Midi-json-parser NPM

midi-json-parser

This module is parsing midi files into a human-readable JSON object.

This module parses a binary MIDI file and turns it into a JSON representation. This JSON representation can then for example be used to pass it on to the midi-player. It can also be encoded again as a binary MIDI file using the json-midi-encoder.

Usage

This module is available on npm and can be installed by running the following command:

npm install midi-json-parser

Once the module is installed you can use its one and only function as shown in the example below:

import { parseArrayBuffer } from 'midi-json-parser';

// Let's assume there is an ArrayBuffer called arrayBuffer which contains the binary content of a
// MIDI file.

parseArrayBuffer(arrayBuffer).then((json) => {
    // json is the JSON representation of the MIDI file.
});

In case you are comfortable with TypeScript, this is the interface which describes the JSON representation:

interface IMidiFile {
    division: number;

    format: number;

    tracks: TMidiEvent[][];
}

The type TMidiEvent is a union of all possible MIDI events. Here is the complete list of all MIDI events this module can handle:

Acknowledgement

Developing this module wouldn't have been possible without all the great resources out there. The following list tries to mention a few of them:

A detailed specification of the MIDI file format as HTML: Standard MIDI-File Format Spec. 1.1, updated and PDF: Standard MIDI-File Format Spec. 1.1, updated
A brief description of the MIDI file format: Outline of the Standard MIDI File Structure
A blog post about the timing information in MIDI files: Timing in MIDI files
An explanation of the concept called running status: Running Status
Actually a documentation for a Python library, but it also contains extensive information on MIDI messages itself: Mido - MIDI Objects for Python
Very detailed information on meta messages, but also on many other non MIDI related audio topics as well: RecordingBlogs.com Wiki
A JavaScript MIDI parser and synthesiser: jasmid - A Javascript MIDI file reader and synthesiser and its excluded parser: midi-file-parser
A complete MIDI app which also contains a parser: MIDI.js
A very similar parser but for Node.js only MIDI Converter
A parser for converting MIDI into a JavaScript object which can also turn it back into a binary MIDI file again: MIDIFile

MIDI

@babel/runtime midi-json-parser-broker midi-json-parser-worker tslib

@everything-registry/sub-chunk-2168 konduktiva @zalastax/nolb-mid audio-source-composer @infinitebrahmanuniverse/nolb-mid

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