<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at https://github.com/JamesHeinrich/getID3 // // or https://www.getid3.org // // or http://getid3.sourceforge.net // // see readme.txt for more details // ///////////////////////////////////////////////////////////////// // // // module.audio-video.asf.php // // module for analyzing ASF, WMA and WMV files // // dependencies: module.audio-video.riff.php // // /// ///////////////////////////////////////////////////////////////// if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers exit; } getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true); class getid3_asf extends getid3_handler { protected static $ASFIndexParametersObjectIndexSpecifiersIndexTypes = array( 1 => 'Nearest Past Data Packet', 2 => 'Nearest Past Media Object', 3 => 'Nearest Past Cleanpoint' ); protected static $ASFMediaObjectIndexParametersObjectIndexSpecifiersIndexTypes = array( 1 => 'Nearest Past Data Packet', 2 => 'Nearest Past Media Object', 3 => 'Nearest Past Cleanpoint', 0xFF => 'Frame Number Offset' ); protected static $ASFTimecodeIndexParametersObjectIndexSpecifiersIndexTypes = array( 2 => 'Nearest Past Media Object', 3 => 'Nearest Past Cleanpoint' ); /** * @param getID3 $getid3 */ public function __construct(getID3 $getid3) { parent::__construct($getid3); // extends getid3_handler::__construct() // initialize all GUID constants $GUIDarray = $this->KnownGUIDs(); foreach ($GUIDarray as $GUIDname => $hexstringvalue) { if (!defined($GUIDname)) { define($GUIDname, $this->GUIDtoBytestring($hexstringvalue)); } } } /** * @return bool */ public function Analyze() { $info = &$this->getid3->info; // Shortcuts $thisfile_audio = &$info['audio']; $thisfile_video = &$info['video']; $info['asf'] = array(); $thisfile_asf = &$info['asf']; $thisfile_asf['comments'] = array(); $thisfile_asf_comments = &$thisfile_asf['comments']; $thisfile_asf['header_object'] = array(); $thisfile_asf_headerobject = &$thisfile_asf['header_object']; // ASF structure: // * Header Object [required] // * File Properties Object [required] (global file attributes) // * Stream Properties Object [required] (defines media stream & characteristics) // * Header Extension Object [required] (additional functionality) // * Content Description Object (bibliographic information) // * Script Command Object (commands for during playback) // * Marker Object (named jumped points within the file) // * Data Object [required] // * Data Packets // * Index Object // Header Object: (mandatory, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for header object - GETID3_ASF_Header_Object // Object Size QWORD 64 // size of header object, including 30 bytes of Header Object header // Number of Header Objects DWORD 32 // number of objects in header object // Reserved1 BYTE 8 // hardcoded: 0x01 // Reserved2 BYTE 8 // hardcoded: 0x02 $info['fileformat'] = 'asf'; $this->fseek($info['avdataoffset']); $HeaderObjectData = $this->fread(30); $thisfile_asf_headerobject['objectid'] = substr($HeaderObjectData, 0, 16); $thisfile_asf_headerobject['objectid_guid'] = $this->BytestringToGUID($thisfile_asf_headerobject['objectid']); if ($thisfile_asf_headerobject['objectid'] != GETID3_ASF_Header_Object) { unset($info['fileformat'], $info['asf']); return $this->error('ASF header GUID {'.$this->BytestringToGUID($thisfile_asf_headerobject['objectid']).'} does not match expected "GETID3_ASF_Header_Object" GUID {'.$this->BytestringToGUID(GETID3_ASF_Header_Object).'}'); } $thisfile_asf_headerobject['objectsize'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 16, 8)); $thisfile_asf_headerobject['headerobjects'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 24, 4)); $thisfile_asf_headerobject['reserved1'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 28, 1)); $thisfile_asf_headerobject['reserved2'] = getid3_lib::LittleEndian2Int(substr($HeaderObjectData, 29, 1)); $NextObjectOffset = $this->ftell(); $ASFHeaderData = $this->fread($thisfile_asf_headerobject['objectsize'] - 30); $offset = 0; $thisfile_asf_streambitratepropertiesobject = array(); $thisfile_asf_codeclistobject = array(); $StreamPropertiesObjectData = array(); for ($HeaderObjectsCounter = 0; $HeaderObjectsCounter < $thisfile_asf_headerobject['headerobjects']; $HeaderObjectsCounter++) { $NextObjectGUID = substr($ASFHeaderData, $offset, 16); $offset += 16; $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID); $NextObjectSize = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; switch ($NextObjectGUID) { case GETID3_ASF_File_Properties_Object: // File Properties Object: (mandatory, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for file properties object - GETID3_ASF_File_Properties_Object // Object Size QWORD 64 // size of file properties object, including 104 bytes of File Properties Object header // File ID GUID 128 // unique ID - identical to File ID in Data Object // File Size QWORD 64 // entire file in bytes. Invalid if Broadcast Flag == 1 // Creation Date QWORD 64 // date & time of file creation. Maybe invalid if Broadcast Flag == 1 // Data Packets Count QWORD 64 // number of data packets in Data Object. Invalid if Broadcast Flag == 1 // Play Duration QWORD 64 // playtime, in 100-nanosecond units. Invalid if Broadcast Flag == 1 // Send Duration QWORD 64 // time needed to send file, in 100-nanosecond units. Players can ignore this value. Invalid if Broadcast Flag == 1 // 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 // Flags DWORD 32 // // * Broadcast Flag bits 1 (0x01) // file is currently being written, some header values are invalid // * Seekable Flag bits 1 (0x02) // is file seekable // * Reserved bits 30 (0xFFFFFFFC) // reserved - set to zero // Minimum Data Packet Size DWORD 32 // in bytes. should be same as Maximum Data Packet Size. Invalid if Broadcast Flag == 1 // Maximum Data Packet Size DWORD 32 // in bytes. should be same as Minimum Data Packet Size. Invalid if Broadcast Flag == 1 // Maximum Bitrate DWORD 32 // maximum instantaneous bitrate in bits per second for entire file, including all data streams and ASF overhead // shortcut $thisfile_asf['file_properties_object'] = array(); $thisfile_asf_filepropertiesobject = &$thisfile_asf['file_properties_object']; $thisfile_asf_filepropertiesobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_filepropertiesobject['objectid'] = $NextObjectGUID; $thisfile_asf_filepropertiesobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_filepropertiesobject['objectsize'] = $NextObjectSize; $thisfile_asf_filepropertiesobject['fileid'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_filepropertiesobject['fileid_guid'] = $this->BytestringToGUID($thisfile_asf_filepropertiesobject['fileid']); $thisfile_asf_filepropertiesobject['filesize'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_filepropertiesobject['creation_date'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $thisfile_asf_filepropertiesobject['creation_date_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_filepropertiesobject['creation_date']); $offset += 8; $thisfile_asf_filepropertiesobject['data_packets'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_filepropertiesobject['play_duration'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_filepropertiesobject['send_duration'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_filepropertiesobject['preroll'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_filepropertiesobject['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_filepropertiesobject['flags']['broadcast'] = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0001); $thisfile_asf_filepropertiesobject['flags']['seekable'] = (bool) ($thisfile_asf_filepropertiesobject['flags_raw'] & 0x0002); $thisfile_asf_filepropertiesobject['min_packet_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_filepropertiesobject['max_packet_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_filepropertiesobject['max_bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; if ($thisfile_asf_filepropertiesobject['flags']['broadcast']) { // broadcast flag is set, some values invalid unset($thisfile_asf_filepropertiesobject['filesize']); unset($thisfile_asf_filepropertiesobject['data_packets']); unset($thisfile_asf_filepropertiesobject['play_duration']); unset($thisfile_asf_filepropertiesobject['send_duration']); unset($thisfile_asf_filepropertiesobject['min_packet_size']); unset($thisfile_asf_filepropertiesobject['max_packet_size']); } else { // broadcast flag NOT set, perform calculations $info['playtime_seconds'] = ($thisfile_asf_filepropertiesobject['play_duration'] / 10000000) - ($thisfile_asf_filepropertiesobject['preroll'] / 1000); //$info['bitrate'] = $thisfile_asf_filepropertiesobject['max_bitrate']; $info['bitrate'] = getid3_lib::SafeDiv($thisfile_asf_filepropertiesobject['filesize'] * 8, $info['playtime_seconds']); } break; case GETID3_ASF_Stream_Properties_Object: // Stream Properties Object: (mandatory, one per media stream) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for stream properties object - GETID3_ASF_Stream_Properties_Object // Object Size QWORD 64 // size of stream properties object, including 78 bytes of Stream Properties Object header // Stream Type GUID 128 // GETID3_ASF_Audio_Media, GETID3_ASF_Video_Media or GETID3_ASF_Command_Media // Error Correction Type GUID 128 // GETID3_ASF_Audio_Spread for audio-only streams, GETID3_ASF_No_Error_Correction for other stream types // Time Offset QWORD 64 // 100-nanosecond units. typically zero. added to all timestamps of samples in the stream // Type-Specific Data Length DWORD 32 // number of bytes for Type-Specific Data field // Error Correction Data Length DWORD 32 // number of bytes for Error Correction Data field // Flags WORD 16 // // * Stream Number bits 7 (0x007F) // number of this stream. 1 <= valid <= 127 // * Reserved bits 8 (0x7F80) // reserved - set to zero // * Encrypted Content Flag bits 1 (0x8000) // stream contents encrypted if set // Reserved DWORD 32 // reserved - set to zero // Type-Specific Data BYTESTREAM variable // type-specific format data, depending on value of Stream Type // Error Correction Data BYTESTREAM variable // error-correction-specific format data, depending on value of Error Correct Type // There is one GETID3_ASF_Stream_Properties_Object for each stream (audio, video) but the // stream number isn't known until halfway through decoding the structure, hence it // it is decoded to a temporary variable and then stuck in the appropriate index later $StreamPropertiesObjectData['offset'] = $NextObjectOffset + $offset; $StreamPropertiesObjectData['objectid'] = $NextObjectGUID; $StreamPropertiesObjectData['objectid_guid'] = $NextObjectGUIDtext; $StreamPropertiesObjectData['objectsize'] = $NextObjectSize; $StreamPropertiesObjectData['stream_type'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $StreamPropertiesObjectData['stream_type_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['stream_type']); $StreamPropertiesObjectData['error_correct_type'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $StreamPropertiesObjectData['error_correct_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['error_correct_type']); $StreamPropertiesObjectData['time_offset'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $StreamPropertiesObjectData['type_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $StreamPropertiesObjectData['error_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $StreamPropertiesObjectData['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $StreamPropertiesObjectStreamNumber = $StreamPropertiesObjectData['flags_raw'] & 0x007F; $StreamPropertiesObjectData['flags']['encrypted'] = (bool) ($StreamPropertiesObjectData['flags_raw'] & 0x8000); $offset += 4; // reserved - DWORD $StreamPropertiesObjectData['type_specific_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['type_data_length']); $offset += $StreamPropertiesObjectData['type_data_length']; $StreamPropertiesObjectData['error_correct_data'] = substr($ASFHeaderData, $offset, $StreamPropertiesObjectData['error_data_length']); $offset += $StreamPropertiesObjectData['error_data_length']; switch ($StreamPropertiesObjectData['stream_type']) { case GETID3_ASF_Audio_Media: $thisfile_audio['dataformat'] = (!empty($thisfile_audio['dataformat']) ? $thisfile_audio['dataformat'] : 'asf'); $thisfile_audio['bitrate_mode'] = (!empty($thisfile_audio['bitrate_mode']) ? $thisfile_audio['bitrate_mode'] : 'cbr'); $audiodata = getid3_riff::parseWAVEFORMATex(substr($StreamPropertiesObjectData['type_specific_data'], 0, 16)); unset($audiodata['raw']); $thisfile_audio = getid3_lib::array_merge_noclobber($audiodata, $thisfile_audio); break; case GETID3_ASF_Video_Media: $thisfile_video['dataformat'] = (!empty($thisfile_video['dataformat']) ? $thisfile_video['dataformat'] : 'asf'); $thisfile_video['bitrate_mode'] = (!empty($thisfile_video['bitrate_mode']) ? $thisfile_video['bitrate_mode'] : 'cbr'); break; case GETID3_ASF_Command_Media: default: // do nothing break; } $thisfile_asf['stream_properties_object'][$StreamPropertiesObjectStreamNumber] = $StreamPropertiesObjectData; unset($StreamPropertiesObjectData); // clear for next stream, if any break; case GETID3_ASF_Header_Extension_Object: // Header Extension Object: (mandatory, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Header Extension object - GETID3_ASF_Header_Extension_Object // Object Size QWORD 64 // size of Header Extension object, including 46 bytes of Header Extension Object header // Reserved Field 1 GUID 128 // hardcoded: GETID3_ASF_Reserved_1 // Reserved Field 2 WORD 16 // hardcoded: 0x00000006 // Header Extension Data Size DWORD 32 // in bytes. valid: 0, or > 24. equals object size minus 46 // Header Extension Data BYTESTREAM variable // array of zero or more extended header objects // shortcut $thisfile_asf['header_extension_object'] = array(); $thisfile_asf_headerextensionobject = &$thisfile_asf['header_extension_object']; $thisfile_asf_headerextensionobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_headerextensionobject['objectid'] = $NextObjectGUID; $thisfile_asf_headerextensionobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_headerextensionobject['objectsize'] = $NextObjectSize; $thisfile_asf_headerextensionobject['reserved_1'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_headerextensionobject['reserved_1_guid'] = $this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']); if ($thisfile_asf_headerextensionobject['reserved_1'] != GETID3_ASF_Reserved_1) { $this->warning('header_extension_object.reserved_1 GUID ('.$this->BytestringToGUID($thisfile_asf_headerextensionobject['reserved_1']).') does not match expected "GETID3_ASF_Reserved_1" GUID ('.$this->BytestringToGUID(GETID3_ASF_Reserved_1).')'); //return false; break; } $thisfile_asf_headerextensionobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; if ($thisfile_asf_headerextensionobject['reserved_2'] != 6) { $this->warning('header_extension_object.reserved_2 ('.$thisfile_asf_headerextensionobject['reserved_2'].') does not match expected value of "6"'); //return false; break; } $thisfile_asf_headerextensionobject['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_headerextensionobject['extension_data'] = substr($ASFHeaderData, $offset, $thisfile_asf_headerextensionobject['extension_data_size']); $unhandled_sections = 0; $thisfile_asf_headerextensionobject['extension_data_parsed'] = $this->HeaderExtensionObjectDataParse($thisfile_asf_headerextensionobject['extension_data'], $unhandled_sections); if ($unhandled_sections === 0) { unset($thisfile_asf_headerextensionobject['extension_data']); } $offset += $thisfile_asf_headerextensionobject['extension_data_size']; break; case GETID3_ASF_Codec_List_Object: // Codec List Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Codec List object - GETID3_ASF_Codec_List_Object // Object Size QWORD 64 // size of Codec List object, including 44 bytes of Codec List Object header // Reserved GUID 128 // hardcoded: 86D15241-311D-11D0-A3A4-00A0C90348F6 // Codec Entries Count DWORD 32 // number of entries in Codec Entries array // Codec Entries array of: variable // // * Type WORD 16 // 0x0001 = Video Codec, 0x0002 = Audio Codec, 0xFFFF = Unknown Codec // * Codec Name Length WORD 16 // number of Unicode characters stored in the Codec Name field // * Codec Name WCHAR variable // array of Unicode characters - name of codec used to create the content // * Codec Description Length WORD 16 // number of Unicode characters stored in the Codec Description field // * Codec Description WCHAR variable // array of Unicode characters - description of format used to create the content // * Codec Information Length WORD 16 // number of Unicode characters stored in the Codec Information field // * Codec Information BYTESTREAM variable // opaque array of information bytes about the codec used to create the content // shortcut $thisfile_asf['codec_list_object'] = array(); /** @var mixed[] $thisfile_asf_codeclistobject */ $thisfile_asf_codeclistobject = &$thisfile_asf['codec_list_object']; $thisfile_asf_codeclistobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_codeclistobject['objectid'] = $NextObjectGUID; $thisfile_asf_codeclistobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_codeclistobject['objectsize'] = $NextObjectSize; $thisfile_asf_codeclistobject['reserved'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_codeclistobject['reserved_guid'] = $this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']); if ($thisfile_asf_codeclistobject['reserved'] != $this->GUIDtoBytestring('86D15241-311D-11D0-A3A4-00A0C90348F6')) { $this->warning('codec_list_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_codeclistobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {86D15241-311D-11D0-A3A4-00A0C90348F6}'); //return false; break; } $thisfile_asf_codeclistobject['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); if ($thisfile_asf_codeclistobject['codec_entries_count'] > 0) { $thisfile_asf_codeclistobject['codec_entries'] = array(); } $offset += 4; for ($CodecEntryCounter = 0; $CodecEntryCounter < $thisfile_asf_codeclistobject['codec_entries_count']; $CodecEntryCounter++) { // shortcut $thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter] = array(); $thisfile_asf_codeclistobject_codecentries_current = &$thisfile_asf_codeclistobject['codec_entries'][$CodecEntryCounter]; $thisfile_asf_codeclistobject_codecentries_current['type_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_codeclistobject_codecentries_current['type'] = self::codecListObjectTypeLookup($thisfile_asf_codeclistobject_codecentries_current['type_raw']); $CodecNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character $offset += 2; $thisfile_asf_codeclistobject_codecentries_current['name'] = substr($ASFHeaderData, $offset, $CodecNameLength); $offset += $CodecNameLength; $CodecDescriptionLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character $offset += 2; $thisfile_asf_codeclistobject_codecentries_current['description'] = substr($ASFHeaderData, $offset, $CodecDescriptionLength); $offset += $CodecDescriptionLength; $CodecInformationLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_codeclistobject_codecentries_current['information'] = substr($ASFHeaderData, $offset, $CodecInformationLength); $offset += $CodecInformationLength; if ($thisfile_asf_codeclistobject_codecentries_current['type_raw'] == 2) { // audio codec if (strpos($thisfile_asf_codeclistobject_codecentries_current['description'], ',') === false) { $this->warning('[asf][codec_list_object][codec_entries]['.$CodecEntryCounter.'][description] expected to contain comma-separated list of parameters: "'.$thisfile_asf_codeclistobject_codecentries_current['description'].'"'); } else { list($AudioCodecBitrate, $AudioCodecFrequency, $AudioCodecChannels) = explode(',', $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description'])); $thisfile_audio['codec'] = $this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['name']); if (!isset($thisfile_audio['bitrate']) && strstr($AudioCodecBitrate, 'kbps')) { $thisfile_audio['bitrate'] = (int) trim(str_replace('kbps', '', $AudioCodecBitrate)) * 1000; } //if (!isset($thisfile_video['bitrate']) && isset($thisfile_audio['bitrate']) && isset($thisfile_asf['file_properties_object']['max_bitrate']) && ($thisfile_asf_codeclistobject['codec_entries_count'] > 1)) { if (empty($thisfile_video['bitrate']) && !empty($thisfile_audio['bitrate']) && !empty($info['bitrate'])) { //$thisfile_video['bitrate'] = $thisfile_asf['file_properties_object']['max_bitrate'] - $thisfile_audio['bitrate']; $thisfile_video['bitrate'] = $info['bitrate'] - $thisfile_audio['bitrate']; } $AudioCodecFrequency = (int) trim(str_replace('kHz', '', $AudioCodecFrequency)); switch ($AudioCodecFrequency) { case 8: case 8000: $thisfile_audio['sample_rate'] = 8000; break; case 11: case 11025: $thisfile_audio['sample_rate'] = 11025; break; case 12: case 12000: $thisfile_audio['sample_rate'] = 12000; break; case 16: case 16000: $thisfile_audio['sample_rate'] = 16000; break; case 22: case 22050: $thisfile_audio['sample_rate'] = 22050; break; case 24: case 24000: $thisfile_audio['sample_rate'] = 24000; break; case 32: case 32000: $thisfile_audio['sample_rate'] = 32000; break; case 44: case 441000: $thisfile_audio['sample_rate'] = 44100; break; case 48: case 48000: $thisfile_audio['sample_rate'] = 48000; break; default: $this->warning('unknown frequency: "'.$AudioCodecFrequency.'" ('.$this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']).')'); break; } if (!isset($thisfile_audio['channels'])) { if (strstr($AudioCodecChannels, 'stereo')) { $thisfile_audio['channels'] = 2; } elseif (strstr($AudioCodecChannels, 'mono')) { $thisfile_audio['channels'] = 1; } } } } } break; case GETID3_ASF_Script_Command_Object: // Script Command Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Script Command object - GETID3_ASF_Script_Command_Object // Object Size QWORD 64 // size of Script Command object, including 44 bytes of Script Command Object header // Reserved GUID 128 // hardcoded: 4B1ACBE3-100B-11D0-A39B-00A0C90348F6 // Commands Count WORD 16 // number of Commands structures in the Script Commands Objects // Command Types Count WORD 16 // number of Command Types structures in the Script Commands Objects // Command Types array of: variable // // * Command Type Name Length WORD 16 // number of Unicode characters for Command Type Name // * Command Type Name WCHAR variable // array of Unicode characters - name of a type of command // Commands array of: variable // // * Presentation Time DWORD 32 // presentation time of that command, in milliseconds // * Type Index WORD 16 // type of this command, as a zero-based index into the array of Command Types of this object // * Command Name Length WORD 16 // number of Unicode characters for Command Name // * Command Name WCHAR variable // array of Unicode characters - name of this command // shortcut $thisfile_asf['script_command_object'] = array(); $thisfile_asf_scriptcommandobject = &$thisfile_asf['script_command_object']; $thisfile_asf_scriptcommandobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_scriptcommandobject['objectid'] = $NextObjectGUID; $thisfile_asf_scriptcommandobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_scriptcommandobject['objectsize'] = $NextObjectSize; $thisfile_asf_scriptcommandobject['reserved'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_scriptcommandobject['reserved_guid'] = $this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']); if ($thisfile_asf_scriptcommandobject['reserved'] != $this->GUIDtoBytestring('4B1ACBE3-100B-11D0-A39B-00A0C90348F6')) { $this->warning('script_command_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_scriptcommandobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4B1ACBE3-100B-11D0-A39B-00A0C90348F6}'); //return false; break; } $thisfile_asf_scriptcommandobject['commands_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_scriptcommandobject['command_types_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; for ($CommandTypesCounter = 0; $CommandTypesCounter < $thisfile_asf_scriptcommandobject['command_types_count']; $CommandTypesCounter++) { $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character $offset += 2; $thisfile_asf_scriptcommandobject['command_types'][$CommandTypesCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength); $offset += $CommandTypeNameLength; } for ($CommandsCounter = 0; $CommandsCounter < $thisfile_asf_scriptcommandobject['commands_count']; $CommandsCounter++) { $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['presentation_time'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['type_index'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $CommandTypeNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character $offset += 2; $thisfile_asf_scriptcommandobject['commands'][$CommandsCounter]['name'] = substr($ASFHeaderData, $offset, $CommandTypeNameLength); $offset += $CommandTypeNameLength; } break; case GETID3_ASF_Marker_Object: // Marker Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Marker object - GETID3_ASF_Marker_Object // Object Size QWORD 64 // size of Marker object, including 48 bytes of Marker Object header // Reserved GUID 128 // hardcoded: 4CFEDB20-75F6-11CF-9C0F-00A0C90349CB // Markers Count DWORD 32 // number of Marker structures in Marker Object // Reserved WORD 16 // hardcoded: 0x0000 // Name Length WORD 16 // number of bytes in the Name field // Name WCHAR variable // name of the Marker Object // Markers array of: variable // // * Offset QWORD 64 // byte offset into Data Object // * Presentation Time QWORD 64 // in 100-nanosecond units // * Entry Length WORD 16 // length in bytes of (Send Time + Flags + Marker Description Length + Marker Description + Padding) // * Send Time DWORD 32 // in milliseconds // * Flags DWORD 32 // hardcoded: 0x00000000 // * Marker Description Length DWORD 32 // number of bytes in Marker Description field // * Marker Description WCHAR variable // array of Unicode characters - description of marker entry // * Padding BYTESTREAM variable // optional padding bytes // shortcut $thisfile_asf['marker_object'] = array(); $thisfile_asf_markerobject = &$thisfile_asf['marker_object']; $thisfile_asf_markerobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_markerobject['objectid'] = $NextObjectGUID; $thisfile_asf_markerobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_markerobject['objectsize'] = $NextObjectSize; $thisfile_asf_markerobject['reserved'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_markerobject['reserved_guid'] = $this->BytestringToGUID($thisfile_asf_markerobject['reserved']); if ($thisfile_asf_markerobject['reserved'] != $this->GUIDtoBytestring('4CFEDB20-75F6-11CF-9C0F-00A0C90349CB')) { $this->warning('marker_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_markerobject['reserved']).'} does not match expected "GETID3_ASF_Reserved_1" GUID {4CFEDB20-75F6-11CF-9C0F-00A0C90349CB}'); break; } $thisfile_asf_markerobject['markers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_markerobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; if ($thisfile_asf_markerobject['reserved_2'] != 0) { $this->warning('marker_object.reserved_2 ('.$thisfile_asf_markerobject['reserved_2'].') does not match expected value of "0"'); break; } $thisfile_asf_markerobject['name_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_markerobject['name'] = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['name_length']); $offset += $thisfile_asf_markerobject['name_length']; for ($MarkersCounter = 0; $MarkersCounter < $thisfile_asf_markerobject['markers_count']; $MarkersCounter++) { $thisfile_asf_markerobject['markers'][$MarkersCounter]['offset'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_markerobject['markers'][$MarkersCounter]['presentation_time'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8)); $offset += 8; $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_markerobject['markers'][$MarkersCounter]['send_time'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_markerobject['markers'][$MarkersCounter]['flags'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description'] = substr($ASFHeaderData, $offset, $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']); $offset += $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']; $PaddingLength = $thisfile_asf_markerobject['markers'][$MarkersCounter]['entry_length'] - 4 - 4 - 4 - $thisfile_asf_markerobject['markers'][$MarkersCounter]['marker_description_length']; if ($PaddingLength > 0) { $thisfile_asf_markerobject['markers'][$MarkersCounter]['padding'] = substr($ASFHeaderData, $offset, $PaddingLength); $offset += $PaddingLength; } } break; case GETID3_ASF_Bitrate_Mutual_Exclusion_Object: // Bitrate Mutual Exclusion Object: (optional) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Bitrate Mutual Exclusion object - GETID3_ASF_Bitrate_Mutual_Exclusion_Object // Object Size QWORD 64 // size of Bitrate Mutual Exclusion object, including 42 bytes of Bitrate Mutual Exclusion Object header // Exlusion Type GUID 128 // nature of mutual exclusion relationship. one of: (GETID3_ASF_Mutex_Bitrate, GETID3_ASF_Mutex_Unknown) // Stream Numbers Count WORD 16 // number of video streams // Stream Numbers WORD variable // array of mutually exclusive video stream numbers. 1 <= valid <= 127 // shortcut $thisfile_asf['bitrate_mutual_exclusion_object'] = array(); $thisfile_asf_bitratemutualexclusionobject = &$thisfile_asf['bitrate_mutual_exclusion_object']; $thisfile_asf_bitratemutualexclusionobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_bitratemutualexclusionobject['objectid'] = $NextObjectGUID; $thisfile_asf_bitratemutualexclusionobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_bitratemutualexclusionobject['objectsize'] = $NextObjectSize; $thisfile_asf_bitratemutualexclusionobject['reserved'] = substr($ASFHeaderData, $offset, 16); $thisfile_asf_bitratemutualexclusionobject['reserved_guid'] = $this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']); $offset += 16; if (($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Bitrate) && ($thisfile_asf_bitratemutualexclusionobject['reserved'] != GETID3_ASF_Mutex_Unknown)) { $this->warning('bitrate_mutual_exclusion_object.reserved GUID {'.$this->BytestringToGUID($thisfile_asf_bitratemutualexclusionobject['reserved']).'} does not match expected "GETID3_ASF_Mutex_Bitrate" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Bitrate).'} or "GETID3_ASF_Mutex_Unknown" GUID {'.$this->BytestringToGUID(GETID3_ASF_Mutex_Unknown).'}'); //return false; break; } $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; for ($StreamNumberCounter = 0; $StreamNumberCounter < $thisfile_asf_bitratemutualexclusionobject['stream_numbers_count']; $StreamNumberCounter++) { $thisfile_asf_bitratemutualexclusionobject['stream_numbers'][$StreamNumberCounter] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; } break; case GETID3_ASF_Error_Correction_Object: // Error Correction Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Error Correction object - GETID3_ASF_Error_Correction_Object // Object Size QWORD 64 // size of Error Correction object, including 44 bytes of Error Correction Object header // Error Correction Type GUID 128 // type of error correction. one of: (GETID3_ASF_No_Error_Correction, GETID3_ASF_Audio_Spread) // Error Correction Data Length DWORD 32 // number of bytes in Error Correction Data field // Error Correction Data BYTESTREAM variable // structure depends on value of Error Correction Type field // shortcut $thisfile_asf['error_correction_object'] = array(); $thisfile_asf_errorcorrectionobject = &$thisfile_asf['error_correction_object']; $thisfile_asf_errorcorrectionobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_errorcorrectionobject['objectid'] = $NextObjectGUID; $thisfile_asf_errorcorrectionobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_errorcorrectionobject['objectsize'] = $NextObjectSize; $thisfile_asf_errorcorrectionobject['error_correction_type'] = substr($ASFHeaderData, $offset, 16); $offset += 16; $thisfile_asf_errorcorrectionobject['error_correction_guid'] = $this->BytestringToGUID($thisfile_asf_errorcorrectionobject['error_correction_type']); $thisfile_asf_errorcorrectionobject['error_correction_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; switch ($thisfile_asf_errorcorrectionobject['error_correction_type']) { case GETID3_ASF_No_Error_Correction: // should be no data, but just in case there is, skip to the end of the field $offset += $thisfile_asf_errorcorrectionobject['error_correction_data_length']; break; case GETID3_ASF_Audio_Spread: // Field Name Field Type Size (bits) // Span BYTE 8 // number of packets over which audio will be spread. // Virtual Packet Length WORD 16 // size of largest audio payload found in audio stream // Virtual Chunk Length WORD 16 // size of largest audio payload found in audio stream // Silence Data Length WORD 16 // number of bytes in Silence Data field // Silence Data BYTESTREAM variable // hardcoded: 0x00 * (Silence Data Length) bytes $thisfile_asf_errorcorrectionobject['span'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 1)); $offset += 1; $thisfile_asf_errorcorrectionobject['virtual_packet_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_errorcorrectionobject['virtual_chunk_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_errorcorrectionobject['silence_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_errorcorrectionobject['silence_data'] = substr($ASFHeaderData, $offset, $thisfile_asf_errorcorrectionobject['silence_data_length']); $offset += $thisfile_asf_errorcorrectionobject['silence_data_length']; break; default: $this->warning('error_correction_object.error_correction_type GUID {'.$this->BytestringToGUID($thisfile_asf_errorcorrectionobject['error_correction_type']).'} does not match expected "GETID3_ASF_No_Error_Correction" GUID {'.$this->BytestringToGUID(GETID3_ASF_No_Error_Correction).'} or "GETID3_ASF_Audio_Spread" GUID {'.$this->BytestringToGUID(GETID3_ASF_Audio_Spread).'}'); //return false; break; } break; case GETID3_ASF_Content_Description_Object: // Content Description Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Content Description object - GETID3_ASF_Content_Description_Object // Object Size QWORD 64 // size of Content Description object, including 34 bytes of Content Description Object header // Title Length WORD 16 // number of bytes in Title field // Author Length WORD 16 // number of bytes in Author field // Copyright Length WORD 16 // number of bytes in Copyright field // Description Length WORD 16 // number of bytes in Description field // Rating Length WORD 16 // number of bytes in Rating field // Title WCHAR 16 // array of Unicode characters - Title // Author WCHAR 16 // array of Unicode characters - Author // Copyright WCHAR 16 // array of Unicode characters - Copyright // Description WCHAR 16 // array of Unicode characters - Description // Rating WCHAR 16 // array of Unicode characters - Rating // shortcut $thisfile_asf['content_description_object'] = array(); $thisfile_asf_contentdescriptionobject = &$thisfile_asf['content_description_object']; $thisfile_asf_contentdescriptionobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_contentdescriptionobject['objectid'] = $NextObjectGUID; $thisfile_asf_contentdescriptionobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_contentdescriptionobject['objectsize'] = $NextObjectSize; $thisfile_asf_contentdescriptionobject['title_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_contentdescriptionobject['author_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_contentdescriptionobject['copyright_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_contentdescriptionobject['description_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_contentdescriptionobject['rating_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_contentdescriptionobject['title'] = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['title_length']); $offset += $thisfile_asf_contentdescriptionobject['title_length']; $thisfile_asf_contentdescriptionobject['author'] = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['author_length']); $offset += $thisfile_asf_contentdescriptionobject['author_length']; $thisfile_asf_contentdescriptionobject['copyright'] = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['copyright_length']); $offset += $thisfile_asf_contentdescriptionobject['copyright_length']; $thisfile_asf_contentdescriptionobject['description'] = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['description_length']); $offset += $thisfile_asf_contentdescriptionobject['description_length']; $thisfile_asf_contentdescriptionobject['rating'] = substr($ASFHeaderData, $offset, $thisfile_asf_contentdescriptionobject['rating_length']); $offset += $thisfile_asf_contentdescriptionobject['rating_length']; $ASFcommentKeysToCopy = array('title'=>'title', 'author'=>'artist', 'copyright'=>'copyright', 'description'=>'comment', 'rating'=>'rating'); foreach ($ASFcommentKeysToCopy as $keytocopyfrom => $keytocopyto) { if (!empty($thisfile_asf_contentdescriptionobject[$keytocopyfrom])) { $thisfile_asf_comments[$keytocopyto][] = $this->TrimTerm($thisfile_asf_contentdescriptionobject[$keytocopyfrom]); } } break; case GETID3_ASF_Extended_Content_Description_Object: // Extended Content Description Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Extended Content Description object - GETID3_ASF_Extended_Content_Description_Object // Object Size QWORD 64 // size of ExtendedContent Description object, including 26 bytes of Extended Content Description Object header // Content Descriptors Count WORD 16 // number of entries in Content Descriptors list // Content Descriptors array of: variable // // * Descriptor Name Length WORD 16 // size in bytes of Descriptor Name field // * Descriptor Name WCHAR variable // array of Unicode characters - Descriptor Name // * Descriptor Value Data Type WORD 16 // Lookup array: // 0x0000 = Unicode String (variable length) // 0x0001 = BYTE array (variable length) // 0x0002 = BOOL (DWORD, 32 bits) // 0x0003 = DWORD (DWORD, 32 bits) // 0x0004 = QWORD (QWORD, 64 bits) // 0x0005 = WORD (WORD, 16 bits) // * Descriptor Value Length WORD 16 // number of bytes stored in Descriptor Value field // * Descriptor Value variable variable // value for Content Descriptor // shortcut $thisfile_asf['extended_content_description_object'] = array(); $thisfile_asf_extendedcontentdescriptionobject = &$thisfile_asf['extended_content_description_object']; $thisfile_asf_extendedcontentdescriptionobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_extendedcontentdescriptionobject['objectid'] = $NextObjectGUID; $thisfile_asf_extendedcontentdescriptionobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_extendedcontentdescriptionobject['objectsize'] = $NextObjectSize; $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; for ($ExtendedContentDescriptorsCounter = 0; $ExtendedContentDescriptorsCounter < $thisfile_asf_extendedcontentdescriptionobject['content_descriptors_count']; $ExtendedContentDescriptorsCounter++) { // shortcut $thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter] = array(); $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current = &$thisfile_asf_extendedcontentdescriptionobject['content_descriptors'][$ExtendedContentDescriptorsCounter]; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['base_offset'] = $offset + 30; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'] = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']); $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name_length']; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = substr($ASFHeaderData, $offset, $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length']); $offset += $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length']; switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) { case 0x0000: // Unicode string break; case 0x0001: // BYTE array // do nothing break; case 0x0002: // BOOL $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = (bool) getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); break; case 0x0003: // DWORD case 0x0004: // QWORD case 0x0005: // WORD $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = getid3_lib::LittleEndian2Int($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); break; default: $this->warning('extended_content_description.content_descriptors.'.$ExtendedContentDescriptorsCounter.'.value_type is invalid ('.$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type'].')'); //return false; break; } switch ($this->TrimConvert(strtolower($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']))) { case 'wm/albumartist': case 'artist': // Note: not 'artist', that comes from 'author' tag $thisfile_asf_comments['albumartist'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'wm/albumtitle': case 'album': $thisfile_asf_comments['album'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'wm/genre': case 'genre': $thisfile_asf_comments['genre'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'wm/partofset': $thisfile_asf_comments['partofset'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'wm/tracknumber': case 'tracknumber': // be careful casting to int: casting unicode strings to int gives unexpected results (stops parsing at first non-numeric character) $thisfile_asf_comments['track_number'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); foreach ($thisfile_asf_comments['track_number'] as $key => $value) { if (preg_match('/^[0-9\x00]+$/', $value)) { $thisfile_asf_comments['track_number'][$key] = intval(str_replace("\x00", '', $value)); } } break; case 'wm/track': if (empty($thisfile_asf_comments['track_number'])) { $thisfile_asf_comments['track_number'] = array(1 + (int) $this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); } break; case 'wm/year': case 'year': case 'date': $thisfile_asf_comments['year'] = array( $this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'wm/lyrics': case 'lyrics': $thisfile_asf_comments['lyrics'] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); break; case 'isvbr': if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']) { $thisfile_audio['bitrate_mode'] = 'vbr'; $thisfile_video['bitrate_mode'] = 'vbr'; } break; case 'id3': $this->getid3->include_module('tag.id3v2'); $getid3_id3v2 = new getid3_id3v2($this->getid3); $getid3_id3v2->AnalyzeString($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); unset($getid3_id3v2); if ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_length'] > 1024) { $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'] = '<value too large to display>'; } break; case 'wm/encodingtime': $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix'] = $this->FILETIMEtoUNIXtime($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); $thisfile_asf_comments['encoding_time_unix'] = array($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['encoding_time_unix']); break; case 'wm/picture': $WMpicture = $this->ASF_WMpicture($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); foreach ($WMpicture as $key => $value) { $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current[$key] = $value; } unset($WMpicture); /* $wm_picture_offset = 0; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 1)); $wm_picture_offset += 1; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type'] = self::WMpictureTypeLookup($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_type_id']); $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_size'] = getid3_lib::LittleEndian2Int(substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 4)); $wm_picture_offset += 4; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = ''; do { $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2); $wm_picture_offset += 2; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] .= $next_byte_pair; } while ($next_byte_pair !== "\x00\x00"); $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] = ''; do { $next_byte_pair = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset, 2); $wm_picture_offset += 2; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_description'] .= $next_byte_pair; } while ($next_byte_pair !== "\x00\x00"); $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['dataoffset'] = $wm_picture_offset; $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'] = substr($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'], $wm_picture_offset); unset($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value']); $imageinfo = array(); $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = ''; $imagechunkcheck = getid3_lib::GetDataImageSize($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], $imageinfo); unset($imageinfo); if (!empty($imagechunkcheck)) { $thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]); } if (!isset($thisfile_asf_comments['picture'])) { $thisfile_asf_comments['picture'] = array(); } $thisfile_asf_comments['picture'][] = array('data'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['data'], 'image_mime'=>$thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['image_mime']); */ break; default: switch ($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value_type']) { case 0: // Unicode string if (substr($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name']), 0, 3) == 'WM/') { $thisfile_asf_comments[str_replace('wm/', '', strtolower($this->TrimConvert($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['name'])))] = array($this->TrimTerm($thisfile_asf_extendedcontentdescriptionobject_contentdescriptor_current['value'])); } break; case 1: break; } break; } } break; case GETID3_ASF_Stream_Bitrate_Properties_Object: // Stream Bitrate Properties Object: (optional, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Stream Bitrate Properties object - GETID3_ASF_Stream_Bitrate_Properties_Object // Object Size QWORD 64 // size of Extended Content Description object, including 26 bytes of Stream Bitrate Properties Object header // Bitrate Records Count WORD 16 // number of records in Bitrate Records // Bitrate Records array of: variable // // * Flags WORD 16 // // * * Stream Number bits 7 (0x007F) // number of this stream // * * Reserved bits 9 (0xFF80) // hardcoded: 0 // * Average Bitrate DWORD 32 // in bits per second // shortcut $thisfile_asf['stream_bitrate_properties_object'] = array(); $thisfile_asf_streambitratepropertiesobject = &$thisfile_asf['stream_bitrate_properties_object']; $thisfile_asf_streambitratepropertiesobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_streambitratepropertiesobject['objectid'] = $NextObjectGUID; $thisfile_asf_streambitratepropertiesobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_streambitratepropertiesobject['objectsize'] = $NextObjectSize; $thisfile_asf_streambitratepropertiesobject['bitrate_records_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) { $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)); $offset += 2; $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags']['stream_number'] = $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['flags_raw'] & 0x007F; $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4)); $offset += 4; } break; case GETID3_ASF_Padding_Object: // Padding Object: (optional) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Padding object - GETID3_ASF_Padding_Object // Object Size QWORD 64 // size of Padding object, including 24 bytes of ASF Padding Object header // Padding Data BYTESTREAM variable // ignore // shortcut $thisfile_asf['padding_object'] = array(); $thisfile_asf_paddingobject = &$thisfile_asf['padding_object']; $thisfile_asf_paddingobject['offset'] = $NextObjectOffset + $offset; $thisfile_asf_paddingobject['objectid'] = $NextObjectGUID; $thisfile_asf_paddingobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_paddingobject['objectsize'] = $NextObjectSize; $thisfile_asf_paddingobject['padding_length'] = $thisfile_asf_paddingobject['objectsize'] - 16 - 8; $thisfile_asf_paddingobject['padding'] = substr($ASFHeaderData, $offset, $thisfile_asf_paddingobject['padding_length']); $offset += ($NextObjectSize - 16 - 8); break; case GETID3_ASF_Extended_Content_Encryption_Object: case GETID3_ASF_Content_Encryption_Object: // WMA DRM - just ignore $offset += ($NextObjectSize - 16 - 8); break; default: // Implementations shall ignore any standard or non-standard object that they do not know how to handle. if ($this->GUIDname($NextObjectGUIDtext)) { $this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8)); } else { $this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF header at offset '.($offset - 16 - 8)); } $offset += ($NextObjectSize - 16 - 8); break; } } if (isset($thisfile_asf_streambitratepropertiesobject['bitrate_records_count'])) { $ASFbitrateAudio = 0; $ASFbitrateVideo = 0; for ($BitrateRecordsCounter = 0; $BitrateRecordsCounter < $thisfile_asf_streambitratepropertiesobject['bitrate_records_count']; $BitrateRecordsCounter++) { if (isset($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter])) { switch ($thisfile_asf_codeclistobject['codec_entries'][$BitrateRecordsCounter]['type_raw']) { case 1: $ASFbitrateVideo += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate']; break; case 2: $ASFbitrateAudio += $thisfile_asf_streambitratepropertiesobject['bitrate_records'][$BitrateRecordsCounter]['bitrate']; break; default: // do nothing break; } } } if ($ASFbitrateAudio > 0) { $thisfile_audio['bitrate'] = $ASFbitrateAudio; } if ($ASFbitrateVideo > 0) { $thisfile_video['bitrate'] = $ASFbitrateVideo; } } if (isset($thisfile_asf['stream_properties_object']) && is_array($thisfile_asf['stream_properties_object'])) { $thisfile_audio['bitrate'] = 0; $thisfile_video['bitrate'] = 0; foreach ($thisfile_asf['stream_properties_object'] as $streamnumber => $streamdata) { switch ($streamdata['stream_type']) { case GETID3_ASF_Audio_Media: // Field Name Field Type Size (bits) // Codec ID / Format Tag WORD 16 // unique ID of audio codec - defined as wFormatTag field of WAVEFORMATEX structure // Number of Channels WORD 16 // number of channels of audio - defined as nChannels field of WAVEFORMATEX structure // Samples Per Second DWORD 32 // in Hertz - defined as nSamplesPerSec field of WAVEFORMATEX structure // Average number of Bytes/sec DWORD 32 // bytes/sec of audio stream - defined as nAvgBytesPerSec field of WAVEFORMATEX structure // Block Alignment WORD 16 // block size in bytes of audio codec - defined as nBlockAlign field of WAVEFORMATEX structure // 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 // Codec Specific Data Size WORD 16 // size in bytes of Codec Specific Data buffer - defined as cbSize field of WAVEFORMATEX structure // Codec Specific Data BYTESTREAM variable // array of codec-specific data bytes // shortcut $thisfile_asf['audio_media'][$streamnumber] = array(); $thisfile_asf_audiomedia_currentstream = &$thisfile_asf['audio_media'][$streamnumber]; $audiomediaoffset = 0; $thisfile_asf_audiomedia_currentstream = getid3_riff::parseWAVEFORMATex(substr($streamdata['type_specific_data'], $audiomediaoffset, 16)); $audiomediaoffset += 16; $thisfile_audio['lossless'] = false; switch ($thisfile_asf_audiomedia_currentstream['raw']['wFormatTag']) { case 0x0001: // PCM case 0x0163: // WMA9 Lossless $thisfile_audio['lossless'] = true; break; } if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) { // @phpstan-ignore-line foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) { if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) { $thisfile_asf_audiomedia_currentstream['bitrate'] = $dataarray['bitrate']; $thisfile_audio['bitrate'] += $dataarray['bitrate']; break; } } } else { if (!empty($thisfile_asf_audiomedia_currentstream['bytes_sec'])) { $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bytes_sec'] * 8; } elseif (!empty($thisfile_asf_audiomedia_currentstream['bitrate'])) { $thisfile_audio['bitrate'] += $thisfile_asf_audiomedia_currentstream['bitrate']; } } $thisfile_audio['streams'][$streamnumber] = $thisfile_asf_audiomedia_currentstream; $thisfile_audio['streams'][$streamnumber]['wformattag'] = $thisfile_asf_audiomedia_currentstream['raw']['wFormatTag']; $thisfile_audio['streams'][$streamnumber]['lossless'] = $thisfile_audio['lossless']; $thisfile_audio['streams'][$streamnumber]['bitrate'] = $thisfile_audio['bitrate']; $thisfile_audio['streams'][$streamnumber]['dataformat'] = 'wma'; unset($thisfile_audio['streams'][$streamnumber]['raw']); $thisfile_asf_audiomedia_currentstream['codec_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $audiomediaoffset, 2)); $audiomediaoffset += 2; $thisfile_asf_audiomedia_currentstream['codec_data'] = substr($streamdata['type_specific_data'], $audiomediaoffset, $thisfile_asf_audiomedia_currentstream['codec_data_size']); $audiomediaoffset += $thisfile_asf_audiomedia_currentstream['codec_data_size']; break; case GETID3_ASF_Video_Media: // Field Name Field Type Size (bits) // Encoded Image Width DWORD 32 // width of image in pixels // Encoded Image Height DWORD 32 // height of image in pixels // Reserved Flags BYTE 8 // hardcoded: 0x02 // Format Data Size WORD 16 // size of Format Data field in bytes // Format Data array of: variable // // * Format Data Size DWORD 32 // number of bytes in Format Data field, in bytes - defined as biSize field of BITMAPINFOHEADER structure // * Image Width LONG 32 // width of encoded image in pixels - defined as biWidth field of BITMAPINFOHEADER structure // * Image Height LONG 32 // height of encoded image in pixels - defined as biHeight field of BITMAPINFOHEADER structure // * Reserved WORD 16 // hardcoded: 0x0001 - defined as biPlanes field of BITMAPINFOHEADER structure // * Bits Per Pixel Count WORD 16 // bits per pixel - defined as biBitCount field of BITMAPINFOHEADER structure // * Compression ID FOURCC 32 // fourcc of video codec - defined as biCompression field of BITMAPINFOHEADER structure // * Image Size DWORD 32 // image size in bytes - defined as biSizeImage field of BITMAPINFOHEADER structure // * Horizontal Pixels / Meter DWORD 32 // horizontal resolution of target device in pixels per meter - defined as biXPelsPerMeter field of BITMAPINFOHEADER structure // * Vertical Pixels / Meter DWORD 32 // vertical resolution of target device in pixels per meter - defined as biYPelsPerMeter field of BITMAPINFOHEADER structure // * Colors Used Count DWORD 32 // number of color indexes in the color table that are actually used - defined as biClrUsed field of BITMAPINFOHEADER structure // * 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 // * Codec Specific Data BYTESTREAM variable // array of codec-specific data bytes // shortcut $thisfile_asf['video_media'][$streamnumber] = array(); $thisfile_asf_videomedia_currentstream = &$thisfile_asf['video_media'][$streamnumber]; $videomediaoffset = 0; $thisfile_asf_videomedia_currentstream['image_width'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['image_height'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['flags'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 1)); $videomediaoffset += 1; $thisfile_asf_videomedia_currentstream['format_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2)); $videomediaoffset += 2; $thisfile_asf_videomedia_currentstream['format_data']['format_data_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['image_width'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['image_height'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['reserved'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2)); $videomediaoffset += 2; $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 2)); $videomediaoffset += 2; $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc'] = substr($streamdata['type_specific_data'], $videomediaoffset, 4); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['image_size'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['horizontal_pels'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['vertical_pels'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['colors_used'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['colors_important'] = getid3_lib::LittleEndian2Int(substr($streamdata['type_specific_data'], $videomediaoffset, 4)); $videomediaoffset += 4; $thisfile_asf_videomedia_currentstream['format_data']['codec_data'] = substr($streamdata['type_specific_data'], $videomediaoffset); if (!empty($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'])) { // @phpstan-ignore-line foreach ($thisfile_asf['stream_bitrate_properties_object']['bitrate_records'] as $dummy => $dataarray) { if (isset($dataarray['flags']['stream_number']) && ($dataarray['flags']['stream_number'] == $streamnumber)) { $thisfile_asf_videomedia_currentstream['bitrate'] = $dataarray['bitrate']; $thisfile_video['streams'][$streamnumber]['bitrate'] = $dataarray['bitrate']; $thisfile_video['bitrate'] += $dataarray['bitrate']; break; } } } $thisfile_asf_videomedia_currentstream['format_data']['codec'] = getid3_riff::fourccLookup($thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']); $thisfile_video['streams'][$streamnumber]['fourcc'] = $thisfile_asf_videomedia_currentstream['format_data']['codec_fourcc']; $thisfile_video['streams'][$streamnumber]['codec'] = $thisfile_asf_videomedia_currentstream['format_data']['codec']; $thisfile_video['streams'][$streamnumber]['resolution_x'] = $thisfile_asf_videomedia_currentstream['image_width']; $thisfile_video['streams'][$streamnumber]['resolution_y'] = $thisfile_asf_videomedia_currentstream['image_height']; $thisfile_video['streams'][$streamnumber]['bits_per_sample'] = $thisfile_asf_videomedia_currentstream['format_data']['bits_per_pixel']; break; default: break; } } } while ($this->ftell() < $info['avdataend']) { $NextObjectDataHeader = $this->fread(24); $offset = 0; $NextObjectGUID = substr($NextObjectDataHeader, 0, 16); $offset += 16; $NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID); $NextObjectSize = getid3_lib::LittleEndian2Int(substr($NextObjectDataHeader, $offset, 8)); $offset += 8; switch ($NextObjectGUID) { case GETID3_ASF_Data_Object: // Data Object: (mandatory, one only) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Data object - GETID3_ASF_Data_Object // Object Size QWORD 64 // size of Data object, including 50 bytes of Data Object header. may be 0 if FilePropertiesObject.BroadcastFlag == 1 // File ID GUID 128 // unique identifier. identical to File ID field in Header Object // Total Data Packets QWORD 64 // number of Data Packet entries in Data Object. invalid if FilePropertiesObject.BroadcastFlag == 1 // Reserved WORD 16 // hardcoded: 0x0101 // shortcut $thisfile_asf['data_object'] = array(); $thisfile_asf_dataobject = &$thisfile_asf['data_object']; $DataObjectData = $NextObjectDataHeader.$this->fread(50 - 24); $offset = 24; $thisfile_asf_dataobject['objectid'] = $NextObjectGUID; $thisfile_asf_dataobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_dataobject['objectsize'] = $NextObjectSize; $thisfile_asf_dataobject['fileid'] = substr($DataObjectData, $offset, 16); $offset += 16; $thisfile_asf_dataobject['fileid_guid'] = $this->BytestringToGUID($thisfile_asf_dataobject['fileid']); $thisfile_asf_dataobject['total_data_packets'] = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 8)); $offset += 8; $thisfile_asf_dataobject['reserved'] = getid3_lib::LittleEndian2Int(substr($DataObjectData, $offset, 2)); $offset += 2; if ($thisfile_asf_dataobject['reserved'] != 0x0101) { $this->warning('data_object.reserved (0x'.sprintf('%04X', $thisfile_asf_dataobject['reserved']).') does not match expected value of "0x0101"'); //return false; break; } // Data Packets array of: variable // // * Error Correction Flags BYTE 8 // // * * Error Correction Data Length bits 4 // if Error Correction Length Type == 00, size of Error Correction Data in bytes, else hardcoded: 0000 // * * Opaque Data Present bits 1 // // * * Error Correction Length Type bits 2 // number of bits for size of the error correction data. hardcoded: 00 // * * Error Correction Present bits 1 // If set, use Opaque Data Packet structure, else use Payload structure // * Error Correction Data $info['avdataoffset'] = $this->ftell(); $this->fseek(($thisfile_asf_dataobject['objectsize'] - 50), SEEK_CUR); // skip actual audio/video data $info['avdataend'] = $this->ftell(); break; case GETID3_ASF_Simple_Index_Object: // Simple Index Object: (optional, recommended, one per video stream) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for Simple Index object - GETID3_ASF_Data_Object // Object Size QWORD 64 // size of Simple Index object, including 56 bytes of Simple Index Object header // File ID GUID 128 // unique identifier. may be zero or identical to File ID field in Data Object and Header Object // Index Entry Time Interval QWORD 64 // interval between index entries in 100-nanosecond units // Maximum Packet Count DWORD 32 // maximum packet count for all index entries // Index Entries Count DWORD 32 // number of Index Entries structures // Index Entries array of: variable // // * Packet Number DWORD 32 // number of the Data Packet associated with this index entry // * Packet Count WORD 16 // number of Data Packets to sent at this index entry // shortcut $thisfile_asf['simple_index_object'] = array(); $thisfile_asf_simpleindexobject = &$thisfile_asf['simple_index_object']; $SimpleIndexObjectData = $NextObjectDataHeader.$this->fread(56 - 24); $offset = 24; $thisfile_asf_simpleindexobject['objectid'] = $NextObjectGUID; $thisfile_asf_simpleindexobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_simpleindexobject['objectsize'] = $NextObjectSize; $thisfile_asf_simpleindexobject['fileid'] = substr($SimpleIndexObjectData, $offset, 16); $offset += 16; $thisfile_asf_simpleindexobject['fileid_guid'] = $this->BytestringToGUID($thisfile_asf_simpleindexobject['fileid']); $thisfile_asf_simpleindexobject['index_entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 8)); $offset += 8; $thisfile_asf_simpleindexobject['maximum_packet_count'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4)); $offset += 4; $thisfile_asf_simpleindexobject['index_entries_count'] = getid3_lib::LittleEndian2Int(substr($SimpleIndexObjectData, $offset, 4)); $offset += 4; $IndexEntriesData = $SimpleIndexObjectData.$this->fread(6 * $thisfile_asf_simpleindexobject['index_entries_count']); for ($IndexEntriesCounter = 0; $IndexEntriesCounter < $thisfile_asf_simpleindexobject['index_entries_count']; $IndexEntriesCounter++) { $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_number'] = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4)); $offset += 4; $thisfile_asf_simpleindexobject['index_entries'][$IndexEntriesCounter]['packet_count'] = getid3_lib::LittleEndian2Int(substr($IndexEntriesData, $offset, 4)); $offset += 2; } break; case GETID3_ASF_Index_Object: // 6.2 ASF top-level Index Object (optional but recommended when appropriate, 0 or 1) // Field Name Field Type Size (bits) // Object ID GUID 128 // GUID for the Index Object - GETID3_ASF_Index_Object // Object Size QWORD 64 // Specifies the size, in bytes, of the Index Object, including at least 34 bytes of Index Object header // Index Entry Time Interval DWORD 32 // Specifies the time interval between each index entry in ms. // Index Specifiers Count WORD 16 // Specifies the number of Index Specifiers structures in this Index Object. // Index Blocks Count DWORD 32 // Specifies the number of Index Blocks structures in this Index Object. // Index Entry Time Interval DWORD 32 // Specifies the time interval between index entries in milliseconds. This value cannot be 0. // Index Specifiers Count WORD 16 // Specifies the number of entries in the Index Specifiers list. Valid values are 1 and greater. // Index Specifiers array of: varies // // * Stream Number WORD 16 // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127. // * Index Type WORD 16 // Specifies Index Type values as follows: // 1 = Nearest Past Data Packet - indexes point to the data packet whose presentation time is closest to the index entry time. // 2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire object or first fragment of an object. // 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. // Nearest Past Cleanpoint is the most common type of index. // Index Entry Count DWORD 32 // Specifies the number of Index Entries in the block. // * 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. // * Index Entries array of: varies // // * * Offsets DWORD varies // An offset value of 0xffffffff indicates an invalid offset value // shortcut $thisfile_asf['asf_index_object'] = array(); $thisfile_asf_asfindexobject = &$thisfile_asf['asf_index_object']; $ASFIndexObjectData = $NextObjectDataHeader.$this->fread(34 - 24); $offset = 24; $thisfile_asf_asfindexobject['objectid'] = $NextObjectGUID; $thisfile_asf_asfindexobject['objectid_guid'] = $NextObjectGUIDtext; $thisfile_asf_asfindexobject['objectsize'] = $NextObjectSize; $thisfile_asf_asfindexobject['entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4)); $offset += 4; $thisfile_asf_asfindexobject['index_specifiers_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2)); $offset += 2; $thisfile_asf_asfindexobject['index_blocks_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4)); $offset += 4; $ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count']); for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) { $IndexSpecifierStreamNumber = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2)); $offset += 2; $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['stream_number'] = $IndexSpecifierStreamNumber; $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 2)); $offset += 2; $thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type_text'] = $this->ASFIndexObjectIndexTypeLookup($thisfile_asf_asfindexobject['index_specifiers'][$IndexSpecifiersCounter]['index_type']); } $ASFIndexObjectData .= $this->fread(4); $thisfile_asf_asfindexobject['index_entry_count'] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4)); $offset += 4; $ASFIndexObjectData .= $this->fread(8 * $thisfile_asf_asfindexobject['index_specifiers_count']); for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) { $thisfile_asf_asfindexobject['block_positions'][$IndexSpecifiersCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 8)); $offset += 8; } $ASFIndexObjectData .= $this->fread(4 * $thisfile_asf_asfindexobject['index_specifiers_count'] * $thisfile_asf_asfindexobject['index_entry_count']); for ($IndexEntryCounter = 0; $IndexEntryCounter < $thisfile_asf_asfindexobject['index_entry_count']; $IndexEntryCounter++) { for ($IndexSpecifiersCounter = 0; $IndexSpecifiersCounter < $thisfile_asf_asfindexobject['index_specifiers_count']; $IndexSpecifiersCounter++) { $thisfile_asf_asfindexobject['offsets'][$IndexSpecifiersCounter][$IndexEntryCounter] = getid3_lib::LittleEndian2Int(substr($ASFIndexObjectData, $offset, 4)); $offset += 4; } } break; default: // Implementations shall ignore any standard or non-standard object that they do not know how to handle. if ($this->GUIDname($NextObjectGUIDtext)) { $this->warning('unhandled GUID "'.$this->GUIDname($NextObjectGUIDtext).'" {'.$NextObjectGUIDtext.'} in ASF body at offset '.($offset - 16 - 8)); } else { $this->warning('unknown GUID {'.$NextObjectGUIDtext.'} in ASF body at offset '.($this->ftell() - 16 - 8)); } $this->fseek(($NextObjectSize - 16 - 8), SEEK_CUR); break; } } if (isset($thisfile_asf_codeclistobject['codec_entries']) && is_array($thisfile_asf_codeclistobject['codec_entries'])) { foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) { switch ($streamdata['information']) { case 'WMV1': case 'WMV2': case 'WMV3': case 'MSS1': case 'MSS2': case 'WMVA': case 'WVC1': case 'WMVP': case 'WVP2': $thisfile_video['dataformat'] = 'wmv'; $info['mime_type'] = 'video/x-ms-wmv'; break; case 'MP42': case 'MP43': case 'MP4S': case 'mp4s': $thisfile_video['dataformat'] = 'asf'; $info['mime_type'] = 'video/x-ms-asf'; break; default: switch ($streamdata['type_raw']) { case 1: if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) { $thisfile_video['dataformat'] = 'wmv'; if ($info['mime_type'] == 'video/x-ms-asf') { $info['mime_type'] = 'video/x-ms-wmv'; } } break; case 2: if (strstr($this->TrimConvert($streamdata['name']), 'Windows Media')) { $thisfile_audio['dataformat'] = 'wma'; if ($info['mime_type'] == 'video/x-ms-asf') { $info['mime_type'] = 'audio/x-ms-wma'; } } break; } break; } } } switch (isset($thisfile_audio['codec']) ? $thisfile_audio['codec'] : '') { case 'MPEG Layer-3': $thisfile_audio['dataformat'] = 'mp3'; break; default: break; } if (isset($thisfile_asf_codeclistobject['codec_entries'])) { foreach ($thisfile_asf_codeclistobject['codec_entries'] as $streamnumber => $streamdata) { switch ($streamdata['type_raw']) { case 1: // video $thisfile_video['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']); break; case 2: // audio $thisfile_audio['encoder'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][$streamnumber]['name']); // AH 2003-10-01 $thisfile_audio['encoder_options'] = $this->TrimConvert($thisfile_asf_codeclistobject['codec_entries'][0]['description']); $thisfile_audio['codec'] = $thisfile_audio['encoder']; break; default: $this->warning('Unknown streamtype: [codec_list_object][codec_entries]['.$streamnumber.'][type_raw] == '.$streamdata['type_raw']); break; } } } if (isset($info['audio'])) { $thisfile_audio['lossless'] = (isset($thisfile_audio['lossless']) ? $thisfile_audio['lossless'] : false); $thisfile_audio['dataformat'] = (!empty($thisfile_audio['dataformat']) ? $thisfile_audio['dataformat'] : 'asf'); } if (!empty($thisfile_video['dataformat'])) { $thisfile_video['lossless'] = (isset($thisfile_audio['lossless']) ? $thisfile_audio['lossless'] : false); $thisfile_video['pixel_aspect_ratio'] = (isset($thisfile_audio['pixel_aspect_ratio']) ? $thisfile_audio['pixel_aspect_ratio'] : (float) 1); $thisfile_video['dataformat'] = (!empty($thisfile_video['dataformat']) ? $thisfile_video['dataformat'] : 'asf'); } if (!empty($thisfile_video['streams'])) { $thisfile_video['resolution_x'] = 0; $thisfile_video['resolution_y'] = 0; foreach ($thisfile_video['streams'] as $key => $valuearray) { if (($valuearray['resolution_x'] > $thisfile_video['resolution_x']) || ($valuearray['resolution_y'] > $thisfile_video['resolution_y'])) { $thisfile_video['resolution_x'] = $valuearray['resolution_x']; $thisfile_video['resolution_y'] = $valuearray['resolution_y']; } } } $info['bitrate'] = 0 + (isset($thisfile_audio['bitrate']) ? $thisfile_audio['bitrate'] : 0) + (isset($thisfile_video['bitrate']) ? $thisfile_video['bitrate'] : 0); if ((!isset($info['playtime_seconds']) || ($info['playtime_seconds'] <= 0)) && ($info['bitrate'] > 0)) { $info['playtime_seconds'] = ($info['filesize'] - $info['avdataoffset']) / ($info['bitrate'] / 8); } return true; } /** * @param int $CodecListType * * @return string */ public static function codecListObjectTypeLookup($CodecListType) { static $lookup = array( 0x0001 => 'Video Codec', 0x0002 => 'Audio Codec', 0xFFFF => 'Unknown Codec' ); return (isset($lookup[$CodecListType]) ? $lookup[$CodecListType] : 'Invalid Codec Type'); } /** * @return array */ public static function KnownGUIDs() { static $GUIDarray = array( 'GETID3_ASF_Extended_Stream_Properties_Object' => '14E6A5CB-C672-4332-8399-A96952065B5A', 'GETID3_ASF_Padding_Object' => '1806D474-CADF-4509-A4BA-9AABCB96AAE8', 'GETID3_ASF_Payload_Ext_Syst_Pixel_Aspect_Ratio' => '1B1EE554-F9EA-4BC8-821A-376B74E4C4B8', 'GETID3_ASF_Script_Command_Object' => '1EFB1A30-0B62-11D0-A39B-00A0C90348F6', 'GETID3_ASF_No_Error_Correction' => '20FB5700-5B55-11CF-A8FD-00805F5C442B', 'GETID3_ASF_Content_Branding_Object' => '2211B3FA-BD23-11D2-B4B7-00A0C955FC6E', 'GETID3_ASF_Content_Encryption_Object' => '2211B3FB-BD23-11D2-B4B7-00A0C955FC6E', 'GETID3_ASF_Digital_Signature_Object' => '2211B3FC-BD23-11D2-B4B7-00A0C955FC6E', 'GETID3_ASF_Extended_Content_Encryption_Object' => '298AE614-2622-4C17-B935-DAE07EE9289C', 'GETID3_ASF_Simple_Index_Object' => '33000890-E5B1-11CF-89F4-00A0C90349CB', 'GETID3_ASF_Degradable_JPEG_Media' => '35907DE0-E415-11CF-A917-00805F5C442B', 'GETID3_ASF_Payload_Extension_System_Timecode' => '399595EC-8667-4E2D-8FDB-98814CE76C1E', 'GETID3_ASF_Binary_Media' => '3AFB65E2-47EF-40F2-AC2C-70A90D71D343', 'GETID3_ASF_Timecode_Index_Object' => '3CB73FD0-0C4A-4803-953D-EDF7B6228F0C', 'GETID3_ASF_Metadata_Library_Object' => '44231C94-9498-49D1-A141-1D134E457054', 'GETID3_ASF_Reserved_3' => '4B1ACBE3-100B-11D0-A39B-00A0C90348F6', 'GETID3_ASF_Reserved_4' => '4CFEDB20-75F6-11CF-9C0F-00A0C90349CB', 'GETID3_ASF_Command_Media' => '59DACFC0-59E6-11D0-A3AC-00A0C90348F6', 'GETID3_ASF_Header_Extension_Object' => '5FBF03B5-A92E-11CF-8EE3-00C00C205365', 'GETID3_ASF_Media_Object_Index_Parameters_Obj' => '6B203BAD-3F11-4E84-ACA8-D7613DE2CFA7', 'GETID3_ASF_Header_Object' => '75B22630-668E-11CF-A6D9-00AA0062CE6C', 'GETID3_ASF_Content_Description_Object' => '75B22633-668E-11CF-A6D9-00AA0062CE6C', 'GETID3_ASF_Error_Correction_Object' => '75B22635-668E-11CF-A6D9-00AA0062CE6C', 'GETID3_ASF_Data_Object' => '75B22636-668E-11CF-A6D9-00AA0062CE6C', 'GETID3_ASF_Web_Stream_Media_Subtype' => '776257D4-C627-41CB-8F81-7AC7FF1C40CC', 'GETID3_ASF_Stream_Bitrate_Properties_Object' => '7BF875CE-468D-11D1-8D82-006097C9A2B2', 'GETID3_ASF_Language_List_Object' => '7C4346A9-EFE0-4BFC-B229-393EDE415C85', 'GETID3_ASF_Codec_List_Object' => '86D15240-311D-11D0-A3A4-00A0C90348F6', 'GETID3_ASF_Reserved_2' => '86D15241-311D-11D0-A3A4-00A0C90348F6', 'GETID3_ASF_File_Properties_Object' => '8CABDCA1-A947-11CF-8EE4-00C00C205365', 'GETID3_ASF_File_Transfer_Media' => '91BD222C-F21C-497A-8B6D-5AA86BFC0185', 'GETID3_ASF_Old_RTP_Extension_Data' => '96800C63-4C94-11D1-837B-0080C7A37F95', 'GETID3_ASF_Advanced_Mutual_Exclusion_Object' => 'A08649CF-4775-4670-8A16-6E35357566CD', 'GETID3_ASF_Bandwidth_Sharing_Object' => 'A69609E6-517B-11D2-B6AF-00C04FD908E9', 'GETID3_ASF_Reserved_1' => 'ABD3D211-A9BA-11cf-8EE6-00C00C205365', 'GETID3_ASF_Bandwidth_Sharing_Exclusive' => 'AF6060AA-5197-11D2-B6AF-00C04FD908E9', 'GETID3_ASF_Bandwidth_Sharing_Partial' => 'AF6060AB-5197-11D2-B6AF-00C04FD908E9', 'GETID3_ASF_JFIF_Media' => 'B61BE100-5B4E-11CF-A8FD-00805F5C442B', 'GETID3_ASF_Stream_Properties_Object' => 'B7DC0791-A9B7-11CF-8EE6-00C00C205365', 'GETID3_ASF_Video_Media' => 'BC19EFC0-5B4D-11CF-A8FD-00805F5C442B', 'GETID3_ASF_Audio_Spread' => 'BFC3CD50-618F-11CF-8BB2-00AA00B4E220', 'GETID3_ASF_Metadata_Object' => 'C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA', 'GETID3_ASF_Payload_Ext_Syst_Sample_Duration' => 'C6BD9450-867F-4907-83A3-C77921B733AD', 'GETID3_ASF_Group_Mutual_Exclusion_Object' => 'D1465A40-5A79-4338-B71B-E36B8FD6C249', 'GETID3_ASF_Extended_Content_Description_Object' => 'D2D0A440-E307-11D2-97F0-00A0C95EA850', 'GETID3_ASF_Stream_Prioritization_Object' => 'D4FED15B-88D3-454F-81F0-ED5C45999E24', 'GETID3_ASF_Payload_Ext_System_Content_Type' => 'D590DC20-07BC-436C-9CF7-F3BBFBF1A4DC', 'GETID3_ASF_Old_File_Properties_Object' => 'D6E229D0-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_ASF_Header_Object' => 'D6E229D1-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_ASF_Data_Object' => 'D6E229D2-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Index_Object' => 'D6E229D3-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Stream_Properties_Object' => 'D6E229D4-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Content_Description_Object' => 'D6E229D5-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Script_Command_Object' => 'D6E229D6-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Marker_Object' => 'D6E229D7-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Component_Download_Object' => 'D6E229D8-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Stream_Group_Object' => 'D6E229D9-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Scalable_Object' => 'D6E229DA-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Prioritization_Object' => 'D6E229DB-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Bitrate_Mutual_Exclusion_Object' => 'D6E229DC-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Inter_Media_Dependency_Object' => 'D6E229DD-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Rating_Object' => 'D6E229DE-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Index_Parameters_Object' => 'D6E229DF-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Color_Table_Object' => 'D6E229E0-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Language_List_Object' => 'D6E229E1-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Audio_Media' => 'D6E229E2-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Video_Media' => 'D6E229E3-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Image_Media' => 'D6E229E4-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Timecode_Media' => 'D6E229E5-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Text_Media' => 'D6E229E6-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_MIDI_Media' => 'D6E229E7-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Command_Media' => 'D6E229E8-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_No_Error_Concealment' => 'D6E229EA-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Scrambled_Audio' => 'D6E229EB-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_No_Color_Table' => 'D6E229EC-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_SMPTE_Time' => 'D6E229ED-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_ASCII_Text' => 'D6E229EE-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Unicode_Text' => 'D6E229EF-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_HTML_Text' => 'D6E229F0-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_URL_Command' => 'D6E229F1-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Filename_Command' => 'D6E229F2-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_ACM_Codec' => 'D6E229F3-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_VCM_Codec' => 'D6E229F4-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_QuickTime_Codec' => 'D6E229F5-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_DirectShow_Transform_Filter' => 'D6E229F6-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_DirectShow_Rendering_Filter' => 'D6E229F7-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_No_Enhancement' => 'D6E229F8-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Unknown_Enhancement_Type' => 'D6E229F9-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Temporal_Enhancement' => 'D6E229FA-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Spatial_Enhancement' => 'D6E229FB-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Quality_Enhancement' => 'D6E229FC-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Number_of_Channels_Enhancement' => 'D6E229FD-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Frequency_Response_Enhancement' => 'D6E229FE-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Media_Object' => 'D6E229FF-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Mutex_Language' => 'D6E22A00-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Mutex_Bitrate' => 'D6E22A01-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Mutex_Unknown' => 'D6E22A02-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_ASF_Placeholder_Object' => 'D6E22A0E-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Old_Data_Unit_Extension_Object' => 'D6E22A0F-35DA-11D1-9034-00A0C90349BE', 'GETID3_ASF_Web_Stream_Format' => 'DA1E6B13-8359-4050-B398-388E965BF00C', 'GETID3_ASF_Payload_Ext_System_File_Name' => 'E165EC0E-19ED-45D7-B4A7-25CBD1E28E9B', 'GETID3_ASF_Marker_Object' => 'F487CD01-A951-11CF-8EE6-00C00C205365', 'GETID3_ASF_Timecode_Index_Parameters_Object' => 'F55E496D-9797-4B5D-8C8B-604DFE9BFB24', 'GETID3_ASF_Audio_Media' => 'F8699E40-5B4D-11CF-A8FD-00805F5C442B', 'GETID3_ASF_Media_Object_Index_Object' => 'FEB103F8-12AD-4C64-840F-2A1D2F7AD48C', 'GETID3_ASF_Alt_Extended_Content_Encryption_Obj' => 'FF889EF1-ADEE-40DA-9E71-98704BB928CE', 'GETID3_ASF_Index_Placeholder_Object' => 'D9AADE20-7C17-4F9C-BC28-8555DD98E2A2', // https://metacpan.org/dist/Audio-WMA/source/WMA.pm 'GETID3_ASF_Compatibility_Object' => '26F18B5D-4584-47EC-9F5F-0E651F0452C9', // https://metacpan.org/dist/Audio-WMA/source/WMA.pm 'GETID3_ASF_Media_Object_Index_Parameters_Object'=> '6B203BAD-3F11-48E4-ACA8-D7613DE2CFA7', ); return $GUIDarray; } /** * @param string $GUIDstring * * @return string|false */ public static function GUIDname($GUIDstring) { static $GUIDarray = array(); if (empty($GUIDarray)) { $GUIDarray = self::KnownGUIDs(); } return array_search($GUIDstring, $GUIDarray); } /** * @param int $id * * @return string */ public static function ASFIndexObjectIndexTypeLookup($id) { static $ASFIndexObjectIndexTypeLookup = array(); if (empty($ASFIndexObjectIndexTypeLookup)) { $ASFIndexObjectIndexTypeLookup[1] = 'Nearest Past Data Packet'; $ASFIndexObjectIndexTypeLookup[2] = 'Nearest Past Media Object'; $ASFIndexObjectIndexTypeLookup[3] = 'Nearest Past Cleanpoint'; } return (isset($ASFIndexObjectIndexTypeLookup[$id]) ? $ASFIndexObjectIndexTypeLookup[$id] : 'invalid'); } /** * @param string $GUIDstring * * @return string */ public static function GUIDtoBytestring($GUIDstring) { // Microsoft defines these 16-byte (128-bit) GUIDs in the strangest way: // first 4 bytes are in little-endian order // next 2 bytes are appended in little-endian order // next 2 bytes are appended in little-endian order // next 2 bytes are appended in big-endian order // next 6 bytes are appended in big-endian order // AaBbCcDd-EeFf-GgHh-IiJj-KkLlMmNnOoPp is stored as this 16-byte string: // $Dd $Cc $Bb $Aa $Ff $Ee $Hh $Gg $Ii $Jj $Kk $Ll $Mm $Nn $Oo $Pp $hexbytecharstring = chr(hexdec(substr($GUIDstring, 6, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 4, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 2, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 0, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 11, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 9, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 16, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 14, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 19, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 21, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 24, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 26, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 28, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 30, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 32, 2))); $hexbytecharstring .= chr(hexdec(substr($GUIDstring, 34, 2))); return $hexbytecharstring; } /** * @param string $Bytestring * * @return string */ public static function BytestringToGUID($Bytestring) { $GUIDstring = str_pad(dechex(ord($Bytestring[3])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[2])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[1])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[0])), 2, '0', STR_PAD_LEFT); $GUIDstring .= '-'; $GUIDstring .= str_pad(dechex(ord($Bytestring[5])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[4])), 2, '0', STR_PAD_LEFT); $GUIDstring .= '-'; $GUIDstring .= str_pad(dechex(ord($Bytestring[7])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[6])), 2, '0', STR_PAD_LEFT); $GUIDstring .= '-'; $GUIDstring .= str_pad(dechex(ord($Bytestring[8])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[9])), 2, '0', STR_PAD_LEFT); $GUIDstring .= '-'; $GUIDstring .= str_pad(dechex(ord($Bytestring[10])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[11])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[12])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[13])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[14])), 2, '0', STR_PAD_LEFT); $GUIDstring .= str_pad(dechex(ord($Bytestring[15])), 2, '0', STR_PAD_LEFT); return strtoupper($GUIDstring); } /** * @param int $FILETIME * @param bool $round * * @return float|int */ public static function FILETIMEtoUNIXtime($FILETIME, $round=true) { // FILETIME is a 64-bit unsigned integer representing // the number of 100-nanosecond intervals since January 1, 1601 // UNIX timestamp is number of seconds since January 1, 1970 // 116444736000000000 = 10000000 * 60 * 60 * 24 * 365 * 369 + 89 leap days if ($round) { return intval(round(($FILETIME - 116444736000000000) / 10000000)); } return ($FILETIME - 116444736000000000) / 10000000; } /** * @param int $WMpictureType * * @return string */ public static function WMpictureTypeLookup($WMpictureType) { static $lookup = null; if ($lookup === null) { $lookup = array( 0x03 => 'Front Cover', 0x04 => 'Back Cover', 0x00 => 'User Defined', 0x05 => 'Leaflet Page', 0x06 => 'Media Label', 0x07 => 'Lead Artist', 0x08 => 'Artist', 0x09 => 'Conductor', 0x0A => 'Band', 0x0B => 'Composer', 0x0C => 'Lyricist', 0x0D => 'Recording Location', 0x0E => 'During Recording', 0x0F => 'During Performance', 0x10 => 'Video Screen Capture', 0x12 => 'Illustration', 0x13 => 'Band Logotype', 0x14 => 'Publisher Logotype' ); $lookup = array_map(function($str) { return getid3_lib::iconv_fallback('UTF-8', 'UTF-16LE', $str); }, $lookup); } return (isset($lookup[$WMpictureType]) ? $lookup[$WMpictureType] : ''); } /** * @param string $asf_header_extension_object_data * @param int $unhandled_sections * * @return array */ public function HeaderExtensionObjectDataParse(&$asf_header_extension_object_data, &$unhandled_sections) { // https://web.archive.org/web/20140419205228/http://msdn.microsoft.com/en-us/library/bb643323.aspx $offset = 0; $objectOffset = 0; $HeaderExtensionObjectParsed = array(); while ($objectOffset < strlen($asf_header_extension_object_data)) { $offset = $objectOffset; $thisObject = array(); $thisObject['guid'] = substr($asf_header_extension_object_data, $offset, 16); $offset += 16; $thisObject['guid_text'] = $this->BytestringToGUID($thisObject['guid']); $thisObject['guid_name'] = $this->GUIDname($thisObject['guid_text']); $thisObject['size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 8)); $offset += 8; if ($thisObject['size'] <= 0) { break; } switch ($thisObject['guid']) { case GETID3_ASF_Extended_Stream_Properties_Object: $thisObject['start_time'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 8)); $offset += 8; $thisObject['start_time_unix'] = $this->FILETIMEtoUNIXtime($thisObject['start_time']); $thisObject['end_time'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 8)); $offset += 8; $thisObject['end_time_unix'] = $this->FILETIMEtoUNIXtime($thisObject['end_time']); $thisObject['data_bitrate'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['buffer_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['initial_buffer_fullness'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['alternate_data_bitrate'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['alternate_buffer_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['alternate_initial_buffer_fullness'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['maximum_object_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['flags_raw'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['flags']['reliable'] = (bool) $thisObject['flags_raw'] & 0x00000001; $thisObject['flags']['seekable'] = (bool) $thisObject['flags_raw'] & 0x00000002; $thisObject['flags']['no_cleanpoints'] = (bool) $thisObject['flags_raw'] & 0x00000004; $thisObject['flags']['resend_live_cleanpoints'] = (bool) $thisObject['flags_raw'] & 0x00000008; $thisObject['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $thisObject['stream_language_id_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $thisObject['average_time_per_frame'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 8)); $offset += 8; $thisObject['stream_name_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $thisObject['payload_extension_system_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['stream_name_count']; $i++) { $streamName = array(); $streamName['language_id_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $streamName['stream_name_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $streamName['stream_name'] = substr($asf_header_extension_object_data, $offset, $streamName['stream_name_length']); $offset += $streamName['stream_name_length']; $thisObject['stream_names'][$i] = $streamName; } for ($i = 0; $i < $thisObject['payload_extension_system_count']; $i++) { $payloadExtensionSystem = array(); $payloadExtensionSystem['extension_system_id'] = substr($asf_header_extension_object_data, $offset, 16); $offset += 16; $payloadExtensionSystem['extension_system_id_text'] = $this->BytestringToGUID($payloadExtensionSystem['extension_system_id']); $payloadExtensionSystem['extension_system_size'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; if ($payloadExtensionSystem['extension_system_size'] <= 0) { break 2; } $payloadExtensionSystem['extension_system_info_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $payloadExtensionSystem['extension_system_info'] = substr($asf_header_extension_object_data, $offset, $payloadExtensionSystem['extension_system_info_length']); $offset += $payloadExtensionSystem['extension_system_info_length']; $thisObject['payload_extension_systems'][$i] = $payloadExtensionSystem; } break; case GETID3_ASF_Advanced_Mutual_Exclusion_Object: $thisObject['exclusion_type'] = substr($asf_header_extension_object_data, $offset, 16); $offset += 16; $thisObject['exclusion_type_text'] = $this->BytestringToGUID($thisObject['exclusion_type']); $thisObject['stream_numbers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['stream_numbers_count']; $i++) { $thisObject['stream_numbers'][$i] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; } break; case GETID3_ASF_Stream_Prioritization_Object: $thisObject['priority_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['priority_records_count']; $i++) { $priorityRecord = array(); $priorityRecord['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $priorityRecord['flags_raw'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $priorityRecord['flags']['mandatory'] = (bool) $priorityRecord['flags_raw'] & 0x00000001; $thisObject['priority_records'][$i] = $priorityRecord; } break; case GETID3_ASF_Padding_Object: // padding, skip it break; case GETID3_ASF_Metadata_Object: $thisObject['description_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['description_record_counts']; $i++) { $descriptionRecord = array(); $descriptionRecord['reserved_1'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); // must be zero $offset += 2; $descriptionRecord['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['name_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['data_type'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']); $descriptionRecord['data_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $descriptionRecord['name'] = substr($asf_header_extension_object_data, $offset, $descriptionRecord['name_length']); $offset += $descriptionRecord['name_length']; $descriptionRecord['data'] = substr($asf_header_extension_object_data, $offset, $descriptionRecord['data_length']); $offset += $descriptionRecord['data_length']; switch ($descriptionRecord['data_type']) { case 0x0000: // Unicode string break; case 0x0001: // BYTE array // do nothing break; case 0x0002: // BOOL $descriptionRecord['data'] = (bool) getid3_lib::LittleEndian2Int($descriptionRecord['data']); break; case 0x0003: // DWORD case 0x0004: // QWORD case 0x0005: // WORD $descriptionRecord['data'] = getid3_lib::LittleEndian2Int($descriptionRecord['data']); break; case 0x0006: // GUID $descriptionRecord['data_text'] = $this->BytestringToGUID($descriptionRecord['data']); break; } $thisObject['description_record'][$i] = $descriptionRecord; } break; case GETID3_ASF_Language_List_Object: $thisObject['language_id_record_counts'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['language_id_record_counts']; $i++) { $languageIDrecord = array(); $languageIDrecord['language_id_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 1)); $offset += 1; $languageIDrecord['language_id'] = substr($asf_header_extension_object_data, $offset, $languageIDrecord['language_id_length']); $offset += $languageIDrecord['language_id_length']; $thisObject['language_id_record'][$i] = $languageIDrecord; } break; case GETID3_ASF_Metadata_Library_Object: $thisObject['description_records_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['description_records_count']; $i++) { $descriptionRecord = array(); $descriptionRecord['language_list_index'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['name_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['data_type'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $descriptionRecord['data_type_text'] = self::metadataLibraryObjectDataTypeLookup($descriptionRecord['data_type']); $descriptionRecord['data_length'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $descriptionRecord['name'] = substr($asf_header_extension_object_data, $offset, $descriptionRecord['name_length']); $offset += $descriptionRecord['name_length']; $descriptionRecord['data'] = substr($asf_header_extension_object_data, $offset, $descriptionRecord['data_length']); $offset += $descriptionRecord['data_length']; if (preg_match('#^WM/Picture$#', str_replace("\x00", '', trim($descriptionRecord['name'])))) { $WMpicture = $this->ASF_WMpicture($descriptionRecord['data']); foreach ($WMpicture as $key => $value) { $descriptionRecord['data'] = $WMpicture; } unset($WMpicture); } $thisObject['description_record'][$i] = $descriptionRecord; } break; case GETID3_ASF_Index_Parameters_Object: $thisObject['index_entry_time_interval'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['index_specifiers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['index_specifiers_count']; $i++) { $indexSpecifier = array(); $indexSpecifier['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type_text'] = isset(static::$ASFIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']]) ? static::$ASFIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']] : 'invalid' ; $thisObject['index_specifiers'][$i] = $indexSpecifier; } break; case GETID3_ASF_Media_Object_Index_Parameters_Object: $thisObject['index_entry_count_interval'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['index_specifiers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['index_specifiers_count']; $i++) { $indexSpecifier = array(); $indexSpecifier['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type_text'] = isset(static::$ASFMediaObjectIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']]) ? static::$ASFMediaObjectIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']] : 'invalid' ; $thisObject['index_specifiers'][$i] = $indexSpecifier; } break; case GETID3_ASF_Timecode_Index_Parameters_Object: // 4.11 Timecode Index Parameters Object (mandatory only if TIMECODE index is present in file, 0 or 1) // Field name Field type Size (bits) // Object ID GUID 128 // GUID for the Timecode Index Parameters Object - ASF_Timecode_Index_Parameters_Object // Object Size QWORD 64 // Specifies the size, in bytes, of the Timecode Index Parameters Object. Valid values are at least 34 bytes. // Index Entry Count Interval DWORD 32 // This value is ignored for the Timecode Index Parameters Object. // Index Specifiers Count WORD 16 // Specifies the number of entries in the Index Specifiers list. Valid values are 1 and greater. // Index Specifiers array of: varies // // * Stream Number WORD 16 // Specifies the stream number that the Index Specifiers refer to. Valid values are between 1 and 127. // * Index Type WORD 16 // Specifies the type of index. Values are defined as follows (1 is not a valid value): // 2 = Nearest Past Media Object - indexes point to the closest data packet containing an entire video frame or the first fragment of a video frame // 3 = Nearest Past Cleanpoint - indexes point to the closest data packet containing an entire video frame (or first fragment of a video frame) that is a key frame. // Nearest Past Media Object is the most common value $thisObject['index_entry_count_interval'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 4)); $offset += 4; $thisObject['index_specifiers_count'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; for ($i = 0; $i < $thisObject['index_specifiers_count']; $i++) { $indexSpecifier = array(); $indexSpecifier['stream_number'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 2)); $offset += 2; $indexSpecifier['index_type_text'] = isset(static::$ASFTimecodeIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']]) ? static::$ASFTimecodeIndexParametersObjectIndexSpecifiersIndexTypes[$indexSpecifier['index_type']] : 'invalid' ; $thisObject['index_specifiers'][$i] = $indexSpecifier; } break; case GETID3_ASF_Compatibility_Object: $thisObject['profile'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 1)); $offset += 1; $thisObject['mode'] = getid3_lib::LittleEndian2Int(substr($asf_header_extension_object_data, $offset, 1)); $offset += 1; break; default: $unhandled_sections++; if ($this->GUIDname($thisObject['guid_text'])) { $this->warning('unhandled Header Extension Object GUID "'.$this->GUIDname($thisObject['guid_text']).'" {'.$thisObject['guid_text'].'} at offset '.($offset - 16 - 8)); } else { $this->warning('unknown Header Extension Object GUID {'.$thisObject['guid_text'].'} in at offset '.($offset - 16 - 8)); } break; } $HeaderExtensionObjectParsed[] = $thisObject; $objectOffset += $thisObject['size']; } return $HeaderExtensionObjectParsed; } /** * @param int $id * * @return string */ public static function metadataLibraryObjectDataTypeLookup($id) { static $lookup = array( 0x0000 => 'Unicode string', // The data consists of a sequence of Unicode characters 0x0001 => 'BYTE array', // The type of the data is implementation-specific 0x0002 => 'BOOL', // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer. Only 0x0000 or 0x0001 are permitted values 0x0003 => 'DWORD', // The data is 4 bytes long and should be interpreted as a 32-bit unsigned integer 0x0004 => 'QWORD', // The data is 8 bytes long and should be interpreted as a 64-bit unsigned integer 0x0005 => 'WORD', // The data is 2 bytes long and should be interpreted as a 16-bit unsigned integer 0x0006 => 'GUID', // The data is 16 bytes long and should be interpreted as a 128-bit GUID ); return (isset($lookup[$id]) ? $lookup[$id] : 'invalid'); } /** * @param string $data * * @return array */ public function ASF_WMpicture(&$data) { //typedef struct _WMPicture{ // LPWSTR pwszMIMEType; // BYTE bPictureType; // LPWSTR pwszDescription; // DWORD dwDataLen; // BYTE* pbData; //} WM_PICTURE; $WMpicture = array(); $offset = 0; $WMpicture['image_type_id'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 1)); $offset += 1; $WMpicture['image_type'] = self::WMpictureTypeLookup($WMpicture['image_type_id']); $WMpicture['image_size'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 4)); $offset += 4; $WMpicture['image_mime'] = ''; do { $next_byte_pair = substr($data, $offset, 2); $offset += 2; $WMpicture['image_mime'] .= $next_byte_pair; } while ($next_byte_pair !== "\x00\x00"); $WMpicture['image_description'] = ''; do { $next_byte_pair = substr($data, $offset, 2); $offset += 2; $WMpicture['image_description'] .= $next_byte_pair; } while ($next_byte_pair !== "\x00\x00"); $WMpicture['dataoffset'] = $offset; $WMpicture['data'] = substr($data, $offset); $imageinfo = array(); $WMpicture['image_mime'] = ''; $imagechunkcheck = getid3_lib::GetDataImageSize($WMpicture['data'], $imageinfo); unset($imageinfo); if (!empty($imagechunkcheck)) { $WMpicture['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]); } if (!isset($this->getid3->info['asf']['comments']['picture'])) { $this->getid3->info['asf']['comments']['picture'] = array(); } $this->getid3->info['asf']['comments']['picture'][] = array('data'=>$WMpicture['data'], 'image_mime'=>$WMpicture['image_mime']); return $WMpicture; } /** * Remove terminator 00 00 and convert UTF-16LE to Latin-1. * * @param string $string * * @return string */ public static function TrimConvert($string) { return trim(getid3_lib::iconv_fallback('UTF-16LE', 'ISO-8859-1', self::TrimTerm($string)), ' '); } /** * Remove terminator 00 00. * * @param string $string * * @return string */ public static function TrimTerm($string) { // remove terminator, only if present (it should be, but...) if (substr($string, -2) === "\x00\x00") { $string = substr($string, 0, -2); } return $string; } }

تفاعل

حكاية أول حوار مع روبوت : محمد طه يروى الكواليس

يونيو 5, 2025

11٬302 6 دقائق

أجابت الآلة على الأسئلة ؟: ماذا قال روبوت ل محمد طه؟

بعد 8 سنوات .. تنبؤات الروبوت تتحول إلى واقع..

حروب 2025 في حوار منذ2017؟

: محمد طه يكشف أسرار حول الذكاء الاصطناعي

كتبت : فرح سمير

تضمن حواراً فريدًا من نوعه، BBC في عام 2017، شهد الإعلام العربي حدثًا غير مسبوق، حيث تم بث مباشر عبر قناة العربية

أُجري مع روبوت مدعوم بالذكاء الاصطناعي يحاكي البشر .وكان هذا الحوار من تقديم الإعلامي محمد طه، مراسل الشؤون التكنولوجية في القناة

منذ ذلك الحين، واصل محمد طه تقديم أبرز التقارير والتغطيات لأهم المؤتمرات العالمية، وكان دائمًا مميز ا في تناول أحدث التطورات التكنولوجية وفي هذا اللقاء الحصري، يحدثنا عن كواليس حواره مع الروبوت “صوفيا”، ويتطرق إلى آرائه حول الذكاء الاصطناعي، ومستقبل الإعلام، والتحولات التقنية التي باتت تؤثر في كل القطاعات

– صف لي شعورك عندما أجابك الروبوت، واستطاع بالفعل مجاراة الحوار، نظرًا لأن المقابلة كانت في عام 2017 ؟

في البداية، كان لدي انطباع بأن الروبوت قد لا يكون كائناً مستقلًً، بل ربما يكون هناك شخص ما يتواصل معه أو يدعمه في تقديم الإجابات. لم أكن مقتنعاً في البداية بقدرة الروبوت على الرد على أسئلتي بشكل مستقل دون أي مساعدة من شخص آخر.هذا الأمر لم يكن شائعاً كما هو اليوم.

أثناء تواجدي في معرض، تم إخباري بإمكانية إجراء محادثة مع روبوت، ولم أصدق ذلك. كان انطباعي الأول أن هناك شخصًا يستمع إلى سؤالي ويقوم بالرد عليه بشكل مستقل ودون تدخل بشري. لم أكن أتخيل أن الروبوت قادر على تقديم إجابات مباشرة من مكان ما أو من غرفة تحكم.

– هل قمَتَ بتعديل أسلوبك الصحفي أو الحواري ليتناسب مع قدرة الروبوت على معالجة الأمر والتجاوب معك؟

كان هدفي الأساسي خلال الحوار ه والحفاظ على طبيعية التفاعل، وه وما شكل تحديًا كبيرًا. فعندما تواجه جهازًا توجه له أسئلة ويقوم بالرد عليك، فإن ذلك كان يعتبر في السابق نوعًا من الخيال. نحن في مجال الصحافة والإعلام نملك خبرة واسعة في التعامل مع البشر، حيث يمكنني رؤية تعبيرات وجهك وتفاعل جسدك مما يساعدني على تعديل أسلوبي وفق ذلك. لكن عند التعامل مع الروبوت، تفتقر إلى تعبيرات الوجه والملامح التفاعلية، مما يجعل ردود الفعل غير قابلة للتنب ؤ.

ما الذي لاحظته من فروقات واضحة في طريقة التعامل مع روبوت مقارنة بمقابلة إعلامية طبيعية مع إنسان؟

بالتأكيد هناك اختلافات تتعلق بتحضير المقابلة. عند إجراء مقابلة مع إنسان، يتم إعداد الحوار بناءً على شخصية الضيف وخلفيته. أما بالنسبة للروبوت فلم أكن أملك معلومات مسبقة عنه. كان تركيزي منصبًا على طبيعة الروبوت نفسه وعلاقته بالإنسان ومستقبله.

ذكرت في بداية المراسلة أن ردود أفعالها تشبه البشر، فهل تشبه ردود أفعال الروبوت وتعبير وجهه الإنسان؟ كما ذكرت أثناء تصوير المقابلة أن “الروبوت” المصنوع يحُاكي الأنثى البشرية، وحصل على الجنسية السعودية؟

نعم ذكرت بالفعل جنسيتهاً ولقد ذكرت بالفعل أن للروبوت تعبيرات وجه وحركات معينة تجعل الشخص يتساءل عما إذا كان يتعامل مع كائن بشري أو شبه بشري أو آلة. خلًل المقابلة لم نكن معتادين على هذه التقنية الجديدة.

– من خلال الحوار مع الروبوت، هل ترى أن الاندماج والتعامل مع الروبوتات يُعد تحدياً، أم أنه سهل التأقلم؟ وهل يمثل هذا تحدياً لنا كإعلاميين أو كبشر عمومًا؟

لا أعتقد أنه يمثل تحديًا كبيرًا؛ فقد أصبح الناس معتادين بشكل متزايد على الذكاء الاصطناعي وبدأوا يتأقلمون معه بسهولة. سأعطيك مثالًا آخر: كنتُ في إحدى الدول، وطلبتُ بعض أدوات تنظيف الأسنان، وعندما فتحت الباب، فوجئت بأن روبوت أحضرها لي. لم أستغرب، لأني بالفعل أصبحت أتوقع مثل هذه الأمور .

في وقت الحوار عام 2017، هل واجهت أي صعوبات أو تحديات؟

بالتأكيد كانت هناك حالة من الاستغراب وكان التحدي يكمن في الحفاظ على أسلوب تلقائي وطبيعي رغم أنني كنت أتحدث إلى آلة. كان عليّ أن أتعامل معها كإنسان حقيقي، وأن أطرح عليها أسئلة كما أفعل في مقابلاتي المعتادة، حتى يكون الحوار سلسًا.

– خلال الحوار، طرحتَ سؤا الا: “بماذا ترغبين في العمل في المستقبل؟” فأجابت الروبوت “صوفيا” بإجابة مفاجئة حول التظاهرات الدموية. كيف استقبلت هذه الإجابة؟

كانت إجابتها صادمة للغاية وقد أثارت تساؤلات حول دقة توقعاتها والخوارزميات المستخدمة خلف تلك التحليلات التي صرحتها وكانت “في المستقبل سيكون هناك تظاهرات دموية وصراعات ما لم نصبح أكثر ذكاءً واجتماعية مثلي، وربما نساعد في التعامل مع هذا الوضع.”

في ذلك الوقت، لم تكن هناك مؤشرات على أي حروب أو صراعات، بل كانت الأمور مستقرة نسب ايا. لكن مع مرور السنوات، وقعت فعل ايا أحداث دموية وصراعات كبيرة.

هذا يثير التساؤلات حول دقة توقعات الذكاء الاصطناعي، والخوارزميات التي تقف خلف هذه التحليلات.

هل تعتقد أن توقعاتها كانت مبنية على خوارزميات دقيقة، أم تدخل بشري؟

قد تكون مستندة إلى تحليلات بشرية أ و تقارير صحفية؛ فالروبوت لا يفكر كما نفكر، بل يعتمد على البيانات والخوارزميات المعقدة لتقديم توقعاته المستقبلية. هذا يجعلنا نعود إلى التساؤل: إلى أي مدى تستطيع الروبوتات أن تتعلّم ذاتيًا؟ وهل يمكن أن تتخذ قرارات مستقلة مستقبلاً ؟

هل من الممكن أن تنشئ الروبوتات شركات وتدير أعما الا مستقلة ؟

نعم، كان هناك تقارير أعدتها عن روبوتات قامت بتأسيس شركات خاصة بها وأصبحت تديرها بشكل مستقل تقريب اً باستثناء وجود شخص واحد فقط لدعم العمليات الإدارية.

كنت قد غطيت مؤتمر باريس مؤخ ارا. ما أبرز ما جاء فيه؟

فرنسا نظّمت أكبر قمة عالمية للذكاء الاصطناعي منذ ستة أسابيع، وشاركت فيها شخصيات دولية رفيعة المستوى. شهد المؤتمر دعوات لوضع قوانين أخلاقية لتنظيم تطور الذكاء الاصطناعي بينما رفضت بعض الدول الكبرى مثل الولايات المتحدة وبريطانيا الالتزام بهذه المبادئ. الاستمرار في التطوير دون قيود.

وفي نهاية القمة، صدر “إعلان باريس”، الذي شددّ على أهمية مراعاة الأخلاقيات في تطوير الذكاء الاصطناعي.

–إذا بنا ء على ما تم ذكره، بماذا توصي الصحفيين في الفترة القادمة؟ فيما يلتزمون به أ ويلتفتون إليه؟ وبماذا توصيهم أو ما النصائح التي تنصح الصحفيين أن يتبعوها لمجاراة التقدم المستم ر في التكنولوجيا أو الذكاء الاصطناعي؟

يجب على الصحفيين تعلم استخدام الذكاء الاصطناعي وتطبيقه في كل جوانب عملهم، مثل إعداد الفيديوهات والبحث، مع الالتزام بالأخلًقية في استخدامه. هذه التقنية تسهل مهامهم وتوفر الوقت والجهد، مما يحسن جودة العمل. من الضروري أن يكون الجميع قادرين على تمييز الأعمال التي تنتجها الآلات وعدم الاعتماد عليها كلياً واستخدامها كأداة مساعدة. وانا كصحفي في التلفزيوني أركز على الجانب البصري واستخدم تقنياته الجرافيكية والتوضيحية الخاصة به عند الظهور في التلفزيون، ولا يعتمد على غيره في إنتاج عمله بفضل تعليمه وخبرته وفريقه الذي يساعده في إنتاج محتوى بصري قوي ومميز. ورغم تطور الذكاء الاصطناعي، فإنه لا يزال غير قادر على إنتاج أعمال تجمع بين العناصر البصرية والشخصية الفريدة للصحفي أو المراسل، ويخدم الصحفي فقط في مجال محدد. يجب على الصحفيين بناء شخصية وأسلوب وحضور خاص بهم ودمجها مع تقنياتهم ومعارفهم، وتوظيف الذكاء الاصطناعي بما يتناسب مع أسلوبهم وحضورهم لتحقيق فائدة أكبر. ينبغي على الصحفيين التفكير في القيمة المضافة والتركيز على الجودة لا الكمية، فالأهم هو محتوى وأهمية ما يقدم للجمهور لا عدد الأخبار. الكاتب يوجه تركيزه نحو إعداد تقرير مصور أسبوعي أو شهري شامل وعالي الجودة لجذب الجمهور. لذا، من الضروري أن يوجه الصحفيون اهتمامهم نحو تقديم محتوى عالي الجودة بدلاً من التركيز على الكم فقط.

-عند لمس الروبوت، هل كان هنا ك أي اختلاف ب ي ملمس جلد الإنسان وجلده؟

بالنسبة للمس بين جلد الإنسان وجلد الروبوت، لا يوجد فرق كبير. ومع ذلك، يتردد الناس في لمس الروبوت بسبب حساسية. الموضوع وارتباط ه بحقو ق الروبوت ككائن إنساني. وكان من الضروري مراعاة جميع الثقافات المختلفة ف ي هذا السياق.

بما أن الحوار أُجري منذ ٨ أعوام ف ٢٠١٧، فما هى التطورات التى حدثت للروبوتات بشكل عا م خلال السنوات الثمان الماضية من وجهة نظرك ؟

نحن على أعتاب عقد جديد حيث يصعب تصور تأثير التكنولوجيا على مجالات مثل الإعلًم والطب والاقتصاد. جميع المؤسسات تفكر بجدية في مستقبل موظفيها وأنظمتها، مما يتطلب استعداًدًا كبيرًا للتغييرات المرتقبة. هناك شخصيات بارزة مثل إيلون ماسك تعبر عن أهمية استكشاف المريخ، وتدور نقاشات بينه وبين مؤسس وكالة ناسا حول أولويات الرحلًت الفضائية. يؤكد ماسك على ضرورة إنشاء قاعدة على المريخ نظرًا للتغيرات التي نشهدها على كوكب الأرض.

وفي نهاية الحوار، وبعد شكر ك له، و جه إليك سؤا لا بصيغة تح د وأمر، حيث قال” :قبل أن تمضي، ما هي توقعاتك للمستقبل؟”، فهل شعر ت حينها بالخطورة من تح ديه للعقل البشري؟ وهل توقعت أنه سيأتي يو م يكو ن فيه هو من يوجه الأسئلة ويغطي الأخبار ويحل محل الإعلامي؟

هذا السؤال جعلني أشعر بالراحة في التعامل مع الروبوت، حيث كان الحوار تفاعلياً وحقيقيًا .لم أكن أتوقع يومًا أن يأتي وقت يكون فيه روبوت هو من يسأل ويخطط الأخبار، بل ويحاكي الإعلام بشكل عام .التكنولوجيا اليوم تفوق أي توقعات سابقة .قبل بضع .سنوات فقط، لم يكن هناك تصو ر لوجود روبوتات قادرة على التعامل مع الأخبار بنفس كفاءة البشر.

من خلال خبرتك في المجال الإعلامي، هل سيقبل الجمهور بفكرة وجود مذيع برامج أو مراسل أو صحفي انه آلة ( روبوت)؟ هل هناك تجارب سابقة من بي بي سي تشير إلى تقبل الجمهور لهذا الأمر ؟

لا تزال مؤسسة البي بي سي تقوم بتجارب لفهم مدى تفاعل الجمهور واستجابته لهذه الآلات أو المذيعين الآليين قبل تنفيذها بشكل كامل. ستقوم البي بي سي بإجراء بحوث للجمهور لفهم كيفية تفاعله م مع الروبوتات والذكاء الاصطناعي ومقارنتها بالتفاعل مع الأشخاص العاديين. بالنظر إلى المستقبل، قد تتطور الروبوتات لتصبح أكثر ذكاءً وقدرة ً على التكيف مع احتياجات الجمهور

بناءا على تقنية (Machine Learning)) نظرية التعلم الآلي: يرى إيلون ماسك أن نظرية التعلم الآلي قد تؤدي إلى تطور الروبوتات بشكل مستقل وقدرتها على التحكم بالبشر، وهو ما يظهر في أفلًم الذكاء الاصطناعي كمصدر للمخاوف والتحديات. يوجد خلًف بين ماسك وزوكربيرج حول هذا الاحتمال، حيث يعتبر زوكربيرج مخاوف ماسك مبالغًا فيها، بينما يشدد ماسك على أهمية الاستعداد لهذا السيناريو بحذر. في الوقت نفسه، تكشف الدراسات عن تطور علًقات عاطفية بين البشر والشات بوتس، وهي ظاهرة بدأت في الغرب وتظهر في الشرق الأوسط، مما يثير تساؤلات حول طبيعة العلًقة المستقبلية بين الإنسان والآلة وتأثيرها على مفاهيم السلطة والسيطرة.

في ختام هذا الحور المثير مع الإعلامي “محمد طه” ، نرى بوضوح كيف بدأ مشهد الإعلام والتقنية في التغي ر جذرياً منذ عام 2017 مع أول حوار تلفزيوني مع روبوت. تجربة طه مع “صوفيا” لم تكن مجرد حدث إعلامي فريد، ب ل كانت نافذة مبكرة على مستقبل يتقاطع فيه الإنسان والآلة بشكل متزايد.

يونيو 5, 2025

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