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 "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" 43 44 namespace blink { 45 46 class ExceptionState; 47 class GenericEventQueue; 48 class WebSourceBuffer; 49 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 DEFINE_WRAPPERTYPEINFO(); 57 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaSource); 58 public: 59 static const AtomicString& openKeyword(); 60 static const AtomicString& closedKeyword(); 61 static const AtomicString& endedKeyword(); 62 63 static MediaSource* create(ExecutionContext*); 64 virtual ~MediaSource(); 65 66 // MediaSource.idl methods 67 SourceBufferList* sourceBuffers() { return m_sourceBuffers.get(); } 68 SourceBufferList* activeSourceBuffers() { return m_activeSourceBuffers.get(); } 69 SourceBuffer* addSourceBuffer(const String& type, ExceptionState&); 70 void removeSourceBuffer(SourceBuffer*, ExceptionState&); 71 void setDuration(double, ExceptionState&); 72 const AtomicString& readyState() const { return m_readyState; } 73 void endOfStream(const AtomicString& error, ExceptionState&); 74 void endOfStream(ExceptionState&); 75 static bool isTypeSupported(const String& type); 76 77 // HTMLMediaSource 78 virtual bool attachToElement(HTMLMediaElement*) OVERRIDE; 79 virtual void setWebMediaSourceAndOpen(PassOwnPtr<WebMediaSource>) OVERRIDE; 80 virtual void close() OVERRIDE; 81 virtual bool isClosed() const OVERRIDE; 82 virtual double duration() const OVERRIDE; 83 virtual PassRefPtrWillBeRawPtr<TimeRanges> buffered() const OVERRIDE; 84 #if !ENABLE(OILPAN) 85 virtual void refHTMLMediaSource() OVERRIDE { ref(); } 86 virtual void derefHTMLMediaSource() OVERRIDE { deref(); } 87 #endif 88 89 // EventTarget interface 90 virtual const AtomicString& interfaceName() const OVERRIDE; 91 virtual ExecutionContext* executionContext() const OVERRIDE; 92 93 // ActiveDOMObject interface 94 virtual bool hasPendingActivity() const OVERRIDE; 95 virtual void stop() OVERRIDE; 96 97 // URLRegistrable interface 98 virtual URLRegistry& registry() const OVERRIDE; 99 100 // Used by SourceBuffer. 101 void openIfInEndedState(); 102 bool isOpen() const; 103 void setSourceBufferActive(SourceBuffer*); 104 105 // Used by MediaSourceRegistry. 106 void addedToRegistry(); 107 void removedFromRegistry(); 108 109 void trace(Visitor*); 110 void clearWeakMembers(Visitor*); 111 112 private: 113 explicit MediaSource(ExecutionContext*); 114 115 void setReadyState(const AtomicString&); 116 void onReadyStateChange(const AtomicString&, const AtomicString&); 117 118 bool isUpdating() const; 119 120 PassOwnPtr<WebSourceBuffer> createWebSourceBuffer(const String& type, const Vector<String>& codecs, ExceptionState&); 121 void scheduleEvent(const AtomicString& eventName); 122 void endOfStreamInternal(const WebMediaSource::EndOfStreamStatus, ExceptionState&); 123 124 // Implements the duration change algorithm. 125 // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#duration-change-algorithm 126 void durationChangeAlgorithm(double newDuration); 127 128 OwnPtr<WebMediaSource> m_webMediaSource; 129 AtomicString m_readyState; 130 OwnPtrWillBeMember<GenericEventQueue> m_asyncEventQueue; 131 RawPtrWillBeWeakMember<HTMLMediaElement> m_attachedElement; 132 133 Member<SourceBufferList> m_sourceBuffers; 134 Member<SourceBufferList> m_activeSourceBuffers; 135 136 bool m_isAddedToRegistry; 137 }; 138 139 } // namespace blink 140 141 #endif // MediaSource_h 142
