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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 #include "SkColorMatrix.h" | 7 #include "SkColorMatrix.h" |
8 | 8 |
9 // To detect if we need to apply clamping after applying a matrix, we check if | 9 // To detect if we need to apply clamping after applying a matrix, we check if |
10 // any output component might go outside of [0, 255] for any combination of | 10 // any output component might go outside of [0, 255] for any combination of |
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185 static const SkScalar kU2B = 1.772f; | 185 static const SkScalar kU2B = 1.772f; |
186 | 186 |
187 void SkColorMatrix::setYUV2RGB() { | 187 void SkColorMatrix::setYUV2RGB() { |
188 memset(fMat, 0, sizeof(fMat)); | 188 memset(fMat, 0, sizeof(fMat)); |
189 | 189 |
190 setrow(fMat + 0, 1, 0, kV2R); | 190 setrow(fMat + 0, 1, 0, kV2R); |
191 setrow(fMat + 5, 1, kU2G, kV2G); | 191 setrow(fMat + 5, 1, kU2G, kV2G); |
192 setrow(fMat + 10, 1, kU2B, 0); | 192 setrow(fMat + 10, 1, kU2B, 0); |
193 fMat[kA_Scale] = 1; | 193 fMat[kA_Scale] = 1; |
194 } | 194 } |
195 | |
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