qpipewire_cameradevicemonitor_p.h

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// Copyright (C) 2026 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 QPIPEWIRE_CAMERADEVICEMONITOR_P_H

#define QPIPEWIRE_CAMERADEVICEMONITOR_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/private/qpipewire_propertydict_p.h>

#include <QtMultimedia/private/qpipewire_spa_video_format_support_p.h>

#include <QtMultimedia/private/qpipewire_registry_support_p.h>

#include <QtMultimedia/private/qpipewire_support_p.h>

#include <QtMultimedia/private/qtmultimediaglobal_p.h>

#include <QtMultimedia/qcameradevice.h>

#include <QtCore/qmutex.h>

#include <QtCore/qobject.h>

#include <vector>

#include <map>

#include <optional>

QT_BEGIN_NAMESPACE

namespace QtPipeWire {

class Q_MULTIMEDIA_EXPORT QCameraDeviceMonitor : public QObject

    Q_OBJECT

public:

    QCameraDeviceMonitor();

    struct CameraNode

        ObjectId id;

        PwPropertyDict properties;

        PwPropertyDict deviceProperties; // of the parent device, empty if it has none

};

    std::vector<CameraNode> cameraNodes() const;

    QList<QCameraDevice> cameraDevices();

    std::optional<ObjectId> findCameraNode(QByteArrayView deviceId) const;

    // FIXME: improve type safety!

    std::optional<QByteArray> findTargetObject(QByteArrayView deviceId) const;

    // Called on the PipeWire event loop thread.

    void objectAdded(ObjectId, PipewireRegistryType, const spa_dict &properties);

    void objectRemoved(ObjectId);

Q_SIGNALS:

    void camerasChanged();

private:

    struct DeviceRecord

        PwPropertyDict properties;

};

    mutable QMutex m_mutex;

    std::map<ObjectId, CameraNode> m_nodes;

    std::map<ObjectId, DeviceRecord> m_devices;

    // Requires m_mutex.

    const PwPropertyDict *findDeviceProperties(const PwPropertyDict &nodeProperties) const;

};

} // namespace QtPipeWire

QT_END_NAMESPACE

#endif // QPIPEWIRE_CAMERADEVICEMONITOR_P_H