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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "widget.h"
#include "xyseriesiodevice.h"
#include <QtMultimedia/QAudioDevice>
#include <QtMultimedia/QAudioInput>
#include <QtMultimedia/QAudioSource>
#include <QtCharts/QChartView>
#include <QtCharts/QLineSeries>
#include <QtCharts/QChart>
#include <QtCharts/QValueAxis>
#include <QtWidgets/QVBoxLayout>
QT_USE_NAMESPACE
Widget::Widget(const QAudioDevice &deviceInfo, QWidget *parent) :
QWidget(parent),
m_chart(new QChart),
m_series(new QLineSeries)
{
QChartView *chartView = new QChartView(m_chart);
chartView->setMinimumSize(800, 600);
m_chart->addSeries(m_series);
QValueAxis *axisX = new QValueAxis;
axisX->setRange(0, XYSeriesIODevice::sampleCount);
axisX->setLabelFormat("%g");
axisX->setTitleText("Samples");
QValueAxis *axisY = new QValueAxis;
axisY->setRange(-1, 1);
axisY->setTitleText("Audio level");
m_chart->addAxis(axisX, Qt::AlignBottom);
m_series->attachAxis(axisX);
m_chart->addAxis(axisY, Qt::AlignLeft);
m_series->attachAxis(axisY);
m_chart->legend()->hide();
m_chart->setTitle("Data from the microphone (" + deviceInfo.description() + ')');
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->addWidget(chartView);
m_audioInput = new QAudioInput(deviceInfo, this);
QAudioFormat formatAudio;
formatAudio.setSampleRate(8000);
formatAudio.setChannelCount(1);
formatAudio.setSampleFormat(QAudioFormat::UInt8);
m_audioSource = new QAudioSource(deviceInfo, formatAudio);
m_audioSource->setBufferSize(200);
m_device = new XYSeriesIODevice(m_series, this);
m_device->open(QIODevice::WriteOnly);
m_audioSource->start(m_device);
}
Widget::~Widget()
{
m_audioSource->stop();
m_device->close();
delete m_audioInput;
delete m_device;
}
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