Crate a binary file

.gitignore

@@ -1 +1,2 @@
 /target
+*.bin

src/main.rs

@@ -1,4 +1,4 @@
-use std::fs;
+use std::{fs, io::{stdout, Write}};
 
 use midly::Smf;
 
@@ -18,17 +18,17 @@ fn main() {
     let bytes = fs::read(FILENAME).expect("Failed to read input file!");
     let smf = Smf::parse(&bytes).unwrap();
 
+    let mut stdout = stdout();
+
     let mut current_on = [false; 32];
 
     let track = &smf.tracks[0];
-    print!("const DATA: &[u32] = &[");
     for (_, event) in track.iter().enumerate() {
-        // println!("{}", event.delta);
         let mut delta = event.delta.as_int();
         while delta >= 96 {
             delta -= 96;
             let word = get_u32(&current_on);
-            print!("0x{:x},", word);
+            stdout.write(&word.to_le_bytes()).ok();
         }
         match event.kind {
             midly::TrackEventKind::Midi { channel: _, message } => match message {
@@ -44,17 +44,9 @@ fn main() {
                         current_on[index as usize] = true;
                     }
                 }
-                _ => {
-                    // println!("event {}: {:?}", i, message);
-                }
+                _ => {}
             },
-            _ => {
-                // println!("event {}: {:?}", i, event);
-            }
+            _ => {}
         }
     }
-    println!("];");
-    // for (i, track) in smf.tracks.iter().enumerate() {
-    //     println!("track {} has {} events", i, track.len());
-    // }
 }