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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef AUDIOOUTPUT_H
#define AUDIOOUTPUT_H
#include <math.h>
#include <QAudioSink>
#include <QByteArray>
#include <QComboBox>
#include <QIODevice>
#include <QLabel>
#include <QMainWindow>
#include <QObject>
#include <QPushButton>
#include <QSlider>
#include <QTimer>
#include <QScopedPointer>
#include <QMediaDevices>
class Generator : public QIODevice
{
Q_OBJECT
public:
Generator(const QAudioFormat &format, qint64 durationUs, int sampleRate);
void start();
void stop();
qint64 readData(char *data, qint64 maxlen) override;
qint64 writeData(const char *data, qint64 len) override;
qint64 bytesAvailable() const override;
qint64 size() const override { return m_buffer.size(); }
private:
void generateData(const QAudioFormat &format, qint64 durationUs, int sampleRate);
private:
qint64 m_pos = 0;
QByteArray m_buffer;
};
class AudioTest : public QMainWindow
{
Q_OBJECT
public:
AudioTest();
~AudioTest();
private:
void initializeWindow();
void initializeAudio(const QAudioDevice &deviceInfo);
private:
QMediaDevices *m_devices = nullptr;
QTimer *m_pushTimer = nullptr;
// Owned by layout
QPushButton *m_modeButton = nullptr;
QPushButton *m_suspendResumeButton = nullptr;
QComboBox *m_deviceBox = nullptr;
QLabel *m_volumeLabel = nullptr;
QSlider *m_volumeSlider = nullptr;
QScopedPointer<Generator> m_generator;
QScopedPointer<QAudioSink> m_audioOutput;
bool m_pullMode = true;
private slots:
void toggleMode();
void toggleSuspendResume();
void deviceChanged(int index);
void volumeChanged(int);
void updateAudioDevices();
};
#endif // AUDIOOUTPUT_H
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