File: GStreamerIceTransportBackend.h

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/*
 *  Copyright (C) 2021-2022 Igalia S.L. All rights reserved.
 *  Copyright (C) 2022 Metrological Group B.V.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#pragma once

#if ENABLE(WEB_RTC) && USE(GSTREAMER_WEBRTC)

#include "GRefPtrGStreamer.h"
#include "RTCIceTransportBackend.h"
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>

namespace WebCore {
class GStreamerIceTransportBackend;
}

namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::GStreamerIceTransportBackend> : std::true_type { };
}

namespace WebCore {

class GStreamerIceTransportBackend final : public RTCIceTransportBackend, public CanMakeWeakPtr<GStreamerIceTransportBackend> {
    WTF_MAKE_TZONE_ALLOCATED(GStreamerIceTransportBackend);

public:
    explicit GStreamerIceTransportBackend(GRefPtr<GstWebRTCDTLSTransport>&&);
    ~GStreamerIceTransportBackend();

private:
    // RTCIceTransportBackend
    const void* backend() const final { return m_backend.get(); }

    void registerClient(RTCIceTransportBackendClient&) final;
    void unregisterClient() final;

    void stateChanged() const;
    void gatheringStateChanged() const;
    void iceTransportChanged();
    void selectedCandidatePairChanged();

    GRefPtr<GstWebRTCDTLSTransport> m_backend;
    GRefPtr<GstWebRTCICETransport> m_iceTransport;
    WeakPtr<RTCIceTransportBackendClient> m_client;
};

} // namespace WebCore

#endif // ENABLE(WEB_RTC) && USE(GSTREAMER_WEBRTC)