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1 /*
2  * Copyright (C) 2013 Google 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 #include "config.h"
26 
27 #include "public/platform/WebMediaStream.h"
28 
29 #include "platform/UUID.h"
30 #include "platform/mediastream/MediaStreamComponent.h"
31 #include "platform/mediastream/MediaStreamDescriptor.h"
32 #include "platform/mediastream/MediaStreamSource.h"
33 #include "public/platform/WebMediaStreamSource.h"
34 #include "public/platform/WebMediaStreamTrack.h"
35 #include "public/platform/WebString.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/PassOwnPtr.h"
38 #include "wtf/Vector.h"
39 
40 namespace blink {
41 
42 namespace {
43 
44 class ExtraDataContainer : public MediaStreamDescriptor::ExtraData {
45 public:
ExtraDataContainer(PassOwnPtr<WebMediaStream::ExtraData> extraData)46     ExtraDataContainer(PassOwnPtr<WebMediaStream::ExtraData> extraData) : m_extraData(extraData) { }
47 
extraData()48     WebMediaStream::ExtraData* extraData() { return m_extraData.get(); }
49 
50 private:
51     OwnPtr<WebMediaStream::ExtraData> m_extraData;
52 };
53 
54 } // namespace
55 
WebMediaStream(const PassRefPtr<MediaStreamDescriptor> & mediaStreamDescriptor)56 WebMediaStream::WebMediaStream(const PassRefPtr<MediaStreamDescriptor>& mediaStreamDescriptor)
57     : m_private(mediaStreamDescriptor)
58 {
59 }
60 
WebMediaStream(MediaStreamDescriptor * mediaStreamDescriptor)61 WebMediaStream::WebMediaStream(MediaStreamDescriptor* mediaStreamDescriptor)
62     : m_private(mediaStreamDescriptor)
63 {
64 }
65 
reset()66 void WebMediaStream::reset()
67 {
68     m_private.reset();
69 }
70 
id() const71 WebString WebMediaStream::id() const
72 {
73     return m_private->id();
74 }
75 
extraData() const76 WebMediaStream::ExtraData* WebMediaStream::extraData() const
77 {
78     MediaStreamDescriptor::ExtraData* data = m_private->extraData();
79     if (!data)
80         return 0;
81     return static_cast<ExtraDataContainer*>(data)->extraData();
82 }
83 
setExtraData(ExtraData * extraData)84 void WebMediaStream::setExtraData(ExtraData* extraData)
85 {
86     m_private->setExtraData(adoptPtr(new ExtraDataContainer(adoptPtr(extraData))));
87 }
88 
audioTracks(WebVector<WebMediaStreamTrack> & webTracks) const89 void WebMediaStream::audioTracks(WebVector<WebMediaStreamTrack>& webTracks) const
90 {
91     size_t numberOfTracks = m_private->numberOfAudioComponents();
92     WebVector<WebMediaStreamTrack> result(numberOfTracks);
93     for (size_t i = 0; i < numberOfTracks; ++i)
94         result[i] = m_private->audioComponent(i);
95     webTracks.swap(result);
96 }
97 
videoTracks(WebVector<WebMediaStreamTrack> & webTracks) const98 void WebMediaStream::videoTracks(WebVector<WebMediaStreamTrack>& webTracks) const
99 {
100     size_t numberOfTracks = m_private->numberOfVideoComponents();
101     WebVector<WebMediaStreamTrack> result(numberOfTracks);
102     for (size_t i = 0; i < numberOfTracks; ++i)
103         result[i] = m_private->videoComponent(i);
104     webTracks.swap(result);
105 }
106 
addTrack(const WebMediaStreamTrack & track)107 void WebMediaStream::addTrack(const WebMediaStreamTrack& track)
108 {
109     ASSERT(!isNull());
110     m_private->addRemoteTrack(track);
111 }
112 
removeTrack(const WebMediaStreamTrack & track)113 void WebMediaStream::removeTrack(const WebMediaStreamTrack& track)
114 {
115     ASSERT(!isNull());
116     m_private->removeRemoteTrack(track);
117 }
118 
operator =(const PassRefPtr<MediaStreamDescriptor> & mediaStreamDescriptor)119 WebMediaStream& WebMediaStream::operator=(const PassRefPtr<MediaStreamDescriptor>& mediaStreamDescriptor)
120 {
121     m_private = mediaStreamDescriptor;
122     return *this;
123 }
124 
operator PassRefPtr<MediaStreamDescriptor>() const125 WebMediaStream::operator PassRefPtr<MediaStreamDescriptor>() const
126 {
127     return m_private.get();
128 }
129 
operator MediaStreamDescriptor*() const130 WebMediaStream::operator MediaStreamDescriptor*() const
131 {
132     return m_private.get();
133 }
134 
initialize(const WebVector<WebMediaStreamTrack> & audioTracks,const WebVector<WebMediaStreamTrack> & videoTracks)135 void WebMediaStream::initialize(const WebVector<WebMediaStreamTrack>& audioTracks, const WebVector<WebMediaStreamTrack>& videoTracks)
136 {
137     initialize(createCanonicalUUIDString(), audioTracks, videoTracks);
138 }
139 
initialize(const WebString & label,const WebVector<WebMediaStreamTrack> & audioTracks,const WebVector<WebMediaStreamTrack> & videoTracks)140 void WebMediaStream::initialize(const WebString& label, const WebVector<WebMediaStreamTrack>& audioTracks, const WebVector<WebMediaStreamTrack>& videoTracks)
141 {
142     MediaStreamComponentVector audio, video;
143     for (size_t i = 0; i < audioTracks.size(); ++i) {
144         MediaStreamComponent* component = audioTracks[i];
145         audio.append(component);
146     }
147     for (size_t i = 0; i < videoTracks.size(); ++i) {
148         MediaStreamComponent* component = videoTracks[i];
149         video.append(component);
150     }
151     m_private = MediaStreamDescriptor::create(label, audio, video);
152 }
153 
assign(const WebMediaStream & other)154 void WebMediaStream::assign(const WebMediaStream& other)
155 {
156     m_private = other.m_private;
157 }
158 
159 } // namespace blink
160