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1 /* | 1 /* |
2 * Copyright 2015 The Android Open Source Project | 2 * Copyright 2015 The Android Open Source Project |
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 SkCodecPriv_DEFINED | 8 #ifndef SkCodecPriv_DEFINED |
9 #define SkCodecPriv_DEFINED | 9 #define SkCodecPriv_DEFINED |
10 | 10 |
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137 } | 137 } |
138 } | 138 } |
139 | 139 |
140 /* | 140 /* |
141 * If there is a color table, get a pointer to the colors, otherwise return null
ptr | 141 * If there is a color table, get a pointer to the colors, otherwise return null
ptr |
142 */ | 142 */ |
143 static inline const SkPMColor* get_color_ptr(SkColorTable* colorTable) { | 143 static inline const SkPMColor* get_color_ptr(SkColorTable* colorTable) { |
144 return nullptr != colorTable ? colorTable->readColors() : nullptr; | 144 return nullptr != colorTable ? colorTable->readColors() : nullptr; |
145 } | 145 } |
146 | 146 |
147 static inline SkColorSpaceXform::ColorFormat select_xform_format(SkColorType col
orType) { | |
148 switch (colorType) { | |
149 case kRGBA_8888_SkColorType: | |
150 return SkColorSpaceXform::kRGBA_8888_ColorFormat; | |
151 case kBGRA_8888_SkColorType: | |
152 return SkColorSpaceXform::kBGRA_8888_ColorFormat; | |
153 case kRGBA_F16_SkColorType: | |
154 return SkColorSpaceXform::kRGBA_F16_ColorFormat; | |
155 default: | |
156 SkASSERT(false); | |
157 return SkColorSpaceXform::kRGBA_8888_ColorFormat; | |
158 } | |
159 } | |
160 | |
161 /* | 147 /* |
162 * Given that the encoded image uses a color table, return the fill value | 148 * Given that the encoded image uses a color table, return the fill value |
163 */ | 149 */ |
164 static inline uint64_t get_color_table_fill_value(SkColorType colorType, SkAlpha
Type alphaType, | 150 static inline uint64_t get_color_table_fill_value(SkColorType colorType, SkAlpha
Type alphaType, |
165 const SkPMColor* colorPtr, uint8_t fillIndex, SkColorSpaceXform* colorXf
orm) { | 151 const SkPMColor* colorPtr, uint8_t fillIndex, SkColorSpaceXform* colorXf
orm) { |
166 SkASSERT(nullptr != colorPtr); | 152 SkASSERT(nullptr != colorPtr); |
167 switch (colorType) { | 153 switch (colorType) { |
168 case kRGBA_8888_SkColorType: | 154 case kRGBA_8888_SkColorType: |
169 case kBGRA_8888_SkColorType: | 155 case kBGRA_8888_SkColorType: |
170 return colorPtr[fillIndex]; | 156 return colorPtr[fillIndex]; |
171 case kRGB_565_SkColorType: | 157 case kRGB_565_SkColorType: |
172 return SkPixel32ToPixel16(colorPtr[fillIndex]); | 158 return SkPixel32ToPixel16(colorPtr[fillIndex]); |
173 case kIndex_8_SkColorType: | 159 case kIndex_8_SkColorType: |
174 return fillIndex; | 160 return fillIndex; |
175 case kRGBA_F16_SkColorType: { | 161 case kRGBA_F16_SkColorType: { |
176 SkASSERT(colorXform); | 162 SkASSERT(colorXform); |
177 uint64_t dstColor; | 163 uint64_t dstColor; |
178 uint32_t srcColor = colorPtr[fillIndex]; | 164 uint32_t srcColor = colorPtr[fillIndex]; |
179 colorXform->apply(&dstColor, &srcColor, 1, select_xform_format(color
Type), alphaType); | 165 colorXform->apply(&dstColor, &srcColor, 1, colorType, alphaType); |
180 return dstColor; | 166 return dstColor; |
181 } | 167 } |
182 default: | 168 default: |
183 SkASSERT(false); | 169 SkASSERT(false); |
184 return 0; | 170 return 0; |
185 } | 171 } |
186 } | 172 } |
187 | 173 |
188 /* | 174 /* |
189 * | 175 * |
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350 | 336 |
351 // Need a color xform when dst space does not match the src. | 337 // Need a color xform when dst space does not match the src. |
352 bool srcDstNotEqual = !SkColorSpace::Equals(srcInfo.colorSpace(), dstInfo.co
lorSpace()); | 338 bool srcDstNotEqual = !SkColorSpace::Equals(srcInfo.colorSpace(), dstInfo.co
lorSpace()); |
353 | 339 |
354 // We never perform a color xform in legacy mode. | 340 // We never perform a color xform in legacy mode. |
355 bool isLegacy = nullptr == dstInfo.colorSpace(); | 341 bool isLegacy = nullptr == dstInfo.colorSpace(); |
356 | 342 |
357 return !isLegacy && (needsPremul || isF16 || srcDstNotEqual); | 343 return !isLegacy && (needsPremul || isF16 || srcDstNotEqual); |
358 } | 344 } |
359 | 345 |
360 static inline SkAlphaType select_xform_alpha(SkAlphaType dstAlphaType, SkAlphaTy
pe srcAlphaType) { | 346 static inline SkAlphaType select_alpha_xform(SkAlphaType dstAlphaType, SkAlphaTy
pe srcAlphaType) { |
361 return (kOpaque_SkAlphaType == srcAlphaType) ? kOpaque_SkAlphaType : dstAlph
aType; | 347 return (kOpaque_SkAlphaType == srcAlphaType) ? kOpaque_SkAlphaType : dstAlph
aType; |
362 } | 348 } |
363 | 349 |
364 /* | 350 /* |
365 * Alpha Type Conversions | 351 * Alpha Type Conversions |
366 * - kOpaque to kOpaque, kUnpremul, kPremul is valid | 352 * - kOpaque to kOpaque, kUnpremul, kPremul is valid |
367 * - kUnpremul to kUnpremul, kPremul is valid | 353 * - kUnpremul to kUnpremul, kPremul is valid |
368 * | 354 * |
369 * Color Type Conversions | 355 * Color Type Conversions |
370 * - Always support kRGBA_8888, kBGRA_8888 | 356 * - Always support kRGBA_8888, kBGRA_8888 |
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392 return kOpaque_SkAlphaType == src.alphaType() && !needs_color_xform(
dst, src); | 378 return kOpaque_SkAlphaType == src.alphaType() && !needs_color_xform(
dst, src); |
393 case kGray_8_SkColorType: | 379 case kGray_8_SkColorType: |
394 return kGray_8_SkColorType == src.colorType() && | 380 return kGray_8_SkColorType == src.colorType() && |
395 kOpaque_SkAlphaType == src.alphaType() && !needs_color_xform(
dst, src); | 381 kOpaque_SkAlphaType == src.alphaType() && !needs_color_xform(
dst, src); |
396 default: | 382 default: |
397 return false; | 383 return false; |
398 } | 384 } |
399 } | 385 } |
400 | 386 |
401 #endif // SkCodecPriv_DEFINED | 387 #endif // SkCodecPriv_DEFINED |
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