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 <SLES/OpenSLES.h> 24 #include <SLES/OpenSLES_Android.h> 25 26 namespace oboe { 27 28 /** 29 * INTERNAL USE ONLY 30 */ 31 32 class OutputMixerOpenSL { 33 public: 34 static OutputMixerOpenSL &getInstance(); 35 36 SLresult open(); 37 38 void close(); 39 40 SLresult createAudioPlayer(SLObjectItf *objectItf, 41 SLDataSource *audioSource); 42 43 private: 44 // Make this a safe Singleton 45 OutputMixerOpenSL()= default; 46 ~OutputMixerOpenSL()= default; 47 OutputMixerOpenSL(const OutputMixerOpenSL&)= delete; 48 OutputMixerOpenSL& operator=(const OutputMixerOpenSL&)= delete; 49 50 std::mutex mLock; 51 int32_t mOpenCount = 0; 52 53 SLObjectItf mOutputMixObject = nullptr; 54 }; 55 56 } // namespace oboe 57 58 #endif //OBOE_OUTPUT_MIXER_OPENSLES_H 59