extern crate coremidi;
use std::env;
use std::thread;
use std::time::Duration;
fn main() {
let destination_index = get_destination_index();
println!("Destination index: {}" , destination_index);
let destination = coremidi::Destination::from_index(destination_index).unwrap();
println!(
"Destination display name: {}" ,
destination.display_name().unwrap()
);
let client = coremidi::Client::new("Example Client" ).unwrap();
let output_port = client.output_port("Example Port" ).unwrap();
let note_on = create_note_on(0 , 64 , 127 );
let note_off = create_note_off(0 , 64 , 127 );
for i in 0 ..10 {
println!("[{}] Sending note ..." , i);
output_port.send(&destination, ¬e_on).unwrap();
thread::sleep(Duration::from_millis(1000 ));
output_port.send(&destination, ¬e_off).unwrap();
}
}
fn get_destination_index() -> usize {
let mut args_iter = env::args();
let tool_name = args_iter
.next()
.and_then(|path| {
path.split(std::path::MAIN_SEPARATOR)
.last()
.map(|v| v.to_string())
})
.unwrap_or_else(|| "send" .to_string());
match args_iter.next() {
Some(arg) => match arg.parse::<usize>() {
Ok(index) => {
if index >= coremidi::Destinations::count() {
println!("Destination index out of range: {}" , index);
std::process::exit(-1 );
}
index
}
Err(_) => {
println!("Wrong destination index: {}" , arg);
std::process::exit(-1 );
}
},
None => {
println!("Usage: {} <destination-index>" , tool_name);
println!();
println!("Available Destinations:" );
print_destinations();
std::process::exit(-1 );
}
}
}
fn print_destinations() {
for (i, destination) in coremidi::Destinations.into_iter().enumerate() {
if let Some(display_name) = destination.display_name() {
println!("[{}] {}" , i, display_name)
}
}
}
fn create_note_on(channel: u8, note: u8, velocity: u8) -> coremidi::PacketBuffer {
let data = &[0 x90 | (channel & 0 x0f), note & 0 x7f, velocity & 0 x7f];
coremidi::PacketBuffer::new(0 , data)
}
fn create_note_off(channel: u8, note: u8, velocity: u8) -> coremidi::PacketBuffer {
let data = &[0 x80 | (channel & 0 x0f), note & 0 x7f, velocity & 0 x7f];
coremidi::PacketBuffer::new(0 , data)
}
Messung V0.5 in Prozent C=88 H=93 G=90
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-06-20)
¤
*© Formatika GbR, Deutschland