Add suspend handling

ALSA needs special handling to correctly resume after the system is
suspended with a PCM active. Do the required dance.

Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2023-10-22 09:03:12 +09:00
parent cfde41c18e
commit 157ddc4e41

View file

@ -17,6 +17,7 @@ use configparser::ini::Ini;
use log;
use log::{debug, info, warn};
use simple_logger::SimpleLogger;
use alsa::nix::errno::Errno;
mod helpers;
mod types;
@ -200,7 +201,21 @@ fn main() {
loop {
// Block while we're reading into the buffer
io.readi(&mut buf).unwrap();
io.readi(&mut buf).or_else(|e| {
if e.errno() == Errno::ESTRPIPE {
// Resume handling
loop {
match pcm.resume() {
Ok(_) => break Ok(0),
Err(e) if e.errno() == Errno::EAGAIN => continue,
Err(e) => break Err(e),
}
}.unwrap();
io.readi(&mut buf)
} else {
Err(e)
}
}).unwrap();
let cur_sample_rate = sample_rate_elem.read_int(&ctl);