How to set a virtual speaker as the device for livekit's input and output device

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programatically and doing this for video agent

Hey there! If you want to programmatically set input and output devices for a video agent in LiveKit, here are some friendly ways to do it: 1. Using the Flutter Client SDK:

// Set audio input device
await room.setAudioInputDevice(device);

// Set audio output device
await room.setAudioOutputDevice(device);

// Set video input device
await room.setVideoInputDevice(device);

2. Using the LiveKit Agents:

# Create a custom RoomIO instance
room_io = RoomIO(
    agent_session=agent_session,
    room=room,
    participant=selected_participant,
    input_options=input_options,
    output_options=output_options
)

# Set devices through the RoomIO instance
room_io.audio_input.set_participant(participant_identity)
room_io.video_input.set_participant(participant_identity)

3. Using Device Management APIs:

// List available devices
const devices = await Room.getLocalDevices('videoinput');

// Switch to a specific device
await room.switchActiveDevice('videoinput', deviceId);

4. Using MediaDeviceContext (Flutter Components):

// Select audio input device
mediaDeviceContext.selectAudioInput(device);

// Select audio output device
mediaDeviceContext.selectAudioOutput(device);

// Select video input device
mediaDeviceContext.selectVideoInput(device);

Just a quick heads-up: make sure to list out your devices before switching, give the right permissions, and keep in mind any platform quirks. If you hit any bumps or want to chat more about it, I’m here to help! Sources: lib/src/hardware/hardware.dart | Building voice agents | LiveKit Docs | examples/demo/demo.ts | lib/src/context/media_device_context.dart

i am using AgentSession and also i am doing it using python sdk

Hey there! If you want to set your input and output devices programmatically using AgentSession in LiveKit, here’s a simple way to do it: 1. Toggle Audio Input:

# Turn audio input on
session.input.set_audio_enabled(True)

# Turn audio input off
session.input.set_audio_enabled(False)

2. Set Up Initial Input/Output Settings:

session = AgentSession(
    room_input_options=RoomInputOptions(audio_enabled=False),
    room_output_options=RoomOutputOptions(audio_enabled=False)
)

These steps help you control your audio input and output settings whether you’re just starting your session or adjusting things on the fly. If you have any questions or want me to walk you through anything else, just let me know—I’m here to help! Sources: examples/other/text_only.py

I have multiple speakers and mics on my laptop, lets say i want to select speaker and mic B. how can i do it

Hey there! If you want to pick specific speakers and microphones programmatically using LiveKit, here’s a simple way to do it: 1. Check Out Your Available Devices: You can list all the devices you have using these handy APIs:

# List available devices
const devices = await Room.getLocalDevices('audioinput'); // For microphones
const devices = await Room.getLocalDevices('audiooutput'); // For speakers

2. Choose Your Favorite Devices: Once you’ve got the device IDs, just switch to the ones you want like this:

# Switch to a specific device
await room.switchActiveDevice('audioinput', micDeviceId); // For microphone
await room.switchActiveDevice('audiooutput', speakerDeviceId); // For speaker

Just swap out

micDeviceId

and

speakerDeviceId

with the IDs of the microphone and speaker you want to use. If you have any questions or want a hand with this, just let me know—I’m here to help!

show the python code. i have this

async def entrypoint(ctx: agents.JobContext) -> None:
    """Main entrypoint for the voice agent configured for console operation."""
    try:
        print(":robot_face: Starting voice agent from console...")
        print(f":link: Room name: {ctx.room.name}")
        print(f":id: Room ID: {ctx.room.sid}")

I don't have the answer you're looking for. You could also try asking your question: • in one of the other Slack channels or • to https://deepwiki.com/livekit/livekit_composite which is trained on all LiveKit source code If you find the answer, please post it here to help others!