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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 "modules/mediasource/SourceBuffer.h"
39 #include "modules/mediasource/SourceBufferList.h"
40 #include "public/platform/WebMediaSource.h"
41 #include "wtf/PassOwnPtr.h"
42 #include "wtf/Vector.h"
47 class GenericEventQueue;
48 class WebSourceBuffer;
50 class MediaSource FINAL
51 : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<MediaSource>
52 , public HTMLMediaSource
53 , public ActiveDOMObject
54 , public EventTargetWithInlineData {
55 DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<MediaSource>);
56 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaSource);
58 static const AtomicString& openKeyword();
59 static const AtomicString& closedKeyword();
60 static const AtomicString& endedKeyword();
62 static MediaSource* create(ExecutionContext*);
63 virtual ~MediaSource();
65 // MediaSource.idl methods
66 SourceBufferList* sourceBuffers() { return m_sourceBuffers.get(); }
67 SourceBufferList* activeSourceBuffers() { return m_activeSourceBuffers.get(); }
68 SourceBuffer* addSourceBuffer(const String& type, ExceptionState&);
69 void removeSourceBuffer(SourceBuffer*, ExceptionState&);
70 void setDuration(double, ExceptionState&);
71 const AtomicString& readyState() const { return m_readyState; }
72 void endOfStream(const AtomicString& error, ExceptionState&);
73 void endOfStream(ExceptionState&);
74 static bool isTypeSupported(const String& type);
77 virtual bool attachToElement(HTMLMediaElement*) OVERRIDE;
78 virtual void setWebMediaSourceAndOpen(PassOwnPtr<WebMediaSource>) OVERRIDE;
79 virtual void close() OVERRIDE;
80 virtual bool isClosed() const OVERRIDE;
81 virtual double duration() const OVERRIDE;
82 virtual PassRefPtrWillBeRawPtr<TimeRanges> buffered() const OVERRIDE;
84 virtual void refHTMLMediaSource() OVERRIDE { ref(); }
85 virtual void derefHTMLMediaSource() OVERRIDE { deref(); }
88 // EventTarget interface
89 virtual const AtomicString& interfaceName() const OVERRIDE;
90 virtual ExecutionContext* executionContext() const OVERRIDE;
92 // ActiveDOMObject interface
93 virtual bool hasPendingActivity() const OVERRIDE;
94 virtual void stop() OVERRIDE;
96 // URLRegistrable interface
97 virtual URLRegistry& registry() const OVERRIDE;
99 // Used by SourceBuffer.
100 void openIfInEndedState();
103 // Used by MediaSourceRegistry.
104 void addedToRegistry();
105 void removedFromRegistry();
107 void trace(Visitor*);
108 void clearWeakMembers(Visitor*);
111 explicit MediaSource(ExecutionContext*);
113 void setReadyState(const AtomicString&);
114 void onReadyStateChange(const AtomicString&, const AtomicString&);
116 bool isUpdating() const;
118 PassOwnPtr<WebSourceBuffer> createWebSourceBuffer(const String& type, const Vector<String>& codecs, ExceptionState&);
119 void scheduleEvent(const AtomicString& eventName);
120 void endOfStreamInternal(const WebMediaSource::EndOfStreamStatus, ExceptionState&);
122 // Implements the duration change algorithm.
123 // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#duration-change-algorithm
124 void durationChangeAlgorithm(double newDuration);
126 OwnPtr<WebMediaSource> m_webMediaSource;
127 AtomicString m_readyState;
128 OwnPtrWillBeMember<GenericEventQueue> m_asyncEventQueue;
129 RawPtrWillBeWeakMember<HTMLMediaElement> m_attachedElement;
131 Member<SourceBufferList> m_sourceBuffers;
132 Member<SourceBufferList> m_activeSourceBuffers;
134 bool m_isAddedToRegistry;