1 /* libs/graphics/sgl/SkProcSpriteBlitter.cpp 2 ** 3 ** Copyright 2006, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 #if 0 // experimental 19 20 class SkProcSpriteBlitter : public SkSpriteBlitter { 21 public: 22 typedef void (*Proc)(void* dst, const void* src, int count, const SkPMColor ctable[]); 23 24 SkProcSpriteBlitter(const SkBitmap& source, Proc proc, unsigned srcShift, unsigned dstShift) 25 : SkSpriteBlitter(source), fProc(proc), fSrcShift(SkToU8(srcShift)), fDstShift(SkToU8(dstShift)) {} 26 27 virtual void blitRect(int x, int y, int width, int height) 28 { 29 size_t dstRB = fDevice.rowBytes(); 30 size_t srcRB = fSource.rowBytes(); 31 char* dst = (char*)fDevice.getPixels() + y * dstRB + (x << fDstShift); 32 const char* src = (const char*)fSource.getPixels() + (y - fTop) * srcRB + ((x - fLeft) << fSrcShift); 33 Proc proc = fProc; 34 const SkPMColor* ctable = NULL; 35 36 if fSource.getColorTable()) 37 ctable = fSource.getColorTable()->lockColors(); 38 39 while (--height >= 0) 40 { 41 proc(dst, src, width, ctable); 42 dst += dstRB; 43 src += srcRB; 44 } 45 46 if fSource.getColorTable()) 47 fSource.getColorTable()->unlockColors(false); 48 } 49 50 private: 51 Proc fProc; 52 uint8_t fSrcShift, fDstShift; 53 }; 54 55 #endif 56