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powersync-core/libguh/bluetooth/bluetoothlowenergymanager.cpp
2019-04-02 01:02:45 +02:00

145 lines
6.1 KiB
C++

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* Copyright (C) 2017 Simon Stürz <simon.stuerz@guh.io> *
* *
* This file is part of guh. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2.1 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; If not, see *
* <http://www.gnu.org/licenses/>. *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "bluetoothlowenergymanager.h"
#include "loggingcategories.h"
bool BluetoothLowEnergyManager::discoverDevices(QPointer<QObject> caller, const QString &callbackMethod)
{
if (!available()) {
qCWarning(dcHardware()) << name() << "is not avilable.";
return false;
}
if (!enabled()) {
qCWarning(dcHardware()) << name() << "is not enabled.";
return false;
}
if (m_timer->isActive()) {
qCWarning(dcHardware()) << name() << "discovery already running.";
return false;
}
m_discoveredDevices.clear();
m_currentReply.caller = caller;
m_currentReply.callbackMethod = callbackMethod;
// Start discovery on all adapters
qCDebug(dcHardware()) << name() << "Start bluetooth discovery";
foreach (QBluetoothDeviceDiscoveryAgent *discoveryAgent, m_bluetoothDiscoveryAgents) {
discoveryAgent->start();
}
return true;
}
BluetoothLowEnergyManager::BluetoothLowEnergyManager(QObject *parent) :
HardwareResource(HardwareResource::TypeBluetoothLE, "Bluetooth LE manager", parent)
{
// Check which bluetooth adapter are available
QList<QBluetoothHostInfo> bluetoothAdapters = QBluetoothLocalDevice::allDevices();
if (bluetoothAdapters.isEmpty()) {
qCWarning(dcHardware()) << name() << "No bluetooth adapter found. Resource not available.";
setAvailable(false);
return;
}
// Create a scanner for each adapter
foreach (const QBluetoothHostInfo &hostInfo, bluetoothAdapters) {
qCDebug(dcHardware()) << name() << "Using adapter:" << hostInfo.name() << hostInfo.address().toString();
QBluetoothLocalDevice localDevice(hostInfo.address());
localDevice.powerOn();
localDevice.setHostMode(QBluetoothLocalDevice::HostDiscoverable);
QBluetoothDeviceDiscoveryAgent *discoveryAgent = new QBluetoothDeviceDiscoveryAgent(hostInfo.address(), this);
connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &BluetoothLowEnergyManager::onDeviceDiscovered);
connect(discoveryAgent, SIGNAL(error(QBluetoothDeviceDiscoveryAgent::Error)), this, SLOT(onDiscoveryError(QBluetoothDeviceDiscoveryAgent::Error)));
m_bluetoothDiscoveryAgents.append(discoveryAgent);
}
// Discovery timer
m_timer = new QTimer(this);
m_timer->setSingleShot(true);
m_timer->setInterval(5000);
connect(m_timer, &QTimer::timeout, this, &BluetoothLowEnergyManager::discoveryTimeout);
qCDebug(dcHardware()) << "-->" << name() << "created successfully.";
setAvailable(true);
}
void BluetoothLowEnergyManager::discoveryTimeout()
{
// Start discovery on all adapters
qCDebug(dcHardware()) << name() << "Stop bluetooth discovery";
foreach (QBluetoothDeviceDiscoveryAgent *discoveryAgent, m_bluetoothDiscoveryAgents) {
discoveryAgent->stop();
}
qCDebug(dcHardware()) << name() << "Discovery finished. Found"<< m_discoveredDevices.count() << "Bluetooth devices.";
if (m_currentReply.caller.isNull()) {
qCWarning(dcHardware()) << name() << "The reciver of the discovery request does not exist any more.";
} else {
// Invoke the method containing the discovered devicelist
// FIXME: check the callback method paramters during compililation
QMetaObject::invokeMethod(m_currentReply.caller.data(), m_currentReply.callbackMethod.toLatin1().data(), Q_ARG(QList<QBluetoothDeviceInfo>, m_discoveredDevices));
}
}
void BluetoothLowEnergyManager::onDeviceDiscovered(const QBluetoothDeviceInfo &deviceInfo)
{
// Add the device to the list if not already added
bool alreadyAdded = false;
foreach (const QBluetoothDeviceInfo &device, m_discoveredDevices) {
if (device.address() == deviceInfo.address()) {
alreadyAdded = true;
}
}
if (!alreadyAdded) {
qCDebug(dcHardware()) << name() << "device discovered" << deviceInfo.name() <<deviceInfo.address().toString();
m_discoveredDevices.append(deviceInfo);
}
}
void BluetoothLowEnergyManager::onDiscoveryError(const QBluetoothDeviceDiscoveryAgent::Error &error)
{
QBluetoothDeviceDiscoveryAgent *discoveryAgent = static_cast<QBluetoothDeviceDiscoveryAgent *>(sender());
qCWarning(dcHardware()) << name() << "Discovery error:" << error << discoveryAgent->errorString();
}
bool BluetoothLowEnergyManager::enable()
{
// TODO: enable all devices and trigger reconnect
setEnabled(true);
return true;
}
bool BluetoothLowEnergyManager::disable()
{
// TODO: disable reconnect and disconnect all devices
setEnabled(false);
return true;
}