restructure code for clarity

                            pass

                    with self.dec_queue["condition"]:

                        if not self.dec_queue["dec_entries"]:

                        dec_queue_empty = len(self.dec_queue["dec_entries"]) == 0

                        all_encoded = self.dec_queue["all_encoded"]

                        all_modes_done = self.stats["num_modes"] == self.stats["num_modes_finished"]

                            if all_encoded and all_modes_done:

                        if dec_queue_empty and all_encoded and all_modes_done:

                            self.dec_queue["condition"].notify()

                            break

                        else:

                            self.dec_queue["condition"].wait(1)

                        while self.dec_queue["dec_entries"] != []:

                        # can not reuse dec_queue_empty here, since there might be new items after waiting

                        while len(self.dec_queue["dec_entries"]) != 0:

                            config = self.dec_queue["dec_entries"].pop(0)

                            tasks_dec.append(executor.submit(self.ivas_dec_thread, config))