1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
use super::alsa;
use super::parking_lot::Mutex;
use super::{Device, DeviceHandles};
use {BackendSpecificError, DevicesError};
pub struct Devices {
hint_iter: alsa::device_name::HintIter,
}
impl Devices {
pub fn new() -> Result<Self, DevicesError> {
Ok(Devices {
hint_iter: alsa::device_name::HintIter::new_str(None, "pcm")?,
})
}
}
unsafe impl Send for Devices {}
unsafe impl Sync for Devices {}
impl Iterator for Devices {
type Item = Device;
fn next(&mut self) -> Option<Device> {
loop {
match self.hint_iter.next() {
None => return None,
Some(hint) => {
let name = match hint.name {
None => continue,
Some(name) if name == "null" => continue,
Some(name) => name,
};
if let Ok(handles) = DeviceHandles::open(&name) {
return Some(Device {
name,
handles: Mutex::new(handles),
});
}
}
}
}
}
}
#[inline]
pub fn default_input_device() -> Option<Device> {
Some(Device {
name: "default".to_owned(),
handles: Mutex::new(Default::default()),
})
}
#[inline]
pub fn default_output_device() -> Option<Device> {
Some(Device {
name: "default".to_owned(),
handles: Mutex::new(Default::default()),
})
}
impl From<alsa::Error> for DevicesError {
fn from(err: alsa::Error) -> Self {
let err: BackendSpecificError = err.into();
err.into()
}
}