clippy fixes

build.rs

@@ -39,5 +39,5 @@ fn handle_image(name: &str) {
     let out_dir = env::var("OUT_DIR").unwrap();
 
     let mut f = File::create(Path::new(&out_dir).join(format!("{name}.bin"))).unwrap();
-    f.write_all(&out.as_raw_slice()).unwrap();
+    f.write_all(out.as_raw_slice()).unwrap();
 }

src/lib.rs

@@ -3,8 +3,10 @@ use bitvec::{order::Msb0, view::BitView};
 const WIDTH: i32 = 96;
 const HEIGHT: i32 = 38;
 
+/// # Safety
+/// `ptr` must point to a 456-byte chunk of memory
 #[no_mangle]
-pub extern "C" fn next_frame(frame: u16, ptr: *mut u8) -> u8 {
+pub unsafe extern "C" fn next_frame(frame: u16, ptr: *mut u8) -> u8 {
     let out = unsafe { std::slice::from_raw_parts_mut(ptr, 456) };
     out.fill(0);
     let out = out.view_bits_mut::<Msb0>();

src/main.rs

@@ -24,7 +24,7 @@ fn main() {
             thread::sleep(target - now);
         }
 
-        if next_frame(i, frame.as_mut_ptr()) == 1 {
+        if unsafe { next_frame(i, frame.as_mut_ptr()) } == 1 {
             break;
         }