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 QTPixelBuffer_h
27#define QTPixelBuffer_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 <stdint.h>
36
37typedef struct __CVBuffer *CVBufferRef;
38typedef CVBufferRef CVPixelBufferRef;
39typedef struct CGImage* CGImageRef;
40typedef int32_t CVReturn;
41typedef const struct __CFDictionary * CFDictionaryRef;
42
43// QTPixelBuffer wraps QuickTime's implementation of CVPixelBuffer, so its functions are
44// safe to call within WebKit.
45class QTMOVIEWIN_API QTPixelBuffer {
46public:
47    enum Type { ConfigureForCGImage, ConfigureForCAImageQueue };
48    static CFDictionaryRef createPixelBufferAttributesDictionary(Type);
49
50    QTPixelBuffer();
51    QTPixelBuffer(const QTPixelBuffer&);
52    QTPixelBuffer(CVPixelBufferRef);
53    QTPixelBuffer& operator=(const QTPixelBuffer&);
54    ~QTPixelBuffer();
55
56    void set(CVPixelBufferRef);
57    CVPixelBufferRef pixelBufferRef();
58    void adopt(CVPixelBufferRef);
59    void clear();
60
61    CVReturn lockBaseAddress();
62    CVReturn unlockBaseAddress();
63    void* baseAddress();
64
65    size_t width() const;
66    size_t height() const;
67    unsigned long pixelFormatType() const;
68    bool pixelFormatIs32ARGB() const;
69    bool pixelFormatIs32BGRA() const;
70    size_t bytesPerRow() const;
71    size_t dataSize() const;
72
73    bool isPlanar() const;
74    size_t planeCount() const;
75    size_t widthOfPlane(size_t) const;
76    size_t heightOfPlane(size_t) const;
77    void* baseAddressOfPlane(size_t) const;
78    size_t bytesPerRowOfPlane(size_t) const;
79
80    void getExtendedPixels(size_t* left, size_t* right, size_t* top, size_t* bottom) const;
81    CFDictionaryRef attachments() const;
82
83    // Generic CFRetain/CFRelease callbacks
84    static void releaseCallback(void* refcon);
85    static void retainCallback(void* refcon);
86
87    // CAImageQueue callbacks
88    static void imageQueueReleaseCallback(unsigned int type, uint64_t id, void* refcon);
89
90    // CGDataProvider callbacks
91    static void dataProviderReleaseBytePointerCallback(void* refcon, const void* pointer);
92    static const void* dataProviderGetBytePointerCallback(void* refcon);
93    static size_t dataProviderGetBytesAtPositionCallback(void* refcon, void* buffer, size_t position, size_t count);
94    static void dataProviderReleaseInfoCallback(void* refcon);
95
96private:
97    CVPixelBufferRef m_pixelBuffer;
98};
99
100#endif
101