1 /* 2 * Copyright 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <functional> 20 #include <memory> 21 #include <string> 22 23 #include <EngineInterface.h> 24 25 namespace android { 26 27 using EngineInstance = std::unique_ptr<EngineInterface, std::function<void (EngineInterface*)>>; 28 29 class EngineLibrary : public std::enable_shared_from_this<EngineLibrary> { 30 public: 31 static std::shared_ptr<EngineLibrary> load(std::string libraryPath); 32 ~EngineLibrary(); 33 34 EngineLibrary(const EngineLibrary&) = delete; 35 EngineLibrary(EngineLibrary&&) = delete; 36 EngineLibrary& operator=(const EngineLibrary&) = delete; 37 EngineLibrary& operator=(EngineLibrary&&) = delete; 38 39 EngineInstance createEngine(); 40 41 private: 42 EngineLibrary() = default; 43 bool init(std::string libraryPath); 44 void close(); 45 46 void *mLibraryHandle = nullptr; 47 EngineInterface* (*mCreateEngineInstance)() = nullptr; 48 void (*mDestroyEngineInstance)(EngineInterface*) = nullptr; 49 }; 50 51 } // namespace android 52