/////////////////////////////////////////////////////////////////
/// 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
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'
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));
public function Analyze() {
$info = &$this->getid3->info;
$thisfile_audio = &$info['audio'];
$thisfile_video = &$info['video'];
$thisfile_asf = &$info['asf'];
$thisfile_asf['comments'] = array();
$thisfile_asf_comments = &$thisfile_asf['comments'];
$thisfile_asf['header_object'] = array();
$thisfile_asf_headerobject = &$thisfile_asf['header_object'];
// * 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]
// 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);
$thisfile_asf_streambitratepropertiesobject = array();
$thisfile_asf_codeclistobject = array();
$StreamPropertiesObjectData = array();
for ($HeaderObjectsCounter = 0; $HeaderObjectsCounter < $thisfile_asf_headerobject['headerobjects']; $HeaderObjectsCounter++) {
$NextObjectGUID = substr($ASFHeaderData, $offset, 16);
$NextObjectGUIDtext = $this->BytestringToGUID($NextObjectGUID);
$NextObjectSize = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
switch ($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
// * 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
$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);
$thisfile_asf_filepropertiesobject['fileid_guid'] = $this->BytestringToGUID($thisfile_asf_filepropertiesobject['fileid']);
$thisfile_asf_filepropertiesobject['filesize'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $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']);
$thisfile_asf_filepropertiesobject['data_packets'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
$thisfile_asf_filepropertiesobject['play_duration'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
$thisfile_asf_filepropertiesobject['send_duration'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
$thisfile_asf_filepropertiesobject['preroll'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
$thisfile_asf_filepropertiesobject['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $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));
$thisfile_asf_filepropertiesobject['max_packet_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
$thisfile_asf_filepropertiesobject['max_bitrate'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
if ($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']);
// 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']);
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
// * 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);
$StreamPropertiesObjectData['stream_type_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['stream_type']);
$StreamPropertiesObjectData['error_correct_type'] = substr($ASFHeaderData, $offset, 16);
$StreamPropertiesObjectData['error_correct_guid'] = $this->BytestringToGUID($StreamPropertiesObjectData['error_correct_type']);
$StreamPropertiesObjectData['time_offset'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 8));
$StreamPropertiesObjectData['type_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
$StreamPropertiesObjectData['error_data_length'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
$StreamPropertiesObjectData['flags_raw'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $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);
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');
case GETID3_ASF_Command_Media:
$thisfile_asf['stream_properties_object'][$StreamPropertiesObjectStreamNumber] = $StreamPropertiesObjectData;
unset($StreamPropertiesObjectData); // clear for next stream, if any
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
$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);
$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).')');
$thisfile_asf_headerextensionobject['reserved_2'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
if ($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"');
$thisfile_asf_headerextensionobject['extension_data_size'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
$thisfile_asf_headerextensionobject['extension_data'] = substr($ASFHeaderData, $offset, $thisfile_asf_headerextensionobject['extension_data_size']);
$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'];
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
$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);
$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}');
$thisfile_asf_codeclistobject['codec_entries_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 4));
if ($thisfile_asf_codeclistobject['codec_entries_count'] > 0) {
$thisfile_asf_codeclistobject['codec_entries'] = array();
for ($CodecEntryCounter = 0; $CodecEntryCounter < $thisfile_asf_codeclistobject['codec_entries_count']; $CodecEntryCounter++) {
$thisfile_asf_codeclistobject['codec_entries'][$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));
$thisfile_asf_codeclistobject_codecentries_current['type'] = self::codecListObjectTypeLookup($thisfile_asf_codeclistobject_codecentries_current['type_raw']);
$CodecNameLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
$thisfile_asf_codeclistobject_codecentries_current['name'] = substr($ASFHeaderData, $offset, $CodecNameLength);
$offset += $CodecNameLength;
$CodecDescriptionLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2)) * 2; // 2 bytes per character
$thisfile_asf_codeclistobject_codecentries_current['description'] = substr($ASFHeaderData, $offset, $CodecDescriptionLength);
$offset += $CodecDescriptionLength;
$CodecInformationLength = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $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: "'.$thisfile_asf_codeclistobject_codecentries_current['description'].'"');
list($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) {
$thisfile_audio['sample_rate'] = 8000;
$thisfile_audio['sample_rate'] = 11025;
$thisfile_audio['sample_rate'] = 12000;
$thisfile_audio['sample_rate'] = 16000;
$thisfile_audio['sample_rate'] = 22050;
$thisfile_audio['sample_rate'] = 24000;
$thisfile_audio['sample_rate'] = 32000;
$thisfile_audio['sample_rate'] = 44100;
$thisfile_audio['sample_rate'] = 48000;
$this->warning('unknown frequency: "'.$AudioCodecFrequency.'" ('.$this->TrimConvert($thisfile_asf_codeclistobject_codecentries_current['description']).')');
if (!isset($thisfile_audio['channels'])) {
if (strstr($AudioCodecChannels, 'stereo')) {
$thisfile_audio['channels'] = 2;
} elseif (strstr($AudioCodecChannels, 'mono')) {
$thisfile_audio['channels'] = 1;
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
$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);
$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}');
$thisfile_asf_scriptcommandobject['commands_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));
$thisfile_asf_scriptcommandobject['command_types_count'] = getid3_lib::LittleEndian2Int(substr($ASFHeaderData, $offset, 2));