midimessage/dist/index.js

Web-MIDI Message Parser

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.midimessage = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
"use strict";

Object.defineProperty(exports, "__esModule", {
	value: true
});

exports["default"] = function (event) {
	function MIDIMessage(event) {
		this._event = event;
		this._data = event.data;
		this.receivedTime = event.receivedTime;

		if (this._data && this._data.length < 2) {
			console.warn("Illegal MIDI message of length", this._data.length);
			return;
		}

		this._messageCode = event.data[0] & 0xf0;
		this.channel = event.data[0] & 0x0f;

		switch (this._messageCode) {

			// Note Off
			case 0x80:
				this.messageType = "noteoff";
				this.key = event.data[1] & 0x7F;
				this.velocity = event.data[2] & 0x7F;
				break;

			// Note On
			case 0x90:
				this.messageType = "noteon";
				this.key = event.data[1] & 0x7F;
				this.velocity = event.data[2] & 0x7F;
				break;

			// Polyphonic Key Pressure
			case 0xA0:
				this.messageType = "keypressure";
				this.key = event.data[1] & 0x7F;
				this.pressure = event.data[2] & 0x7F;
				break;

			// Control Change
			case 0xB0:
				this.messageType = "controlchange";
				this.controllerNumber = event.data[1] & 0x7F;
				this.controllerValue = event.data[2] & 0x7F;

				if (this.controllerNumber === 120 && this.controllerValue === 0) {
					this.channelModeMessage = "allsoundoff";
				} else if (this.controllerNumber === 121) {
					this.channelModeMessage = "resetallcontrollers";
				} else if (this.controllerNumber === 122) {
					if (this.controllerValue === 0) {
						this.channelModeMessage = "localcontroloff";
					} else {
						this.channelModeMessage = "localcontrolon";
					}
				} else if (this.controllerNumber === 123 && this.controllerValue === 0) {
					this.channelModeMessage = "allnotesoff";
				} else if (this.controllerNumber === 124 && this.controllerValue === 0) {
					this.channelModeMessage = "omnimodeoff";
				} else if (this.controllerNumber === 125 && this.controllerValue === 0) {
					this.channelModeMessage = "omnimodeon";
				} else if (this.controllerNumber === 126) {
					this.channelModeMessage = "monomodeon";
				} else if (this.controllerNumber === 127) {
					this.channelModeMessage = "polymodeon";
				}
				break;

			// Program Change
			case 0xC0:
				this.messageType = "programchange";
				this.program = event.data[1];
				break;

			// Channel Pressure
			case 0xD0:
				this.messageType = "channelpressure";
				this.pressure = event.data[1] & 0x7F;
				break;

			// Pitch Bend Change
			case 0xE0:
				this.messageType = "pitchbendchange";
				var msb = event.data[2] & 0x7F;
				var lsb = event.data[1] & 0x7F;
				this.pitchBend = (msb << 8) + lsb;
				break;
		}
	}

	return new MIDIMessage(event);
};

module.exports = exports["default"];

},{}]},{},[1])(1)
});