MidiTransmitter.java

package org.herac.tuxguitar.player.base;

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

public class MidiTransmitter {

  private class MidiReceiverItem {
    private String id;
    private MidiReceiver receiver;

    public MidiReceiverItem(String id, MidiReceiver receiver) {
      this.id = id;
      this.receiver = receiver;
    }

    public String getId() {
      return this.id;
    }

    public MidiReceiver getReceiver() {
      return this.receiver;
    }
  }

  private List<MidiReceiverItem> receivers;

  public MidiTransmitter() {
    this.receivers = new ArrayList<MidiReceiverItem>();
  }

  public void addReceiver(String id, MidiReceiver receiver) {
    MidiReceiverItem item = getReceiver(id);
    if (item == null) {
      this.receivers.add(new MidiReceiverItem(id, receiver));
    }
  }

  private MidiReceiverItem getReceiver(String id) {
    if (id != null) {
      for (int i = 0; i < this.receivers.size(); i++) {
        MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
        if (receiver.getId() != null && receiver.getId().equals(id)) {
          return receiver;
        }
      }
    }
    return null;
  }

  public void removeReceiver(String id) {
    MidiReceiverItem item = getReceiver(id);
    if (item != null) {
      this.receivers.remove(item);
    }
  }

  public void sendAllNotesOff() throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendAllNotesOff();
    }
  }

  public void sendControlChange(int channel, int controller, int value)
      throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendControlChange(channel, controller, value);
    }
  }

  public void sendNoteOff(int channel, int key, int velocity)
      throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendNoteOff(channel, key, velocity);
    }
  }

  public void sendNoteOn(int channel, int key, int velocity)
      throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendNoteOn(channel, key, velocity);
    }
  }

  public void sendPitchBend(int channel, int value) throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendPitchBend(channel, value);
    }
  }

  public void sendProgramChange(int channel, int value)
      throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendProgramChange(channel, value);
    }
  }

  public void sendSystemReset() throws MidiPlayerException {
    for (int i = 0; i < this.receivers.size(); i++) {
      MidiReceiverItem receiver = (MidiReceiverItem) this.receivers.get(i);
      receiver.getReceiver().sendSystemReset();
    }
  }
}