1 /* 2 * Copyright 2017 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 #ifndef OBOE_ENGINE_OPENSLES_H 18 #define OBOE_ENGINE_OPENSLES_H 19 20 #include <atomic> 21 #include <mutex> 22 23 #include <SLES/OpenSLES.h> 24 #include <SLES/OpenSLES_Android.h> 25 26 namespace oboe { 27 28 /** 29 * INTERNAL USE ONLY 30 */ 31 class EngineOpenSLES { 32 public: 33 static EngineOpenSLES &getInstance(); 34 35 SLresult open(); 36 37 void close(); 38 39 SLresult createOutputMix(SLObjectItf *objectItf); 40 41 SLresult createAudioPlayer(SLObjectItf *objectItf, 42 SLDataSource *audioSource, 43 SLDataSink *audioSink); 44 SLresult createAudioRecorder(SLObjectItf *objectItf, 45 SLDataSource *audioSource, 46 SLDataSink *audioSink); 47 48 private: 49 // Make this a safe Singleton 50 EngineOpenSLES()= default; 51 ~EngineOpenSLES()= default; 52 EngineOpenSLES(const EngineOpenSLES&)= delete; 53 EngineOpenSLES& operator=(const EngineOpenSLES&)= delete; 54 55 std::mutex mLock; 56 int32_t mOpenCount = 0; 57 58 SLObjectItf mEngineObject = nullptr; 59 SLEngineItf mEngineInterface = nullptr; 60 }; 61 62 } // namespace oboe 63 64 65 #endif //OBOE_ENGINE_OPENSLES_H 66