reed@google.com | eed6f1b | 2013-07-18 19:53:31 +0000 | [diff] [blame^] | 1 | #ifndef SkMipMap_DEFINED |
| 2 | #define SkMipMap_DEFINED |
| 3 | |
| 4 | #include "SkRefCnt.h" |
| 5 | #include "SkScalar.h" |
| 6 | |
| 7 | class SkBitmap; |
| 8 | |
| 9 | class SkMipMap : public SkRefCnt { |
| 10 | public: |
| 11 | static SkMipMap* Build(const SkBitmap& src); |
| 12 | |
| 13 | struct Level { |
| 14 | void* fPixels; |
| 15 | uint32_t fRowBytes; |
| 16 | uint32_t fWidth, fHeight; |
| 17 | }; |
| 18 | |
| 19 | bool extractLevel(SkScalar scale, Level*) const; |
| 20 | |
| 21 | private: |
| 22 | Level* fLevels; |
| 23 | int fCount; |
| 24 | |
| 25 | // we take ownership of levels, and will free it with sk_free() |
| 26 | SkMipMap(Level* levels, int count) : fLevels(levels), fCount(count) { |
| 27 | SkASSERT(levels); |
| 28 | SkASSERT(count > 0); |
| 29 | } |
| 30 | |
| 31 | virtual ~SkMipMap() { |
| 32 | sk_free(fLevels); |
| 33 | } |
| 34 | |
| 35 | static Level* AllocLevels(int levelCount, size_t pixelSize); |
| 36 | }; |
| 37 | |
| 38 | #endif |