Hello my name is Faust,
I am new to processing, just started now to learn it. I am an electronic music producer so what really interest me is how processing interact with midi. I downloaded rwmidi library. I would like to ask you to help me a littlebit starting using midi in processing, simple code examples will be really welcome.

What I want to do is starting with a very simple midi file in which only 2 notes are played ( C3 - G3 ). here attached file. So when C3 is played a circle is drawn and when G3 is played a line is drawn.

ww.sendspace.com/file/r6tlhx

thanks in advance

Dr Faust

PS. it seems I can't add a proper link on my message...am I wrong?

neither rwmidi or the two midi libraries in the processing libraries docs appear to be able to read midi files - all take their data from midi events generated by actual devices.

there is this:

http://processing.org/discourse/yabb2/num_1240555854.html

and this

http://processing.org/discourse/yabb2/num_1253105559.html

(i just googled for 'processing read midi file')

(and you can't post links until you've posted several (5) comments. the restriction is there to reduce spam.)

yes, it looks like you need a sequencer that'll take your file and generate midi events that you can feed into the program. http://en.wikipedia.org/wiki/List_of_MIDI_editors_and_sequencers

or, parse the file yourself. there are plenty of references that'll tell you what the bits mean, but as with all these things, there's more to it than you think - http://www.sonicspot.com/guide/midifiles.html

or convert the file into a friendlier format and use that.

something like this should work? or not?

jsresources.org/examples/MidiFileInfo.java.html

Now that I'm thinking about it, I remember that I used MidiYoke (Windows only) to emulate MIDI inputs.

The idea is to route the MIDI signals from the audio software to a virtual MIDI input that you can listen to in Processing.

I did that to sync audio and video effects (e.g. blur the image when putting some reverb) and it worked pretty well. You can find the source in this other thread:
http://processing.org/discourse/yabb2/num_1240680619.html

thanks for advices...it seems not very easy working with midifiles in processing ...if someone have any news about library that support midifile reading please forward me.

kind regards

dr faust

I've used MidiYoke too and it worked fine for my purposes...

yes MidiYoke could be a good solution although it's not the best one.
if some good developer can code a "MIDIFILE" reader for processing it could be really usefull and appreciated. Image graphics interacting live triggered by midi data... awesome! isn't it!!


best regards

Dr. Faust