/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
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**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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****************************************************************************/

#include <QtCore>
#include <qorientationsensor.h>

QTM_USE_NAMESPACE

class OrientationSensorFilter : public QOrientationFilter
{
public:
    qtimestamp stamp;
    bool filter(QOrientationReading *reading)
    {
        int diff = ( reading->timestamp() - stamp );
        stamp = reading->timestamp();
        QString output;
        switch (reading->orientation()) {
            case QOrientationReading::TopUp:     output = "Top up   "; break;
            case QOrientationReading::TopDown:   output = "Top down "; break;
            case QOrientationReading::LeftUp:    output = "Left up  "; break;
            case QOrientationReading::RightUp:   output = "Right up "; break;
            case QOrientationReading::FaceUp:    output = "Face up  "; break;
            case QOrientationReading::FaceDown:  output = "Face down"; break;
            case QOrientationReading::Undefined: output = "Undefined"; break;
            default: output = "Invalid enum value";
        }
        QTextStream out(stdout);
        out << "Orientation: " << output
            << QString(" (%1 ms since last, %2 Hz)").arg(diff / 1000, 5).arg( 1000000.0 / diff, 4, 'f', 1) << endl;
        return false; // don't store the reading in the sensor
    }
};

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);
    QStringList args = app.arguments();
    int rate_place = args.indexOf("-r");
    int rate_val = 0;
    if (rate_place != -1)
        rate_val = args.at(rate_place + 1).toInt();
    QOrientationSensor sensor;
    sensor.connectToBackend();

    if (rate_val > 0) {
        sensor.setDataRate(rate_val);
    }
    OrientationSensorFilter filter;
    sensor.addFilter(&filter);
    sensor.start();
    if (!sensor.isActive()) {
        qWarning("Orientationsensor didn't start!");
        return 1;
    }

    return app.exec();
}
