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
41typedef const struct __CFDictionary* CFDictionaryRef;
42typedef 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.
48struct QTCVTimeStamp;
49
50class QTMovieVisualContextClient {
51public:
52    virtual void imageAvailableForTime(const QTCVTimeStamp*) = 0;
53};
54
55class QTMOVIEWIN_API QTMovieVisualContext : public RefCounted<QTMovieVisualContext> {
56public:
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
71protected:
72    QTMovieVisualContext(QTMovieVisualContextClient*, QTPixelBuffer::Type);
73    void setupVisualContext();
74
75    friend class QTMovieVisualContextPriv;
76    OwnPtr<QTMovieVisualContextPriv> m_private;
77};
78
79#endif
80