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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkColor.h" | 10 #include "SkColor.h" |
11 #include "SkColorPriv.h" | 11 #include "SkColorPriv.h" |
12 | 12 |
13 SkPMColor SkPreMultiplyARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) { | 13 SkPMColor SkPreMultiplyARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b) { |
14 return SkPremultiplyARGBInline(a, r, g, b); | 14 return SkPremultiplyARGBInline(a, r, g, b); |
15 } | 15 } |
16 | 16 |
17 SkPMColor SkPreMultiplyColor(SkColor c) { | 17 SkPMColor SkPreMultiplyColor(SkColor c) { |
18 return SkPremultiplyARGBInline(SkColorGetA(c), SkColorGetR(c), | 18 return SkPremultiplyARGBInline(SkColorGetA(c), SkColorGetR(c), |
19 SkColorGetG(c), SkColorGetB(c)); | 19 SkColorGetG(c), SkColorGetB(c)); |
20 } | 20 } |
21 | 21 |
22 /** | |
23 * Interprets c as an unpremultiplied color, and returns the | |
24 * premultiplied equivalent. | |
25 */ | |
26 SkPMColor SkPreMultiplyUnPMColor(SkPMColor c) { | |
reed1
2013/06/13 19:33:07
Since there is no header for this method, and it i
scroggo
2013/06/13 20:10:40
Done.
| |
27 U8CPU a = SkGetPackedA32(c); | |
28 U8CPU r = SkGetPackedR32(c); | |
29 U8CPU g = SkGetPackedG32(c); | |
30 U8CPU b = SkGetPackedB32(c); | |
31 return SkPreMultiplyARGB(a, r, g, b); | |
32 } | |
33 | |
22 /////////////////////////////////////////////////////////////////////////////// | 34 /////////////////////////////////////////////////////////////////////////////// |
23 | 35 |
24 static inline SkScalar ByteToScalar(U8CPU x) { | 36 static inline SkScalar ByteToScalar(U8CPU x) { |
25 SkASSERT(x <= 255); | 37 SkASSERT(x <= 255); |
26 return SkIntToScalar(x) / 255; | 38 return SkIntToScalar(x) / 255; |
27 } | 39 } |
28 | 40 |
29 static inline SkScalar ByteDivToScalar(int numer, U8CPU denom) { | 41 static inline SkScalar ByteDivToScalar(int numer, U8CPU denom) { |
30 // cast to keep the answer signed | 42 // cast to keep the answer signed |
31 return SkIntToScalar(numer) / (int)denom; | 43 return SkIntToScalar(numer) / (int)denom; |
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104 switch (hx >> 16) { | 116 switch (hx >> 16) { |
105 case 0: r = v; g = t; b = p; break; | 117 case 0: r = v; g = t; b = p; break; |
106 case 1: r = q; g = v; b = p; break; | 118 case 1: r = q; g = v; b = p; break; |
107 case 2: r = p; g = v; b = t; break; | 119 case 2: r = p; g = v; b = t; break; |
108 case 3: r = p; g = q; b = v; break; | 120 case 3: r = p; g = q; b = v; break; |
109 case 4: r = t; g = p; b = v; break; | 121 case 4: r = t; g = p; b = v; break; |
110 default: r = v; g = p; b = q; break; | 122 default: r = v; g = p; b = q; break; |
111 } | 123 } |
112 return SkColorSetARGB(a, r, g, b); | 124 return SkColorSetARGB(a, r, g, b); |
113 } | 125 } |
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