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 AUDIO_OUTPUT_STREAM_OPENSL_ES_H_ 18 #define AUDIO_OUTPUT_STREAM_OPENSL_ES_H_ 19 20 21 #include "oboe/Oboe.h" 22 #include "EngineOpenSLES.h" 23 #include "AudioStreamOpenSLES.h" 24 25 namespace oboe { 26 27 /** 28 * INTERNAL USE ONLY 29 */ 30 class AudioOutputStreamOpenSLES : public AudioStreamOpenSLES { 31 public: 32 AudioOutputStreamOpenSLES(); 33 explicit AudioOutputStreamOpenSLES(const AudioStreamBuilder &builder); 34 35 virtual ~AudioOutputStreamOpenSLES() = default; 36 37 Result open() override; 38 Result close() override; 39 40 Result requestStart() override; 41 Result requestPause() override; 42 Result requestFlush() override; 43 Result requestStop() override; 44 45 protected: 46 Result requestPause_l(); 47 48 void setFramesRead(int64_t framesRead); 49 50 Result updateServiceFrameCounter() override; 51 52 void updateFramesRead() override; 53 54 private: 55 56 SLuint32 channelCountToChannelMask(int chanCount) const; 57 58 Result onAfterDestroy() override; 59 60 Result requestFlush_l(); 61 62 Result requestStop_l(); 63 64 /** 65 * Set OpenSL ES PLAYSTATE. 66 * 67 * @param newState SL_PLAYSTATE_PAUSED, SL_PLAYSTATE_PLAYING, SL_PLAYSTATE_STOPPED 68 * @return 69 */ 70 Result setPlayState_l(SLuint32 newState); 71 72 SLPlayItf mPlayInterface = nullptr; 73 74 }; 75 76 } // namespace oboe 77 78 #endif //AUDIO_OUTPUT_STREAM_OPENSL_ES_H_ 79