1/* 2 * Copyright (C) 2013 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef MediaSourceBase_h 32#define MediaSourceBase_h 33 34#include "core/dom/ActiveDOMObject.h" 35#include "core/dom/EventTarget.h" 36#include "core/html/HTMLMediaSource.h" 37#include "core/html/URLRegistry.h" 38#include "core/platform/graphics/MediaSourcePrivate.h" 39#include "wtf/PassOwnPtr.h" 40#include "wtf/RefCounted.h" 41#include "wtf/Vector.h" 42 43namespace WebCore { 44 45class ExceptionState; 46class GenericEventQueue; 47 48class MediaSourceBase : public RefCounted<MediaSourceBase>, public HTMLMediaSource, public ActiveDOMObject, public EventTarget { 49public: 50 static const AtomicString& openKeyword(); 51 static const AtomicString& closedKeyword(); 52 static const AtomicString& endedKeyword(); 53 54 virtual ~MediaSourceBase(); 55 56 void addedToRegistry(); 57 void removedFromRegistry(); 58 void openIfInEndedState(); 59 bool isOpen() const; 60 61 // HTMLMediaSource 62 virtual bool attachToElement(HTMLMediaElement*) OVERRIDE; 63 virtual void setPrivateAndOpen(PassOwnPtr<MediaSourcePrivate>) OVERRIDE; 64 virtual void close() OVERRIDE; 65 virtual bool isClosed() const OVERRIDE; 66 virtual double duration() const OVERRIDE; 67 virtual PassRefPtr<TimeRanges> buffered() const OVERRIDE; 68 virtual void refHTMLMediaSource() OVERRIDE { ref(); } 69 virtual void derefHTMLMediaSource() OVERRIDE { deref(); } 70 71 void setDuration(double, ExceptionState&); 72 const AtomicString& readyState() const { return m_readyState; } 73 void setReadyState(const AtomicString&); 74 void endOfStream(const AtomicString& error, ExceptionState&); 75 76 77 // ActiveDOMObject interface 78 virtual bool hasPendingActivity() const OVERRIDE; 79 virtual void stop() OVERRIDE; 80 81 // EventTarget interface 82 virtual ScriptExecutionContext* scriptExecutionContext() const OVERRIDE; 83 virtual EventTargetData* eventTargetData() OVERRIDE; 84 virtual EventTargetData* ensureEventTargetData() OVERRIDE; 85 virtual void refEventTarget() OVERRIDE { ref(); } 86 virtual void derefEventTarget() OVERRIDE { deref(); } 87 88 // URLRegistrable interface 89 virtual URLRegistry& registry() const OVERRIDE; 90 91 using RefCounted<MediaSourceBase>::ref; 92 using RefCounted<MediaSourceBase>::deref; 93 94protected: 95 explicit MediaSourceBase(ScriptExecutionContext*); 96 97 virtual void onReadyStateChange(const AtomicString& oldState, const AtomicString& newState) = 0; 98 virtual Vector<RefPtr<TimeRanges> > activeRanges() const = 0; 99 100 PassOwnPtr<SourceBufferPrivate> createSourceBufferPrivate(const String& type, const MediaSourcePrivate::CodecsArray&, ExceptionState&); 101 void scheduleEvent(const AtomicString& eventName); 102 GenericEventQueue* asyncEventQueue() const { return m_asyncEventQueue.get(); } 103 104private: 105 OwnPtr<MediaSourcePrivate> m_private; 106 EventTargetData m_eventTargetData; 107 AtomicString m_readyState; 108 OwnPtr<GenericEventQueue> m_asyncEventQueue; 109 HTMLMediaElement* m_attachedElement; 110}; 111 112} 113 114#endif 115