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1 /* | 1 /* |
2 * Copyright 2012 The Android Open Source Project | 2 * Copyright 2012 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkMatrixConvolutionImageFilter.h" | 8 #include "SkMatrixConvolutionImageFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
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51 fConvolveAlpha(convolveAlpha) { | 51 fConvolveAlpha(convolveAlpha) { |
52 uint32_t size = fKernelSize.fWidth * fKernelSize.fHeight; | 52 uint32_t size = fKernelSize.fWidth * fKernelSize.fHeight; |
53 fKernel = SkNEW_ARRAY(SkScalar, size); | 53 fKernel = SkNEW_ARRAY(SkScalar, size); |
54 memcpy(fKernel, kernel, size * sizeof(SkScalar)); | 54 memcpy(fKernel, kernel, size * sizeof(SkScalar)); |
55 SkASSERT(kernelSize.fWidth >= 1 && kernelSize.fHeight >= 1); | 55 SkASSERT(kernelSize.fWidth >= 1 && kernelSize.fHeight >= 1); |
56 SkASSERT(target.fX >= 0 && target.fX < kernelSize.fWidth); | 56 SkASSERT(target.fX >= 0 && target.fX < kernelSize.fWidth); |
57 SkASSERT(target.fY >= 0 && target.fY < kernelSize.fHeight); | 57 SkASSERT(target.fY >= 0 && target.fY < kernelSize.fHeight); |
58 } | 58 } |
59 | 59 |
60 SkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(SkFlattenableRead
Buffer& buffer) | 60 SkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(SkFlattenableRead
Buffer& buffer) |
61 : INHERITED(buffer) { | 61 : INHERITED(1, buffer) { |
62 // We need to be able to read at most SK_MaxS32 bytes, so divide that | 62 // We need to be able to read at most SK_MaxS32 bytes, so divide that |
63 // by the size of a scalar to know how many scalars we can read. | 63 // by the size of a scalar to know how many scalars we can read. |
64 static const int32_t kMaxSize = SK_MaxS32 / sizeof(SkScalar); | 64 static const int32_t kMaxSize = SK_MaxS32 / sizeof(SkScalar); |
65 fKernelSize.fWidth = buffer.readInt(); | 65 fKernelSize.fWidth = buffer.readInt(); |
66 fKernelSize.fHeight = buffer.readInt(); | 66 fKernelSize.fHeight = buffer.readInt(); |
67 if ((fKernelSize.fWidth >= 1) && (fKernelSize.fHeight >= 1) && | 67 if ((fKernelSize.fWidth >= 1) && (fKernelSize.fHeight >= 1) && |
68 // Make sure size won't be larger than a signed int, | 68 // Make sure size won't be larger than a signed int, |
69 // which would still be extremely large for a kernel, | 69 // which would still be extremely large for a kernel, |
70 // but we don't impose a hard limit for kernel size | 70 // but we don't impose a hard limit for kernel size |
71 (kMaxSize / fKernelSize.fWidth >= fKernelSize.fHeight)) { | 71 (kMaxSize / fKernelSize.fWidth >= fKernelSize.fHeight)) { |
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657 fBias, | 657 fBias, |
658 fTarget, | 658 fTarget, |
659 fTileMode, | 659 fTileMode, |
660 fConvolveAlpha); | 660 fConvolveAlpha); |
661 return true; | 661 return true; |
662 } | 662 } |
663 | 663 |
664 /////////////////////////////////////////////////////////////////////////////// | 664 /////////////////////////////////////////////////////////////////////////////// |
665 | 665 |
666 #endif | 666 #endif |
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