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add midichan + docs

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This commit is contained in:
Felix Roos 2023-02-25 12:23:01 +01:00
parent 5de6643604
commit 886f8449fd
2 changed files with 36 additions and 7 deletions
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18
packages/midi/midi.mjs
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@ -64,7 +64,7 @@ function getDevice(output, outputs) {
}
// Pattern.prototype.midi = function (output: string | number, channel = 1) {
Pattern.prototype.midi = function (output, channel = 1) {
Pattern.prototype.midi = function (output) {
if (!supportsMidi()) {
throw new Error(`🎹 WebMidi is not enabled. Supported Browsers: https://caniuse.com/?search=webmidi`);
}
@ -109,21 +109,27 @@ Pattern.prototype.midi = function (output, channel = 1) {
time = time * 1000 + timingOffset;
// destructure value
const { note, nrpnn, nrpv, ccn, ccv } = hap.value;
const { note, nrpnn, nrpv, ccn, ccv, midichan = 1 } = hap.value;
const velocity = hap.context?.velocity ?? 0.9; // TODO: refactor velocity
const duration = hap.duration.valueOf() * 1000 - 5;
if (note) {
const midiNumber = toMidi(note);
console.log('midi number', midiNumber);
device.playNote(midiNumber, channel, {
device.playNote(midiNumber, midichan, {
time,
duration,
attack: velocity,
});
}
if (ccn && ccv) {
device.sendControlChange(ccn, ccv, channel, { time });
if (ccv && ccn) {
if (typeof ccv !== 'number' || ccv < 0 || ccv > 1) {
throw new Error('expected ccv to be a number between 0 and 1');
}
if (!['string', 'number'].includes(typeof ccn)) {
throw new Error('expected ccn to be a number or a string');
}
const scaled = Math.round(ccv * 127);
device.sendControlChange(ccn, scaled, midichan, { time });
}
});
};