MiPortProvider.java

package org.herac.tuxguitar.midiinput;

import java.util.ArrayList;
import java.util.List;

import javax.sound.midi.MidiDevice;
import javax.sound.midi.MidiSystem;
import javax.sound.midi.MidiUnavailableException;
import javax.sound.midi.Sequencer;

import org.herac.tuxguitar.gui.TuxGuitar;

public class MiPortProvider {
  public static MidiDevice getDevice(String inDeviceName) throws MiException {
    MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();

    for (int i = 0; i < infos.length; i++) {
      if (infos[i].getName().equals(inDeviceName)) {
        try {
          MidiDevice device = MidiSystem.getMidiDevice(infos[i]);

          if (device.getMaxTransmitters() == 0 || device instanceof Sequencer)
            continue;

          return (device);
        } catch (MidiUnavailableException mue) {
          throw new MiException(TuxGuitar
              .getProperty("midiinput.error.midi.unavailable"), mue);
        }
      }
    }

    return (null);
  }

  public static List<String> listPortsNames() throws MiException {
    try {
      List<String> portsNames = new ArrayList<String>();
      MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();

      for (int i = 0; i < infos.length; i++) {
        try {

          boolean exists = false;

          for (final String name : portsNames) {
            if (name.equals(infos[i].getName())) {
              exists = true;
              break;
            }
          }

          if (!exists) {
            MidiDevice device = MidiSystem.getMidiDevice(infos[i]);

            if (device.getMaxTransmitters() == 0 || device instanceof Sequencer)
              continue;

            portsNames.add(infos[i].getName());
          }

        } catch (MidiUnavailableException mue) {
          throw new MiException(TuxGuitar
              .getProperty("midiinput.error.midi.unavailable"), mue);
        }
      }

      return portsNames;
    } catch (Throwable t) {
      throw new MiException(TuxGuitar.getProperty("midiinput.error.unknown"), t);
    }
  }
}