int (*dev_config_set) (int dev_index, int hwcap, void *value);
int (*dev_acquisition_start) (int dev_index, void *session_dev_id);
int (*dev_acquisition_stop) (int dev_index, void *session_dev_id);
int (*dev_config_set) (int dev_index, int hwcap, void *value);
int (*dev_acquisition_start) (int dev_index, void *session_dev_id);
int (*dev_acquisition_stop) (int dev_index, void *session_dev_id);