1. frameworks\base\media\java\android\media\AudioAttributes.java
2.packages/services/Car/service/res/values/attrs.xml
packages/services/Car/service/src/com/android/car/audio/CarAudioContext.java
packages/services/Car/service/src/com/android/car/audio/CarAudioZonesHelper.java
packages/services/Car/service/src/com/android/car/audio/CarDuckingUtils.java
packages/services/Car/service/src/com/android/car/audio/CarVolume.java
packages/services/Car/service/src/com/android/car/audio/FocusInteraction.java
3.hardware/qcom/audio-ar/configs/common_au/car_audio_configuration.xml
4.system/media/audio/include/system/audio-hal-enums.h
5.frameworks/av/media/libaudioclient/aidl/android/media/AudioUsage.aidl
frameworks/av/media/libaudioclient/AidlConversion.cpp
frameworks/av/services/audiopolicy/managerdefault/AudioPolicyManager.cpp