1/* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * Copyright (C) 2011 Ericsson AB. 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 * 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 in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "MediaStreamTrack.h" 28 29#if ENABLE(MEDIA_STREAM) 30 31#include "Event.h" 32#include "MediaStreamCenter.h" 33#include "MediaStreamComponent.h" 34 35namespace WebCore { 36 37PassRefPtr<MediaStreamTrack> MediaStreamTrack::create(ScriptExecutionContext* context, MediaStreamComponent* component) 38{ 39 RefPtr<MediaStreamTrack> track = adoptRef(new MediaStreamTrack(context, component)); 40 track->suspendIfNeeded(); 41 return track.release(); 42} 43 44MediaStreamTrack::MediaStreamTrack(ScriptExecutionContext* context, MediaStreamComponent* component) 45 : ActiveDOMObject(context) 46 , m_stopped(false) 47 , m_component(component) 48{ 49 m_component->source()->addObserver(this); 50} 51 52MediaStreamTrack::~MediaStreamTrack() 53{ 54 m_component->source()->removeObserver(this); 55} 56 57String MediaStreamTrack::kind() const 58{ 59 DEFINE_STATIC_LOCAL(String, audioKind, (ASCIILiteral("audio"))); 60 DEFINE_STATIC_LOCAL(String, videoKind, (ASCIILiteral("video"))); 61 62 switch (m_component->source()->type()) { 63 case MediaStreamSource::TypeAudio: 64 return audioKind; 65 case MediaStreamSource::TypeVideo: 66 return videoKind; 67 } 68 69 ASSERT_NOT_REACHED(); 70 return audioKind; 71} 72 73String MediaStreamTrack::id() const 74{ 75 return m_component->id(); 76} 77 78String MediaStreamTrack::label() const 79{ 80 return m_component->source()->name(); 81} 82 83bool MediaStreamTrack::enabled() const 84{ 85 return m_component->enabled(); 86} 87 88void MediaStreamTrack::setEnabled(bool enabled) 89{ 90 if (m_stopped || enabled == m_component->enabled()) 91 return; 92 93 m_component->setEnabled(enabled); 94 95 if (m_component->stream()->ended()) 96 return; 97 98 MediaStreamCenter::instance().didSetMediaStreamTrackEnabled(m_component->stream(), m_component.get()); 99} 100 101String MediaStreamTrack::readyState() const 102{ 103 if (m_stopped) 104 return ASCIILiteral("ended"); 105 106 switch (m_component->source()->readyState()) { 107 case MediaStreamSource::ReadyStateLive: 108 return ASCIILiteral("live"); 109 case MediaStreamSource::ReadyStateMuted: 110 return ASCIILiteral("muted"); 111 case MediaStreamSource::ReadyStateEnded: 112 return ASCIILiteral("ended"); 113 } 114 115 ASSERT_NOT_REACHED(); 116 return String(); 117} 118 119bool MediaStreamTrack::ended() const 120{ 121 return m_stopped || (m_component->source()->readyState() == MediaStreamSource::ReadyStateEnded); 122} 123 124void MediaStreamTrack::sourceChangedState() 125{ 126 if (m_stopped) 127 return; 128 129 switch (m_component->source()->readyState()) { 130 case MediaStreamSource::ReadyStateLive: 131 dispatchEvent(Event::create(eventNames().unmuteEvent, false, false)); 132 break; 133 case MediaStreamSource::ReadyStateMuted: 134 dispatchEvent(Event::create(eventNames().muteEvent, false, false)); 135 break; 136 case MediaStreamSource::ReadyStateEnded: 137 dispatchEvent(Event::create(eventNames().endedEvent, false, false)); 138 break; 139 } 140} 141 142MediaStreamComponent* MediaStreamTrack::component() 143{ 144 return m_component.get(); 145} 146 147void MediaStreamTrack::stop() 148{ 149 m_stopped = true; 150} 151 152const AtomicString& MediaStreamTrack::interfaceName() const 153{ 154 return eventNames().interfaceForMediaStreamTrack; 155} 156 157ScriptExecutionContext* MediaStreamTrack::scriptExecutionContext() const 158{ 159 return ActiveDOMObject::scriptExecutionContext(); 160} 161 162EventTargetData* MediaStreamTrack::eventTargetData() 163{ 164 return &m_eventTargetData; 165} 166 167EventTargetData* MediaStreamTrack::ensureEventTargetData() 168{ 169 return &m_eventTargetData; 170} 171 172} // namespace WebCore 173 174#endif // ENABLE(MEDIA_STREAM) 175