/****************************************************************************
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** Copyright (C) 2012 Research In Motion
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** This file is part of the QtSensors module of the Qt Toolkit.
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#include "bbaccelerometer.h"

BbAccelerometer::BbAccelerometer(QSensor *sensor)
    : BbSensorBackend<QAccelerometerReading>(devicePath(), SENSOR_TYPE_ACCELEROMETER, sensor)
{
    setDescription(QLatin1String("X, Y, and Z axes accelerations in m/s^2"));

    QAccelerometer * const accelerometer = qobject_cast<QAccelerometer *>(sensor);
    if (accelerometer) {
        connect(accelerometer, SIGNAL(accelerationModeChanged(AccelerationMode)),
                this, SLOT(applyAccelerationMode()));
    }
}

bool BbAccelerometer::updateReadingFromEvent(const sensor_event_t &event, QAccelerometerReading *reading)
{
    float x = event.motion.dsp.x;
    float y = event.motion.dsp.y;
    float z = event.motion.dsp.z;
    remapAxes(&x, &y, &z);
    reading->setX(x);
    reading->setY(y);
    reading->setZ(z);
    return true;
}

void BbAccelerometer::start()
{
    applyAccelerationMode();
    BbSensorBackend<QAccelerometerReading>::start();
}

QString BbAccelerometer::devicePath()
{
    return QLatin1String("/dev/sensor/accel");
}

void BbAccelerometer::applyAccelerationMode()
{
    const QAccelerometer * const accelerometer = qobject_cast<QAccelerometer *>(sensor());
    if (accelerometer) {
        QString fileName;
        sensor_type_e sensorType;
        switch (accelerometer->accelerationMode()) {
        case QAccelerometer::Gravity:
            fileName = QLatin1String("/dev/sensor/gravity");
            sensorType = SENSOR_TYPE_GRAVITY;
            break;
        case QAccelerometer::User:
            fileName = QLatin1String("/dev/sensor/linAccel");
            sensorType = SENSOR_TYPE_LINEAR_ACCEL;
            break;
        default:
        case QAccelerometer::Combined:
            fileName = devicePath();
            sensorType = SENSOR_TYPE_ACCELEROMETER;
            break;
        }

        setDevice(fileName, sensorType);
    }
}