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      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 
     34 namespace WebCore {
     35 
     36 class HTMLMediaElement;
     37 
     38 class TrackBase : public RefCountedWillBeRefCountedGarbageCollected<TrackBase> {
     39 public:
     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 
     65 protected:
     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 
     71 private:
     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 } // namespace WebCore
     82 
     83 #endif // TrackBase_h
     84