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 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 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#if ENABLE(VIDEO_TRACK) 30 31#include "EventTarget.h" 32#include <wtf/RefCounted.h> 33 34namespace WebCore { 35 36class Element; 37class HTMLMediaElement; 38class SourceBuffer; 39 40class TrackBase : public RefCounted<TrackBase> { 41public: 42 virtual ~TrackBase(); 43 44 enum Type { BaseTrack, TextTrack, AudioTrack, VideoTrack }; 45 Type type() const { return m_type; } 46 47 void setMediaElement(HTMLMediaElement* element) { m_mediaElement = element; } 48 HTMLMediaElement* mediaElement() { return m_mediaElement; } 49 virtual Element* element(); 50 51 virtual AtomicString id() const { return m_id; } 52 virtual void setId(const AtomicString& id) { m_id = id; } 53 54 AtomicString kind() const { return m_kind; } 55 virtual void setKind(const AtomicString&); 56 57 AtomicString label() const { return m_label; } 58 void setLabel(const AtomicString& label) { m_label = label; } 59 60 AtomicString language() const { return m_language; } 61 virtual void setLanguage(const AtomicString& language) { m_language = language; } 62 63 virtual void clearClient() = 0; 64 65 virtual int uniqueId() const { return m_uniqueId; } 66 67#if ENABLE(MEDIA_SOURCE) 68 SourceBuffer* sourceBuffer() const { return m_sourceBuffer; } 69 void setSourceBuffer(SourceBuffer* buffer) { m_sourceBuffer = buffer; } 70#endif 71 72 virtual bool enabled() const = 0; 73 74protected: 75 TrackBase(Type, const AtomicString& id, const AtomicString& label, const AtomicString& language); 76 77 virtual bool isValidKind(const AtomicString&) const = 0; 78 virtual const AtomicString& defaultKindKeyword() const = 0; 79 80 void setKindInternal(const AtomicString&); 81 82 HTMLMediaElement* m_mediaElement; 83 84#if ENABLE(MEDIA_SOURCE) 85 SourceBuffer* m_sourceBuffer; 86#endif 87 88private: 89 Type m_type; 90 int m_uniqueId; 91 AtomicString m_id; 92 AtomicString m_kind; 93 AtomicString m_label; 94 AtomicString m_language; 95}; 96 97} // namespace WebCore 98 99#endif 100#endif // TrackBase_h 101