#   Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
#
# 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.

import numpy as np
import cv2
from io import BytesIO


def resize_by_max(image, max_side=512, force=False):
    h, w = image.shape[:2]
    if max(h, w) < max_side and not force:
        return image
    ratio = max(h, w) / max_side

    w = int(w / ratio + 0.5)
    h = int(h / ratio + 0.5)
    return cv2.resize(image, (w, h))