1/*
2 * Copyright (C) 2016 Ericsson AB. All rights reserved.
3 * Copyright (C) 2017 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * 3. Neither the name of Ericsson nor the names of its contributors
16 * may be used to endorse or promote products derived from this
17 * software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "config.h"
33#include "RTCRtpTransceiver.h"
34
35#if ENABLE(WEB_RTC)
36
37#include <wtf/IsoMallocInlines.h>
38#include <wtf/NeverDestroyed.h>
39
40namespace WebCore {
41
42WTF_MAKE_ISO_ALLOCATED_IMPL(RTCRtpTransceiver);
43
44RTCRtpTransceiver::RTCRtpTransceiver(Ref<RTCRtpSender>&& sender, Ref<RTCRtpReceiver>&& receiver, std::unique_ptr<RTCRtpTransceiverBackend>&& backend)
45 : m_direction(RTCRtpTransceiverDirection::Sendrecv)
46 , m_sender(WTFMove(sender))
47 , m_receiver(WTFMove(receiver))
48 , m_iceTransport(RTCIceTransport::create())
49 , m_backend(WTFMove(backend))
50{
51}
52
53String RTCRtpTransceiver::mid() const
54{
55 return m_backend ? m_backend->mid() : String { };
56}
57
58bool RTCRtpTransceiver::hasSendingDirection() const
59{
60 return m_direction == RTCRtpTransceiverDirection::Sendrecv || m_direction == RTCRtpTransceiverDirection::Sendonly;
61}
62
63RTCRtpTransceiverDirection RTCRtpTransceiver::direction() const
64{
65 if (!m_backend)
66 return m_direction;
67 return m_backend->direction();
68}
69
70Optional<RTCRtpTransceiverDirection> RTCRtpTransceiver::currentDirection() const
71{
72 if (!m_backend)
73 return WTF::nullopt;
74 return m_backend->currentDirection();
75}
76
77void RTCRtpTransceiver::setDirection(RTCRtpTransceiverDirection direction)
78{
79 m_direction = direction;
80 if (m_backend)
81 m_backend->setDirection(direction);
82}
83
84
85void RTCRtpTransceiver::enableSendingDirection()
86{
87 if (m_direction == RTCRtpTransceiverDirection::Recvonly)
88 m_direction = RTCRtpTransceiverDirection::Sendrecv;
89 else if (m_direction == RTCRtpTransceiverDirection::Inactive)
90 m_direction = RTCRtpTransceiverDirection::Sendonly;
91}
92
93void RTCRtpTransceiver::disableSendingDirection()
94{
95 if (m_direction == RTCRtpTransceiverDirection::Sendrecv)
96 m_direction = RTCRtpTransceiverDirection::Recvonly;
97 else if (m_direction == RTCRtpTransceiverDirection::Sendonly)
98 m_direction = RTCRtpTransceiverDirection::Inactive;
99}
100
101void RTCRtpTransceiver::stop()
102{
103 if (m_stopped)
104 return;
105 m_stopped = true;
106 m_receiver->stop();
107 m_sender->stop();
108 if (m_backend)
109 m_backend->stop();
110}
111
112bool RTCRtpTransceiver::stopped() const
113{
114 if (m_backend)
115 return m_backend->stopped();
116 return m_stopped;
117}
118
119void RtpTransceiverSet::append(Ref<RTCRtpTransceiver>&& transceiver)
120{
121 m_transceivers.append(WTFMove(transceiver));
122}
123
124Vector<std::reference_wrapper<RTCRtpSender>> RtpTransceiverSet::senders() const
125{
126 Vector<std::reference_wrapper<RTCRtpSender>> senders;
127 for (auto& transceiver : m_transceivers) {
128 if (transceiver->stopped())
129 continue;
130 senders.append(transceiver->sender());
131 }
132 return senders;
133}
134
135Vector<std::reference_wrapper<RTCRtpReceiver>> RtpTransceiverSet::receivers() const
136{
137 Vector<std::reference_wrapper<RTCRtpReceiver>> receivers;
138 for (auto& transceiver : m_transceivers) {
139 if (transceiver->stopped())
140 continue;
141 receivers.append(transceiver->receiver());
142 }
143 return receivers;
144}
145
146} // namespace WebCore
147
148#endif // ENABLE(WEB_RTC)
149