1 /* 2 * Copyright (C) 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 __ANDROID_TRACK_PLAYER_BASE_H__ 18 #define __ANDROID_TRACK_PLAYER_BASE_H__ 19 20 #include <media/AudioTrack.h> 21 #include <media/PlayerBase.h> 22 #include <mediautils/Synchronization.h> 23 24 namespace android { 25 26 class TrackPlayerBase : public PlayerBase 27 { 28 public: 29 explicit TrackPlayerBase(); 30 virtual ~TrackPlayerBase(); 31 32 void init(const sp<AudioTrack>& pat, const sp<AudioTrack::IAudioTrackCallback>& callback, 33 player_type_t playerType, audio_usage_t usage, audio_session_t sessionId); 34 virtual void destroy(); 35 36 //IPlayer implementation 37 virtual binder::Status applyVolumeShaper( 38 const media::VolumeShaperConfiguration& configuration, 39 const media::VolumeShaperOperation& operation); 40 getAudioTrack()41 sp<AudioTrack> getAudioTrack() { return mAudioTrack.load(); } 42 clearAudioTrack()43 void clearAudioTrack() { mAudioTrack.store(nullptr); } 44 45 void setPlayerVolume(float vl, float vr); 46 47 protected: 48 49 //PlayerBase virtuals 50 virtual status_t playerStart(); 51 virtual status_t playerPause(); 52 virtual status_t playerStop(); 53 virtual status_t playerSetVolume(); 54 55 private: 56 void doDestroy(); 57 status_t doSetVolume(); 58 59 class SelfAudioDeviceCallback : public AudioSystem::AudioDeviceCallback { 60 public: 61 SelfAudioDeviceCallback(PlayerBase& self); 62 virtual void onAudioDeviceUpdate(audio_io_handle_t audioIo, 63 const DeviceIdVector& deviceIds); 64 private: 65 virtual ~SelfAudioDeviceCallback(); 66 PlayerBase& mSelf; 67 }; 68 69 // volume coming from the player volume API 70 float mPlayerVolumeL, mPlayerVolumeR; 71 sp<AudioTrack::IAudioTrackCallback> mCallbackHandle; 72 sp<SelfAudioDeviceCallback> mSelfAudioDeviceCallback; 73 mediautils::atomic_sp<AudioTrack> mAudioTrack; 74 }; 75 76 } // namespace android 77 78 #endif /* __ANDROID_TRACK_PLAYER_BASE_H__ */ 79