1/**
2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import Log from './Log';
17import audio from '@ohos.multimedia.audio';
18
19const TAG = 'SingleInstanceHelper';
20const AUDIO_MANAGER_KEY = 'MultiMediaAudioManager';
21
22export default function createOrGet<T>(objectClass: { new(): T }, storageKey: string): T {
23  if (!globalThis[storageKey]) {
24    globalThis[storageKey] = new objectClass();
25    Log.showInfo(TAG, `Create key of ${storageKey}`);
26  }
27  return globalThis[storageKey];
28}
29
30export function getAudioManager() {
31  if (!globalThis[AUDIO_MANAGER_KEY]) {
32    globalThis[AUDIO_MANAGER_KEY] = audio.getAudioManager();
33    Log.showInfo(TAG, 'Create Audio Manager.');
34  }
35  return globalThis[AUDIO_MANAGER_KEY];
36}
37