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#ifndef MediaStreamTrack_h 27#define MediaStreamTrack_h 28 29#if ENABLE(MEDIA_STREAM) 30 31#include "ActiveDOMObject.h" 32#include "EventTarget.h" 33#include "MediaStreamDescriptor.h" 34#include "MediaStreamSource.h" 35#include <wtf/RefCounted.h> 36#include <wtf/RefPtr.h> 37#include <wtf/Vector.h> 38#include <wtf/text/WTFString.h> 39 40namespace WebCore { 41 42class MediaStreamComponent; 43 44class MediaStreamTrack : public RefCounted<MediaStreamTrack>, public ActiveDOMObject, public EventTarget, public MediaStreamSource::Observer { 45public: 46 static PassRefPtr<MediaStreamTrack> create(ScriptExecutionContext*, MediaStreamComponent*); 47 virtual ~MediaStreamTrack(); 48 49 String kind() const; 50 String id() const; 51 String label() const; 52 53 bool enabled() const; 54 void setEnabled(bool); 55 56 String readyState() const; 57 58 DEFINE_ATTRIBUTE_EVENT_LISTENER(mute); 59 DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute); 60 DEFINE_ATTRIBUTE_EVENT_LISTENER(ended); 61 62 MediaStreamComponent* component(); 63 bool ended() const; 64 65 // EventTarget 66 virtual const AtomicString& interfaceName() const OVERRIDE; 67 virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE; 68 69 // ActiveDOMObject 70 virtual void stop() OVERRIDE; 71 72 using RefCounted<MediaStreamTrack>::ref; 73 using RefCounted<MediaStreamTrack>::deref; 74 75private: 76 MediaStreamTrack(ScriptExecutionContext*, MediaStreamComponent*); 77 78 // EventTarget 79 virtual EventTargetData* eventTargetData() OVERRIDE; 80 virtual EventTargetData* ensureEventTargetData() OVERRIDE; 81 virtual void refEventTarget() OVERRIDE { ref(); } 82 virtual void derefEventTarget() OVERRIDE { deref(); } 83 EventTargetData m_eventTargetData; 84 85 // MediaStreamSourceObserver 86 virtual void sourceChangedState() OVERRIDE; 87 88 bool m_stopped; 89 RefPtr<MediaStreamComponent> m_component; 90}; 91 92typedef Vector<RefPtr<MediaStreamTrack> > MediaStreamTrackVector; 93 94} // namespace WebCore 95 96#endif // ENABLE(MEDIA_STREAM) 97 98#endif // MediaStreamTrack_h 99