Some MIDI devices have several ports. For example, under Linux,
$ amidi -l
Dir Device Name
IO hw:1,0,0 Launchpad X MIDI 1
IO hw:1,0,1 Launchpad X MIDI 2
shows that Launchpad X makes two MIDI ports available: 1 and 2. The user guide names these ports in the same way, telling that each has its specific function.
But when I use MidiSystem.getMidiDeviceInfo() on the same system, all I get is X [hw:1,0,0] and X [hw:1,0,1]. No trace of explicit MIDI 1 and MIDI 2 or something similar. The latter is also true for MidiDevice.getDeviceInfo().getName() and MidiDevice.getDeviceInfo().getDescription(). I might parse the [hw:1,0,X] part of each name and assume that the port number is X + 1 but I have doubts about the portability of such a solution.
How to know a MIDI device's port number (in the device's own numbering) in Java?
