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
12class SkProcSpriteBlitter : public SkSpriteBlitter {
13public:
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
42private:
43    Proc    fProc;
44    uint8_t fSrcShift, fDstShift;
45};
46
47#endif
48