def _get_drc_strength(self):
    self._check_camera_open()
    return self._DRC_STRENGTHS_R[self._camera.control.params[mmal.MMAL_PARAMETER_DYNAMIC_RANGE_COMPRESSION].strength]
def _get_drc_strength(self):
    self._check_camera_open()
    return self._DRC_STRENGTHS_R[self._camera.control.params[mmal.MMAL_PARAMETER_DYNAMIC_RANGE_COMPRESSION].strength]