How to create a midi file
jepcolombia opened this issue · comments
I would appreciate an example on how to write a midi file or do we have to use an extra library?
Hello @jepcolombia,
this feature was removed in version 2.0.0. Depending on the context it could be achieved in different ways. To answer your question: yes, it is beyond the scope of this library.
Feel free to give more context and you could get a few hints on how to do that.
thanks
Release 2.0.0: you might already find something in previous releases
[edit] better english hopefully[/edit]
It is pretty straightforward to write out the file, thankfully.
You basically do this:
const buffer = new Buffer.from(w.buildFile());
fs.writeFileSync('song.mid', buffer, function (err) {
if (err) throw err;
});
with w being a new MidiWriter( ... ).
I can provide a full example if needed.
Trying to use the example provided bu a syntax error appears Undefined ¨Buffer ¨. do I need to add something else?
Thanks in advance
Apologies, here's a full example.
const MidiWriter = require('midi-writer-js')
const fs = require('fs');
const track = new MidiWriter.Track();
track.addEvent([
new MidiWriter.NoteEvent({ pitch: ['E4', 'D4'], duration: '4' }),
new MidiWriter.NoteEvent({ pitch: ['C4'], duration: '2' }),
new MidiWriter.NoteEvent({ pitch: ['E4', 'D4'], duration: '4' }),
new MidiWriter.NoteEvent({ pitch: ['C4'], duration: '2' }),
new MidiWriter.NoteEvent({ pitch: ['C4', 'C4', 'C4', 'C4', 'D4', 'D4', 'D4', 'D4'], duration: '8' }),
new MidiWriter.NoteEvent({ pitch: ['E4', 'D4'], duration: '4' }),
new MidiWriter.NoteEvent({ pitch: ['C4'], duration: '2' })
], function (event, index) {
return { sequential: true };
}
);
const write = new MidiWriter.Writer(track);
console.log(write.dataUri());
const buffer = new Buffer.from(write.buildFile());
fs.writeFileSync('song.mid', buffer, function (err) {
if (err) throw err;
});
This is NodeJS, so you have to install it first with npm install midi-writer-js.
