monitor support - partial

client/Cargo.toml

@@ -18,6 +18,12 @@ tracing-subscriber      = { version = "0.3", features = ["fmt", "env-filter"] }
 tracing-appender        = "0.2"
 futures                 = "0.3"
 evdev                   = "0.13"
+gstreamer               = { version = "0.23", features = ["v1_22"] }
+gstreamer-app           = "0.23"
+gstreamer-video         = "0.23"
+gstreamer-wayland       = "0.23"
+winit                   = "0.30"
+raw-window-handle       = "0.6"
 
 [build-dependencies]
 prost-build             = "0.13"

client/src/app.rs

@@ -9,9 +9,10 @@ use tokio_stream::{wrappers::BroadcastStream, StreamExt};
 use tonic::Request;
 use tracing::{debug, error, info, warn};
 
-use navka_common::navka::{relay_client::RelayClient, KeyboardReport, MouseReport};
+use navka_common::navka::{relay_client::RelayClient, KeyboardReport, MouseReport, MonitorRequest, VideoPacket};
 
-use crate::input::inputs::InputAggregator;
+use navka_client::input::inputs::InputAggregator;
+use navka_client::output::video::MonitorWindow;
 
 pub struct NavkaClientApp {
     aggregator: Option<InputAggregator>,
@@ -63,9 +64,33 @@ impl NavkaClientApp {
             } else { futures::future::pending::<()>().await }
         };
 
+        /* video windows use a dedicated event‑loop thread */
+        let (video_tx, mut video_rx) = tokio::sync::mpsc::unbounded_channel::<VideoPacket>();
+        let (event_tx, event_rx) = std::sync::mpsc::channel();
+
+        std::thread::spawn(move || {
+            let el = EventLoop::with_user_event();
+            let win0 = MonitorWindow::new(0, &el).expect("win0");
+            let win1 = MonitorWindow::new(1, &el).expect("win1");
+    
+            el.run(move |_, _, _| {
+                while let Ok(pkt) = video_rx.try_recv() {
+                    match pkt.id {
+                        0 => win0.push_packet(pkt),
+                        1 => win1.push_packet(pkt),
+                        _ => {}
+                    }
+                }
+            });
+            // never returns
+        });
+
+        let vid_loop = Self::video_loop(self.server_addr.clone(), video_tx);
+
         tokio::select! {
             _ = kbd_loop => unreachable!(),
             _ = mou_loop => unreachable!(),
+            _ = vid_loop => unreachable!(),
             _ = suicide  => unreachable!(),
             // _ = suicide  => { warn!("dev‑mode timeout"); std::process::exit(0) },
             r = agg_task => {
@@ -127,6 +152,32 @@ impl NavkaClientApp {
         }
     }
 
+    /*──────────────── monitor stream ────────────────*/
+    async fn video_loop(addr: String, tx: tokio::sync::mpsc::UnboundedSender<VideoPacket>) {
+        loop {
+            match RelayClient::connect(addr.clone()).await {
+                Ok(mut cli) => {
+                    for monitor_id in 0..=1 {
+                        let req = MonitorRequest { id: monitor_id, max_bitrate: 6_000 };
+                        match cli.capture_video(Request::new(req)).await {
+                            Ok(mut stream) => {
+                                while let Some(pkt) = stream.get_mut().message().await.transpose() {
+                                    match pkt {
+                                        Ok(p) => let _ = tx.send(p),
+                                        Err(e) => { error!("video {monitor_id}: {e}"); break }
+                                    }
+                                }
+                            }
+                            Err(e) => error!("video {monitor_id}: {e}"),
+                        }
+                    }
+                }
+                Err(e) => error!("video connect: {e}"),
+            }
+            tokio::time::sleep(Duration::from_secs(2)).await;
+        }
+    }    
+
     #[inline(always)]
     async fn delay() { tokio::time::sleep(Duration::from_secs(1)).await; }
 }

client/src/lib.rs

@@ -4,5 +4,6 @@
 
 pub mod app;
 pub mod input;
+pub mod output;
 
 pub use app::NavkaClientApp;

client/src/main.rs

@@ -3,12 +3,13 @@
 #![forbid(unsafe_code)]
 
 use anyhow::Result;
-use navka_client::NavkaClientApp;
 use std::{env, fs::OpenOptions, path::Path};
 use tracing_appender::non_blocking;
 use tracing_appender::non_blocking::WorkerGuard;
 use tracing_subscriber::{filter::EnvFilter, fmt, prelude::*};
 
+use navka_client::NavkaClientApp;
+
 #[tokio::main]
 async fn main() -> Result<()> {
     /*------------- common filter & stderr layer ------------------------*/

client/src/output/mod.rs

@@ -0,0 +1,3 @@
+// client/src/output/mod.rs
+
+pub mod video;

client/src/output/video.rs

@@ -0,0 +1,49 @@
+// client/src/output/video.rs
+
+use gstreamer as gst;
+use gstreamer_app as gst_app;
+use gst::prelude::*;
+use navka_common::navka::VideoPacket;
+use winit::{
+    event_loop::EventLoop,
+    window::{Window, WindowBuilder},
+};
+
+pub struct MonitorWindow {
+    id: u32,
+    _window: Window,
+    src: gst_app::AppSrc,
+}
+
+impl MonitorWindow {
+    pub fn new(id: u32, el: &EventLoop<()>) -> anyhow::Result<Self> {
+        gst::init()?;
+
+        let window = WindowBuilder::new()
+            .with_title(format!("Lesavka‑monitor‑{id}"))
+            .with_decorations(false)
+            .build(el)?;
+
+        // appsrc -> decode -> convert -> waylandsink
+        let pipeline = gst::parse_launch(
+            "appsrc name=src is-live=true format=time do-timestamp=true ! \
+             queue ! h264parse ! avdec_h264 ! videoconvert ! \
+             waylandsink name=sink sync=false",
+        )?
+        .downcast::<gst::Pipeline>()?;
+
+        let src = pipeline.by_name("src").unwrap().downcast::<gst_app::AppSrc>()?;
+        src.set_latency(gst::ClockTime::NONE);
+        src.set_property_format(gst::Format::Time);
+
+        pipeline.set_state(gst::State::Playing)?;
+        Ok(Self { id, _window: window, src })
+    }
+
+    pub fn push_packet(&self, pkt: VideoPacket) {
+        if let Ok(mut buf) = gst::Buffer::from_mut_slice(pkt.data) {
+            buf.set_pts(gst::ClockTime::from_microseconds(pkt.pts));
+            let _ = self.src.push_buffer(buf);
+        }
+    }
+}

common/Cargo.toml

@@ -1,19 +1,15 @@
-[[bin]]
-name                    = "navka-common"
-path                    = "build.rs"
-
 [package]
-name                    = "navka_common"
+name                    = "navka-common"
-version                 = "0.1.0"
+version                 = "0.2.0"
 edition                 = "2024"
 build                   = "build.rs"
 
 [dependencies]
-tonic                   = "0.13"
+tonic                   = { version = "0.13", features = ["transport"] }
 prost                   = "0.13"
 
 [build-dependencies]
-tonic-build             = "0.13"
+tonic-build             = { version = "0.13", features = ["prost"] }
 
 [lib]
 name                    = "navka_common"

common/build.rs

@@ -1,3 +1,9 @@
+
+
 fn main() {
-    tonic_build::compile_protos("proto/navka.proto").unwrap();
+    tonic_build::configure()
+        .build_server(true)
+        .build_client(true)
+        .compile_protos(&["proto/navka.proto"], &["proto"])
+        .expect("prost build failed");
 }

common/proto/navka.proto

@@ -1,11 +1,26 @@
 syntax = "proto3";
 package navka;
 
-// smaller, fixed-size payloads ⇒ less allocation and simpler decoding
+// smaller, fixed-size payloads -> less allocation and simpler decoding
 message KeyboardReport { bytes data = 1; } // exactly 8 bytes
 message MouseReport    { bytes data = 1; } // exactly 4 bytes
 
+// ------------ video ------------
+message MonitorRequest {
+  uint32 id          = 1;  // 0/1 for now
+  uint32 max_bitrate = 2;  // kb/s – client hints, server may ignore
+}
+
+message VideoPacket {
+  uint32 id   = 1;         // monitor id
+  uint64 pts  = 2;         // monotonically increasing micro‑seconds
+  bytes  data = 3;         // full H.264 access‑unit (length‑prefixed)
+}
+
 service Relay {
   rpc StreamKeyboard (stream KeyboardReport) returns (stream KeyboardReport);
   rpc StreamMouse    (stream MouseReport)    returns (stream MouseReport);
+
+  // client requests one monitor, server pushes raw H.264
+  rpc CaptureVideo (MonitorRequest) returns (stream VideoPacket);
 }

common/src/lib.rs

@@ -1,4 +1,6 @@
 // Re-export the code generated by build.rs (navka.rs, relay.rs, etc.)
+// common/src/lib.rs
+
 pub mod navka {
     include!(concat!(env!("OUT_DIR"), "/navka.rs"));
 }

server/Cargo.toml

@@ -17,3 +17,7 @@ tracing                 = { version = "0.1", features = ["std"] }
 tracing-subscriber      = { version = "0.3", features = ["env-filter", "fmt"] }
 libc                    = "0.2"
 futures-util            = "0.3"
+gstreamer               = { version = "0.23", features = ["v1_22"] }
+gstreamer-app           = "0.23"
+gstreamer-video         = "0.23"
+udev                    = "0.8"

server/src/lib.rs

@@ -0,0 +1,4 @@
+// server/src/lib.rs
+
+pub mod video;
+pub mod usb_reset;

server/src/main.rs

@@ -2,20 +2,61 @@
 // sever/src/main.rs
 #![forbid(unsafe_code)]
 
-use std::{io::ErrorKind, pin::Pin, sync::Arc, panic::AssertUnwindSafe};
+use anyhow::Context;
-use std::time::Duration;
+use futures_util::Stream;
+use std::{pin::Pin, sync::Arc, time::Duration};
 use tokio::{fs::{File, OpenOptions}, io::AsyncWriteExt, sync::Mutex};
-use tokio_stream::{wrappers::ReceiverStream, Stream, StreamExt};
+use tokio_stream::{wrappers::ReceiverStream};
 use tonic::{transport::Server, Request, Response, Status};
-use tracing::{error, info, trace, warn, debug};
+use tracing::{error, info, trace, warn};
 use tracing_subscriber::{fmt, EnvFilter};
-use futures_util::FutureExt;
+use udev::{Enumerator, MonitorBuilder};
+
+use navka_server::{video, usb_reset};
 
 use navka_common::navka::{
     relay_server::{Relay, RelayServer},
     KeyboardReport, MouseReport,
+    MonitorRequest, VideoPacket,
 };
 
+/*─────────────────── GC311 discovery ───────────────────*/
+fn list_gc311_devices() -> anyhow::Result<Vec<String>> {
+    let mut v = Vec::new();
+    for entry in std::fs::read_dir("/sys/class/video4linux")? {
+        let path = entry?.path();
+        let name = std::fs::read_to_string(path.join("name"))?;
+        if name.to_lowercase().contains("gc311") {
+            v.push(
+                path.file_name()
+                    .unwrap()
+                    .to_string_lossy()
+                    .replace("video", "/dev/video"),
+            );
+        }
+    }
+    v.sort();
+    Ok(v)
+}
+
+/// background task: whenever GC311 disappears, cycle USB port
+async fn monitor_gc311_disconnect() -> anyhow::Result<()> {
+    let mut mon = MonitorBuilder::new()?
+        .match_subsystem("usb")?
+        .match_property("PRODUCT", "7ca/3311/*")? // vendor: 0x07ca, device 0x3311
+        .listen()?;
+
+    while let Some(ev) = mon.next() {
+        if ev.event_type() == udev::EventType::Remove {
+            if let (Some(bus), Some(dev)) = (ev.attribute_value("busnum"), ev.attribute_value("devnum")) {
+                usb_reset::cycle_port(bus.to_str().unwrap(), dev.to_str().unwrap());
+            }
+        }
+    }
+    Ok(())
+}
+
+/*─────────────────── tonic service ─────────────────────*/
 struct Handler {
     kb: Arc<Mutex<tokio::fs::File>>,
     ms: Arc<Mutex<tokio::fs::File>>,
@@ -25,6 +66,7 @@ struct Handler {
 impl Relay for Handler {
     type StreamKeyboardStream = ReceiverStream<Result<KeyboardReport, Status>>;
     type StreamMouseStream    = ReceiverStream<Result<MouseReport, Status>>;
+    type CaptureVideoStream   = Pin<Box<dyn Stream<Item = Result<VideoPacket, Status>> + Send + Sync + 'static>>;
 
     async fn stream_keyboard(
         &self,
@@ -76,39 +118,51 @@ impl Relay for Handler {
 
         Ok(Response::new(ReceiverStream::new(rx)))
     }
+
+    async fn capture_video(
+        &self,
+        req: Request<MonitorRequest>,
+    ) -> Result<Response<Self::CaptureVideoStream>, Status> {
+        let r = req.into_inner();
+
+        let devs = list_gc311_devices()
+            .map_err(|e| Status::internal(format!("enum v4l2: {e}")))?;
+
+        let dev = devs
+            .get(r.id as usize)
+            .ok_or_else(|| Status::invalid_argument(format!("monitor id {} absent", r.id)))?
+            .to_owned();
+
+        info!("🎥 streaming {dev} at ≤{} kb/s", r.max_bitrate);
+
+        let s = video::spawn_camera(&dev, r.id, r.max_bitrate)
+            .await
+            .map_err(|e| Status::internal(format!("{e:#?}")))?;
+
+        Ok(Response::new(Box::pin(s) as _))
+    }
 }
 
-#[tokio::main]
+/*─────────────────── main ──────────────────────────────*/
+#[tokio::main(flavor = "multi_thread", worker_threads = 4)]
 async fn main() -> anyhow::Result<()> {
+    /* logging */
     fmt().with_env_filter(
-        // honour RUST_LOG but fall back to very chatty defaults
+        EnvFilter::try_from_default_env()
-        EnvFilter::try_from_default_env().unwrap_or_else(|_| //{
+            .unwrap_or_else(|_| EnvFilter::new("navka_server=info")),
-            EnvFilter::new(
-                // "navka_client=trace,\
-                //  navka_server=trace,\
-                //  tonic=debug,\
-                //  h2=debug,\
-                //  tower=debug",
-                "navka_server=info"
     )
-        //}
-        ),
-    )
-    // .with_target(true)
-    // .with_thread_ids(true)
-    // .with_file(true)
     .init();
 
+    /* auto‑cycle task */
+    tokio::spawn(async { monitor_gc311_disconnect().await.ok(); });
+
     let kb = OpenOptions::new()
         .write(true)
-        // .read(true)
-        // .custom_flags(libc::O_NONBLOCK)
         .open("/dev/hidg0")
         .await?;
 
     let ms = OpenOptions::new()
         .write(true)
-        // .read(true)
         .custom_flags(libc::O_NONBLOCK)
         .open("/dev/hidg1")
         .await?;

server/src/usb_reset.rs

@@ -0,0 +1,21 @@
+// server/src/usb_reset.rs
+//! Helpers to (re‑)power GC311 if udev reports a disconnect.
+
+use std::process::Command;
+use tracing::{info, warn};
+
+/// Try to cycle power on the USB port where the GC311 was.
+/// Works only when the Pi is behind a hub that supports per‑port power control.
+/// Uses `uhubctl`, which must be `apt install uhubctl`.
+pub fn cycle_port(busnum: &str, devnum: &str) {
+    warn!("GC311 disappeared ({}:{}), cycling port power", busnum, devnum);
+    // example: uhubctl -l 1-1 -p 2 -a cycle
+    // mapping port# requires lsusb -t; we fall back to a generic bus reset
+    let _ = Command::new("sh")
+        .arg("-c")
+        .arg(format!("echo 0 | sudo tee /sys/bus/usb/devices/{busnum}-{devnum}/authorized; \
+                      sleep 1; \
+                      echo 1 | sudo tee /sys/bus/usb/devices/{busnum}-{devnum}/authorized"))
+        .status();
+    info!("port cycle issued");
+}

server/src/video.rs

@@ -0,0 +1,56 @@
+// server/src/video.rs
+
+use anyhow::Context;
+use gstreamer as gst;
+use gstreamer_app as gst_app;
+use gst::prelude::*;
+use navka_common::navka::VideoPacket;
+use tokio_stream::wrappers::ReceiverStream;
+use tonic::Status;
+
+pub async fn spawn_camera(
+    dev: &str,
+    id: u32,
+    max_bitrate_kbit: u32,
+) -> anyhow::Result<ReceiverStream<Result<VideoPacket, Status>>> {
+    gst::init().context("gst init")?;
+
+    // v4l2src → H.264 already, we only parse & relay
+    let desc = format!(
+        "v4l2src device={dev} io-mode=dmabuf ! queue ! h264parse config-interval=1 ! \
+         video/x-h264,stream-format=byte-stream,profile=baseline,level=4,\
+         bitrate={max_bitrate_kbit}000 ! appsink name=sink emit-signals=true sync=false"
+    );
+    let pipeline = gst::parse_launch(&desc)?.downcast::<gst::Pipeline>()?;
+
+    let sink = pipeline
+        .by_name("sink")
+        .expect("appsink")
+        .dynamic_cast::<gst_app::AppSink>()
+        .expect("appsink downcast");
+
+    let (tx, rx) = tokio::sync::mpsc::channel(256);
+
+    sink.set_callbacks(
+        gst_app::AppSinkCallbacks::builder()
+            .new_sample(move |sink| {
+                let sample = sink.pull_sample().map_err(|_| gst::FlowError::Eos)?;
+                let buffer = sample.buffer().ok_or(gst::FlowError::Error)?;
+
+                let map = buffer.map_readable().map_err(|_| gst::FlowError::Error)?;
+                let pkt = VideoPacket {
+                    id,
+                    pts: buffer.pts().nseconds() / 1_000, // → µs
+                    data: map.as_slice().to_vec(),
+                };
+                // ignore back‑pressure: drop oldest if channel is full
+                let _ = tx.try_send(Ok(pkt));
+                Ok(gst::FlowSuccess::Ok)
+            })
+            .build(),
+    );
+
+    pipeline.set_state(gst::State::Playing)?;
+
+    Ok(ReceiverStream::new(rx))
+}