1 /*
2 * libjingle
3 * Copyright 2015 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/app/webrtc/rtpreceiver.h"
29
30 #include "talk/app/webrtc/videosourceinterface.h"
31
32 namespace webrtc {
33
AudioRtpReceiver(AudioTrackInterface * track,uint32_t ssrc,AudioProviderInterface * provider)34 AudioRtpReceiver::AudioRtpReceiver(AudioTrackInterface* track,
35 uint32_t ssrc,
36 AudioProviderInterface* provider)
37 : id_(track->id()),
38 track_(track),
39 ssrc_(ssrc),
40 provider_(provider),
41 cached_track_enabled_(track->enabled()) {
42 RTC_DCHECK(track_->GetSource()->remote());
43 track_->RegisterObserver(this);
44 track_->GetSource()->RegisterAudioObserver(this);
45 Reconfigure();
46 }
47
~AudioRtpReceiver()48 AudioRtpReceiver::~AudioRtpReceiver() {
49 track_->GetSource()->UnregisterAudioObserver(this);
50 track_->UnregisterObserver(this);
51 Stop();
52 }
53
OnChanged()54 void AudioRtpReceiver::OnChanged() {
55 if (cached_track_enabled_ != track_->enabled()) {
56 cached_track_enabled_ = track_->enabled();
57 Reconfigure();
58 }
59 }
60
OnSetVolume(double volume)61 void AudioRtpReceiver::OnSetVolume(double volume) {
62 // When the track is disabled, the volume of the source, which is the
63 // corresponding WebRtc Voice Engine channel will be 0. So we do not allow
64 // setting the volume to the source when the track is disabled.
65 if (provider_ && track_->enabled())
66 provider_->SetAudioPlayoutVolume(ssrc_, volume);
67 }
68
Stop()69 void AudioRtpReceiver::Stop() {
70 // TODO(deadbeef): Need to do more here to fully stop receiving packets.
71 if (!provider_) {
72 return;
73 }
74 provider_->SetAudioPlayout(ssrc_, false);
75 provider_ = nullptr;
76 }
77
Reconfigure()78 void AudioRtpReceiver::Reconfigure() {
79 if (!provider_) {
80 return;
81 }
82 provider_->SetAudioPlayout(ssrc_, track_->enabled());
83 }
84
VideoRtpReceiver(VideoTrackInterface * track,uint32_t ssrc,VideoProviderInterface * provider)85 VideoRtpReceiver::VideoRtpReceiver(VideoTrackInterface* track,
86 uint32_t ssrc,
87 VideoProviderInterface* provider)
88 : id_(track->id()), track_(track), ssrc_(ssrc), provider_(provider) {
89 RTC_DCHECK(track_->GetSource()->remote());
90 provider_->SetVideoPlayout(ssrc_, true, track_->GetSource()->FrameInput());
91 }
92
~VideoRtpReceiver()93 VideoRtpReceiver::~VideoRtpReceiver() {
94 // Since cricket::VideoRenderer is not reference counted,
95 // we need to remove it from the provider before we are deleted.
96 Stop();
97 }
98
Stop()99 void VideoRtpReceiver::Stop() {
100 // TODO(deadbeef): Need to do more here to fully stop receiving packets.
101 if (!provider_) {
102 return;
103 }
104 provider_->SetVideoPlayout(ssrc_, false, nullptr);
105 provider_ = nullptr;
106 }
107
108 } // namespace webrtc
109