| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkBitmapCache_DEFINED |
| #define SkBitmapCache_DEFINED |
| |
| #include "SkBitmap.h" |
| #include "SkMipMap.h" |
| |
| class SkImage; |
| class SkResourceCache; |
| |
| uint64_t SkMakeResourceCacheSharedIDForBitmap(uint32_t bitmapGenID); |
| |
| void SkNotifyBitmapGenIDIsStale(uint32_t bitmapGenID); |
| |
| struct SkBitmapCacheDesc { |
| uint32_t fImageID; |
| int32_t fWidth; |
| int32_t fHeight; |
| SkIRect fBounds; |
| |
| static SkBitmapCacheDesc Make(const SkBitmap&, int width, int height); |
| static SkBitmapCacheDesc Make(const SkBitmap&); |
| static SkBitmapCacheDesc Make(const SkImage*, int width, int height); |
| static SkBitmapCacheDesc Make(const SkImage*); |
| }; |
| |
| class SkBitmapCache { |
| public: |
| /** |
| * Use this allocator for bitmaps, so they can use ashmem when available. |
| * Returns nullptr if the ResourceCache has not been initialized with a DiscardableFactory. |
| */ |
| static SkBitmap::Allocator* GetAllocator(); |
| |
| /** |
| * Search based on the desc. If found, returns true and |
| * result will be set to the matching bitmap with its pixels already locked. |
| */ |
| static bool FindWH(const SkBitmapCacheDesc&, SkBitmap* result, |
| SkResourceCache* localCache = nullptr); |
| |
| /* |
| * result must be marked isImmutable() |
| */ |
| static bool AddWH(const SkBitmapCacheDesc&, const SkBitmap& result, |
| SkResourceCache* localCache = nullptr); |
| |
| /** |
| * Search based on the bitmap's genID and subset. If found, returns true and |
| * result will be set to the matching bitmap with its pixels already locked. |
| */ |
| static bool Find(uint32_t genID, const SkIRect& subset, SkBitmap* result, |
| SkResourceCache* localCache = nullptr); |
| |
| /** |
| * The width and the height of the provided subset must be the same as the result bitmap ones. |
| * result must be marked isImmutable() |
| */ |
| static bool Add(SkPixelRef*, const SkIRect& subset, const SkBitmap& result, |
| SkResourceCache* localCache = nullptr); |
| |
| static bool Find(uint32_t genID, SkBitmap* result, SkResourceCache* localCache = nullptr); |
| // todo: eliminate the need to specify ID, since it should == the bitmap's |
| static void Add(uint32_t genID, const SkBitmap&, SkResourceCache* localCache = nullptr); |
| }; |
| |
| class SkMipMapCache { |
| public: |
| static const SkMipMap* FindAndRef(const SkBitmapCacheDesc&, SkSourceGammaTreatment, |
| SkResourceCache* localCache = nullptr); |
| static const SkMipMap* AddAndRef(const SkBitmap& src, SkSourceGammaTreatment, |
| SkResourceCache* localCache = nullptr); |
| }; |
| |
| #endif |