getid3_matroska::Analyze(): bool

248	public function Analyze()249	{250		$info = &$this->getid3->info;251 252		// parse container253		try {254			$this->parseEBML($info);255		} catch (Exception $e) {256			$this->error('EBML parser: '.$e->getMessage());257		}258 259		// calculate playtime260		if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {261			foreach ($info['matroska']['info'] as $key => $infoarray) {262				if (isset($infoarray['Duration'])) {263					// TimecodeScale is how many nanoseconds each Duration unit is264					$info['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);265					break;266				}267			}268		}269 270		// extract tags271		if (isset($info['matroska']['tags']) && is_array($info['matroska']['tags'])) {272			foreach ($info['matroska']['tags'] as $key => $infoarray) {273				$this->ExtractCommentsSimpleTag($infoarray);274			}275		}276 277		// process tracks278		if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {279			foreach ($info['matroska']['tracks']['tracks'] as $key => $trackarray) {280 281				$track_info = array();282				$track_info['dataformat'] = self::CodecIDtoCommonName($trackarray['CodecID']);283				$track_info['default'] = (isset($trackarray['FlagDefault']) ? $trackarray['FlagDefault'] : true);284				if (isset($trackarray['Name'])) { $track_info['name'] = $trackarray['Name']; }285 286				switch ($trackarray['TrackType']) {287 288					case 1: // Video289						$track_info['resolution_x'] = $trackarray['PixelWidth'];290						$track_info['resolution_y'] = $trackarray['PixelHeight'];291						$track_info['display_unit'] = self::displayUnit(isset($trackarray['DisplayUnit']) ? $trackarray['DisplayUnit'] : 0);292						$track_info['display_x']    = (isset($trackarray['DisplayWidth']) ? $trackarray['DisplayWidth'] : $trackarray['PixelWidth']);293						$track_info['display_y']    = (isset($trackarray['DisplayHeight']) ? $trackarray['DisplayHeight'] : $trackarray['PixelHeight']);294 295						if (isset($trackarray['PixelCropBottom']))  { $track_info['crop_bottom'] = $trackarray['PixelCropBottom']; }296						if (isset($trackarray['PixelCropTop']))     { $track_info['crop_top']    = $trackarray['PixelCropTop']; }297						if (isset($trackarray['PixelCropLeft']))    { $track_info['crop_left']   = $trackarray['PixelCropLeft']; }298						if (isset($trackarray['PixelCropRight']))   { $track_info['crop_right']  = $trackarray['PixelCropRight']; }299						if (!empty($trackarray['DefaultDuration'])) { $track_info['frame_rate']  = round(1000000000 / $trackarray['DefaultDuration'], 3); }300						if (isset($trackarray['CodecName']))        { $track_info['codec']       = $trackarray['CodecName']; }301 302						switch ($trackarray['CodecID']) {303							case 'V_MS/VFW/FOURCC':304								getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, true);305 306								$parsed = getid3_riff::ParseBITMAPINFOHEADER($trackarray['CodecPrivate']);307								$track_info['codec'] = getid3_riff::fourccLookup($parsed['fourcc']);308								$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $parsed;309								break;310 311							/*case 'V_MPEG4/ISO/AVC':312								$h264['profile']    = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 1, 1));313								$h264['level']      = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 3, 1));314								$rn                 = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 4, 1));315								$h264['NALUlength'] = ($rn & 3) + 1;316								$rn                 = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], 5, 1));317								$nsps               = ($rn & 31);318								$offset             = 6;319								for ($i = 0; $i < $nsps; $i ++) {320									$length        = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));321									$h264['SPS'][] = substr($trackarray['CodecPrivate'], $offset + 2, $length);322									$offset       += 2 + $length;323								}324								$npps               = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 1));325								$offset            += 1;326								for ($i = 0; $i < $npps; $i ++) {327									$length        = getid3_lib::BigEndian2Int(substr($trackarray['CodecPrivate'], $offset, 2));