private static extern void set_facial_expression_callbacks( fnType_Vs set_expression_fn, fnType_S get_expression_fn, fnType_V clear_expression_fn, fnType_S list_epxresisons_fn, fnType_Vf set_expr_trans_time_fn, fnType_F get_expr_trans_time_fn );
private static extern void set_camera_callbacks( //fnType_F get_shot_fine_tune_percent_fn fnType_V set_next_camera_shot_fn, fnType_V set_previous_camera_shot_fn, fnType_S get_camera_shot_name_fn, fnType_Vs set_camera_shot_fn, fnType_Vf set_shot_fine_tune_percentage, fnType_F get_shot_fine_tune_percentage, fnType_S list_camera_shots_fn );