Midi input from keyboard

[andre2007]

In a "this week in D" article I saw you work on a midi keyboard teaching program. By chance I was looking into the midi module from you to see whether i can use to use it with my e-piano. From your article I understand I can use it for midi input from a physical device (usb cable). Do you have by chance some sample coding to get started?

[adamdruppe]

I'll post my little program up here later but the core of it is fairly simple:

                MidiInput mi = MidiInput("hw:4,0"); // string dfevice name on Linux, on Windows it just always uses the default device which probably just works anyway, it does on my computer, so i never implemented device switching

                // so im not supposed to call a midi out function from inside the callback...
                mi.record((ts, status, data1, data2) {
                        // time stamp, midi status, data1 data 2 make up the midi message
              });

Of course doing stuff with the messages gets trickier but even this minimal thing should give you something to writeln to prove it works with your hardware too.

[andre2007]

Fantastic, thanks a lot!

[adamdruppe]

This is my very much work-in-progress program:

midi.zip

shoud be able to compile with dmd -i midi.d with the arsd directory in the search path.

Run it as midi.exe program.mid to play one (I included one midi you can try) or midi.exe record with a midi device plugged in to see it respond to your key presses on the midi hardware.

Tons of bugs, I wanted to go back and work on it more after the blog but have just been too busy with other things.

[andre2007]

Fantastic, thank you so much!

[adamdruppe]

lemme know if you get it all working.

[andre2007]

I started the midi app as single dub package and it was working fine. The app already looks really great! Thank you so much.