1 files changed, 57 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/effects/SkColorMatrix.h b/gfx/skia/skia/include/effects/SkColorMatrix.h
new file mode 100644
index 0000000000..5092278f0d
--- /dev/null
+++ b/gfx/skia/skia/include/effects/SkColorMatrix.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2007 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkColorMatrix_DEFINED
+#define SkColorMatrix_DEFINED
+
+#include "include/core/SkTypes.h"
+
+#include <algorithm>
+#include <array>
+
+enum SkYUVColorSpace : int;
+
+class SK_API SkColorMatrix {
+public:
+    constexpr SkColorMatrix() : SkColorMatrix(1, 0, 0, 0, 0,
+                                              0, 1, 0, 0, 0,
+                                              0, 0, 1, 0, 0,
+                                              0, 0, 0, 1, 0) {}
+
+    constexpr SkColorMatrix(float m00, float m01, float m02, float m03, float m04,
+                            float m10, float m11, float m12, float m13, float m14,
+                            float m20, float m21, float m22, float m23, float m24,
+                            float m30, float m31, float m32, float m33, float m34)
+        : fMat { m00, m01, m02, m03, m04,
+                 m10, m11, m12, m13, m14,
+                 m20, m21, m22, m23, m24,
+                 m30, m31, m32, m33, m34 } {}
+
+    static SkColorMatrix RGBtoYUV(SkYUVColorSpace);
+    static SkColorMatrix YUVtoRGB(SkYUVColorSpace);
+
+    void setIdentity();
+    void setScale(float rScale, float gScale, float bScale, float aScale = 1.0f);
+
+    void postTranslate(float dr, float dg, float db, float da);
+
+    void setConcat(const SkColorMatrix& a, const SkColorMatrix& b);
+    void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); }
+    void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); }
+
+    void setSaturation(float sat);
+
+    void setRowMajor(const float src[20]) { std::copy_n(src, 20, fMat.begin()); }
+    void getRowMajor(float dst[20]) const { std::copy_n(fMat.begin(), 20, dst); }
+
+private:
+    std::array<float, 20> fMat;
+
+    friend class SkColorFilters;
+};
+
+#endif