signOf2          1795 source/encoder/sao.cpp             int signRight = signOf2(rec[x], rec[x + 1]);
signOf2          1832 source/encoder/sao.cpp             int signDown = signOf2(rec[x], rec[x + stride]);
signOf2          1868 source/encoder/sao.cpp             int signDown = signOf2(rec[x], rec[x + stride + 1]);
signOf2          1904 source/encoder/sao.cpp             int signDown = signOf2(rec[x], rec[x + stride - 1]);