Android 4.2之後 藍芽結構與程式碼分布

Android Official Document
http://source.android.com/devices/bluetooth.html

http://blog.sina.com.cn/s/blog_69b5d2a50101f2ew.html

1. application framework
• 程式碼: framework/base/core/java/android/bluetooth/
2. Bluetooth System service
• 程式碼: packages/apps/Bluetooth/
3. JNI
• 程式碼: packages/apps/Bluetooth/jni/
4. HAL
• 你得實現這些接口來讓你的BT Hardware運作正常
• 程式碼的標頭檔:    
• hardware/libhardware/include/hardware/bluetooth.h
• hardware/libhardware/include/hardware/bt_*.h
5. BT Stack
• 4.2開始, 預設為BlueDroid
• 程式碼: external/bluetooth/bluedroid/
6. Vendor extension
• 為了追蹤添加自定義擴展和一個HCI層，創建一個libbt-vendor模組去指定