Function leptess::capi::pixThresholdGrayArb

pub unsafe extern "C" fn pixThresholdGrayArb(
    pixs: *mut Pix, 
    edgevals: *const i8, 
    outdepth: i32, 
    use_average: i32, 
    setblack: i32, 
    setwhite: i32
) -> *mut Pix