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1 /* | 1 /* |
2 * Copyright 2008 The Android Open Source Project | 2 * Copyright 2008 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 SkPixelRef_DEFINED | 8 #ifndef SkPixelRef_DEFINED |
9 #define SkPixelRef_DEFINED | 9 #define SkPixelRef_DEFINED |
10 | 10 |
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312 private: | 312 private: |
313 SkBaseMutex* fMutex; // must remain in scope for the life of this object | 313 SkBaseMutex* fMutex; // must remain in scope for the life of this object |
314 | 314 |
315 // mostly const. fInfo.fAlpahType can be changed at runtime. | 315 // mostly const. fInfo.fAlpahType can be changed at runtime. |
316 const SkImageInfo fInfo; | 316 const SkImageInfo fInfo; |
317 | 317 |
318 // LockRec is only valid if we're in a locked state (isLocked()) | 318 // LockRec is only valid if we're in a locked state (isLocked()) |
319 LockRec fRec; | 319 LockRec fRec; |
320 int fLockCount; | 320 int fLockCount; |
321 | 321 |
322 mutable SkAtomic<uint32_t> fGenerationID; | 322 // Bottom bit indicates the Gen ID is unique. |
323 mutable SkAtomic<bool> fUniqueGenerationID; | 323 bool genIDIsUnique() const { return SkToBool(fTaggedGenID.load() & 1); } |
324 SkAtomic<bool> fAddedToCache; | 324 mutable SkAtomic<uint32_t> fTaggedGenID; |
| 325 |
325 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK | 326 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK |
326 const uint32_t fStableID; | 327 const uint32_t fStableID; |
327 #endif | 328 #endif |
328 | 329 |
329 SkTDArray<GenIDChangeListener*> fGenIDChangeListeners; // pointers are owne
d | 330 SkTDArray<GenIDChangeListener*> fGenIDChangeListeners; // pointers are owne
d |
330 | 331 |
331 SkString fURI; | 332 SkString fURI; |
332 | 333 |
| 334 // Set true by caches when they cache content that's derived from the curren
t pixels. |
| 335 SkAtomic<bool> fAddedToCache; |
333 // can go from false to true, but never from true to false | 336 // can go from false to true, but never from true to false |
334 bool fIsImmutable; | 337 bool fIsImmutable; |
335 // only ever set in constructor, const after that | 338 // only ever set in constructor, const after that |
336 bool fPreLocked; | 339 bool fPreLocked; |
337 | 340 |
338 void needsNewGenID(); | 341 void needsNewGenID(); |
339 void callGenIDChangeListeners(); | 342 void callGenIDChangeListeners(); |
340 | 343 |
341 void setMutex(SkBaseMutex* mutex); | 344 void setMutex(SkBaseMutex* mutex); |
342 | 345 |
343 // When copying a bitmap to another with the same shape and config, we can s
afely | 346 // When copying a bitmap to another with the same shape and config, we can s
afely |
344 // clone the pixelref generation ID too, which makes them equivalent under c
aching. | 347 // clone the pixelref generation ID too, which makes them equivalent under c
aching. |
345 friend class SkBitmap; // only for cloneGenID | 348 friend class SkBitmap; // only for cloneGenID |
346 void cloneGenID(const SkPixelRef&); | 349 void cloneGenID(const SkPixelRef&); |
347 | 350 |
348 typedef SkRefCnt INHERITED; | 351 typedef SkRefCnt INHERITED; |
349 }; | 352 }; |
350 | 353 |
351 class SkPixelRefFactory : public SkRefCnt { | 354 class SkPixelRefFactory : public SkRefCnt { |
352 public: | 355 public: |
353 /** | 356 /** |
354 * Allocate a new pixelref matching the specified ImageInfo, allocating | 357 * Allocate a new pixelref matching the specified ImageInfo, allocating |
355 * the memory for the pixels. If the ImageInfo requires a ColorTable, | 358 * the memory for the pixels. If the ImageInfo requires a ColorTable, |
356 * the pixelref will ref() the colortable. | 359 * the pixelref will ref() the colortable. |
357 * On failure return NULL. | 360 * On failure return NULL. |
358 */ | 361 */ |
359 virtual SkPixelRef* create(const SkImageInfo&, size_t rowBytes, SkColorTable
*) = 0; | 362 virtual SkPixelRef* create(const SkImageInfo&, size_t rowBytes, SkColorTable
*) = 0; |
360 }; | 363 }; |
361 | 364 |
362 #endif | 365 #endif |
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