public function parseMETAdata() {
    $info = &$this->getid3->info;
    do {
      $BlockOffset   = $this->ftell();
      $BlockHeader   = $this->fread(4);
      $LBFBT         = getid3_lib::BigEndian2Int(substr($BlockHeader, 0, 1));  // LBFBT = LastBlockFlag + BlockType
      $LastBlockFlag = (bool) ($LBFBT & 0x80);
      $BlockType     =        ($LBFBT & 0x7F);
      $BlockLength   = getid3_lib::BigEndian2Int(substr($BlockHeader, 1, 3));
      $BlockTypeText = self::metaBlockTypeLookup($BlockType);

      if (($BlockOffset + 4 + $BlockLength) > $info['avdataend']) {
        $this->warning('METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockTypeText.') at offset '.$BlockOffset.' extends beyond end of file');
        break;
      }
      if ($BlockLength < 1) {
        if ($BlockTypeText != 'reserved') {
          // probably supposed to be zero-length
          $this->warning('METADATA_BLOCK_HEADER.BLOCK_LENGTH ('.$BlockTypeText.') at offset '.$BlockOffset.' is zero bytes');
          continue;
        }
        $this->error('METADATA_BLOCK_HEADER.BLOCK_LENGTH ('.$BlockLength.') at offset '.$BlockOffset.' is invalid');
        break;
      }

      $info['flac'][$BlockTypeText]['raw'] = array();
      $BlockTypeText_raw = &$info['flac'][$BlockTypeText]['raw'];

      $BlockTypeText_raw['offset']          = $BlockOffset;
      $BlockTypeText_raw['last_meta_block'] = $LastBlockFlag;
      $BlockTypeText_raw['block_type']      = $BlockType;
      $BlockTypeText_raw['block_type_text'] = $BlockTypeText;
      $BlockTypeText_raw['block_length']    = $BlockLength;
      if ($BlockTypeText_raw['block_type'] != 0x06) { // do not read attachment data automatically
        $BlockTypeText_raw['block_data']  = $this->fread($BlockLength);
      }

      switch ($BlockTypeText) {
        case 'STREAMINFO':     // 0x00
          if (!$this->getid3_flac::parseSTREAMINFO($BlockTypeText_raw['block_data'])) {
            return false;
          }
          break;

        case 'PADDING':        // 0x01
          unset($info['flac']['PADDING']); // ignore
          break;

        case 'APPLICATION':    // 0x02
          if (!$this->getid3_flac::parseAPPLICATION($BlockTypeText_raw['block_data'])) {
            return false;
          }
          break;

        case 'SEEKTABLE':      // 0x03
          if (!$this->getid3_flac::parseSEEKTABLE($BlockTypeText_raw['block_data'])) {
            return false;
          }
          break;

        case 'VORBIS_COMMENT': // 0x04
          if (!$this->getid3_flac::parseVORBIS_COMMENT($BlockTypeText_raw['block_data'])) {
            return false;
          }
          break;

        case 'CUESHEET':       // 0x05
          if (!$this->getid3_flac::parseCUESHEET($BlockTypeText_raw['block_data'])) {
            return false;
          }
          break;

        case 'PICTURE':        // 0x06
          if (!$this->getid3_flac::parsePICTURE()) {
            return false;
          }
          break;

        default:
          $this->warning('Unhandled METADATA_BLOCK_HEADER.BLOCK_TYPE ('.$BlockType.') at offset '.$BlockOffset);
      }

      unset($info['flac'][$BlockTypeText]['raw']);
      $info['avdataoffset'] = $this->ftell();
    }
    while ($LastBlockFlag === false);

    // handle tags
    if (!empty($info['flac']['VORBIS_COMMENT']['comments'])) {
      $info['flac']['comments'] = $info['flac']['VORBIS_COMMENT']['comments'];
    }
    if (!empty($info['flac']['VORBIS_COMMENT']['vendor'])) {
      $info['audio']['encoder'] = str_replace('reference ', '', $info['flac']['VORBIS_COMMENT']['vendor']);
    }

    // copy attachments to 'comments' array if nesesary
    if (isset($info['flac']['PICTURE']) && ($this->getid3->option_save_attachments !== getID3::ATTACHMENTS_NONE)) {
      foreach ($info['flac']['PICTURE'] as $entry) {
        if (!empty($entry['data'])) {