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/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.io
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**
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****************************************************************************/
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#include "widget.h"
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#include <QtMultimedia/QAudioDeviceInfo>
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#include <QtMultimedia/QAudioInput>
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#include <QtCharts/QChartView>
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#include <QtCharts/QLineSeries>
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#include <QtCharts/QChart>
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#include <QtWidgets/QVBoxLayout>
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#include <QtCharts/QValueAxis>
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#include "xyseriesiodevice.h"
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QT_CHARTS_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->setTitleText("Samples");
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QValueAxis *axisY = new QValueAxis;
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axisY->setRange(-1, 1);
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axisY->setTitleText("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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