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