code: def read_worker(args, q_in, q_out):
      
      while True:
          deq = q_in.get()
          if deq is None:
              break
          i, item = deq
          image_encode(args, i, item, q_out)
docs: Function that will be spawned to fetch the image
      from the input queue and put it back to output queue.
      Parameters
      ----------
      args: object
      q_in: queue
      q_out: queue