Speaking indicator

src/app/server/[ip]/page.tsx

@@ -41,6 +41,11 @@ export default function Server() {
               [channelId]: remainingUsers,
             };
           }),
+        onSpeaking: (voiceId) =>
+          app.setSpeaking((speaking) => ({
+            ...speaking,
+            [voiceId]: Date.now(),
+          })),
       });
     },
     [ip, messageStore.messages],

src/components/channel/voice/VoiceBox.tsx

@@ -4,7 +4,7 @@ import App from "@/types/app";
 import { ClientMessage, IndicatorContext } from "@/types/protocol";
 import { Message } from "@/types/types";
 import { useEffect, useState } from "react";
-import { startMic } from "@/lib/audio";
+import { rms, startMic } from "@/lib/audio";
 import { Button } from "../../ui/button";
 import { ChevronLeftIcon, Phone, Volume2Icon } from "lucide-react";
 import VoiceGrid from "./VoiceGrid";
@@ -28,13 +28,43 @@ export default function VoiceBox({
 
   useEffect(() => {
     if (!voiceConn) return;
+    if (!app.profile) return;
 
-    const stop = startMic(sendVoice);
+    const stop = startMic((data) => {
+      if (rms(data) > 0.02) {
+        sendVoice(data);
+
+        if (!app.profile) return;
+
+        const voiceId = app.voiceConns[channelId]?.[app.profile.id];
+        if (!voiceId) return;
+
+        app.setSpeaking((prev) => ({
+          ...prev,
+          [voiceId]: Date.now(),
+        }));
+      }
+    });
 
     return () => {
       stop.then((s) => s());
     };
-  }, [voiceConn]);
+  }, [voiceConn, channelId, app.profile?.id, app.voiceConns]);
+
+  useEffect(() => {
+    const inv = setInterval(() => {
+      const now = Date.now();
+      const TIMEOUT = 500;
+
+      app.setSpeaking((prev) =>
+        Object.fromEntries(
+          Object.entries(prev).filter(([_, ts]) => now - ts < TIMEOUT)
+        )
+      );
+    }, 250);
+
+    return () => clearInterval(inv);
+  }, []);
 
   return (
     <div className="h-svh w-full max-h-svh flex flex-col pb-5 pl-5 pr-5 gap-5">
@@ -53,9 +83,9 @@ export default function VoiceBox({
       {app.voiceConns[channelId] && (
         <VoiceGrid
           users={Object.entries(app.voiceConns[channelId]).map(
-            ([userId, _]) => ({
+            ([userId, voiceId]) => ({
               id: userId,
-              speaking: false,
+              speaking: Boolean(app.speaking[voiceId]),
             })
           )}
           app={app}

src/hooks/use-app.ts

@@ -21,10 +21,12 @@ export default function useApp(): App {
   const [currentChannel, setCurrentChannel] = useState<Channel | null>(null);
   const [server, setServer] = useState<Server>();
   const privateMessages = useMessages();
-  const [voiceConns, SetVoiceConns] = useState<
+  const [voiceConns, setVoiceConns] = useState<
     Record<string, Record<string, number>>
   >({});
 
+  const [speaking, setSpeaking] = useState<Record<number, number>>({});
+
   useEffect(() => {
     const stored = Cookies.get("servers");
     if (!stored) return;
@@ -40,8 +42,10 @@ export default function useApp(): App {
   }, []);
 
   return {
+    speaking,
+    setSpeaking,
     voiceConns,
-    setVoiceConns: SetVoiceConns,
+    setVoiceConns,
     privateMessages,
     currentChannel,
     setCurrentChannel,

src/lib/audio.ts

@@ -42,7 +42,7 @@ export async function startMic(onAudio: (data: Int16Array) => void) {
       chunk.set(buffer.splice(0, buffer.length));
     }
     onAudio(chunk);
-  }, 1000);
+  }, 500);
 
   // Return cleanup function
   return () => {
@@ -101,3 +101,12 @@ export function playPCM16(u8: Uint8Array) {
   src.connect(audioCtx.destination);
   src.start();
 }
+
+export function rms(samples: Int16Array): number {
+  let sum = 0;
+  for (let i = 0; i < samples.length; i++) {
+    const s = samples[i] / 32768; // normalize to [-1, 1]
+    sum += s * s;
+  }
+  return Math.sqrt(sum / samples.length);
+}

src/lib/auth.ts

@@ -17,6 +17,7 @@ type AuthParams = {
   onVoice?: (userId: string, bytes: number[]) => void;
   onVoiceJoin?: (userId: string, channelId: string, voiceId: number) => void;
   onVoiceLeave?: (userId: string, channelId: string, voiceId: number) => void;
+  onSpeaking?: (voiceId: number) => void;
 };
 
 export default async function auth({
@@ -28,6 +29,7 @@ export default async function auth({
   onIndicator,
   onVoiceJoin,
   onVoiceLeave,
+  onSpeaking,
 }: AuthParams) {
   console.log("Authenticating with server id:", id);
 
@@ -53,6 +55,7 @@ export default async function auth({
       const buffer = await m.data.arrayBuffer();
       const bytes = new Uint8Array(buffer);
       playPCM16(bytes);
+      if (onSpeaking) onSpeaking(new DataView(buffer).getUint16(0, true));
       return;
     }
 
@@ -82,14 +85,13 @@ export default async function auth({
 
     switch (msg.type) {
       case "authenticated":
-        if (!onIndicator) break;
-        msg.params.indicators.forEach(onIndicator);
-        if (!onVoiceJoin) break;
-        Object.entries(msg.params.voice_chat).forEach(([channelId, users]) =>
-          Object.entries(users).forEach(([userId, voiceId]) =>
-            onVoiceJoin(userId, channelId, voiceId)
-          )
-        );
+        if (onIndicator) msg.params.indicators.forEach(onIndicator);
+        if (onVoiceJoin)
+          Object.entries(msg.params.voice_chat).forEach(([channelId, users]) =>
+            Object.entries(users).forEach(([userId, voiceId]) =>
+              onVoiceJoin(userId, channelId, voiceId)
+            )
+          );
         break;
 
       case "message_create":

src/types/app.ts

@@ -38,4 +38,7 @@ export default interface App {
 
   voiceConns: Record<string, Record<string, number>>;
   setVoiceConns: SetState<Record<string, Record<string, number>>>;
+
+  speaking: Record<number, number>;
+  setSpeaking: SetState<Record<number, number>>;
 }