qpipewire_audiocontextmanager_p.h

Enable keyboard shortcuts

// Copyright (C) 2025 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_AUDIOCONTEXTMANAGER_P_H

#define QPIPEWIRE_AUDIOCONTEXTMANAGER_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_audiodevicemonitor_p.h>

#include <QtMultimedia/private/qpipewire_registry_support_p.h>

#include <QtMultimedia/private/qpipewire_support_p.h>

#include <QtMultimedia/private/qpipewire_instance_p.h>

#include <QtCore/qglobal.h>

#include <pipewire/pipewire.h>

QT_BEGIN_NAMESPACE

namespace QtPipeWire {

struct QPipewireAudioStream;

class QAudioContextManager

public:

    QAudioContextManager();

    ~QAudioContextManager();

    static bool minimumRequirementMet();

    static QAudioContextManager *instance();

    bool isConnected() const;

    template <typename Closure>

    static auto withEventLoopLock(Closure &&c)

        QAudioContextManager *self = instance();

        return self->m_pwInstance->runWithEventLoopLock(std::forward<Closure>(c));

    static QAudioDeviceMonitor &deviceMonitor();

    static bool isInPwThreadLoop();

    static pw_loop *getEventLoop();

    PwNodeHandle bindNode(ObjectId);

    PwMetadataHandle bindMetadata(ObjectId);

    void syncRegistry();

    void registerStreamReference(std::shared_ptr<QPipewireAudioStream>);

    void unregisterStreamReference(const std::shared_ptr<QPipewireAudioStream> &);

    const PwCoreConnectionHandle &coreConnection() const;

private:

    const std::shared_ptr<QPipeWireInstance> m_pwInstance;

    // pw_core connection

    PwCoreConnectionHandle m_coreConnection;

    // device monitor

    PwRegistryHandle m_registry;

    spa_hook m_registryListener{};

    std::unique_ptr<QAudioDeviceMonitor> m_deviceMonitor;

    void startDeviceMonitor();

    void stopDeviceMonitor();

    static void objectAddedCb(void *data, uint32_t id, uint32_t permissions, const char *type,

                              uint32_t version, const struct spa_dict *props);

    static void objectRemovedCb(void *data, uint32_t id);

    void objectAdded(ObjectId id, uint32_t permissions, PipewireRegistryType, uint32_t version,

                     const spa_dict &props);

    void objectRemoved(ObjectId id);

    // default metadata object

    void startListenDefaultMetadataObject(ObjectId, uint32_t version);

    void stopListenDefaultMetadataObject();

    struct MetadataRecord

        const char *key;

        const char *type;

        const char *value;

};

    int handleDefaultMetadataObjectEvent(ObjectId subject, const MetadataRecord &);

    PwMetadataHandle m_defaultMetadataObject;

    spa_hook m_defaultMetadataObjectListener{};

    QMutex m_activeStreamMutex;

    std::set<std::shared_ptr<QPipewireAudioStream>> m_activeStreams;

    void stopActiveStreams();

};

} // namespace QtPipeWire

QT_END_NAMESPACE

#endif // QPIPEWIRE_AUDIOCONTEXTMANAGER_P_H