This commit is contained in:
Jade (Rose) Rowland 2024-04-21 17:29:29 -04:00
parent e0c4997f1e
commit 5d8eea7299
5 changed files with 137 additions and 123 deletions

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@ -61,6 +61,11 @@ export const valueToMidi = (value, fallbackValue) => {
return fallbackValue;
};
// used to schedule external event like midi and osc out
export const getEventOffsetMs = (targetTime, currentTime) => {
return (targetTime - currentTime) * 1000;
};
/**
* @deprecated does not appear to be referenced or invoked anywhere in the codebase
* @noAutocomplete

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@ -1,8 +1,8 @@
import { parseNumeral, Pattern } from '@strudel/core';
import { parseNumeral, Pattern, getEventOffsetMs } from '@strudel/core';
import { Invoke } from './utils.mjs';
Pattern.prototype.osc = function () {
return this.onTrigger(async (time, hap, currentTime, cps = 1) => {
return this.onTrigger(async (time, hap, currentTime, cps = 1, targetTime) => {
hap.ensureObjectValue();
const cycle = hap.wholeOrPart().begin.valueOf();
const delta = hap.duration.valueOf();
@ -13,7 +13,7 @@ Pattern.prototype.osc = function () {
const params = [];
const timestamp = Math.round(Date.now() + (time - currentTime) * 1000);
const timestamp = Math.round(Date.now() + getEventOffsetMs(targetTime, currentTime));
Object.keys(controls).forEach((key) => {
const val = controls[key];

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@ -5,7 +5,7 @@ This program is free software: you can redistribute it and/or modify it under th
*/
import * as _WebMidi from 'webmidi';
import { Pattern, isPattern, logger, ref } from '@strudel/core';
import { Pattern, getEventOffsetMs, isPattern, logger, ref } from '@strudel/core';
import { noteToMidi } from '@strudel/core';
import { Note } from 'webmidi';
// if you use WebMidi from outside of this package, make sure to import that instance:
@ -120,9 +120,9 @@ Pattern.prototype.midi = function (output) {
const device = getDevice(output, WebMidi.outputs);
hap.ensureObjectValue();
//magic number to get audio engine to line up, can probably be calculated somehow
const latency = 0.034;
const latencyMs = 34;
// passing a string with a +num into the webmidi api adds an offset to the current time https://webmidijs.org/api/classes/Output
const timeOffsetString = `+${(targetTime - currentTime + latency) * 1000}`;
const timeOffsetString = `${getEventOffsetMs(targetTime, currentTime) + latencyMs}`;
// destructure value
let { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd, gain = 1, velocity = 0.9 } = hap.value;

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@ -6,7 +6,7 @@ This program is free software: you can redistribute it and/or modify it under th
import OSC from 'osc-js';
import { logger, parseNumeral, Pattern } from '@strudel/core';
import { logger, parseNumeral, Pattern, getEventOffsetMs } from '@strudel/core';
let connection; // Promise<OSC>
function connect() {
@ -44,7 +44,7 @@ function connect() {
* @returns Pattern
*/
Pattern.prototype.osc = function () {
return this.onTrigger(async (time, hap, currentTime, cps = 1) => {
return this.onTrigger(async (time, hap, currentTime, cps = 1, targetTime) => {
hap.ensureObjectValue();
const osc = await connect();
const cycle = hap.wholeOrPart().begin.valueOf();
@ -56,7 +56,8 @@ Pattern.prototype.osc = function () {
const keyvals = Object.entries(controls).flat();
// time should be audio time of onset
// currentTime should be current time of audio context (slightly before time)
const offset = (time - currentTime) * 1000;
const offset = getEventOffsetMs(targetTime, currentTime);
// timestamp in milliseconds used to trigger the osc bundle at a precise moment
const ts = Math.floor(Date.now() + offset);
const message = new OSC.Message('/dirt/play', ...keyvals);