use SkPixmap inside sprite blitters

src/core/SkSpriteBlitter.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkSpriteBlitter_DEFINED
 #define SkSpriteBlitter_DEFINED
 
 #include "SkBitmap.h"
 #include "SkBitmapProcShader.h"
 #include "SkBlitter.h"
 #include "SkShader.h"
 #include "SkSmallAllocator.h"
 
 class SkPaint;
 
 class SkSpriteBlitter : public SkBlitter {
 public:
-            SkSpriteBlitter(const SkBitmap& source);
-    virtual ~SkSpriteBlitter();
+    SkSpriteBlitter(const SkBitmap& source);
 
-    virtual void setup(const SkBitmap& device, int left, int top,
-                       const SkPaint& paint);
+    virtual bool setup(const SkBitmap& device, int left, int top, const SkPaint& paint);
 
     // overrides
 #ifdef SK_DEBUG
     virtual void    blitH(int x, int y, int width);
     virtual void    blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
     virtual void    blitV(int x, int y, int height, SkAlpha alpha);
     virtual void    blitMask(const SkMask&, const SkIRect& clip);
 #endif
 
     static SkSpriteBlitter* ChooseD16(const SkBitmap& source, const SkPaint&,
                                       SkTBlitterAllocator*);
     static SkSpriteBlitter* ChooseD32(const SkBitmap& source, const SkPaint&,
                                       SkTBlitterAllocator*);
 
 protected:
     const SkBitmap* fDevice;
-    const SkBitmap* fSource;
+    const SkPixmap* fSource;
     int             fLeft, fTop;
     const SkPaint*  fPaint;
+
+private:
+    SkAutoPixmapUnlock fUnlocker;
 };
 
 #endif