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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "winrtaccelerometer.h"
#include "winrtcommon.h"
#include <QtSensors/QAccelerometerReading>
#include <functional>
#include <wrl.h>
#include <windows.devices.sensors.h>
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Devices::Sensors;
typedef ITypedEventHandler<Accelerometer *, AccelerometerReadingChangedEventArgs *> AccelerometerReadingHandler;
QT_USE_NAMESPACE
#define GRAVITY_EARTH_MS2 9.80665
class WinRtAccelerometerPrivate
{
public:
WinRtAccelerometerPrivate(WinRtAccelerometer *p)
: minimumReportInterval(0), q(p)
{
token.value = 0;
}
QAccelerometerReading reading;
ComPtr<IAccelerometer> sensor;
EventRegistrationToken token;
quint32 minimumReportInterval;
HRESULT readingChanged(IAccelerometer *, IAccelerometerReadingChangedEventArgs *args)
{
ComPtr<IAccelerometerReading> value;
HRESULT hr = args->get_Reading(&value);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Failed to get accelerometer reading" << qt_error_string(hr);
return hr;
}
DOUBLE x;
hr = value->get_AccelerationX(&x);
if (FAILED(hr))
qCWarning(lcWinRtSensors) << "Failed to get acceleration X" << qt_error_string(hr);
DOUBLE y;
hr = value->get_AccelerationY(&y);
if (FAILED(hr))
qCWarning(lcWinRtSensors) << "Failed to get acceleration Y" << qt_error_string(hr);
DOUBLE z;
hr = value->get_AccelerationZ(&z);
if (FAILED(hr))
qCWarning(lcWinRtSensors) << "Failed to get acceleration Z" << qt_error_string(hr);
DateTime dateTime;
hr = value->get_Timestamp(&dateTime);
if (FAILED(hr))
qCWarning(lcWinRtSensors) << "Failed to get acceleration timestamp" << qt_error_string(hr);
// The reading is in G force, so convert to m/s/s
reading.setX(x * GRAVITY_EARTH_MS2);
reading.setY(y * GRAVITY_EARTH_MS2);
reading.setZ(z * GRAVITY_EARTH_MS2);
reading.setTimestamp(dateTimeToMsSinceEpoch(dateTime));
q->newReadingAvailable();
return S_OK;
}
private:
WinRtAccelerometer *q;
};
WinRtAccelerometer::WinRtAccelerometer(QSensor *sensor)
: QSensorBackend(sensor), d_ptr(new WinRtAccelerometerPrivate(this))
{
Q_D(WinRtAccelerometer);
HStringReference classId(RuntimeClass_Windows_Devices_Sensors_Accelerometer);
ComPtr<IAccelerometerStatics> factory;
HRESULT hr = RoGetActivationFactory(classId.Get(), IID_PPV_ARGS(&factory));
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to initialize accelerometer factory."
<< qt_error_string(hr);
sensorError(hr);
return;
}
hr = factory->GetDefault(&d->sensor);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to get default accelerometer."
<< qt_error_string(hr);
sensorError(hr);
return;
}
if (!d->sensor) {
qCWarning(lcWinRtSensors) << "Default accelerometer was not found on the system.";
return;
}
hr = d->sensor->get_MinimumReportInterval(&d->minimumReportInterval);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to get the minimum report interval."
<< qt_error_string(hr);
sensorError(hr);
return;
}
addDataRate(1, 1000 / d->minimumReportInterval); // dataRate in Hz
sensor->setDataRate(1);
setReading<QAccelerometerReading>(&d->reading);
}
WinRtAccelerometer::~WinRtAccelerometer()
{
}
void WinRtAccelerometer::start()
{
Q_D(WinRtAccelerometer);
if (!d->sensor)
return;
if (d->token.value)
return;
ComPtr<AccelerometerReadingHandler> callback =
Callback<AccelerometerReadingHandler>(d, &WinRtAccelerometerPrivate::readingChanged);
HRESULT hr = d->sensor->add_ReadingChanged(callback.Get(), &d->token);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to attach to reading changed event."
<< qt_error_string(hr);
sensorError(hr);
return;
}
int dataRate = sensor()->dataRate();
if (!dataRate)
return;
quint32 reportInterval = qMax(d->minimumReportInterval, quint32(1000/dataRate));
hr = d->sensor->put_ReportInterval(reportInterval);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to attach to set report interval."
<< qt_error_string(hr);
sensorError(hr);
}
}
void WinRtAccelerometer::stop()
{
Q_D(WinRtAccelerometer);
if (!d->sensor)
return;
if (!d->token.value)
return;
HRESULT hr = d->sensor->remove_ReadingChanged(d->token);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to detach from reading changed event."
<< qt_error_string(hr);
sensorError(hr);
return;
}
hr = d->sensor->put_ReportInterval(0);
if (FAILED(hr)) {
qCWarning(lcWinRtSensors) << "Unable to reset report interval."
<< qt_error_string(hr);
sensorError(hr);
return;
}
d->token.value = 0;
}
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