msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef SkColorSpaceXform_Base_DEFINED |
| 9 | #define SkColorSpaceXform_Base_DEFINED |
| 10 | |
| 11 | #include "SkColorSpace.h" |
| 12 | #include "SkColorSpace_Base.h" |
| 13 | #include "SkColorSpaceXform.h" |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 14 | #include "SkResourceCache.h" |
| 15 | |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 16 | class SkColorSpace_XYZ; |
| 17 | |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 18 | class SkColorSpaceXform_Base : public SkColorSpaceXform { |
| 19 | public: |
| 20 | static constexpr int kDstGammaTableSize = 1024; |
| 21 | |
| 22 | protected: |
| 23 | virtual bool onApply(ColorFormat dstFormat, void* dst, ColorFormat srcFormat, const void* src, |
| 24 | int count, SkAlphaType alphaType) const = 0; |
| 25 | |
| 26 | private: |
| 27 | static void BuildDstGammaTables(const uint8_t* outGammaTables[3], uint8_t* gammaTableStorage, |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 28 | const SkColorSpace_XYZ* space, bool gammasAreMatching); |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 29 | |
| 30 | friend class SkColorSpaceXform; |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 31 | friend class SkColorSpace_XYZ; |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 32 | }; |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 33 | |
| 34 | enum SrcGamma { |
| 35 | kLinear_SrcGamma, |
| 36 | kTable_SrcGamma, |
| 37 | }; |
| 38 | |
| 39 | enum DstGamma { |
| 40 | kLinear_DstGamma, |
| 41 | kSRGB_DstGamma, |
| 42 | k2Dot2_DstGamma, |
| 43 | kTable_DstGamma, |
| 44 | }; |
| 45 | |
| 46 | enum ColorSpaceMatch { |
| 47 | kNone_ColorSpaceMatch, |
| 48 | kGamut_ColorSpaceMatch, |
| 49 | kFull_ColorSpaceMatch, |
| 50 | }; |
| 51 | |
| 52 | template <SrcGamma kSrc, DstGamma kDst, ColorSpaceMatch kCSM> |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 53 | class SkColorSpaceXform_XYZ : public SkColorSpaceXform_Base { |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 54 | protected: |
| 55 | bool onApply(ColorFormat dstFormat, void* dst, ColorFormat srcFormat, const void* src, |
| 56 | int count, SkAlphaType alphaType) const override; |
| 57 | |
| 58 | private: |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 59 | SkColorSpaceXform_XYZ(SkColorSpace_XYZ* srcSpace, const SkMatrix44& srcToDst, |
| 60 | SkColorSpace_XYZ* dstSpace); |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 61 | |
| 62 | // Contain pointers into storage or pointers into precomputed tables. |
| 63 | const float* fSrcGammaTables[3]; |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 64 | SkAutoTMalloc<float> fSrcStorage; |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 65 | const uint8_t* fDstGammaTables[3]; |
Matt Sarett | f489886 | 2016-10-16 10:20:41 -0400 | [diff] [blame] | 66 | sk_sp<SkData> fDstStorage; |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 67 | |
| 68 | float fSrcToDst[16]; |
| 69 | |
| 70 | friend class SkColorSpaceXform; |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 71 | friend std::unique_ptr<SkColorSpaceXform> SlowIdentityXform(SkColorSpace_XYZ* space); |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | // For testing. Bypasses opts for when src and dst color spaces are equal. |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 75 | std::unique_ptr<SkColorSpaceXform> SlowIdentityXform(SkColorSpace_XYZ* space); |
msarett | 31d097e8 | 2016-10-11 12:15:03 -0700 | [diff] [blame] | 76 | |
| 77 | #endif |