minor cleanup

frontend.html

@@ -1,10 +1,12 @@
 <p>
 <button onClick="openCamera()">Camera</button>
 <button onClick="openScreensharing()">Screensharing</button>
+<!--
 <input type="number" id="x" />
 <input type="number" id="y" />
 <input type="number" id="width" />
 <input type="number" id="height" />
+-->
 <button onClick="startStream()">Start stream</button>
 </p>
 
@@ -42,7 +44,7 @@ async function startStream() {
   canvas.width = width;
   canvas.height = height;
 
-  const ws = new WebSocket("ws://127.0.0.1:8080/stream");
+  const ws = new WebSocket(`${location.protocol === 'https:' ? 'wss' : 'ws'}://${location.host}/stream`);
 
   ws.onmessage = (ev) => {
     console.info('onmessage', ev);
@@ -66,25 +68,19 @@ async function startStream() {
   };
 
   function render() {
-    //skip = (skip + 1) % 3;
-    if (skip === 0) {
-      ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
-      ctx.filter = 'contrast(300%)';
-      const pixel = ctx.getImageData(0, 0, canvas.width, canvas.height);
+    ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
+    ctx.filter = 'contrast(300%)';
+    const pixel = ctx.getImageData(0, 0, canvas.width, canvas.height);
 
-      for (var i = 0; i < width * height; i++) {
-        fb[offset+3*i] = pixel.data[4*i];
-        fb[offset+3*i+1] = pixel.data[4*i+1];
-        fb[offset+3*i+2] = pixel.data[4*i+2];
-      }
-
-      if (ws.readyState === 1) {
-        ws.send(fb);
-      }
+    for (var i = 0; i < width * height; i++) {
+      fb[offset+3*i] = pixel.data[4*i];
+      fb[offset+3*i+1] = pixel.data[4*i+1];
+      fb[offset+3*i+2] = pixel.data[4*i+2];
     }
 
-    // setTimeout(render, 1000/30.0);
-    // requestAnimationFrame(render);
+    if (ws.readyState === 1) {
+      ws.send(fb);
+    }
   }
 
   //render();

server.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"flag"
-	"html/template"
 	"log"
     "net"
 	"net/http"
@@ -41,7 +40,7 @@ func stream(w http.ResponseWriter, r *http.Request) {
 }
 
 func home(w http.ResponseWriter, r *http.Request) {
-	homeTemplate.Execute(w, "ws://"+r.Host+"/echo")
+    http.ServeFile(w, r, "frontend.html")
 }
 
 func main() {