/*
* OscillatorPlayer.java
*
* This file is part of jsresources.org
*/
/*
* Copyright (c) 1999 -2001 by Matthias Pfisterer
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
|<--- this code is formatted to fit into 80 columns --->|
*/
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
/* If the compilation fails because this class is not available,
get gnu.getopt from the URL given in the comment below.
*/
import gnu.getopt.Getopt;
/** <titleabbrev>OscillatorPlayer</titleabbrev>
<title>Playing waveforms</title>
<formalpara><title>Purpose</title>
<para>
Plays waveforms (sine, square, ...).
</para></formalpara>
<formalpara><title>Usage</title>
<para>
<cmdsynopsis>
<command>java OscillatorPlayer</command>
<arg><option>-t <replaceable>waveformtype</replaceable></option></arg>
<arg><option>-f <replaceable>signalfrequency</replaceable></option></arg>
<arg><option>-r <replaceable>samplerate</replaceable></option></arg>
<arg><option>-a <replaceable>amplitude</replaceable></option></arg>
</cmdsynopsis>
</para>
</formalpara>
<formalpara><title>Parameters</title>
<variablelist>
<varlistentry>
<term><option>-t <replaceable>waveformtype</replaceable></option></term>
<listitem><para>the waveform to play. One of sine, sqaure, triangle and sawtooth. Default: sine.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-f <replaceable>signalfrequency</replaceable></option></term>
<listitem><para>the frequency of the signal to create. Default: 1000 Hz.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-r <replaceable>samplerate</replaceable></option></term>
<listitem><para>the sample rate to use. Default: 44.1 kHz.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-a <replaceable>amplitude</replaceable></option></term>
<listitem><para>the amplitude of the generated signal. May range from 0.0 to 1.0. 1.0 means a full-scale wave. Default: 0.7.</para></listitem>
</varlistentry>
</variablelist>
</formalpara>
<formalpara><title>Bugs, limitations</title>
<para>
Full-scale waves can lead to clipping. It is currently not known
which component is responsible for this.
</para></formalpara>
<formalpara><title>Source code</title>
<para>
<ulink url="OscillatorPlayer.java.html">OscillatorPlayer.java</ulink>,
<ulink url="Oscillator.java.html">Oscillator.java</ulink>,
<ulink url="http://www.urbanophile.com/arenn/hacking/download.html">gnu.getopt.Getopt</ulink>
</para></formalpara>
*/
public class OscillatorPlayer
{
private static final int BUFFER_SIZE = 128000;
private static boolean DEBUG = false;
public static void main(String[] args)
throws IOException
{
byte[] abData;
AudioFormat audioFormat;
int nWaveformType = Oscillator.WAVEFORM_SINE;
float fSampleRate = 44100.0F;
float fSignalFrequency = 1000.0F;
float fAmplitude = 0.7F;
/*
* Parsing of command-line options takes place...
*/
Getopt g = new Getopt("AudioPlayer", args, "ht:r:f:a:D");
int c;
while ((c = g.getopt()) != -1)
{
switch (c)
{
case 'h':
printUsageAndExit();
case 't':
nWaveformType = getWaveformType(g.getOptarg());
break;
case 'r':
fSampleRate = Float.parseFloat(g.getOptarg());
break;
case 'f':
fSignalFrequency = Float.parseFloat(g.getOptarg());
break;
case 'a':
fAmplitude = Float.parseFloat(g.getOptarg());
break;
case 'D':
DEBUG = true;
break;
case '?':
printUsageAndExit();
default:
if (DEBUG) { out("getopt() returned " + c); }
break;
}
}
audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
fSampleRate, 16, 2, 4, fSampleRate, false);
AudioInputStream oscillator = new Oscillator(
nWaveformType,
fSignalFrequency,
fAmplitude,
audioFormat,
AudioSystem.NOT_SPECIFIED);
SourceDataLine line = null;
DataLine.Info info = new DataLine.Info(
SourceDataLine.class,
audioFormat);
try
{
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(audioFormat);
}
catch (LineUnavailableException e)
{
e.printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
line.start();
abData = new byte[BUFFER_SIZE];
while (true)
{
if (DEBUG) { out("OscillatorPlayer.main(): trying to read (bytes): " + abData.length); }
int nRead = oscillator.read(abData);
if (DEBUG) { out("OscillatorPlayer.main(): in loop, read (bytes): " + nRead); }
int nWritten = line.write(abData, 0, nRead);
if (DEBUG) { out("OscillatorPlayer.main(): written: " + nWritten); }
}
}
private static int getWaveformType(String strWaveformType)
{
int nWaveformType = Oscillator.WAVEFORM_SINE;
strWaveformType = strWaveformType.trim().toLowerCase();
if (strWaveformType.equals("sine"))
{
nWaveformType = Oscillator.WAVEFORM_SINE;
}
else if (strWaveformType.equals("square"))
{
nWaveformType = Oscillator.WAVEFORM_SQUARE;
}
else if (strWaveformType.equals("triangle"))
{
nWaveformType = Oscillator.WAVEFORM_TRIANGLE;
}
else if (strWaveformType.equals("sawtooth"))
{
nWaveformType = Oscillator.WAVEFORM_SAWTOOTH;
}
return nWaveformType;
}
private static void printUsageAndExit()
{
out("OscillatorPlayer: usage:");
out("\tjava OscillatorPlayer [-t <waveformtype>] [-f <signalfrequency>] [-r <samplerate>]");
System.exit(1);
}
private static void out(String strMessage)
{
System.out.println(strMessage);
}
}
/*** OscillatorPlayer.java ***/