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      1 
      2 /*
      3  * Copyright 2006 The Android Open Source Project
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 #if 0   // experimental
     11 
     12 class SkProcSpriteBlitter : public SkSpriteBlitter {
     13 public:
     14     typedef void (*Proc)(void* dst, const void* src, int count, const SkPMColor ctable[]);
     15 
     16     SkProcSpriteBlitter(const SkBitmap& source, Proc proc, unsigned srcShift, unsigned dstShift)
     17         : SkSpriteBlitter(source), fProc(proc), fSrcShift(SkToU8(srcShift)), fDstShift(SkToU8(dstShift)) {}
     18 
     19     virtual void blitRect(int x, int y, int width, int height)
     20     {
     21         size_t      dstRB = fDevice.rowBytes();
     22         size_t      srcRB = fSource.rowBytes();
     23         char*       dst = (char*)fDevice.getPixels() + y * dstRB + (x << fDstShift);
     24         const char* src = (const char*)fSource.getPixels() + (y - fTop) * srcRB + ((x - fLeft) << fSrcShift);
     25         Proc        proc = fProc;
     26         const SkPMColor* ctable = NULL;
     27 
     28         if fSource.getColorTable())
     29             ctable = fSource.getColorTable()->lockColors();
     30 
     31         while (--height >= 0)
     32         {
     33             proc(dst, src, width, ctable);
     34             dst += dstRB;
     35             src += srcRB;
     36         }
     37 
     38         if fSource.getColorTable())
     39             fSource.getColorTable()->unlockColors();
     40     }
     41 
     42 private:
     43     Proc    fProc;
     44     uint8_t fSrcShift, fDstShift;
     45 };
     46 
     47 #endif
     48