cpal/examples/enumerate.rs

64 lines
2.4 KiB
Rust

extern crate cpal;
extern crate failure;
use cpal::traits::{DeviceTrait, HostTrait};
fn main() -> Result<(), failure::Error> {
println!("Supported hosts:\n {:?}", cpal::ALL_HOSTS);
let available_hosts = cpal::available_hosts();
println!("Available hosts:\n {:?}", available_hosts);
for host_id in available_hosts {
println!("{:?}", host_id);
let host = cpal::host_from_id(host_id)?;
let default_in = host.default_input_device().map(|e| e.name().unwrap());
let default_out = host.default_output_device().map(|e| e.name().unwrap());
println!(" Default Input Device:\n {:?}", default_in);
println!(" Default Output Device:\n {:?}", default_out);
let devices = host.devices()?;
println!(" Devices: ");
for (device_index, device) in devices.enumerate() {
println!(" {}. \"{}\"", device_index + 1, device.name()?);
// Input formats
if let Ok(fmt) = device.default_input_format() {
println!(" Default input stream format:\n {:?}", fmt);
}
let mut input_formats = match device.supported_input_formats() {
Ok(f) => f.peekable(),
Err(e) => {
println!("Error: {:?}", e);
continue;
},
};
if input_formats.peek().is_some() {
println!(" All supported input stream formats:");
for (format_index, format) in input_formats.enumerate() {
println!(" {}.{}. {:?}", device_index + 1, format_index + 1, format);
}
}
// Output formats
if let Ok(fmt) = device.default_output_format() {
println!(" Default output stream format:\n {:?}", fmt);
}
let mut output_formats = match device.supported_output_formats() {
Ok(f) => f.peekable(),
Err(e) => {
println!("Error: {:?}", e);
continue;
},
};
if output_formats.peek().is_some() {
println!(" All supported output stream formats:");
for (format_index, format) in output_formats.enumerate() {
println!(" {}.{}. {:?}", device_index + 1, format_index + 1, format);
}
}
}
}
Ok(())
}