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