Comments on: Getting ProMIDI to work in Processing on OS X Leopard

By: Jocepos

Jocepos — Tue, 20 Apr 2010 13:01:25 +0000

I would just like to comment for anybody considering the use of proMIDI other than for very simple prototyping is a big no no. proMIDI uses its own implementation of the Java realtime sequencer which tends to crash if left running for any longer than 10 minutes. I wasted 4 – 5 months trying to fix several parts of their sequencer to successfully make my step sequencer work. It still suffered from unstable timing and would crash after 10 minutes.

Conclusively, I ended up having to re-implement my entire project in the native midi library for java.

After doing so, I found a good release which natively incorporates Java’s MIDI library, see link below as this is in my opinion a much better alternative to proMIDI:

Use RWMIDI for processing instead:

http://ruinwesen.com/support

Jocepos

By: tiia

tiia — Wed, 10 Mar 2010 12:01:25 +0000

Hello,
I’ve been trying to get ProMidi to run on my OS 10.5 MacBook for a while now. Nothing seems to work! i followed yr above instructions, and found that those mmj files were already in the specified folder. i proceeded anyways, then checked my audio midi setup, and confirmed the device was online. Yet when i restart Processing, and try to run *any* ProMIDI scripts, i find that i get the same error as always:(
Example:

Exception in thread “Animation Thread” java.lang.NoClassDefFoundError: processing/core/PApplet
at promidi.MidiIO.(MidiIO.java:100)

Please could someone help me out? its seriously getting to me, so it would be seriously appreciated!

thanks a million

By: xiaosquared

xiaosquared — Fri, 30 Oct 2009 20:04:55 +0000

Thanks for the post. It worked perfectly, and I got ProMIDI to print out the devices that I need.

However, I tried running some code to print out the IO lines directly in Java using JavaSound’s MIDI capabilities, and it gave me the same error that chrispix got:

Exception in thread “main” java.lang.UnsatisfiedLinkError: /Users/xx/Library/Java/Extensions/libmmj.jnilib: no suitable image found. Did find: /Users/xx/Library/Java/Extensions/libmmj.jnilib: no matching architecture in universal wrapper
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1878)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1771)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1045)
at de.humatic.mmj.MidiSystem.loadLibrary(MidiSystem.java:79)
at de.humatic.mmj.MidiSystem.getDevices(MidiSystem.java:287)
at de.humatic.mmj.spi.CoreMidiProvider.getDeviceInfo(CoreMidiProvider.java:37)
at javax.sound.midi.MidiSystem.getMidiDeviceInfo(MidiSystem.java:173)
at test.MidiTest.main(MidiTest.java:17)

Since Processing is based on Java, I assumed that your fix would work in Java as well. Do you have any idea why this is? Any thoughts on how to fix it? Thanks in advance.

Here’s the Java code snippet:
MidiDevice device = null;
MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();
for (int i = 0; i < infos.length; i++) {
try {
device = MidiSystem.getMidiDevice(infos[i]);
} catch (MidiUnavailableException e) {
System.out.println("Midi Unavailable");
}
finally {
System.out.println(infos[i]);
}
}

By: GiantRobot

GiantRobot — Sun, 16 Aug 2009 02:23:30 +0000

Nevermind, a little more looking revealed the new site.

http://creativecomputing.cc/p5libs/promidi/

By: GiantRobot

GiantRobot — Sun, 16 Aug 2009 02:17:23 +0000

Looks like the ProMIDI lib site is down, could you post your copy of the lib?

I’m dumbfounded about osx’s core midi not natively working with Java. I’ve written tons of midi i/o code in java on windows over the last 2 years. I just got my first macbook pro and tonight started porting my code over. Guess I’ll go to bed early.

I’m getting the same error message as chrispix. I assume its the lack of ProMIDI.

By: Tedb0t

Tedb0t — Thu, 23 Jul 2009 18:52:57 +0000

Hm, what current Java versions do you mean? I just recompiled my test using J2SE 5.0 with the 2006 ProMIDI lib on OS X 10.5.7 with the old MMJ files as of this original posting and it worked normally. I haven’t tried with any newer MMJ files.

By: chrispix

chrispix — Thu, 23 Jul 2009 18:32:57 +0000

I’m not sure this method works anymore. According to the June 17, 2009 post from corporeal on http://processing.org/discourse/yabb2/YaBB.pl?num=1188575049/15 the mmj files don’t work with the current java versions on OS X.

When I tried the above, I get the following error, which seems to support that:

Uncaught exception in main method: java.lang.UnsatisfiedLinkError: /Library/Java/Extensions/libmmj.jnilib: no suitable image found. Did find: /Library/Java/Extensions/libmmj.jnilib: no matching architecture in universal wrapper