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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 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 | 7 |
8 #ifndef SkColorSpaceXform_DEFINED | 8 #ifndef SkColorSpaceXform_DEFINED |
9 #define SkColorSpaceXform_DEFINED | 9 #define SkColorSpaceXform_DEFINED |
10 | 10 |
11 #include "SkColorSpace.h" | 11 #include "SkColorSpace.h" |
12 #include "SkColorSpace_Base.h" | 12 #include "SkColorSpace_Base.h" |
13 | 13 |
14 class SkColorSpaceXform : SkNoncopyable { | 14 class SkColorSpaceXform : SkNoncopyable { |
15 public: | 15 public: |
16 | 16 |
17 typedef uint32_t RGBA32; | 17 typedef uint32_t RGBA32; |
18 typedef uint32_t BGRA32; | |
19 typedef uint64_t RGBAF16; | 18 typedef uint64_t RGBAF16; |
20 | 19 |
21 /** | 20 /** |
22 * Create an object to handle color space conversions. | 21 * Create an object to handle color space conversions. |
23 * | 22 * |
24 * @param srcSpace The encoded color space. | 23 * @param srcSpace The encoded color space. |
25 * @param dstSpace The destination color space. | 24 * @param dstSpace The destination color space. |
26 * | 25 * |
27 */ | 26 */ |
28 static std::unique_ptr<SkColorSpaceXform> New(const sk_sp<SkColorSpace>& src
Space, | 27 static std::unique_ptr<SkColorSpaceXform> New(const sk_sp<SkColorSpace>& src
Space, |
29 const sk_sp<SkColorSpace>& dst
Space); | 28 const sk_sp<SkColorSpace>& dst
Space); |
30 | 29 |
31 /** | 30 /** |
32 * Apply the color conversion to a src buffer, storing the output in the ds
t buffer. | 31 * Apply the color conversion to a src buffer, storing the output in the ds
t buffer. |
33 * The src is stored as RGBA (8888) and is treated as opaque. | 32 * The src is stored as RGBA (8888) and is treated as opaque. |
34 * TODO (msarett): Support non-opaque srcs. | 33 * TODO (msarett): Support non-opaque srcs. |
35 */ | 34 */ |
36 virtual void applyToRGBA(RGBA32* dst, const RGBA32* src, int len) const = 0; | 35 virtual void applyTo8888(SkPMColor* dst, const RGBA32* src, int len) const =
0; |
37 virtual void applyToBGRA(BGRA32* dst, const RGBA32* src, int len) const = 0; | |
38 virtual void applyToF16(RGBAF16* dst, const RGBA32* src, int len) const = 0; | 36 virtual void applyToF16(RGBAF16* dst, const RGBA32* src, int len) const = 0; |
39 | 37 |
40 virtual ~SkColorSpaceXform() {} | 38 virtual ~SkColorSpaceXform() {} |
41 }; | 39 }; |
42 | 40 |
43 template <SkColorSpace::GammaNamed Dst> | 41 template <SkColorSpace::GammaNamed Dst> |
44 class SkColorSpaceXform_Base : public SkColorSpaceXform { | 42 class SkColorSpaceXform_Base : public SkColorSpaceXform { |
45 public: | 43 public: |
46 | 44 |
47 void applyToRGBA(RGBA32* dst, const RGBA32* src, int len) const override; | 45 void applyTo8888(SkPMColor* dst, const RGBA32* src, int len) const override; |
48 void applyToBGRA(BGRA32* dst, const RGBA32* src, int len) const override; | |
49 void applyToF16(RGBAF16* dst, const RGBA32* src, int len) const override; | 46 void applyToF16(RGBAF16* dst, const RGBA32* src, int len) const override; |
50 | 47 |
51 static constexpr int kDstGammaTableSize = 1024; | 48 static constexpr int kDstGammaTableSize = 1024; |
52 | 49 |
53 private: | 50 private: |
54 SkColorSpaceXform_Base(const sk_sp<SkColorSpace>& srcSpace, const SkMatrix44
& srcToDst, | 51 SkColorSpaceXform_Base(const sk_sp<SkColorSpace>& srcSpace, const SkMatrix44
& srcToDst, |
55 const sk_sp<SkColorSpace>& dstSpace); | 52 const sk_sp<SkColorSpace>& dstSpace); |
56 | 53 |
57 sk_sp<SkColorLookUpTable> fColorLUT; | 54 sk_sp<SkColorLookUpTable> fColorLUT; |
58 | 55 |
59 // May contain pointers into storage or pointers into precomputed tables. | 56 // May contain pointers into storage or pointers into precomputed tables. |
60 const float* fSrcGammaTables[3]; | 57 const float* fSrcGammaTables[3]; |
61 float fSrcGammaTableStorage[3 * 256]; | 58 float fSrcGammaTableStorage[3 * 256]; |
62 | 59 |
63 float fSrcToDst[16]; | 60 float fSrcToDst[16]; |
64 | 61 |
65 // May contain pointers into storage or pointers into precomputed tables. | 62 // May contain pointers into storage or pointers into precomputed tables. |
66 const uint8_t* fDstGammaTables[3]; | 63 const uint8_t* fDstGammaTables[3]; |
67 uint8_t fDstGammaTableStorage[3 * kDstGammaTableSize]; | 64 uint8_t fDstGammaTableStorage[3 * kDstGammaTableSize]; |
68 | 65 |
69 friend class SkColorSpaceXform; | 66 friend class SkColorSpaceXform; |
70 }; | 67 }; |
71 | 68 |
72 #endif | 69 #endif |
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