1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "Image.h"
28#include <wtf/CheckedArithmetic.h>
29#include <wtf/RefPtr.h>
30#include <wtf/RetainPtr.h>
31#include <wtf/Uint8ClampedArray.h>
32
33#if (PLATFORM(MAC) && USE(CA) && (PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070))
34#define WTF_USE_IOSURFACE_CANVAS_BACKING_STORE 1
35#endif
36
37typedef struct __IOSurface *IOSurfaceRef;
38typedef struct CGColorSpace *CGColorSpaceRef;
39typedef struct CGDataProvider *CGDataProviderRef;
40typedef uint32_t CGBitmapInfo;
41
42namespace WebCore {
43
44class IntSize;
45
46class ImageBufferData {
47public:
48    ImageBufferData(const IntSize&);
49
50    void* m_data;
51
52    RetainPtr<CGDataProviderRef> m_dataProvider;
53    CGBitmapInfo m_bitmapInfo;
54    Checked<unsigned, RecordOverflow> m_bytesPerRow;
55    CGColorSpaceRef m_colorSpace;
56    RetainPtr<IOSurfaceRef> m_surface;
57#if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED == 1070
58    mutable double m_lastFlushTime;
59#endif
60
61    PassRefPtr<Uint8ClampedArray> getData(const IntRect&, const IntSize&, bool accelerateRendering, bool unmultiplied, float resolutionScale) const;
62    void putData(Uint8ClampedArray*& source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, const IntSize&, bool accelerateRendering, bool unmultiplied, float resolutionScale);
63};
64
65} // namespace WebCore
66