Initial proof of concept

flake.nix

@@ -23,15 +23,14 @@ Some utility commands:
       };
       rustSettings = with pkgs; {
         src = ./.;
-        #nativeBuildInputs = [ pkg-config ];
+        buildInputs = with pkgs; [ ffmpeg ];
-        #buildInputs = [ openssl ];
         cargoHash = nixpkgs.lib.fakeHash;
       };
       meta = with nixpkgs.lib; {
-        #homepage = "https://example.com";
+        homepage = "https://git.elnu.com/ElnuDev/webcam-streamer";
-        #license = [ licenses.gpl3 ];
+        license = [ licenses.gpl3 ];
         platforms = [ system ];
-        #maintainers = with maintainers; [ ];
+        maintainers = with maintainers; [ elnudev ];
       };
     in {
       devShells.${system}.default = with pkgs; mkShell {

webcam-streamer/Cargo.toml

@@ -6,3 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+actix-web = "4.4.0"
+lazy_static = "1.4.0"
+rscam = { version = "0.5.5", features = ["no_wrapper"] }

webcam-streamer/src/main.rs

@@ -1,3 +1,59 @@
-fn main() {
+use actix_web::{get, App, HttpResponse, HttpServer, Responder};
-    println!("Hello, world!");
+use lazy_static::lazy_static;
+use rscam::Camera;
+use std::{
+    sync::Mutex,
+    thread,
+};
+
+const FPS: u32 = 30;
+
+lazy_static! {
+    static ref CAMERA: Camera = {
+        let mut camera = rscam::new("/dev/video0").unwrap();
+        camera
+            .start(&rscam::Config {
+                interval: (1, FPS),
+                resolution: (1280, 720),
+                format: b"MJPG",
+                ..Default::default()
+            })
+            .unwrap();
+        camera
+    };
+    static ref CURRENT_FRAME: Mutex<Vec<u8>> = Mutex::new(Vec::new());
+}
+
+#[get("/feed.jpg")]
+async fn get_feed() -> impl Responder {
+    HttpResponse::Ok()
+        .content_type("image/jpeg")
+        .body(CURRENT_FRAME.lock().unwrap().clone())
+}
+
+#[get("/")]
+async fn get_index() -> impl Responder {
+    HttpResponse::Ok().content_type("text/html").body(format!(
+        "
+            <img src=\"feed.jpg\">
+            <script>
+                const img = document.querySelector(\"img\");
+                setInterval(() => {{
+                    img.src = \"feed.jpg?\" + new Date().getTime();
+                }}, {});
+            </script>
+        ",
+        1000.0 / FPS as f32
+    ))
+}
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    thread::spawn(move || loop {
+        *CURRENT_FRAME.lock().unwrap() = CAMERA.capture().unwrap()[..].to_owned();
+    });
+    HttpServer::new(|| App::new().service(get_index).service(get_feed))
+        .bind(("127.0.0.1", 8080))?
+        .run()
+        .await
 }