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1 /* | 1 /* |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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103 | 103 |
104 static void premultitplyScanline(void* data, size_t tileNumber) | 104 static void premultitplyScanline(void* data, size_t tileNumber) |
105 { | 105 { |
106 convertScanline(data, tileNumber, true); | 106 convertScanline(data, tileNumber, true); |
107 } | 107 } |
108 #endif // USE(IOSURFACE_CANVAS_BACKING_STORE) | 108 #endif // USE(IOSURFACE_CANVAS_BACKING_STORE) |
109 #endif // USE(ACCELERATE) | 109 #endif // USE(ACCELERATE) |
110 | 110 |
111 PassRefPtr<ByteArray> ImageBufferData::getData(const IntRect& rect, const IntSiz
e& size, bool accelerateRendering, bool unmultiplied) const | 111 PassRefPtr<ByteArray> ImageBufferData::getData(const IntRect& rect, const IntSiz
e& size, bool accelerateRendering, bool unmultiplied) const |
112 { | 112 { |
| 113 float area = 4.0f * rect.width() * rect.height(); |
| 114 if (area > static_cast<float>(std::numeric_limits<int>::max())) |
| 115 return 0; |
| 116 |
113 RefPtr<ByteArray> result = ByteArray::create(rect.width() * rect.height() *
4); | 117 RefPtr<ByteArray> result = ByteArray::create(rect.width() * rect.height() *
4); |
114 unsigned char* data = result->data(); | 118 unsigned char* data = result->data(); |
115 | 119 |
116 if (rect.x() < 0 || rect.y() < 0 || rect.maxX() > size.width() || rect.maxY(
) > size.height()) | 120 if (rect.x() < 0 || rect.y() < 0 || rect.maxX() > size.width() || rect.maxY(
) > size.height()) |
117 memset(data, 0, result->length()); | 121 memset(data, 0, result->length()); |
118 | 122 |
119 int originx = rect.x(); | 123 int originx = rect.x(); |
120 int destx = 0; | 124 int destx = 0; |
121 if (originx < 0) { | 125 if (originx < 0) { |
122 destx = -originx; | 126 destx = -originx; |
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378 #endif // USE(ACCELERATE) | 382 #endif // USE(ACCELERATE) |
379 | 383 |
380 IOSurfaceUnlock(surface, 0, 0); | 384 IOSurfaceUnlock(surface, 0, 0); |
381 #else | 385 #else |
382 ASSERT_NOT_REACHED(); | 386 ASSERT_NOT_REACHED(); |
383 #endif // USE(IOSURFACE_CANVAS_BACKING_STORE) | 387 #endif // USE(IOSURFACE_CANVAS_BACKING_STORE) |
384 } | 388 } |
385 } | 389 } |
386 | 390 |
387 } // namespace WebCore | 391 } // namespace WebCore |
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