CUR); // skip actual audio/video data
    1330. 

  1330.                     $getid3->info['avdataend'] = ftell($getid3->fp);
    1331. 

  1331.                     break;
    1332. 

  1332. 

  1333. 

  1334.                 case getid3_asf::Simple_Index_Object:
    1335. 

  1335. 

  1336.                     // Simple Index Object: (optional, recommended, one per video stream)
    1337. 

  1337.                     // Field Name                       Field Type   Size (bits)
    1338. 

  1338.                     // Object ID                        GUID         128             // GUID for Simple Index object - getid3_asf::Data_Object
    1339. 

  1339.                     // Object Size                      QWORD        64              // size of Simple Index object, including 56 bytes of Simple Index Object header
    1340. 

  1340.                     // File ID                          GUID         128             // unique identifier. may be zero or identical to File ID field in Data Object and Header Object
    1341. 

  1341.                     // Index Entry Time Interval        QWORD        64              // interval between index entries in 100-nanosecond units
    1342. 

  1342.                     // Maximum Packet Count             DWORD        32              // maximum packet count for all index entries
    1343. 

  1343.                     // Index Entries Count              DWORD        32              // number of Index Entries structures
    1344. 

  1344.                     // Index Entries                    array of:    variable        //
    1345. 

  1345.                     // * Packet Number                  DWORD        32              // number of the Data Packet associated with this index entry
    1346. 

  1346.                     // * Packet Count                   WORD         16              // number of Data Packets to sent at this index entry
    1347. 

  1347. 

  1348.                     // shortcut
    1349. 

  1349.                     $info_asf['simple_index_object'] = array();
    1350. 

  1350.                     $info_asf_simple_index_object    = &$info_asf['simple_index_object'];
    1351. 

  1351. 

  1352.                     $info_asf_simple_index_object['objectid_guid'] = $next_object_guidtext;
    1353. 

  1353.                     $info_asf_simple_index_object['objectsize']    = $next_object_size;
    1354. 

  1354. 

  1355.                     $simple_index_object_data = $next_object_data_header.fread($getid3->fp, 56 - 24);
    1356. 

  1356. 

  1357.                     $info_asf_simple_index_object['fileid_guid'] = getid3_asf::BytestringToGUID(substr($simple_index_object_data, 24, 16));
    1358. 

  1358. 

  1359.                     getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_simple_index_object, $simple_index_object_data, 40,
    1360. 

  1360.                         array(
    1361. 

  1361.                             'index_entry_time_interval' => 8,
    1362. 

  1362.                             'maximum_packet_count'      => 4,
    1363. 

  1363.                             'index_entries_count'       => 4
    1364. 

  1364.                         )
    1365. 

  1365.                     );
    1366. 

  1366. 

  1367.                     $offset = 56;
    1368. 

  1368. 

  1369.                     $index_entries_data = $simple_index_object_data.fread($getid3->fp, 6 * $info_asf_simple_index_object['index_entries_count']);
    1370. 

  1370.                     for ($index_entries_counter = 0; $index_entries_counter < $info_asf_simple_index_object['index_entries_count']; $index_entries_counter++) {
    1371. 

  1371. 

  1372.                         $info_asf_simple_index_object['index_entries'][$index_entries_counter]['packet_number'] = getid3_lib::LittleEndian2Int(substr($index_entries_data, $offset, 4));
    1373. 

  1373.                         $offset += 4;
    1374. 

  1374. 

  1375.                         $info_asf_simple_index_object['index_entries'][$index_entries_counter]['packet_count']  = getid3_lib::LittleEndian2Int(substr($index_entries_data, $offset, 4));
    1376. 

  1376.                         $offset += 2;
    1377. 

  1377.                     }
    1378. 

  1378.                     break;
    1379. 

  1379. 

  1380. 

  1381.                 case getid3_asf::Index_Object:
    1382. 

  1382. 

  1383.                     // 6.2 ASF top-level Index Object (optional but recommended when appropriate, 0 or 1)
    1384. 

  1384.                     // Field Name                       Field Type   Size (bits)
    1385. 

  1385.                     // Object ID                        GUID         128             // GUID for the Index Object - getid3_asf::Index_Object
    1386. 

  1386.                     // Object Size                      QWORD        64              // Specifies the size, in bytes, of the Index Object, including at least 34 bytes of Index Object header
    1387. 

  1387.                     // Index Entry Time Interval        DWORD        32              // Specifies the time interval between each index entry in ms.
    1388. 

  1388.                     // Index Specifiers Count           WORD         16              // Specifies the number of Index Specifiers structures in this Index Object.
    1389. 

  1389.                     // Index Blocks Count               DWORD        32              // Specifies the number of Index Blocks structures in this Index Object.
    1390. 

  1390. 

  1391.                     // Index Entry Time Interval        DWORD        32              // Specifies the time interval between index entries in milliseconds.  This value cannot be 0.
    1392. 

  1392.                     // Index Specifiers Count           WORD         16              // Specifies the number of entries in the Index Specifiers list.  Valid values are 1 and greater.
    1393. 

  1393.                     // Index Specifiers                 array of:    varies          //
    1394. 

  1394.                     // * Stream Number                  WORD         16              // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127.
    1395. 

  1395.                     // * Index Type                     WORD         16              // Specifies Index Type values as follows:
    1396. 

  1396.                                                                                      //   1 = Nearest Past Data Packet - indexes point to the data packet whose presentation time is closest to the index entry time.
    1397. 

  1397.                                                                                      //   2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire object or first fragment of an object.
    1398. 

  1398.                                                                                      //   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.
    1399. 

  1399.                                                                                      //   Nearest Past Cleanpoint is the most common type of index.
    1400. 

  1400.                     // Index Entry Count                DWORD        32              // Specifies the number of Index Entries in the block.
    1401. 

  1401.                     // * 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.
    1402. 

  1402.                     // * Index Entries                  array of:    varies          //
    1403. 

  1403.                     // * * Offsets                      DWORD        varies          // An offset value of 0xffffffff indicates an invalid offset value
    1404. 

  1404. 

  1405.                     // shortcut
    1406. 

  1406.                     $info_asf['asf_index_object'] = array();
    1407. 

  1407.                     $info_asf_asf_index_object      = &$info_asf['asf_index_object'];
    1408. 

  1408. 

  1409.                     $asf_index_object_data = $next_object_data_header.fread($getid3->fp, 34 - 24);
    1410. 

  1410. 

  1411.                     $info_asf_asf_index_object['objectid_guid'] = $next_object_guidtext;
    1412. 

  1412.                     $info_asf_asf_index_object['objectsize']    = $next_object_size;
    1413. 

  1413. 

  1414.                     getid3_lib::ReadSequence('LittleEndian2Int', $info_asf_asf_index_object, $asf_index_object_data, 24,
    1415. 

  1415.                         array(
    1416. 

  1416.                             'entry_time_interval'    =>4,
    1417. 

  1417.                             'index_specifiers_count' =>2,
    1418. 

  1418.                             'index_blocks_count'     =>4
    1419. 

  1419.                         )
    1420. 

  1420.                     );
    1421. 

  1421. 

  1422.                     $offset = 34;
    1423. 

  1423. 

  1424.                     $asf_index_object_data .= fread($getid3->fp, 4 * $info_asf_asf_index_object['index_specifiers_count']);
    1425. 

  1425. 

  1426.                     for ($index_specifiers_counter = 0; $index_specifiers_counter < $info_asf_asf_index_object['index_specifiers_count']; $index_specifiers_counter++) {
    1427. 

  1427. 

  1428.                         $index_specifier_stream_number = getid3_lib::LittleEndian2Int(substr($asf_index_object_data, $offset, 2));
    1429. 

  1429.                         $offset += 2;
    1430. 

  1430. 

  1431.                         $info_asf_asf_index_object['index_specifiers'][$index_specifiers_counter]['stream_number']   = $index_specifier_stream_number;
    1432. 

  1432. 

  1433.                         $info_asf_asf_index_object['index_specifiers'][$index_specifiers_counter]['index_type']      = getid3_lib::LittleEndian2Int(substr($asf_index_object_data, $offset, 2));
    1434. 

  1434.                         $offset += 2;
    1435. 

  1435. 

  1436.                         $info_asf_asf_index_object['index_specifiers'][$index_specifiers_counter]['index_type_text'] = getid3_asf::ASFIndexObjectIndexTypeLookup($info_asf_asf_index_object['index_specifiers'][$index_specifiers_counter]['index_type']);
    1437. 

  1437.                     }
    1438. 

  1438. 

  1439.                     $asf_index_object_data .= fread($getid3->fp, 4);
    1440. 

  1440.                     $info_asf_asf_index_object['index_entry_count'] = getid3_lib::LittleEndian2Int(substr($asf_index_object_data, $offset, 4));
    1441. 

  1441.                     $offset += 4;
    1442. 

  1442. 

  1443.                     $asf_index_object_data .= fread($getid3->fp, 8 * $info_asf_asf_index_object['index_specifiers_count']);
    1444. 

  1444. 

  1445.                     for ($index_specifiers_counter = 0; $index_specifiers_counter < $info_asf_asf_index_object['index_specifiers_count']; $index_specifiers_counter++) {
    1446. 

  1446.                         $info_asf_asf_index_object['block_positions'][$index_specifiers_counter] = getid3_lib::LittleEndian2Int(substr($asf_index_object_data, $offset, 8));
    1447. 

  1447.                         $offset += 8;
    1448. 

  1448.                     }
    1449. 

  1449. 

  1450.                     $asf_index_object_data .= fread($getid3->fp, 4 * $info_asf_asf_index_object['index_specifiers_count'] * $info_asf_asf_index_object['index_entry_count']);
    1451. 

  1451. 

  1452.                     for ($index_entry_counter = 0; $index_entry_counter < $info_asf_asf_index_object['index_entry_count']; $index_entry_counter++) {
    1453. 

  1453.                         for ($index_specifiers_counter = 0; $index_specifiers_counter < $info_asf_asf_index_object['index_specifiers_count']; $index_specifiers_counter++) {
    1454. 

  1454.                             $info_asf_asf_index_object['offsets'][$index_specifiers_counter][$index_entry_counter] = getid3_lib::LittleEndian2Int(substr($asf_index_object_data, $offset, 4));
    1455. 

  1455.                             $offset += 4;
    1456. 

  1456.                         }
    1457. 

  1457.                     }
    1458. 

  1458.                     break;
    1459. 

  1459. 

  1460. 

  1461.                 default:
    1462. 

  1462. 

  1463.                     // Implementations shall ignore any standard or non-standard object that they do not know how to handle.
    1464. 

  1464.                     if (getid3_asf::GUIDname($next_object_guidtext)) {
    1465. 

  1465.                         $getid3->warning('unhandled GUID "'.getid3_asf::GUIDname($next_object_guidtext).'" {'.$next_object_guidtext.'} in ASF body at offset '.($offset - 16 - 8));
    1466. 

  1466.                     } else {
    1467. 

  1467.                         $getid3->warning('unknown GUID {'.$next_object_guidtext.'} in ASF body at offset '.(ftell($getid3->fp) - 16 - 8));
    1468. 

  1468.                     }
    1469. 

  1469.                     fseek($getid3->fp, ($next_object_size - 16 - 8), SEEK_CUR);
    1470. 

  1470.                     break;
    1471. 

  1471.             }
    1472. 

  1472.         }
    1473. 

  1473. 

  1474.         if (isset($info_asf_codec_list_object['codec_entries']) && is_array($info_asf_codec_list_object['codec_entries'])) {
    1475. 

  1475.             foreach ($info_asf_codec_list_object['codec_entries'] as $stream_number => $stream_data) {
    1476. 

  1476.                 switch ($stream_data['information']) {
    1477. 

  1477.                     case 'WMV1':
    1478. 

  1478.                     case 'WMV2':
    1479. 

  1479.                     case 'WMV3':
    1480. 

  1480.                     case 'MSS1':
    1481. 

  1481.                     case 'MSS2':
    1482. 

  1482.                     case 'WMVA':
    1483. 

  1483.                     case 'WVC1':
    1484. 

  1484.                     case 'WMVP':
    1485. 

  1485.                     case 'WVP2':
    1486. 

  1486.                         $info_video['dataformat'] = 'wmv';
    1487. 

  1487.                         $getid3->info['mime_type']    = 'video/x-ms-wmv';
    1488. 

  1488.                         break;
    1489. 

  1489. 

  1490.                     case 'MP42':
    1491. 

  1491.                     case 'MP43':
    1492. 

  1492.                     case 'MP4S':
    1493. 

  1493.                     case 'mp4s':
    1494. 

  1494.                         $info_video['dataformat'] = 'asf';
    1495. 

  1495.                         $getid3->info['mime_type']    = 'video/x-ms-asf';
    1496. 

  1496.                         break;
    1497. 

  1497. 

  1498.                     default:
    1499. 

  1499.                         switch ($stream_data['type_raw']) {
    1500. 

  1500.                             case 1:
    1501. 

  1501.                                 if (strstr($this->TrimConvert($stream_data['name']), 'Windows Media')) {
    1502. 

  1502.                                     $info_video['dataformat'] = 'wmv';
    1503. 

  1503.                                     if ($getid3->info['mime_type'] == 'video/x-ms-asf') {
    1504. 

  1504.                                         $getid3->info['mime_type'] = 'video/x-ms-wmv';
    1505. 

  1505.                                     }
    1506. 

  1506.                                 }
    1507. 

  1507.                                 break;
    1508. 

  1508. 

  1509.                             case 2:
    1510. 

  1510.                                 if (strstr($this->TrimConvert($stream_data['name']), 'Windows Media')) {
    1511. 

  1511.                                     $info_audio['dataformat'] = 'wma';
    1512. 

  1512.                                     if ($getid3->info['mime_type'] == 'video/x-ms-asf') {
    1513. 

  1513.                                         $getid3->info['mime_type'] = 'audio/x-ms-wma';
    1514. 

  1514.                                     }
    1515. 

  1515.                                 }
    1516. 

  1516.                                 break;
    1517. 

  1517. 

  1518.                         }
    1519. 

  1519.                         break;
    1520. 

  1520.                 }
    1521. 

  1521.             }
    1522. 

  1522.         }
    1523. 

  1523. 

  1524.         switch (@$info_audio['codec']) {
    1525. 

  1525.             case 'MPEG Layer-3':
    1526. 

  1526.                 $info_audio['dataformat'] = 'mp3';
    1527. 

  1527.                 break;
    1528. 

  1528. 

  1529.             default:
    1530. 

  1530.                 break;
    1531. 

  1531.         }
    1532. 

  1532. 

  1533.         if (isset($info_asf_codec_list_object['codec_entries'])) {
    1534. 

  1534.             foreach ($info_asf_codec_list_object['codec_entries'] as $stream_number => $stream_data) {
    1535. 

  1535.                 switch ($stream_data['type_raw']) {
    1536. 

  1536. 

  1537.                     case 1: // video
    1538. 

  1538.                         $info_video['encoder'] = $this->TrimConvert($info_asf_codec_list_object['codec_entries'][$stream_number]['name']);
    1539. 

  1539.                         break;
    1540. 

  1540. 

  1541.                     case 2: // audio
    1542. 

  1542.                         $info_audio['encoder']         = $this->TrimConvert($info_asf_codec_list_object['codec_entries'][$stream_number]['name']);
    1543. 

  1543.                         $info_audio['encoder_options'] = $this->TrimConvert($info_asf_codec_list_object['codec_entries'][0]['description']);
    1544. 

  1544.                         $info_audio['codec']           = $info_audio['encoder'];
    1545. 

  1545.                         break;
    1546. 

  1546. 

  1547.                     default:
    1548. 

  1548.                         $getid3->warning('Unknown streamtype: [codec_list_object][codec_entries]['.$stream_number.'][type_raw] == '.$stream_data['type_raw']);
    1549. 

  1549.                         break;
    1550. 

  1550. 

  1551.                 }
    1552. 

  1552.             }
    1553. 

  1553.         }
    1554. 

  1554. 

  1555.         if (isset($getid3->info['audio'])) {
    1556. 

  1556.             $info_audio['lossless']           = (isset($info_audio['lossless'])           ? $info_audio['lossless']           : false);
    1557. 

  1557.             $info_audio['dataformat']         = (!empty($info_audio['dataformat'])        ? $info_audio['dataformat']         : 'asf');
    1558. 

  1558.         }
    1559. 

  1559. 

  1560.         if (!empty($info_video['dataformat'])) {
    1561. 

  1561.             $info_video['lossless']           = (isset($info_audio['lossless'])           ? $info_audio['lossless']           : false);
    1562. 

  1562.             $info_video['pixel_aspect_ratio'] = (isset($info_audio['pixel_aspect_ratio']) ? $info_audio['pixel_aspect_ratio'] : (float)1);
    1563. 

  1563.             $info_video['dataformat']         = (!empty($info_video['dataformat'])        ? $info_video['dataformat']         : 'asf');
    1564. 

  1564.         }
    1565. 

  1565. 

  1566.         $getid3->info['bitrate'] = @$info_audio['bitrate'] + @$info_video['bitrate'];
    1567. 

  1567. 

  1568.         if (empty($info_audio)) {
    1569. 

  1569.             unset($getid3->info['audio']);
    1570. 

  1570.         }
    1571. 

  1571. 

  1572.         if (empty($info_video)) {
    1573. 

  1573.             unset($getid3->info['video']);
    1574. 

  1574.         }
    1575. 

  1575. 

  1576.         return true;
    1577. 

  1577.     }
    1578. 

  1578. 

  1579. 

  1580. 

  1581.     // Remove terminator 00 00 and convert UNICODE to Latin-1
    1582. 

  1582.     private function TrimConvert($string) {
    1583. 

  1583. 

  1584.         // remove terminator, only if present (it should be, but...)
    1585. 

  1585.         if (substr($string, strlen($string) - 2, 2) == "\x00\x00") {
    1586. 

  1586.             $string = substr($string, 0, strlen($string) - 2);
    1587. 

  1587.         }
    1588. 

  1588. 

  1589.         // convert
    1590. 

  1590.         return trim($this->getid3->iconv('UTF-16LE', 'ISO-8859-1', $string), ' ');
    1591. 

  1591.     }
    1592. 

  1592. 

  1593. 

  1594. 

  1595.     private function WMpictureTypeLookup($wm_picture_type) {
    1596. 

  1596. 

  1597.         static $lookup = array(
    1598. 

  1598.             0x03 => 'Front Cover',
    1599. 

  1599.             0x04 => 'Back Cover',
    1600. 

  1600.             0x00 => 'User Defined',
    1601. 

  1601.             0x05 => 'Leaflet Page',
    1602. 

  1602.             0x06 => 'Media Label',
    1603. 

  1603.             0x07 => 'Lead Artist',
    1604. 

  1604.             0x08 => 'Artist',
    1605. 

  1605.             0x09 => 'Conductor',
    1606. 

  1606.             0x0A => 'Band',
    1607. 

  1607.             0x0B => 'Composer',
    1608. 

  1608.             0x0C => 'Lyricist',
    1609. 

  1609.             0x0D => 'Recording Location',
    1610. 

  1610.             0x0E => 'During Recording',
    1611. 

  1611.             0x0F => 'During Performance',
    1612. 

  1612.             0x10 => 'Video Screen Capture',
    1613. 

  1613.             0x12 => 'Illustration',
    1614. 

  1614.             0x13 => 'Band Logotype',
    1615. 

  1615.             0x14 => 'Publisher Logotype'
    1616. 

  1616.         );
    1617. 

  1617. 

  1618.         return isset($lookup[$wm_picture_type]) ? $this->getid3->iconv('ISO-8859-1', 'UTF-16LE', $lookup[$wm_picture_type]) : '';
    1619. 

  1619.     }
    1620. 

  1620. 

  1621. 

  1622. 

  1623.     public static function ASFCodecListObjectTypeLookup($codec_list_type) {
    1624. 

  1624. 

  1625.         static $lookup = array(
    1626. 

  1626.             0x0001 => 'Video Codec',
    1627. 

  1627.             0x0002 => 'Audio Codec',
    1628. 

  1628.             0xFFFF => 'Unknown Codec'
    1629. 

  1629.         );
    1630. 

  1630. 

  1631.         return (isset($lookup[$codec_list_type]) ? $lookup[$codec_list_type] : 'Invalid Codec Type');
    1632. 

  1632.     }
    1633. 

  1633. 

  1634. 

  1635. 

  1636.     public static function GUIDname($guid_string) {
    1637. 

  1637. 

  1638.         static $lookup = array(
    1639. 

  1639.             getid3_asf::Extended_Stream_Properties_Object   => 'Extended_Stream_Properties_Object',
    1640. 

  1640.             getid3_asf::Padding_Object                      => 'Padding_Object',
    1641. 

  1641.             getid3_asf::Payload_Ext_Syst_Pixel_Aspect_Ratio => 'Payload_Ext_Syst_Pixel_Aspect_Ratio',
    1642. 

  1642.             getid3_asf::Script_Command_Object               => 'Script_Command_Object',
    1643. 

  1643.             getid3_asf::No_Error_Correction                 => 'No_Error_Correction',
    1644. 

  1644.             getid3_asf::Content_Branding_Object             => 'Content_Branding_Object',
    1645. 

  1645.             getid3_asf::Content_Encryption_Object           => 'Content_Encryption_Object',
    1646. 

  1646.             getid3_asf::Digital_Signature_Object            => 'Digital_Signature_Object',
    1647. 

  1647.             getid3_asf::Extended_Content_Encryption_Object  => 'Extended_Content_Encryption_Object',
    1648. 

  1648.             getid3_asf::Simple_Index_Object                 => 'Simple_Index_Object',
    1649. 

  1649.             getid3_asf::Degradable_JPEG_Media               => 'Degradable_JPEG_Media',
    1650. 

  1650.             getid3_asf::Payload_Extension_System_Timecode   => 'Payload_Extension_System_Timecode',
    1651. 

  1651.             getid3_asf::Binary_Media                        => 'Binary_Media',
    1652. 

  1652.             getid3_asf::Timecode_Index_Object               => 'Timecode_Index_Object',
    1653. 

  1653.             getid3_asf::Metadata_Library_Object             => 'Metadata_Library_Object',
    1654. 

  1654.             getid3_asf::Reserved_3                          => 'Reserved_3',
    1655. 

  1655.             getid3_asf::Reserved_4                          => 'Reserved_4',
    1656. 

  1656.             getid3_asf::Command_Media                       => 'Command_Media',
    1657. 

  1657.             getid3_asf::Header_Extension_Object             => 'Header_Extension_Object',
    1658. 

  1658.             getid3_asf::Media_Object_Index_Parameters_Obj   => 'Media_Object_Index_Parameters_Obj',
    1659. 

  1659.             getid3_asf::Header_Object                       => 'Header_Object',
    1660. 

  1660.             getid3_asf::Content_Description_Object          => 'Content_Description_Object',
    1661. 

  1661.             getid3_asf::Error_Correction_Object             => 'Error_Correction_Object',
    1662. 

  1662.             getid3_asf::Data_Object                         => 'Data_Object',
    1663. 

  1663.             getid3_asf::Web_Stream_Media_Subtype            => 'Web_Stream_Media_Subtype',
    1664. 

  1664.             getid3_asf::Stream_Bitrate_Properties_Object    => 'Stream_Bitrate_Properties_Object',
    1665. 

  1665.             getid3_asf::Language_List_Object                => 'Language_List_Object',
    1666. 

  1666.             getid3_asf::Codec_List_Object                   => 'Codec_List_Object',
    1667. 

  1667.             getid3_asf::Reserved_2                          => 'Reserved_2',
    1668. 

  1668.             getid3_asf::File_Properties_Object              => 'File_Properties_Object',
    1669. 

  1669.             getid3_asf::File_Transfer_Media                 => 'File_Transfer_Media',
    1670. 

  1670.             getid3_asf::Old_RTP_Extension_Data              => 'Old_RTP_Extension_Data',
    1671. 

  1671.             getid3_asf::Advanced_Mutual_Exclusion_Object    => 'Advanced_Mutual_Exclusion_Object',
    1672. 

  1672.             getid3_asf::Bandwidth_Sharing_Object            => 'Bandwidth_Sharing_Object',
    1673. 

  1673.             getid3_asf::Reserved_1                          => 'Reserved_1',
    1674. 

  1674.             getid3_asf::Bandwidth_Sharing_Exclusive         => 'Bandwidth_Sharing_Exclusive',
    1675. 

  1675.             getid3_asf::Bandwidth_Sharing_Partial           => 'Bandwidth_Sharing_Partial',
    1676. 

  1676.             getid3_asf::JFIF_Media                          => 'JFIF_Media',
    1677. 

  1677.             getid3_asf::Stream_Properties_Object            => 'Stream_Properties_Object',
    1678. 

  1678.             getid3_asf::Video_Media                         => 'Video_Media',
    1679. 

  1679.             getid3_asf::Audio_Spread                        => 'Audio_Spread',
    1680. 

  1680.             getid3_asf::Metadata_Object                     => 'Metadata_Object',
    1681. 

  1681.             getid3_asf::Payload_Ext_Syst_Sample_Duration    => 'Payload_Ext_Syst_Sample_Duration',
    1682. 

  1682.             getid3_asf::Group_Mutual_Exclusion_Object       => 'Group_Mutual_Exclusion_Object',
    1683. 

  1683.             getid3_asf::Extended_Content_Description_Object => 'Extended_Content_Description_Object',
    1684. 

  1684.             getid3_asf::Stream_Prioritization_Object        => 'Stream_Prioritization_Object',
    1685. 

  1685.             getid3_asf::Payload_Ext_System_Content_Type     => 'Payload_Ext_System_Content_Type',
    1686. 

  1686.             getid3_asf::Old_File_Properties_Object          => 'Old_File_Properties_Object',
    1687. 

  1687.             getid3_asf::Old_ASF_Header_Object               => 'Old_ASF_Header_Object',
    1688. 

  1688.             getid3_asf::Old_ASF_Data_Object                 => 'Old_ASF_Data_Object',
    1689. 

  1689.             getid3_asf::Index_Object                        => 'Index_Object',
    1690. 

  1690.             getid3_asf::Old_Stream_Properties_Object        => 'Old_Stream_Properties_Object',
    1691. 

  1691.             getid3_asf::Old_Content_Description_Object      => 'Old_Content_Description_Object',
    1692. 

  1692.             getid3_asf::Old_Script_Command_Object           => 'Old_Script_Command_Object',
    1693. 

  1693.             getid3_asf::Old_Marker_Object                   => 'Old_Marker_Object',
    1694. 

  1694.             getid3_asf::Old_Component_Download_Object       => 'Old_Component_Download_Object',
    1695. 

  1695.             getid3_asf::Old_Stream_Group_Object             => 'Old_Stream_Group_Object',
    1696. 

  1696.             getid3_asf::Old_Scalable_Object                 => 'Old_Scalable_Object',
    1697. 

  1697.             getid3_asf::Old_Prioritization_Object           => 'Old_Prioritization_Object',
    1698. 

  1698.             getid3_asf::Bitrate_Mutual_Exclusion_Object     => 'Bitrate_Mutual_Exclusion_Object',
    1699. 

  1699.             getid3_asf::Old_Inter_Media_Dependency_Object   => 'Old_Inter_Media_Dependency_Object',
    1700. 

  1700.             getid3_asf::Old_Rating_Object                   => 'Old_Rating_Object',
    1701. 

  1701.             getid3_asf::Index_Parameters_Object             => 'Index_Parameters_Object',
    1702. 

  1702.             getid3_asf::Old_Color_Table_Object              => 'Old_Color_Table_Object',
    1703. 

  1703.             getid3_asf::Old_Language_List_Object            => 'Old_Language_List_Object',
    1704. 

  1704.             getid3_asf::Old_Audio_Media                     => 'Old_Audio_Media',
    1705. 

  1705.             getid3_asf::Old_Video_Media                     => 'Old_Video_Media',
    1706. 

  1706.             getid3_asf::Old_Image_Media                     => 'Old_Image_Media',
    1707. 

  1707.             getid3_asf::Old_Timecode_Media                  => 'Old_Timecode_Media',
    1708. 

  1708.             getid3_asf::Old_Text_Media                      => 'Old_Text_Media',
    1709. 

  1709.             getid3_asf::Old_MIDI_Media                      => 'Old_MIDI_Media',
    1710. 

  1710.             getid3_asf::Old_Command_Media                   => 'Old_Command_Media',
    1711. 

  1711.             getid3_asf::Old_No_Error_Concealment            => 'Old_No_Error_Concealment',
    1712. 

  1712.             getid3_asf::Old_Scrambled_Audio                 => 'Old_Scrambled_Audio',
    1713. 

  1713.             getid3_asf::Old_No_Color_Table                  => 'Old_No_Color_Table',
    1714. 

  1714.             getid3_asf::Old_SMPTE_Time                      => 'Old_SMPTE_Time',
    1715. 

  1715.             getid3_asf::Old_ASCII_Text                      => 'Old_ASCII_Text',
    1716. 

  1716.             getid3_asf::Old_Unicode_Text                    => 'Old_Unicode_Text',
    1717. 

  1717.             getid3_asf::Old_HTML_Text                       => 'Old_HTML_Text',
    1718. 

  1718.             getid3_asf::Old_URL_Command                     => 'Old_URL_Command',
    1719. 

  1719.             getid3_asf::Old_Filename_Command                => 'Old_Filename_Command',
    1720. 

  1720.             getid3_asf::Old_ACM_Codec                       => 'Old_ACM_Codec',
    1721. 

  1721.             getid3_asf::Old_VCM_Codec                       => 'Old_VCM_Codec',
    1722. 

  1722.             getid3_asf::Old_QuickTime_Codec                 => 'Old_QuickTime_Codec',
    1723. 

  1723.             getid3_asf::Old_DirectShow_Transform_Filter     => 'Old_DirectShow_Transform_Filter',
    1724. 

  1724.             getid3_asf::Old_DirectShow_Rendering_Filter     => 'Old_DirectShow_Rendering_Filter',
    1725. 

  1725.             getid3_asf::Old_No_Enhancement                  => 'Old_No_Enhancement',
    1726. 

  1726.             getid3_asf::Old_Unknown_Enhancement_Type        => 'Old_Unknown_Enhancement_Type',
    1727. 

  1727.             getid3_asf::Old_Temporal_Enhancement            => 'Old_Temporal_Enhancement',
    1728. 

  1728.             getid3_asf::Old_Spatial_Enhancement             => 'Old_Spatial_Enhancement',
    1729. 

  1729.             getid3_asf::Old_Quality_Enhancement             => 'Old_Quality_Enhancement',
    1730. 

  1730.             getid3_asf::Old_Number_of_Channels_Enhancement  => 'Old_Number_of_Channels_Enhancement',
    1731. 

  1731.             getid3_asf::Old_Frequency_Response_Enhancement  => 'Old_Frequency_Response_Enhancement',
    1732. 

  1732.             getid3_asf::Old_Media_Object                    => 'Old_Media_Object',
    1733. 

  1733.             getid3_asf::Mutex_Language                      => 'Mutex_Language',
    1734. 

  1734.             getid3_asf::Mutex_Bitrate                       => 'Mutex_Bitrate',
    1735. 

  1735.             getid3_asf::Mutex_Unknown                       => 'Mutex_Unknown',
    1736. 

  1736.             getid3_asf::Old_ASF_Placeholder_Object          => 'Old_ASF_Placeholder_Object',
    1737. 

  1737.             getid3_asf::Old_Data_Unit_Extension_Object      => 'Old_Data_Unit_Extension_Object',
    1738. 

  1738.             getid3_asf::Web_Stream_Format                   => 'Web_Stream_Format',
    1739. 

  1739.             getid3_asf::Payload_Ext_System_File_Name        => 'Payload_Ext_System_File_Name',
    1740. 

  1740.             getid3_asf::Marker_Object                       => 'Marker_Object',
    1741. 

  1741.             getid3_asf::Timecode_Index_Parameters_Object    => 'Timecode_Index_Parameters_Object',
    1742. 

  1742.             getid3_asf::Audio_Media                         => 'Audio_Media',
    1743. 

  1743.             getid3_asf::Media_Object_Index_Object           => 'Media_Object_Index_Object',
    1744. 

  1744.             getid3_asf::Alt_Extended_Content_Encryption_Obj => 'Alt_Extended_Content_Encryption_Obj'
    1745. 

  1745.         );
    1746. 

  1746. 

  1747.         return @$lookup[$guid_string];
    1748. 

  1748.     }
    1749. 

  1749. 

  1750. 

  1751. 

  1752.     public static function ASFIndexObjectIndexTypeLookup($id) {
    1753. 

  1753. 

  1754.         static $lookup = array(
    1755. 

  1755.             1 => 'Nearest Past Data Packet',
    1756. 

  1756.             2 => 'Nearest Past Media Object',
    1757. 

  1757.             3 => 'Nearest Past Cleanpoint'
    1758. 

  1758.         );
    1759. 

  1759. 

  1760.         return (isset($lookup[$id]) ? $lookup[$id] : 'invalid');
    1761. 

  1761.     }
    1762. 

  1762. 

  1763. 

  1764. 

  1765.     public static function GUIDtoBytestring($guid_string) {
    1766. 

  1766. 

  1767.         // Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way:
    1768. 

  1768.         // first 4 bytes are in little-endian order
    1769. 

  1769.         // next 2 bytes are appended in little-endian order
    1770. 

  1770.         // next 2 bytes are appended in little-endian order
    1771. 

  1771.         // next 2 bytes are appended in big-endian order
    1772. 

  1772.         // next 6 bytes are appended in big-endian order
    1773. 

  1773. 

  1774.         // AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string:
    1775. 

  1775.         // $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp
    1776. 

  1776. 

  1777.         $hex_byte_char_string  = chr(hexdec(substr($guid_string,  6, 2)));
    1778. 

  1778.         $hex_byte_char_string .= chr(hexdec(substr($guid_string,  4, 2)));
    1779. 

  1779.         $hex_byte_char_string .= chr(hexdec(substr($guid_string,  2, 2)));
    1780. 

  1780.         $hex_byte_char_string .= chr(hexdec(substr($guid_string,  0, 2)));
    1781. 

  1781. 

  1782.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 11, 2)));
    1783. 

  1783.         $hex_byte_char_string .= chr(hexdec(substr($guid_string,  9, 2)));
    1784. 

  1784. 

  1785.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 16, 2)));
    1786. 

  1786.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 14, 2)));
    1787. 

  1787. 

  1788.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 19, 2)));
    1789. 

  1789.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 21, 2)));
    1790. 

  1790. 

  1791.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 24, 2)));
    1792. 

  1792.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 26, 2)));
    1793. 

  1793.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 28, 2)));
    1794. 

  1794.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 30, 2)));
    1795. 

  1795.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 32, 2)));
    1796. 

  1796.         $hex_byte_char_string .= chr(hexdec(substr($guid_string, 34, 2)));
    1797. 

  1797. 

  1798.         return $hex_byte_char_string;
    1799. 

  1799.     }
    1800. 

  1800. 

  1801. 

  1802. 

  1803.     public static function BytestringToGUID($byte_string) {
    1804. 

  1804. 

  1805.         $guid_string  = str_pad(dechex(ord($byte_string{3})),  2, '0', STR_PAD_LEFT);
    1806. 

  1806.         $guid_string .= str_pad(dechex(ord($byte_string{2})),  2, '0', STR_PAD_LEFT);
    1807. 

  1807.         $guid_string .= str_pad(dechex(ord($byte_string{1})),  2, '0', STR_PAD_LEFT);
    1808. 

  1808.         $guid_string .= str_pad(dechex(ord($byte_string{0})),  2, '0', STR_PAD_LEFT);
    1809. 

  1809.         $guid_string .= '-';
    1810. 

  1810.         $guid_string .= str_pad(dechex(ord($byte_string{5})),  2, '0', STR_PAD_LEFT);
    1811. 

  1811.         $guid_string .= str_pad(dechex(ord($byte_string{4})),  2, '0', STR_PAD_LEFT);
    1812. 

  1812.         $guid_string .= '-';
    1813. 

  1813.         $guid_string .= str_pad(dechex(ord($byte_string{7})),  2, '0', STR_PAD_LEFT);
    1814. 

  1814.         $guid_string .= str_pad(dechex(ord($byte_string{6})),  2, '0', STR_PAD_LEFT);
    1815. 

  1815.         $guid_string .= '-';
    1816. 

  1816.         $guid_string .= str_pad(dechex(ord($byte_string{8})),  2, '0', STR_PAD_LEFT);
    1817. 

  1817.         $guid_string .= str_pad(dechex(ord($byte_string{9})),  2, '0', STR_PAD_LEFT);
    1818. 

  1818.         $guid_string .= '-';
    1819. 

  1819.         $guid_string .= str_pad(dechex(ord($byte_string{10})), 2, '0', STR_PAD_LEFT);
    1820. 

  1820.         $guid_string .= str_pad(dechex(ord($byte_string{11})), 2, '0', STR_PAD_LEFT);
    1821. 

  1821.         $guid_string .= str_pad(dechex(ord($byte_string{12})), 2, '0', STR_PAD_LEFT);
    1822. 

  1822.         $guid_string .= str_pad(dechex(ord($byte_string{13})), 2, '0', STR_PAD_LEFT);
    1823. 

  1823.         $guid_string .= str_pad(dechex(ord($byte_string{14})), 2, '0', STR_PAD_LEFT);
    1824. 

  1824.         $guid_string .= str_pad(dechex(ord($byte_string{15})), 2, '0', STR_PAD_LEFT);
    1825. 

  1825. 

  1826.         return strtoupper($guid_string);
    1827. 

  1827.     }
    1828. 

  1828. 

  1829. 

  1830. 

  1831.     public static function FiletimeToUNIXtime($file_time, $round=true) {
    1832. 

  1832. 

  1833.         // FILETIME is a 64-bit unsigned integer representing
    1834. 

  1834.         // the number of 100-nanosecond intervals since January 1, 1601
    1835. 

  1835.         // UNIX timestamp is number of seconds since January 1, 1970
    1836. 

  1836.         // 116444736000000000 = 10000000 * 60 * 60 * 24 * 365 * 369 + 89 leap days
    1837. 

  1837. 

  1838.         $time = ($file_time - 116444736000000000) / 10000000;
    1839. 

  1839. 

  1840.         if ($round) {
    1841. 

  1841.             return intval(round($time));
    1842. 

  1842.         }
    1843. 

  1843. 

  1844.         return $time;
    1845. 

  1845.     }
    1846. 

  1846. 

  1847. 

  1848. 

  1849.     public static function TrimTerm($string) {
    1850. 

  1850. 

  1851.         // remove terminator, only if present (it should be, but...)
    1852. 

  1852.         if (substr($string, -2) == "\x00\x00") {
    1853. 

  1853.             $string = substr($string, 0, -2);
    1854. 

  1854.         }
    1855. 

  1855.         return $string;
    1856. 

  1856.     }
    1857. 

  1857. 

  1858. 

  1859. }
    1860. 

  1860. 

  1861. 

  1862. ?>
    1863.