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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Enterprise Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "widget.h"
#include <QtMultimedia/QAudioDeviceInfo>
#include <QtMultimedia/QAudioInput>
#include <QtCharts/QChartView>
#include <QtCharts/QLineSeries>
#include <QtCharts/QChart>
#include <QtWidgets/QVBoxLayout>
#include <QtCharts/QValueAxis>
#include "xyseriesiodevice.h"
QT_CHARTS_USE_NAMESPACE
Widget::Widget(QWidget *parent)
: QWidget(parent),
m_device(0),
m_chart(0),
m_series(0),
m_audioInput(0)
{
m_chart = new QChart;
QChartView *chartView = new QChartView(m_chart);
chartView->setMinimumSize(800, 600);
m_series = new QLineSeries;
m_chart->addSeries(m_series);
QValueAxis *axisX = new QValueAxis;
axisX->setRange(0, 2000);
axisX->setLabelFormat("%g");
axisX->setTitleText("Samples");
QValueAxis *axisY = new QValueAxis;
axisY->setRange(-1, 1);
axisY->setTitleText("Audio level");
m_chart->setAxisX(axisX, m_series);
m_chart->setAxisY(axisY, m_series);
m_chart->legend()->hide();
m_chart->setTitle("Data from the microphone");
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(chartView);
setLayout(mainLayout);
QAudioFormat formatAudio;
formatAudio.setSampleRate(8000);
formatAudio.setChannelCount(1);
formatAudio.setSampleSize(8);
formatAudio.setCodec("audio/pcm");
formatAudio.setByteOrder(QAudioFormat::LittleEndian);
formatAudio.setSampleType(QAudioFormat::UnSignedInt);
QAudioDeviceInfo inputDevices = QAudioDeviceInfo::defaultInputDevice();
m_audioInput = new QAudioInput(inputDevices,formatAudio, this);
m_device = new XYSeriesIODevice(m_series, this);
m_device->open(QIODevice::WriteOnly);
m_audioInput->start(m_device);
}
Widget::~Widget()
{
m_audioInput->stop();
m_device->close();
}
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