Function bayerrs_demosaic_none 

#[unsafe(no_mangle)]
pub extern "C" fn bayerrs_demosaic_none(
    src: *const c_uchar,
    src_len: size_t,
    depth: c_uint,
    be: c_uint,
    cfa: c_uint,
    dst: *mut CRasterMut,
) -> c_uint

Demosaicing without any interpolation.