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mjwrapper 0.1 ============= 1. About -------- mjwrapper is designed to fill a hole in Apple's OS X operating system. It is a well-known issue that Java applications cannot see MIDI devices using OS X 10.5, 10.6 or some later versions of 10.4. This library is a bridge between CoreMIDI (Apple's interface to MIDI devices) and the Java world. UPDATE (15/5/10): Snow Leopard's latest Java patch theoretically re-adds support for MIDI devices under Java. However, sysex support seems to be very buggy! Whilst there are currently two other known libraries which do this, there are several problems with 64-bit support and also the ability to send sysex messages to the devices. To my knowledge, this is the first open-source implementation of such a library. This library was written in part to facilitate the use of the MegaDrum configuration tool (MCT) on Mac OS X systems. MegaDrum is an electronic drum controller which converts hits on electronic drums to MIDI notes. MCT is a Java application which uses sysex messages to control it. Also in part it was written in order to put something into the public domain, since other developers seemed less than willing to do this. DISCLAIMER: I am not a Java programmer, and this is the very first time I've written a major application using Java, Objective-C/Cocoa, CoreMIDI or any other MIDI framework for that matter. I have made many assumptions along the way which may invalidate this library completely. If you have suggestions, or better yet, fixes and improvements, then please visit the website at the bottom of this page and tell me about it! In addition, I make NO guarantees as to whether this library will work for you or not. I can only say that, in my case, things have worked fine. As a side-node, mjwrapper stands for 'Mac Java Wrapper'. - David Moxey 5/12/09 2. License ---------- mjwrapper is distributed under the GPL v2. Please see the included LICENSE file for more information. 3. Installation --------------- Installation is extremely quick and simple. a) In the Finder, navigate to Go -> Go to Folder... b) Type in the path /Library/Java/Extensions c) Copy mjwrapper.jnilib and mjwrapper.jar to that folder. In theory this library should work on OS X 10.4 (Tiger) onwards but has ONLY been tested on OS X 10.6 (Snow Leopard). 4. Compilation -------------- The full source code to mjwrapper is available in the src directory. To compile the source, first install Apple's Developer Tools (included in the operating system DVDs), and then: a) Open a terminal and navigate to the src/ folder. b) Type 'make'. c) Type 'make install'. Hopefully the comments in the files themselves should lend a clue as to the way I have gone about implementing this library!