mirror of
https://github.com/eliasstepanik/strudel-docker.git
synced 2026-01-11 05:38:34 +00:00
encapsulate out
+ encapsulate destination + error handling to simplify merge scheduler branch
This commit is contained in:
Felix Roos
parent
82cb6c93cf
commit
6dbb2cb98a
@ -22,6 +22,21 @@ export const getAudioContext = () => {
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return audioContext;
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};
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let destination;
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export const getDestination = () => {
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const ctx = getAudioContext();
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if (!destination) {
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destination = ctx.createGain();
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destination.connect(ctx.destination);
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}
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return destination;
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};
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export const panic = () => {
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getDestination().gain.linearRampToValueAtTime(0, getAudioContext().currentTime + 0.01);
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destination = null;
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};
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const getFilter = (type, frequency, Q) => {
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const filter = getAudioContext().createBiquadFilter();
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filter.type = type;
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@ -87,7 +102,7 @@ const getSampleBufferSource = async (s, n, note) => {
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}
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const bank = samples?.[s];
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if (!bank) {
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throw new Error('sample not found:', s, 'try one of ' + Object.keys(samples));
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throw new Error(`sample not found: "${s}", try one of ${Object.keys(samples).join(', ')}`);
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}
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if (typeof bank !== 'object') {
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throw new Error('wrong format for sample bank:', s);
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@ -155,170 +170,174 @@ try {
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const cutGroups = [];
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Pattern.prototype.out = function () {
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return this.onTrigger(async (t, hap, ct, cps) => {
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const hapDuration = hap.duration / cps;
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try {
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const ac = getAudioContext();
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// calculate correct time (tone.js workaround)
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t = ac.currentTime + t - ct;
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// destructure value
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let {
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freq,
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s,
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sf,
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clip = 0, // if 1, samples will be cut off when the hap ends
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n = 0,
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note,
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gain = 1,
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cutoff,
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resonance = 1,
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hcutoff,
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hresonance = 1,
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bandf,
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bandq = 1,
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coarse,
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crush,
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shape,
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pan,
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attack = 0.001,
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decay = 0.001,
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sustain = 1,
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release = 0.001,
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speed = 1, // sample playback speed
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begin = 0,
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end = 1,
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vowel,
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unit,
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nudge = 0, // TODO: is this in seconds?
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cut,
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loop,
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} = hap.value;
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const { velocity = 1 } = hap.context;
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gain *= velocity; // legacy fix for velocity
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// the chain will hold all audio nodes that connect to each other
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const chain = [];
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if (typeof s === 'string') {
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[s, n] = splitSN(s, n);
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}
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if (typeof note === 'string') {
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[note, n] = splitSN(note, n);
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}
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if (!s || ['sine', 'square', 'triangle', 'sawtooth'].includes(s)) {
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// with synths, n and note are the same thing
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n = note || n || 36;
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if (typeof n === 'string') {
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n = toMidi(n); // e.g. c3 => 48
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}
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// get frequency
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if (!freq && typeof n === 'number') {
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freq = fromMidi(n); // + 48);
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}
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// make oscillator
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const o = getOscillator({ t, s, freq, duration: hapDuration, release });
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chain.push(o);
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// level down oscillators as they are really loud compared to samples i've tested
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const g = ac.createGain();
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g.gain.value = 0.3;
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chain.push(g);
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// TODO: make adsr work with samples without pops
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// envelope
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const adsr = getADSR(attack, decay, sustain, release, 1, t, t + hapDuration);
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chain.push(adsr);
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} else {
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// load sample
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if (speed === 0) {
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// no playback
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return;
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}
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if (!s) {
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console.warn('no sample specified');
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return;
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}
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const soundfont = getSoundfontKey(s);
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let bufferSource;
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try {
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if (soundfont) {
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// is soundfont
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bufferSource = await globalThis.getFontBufferSource(soundfont, note || n, ac);
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} else {
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// is sample from loaded samples(..)
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bufferSource = await getSampleBufferSource(s, n, note);
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}
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} catch (err) {
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console.warn(err);
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return;
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}
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// asny stuff above took too long?
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if (ac.currentTime > t) {
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console.warn('sample still loading:', s, n);
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return;
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}
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if (!bufferSource) {
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console.warn('no buffer source');
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return;
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}
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bufferSource.playbackRate.value = Math.abs(speed) * bufferSource.playbackRate.value;
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if (unit === 'c') {
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// are there other units?
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bufferSource.playbackRate.value = bufferSource.playbackRate.value * bufferSource.buffer.duration;
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}
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let duration = soundfont || clip ? hapDuration : bufferSource.buffer.duration / bufferSource.playbackRate.value;
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// "The computation of the offset into the sound is performed using the sound buffer's natural sample rate,
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// rather than the current playback rate, so even if the sound is playing at twice its normal speed,
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// the midway point through a 10-second audio buffer is still 5."
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const offset = begin * duration * bufferSource.playbackRate.value;
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duration = (end - begin) * duration;
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if (loop) {
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bufferSource.loop = true;
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bufferSource.loopStart = offset;
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bufferSource.loopEnd = offset + duration;
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duration = loop * duration;
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}
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t += nudge;
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bufferSource.start(t, offset);
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if (cut !== undefined) {
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cutGroups[cut]?.stop(t); // fade out?
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cutGroups[cut] = bufferSource;
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}
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chain.push(bufferSource);
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bufferSource.stop(t + duration + release);
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const adsr = getADSR(attack, decay, sustain, release, 1, t, t + duration);
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chain.push(adsr);
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}
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// master out
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const master = ac.createGain();
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master.gain.value = gain;
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chain.push(master);
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// filters
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cutoff !== undefined && chain.push(getFilter('lowpass', cutoff, resonance));
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hcutoff !== undefined && chain.push(getFilter('highpass', hcutoff, hresonance));
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bandf !== undefined && chain.push(getFilter('bandpass', bandf, bandq));
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vowel !== undefined && chain.push(ac.createVowelFilter(vowel));
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coarse !== undefined && chain.push(getWorklet(ac, 'coarse-processor', { coarse }));
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crush !== undefined && chain.push(getWorklet(ac, 'crush-processor', { crush }));
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shape !== undefined && chain.push(getWorklet(ac, 'shape-processor', { shape }));
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// TODO delay / delaytime / delayfeedback
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// panning
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if (pan !== undefined) {
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const panner = ac.createStereoPanner();
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panner.pan.value = 2 * pan - 1;
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chain.push(panner);
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}
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// master out
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/* const master = ac.createGain();
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master.gain.value = 0.8 * gain;
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chain.push(master); */
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chain.push(ac.destination);
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// connect chain elements together
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chain.slice(1).reduce((last, current) => last.connect(current), chain[0]);
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// disconnect all nodes when source node has ended:
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chain[0].onended = () => chain.forEach((n) => n.disconnect());
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} catch (e) {
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console.warn('.out error:', e);
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// export const webaudioOutput = async (t, hap, ct, cps) => {
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export const webaudioOutput = async (hap, deadline, hapDuration) => {
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try {
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const ac = getAudioContext();
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if (typeof hap.value !== 'object') {
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throw new Error(
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`hap.value ${hap.value} is not supported by webaudio output. Hint: append .note() or .s() to the end`,
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);
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}
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});
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// calculate correct time (tone.js workaround)
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let t = ac.currentTime + deadline;
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// destructure value
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let {
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freq,
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s,
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sf,
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clip = 0, // if 1, samples will be cut off when the hap ends
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n = 0,
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note,
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gain = 1,
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cutoff,
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resonance = 1,
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hcutoff,
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hresonance = 1,
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bandf,
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bandq = 1,
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coarse,
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crush,
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shape,
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pan,
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attack = 0.001,
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decay = 0.001,
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sustain = 1,
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release = 0.001,
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speed = 1, // sample playback speed
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begin = 0,
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end = 1,
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vowel,
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unit,
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nudge = 0, // TODO: is this in seconds?
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cut,
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loop,
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} = hap.value;
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const { velocity = 1 } = hap.context;
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gain *= velocity; // legacy fix for velocity
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// the chain will hold all audio nodes that connect to each other
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const chain = [];
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if (typeof s === 'string') {
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[s, n] = splitSN(s, n);
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}
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if (typeof note === 'string') {
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[note, n] = splitSN(note, n);
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}
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if (!s || ['sine', 'square', 'triangle', 'sawtooth'].includes(s)) {
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// with synths, n and note are the same thing
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n = note || n || 36;
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if (typeof n === 'string') {
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n = toMidi(n); // e.g. c3 => 48
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}
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// get frequency
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if (!freq && typeof n === 'number') {
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freq = fromMidi(n); // + 48);
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}
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// make oscillator
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const o = getOscillator({ t, s, freq, duration: hapDuration, release });
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chain.push(o);
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// level down oscillators as they are really loud compared to samples i've tested
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const g = ac.createGain();
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g.gain.value = 0.3;
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chain.push(g);
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// TODO: make adsr work with samples without pops
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// envelope
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const adsr = getADSR(attack, decay, sustain, release, 1, t, t + hapDuration);
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chain.push(adsr);
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} else {
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// load sample
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if (speed === 0) {
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// no playback
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return;
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}
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if (!s) {
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console.warn('no sample specified');
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return;
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}
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const soundfont = getSoundfontKey(s);
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let bufferSource;
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try {
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if (soundfont) {
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// is soundfont
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bufferSource = await globalThis.getFontBufferSource(soundfont, note || n, ac);
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} else {
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// is sample from loaded samples(..)
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bufferSource = await getSampleBufferSource(s, n, note);
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}
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} catch (err) {
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console.warn(err);
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return;
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}
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// asny stuff above took too long?
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if (ac.currentTime > t) {
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console.warn('sample still loading:', s, n);
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return;
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}
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if (!bufferSource) {
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console.warn('no buffer source');
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return;
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}
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bufferSource.playbackRate.value = Math.abs(speed) * bufferSource.playbackRate.value;
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if (unit === 'c') {
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// are there other units?
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bufferSource.playbackRate.value = bufferSource.playbackRate.value * bufferSource.buffer.duration;
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}
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let duration = soundfont || clip ? hapDuration : bufferSource.buffer.duration / bufferSource.playbackRate.value;
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// "The computation of the offset into the sound is performed using the sound buffer's natural sample rate,
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// rather than the current playback rate, so even if the sound is playing at twice its normal speed,
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// the midway point through a 10-second audio buffer is still 5."
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const offset = begin * duration * bufferSource.playbackRate.value;
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duration = (end - begin) * duration;
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if (loop) {
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bufferSource.loop = true;
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bufferSource.loopStart = offset;
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bufferSource.loopEnd = offset + duration;
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duration = loop * duration;
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}
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t += nudge;
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bufferSource.start(t, offset);
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if (cut !== undefined) {
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cutGroups[cut]?.stop(t); // fade out?
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cutGroups[cut] = bufferSource;
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}
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chain.push(bufferSource);
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bufferSource.stop(t + duration + release);
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const adsr = getADSR(attack, decay, sustain, release, 1, t, t + duration);
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chain.push(adsr);
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}
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// master out
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const master = ac.createGain();
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master.gain.value = gain;
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chain.push(master);
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// filters
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cutoff !== undefined && chain.push(getFilter('lowpass', cutoff, resonance));
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hcutoff !== undefined && chain.push(getFilter('highpass', hcutoff, hresonance));
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bandf !== undefined && chain.push(getFilter('bandpass', bandf, bandq));
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vowel !== undefined && chain.push(ac.createVowelFilter(vowel));
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coarse !== undefined && chain.push(getWorklet(ac, 'coarse-processor', { coarse }));
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crush !== undefined && chain.push(getWorklet(ac, 'crush-processor', { crush }));
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shape !== undefined && chain.push(getWorklet(ac, 'shape-processor', { shape }));
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// TODO delay / delaytime / delayfeedback
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// panning
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if (pan !== undefined) {
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const panner = ac.createStereoPanner();
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panner.pan.value = 2 * pan - 1;
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chain.push(panner);
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}
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// connect chain elements together
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chain.slice(1).reduce((last, current) => last.connect(current), chain[0]);
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chain[chain.length - 1].connect(getDestination());
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// disconnect all nodes when source node has ended:
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chain[0].onended = () => chain.forEach((n) => n.disconnect());
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} catch (e) {
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console.warn('.out error:', e);
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}
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};
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Pattern.prototype.out = function () {
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// TODO: refactor (t, hap, ct, cps) to (hap, deadline, duration) ?
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return this.onTrigger((t, hap, ct, cps) => webaudioOutput(hap, t - ct, hap.duration / cps));
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};
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