Easiest way to forward all messages from an input to an output

[d-kersten]

Hey there, thanks for making this!

I would like to implement routing capabilities and forward all messages from an input device to another output device.

What would be the easiest way to do so? I thought I could use the midimessage event on the input (https://webmidijs.org/docs/v2.5.3/classes/Input.html#event_midimessage) and the send method (https://webmidijs.org/docs/v2.5.3/classes/Output.html#method_send) on the output.

But the send method requires a status parameter which is not available from the midimessage input event.

I'm currently trying to capture all possible event types individually and map them to the appropriate send methods but I face some discrepancies and fear I'll miss something – so I thought there might be an easier 'catch all' way to do it.

Thanks!

[djipco]

The ability to route messages has been requested quite a few times and will be integrated into v3. Meanwhile, you can do the following:

WebMidi.inputs[0].addListener("noteon", "all", function (e) {
  console.log(e);
  WebMidi.outputs[0].send(e.data[0], [e.data[1], e.data[2]]);
})

The first element of the e.data array is the so-called status byte. It is followed by 0 or more data bytes. The fact that the property is called data is a bit confusing. I will try to address that in v3.

[d-kersten]

Thank you, that makes sense and will make things easier and more error proof I guess.