标签:android des style code ext http
Android provides a default Bluetooth stack, BlueDroid, that is divided into two layers: The Bluetooth Embedded System (BTE), which implements the core Bluetooth functionality and the Bluetooth Application Layer (BTA), which communicates with Android framework applications. A Bluetooth system service communicates with the Bluetooth stack through JNI and with applications through Binder IPC. The system service provides developers access to various Bluetooth profiles. The following diagram shows the general structure of the Bluetooth stack:
packages/apps/Bluetooth
, is packaged as an Android app and
implements the Bluetooth service and profiles at the Android framework
layer. This app calls into the HAL layer via JNI.packages/apps/Bluetooth/jni
. The JNI code
calls into the HAL layer and receives callbacks from the HAL when
certain Bluetooth operations occur, such as when devices are
discovered.hardware/libhardware/include/hardware/bluetooth.h
and
hardware/libhardware/include/hardware/bt_*.h
files.external/bluetooth/bluedroid
. The stack implements the
generic Bluetooth HAL as well as customizes it with extensions and
configuration changes.The Bluetooth HAL is located in the
hardware/libhardware/include/hardware/
directory and consists
of the following header files:
bluetooth.h
: Contains the HAL for the Bluetooth
hardware on the devicebt_av.h
: Contains the HAL for the advanced audio
profile.bt_hf.h
: Contains the HAL for the handsfree
profile.bt_hh.h
: Contains the HAL for the HID host profilebt_hl.h
: Contains the HAL for the health profilebt_pan.h
: Contains the HAL for the pan profilebt_sock.h
: Contains the HAL for the socket
profile.Keep in mind that your Bluetooth implementation is not constrained to
the features and profiles exposed in the HAL. You can find the default
implementation located in the BlueDroid Bluetooth stack in the
external/bluetooth/bluedroid
directory, which implements the
default HAL and also extra features and customizations.
If you are using the default BlueDroid stack, but want to make a few customizations, you can do the following things:
packages/apps/Bluetooth
), and add them to the BlueDroid
stack (external/bluetooth/bluedroid
).libbt-vendor
module. See the
vendor/broadcom/libbt-vendor
directory for an example.libbt-hci
module, which is mainly used for debug
tracing. See the external/bluetooth/hci
directory for an
example.http://source.android.com/devices/bluetooth.html
标签:android des style code ext http
原文地址:http://www.cnblogs.com/savagemorgan/p/3716853.html