qcoreaudioaggregatedevice_p.h

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// Copyright (C) 2026 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#ifndef QCOREAUDIOAGGREGATEDEVICE_P_H

#define QCOREAUDIOAGGREGATEDEVICE_P_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/qaudiodevice.h>

#include <QtCore/qstring.h>

#include <chrono>

#include <cstdint>

#include <memory>

#include <optional>

QT_BEGIN_NAMESPACE

// Test helper: creates a CoreAudio aggregate device wrapping the system default device, and

// destroys it on request. Destroying the aggregate device looks like an unplugged device to

// QtMultimedia, without needing any hardware to be unplugged.

class QCoreAudioAggregateDevice

public:

    enum class Direction : uint8_t {

        Output,

        Input,

};

    static std::unique_ptr<QCoreAudioAggregateDevice> create(Direction);

    Q_DISABLE_COPY_MOVE(QCoreAudioAggregateDevice)

    ~QCoreAudioAggregateDevice();

    // Polls QMediaDevices until the aggregate shows up. Nullopt on timeout.

    std::optional<QAudioDevice> waitForQtDevice(std::chrono::milliseconds timeout) const;

    bool destroyAndWaitForDisconnectNotification(std::chrono::milliseconds timeout);

private:

    struct Private;

    explicit QCoreAudioAggregateDevice(std::unique_ptr<Private>);

    std::unique_ptr<Private> d;

};

QT_END_NAMESPACE

#endif // QCOREAUDIOAGGREGATEDEVICE_P_H