SEnding MIDI message command

[Bipman1]

Hi

Amazing library and much better than some out there! I've got my program sending notes etc. to a soft synth and that is all working well but what I don't know how to do is send a command. For example, say a knob on a soft synth hosted in Ableton live is mapped to a specific MIDI number, how would I send a command to alter the knob? I hope that makes sense and if someone could point me in the right direction I'd be most happy!

Bipman

[melanchall]

Hi,

mapped to a specific MIDI number

Can you please clarify what do you mean? Are you talking about MIDI controller numbers (MIDI CC)? If yes, just try to send ControlChangeEvent like this:

_outputDevice.SendEvent(new ControlChangeEvent(
    (SevenBitNumber)controllerNumber,
    (SevenBitNumber)controllerValue) { Channel = (FourBitNumber)channel });

Set controllerNumber, controllerValue and channel to required values. Please note that channel in DryWetMIDI is a number from 0 to 15, not from 1 to 16.

Thanks,
Max

[Bipman1]

Hi

I'll give it a go thanks.

Bipman

[Bipman1]

Hmmm, not working. The item I am trying to change is a MIDI CC item if that makes a difference. For instance CC 77 is vibrato depth and 93 is chorus depth. Also, in your code above I couldn't get the channel to work as it says the constructor does not take 3 arguments.

Bipman

[melanchall]

Please provide your code. In my code example I didn't show you 3 parameters in constructor so I don't understand what are trying to do. Also please note that DryWetMIDI has complete documentation. For example, on ControlChangeEvent – https://melanchall.github.io/drywetmidi/api/Melanchall.DryWetMidi.Core.ControlChangeEvent.html.

[Bipman1]

Hi, The code is

using System;
using Melanchall.DryWetMidi.Multimedia;
using Melanchall.DryWetMidi.Core;
using System.Threading;

// ...

using (var outputDevice = OutputDevice.GetByName("Gloving"))
{
outputDevice.EventSent += OnEventSent;

using (var inputDevice = InputDevice.GetByName("Gloving"))
{
    Melanchall.DryWetMidi.Common.SevenBitNumber controllerNumber = (Melanchall.DryWetMidi.Common.SevenBitNumber)93;
    Melanchall.DryWetMidi.Common.SevenBitNumber controllerValue = (Melanchall.DryWetMidi.Common.SevenBitNumber)0;
    Melanchall.DryWetMidi.Common.SevenBitNumber channel = (Melanchall.DryWetMidi.Common.SevenBitNumber)1;
    float count = 0;

    inputDevice.EventReceived += OnEventReceived;
    inputDevice.StartEventsListening();

    outputDevice.SendEvent(new NoteOnEvent((Melanchall.DryWetMidi.Common.SevenBitNumber)60, (Melanchall.DryWetMidi.Common.SevenBitNumber)127));
    Thread.Sleep(1000);
    outputDevice.SendEvent(new NoteOffEvent());
    Thread.Sleep(500);
    outputDevice.SendEvent(new NoteOnEvent((Melanchall.DryWetMidi.Common.SevenBitNumber)60, (Melanchall.DryWetMidi.Common.SevenBitNumber)127));
    Thread.Sleep(1000);

    for (count = 0; count < 1; count += 0.1F)
    {

        outputDevice.SendEvent(new ControlChangeEvent(controllerNumber, controllerValue));
        controllerValue = (Melanchall.DryWetMidi.Common.SevenBitNumber)count;
        Thread.Sleep(200);
    }
    
    outputDevice.SendEvent(new NoteOffEvent());

}

}

void OnEventReceived(object sender, MidiEventReceivedEventArgs e)
{
var midiDevice = (MidiDevice)sender;
Console.WriteLine($"Event received from '{midiDevice.Name}' at {DateTime.Now}: {e.Event}");
}

void OnEventSent(object sender, MidiEventSentEventArgs e)
{
var midiDevice = (MidiDevice)sender;
Console.WriteLine($"Event sent to '{midiDevice.Name}' at {DateTime.Now}: {e.Event}");
}//

It's going through loopMidi and I have the logs from there if it helps. I'm going to switch on logging in Ableton too.

Bipman

SPG-NEW12TH.LOG

[Bipman1]

Hi

The answer seems to be that although I am setting the controllerValue in the loop to the count variable, it remains at 0. I'm obviously setting it wrong somehow.

Bipman

[Bipman1]

Hi

Got it working. I was stupidly trying to send a float as the value on the synth can be 0.00 to 1.00. I changed to int and all OK! I'm used to using c++ (as an extension to C) as is probably evident in my code but c# has better libraries so am trying to switch from c++ to c# for when I don't need performance. Great library by the way and thanks for the support.

Bipman

[melanchall]

Thank you :)