widget.cpp - mozsearch

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// Copyright (C) 2023 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

#include "widget.h"

#include "xyseriesiodevice.h"

#include <QAudioDevice>

#include <QAudioInput>

#include <QAudioSource>

#include <QChart>

#include <QChartView>

#include <QLineSeries>

#include <QValueAxis>

#include <QVBoxLayout>

Widget::Widget(const QAudioDevice &deviceInfo, QWidget *parent)

    : QWidget(parent)

    , m_chart(new QChart)

    , m_series(new QLineSeries)

    auto chartView = new QChartView(m_chart);

    m_chart->addSeries(m_series);

    auto axisX = new QValueAxis;

    axisX->setRange(0, XYSeriesIODevice::sampleCount);

    axisX->setLabelFormat("%g");

    axisX->setTitleText("Samples");

    auto 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() + ')');

    auto 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;