qffmpegaudioinput_p.h

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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QFFMPEGAUDIOINPUT_H
#define QFFMPEGAUDIOINPUT_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtMultimedia/qaudioinput.h>
#include <QtMultimedia/private/qplatformaudioinput_p.h>
#include <QtMultimedia/private/qplatformaudiobufferinput_p.h>
#include <QtFFmpegMediaPluginImpl/private/qffmpegthread_p.h>
 
QT_BEGIN_NAMESPACE
 
namespace QFFmpeg {
class AudioSourceIO;
} // namespace QFFmpeg
 
constexpr int DefaultAudioInputBufferSize = 4096;
 
class QFFmpegAudioInput : public QAudioBufferSource, public QPlatformAudioInput
{
    // for qobject_cast
    Q_OBJECT
public:
    explicit QFFmpegAudioInput(QAudioInput *qq);
    ~QFFmpegAudioInput() override;
 
    void setAudioDevice(const QAudioDevice &/*device*/) override;
    void setMuted(bool /*muted*/) override;
    void setVolume(float /*volume*/) override;
 
    void setBufferSize(int bufferSize);
 
    int bufferSize() const;
 
protected:
    // ensures the underlying audio source is run if
    // the signal newAudioBuffer is connected
    void connectNotify(const QMetaMethod &signal) override;
 
    // postponly ensures that the underlying audio source is not run
    // if the signal newAudioBuffer is not connacted to any slot.
    void disconnectNotify(const QMetaMethod &signal) override;
 
private:
    QFFmpeg::AudioSourceIO *m_audioIO = nullptr;
    std::unique_ptr<QThread> m_inputThread;
};
 
QT_END_NAMESPACE
 
 
#endif // QPLATFORMAUDIOINPUT_H