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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtBluetooth module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
package org.qtproject.qt5.android.bluetooth;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.content.Context;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothGattServer;
import android.bluetooth.BluetoothGattServerCallback;
import android.bluetooth.BluetoothManager;
import android.bluetooth.le.AdvertiseCallback;
import android.bluetooth.le.AdvertiseData;
import android.bluetooth.le.AdvertiseData.Builder;
import android.bluetooth.le.AdvertiseSettings;
import android.bluetooth.le.BluetoothLeAdvertiser;
import android.os.ParcelUuid;
import android.util.Log;
import java.util.UUID;
public class QtBluetoothLEServer {
private static final String TAG = "QtBluetoothGattServer";
/* Pointer to the Qt object that "owns" the Java object */
@SuppressWarnings({"CanBeFinal", "WeakerAccess"})
long qtObject = 0;
@SuppressWarnings("WeakerAccess")
private Context qtContext = null;
// Bluetooth members
private final BluetoothAdapter mBluetoothAdapter;
private BluetoothGattServer mGattServer = null;
private BluetoothLeAdvertiser mLeAdvertiser = null;
public QtBluetoothLEServer(Context context)
{
qtContext = context;
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBluetoothAdapter == null || qtContext == null) {
Log.w(TAG, "Missing Bluetooth adapter or Qt context. Peripheral role disabled.");
return;
}
BluetoothManager manager = (BluetoothManager) qtContext.getSystemService(Context.BLUETOOTH_SERVICE);
if (manager == null) {
Log.w(TAG, "Bluetooth service not available.");
return;
}
mGattServer = manager.openGattServer(qtContext, mGattServerListener);
mLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();
if (!mBluetoothAdapter.isMultipleAdvertisementSupported())
Log.w(TAG, "Device does not support Bluetooth Low Energy advertisement.");
else
Log.w(TAG, "Let's do BTLE Peripheral.");
}
/*
* Call back handler for the Gatt Server.
*/
private BluetoothGattServerCallback mGattServerListener = new BluetoothGattServerCallback()
{
@Override
public void onConnectionStateChange(BluetoothDevice device, int status, int newState) {
super.onConnectionStateChange(device, status, newState);
}
@Override
public void onServiceAdded(int status, BluetoothGattService service) {
super.onServiceAdded(status, service);
}
@Override
public void onCharacteristicReadRequest(BluetoothDevice device, int requestId, int offset, BluetoothGattCharacteristic characteristic) {
super.onCharacteristicReadRequest(device, requestId, offset, characteristic);
}
@Override
public void onCharacteristicWriteRequest(BluetoothDevice device, int requestId, BluetoothGattCharacteristic characteristic, boolean preparedWrite, boolean responseNeeded, int offset, byte[] value) {
super.onCharacteristicWriteRequest(device, requestId, characteristic, preparedWrite, responseNeeded, offset, value);
}
@Override
public void onDescriptorReadRequest(BluetoothDevice device, int requestId, int offset, BluetoothGattDescriptor descriptor) {
super.onDescriptorReadRequest(device, requestId, offset, descriptor);
}
@Override
public void onDescriptorWriteRequest(BluetoothDevice device, int requestId, BluetoothGattDescriptor descriptor, boolean preparedWrite, boolean responseNeeded, int offset, byte[] value) {
super.onDescriptorWriteRequest(device, requestId, descriptor, preparedWrite, responseNeeded, offset, value);
}
@Override
public void onExecuteWrite(BluetoothDevice device, int requestId, boolean execute) {
super.onExecuteWrite(device, requestId, execute);
}
@Override
public void onNotificationSent(BluetoothDevice device, int status) {
super.onNotificationSent(device, status);
}
// MTU change disabled since it requires API level 22. Right now we only enforce lvl 21
// @Override
// public void onMtuChanged(BluetoothDevice device, int mtu) {
// super.onMtuChanged(device, mtu);
// }
};
public void disconnect()
{
if (mGattServer == null)
return;
mGattServer.close();
}
public void startAdvertising()
{
if (mLeAdvertiser == null)
return;
// TODO for now everything hardcoded to get basic working frame
AdvertiseData.Builder dataBuilder = new AdvertiseData.Builder();
dataBuilder.setIncludeDeviceName(true);
dataBuilder.setIncludeTxPowerLevel(false);
// randomly chosen UUID below
dataBuilder.addServiceUuid(ParcelUuid.fromString("e8e10f95-1a70-4b27-9ccf-02010264e9c8"));
AdvertiseSettings.Builder settingsBuilder = new AdvertiseSettings.Builder();
settingsBuilder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED);
settingsBuilder.setConnectable(true); // prevents beacon mode
settingsBuilder.setTimeout(0);
settingsBuilder.setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_MEDIUM);
mLeAdvertiser.startAdvertising(settingsBuilder.build(), dataBuilder.build(), mAdvertiseListener);
}
public void stopAdvertising()
{
if (mLeAdvertiser == null)
return;
mLeAdvertiser.stopAdvertising(mAdvertiseListener);
}
/*
* Call back handler for Advertisement requests.
*/
private AdvertiseCallback mAdvertiseListener = new AdvertiseCallback()
{
@Override
public void onStartSuccess(AdvertiseSettings settingsInEffect) {
super.onStartSuccess(settingsInEffect);
}
@Override
public void onStartFailure(int errorCode) {
super.onStartFailure(errorCode);
}
};
}
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