Function leptonica_sys::pixConvert2To8

pub unsafe extern "C" fn pixConvert2To8(
    pixs: *mut PIX, 
    val0: l_uint8, 
    val1: l_uint8, 
    val2: l_uint8, 
    val3: l_uint8, 
    cmapflag: l_int32
) -> *mut PIX