third_party/WebKit/Source/platform/exported/WebMediaStream.cpp

   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:
  46     ExtraDataContainer(PassOwnPtr<WebMediaStream::ExtraData> extraData) : m_extraData(extraData) { }
  47
  48     WebMediaStream::ExtraData* extraData() { return m_extraData.get(); }
  49
  50 private:
  51     OwnPtr<WebMediaStream::ExtraData> m_extraData;
  52 };
  53
  54 } // namespace
  55
  56 WebMediaStream::WebMediaStream(const PassRefPtr<MediaStreamDescriptor>& mediaStreamDescriptor)
  57     : m_private(mediaStreamDescriptor)
  58 {
  59 }
  60
  61 WebMediaStream::WebMediaStream(MediaStreamDescriptor* mediaStreamDescriptor)
  62     : m_private(mediaStreamDescriptor)
  63 {
  64 }
  65
  66 void WebMediaStream::reset()
  67 {
  68     m_private.reset();
  69 }
  70
  71 WebString WebMediaStream::id() const
  72 {
  73     return m_private->id();
  74 }
  75
  76 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
  84 void WebMediaStream::setExtraData(ExtraData* extraData)
  85 {
  86     m_private->setExtraData(adoptPtr(new ExtraDataContainer(adoptPtr(extraData))));
  87 }
  88
  89 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
  98 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
 107 void WebMediaStream::addTrack(const WebMediaStreamTrack& track)
 108 {
 109     ASSERT(!isNull());
 110     m_private->addRemoteTrack(track);
 111 }
 112
 113 void WebMediaStream::removeTrack(const WebMediaStreamTrack& track)
 114 {
 115     ASSERT(!isNull());
 116     m_private->removeRemoteTrack(track);
 117 }
 118
 119 WebMediaStream& WebMediaStream::operator=(const PassRefPtr<MediaStreamDescriptor>& mediaStreamDescriptor)
 120 {
 121     m_private = mediaStreamDescriptor;
 122     return *this;
 123 }
 124
 125 WebMediaStream::operator PassRefPtr<MediaStreamDescriptor>() const
 126 {
 127     return m_private.get();
 128 }
 129
 130 WebMediaStream::operator MediaStreamDescriptor*() const
 131 {
 132     return m_private.get();
 133 }
 134
 135 void WebMediaStream::initialize(const WebVector<WebMediaStreamTrack>& audioTracks, const WebVector<WebMediaStreamTrack>& videoTracks)
 136 {
 137     initialize(createCanonicalUUIDString(), audioTracks, videoTracks);
 138 }
 139
 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
 154 void WebMediaStream::assign(const WebMediaStream& other)
 155 {
 156     m_private = other.m_private;
 157 }
 158
 159 } // namespace blink