1 /* 2 * Copyright (c) 2024 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 OHOS_CAMERA_DYNAMIC_LOADER_H 17 #define OHOS_CAMERA_DYNAMIC_LOADER_H 18 19 #include <string> 20 21 namespace OHOS { 22 namespace CameraStandard { 23 using namespace std; 24 25 const std::string MEDIA_LIB_SO = "libcamera_dynamic_medialibrary.z.so"; 26 const std::string PICTURE_SO = "libcamera_dynamic_picture.z.so"; 27 28 class Dynamiclib { 29 public: 30 explicit Dynamiclib(const std::string& libName); 31 ~Dynamiclib(); 32 bool IsLoaded(); 33 void* GetFunction(const std::string& functionName); 34 35 private: 36 std::string libName_; 37 void* libHandle_ = nullptr; 38 }; 39 40 class CameraDynamicLoader { 41 public: 42 static std::shared_ptr<Dynamiclib> GetDynamiclib(const std::string& libName); 43 static void LoadDynamiclibAsync(const std::string& libName); 44 static void FreeDynamiclib(const std::string& libName); 45 46 private: 47 explicit CameraDynamicLoader() = delete; 48 CameraDynamicLoader(const CameraDynamicLoader&) = delete; 49 CameraDynamicLoader& operator=(const CameraDynamicLoader&) = delete; 50 51 static std::shared_ptr<Dynamiclib> GetDynamiclibNoLock(const std::string& libName); 52 }; 53 54 } // namespace CameraStandard 55 } // namespace OHOS 56 #endif // OHOS_CAMERA_DYNAMIC_LOADER_H