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/events/EventTarget.h" 37 #include "core/fileapi/FileReaderLoaderClient.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 : public RefCounted<SourceBuffer>, public ActiveDOMObject, public EventTargetWithInlineData, public ScriptWrappable, public FileReaderLoaderClient { 61 REFCOUNTED_EVENT_TARGET(SourceBuffer); 62 public: 63 static PassRefPtr<SourceBuffer> create(PassOwnPtr<blink::WebSourceBuffer>, MediaSource*, GenericEventQueue*); 64 65 virtual ~SourceBuffer(); 66 67 // SourceBuffer.idl methods updating()68 bool updating() const { return m_updating; } 69 PassRefPtr<TimeRanges> buffered(ExceptionState&) const; 70 double timestampOffset() const; 71 void setTimestampOffset(double, ExceptionState&); 72 void appendBuffer(PassRefPtr<ArrayBuffer> data, ExceptionState&); 73 void appendBuffer(PassRefPtr<ArrayBufferView> data, ExceptionState&); 74 void appendStream(PassRefPtr<Stream>, ExceptionState&); 75 void appendStream(PassRefPtr<Stream>, unsigned long long maxSize, ExceptionState&); 76 void abort(ExceptionState&); 77 void remove(double start, double end, ExceptionState&); 78 double appendWindowStart() const; 79 void setAppendWindowStart(double, ExceptionState&); 80 double appendWindowEnd() const; 81 void setAppendWindowEnd(double, ExceptionState&); 82 83 void abortIfUpdating(); 84 void removedFromMediaSource(); 85 86 // ActiveDOMObject interface 87 virtual bool hasPendingActivity() const OVERRIDE; 88 virtual void suspend() OVERRIDE; 89 virtual void resume() OVERRIDE; 90 virtual void stop() OVERRIDE; 91 92 // EventTarget interface 93 virtual ExecutionContext* executionContext() const OVERRIDE; 94 virtual const AtomicString& interfaceName() const OVERRIDE; 95 96 private: 97 SourceBuffer(PassOwnPtr<blink::WebSourceBuffer>, MediaSource*, GenericEventQueue*); 98 99 bool isRemoved() const; 100 void scheduleEvent(const AtomicString& eventName); 101 102 void appendBufferInternal(const unsigned char*, unsigned, ExceptionState&); 103 void appendBufferAsyncPart(); 104 105 void removeAsyncPart(); 106 107 void appendStreamInternal(PassRefPtr<Stream>, ExceptionState&); 108 void appendStreamAsyncPart(); 109 void appendStreamDone(bool success); 110 void clearAppendStreamState(); 111 112 // FileReaderLoaderClient interface 113 virtual void didStartLoading() OVERRIDE; 114 virtual void didReceiveDataForClient(const char* data, unsigned dataLength) OVERRIDE; 115 virtual void didFinishLoading() OVERRIDE; 116 virtual void didFail(FileError::ErrorCode) OVERRIDE; 117 118 OwnPtr<blink::WebSourceBuffer> m_webSourceBuffer; 119 MediaSource* m_source; 120 GenericEventQueue* m_asyncEventQueue; 121 122 bool m_updating; 123 double m_timestampOffset; 124 double m_appendWindowStart; 125 double m_appendWindowEnd; 126 127 Vector<unsigned char> m_pendingAppendData; 128 AsyncMethodRunner<SourceBuffer> m_appendBufferAsyncPartRunner; 129 130 double m_pendingRemoveStart; 131 double m_pendingRemoveEnd; 132 AsyncMethodRunner<SourceBuffer> m_removeAsyncPartRunner; 133 134 bool m_streamMaxSizeValid; 135 unsigned long long m_streamMaxSize; 136 AsyncMethodRunner<SourceBuffer> m_appendStreamAsyncPartRunner; 137 RefPtr<Stream> m_stream; 138 OwnPtr<FileReaderLoader> m_loader; 139 }; 140 141 } // namespace WebCore 142 143 #endif 144