5933c8a7eda052dbfb1ed9309bcd625125816ba0
[WebKit-https.git] / Source / WebCore / Modules / mediastream / libwebrtc / LibWebRTCPeerConnectionBackend.h
1 /*
2  * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1.  Redistributions of source code must retain the above copyright
8  *     notice, this list of conditions and the following disclaimer.
9  * 2.  Redistributions in binary form must reproduce the above copyright
10  *     notice, this list of conditions and the following disclaimer in the
11  *     documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  */
24
25 #pragma once
26
27 #if USE(LIBWEBRTC)
28
29 #include "PeerConnectionBackend.h"
30 #include <wtf/HashMap.h>
31
32 namespace webrtc {
33 class IceCandidateInterface;
34 }
35
36 namespace WebCore {
37
38 class LibWebRTCMediaEndpoint;
39 class LibWebRTCProvider;
40 class LibWebRTCRtpSenderBackend;
41 class LibWebRTCRtpTransceiverBackend;
42 class RTCRtpReceiver;
43 class RTCRtpReceiverBackend;
44 class RTCSessionDescription;
45 class RTCStatsReport;
46 class RealtimeIncomingAudioSource;
47 class RealtimeIncomingVideoSource;
48 class RealtimeMediaSource;
49 class RealtimeOutgoingAudioSource;
50 class RealtimeOutgoingVideoSource;
51
52 class LibWebRTCPeerConnectionBackend final : public PeerConnectionBackend {
53     WTF_MAKE_FAST_ALLOCATED;
54 public:
55     LibWebRTCPeerConnectionBackend(RTCPeerConnection&, LibWebRTCProvider&);
56     ~LibWebRTCPeerConnectionBackend();
57
58     void replaceTrack(RTCRtpSender&, RefPtr<MediaStreamTrack>&&, DOMPromiseDeferred<void>&&);
59
60     bool shouldOfferAllowToReceive(const char*) const;
61
62 private:
63     void doCreateOffer(RTCOfferOptions&&) final;
64     void doCreateAnswer(RTCAnswerOptions&&) final;
65     void doSetLocalDescription(RTCSessionDescription&) final;
66     void doSetRemoteDescription(RTCSessionDescription&) final;
67     void doAddIceCandidate(RTCIceCandidate&) final;
68     void doStop() final;
69     std::unique_ptr<RTCDataChannelHandler> createDataChannelHandler(const String&, const RTCDataChannelInit&) final;
70     bool setConfiguration(MediaEndpointConfiguration&&) final;
71     void getStats(Ref<DeferredPromise>&&) final;
72     void getStats(RTCRtpSender&, Ref<DeferredPromise>&&) final;
73     void getStats(RTCRtpReceiver&, Ref<DeferredPromise>&&) final;
74
75     RefPtr<RTCSessionDescription> localDescription() const final;
76     RefPtr<RTCSessionDescription> currentLocalDescription() const final;
77     RefPtr<RTCSessionDescription> pendingLocalDescription() const final;
78
79     RefPtr<RTCSessionDescription> remoteDescription() const final;
80     RefPtr<RTCSessionDescription> currentRemoteDescription() const final;
81     RefPtr<RTCSessionDescription> pendingRemoteDescription() const final;
82
83     void emulatePlatformEvent(const String&) final { }
84     void applyRotationForOutgoingVideoSources() final;
85
86     friend class LibWebRTCMediaEndpoint;
87     friend class LibWebRTCRtpSenderBackend;
88     RTCPeerConnection& connection() { return m_peerConnection; }
89
90     void getStatsSucceeded(const DeferredPromise&, Ref<RTCStatsReport>&&);
91
92     ExceptionOr<Ref<RTCRtpSender>> addTrack(MediaStreamTrack&, Vector<String>&&) final;
93     void removeTrack(RTCRtpSender&) final;
94
95     ExceptionOr<Ref<RTCRtpTransceiver>> addTransceiver(const String&, const RTCRtpTransceiverInit&) final;
96     ExceptionOr<Ref<RTCRtpTransceiver>> addTransceiver(Ref<MediaStreamTrack>&&, const RTCRtpTransceiverInit&) final;
97     void setSenderSourceFromTrack(LibWebRTCRtpSenderBackend&, MediaStreamTrack&);
98
99     RTCRtpTransceiver* existingTransceiver(WTF::Function<bool(LibWebRTCRtpTransceiverBackend&)>&&);
100     RTCRtpTransceiver& newRemoteTransceiver(std::unique_ptr<LibWebRTCRtpTransceiverBackend>&&, Ref<RealtimeMediaSource>&&);
101
102     void collectTransceivers() final;
103
104     struct VideoReceiver {
105         Ref<RTCRtpReceiver> receiver;
106         Ref<RealtimeIncomingVideoSource> source;
107     };
108     struct AudioReceiver {
109         Ref<RTCRtpReceiver> receiver;
110         Ref<RealtimeIncomingAudioSource> source;
111     };
112     VideoReceiver videoReceiver(String&& trackId);
113     AudioReceiver audioReceiver(String&& trackId);
114
115 private:
116     bool isLocalDescriptionSet() const final { return m_isLocalDescriptionSet; }
117
118     Ref<RTCRtpTransceiver> completeAddTransceiver(Ref<RTCRtpSender>&&, const RTCRtpTransceiverInit&, const String& trackId, const String& trackKind);
119
120     Ref<RTCRtpReceiver> createReceiver(const String& trackKind, const String& trackId);
121
122     template<typename T>
123     ExceptionOr<Ref<RTCRtpTransceiver>> addUnifiedPlanTransceiver(T&& trackOrKind, const RTCRtpTransceiverInit&);
124
125     Ref<RTCRtpReceiver> createReceiverForSource(Ref<RealtimeMediaSource>&&, std::unique_ptr<RTCRtpReceiverBackend>&&);
126
127     void suspend() final;
128     void resume() final;
129
130     Ref<LibWebRTCMediaEndpoint> m_endpoint;
131     bool m_isLocalDescriptionSet { false };
132     bool m_isRemoteDescriptionSet { false };
133
134     Vector<std::unique_ptr<webrtc::IceCandidateInterface>> m_pendingCandidates;
135     Vector<Ref<RTCRtpReceiver>> m_pendingReceivers;
136 };
137
138 } // namespace WebCore
139
140 #endif // USE(LIBWEBRTC)