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Updating RN video transform example to use audio levels provided by the SDK #116

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Updating RN video transform example to use audio levels provided by the SDK #116

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35 changes: 3 additions & 32 deletions p2p-webrtc/video-transform/client/react-native/src/context/VoiceClientContext.tsx
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@filipi87 filipi87 Nov 11, 2025

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Need to update the package.json to use the version which provides the audio level.

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@filipi87 filipi87 Nov 11, 2025

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Waiting for this PR.

Original file line number Diff line number Diff line change
Expand Up @@ -60,8 +60,6 @@ export const VoiceClientProvider: React.FC<VoiceClientProviderProps> = ({ childr
const [localVideoTrack, setLocalVideoTrack] = useState<MediaStreamTrack | undefined>()
const [remoteVideoTrack, setRemoteVideoTrack] = useState<MediaStreamTrack | undefined>()
const [localAudioLevel, setLocalAudioLevel] = useState<number>(0)
// For controlling mock audio timer:
const mockAudioTimer = useRef<NodeJS.Timeout | null>(null)
const botSpeakingRef = useRef(false)
// Live messages to the chat
const [messages, setMessages] = useState<LiveMessage[]>([])
Expand All @@ -75,23 +73,6 @@ export const VoiceClientProvider: React.FC<VoiceClientProviderProps> = ({ childr
})
}, [])

// --- mock audio logic while SmallWebRTC does not support audio level ---
const startMockAudioLevel = useCallback(() => {
if (mockAudioTimer.current) return;
mockAudioTimer.current = setInterval(() => {
// Simulate value between 0.1 and 1.0 (e.g. for "speaking" user)
setLocalAudioLevel(Math.random() * 0.8 + 0.2)
}, 100)
}, [])

const stopMockAudioLevel = useCallback(() => {
if (mockAudioTimer.current) {
clearInterval(mockAudioTimer.current)
mockAudioTimer.current = null
}
setLocalAudioLevel(0)
}, [])

const createVoiceClient = useCallback((): PipecatClient => {
const inCallStates = new Set(["authenticating", "authenticated", "connecting", "connected", "ready"])
const options: SmallWebRTCTransportConstructorOptions = {
Expand All @@ -118,17 +99,14 @@ export const VoiceClientProvider: React.FC<VoiceClientProviderProps> = ({ childr
setIsMicEnabled(false)
setIsCamEnabled(false)
},
// TODO: SmallWebRTC doesn't support this event yet.
/*onLocalAudioLevel: (level: number) => {
onLocalAudioLevel: (level: number) => {
setLocalAudioLevel(level)
},*/
},
onUserStartedSpeaking:() => {
createLiveMessage("User started speaking", "system")
startMockAudioLevel()
},
onUserStoppedSpeaking:() => {
createLiveMessage("User stopped speaking", "system")
stopMockAudioLevel()
},
onUserTranscript:(data) => {
createLiveMessage(data.text, "user")
Expand Down Expand Up @@ -173,7 +151,7 @@ export const VoiceClientProvider: React.FC<VoiceClientProviderProps> = ({ childr
},
})
return client
}, [handleError, startMockAudioLevel, stopMockAudioLevel])
}, [handleError])

const start = useCallback(async (url: string, authorizationToken:string): Promise<void> => {
resetLiveMessages()
Expand Down Expand Up @@ -272,13 +250,6 @@ export const VoiceClientProvider: React.FC<VoiceClientProviderProps> = ({ childr
}
}, [voiceClient])

// Cleanup interval when unmounting
useEffect(() => {
return () => {
if (mockAudioTimer.current) clearInterval(mockAudioTimer.current)
}
}, [])

const contextValue = useMemo(() => ({
voiceClient,
inCall,
Expand Down