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#include "widget.h"
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#include <QAudioDeviceInfo>
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#include <QAudioInput>
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#include <QChartView>
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#include <QLineSeries>
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#include <QChart>
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#include <QVBoxLayout>
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#include <QValueAxis>
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#include "xyseriesiodevice.h"
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QTCOMMERCIALCHART_USE_NAMESPACE
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Widget::Widget(QWidget *parent)
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: QWidget(parent),
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m_device(0),
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m_chart(0),
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m_series(0),
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m_audioInput(0)
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{
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m_chart = new QChart;
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QChartView *chartView = new QChartView(m_chart);
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chartView->setMinimumSize(800, 600);
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m_series = new QLineSeries;
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m_chart->addSeries(m_series);
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QValueAxis *axisX = new QValueAxis;
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axisX->setRange(0, 2000);
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axisX->setLabelFormat("%g");
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axisX->setTitle("Samples");
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QValueAxis *axisY = new QValueAxis;
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axisY->setRange(-1, 1);
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axisY->setTitle("Audio level");
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m_chart->setAxisX(axisX, m_series);
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m_chart->setAxisY(axisY, m_series);
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m_chart->legend()->hide();
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m_chart->setTitle("Data from the microphone");
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QVBoxLayout *mainLayout = new QVBoxLayout;
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mainLayout->addWidget(chartView);
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setLayout(mainLayout);
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QAudioFormat formatAudio;
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formatAudio.setSampleRate(8000);
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formatAudio.setChannelCount(1);
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formatAudio.setSampleSize(8);
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formatAudio.setCodec("audio/pcm");
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formatAudio.setByteOrder(QAudioFormat::LittleEndian);
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formatAudio.setSampleType(QAudioFormat::UnSignedInt);
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QAudioDeviceInfo inputDevices = QAudioDeviceInfo::defaultInputDevice();
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m_audioInput = new QAudioInput(inputDevices,formatAudio, this);
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m_device = new XYSeriesIODevice(m_series, this);
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m_device->open(QIODevice::WriteOnly);
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m_audioInput->start(m_device);
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}
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Widget::~Widget()
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{
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m_audioInput->stop();
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m_device->close();
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}
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