midieval

A small helper to simplify working with Web MIDI API. After initiated, it listens to all connected MIDI devices and wraps the received MIDI messages in a more human readable format.

So far it only supports listening to MIDI messages (not sending) and is used in the following manner:

``js
midieval.in(function(msg) {
if (msg.type === 'Unknown') { return; }
console.log(msg);
});
`

which should generate something like:

`js
Note {
channel: 1,
device: { id: "-123456789", name: "Yamaha" },
note: "G",
octave: -1,
timestamp: 20162.53555006,
type: "Note On",
velocity: 69,
_data: Uint8Array(3) [144, 55, 69]
}
`

or:

`js
ControlChange {
channel: 1,
controller: "Sustain"
device: { id: "-123456789", name: "Yamaha" },
timestamp: 20242.53555006,
type: "Control Change",
value: 55,
_data: Uint8Array(3) [176, 64, 55]
}
`

Currently supported message wrappers are:
- Note On
- Note Off
- Control Change
- Pitch Bend
- Aftertouch
- Channel Pressure
- Program Change

If no matching message wrapper is found, it gives you a default Message with type Unknown`, with MIDI data, timeStamp and device.