feat: Add device interface and factory

wip

fix borrowing issue and make everything compile

wip

src/conf.rs

@@ -2,7 +2,7 @@ use config::Config;
 use serde::{Serialize,Deserialize};
 use crate::errors::LJResult;
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Conf {
     pub laser_id: u8,
     pub debug: bool,
@@ -10,7 +10,7 @@ pub struct Conf {
     pub dac: DacFamily
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum DacFamily {
     #[serde(rename = "helios")] 
     Helios(HeliosConf),
@@ -18,12 +18,12 @@ pub enum DacFamily {
     Etherdream(EtherDreamConf),
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct HeliosConf {
     pub id: u8
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct EtherDreamConf {
     pub url: String
 }

src/device/helios.rs

@@ -0,0 +1,62 @@
+///
+/// Configure udev:
+/// https://github.com/Grix/helios_dac/blob/master/docs/udev_rules_for_linux.md
+///
+use helios_dac::{NativeHeliosDac, NativeHeliosDacController};
+use helios_dac::{
+	// Coordinate,
+	Color,
+	DeviceStatus,
+	Frame,
+	Point as HeliosPoint,
+};
+use crate::conf::HeliosConf;
+use crate::device::{Device, Status};
+use crate::errors::{LJError, LJResult};
+use crate::point::Point;
+
+pub struct HeliosDevice {
+	pub conf: HeliosConf,
+	dac: NativeHeliosDac,
+}
+
+impl HeliosDevice {
+	pub fn new(conf: &HeliosConf) -> LJResult<Self> {
+		let id = conf.id;
+		let controller = NativeHeliosDacController::new()?;
+		let devices = controller.list_devices()?;
+		let Some(device) = devices.into_iter().nth(id as usize) else {
+			return Err(Box::new(LJError::HeliosDeviceMissing));
+		};
+		let dac = device.open()?;
+		Ok(Self {
+			conf: (*conf).clone(),			dac,
+		})
+	}
+}
+
+impl Device for HeliosDevice {
+	fn status(&self) -> Status {
+		return Status {
+			active: true,
+			last_traced_at: "now".to_string(),
+			properties: vec!["foo".to_string()],
+		};
+	}
+
+	fn draw(&self,
+	        line: Vec<Point>,
+	        speed: u32,
+	) -> LJResult<()> {
+		while let Ok(DeviceStatus::NotReady) = self.dac.status() {}
+
+		let points: Vec<helios_dac::Point> = line.into_iter().map(|p| p.into()).collect();
+		let frame = Frame::new(speed, points);
+		Ok(())
+	}
+
+	fn stop(&mut self) -> LJResult<()> {
+		self.dac.stop()?;
+		Ok(())
+	}
+}

src/device/mod.rs

@@ -0,0 +1,45 @@
+use crate::point::Point;
+
+mod helios;
+
+use crate::conf::{Conf, DacFamily, EtherDreamConf, HeliosConf};
+use crate::device::helios::HeliosDevice;
+use crate::errors::LJResult;
+
+/*
+self.protocol_version,
+self.le_state,
+self.playback_state,
+self.source,
+self.le_flags,
+self.playback_flags,
+self.source_flags,
+self.fullness,
+self.point_rate,
+self.point_count
+*/
+
+
+pub struct Status {
+    pub active: bool,
+    pub last_traced_at: String,
+    pub properties: Vec<String>
+}
+
+pub trait Device {
+    fn status( &self ) -> Status;
+    fn draw(
+	    &self,
+	    frame: Vec<Point>,
+    	speed: u32,
+    ) -> LJResult<()> ;
+    fn stop(&mut self) -> LJResult<()>;
+}
+
+pub fn device_factory(config: &Conf) -> LJResult<Box<dyn Device>> {
+	let device = match &config.dac {
+		DacFamily::Helios(conf) => Box::new(HeliosDevice::new(conf)?),
+		DacFamily::Etherdream(_conf) => todo!(),
+	};
+	Ok(device)
+}

src/lib.rs

@@ -1,3 +1,5 @@
 pub mod conf;
 pub mod redis_ctrl;
 pub mod errors;
+pub mod device;
+pub mod point;

src/main.rs

@@ -7,122 +7,112 @@ mod conf;
 mod errors;
 mod point;
 mod transformer;
+mod device;
+
+use device::device_factory;
+
 
-use helios_dac::{
-    self,
-    NativeHeliosDacController,
-    NativeHeliosDac,
-    DeviceStatus,
-    Frame,
-};
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
-use redis_ctrl::{RedisCtrl,Order};
+use redis_ctrl::{RedisCtrl, Order};
 use conf::Conf;
-use errors::{LJError,LJResult};
+use errors::{LJError, LJResult};
 use point::Point;
-use transformer::{Transformers,Translate,Replicate};
-use log::{LevelFilter,info,/* warn, */ error};
+use transformer::{Transformers, Translate, Replicate};
+use log::{LevelFilter, info, /* warn, */ error};
 use env_logger::Builder;
 
-const DEFAULT_CONF_FILE : &str = "settings.toml";
-const CENTER : (f32,f32) = (2000.0, 2000.0);
+const DEFAULT_CONF_FILE: &str = "settings.toml";
+const CENTER: (f32, f32) = (2000.0, 2000.0);
 
-pub fn main() {    
-    match run_all() {
-	Ok(()) => {},
-	Err(err) => {
-	    error!("Error: {}", err);
+pub fn main() {
+	match run_all() {
+		Ok(()) => {}
+		Err(err) => {
+			error!("Error: {}", err);
+		}
 	}
-    }
 }
 
 fn run_all() -> LJResult<()> {
-    let filename = std::env::args().nth(1).unwrap_or_else(|| {
-	DEFAULT_CONF_FILE.to_string()
-    });
-    
-    let config = Conf::new(&filename);
-    init_logging(&config);
-    let config = config?;
-    info!("*** Starting up ***");
-    
-    let mut rs = RedisCtrl::new(&config.redis_url)?;
-    
-    let running = Arc::new(AtomicBool::new(true));
-    let r = running.clone();
-    ctrlc::set_handler(move || {
-        r.store(false, Ordering::SeqCst);
-    })?;
 
-    let mut device = get_helios_device()?;
+	// Setup configuration file and set up logs
+	let filename = std::env::args().nth(1).unwrap_or_else(|| {
+		DEFAULT_CONF_FILE.to_string()
+	});
+	let config = Conf::new(&filename);
+	init_logging(&config);
+	let config = config?;
+	info!("*** Starting up ***");
 
-    let transformers : Vec<Box<dyn Transformers>> = vec![
-	Box::new(Translate::new(CENTER.0, CENTER.1)),
-	Box::new(Replicate::Until(48))
-    ];
-        
-    while running.load(Ordering::SeqCst) {
-	let order = rs.get_order(config.laser_id)?;
-	if order != Order::Draw {
-	    info!("Order: {:?}", order);
+	// Setup Redis Service
+	let mut rs = RedisCtrl::new(&config.redis_url)?;
+
+	// Setup handler for interrupt Signals
+	let running = Arc::new(AtomicBool::new(true));
+	let r = running.clone();
+	ctrlc::set_handler(move || {
+		r.store(false, Ordering::SeqCst);
+	})?;
+
+	// Setup Laser Device based on conf
+	let mut tracer = device_factory(&config)?;
+
+	// can't work, but we can add + Debug to Device to make it work...
+	//dbg!(tracer);
+
+	// Setup geometry transformers on points lists
+	// @todo use the config
+	let transformers: Vec<Box<dyn Transformers>> = vec![
+		Box::new(Translate::new(CENTER.0, CENTER.1)),
+		Box::new(Replicate::Until(48)),
+	];
+
+	// Dispatch based on redis requests
+	while running.load(Ordering::SeqCst) {
+		let order = rs.get_order(config.laser_id)?;
+		if order != Order::Draw {
+			info!("Order: {:?}", order);
+		}
+		let frame = get_next_frame(&config, &transformers,
+		                           &mut rs, order == Order::Black)?;
+
+		// For now, draw all the time
+		tracer.draw(frame, 1000)?;
 	}
 
-	let frame = get_next_frame(&config, 1000, &transformers,
-				   &mut rs, order == Order::Black)?;
-	
-	while let Ok(DeviceStatus::NotReady) = device.status() {
-	}
-        device.write_frame(frame)?;
-    }
-
-    info!("Exiting, stoping device.");
-    device.stop()?;
-    Ok(())
+	info!("Exiting, stoping device.");
+	tracer.stop()?;
+	Ok(())
 }
 
 fn init_logging(config: &LJResult<Conf>) {
-    if let Ok(ref config) = config {
-	if config.debug {
-	    let mut builder = Builder::from_default_env();
-	    builder
-		.filter(None, LevelFilter::Info)
-		.init();
-	    info!("Debug mode enabled from configuration file");
-	    return;
+	if let Ok(ref config) = config {
+		if config.debug {
+			let mut builder = Builder::from_default_env();
+			builder
+				.filter(None, LevelFilter::Info)
+				.init();
+			info!("Debug mode enabled from configuration file");
+			return;
+		}
 	}
-    }
-    info!("Logging level inherited from env");
-    env_logger::init();
-}
-
-fn get_helios_device() -> LJResult<NativeHeliosDac> {
-    let controller = NativeHeliosDacController::new()?;
-    let devices = controller.list_devices()?;
-    let Some(device) = devices.into_iter().next() else {
-	return Err(Box::new(LJError::HeliosDeviceMissing));
-    };
-    let device = device.open()?;
-    Ok(device)
+	info!("Logging level inherited from env");
+	env_logger::init();
 }
 
 fn get_next_frame(
-    config: &Conf,
-    speed: u32,
-    transformers: &[Box<dyn Transformers>],
-    rs: &mut RedisCtrl,
-    _black: bool
-) -> LJResult<Frame> {
+	config: &Conf,
+	transformers: &[Box<dyn Transformers>],
+	rs: &mut RedisCtrl,
+	_black: bool,
+) -> LJResult<Vec<Point>> {
+	let line = rs.get(&format!("/pl/{}/0", config.laser_id))?;
+	let mut line: Vec<Point> = line.into_iter().map(|tpl| tpl.into()).collect();
+	for transformer in transformers {
+		line = transformer.apply(&line);
+	}
 
-    
-    let line = rs.get(&format!("/pl/{}/0", config.laser_id))?;
-    let mut line: Vec<Point> = line.into_iter().map(| tpl | tpl.into()).collect();
-    for transformer in transformers {
-	line = transformer.apply(&line);
-    }
-
-    info!("Line: {:?}", line);
-    
-    let line2 : Vec<helios_dac::Point> = line.into_iter().map(| p | p.into()).collect();
-    Ok(Frame::new(speed, line2))
+	info!("Line: {:?}", line);
+	Ok(line)
 }