michael@0: /*
michael@0:  * Copyright 2013 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkMipMap_DEFINED
michael@0: #define SkMipMap_DEFINED
michael@0: 
michael@0: #include "SkRefCnt.h"
michael@0: #include "SkScalar.h"
michael@0: 
michael@0: class SkBitmap;
michael@0: 
michael@0: class SkMipMap : public SkRefCnt {
michael@0: public:
michael@0:     static SkMipMap* Build(const SkBitmap& src);
michael@0: 
michael@0:     struct Level {
michael@0:         void*       fPixels;
michael@0:         uint32_t    fRowBytes;
michael@0:         uint32_t    fWidth, fHeight;
michael@0:         float       fScale; // < 1.0
michael@0:     };
michael@0: 
michael@0:     bool extractLevel(SkScalar scale, Level*) const;
michael@0: 
michael@0:     size_t getSize() const { return fSize; }
michael@0: 
michael@0: private:
michael@0:     size_t  fSize;
michael@0:     Level*  fLevels;
michael@0:     int     fCount;
michael@0: 
michael@0:     // we take ownership of levels, and will free it with sk_free()
michael@0:     SkMipMap(Level* levels, int count, size_t size);
michael@0:     virtual ~SkMipMap();
michael@0: 
michael@0:     static Level* AllocLevels(int levelCount, size_t pixelSize);
michael@0: };
michael@0: 
michael@0: #endif