829 lines
28 KiB
JavaScript
829 lines
28 KiB
JavaScript
/**
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* Sesame AI Voice Chat Client
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*
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* A web client that connects to a Sesame AI voice chat server and enables
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* real-time voice conversation with an AI assistant.
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*/
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// Configuration constants
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const SERVER_URL = window.location.hostname === 'localhost' ?
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'http://localhost:5000' : window.location.origin;
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const ENERGY_WINDOW_SIZE = 15;
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const CLIENT_SILENCE_DURATION_MS = 750;
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// DOM elements
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const elements = {
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conversation: null,
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streamButton: null,
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clearButton: null,
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thresholdSlider: null,
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thresholdValue: null,
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visualizerCanvas: null,
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visualizerLabel: null,
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volumeLevel: null,
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statusDot: null,
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statusText: null,
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speakerSelection: null,
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autoPlayResponses: null,
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showVisualizer: null
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};
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// Application state
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const state = {
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socket: null,
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audioContext: null,
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analyser: null,
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microphone: null,
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streamProcessor: null,
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isStreaming: false,
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isSpeaking: false,
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silenceThreshold: 0.01,
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energyWindow: [],
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silenceTimer: null,
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volumeUpdateInterval: null,
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visualizerAnimationFrame: null,
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currentSpeaker: 0
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};
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// Visualizer variables
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let canvasContext = null;
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let visualizerBufferLength = 0;
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let visualizerDataArray = null;
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// Initialize the application
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function initializeApp() {
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// Initialize the UI elements
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initializeUIElements();
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// Initialize socket.io connection
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setupSocketConnection();
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// Setup event listeners
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setupEventListeners();
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// Initialize visualizer
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setupVisualizer();
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// Show welcome message
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addSystemMessage('Welcome to Sesame AI Voice Chat! Click "Start Conversation" to begin.');
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}
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// Initialize UI elements
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function initializeUIElements() {
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// Store references to UI elements
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elements.conversation = document.getElementById('conversation');
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elements.streamButton = document.getElementById('streamButton');
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elements.clearButton = document.getElementById('clearButton');
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elements.thresholdSlider = document.getElementById('thresholdSlider');
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elements.thresholdValue = document.getElementById('thresholdValue');
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elements.visualizerCanvas = document.getElementById('audioVisualizer');
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elements.visualizerLabel = document.getElementById('visualizerLabel');
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elements.volumeLevel = document.getElementById('volumeLevel');
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elements.statusDot = document.getElementById('statusDot');
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elements.statusText = document.getElementById('statusText');
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elements.speakerSelection = document.getElementById('speakerSelect'); // Changed to match HTML
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elements.autoPlayResponses = document.getElementById('autoPlayResponses');
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elements.showVisualizer = document.getElementById('showVisualizer');
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}
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// Setup Socket.IO connection
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function setupSocketConnection() {
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state.socket = io(SERVER_URL);
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// Connection events
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state.socket.on('connect', () => {
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console.log('Connected to server');
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updateConnectionStatus(true);
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});
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state.socket.on('disconnect', () => {
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console.log('Disconnected from server');
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updateConnectionStatus(false);
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// Stop streaming if active
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if (state.isStreaming) {
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stopStreaming(false);
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}
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});
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state.socket.on('error', (data) => {
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console.error('Socket error:', data.message);
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addSystemMessage(`Error: ${data.message}`);
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});
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// Register message handlers
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state.socket.on('audio_response', handleAudioResponse);
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state.socket.on('transcription', handleTranscription);
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state.socket.on('context_updated', handleContextUpdate);
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state.socket.on('streaming_status', handleStreamingStatus);
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}
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// Setup event listeners
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function setupEventListeners() {
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// Stream button
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elements.streamButton.addEventListener('click', toggleStreaming);
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// Clear button
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elements.clearButton.addEventListener('click', clearConversation);
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// Threshold slider
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elements.thresholdSlider.addEventListener('input', updateThreshold);
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// Speaker selection
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elements.speakerSelection.addEventListener('change', () => {
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state.currentSpeaker = parseInt(elements.speakerSelection.value, 10);
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});
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// Visualizer toggle
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elements.showVisualizer.addEventListener('change', toggleVisualizerVisibility);
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}
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// Setup audio visualizer
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function setupVisualizer() {
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if (!elements.visualizerCanvas) return;
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canvasContext = elements.visualizerCanvas.getContext('2d');
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// Set canvas dimensions
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elements.visualizerCanvas.width = elements.visualizerCanvas.offsetWidth;
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elements.visualizerCanvas.height = elements.visualizerCanvas.offsetHeight;
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// Initialize the visualizer
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drawVisualizer();
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}
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// Update connection status UI
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function updateConnectionStatus(isConnected) {
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elements.statusDot.classList.toggle('active', isConnected);
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elements.statusText.textContent = isConnected ? 'Connected' : 'Disconnected';
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}
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// Toggle streaming state
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function toggleStreaming() {
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if (state.isStreaming) {
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stopStreaming(true);
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} else {
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startStreaming();
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}
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}
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// Start streaming audio to the server
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function startStreaming() {
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if (state.isStreaming) return;
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// Request microphone access
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navigator.mediaDevices.getUserMedia({ audio: true, video: false })
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.then(stream => {
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// Show processing state while setting up
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elements.streamButton.innerHTML = '<i class="fas fa-spinner fa-spin"></i> Initializing...';
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// Create audio context
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state.audioContext = new (window.AudioContext || window.webkitAudioContext)();
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// Create microphone source
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state.microphone = state.audioContext.createMediaStreamSource(stream);
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// Create analyser for visualizer
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state.analyser = state.audioContext.createAnalyser();
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state.analyser.fftSize = 256;
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visualizerBufferLength = state.analyser.frequencyBinCount;
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visualizerDataArray = new Uint8Array(visualizerBufferLength);
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// Connect microphone to analyser
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state.microphone.connect(state.analyser);
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// Create script processor for audio processing
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const bufferSize = 4096;
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state.streamProcessor = state.audioContext.createScriptProcessor(bufferSize, 1, 1);
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// Set up audio processing callback
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state.streamProcessor.onaudioprocess = handleAudioProcess;
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// Connect the processors
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state.analyser.connect(state.streamProcessor);
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state.streamProcessor.connect(state.audioContext.destination);
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// Update UI
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state.isStreaming = true;
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elements.streamButton.innerHTML = '<i class="fas fa-microphone"></i> Listening...';
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elements.streamButton.classList.add('recording');
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// Initialize energy window
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state.energyWindow = [];
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// Start volume meter updates
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state.volumeUpdateInterval = setInterval(updateVolumeMeter, 100);
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// Start visualizer if enabled
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if (elements.showVisualizer.checked && !state.visualizerAnimationFrame) {
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drawVisualizer();
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}
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// Show starting message
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addSystemMessage('Listening... Speak clearly into your microphone.');
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// Notify the server that we're starting
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state.socket.emit('stream_audio', {
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audio: '',
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speaker: state.currentSpeaker
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});
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})
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.catch(err => {
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console.error('Error accessing microphone:', err);
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addSystemMessage(`Error: ${err.message}. Please make sure your microphone is connected and you've granted permission.`);
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elements.streamButton.innerHTML = '<i class="fas fa-microphone"></i> Start Conversation';
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});
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}
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// Stop streaming audio
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function stopStreaming(notifyServer = true) {
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if (!state.isStreaming) return;
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// Update UI first
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elements.streamButton.innerHTML = '<i class="fas fa-microphone"></i> Start Conversation';
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elements.streamButton.classList.remove('recording');
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elements.streamButton.classList.remove('processing');
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// Stop volume meter updates
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if (state.volumeUpdateInterval) {
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clearInterval(state.volumeUpdateInterval);
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state.volumeUpdateInterval = null;
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}
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// Stop all audio processing
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if (state.streamProcessor) {
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state.streamProcessor.disconnect();
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state.streamProcessor = null;
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}
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if (state.analyser) {
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state.analyser.disconnect();
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}
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if (state.microphone) {
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state.microphone.disconnect();
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}
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// Close audio context
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if (state.audioContext && state.audioContext.state !== 'closed') {
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state.audioContext.close().catch(err => console.warn('Error closing audio context:', err));
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}
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// Cleanup animation frames
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if (state.visualizerAnimationFrame) {
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cancelAnimationFrame(state.visualizerAnimationFrame);
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state.visualizerAnimationFrame = null;
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}
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// Reset state
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state.isStreaming = false;
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state.isSpeaking = false;
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// Notify the server
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if (notifyServer && state.socket && state.socket.connected) {
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state.socket.emit('stop_streaming', {
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speaker: state.currentSpeaker
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});
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}
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// Show message
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addSystemMessage('Conversation paused. Click "Start Conversation" to resume.');
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}
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// Handle audio processing
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function handleAudioProcess(event) {
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const inputData = event.inputBuffer.getChannelData(0);
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// Log audio buffer statistics
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console.log(`Audio buffer: length=${inputData.length}, sample rate=${state.audioContext.sampleRate}Hz`);
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// Calculate audio energy (volume level)
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const energy = calculateAudioEnergy(inputData);
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console.log(`Energy: ${energy.toFixed(6)}, threshold: ${state.silenceThreshold}`);
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// Update energy window for averaging
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updateEnergyWindow(energy);
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// Calculate average energy
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const avgEnergy = calculateAverageEnergy();
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// Determine if audio is silent
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const isSilent = avgEnergy < state.silenceThreshold;
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console.log(`Silent: ${isSilent ? 'Yes' : 'No'}, avg energy: ${avgEnergy.toFixed(6)}`);
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// Handle speech state based on silence
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handleSpeechState(isSilent);
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// Only send audio chunk if we detect speech
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if (!isSilent) {
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// Create a resampled version at 24kHz for the server
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// Most WebRTC audio is 48kHz, but we want 24kHz for the model
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const resampledData = downsampleBuffer(inputData, state.audioContext.sampleRate, 24000);
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console.log(`Resampled audio: ${state.audioContext.sampleRate}Hz → 24000Hz, new length: ${resampledData.length}`);
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// Send the audio chunk to the server
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sendAudioChunk(resampledData, state.currentSpeaker);
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}
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}
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// Cleanup audio resources when done
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function cleanupAudioResources() {
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// Stop all audio processing
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if (state.streamProcessor) {
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state.streamProcessor.disconnect();
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state.streamProcessor = null;
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}
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if (state.analyser) {
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state.analyser.disconnect();
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state.analyser = null;
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}
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if (state.microphone) {
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state.microphone.disconnect();
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state.microphone = null;
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}
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// Close audio context
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if (state.audioContext && state.audioContext.state !== 'closed') {
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state.audioContext.close().catch(err => console.warn('Error closing audio context:', err));
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}
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// Cancel all timers and animation frames
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if (state.volumeUpdateInterval) {
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clearInterval(state.volumeUpdateInterval);
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state.volumeUpdateInterval = null;
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}
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if (state.visualizerAnimationFrame) {
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cancelAnimationFrame(state.visualizerAnimationFrame);
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state.visualizerAnimationFrame = null;
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}
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if (state.silenceTimer) {
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clearTimeout(state.silenceTimer);
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state.silenceTimer = null;
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}
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}
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// Clear conversation history
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function clearConversation() {
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if (elements.conversation) {
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elements.conversation.innerHTML = '';
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addSystemMessage('Conversation cleared.');
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// Notify server to clear context
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if (state.socket && state.socket.connected) {
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state.socket.emit('clear_context');
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}
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}
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}
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// Calculate audio energy (volume)
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function calculateAudioEnergy(buffer) {
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let sum = 0;
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for (let i = 0; i < buffer.length; i++) {
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sum += buffer[i] * buffer[i];
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}
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return Math.sqrt(sum / buffer.length);
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}
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// Update energy window for averaging
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function updateEnergyWindow(energy) {
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state.energyWindow.push(energy);
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if (state.energyWindow.length > ENERGY_WINDOW_SIZE) {
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state.energyWindow.shift();
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}
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}
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// Calculate average energy from window
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function calculateAverageEnergy() {
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if (state.energyWindow.length === 0) return 0;
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const sum = state.energyWindow.reduce((a, b) => a + b, 0);
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return sum / state.energyWindow.length;
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}
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// Update the threshold from the slider
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function updateThreshold() {
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state.silenceThreshold = parseFloat(elements.thresholdSlider.value);
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elements.thresholdValue.textContent = state.silenceThreshold.toFixed(3);
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}
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// Update the volume meter display
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function updateVolumeMeter() {
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if (!state.isStreaming || !state.energyWindow.length) return;
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const avgEnergy = calculateAverageEnergy();
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// Scale energy to percentage (0-100)
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// Typically, energy values will be very small (e.g., 0.001 to 0.1)
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// So we multiply by a factor to make it more visible
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const scaleFactor = 1000;
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const percentage = Math.min(100, Math.max(0, avgEnergy * scaleFactor));
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// Update volume meter width
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elements.volumeLevel.style.width = `${percentage}%`;
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// Change color based on level
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if (percentage > 70) {
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elements.volumeLevel.style.backgroundColor = '#ff5252';
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} else if (percentage > 30) {
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elements.volumeLevel.style.backgroundColor = '#4CAF50';
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} else {
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elements.volumeLevel.style.backgroundColor = '#4c84ff';
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}
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}
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// Handle speech/silence state transitions
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function handleSpeechState(isSilent) {
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if (state.isSpeaking && isSilent) {
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// Transition from speaking to silence
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if (!state.silenceTimer) {
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state.silenceTimer = setTimeout(() => {
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// Only consider it a real silence after a certain duration
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// This prevents detecting brief pauses as the end of speech
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state.isSpeaking = false;
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state.silenceTimer = null;
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}, CLIENT_SILENCE_DURATION_MS);
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}
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} else if (state.silenceTimer && !isSilent) {
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// User started speaking again, cancel the silence timer
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clearTimeout(state.silenceTimer);
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state.silenceTimer = null;
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}
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// Update speaking state for non-silent audio
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if (!isSilent) {
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state.isSpeaking = true;
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}
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}
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// Send audio chunk to server
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function sendAudioChunk(audioData, speaker) {
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if (!state.socket || !state.socket.connected) {
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console.warn('Socket not connected');
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return;
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}
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console.log(`Creating WAV from audio data: length=${audioData.length}`);
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// Check for NaN or invalid values
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let hasNaN = false;
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let min = Infinity;
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let max = -Infinity;
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let sum = 0;
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for (let i = 0; i < audioData.length; i++) {
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if (isNaN(audioData[i]) || !isFinite(audioData[i])) {
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hasNaN = true;
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console.warn(`Invalid audio value at index ${i}: ${audioData[i]}`);
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break;
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}
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min = Math.min(min, audioData[i]);
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max = Math.max(max, audioData[i]);
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sum += audioData[i];
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}
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if (hasNaN) {
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console.warn('Audio data contains NaN or Infinity values. Creating silent audio instead.');
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audioData = new Float32Array(audioData.length).fill(0);
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} else {
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const avg = sum / audioData.length;
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console.log(`Audio stats: min=${min.toFixed(4)}, max=${max.toFixed(4)}, avg=${avg.toFixed(4)}`);
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}
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try {
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// Create WAV blob with proper format
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const wavData = createWavBlob(audioData, 24000);
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console.log(`WAV blob created: size=${wavData.size} bytes, type=${wavData.type}`);
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const reader = new FileReader();
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reader.onloadend = function() {
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try {
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// Get base64 data
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const base64data = reader.result;
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console.log(`Base64 data created: length=${base64data.length}`);
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// Validate the base64 data before sending
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if (!base64data || base64data.length < 100) {
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console.warn('Generated base64 data is too small or invalid');
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return;
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}
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// Send the audio chunk to the server
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console.log('Sending audio data to server...');
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state.socket.emit('stream_audio', {
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audio: base64data,
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speaker: speaker
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});
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console.log('Audio data sent successfully');
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} catch (err) {
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console.error('Error preparing audio data:', err);
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}
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};
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reader.onerror = function(err) {
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console.error('Error reading audio data:', err);
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};
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reader.readAsDataURL(wavData);
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} catch (err) {
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console.error('Error creating WAV data:', err);
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}
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}
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// Create WAV blob from audio data with validation
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function createWavBlob(audioData, sampleRate) {
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// Check if audio data is valid
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if (!audioData || audioData.length === 0) {
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console.warn('Empty audio data received');
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// Return a tiny silent audio snippet instead
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audioData = new Float32Array(100).fill(0);
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}
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// Function to convert Float32Array to Int16Array for WAV format
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function floatTo16BitPCM(output, offset, input) {
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for (let i = 0; i < input.length; i++, offset += 2) {
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const s = Math.max(-1, Math.min(1, input[i]));
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output.setInt16(offset, s < 0 ? s * 0x8000 : s * 0x7FFF, true);
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}
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}
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// Create WAV header
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function writeString(view, offset, string) {
|
|
for (let i = 0; i < string.length; i++) {
|
|
view.setUint8(offset + i, string.charCodeAt(i));
|
|
}
|
|
}
|
|
|
|
// Create WAV file with header
|
|
function encodeWAV(samples) {
|
|
const buffer = new ArrayBuffer(44 + samples.length * 2);
|
|
const view = new DataView(buffer);
|
|
|
|
// RIFF chunk descriptor
|
|
writeString(view, 0, 'RIFF');
|
|
view.setUint32(4, 36 + samples.length * 2, true);
|
|
writeString(view, 8, 'WAVE');
|
|
|
|
// fmt sub-chunk
|
|
writeString(view, 12, 'fmt ');
|
|
view.setUint32(16, 16, true);
|
|
view.setUint16(20, 1, true); // PCM format
|
|
view.setUint16(22, 1, true); // Mono channel
|
|
view.setUint32(24, sampleRate, true);
|
|
view.setUint32(28, sampleRate * 2, true); // Byte rate
|
|
view.setUint16(32, 2, true); // Block align
|
|
view.setUint16(34, 16, true); // Bits per sample
|
|
|
|
// data sub-chunk
|
|
writeString(view, 36, 'data');
|
|
view.setUint32(40, samples.length * 2, true);
|
|
floatTo16BitPCM(view, 44, samples);
|
|
|
|
return buffer;
|
|
}
|
|
|
|
// Convert audio data to TypedArray if it's a regular Array
|
|
const samples = Array.isArray(audioData) ? new Float32Array(audioData) : audioData;
|
|
|
|
// Create WAV blob
|
|
const wavBuffer = encodeWAV(samples);
|
|
return new Blob([wavBuffer], { type: 'audio/wav' });
|
|
}
|
|
|
|
// Draw audio visualizer
|
|
function drawVisualizer() {
|
|
if (!canvasContext) {
|
|
return;
|
|
}
|
|
|
|
state.visualizerAnimationFrame = requestAnimationFrame(drawVisualizer);
|
|
|
|
// Skip drawing if visualizer is hidden
|
|
if (!elements.showVisualizer.checked) {
|
|
if (elements.visualizerCanvas.style.opacity !== '0') {
|
|
elements.visualizerCanvas.style.opacity = '0';
|
|
}
|
|
return;
|
|
} else if (elements.visualizerCanvas.style.opacity !== '1') {
|
|
elements.visualizerCanvas.style.opacity = '1';
|
|
}
|
|
|
|
// Get frequency data if available
|
|
if (state.isStreaming && state.analyser) {
|
|
try {
|
|
state.analyser.getByteFrequencyData(visualizerDataArray);
|
|
} catch (e) {
|
|
console.warn('Error getting frequency data:', e);
|
|
}
|
|
} else {
|
|
// Fade out when not streaming
|
|
for (let i = 0; i < visualizerDataArray.length; i++) {
|
|
visualizerDataArray[i] = Math.max(0, visualizerDataArray[i] - 5);
|
|
}
|
|
}
|
|
|
|
// Clear canvas
|
|
canvasContext.fillStyle = 'rgb(0, 0, 0)';
|
|
canvasContext.fillRect(0, 0, elements.visualizerCanvas.width, elements.visualizerCanvas.height);
|
|
|
|
// Draw gradient bars
|
|
const width = elements.visualizerCanvas.width;
|
|
const height = elements.visualizerCanvas.height;
|
|
const barCount = Math.min(visualizerBufferLength, 64);
|
|
const barWidth = width / barCount - 1;
|
|
|
|
for (let i = 0; i < barCount; i++) {
|
|
const index = Math.floor(i * visualizerBufferLength / barCount);
|
|
const value = visualizerDataArray[index];
|
|
|
|
// Use logarithmic scale for better audio visualization
|
|
// This makes low values more visible while still maintaining full range
|
|
const logFactor = 20;
|
|
const scaledValue = Math.log(1 + (value / 255) * logFactor) / Math.log(1 + logFactor);
|
|
const barHeight = scaledValue * height;
|
|
|
|
// Position bars
|
|
const x = i * (barWidth + 1);
|
|
const y = height - barHeight;
|
|
|
|
// Create color gradient based on frequency and amplitude
|
|
const hue = i / barCount * 360; // Full color spectrum
|
|
const saturation = 80 + (value / 255 * 20); // Higher values more saturated
|
|
const lightness = 40 + (value / 255 * 20); // Dynamic brightness based on amplitude
|
|
|
|
// Draw main bar
|
|
canvasContext.fillStyle = `hsl(${hue}, ${saturation}%, ${lightness}%)`;
|
|
canvasContext.fillRect(x, y, barWidth, barHeight);
|
|
|
|
// Add reflection effect
|
|
if (barHeight > 5) {
|
|
const gradient = canvasContext.createLinearGradient(
|
|
x, y,
|
|
x, y + barHeight * 0.5
|
|
);
|
|
gradient.addColorStop(0, `hsla(${hue}, ${saturation}%, ${lightness + 20}%, 0.4)`);
|
|
gradient.addColorStop(1, `hsla(${hue}, ${saturation}%, ${lightness}%, 0)`);
|
|
canvasContext.fillStyle = gradient;
|
|
canvasContext.fillRect(x, y, barWidth, barHeight * 0.5);
|
|
|
|
// Add highlight on top of the bar for better 3D effect
|
|
canvasContext.fillStyle = `hsla(${hue}, ${saturation - 20}%, ${lightness + 30}%, 0.7)`;
|
|
canvasContext.fillRect(x, y, barWidth, 2);
|
|
}
|
|
}
|
|
|
|
// Show/hide the label
|
|
elements.visualizerLabel.style.opacity = (state.isStreaming) ? '0' : '0.7';
|
|
}
|
|
|
|
// Toggle visualizer visibility
|
|
function toggleVisualizerVisibility() {
|
|
const isVisible = elements.showVisualizer.checked;
|
|
elements.visualizerCanvas.style.opacity = isVisible ? '1' : '0';
|
|
|
|
if (isVisible && state.isStreaming && !state.visualizerAnimationFrame) {
|
|
drawVisualizer();
|
|
}
|
|
}
|
|
|
|
// Handle audio response from server
|
|
function handleAudioResponse(data) {
|
|
console.log('Received audio response');
|
|
|
|
// Create message container
|
|
const messageElement = document.createElement('div');
|
|
messageElement.className = 'message ai';
|
|
|
|
// Add text content if available
|
|
if (data.text) {
|
|
const textElement = document.createElement('p');
|
|
textElement.textContent = data.text;
|
|
messageElement.appendChild(textElement);
|
|
}
|
|
|
|
// Create and configure audio element
|
|
const audioElement = document.createElement('audio');
|
|
audioElement.controls = true;
|
|
audioElement.className = 'audio-player';
|
|
|
|
// Set audio source
|
|
const audioSource = document.createElement('source');
|
|
audioSource.src = data.audio;
|
|
audioSource.type = 'audio/wav';
|
|
|
|
// Add fallback text
|
|
audioElement.textContent = 'Your browser does not support the audio element.';
|
|
|
|
// Assemble audio element
|
|
audioElement.appendChild(audioSource);
|
|
messageElement.appendChild(audioElement);
|
|
|
|
// Add timestamp
|
|
const timeElement = document.createElement('span');
|
|
timeElement.className = 'message-time';
|
|
timeElement.textContent = new Date().toLocaleTimeString();
|
|
messageElement.appendChild(timeElement);
|
|
|
|
// Add to conversation
|
|
elements.conversation.appendChild(messageElement);
|
|
|
|
// Auto-scroll to bottom
|
|
elements.conversation.scrollTop = elements.conversation.scrollHeight;
|
|
|
|
// Auto-play if enabled
|
|
if (elements.autoPlayResponses.checked) {
|
|
audioElement.play()
|
|
.catch(err => {
|
|
console.warn('Auto-play failed:', err);
|
|
addSystemMessage('Auto-play failed. Please click play to hear the response.');
|
|
});
|
|
}
|
|
|
|
// Re-enable stream button after processing is complete
|
|
if (state.isStreaming) {
|
|
elements.streamButton.innerHTML = '<i class="fas fa-microphone"></i> Listening...';
|
|
elements.streamButton.classList.add('recording');
|
|
elements.streamButton.classList.remove('processing');
|
|
}
|
|
}
|
|
|
|
// Handle transcription response from server
|
|
function handleTranscription(data) {
|
|
console.log('Received transcription:', data.text);
|
|
|
|
// Create message element
|
|
const messageElement = document.createElement('div');
|
|
messageElement.className = 'message user';
|
|
|
|
// Add text content
|
|
const textElement = document.createElement('p');
|
|
textElement.textContent = data.text;
|
|
messageElement.appendChild(textElement);
|
|
|
|
// Add timestamp
|
|
const timeElement = document.createElement('span');
|
|
timeElement.className = 'message-time';
|
|
timeElement.textContent = new Date().toLocaleTimeString();
|
|
messageElement.appendChild(timeElement);
|
|
|
|
// Add to conversation
|
|
elements.conversation.appendChild(messageElement);
|
|
|
|
// Auto-scroll to bottom
|
|
elements.conversation.scrollTop = elements.conversation.scrollHeight;
|
|
}
|
|
|
|
// Handle context update from server
|
|
function handleContextUpdate(data) {
|
|
console.log('Context updated:', data.message);
|
|
}
|
|
|
|
// Handle streaming status updates from server
|
|
function handleStreamingStatus(data) {
|
|
console.log('Streaming status:', data.status);
|
|
|
|
if (data.status === 'stopped') {
|
|
// Reset UI if needed
|
|
if (state.isStreaming) {
|
|
stopStreaming(false); // Don't send to server since this came from server
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add a system message to the conversation
|
|
function addSystemMessage(message) {
|
|
const messageElement = document.createElement('div');
|
|
messageElement.className = 'message system';
|
|
messageElement.textContent = message;
|
|
elements.conversation.appendChild(messageElement);
|
|
|
|
// Auto-scroll to bottom
|
|
elements.conversation.scrollTop = elements.conversation.scrollHeight;
|
|
}
|
|
|
|
// Downsample audio buffer to target sample rate
|
|
function downsampleBuffer(buffer, originalSampleRate, targetSampleRate) {
|
|
if (originalSampleRate === targetSampleRate) {
|
|
return buffer;
|
|
}
|
|
|
|
const ratio = originalSampleRate / targetSampleRate;
|
|
const newLength = Math.round(buffer.length / ratio);
|
|
const result = new Float32Array(newLength);
|
|
|
|
for (let i = 0; i < newLength; i++) {
|
|
const pos = Math.round(i * ratio);
|
|
result[i] = buffer[pos];
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Initialize the application when DOM is fully loaded
|
|
document.addEventListener('DOMContentLoaded', initializeApp);
|
|
|