Split bin dir into separate daemon and check dirs

This lets us manage their increasingly disparate dependencies separately

daemon/src/key_input.rs

@@ -0,0 +1,131 @@
+use log::{error, info};
+use std::time::{Duration, Instant};
+use tokio::fs::File;
+use tokio::io::AsyncReadExt;
+use tokio::sync::mpsc::Sender;
+use tokio::sync::oneshot;
+use tokio_util::task::TaskTracker;
+
+use crate::config;
+use crate::diag::DiagDeviceCtrlMessage;
+
+#[derive(Debug)]
+enum Event {
+    KeyDown,
+    KeyUp,
+}
+
+const INPUT_EVENT_SIZE: usize = 32;
+
+pub fn run_key_input_thread(
+    task_tracker: &TaskTracker,
+    config: &config::Config,
+    diag_tx: Sender<DiagDeviceCtrlMessage>,
+    mut ui_shutdown_rx: oneshot::Receiver<()>,
+) {
+    if config.key_input_mode == 0 {
+        return;
+    }
+
+    task_tracker.spawn(async move {
+        // Open the input device
+        let mut file = match File::open("/dev/input/event0").await {
+            Ok(file) => file,
+            Err(e) => {
+                error!("Failed to open /dev/input/event0: {e}");
+                return;
+            }
+        };
+
+        let mut buffer = [0u8; INPUT_EVENT_SIZE];
+        let mut last_keyup: Option<Instant> = None;
+        let mut last_event_time: Option<Instant> = None;
+
+        loop {
+            tokio::select! {
+                _ = &mut ui_shutdown_rx => {
+                    info!("received key input shutdown");
+                    return;
+                }
+                result = file.read_exact(&mut buffer) => {
+                    if let Err(e) = result {
+                        error!("failed to read key input: {e}");
+                        return;
+                    }
+                }
+            }
+
+            let event = parse_event(buffer);
+
+            let now = Instant::now();
+
+            // On orbic it was observed that pressing the power button can trigger many successive
+            // events. Drop events that are too close together.
+            if let Some(last_time) = last_event_time {
+                if now.duration_since(last_time) < Duration::from_millis(50) {
+                    last_event_time = Some(now);
+                    continue;
+                }
+            }
+            last_event_time = Some(now);
+
+            match event {
+                Event::KeyUp => {
+                    if let Some(last_keyup_instant) = last_keyup {
+                        let elapsed = now.duration_since(last_keyup_instant);
+
+                        if elapsed >= Duration::from_millis(100)
+                            && elapsed <= Duration::from_millis(800)
+                        {
+                            if let Err(e) = diag_tx.send(DiagDeviceCtrlMessage::StopRecording).await
+                            {
+                                error!("Failed to send StopRecording: {e}");
+                            }
+                            if let Err(e) =
+                                diag_tx.send(DiagDeviceCtrlMessage::StartRecording).await
+                            {
+                                error!("Failed to send StartRecording: {e}");
+                            }
+                            last_keyup = None;
+                            continue;
+                        }
+                    }
+
+                    last_keyup = Some(now);
+                }
+                Event::KeyDown => {}
+            }
+        }
+    });
+}
+
+fn parse_event(input: [u8; INPUT_EVENT_SIZE]) -> Event {
+    if input[12] == 0 {
+        Event::KeyUp
+    } else {
+        Event::KeyDown
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse_event_keydown_m7350_v5() {
+        let input = [
+            0x57, 0x6c, 0x09, 0x00, 0x7c, 0xfb, 0x03, 0x00, 0x01, 0x00, 0x74, 0x00, 0x01, 0x00,
+            0x00, 0x00, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        ];
+        assert!(matches!(parse_event(input), Event::KeyDown));
+    }
+
+    #[test]
+    fn test_parse_event_keyup_m7350_v5() {
+        let input = [
+            0x57, 0x6c, 0x09, 0x00, 0x1b, 0x15, 0x05, 0x00, 0x01, 0x00, 0x74, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        ];
+        assert!(matches!(parse_event(input), Event::KeyUp));
+    }
+}