Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/third_party/rust/midir/examples/test_play.rs b/third_party/rust/midir/examples/test_play.rs
new file mode 100644
index 0000000000..d34e87f8aa
--- /dev/null
+++ b/third_party/rust/midir/examples/test_play.rs
@@ -0,0 +1,74 @@
+extern crate midir;
+
+use std::thread::sleep;
+use std::time::Duration;
+use std::io::{stdin, stdout, Write};
+use std::error::Error;
+
+use midir::{MidiOutput, MidiOutputPort};
+
+fn main() {
+    match run() {
+        Ok(_) => (),
+        Err(err) => println!("Error: {}", err)
+    }
+}
+
+fn run() -> Result<(), Box<dyn Error>> {
+    let midi_out = MidiOutput::new("My Test Output")?;
+    
+    // Get an output port (read from console if multiple are available)
+    let out_ports = midi_out.ports();
+    let out_port: &MidiOutputPort = match out_ports.len() {
+        0 => return Err("no output port found".into()),
+        1 => {
+            println!("Choosing the only available output port: {}", midi_out.port_name(&out_ports[0]).unwrap());
+            &out_ports[0]
+        },
+        _ => {
+            println!("\nAvailable output ports:");
+            for (i, p) in out_ports.iter().enumerate() {
+                println!("{}: {}", i, midi_out.port_name(p).unwrap());
+            }
+            print!("Please select output port: ");
+            stdout().flush()?;
+            let mut input = String::new();
+            stdin().read_line(&mut input)?;
+            out_ports.get(input.trim().parse::<usize>()?)
+                     .ok_or("invalid output port selected")?
+        }
+    };
+    
+    println!("\nOpening connection");
+    let mut conn_out = midi_out.connect(out_port, "midir-test")?;
+    println!("Connection open. Listen!");
+    {
+        // Define a new scope in which the closure `play_note` borrows conn_out, so it can be called easily
+        let mut play_note = |note: u8, duration: u64| {
+            const NOTE_ON_MSG: u8 = 0x90;
+            const NOTE_OFF_MSG: u8 = 0x80;
+            const VELOCITY: u8 = 0x64;
+            // We're ignoring errors in here
+            let _ = conn_out.send(&[NOTE_ON_MSG, note, VELOCITY]);
+            sleep(Duration::from_millis(duration * 150));
+            let _ = conn_out.send(&[NOTE_OFF_MSG, note, VELOCITY]);
+        };
+
+        sleep(Duration::from_millis(4 * 150));
+        
+        play_note(66, 4);
+        play_note(65, 3);
+        play_note(63, 1);
+        play_note(61, 6);
+        play_note(59, 2);
+        play_note(58, 4);
+        play_note(56, 4);
+        play_note(54, 4);
+    }
+    sleep(Duration::from_millis(150));
+    println!("\nClosing connection");
+    // This is optional, the connection would automatically be closed as soon as it goes out of scope
+    conn_out.close();
+    println!("Connection closed");
+    Ok(())
+}