예제 #1
0
  /** Re-crunch the numbers to get new wave data. */
  public void recalculateBytes() {
    chan.setValues(vol.getValue(), freq.getValue(), dur.getValue(), eq.getText());
    int duration = (int) (dur.getValue() / 1000.0 * sps);

    myEnviron.put("sps", sps);
    myEnviron.put("bps", sps);
    myEnviron.put("dur", duration);
    myEnviron.put("period", sps / (double) freq.getValue());
    myEnviron.put("freq", freq.getValue());
    myEnviron.put("vol", vol.getValue());

    byte[] ret = new byte[duration];
    myEnviron.put("z", ret);
    String script = "function calc(x) { return " + eq.getText() + "; }";
    script += " for (i = 0; i < " + duration + "; i++) z[i] = calc(i); z;";
    try {
      ret = (byte[]) myEnviron.engine.eval(script);
    } catch (ScriptException e) {
      System.err.println(e.getMessage());
    }

    //		byte[] ret = new byte[duration];
    //		for (int i = 0; i < ret.length; i++)
    //		{
    //			ret[i] = (byte) (vol.getValue() * Math.sin(i / (sps / (double) freq.getValue()) * 2 *
    // Math.PI));
    //			//			ret[i] = (byte) eval(eq.getText(),"x=" + i + ", freq=" + freq.getValue() + ", vol="
    //			//					+ vol.getValue());
    //		}
    for (int i = 0; i < 100 && i < ret.length; i++) System.out.print(ret[i] + ", ");
    System.out.println();
    waveData = ret;
    if (renderPane != null) {
      renderPane.renew();
      renderPane.updateUI();
    }
  }
예제 #2
0
  /**
   * Construct with a reference to a channel to represent.
   *
   * @param chan The channel whose waveform we are manipulating.
   */
  public OscillatorPane(Channel chan) {
    this.chan = chan;
    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    add(new JLabel("Volume:"));
    add(vol = new JSpinSlide(0, 127, chan.vol));
    add(new JLabel("Frequency:"));
    add(freq = new JSpinSlide(0, sps / 4, chan.freq));
    add(new JLabel("Duration (ms):"));
    add(dur = new JSpinSlide(0, 60000, chan.dur));
    add(new JLabel("Wave Equasion:"));
    add(eq = new JTextField(chan.eq));
    add(play = new JButton("Play"));
    setMaximumSize(new Dimension(200, Integer.MAX_VALUE));

    vol.setMajorTicks(true, 8);
    vol.addChangeListener(this);
    freq.setMajorTicks(true, 100);
    freq.addChangeListener(this);
    dur.setMajorTicks(true, 2000);
    dur.addChangeListener(this);
    play.addActionListener(this);

    recalculateBytes();
  }