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/events/EventTarget.h" 36 #include "core/html/HTMLMediaSource.h" 37 #include "core/html/URLRegistry.h" 38 #include "wtf/PassOwnPtr.h" 39 #include "wtf/RefCounted.h" 40 #include "wtf/Vector.h" 41 42 namespace blink { 43 class WebMediaSource; 44 class WebSourceBuffer; 45 } 46 47 namespace WebCore { 48 49 class ExceptionState; 50 class GenericEventQueue; 51 52 class MediaSourceBase : public RefCounted<MediaSourceBase>, public HTMLMediaSource, public ActiveDOMObject, public EventTargetWithInlineData { 53 REFCOUNTED_EVENT_TARGET(MediaSourceBase); 54 public: 55 static const AtomicString& openKeyword(); 56 static const AtomicString& closedKeyword(); 57 static const AtomicString& endedKeyword(); 58 59 virtual ~MediaSourceBase(); 60 61 void addedToRegistry(); 62 void removedFromRegistry(); 63 void openIfInEndedState(); 64 bool isOpen() const; 65 66 // HTMLMediaSource 67 virtual bool attachToElement(HTMLMediaElement*) OVERRIDE; 68 virtual void setWebMediaSourceAndOpen(PassOwnPtr<blink::WebMediaSource>) OVERRIDE; 69 virtual void close() OVERRIDE; 70 virtual bool isClosed() const OVERRIDE; 71 virtual double duration() const OVERRIDE; 72 virtual PassRefPtr<TimeRanges> buffered() const OVERRIDE; refHTMLMediaSource()73 virtual void refHTMLMediaSource() OVERRIDE { ref(); } derefHTMLMediaSource()74 virtual void derefHTMLMediaSource() OVERRIDE { deref(); } 75 76 void setDuration(double, ExceptionState&); readyState()77 const AtomicString& readyState() const { return m_readyState; } 78 void setReadyState(const AtomicString&); 79 void endOfStream(const AtomicString& error, ExceptionState&); 80 81 82 // ActiveDOMObject interface 83 virtual bool hasPendingActivity() const OVERRIDE; 84 virtual void stop() OVERRIDE; 85 86 // EventTarget interface 87 virtual ExecutionContext* executionContext() const OVERRIDE; 88 89 // URLRegistrable interface 90 virtual URLRegistry& registry() const OVERRIDE; 91 92 protected: 93 explicit MediaSourceBase(ExecutionContext*); 94 95 virtual void onReadyStateChange(const AtomicString& oldState, const AtomicString& newState) = 0; 96 virtual Vector<RefPtr<TimeRanges> > activeRanges() const = 0; 97 98 PassOwnPtr<blink::WebSourceBuffer> createWebSourceBuffer(const String& type, const Vector<String>& codecs, ExceptionState&); 99 void scheduleEvent(const AtomicString& eventName); asyncEventQueue()100 GenericEventQueue* asyncEventQueue() const { return m_asyncEventQueue.get(); } 101 102 private: 103 OwnPtr<blink::WebMediaSource> m_webMediaSource; 104 AtomicString m_readyState; 105 OwnPtr<GenericEventQueue> m_asyncEventQueue; 106 HTMLMediaElement* m_attachedElement; 107 }; 108 109 } 110 111 #endif 112