WIP

Signed-off-by: Frank Villaro-Dixon <frank@villaro-dixon.eu>

Cargo.lock

@@ -71,12 +71,14 @@ name = "beonew-5"
 version = "0.1.0"
 dependencies = [
  "evdev",
+ "evdev-rs",
  "femtovg",
  "gilrs",
  "glutin",
  "glutin-winit",
  "image",
  "instant",
+ "nix 0.28.0",
  "raw-window-handle",
  "resource",
  "winit",
@@ -284,6 +286,29 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "evdev-rs"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9812d5790fb6fcce449333eb6713dad335e8c979225ed98755c84a3987e06dba"
+dependencies = [
+ "bitflags 1.3.2",
+ "evdev-sys",
+ "libc",
+ "log",
+]
+
+[[package]]
+name = "evdev-sys"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "14ead42b547b15d47089c1243d907bcf0eb94e457046d3b315a26ac9c9e9ea6d"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "fdeflate"
 version = "0.3.4"

Cargo.toml

@@ -18,3 +18,5 @@ image = { version = "0.24.0", default-features = false, features = [
     "jpeg",
     "png",
 ] }
+evdev-rs = "0.6.1"
+nix = { version = "0.28.0", features = ["fs"] }

src/helpers/mod.rs

@@ -22,10 +22,9 @@ mod perf_graph;
 pub use perf_graph::PerfGraph;
 
 pub fn start(
-    #[cfg(not(target_arch = "wasm32"))] width: u32,
-    #[cfg(not(target_arch = "wasm32"))] height: u32,
-    #[cfg(not(target_arch = "wasm32"))] title: &'static str,
-    #[cfg(not(target_arch = "wasm32"))] resizeable: bool,
+    width: u32,
+    height: u32,
+    title: &'static str,
 ) {
     // This provides better error messages in debug mode.
     // It's disabled in release mode so it doesn't bloat up the file size.
@@ -34,11 +33,10 @@ pub fn start(
 
     let event_loop = EventLoop::new();
 
-    #[cfg(not(target_arch = "wasm32"))]
     let (canvas, window, context, surface) = {
         let window_builder = WindowBuilder::new()
             .with_inner_size(winit::dpi::PhysicalSize::new(width, height))
-            .with_resizable(resizeable)
+            .with_resizable(false)
             .with_title(title);
 
         let template = ConfigTemplateBuilder::new().with_alpha_size(8);
@@ -116,39 +114,11 @@ pub fn start(
         (canvas, window, gl_context, surface)
     };
 
-    #[cfg(target_arch = "wasm32")]
-    let (canvas, window) = {
-        use wasm_bindgen::JsCast;
-
-        let canvas = web_sys::window()
-            .unwrap()
-            .document()
-            .unwrap()
-            .get_element_by_id("canvas")
-            .unwrap()
-            .dyn_into::<web_sys::HtmlCanvasElement>()
-            .unwrap();
-
-        use winit::platform::web::WindowBuilderExtWebSys;
-
-        let renderer = OpenGl::new_from_html_canvas(&canvas).expect("Cannot create renderer");
-
-        let window = WindowBuilder::new()
-            .with_canvas(Some(canvas))
-            .build(&event_loop)
-            .unwrap();
-
-        let canvas = Canvas::new(renderer).expect("Cannot create canvas");
-
-        (canvas, window)
-    };
 
     run(
         canvas,
         event_loop,
-        #[cfg(not(target_arch = "wasm32"))]
         context,
-        #[cfg(not(target_arch = "wasm32"))]
         surface,
         window,
     );

src/hid.rs

@@ -0,0 +1,160 @@
+use core::panic;
+use gilrs::ev;
+use nix::{
+    fcntl::{FcntlArg, OFlag},
+    sys::epoll,
+};
+use std::{
+    io,
+    os::fd::{AsRawFd, FromRawFd, OwnedFd},
+};
+
+use evdev;
+
+#[derive(Debug)]
+pub enum Beo5Event {
+    LaserPosition(f32),
+    SelectionWheelRel(i32),
+    VolumeWheelRel(i32),
+    RightButtonPressed,
+    RightButtonReleased,
+    LeftButtonPressed,
+    LeftButtonReleased,
+    GoButtonPressed,
+    GoButtonReleased,
+    PowerButtonPressed,
+    PowerButtonReleased,
+}
+
+pub struct Beo5Device {
+    device: evdev::Device,
+}
+
+pub struct Beo5DeviceEvents<'a> {
+    events: Option<evdev::FetchEventsSynced<'a>>,
+}
+
+impl Beo5Device {
+    pub fn new_autodiscover() -> Option<Beo5Device> {
+        let devices = evdev::enumerate().map(|t| t.1).collect::<Vec<_>>();
+        for (i, d) in devices.iter().enumerate() {
+            if d.name().unwrap_or("Unnamed device").contains("BeoSound 5") {
+                println!(
+                    "Found BeoSound 5 device at index {}: {}",
+                    i,
+                    d.name().unwrap()
+                );
+                // XXX Is there a better way than this into_iter.nth.unwrap ?
+                let mut d = devices.into_iter().nth(i).unwrap();
+
+                // From evdev's example
+                let raw_fd = d.as_raw_fd();
+                // Set nonblocking
+                nix::fcntl::fcntl(raw_fd, FcntlArg::F_SETFL(OFlag::O_NONBLOCK)); //("Couldn't set nonblocking");
+
+                // Create epoll handle and attach raw_fd
+                //let epoll_fd = epoll::epoll_create1(epoll::EpollCreateFlags::EPOLL_CLOEXEC)?;
+                let epoll_fd = epoll::epoll_create1(epoll::EpollCreateFlags::EPOLL_CLOEXEC).ok()?;
+                let epoll_fd = unsafe { OwnedFd::from_raw_fd(epoll_fd) };
+                let mut event = epoll::EpollEvent::new(epoll::EpollFlags::EPOLLIN, 0);
+                epoll::epoll_ctl(
+                    epoll_fd.as_raw_fd(),
+                    epoll::EpollOp::EpollCtlAdd,
+                    raw_fd,
+                    Some(&mut event),
+                )
+                .unwrap();
+
+                //let events = d.fetch_events().unwrap();
+
+                return Some(Beo5Device { device: d });
+            }
+        }
+        println!("Couldn't find a Beosound 5 device! Is the Beosound 5 kernel module loaded + device connected?");
+        None
+    }
+
+    pub fn fetch_events(&self) -> io::Result<Beo5DeviceEvents> {
+        let events = &mut self.device.fetch_events()?;
+        Ok(Beo5DeviceEvents {
+            events: Some(events),
+        })
+    }
+
+    pub fn get_event_nonblocking(&mut self) -> Option<Beo5Event> {
+        if self.events.is_none() {
+            self.events = Some(self.device.fetch_events().unwrap());
+        }
+
+        for ev in self.events.unwrap().into_iter() {
+            println!("Beosound event: {ev:?}");
+            // XXX What happens with the other events in the iterator?
+            match ev.kind() {
+                // Look at the beosound 5 kernel module for the correct event codes
+                evdev::InputEventKind::RelAxis(axis) => {
+                    match axis {
+                        evdev::RelativeAxisType::REL_Y => {
+                            return Some(Beo5Event::SelectionWheelRel(ev.value()));
+                        }
+                        evdev::RelativeAxisType::REL_Z => {
+                            return Some(Beo5Event::VolumeWheelRel(ev.value()));
+                        }
+                        // Shouldn't be any more relative axe
+                        _ => {}
+                    }
+                }
+                evdev::InputEventKind::AbsAxis(axis) => {
+                    match axis {
+                        evdev::AbsoluteAxisType::ABS_X => {
+                            let pos_pct = ev.value() as f32 / 255.0;
+                            return Some(Beo5Event::LaserPosition(pos_pct));
+                        }
+                        // Shouldn't be any other absolute axe
+                        _ => {}
+                    }
+                }
+                evdev::InputEventKind::Switch(switch) => {
+                    /*
+                    match switch {
+                        evdev::SwitchType::LE=> {
+                            if ev.value() == 1 {
+                                return Beo5Event::RightButtonPressed;
+                            } else {
+                                return Beo5Event::RightButtonReleased;
+                            }
+                        }
+                        evdev::Switch::SW_LEFT => {
+                            if ev.value() == 1 {
+                                return Beo5Event::LeftButtonPressed;
+                            } else {
+                                return Beo5Event::LeftButtonReleased;
+                            }
+                        }
+                        evdev::Switch::SW_GO => {
+                            if ev.value() == 1 {
+                                return Beo5Event::GoButtonPressed;
+                            } else {
+                                return Beo5Event::GoButtonReleased;
+                            }
+                        }
+                        evdev::Switch::SW_POWER => {
+                            if ev.value() == 1 {
+                                return Beo5Event::PowerButtonPressed;
+                            } else {
+                                return Beo5Event::PowerButtonReleased;
+                            }
+                        }
+                        // Shouldn't be any other switches
+                        _ => {
+                            panic!("Unknown switch event: {ev:?}")
+                        }
+                    }
+                    */
+                }
+                _ => {} //SYN et al
+            }
+            return None;
+        }
+        return None;
+    }
+}

src/main.rs

@@ -1,5 +1,3 @@
-use core::panic;
-
 use femtovg::{
     renderer::OpenGl, Align, Baseline, Canvas, Color, FontId, ImageFlags, ImageId, Paint, Path,
     Renderer,
@@ -21,14 +19,20 @@ struct Fonts {
 }
 
 fn main() {
-    helpers::start(1024, 768, "Text demo", false);
+    helpers::start(1024, 768, "Text demo");
 }
 
 use glutin::prelude::*;
 
+mod hid;
 mod roundy_math;
 mod ui;
 
+enum UiEvent<'e> {
+    WinitEvent(winit::event::Event<'e, ()>),
+    HardwareEvent(evdev::InputEvent),
+}
+
 fn run(
     mut canvas: Canvas<OpenGl>,
     el: EventLoop<()>,
@@ -50,11 +54,6 @@ fn run(
         println!("{}", app.name());
     }
 
-    let flags = ImageFlags::GENERATE_MIPMAPS | ImageFlags::REPEAT_X | ImageFlags::REPEAT_Y;
-    let image_id = canvas
-        .load_image_mem(&resource!("assets/pattern.jpg"), flags)
-        .expect("Cannot create image");
-
     let start = Instant::now();
     let mut prevt = start;
 
@@ -65,12 +64,26 @@ fn run(
     #[cfg(feature = "debug_inspector")]
     let mut font_texture_to_show: Option<usize> = None;
 
-    let mut x = 5.0;
-    let mut y = 380.0;
+    let mut beo_device = hid::Beo5Device::new_autodiscover().expect("Couldn't find Beo5 device");
+    loop {
+        if let Some(ev) = beo_device.get_event_nonblocking() {
+            println!("HW Event: {:?}", ev);
+        } else {
+            break;
+        }
+    }
 
     el.run(move |event, _, control_flow| {
         *control_flow = ControlFlow::Poll;
 
+        let hw_event = beo_device.get_event_nonblocking();
+        match hw_event {
+            Some(ev) => {
+                println!("HW Event: {:?}", ev);
+            }
+            None => {}
+        }
+
         match event {
             Event::LoopDestroyed => *control_flow = ControlFlow::Exit,
             Event::WindowEvent { ref event, .. } => match event {
@@ -91,22 +104,13 @@ fn run(
                         },
                     ..
                 } => {
-                    println!("INput");
-                    if *keycode == VirtualKeyCode::W {
-                        y -= 0.1;
-                    }
-
-                    if *keycode == VirtualKeyCode::S {
-                        y += 0.1;
-                    }
-
-                    if *keycode == VirtualKeyCode::A {
-                        x -= 0.1;
-                    }
-
-                    if *keycode == VirtualKeyCode::D {
-                        x += 0.1;
+                    if keycode == &VirtualKeyCode::Escape {
+                        *control_flow = ControlFlow::Exit;
                     }
+                    println!("INput {:?}", keycode);
+                    //if *keycode == VirtualKeyCode::W {
+                    //    y -= 0.1;
+                    //}
 
                     if *keycode == VirtualKeyCode::NumpadAdd || *keycode == VirtualKeyCode::B {
                         println!("Add");
@@ -136,10 +140,13 @@ fn run(
                     delta: winit::event::MouseScrollDelta::LineDelta(_, y),
                     ..
                 } => {
+                    println!("Scroll {:?}", y);
                     font_size += *y / 2.0;
                     font_size = font_size.max(2.0);
                 }
-                _ => (),
+                _ => {
+                    println!("{:?}", event);
+                }
             },
             Event::RedrawRequested(_) => {
                 let dpi_factor = window.scale_factor();
@@ -186,6 +193,7 @@ fn run(
                 );
                 */
 
+                // XXX Why the save/reset/restore ?
                 canvas.save();
                 canvas.reset();
                 perf.render(&mut canvas, 500.0, 5.0);
@@ -225,8 +233,6 @@ fn draw_main_menu<T: Renderer>(canvas: &mut Canvas<T>, fonts: &Fonts, beo: &ui::
         radius: 400.0,
     };
 
-    println!("Canvas width: {}, height: {}", canvas_width, canvas_height);
-
     let canvas_size = roundy_math::Point {
         x: canvas_width as f64,
         y: canvas_height as f64,
@@ -234,7 +240,7 @@ fn draw_main_menu<T: Renderer>(canvas: &mut Canvas<T>, fonts: &Fonts, beo: &ui::
 
     let pts = main_menu_circle.get_equidistant_points(8, canvas_size);
     for i in 0..pts.len() {
-        println!(">>> {:?}", pts[i]);
+        //println!(">>> {:?}", pts[i]);
         let mut paint = Paint::color(Color::hex("B7410E"));
         paint.set_font(&[fonts.bold]);
         paint.set_text_baseline(Baseline::Top);

src/roundy_math.rs

@@ -1,5 +1,3 @@
-use std::f64::consts::PI;
-//use std::f64;
 
 #[derive(Debug)]
 pub struct Point {
@@ -19,10 +17,6 @@ impl VirtualCircle {
         // because I'm not clever enough to figure out how to calculate the intersection points
         // in the general case.
 
-        println!(
-            "center: {:?}, radius: {}, viewport_size: {:?}",
-            self.center, self.radius, viewport_size
-        );
         // Calculate the angles at which the circle intersects with the viewport
         let upper_x = self.center.x - (self.radius.powf(2.) - (0. - self.center.y).powf(2.)).sqrt();
         let lower_x = self.center.x
@@ -35,27 +29,26 @@ impl VirtualCircle {
             y: viewport_size.y,
         };
 
-        println!("up/low: {:?} {:?}", upper_point, lower_point);
+        //println!("up/low: {:?} {:?}", upper_point, lower_point);
 
         let intersection_angles = (
             (upper_point.x - self.center.x).atan2(upper_point.y - self.center.y),
             (lower_point.x - self.center.x).atan2(lower_point.y - self.center.y),
         );
-        println!("int angles: {:?}", intersection_angles);
+        //println!("int angles: {:?}", intersection_angles);
 
         let mut points = Vec::new();
 
         // Calculate the angle step to distribute points evenly
         let angle_step = (intersection_angles.1 - intersection_angles.0) / (n as f64);
-        println!("angle step: {}", angle_step);
+        //println!("angle step: {}", angle_step);
 
         // Generate the points
         for i in 0..n {
             let theta = intersection_angles.0 + angle_step * (i as f64 + 0.5);
             let x = theta.sin() * self.radius + viewport_size.x;
             let y = theta.cos() * self.radius + viewport_size.y - self.center.y;
-            println!("x: {}, y: {}", x, y);
-            points.push(Point { x: x, y: y });
+            points.push(Point { x, y });
         }
 
         points