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_OUTPUT_MIXER_OPENSLES_H 18 #define OBOE_OUTPUT_MIXER_OPENSLES_H 19 20 #include <atomic> 21 #include <mutex> 22 23 #include "EngineOpenSLES.h" 24 25 namespace oboe { 26 27 /** 28 * INTERNAL USE ONLY 29 */ 30 31 class OutputMixerOpenSL { 32 public: 33 static OutputMixerOpenSL &getInstance(); 34 35 SLresult open(); 36 37 void close(); 38 39 SLresult createAudioPlayer(SLObjectItf *objectItf, 40 SLDataSource *audioSource); 41 42 private: 43 // Make this a safe Singleton 44 OutputMixerOpenSL()= default; 45 ~OutputMixerOpenSL()= default; 46 OutputMixerOpenSL(const OutputMixerOpenSL&)= delete; 47 OutputMixerOpenSL& operator=(const OutputMixerOpenSL&)= delete; 48 49 std::mutex mLock; 50 int32_t mOpenCount = 0; 51 52 SLObjectItf mOutputMixObject = nullptr; 53 }; 54 55 } // namespace oboe 56 57 #endif //OBOE_OUTPUT_MIXER_OPENSLES_H 58