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create capture session only if clients are active

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This commit is contained in:
Ferdinand Schober
2024-07-10 22:24:38 +02:00
parent 9c0a40563e
commit ebf7897caa
1 changed files with 37 additions and 38 deletions
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75
input-capture/src/libei.rs
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@@ -248,7 +248,7 @@ impl<'a> LibeiInputCapture<'a> {
}
async fn do_capture<'a>(
input_capture_ptr: *const InputCapture<'static>,
input_capture: *const InputCapture<'a>,
mut capture_event: Receiver<CaptureEvent>,
mut release_capture_channel: Receiver<ReleaseCaptureEvent>,
session: Option<(Session<'a>, BitFlags<Capabilities>)>,
@@ -258,49 +258,27 @@ async fn do_capture<'a>(
let mut session = session.map(|s| s.0);
/* safety: libei_task does not outlive Self */
let input_capture = unsafe { &*input_capture_ptr };
let input_capture = unsafe { &*input_capture };
let mut active_clients: Vec<(CaptureHandle, Position)> = vec![];
let mut next_barrier_id = 1u32;
let mut zones_changed = input_capture.receive_zones_changed().await?;
loop {
// create session
let mut session = match session.take() {
Some(s) => s,
None => create_session(input_capture).await?.0,
};
// do capture session
let cancel_session = CancellationToken::new();
let cancel_update = CancellationToken::new();
let capture_session = do_capture_session(
input_capture,
&mut session,
&event_tx,
&mut active_clients,
&mut next_barrier_id,
&mut release_capture_channel,
cancel_session.clone(),
cancel_update.clone(),
);
let mut capture_event_occured: Option<CaptureEvent> = None;
let mut zones_have_changed = false;
// kill session if clients need to be updated
let handle_session_update_request = async {
tokio::select! {
/* exit requested */
_ = cancellation_token.cancelled() => {},
/* session exited */
_ = cancel_update.cancelled() => {},
/* zones have changed */
_ = zones_changed.next() => zones_have_changed = true,
/* clients changed */
e = capture_event.recv() => if let Some(e) = e {
_ = cancellation_token.cancelled() => {}, /* exit requested */
_ = cancel_update.cancelled() => {}, /* session exited */
_ = zones_changed.next() => zones_have_changed = true, /* zones have changed */
e = capture_event.recv() => if let Some(e) = e { /* clients changed */
capture_event_occured.replace(e);
},
}
@@ -308,12 +286,38 @@ async fn do_capture<'a>(
cancel_session.cancel();
};
let (capture_result, ()) = tokio::join!(capture_session, handle_session_update_request);
log::info!("capture session + session_update task done!");
if !active_clients.is_empty() {
// create session
let mut session = match session.take() {
Some(s) => s,
None => create_session(input_capture).await?.0,
};
// disable capture
log::info!("disabling input capture");
input_capture.disable(&session).await?;
let capture_session = do_capture_session(
input_capture,
&mut session,
&event_tx,
&mut active_clients,
&mut next_barrier_id,
&mut release_capture_channel,
cancel_session.clone(),
cancel_update.clone(),
);
let (capture_result, ()) = tokio::join!(capture_session, handle_session_update_request);
log::info!("capture session + session_update task done!");
// disable capture
log::info!("disabling input capture");
input_capture.disable(&session).await?;
// propagate error from capture session
if capture_result.is_err() {
return capture_result;
}
} else {
handle_session_update_request.await;
}
// update clients if requested
if let Some(event) = capture_event_occured.take() {
@@ -323,11 +327,6 @@ async fn do_capture<'a>(
}
}
// propagate error from capture session
if capture_result.is_err() {
return capture_result;
}
log::info!("no error occured");
// break