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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /third_party/rust/midir/examples/test_play.rs | |
parent | Initial commit. (diff) | |
download | firefox-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.rs | 74 |
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(()) +} |