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 SourceBuffer_h 32 #define SourceBuffer_h 33 34 #include "bindings/v8/ScriptWrappable.h" 35 #include "core/dom/ActiveDOMObject.h" 36 #include "core/fileapi/FileReaderLoaderClient.h" 37 #include "modules/EventTargetModules.h" 38 #include "platform/AsyncMethodRunner.h" 39 #include "platform/weborigin/KURL.h" 40 #include "wtf/OwnPtr.h" 41 #include "wtf/PassOwnPtr.h" 42 #include "wtf/PassRefPtr.h" 43 #include "wtf/RefCounted.h" 44 #include "wtf/RefPtr.h" 45 #include "wtf/text/WTFString.h" 46 47 namespace blink { 48 class WebSourceBuffer; 49 } 50 51 namespace WebCore { 52 53 class ExceptionState; 54 class FileReaderLoader; 55 class GenericEventQueue; 56 class MediaSource; 57 class Stream; 58 class TimeRanges; 59 60 class SourceBuffer FINAL : public RefCountedWillBeRefCountedGarbageCollected<SourceBuffer>, public ActiveDOMObject, public EventTargetWithInlineData, public ScriptWrappable, public FileReaderLoaderClient { 61 REFCOUNTED_EVENT_TARGET(SourceBuffer); 62 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SourceBuffer); 63 public: 64 static PassRefPtrWillBeRawPtr<SourceBuffer> create(PassOwnPtr<blink::WebSourceBuffer>, MediaSource*, GenericEventQueue*); 65 static const AtomicString& segmentsKeyword(); 66 static const AtomicString& sequenceKeyword(); 67 68 virtual ~SourceBuffer(); 69 70 // SourceBuffer.idl methods mode()71 const AtomicString& mode() const { return m_mode; } 72 void setMode(const AtomicString&, ExceptionState&); updating()73 bool updating() const { return m_updating; } 74 PassRefPtr<TimeRanges> buffered(ExceptionState&) const; 75 double timestampOffset() const; 76 void setTimestampOffset(double, ExceptionState&); 77 void appendBuffer(PassRefPtr<ArrayBuffer> data, ExceptionState&); 78 void appendBuffer(PassRefPtr<ArrayBufferView> data, ExceptionState&); 79 void appendStream(PassRefPtrWillBeRawPtr<Stream>, ExceptionState&); 80 void appendStream(PassRefPtrWillBeRawPtr<Stream>, unsigned long long maxSize, ExceptionState&); 81 void abort(ExceptionState&); 82 void remove(double start, double end, ExceptionState&); 83 double appendWindowStart() const; 84 void setAppendWindowStart(double, ExceptionState&); 85 double appendWindowEnd() const; 86 void setAppendWindowEnd(double, ExceptionState&); 87 88 void abortIfUpdating(); 89 void removedFromMediaSource(); 90 91 // ActiveDOMObject interface 92 virtual bool hasPendingActivity() const OVERRIDE; 93 virtual void suspend() OVERRIDE; 94 virtual void resume() OVERRIDE; 95 virtual void stop() OVERRIDE; 96 97 // EventTarget interface 98 virtual ExecutionContext* executionContext() const OVERRIDE; 99 virtual const AtomicString& interfaceName() const OVERRIDE; 100 101 virtual void trace(Visitor*) OVERRIDE; 102 103 private: 104 SourceBuffer(PassOwnPtr<blink::WebSourceBuffer>, MediaSource*, GenericEventQueue*); 105 106 bool isRemoved() const; 107 void scheduleEvent(const AtomicString& eventName); 108 109 void appendBufferInternal(const unsigned char*, unsigned, ExceptionState&); 110 void appendBufferAsyncPart(); 111 112 void removeAsyncPart(); 113 114 void appendStreamInternal(PassRefPtrWillBeRawPtr<Stream>, ExceptionState&); 115 void appendStreamAsyncPart(); 116 void appendStreamDone(bool success); 117 void clearAppendStreamState(); 118 119 // FileReaderLoaderClient interface 120 virtual void didStartLoading() OVERRIDE; 121 virtual void didReceiveDataForClient(const char* data, unsigned dataLength) OVERRIDE; 122 virtual void didFinishLoading() OVERRIDE; 123 virtual void didFail(FileError::ErrorCode) OVERRIDE; 124 125 OwnPtr<blink::WebSourceBuffer> m_webSourceBuffer; 126 RawPtrWillBeMember<MediaSource> m_source; 127 GenericEventQueue* m_asyncEventQueue; 128 129 AtomicString m_mode; 130 bool m_updating; 131 double m_timestampOffset; 132 double m_appendWindowStart; 133 double m_appendWindowEnd; 134 135 Vector<unsigned char> m_pendingAppendData; 136 size_t m_pendingAppendDataOffset; 137 AsyncMethodRunner<SourceBuffer> m_appendBufferAsyncPartRunner; 138 139 double m_pendingRemoveStart; 140 double m_pendingRemoveEnd; 141 AsyncMethodRunner<SourceBuffer> m_removeAsyncPartRunner; 142 143 bool m_streamMaxSizeValid; 144 unsigned long long m_streamMaxSize; 145 AsyncMethodRunner<SourceBuffer> m_appendStreamAsyncPartRunner; 146 RefPtrWillBeMember<Stream> m_stream; 147 OwnPtr<FileReaderLoader> m_loader; 148 }; 149 150 } // namespace WebCore 151 152 #endif 153