static void convertToIndex666(const SkBitmap& src, SkBitmap* dst) {
SkColorTable* ctable = new SkColorTable(216);
SkPMColor* colors = ctable->lockColors();
// rrr ggg bbb
for (int r = 0; r < 6; r++) {
int rr = conv6ToByte(r);
for (int g = 0; g < 6; g++) {
int gg = conv6ToByte(g);
for (int b = 0; b < 6; b++) {
int bb = conv6ToByte(b);
*colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
}
}
}
ctable->unlockColors(true);
dst->setConfig(SkBitmap::kIndex8_Config, src.width(), src.height());
dst->allocPixels(ctable);
ctable->unref();
SkAutoLockPixels alps(src);
SkAutoLockPixels alpd(*dst);
for (int y = 0; y < src.height(); y++) {
const SkPMColor* srcP = src.getAddr32(0, y);
uint8_t* dstP = dst->getAddr8(0, y);
for (int x = src.width() - 1; x >= 0; --x) {
*dstP++ = compute666Index(*srcP++);
}
}
}
static void convertToIndex666(const SkBitmap& src, SkBitmap* dst, SkAlphaType aType) {
SkPMColor storage[216];
SkPMColor* colors = storage;
// rrr ggg bbb
for (int r = 0; r < 6; r++) {
int rr = conv6ToByte(r);
for (int g = 0; g < 6; g++) {
int gg = conv6ToByte(g);
for (int b = 0; b < 6; b++) {
int bb = conv6ToByte(b);
*colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
}
}
}
SkColorTable* ctable = new SkColorTable(storage, 216);
dst->allocPixels(SkImageInfo::Make(src.width(), src.height(), kIndex_8_SkColorType, aType),
NULL, ctable);
ctable->unref();
SkAutoLockPixels alps(src);
SkAutoLockPixels alpd(*dst);
for (int y = 0; y < src.height(); y++) {
const SkPMColor* srcP = src.getAddr32(0, y);
uint8_t* dstP = dst->getAddr8(0, y);
for (int x = src.width() - 1; x >= 0; --x) {
*dstP++ = compute666Index(*srcP++);
}
}
}
