下面介绍下基于Android 9的代码路径。
一、BT framework的代码路径
(1) Bluetooth apk
/packages/apps/Bluetooth
(2) Bt framework
/frameworks/base/services/core/java/com/android/server/BluetoothManagerService.java和BluetoothService.java
/frameworks/base/core/java/android/bluetooth/
(3) BT stack
/system/bt/
(4) Scan/TvSettings app
/frameworks/base/packages/SettingsLib/src/com/android/settingslib/bluetooth/BluetoothEventManager.java
/frameworks/base/packages/SettingsLib/src/com/android/settingslib/bluetooth/CachedBluetoothDeviceManager.java
/packages/apps/TvSettings/Settings/src/com/android/tv/settings/accessories/BluetoothDevicePairer.java
二、Audio framework的代码路径
(1) java code
/frameworks/base/media/java/android/media/
/frameworks/base/services/core/java/com/android/server/audio/
(2) jni
/frameworks/base/core/jni/
/frameworks/base/media/jni/
(3) c++
/frameworks/av/media/libaaudio/
/frameworks/av/media/libaudioclient/
/frameworks/av/media/libmedia/
/frameworks/av/media/audioserver/
/frameworks/av/services/audiopolicy/
/frameworks/av/services/audioflinger/
(4) 数据库里面的setting
/frameworks/base/core/java/android/provider/
(5) .h
/system/media/audio/include/system/
(6) hidl
/frameworks/av/media/libaudiohal/4.0/
(7) AAudio mmap
/frameworks/av/services/oboeservice/
(8) Netflix上层调节音量
/frameworks/av/include/media/VolumeShaper.h (只需build下AudioFlinger)
(9) Timecheck.cpp
/frameworks/av/media/libmedia/TimeCheck.cpp
(10) SystemServer
/frameworks/base/services/java/com/android/server/SystemServer.java
