JSAMPROW yptr[8], cbptr[8], crptr[8];
JSAMPARRAY data[3] = { yptr, cbptr, crptr };
for (unsigned y = 0; y < height; y += 8) {
JSAMPROW yptr[8], cbptr[8], crptr[8];
JSAMPARRAY data[3] = { yptr, cbptr, crptr };
for (unsigned y = 0; y < height; y += 8) {