Java NXTCommandConnector.getSingletonOpen 예제들

예제 #1

파일: Sound.java 프로젝트: lego-line/lejos

/**
 * Sound class. Usage: SoundSensor.playTone(500, 1000);
 *
 * @author <a href="mailto:[email protected]">Brian Bagnall</a>
 */
public class Sound {
  private static final NXTCommand nxtCommand = NXTCommandConnector.getSingletonOpen();

  // Make sure no one tries to instantiate this.
  private Sound() {}

  public static int playTone(int frequency, int duration) {
    try {
      return nxtCommand.playTone(frequency, duration);
    } catch (IOException ioe) {
      System.out.println(ioe.getMessage());
      return -1;
    }
  }

  /**
   * Plays a sound file from the NXT. SoundSensor files use the .rso extension. The filename is not
   * case sensitive. Filenames on the NXT Bricks display do now show the filename extension.
   *
   * @param fileName e.g. "Woops.rso"
   * @param repeat true = repeat, false = play once.
   * @return If you receive a non-zero number, the filename is probably wrong or the file is not
   *     uploaded to the NXT brick.
   */
  public static byte playSoundFile(String fileName, boolean repeat) {
    try {
      return nxtCommand.playSoundFile(fileName, repeat);
    } catch (IOException ioe) {
      System.out.println(ioe.getMessage());
      return -1;
    }
  }

  /**
   * Plays a sound file once from the NXT. SoundSensor files use the .rso extension. The filename is
   * not case sensitive. Filenames on the NXT Bricks display do now show the filename extension.
   *
   * @param fileName e.g. "Woops.rso"
   * @return If you receive a non-zero number, the filename is probably wrong or the file is not
   *     uploaded to the NXT brick.
   */
  public static byte playSoundFile(String fileName) {
    return Sound.playSoundFile(fileName, false);
  }

  /**
   * Stops a sound file that has been playing/repeating.
   *
   * @return Error code.
   */
  public static int stopSoundPlayback() {
    try {
      return nxtCommand.stopSoundPlayback();
    } catch (IOException ioe) {
      System.out.println(ioe.getMessage());
      return -1;
    }
  }
}