/*
* DataLine.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 1999 by Matthias Pfisterer
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
|<--- this code is formatted to fit into 80 columns --->|
*/
package javax.sound.sampled;
import java.util.List;
import java.util.Arrays;
import java.util.Iterator;
import org.tritonus.share.TDebug;
import org.tritonus.share.sampled.AudioFormats;
public interface DataLine
extends Line
{
public void drain();
public void flush();
public void start();
public void stop();
public boolean isRunning();
public boolean isActive();
public AudioFormat getFormat();
public int getBufferSize();
public int available();
public int getFramePosition();
public long getMicrosecondPosition();
public float getLevel();
public static class Info
extends Line.Info
{
private AudioFormat[] EMPTY_AUDIO_FORMAT_ARRAY = new AudioFormat[0];
private List<AudioFormat> m_audioFormats;
private int m_nMinBufferSize;
private int m_nMaxBufferSize;
public Info(Class lineClass,
AudioFormat[] aAudioFormats,
int nMinBufferSize,
int nMaxBufferSize)
{
super(lineClass);
m_audioFormats = Arrays.asList(aAudioFormats);
m_nMinBufferSize = nMinBufferSize;
m_nMaxBufferSize = nMaxBufferSize;
}
public Info(Class lineClass,
AudioFormat audioFormat,
int nBufferSize)
{
this(lineClass,
new AudioFormat[]{audioFormat},
nBufferSize,
nBufferSize);
}
public Info(Class lineClass,
AudioFormat audioFormat)
{
this(lineClass,
audioFormat,
AudioSystem.NOT_SPECIFIED);
}
public AudioFormat[] getFormats()
{
return m_audioFormats.toArray(EMPTY_AUDIO_FORMAT_ARRAY);
}
public boolean isFormatSupported(AudioFormat audioFormat)
{
Iterator<AudioFormat> formats = m_audioFormats.iterator();
while (formats.hasNext())
{
AudioFormat format = formats.next();
if (AudioFormats.matches(format, audioFormat))
{
return true;
}
}
return false;
}
public int getMinBufferSize()
{
return m_nMinBufferSize;
}
public int getMaxBufferSize()
{
return m_nMaxBufferSize;
}
public boolean matches(Line.Info info)
{
if (TDebug.TraceDataLine)
{
TDebug.out(">DataLine.Info.matches(): called");
TDebug.out("DataLine.Info.matches(): own info: " + this.toString());
TDebug.out("DataLine.Info.matches(): test info: " + info.toString());
}
if (!super.matches(info))
{
if (TDebug.TraceDataLine) TDebug.out("<DataLine.Info.matches(): super.matches() does not match()");
return false;
}
if (! (info instanceof DataLine.Info))
{
return false;
}
DataLine.Info dataLineInfo = (DataLine.Info) info;
// TODO: check against documentation !!
// $$fb2000-12-02: handle NOT_SPECIFIED
if ( (getMinBufferSize()!=AudioSystem.NOT_SPECIFIED
&& dataLineInfo.getMinBufferSize()!=AudioSystem.NOT_SPECIFIED
&& getMinBufferSize() < dataLineInfo.getMinBufferSize()) ||
(getMaxBufferSize()!=AudioSystem.NOT_SPECIFIED
&& dataLineInfo.getMaxBufferSize()!=AudioSystem.NOT_SPECIFIED
&& getMaxBufferSize() > dataLineInfo.getMaxBufferSize()) )
{
if (TDebug.TraceDataLine) TDebug.out("<DataLine.Info.matches(): buffer sizes do not match");
return false;
}
// $$fb2000-12-02: it's the other way round !!!
// all of this classes formats must match at least one of
// dataLineInfo's formats.
Iterator<AudioFormat> formats = m_audioFormats.iterator();
while (formats.hasNext())
{
AudioFormat format = formats.next();
if (TDebug.TraceDataLine) TDebug.out("checking if supported: " + format);
if (!dataLineInfo.isFormatSupported(format))
{
if (TDebug.TraceDataLine) TDebug.out("< format doesn't match");
return false;
}
}
/*
AudioFormat[] infoFormats = dataLineInfo.getFormats();
for (int i = 0; i < infoFormats.length; i++)
{
if (TDebug.TraceDataLine)
{
TDebug.out("checking if supported: " + infoFormats[i]);
}
if (!isFormatSupported(infoFormats[i]))
{
if (TDebug.TraceDataLine)
{
TDebug.out("< formats do not match");
}
return false;
}
}
*/
if (TDebug.TraceDataLine)
{
TDebug.out("< matches: true");
}
return true;
}
public String toString()
{
AudioFormat[] aFormats = getFormats();
String strFormats = "formats:\n";
for (int i = 0; i < aFormats.length; i++)
{
strFormats += aFormats[i].toString() + "\n";
}
return super.toString() + strFormats + "minBufferSize=" + getMinBufferSize() + " maxBufferSize=" + getMaxBufferSize();
}
}
}
/*** DataLine.java ***/