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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "dummycommon.h"
#ifdef Q_OS_WINCE
#include <windows.h>
// WINCE has <time.h> but using clock() gives a link error because
// the function isn't actually implemented.
#else
#include <time.h>
#endif
dummycommon::dummycommon(QSensor *sensor)
: QSensorBackend(sensor)
, m_timerid(0)
{
}
void dummycommon::start()
{
if (m_timerid)
return;
int dataRate = sensor()->dataRate();
if (dataRate == 0) {
if (sensor()->availableDataRates().count())
// Use the first available rate when -1 is chosen
dataRate = sensor()->availableDataRates().first().first;
else
dataRate = 1;
}
int interval = 1000 / dataRate;
if (interval)
m_timerid = startTimer(interval);
}
void dummycommon::stop()
{
if (m_timerid) {
killTimer(m_timerid);
m_timerid = 0;
}
}
void dummycommon::timerEvent(QTimerEvent * /*event*/)
{
poll();
}
quint64 dummycommon::getTimestamp()
{
#ifdef Q_OS_WINCE
// This implementation is based on code found here:
// http://social.msdn.microsoft.com/Forums/en/vssmartdevicesnative/thread/74870c6c-76c5-454c-8533-812cfca585f8
HANDLE currentThread = GetCurrentThread();
FILETIME creationTime, exitTime, kernalTime, userTime;
GetThreadTimes(currentThread, &creationTime, &exitTime, &kernalTime, &userTime);
ULARGE_INTEGER uli;
uli.LowPart = userTime.dwLowDateTime;
uli.HighPart = userTime.dwHighDateTime;
ULONGLONG systemTimeInMS = uli.QuadPart/10000;
return static_cast<quint64>(systemTimeInMS);
#else
struct timespec tv;
int ok;
ok = clock_gettime(CLOCK_MONOTONIC, &tv);
Q_ASSERT(ok == 0);
quint64 result = (tv.tv_sec * 1000000ULL) + (tv.tv_nsec * 0.001); // scale to microseconds
return result;
#endif
}
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