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 23 namespace android { 24 25 class TrackPlayerBase : public PlayerBase 26 { 27 public: 28 explicit TrackPlayerBase(); 29 virtual ~TrackPlayerBase(); 30 31 void init(const sp<AudioTrack>& pat, const sp<AudioTrack::IAudioTrackCallback>& callback, 32 player_type_t playerType, audio_usage_t usage, audio_session_t sessionId); 33 virtual void destroy(); 34 35 //IPlayer implementation 36 virtual binder::Status applyVolumeShaper( 37 const media::VolumeShaperConfiguration& configuration, 38 const media::VolumeShaperOperation& operation); 39 40 //FIXME move to protected field, so far made public to minimize changes to AudioTrack logic 41 sp<AudioTrack> mAudioTrack; 42 43 void setPlayerVolume(float vl, float vr); 44 45 protected: 46 47 //PlayerBase virtuals 48 virtual status_t playerStart(); 49 virtual status_t playerPause(); 50 virtual status_t playerStop(); 51 virtual status_t playerSetVolume(); 52 53 private: 54 void doDestroy(); 55 status_t doSetVolume(); 56 57 class SelfAudioDeviceCallback : public AudioSystem::AudioDeviceCallback { 58 public: 59 SelfAudioDeviceCallback(PlayerBase& self); 60 virtual void onAudioDeviceUpdate(audio_io_handle_t audioIo, 61 audio_port_handle_t deviceId); 62 private: 63 virtual ~SelfAudioDeviceCallback(); 64 PlayerBase& mSelf; 65 }; 66 67 // volume coming from the player volume API 68 float mPlayerVolumeL, mPlayerVolumeR; 69 sp<AudioTrack::IAudioTrackCallback> mCallbackHandle; 70 sp<SelfAudioDeviceCallback> mSelfAudioDeviceCallback; 71 }; 72 73 } // namespace android 74 75 #endif /* __ANDROID_TRACK_PLAYER_BASE_H__ */ 76