1/*
2 * Copyright (C) 2011 Apple 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef TrackBase_h
27#define TrackBase_h
28
29#include "platform/heap/Handle.h"
30#include "public/platform/WebMediaPlayer.h"
31#include "wtf/RefCounted.h"
32#include "wtf/text/AtomicString.h"
33
34namespace blink {
35
36class HTMLMediaElement;
37
38class TrackBase : public RefCountedWillBeGarbageCollectedFinalized<TrackBase> {
39public:
40    virtual ~TrackBase();
41
42    blink::WebMediaPlayer::TrackId trackId() const { return m_trackId; }
43
44    enum Type { TextTrack, AudioTrack, VideoTrack };
45    Type type() const { return m_type; }
46
47    const AtomicString& kind() const { return m_kind; }
48    virtual void setKind(const AtomicString&);
49
50    AtomicString label() const { return m_label; }
51    void setLabel(const AtomicString& label) { m_label = label; }
52
53    AtomicString language() const { return m_language; }
54    void setLanguage(const AtomicString& language) { m_language = language; }
55
56    String id() const { return m_id; }
57    void setId(const String& id) { m_id = id; }
58
59    void setMediaElement(HTMLMediaElement* mediaElement) { m_mediaElement = mediaElement; }
60    HTMLMediaElement* mediaElement() const { return m_mediaElement; }
61    Node* owner() const;
62
63    virtual void trace(Visitor*);
64
65protected:
66    TrackBase(Type, const AtomicString& label, const AtomicString& language, const String& id);
67
68    virtual bool isValidKind(const AtomicString&) const = 0;
69    virtual AtomicString defaultKind() const = 0;
70
71private:
72    blink::WebMediaPlayer::TrackId m_trackId;
73    Type m_type;
74    AtomicString m_kind;
75    AtomicString m_label;
76    AtomicString m_language;
77    String m_id;
78    RawPtrWillBeMember<HTMLMediaElement> m_mediaElement;
79};
80
81#define DEFINE_TRACK_TYPE_CASTS(thisType, predicate) \
82    DEFINE_TYPE_CASTS(thisType, TrackBase, track, track->type() == predicate, track.type() == predicate)
83
84} // namespace blink
85
86#endif // TrackBase_h
87