qtmobility/plugins/sensors/maemo6/maemo6sensorbase.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 23 Jun 2010 19:08:38 +0300
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Revision: 201023 Kit: 2010125
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "maemo6sensorbase.h"
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SensorManagerInterface* maemo6sensorbase::m_remoteSensorManager = 0;
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const float maemo6sensorbase::GRAVITY_EARTH = 9.80665;
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const float maemo6sensorbase::GRAVITY_EARTH_THOUSANDTH = 0.00980665;
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maemo6sensorbase::maemo6sensorbase(QSensor *sensor)
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    : QSensorBackend(sensor), m_sensorInterface(0)
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{
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    if (!m_remoteSensorManager)
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        m_remoteSensorManager = &SensorManagerInterface::instance();
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}
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maemo6sensorbase::~maemo6sensorbase()
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{
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    if (m_sensorInterface) {
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        stop();
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        QObject::disconnect(m_sensorInterface);
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        delete m_sensorInterface, m_sensorInterface = 0;
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    }
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}
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void maemo6sensorbase::start()
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{
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    if (m_sensorInterface) {
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        int dataRate = sensor()->dataRate();
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        if (dataRate > 0) {
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            int interval = 1000 / dataRate;
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            // for testing maximum speed
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            //interval = 1;
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            //dataRate = 1000;
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            qDebug() << "Setting data rate" << dataRate << "Hz (interval" << interval << "ms) for" << m_sensorInterface->id();
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            m_sensorInterface->setInterval(interval);
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        } else {
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            qDebug() << "Data rate in don't care mode (interval" << m_sensorInterface->interval() << "ms) for" << m_sensorInterface->id();
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        }
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        int returnCode = m_sensorInterface->start().error().type();
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        if (returnCode==0) return;
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        qWarning()<<"m_sensorInterface did not start, error code:"<<returnCode;
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    }
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    sensorStopped();
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}
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void maemo6sensorbase::stop()
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{
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    if (m_sensorInterface)
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        m_sensorInterface->stop();
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}