An interface for reading the state of [sndio] controls.
This crate provides a wrapper around the [sioctl_open(3)] APIs for reading
and watching the state of [sndio] controls.
An inteface to the defautl [sndio] device can be opened by
[Sioctl::new()]. The initial state of controls can be read by calling
[Sioctl::controls()] and callbacks for subsequent changes can be requested
via [Sioctl::watch()].
There is currently way to set the value of controls. If this would be useful to you, please feel free to submit a PR.
```rust use sioctl::Sioctl;
fn main() { let s = Sioctl::new();
// Initial state of all controls.
for control in s.controls() {
println!("{:?}", control);
}
// Watch for changes to all controls:
let mut watcher = s.watch(|control| println!("{:?}", control));
// ...
// When done, call join() to shutdown watching.
watcher.join();
} ```
A more complete example is available in [src/bin/sioctl.rs].
MIT