Function libvips::bindings::g_utf16_to_ucs4

pub unsafe extern "C" fn g_utf16_to_ucs4(
    str: *const gunichar2, 
    len: glong, 
    items_read: *mut glong, 
    items_written: *mut glong, 
    error: *mut *mut GError
) -> *mut gunichar