1/*
2 * Copyright (c) 2021 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
16#ifndef HOS_CAMERA_BUFFER_MANAGER_H
17#define HOS_CAMERA_BUFFER_MANAGER_H
18
19#include "ibuffer_pool.h"
20#include <map>
21#include <mutex>
22
23namespace OHOS::Camera {
24class BufferManager {
25public:
26
27    // get a pointer of BufferManager
28    static BufferManager* GetInstance();
29
30    // generate a random id for buffer pool.
31    uint64_t GenerateBufferPoolId();
32
33    // get a buffer pool from id.
34    std::shared_ptr<IBufferPool> GetBufferPool(uint64_t id);
35
36    void EraseBufferPoolMapById(uint64_t id);
37
38private:
39    BufferManager() = default;
40    BufferManager(const BufferManager&);
41    BufferManager& operator=(const BufferManager&);
42    BufferManager(BufferManager&&);
43    BufferManager& operator=(BufferManager&&);
44
45    ~BufferManager() = default;
46
47    std::mutex lock_;
48    std::map<int64_t, std::weak_ptr<IBufferPool>> bufferPoolMap_;
49};
50} // namespace OHOS::Camera
51#endif
52