cpal/asio-sys/examples/enumerate.rs

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/* This example aims to produce the same behaviour
* as the enumerate example in cpal
* by Tom Gowan
*/
extern crate asio_sys as sys;
// This is the same data that enumerate
// is trying to find
// Basically these are stubbed versions
//
// Format that each sample has.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum SampleFormat {
// The value 0 corresponds to 0.
I16,
// The value 0 corresponds to 32768.
U16,
// The boundaries are (-1.0, 1.0).
F32,
}
// Number of channels.
pub type ChannelCount = u16;
// The number of samples processed per second for a single channel of audio.
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
pub struct SampleRate(pub u32);
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Format {
pub channels: ChannelCount,
pub sample_rate: SampleRate,
pub data_type: SampleFormat,
}
fn main() {
let asio = sys::Asio::new();
for name in asio.driver_names() {
println!("Driver: {:?}", name);
let driver = asio.load_driver(&name).expect("failed to load driver");
let channels = driver.channels().expect("failed to retrieve channel counts");
let sample_rate = driver.sample_rate().expect("failed to retrieve sample rate");
let in_fmt = Format {
channels: channels.ins as _,
sample_rate: SampleRate(sample_rate as _),
data_type: SampleFormat::F32,
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};
let out_fmt = Format {
channels: channels.outs as _,
sample_rate: SampleRate(sample_rate as _),
data_type: SampleFormat::F32,
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};
println!(" Input {:?}", in_fmt);
println!(" Output {:?}", out_fmt);
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}
}