void set_image_and_draw ();
void draw (Position<int> inter_position, dcp::Size inter_size);
void thread ();
void thread_playing ();
void request_one_shot ();
void set_image_and_draw ();
void draw (Position<int> inter_position, dcp::Size inter_size);
void thread ();
void thread_playing ();
void request_one_shot ();