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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/midir/examples/test_play.rs
parentInitial commit. (diff)
downloadfirefox-upstream.tar.xz
firefox-upstream.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/midir/examples/test_play.rs')
-rw-r--r--third_party/rust/midir/examples/test_play.rs74
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(())
+}