| # Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| # The code is based on: | |
| # https://github.com/facebookresearch/detectron2/blob/main/detectron2/layers/shape_spec.py | |
| from collections import namedtuple | |
| class ShapeSpec( | |
| namedtuple("_ShapeSpec", ["channels", "height", "width", "stride"])): | |
| def __new__(cls, channels=None, height=None, width=None, stride=None): | |
| return super(ShapeSpec, cls).__new__(cls, channels, height, width, | |
| stride) | |