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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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69 } | 69 } |
70 if ((kernelOffset.fX < 0) || (kernelOffset.fX >= kernelSize.fWidth) || | 70 if ((kernelOffset.fX < 0) || (kernelOffset.fX >= kernelSize.fWidth) || |
71 (kernelOffset.fY < 0) || (kernelOffset.fY >= kernelSize.fHeight)) { | 71 (kernelOffset.fY < 0) || (kernelOffset.fY >= kernelSize.fHeight)) { |
72 return NULL; | 72 return NULL; |
73 } | 73 } |
74 return SkNEW_ARGS(SkMatrixConvolutionImageFilter, (kernelSize, kernel, gain,
bias, | 74 return SkNEW_ARGS(SkMatrixConvolutionImageFilter, (kernelSize, kernel, gain,
bias, |
75 kernelOffset, tileMode, c
onvolveAlpha, | 75 kernelOffset, tileMode, c
onvolveAlpha, |
76 input, cropRect, uniqueID
)); | 76 input, cropRect, uniqueID
)); |
77 } | 77 } |
78 | 78 |
| 79 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING |
| 80 static bool tile_mode_is_valid(SkMatrixConvolutionImageFilter::TileMode tileMode
) { |
| 81 switch (tileMode) { |
| 82 case SkMatrixConvolutionImageFilter::kClamp_TileMode: |
| 83 case SkMatrixConvolutionImageFilter::kRepeat_TileMode: |
| 84 case SkMatrixConvolutionImageFilter::kClampToBlack_TileMode: |
| 85 return true; |
| 86 default: |
| 87 break; |
| 88 } |
| 89 return false; |
| 90 } |
| 91 |
| 92 SkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(SkReadBuffer& buf
fer) |
| 93 : INHERITED(1, buffer) { |
| 94 fKernelSize.fWidth = buffer.readInt(); |
| 95 fKernelSize.fHeight = buffer.readInt(); |
| 96 if ((fKernelSize.fWidth >= 1) && (fKernelSize.fHeight >= 1) && |
| 97 // Make sure size won't be larger than a signed int, |
| 98 // which would still be extremely large for a kernel, |
| 99 // but we don't impose a hard limit for kernel size |
| 100 (gMaxKernelSize / fKernelSize.fWidth >= fKernelSize.fHeight)) { |
| 101 size_t size = fKernelSize.fWidth * fKernelSize.fHeight; |
| 102 fKernel = SkNEW_ARRAY(SkScalar, size); |
| 103 SkDEBUGCODE(bool success =) buffer.readScalarArray(fKernel, size); |
| 104 SkASSERT(success); |
| 105 } else { |
| 106 fKernel = 0; |
| 107 } |
| 108 fGain = buffer.readScalar(); |
| 109 fBias = buffer.readScalar(); |
| 110 fKernelOffset.fX = buffer.readInt(); |
| 111 fKernelOffset.fY = buffer.readInt(); |
| 112 fTileMode = (TileMode) buffer.readInt(); |
| 113 fConvolveAlpha = buffer.readBool(); |
| 114 buffer.validate((fKernel != 0) && |
| 115 SkScalarIsFinite(fGain) && |
| 116 SkScalarIsFinite(fBias) && |
| 117 tile_mode_is_valid(fTileMode) && |
| 118 (fKernelOffset.fX >= 0) && (fKernelOffset.fX < fKernelSize.f
Width) && |
| 119 (fKernelOffset.fY >= 0) && (fKernelOffset.fY < fKernelSize.f
Height)); |
| 120 } |
| 121 #endif |
| 122 |
79 SkFlattenable* SkMatrixConvolutionImageFilter::CreateProc(SkReadBuffer& buffer)
{ | 123 SkFlattenable* SkMatrixConvolutionImageFilter::CreateProc(SkReadBuffer& buffer)
{ |
80 SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); | 124 SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); |
81 SkISize kernelSize; | 125 SkISize kernelSize; |
82 kernelSize.fWidth = buffer.readInt(); | 126 kernelSize.fWidth = buffer.readInt(); |
83 kernelSize.fHeight = buffer.readInt(); | 127 kernelSize.fHeight = buffer.readInt(); |
84 const int count = buffer.getArrayCount(); | 128 const int count = buffer.getArrayCount(); |
85 | 129 |
86 const int64_t kernelArea = sk_64_mul(kernelSize.width(), kernelSize.height()
); | 130 const int64_t kernelArea = sk_64_mul(kernelSize.width(), kernelSize.height()
); |
87 if (!buffer.validate(kernelArea == count)) { | 131 if (!buffer.validate(kernelArea == count)) { |
88 return NULL; | 132 return NULL; |
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362 fKernelSize, | 406 fKernelSize, |
363 fKernel, | 407 fKernel, |
364 fGain, | 408 fGain, |
365 fBias, | 409 fBias, |
366 fKernelOffset, | 410 fKernelOffset, |
367 convert_tilemodes(fTileMode), | 411 convert_tilemodes(fTileMode), |
368 fConvolveAlpha); | 412 fConvolveAlpha); |
369 return true; | 413 return true; |
370 } | 414 } |
371 #endif | 415 #endif |
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