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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 SkColorSpace_Base_DEFINED | 8 #ifndef SkColorSpace_Base_DEFINED |
9 #define SkColorSpace_Base_DEFINED | 9 #define SkColorSpace_Base_DEFINED |
10 | 10 |
| 11 #include "SkColorLookUpTable.h" |
11 #include "SkColorSpace.h" | 12 #include "SkColorSpace.h" |
12 #include "SkData.h" | 13 #include "SkData.h" |
13 #include "SkOnce.h" | 14 #include "SkOnce.h" |
14 #include "SkTemplates.h" | 15 #include "SkTemplates.h" |
15 | 16 |
16 enum SkGammaNamed : uint8_t { | 17 enum SkGammaNamed : uint8_t { |
17 kLinear_SkGammaNamed, | 18 kLinear_SkGammaNamed, |
18 kSRGB_SkGammaNamed, | 19 kSRGB_SkGammaNamed, |
19 k2Dot2Curve_SkGammaNamed, | 20 k2Dot2Curve_SkGammaNamed, |
20 kNonStandard_SkGammaNamed, | 21 kNonStandard_SkGammaNamed, |
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136 // Objects of this type are sometimes created in a custom fashion using | 137 // Objects of this type are sometimes created in a custom fashion using |
137 // sk_malloc_throw and therefore must be sk_freed. We overload new to | 138 // sk_malloc_throw and therefore must be sk_freed. We overload new to |
138 // also call sk_malloc_throw so that memory can be unconditionally released | 139 // also call sk_malloc_throw so that memory can be unconditionally released |
139 // using sk_free in an overloaded delete. Overloading regular new means we | 140 // using sk_free in an overloaded delete. Overloading regular new means we |
140 // must also overload placement new. | 141 // must also overload placement new. |
141 void* operator new(size_t size) { return sk_malloc_throw(size); } | 142 void* operator new(size_t size) { return sk_malloc_throw(size); } |
142 void* operator new(size_t, void* p) { return p; } | 143 void* operator new(size_t, void* p) { return p; } |
143 void operator delete(void* p) { sk_free(p); } | 144 void operator delete(void* p) { sk_free(p); } |
144 }; | 145 }; |
145 | 146 |
146 struct SkColorLookUpTable : public SkRefCnt { | |
147 static constexpr uint8_t kOutputChannels = 3; | |
148 | |
149 uint8_t fInputChannels; | |
150 uint8_t fGridPoints[3]; | |
151 | |
152 const float* table() const { | |
153 return SkTAddOffset<const float>(this, sizeof(SkColorLookUpTable)); | |
154 } | |
155 | |
156 SkColorLookUpTable(uint8_t inputChannels, uint8_t gridPoints[3]) | |
157 : fInputChannels(inputChannels) | |
158 { | |
159 SkASSERT(3 == inputChannels); | |
160 memcpy(fGridPoints, gridPoints, 3 * sizeof(uint8_t)); | |
161 } | |
162 | |
163 // Objects of this type are created in a custom fashion using sk_malloc_thro
w | |
164 // and therefore must be sk_freed. | |
165 void* operator new(size_t size) = delete; | |
166 void* operator new(size_t, void* p) { return p; } | |
167 void operator delete(void* p) { sk_free(p); } | |
168 }; | |
169 | |
170 class SkColorSpace_Base : public SkColorSpace { | 147 class SkColorSpace_Base : public SkColorSpace { |
171 public: | 148 public: |
172 | 149 |
173 /** | 150 /** |
174 * Describes color space gamut as a transformation to XYZ D50. | 151 * Describes color space gamut as a transformation to XYZ D50. |
175 * Returns nullptr if color gamut cannot be described in terms of XYZ D50. | 152 * Returns nullptr if color gamut cannot be described in terms of XYZ D50. |
176 */ | 153 */ |
177 virtual const SkMatrix44* toXYZD50() const = 0; | 154 virtual const SkMatrix44* toXYZD50() const = 0; |
178 | 155 |
179 /** | 156 /** |
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247 | 224 |
248 static inline const SkColorSpace_Base* as_CSB(const SkColorSpace* colorSpace) { | 225 static inline const SkColorSpace_Base* as_CSB(const SkColorSpace* colorSpace) { |
249 return static_cast<const SkColorSpace_Base*>(colorSpace); | 226 return static_cast<const SkColorSpace_Base*>(colorSpace); |
250 } | 227 } |
251 | 228 |
252 static inline SkColorSpace_Base* as_CSB(const sk_sp<SkColorSpace>& colorSpace) { | 229 static inline SkColorSpace_Base* as_CSB(const sk_sp<SkColorSpace>& colorSpace) { |
253 return static_cast<SkColorSpace_Base*>(colorSpace.get()); | 230 return static_cast<SkColorSpace_Base*>(colorSpace.get()); |
254 } | 231 } |
255 | 232 |
256 #endif | 233 #endif |
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