@@ -23,13 +23,16 Widget::Widget(QWidget *parent) | |||
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23 | 23 | m_series = new QLineSeries; |
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24 | 24 | m_chart->addSeries(m_series); |
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25 | 25 | QValueAxis *axisX = new QValueAxis; |
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26 |
axisX->setRange(0, |
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26 | axisX->setRange(0, 2000); | |
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27 | axisX->setLabelFormat("%g"); | |
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28 | axisX->setTitle("Samples"); | |
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27 | 29 | QValueAxis *axisY = new QValueAxis; |
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28 |
axisY->setRange( |
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30 | axisY->setRange(-1, 1); | |
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31 | axisY->setTitle("Audio level"); | |
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29 | 32 | m_chart->setAxisX(axisX, m_series); |
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30 | 33 |
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31 | 34 | m_chart->legend()->hide(); |
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32 | m_chart->setTitle("Data from microphone"); | |
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35 | m_chart->setTitle("Data from the microphone"); | |
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33 | 36 | |
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34 | 37 | QVBoxLayout *mainLayout = new QVBoxLayout; |
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35 | 38 | mainLayout->addWidget(chartView); |
@@ -16,20 +16,21 qint64 XYSeriesIODevice::readData(char * data, qint64 maxSize) | |||
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16 | 16 | |
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17 | 17 | qint64 XYSeriesIODevice::writeData(const char * data, qint64 maxSize) |
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18 | 18 | { |
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19 |
qint64 range = |
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19 | qint64 range = 2000; | |
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20 | 20 | QList<QPointF> oldPoints = m_series->points(); |
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21 | 21 | QList<QPointF> points; |
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22 | int resolution = 4; | |
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22 | 23 | |
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23 | 24 | if (oldPoints.count() < range) { |
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24 | 25 | points = m_series->points(); |
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25 | 26 | } else { |
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26 |
for (int i = maxSize/ |
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27 |
points.append(QPointF(i - maxSize/ |
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27 | for (int i = maxSize/resolution; i < oldPoints.count(); i++) | |
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28 | points.append(QPointF(i - maxSize/resolution, oldPoints.at(i).y())); | |
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28 | 29 | } |
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29 | 30 | |
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30 | 31 | qint64 size = points.count(); |
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31 |
for (int k = 0; k < maxSize/ |
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32 |
points.append(QPointF(k + size, (quint8)data[ |
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32 | for (int k = 0; k < maxSize/resolution; k++) | |
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33 | points.append(QPointF(k + size, ((quint8)data[resolution * k] - 128)/128.0)); | |
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33 | 34 | |
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34 | 35 | m_series->replace(points); |
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35 | 36 | return maxSize; |
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