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1 /* | 1 /* |
2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 Google Inc. |
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 "SkImageInfo.h" | 8 #include "SkImageInfo.h" |
9 #include "SkReadBuffer.h" | 9 #include "SkReadBuffer.h" |
10 #include "SkWriteBuffer.h" | 10 #include "SkWriteBuffer.h" |
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43 SkASSERT(0 == (fAlphaType & ~0xFF)); | 43 SkASSERT(0 == (fAlphaType & ~0xFF)); |
44 SkASSERT(0 == (fColorType & ~0xFF)); | 44 SkASSERT(0 == (fColorType & ~0xFF)); |
45 uint32_t packed = (fProfileType << 16) | (fAlphaType << 8) | fColorType; | 45 uint32_t packed = (fProfileType << 16) | (fAlphaType << 8) | fColorType; |
46 buffer.write32(packed); | 46 buffer.write32(packed); |
47 } | 47 } |
48 | 48 |
49 bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType, | 49 bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType, |
50 SkAlphaType* canonical) { | 50 SkAlphaType* canonical) { |
51 switch (colorType) { | 51 switch (colorType) { |
52 case kUnknown_SkColorType: | 52 case kUnknown_SkColorType: |
53 alphaType = kIgnore_SkAlphaType; | 53 alphaType = kUnknown_SkAlphaType; |
54 break; | 54 break; |
55 case kAlpha_8_SkColorType: | 55 case kAlpha_8_SkColorType: |
56 if (kUnpremul_SkAlphaType == alphaType) { | 56 if (kUnpremul_SkAlphaType == alphaType) { |
57 alphaType = kPremul_SkAlphaType; | 57 alphaType = kPremul_SkAlphaType; |
58 } | 58 } |
59 // fall-through | 59 // fall-through |
60 case kIndex_8_SkColorType: | 60 case kIndex_8_SkColorType: |
61 case kARGB_4444_SkColorType: | 61 case kARGB_4444_SkColorType: |
62 case kRGBA_8888_SkColorType: | 62 case kRGBA_8888_SkColorType: |
63 case kBGRA_8888_SkColorType: | 63 case kBGRA_8888_SkColorType: |
64 if (kIgnore_SkAlphaType == alphaType) { | 64 if (kUnknown_SkAlphaType == alphaType) { |
65 return false; | 65 return false; |
66 } | 66 } |
67 break; | 67 break; |
68 case kRGB_565_SkColorType: | 68 case kRGB_565_SkColorType: |
69 alphaType = kOpaque_SkAlphaType; | 69 alphaType = kOpaque_SkAlphaType; |
70 break; | 70 break; |
71 default: | 71 default: |
72 return false; | 72 return false; |
73 } | 73 } |
74 if (canonical) { | 74 if (canonical) { |
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113 // here x,y are either 0 or negative | 113 // here x,y are either 0 or negative |
114 fPixels = ((char*)fPixels - y * fRowBytes - x * fInfo.bytesPerPixel()); | 114 fPixels = ((char*)fPixels - y * fRowBytes - x * fInfo.bytesPerPixel()); |
115 // the intersect may have shrunk info's logical size | 115 // the intersect may have shrunk info's logical size |
116 fInfo = fInfo.makeWH(srcR.width(), srcR.height()); | 116 fInfo = fInfo.makeWH(srcR.width(), srcR.height()); |
117 fX = srcR.x(); | 117 fX = srcR.x(); |
118 fY = srcR.y(); | 118 fY = srcR.y(); |
119 | 119 |
120 return true; | 120 return true; |
121 } | 121 } |
122 | 122 |
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