third_party/WebKit/Source/platform/mediastream/MediaStreamCenter.cpp

   1 /*
   2  * Copyright (C) 2011 Ericsson AB. All rights reserved.
   3  * Copyright (C) 2012 Google 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 "platform/mediastream/MediaStreamCenter.h"
  34
  35 #include "platform/mediastream/MediaStreamDescriptor.h"
  36 #include "platform/mediastream/MediaStreamTrackSourcesRequest.h"
  37 #include "platform/mediastream/MediaStreamWebAudioSource.h"
  38 #include "public/platform/Platform.h"
  39 #include "public/platform/WebAudioSourceProvider.h"
  40 #include "public/platform/WebMediaStream.h"
  41 #include "public/platform/WebMediaStreamCenter.h"
  42 #include "public/platform/WebMediaStreamTrack.h"
  43 #include "wtf/Assertions.h"
  44 #include "wtf/MainThread.h"
  45 #include "wtf/PassOwnPtr.h"
  46
  47 namespace blink {
  48
  49 MediaStreamCenter& MediaStreamCenter::instance()
  50 {
  51     ASSERT(isMainThread());
  52     DEFINE_STATIC_LOCAL(MediaStreamCenter, center, ());
  53     return center;
  54 }
  55
  56 MediaStreamCenter::MediaStreamCenter()
  57     : m_private(adoptPtr(Platform::current()->createMediaStreamCenter(this)))
  58 {
  59 }
  60
  61 MediaStreamCenter::~MediaStreamCenter()
  62 {
  63 }
  64
  65 void MediaStreamCenter::didSetMediaStreamTrackEnabled(MediaStreamComponent* component)
  66 {
  67     if (m_private) {
  68         if (component->enabled()) {
  69             m_private->didEnableMediaStreamTrack(component);
  70         } else {
  71             m_private->didDisableMediaStreamTrack(component);
  72         }
  73     }
  74 }
  75
  76 bool MediaStreamCenter::didAddMediaStreamTrack(MediaStreamDescriptor* stream, MediaStreamComponent* component)
  77 {
  78     return m_private && m_private->didAddMediaStreamTrack(stream, component);
  79 }
  80
  81 bool MediaStreamCenter::didRemoveMediaStreamTrack(MediaStreamDescriptor* stream, MediaStreamComponent* component)
  82 {
  83     return m_private && m_private->didRemoveMediaStreamTrack(stream, component);
  84 }
  85
  86 void MediaStreamCenter::didStopLocalMediaStream(MediaStreamDescriptor* stream)
  87 {
  88     if (m_private)
  89         m_private->didStopLocalMediaStream(stream);
  90 }
  91
  92 bool MediaStreamCenter::didStopMediaStreamTrack(MediaStreamComponent* track)
  93 {
  94     return m_private && m_private->didStopMediaStreamTrack(track);
  95 }
  96
  97 void MediaStreamCenter::didCreateMediaStreamAndTracks(MediaStreamDescriptor* stream)
  98 {
  99     if (!m_private)
 100         return;
 101
 102     for (size_t i = 0; i < stream->numberOfAudioComponents(); ++i)
 103         didCreateMediaStreamTrack(stream->audioComponent(i));
 104
 105     for (size_t i = 0; i < stream->numberOfVideoComponents(); ++i)
 106         didCreateMediaStreamTrack(stream->videoComponent(i));
 107
 108     WebMediaStream webStream(stream);
 109     m_private->didCreateMediaStream(webStream);
 110 }
 111
 112 void MediaStreamCenter::didCreateMediaStream(MediaStreamDescriptor* stream)
 113 {
 114     if (m_private) {
 115         WebMediaStream webStream(stream);
 116         m_private->didCreateMediaStream(webStream);
 117     }
 118 }
 119
 120 void MediaStreamCenter::didCreateMediaStreamTrack(MediaStreamComponent* track)
 121 {
 122     if (m_private)
 123         m_private->didCreateMediaStreamTrack(track);
 124 }
 125
 126 PassOwnPtr<AudioSourceProvider> MediaStreamCenter::createWebAudioSourceFromMediaStreamTrack(MediaStreamComponent* track)
 127 {
 128     ASSERT_UNUSED(track, track);
 129 #if ENABLE(WEB_AUDIO)
 130     if (m_private)
 131         return MediaStreamWebAudioSource::create(adoptPtr(m_private->createWebAudioSourceFromMediaStreamTrack(track)));
 132 #endif
 133
 134     return nullptr;
 135 }
 136
 137 void MediaStreamCenter::stopLocalMediaStream(const WebMediaStream& webStream)
 138 {
 139     MediaStreamDescriptor* stream = webStream;
 140     MediaStreamDescriptorClient* client = stream->client();
 141     if (client)
 142         client->streamEnded();
 143     else
 144         stream->setEnded();
 145 }
 146
 147 } // namespace blink