def _get_meter_mode(self):
    self._check_camera_open()
    return self._METER_MODES_R[self._camera.control.params[mmal.MMAL_PARAMETER_EXP_METERING_MODE].value]
def _get_meter_mode(self):
    self._check_camera_open()
    return self._METER_MODES_R[self._camera.control.params[mmal.MMAL_PARAMETER_EXP_METERING_MODE].value]