getid3_matroska::parseEBML( array $info )

545	private function parseEBML(&$info) {546		// http://www.matroska.org/technical/specs/index.html#EBMLBasics547		$this->current_offset = $info['avdataoffset'];548 549		while ($this->getEBMLelement($top_element, $info['avdataend'])) {550			switch ($top_element['id']) {551 552				case EBML_ID_EBML:553					$info['matroska']['header']['offset'] = $top_element['offset'];554					$info['matroska']['header']['length'] = $top_element['length'];555 556					while ($this->getEBMLelement($element_data, $top_element['end'], true)) {557						switch ($element_data['id']) {558 559							case EBML_ID_EBMLVERSION:560							case EBML_ID_EBMLREADVERSION:561							case EBML_ID_EBMLMAXIDLENGTH:562							case EBML_ID_EBMLMAXSIZELENGTH:563							case EBML_ID_DOCTYPEVERSION:564							case EBML_ID_DOCTYPEREADVERSION:565								$element_data['data'] = getid3_lib::BigEndian2Int($element_data['data']);566								break;567 568							case EBML_ID_DOCTYPE:569								$element_data['data'] = getid3_lib::trimNullByte($element_data['data']);570								$info['matroska']['doctype'] = $element_data['data'];571								$info['fileformat'] = $element_data['data'];572								break;573 574							default:575								$this->unhandledElement('header', __LINE__, $element_data);576								break;577						}578 579						unset($element_data['offset'], $element_data['end']);580						$info['matroska']['header']['elements'][] = $element_data;581					}582					break;583 584				case EBML_ID_SEGMENT:585					$info['matroska']['segment'][0]['offset'] = $top_element['offset'];586					$info['matroska']['segment'][0]['length'] = $top_element['length'];587 588					while ($this->getEBMLelement($element_data, $top_element['end'])) {589						if ($element_data['id'] != EBML_ID_CLUSTER || !$this->hide_clusters) { // collect clusters only if required590							$info['matroska']['segments'][] = $element_data;591						}592						switch ($element_data['id']) {593 594							case EBML_ID_SEEKHEAD: // Contains the position of other level 1 elements.595 596								while ($this->getEBMLelement($seek_entry, $element_data['end'])) {597									switch ($seek_entry['id']) {598 599										case EBML_ID_SEEK: // Contains a single seek entry to an EBML element600											while ($this->getEBMLelement($sub_seek_entry, $seek_entry['end'], true)) {601 602												switch ($sub_seek_entry['id']) {603 604													case EBML_ID_SEEKID:605														$seek_entry['target_id']   = self::EBML2Int($sub_seek_entry['data']);606														$seek_entry['target_name'] = self::EBMLidName($seek_entry['target_id']);607														break;608 609													case EBML_ID_SEEKPOSITION:610														$seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($sub_seek_entry['data']);611														break;612 613													default:614														$this->unhandledElement('seekhead.seek', __LINE__, $sub_seek_entry);												}615														break;616											}617											if (!isset($seek_entry['target_id'])) {618												$this->warning('seek_entry[target_id] unexpectedly not set at '.$seek_entry['offset']);619												break;620											}621											if (($seek_entry['target_id'] != EBML_ID_CLUSTER) || !$this->hide_clusters) { // collect clusters only if required622												$info['matroska']['seek'][] = $seek_entry;623											}624											break;