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 23 namespace OHOS::Camera { 24 class BufferManager { 25 public: 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 private: 37 BufferManager() = default; 38 BufferManager(const BufferManager&); 39 BufferManager& operator=(const BufferManager&); 40 BufferManager(BufferManager&&); 41 BufferManager& operator=(BufferManager&&); 42 43 ~BufferManager() = default; 44 45 std::mutex lock_; 46 std::map<int64_t, std::weak_ptr<IBufferPool>> bufferPoolMap_; 47 }; 48 } // namespace OHOS::Camera 49 #endif 50