MidiSplitter

java.lang.Object
- com.github.noahr_atc.midisplitter.MidiSplitter

```
public class MidiSplitter
extends Object
```
MIDI Splitter (Java)

This program receives MIDI messages from a transmitting MIDI port and splits any incoming notes (e.g. from a chord) into the first available MIDI channel. This is based off of a similar application I wrote in C#, but I decided to do a Java rewrite to make it available on operating systems other than Windows.

This program was designed to get around an issue with using MIDI keyboards in Moppy2, but may be useful for other applications as well. Recommended software to use alongside this on Windows1 is loopMIDI by Tobias Erichsen. On most Linux kernels, a virtual MIDI through-port is provided and can be enabled with modprobe snd-virmidi snd_index=<index of last audio card + 1>.2

1 - Windows users please note that due to a bug with MIDI device handling in Windows, when running this program on Windows a device will not be removed when the lists are refreshed, however new devices will be added. The ghost device will disappear upon restarting the program.

2 - Linux users please note that due to an issue with JVM MIDI access, Java reports all sub-devices of the virmidi ports seperately. I have found success in simply not using more than one virmidi port where the second digit (y) in the [hw: x,y,z] is the same.

Since:

2020-01-28

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class Description
  
  static class MidiSplitter.ExitCodes
  Defines the different exit codes of the application.
- Constructor Summary
  
  Constructors
  Constructor Description
  
  MidiSplitter()
- Method Summary
  
  Modifier and Type Method Description
  
  static void main(String[] args)
  The entrance method for the program.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MidiSplitter
```
public MidiSplitter()
```
- Method Detail
  - main
```
public static void main(String[] args)
```
    The entrance method for the program.
    Parameters:
    
    args - the command line arguments specified.
    
    -h, -help, --help
    
    Display the help prompt
    
    -i device, --input device
    
    Specify a default MIDI input device to attempt to select
    
    Sequential instances of argument represent prioritized default input devices
    
    If both a valid --input and --output argument are provided, the splitter will start on launch
    
    -o device, --output device
    
    Specify a default MIDI output device to attempt to select
    
    Sequential instances of argument represent prioritized default output devices
    
    If both a valid --input and --output argument are provided, the splitter will start on launch
    
    -s, --silent
    
    Suppress all console output, including error messages
    
    -q, --quiet
    
    Show console error messages, but don't ask for user input; overridden by --silent
    
    -d, --debug
    
    Output MIDI translation debugging information to the console; overridden by --silent and --quiet
    
    --
    
    Don't interpret arguments inside '--' block as options (for example you could do '--input -- -i --' if you had a device named '-i')
    
    Since:
    
    2020-03-08