bool ProtoCameraSettings::CommitMeteringMode() { MMAL_PARAMETER_EXPOSUREMETERINGMODE_T meter_mode = { {MMAL_PARAMETER_EXP_METERING_MODE,sizeof(meter_mode)}, ( MMAL_PARAM_EXPOSUREMETERINGMODE_T )m_parameters.exposure_meter_mode() }; return !mmal_status_to_int( mmal_port_parameter_set( m_component->m_mmal_component.GetControlPort(), &meter_mode.hdr ) ); }