getid3_matroska Class Reference

http://www.matroska.org/technical/specs/index.html More...

Inheritance diagram for getid3_matroska:

Collaboration diagram for getid3_matroska:

Public Member Functions
	Analyze ()
Public Member Functions inherited from getid3_handler
	__construct (getID3 $getid3, $call_module=null)
	Analyze ()
	AnalyzeString ($string)
	setStringMode ($string)
	saveAttachment ($name, $offset, $length, $image_mime=null)

Static Public Member Functions
static	TargetTypeValue ($target_type)
static	BlockLacingType ($lacingtype)
static	CodecIDtoCommonName ($codecid)
static	displayUnit ($value)

Static Public Attributes
static	$hide_clusters = true
static	$parse_whole_file = false

Private Member Functions
	parseEBML (&$info)
	EnsureBufferHasEnoughData ($min_data=1024)
	readEBMLint ()
	readEBMLelementData ($length, $check_buffer=false)
	getEBMLelement (&$element, $parent_end, $get_data=false)
	unhandledElement ($type, $line, $element)
	ExtractCommentsSimpleTag ($SimpleTagArray)
	HandleEMBLSimpleTag ($parent_end)
	HandleEMBLClusterBlock ($element, $block_type, &$info)

Static Private Member Functions
static	EBML2Int ($EBMLstring)
static	EBMLdate2unix ($EBMLdatestamp)
static	EBMLidName ($value)
static	getDefaultStreamInfo ($streams)

Private Attributes
	$EBMLbuffer = ''
	$EBMLbuffer_offset = 0
	$EBMLbuffer_length = 0
	$current_offset = 0
	$unuseful_elements = array(EBML_ID_CRC32, EBML_ID_VOID)

Additional Inherited Members
Protected Member Functions inherited from getid3_handler
	ftell ()
	fread ($bytes)
	fseek ($bytes, $whence=SEEK_SET)
	feof ()
	isDependencyFor ($module)
	error ($text)
	warning ($text)
	notice ($text)
Protected Attributes inherited from getid3_handler
	$getid3
	$data_string_flag = false
	$data_string = ''
	$data_string_position = 0
	$data_string_length = 0

Detailed Description

http://www.matroska.org/technical/specs/index.html

Todo:

Rewrite EBML parser to reduce it's size and honor default element values

After rewrite implement stream size calculation, that will provide additional useful info and enable AAC/FLAC audio bitrate detection

Definition at line 216 of file module.audio-video.matroska.php.

Member Function Documentation

Analyze()

getid3_matroska::Analyze

(

)

Definition at line 229 of file module.audio-video.matroska.php.

References $i, $info, $key, getID3\ATTACHMENTS_NONE, getid3_handler\error(), ExtractCommentsSimpleTag(), getid3_riff\fourccLookup(), getid3_lib\IncludeDependency(), getid3_riff\ParseBITMAPINFOHEADER(), parseEBML(), getid3_riff\parseWAVEFORMATex(), and getid3_handler\warning().

        {
                $info = &$this->getid3->info;

                // parse container
                try {
                        $this->parseEBML($info);
                } catch (Exception $e) {
                        $this->error('EBML parser: '.$e->getMessage());
                }

                // calculate playtime
                if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
                        foreach ($info['matroska']['info'] as $key => $infoarray) {
                                if (isset($infoarray['Duration'])) {
                                        // TimecodeScale is how many nanoseconds each Duration unit is
                                        $info['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);
                                        break;
                                }
                        }
                }

                // extract tags
                if (isset($info['matroska']['tags']) && is_array($info['matroska']['tags'])) {
                        foreach ($info['matroska']['tags'] as $key => $infoarray) {
                                $this->ExtractCommentsSimpleTag($infoarray);
                        }
                }

                // process tracks
                if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
                        foreach ($info['matroska']['tracks']['tracks'] as $key => $trackarray) {

                                $track_info = array();
                                $track_info['dataformat'] = self::CodecIDtoCommonName($trackarray['CodecID']);
                                $track_info['default'] = (isset($trackarray['FlagDefault']) ? $trackarray['FlagDefault'] : true);
                                if (isset($trackarray['Name'])) { $track_info['name'] = $trackarray['Name']; }

                                switch ($trackarray['TrackType']) {

                                        case 1: // Video
                                                $track_info['resolution_x'] = $trackarray['PixelWidth'];
                                                $track_info['resolution_y'] = $trackarray['PixelHeight'];
                                                $track_info['display_unit'] = self::displayUnit(isset($trackarray['DisplayUnit']) ? $trackarray['DisplayUnit'] : 0);
                                                $track_info['display_x']    = (isset($trackarray['DisplayWidth']) ? $trackarray['DisplayWidth'] : $trackarray['PixelWidth']);
                                                $track_info['display_y']    = (isset($trackarray['DisplayHeight']) ? $trackarray['DisplayHeight'] : $trackarray['PixelHeight']);

                                                if (isset($trackarray['PixelCropBottom'])) { $track_info['crop_bottom'] = $trackarray['PixelCropBottom']; }
                                                if (isset($trackarray['PixelCropTop']))    { $track_info['crop_top']    = $trackarray['PixelCropTop']; }
                                                if (isset($trackarray['PixelCropLeft']))   { $track_info['crop_left']   = $trackarray['PixelCropLeft']; }
                                                if (isset($trackarray['PixelCropRight']))  { $track_info['crop_right']  = $trackarray['PixelCropRight']; }
                                                if (isset($trackarray['DefaultDuration'])) { $track_info['frame_rate']  = round(1000000000 / $trackarray['DefaultDuration'], 3); }
                                                if (isset($trackarray['CodecName']))       { $track_info['codec']       = $trackarray['CodecName']; }

                                                switch ($trackarray['CodecID']) {
                                                        case 'V_MS/VFW/FOURCC':
                                                                getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);

                                                                $parsed = getid3_riff::ParseBITMAPINFOHEADER($trackarray['CodecPrivate']);
                                                                $track_info['codec'] = getid3_riff::fourccLookup($parsed['fourcc']);
                                                                $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $parsed;
                                                                break;

                                                        /*case 'V_MPEG4/ISO/AVC':
                                                                $h264['profile']    = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 1, 1));
                                                                $h264['level']      = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 3, 1));
                                                                $rn                 = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 4, 1));
                                                                $h264['NALUlength'] = ($rn & 3) + 1;
                                                                $rn                 = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 5, 1));
                                                                $nsps               = ($rn & 31);
                                                                $offset             = 6;
                                                                for ($i = 0; $i < $nsps; $i ++) {
                                                                        $length        = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));
                                                                        $h264['SPS'][] = substr($trackarray['CodecPrivate'], $offset + 2, $length);
                                                                        $offset       += 2 + $length;
                                                                }
                                                                $npps               = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 1));
                                                                $offset            += 1;
                                                                for ($i = 0; $i < $npps; $i ++) {
                                                                        $length        = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));
                                                                        $h264['PPS'][] = substr($trackarray['CodecPrivate'], $offset + 2, $length);
                                                                        $offset       += 2 + $length;
                                                                }
                                                                $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $h264;
                                                                break;*/
                                                }

                                                $info['video']['streams'][] = $track_info;
                                                break;

                                        case 2: // Audio
                                                $track_info['sample_rate'] = (isset($trackarray['SamplingFrequency']) ? $trackarray['SamplingFrequency'] : 8000.0);
                                                $track_info['channels']    = (isset($trackarray['Channels']) ? $trackarray['Channels'] : 1);
                                                $track_info['language']    = (isset($trackarray['Language']) ? $trackarray['Language'] : 'eng');
                                                if (isset($trackarray['BitDepth']))  { $track_info['bits_per_sample'] = $trackarray['BitDepth']; }
                                                if (isset($trackarray['CodecName'])) { $track_info['codec']           = $trackarray['CodecName']; }

                                                switch ($trackarray['CodecID']) {
                                                        case 'A_PCM/INT/LIT':
                                                        case 'A_PCM/INT/BIG':
                                                                $track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
                                                                break;

                                                        case 'A_AC3':
                                                        case 'A_EAC3':
                                                        case 'A_DTS':
                                                        case 'A_MPEG/L3':
                                                        case 'A_MPEG/L2':
                                                        case 'A_FLAC':
                                                                $module_dataformat = ($track_info['dataformat'] == 'mp2' ? 'mp3' : ($track_info['dataformat'] == 'eac3' ? 'ac3' : $track_info['dataformat']));
                                                                getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.'.$module_dataformat.'.php', __FILE__, true);

                                                                if (!isset($info['matroska']['track_data_offsets'][$trackarray['TrackNumber']])) {
                                                                        $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because $info[matroska][track_data_offsets]['.$trackarray['TrackNumber'].'] not set');
                                                                        break;
                                                                }

                                                                // create temp instance
                                                                $getid3_temp = new getID3();
                                                                if ($track_info['dataformat'] != 'flac') {
                                                                        $getid3_temp->openfile($this->getid3->filename);
                                                                }
                                                                $getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
                                                                if ($track_info['dataformat'][0] == 'm' || $track_info['dataformat'] == 'flac') {
                                                                        $getid3_temp->info['avdataend'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'] + $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['length'];
                                                                }

                                                                // analyze
                                                                $class = 'getid3_'.$module_dataformat;
                                                                $header_data_key = $track_info['dataformat'][0] == 'm' ? 'mpeg' : $track_info['dataformat'];
                                                                $getid3_audio = new $class($getid3_temp, __CLASS__);
                                                                if ($track_info['dataformat'] == 'flac') {
                                                                        $getid3_audio->AnalyzeString($trackarray['CodecPrivate']);
                                                                }
                                                                else {
                                                                        $getid3_audio->Analyze();
                                                                }
                                                                if (!empty($getid3_temp->info[$header_data_key])) {
                                                                        $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info[$header_data_key];
                                                                        if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
                                                                                foreach ($getid3_temp->info['audio'] as $key => $value) {
                                                                                        $track_info[$key] = $value;
                                                                                }
                                                                        }
                                                                }
                                                                else {
                                                                        $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because '.$class.'::Analyze() failed at offset '.$getid3_temp->info['avdataoffset']);
                                                                }

                                                                // copy errors and warnings
                                                                if (!empty($getid3_temp->info['error'])) {
                                                                        foreach ($getid3_temp->info['error'] as $newerror) {
                                                                                $this->warning($class.'() says: ['.$newerror.']');
                                                                        }
                                                                }
                                                                if (!empty($getid3_temp->info['warning'])) {
                                                                        foreach ($getid3_temp->info['warning'] as $newerror) {
                                                                                $this->warning($class.'() says: ['.$newerror.']');
                                                                        }
                                                                }
                                                                unset($getid3_temp, $getid3_audio);
                                                                break;

                                                        case 'A_AAC':
                                                        case 'A_AAC/MPEG2/LC':
                                                        case 'A_AAC/MPEG2/LC/SBR':
                                                        case 'A_AAC/MPEG4/LC':
                                                        case 'A_AAC/MPEG4/LC/SBR':
                                                                $this->warning($trackarray['CodecID'].' audio data contains no header, audio/video bitrates can\'t be calculated');
                                                                break;

                                                        case 'A_VORBIS':
                                                                if (!isset($trackarray['CodecPrivate'])) {
                                                                        $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because CodecPrivate data not set');
                                                                        break;
                                                                }
                                                                $vorbis_offset = strpos($trackarray['CodecPrivate'], 'vorbis', 1);
                                                                if ($vorbis_offset === false) {
                                                                        $this->warning('Unable to parse audio data ['.basename(__FILE__).':'.__LINE__.'] because CodecPrivate data does not contain "vorbis" keyword');
                                                                        break;
                                                                }
                                                                $vorbis_offset -= 1;

                                                                getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.ogg.php', __FILE__, true);

                                                                // create temp instance
                                                                $getid3_temp = new getID3();

                                                                // analyze
                                                                $getid3_ogg = new getid3_ogg($getid3_temp);
                                                                $oggpageinfo['page_seqno'] = 0;
                                                                $getid3_ogg->ParseVorbisPageHeader($trackarray['CodecPrivate'], $vorbis_offset, $oggpageinfo);
                                                                if (!empty($getid3_temp->info['ogg'])) {
                                                                        $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['ogg'];
                                                                        if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
                                                                                foreach ($getid3_temp->info['audio'] as $key => $value) {
                                                                                        $track_info[$key] = $value;
                                                                                }
                                                                        }
                                                                }

                                                                // copy errors and warnings
                                                                if (!empty($getid3_temp->info['error'])) {
                                                                        foreach ($getid3_temp->info['error'] as $newerror) {
                                                                                $this->warning('getid3_ogg() says: ['.$newerror.']');
                                                                        }
                                                                }
                                                                if (!empty($getid3_temp->info['warning'])) {
                                                                        foreach ($getid3_temp->info['warning'] as $newerror) {
                                                                                $this->warning('getid3_ogg() says: ['.$newerror.']');
                                                                        }
                                                                }

                                                                if (!empty($getid3_temp->info['ogg']['bitrate_nominal'])) {
                                                                        $track_info['bitrate'] = $getid3_temp->info['ogg']['bitrate_nominal'];
                                                                }
                                                                unset($getid3_temp, $getid3_ogg, $oggpageinfo, $vorbis_offset);
                                                                break;

                                                        case 'A_MS/ACM':
                                                                getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);

                                                                $parsed = getid3_riff::parseWAVEFORMATex($trackarray['CodecPrivate']);
                                                                foreach ($parsed as $key => $value) {
                                                                        if ($key != 'raw') {
                                                                                $track_info[$key] = $value;
                                                                        }
                                                                }
                                                                $info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $parsed;
                                                                break;

                                                        default:
                                                                $this->warning('Unhandled audio type "'.(isset($trackarray['CodecID']) ? $trackarray['CodecID'] : '').'"');
                                                                break;
                                                }

                                                $info['audio']['streams'][] = $track_info;
                                                break;
                                }
                        }

                        if (!empty($info['video']['streams'])) {
                                $info['video'] = self::getDefaultStreamInfo($info['video']['streams']);
                        }
                        if (!empty($info['audio']['streams'])) {
                                $info['audio'] = self::getDefaultStreamInfo($info['audio']['streams']);
                        }
                }

                // process attachments
                if (isset($info['matroska']['attachments']) && $this->getid3->option_save_attachments !== getID3::ATTACHMENTS_NONE) {
                        foreach ($info['matroska']['attachments'] as $i => $entry) {
                                if (strpos($entry['FileMimeType'], 'image/') === 0 && !empty($entry['FileData'])) {
                                        $info['matroska']['comments']['picture'][] = array('data' => $entry['FileData'], 'image_mime' => $entry['FileMimeType'], 'filename' => $entry['FileName']);
                                }
                        }
                }

                // determine mime type
                if (!empty($info['video']['streams'])) {
                        $info['mime_type'] = ($info['matroska']['doctype'] == 'webm' ? 'video/webm' : 'video/x-matroska');
                } elseif (!empty($info['audio']['streams'])) {
                        $info['mime_type'] = ($info['matroska']['doctype'] == 'webm' ? 'audio/webm' : 'audio/x-matroska');
                } elseif (isset($info['mime_type'])) {
                        unset($info['mime_type']);
                }

                return true;
        }

Here is the call graph for this function:

BlockLacingType()

static getid3_matroska::BlockLacingType (   $lacingtype )

static

Definition at line 1512 of file module.audio-video.matroska.php.

                                                            {
                // http://matroska.org/technical/specs/index.html#block_structure
                static $BlockLacingType = array();
                if (empty($BlockLacingType)) {
                        $BlockLacingType[0x00] = 'no lacing';
                        $BlockLacingType[0x01] = 'Xiph lacing';
                        $BlockLacingType[0x02] = 'fixed-size lacing';
                        $BlockLacingType[0x03] = 'EBML lacing';
                }
                return (isset($BlockLacingType[$lacingtype]) ? $BlockLacingType[$lacingtype] : $lacingtype);
        }

CodecIDtoCommonName()

static getid3_matroska::CodecIDtoCommonName (   $codecid )

static

Definition at line 1524 of file module.audio-video.matroska.php.

                                                             {
                // http://www.matroska.org/technical/specs/codecid/index.html
                static $CodecIDlist = array();
                if (empty($CodecIDlist)) {
                        $CodecIDlist['A_AAC']            = 'aac';
                        $CodecIDlist['A_AAC/MPEG2/LC']   = 'aac';
                        $CodecIDlist['A_AC3']            = 'ac3';
                        $CodecIDlist['A_EAC3']           = 'eac3';
                        $CodecIDlist['A_DTS']            = 'dts';
                        $CodecIDlist['A_FLAC']           = 'flac';
                        $CodecIDlist['A_MPEG/L1']        = 'mp1';
                        $CodecIDlist['A_MPEG/L2']        = 'mp2';
                        $CodecIDlist['A_MPEG/L3']        = 'mp3';
                        $CodecIDlist['A_PCM/INT/LIT']    = 'pcm';       // PCM Integer Little Endian
                        $CodecIDlist['A_PCM/INT/BIG']    = 'pcm';       // PCM Integer Big Endian
                        $CodecIDlist['A_QUICKTIME/QDMC'] = 'quicktime'; // Quicktime: QDesign Music
                        $CodecIDlist['A_QUICKTIME/QDM2'] = 'quicktime'; // Quicktime: QDesign Music v2
                        $CodecIDlist['A_VORBIS']         = 'vorbis';
                        $CodecIDlist['V_MPEG1']          = 'mpeg';
                        $CodecIDlist['V_THEORA']         = 'theora';
                        $CodecIDlist['V_REAL/RV40']      = 'real';
                        $CodecIDlist['V_REAL/RV10']      = 'real';
                        $CodecIDlist['V_REAL/RV20']      = 'real';
                        $CodecIDlist['V_REAL/RV30']      = 'real';
                        $CodecIDlist['V_QUICKTIME']      = 'quicktime'; // Quicktime
                        $CodecIDlist['V_MPEG4/ISO/AP']   = 'mpeg4';
                        $CodecIDlist['V_MPEG4/ISO/ASP']  = 'mpeg4';
                        $CodecIDlist['V_MPEG4/ISO/AVC']  = 'h264';
                        $CodecIDlist['V_MPEG4/ISO/SP']   = 'mpeg4';
                        $CodecIDlist['V_VP8']            = 'vp8';
                        $CodecIDlist['V_MS/VFW/FOURCC']  = 'vcm'; // Microsoft (TM) Video Codec Manager (VCM)
                        $CodecIDlist['A_MS/ACM']         = 'acm'; // Microsoft (TM) Audio Codec Manager (ACM)
                }
                return (isset($CodecIDlist[$codecid]) ? $CodecIDlist[$codecid] : $codecid);
        }

displayUnit()

static getid3_matroska::displayUnit (   $value )

static

Definition at line 1758 of file module.audio-video.matroska.php.

                                                   {
                // http://www.matroska.org/technical/specs/index.html#DisplayUnit
                static $units = array(
                        0 => 'pixels',
                        1 => 'centimeters',
                        2 => 'inches',
                        3 => 'Display Aspect Ratio');

                return (isset($units[$value]) ? $units[$value] : 'unknown');
        }

EBML2Int()

static getid3_matroska::EBML2Int (   $EBMLstring )

staticprivate

Definition at line 1449 of file module.audio-video.matroska.php.

References getid3_lib\BigEndian2Int().

                                                      {
                // http://matroska.org/specs/

                // Element ID coded with an UTF-8 like system:
                // 1xxx xxxx                                  - Class A IDs (2^7 -2 possible values) (base 0x8X)
                // 01xx xxxx  xxxx xxxx                       - Class B IDs (2^14-2 possible values) (base 0x4X 0xXX)
                // 001x xxxx  xxxx xxxx  xxxx xxxx            - Class C IDs (2^21-2 possible values) (base 0x2X 0xXX 0xXX)
                // 0001 xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx - Class D IDs (2^28-2 possible values) (base 0x1X 0xXX 0xXX 0xXX)
                // Values with all x at 0 and 1 are reserved (hence the -2).

                // Data size, in octets, is also coded with an UTF-8 like system :
                // 1xxx xxxx                                                                              - value 0 to  2^7-2
                // 01xx xxxx  xxxx xxxx                                                                   - value 0 to 2^14-2
                // 001x xxxx  xxxx xxxx  xxxx xxxx                                                        - value 0 to 2^21-2
                // 0001 xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx                                             - value 0 to 2^28-2
                // 0000 1xxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx                                  - value 0 to 2^35-2
                // 0000 01xx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx                       - value 0 to 2^42-2
                // 0000 001x  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx            - value 0 to 2^49-2
                // 0000 0001  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx  xxxx xxxx - value 0 to 2^56-2

                $first_byte_int = ord($EBMLstring[0]);
                if (0x80 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x7F);
                } elseif (0x40 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x3F);
                } elseif (0x20 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x1F);
                } elseif (0x10 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x0F);
                } elseif (0x08 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x07);
                } elseif (0x04 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x03);
                } elseif (0x02 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x01);
                } elseif (0x01 & $first_byte_int) {
                        $EBMLstring[0] = chr($first_byte_int & 0x00);
                }

                return getid3_lib::BigEndian2Int($EBMLstring);
        }

Here is the call graph for this function:

EBMLdate2unix()

static getid3_matroska::EBMLdate2unix (   $EBMLdatestamp )

staticprivate

Definition at line 1491 of file module.audio-video.matroska.php.

                                                              {
                // Date - signed 8 octets integer in nanoseconds with 0 indicating the precise beginning of the millennium (at 2001-01-01T00:00:00,000000000 UTC)
                // 978307200 == mktime(0, 0, 0, 1, 1, 2001) == January 1, 2001 12:00:00am UTC
                return round(($EBMLdatestamp / 1000000000) + 978307200);
        }

EBMLidName()

static getid3_matroska::EBMLidName (   $value )

staticprivate

Definition at line 1560 of file module.audio-video.matroska.php.

References EBML_ID_ASPECTRATIOTYPE, EBML_ID_ATTACHEDFILE, EBML_ID_ATTACHMENTLINK, EBML_ID_ATTACHMENTS, EBML_ID_AUDIO, EBML_ID_BITDEPTH, EBML_ID_CHANNELPOSITIONS, EBML_ID_CHANNELS, EBML_ID_CHAPCOUNTRY, EBML_ID_CHAPLANGUAGE, EBML_ID_CHAPPROCESS, EBML_ID_CHAPPROCESSCODECID, EBML_ID_CHAPPROCESSCOMMAND, EBML_ID_CHAPPROCESSDATA, EBML_ID_CHAPPROCESSPRIVATE, EBML_ID_CHAPPROCESSTIME, EBML_ID_CHAPSTRING, EBML_ID_CHAPTERATOM, EBML_ID_CHAPTERDISPLAY, EBML_ID_CHAPTERFLAGENABLED, EBML_ID_CHAPTERFLAGHIDDEN, EBML_ID_CHAPTERPHYSICALEQUIV, EBML_ID_CHAPTERS, EBML_ID_CHAPTERSEGMENTEDITIONUID, EBML_ID_CHAPTERSEGMENTUID, EBML_ID_CHAPTERTIMEEND, EBML_ID_CHAPTERTIMESTART, EBML_ID_CHAPTERTRACK, EBML_ID_CHAPTERTRACKNUMBER, EBML_ID_CHAPTERTRANSLATE, EBML_ID_CHAPTERTRANSLATECODEC, EBML_ID_CHAPTERTRANSLATEEDITIONUID, EBML_ID_CHAPTERTRANSLATEID, EBML_ID_CHAPTERUID, EBML_ID_CLUSTER, EBML_ID_CLUSTERBLOCK, EBML_ID_CLUSTERBLOCKADDID, EBML_ID_CLUSTERBLOCKADDITIONAL, EBML_ID_CLUSTERBLOCKADDITIONID, EBML_ID_CLUSTERBLOCKADDITIONS, EBML_ID_CLUSTERBLOCKDURATION, EBML_ID_CLUSTERBLOCKGROUP, EBML_ID_CLUSTERBLOCKMORE, EBML_ID_CLUSTERBLOCKVIRTUAL, EBML_ID_CLUSTERCODECSTATE, EBML_ID_CLUSTERDELAY, EBML_ID_CLUSTERDURATION, EBML_ID_CLUSTERENCRYPTEDBLOCK, EBML_ID_CLUSTERFRAMENUMBER, EBML_ID_CLUSTERLACENUMBER, EBML_ID_CLUSTERPOSITION, EBML_ID_CLUSTERPREVSIZE, EBML_ID_CLUSTERREFERENCEBLOCK, EBML_ID_CLUSTERREFERENCEPRIORITY, EBML_ID_CLUSTERREFERENCEVIRTUAL, EBML_ID_CLUSTERSILENTTRACKNUMBER, EBML_ID_CLUSTERSILENTTRACKS, EBML_ID_CLUSTERSIMPLEBLOCK, EBML_ID_CLUSTERSLICES, EBML_ID_CLUSTERTIMECODE, EBML_ID_CLUSTERTIMESLICE, EBML_ID_CODECDECODEALL, EBML_ID_CODECDOWNLOADURL, EBML_ID_CODECID, EBML_ID_CODECINFOURL, EBML_ID_CODECNAME, EBML_ID_CODECPRIVATE, EBML_ID_CODECSETTINGS, EBML_ID_COLOURSPACE, EBML_ID_CONTENTCOMPALGO, EBML_ID_CONTENTCOMPRESSION, EBML_ID_CONTENTCOMPSETTINGS, EBML_ID_CONTENTENCALGO, EBML_ID_CONTENTENCKEYID, EBML_ID_CONTENTENCODING, EBML_ID_CONTENTENCODINGORDER, EBML_ID_CONTENTENCODINGS, EBML_ID_CONTENTENCODINGSCOPE, EBML_ID_CONTENTENCODINGTYPE, EBML_ID_CONTENTENCRYPTION, EBML_ID_CONTENTSIGALGO, EBML_ID_CONTENTSIGHASHALGO, EBML_ID_CONTENTSIGKEYID, EBML_ID_CONTENTSIGNATURE, EBML_ID_CRC32, EBML_ID_CUEBLOCKNUMBER, EBML_ID_CUECLUSTERPOSITION, EBML_ID_CUECODECSTATE, EBML_ID_CUEPOINT, EBML_ID_CUEREFCLUSTER, EBML_ID_CUEREFCODECSTATE, EBML_ID_CUEREFERENCE, EBML_ID_CUEREFNUMBER, EBML_ID_CUEREFTIME, EBML_ID_CUES, EBML_ID_CUETIME, EBML_ID_CUETRACK, EBML_ID_CUETRACKPOSITIONS, EBML_ID_DATEUTC, EBML_ID_DEFAULTDURATION, EBML_ID_DISPLAYHEIGHT, EBML_ID_DISPLAYUNIT, EBML_ID_DISPLAYWIDTH, EBML_ID_DOCTYPE, EBML_ID_DOCTYPEREADVERSION, EBML_ID_DOCTYPEVERSION, EBML_ID_DURATION, EBML_ID_EBML, EBML_ID_EBMLMAXIDLENGTH, EBML_ID_EBMLMAXSIZELENGTH, EBML_ID_EBMLREADVERSION, EBML_ID_EBMLVERSION, EBML_ID_EDITIONENTRY, EBML_ID_EDITIONFLAGDEFAULT, EBML_ID_EDITIONFLAGHIDDEN, EBML_ID_EDITIONFLAGORDERED, EBML_ID_EDITIONUID, EBML_ID_FILEDATA, EBML_ID_FILEDESCRIPTION, EBML_ID_FILEMIMETYPE, EBML_ID_FILENAME, EBML_ID_FILEREFERRAL, EBML_ID_FILEUID, EBML_ID_FLAGDEFAULT, EBML_ID_FLAGENABLED, EBML_ID_FLAGFORCED, EBML_ID_FLAGINTERLACED, EBML_ID_FLAGLACING, EBML_ID_GAMMAVALUE, EBML_ID_INFO, EBML_ID_LANGUAGE, EBML_ID_MAXBLOCKADDITIONID, EBML_ID_MAXCACHE, EBML_ID_MINCACHE, EBML_ID_MUXINGAPP, EBML_ID_NAME, EBML_ID_NEXTFILENAME, EBML_ID_NEXTUID, EBML_ID_OLDSTEREOMODE, EBML_ID_OUTPUTSAMPLINGFREQUENCY, EBML_ID_PIXELCROPBOTTOM, EBML_ID_PIXELCROPLEFT, EBML_ID_PIXELCROPRIGHT, EBML_ID_PIXELCROPTOP, EBML_ID_PIXELHEIGHT, EBML_ID_PIXELWIDTH, EBML_ID_PREVFILENAME, EBML_ID_PREVUID, EBML_ID_SAMPLINGFREQUENCY, EBML_ID_SEEK, EBML_ID_SEEKHEAD, EBML_ID_SEEKID, EBML_ID_SEEKPOSITION, EBML_ID_SEGMENT, EBML_ID_SEGMENTFAMILY, EBML_ID_SEGMENTFILENAME, EBML_ID_SEGMENTUID, EBML_ID_SIMPLETAG, EBML_ID_STEREOMODE, EBML_ID_TAG, EBML_ID_TAGATTACHMENTUID, EBML_ID_TAGBINARY, EBML_ID_TAGCHAPTERUID, EBML_ID_TAGDEFAULT, EBML_ID_TAGEDITIONUID, EBML_ID_TAGLANGUAGE, EBML_ID_TAGNAME, EBML_ID_TAGS, EBML_ID_TAGSTRING, EBML_ID_TAGTRACKUID, EBML_ID_TARGETS, EBML_ID_TARGETTYPE, EBML_ID_TARGETTYPEVALUE, EBML_ID_TIMECODESCALE, EBML_ID_TITLE, EBML_ID_TRACKENTRY, EBML_ID_TRACKNUMBER, EBML_ID_TRACKOFFSET, EBML_ID_TRACKOVERLAY, EBML_ID_TRACKS, EBML_ID_TRACKTIMECODESCALE, EBML_ID_TRACKTRANSLATE, EBML_ID_TRACKTRANSLATECODEC, EBML_ID_TRACKTRANSLATEEDITIONUID, EBML_ID_TRACKTRANSLATETRACKID, EBML_ID_TRACKTYPE, EBML_ID_TRACKUID, EBML_ID_VIDEO, EBML_ID_VOID, and EBML_ID_WRITINGAPP.

                                                   {
                static $EBMLidList = array();
                if (empty($EBMLidList)) {
                        $EBMLidList[EBML_ID_ASPECTRATIOTYPE]            = 'AspectRatioType';
                        $EBMLidList[EBML_ID_ATTACHEDFILE]               = 'AttachedFile';
                        $EBMLidList[EBML_ID_ATTACHMENTLINK]             = 'AttachmentLink';
                        $EBMLidList[EBML_ID_ATTACHMENTS]                = 'Attachments';
                        $EBMLidList[EBML_ID_AUDIO]                      = 'Audio';
                        $EBMLidList[EBML_ID_BITDEPTH]                   = 'BitDepth';
                        $EBMLidList[EBML_ID_CHANNELPOSITIONS]           = 'ChannelPositions';
                        $EBMLidList[EBML_ID_CHANNELS]                   = 'Channels';
                        $EBMLidList[EBML_ID_CHAPCOUNTRY]                = 'ChapCountry';
                        $EBMLidList[EBML_ID_CHAPLANGUAGE]               = 'ChapLanguage';
                        $EBMLidList[EBML_ID_CHAPPROCESS]                = 'ChapProcess';
                        $EBMLidList[EBML_ID_CHAPPROCESSCODECID]         = 'ChapProcessCodecID';
                        $EBMLidList[EBML_ID_CHAPPROCESSCOMMAND]         = 'ChapProcessCommand';
                        $EBMLidList[EBML_ID_CHAPPROCESSDATA]            = 'ChapProcessData';
                        $EBMLidList[EBML_ID_CHAPPROCESSPRIVATE]         = 'ChapProcessPrivate';
                        $EBMLidList[EBML_ID_CHAPPROCESSTIME]            = 'ChapProcessTime';
                        $EBMLidList[EBML_ID_CHAPSTRING]                 = 'ChapString';
                        $EBMLidList[EBML_ID_CHAPTERATOM]                = 'ChapterAtom';
                        $EBMLidList[EBML_ID_CHAPTERDISPLAY]             = 'ChapterDisplay';
                        $EBMLidList[EBML_ID_CHAPTERFLAGENABLED]         = 'ChapterFlagEnabled';
                        $EBMLidList[EBML_ID_CHAPTERFLAGHIDDEN]          = 'ChapterFlagHidden';
                        $EBMLidList[EBML_ID_CHAPTERPHYSICALEQUIV]       = 'ChapterPhysicalEquiv';
                        $EBMLidList[EBML_ID_CHAPTERS]                   = 'Chapters';
                        $EBMLidList[EBML_ID_CHAPTERSEGMENTEDITIONUID]   = 'ChapterSegmentEditionUID';
                        $EBMLidList[EBML_ID_CHAPTERSEGMENTUID]          = 'ChapterSegmentUID';
                        $EBMLidList[EBML_ID_CHAPTERTIMEEND]             = 'ChapterTimeEnd';
                        $EBMLidList[EBML_ID_CHAPTERTIMESTART]           = 'ChapterTimeStart';
                        $EBMLidList[EBML_ID_CHAPTERTRACK]               = 'ChapterTrack';
                        $EBMLidList[EBML_ID_CHAPTERTRACKNUMBER]         = 'ChapterTrackNumber';
                        $EBMLidList[EBML_ID_CHAPTERTRANSLATE]           = 'ChapterTranslate';
                        $EBMLidList[EBML_ID_CHAPTERTRANSLATECODEC]      = 'ChapterTranslateCodec';
                        $EBMLidList[EBML_ID_CHAPTERTRANSLATEEDITIONUID] = 'ChapterTranslateEditionUID';
                        $EBMLidList[EBML_ID_CHAPTERTRANSLATEID]         = 'ChapterTranslateID';
                        $EBMLidList[EBML_ID_CHAPTERUID]                 = 'ChapterUID';
                        $EBMLidList[EBML_ID_CLUSTER]                    = 'Cluster';
                        $EBMLidList[EBML_ID_CLUSTERBLOCK]               = 'ClusterBlock';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKADDID]          = 'ClusterBlockAddID';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONAL]     = 'ClusterBlockAdditional';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONID]     = 'ClusterBlockAdditionID';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKADDITIONS]      = 'ClusterBlockAdditions';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKDURATION]       = 'ClusterBlockDuration';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKGROUP]          = 'ClusterBlockGroup';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKMORE]           = 'ClusterBlockMore';
                        $EBMLidList[EBML_ID_CLUSTERBLOCKVIRTUAL]        = 'ClusterBlockVirtual';
                        $EBMLidList[EBML_ID_CLUSTERCODECSTATE]          = 'ClusterCodecState';
                        $EBMLidList[EBML_ID_CLUSTERDELAY]               = 'ClusterDelay';
                        $EBMLidList[EBML_ID_CLUSTERDURATION]            = 'ClusterDuration';
                        $EBMLidList[EBML_ID_CLUSTERENCRYPTEDBLOCK]      = 'ClusterEncryptedBlock';
                        $EBMLidList[EBML_ID_CLUSTERFRAMENUMBER]         = 'ClusterFrameNumber';
                        $EBMLidList[EBML_ID_CLUSTERLACENUMBER]          = 'ClusterLaceNumber';
                        $EBMLidList[EBML_ID_CLUSTERPOSITION]            = 'ClusterPosition';
                        $EBMLidList[EBML_ID_CLUSTERPREVSIZE]            = 'ClusterPrevSize';
                        $EBMLidList[EBML_ID_CLUSTERREFERENCEBLOCK]      = 'ClusterReferenceBlock';
                        $EBMLidList[EBML_ID_CLUSTERREFERENCEPRIORITY]   = 'ClusterReferencePriority';
                        $EBMLidList[EBML_ID_CLUSTERREFERENCEVIRTUAL]    = 'ClusterReferenceVirtual';
                        $EBMLidList[EBML_ID_CLUSTERSILENTTRACKNUMBER]   = 'ClusterSilentTrackNumber';
                        $EBMLidList[EBML_ID_CLUSTERSILENTTRACKS]        = 'ClusterSilentTracks';
                        $EBMLidList[EBML_ID_CLUSTERSIMPLEBLOCK]         = 'ClusterSimpleBlock';
                        $EBMLidList[EBML_ID_CLUSTERTIMECODE]            = 'ClusterTimecode';
                        $EBMLidList[EBML_ID_CLUSTERTIMESLICE]           = 'ClusterTimeSlice';
                        $EBMLidList[EBML_ID_CODECDECODEALL]             = 'CodecDecodeAll';
                        $EBMLidList[EBML_ID_CODECDOWNLOADURL]           = 'CodecDownloadURL';
                        $EBMLidList[EBML_ID_CODECID]                    = 'CodecID';
                        $EBMLidList[EBML_ID_CODECINFOURL]               = 'CodecInfoURL';
                        $EBMLidList[EBML_ID_CODECNAME]                  = 'CodecName';
                        $EBMLidList[EBML_ID_CODECPRIVATE]               = 'CodecPrivate';
                        $EBMLidList[EBML_ID_CODECSETTINGS]              = 'CodecSettings';
                        $EBMLidList[EBML_ID_COLOURSPACE]                = 'ColourSpace';
                        $EBMLidList[EBML_ID_CONTENTCOMPALGO]            = 'ContentCompAlgo';
                        $EBMLidList[EBML_ID_CONTENTCOMPRESSION]         = 'ContentCompression';
                        $EBMLidList[EBML_ID_CONTENTCOMPSETTINGS]        = 'ContentCompSettings';
                        $EBMLidList[EBML_ID_CONTENTENCALGO]             = 'ContentEncAlgo';
                        $EBMLidList[EBML_ID_CONTENTENCKEYID]            = 'ContentEncKeyID';
                        $EBMLidList[EBML_ID_CONTENTENCODING]            = 'ContentEncoding';
                        $EBMLidList[EBML_ID_CONTENTENCODINGORDER]       = 'ContentEncodingOrder';
                        $EBMLidList[EBML_ID_CONTENTENCODINGS]           = 'ContentEncodings';
                        $EBMLidList[EBML_ID_CONTENTENCODINGSCOPE]       = 'ContentEncodingScope';
                        $EBMLidList[EBML_ID_CONTENTENCODINGTYPE]        = 'ContentEncodingType';
                        $EBMLidList[EBML_ID_CONTENTENCRYPTION]          = 'ContentEncryption';
                        $EBMLidList[EBML_ID_CONTENTSIGALGO]             = 'ContentSigAlgo';
                        $EBMLidList[EBML_ID_CONTENTSIGHASHALGO]         = 'ContentSigHashAlgo';
                        $EBMLidList[EBML_ID_CONTENTSIGKEYID]            = 'ContentSigKeyID';
                        $EBMLidList[EBML_ID_CONTENTSIGNATURE]           = 'ContentSignature';
                        $EBMLidList[EBML_ID_CRC32]                      = 'CRC32';
                        $EBMLidList[EBML_ID_CUEBLOCKNUMBER]             = 'CueBlockNumber';
                        $EBMLidList[EBML_ID_CUECLUSTERPOSITION]         = 'CueClusterPosition';
                        $EBMLidList[EBML_ID_CUECODECSTATE]              = 'CueCodecState';
                        $EBMLidList[EBML_ID_CUEPOINT]                   = 'CuePoint';
                        $EBMLidList[EBML_ID_CUEREFCLUSTER]              = 'CueRefCluster';
                        $EBMLidList[EBML_ID_CUEREFCODECSTATE]           = 'CueRefCodecState';
                        $EBMLidList[EBML_ID_CUEREFERENCE]               = 'CueReference';
                        $EBMLidList[EBML_ID_CUEREFNUMBER]               = 'CueRefNumber';
                        $EBMLidList[EBML_ID_CUEREFTIME]                 = 'CueRefTime';
                        $EBMLidList[EBML_ID_CUES]                       = 'Cues';
                        $EBMLidList[EBML_ID_CUETIME]                    = 'CueTime';
                        $EBMLidList[EBML_ID_CUETRACK]                   = 'CueTrack';
                        $EBMLidList[EBML_ID_CUETRACKPOSITIONS]          = 'CueTrackPositions';
                        $EBMLidList[EBML_ID_DATEUTC]                    = 'DateUTC';
                        $EBMLidList[EBML_ID_DEFAULTDURATION]            = 'DefaultDuration';
                        $EBMLidList[EBML_ID_DISPLAYHEIGHT]              = 'DisplayHeight';
                        $EBMLidList[EBML_ID_DISPLAYUNIT]                = 'DisplayUnit';
                        $EBMLidList[EBML_ID_DISPLAYWIDTH]               = 'DisplayWidth';
                        $EBMLidList[EBML_ID_DOCTYPE]                    = 'DocType';
                        $EBMLidList[EBML_ID_DOCTYPEREADVERSION]         = 'DocTypeReadVersion';
                        $EBMLidList[EBML_ID_DOCTYPEVERSION]             = 'DocTypeVersion';
                        $EBMLidList[EBML_ID_DURATION]                   = 'Duration';
                        $EBMLidList[EBML_ID_EBML]                       = 'EBML';
                        $EBMLidList[EBML_ID_EBMLMAXIDLENGTH]            = 'EBMLMaxIDLength';
                        $EBMLidList[EBML_ID_EBMLMAXSIZELENGTH]          = 'EBMLMaxSizeLength';
                        $EBMLidList[EBML_ID_EBMLREADVERSION]            = 'EBMLReadVersion';
                        $EBMLidList[EBML_ID_EBMLVERSION]                = 'EBMLVersion';
                        $EBMLidList[EBML_ID_EDITIONENTRY]               = 'EditionEntry';
                        $EBMLidList[EBML_ID_EDITIONFLAGDEFAULT]         = 'EditionFlagDefault';
                        $EBMLidList[EBML_ID_EDITIONFLAGHIDDEN]          = 'EditionFlagHidden';
                        $EBMLidList[EBML_ID_EDITIONFLAGORDERED]         = 'EditionFlagOrdered';
                        $EBMLidList[EBML_ID_EDITIONUID]                 = 'EditionUID';
                        $EBMLidList[EBML_ID_FILEDATA]                   = 'FileData';
                        $EBMLidList[EBML_ID_FILEDESCRIPTION]            = 'FileDescription';
                        $EBMLidList[EBML_ID_FILEMIMETYPE]               = 'FileMimeType';
                        $EBMLidList[EBML_ID_FILENAME]                   = 'FileName';
                        $EBMLidList[EBML_ID_FILEREFERRAL]               = 'FileReferral';
                        $EBMLidList[EBML_ID_FILEUID]                    = 'FileUID';
                        $EBMLidList[EBML_ID_FLAGDEFAULT]                = 'FlagDefault';
                        $EBMLidList[EBML_ID_FLAGENABLED]                = 'FlagEnabled';
                        $EBMLidList[EBML_ID_FLAGFORCED]                 = 'FlagForced';
                        $EBMLidList[EBML_ID_FLAGINTERLACED]             = 'FlagInterlaced';
                        $EBMLidList[EBML_ID_FLAGLACING]                 = 'FlagLacing';
                        $EBMLidList[EBML_ID_GAMMAVALUE]                 = 'GammaValue';
                        $EBMLidList[EBML_ID_INFO]                       = 'Info';
                        $EBMLidList[EBML_ID_LANGUAGE]                   = 'Language';
                        $EBMLidList[EBML_ID_MAXBLOCKADDITIONID]         = 'MaxBlockAdditionID';
                        $EBMLidList[EBML_ID_MAXCACHE]                   = 'MaxCache';
                        $EBMLidList[EBML_ID_MINCACHE]                   = 'MinCache';
                        $EBMLidList[EBML_ID_MUXINGAPP]                  = 'MuxingApp';
                        $EBMLidList[EBML_ID_NAME]                       = 'Name';
                        $EBMLidList[EBML_ID_NEXTFILENAME]               = 'NextFilename';
                        $EBMLidList[EBML_ID_NEXTUID]                    = 'NextUID';
                        $EBMLidList[EBML_ID_OUTPUTSAMPLINGFREQUENCY]    = 'OutputSamplingFrequency';
                        $EBMLidList[EBML_ID_PIXELCROPBOTTOM]            = 'PixelCropBottom';
                        $EBMLidList[EBML_ID_PIXELCROPLEFT]              = 'PixelCropLeft';
                        $EBMLidList[EBML_ID_PIXELCROPRIGHT]             = 'PixelCropRight';
                        $EBMLidList[EBML_ID_PIXELCROPTOP]               = 'PixelCropTop';
                        $EBMLidList[EBML_ID_PIXELHEIGHT]                = 'PixelHeight';
                        $EBMLidList[EBML_ID_PIXELWIDTH]                 = 'PixelWidth';
                        $EBMLidList[EBML_ID_PREVFILENAME]               = 'PrevFilename';
                        $EBMLidList[EBML_ID_PREVUID]                    = 'PrevUID';
                        $EBMLidList[EBML_ID_SAMPLINGFREQUENCY]          = 'SamplingFrequency';
                        $EBMLidList[EBML_ID_SEEK]                       = 'Seek';
                        $EBMLidList[EBML_ID_SEEKHEAD]                   = 'SeekHead';
                        $EBMLidList[EBML_ID_SEEKID]                     = 'SeekID';
                        $EBMLidList[EBML_ID_SEEKPOSITION]               = 'SeekPosition';
                        $EBMLidList[EBML_ID_SEGMENT]                    = 'Segment';
                        $EBMLidList[EBML_ID_SEGMENTFAMILY]              = 'SegmentFamily';
                        $EBMLidList[EBML_ID_SEGMENTFILENAME]            = 'SegmentFilename';
                        $EBMLidList[EBML_ID_SEGMENTUID]                 = 'SegmentUID';
                        $EBMLidList[EBML_ID_SIMPLETAG]                  = 'SimpleTag';
                        $EBMLidList[EBML_ID_CLUSTERSLICES]              = 'ClusterSlices';
                        $EBMLidList[EBML_ID_STEREOMODE]                 = 'StereoMode';
                        $EBMLidList[EBML_ID_OLDSTEREOMODE]              = 'OldStereoMode';
                        $EBMLidList[EBML_ID_TAG]                        = 'Tag';
                        $EBMLidList[EBML_ID_TAGATTACHMENTUID]           = 'TagAttachmentUID';
                        $EBMLidList[EBML_ID_TAGBINARY]                  = 'TagBinary';
                        $EBMLidList[EBML_ID_TAGCHAPTERUID]              = 'TagChapterUID';
                        $EBMLidList[EBML_ID_TAGDEFAULT]                 = 'TagDefault';
                        $EBMLidList[EBML_ID_TAGEDITIONUID]              = 'TagEditionUID';
                        $EBMLidList[EBML_ID_TAGLANGUAGE]                = 'TagLanguage';
                        $EBMLidList[EBML_ID_TAGNAME]                    = 'TagName';
                        $EBMLidList[EBML_ID_TAGTRACKUID]                = 'TagTrackUID';
                        $EBMLidList[EBML_ID_TAGS]                       = 'Tags';
                        $EBMLidList[EBML_ID_TAGSTRING]                  = 'TagString';
                        $EBMLidList[EBML_ID_TARGETS]                    = 'Targets';
                        $EBMLidList[EBML_ID_TARGETTYPE]                 = 'TargetType';
                        $EBMLidList[EBML_ID_TARGETTYPEVALUE]            = 'TargetTypeValue';
                        $EBMLidList[EBML_ID_TIMECODESCALE]              = 'TimecodeScale';
                        $EBMLidList[EBML_ID_TITLE]                      = 'Title';
                        $EBMLidList[EBML_ID_TRACKENTRY]                 = 'TrackEntry';
                        $EBMLidList[EBML_ID_TRACKNUMBER]                = 'TrackNumber';
                        $EBMLidList[EBML_ID_TRACKOFFSET]                = 'TrackOffset';
                        $EBMLidList[EBML_ID_TRACKOVERLAY]               = 'TrackOverlay';
                        $EBMLidList[EBML_ID_TRACKS]                     = 'Tracks';
                        $EBMLidList[EBML_ID_TRACKTIMECODESCALE]         = 'TrackTimecodeScale';
                        $EBMLidList[EBML_ID_TRACKTRANSLATE]             = 'TrackTranslate';
                        $EBMLidList[EBML_ID_TRACKTRANSLATECODEC]        = 'TrackTranslateCodec';
                        $EBMLidList[EBML_ID_TRACKTRANSLATEEDITIONUID]   = 'TrackTranslateEditionUID';
                        $EBMLidList[EBML_ID_TRACKTRANSLATETRACKID]      = 'TrackTranslateTrackID';
                        $EBMLidList[EBML_ID_TRACKTYPE]                  = 'TrackType';
                        $EBMLidList[EBML_ID_TRACKUID]                   = 'TrackUID';
                        $EBMLidList[EBML_ID_VIDEO]                      = 'Video';
                        $EBMLidList[EBML_ID_VOID]                       = 'Void';
                        $EBMLidList[EBML_ID_WRITINGAPP]                 = 'WritingApp';
                }

                return (isset($EBMLidList[$value]) ? $EBMLidList[$value] : dechex($value));
        }

EnsureBufferHasEnoughData()

getid3_matroska::EnsureBufferHasEnoughData (   $min_data = 1024 )

private

Definition at line 1231 of file module.audio-video.matroska.php.

References $current_offset, getid3_handler\error(), getid3_handler\feof(), getid3_handler\fread(), getid3_handler\fseek(), and getid3_handler\warning().

Referenced by getEBMLelement(), and readEBMLelementData().

                                                                   {
                if (($this->current_offset - $this->EBMLbuffer_offset) >= ($this->EBMLbuffer_length - $min_data)) {
                        $read_bytes = max($min_data, $this->getid3->fread_buffer_size());

                        try {
                                $this->fseek($this->current_offset);
                                $this->EBMLbuffer_offset = $this->current_offset;
                                $this->EBMLbuffer        = $this->fread($read_bytes);
                                $this->EBMLbuffer_length = strlen($this->EBMLbuffer);
                        } catch (getid3_exception $e) {
                                $this->warning('EBML parser: '.$e->getMessage());
                                return false;
                        }

                        if ($this->EBMLbuffer_length == 0 && $this->feof()) {
                                return $this->error('EBML parser: ran out of file at offset '.$this->current_offset);
                        }
                }
                return true;
        }

Here is the call graph for this function:

Here is the caller graph for this function:

ExtractCommentsSimpleTag()

getid3_matroska::ExtractCommentsSimpleTag (   $SimpleTagArray )

private

Definition at line 1341 of file module.audio-video.matroska.php.

Referenced by Analyze().

                                                                   {
                if (!empty($SimpleTagArray['SimpleTag'])) {
                        foreach ($SimpleTagArray['SimpleTag'] as $SimpleTagKey => $SimpleTagData) {
                                if (!empty($SimpleTagData['TagName']) && !empty($SimpleTagData['TagString'])) {
                                        $this->getid3->info['matroska']['comments'][strtolower($SimpleTagData['TagName'])][] = $SimpleTagData['TagString'];
                                }
                                if (!empty($SimpleTagData['SimpleTag'])) {
                                        $this->ExtractCommentsSimpleTag($SimpleTagData);
                                }
                        }
                }

                return true;
        }

Here is the caller graph for this function:

getDefaultStreamInfo()

static getid3_matroska::getDefaultStreamInfo (   $streams )

staticprivate

Definition at line 1769 of file module.audio-video.matroska.php.

References $info, and GuzzleHttp\Psr7\$stream.

        {
                foreach (array_reverse($streams) as $stream) {
                        if ($stream['default']) {
                                break;
                        }
                }

                $unset = array('default', 'name');
                foreach ($unset as $u) {
                        if (isset($stream[$u])) {
                                unset($stream[$u]);
                        }
                }

                $info = $stream;
                $info['streams'] = $streams;

                return $info;
        }

getEBMLelement()

getid3_matroska::getEBMLelement ( &  $element,   $parent_end,   $get_data = false  )

private

Definition at line 1293 of file module.audio-video.matroska.php.

References $current_offset, EnsureBufferHasEnoughData(), readEBMLelementData(), and readEBMLint().

Referenced by HandleEMBLSimpleTag(), and parseEBML().

                                                                                 {
                if ($this->current_offset >= $parent_end) {
                        return false;
                }

                if (!$this->EnsureBufferHasEnoughData()) {
                        $this->current_offset = PHP_INT_MAX; // do not exit parser right now, allow to finish current loop to gather maximum information
                        return false;
                }

                $element = array();

                // set offset
                $element['offset'] = $this->current_offset;

                // get ID
                $element['id'] = $this->readEBMLint();

                // get name
                $element['id_name'] = self::EBMLidName($element['id']);

                // get length
                $element['length'] = $this->readEBMLint();

                // get end offset
                $element['end'] = $this->current_offset + $element['length'];

                // get raw data
                $dont_parse = (in_array($element['id'], $this->unuseful_elements) || $element['id_name'] == dechex($element['id']));
                if (($get_data === true || (is_array($get_data) && !in_array($element['id'], $get_data))) && !$dont_parse) {
                        $element['data'] = $this->readEBMLelementData($element['length'], $element);
                }

                return true;
        }

Here is the call graph for this function:

Here is the caller graph for this function:

HandleEMBLClusterBlock()

getid3_matroska::HandleEMBLClusterBlock (   $element,   $block_type, &  $info  )

private

Definition at line 1386 of file module.audio-video.matroska.php.

References $current_offset, $i, $info, $size, getid3_lib\BigEndian2Int(), EBML_ID_CLUSTERSIMPLEBLOCK, readEBMLelementData(), and readEBMLint().

Referenced by parseEBML().

                                                                               {
                // http://www.matroska.org/technical/specs/index.html#block_structure
                // http://www.matroska.org/technical/specs/index.html#simpleblock_structure

                $block_data = array();
                $block_data['tracknumber'] = $this->readEBMLint();
                $block_data['timecode']    = getid3_lib::BigEndian2Int($this->readEBMLelementData(2), false, true);
                $block_data['flags_raw']   = getid3_lib::BigEndian2Int($this->readEBMLelementData(1));

                if ($block_type == EBML_ID_CLUSTERSIMPLEBLOCK) {
                        $block_data['flags']['keyframe']  = (($block_data['flags_raw'] & 0x80) >> 7);
                        //$block_data['flags']['reserved1'] = (($block_data['flags_raw'] & 0x70) >> 4);
                }
                else {
                        //$block_data['flags']['reserved1'] = (($block_data['flags_raw'] & 0xF0) >> 4);
                }
                $block_data['flags']['invisible'] = (bool)(($block_data['flags_raw'] & 0x08) >> 3);
                $block_data['flags']['lacing']    =       (($block_data['flags_raw'] & 0x06) >> 1);  // 00=no lacing; 01=Xiph lacing; 11=EBML lacing; 10=fixed-size lacing
                if ($block_type == EBML_ID_CLUSTERSIMPLEBLOCK) {
                        $block_data['flags']['discardable'] = (($block_data['flags_raw'] & 0x01));
                }
                else {
                        //$block_data['flags']['reserved2'] = (($block_data['flags_raw'] & 0x01) >> 0);
                }
                $block_data['flags']['lacing_type'] = self::BlockLacingType($block_data['flags']['lacing']);

                // Lace (when lacing bit is set)
                if ($block_data['flags']['lacing'] > 0) {
                        $block_data['lace_frames'] = getid3_lib::BigEndian2Int($this->readEBMLelementData(1)) + 1; // Number of frames in the lace-1 (uint8)
                        if ($block_data['flags']['lacing'] != 0x02) {
                                for ($i = 1; $i < $block_data['lace_frames']; $i ++) { // Lace-coded size of each frame of the lace, except for the last one (multiple uint8). *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
                                        if ($block_data['flags']['lacing'] == 0x03) { // EBML lacing
                                                $block_data['lace_frames_size'][$i] = $this->readEBMLint(); // TODO: read size correctly, calc size for the last frame. For now offsets are deteminded OK with readEBMLint() and that's the most important thing.
                                        }
                                        else { // Xiph lacing
                                                $block_data['lace_frames_size'][$i] = 0;
                                                do {
                                                        $size = getid3_lib::BigEndian2Int($this->readEBMLelementData(1));
                                                        $block_data['lace_frames_size'][$i] += $size;
                                                }
                                                while ($size == 255);
                                        }
                                }
                                if ($block_data['flags']['lacing'] == 0x01) { // calc size of the last frame only for Xiph lacing, till EBML sizes are now anyway determined incorrectly
                                        $block_data['lace_frames_size'][] = $element['end'] - $this->current_offset - array_sum($block_data['lace_frames_size']);
                                }
                        }
                }

                if (!isset($info['matroska']['track_data_offsets'][$block_data['tracknumber']])) {
                        $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['offset'] = $this->current_offset;
                        $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['length'] = $element['end'] - $this->current_offset;
                        //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['total_length'] = 0;
                }
                //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['total_length'] += $info['matroska']['track_data_offsets'][$block_data['tracknumber']]['length'];
                //$info['matroska']['track_data_offsets'][$block_data['tracknumber']]['duration']      = $block_data['timecode'] * ((isset($info['matroska']['info'][0]['TimecodeScale']) ? $info['matroska']['info'][0]['TimecodeScale'] : 1000000) / 1000000000);

                // set offset manually
                $this->current_offset = $element['end'];

                return $block_data;
        }

Here is the call graph for this function:

Here is the caller graph for this function:

HandleEMBLSimpleTag()

getid3_matroska::HandleEMBLSimpleTag (   $parent_end )

private

Definition at line 1356 of file module.audio-video.matroska.php.

References getid3_lib\BigEndian2Int(), EBML_ID_SIMPLETAG, EBML_ID_TAGBINARY, EBML_ID_TAGDEFAULT, EBML_ID_TAGLANGUAGE, EBML_ID_TAGNAME, EBML_ID_TAGSTRING, getEBMLelement(), and unhandledElement().

Referenced by parseEBML().

                                                          {
                $simpletag_entry = array();

                while ($this->getEBMLelement($element, $parent_end, array(EBML_ID_SIMPLETAG))) {
                        switch ($element['id']) {

                                case EBML_ID_TAGNAME:
                                case EBML_ID_TAGLANGUAGE:
                                case EBML_ID_TAGSTRING:
                                case EBML_ID_TAGBINARY:
                                        $simpletag_entry[$element['id_name']] = $element['data'];
                                        break;

                                case EBML_ID_SIMPLETAG:
                                        $simpletag_entry[$element['id_name']][] = $this->HandleEMBLSimpleTag($element['end']);
                                        break;

                                case EBML_ID_TAGDEFAULT:
                                        $simpletag_entry[$element['id_name']] = (bool)getid3_lib::BigEndian2Int($element['data']);
                                        break;

                                default:
                                        $this->unhandledElement('tag.simpletag', __LINE__, $element);
                                        break;
                        }
                }

                return $simpletag_entry;
        }

Here is the call graph for this function:

Here is the caller graph for this function:

parseEBML()

getid3_matroska::parseEBML ( &  $info )

private

Definition at line 499 of file module.audio-video.matroska.php.

References $current_offset, $info, getid3_lib\BigEndian2Float(), getid3_lib\BigEndian2Int(), EBML_ID_ASPECTRATIOTYPE, EBML_ID_ATTACHEDFILE, EBML_ID_ATTACHMENTS, EBML_ID_AUDIO, EBML_ID_BITDEPTH, EBML_ID_CHANNELPOSITIONS, EBML_ID_CHANNELS, EBML_ID_CHAPCOUNTRY, EBML_ID_CHAPLANGUAGE, EBML_ID_CHAPSTRING, EBML_ID_CHAPTERATOM, EBML_ID_CHAPTERDISPLAY, EBML_ID_CHAPTERFLAGENABLED, EBML_ID_CHAPTERFLAGHIDDEN, EBML_ID_CHAPTERS, EBML_ID_CHAPTERSEGMENTEDITIONUID, EBML_ID_CHAPTERSEGMENTUID, EBML_ID_CHAPTERTIMEEND, EBML_ID_CHAPTERTIMESTART, EBML_ID_CHAPTERTRACK, EBML_ID_CHAPTERTRACKNUMBER, EBML_ID_CHAPTERTRANSLATE, EBML_ID_CHAPTERTRANSLATECODEC, EBML_ID_CHAPTERTRANSLATEEDITIONUID, EBML_ID_CHAPTERTRANSLATEID, EBML_ID_CHAPTERUID, EBML_ID_CLUSTER, EBML_ID_CLUSTERBLOCK, EBML_ID_CLUSTERBLOCKDURATION, EBML_ID_CLUSTERBLOCKGROUP, EBML_ID_CLUSTERCODECSTATE, EBML_ID_CLUSTERPOSITION, EBML_ID_CLUSTERPREVSIZE, EBML_ID_CLUSTERREFERENCEBLOCK, EBML_ID_CLUSTERREFERENCEPRIORITY, EBML_ID_CLUSTERSILENTTRACKNUMBER, EBML_ID_CLUSTERSILENTTRACKS, EBML_ID_CLUSTERSIMPLEBLOCK, EBML_ID_CLUSTERTIMECODE, EBML_ID_CODECDECODEALL, EBML_ID_CODECID, EBML_ID_CODECNAME, EBML_ID_CODECPRIVATE, EBML_ID_COLOURSPACE, EBML_ID_CONTENTCOMPALGO, EBML_ID_CONTENTCOMPRESSION, EBML_ID_CONTENTCOMPSETTINGS, EBML_ID_CONTENTENCALGO, EBML_ID_CONTENTENCKEYID, EBML_ID_CONTENTENCODING, EBML_ID_CONTENTENCODINGORDER, EBML_ID_CONTENTENCODINGS, EBML_ID_CONTENTENCODINGSCOPE, EBML_ID_CONTENTENCODINGTYPE, EBML_ID_CONTENTENCRYPTION, EBML_ID_CONTENTSIGALGO, EBML_ID_CONTENTSIGHASHALGO, EBML_ID_CONTENTSIGKEYID, EBML_ID_CONTENTSIGNATURE, EBML_ID_CUEBLOCKNUMBER, EBML_ID_CUECLUSTERPOSITION, EBML_ID_CUECODECSTATE, EBML_ID_CUEPOINT, EBML_ID_CUES, EBML_ID_CUETIME, EBML_ID_CUETRACK, EBML_ID_CUETRACKPOSITIONS, EBML_ID_DATEUTC, EBML_ID_DEFAULTDURATION, EBML_ID_DISPLAYHEIGHT, EBML_ID_DISPLAYUNIT, EBML_ID_DISPLAYWIDTH, EBML_ID_DOCTYPE, EBML_ID_DOCTYPEREADVERSION, EBML_ID_DOCTYPEVERSION, EBML_ID_DURATION, EBML_ID_EBML, EBML_ID_EBMLMAXIDLENGTH, EBML_ID_EBMLMAXSIZELENGTH, EBML_ID_EBMLREADVERSION, EBML_ID_EBMLVERSION, EBML_ID_EDITIONENTRY, EBML_ID_EDITIONFLAGDEFAULT, EBML_ID_EDITIONFLAGHIDDEN, EBML_ID_EDITIONFLAGORDERED, EBML_ID_EDITIONUID, EBML_ID_FILEDATA, EBML_ID_FILEDESCRIPTION, EBML_ID_FILEMIMETYPE, EBML_ID_FILENAME, EBML_ID_FILEUID, EBML_ID_FLAGDEFAULT, EBML_ID_FLAGENABLED, EBML_ID_FLAGFORCED, EBML_ID_FLAGINTERLACED, EBML_ID_FLAGLACING, EBML_ID_GAMMAVALUE, EBML_ID_INFO, EBML_ID_LANGUAGE, EBML_ID_MAXBLOCKADDITIONID, EBML_ID_MAXCACHE, EBML_ID_MINCACHE, EBML_ID_MUXINGAPP, EBML_ID_NAME, EBML_ID_NEXTFILENAME, EBML_ID_NEXTUID, EBML_ID_OLDSTEREOMODE, EBML_ID_OUTPUTSAMPLINGFREQUENCY, EBML_ID_PIXELCROPBOTTOM, EBML_ID_PIXELCROPLEFT, EBML_ID_PIXELCROPRIGHT, EBML_ID_PIXELCROPTOP, EBML_ID_PIXELHEIGHT, EBML_ID_PIXELWIDTH, EBML_ID_PREVFILENAME, EBML_ID_PREVUID, EBML_ID_SAMPLINGFREQUENCY, EBML_ID_SEEK, EBML_ID_SEEKHEAD, EBML_ID_SEEKID, EBML_ID_SEEKPOSITION, EBML_ID_SEGMENT, EBML_ID_SEGMENTFAMILY, EBML_ID_SEGMENTFILENAME, EBML_ID_SEGMENTUID, EBML_ID_SIMPLETAG, EBML_ID_STEREOMODE, EBML_ID_TAG, EBML_ID_TAGATTACHMENTUID, EBML_ID_TAGCHAPTERUID, EBML_ID_TAGEDITIONUID, EBML_ID_TAGS, EBML_ID_TAGTRACKUID, EBML_ID_TARGETS, EBML_ID_TARGETTYPE, EBML_ID_TARGETTYPEVALUE, EBML_ID_TIMECODESCALE, EBML_ID_TITLE, EBML_ID_TRACKENTRY, EBML_ID_TRACKNUMBER, EBML_ID_TRACKS, EBML_ID_TRACKTIMECODESCALE, EBML_ID_TRACKTYPE, EBML_ID_TRACKUID, EBML_ID_VIDEO, EBML_ID_WRITINGAPP, getEBMLelement(), HandleEMBLClusterBlock(), HandleEMBLSimpleTag(), readEBMLelementData(), getid3_handler\saveAttachment(), getid3_lib\trimNullByte(), unhandledElement(), and getid3_handler\warning().

Referenced by Analyze().

                                           {
                // http://www.matroska.org/technical/specs/index.html#EBMLBasics
                $this->current_offset = $info['avdataoffset'];

                while ($this->getEBMLelement($top_element, $info['avdataend'])) {
                        switch ($top_element['id']) {

                                case EBML_ID_EBML:
                                        $info['matroska']['header']['offset'] = $top_element['offset'];
                                        $info['matroska']['header']['length'] = $top_element['length'];

                                        while ($this->getEBMLelement($element_data, $top_element['end'], true)) {
                                                switch ($element_data['id']) {

                                                        case EBML_ID_EBMLVERSION:
                                                        case EBML_ID_EBMLREADVERSION:
                                                        case EBML_ID_EBMLMAXIDLENGTH:
                                                        case EBML_ID_EBMLMAXSIZELENGTH:
                                                        case EBML_ID_DOCTYPEVERSION:
                                                        case EBML_ID_DOCTYPEREADVERSION:
                                                                $element_data['data'] = getid3_lib::BigEndian2Int($element_data['data']);
                                                                break;

                                                        case EBML_ID_DOCTYPE:
                                                                $element_data['data'] = getid3_lib::trimNullByte($element_data['data']);
                                                                $info['matroska']['doctype'] = $element_data['data'];
                                                                $info['fileformat'] = $element_data['data'];
                                                                break;

                                                        default:
                                                                $this->unhandledElement('header', __LINE__, $element_data);
                                                                break;
                                                }

                                                unset($element_data['offset'], $element_data['end']);
                                                $info['matroska']['header']['elements'][] = $element_data;
                                        }
                                        break;

                                case EBML_ID_SEGMENT:
                                        $info['matroska']['segment'][0]['offset'] = $top_element['offset'];
                                        $info['matroska']['segment'][0]['length'] = $top_element['length'];

                                        while ($this->getEBMLelement($element_data, $top_element['end'])) {
                                                if ($element_data['id'] != EBML_ID_CLUSTER || !self::$hide_clusters) { // collect clusters only if required
                                                        $info['matroska']['segments'][] = $element_data;
                                                }
                                                switch ($element_data['id']) {

                                                        case EBML_ID_SEEKHEAD: // Contains the position of other level 1 elements.

                                                                while ($this->getEBMLelement($seek_entry, $element_data['end'])) {
                                                                        switch ($seek_entry['id']) {

                                                                                case EBML_ID_SEEK: // Contains a single seek entry to an EBML element
                                                                                        while ($this->getEBMLelement($sub_seek_entry, $seek_entry['end'], true)) {

                                                                                                switch ($sub_seek_entry['id']) {

                                                                                                        case EBML_ID_SEEKID:
                                                                                                                $seek_entry['target_id']   = self::EBML2Int($sub_seek_entry['data']);
                                                                                                                $seek_entry['target_name'] = self::EBMLidName($seek_entry['target_id']);
                                                                                                                break;

                                                                                                        case EBML_ID_SEEKPOSITION:
                                                                                                                $seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($sub_seek_entry['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('seekhead.seek', __LINE__, $sub_seek_entry);                                                                                            }
                                                                                                                break;
                                                                                        }
                                                                                        if (!isset($seek_entry['target_id'])) {
                                                                                                $this->warning('seek_entry[target_id] unexpectedly not set at '.$seek_entry['offset']);
                                                                                                break;
                                                                                        }
                                                                                        if (($seek_entry['target_id'] != EBML_ID_CLUSTER) || !self::$hide_clusters) { // collect clusters only if required
                                                                                                $info['matroska']['seek'][] = $seek_entry;
                                                                                        }
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('seekhead', __LINE__, $seek_entry);
                                                                                        break;
                                                                        }
                                                                }
                                                                break;

                                                        case EBML_ID_TRACKS: // A top-level block of information with many tracks described.
                                                                $info['matroska']['tracks'] = $element_data;

                                                                while ($this->getEBMLelement($track_entry, $element_data['end'])) {
                                                                        switch ($track_entry['id']) {

                                                                                case EBML_ID_TRACKENTRY: //subelements: Describes a track with all elements.

                                                                                        while ($this->getEBMLelement($subelement, $track_entry['end'], array(EBML_ID_VIDEO, EBML_ID_AUDIO, EBML_ID_CONTENTENCODINGS, EBML_ID_CODECPRIVATE))) {
                                                                                                switch ($subelement['id']) {

                                                                                                        case EBML_ID_TRACKNUMBER:
                                                                                                        case EBML_ID_TRACKUID:
                                                                                                        case EBML_ID_TRACKTYPE:
                                                                                                        case EBML_ID_MINCACHE:
                                                                                                        case EBML_ID_MAXCACHE:
                                                                                                        case EBML_ID_MAXBLOCKADDITIONID:
                                                                                                        case EBML_ID_DEFAULTDURATION: // nanoseconds per frame
                                                                                                                $track_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_TRACKTIMECODESCALE:
                                                                                                                $track_entry[$subelement['id_name']] = getid3_lib::BigEndian2Float($subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CODECID:
                                                                                                        case EBML_ID_LANGUAGE:
                                                                                                        case EBML_ID_NAME:
                                                                                                        case EBML_ID_CODECNAME:
                                                                                                                $track_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CODECPRIVATE:
                                                                                                                $track_entry[$subelement['id_name']] = $this->readEBMLelementData($subelement['length'], true);
                                                                                                                break;

                                                                                                        case EBML_ID_FLAGENABLED:
                                                                                                        case EBML_ID_FLAGDEFAULT:
                                                                                                        case EBML_ID_FLAGFORCED:
                                                                                                        case EBML_ID_FLAGLACING:
                                                                                                        case EBML_ID_CODECDECODEALL:
                                                                                                                $track_entry[$subelement['id_name']] = (bool) getid3_lib::BigEndian2Int($subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_VIDEO:

                                                                                                                while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
                                                                                                                        switch ($sub_subelement['id']) {

                                                                                                                                case EBML_ID_PIXELWIDTH:
                                                                                                                                case EBML_ID_PIXELHEIGHT:
                                                                                                                                case EBML_ID_PIXELCROPBOTTOM:
                                                                                                                                case EBML_ID_PIXELCROPTOP:
                                                                                                                                case EBML_ID_PIXELCROPLEFT:
                                                                                                                                case EBML_ID_PIXELCROPRIGHT:
                                                                                                                                case EBML_ID_DISPLAYWIDTH:
                                                                                                                                case EBML_ID_DISPLAYHEIGHT:
                                                                                                                                case EBML_ID_DISPLAYUNIT:
                                                                                                                                case EBML_ID_ASPECTRATIOTYPE:
                                                                                                                                case EBML_ID_STEREOMODE:
                                                                                                                                case EBML_ID_OLDSTEREOMODE:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_FLAGINTERLACED:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_GAMMAVALUE:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Float($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_COLOURSPACE:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('track.video', __LINE__, $sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                break;

                                                                                                        case EBML_ID_AUDIO:

                                                                                                                while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
                                                                                                                        switch ($sub_subelement['id']) {

                                                                                                                                case EBML_ID_CHANNELS:
                                                                                                                                case EBML_ID_BITDEPTH:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_SAMPLINGFREQUENCY:
                                                                                                                                case EBML_ID_OUTPUTSAMPLINGFREQUENCY:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Float($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_CHANNELPOSITIONS:
                                                                                                                                        $track_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('track.audio', __LINE__, $sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                break;

                                                                                                        case EBML_ID_CONTENTENCODINGS:

                                                                                                                while ($this->getEBMLelement($sub_subelement, $subelement['end'])) {
                                                                                                                        switch ($sub_subelement['id']) {

                                                                                                                                case EBML_ID_CONTENTENCODING:

                                                                                                                                        while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], array(EBML_ID_CONTENTCOMPRESSION, EBML_ID_CONTENTENCRYPTION))) {
                                                                                                                                                switch ($sub_sub_subelement['id']) {

                                                                                                                                                        case EBML_ID_CONTENTENCODINGORDER:
                                                                                                                                                        case EBML_ID_CONTENTENCODINGSCOPE:
                                                                                                                                                        case EBML_ID_CONTENTENCODINGTYPE:
                                                                                                                                                                $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                                                break;

                                                                                                                                                        case EBML_ID_CONTENTCOMPRESSION:

                                                                                                                                                                while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
                                                                                                                                                                        switch ($sub_sub_sub_subelement['id']) {

                                                                                                                                                                                case EBML_ID_CONTENTCOMPALGO:
                                                                                                                                                                                        $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
                                                                                                                                                                                        break;

                                                                                                                                                                                case EBML_ID_CONTENTCOMPSETTINGS:
                                                                                                                                                                                        $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
                                                                                                                                                                                        break;

                                                                                                                                                                                default:
                                                                                                                                                                                        $this->unhandledElement('track.contentencodings.contentencoding.contentcompression', __LINE__, $sub_sub_sub_subelement);
                                                                                                                                                                                        break;
                                                                                                                                                                        }
                                                                                                                                                                }
                                                                                                                                                                break;

                                                                                                                                                        case EBML_ID_CONTENTENCRYPTION:

                                                                                                                                                                while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
                                                                                                                                                                        switch ($sub_sub_sub_subelement['id']) {

                                                                                                                                                                                case EBML_ID_CONTENTENCALGO:
                                                                                                                                                                                case EBML_ID_CONTENTSIGALGO:
                                                                                                                                                                                case EBML_ID_CONTENTSIGHASHALGO:
                                                                                                                                                                                        $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
                                                                                                                                                                                        break;

                                                                                                                                                                                case EBML_ID_CONTENTENCKEYID:
                                                                                                                                                                                case EBML_ID_CONTENTSIGNATURE:
                                                                                                                                                                                case EBML_ID_CONTENTSIGKEYID:
                                                                                                                                                                                        $track_entry[$sub_subelement['id_name']][$sub_sub_subelement['id_name']][$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
                                                                                                                                                                                        break;

                                                                                                                                                                                default:
                                                                                                                                                                                        $this->unhandledElement('track.contentencodings.contentencoding.contentcompression', __LINE__, $sub_sub_sub_subelement);
                                                                                                                                                                                        break;
                                                                                                                                                                        }
                                                                                                                                                                }
                                                                                                                                                                break;

                                                                                                                                                        default:
                                                                                                                                                                $this->unhandledElement('track.contentencodings.contentencoding', __LINE__, $sub_sub_subelement);
                                                                                                                                                                break;
                                                                                                                                                }
                                                                                                                                        }
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('track.contentencodings', __LINE__, $sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('track', __LINE__, $subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }

                                                                                        $info['matroska']['tracks']['tracks'][] = $track_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('tracks', __LINE__, $track_entry);
                                                                                        break;
                                                                        }
                                                                }
                                                                break;

                                                        case EBML_ID_INFO: // Contains miscellaneous general information and statistics on the file.
                                                                $info_entry = array();

                                                                while ($this->getEBMLelement($subelement, $element_data['end'], true)) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_TIMECODESCALE:
                                                                                        $info_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
                                                                                        break;

                                                                                case EBML_ID_DURATION:
                                                                                        $info_entry[$subelement['id_name']] = getid3_lib::BigEndian2Float($subelement['data']);
                                                                                        break;

                                                                                case EBML_ID_DATEUTC:
                                                                                        $info_entry[$subelement['id_name']]         = getid3_lib::BigEndian2Int($subelement['data']);
                                                                                        $info_entry[$subelement['id_name'].'_unix'] = self::EBMLdate2unix($info_entry[$subelement['id_name']]);
                                                                                        break;

                                                                                case EBML_ID_SEGMENTUID:
                                                                                case EBML_ID_PREVUID:
                                                                                case EBML_ID_NEXTUID:
                                                                                        $info_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
                                                                                        break;

                                                                                case EBML_ID_SEGMENTFAMILY:
                                                                                        $info_entry[$subelement['id_name']][] = getid3_lib::trimNullByte($subelement['data']);
                                                                                        break;

                                                                                case EBML_ID_SEGMENTFILENAME:
                                                                                case EBML_ID_PREVFILENAME:
                                                                                case EBML_ID_NEXTFILENAME:
                                                                                case EBML_ID_TITLE:
                                                                                case EBML_ID_MUXINGAPP:
                                                                                case EBML_ID_WRITINGAPP:
                                                                                        $info_entry[$subelement['id_name']] = getid3_lib::trimNullByte($subelement['data']);
                                                                                        $info['matroska']['comments'][strtolower($subelement['id_name'])][] = $info_entry[$subelement['id_name']];
                                                                                        break;

                                                                                case EBML_ID_CHAPTERTRANSLATE:
                                                                                        $chaptertranslate_entry = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_CHAPTERTRANSLATEEDITIONUID:
                                                                                                                $chaptertranslate_entry[$sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CHAPTERTRANSLATECODEC:
                                                                                                                $chaptertranslate_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CHAPTERTRANSLATEID:
                                                                                                                $chaptertranslate_entry[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('info.chaptertranslate', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $info_entry[$subelement['id_name']] = $chaptertranslate_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('info', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                }
                                                                $info['matroska']['info'][] = $info_entry;
                                                                break;

                                                        case EBML_ID_CUES: // A top-level element to speed seeking access. All entries are local to the segment. Should be mandatory for non "live" streams.
                                                                if (self::$hide_clusters) { // do not parse cues if hide clusters is "ON" till they point to clusters anyway
                                                                        $this->current_offset = $element_data['end'];
                                                                        break;
                                                                }
                                                                $cues_entry = array();

                                                                while ($this->getEBMLelement($subelement, $element_data['end'])) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_CUEPOINT:
                                                                                        $cuepoint_entry = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CUETRACKPOSITIONS))) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_CUETRACKPOSITIONS:
                                                                                                                $cuetrackpositions_entry = array();

                                                                                                                while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], true)) {
                                                                                                                        switch ($sub_sub_subelement['id']) {

                                                                                                                                case EBML_ID_CUETRACK:
                                                                                                                                case EBML_ID_CUECLUSTERPOSITION:
                                                                                                                                case EBML_ID_CUEBLOCKNUMBER:
                                                                                                                                case EBML_ID_CUECODECSTATE:
                                                                                                                                        $cuetrackpositions_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('cues.cuepoint.cuetrackpositions', __LINE__, $sub_sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                $cuepoint_entry[$sub_subelement['id_name']][] = $cuetrackpositions_entry;
                                                                                                                break;

                                                                                                        case EBML_ID_CUETIME:
                                                                                                                $cuepoint_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('cues.cuepoint', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $cues_entry[] = $cuepoint_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('cues', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                }
                                                                $info['matroska']['cues'] = $cues_entry;
                                                                break;

                                                        case EBML_ID_TAGS: // Element containing elements specific to Tracks/Chapters.
                                                                $tags_entry = array();

                                                                while ($this->getEBMLelement($subelement, $element_data['end'], false)) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_TAG:
                                                                                        $tag_entry = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], false)) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_TARGETS:
                                                                                                                $targets_entry = array();

                                                                                                                while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], true)) {
                                                                                                                        switch ($sub_sub_subelement['id']) {

                                                                                                                                case EBML_ID_TARGETTYPEVALUE:
                                                                                                                                        $targets_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                        $targets_entry[strtolower($sub_sub_subelement['id_name']).'_long'] = self::TargetTypeValue($targets_entry[$sub_sub_subelement['id_name']]);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_TARGETTYPE:
                                                                                                                                        $targets_entry[$sub_sub_subelement['id_name']] = $sub_sub_subelement['data'];
                                                                                                                                        break;

                                                                                                                                case EBML_ID_TAGTRACKUID:
                                                                                                                                case EBML_ID_TAGEDITIONUID:
                                                                                                                                case EBML_ID_TAGCHAPTERUID:
                                                                                                                                case EBML_ID_TAGATTACHMENTUID:
                                                                                                                                        $targets_entry[$sub_sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('tags.tag.targets', __LINE__, $sub_sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                $tag_entry[$sub_subelement['id_name']] = $targets_entry;
                                                                                                                break;

                                                                                                        case EBML_ID_SIMPLETAG:
                                                                                                                $tag_entry[$sub_subelement['id_name']][] = $this->HandleEMBLSimpleTag($sub_subelement['end']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('tags.tag', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $tags_entry[] = $tag_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('tags', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                }
                                                                $info['matroska']['tags'] = $tags_entry;
                                                                break;

                                                        case EBML_ID_ATTACHMENTS: // Contain attached files.

                                                                while ($this->getEBMLelement($subelement, $element_data['end'])) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_ATTACHEDFILE:
                                                                                        $attachedfile_entry = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_FILEDATA))) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_FILEDESCRIPTION:
                                                                                                        case EBML_ID_FILENAME:
                                                                                                        case EBML_ID_FILEMIMETYPE:
                                                                                                                $attachedfile_entry[$sub_subelement['id_name']] = $sub_subelement['data'];
                                                                                                                break;

                                                                                                        case EBML_ID_FILEDATA:
                                                                                                                $attachedfile_entry['data_offset'] = $this->current_offset;
                                                                                                                $attachedfile_entry['data_length'] = $sub_subelement['length'];

                                                                                                                $attachedfile_entry[$sub_subelement['id_name']] = $this->saveAttachment(
                                                                                                                        $attachedfile_entry['FileName'],
                                                                                                                        $attachedfile_entry['data_offset'],
                                                                                                                        $attachedfile_entry['data_length']);

                                                                                                                $this->current_offset = $sub_subelement['end'];
                                                                                                                break;

                                                                                                        case EBML_ID_FILEUID:
                                                                                                                $attachedfile_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('attachments.attachedfile', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $info['matroska']['attachments'][] = $attachedfile_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('attachments', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                }
                                                                break;

                                                        case EBML_ID_CHAPTERS:

                                                                while ($this->getEBMLelement($subelement, $element_data['end'])) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_EDITIONENTRY:
                                                                                        $editionentry_entry = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CHAPTERATOM))) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_EDITIONUID:
                                                                                                                $editionentry_entry[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_EDITIONFLAGHIDDEN:
                                                                                                        case EBML_ID_EDITIONFLAGDEFAULT:
                                                                                                        case EBML_ID_EDITIONFLAGORDERED:
                                                                                                                $editionentry_entry[$sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CHAPTERATOM:
                                                                                                                $chapteratom_entry = array();

                                                                                                                while ($this->getEBMLelement($sub_sub_subelement, $sub_subelement['end'], array(EBML_ID_CHAPTERTRACK, EBML_ID_CHAPTERDISPLAY))) {
                                                                                                                        switch ($sub_sub_subelement['id']) {

                                                                                                                                case EBML_ID_CHAPTERSEGMENTUID:
                                                                                                                                case EBML_ID_CHAPTERSEGMENTEDITIONUID:
                                                                                                                                        $chapteratom_entry[$sub_sub_subelement['id_name']] = $sub_sub_subelement['data'];
                                                                                                                                        break;

                                                                                                                                case EBML_ID_CHAPTERFLAGENABLED:
                                                                                                                                case EBML_ID_CHAPTERFLAGHIDDEN:
                                                                                                                                        $chapteratom_entry[$sub_sub_subelement['id_name']] = (bool)getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_CHAPTERUID:
                                                                                                                                case EBML_ID_CHAPTERTIMESTART:
                                                                                                                                case EBML_ID_CHAPTERTIMEEND:
                                                                                                                                        $chapteratom_entry[$sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_subelement['data']);
                                                                                                                                        break;

                                                                                                                                case EBML_ID_CHAPTERTRACK:
                                                                                                                                        $chaptertrack_entry = array();

                                                                                                                                        while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
                                                                                                                                                switch ($sub_sub_sub_subelement['id']) {

                                                                                                                                                        case EBML_ID_CHAPTERTRACKNUMBER:
                                                                                                                                                                $chaptertrack_entry[$sub_sub_sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_sub_sub_subelement['data']);
                                                                                                                                                                break;

                                                                                                                                                        default:
                                                                                                                                                                $this->unhandledElement('chapters.editionentry.chapteratom.chaptertrack', __LINE__, $sub_sub_sub_subelement);
                                                                                                                                                                break;
                                                                                                                                                }
                                                                                                                                        }
                                                                                                                                        $chapteratom_entry[$sub_sub_subelement['id_name']][] = $chaptertrack_entry;
                                                                                                                                        break;

                                                                                                                                case EBML_ID_CHAPTERDISPLAY:
                                                                                                                                        $chapterdisplay_entry = array();

                                                                                                                                        while ($this->getEBMLelement($sub_sub_sub_subelement, $sub_sub_subelement['end'], true)) {
                                                                                                                                                switch ($sub_sub_sub_subelement['id']) {

                                                                                                                                                        case EBML_ID_CHAPSTRING:
                                                                                                                                                        case EBML_ID_CHAPLANGUAGE:
                                                                                                                                                        case EBML_ID_CHAPCOUNTRY:
                                                                                                                                                                $chapterdisplay_entry[$sub_sub_sub_subelement['id_name']] = $sub_sub_sub_subelement['data'];
                                                                                                                                                                break;

                                                                                                                                                        default:
                                                                                                                                                                $this->unhandledElement('chapters.editionentry.chapteratom.chapterdisplay', __LINE__, $sub_sub_sub_subelement);
                                                                                                                                                                break;
                                                                                                                                                }
                                                                                                                                        }
                                                                                                                                        $chapteratom_entry[$sub_sub_subelement['id_name']][] = $chapterdisplay_entry;
                                                                                                                                        break;

                                                                                                                                default:
                                                                                                                                        $this->unhandledElement('chapters.editionentry.chapteratom', __LINE__, $sub_sub_subelement);
                                                                                                                                        break;
                                                                                                                        }
                                                                                                                }
                                                                                                                $editionentry_entry[$sub_subelement['id_name']][] = $chapteratom_entry;
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('chapters.editionentry', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $info['matroska']['chapters'][] = $editionentry_entry;
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('chapters', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                }
                                                                break;

                                                        case EBML_ID_CLUSTER: // The lower level element containing the (monolithic) Block structure.
                                                                $cluster_entry = array();

                                                                while ($this->getEBMLelement($subelement, $element_data['end'], array(EBML_ID_CLUSTERSILENTTRACKS, EBML_ID_CLUSTERBLOCKGROUP, EBML_ID_CLUSTERSIMPLEBLOCK))) {
                                                                        switch ($subelement['id']) {

                                                                                case EBML_ID_CLUSTERTIMECODE:
                                                                                case EBML_ID_CLUSTERPOSITION:
                                                                                case EBML_ID_CLUSTERPREVSIZE:
                                                                                        $cluster_entry[$subelement['id_name']] = getid3_lib::BigEndian2Int($subelement['data']);
                                                                                        break;

                                                                                case EBML_ID_CLUSTERSILENTTRACKS:
                                                                                        $cluster_silent_tracks = array();

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], true)) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_CLUSTERSILENTTRACKNUMBER:
                                                                                                                $cluster_silent_tracks[] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('cluster.silenttracks', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $cluster_entry[$subelement['id_name']][] = $cluster_silent_tracks;
                                                                                        break;

                                                                                case EBML_ID_CLUSTERBLOCKGROUP:
                                                                                        $cluster_block_group = array('offset' => $this->current_offset);

                                                                                        while ($this->getEBMLelement($sub_subelement, $subelement['end'], array(EBML_ID_CLUSTERBLOCK))) {
                                                                                                switch ($sub_subelement['id']) {

                                                                                                        case EBML_ID_CLUSTERBLOCK:
                                                                                                                $cluster_block_group[$sub_subelement['id_name']] = $this->HandleEMBLClusterBlock($sub_subelement, EBML_ID_CLUSTERBLOCK, $info);
                                                                                                                break;

                                                                                                        case EBML_ID_CLUSTERREFERENCEPRIORITY: // unsigned-int
                                                                                                        case EBML_ID_CLUSTERBLOCKDURATION:     // unsigned-int
                                                                                                                $cluster_block_group[$sub_subelement['id_name']] = getid3_lib::BigEndian2Int($sub_subelement['data']);
                                                                                                                break;

                                                                                                        case EBML_ID_CLUSTERREFERENCEBLOCK:    // signed-int
                                                                                                                $cluster_block_group[$sub_subelement['id_name']][] = getid3_lib::BigEndian2Int($sub_subelement['data'], false, true);
                                                                                                                break;

                                                                                                        case EBML_ID_CLUSTERCODECSTATE:
                                                                                                                $cluster_block_group[$sub_subelement['id_name']] = getid3_lib::trimNullByte($sub_subelement['data']);
                                                                                                                break;

                                                                                                        default:
                                                                                                                $this->unhandledElement('clusters.blockgroup', __LINE__, $sub_subelement);
                                                                                                                break;
                                                                                                }
                                                                                        }
                                                                                        $cluster_entry[$subelement['id_name']][] = $cluster_block_group;
                                                                                        break;

                                                                                case EBML_ID_CLUSTERSIMPLEBLOCK:
                                                                                        $cluster_entry[$subelement['id_name']][] = $this->HandleEMBLClusterBlock($subelement, EBML_ID_CLUSTERSIMPLEBLOCK, $info);
                                                                                        break;

                                                                                default:
                                                                                        $this->unhandledElement('cluster', __LINE__, $subelement);
                                                                                        break;
                                                                        }
                                                                        $this->current_offset = $subelement['end'];
                                                                }
                                                                if (!self::$hide_clusters) {
                                                                        $info['matroska']['cluster'][] = $cluster_entry;
                                                                }

                                                                // check to see if all the data we need exists already, if so, break out of the loop
                                                                if (!self::$parse_whole_file) {
                                                                        if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
                                                                                if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
                                                                                        if (count($info['matroska']['track_data_offsets']) == count($info['matroska']['tracks']['tracks'])) {
                                                                                                return;
                                                                                        }
                                                                                }
                                                                        }
                                                                }
                                                                break;

                                                        default:
                                                                $this->unhandledElement('segment', __LINE__, $element_data);
                                                                break;
                                                }
                                        }
                                        break;

                                default:
                                        $this->unhandledElement('root', __LINE__, $top_element);
                                        break;
                        }
                }
        }

Here is the call graph for this function:

Here is the caller graph for this function:

readEBMLelementData()

getid3_matroska::readEBMLelementData (   $length,   $check_buffer = false  )

private

Definition at line 1284 of file module.audio-video.matroska.php.

References $data, and EnsureBufferHasEnoughData().

Referenced by getEBMLelement(), HandleEMBLClusterBlock(), and parseEBML().

                                                                           {
                if ($check_buffer && !$this->EnsureBufferHasEnoughData($length)) {
                        return false;
                }
                $data = substr($this->EBMLbuffer, $this->current_offset - $this->EBMLbuffer_offset, $length);
                $this->current_offset += $length;
                return $data;
        }

Here is the call graph for this function:

Here is the caller graph for this function:

readEBMLint()

getid3_matroska::readEBMLint ( )

private

Definition at line 1252 of file module.audio-video.matroska.php.

References $EBMLbuffer_offset.

Referenced by getEBMLelement(), and HandleEMBLClusterBlock().

                                       {
                $actual_offset = $this->current_offset - $this->EBMLbuffer_offset;

                // get length of integer
                $first_byte_int = ord($this->EBMLbuffer[$actual_offset]);
                if       (0x80 & $first_byte_int) {
                        $length = 1;
                } elseif (0x40 & $first_byte_int) {
                        $length = 2;
                } elseif (0x20 & $first_byte_int) {
                        $length = 3;
                } elseif (0x10 & $first_byte_int) {
                        $length = 4;
                } elseif (0x08 & $first_byte_int) {
                        $length = 5;
                } elseif (0x04 & $first_byte_int) {
                        $length = 6;
                } elseif (0x02 & $first_byte_int) {
                        $length = 7;
                } elseif (0x01 & $first_byte_int) {
                        $length = 8;
                } else {
                        throw new Exception('invalid EBML integer (leading 0x00) at '.$this->current_offset);
                }

                // read
                $int_value = self::EBML2Int(substr($this->EBMLbuffer, $actual_offset, $length));
                $this->current_offset += $length;

                return $int_value;
        }

Here is the caller graph for this function:

TargetTypeValue()

static getid3_matroska::TargetTypeValue (   $target_type )

static

Definition at line 1497 of file module.audio-video.matroska.php.

References $target_type.

                                                             {
                // http://www.matroska.org/technical/specs/tagging/index.html
                static $TargetTypeValue = array();
                if (empty($TargetTypeValue)) {
                        $TargetTypeValue[10] = 'A: ~ V:shot';                                           // the lowest hierarchy found in music or movies
                        $TargetTypeValue[20] = 'A:subtrack/part/movement ~ V:scene';                    // corresponds to parts of a track for audio (like a movement)
                        $TargetTypeValue[30] = 'A:track/song ~ V:chapter';                              // the common parts of an album or a movie
                        $TargetTypeValue[40] = 'A:part/session ~ V:part/session';                       // when an album or episode has different logical parts
                        $TargetTypeValue[50] = 'A:album/opera/concert ~ V:movie/episode/concert';       // the most common grouping level of music and video (equals to an episode for TV series)
                        $TargetTypeValue[60] = 'A:edition/issue/volume/opus ~ V:season/sequel/volume';  // a list of lower levels grouped together
                        $TargetTypeValue[70] = 'A:collection ~ V:collection';                           // the high hierarchy consisting of many different lower items
                }
                return (isset($TargetTypeValue[$target_type]) ? $TargetTypeValue[$target_type] : $target_type);
        }

unhandledElement()

getid3_matroska::unhandledElement (   $type,   $line,   $element  )

private

Definition at line 1329 of file module.audio-video.matroska.php.

References $type, and getid3_handler\warning().

Referenced by HandleEMBLSimpleTag(), and parseEBML().

                                                                  {
                // warn only about unknown and missed elements, not about unuseful
                if (!in_array($element['id'], $this->unuseful_elements)) {
                        $this->warning('Unhandled '.$type.' element ['.basename(__FILE__).':'.$line.'] ('.$element['id'].'::'.$element['id_name'].' ['.$element['length'].' bytes]) at '.$element['offset']);
                }

                // increase offset for unparsed elements
                if (!isset($element['data'])) {
                        $this->current_offset = $element['end'];
                }
        }

Here is the call graph for this function:

Here is the caller graph for this function:

Field Documentation

$current_offset

getid3_matroska::$current_offset = 0

private

Definition at line 226 of file module.audio-video.matroska.php.

Referenced by EnsureBufferHasEnoughData(), getEBMLelement(), HandleEMBLClusterBlock(), and parseEBML().

$EBMLbuffer

getid3_matroska::$EBMLbuffer = ''

private

Definition at line 223 of file module.audio-video.matroska.php.

$EBMLbuffer_length

getid3_matroska::$EBMLbuffer_length = 0

private

Definition at line 225 of file module.audio-video.matroska.php.

$EBMLbuffer_offset

getid3_matroska::$EBMLbuffer_offset = 0

private

Definition at line 224 of file module.audio-video.matroska.php.

Referenced by readEBMLint().

$hide_clusters

getid3_matroska::$hide_clusters = true

static

Definition at line 219 of file module.audio-video.matroska.php.

$parse_whole_file

getid3_matroska::$parse_whole_file = false

static

Definition at line 220 of file module.audio-video.matroska.php.

$unuseful_elements

getid3_matroska::$unuseful_elements = array(EBML_ID_CRC32, EBML_ID_VOID)

private

Definition at line 227 of file module.audio-video.matroska.php.

---

The documentation for this class was generated from the following file:

• libs/composer/vendor/james-heinrich/getid3/getid3/module.audio-video.matroska.php