1 | /* |
2 | * Copyright (C) 2018 Apple Inc. |
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 | #include "config.h" |
26 | #include "LibWebRTCRtpSenderBackend.h" |
27 | |
28 | #if ENABLE(WEB_RTC) && USE(LIBWEBRTC) |
29 | |
30 | #include "LibWebRTCPeerConnectionBackend.h" |
31 | #include "LibWebRTCUtils.h" |
32 | #include "RTCPeerConnection.h" |
33 | #include "RTCRtpSender.h" |
34 | #include "RuntimeEnabledFeatures.h" |
35 | #include "ScriptExecutionContext.h" |
36 | |
37 | namespace WebCore { |
38 | |
39 | template<typename Source> |
40 | static inline bool updateTrackSource(Source& source, MediaStreamTrack* track) |
41 | { |
42 | if (!track) { |
43 | source.stop(); |
44 | return true; |
45 | } |
46 | return source.setSource(track->privateTrack()); |
47 | } |
48 | |
49 | void LibWebRTCRtpSenderBackend::replaceTrack(ScriptExecutionContext& context, RTCRtpSender& sender, RefPtr<MediaStreamTrack>&& track, DOMPromiseDeferred<void>&& promise) |
50 | { |
51 | if (!m_peerConnectionBackend) { |
52 | promise.reject(Exception { InvalidStateError, "No WebRTC backend"_s }); |
53 | return; |
54 | } |
55 | |
56 | auto* currentTrack = sender.track(); |
57 | |
58 | ASSERT(!track || !currentTrack || currentTrack->source().type() == track->source().type()); |
59 | if (currentTrack) { |
60 | switch (currentTrack->source().type()) { |
61 | case RealtimeMediaSource::Type::None: |
62 | ASSERT_NOT_REACHED(); |
63 | promise.reject(InvalidModificationError); |
64 | break; |
65 | case RealtimeMediaSource::Type::Audio: |
66 | if (!updateTrackSource(*audioSource(), track.get())) { |
67 | promise.reject(InvalidModificationError); |
68 | return; |
69 | } |
70 | break; |
71 | case RealtimeMediaSource::Type::Video: |
72 | if (!updateTrackSource(*videoSource(), track.get())) { |
73 | promise.reject(InvalidModificationError); |
74 | return; |
75 | } |
76 | break; |
77 | } |
78 | } |
79 | |
80 | // FIXME: Remove this postTask once this whole function is executed as part of the RTCPeerConnection operation queue. |
81 | context.postTask([protectedSender = makeRef(sender), promise = WTFMove(promise), track = WTFMove(track), this](ScriptExecutionContext&) mutable { |
82 | if (protectedSender->isStopped()) |
83 | return; |
84 | |
85 | if (!track) { |
86 | protectedSender->setTrackToNull(); |
87 | promise.resolve(); |
88 | return; |
89 | } |
90 | |
91 | bool hasTrack = protectedSender->track(); |
92 | protectedSender->setTrack(track.releaseNonNull()); |
93 | |
94 | if (hasTrack) { |
95 | promise.resolve(); |
96 | return; |
97 | } |
98 | |
99 | if (RuntimeEnabledFeatures::sharedFeatures().webRTCUnifiedPlanEnabled()) { |
100 | m_source = nullptr; |
101 | m_peerConnectionBackend->setSenderSourceFromTrack(*this, *protectedSender->track()); |
102 | promise.resolve(); |
103 | return; |
104 | } |
105 | |
106 | auto result = m_peerConnectionBackend->addTrack(*protectedSender->track(), { }); |
107 | if (result.hasException()) { |
108 | promise.reject(result.releaseException()); |
109 | return; |
110 | } |
111 | promise.resolve(); |
112 | }); |
113 | } |
114 | |
115 | RTCRtpSendParameters LibWebRTCRtpSenderBackend::getParameters() const |
116 | { |
117 | if (!m_rtcSender) |
118 | return { }; |
119 | |
120 | m_currentParameters = m_rtcSender->GetParameters(); |
121 | return toRTCRtpSendParameters(*m_currentParameters); |
122 | } |
123 | |
124 | void LibWebRTCRtpSenderBackend::setParameters(const RTCRtpSendParameters& parameters, DOMPromiseDeferred<void>&& promise) |
125 | { |
126 | if (!m_rtcSender) { |
127 | promise.reject(NotSupportedError); |
128 | return; |
129 | } |
130 | |
131 | if (!m_currentParameters) { |
132 | promise.reject(Exception { InvalidStateError, "getParameters must be called before setParameters"_s }); |
133 | return; |
134 | } |
135 | |
136 | auto rtcParameters = WTFMove(*m_currentParameters); |
137 | updateRTCRtpSendParameters(parameters, rtcParameters); |
138 | m_currentParameters = WTF::nullopt; |
139 | |
140 | auto error = m_rtcSender->SetParameters(rtcParameters); |
141 | if (!error.ok()) { |
142 | promise.reject(Exception { InvalidStateError, error.message() }); |
143 | return; |
144 | } |
145 | promise.resolve(); |
146 | } |
147 | |
148 | } // namespace WebCore |
149 | |
150 | #endif // ENABLE(WEB_RTC) && USE(LIBWEBRTC) |
151 | |