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| .. | ||
| client | ||
| cutils | ||
| hardware | ||
| a2dp.c | ||
| a2dp.h | ||
| adapter.c | ||
| adapter.h | ||
| Android.mk | ||
| device.c | ||
| device.h | ||
| hal-av.c | ||
| hal-bluetooth.c | ||
| hal-hidhost.c | ||
| hal-ipc-api.txt | ||
| hal-ipc.c | ||
| hal-ipc.h | ||
| hal-log.h | ||
| hal-msg.h | ||
| hal-pan.c | ||
| hal-sock.c | ||
| hal.h | ||
| hid.c | ||
| hid.h | ||
| ipc.c | ||
| ipc.h | ||
| main.c | ||
| Makefile.am | ||
| README | ||
| socket.c | ||
| socket.h | ||
| system-emulator.c | ||
| utils.h | ||
BlueZ for Android ***************** Since Android 4.2 there exists a well standardized HAL interface that the Bluetooth stack is expected to provide and which enables the easy replacement of the stack of choice on Android. Android BlueZ is intended as a drop-in replacement to Android provided Bluetooth stack. More details about BlueZ for Android architecture and components can be found in android/hal-apc-api.txt file. =============================== Building and running on Android =============================== Build requirements ================== - GLib - Android 4.2 or later don't provide GLib and one must provide it in 'external/bluetooth/glib' folder of Android tree. Sample Android GLib port is available at https://code.google.com/p/android-bluez.glib/ - Bionic support - BlueZ requires signalfd and timerfd APIs to be provided by libc library. Currently only 'master' branch available at https://android.googlesource.com/platform/bionic provides all required functionality and running BlueZ on older branch requires backporting missing features. Sample Bionic for Android on Intel Architecture (Android-IA) with all required features backported is available at https://code.google.com/p/android-bluez.bionic/ Runtime requirements ==================== BlueZ HAL library requires 'bluetoothd' service to be available on Android system. This can be done by defining service in init.rc file of targeted board: service bluetoothd /system/bin/logwrapper /system/bin/bluetoothd class main group bluetooth net_admin disabled oneshot It is required that bluetooth user could start and stop bluetoothd service by setting 'ctl.start' or 'ctl.stop' property. This can be achieved by whitelisting bluetooth user and bluetoothd service in init source code. Required Android init system modifications can be found at https://code.google.com/p/android-bluez.system-core/ Downloading and building ======================== Building for Android requires full Android AOSP source tree. Sample Android-IA tree with all required components present is available at http://code.google.com/p/android-bluez/ Downloading: repo init -u https://code.google.com/p/android-bluez.manifest/ -m topics/bluez repo sync Build for Intel ultrabook: 'source build/envsetup.sh' 'lunch core_mesa-eng' 'make allimages -j8' After full build is done it is possible to rebuild only BlueZ: 'cd external/bluetooth/bluez/android/' 'mm' (or 'mm -B' to force rebuilding of all files) 'adb sync' to update target device. ============================= Building and running on Linux ============================= It is possible to build and test BlueZ for Android daemon on Linux (eg. PC). Simply follow instructions available at README file in BlueZ top directory. Android daemon binary is located at android/bluetoothd. See next section on how to test Android daemon on Linux. ============ Testing tool ============ BT HAL test tools located in android/haltest is provided for HAL level testing of both Android daemon and HAL library. Start it and type 'adapter init' in prompt to initialize HAL library. On Android required bluetoothd service will be started automatically. On Linux it is required to start android/bluetoothd manually before init command timeout. To deinitialize HAL library and stop daemon type 'adapter cleanup'. Type 'help' for more information. Tab completion is also supported.