Changed around line 1
+ // Audio context setup
+ const audioContext = new (window.AudioContext || window.webkitAudioContext)();
+ let isPlaying = false;
+ let currentBPM = 120;
+ let tracks = [];
+
+ // DOM elements
+ const playBtn = document.getElementById('playBtn');
+ const stopBtn = document.getElementById('stopBtn');
+ const bpmControl = document.getElementById('bpmControl');
+ const bpmValue = document.getElementById('bpmValue');
+ const tracksContainer = document.getElementById('tracksContainer');
+ const timeline = document.getElementById('timeline');
+ const masterVolume = document.getElementById('masterVolume');
+ const masterMeter = document.getElementById('masterMeter');
+ const newProjectBtn = document.getElementById('newProjectBtn');
+ const saveProjectBtn = document.getElementById('saveProjectBtn');
+ const exportBtn = document.getElementById('exportBtn');
+ const generateChordsBtn = document.getElementById('generateChordsBtn');
+ const generateMelodyBtn = document.getElementById('generateMelodyBtn');
+ const aiStyleSelect = document.getElementById('aiStyleSelect');
+
+ // Initialize
+ function init() {
+ createDefaultTracks();
+ setupEventListeners();
+ updateMeter();
+ }
+
+ function createDefaultTracks() {
+ const trackTypes = ['Drum', 'Bass', 'Piano', 'Synth', 'Vocals'];
+
+ trackTypes.forEach((type, index) => {
+ const track = {
+ id: `track-${index}`,
+ name: `${type} Track`,
+ muted: false,
+ solo: false,
+ volume: 80,
+ pan: 0,
+ clips: []
+ };
+
+ tracks.push(track);
+ renderTrack(track);
+ });
+ }
+
+ function renderTrack(track) {
+ const trackElement = document.createElement('div');
+ trackElement.className = 'track';
+ trackElement.id = track.id;
+ trackElement.innerHTML = `
+ `;
+
+ tracksContainer.appendChild(trackElement);
+ }
+
+ function setupEventListeners() {
+ playBtn.addEventListener('click', togglePlayback);
+ stopBtn.addEventListener('click', stopPlayback);
+ bpmControl.addEventListener('input', updateBPM);
+ masterVolume.addEventListener('input', updateMasterVolume);
+ newProjectBtn.addEventListener('click', newProject);
+ saveProjectBtn.addEventListener('click', saveProject);
+ exportBtn.addEventListener('click', exportAudio);
+ generateChordsBtn.addEventListener('click', generateChords);
+ generateMelodyBtn.addEventListener('click', generateMelody);
+ }
+
+ function togglePlayback() {
+ if (isPlaying) {
+ stopPlayback();
+ } else {
+ startPlayback();
+ }
+ }
+
+ function startPlayback() {
+ isPlaying = true;
+ playBtn.textContent = '❚❚';
+ // Start audio processing here
+ }
+
+ function stopPlayback() {
+ isPlaying = false;
+ playBtn.textContent = '▶';
+ // Stop audio processing here
+ }
+
+ function updateBPM() {
+ currentBPM = parseInt(bpmControl.value);
+ bpmValue.textContent = `${currentBPM} BPM`;
+ }
+
+ function updateMasterVolume() {
+ // Update master volume in audio context
+ }
+
+ function updateMeter() {
+ // Simulate meter movement
+ const level = Math.random() * 100;
+ masterMeter.style.width = `${level}%`;
+
+ // Color based on level
+ if (level > 90) {
+ masterMeter.style.backgroundColor = '#f44336';
+ } else if (level > 70) {
+ masterMeter.style.backgroundColor = '#FFC107';
+ } else {
+ masterMeter.style.backgroundColor = '#4CAF50';
+ }
+
+ requestAnimationFrame(updateMeter);
+ }
+
+ function newProject() {
+ if (confirm('Start a new project? All unsaved changes will be lost.')) {
+ tracksContainer.innerHTML = '';
+ tracks = [];
+ createDefaultTracks();
+ }
+ }
+
+ function saveProject() {
+ const projectName = prompt('Enter project name:', 'My Project');
+ if (projectName) {
+ const projectData = {
+ name: projectName,
+ bpm: currentBPM,
+ tracks: tracks
+ };
+ // In a real app, this would save to local storage or a server
+ console.log('Project saved:', projectData);
+ alert('Project saved successfully!');
+ }
+ }
+
+ function exportAudio() {
+ // In a real app, this would render the audio and provide download
+ alert('Exporting audio file...');
+ }
+
+ function generateChords() {
+ const style = aiStyleSelect.value;
+ // In a real app, this would use AI to generate chords
+ alert(`Generating ${style} chord progression...`);
+ }
+
+ function generateMelody() {
+ const style = aiStyleSelect.value;
+ // In a real app, this would use AI to generate melody
+ alert(`Generating ${style} melody...`);
+ }
+
+ // Initialize the app
+ document.addEventListener('DOMContentLoaded', init);