#!/usr/bin/env python3
# Copyright      2021  Xiaomi Corp.        (authors: Mingshuang Luo)
#
# See ../../../../LICENSE for clarification regarding multiple authors
#
# 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 random


def HorizontalFlip(batch_img, p=0.5):
    # (T, H, W, C)
    if random.random() > p:
        batch_img = batch_img[:, :, ::-1, ...]
    return batch_img


def ColorNormalize(batch_img):
    batch_img = batch_img / 255.0
    return batch_img