1 /* 2 * Copyright (C) 2007, 2008, 2009, 2010 Apple, 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef QTMovieVisualContext_h 27 #define QTMovieVisualContext_h 28 29 #ifdef QTMOVIEWIN_EXPORTS 30 #define QTMOVIEWIN_API __declspec(dllexport) 31 #else 32 #define QTMOVIEWIN_API __declspec(dllimport) 33 #endif 34 35 #include "QTMovie.h" 36 #include "QTMovieTask.h" 37 #include "QTPixelBuffer.h" 38 #include <WTF/OwnPtr.h> 39 #include <WTF/RefCounted.h> 40 41 typedef const struct __CFDictionary* CFDictionaryRef; 42 typedef struct OpaqueQTVisualContext* QTVisualContextRef; 43 44 // QTCVTimeStamp is a struct containing only a CVTimeStamp. This is to 45 // work around the inability of CVTimeStamp to be forward declared, in 46 // addition to it being declared in different header files when building 47 // the QTMovieWin and WebCore projects. 48 struct QTCVTimeStamp; 49 50 class QTMovieVisualContextClient { 51 public: 52 virtual void imageAvailableForTime(const QTCVTimeStamp*) = 0; 53 }; 54 55 class QTMOVIEWIN_API QTMovieVisualContext : public RefCounted<QTMovieVisualContext> { 56 public: 57 static PassRefPtr<QTMovieVisualContext> create(QTMovieVisualContextClient*, QTPixelBuffer::Type); 58 ~QTMovieVisualContext(); 59 60 bool isImageAvailableForTime(const QTCVTimeStamp*) const; 61 QTPixelBuffer imageForTime(const QTCVTimeStamp*); 62 void task(); 63 64 QTVisualContextRef visualContextRef(); 65 66 void setMovie(PassRefPtr<QTMovie>); 67 QTMovie* movie() const; 68 69 static double currentHostTime(); 70 71 protected: 72 QTMovieVisualContext(QTMovieVisualContextClient*, QTPixelBuffer::Type); 73 void setupVisualContext(); 74 75 friend class QTMovieVisualContextPriv; 76 OwnPtr<QTMovieVisualContextPriv> m_private; 77 }; 78 79 #endif 80