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ChomeNS 2022-11-29 19:54:03 +07:00
parent 2765c24e2d
commit 84ad91a574
1 changed files with 15 additions and 15 deletions
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30
util/midi_converter/main.js
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@ -1,38 +1,38 @@
/* eslint-disable max-len */
/* eslint-disable require-jsdoc */
const {Midi} = require('@tonejs/midi');
const {convertNote, convertPercussionNote} = require('./convert_note.js');
const { Midi } = require('@tonejs/midi')
const { convertNote, convertPercussionNote } = require('./convert_note.js')
function convertMidi(midi) {
if (!(midi instanceof Midi)) throw new TypeError('midi must be an instance of require(\'@tonejs/midi\').Midi');
function convertMidi (midi) {
if (!(midi instanceof Midi)) throw new TypeError('midi must be an instance of require(\'@tonejs/midi\').Midi')
let noteList = [];
let noteList = []
for (const track of midi.tracks) {
for (const note of track.notes) {
const mcNote = (track.instrument.percussion ? convertPercussionNote : convertNote)(track, note);
const mcNote = (track.instrument.percussion ? convertPercussionNote : convertNote)(track, note)
if (mcNote != null) {
noteList.push(mcNote);
noteList.push(mcNote)
}
}
}
noteList = noteList.sort((a, b) => a.time - b.time);
noteList = noteList.sort((a, b) => a.time - b.time)
// It might be better to move some of this code to the converting loop (for performance reasons)
let maxVolume = 0.001;
let maxVolume = 0.001
for (const note of noteList) {
if (note.volume > maxVolume) maxVolume = note.volume;
if (note.volume > maxVolume) maxVolume = note.volume
}
for (const note of noteList) {
note.volume /= maxVolume;
note.volume /= maxVolume
}
let songLength = 0;
let songLength = 0
for (const note of noteList) {
if (note.time > songLength) songLength = note.time;
if (note.time > songLength) songLength = note.time
}
return {name: midi.header.name, notes: noteList, loop: false, loopPosition: 0, length: songLength};
return { name: midi.header.name, notes: noteList, loop: false, loopPosition: 0, length: songLength }
}
module.exports = {convertMidi, convertNote, convertPercussionNote};
module.exports = { convertMidi, convertNote, convertPercussionNote }