getid3_matroska::readEBMLint

	/**
	 * @param int $min_data
	 *
	 * @return bool
	 */
	private function EnsureBufferHasEnoughData($min_data=1024) {
		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;
	}

	/**
	 * @return int|float|false
	 */
	private function readEBMLint() {
		$actual_offset = $this->current_offset - $this->EBMLbuffer_offset;