/****************************************************************************
**
** 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 "maemo6als.h"

char const * const maemo6als::id("maemo6.als");
bool maemo6als::m_initDone = false;

maemo6als::maemo6als(QSensor *sensor)
    : maemo6sensorbase(sensor)
{
    const QString sensorName = "alssensor";
    initSensor<ALSSensorChannelInterface>(sensorName, m_initDone);


    if (m_sensorInterface){
        if (!(QObject::connect(m_sensorInterface, SIGNAL(ALSChanged(const Unsigned&)),
                               this, SLOT(slotDataAvailable(const Unsigned&)))))
            qWarning() << "Unable to connect "<< sensorName;
    }
    else
        qWarning() << "Unable to initialize "<<sensorName;
    setReading<QAmbientLightReading>(&m_reading);
    // metadata
    addDataRate(10, 10); // 10 Hz
    addOutputRange(0, 5, 1);
    setDescription(QLatin1String("Ambient light intensity given as 5 pre-defined levels"));
}

void maemo6als::slotDataAvailable(const Unsigned& data)
{
    // Convert from integer to fixed levels
    // TODO: verify levels
    QAmbientLightReading::LightLevel level;
    int x = data.x();
    if (x < 0) {
        level = QAmbientLightReading::Undefined;
    } else if (x < 10) {
        level = QAmbientLightReading::Dark;
    } else if (x < 50) {
        level = QAmbientLightReading::Twilight;
    } else if (x < 100) {
        level = QAmbientLightReading::Light;
    } else if (x < 150) {
        level = QAmbientLightReading::Bright;
    } else {
        level = QAmbientLightReading::Sunny;
    }
    if (level != m_reading.lightLevel()) {
        m_reading.setLightLevel(level);
        m_reading.setTimestamp(data.UnsignedData().timestamp_);
        newReadingAvailable();
    }
}
