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/*
* Copyright (C) 2015 Ericsson AB. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Ericsson nor the names of its contributors
* 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
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(WEB_RTC)
#include "JSDOMPromise.h"
#include "PeerConnectionStates.h"
namespace WebCore {
class MediaStream;
class MediaStreamTrack;
class PeerConnectionBackend;
class RTCDataChannelHandler;
class RTCIceCandidate;
class RTCPeerConnection;
class RTCRtpReceiver;
class RTCRtpSender;
class RTCSessionDescription;
class RTCStatsReport;
struct MediaEndpointConfiguration;
struct RTCAnswerOptions;
struct RTCDataChannelInit;
struct RTCOfferOptions;
namespace PeerConnection {
using SessionDescriptionPromise = DOMPromise<IDLInterface<RTCSessionDescription>>;
using StatsPromise = DOMPromise<IDLInterface<RTCStatsReport>>;
}
using CreatePeerConnectionBackend = std::unique_ptr<PeerConnectionBackend> (*)(RTCPeerConnection&);
// FIXME: What is the value of this abstract class? There is only one concrete class derived from it.
class PeerConnectionBackend {
public:
WEBCORE_EXPORT static CreatePeerConnectionBackend create;
PeerConnectionBackend(RTCPeerConnection& peerConnection) : m_peerConnection(peerConnection) { }
virtual ~PeerConnectionBackend() { }
void createOffer(RTCOfferOptions&&, PeerConnection::SessionDescriptionPromise&&);
void createAnswer(RTCAnswerOptions&&, PeerConnection::SessionDescriptionPromise&&);
void setLocalDescription(RTCSessionDescription&, DOMPromise<void>&&);
void setRemoteDescription(RTCSessionDescription&, DOMPromise<void>&&);
void addIceCandidate(RTCIceCandidate&, DOMPromise<void>&&);
virtual std::unique_ptr<RTCDataChannelHandler> createDataChannelHandler(const String&, const RTCDataChannelInit&) = 0;
void stop();
virtual RefPtr<RTCSessionDescription> localDescription() const = 0;
virtual RefPtr<RTCSessionDescription> currentLocalDescription() const = 0;
virtual RefPtr<RTCSessionDescription> pendingLocalDescription() const = 0;
virtual RefPtr<RTCSessionDescription> remoteDescription() const = 0;
virtual RefPtr<RTCSessionDescription> currentRemoteDescription() const = 0;
virtual RefPtr<RTCSessionDescription> pendingRemoteDescription() const = 0;
virtual void setConfiguration(MediaEndpointConfiguration&&) = 0;
virtual void getStats(MediaStreamTrack*, Ref<DeferredPromise>&&) = 0;
virtual Vector<RefPtr<MediaStream>> getRemoteStreams() const = 0;
virtual Ref<RTCRtpReceiver> createReceiver(const String& transceiverMid, const String& trackKind, const String& trackId) = 0;
virtual void replaceTrack(RTCRtpSender&, RefPtr<MediaStreamTrack>&&, DOMPromise<void>&&) = 0;
void markAsNeedingNegotiation();
bool isNegotiationNeeded() const { return m_negotiationNeeded; };
void clearNegotiationNeededState() { m_negotiationNeeded = false; };
virtual void emulatePlatformEvent(const String& action) = 0;
protected:
void fireICECandidateEvent(RefPtr<RTCIceCandidate>&&);
void doneGatheringCandidates();
void updateSignalingState(PeerConnectionStates::SignalingState);
void createOfferSucceeded(String&&);
void createOfferFailed(Exception&&);
void createAnswerSucceeded(String&&);
void createAnswerFailed(Exception&&);
void setLocalDescriptionSucceeded();
void setLocalDescriptionFailed(Exception&&);
void setRemoteDescriptionSucceeded();
void setRemoteDescriptionFailed(Exception&&);
void addIceCandidateSucceeded();
void addIceCandidateFailed(Exception&&);
private:
virtual void doCreateOffer(RTCOfferOptions&&) = 0;
virtual void doCreateAnswer(RTCAnswerOptions&&) = 0;
virtual void doSetLocalDescription(RTCSessionDescription&) = 0;
virtual void doSetRemoteDescription(RTCSessionDescription&) = 0;
virtual void doAddIceCandidate(RTCIceCandidate&) = 0;
virtual void doStop() = 0;
protected:
RTCPeerConnection& m_peerConnection;
private:
std::optional<PeerConnection::SessionDescriptionPromise> m_offerAnswerPromise;
std::optional<DOMPromise<void>> m_setDescriptionPromise;
std::optional<DOMPromise<void>> m_addIceCandidatePromise;
bool m_negotiationNeeded { false };
};
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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