1 /* 2 * Copyright (C) 2020 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 <aidl/android/hardware/automotive/audiocontrol/AudioFocusChange.h> 20 #include <aidl/android/hardware/automotive/audiocontrol/AudioGainConfigInfo.h> 21 #include <aidl/android/hardware/automotive/audiocontrol/BnAudioControl.h> 22 #include <aidl/android/hardware/automotive/audiocontrol/DuckingInfo.h> 23 #include <aidl/android/hardware/automotive/audiocontrol/IAudioGainCallback.h> 24 #include <aidl/android/hardware/automotive/audiocontrol/IModuleChangeCallback.h> 25 #include <aidl/android/hardware/automotive/audiocontrol/MutingInfo.h> 26 #include <aidl/android/hardware/automotive/audiocontrol/Reasons.h> 27 28 #include <aidl/android/hardware/audio/common/PlaybackTrackMetadata.h> 29 30 #include <aidl/android/media/audio/common/AudioChannelLayout.h> 31 #include <aidl/android/media/audio/common/AudioDeviceType.h> 32 #include <aidl/android/media/audio/common/AudioFormatDescription.h> 33 #include <aidl/android/media/audio/common/AudioFormatType.h> 34 #include <aidl/android/media/audio/common/AudioGainMode.h> 35 #include <aidl/android/media/audio/common/AudioIoFlags.h> 36 #include <aidl/android/media/audio/common/AudioOutputFlags.h> 37 38 namespace aidl::android::hardware::automotive::audiocontrol { 39 40 namespace audiohalcommon = ::aidl::android::hardware::audio::common; 41 namespace audiomediacommon = ::aidl::android::media::audio::common; 42 43 class AudioControl : public BnAudioControl { 44 public: 45 ndk::ScopedAStatus onAudioFocusChange(const std::string& in_usage, int32_t in_zoneId, 46 AudioFocusChange in_focusChange) override; 47 ndk::ScopedAStatus onDevicesToDuckChange( 48 const std::vector<DuckingInfo>& in_duckingInfos) override; 49 ndk::ScopedAStatus onDevicesToMuteChange( 50 const std::vector<MutingInfo>& in_mutingInfos) override; 51 ndk::ScopedAStatus registerFocusListener( 52 const std::shared_ptr<IFocusListener>& in_listener) override; 53 ndk::ScopedAStatus setBalanceTowardRight(float in_value) override; 54 ndk::ScopedAStatus setFadeTowardFront(float in_value) override; 55 ndk::ScopedAStatus onAudioFocusChangeWithMetaData( 56 const audiohalcommon::PlaybackTrackMetadata& in_playbackMetaData, int32_t in_zoneId, 57 AudioFocusChange in_focusChange) override; 58 ndk::ScopedAStatus setAudioDeviceGainsChanged( 59 const std::vector<Reasons>& in_reasons, 60 const std::vector<AudioGainConfigInfo>& in_gains) override; 61 ndk::ScopedAStatus registerGainCallback( 62 const std::shared_ptr<IAudioGainCallback>& in_callback) override; 63 ndk::ScopedAStatus setModuleChangeCallback( 64 const std::shared_ptr<IModuleChangeCallback>& in_callback) override; 65 ndk::ScopedAStatus clearModuleChangeCallback() override; 66 67 binder_status_t dump(int fd, const char** args, uint32_t numArgs) override; 68 69 private: 70 // This focus listener will only be used by this HAL instance to communicate with 71 // a single instance of CarAudioService. As such, it doesn't have explicit serialization. 72 // If a different AudioControl implementation were to have multiple threads leveraging this 73 // listener, then it should also include mutexes or make the listener atomic. 74 std::shared_ptr<IFocusListener> mFocusListener; 75 76 /** 77 * @brief mAudioGainCallback will be used by this HAL instance to communicate e.g. with a single 78 * instance of CarAudioService to report unexpected gain changed. 79 */ 80 std::shared_ptr<IAudioGainCallback> mAudioGainCallback = nullptr; 81 82 std::shared_ptr<IModuleChangeCallback> mModuleChangeCallback = nullptr; 83 84 binder_status_t cmdHelp(int fd) const; 85 binder_status_t cmdRequestFocus(int fd, const char** args, uint32_t numArgs); 86 binder_status_t cmdAbandonFocus(int fd, const char** args, uint32_t numArgs); 87 binder_status_t cmdRequestFocusWithMetaData(int fd, const char** args, uint32_t numArgs); 88 binder_status_t cmdAbandonFocusWithMetaData(int fd, const char** args, uint32_t numArgs); 89 binder_status_t cmdOnAudioDeviceGainsChanged(int fd, const char** args, uint32_t numArgs); 90 binder_status_t cmdOnAudioPortsChanged(int fd, const char** args, uint32_t numArgs); 91 92 binder_status_t parseMetaData(int fd, const std::string& metadataLiteral, 93 audiohalcommon::PlaybackTrackMetadata& trackMetadata); 94 binder_status_t parseAudioGains( 95 int fd, const std::string& stringGain, 96 std::vector<::aidl::android::media::audio::common::AudioGain>& gains); 97 binder_status_t parseSampleRates(int fd, const std::string& sampleRates, 98 std::vector<int32_t>& vecSampleRates); 99 100 binder_status_t dumpsys(int fd); 101 }; 102 103 } // namespace aidl::android::hardware::automotive::audiocontrol 104 105 #endif // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H 106