Method wait

dali/operators/imgcodec/image_decoder.h:410–414

  }

  nvimgcodecStatus_t wait(int device_id) {
    assert(tp_);
    tp_->WaitForWork();
    return NVIMGCODEC_STATUS_SUCCESS;
  }

  int get_num_threads() const {
    // For the host backend, the thread pool is not available until we see the first batch.