QObject::connect(&demoTimer, &QTimer::timeout,

                     this, &DataFormatPanel::demoTimerTimeout);

}

DataFormatPanel::~DataFormatPanel()

{

    delete ui;

}

// TODO: remove

bool DataFormatPanel::skipByteEnabled()

{

    return false;

}

unsigned DataFormatPanel::numOfChannels()

{

    return currentReader->numOfChannels();

}

// TODO: remove

void DataFormatPanel::requestSkipByte()

{

    skipByteRequested = true;

}

void DataFormatPanel::pause(bool enabled)

{

    currentReader->pause(enabled);

}

void DataFormatPanel::enableDemo(bool enabled)

{

    if (enabled)

    {

        demoTimer.start();

    }

    else

    {

        demoTimer.stop();

    }

}

void DataFormatPanel::spsTimerTimeout()

{

    // unsigned currentSps = _samplesPerSecond;

    // _samplesPerSecond = (sampleCount/_numOfChannels)/SPS_UPDATE_TIMEOUT;

    // if (currentSps != _samplesPerSecond)

    // {

    //     emit samplesPerSecondChanged(_samplesPerSecond);

    // }

    // sampleCount = 0;

}

void DataFormatPanel::demoTimerTimeout()

{

    const double period = 100;

    demoCount++;

    if (demoCount >= 100) demoCount = 0;

    if (!paused)

    {

        for (unsigned ci = 0; ci < currentReader->numOfChannels(); ci++)

        {

            // we are calculating the fourier components of square wave

            double value = 4*sin(2*M_PI*double((ci+1)*demoCount)/period)/((2*(ci+1))*M_PI);

            addChannelData(ci, &value, 1);

        }

        emit dataAdded();

    }

}

void DataFormatPanel::addChannelData(unsigned int channel,

                                     double* data, unsigned size)

{

    _channelMan->addChannelData(channel, data, size);

    sampleCount += size;

}

void DataFormatPanel::selectReader(AbstractReader* reader)

{

    currentReader->enable(false);

    reader->enable();

    // re-connect signals

    disconnect(currentReader, 0, this, 0);

    connect(reader, SIGNAL(dataAdded()), this, SIGNAL(dataAdded()));

    connect(reader, SIGNAL(numOfChannelsChanged(unsigned)),

            this, SIGNAL(numOfChannelsChanged(unsigned)));

    // switch the settings widget

    ui->horizontalLayout->removeWidget(currentReader->settingsWidget());

    currentReader->settingsWidget()->hide();

    ui->horizontalLayout->addWidget(reader->settingsWidget(), 1);

    reader->settingsWidget()->show();

    currentReader = reader;

}