1 /* 2 * Copyright (C) 2021 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 #ifndef ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H 17 #define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H 18 19 #include "AudioControlServer.h" 20 21 #include <aidl/android/hardware/automotive/audiocontrol/AudioFocusChange.h> 22 #include <aidl/android/hardware/automotive/audiocontrol/BnAudioControl.h> 23 #include <aidl/android/hardware/automotive/audiocontrol/DuckingInfo.h> 24 25 namespace aidl::android::hardware::automotive::audiocontrol { 26 27 using ::std::shared_ptr; 28 using ::std::unique_ptr; 29 30 class AudioControl : public BnAudioControl { 31 public: 32 explicit AudioControl(const std::string& audio_control_server_addr); 33 34 ndk::ScopedAStatus onAudioFocusChange(const std::string& in_usage, int32_t in_zoneId, 35 AudioFocusChange in_focusChange) override; 36 ndk::ScopedAStatus onDevicesToDuckChange( 37 const std::vector<DuckingInfo>& in_duckingInfos) override; 38 ndk::ScopedAStatus onDevicesToMuteChange( 39 const std::vector<MutingInfo>& in_mutingInfos) override; 40 ndk::ScopedAStatus registerFocusListener( 41 const shared_ptr<IFocusListener>& in_listener) override; 42 ndk::ScopedAStatus setBalanceTowardRight(float in_value) override; 43 ndk::ScopedAStatus setFadeTowardFront(float in_value) override; 44 binder_status_t dump(int fd, const char** args, uint32_t numArgs) override; 45 46 bool isHealthy(); 47 48 void start(); 49 void join(); 50 51 private: 52 // This focus listener will only be used by this HAL instance to communicate with 53 // a single instance of CarAudioService. As such, it doesn't have explicit serialization. 54 // If a different AudioControl implementation were to have multiple threads leveraging this 55 // listener, then it should also include mutexes or make the listener atomic. 56 shared_ptr<IFocusListener> mFocusListener; 57 unique_ptr<AudioControlServer> mAudioControlServer; 58 }; 59 60 } // namespace aidl::android::hardware::automotive::audiocontrol 61 62 #endif // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H 63