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 HTMLMediaSource_h 32 #define HTMLMediaSource_h 33 34 #include "core/html/HTMLMediaElement.h" 35 #include "core/html/URLRegistry.h" 36 #include "wtf/Forward.h" 37 38 namespace WebCore { 39 40 class MediaSourcePrivate; 41 class TimeRanges; 42 43 class HTMLMediaSource : public URLRegistrable { 44 public: 45 static void setRegistry(URLRegistry*); 46 static HTMLMediaSource* lookup(const String& url) { return s_registry ? static_cast<HTMLMediaSource*>(s_registry->lookup(url)) : 0; } 47 48 void ref() { refHTMLMediaSource(); } 49 void deref() { derefHTMLMediaSource(); } 50 51 // Called when an HTMLMediaElement is attempting to attach to this object, 52 // and helps enforce attachment to at most one element at a time. 53 // If already attached, returns false. Otherwise, must be in 54 // 'closed' state, and returns true to indicate attachment success. 55 // Reattachment allowed by first calling close() (even if already in 'closed'). 56 // Once attached, the source uses the element to synchronously service some 57 // API operations like duration change that may need to initiate seek. 58 virtual bool attachToElement(HTMLMediaElement*) = 0; 59 virtual void setPrivateAndOpen(PassOwnPtr<MediaSourcePrivate>) = 0; 60 virtual void close() = 0; 61 virtual bool isClosed() const = 0; 62 virtual double duration() const = 0; 63 virtual PassRefPtr<TimeRanges> buffered() const = 0; 64 virtual void refHTMLMediaSource() = 0; 65 virtual void derefHTMLMediaSource() = 0; 66 67 // URLRegistrable 68 virtual URLRegistry& registry() const OVERRIDE { return *s_registry; } 69 70 private: 71 static URLRegistry* s_registry; 72 }; 73 74 } 75 76 #endif 77