Index: skia/effects/SkColorMatrix.cpp |
=================================================================== |
--- skia/effects/SkColorMatrix.cpp (revision 16859) |
+++ skia/effects/SkColorMatrix.cpp (working copy) |
@@ -1,165 +0,0 @@ |
-#include "SkColorMatrix.h" |
- |
-#define kRScale 0 |
-#define kGScale 6 |
-#define kBScale 12 |
-#define kAScale 18 |
- |
-void SkColorMatrix::setIdentity() |
-{ |
- memset(fMat, 0, sizeof(fMat)); |
- fMat[kRScale] = fMat[kGScale] = fMat[kBScale] = fMat[kAScale] = SK_Scalar1; |
-} |
- |
-void SkColorMatrix::setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, |
- SkScalar aScale) |
-{ |
- memset(fMat, 0, sizeof(fMat)); |
- fMat[kRScale] = rScale; |
- fMat[kGScale] = gScale; |
- fMat[kBScale] = bScale; |
- fMat[kAScale] = aScale; |
-} |
- |
-/////////////////////////////////////////////////////////////////////////////// |
- |
-void SkColorMatrix::setRotate(Axis axis, SkScalar degrees) |
-{ |
- SkScalar S, C; |
- |
- S = SkScalarSinCos(SkDegreesToRadians(degrees), &C); |
- |
- this->setSinCos(axis, S, C); |
-} |
- |
-void SkColorMatrix::setSinCos(Axis axis, SkScalar sine, SkScalar cosine) |
-{ |
- SkASSERT((unsigned)axis < 3); |
- |
- static const uint8_t gRotateIndex[] = { |
- 6, 7, 11, 12, |
- 0, 2, 15, 17, |
- 0, 1, 5, 6, |
- }; |
- const uint8_t* index = gRotateIndex + axis * 4; |
- |
- this->setIdentity(); |
- fMat[index[0]] = cosine; |
- fMat[index[1]] = sine; |
- fMat[index[2]] = -sine; |
- fMat[index[3]] = cosine; |
-} |
- |
-void SkColorMatrix::preRotate(Axis axis, SkScalar degrees) |
-{ |
- SkColorMatrix tmp; |
- tmp.setRotate(axis, degrees); |
- this->preConcat(tmp); |
-} |
- |
-void SkColorMatrix::postRotate(Axis axis, SkScalar degrees) |
-{ |
- SkColorMatrix tmp; |
- tmp.setRotate(axis, degrees); |
- this->postConcat(tmp); |
-} |
- |
-/////////////////////////////////////////////////////////////////////////////// |
- |
-void SkColorMatrix::setConcat(const SkColorMatrix& matA, |
- const SkColorMatrix& matB) |
-{ |
- SkScalar tmp[20]; |
- SkScalar* result = fMat; |
- |
- if (&matA == this || &matB == this) |
- result = tmp; |
- |
- const SkScalar* a = matA.fMat; |
- const SkScalar* b = matB.fMat; |
- |
- int index = 0; |
- for (int j = 0; j < 20; j += 5) |
- { |
- for (int i = 0; i < 4; i++) |
- { |
- result[index++] = SkScalarMul(a[j + 0], b[i + 0]) + |
- SkScalarMul(a[j + 1], b[i + 5]) + |
- SkScalarMul(a[j + 2], b[i + 10]) + |
- SkScalarMul(a[j + 3], b[i + 15]); |
- } |
- result[index++] = SkScalarMul(a[j + 0], b[4]) + |
- SkScalarMul(a[j + 1], b[9]) + |
- SkScalarMul(a[j + 2], b[14]) + |
- SkScalarMul(a[j + 3], b[19]) + |
- a[j + 4]; |
- } |
- |
- if (fMat != result) |
- memcpy(fMat, result, sizeof(fMat)); |
-} |
- |
-/////////////////////////////////////////////////////////////////////////////// |
- |
-static void setrow(SkScalar row[], SkScalar r, SkScalar g, SkScalar b) |
-{ |
- row[0] = r; |
- row[1] = g; |
- row[2] = b; |
-} |
- |
-static const SkScalar kHueR = SkFloatToScalar(0.213f); |
-static const SkScalar kHueG = SkFloatToScalar(0.715f); |
-static const SkScalar kHueB = SkFloatToScalar(0.072f); |
- |
-void SkColorMatrix::setSaturation(SkScalar sat) |
-{ |
- memset(fMat, 0, sizeof(fMat)); |
- |
- const SkScalar R = SkScalarMul(kHueR, SK_Scalar1 - sat); |
- const SkScalar G = SkScalarMul(kHueG, SK_Scalar1 - sat); |
- const SkScalar B = SkScalarMul(kHueB, SK_Scalar1 - sat); |
- |
- setrow(fMat + 0, R + sat, G, B); |
- setrow(fMat + 5, R, G + sat, B); |
- setrow(fMat + 10, R, G, B + sat); |
- fMat[18] = SK_Scalar1; |
-} |
- |
-static const SkScalar kR2Y = SkFloatToScalar(0.299f); |
-static const SkScalar kG2Y = SkFloatToScalar(0.587f); |
-static const SkScalar kB2Y = SkFloatToScalar(0.114f); |
- |
-static const SkScalar kR2U = SkFloatToScalar(-0.16874f); |
-static const SkScalar kG2U = SkFloatToScalar(-0.33126f); |
-static const SkScalar kB2U = SkFloatToScalar(0.5f); |
- |
-static const SkScalar kR2V = SkFloatToScalar(0.5f); |
-static const SkScalar kG2V = SkFloatToScalar(-0.41869f); |
-static const SkScalar kB2V = SkFloatToScalar(-0.08131f); |
- |
-void SkColorMatrix::setRGB2YUV() |
-{ |
- memset(fMat, 0, sizeof(fMat)); |
- |
- setrow(fMat + 0, kR2Y, kG2Y, kB2Y); |
- setrow(fMat + 5, kR2U, kG2U, kB2U); |
- setrow(fMat + 10, kR2V, kG2V, kB2V); |
- fMat[18] = SK_Scalar1; |
-} |
- |
-static const SkScalar kV2R = SkFloatToScalar(1.402f); |
-static const SkScalar kU2G = SkFloatToScalar(-0.34414f); |
-static const SkScalar kV2G = SkFloatToScalar(-0.71414f); |
-static const SkScalar kU2B = SkFloatToScalar(1.772f); |
- |
-void SkColorMatrix::setYUV2RGB() |
-{ |
- memset(fMat, 0, sizeof(fMat)); |
- |
- setrow(fMat + 0, SK_Scalar1, 0, kV2R); |
- setrow(fMat + 5, SK_Scalar1, kU2G, kV2G); |
- setrow(fMat + 10, SK_Scalar1, kU2B, 0); |
- fMat[18] = SK_Scalar1; |
-} |
- |