fe0ddd7972032ab63791dcd7cf5d33b84f170d20
[WebKit-https.git] / Source / WebCore / platform / mediastream / RealtimeIncomingAudioSource.cpp
1 /*
2  * Copyright (C) 2017 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  *
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer
12  *    in the documentation and/or other materials provided with the
13  *    distribution.
14  * 3. Neither the name of Google Inc. nor the names of its contributors
15  *    may be used to endorse or promote products derived from this
16  *    software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30
31 #include "config.h"
32 #include "RealtimeIncomingAudioSource.h"
33
34 #if USE(LIBWEBRTC)
35
36 #include "LibWebRTCAudioFormat.h"
37 #include "Logging.h"
38 #include <wtf/CryptographicallyRandomNumber.h>
39
40 namespace WebCore {
41
42 RealtimeIncomingAudioSource::RealtimeIncomingAudioSource(rtc::scoped_refptr<webrtc::AudioTrackInterface>&& audioTrack, String&& audioTrackId)
43     : RealtimeMediaSource(RealtimeMediaSource::Type::Audio, "remote audio"_s, WTFMove(audioTrackId))
44     , m_audioTrack(WTFMove(audioTrack))
45 #if !RELEASE_LOG_DISABLED
46     , m_logIdentifier(reinterpret_cast<const void*>(cryptographicallyRandomNumber()))
47 #endif
48 {
49     notifyMutedChange(!m_audioTrack);
50 }
51
52 RealtimeIncomingAudioSource::~RealtimeIncomingAudioSource()
53 {
54     stop();
55 }
56
57 void RealtimeIncomingAudioSource::startProducingData()
58 {
59     if (m_audioTrack)
60         m_audioTrack->AddSink(this);
61 }
62
63 void RealtimeIncomingAudioSource::stopProducingData()
64 {
65     if (m_audioTrack)
66         m_audioTrack->RemoveSink(this);
67 }
68
69 void RealtimeIncomingAudioSource::setSourceTrack(rtc::scoped_refptr<webrtc::AudioTrackInterface>&& track)
70 {
71     ASSERT(track);
72
73     if (m_audioTrack && isProducingData())
74         m_audioTrack->RemoveSink(this);
75
76     m_audioTrack = WTFMove(track);
77     notifyMutedChange(!m_audioTrack);
78     if (isProducingData())
79         m_audioTrack->AddSink(this);
80 }
81
82 const RealtimeMediaSourceCapabilities& RealtimeIncomingAudioSource::capabilities()
83 {
84     return RealtimeMediaSourceCapabilities::emptyCapabilities();
85 }
86
87 const RealtimeMediaSourceSettings& RealtimeIncomingAudioSource::settings()
88 {
89     return m_currentSettings;
90 }
91
92 #if !RELEASE_LOG_DISABLED
93 WTFLogChannel& RealtimeIncomingAudioSource::logChannel() const
94 {
95     return LogWebRTC;
96 }
97
98 const Logger& RealtimeIncomingAudioSource::logger() const
99 {
100     if (!m_logger)
101         m_logger = Logger::create(this);
102     return *m_logger;
103 }
104 #endif
105
106 }
107
108 #endif // USE(LIBWEBRTC)