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generalize getDevice + begin midiIn implementation

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This commit is contained in:
Felix Roos 2023-09-13 13:48:33 +02:00
parent a6501474bb
commit 0a8874180c
1 changed files with 35 additions and 14 deletions
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49
packages/midi/midi.mjs
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@ -8,6 +8,7 @@ import * as _WebMidi from 'webmidi';
import { Pattern, isPattern, logger } from '@strudel.cycles/core';
import { noteToMidi } from '@strudel.cycles/core';
import { Note } from 'webmidi';
import EventEmitter from 'events';
// if you use WebMidi from outside of this package, make sure to import that instance:
export const { WebMidi } = _WebMidi;
@ -15,8 +16,8 @@ function supportsMidi() {
return typeof navigator.requestMIDIAccess === 'function';
}
function getMidiDeviceNamesString(outputs) {
return outputs.map((o) => `'${o.name}'`).join(' | ');
function getMidiDeviceNamesString(devices) {
return devices.map((o) => `'${o.name}'`).join(' | ');
}
export function enableWebMidi(options = {}) {
@ -52,26 +53,24 @@ export function enableWebMidi(options = {}) {
});
});
}
// const outputByName = (name: string) => WebMidi.getOutputByName(name);
const outputByName = (name) => WebMidi.getOutputByName(name);
// output?: string | number, outputs: typeof WebMidi.outputs
function getDevice(output, outputs) {
if (!outputs.length) {
function getDevice(indexOrName, devices) {
if (!devices.length) {
throw new Error(`🔌 No MIDI devices found. Connect a device or enable IAC Driver.`);
}
if (typeof output === 'number') {
return outputs[output];
if (typeof indexOrName === 'number') {
return devices[indexOrName];
}
if (typeof output === 'string') {
return outputByName(output);
const byName = (name) => devices.find((output) => output.name.includes(name));
if (typeof indexOrName === 'string') {
return byName(indexOrName);
}
// attempt to default to first IAC device if none is specified
const IACOutput = outputs.find((output) => output.name.includes('IAC'));
const device = IACOutput ?? outputs[0];
const IACOutput = byName('IAC');
const device = IACOutput ?? devices[0];
if (!device) {
throw new Error(
`🔌 MIDI device '${output ? output : ''}' not found. Use one of ${getMidiDeviceNamesString(WebMidi.outputs)}`,
`🔌 MIDI device '${device ? device : ''}' not found. Use one of ${getMidiDeviceNamesString(devices)}`,
);
}
@ -137,3 +136,25 @@ Pattern.prototype.midi = function (output) {
}
});
};
export async function midiIn(input) {
console.log('midi in...');
const initial = await enableWebMidi(); // only returns on first init
const device = getDevice(input, WebMidi.inputs);
if (initial) {
const otherInputs = WebMidi.inputs.filter((o) => o.name !== device.name);
logger(
`Midi enabled! Using "${device.name}". ${
otherInputs?.length ? `Also available: ${getMidiDeviceNamesString(otherInputs)}` : ''
}`,
);
}
return (fn) => {
device.addListener(EventEmitter.ANY_EVENT, (...args) => {
console.log('event!', args);
fn(args);
});
return;
};
}