refactor: restructure to monorepo with npm workspaces (Phase 0)
Move frontend to packages/client/, server to packages/server/.
Root package.json uses npm workspaces to orchestrate both.
Structure:
reaktor/
packages/client/ (React + Vite + Tone.js frontend)
packages/server/ (static file server, future API)
dist/ (built output, shared)
docker-compose.yml (app + PostgreSQL for future backend)
- npm run dev → runs Vite dev server from client workspace
- npm run build → builds client, outputs to root dist/
- npm run start → runs server.js serving dist/
- Dockerfile updated for multi-stage monorepo build
- docker-compose.yml added with PostgreSQL service (ready for Phase 1)
- All imports and paths preserved, zero functionality change
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Jose Luis
609
packages/client/src/engine/audioEngine.js
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609
packages/client/src/engine/audioEngine.js
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@@ -0,0 +1,609 @@
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/**
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* audioEngine.js — Bridge between node graph state and Tone.js audio graph
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* Creates, connects, and destroys Tone.js nodes as the user edits the patch
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*/
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import * as Tone from 'tone';
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import { state } from './state.js';
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import { getModuleDef } from './moduleRegistry.js';
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// Map moduleId → { node: Tone.js node, inputs: {portName: node/param}, outputs: {portName: node} }
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const audioNodes = {};
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// Active keyboard state
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const keyboardState = { frequency: 440, gate: false };
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// ==================== Global Master Clock ====================
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// Single clock with integer tick counter. All sequencers/piano rolls
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// derive their step positions from this shared tick count.
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// Using integers avoids floating-point drift entirely.
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export const MASTER_TICK_RATE = 120; // Hz — 6x headroom for 300 BPM sixteenths (20 Hz). Lower = less main thread pressure.
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let _masterClock = null;
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const _tickListeners = new Map(); // id → callback(audioTime, ticks)
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export function subscribeTick(id, callback) {
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_tickListeners.set(id, callback);
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}
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export function unsubscribeTick(id) {
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_tickListeners.delete(id);
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}
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function startMasterClock() {
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if (_masterClock) return;
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let _startTime = 0;
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let _started = false;
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_masterClock = new Tone.Clock((time) => {
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if (!_started) { _startTime = time; _started = true; }
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// Derive ticks from precise AudioContext.currentTime, not a counter.
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// Counters fall behind when callbacks are delayed (GC, UI, tab throttle).
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// The time parameter is always accurate regardless of callback jitter.
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const ticks = Math.round((time - _startTime) * MASTER_TICK_RATE);
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for (const cb of _tickListeners.values()) {
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cb(time, ticks);
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}
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}, MASTER_TICK_RATE);
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_masterClock.start();
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}
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function stopMasterClock() {
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if (_masterClock) {
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try { _masterClock.stop(); } catch {}
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try { _masterClock.dispose(); } catch {}
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_masterClock = null;
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}
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_tickListeners.clear();
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}
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// ==================== Node creation ====================
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function createNode(mod) {
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const def = getModuleDef(mod.type);
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if (!def) return null;
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const p = { ...Object.fromEntries(Object.entries(def.params).map(([k, v]) => [k, v.default])), ...mod.params };
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switch (mod.type) {
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case 'oscillator': {
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const osc = new Tone.Oscillator({ type: p.waveform, frequency: p.frequency, detune: p.detune });
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osc.start();
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// Modulation scaler for freq input: LFO (-1..1) × scale → added to osc.frequency
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// Scale = half the current frequency so modulation is musically meaningful
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const freqMod = new Tone.Gain(p.frequency * 0.5);
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freqMod.connect(osc.frequency);
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return {
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node: osc,
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_freqMod: freqMod,
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inputs: { freq: freqMod, detune: osc.detune },
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outputs: { out: osc },
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dispose: () => { osc.stop(); freqMod.disconnect(); freqMod.dispose(); osc.dispose(); },
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};
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}
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case 'lfo': {
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const lfo = new Tone.LFO({ type: p.waveform, frequency: p.frequency, amplitude: p.amplitude, min: -1, max: 1 });
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lfo.start();
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return {
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node: lfo,
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inputs: {},
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outputs: { out: lfo },
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dispose: () => { lfo.stop(); lfo.dispose(); },
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};
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}
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case 'noise': {
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const noise = new Tone.Noise(p.type);
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noise.start();
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return {
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node: noise,
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inputs: {},
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outputs: { out: noise },
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dispose: () => { noise.stop(); noise.dispose(); },
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};
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}
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case 'filter': {
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const filter = new Tone.Filter({ type: p.type, frequency: p.frequency, Q: p.Q });
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// Modulation scaler for cutoff input: LFO (-1..1) × scale → added to filter.frequency
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// Scale = cutoff value so full LFO sweep covers 0 to 2× the cutoff
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const cutoffMod = new Tone.Gain(p.frequency);
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cutoffMod.connect(filter.frequency);
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return {
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node: filter,
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_cutoffMod: cutoffMod,
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inputs: { in: filter, cutoff: cutoffMod },
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outputs: { out: filter },
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dispose: () => { cutoffMod.disconnect(); cutoffMod.dispose(); filter.dispose(); },
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};
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}
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case 'envelope': {
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const env = new Tone.Envelope({ attack: p.attack, decay: p.decay, sustain: p.sustain, release: p.release });
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// Connect env to a signal so it can be used as modulation source
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const sig = new Tone.Signal(0);
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env.connect(sig);
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return {
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node: env,
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_sig: sig,
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inputs: { gate: null }, // Gate is handled via triggerAttack/Release
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outputs: { out: sig },
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dispose: () => { env.dispose(); sig.dispose(); },
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};
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}
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case 'vca': {
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const gain = new Tone.Gain(p.gain);
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// CV scaler: always gain=1 so envelope (0-1) passes through fully.
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// When CV is connected, base gain is zeroed — envelope controls amplitude entirely.
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const cvMod = new Tone.Gain(1);
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cvMod.connect(gain.gain);
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return {
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node: gain,
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_cvMod: cvMod,
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inputs: { in: gain, cv: cvMod },
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outputs: { out: gain },
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dispose: () => { cvMod.disconnect(); cvMod.dispose(); gain.dispose(); },
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};
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}
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case 'delay': {
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const delay = new Tone.FeedbackDelay({ delayTime: p.delayTime, feedback: p.feedback, wet: p.wet });
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return {
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node: delay,
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inputs: { in: delay },
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outputs: { out: delay },
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dispose: () => delay.dispose(),
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};
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}
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case 'reverb': {
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const reverb = new Tone.Reverb({ decay: p.decay, wet: p.wet });
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return {
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node: reverb,
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inputs: { in: reverb },
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outputs: { out: reverb },
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dispose: () => reverb.dispose(),
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};
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}
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case 'distortion': {
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const dist = new Tone.Distortion({ distortion: p.distortion, wet: p.wet });
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return {
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node: dist,
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inputs: { in: dist },
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outputs: { out: dist },
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dispose: () => dist.dispose(),
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};
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}
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case 'mixer': {
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const master = new Tone.Gain(1);
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const ch1 = new Tone.Gain(p.gain1);
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const ch2 = new Tone.Gain(p.gain2);
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const ch3 = new Tone.Gain(p.gain3);
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const ch4 = new Tone.Gain(p.gain4);
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ch1.connect(master); ch2.connect(master); ch3.connect(master); ch4.connect(master);
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return {
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node: master,
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_channels: [ch1, ch2, ch3, ch4],
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inputs: { in1: ch1, in2: ch2, in3: ch3, in4: ch4 },
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outputs: { out: master },
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dispose: () => { [ch1, ch2, ch3, ch4, master].forEach(n => n.dispose()); },
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};
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}
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case 'scope': {
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const analyser = new Tone.Analyser('waveform', 2048);
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return {
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node: analyser,
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inputs: { in: analyser },
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outputs: {},
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analyser,
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dispose: () => analyser.dispose(),
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};
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}
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case 'cv2gate': {
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// Converts a continuous CV signal to gate on/off based on threshold.
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// Uses an analyser to read the CV value and triggers connected envelopes.
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const analyser = new Tone.Analyser('waveform', 32);
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const gateSig = new Tone.Signal(0);
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return {
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node: analyser,
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_gateSig: gateSig,
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_gateState: false,
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inputs: { in: analyser },
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outputs: { gate: gateSig },
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dispose: () => { analyser.dispose(); gateSig.dispose(); },
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};
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}
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case 'output': {
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// True stereo output: separate left/right channels → merge → master gain → destination
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const leftGain = new Tone.Gain(1);
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const rightGain = new Tone.Gain(1);
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const merge = new Tone.Merge();
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const master = new Tone.Gain(Tone.dbToGain(p.volume));
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leftGain.connect(merge, 0, 0);
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rightGain.connect(merge, 0, 1);
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merge.connect(master);
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master.toDestination();
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return {
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node: master,
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_merge: merge,
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_leftGain: leftGain,
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_rightGain: rightGain,
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inputs: { left: leftGain, right: rightGain },
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outputs: {},
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dispose: () => {
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leftGain.disconnect(); leftGain.dispose();
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rightGain.disconnect(); rightGain.dispose();
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merge.disconnect(); merge.dispose();
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master.disconnect(); master.dispose();
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},
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};
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}
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case 'keyboard':
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case 'drumpad': {
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const freqSig = new Tone.Signal(440);
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const gateSig = new Tone.Signal(0);
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return {
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node: null,
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inputs: {},
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outputs: { freq: freqSig, gate: gateSig },
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_freqSig: freqSig,
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_gateSig: gateSig,
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dispose: () => { freqSig.dispose(); gateSig.dispose(); },
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};
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}
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case 'sequencer': {
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const freqSig = new Tone.Signal(440);
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const gateSig = new Tone.Signal(0);
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// Sequencer loop managed externally by SequencerWidget
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return {
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node: null,
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inputs: {},
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outputs: { freq: freqSig, gate: gateSig },
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_freqSig: freqSig,
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_gateSig: gateSig,
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_seq: null, // Tone.Sequence set by widget
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dispose: () => {
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freqSig.dispose(); gateSig.dispose();
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},
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};
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}
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case 'pianoroll': {
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const freqSig = new Tone.Signal(440);
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const gateSig = new Tone.Signal(0);
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return {
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node: null,
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inputs: {},
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outputs: { freq: freqSig, gate: gateSig },
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_freqSig: freqSig,
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_gateSig: gateSig,
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_part: null, // Tone.Part set by widget
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dispose: () => {
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freqSig.dispose(); gateSig.dispose();
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},
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};
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}
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default:
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return null;
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}
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}
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// ==================== Public API ====================
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export function ensureNode(moduleId) {
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if (audioNodes[moduleId]) return audioNodes[moduleId];
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const mod = state.modules.find(m => m.id === moduleId);
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if (!mod) return null;
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const node = createNode(mod);
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if (node) audioNodes[moduleId] = node;
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return node;
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}
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export function getAudioNode(moduleId) {
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return audioNodes[moduleId] || null;
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}
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export function destroyNode(moduleId) {
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const entry = audioNodes[moduleId];
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if (!entry) return;
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try { entry.dispose(); } catch (e) { console.warn('dispose error', e); }
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delete audioNodes[moduleId];
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}
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export function connectWire(conn) {
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const fromEntry = ensureNode(conn.from.moduleId);
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const toEntry = ensureNode(conn.to.moduleId);
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if (!fromEntry || !toEntry) return;
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// Skip audio-graph connection for keyboard/sequencer/pianoroll freq → oscillator freq.
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// These signals carry absolute Hz values that would be mangled by the oscillator's
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// frequency-modulation Gain scaler. Instead, triggerKeyboard / setSequencerSignals
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// set the oscillator frequency directly when notes are played.
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const fromMod = state.modules.find(m => m.id === conn.from.moduleId);
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const toMod = state.modules.find(m => m.id === conn.to.moduleId);
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if (fromMod && ['keyboard', 'drumpad', 'sequencer', 'pianoroll'].includes(fromMod.type) &&
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conn.from.port === 'freq' && toMod?.type === 'oscillator' && conn.to.port === 'freq') {
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return; // handled imperatively in triggerKeyboard / setSequencerSignals
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}
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const output = fromEntry.outputs[conn.from.port];
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const input = toEntry.inputs[conn.to.port];
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if (!output || input === undefined || input === null) return;
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try {
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if (typeof output.connect === 'function') {
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output.connect(input);
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}
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} catch (e) {
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console.warn('connect error', e);
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}
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// When CV is connected to VCA, zero the base gain so only envelope controls it
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if (toMod?.type === 'vca' && conn.to.port === 'cv') {
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toEntry.node.gain.value = 0;
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}
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}
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export function disconnectWire(conn) {
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const fromEntry = audioNodes[conn.from.moduleId];
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const toEntry = audioNodes[conn.to.moduleId];
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if (!fromEntry || !toEntry) return;
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const output = fromEntry.outputs[conn.from.port];
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const input = toEntry.inputs[conn.to.port];
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if (!output || !input) return;
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try {
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if (typeof output.disconnect === 'function') {
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output.disconnect(input);
|
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}
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} catch (e) {
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// Tone.js may throw if not connected
|
||||
}
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// When CV is disconnected from VCA, restore base gain from params
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const toMod = state.modules.find(m => m.id === conn.to.moduleId);
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if (toMod?.type === 'vca' && conn.to.port === 'cv') {
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toEntry.node.gain.value = toMod.params?.gain ?? 0.8;
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}
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}
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export function updateParam(moduleId, paramName, value) {
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const entry = audioNodes[moduleId];
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const mod = state.modules.find(m => m.id === moduleId);
|
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if (!entry || !mod) return;
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||||
const def = getModuleDef(mod.type);
|
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if (!def) return;
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||||
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||||
switch (mod.type) {
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case 'oscillator':
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||||
if (paramName === 'waveform') entry.node.type = value;
|
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else if (paramName === 'frequency') {
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||||
entry.node.frequency.value = value;
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// Update mod scaler proportionally
|
||||
if (entry._freqMod) entry._freqMod.gain.value = value * 0.5;
|
||||
}
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else if (paramName === 'detune') entry.node.detune.value = value;
|
||||
break;
|
||||
case 'lfo':
|
||||
if (paramName === 'waveform') entry.node.type = value;
|
||||
else if (paramName === 'frequency') entry.node.frequency.value = value;
|
||||
else if (paramName === 'amplitude') entry.node.amplitude.value = value;
|
||||
break;
|
||||
case 'noise':
|
||||
if (paramName === 'type') entry.node.type = value;
|
||||
break;
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||||
case 'filter':
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||||
if (paramName === 'type') entry.node.type = value;
|
||||
else if (paramName === 'frequency') {
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||||
entry.node.frequency.value = value;
|
||||
// Update mod scaler proportionally
|
||||
if (entry._cutoffMod) entry._cutoffMod.gain.value = value;
|
||||
}
|
||||
else if (paramName === 'Q') entry.node.Q.value = value;
|
||||
break;
|
||||
case 'envelope':
|
||||
if (paramName === 'attack') entry.node.attack = value;
|
||||
else if (paramName === 'decay') entry.node.decay = value;
|
||||
else if (paramName === 'sustain') entry.node.sustain = value;
|
||||
else if (paramName === 'release') entry.node.release = value;
|
||||
break;
|
||||
case 'vca':
|
||||
if (paramName === 'gain') {
|
||||
// Only update base gain if no CV is connected (CV zeroes it)
|
||||
const hasCV = state.connections.some(c => c.to.moduleId === moduleId && c.to.port === 'cv');
|
||||
if (!hasCV) entry.node.gain.value = value;
|
||||
// cvMod stays at 1 always — envelope controls full range
|
||||
}
|
||||
break;
|
||||
case 'delay':
|
||||
if (paramName === 'delayTime') entry.node.delayTime.value = value;
|
||||
else if (paramName === 'feedback') entry.node.feedback.value = value;
|
||||
else if (paramName === 'wet') entry.node.wet.value = value;
|
||||
break;
|
||||
case 'reverb':
|
||||
if (paramName === 'decay') entry.node.decay = value;
|
||||
else if (paramName === 'wet') entry.node.wet.value = value;
|
||||
break;
|
||||
case 'distortion':
|
||||
if (paramName === 'distortion') entry.node.distortion = value;
|
||||
else if (paramName === 'wet') entry.node.wet.value = value;
|
||||
break;
|
||||
case 'mixer':
|
||||
if (paramName.startsWith('gain')) {
|
||||
const idx = parseInt(paramName.replace('gain', '')) - 1;
|
||||
if (entry._channels && entry._channels[idx]) entry._channels[idx].gain.value = value;
|
||||
}
|
||||
break;
|
||||
case 'output':
|
||||
if (paramName === 'volume') entry.node.gain.value = Tone.dbToGain(value);
|
||||
break;
|
||||
case 'keyboard':
|
||||
case 'drumpad':
|
||||
case 'cv2gate':
|
||||
case 'sequencer':
|
||||
case 'pianoroll':
|
||||
// All params stored in state, managed by widgets
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// Cache connection lookups for hot-path audio scheduling
|
||||
// Rebuilt only when connections actually change (dirty flag, no computation on hit)
|
||||
let _connCacheDirty = true;
|
||||
const _connByModulePort = new Map(); // "moduleId-portName" → [connections]
|
||||
|
||||
export function invalidateConnectionCache() {
|
||||
_connCacheDirty = true;
|
||||
}
|
||||
|
||||
function getConnectionsFrom(moduleId, portName) {
|
||||
if (_connCacheDirty) {
|
||||
_connByModulePort.clear();
|
||||
for (const conn of state.connections) {
|
||||
const key = `${conn.from.moduleId}-${conn.from.port}`;
|
||||
if (!_connByModulePort.has(key)) _connByModulePort.set(key, []);
|
||||
_connByModulePort.get(key).push(conn);
|
||||
}
|
||||
_connCacheDirty = false;
|
||||
}
|
||||
return _connByModulePort.get(`${moduleId}-${portName}`) || [];
|
||||
}
|
||||
|
||||
export function setSequencerSignals(moduleId, freq, gate) {
|
||||
const entry = audioNodes[moduleId];
|
||||
if (!entry) return;
|
||||
if (entry._freqSig) entry._freqSig.value = freq;
|
||||
if (entry._gateSig) entry._gateSig.value = gate ? 1 : 0;
|
||||
|
||||
// Set connected oscillator frequencies directly
|
||||
for (const conn of getConnectionsFrom(moduleId, 'freq')) {
|
||||
const oscEntry = audioNodes[conn.to.moduleId];
|
||||
if (oscEntry?.node?.frequency) {
|
||||
oscEntry.node.frequency.value = freq;
|
||||
}
|
||||
}
|
||||
|
||||
// Trigger connected envelopes
|
||||
for (const conn of getConnectionsFrom(moduleId, 'gate')) {
|
||||
const envEntry = audioNodes[conn.to.moduleId];
|
||||
if (envEntry && envEntry.node instanceof Tone.Envelope) {
|
||||
if (gate) envEntry.node.triggerAttack();
|
||||
else envEntry.node.triggerRelease();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export function triggerKeyboard(moduleId, freq, gate) {
|
||||
const entry = audioNodes[moduleId];
|
||||
if (!entry) return;
|
||||
if (entry._freqSig) entry._freqSig.value = freq;
|
||||
if (entry._gateSig) entry._gateSig.value = gate ? 1 : 0;
|
||||
|
||||
// Set connected oscillator frequencies directly
|
||||
for (const conn of getConnectionsFrom(moduleId, 'freq')) {
|
||||
const oscEntry = audioNodes[conn.to.moduleId];
|
||||
if (oscEntry?.node?.frequency) {
|
||||
oscEntry.node.frequency.value = freq;
|
||||
}
|
||||
}
|
||||
|
||||
// Trigger connected envelopes
|
||||
for (const conn of getConnectionsFrom(moduleId, 'gate')) {
|
||||
const envEntry = audioNodes[conn.to.moduleId];
|
||||
if (envEntry && envEntry.node instanceof Tone.Envelope) {
|
||||
if (gate) envEntry.node.triggerAttack();
|
||||
else envEntry.node.triggerRelease();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export async function startAudio() {
|
||||
await Tone.start();
|
||||
state.isRunning = true;
|
||||
startMasterClock();
|
||||
|
||||
// Rebuild entire audio graph
|
||||
rebuildGraph();
|
||||
}
|
||||
|
||||
export function stopAudio() {
|
||||
stopMasterClock();
|
||||
|
||||
// Stop and reset Transport
|
||||
try {
|
||||
Tone.getTransport().stop();
|
||||
Tone.getTransport().cancel();
|
||||
Tone.getTransport().position = 0;
|
||||
} catch (e) {}
|
||||
|
||||
// Destroy all nodes
|
||||
for (const id of Object.keys(audioNodes)) {
|
||||
destroyNode(parseInt(id));
|
||||
}
|
||||
state.isRunning = false;
|
||||
}
|
||||
|
||||
export function rebuildGraph() {
|
||||
// Destroy all existing nodes
|
||||
for (const id of Object.keys(audioNodes)) {
|
||||
destroyNode(parseInt(id));
|
||||
}
|
||||
|
||||
// Create nodes for all modules
|
||||
for (const mod of state.modules) {
|
||||
ensureNode(mod.id);
|
||||
}
|
||||
|
||||
// Create all connections
|
||||
for (const conn of state.connections) {
|
||||
connectWire(conn);
|
||||
}
|
||||
|
||||
// Zero base gain on VCAs with active CV connection.
|
||||
// When envelope controls VCA, base gain must be 0 so silence is possible.
|
||||
for (const mod of state.modules) {
|
||||
if (mod.type !== 'vca') continue;
|
||||
const hasCV = state.connections.some(c => c.to.moduleId === mod.id && c.to.port === 'cv');
|
||||
const entry = audioNodes[mod.id];
|
||||
if (entry && hasCV) entry.node.gain.value = 0;
|
||||
}
|
||||
|
||||
// Auto-trigger envelopes that have no gate connection (free-running mode).
|
||||
// This allows noise/ambient patches to work without a keyboard/sequencer.
|
||||
for (const mod of state.modules) {
|
||||
if (mod.type !== 'envelope') continue;
|
||||
const hasGateInput = state.connections.some(
|
||||
c => c.to.moduleId === mod.id && c.to.port === 'gate'
|
||||
);
|
||||
if (!hasGateInput) {
|
||||
const entry = audioNodes[mod.id];
|
||||
if (entry && entry.node && typeof entry.node.triggerAttack === 'function') {
|
||||
entry.node.triggerAttack();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Register CV→Gate modules on master clock for threshold detection
|
||||
for (const mod of state.modules) {
|
||||
if (mod.type !== 'cv2gate') continue;
|
||||
const entry = audioNodes[mod.id];
|
||||
if (!entry) continue;
|
||||
subscribeTick(`cv2gate-${mod.id}`, () => {
|
||||
const data = entry.node.getValue();
|
||||
const sample = typeof data === 'number' ? data : (data?.[0] ?? 0);
|
||||
const threshold = mod.params?.threshold ?? 0.5;
|
||||
const gateOn = sample > threshold;
|
||||
if (gateOn !== entry._gateState) {
|
||||
entry._gateState = gateOn;
|
||||
entry._gateSig.value = gateOn ? 1 : 0;
|
||||
// Trigger/release connected envelopes
|
||||
for (const conn of getConnectionsFrom(mod.id, 'gate')) {
|
||||
const envEntry = audioNodes[conn.to.moduleId];
|
||||
if (envEntry && envEntry.node instanceof Tone.Envelope) {
|
||||
if (gateOn) envEntry.node.triggerAttack();
|
||||
else envEntry.node.triggerRelease();
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
export function getAnalyserData(moduleId) {
|
||||
const entry = audioNodes[moduleId];
|
||||
if (!entry || !entry.analyser) return null;
|
||||
return entry.analyser.getValue();
|
||||
}
|
||||
Reference in New Issue
Block a user