void ms_bitrate_controller_destroy(MSBitrateController *obj){
	ms_qos_analyzer_unref(obj->analyzer);
	ms_bitrate_driver_unref(obj->driver);
	ms_free(obj);
}
static void av_bitrate_driver_uninit(MSBitrateDriver *objbase){
	MSAVBitrateDriver *obj=(MSAVBitrateDriver*)objbase;
	if (obj->audio_driver)
		ms_bitrate_driver_unref(obj->audio_driver);
	
}