Function sixel_sys::sixel_helper_write_image_file

pub unsafe extern "C" fn sixel_helper_write_image_file(
    data: *mut c_uchar, 
    width: c_int, 
    height: c_int, 
    palette: *mut c_uchar, 
    pixelformat: PixelFormat, 
    filename: *const c_char, 
    imageformat: ImageFormat, 
    allocator: *mut Allocator
) -> Status