MediaEndpointPeerConnection.h   [plain text]

/*
 * Copyright (C) 2015, 2016 Ericsson AB. All rights reserved.
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 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    in the documentation and/or other materials provided with the
 *    distribution.
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 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#ifndef MediaEndpointPeerConnection_h
#define MediaEndpointPeerConnection_h

#if ENABLE(WEB_RTC)

#include "MediaEndpoint.h"
#include "MediaEndpointSessionDescription.h"
#include "NotImplemented.h"
#include "PeerConnectionBackend.h"
#include <wtf/Function.h>
#include <wtf/RefPtr.h>

namespace WebCore {

class MediaStream;
class MediaStreamTrack;
class PeerMediaDescription;
class SDPProcessor;

typedef Vector<RefPtr<PeerMediaDescription>> MediaDescriptionVector;
typedef Vector<RefPtr<RTCRtpSender>> RtpSenderVector;
typedef Vector<RefPtr<RTCRtpTransceiver>> RtpTransceiverVector;

class MediaEndpointPeerConnection : public PeerConnectionBackend, public MediaEndpointClient {
public:
    MediaEndpointPeerConnection(PeerConnectionBackendClient*);

    void createOffer(RTCOfferOptions&, PeerConnection::SessionDescriptionPromise&&) override;
    void createAnswer(RTCAnswerOptions&, PeerConnection::SessionDescriptionPromise&&) override;

    void setLocalDescription(RTCSessionDescription&, PeerConnection::VoidPromise&&) override;
    RefPtr<RTCSessionDescription> localDescription() const override;
    RefPtr<RTCSessionDescription> currentLocalDescription() const override;
    RefPtr<RTCSessionDescription> pendingLocalDescription() const override;

    void setRemoteDescription(RTCSessionDescription&, PeerConnection::VoidPromise&&) override;
    RefPtr<RTCSessionDescription> remoteDescription() const override;
    RefPtr<RTCSessionDescription> currentRemoteDescription() const override;
    RefPtr<RTCSessionDescription> pendingRemoteDescription() const override;

    void setConfiguration(RTCConfiguration&) override;
    void addIceCandidate(RTCIceCandidate&, PeerConnection::VoidPromise&&) override;

    void getStats(MediaStreamTrack*, PeerConnection::StatsPromise&&) override;

    Vector<RefPtr<MediaStream>> getRemoteStreams() const override;

    RefPtr<RTCRtpReceiver> createReceiver(const String& transceiverMid, const String& trackKind, const String& trackId) override;
    void replaceTrack(RTCRtpSender&, RefPtr<MediaStreamTrack>&&, PeerConnection::VoidPromise&&) override;

    void stop() override;

    bool isNegotiationNeeded() const override { return m_negotiationNeeded; };
    void markAsNeedingNegotiation();
    void clearNegotiationNeededState() override { m_negotiationNeeded = false; };

private:
    void runTask(Function<void ()>&&);
    void startRunningTasks();

    void createOfferTask(RTCOfferOptions&, PeerConnection::SessionDescriptionPromise&);
    void createAnswerTask(RTCAnswerOptions&, PeerConnection::SessionDescriptionPromise&);

    void setLocalDescriptionTask(RefPtr<RTCSessionDescription>&&, PeerConnection::VoidPromise&);
    void setRemoteDescriptionTask(RefPtr<RTCSessionDescription>&&, PeerConnection::VoidPromise&);

    void addIceCandidateTask(RTCIceCandidate&, PeerConnection::VoidPromise&);

    void replaceTrackTask(RTCRtpSender&, const String& mid, RefPtr<MediaStreamTrack>&&, PeerConnection::VoidPromise&);

    bool localDescriptionTypeValidForState(RTCSessionDescription::SdpType) const;
    bool remoteDescriptionTypeValidForState(RTCSessionDescription::SdpType) const;

    MediaEndpointSessionDescription* internalLocalDescription() const;
    MediaEndpointSessionDescription* internalRemoteDescription() const;
    RefPtr<RTCSessionDescription> createRTCSessionDescription(MediaEndpointSessionDescription*) const;

    // MediaEndpointClient
    void gotDtlsFingerprint(const String& fingerprint, const String& fingerprintFunction) override;
    void gotIceCandidate(unsigned mdescIndex, RefPtr<IceCandidate>&&) override;
    void doneGatheringCandidates(unsigned mdescIndex) override;

    PeerConnectionBackendClient* m_client;
    std::unique_ptr<MediaEndpoint> m_mediaEndpoint;

    Function<void ()> m_initialDeferredTask;

    std::unique_ptr<SDPProcessor> m_sdpProcessor;

    Vector<RefPtr<MediaPayload>> m_defaultAudioPayloads;
    Vector<RefPtr<MediaPayload>> m_defaultVideoPayloads;

    String m_cname;
    String m_iceUfrag;
    String m_icePassword;
    String m_dtlsFingerprint;
    String m_dtlsFingerprintFunction;
    unsigned m_sdpOfferSessionVersion { 0 };
    unsigned m_sdpAnswerSessionVersion { 0 };

    RefPtr<MediaEndpointSessionDescription> m_currentLocalDescription;
    RefPtr<MediaEndpointSessionDescription> m_pendingLocalDescription;

    RefPtr<MediaEndpointSessionDescription> m_currentRemoteDescription;
    RefPtr<MediaEndpointSessionDescription> m_pendingRemoteDescription;

    HashMap<String, RefPtr<MediaStream>> m_remoteStreamMap;

    bool m_negotiationNeeded { false };
};

} // namespace WebCore

#endif // ENABLE(WEB_RTC)

#endif // MediaEndpointPeerConnection_h