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# ask-ai
w
@millions-hair-24956 how many classes or UI stuffs do we have for the represntaiton fo sound in livekit
g
It seems likely that LiveKit provides several components and hooks for representing sound in its UI. For React, there are components like 
AudioTrack
, 
RoomAudioRenderer
, and 
AudioVisualizer
that can be used to render and manage audio tracks within a LiveKit room. The 
AudioTrack
component is responsible for rendering participant audio tracks, while 
RoomAudioRenderer
handles remote participants' audio tracks, ensuring microphones and screen shares are audible. The 
AudioVisualizer
can be used to visually represent audio levels. Additionally, LiveKit offers hooks such as 
useTrackVolume
to monitor audio levels and 
useStartAudio
to manage audio playback permissions in browsers. These components and hooks are designed to integrate seamlessly with LiveKit's React components, providing a comprehensive toolkit for audio representation. Would you like more detail on any specific component or hook? Sources: - https://docs.livekit.io/components-android/livekit-compose-components/io.livekit.android.compose.state/-voice-assistant/agent.html - https://docs.livekit.io/components-android/livekit-compose-components/io.livekit.android.compose.flow/-data-handler/-data-handler.html 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
w
@millions-hair-24956 in this code i also want video and screen share in the control bar 'use client' import { AnimatePresence, motion } from 'framer-motion' import { LiveKitRoom, useVoiceAssistant, BarVisualizer, RoomAudioRenderer, VoiceAssistantControlBar, AgentState, DisconnectButton, } from '@livekit/components-react' import { ControlBar } from "@livekit/components-react"; import { useCallback, useEffect, useState } from 'react' import { MediaDeviceFailure } from 'livekit-client' import type { ConnectionDetails } from './api/connection-details/route' import { NoAgentNotification } from '@/components/NoAgentNotification' import { CloseIcon } from '@/components/CloseIcon' import { useKrispNoiseFilter } from '@livekit/components-react/krisp' export default function Page() { const [connectionDetails, updateConnectionDetails] = useState< ConnectionDetails | undefined >(undefined) const [agentState, setAgentState] = useState<AgentState>('disconnected') const onConnectButtonClicked = useCallback(async () => { // Generate room connection details, including: // - A random Room name // - A random Participant name // - An Access Token to permit the participant to join the room // - The URL of the LiveKit server to connect to // // In real-world application, you would likely allow the user to specify their // own participant name, and possibly to choose from existing rooms to join. const url = new URL( process.env.NEXT_PUBLIC_CONN_DETAILS_ENDPOINT ?? '/api/connection-details', window.location.origin, ) const response = await fetch(url.toString()) const connectionDetailsData = await response.json() updateConnectionDetails(connectionDetailsData) }, []) return ( <main data-lk-theme="default" className="h-full grid content-center bg-[var(--lk-bg)]" > <LiveKitRoom token={connectionDetails?.participantToken} serverUrl={connectionDetails?.serverUrl} connect={connectionDetails !== undefined} audio={true} video={false} onMediaDeviceFailure={onDeviceFailure} onDisconnected={() => { updateConnectionDetails(undefined) }} className="grid grid-rows-[2fr_1fr] items-center" > {/* <ControlBar /> */} <SimpleVoiceAssistant onStateChange={setAgentState} /> <ControlBar onConnectButtonClicked={onConnectButtonClicked} agentState={agentState} /> <RoomAudioRenderer /> <NoAgentNotification state={agentState} /> </LiveKitRoom> </main> ) } function SimpleVoiceAssistant(props: { onStateChange: (state: AgentState) => void }) { const { state, audioTrack } = useVoiceAssistant() useEffect(() => { props.onStateChange(state) }, [props, state]) return ( //this is for the visualizer of the audio spoke by the agent <div className="h-[300px] max-w-[20vw] mx-auto"> <BarVisualizer state={state} barCount={10} trackRef={audioTrack} className="agent-visualizer" options={{ minHeight: 5 }} /> </div> ) } function ControlBar(props: { onConnectButtonClicked: () => void agentState: AgentState }) { /** * Use Krisp background noise reduction when available. * Note: This is only available on Scale plan, see {@link https://livekit.io/pricing | LiveKit Pricing} for more details. */ const krisp = useKrispNoiseFilter() useEffect(() => { krisp.setNoiseFilterEnabled(true) }, []) return ( <div className="relative h-[100px]"> <AnimatePresence> {props.agentState === 'disconnected' && ( <motion.button initial={{ opacity: 0, top: 0 }} animate={{ opacity: 1 }} exit={{ opacity: 0, top: '-10px' }} transition={{ duration: 1, ease: [0.09, 1.04, 0.245, 1.055] }} className="uppercase absolute left-1/2 -translate-x-1/2 px-4 py-2 bg-white text-black rounded-md" onClick={() => props.onConnectButtonClicked()} > Start a conversation </motion.button> )} </AnimatePresence> <AnimatePresence> {props.agentState !== 'disconnected' && props.agentState !== 'connecting' && ( <motion.div initial={{ opacity: 0, top: '10px' }} animate={{ opacity: 1, top: 0 }} exit={{ opacity: 0, top: '-10px' }} transition={{ duration: 0.4, ease: [0.09, 1.04, 0.245, 1.055] }} className="flex h-8 absolute left-1/2 -translate-x-1/2 justify-center" > <VoiceAssistantControlBar controls={{ leave: false }} /> <DisconnectButton> <CloseIcon /> </DisconnectButton> </motion.div> )} </AnimatePresence> </div> ) } function onDeviceFailure(error?: MediaDeviceFailure) { console.error(error) alert( 'Error acquiring camera or microphone permissions. Please make sure you grant the necessary permissions in your browser and reload the tab', ) }
g
To include video and screen share controls in the 
ControlBar
, you can use the 
TrackToggle
component from LiveKit's React components. This component allows you to toggle video and screen share tracks. Here's how you can modify your 
ControlBar
to include these functionalities: 1. Import 
TrackToggle
: Ensure you import the 
TrackToggle
component from 
@livekit/components-react
. 2. Add 
TrackToggle
for Video and Screen Share: Use the 
TrackToggle
component within your 
ControlBar
to manage video and screen share tracks. Here's an example of how you can modify your `ControlBar`:
Copy code
import { TrackToggle } from '@livekit/components-react';

function ControlBar(props: {
  onConnectButtonClicked: () => void
  agentState: AgentState
}) {
  const krisp = useKrispNoiseFilter();
  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, []);

  return (
    <div className="relative h-[100px]">
      <AnimatePresence>
        {props.agentState === 'disconnected' && (
          <motion.button
            initial={{ opacity: 0, top: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0, top: '-10px' }}
            transition={{ duration: 1, ease: [0.09, 1.04, 0.245, 1.055] }}
            className="uppercase absolute left-1/2 -translate-x-1/2 px-4 py-2 bg-white text-black rounded-md"
            onClick={() => props.onConnectButtonClicked()}
          >
            Start a conversation
          </motion.button>
        )}
      </AnimatePresence>
      <AnimatePresence>
        {props.agentState !== 'disconnected' &&
          props.agentState !== 'connecting' && (
            <motion.div
              initial={{ opacity: 0, top: '10px' }}
              animate={{ opacity: 1, top: 0 }}
              exit={{ opacity: 0, top: '-10px' }}
              transition={{ duration: 0.4, ease: [0.09, 1.04, 0.245, 1.055] }}
              className="flex h-8 absolute left-1/2 -translate-x-1/2 justify-center"
            >
              <VoiceAssistantControlBar controls={{ leave: false }} />
              <TrackToggle source={Track.Source.Camera} />
              <TrackToggle source={Track.Source.ScreenShare} />
              <DisconnectButton>
                <CloseIcon />
              </DisconnectButton>
            </motion.div>
          )}
      </AnimatePresence>
    </div>
  );
}
This code adds 
TrackToggle
components for both the camera and screen share, allowing users to toggle these features directly from the control bar. Would you like more details on any specific part of this implementation? Sources: - ControlBar 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
w
@millions-hair-24956 i wanted to make this frontend using livekit so where i am using the current frontend repo Voice assistant frontend. this i want to sacle for this curent design where we have audio , video , screen share , and a whiteboard button on bottom pannel and want to have video on right bottom corner send the whole code with directory strucutre for this ... and i want to have my own custom image for the logo of button , video , screenshare and whitebaord
g
To create a frontend using LiveKit that includes audio, video, screen share, and a whiteboard button on the bottom panel, with a video feed in the bottom right corner, you can follow these steps. This will involve setting up a React application with LiveKit components and customizing the UI to fit your design requirements. Directory Structure Here's a suggested directory structure for your project:
Copy code
my-livekit-app/
│
├── public/
│   ├── images/
│   │   ├── logo.png
│   │   ├── video-icon.png
│   │   ├── screenshare-icon.png
│   │   └── whiteboard-icon.png
│   └── index.html
│
├── src/
│   ├── components/
│   │   ├── ControlBar.tsx
│   │   ├── VideoFeed.tsx
│   │   └── Whiteboard.tsx
│   ├── styles/
│   │   └── App.css
│   ├── App.tsx
│   └── index.tsx
│
├── .env.local
├── package.json
└── tsconfig.json
Key Components 1. ControlBar.tsx: This component will include buttons for audio, video, screen share, and whiteboard. You can use 
TrackToggle
for audio and video, and custom buttons for screen share and whiteboard. 2. VideoFeed.tsx: This component will handle displaying the video feed in the bottom right corner. 3. Whiteboard.tsx: This component will manage the whiteboard functionality. Sample Code ControlBar.tsx
Copy code
import React from 'react';
import { TrackToggle } from '@livekit/components-react';
import { Track } from 'livekit-client';

const ControlBar = () => {
  return (
    <div className="control-bar">
      <TrackToggle source={Track.Source.Microphone} />
      <TrackToggle source={Track.Source.Camera} />
      <button className="control-button">
        <img src="/images/screenshare-icon.png" alt="Screen Share" />
      </button>
      <button className="control-button">
        <img src="/images/whiteboard-icon.png" alt="Whiteboard" />
      </button>
    </div>
  );
};

export default ControlBar;
VideoFeed.tsx
Copy code
import React from 'react';

const VideoFeed = () => {
  return (
    <div className="video-feed">
      {/* Video feed logic here */}
    </div>
  );
};

export default VideoFeed;
Whiteboard.tsx
Copy code
import React from 'react';

const Whiteboard = () => {
  return (
    <div className="whiteboard">
      {/* Whiteboard logic here */}
    </div>
  );
};

export default Whiteboard;
App.tsx
Copy code
import React from 'react';
import { LiveKitRoom } from '@livekit/components-react';
import ControlBar from './components/ControlBar';
import VideoFeed from './components/VideoFeed';
import Whiteboard from './components/Whiteboard';

const App = () => {
  return (
    <LiveKitRoom token="<your-token>" serverUrl="<your-server-url>" connect={true}>
      <ControlBar />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

export default App;
Customization - Icons: Replace the paths in the 
ControlBar
component with your custom images for the icons. - Styling: Use CSS in 
App.css
to position the video feed in the bottom right corner and style the control bar. This setup provides a basic structure to build upon. You can expand the functionality of each component as needed, such as implementing the whiteboard logic or customizing the video feed display. Would you like more details on any specific part of this setup? Sources: - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1729099812.700749 - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1731238750.376599 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
w
@millions-hair-24956 make sure we are able to connect to the room ... and have these funcitonality of connecting to backend and then send me the direcotry structure and the whole code for curent design where we have audio , video , screen share , and a whiteboard button on bottom pannel and want to have video on right bottom corner. and also have a leave button which disconnects through room ... send me the whole code now
g
Sure thing! I'm looking through the available data to answer your question. Hold on a second... ⏳
w
@millions-hair-24956 make sure we are able to connect to the room ... and have these funcitonality of connecting to backend and then send me the direcotry structure and the whole code for curent design where we have audio , video , screen share , and a whiteboard button on bottom pannel and want to have video on right bottom corner. and also have a leave button which disconnects through room ... send me the whole code now
g
To create a functional LiveKit application with audio, video, screen share, a whiteboard button, and a leave button, you can follow this setup. This example will include connecting to a LiveKit room, managing media tracks, and providing a UI for the specified functionalities. Directory Structure Here's a suggested directory structure for your project:
Copy code
my-livekit-app/
│
├── public/
│   ├── images/
│   │   ├── logo.png
│   │   ├── video-icon.png
│   │   ├── screenshare-icon.png
│   │   └── whiteboard-icon.png
│   └── index.html
│
├── src/
│   ├── components/
│   │   ├── ControlBar.tsx
│   │   ├── VideoFeed.tsx
│   │   └── Whiteboard.tsx
│   ├── styles/
│   │   └── App.css
│   ├── App.tsx
│   └── index.tsx
│
├── .env.local
├── package.json
└── tsconfig.json
Key Components 1. ControlBar.tsx: This component will include buttons for audio, video, screen share, whiteboard, and a leave button. 2. VideoFeed.tsx: This component will handle displaying the video feed in the bottom right corner. 3. Whiteboard.tsx: This component will manage the whiteboard functionality. Sample Code ControlBar.tsx
Copy code
import React from 'react';
import { TrackToggle, DisconnectButton } from '@livekit/components-react';
import { Track } from 'livekit-client';

const ControlBar = ({ onLeave }: { onLeave: () => void }) => {
  return (
    <div className="control-bar">
      <TrackToggle source={Track.Source.Microphone} />
      <TrackToggle source={Track.Source.Camera} />
      <button className="control-button">
        <img src="/images/screenshare-icon.png" alt="Screen Share" />
      </button>
      <button className="control-button">
        <img src="/images/whiteboard-icon.png" alt="Whiteboard" />
      </button>
      <DisconnectButton onClick={onLeave}>
        <img src="/images/leave-icon.png" alt="Leave" />
      </DisconnectButton>
    </div>
  );
};

export default ControlBar;
VideoFeed.tsx
Copy code
import React from 'react';

const VideoFeed = () => {
  return (
    <div className="video-feed">
      {/* Video feed logic here */}
    </div>
  );
};

export default VideoFeed;
Whiteboard.tsx
Copy code
import React from 'react';

const Whiteboard = () => {
  return (
    <div className="whiteboard">
      {/* Whiteboard logic here */}
    </div>
  );
};

export default Whiteboard;
App.tsx
Copy code
import React, { useState } from 'react';
import { LiveKitRoom } from '@livekit/components-react';
import ControlBar from './components/ControlBar';
import VideoFeed from './components/VideoFeed';
import Whiteboard from './components/Whiteboard';

const App = () => {
  const [connected, setConnected] = useState(false);

  const handleLeave = () => {
    setConnected(false);
  };

  return (
    <LiveKitRoom
      token="<your-token>"
      serverUrl="<your-server-url>"
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={() => setConnected(false)}
    >
      <ControlBar onLeave={handleLeave} />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

export default App;
Customization - Icons: Replace the paths in the 
ControlBar
component with your custom images for the icons. - Styling: Use CSS in 
App.css
to position the video feed in the bottom right corner and style the control bar. This setup provides a basic structure to build upon. You can expand the functionality of each component as needed, such as implementing the whiteboard logic or customizing the video feed display. Would you like more details on any specific part of this setup? Sources: - https://docs.livekit.io/home/quickstarts/nextjs-12/#4-Make-a-page-in-your-web-app - https://docs.livekit.io/home/quickstarts/nextjs-13/#5-Make-a-page-in-your-web-app 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
To create a LiveKit application with the specified features, including custom buttons for mic, video, whiteboard, and a leave button, as well as a video feed in the bottom right corner, you can follow this setup. This example will include connecting to a LiveKit room, managing media tracks, and providing a UI for the specified functionalities. Directory Structure Here's a suggested directory structure for your project:
Copy code
my-livekit-app/
│
├── public/
│   ├── images/
│   │   ├── mic-icon.png
│   │   ├── video-icon.png
│   │   ├── screenshare-icon.png
│   │   ├── whiteboard-icon.png
│   │   └── leave-icon.png
│   └── index.html
│
├── src/
│   ├── components/
│   │   ├── ControlBar.tsx
│   │   ├── VideoFeed.tsx
│   │   └── Whiteboard.tsx
│   ├── styles/
│   │   └── App.css
│   ├── App.tsx
│   └── index.tsx
│
├── .env.local
├── package.json
└── tsconfig.json
Key Components 1. ControlBar.tsx: This component will include buttons for audio, video, screen share, whiteboard, and a leave button. 2. VideoFeed.tsx: This component will handle displaying the video feed in the bottom right corner. 3. Whiteboard.tsx: This component will manage the whiteboard functionality. Sample Code ControlBar.tsx
Copy code
import React from 'react';
import { TrackToggle, DisconnectButton } from '@livekit/components-react';
import { Track } from 'livekit-client';

const ControlBar = ({ onLeave }: { onLeave: () => void }) => {
  return (
    <div className="control-bar">
      <TrackToggle source={Track.Source.Microphone}>
        <img src="/images/mic-icon.png" alt="Microphone" />
      </TrackToggle>
      <TrackToggle source={Track.Source.Camera}>
        <img src="/images/video-icon.png" alt="Video" />
      </TrackToggle>
      <button className="control-button">
        <img src="/images/screenshare-icon.png" alt="Screen Share" />
      </button>
      <button className="control-button">
        <img src="/images/whiteboard-icon.png" alt="Whiteboard" />
      </button>
      <DisconnectButton onClick={onLeave}>
        <img src="/images/leave-icon.png" alt="Leave" />
      </DisconnectButton>
    </div>
  );
};

export default ControlBar;
VideoFeed.tsx
Copy code
import React from 'react';

const VideoFeed = () => {
  return (
    <div className="video-feed">
      {/* Video feed logic here */}
    </div>
  );
};

export default VideoFeed;
Whiteboard.tsx
Copy code
import React from 'react';

const Whiteboard = () => {
  return (
    <div className="whiteboard">
      {/* Whiteboard logic here */}
    </div>
  );
};

export default Whiteboard;
App.tsx
Copy code
import React, { useState, useCallback } from 'react';
import { LiveKitRoom, useKrispNoiseFilter } from '@livekit/components-react';
import ControlBar from './components/ControlBar';
import VideoFeed from './components/VideoFeed';
import Whiteboard from './components/Whiteboard';

const App = () => {
  const [connected, setConnected] = useState(false);
  const krisp = useKrispNoiseFilter();

  const onConnectButtonClicked = useCallback(async () => {
    // Fetch connection details and update state
    // Example: setConnected(true);
  }, []);

  const handleLeave = () => {
    setConnected(false);
  };

  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, [krisp]);

  return (
    <LiveKitRoom
      token="<your-token>"
      serverUrl="<your-server-url>"
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={() => setConnected(false)}
    >
      <ControlBar onLeave={handleLeave} />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

export default App;
Customization - Icons: Replace the paths in the 
ControlBar
component with your custom images for the icons. - Styling: Use CSS in 
App.css
to position the video feed in the bottom right corner and style the control bar. This setup provides a basic structure to build upon. You can expand the functionality of each component as needed, such as implementing the whiteboard logic or customizing the video feed display. Would you like more details on any specific part of this setup? Sources: - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1731067594.737829 - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1729532170.564659 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
w
1. LiveKit Integration Use LiveKitRoom to manage a real-time audio-only session. Fetch connection details dynamically (room name, participant name, access token, server URL) from an API endpoint (/api/connection-details). Maintain connection state using useState. Handle automatic reconnection and graceful disconnection. 2. Voice Assistant & Audio Visualization Use useVoiceAssistant to track the assistant’s audio input and state (listening, speaking, idle). Implement BarVisualizer to represent real-time microphone activity visually. The visualizer should: Use trackRef={audioTrack} to receive audio input. 3. Control Bar & Noise Reduction Implement a ControlBar component: Show a "Start Conversation" button when disconnected. Show LiveKit’s VoiceAssistantControlBar and Disconnect Button when connected. Use Krisp Noise Filter (useKrispNoiseFilter) to enable background noise reduction (only available on LiveKit’s Scale plan). 5. Error Handling & Device Permissions Implement onDeviceFailure function to handle microphone/camera access issues: Display an alert if permissions are denied. Log errors to the console for debugging. 6. Additional Components & Dependencies Import necessary LiveKit components (LiveKitRoom, BarVisualizer, VoiceAssistantControlBar, etc.). Import icons (CloseIcon) and notifications (NoAgentNotification) from local components. Expected Behavior User clicks "Start Conversation" → Fetches connection details & joins the room. Audio visualization moves dynamically based on the user's microphone input. Control Bar updates → Shows disconnect button when connected. User clicks "Disconnect" → Leaves room & UI resets. addd these functionality to above code
Copy code
import React, { useState, useCallback } from 'react';
import { LiveKitRoom, useKrispNoiseFilter } from '@livekit/components-react';
import ControlBar from './components/ControlBar';
import VideoFeed from './components/VideoFeed';
import Whiteboard from './components/Whiteboard';

const App = () => {
  const [connected, setConnected] = useState(false);
  const krisp = useKrispNoiseFilter();

  const onConnectButtonClicked = useCallback(async () => {
    // Fetch connection details and update state
    // Example: setConnected(true);
  }, []);

  const handleLeave = () => {
    setConnected(false);
  };

  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, [krisp]);

  return (
    <LiveKitRoom
      token="<your-token>"
      serverUrl="<your-server-url>"
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={() => setConnected(false)}
    >
      <ControlBar onLeave={handleLeave} />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

export default App;
1. LiveKit Integration Use LiveKitRoom to manage a real-time audio-only session. Fetch connection details dynamically (room name, participant name, access token, server URL) from an API endpoint (/api/connection-details). Maintain connection state using useState. Handle automatic reconnection and graceful disconnection. 2. Voice Assistant & Audio Visualization Use useVoiceAssistant to track the assistant’s audio input and state (listening, speaking, idle). Implement BarVisualizer to represent real-time microphone activity visually. The visualizer should: Use trackRef={audioTrack} to receive audio input. 3. Control Bar & Noise Reduction Implement a ControlBar component: Show a "Start Conversation" button when disconnected. Show LiveKit’s VoiceAssistantControlBar and Disconnect Button when connected. Use Krisp Noise Filter (useKrispNoiseFilter) to enable background noise reduction (only available on LiveKit’s Scale plan). 5. Error Handling & Device Permissions Implement onDeviceFailure function to handle microphone/camera access issues: Display an alert if permissions are denied. Log errors to the console for debugging. 6. Additional Components & Dependencies Import necessary LiveKit components (LiveKitRoom, BarVisualizer, VoiceAssistantControlBar, etc.). Import icons (CloseIcon) and notifications (NoAgentNotification) from local components. Expected Behavior User clicks "Start Conversation" → Fetches connection details & joins the room. Audio visualization moves dynamically based on the user's microphone input. Control Bar updates → Shows disconnect button when connected. User clicks "Disconnect" → Leaves room & UI resets. addd these functionality to above code `````` import React, { useState, useCallback } from 'react'; import { LiveKitRoom, useKrispNoiseFilter } from '@livekit/components-react'; import ControlBar from './components/ControlBar'; import VideoFeed from './components/VideoFeed'; import Whiteboard from './components/Whiteboard'; const App = () => { const [connected, setConnected] = useState(false); const krisp = useKrispNoiseFilter(); const onConnectButtonClicked = useCallback(async () => { // Fetch connection details and update state // Example: setConnected(true); }, []); const handleLeave = () => { setConnected(false); }; useEffect(() => { krisp.setNoiseFilterEnabled(true); }, [krisp]); return ( <LiveKitRoom token="<your-token>" serverUrl="<your-server-url>" connect={connected} onConnected={() => setConnected(true)} onDisconnected={() => setConnected(false)} > <ControlBar onLeave={handleLeave} /> <VideoFeed /> <Whiteboard /> </LiveKitRoom> ); }; export default App; @millions-hair-24956
g
To implement the specified functionalities, you can enhance the existing code by integrating LiveKit components and handling connection details dynamically. Here's how you can achieve this: Directory Structure
Copy code
my-livekit-app/
│
├── public/
│   ├── images/
│   │   ├── mic-icon.png
│   │   ├── video-icon.png
│   │   ├── screenshare-icon.png
│   │   ├── whiteboard-icon.png
│   │   └── leave-icon.png
│   └── index.html
│
├── src/
│   ├── components/
│   │   ├── ControlBar.tsx
│   │   ├── VideoFeed.tsx
│   │   ├── Whiteboard.tsx
│   │   └── SimpleVoiceAssistant.tsx
│   ├── styles/
│   │   └── App.css
│   ├── App.tsx
│   └── index.tsx
│
├── .env.local
├── package.json
└── tsconfig.json
Code Implementation App.tsx
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import React, { useState, useCallback, useEffect } from 'react';
import { LiveKitRoom, useKrispNoiseFilter, useVoiceAssistant, BarVisualizer } from '@livekit/components-react';
import ControlBar from './components/ControlBar';
import VideoFeed from './components/VideoFeed';
import Whiteboard from './components/Whiteboard';
import SimpleVoiceAssistant from './components/SimpleVoiceAssistant';

const App = () => {
  const [connectionDetails, setConnectionDetails] = useState(null);
  const [connected, setConnected] = useState(false);
  const krisp = useKrispNoiseFilter();

  const onConnectButtonClicked = useCallback(async () => {
    try {
      const response = await fetch('/api/connection-details');
      const data = await response.json();
      setConnectionDetails(data);
      setConnected(true);
    } catch (error) {
      console.error('Failed to fetch connection details:', error);
    }
  }, []);

  const handleLeave = () => {
    setConnected(false);
    setConnectionDetails(null);
  };

  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, [krisp]);

  return (
    <LiveKitRoom
      token={connectionDetails?.participantToken}
      serverUrl={connectionDetails?.serverUrl}
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={handleLeave}
      onMediaDeviceFailure={onDeviceFailure}
    >
      <ControlBar onLeave={handleLeave} onConnectButtonClicked={onConnectButtonClicked} connected={connected} />
      <SimpleVoiceAssistant />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

function onDeviceFailure(error) {
  console.error('Device failure:', error);
  alert('Error acquiring camera or microphone permissions. Please check your settings and try again.');
}

export default App;
ControlBar.tsx
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import React from 'react';
import { VoiceAssistantControlBar, DisconnectButton } from '@livekit/components-react';

const ControlBar = ({ onLeave, onConnectButtonClicked, connected }) => {
  return (
    <div className="control-bar">
      {!connected ? (
        <button onClick={onConnectButtonClicked}>Start Conversation</button>
      ) : (
        <>
          <VoiceAssistantControlBar />
          <DisconnectButton onClick={onLeave} />
        </>
      )}
    </div>
  );
};

export default ControlBar;
SimpleVoiceAssistant.tsx
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import React from 'react';
import { useVoiceAssistant, BarVisualizer } from '@livekit/components-react';

const SimpleVoiceAssistant = () => {
  const { state, audioTrack } = useVoiceAssistant();

  return (
    <div className="voice-assistant">
      <BarVisualizer state={state} trackRef={audioTrack} barCount={10} />
    </div>
  );
};

export default SimpleVoiceAssistant;
Explanation - LiveKitRoom: Manages the connection to the LiveKit server. - useKrispNoiseFilter: Enables background noise reduction. - useVoiceAssistant: Tracks the assistant’s audio input and state. - BarVisualizer: Visualizes real-time microphone activity. - ControlBar: Displays a "Start Conversation" button when disconnected and a disconnect button when connected. - onDeviceFailure: Handles device permission issues. This setup provides a comprehensive solution for managing a real-time audio session with LiveKit, including voice assistant features and error handling. Let me know if you need further customization or details! Sources: - https://docs.livekit.io/agents/openai/client-apps/ - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1731067594.737829 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
To integrate the API route for generating connection details with LiveKit, you can set up a Next.js API route. This will handle the creation of participant tokens and return the necessary connection details. Below is the updated code and directory structure to include this functionality. Directory Structure
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my-livekit-app/
│
├── public/
│   ├── images/
│   │   ├── mic-icon.png
│   │   ├── video-icon.png
│   │   ├── screenshare-icon.png
│   │   ├── whiteboard-icon.png
│   │   └── leave-icon.png
│   └── index.html
│
├── src/
│   ├── components/
│   │   ├── ControlBar.tsx
│   │   ├── VideoFeed.tsx
│   │   ├── Whiteboard.tsx
│   │   └── SimpleVoiceAssistant.tsx
│   ├── pages/
│   │   ├── api/
│   │   │   └── connection-details.ts
│   │   └── index.tsx
│   ├── styles/
│   │   └── App.css
│
├── .env.local
├── package.json
└── tsconfig.json
API Route: 
connection-details.ts
 Create this file under `src/pages/api/connection-details.ts`:
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import {
  AccessToken,
  AccessTokenOptions,
  VideoGrant,
} from "livekit-server-sdk";
import { NextResponse } from "next/server";

const API_KEY = process.env.LIVEKIT_API_KEY;
const API_SECRET = process.env.LIVEKIT_API_SECRET;
const LIVEKIT_URL = process.env.LIVEKIT_URL;

export type ConnectionDetails = {
  serverUrl: string;
  roomName: string;
  participantName: string;
  participantToken: string;
};

export async function GET() {
  try {
    if (!LIVEKIT_URL || !API_KEY || !API_SECRET) {
      throw new Error("Environment variables are not defined");
    }

    const participantIdentity = `voice_assistant_user_${Math.floor(Math.random() * 10_000)}`;
    const roomName = `voice_assistant_room_${Math.floor(Math.random() * 10_000)}`;
    const participantToken = createParticipantToken(
      { identity: participantIdentity },
      roomName,
    );

    const data: ConnectionDetails = {
      serverUrl: LIVEKIT_URL,
      roomName,
      participantToken,
      participantName: participantIdentity,
    };
    return NextResponse.json(data);
  } catch (error) {
    if (error instanceof Error) {
      console.error(error);
      return new NextResponse(error.message, { status: 500 });
    }
  }
}

function createParticipantToken(
  userInfo: AccessTokenOptions,
  roomName: string
) {
  const at = new AccessToken(API_KEY, API_SECRET, {
    ...userInfo,
    ttl: "15m",
  });
  const grant: VideoGrant = {
    room: roomName,
    roomJoin: true,
    canPublish: true,
    canPublishData: true,
    canSubscribe: true,
  };
  at.addGrant(grant);
  return at.toJwt();
}
Main Application: 
index.tsx
 Update your main application file to use the API route:
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import React, { useState, useCallback, useEffect } from 'react';
import { LiveKitRoom, useKrispNoiseFilter } from '@livekit/components-react';
import ControlBar from '../components/ControlBar';
import VideoFeed from '../components/VideoFeed';
import Whiteboard from '../components/Whiteboard';
import SimpleVoiceAssistant from '../components/SimpleVoiceAssistant';

const App = () => {
  const [connectionDetails, setConnectionDetails] = useState(null);
  const [connected, setConnected] = useState(false);
  const krisp = useKrispNoiseFilter();

  const onConnectButtonClicked = useCallback(async () => {
    try {
      const response = await fetch('/api/connection-details');
      const data = await response.json();
      setConnectionDetails(data);
      setConnected(true);
    } catch (error) {
      console.error('Failed to fetch connection details:', error);
    }
  }, []);

  const handleLeave = () => {
    setConnected(false);
    setConnectionDetails(null);
  };

  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, [krisp]);

  return (
    <LiveKitRoom
      token={connectionDetails?.participantToken}
      serverUrl={connectionDetails?.serverUrl}
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={handleLeave}
      onMediaDeviceFailure={onDeviceFailure}
    >
      <ControlBar onLeave={handleLeave} onConnectButtonClicked={onConnectButtonClicked} connected={connected} />
      <SimpleVoiceAssistant />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

function onDeviceFailure(error) {
  console.error('Device failure:', error);
  alert('Error acquiring camera or microphone permissions. Please check your settings and try again.');
}

export default App;
Explanation - API Route: The 
connection-details.ts
file generates a participant token and returns connection details. - Environment Variables: Ensure 
.env.local
contains 
LIVEKIT_API_KEY
, 
LIVEKIT_API_SECRET
, and 
LIVEKIT_URL
. - Main Application: Fetches connection details from the API and manages the connection state. This setup provides a complete solution for managing a real-time audio session with LiveKit, including dynamic connection details and error handling. Let me know if you need further customization or details! Sources: - https://livekit-users.slack.com/archives/C07FYCB7FRQ/p1728564536.313559 - https://livekit-users.slack.com/archives/C07FVFGAUKX/p1733152587.089089 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.
Sure thing! I'm looking through the available data to answer your question. Hold on a second... ⏳
w
@millions-hair-24956 send me the whole code in this nextjs format my-next-app/ │── app/ # App Router (new in Next.js 13+) │── components/ # Shared UI components │── styles/ # Global styles │── utils/ # Helper functions │── hooks/ # Custom hooks │── public/ # Static assets │── next.config.js │── package.json │── tsconfig.json. this code
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import React, { useState, useCallback, useEffect } from 'react';
import { LiveKitRoom, useKrispNoiseFilter } from '@livekit/components-react';
import ControlBar from '../components/ControlBar';
import VideoFeed from '../components/VideoFeed';
import Whiteboard from '../components/Whiteboard';
import SimpleVoiceAssistant from '../components/SimpleVoiceAssistant';

const App = () => {
  const [connectionDetails, setConnectionDetails] = useState(null);
  const [connected, setConnected] = useState(false);
  const krisp = useKrispNoiseFilter();

  const onConnectButtonClicked = useCallback(async () => {
    try {
      const response = await fetch('/api/connection-details');
      const data = await response.json();
      setConnectionDetails(data);
      setConnected(true);
    } catch (error) {
      console.error('Failed to fetch connection details:', error);
    }
  }, []);

  const handleLeave = () => {
    setConnected(false);
    setConnectionDetails(null);
  };

  useEffect(() => {
    krisp.setNoiseFilterEnabled(true);
  }, [krisp]);

  return (
    <LiveKitRoom
      token={connectionDetails?.participantToken}
      serverUrl={connectionDetails?.serverUrl}
      connect={connected}
      onConnected={() => setConnected(true)}
      onDisconnected={handleLeave}
      onMediaDeviceFailure={onDeviceFailure}
    >
      <ControlBar onLeave={handleLeave} onConnectButtonClicked={onConnectButtonClicked} connected={connected} />
      <SimpleVoiceAssistant />
      <VideoFeed />
      <Whiteboard />
    </LiveKitRoom>
  );
};

function onDeviceFailure(error) {
  console.error('Device failure:', error);
  alert('Error acquiring camera or microphone permissions. Please check your settings and try again.');
}

export default App;
and also tell me the new dreoctry srucruer and also all other relevent code that i need in my functionlaity
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├── ControlBar.tsx
    ├── VideoFeed.tsx
    ├── Whiteboard.tsx
    └── SimpleVoiceAssistant.tsx
g
Sure thing! I'm looking through the available data to answer your question. Hold on a second... ⏳
w
@millions-hair-24956 Cannot find module '@livekit/components-react' or its corresponding type declarations.ts(2307). Cannot find module 'livekit-client' or its corresponding type declarations.ts(23
g
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