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 MediaSource_h 32 #define MediaSource_h 33 34 #include "bindings/v8/ScriptWrappable.h" 35 #include "core/dom/ActiveDOMObject.h" 36 #include "core/events/EventTarget.h" 37 #include "core/html/HTMLMediaSource.h" 38 #include "core/html/URLRegistry.h" 39 #include "modules/mediasource/SourceBuffer.h" 40 #include "modules/mediasource/SourceBufferList.h" 41 #include "public/platform/WebMediaSource.h" 42 #include "wtf/PassOwnPtr.h" 43 #include "wtf/RefCounted.h" 44 #include "wtf/Vector.h" 45 46 namespace blink { 47 class WebSourceBuffer; 48 } 49 50 namespace WebCore { 51 52 class ExceptionState; 53 class GenericEventQueue; 54 55 class MediaSource FINAL 56 : public RefCountedWillBeRefCountedGarbageCollected<MediaSource> 57 , public HTMLMediaSource 58 , public ActiveDOMObject 59 , public EventTargetWithInlineData 60 , public ScriptWrappable { 61 REFCOUNTED_EVENT_TARGET(MediaSource); 62 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaSource); 63 public: 64 static const AtomicString& openKeyword(); 65 static const AtomicString& closedKeyword(); 66 static const AtomicString& endedKeyword(); 67 68 static PassRefPtrWillBeRawPtr<MediaSource> create(ExecutionContext*); 69 virtual ~MediaSource(); 70 71 // MediaSource.idl methods sourceBuffers()72 SourceBufferList* sourceBuffers() { return m_sourceBuffers.get(); } activeSourceBuffers()73 SourceBufferList* activeSourceBuffers() { return m_activeSourceBuffers.get(); } 74 SourceBuffer* addSourceBuffer(const String& type, ExceptionState&); 75 void removeSourceBuffer(SourceBuffer*, ExceptionState&); 76 void setDuration(double, ExceptionState&); readyState()77 const AtomicString& readyState() const { return m_readyState; } 78 void endOfStream(const AtomicString& error, ExceptionState&); 79 void endOfStream(ExceptionState&); 80 static bool isTypeSupported(const String& type); 81 82 // HTMLMediaSource 83 virtual bool attachToElement(HTMLMediaElement*) OVERRIDE; 84 virtual void setWebMediaSourceAndOpen(PassOwnPtr<blink::WebMediaSource>) OVERRIDE; 85 virtual void close() OVERRIDE; 86 virtual bool isClosed() const OVERRIDE; 87 virtual double duration() const OVERRIDE; 88 virtual PassRefPtr<TimeRanges> buffered() const OVERRIDE; refHTMLMediaSource()89 virtual void refHTMLMediaSource() OVERRIDE { ref(); } derefHTMLMediaSource()90 virtual void derefHTMLMediaSource() OVERRIDE { deref(); } 91 92 // EventTarget interface 93 virtual const AtomicString& interfaceName() const OVERRIDE; 94 virtual ExecutionContext* executionContext() const OVERRIDE; 95 96 // ActiveDOMObject interface 97 virtual bool hasPendingActivity() const OVERRIDE; 98 virtual void stop() OVERRIDE; 99 100 // URLRegistrable interface 101 virtual URLRegistry& registry() const OVERRIDE; 102 103 // Used by SourceBuffer. 104 void openIfInEndedState(); 105 bool isOpen() const; 106 107 // Used by MediaSourceRegistry. 108 void addedToRegistry(); 109 void removedFromRegistry(); 110 111 void trace(Visitor*); 112 113 private: 114 explicit MediaSource(ExecutionContext*); 115 116 void setReadyState(const AtomicString&); 117 void onReadyStateChange(const AtomicString&, const AtomicString&); 118 119 bool isUpdating() const; 120 121 PassOwnPtr<blink::WebSourceBuffer> createWebSourceBuffer(const String& type, const Vector<String>& codecs, ExceptionState&); 122 void scheduleEvent(const AtomicString& eventName); 123 void endOfStreamInternal(const blink::WebMediaSource::EndOfStreamStatus, ExceptionState&); 124 125 // Implements the duration change algorithm. 126 // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#duration-change-algorithm 127 void durationChangeAlgorithm(double newDuration); 128 129 OwnPtr<blink::WebMediaSource> m_webMediaSource; 130 AtomicString m_readyState; 131 OwnPtrWillBeMember<GenericEventQueue> m_asyncEventQueue; 132 // FIXME: oilpan: This should become a Member. For now, m_attachedElement will be cleared by the HTMLMediaElement destructor. 133 HTMLMediaElement* m_attachedElement; 134 135 RefPtrWillBeMember<SourceBufferList> m_sourceBuffers; 136 RefPtrWillBeMember<SourceBufferList> m_activeSourceBuffers; 137 }; 138 139 } // namespace WebCore 140 141 #endif 142