368 lines
10 KiB
JavaScript
368 lines
10 KiB
JavaScript
let isListening = false;
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let currentTrack = null;
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let currentSource = 'system'; // 'system', 'mic', 'device'
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let currentStream = null;
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let mediaRecorder = null;
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let audioChunks = [];
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let audioContext = null;
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let analyser = null;
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let animFrameId = null;
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let isProcessingAudio = false;
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function toggleTheme() {
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const html = document.documentElement;
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const isLight = html.getAttribute('data-theme') === 'light';
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const next = isLight ? 'dark' : 'light';
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html.setAttribute('data-theme', next);
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document.getElementById('theme-btn').textContent = isLight ? 'Dark' : 'Light';
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if (currentTrack && currentTrack.key) {
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window.updateWheel(currentTrack.key);
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} else {
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window.updateWheel(null);
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}
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}
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// Audio Source Management
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async function changeAudioSource(source) {
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currentSource = source;
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const deviceSelect = document.getElementById('audio-device-select');
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if (source === 'device') {
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deviceSelect.style.display = 'inline-block';
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await populateAudioDevices();
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} else {
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deviceSelect.style.display = 'none';
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}
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// If already listening, restart stream with new source
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if (isListening) {
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stopAudioStream();
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await initAudioStream();
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}
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}
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async function populateAudioDevices() {
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const deviceSelect = document.getElementById('audio-device-select');
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deviceSelect.innerHTML = '<option value="">Gerät wählen...</option>';
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try {
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// Request permission once to get labels
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await navigator.mediaDevices.getUserMedia({ audio: true }).then(s => s.getTracks().forEach(t => t.stop())).catch(() => {});
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const devices = await navigator.mediaDevices.enumerateDevices();
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const audioInputs = devices.filter(d => d.kind === 'audioinput');
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audioInputs.forEach((d, i) => {
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const opt = document.createElement('option');
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opt.value = d.deviceId;
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opt.textContent = d.label || `Audioeingang ${i + 1}`;
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deviceSelect.appendChild(opt);
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});
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} catch (err) {
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console.warn('[Audio] Could not enumerate devices:', err);
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}
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}
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async function selectSpecificDevice(deviceId) {
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if (!deviceId) return;
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currentSource = 'device';
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if (isListening) {
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stopAudioStream();
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await initAudioStream(deviceId);
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}
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}
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// Stream Initialization
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async function initAudioStream(specificDeviceId = null) {
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try {
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stopAudioStream();
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if (currentSource === 'system') {
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updateStatus('Wähle Tab/Bildschirm mit Audio...', 'waiting');
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// System audio capture (YouTube, VLC, DJ software, browser tabs)
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const displayStream = await navigator.mediaDevices.getDisplayMedia({
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video: true,
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audio: {
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echoCancellation: false,
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noiseSuppression: false,
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autoGainControl: false,
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systemAudio: 'include'
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}
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});
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const audioTracks = displayStream.getAudioTracks();
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if (audioTracks.length === 0) {
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alert('Kein Audiotrack geteilt! Bitte setze im Teilen-Dialog das Häkchen bei "Audio teilen" (Systemaudio teilen).');
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displayStream.getTracks().forEach(t => t.stop());
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toggleListening(false);
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return false;
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}
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// Stop video track to save CPU and battery
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displayStream.getVideoTracks().forEach(t => t.stop());
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currentStream = new MediaStream(audioTracks);
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} else if (currentSource === 'device' && specificDeviceId) {
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currentStream = await navigator.mediaDevices.getUserMedia({
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audio: { deviceId: { exact: specificDeviceId } }
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});
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} else {
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// Microphone
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currentStream = await navigator.mediaDevices.getUserMedia({
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audio: {
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echoCancellation: false,
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noiseSuppression: false
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}
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});
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}
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// When the user stops sharing via the browser bar
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currentStream.getAudioTracks()[0].onended = () => {
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console.log('[Audio] Stream ended by user.');
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toggleListening(false);
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};
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// Setup Visualizer
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setupVisualizer(currentStream);
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return true;
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} catch (err) {
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console.error('[Audio] Stream init failed:', err);
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if (err.name !== 'NotAllowedError') {
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alert('Audio-Zugriff fehlgeschlagen: ' + err.message);
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}
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toggleListening(false);
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return false;
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}
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}
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function stopAudioStream() {
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if (mediaRecorder && mediaRecorder.state !== 'inactive') {
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try { mediaRecorder.stop(); } catch (e) {}
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}
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if (currentStream) {
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currentStream.getTracks().forEach(t => t.stop());
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currentStream = null;
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}
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if (animFrameId) {
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cancelAnimationFrame(animFrameId);
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animFrameId = null;
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}
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const meter = document.getElementById('audio-meter-fill');
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if (meter) meter.style.width = '0%';
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}
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// Live Visualizer (Level Meter)
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function setupVisualizer(stream) {
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try {
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if (!audioContext || audioContext.state === 'closed') {
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audioContext = new (window.AudioContext || window.webkitAudioContext)();
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}
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if (audioContext.state === 'suspended') {
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audioContext.resume();
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}
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const source = audioContext.createMediaStreamSource(stream);
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analyser = audioContext.createAnalyser();
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analyser.fftSize = 256;
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source.connect(analyser);
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const dataArray = new Uint8Array(analyser.frequencyBinCount);
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const meter = document.getElementById('audio-meter-fill');
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function updateMeter() {
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if (!isListening) {
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meter.style.width = '0%';
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return;
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}
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analyser.getByteFrequencyData(dataArray);
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let sum = 0;
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for (let i = 0; i < dataArray.length; i++) {
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sum += dataArray[i];
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}
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const avg = sum / dataArray.length;
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const pct = Math.min(100, Math.round((avg / 128) * 100));
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meter.style.width = `${pct}%`;
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animFrameId = requestAnimationFrame(updateMeter);
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}
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updateMeter();
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} catch (err) {
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console.warn('[Visualizer] Error:', err);
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}
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}
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// Listening Loop & Recognition
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async function toggleListening(forceState = null) {
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isListening = forceState !== null ? forceState : !isListening;
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const statusEl = document.getElementById('listening-status');
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const icon = statusEl.querySelector('i');
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const text = document.getElementById('listening-text');
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if (isListening) {
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statusEl.classList.remove('paused');
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statusEl.classList.add('active');
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icon.className = 'fa-solid fa-microphone-lines';
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const sourceLabel = currentSource === 'system' ? 'PC-Audio' : 'Mikrofon';
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text.textContent = `Höre ${sourceLabel}...`;
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const success = await initAudioStream();
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if (success) {
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startRecordingChunk();
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}
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} else {
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statusEl.classList.remove('active');
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statusEl.classList.add('paused');
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icon.className = 'fa-solid fa-pause';
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text.textContent = 'Pausiert';
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stopAudioStream();
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}
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}
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function startRecordingChunk() {
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if (!isListening || !currentStream) return;
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audioChunks = [];
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try {
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mediaRecorder = new MediaRecorder(currentStream, {
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mimeType: MediaRecorder.isTypeSupported('audio/webm;codecs=opus') ? 'audio/webm;codecs=opus' : undefined
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});
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mediaRecorder.ondataavailable = (e) => {
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if (e.data && e.data.size > 0) {
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audioChunks.push(e.data);
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}
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};
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mediaRecorder.onstop = async () => {
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if (!isListening) return;
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const blob = new Blob(audioChunks, { type: 'audio/webm' });
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audioChunks = [];
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// Check if sound was loud enough before querying recognition
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if (!isProcessingAudio && blob.size > 1000) {
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await processAudio(blob);
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}
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if (isListening) {
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setTimeout(startRecordingChunk, 1500); // 1.5s pause between checks
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}
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};
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// Record for 7 seconds (optimal for ACRCloud / AudD)
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mediaRecorder.start();
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setTimeout(() => {
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if (mediaRecorder && mediaRecorder.state === 'recording') {
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mediaRecorder.stop();
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}
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}, 7000);
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} catch (e) {
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console.error('[Recorder] Error:', e);
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}
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}
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async function processAudio(blob) {
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isProcessingAudio = true;
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updateStatus('Analysiere Track...', 'analyzing');
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const formData = new FormData();
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formData.append('audio', blob, 'sample.webm');
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try {
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const res = await fetch('/api/recognize', {
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method: 'POST',
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body: formData
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});
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const json = await res.json();
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if (json.status === 'success' && json.data) {
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const { title, artist, matchScore, key, bpm, cover_url, isCorrected } = json.data;
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// Avoid refetching if same track is still playing
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if (currentTrack && currentTrack.title.toLowerCase() === title.toLowerCase() && currentTrack.artist.toLowerCase() === artist.toLowerCase()) {
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updateStatus(`Laufend: ${title}`, 'active');
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isProcessingAudio = false;
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return;
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}
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updateStatus(`Erkannt: ${title}`, 'active');
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// Select track in UI and load details/suggestions
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window.selectTrack({
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title,
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artist,
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cover_url,
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camelot_key: key,
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bpm: bpm,
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is_corrected: isCorrected,
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is_local: !!key
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});
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} else if (json.status === 'not_configured') {
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updateStatus(json.message, 'warning');
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} else {
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const sourceLabel = currentSource === 'system' ? 'PC-Audio' : 'Mikrofon';
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updateStatus(`Höre ${sourceLabel}...`, 'active');
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}
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} catch (err) {
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console.error('[Audio] Recognition network error:', err);
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updateStatus('Erkennungsfehler', 'warning');
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} finally {
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isProcessingAudio = false;
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}
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}
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function updateStatus(text, type = 'normal') {
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const statusEl = document.getElementById('listening-status');
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const textEl = document.getElementById('listening-text');
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if (!textEl) return;
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textEl.textContent = text;
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statusEl.className = 'status ' + type;
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}
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// Hero View Toggles
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function toggleWheel() {
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const hero = document.getElementById('hero');
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if (hero.classList.contains('wheel-mode')) {
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resetHero();
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} else {
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hero.classList.remove('cover-mode');
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hero.classList.add('wheel-mode');
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}
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}
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function toggleCover() {
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const hero = document.getElementById('hero');
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if (hero.classList.contains('cover-mode')) {
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resetHero();
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} else {
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hero.classList.remove('wheel-mode');
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hero.classList.add('cover-mode');
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}
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}
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function resetHero() {
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document.getElementById('hero').classList.remove('wheel-mode', 'cover-mode');
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}
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// Expose globals
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window.toggleTheme = toggleTheme;
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window.changeAudioSource = changeAudioSource;
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window.selectSpecificDevice = selectSpecificDevice;
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window.toggleListening = toggleListening;
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window.toggleWheel = toggleWheel;
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window.toggleCover = toggleCover;
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window.resetHero = resetHero;
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// Initial state
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document.addEventListener('DOMContentLoaded', () => {
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window.updateWheel(null);
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}); |