cb3c02005c
This lets clients access and use the same RGB to YUV matrices that we use internally. Inspired by https://crrev.com/c/3223983 Bug: skia:12545 Change-Id: I7f70f56e721819c3d33da447eff2e572b7774c51 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/461476 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/*
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* Copyright 2007 The Android Open Source Project
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkColorMatrix_DEFINED
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#define SkColorMatrix_DEFINED
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#include "include/core/SkImageInfo.h"
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#include <algorithm>
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#include <array>
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class SK_API SkColorMatrix {
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public:
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constexpr SkColorMatrix() : SkColorMatrix(1, 0, 0, 0, 0,
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0, 1, 0, 0, 0,
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0, 0, 1, 0, 0,
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0, 0, 0, 1, 0) {}
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constexpr SkColorMatrix(float m00, float m01, float m02, float m03, float m04,
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float m10, float m11, float m12, float m13, float m14,
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float m20, float m21, float m22, float m23, float m24,
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float m30, float m31, float m32, float m33, float m34)
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: fMat { m00, m01, m02, m03, m04,
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m10, m11, m12, m13, m14,
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m20, m21, m22, m23, m24,
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m30, m31, m32, m33, m34 } {}
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static SkColorMatrix RGBtoYUV(SkYUVColorSpace);
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static SkColorMatrix YUVtoRGB(SkYUVColorSpace);
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void setIdentity();
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void setScale(float rScale, float gScale, float bScale, float aScale = 1.0f);
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void postTranslate(float dr, float dg, float db, float da);
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void setConcat(const SkColorMatrix& a, const SkColorMatrix& b);
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void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); }
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void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); }
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void setSaturation(float sat);
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void setRowMajor(const float src[20]) { std::copy_n(src, 20, fMat.begin()); }
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void getRowMajor(float dst[20]) const { std::copy_n(fMat.begin(), 20, dst); }
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private:
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std::array<float, 20> fMat;
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friend class SkColorFilters;
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};
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#endif
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