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1 /* | 1 /* |
2 * Copyright 2007 The Android Open Source Project | 2 * Copyright 2007 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 "SkMask.h" | 8 #include "SkMask.h" |
9 | 9 |
10 /** returns the product if it is positive and fits in 31 bits. Otherwise this | 10 /** returns the product if it is positive and fits in 31 bits. Otherwise this |
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45 } | 45 } |
46 | 46 |
47 /////////////////////////////////////////////////////////////////////////////// | 47 /////////////////////////////////////////////////////////////////////////////// |
48 | 48 |
49 static const int gMaskFormatToShift[] = { | 49 static const int gMaskFormatToShift[] = { |
50 ~0, // BW -- not supported | 50 ~0, // BW -- not supported |
51 0, // A8 | 51 0, // A8 |
52 0, // 3D | 52 0, // 3D |
53 2, // ARGB32 | 53 2, // ARGB32 |
54 1, // LCD16 | 54 1, // LCD16 |
55 2 // LCD32 | |
56 }; | 55 }; |
57 | 56 |
58 static int maskFormatToShift(SkMask::Format format) { | 57 static int maskFormatToShift(SkMask::Format format) { |
59 SkASSERT((unsigned)format < SK_ARRAY_COUNT(gMaskFormatToShift)); | 58 SkASSERT((unsigned)format < SK_ARRAY_COUNT(gMaskFormatToShift)); |
60 SkASSERT(SkMask::kBW_Format != format); | 59 SkASSERT(SkMask::kBW_Format != format); |
61 return gMaskFormatToShift[format]; | 60 return gMaskFormatToShift[format]; |
62 } | 61 } |
63 | 62 |
64 void* SkMask::getAddr(int x, int y) const { | 63 void* SkMask::getAddr(int x, int y) const { |
65 SkASSERT(kBW_Format != fFormat); | 64 SkASSERT(kBW_Format != fFormat); |
66 SkASSERT(fBounds.contains(x, y)); | 65 SkASSERT(fBounds.contains(x, y)); |
67 SkASSERT(fImage); | 66 SkASSERT(fImage); |
68 | 67 |
69 char* addr = (char*)fImage; | 68 char* addr = (char*)fImage; |
70 addr += (y - fBounds.fTop) * fRowBytes; | 69 addr += (y - fBounds.fTop) * fRowBytes; |
71 addr += (x - fBounds.fLeft) << maskFormatToShift(fFormat); | 70 addr += (x - fBounds.fLeft) << maskFormatToShift(fFormat); |
72 return addr; | 71 return addr; |
73 } | 72 } |
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