/*
* RTSystem.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 2002 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 org.tritonus.saol.engine;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.util.LinkedList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.tritonus.share.TDebug;
public class RTSystem
extends Thread
{
private static final boolean DEBUG = false;
private SystemOutput m_output;
private Map m_instrumentMap;
private boolean m_bRunning;
private int m_nTime;
private float m_fTimeStep;
private int m_nARate;
private int m_nKRate;
private int m_nAToKRateFactor;
private List m_activeInstruments;
private List m_scheduledInstruments;
private int m_nScheduledEndTime;
private float m_fFloatToIntTimeFactor;
private float m_fIntToFloatTimeFactor;
public RTSystem(SystemOutput output, Map instrumentMap)
{
m_output = output;
m_instrumentMap = instrumentMap;
// TODO:
setRates(44100, 100);
m_activeInstruments = new LinkedList();
m_scheduledInstruments = new LinkedList();
m_nScheduledEndTime = Integer.MAX_VALUE;
}
private void setRates(int nARate, int nKRate)
{
m_nARate = nARate;
m_nKRate = nKRate;
m_nAToKRateFactor = nARate / nKRate;
m_fTimeStep = 1.0F / (float) nKRate;
// following is only correct for 60 BPM
m_fFloatToIntTimeFactor = (float) nKRate;
m_fIntToFloatTimeFactor = m_fTimeStep;
}
public void run()
{
try
{
runImpl();
}
catch (IOException e)
{
e.printStackTrace();
}
}
private void runImpl()
throws IOException
{
m_bRunning = true;
m_nTime = 0;
while (m_bRunning)
{
doI();
doK();
for (int i = 0; i < m_nAToKRateFactor; i++)
{
doA();
}
advanceTime();
}
m_output.close();
}
private void doI()
{
if (DEBUG)
{
TDebug.out("doI()");
TDebug.out("time: " + getTime());
}
synchronized (m_scheduledInstruments)
{
Iterator scheduledInstruments = m_scheduledInstruments.iterator();
while (scheduledInstruments.hasNext())
{
if (DEBUG) { TDebug.out("scheduled instrument"); }
AbstractInstrument instrument = (AbstractInstrument) scheduledInstruments.next();
if (DEBUG) { TDebug.out("instrument start time: " + instrument.getStartTime()); }
if (getTime() >= instrument.getStartTime())
{
if (DEBUG) { TDebug.out("...activating"); }
scheduledInstruments.remove();
instrument.doIPass(this);
m_activeInstruments.add(instrument);
}
}
}
Iterator activeInstruments = m_activeInstruments.iterator();
while (activeInstruments.hasNext())
{
AbstractInstrument instrument = (AbstractInstrument) activeInstruments.next();
if (getTime() > instrument.getEndTime())
{
if (DEBUG) { TDebug.out("...DEactivating"); }
activeInstruments.remove();
}
}
if (getTime() >= getScheduledEndTime())
{
stopEngine();
}
}
private void doK()
{
Iterator activeInstruments = m_activeInstruments.iterator();
while (activeInstruments.hasNext())
{
AbstractInstrument instrument = (AbstractInstrument) activeInstruments.next();
instrument.doKPass(this);
}
}
private void doA()
throws IOException
{
// TDebug.out("doA()");
m_output.clear();
Iterator activeInstruments = m_activeInstruments.iterator();
while (activeInstruments.hasNext())
{
// TDebug.out("doA(): has active Instrument");
AbstractInstrument instrument = (AbstractInstrument) activeInstruments.next();
instrument.doAPass(this);
}
m_output.emit();
}
public void scheduleInstrument(String strInstrumentName, float fStartTime, float fDuration)
{
AbstractInstrument instrument = createInstrumentInstance(strInstrumentName);
int nStartTime = Math.round(fStartTime * m_fFloatToIntTimeFactor);
int nEndTime = Math.round((fStartTime + fDuration) * m_fFloatToIntTimeFactor);
instrument.setStartAndEndTime(nStartTime, nEndTime);
synchronized (m_scheduledInstruments)
{
m_scheduledInstruments.add(instrument);
if (DEBUG)
{
TDebug.out("adding instrument");
TDebug.out("start: " + nStartTime);
TDebug.out("end: " + nEndTime);
}
}
}
public void scheduleEnd(float fEndTime)
{
m_nScheduledEndTime = Math.round(fEndTime * m_fFloatToIntTimeFactor);
// TODO:
}
public void stopEngine()
{
m_bRunning = false;
}
private void advanceTime()
{
m_nTime++;
}
public int getTime()
{
return m_nTime;
}
public void output(float fValue)
{
m_output.output(fValue);
}
private int getScheduledEndTime()
{
return m_nScheduledEndTime;
}
private AbstractInstrument createInstrumentInstance(String strInstrumentName)
{
AbstractInstrument instrument = null;
Class instrumentClass = (Class) m_instrumentMap.get(strInstrumentName);
try
{
Constructor constructor = instrumentClass.getConstructor(new Class[]{RTSystem.class});
instrument = (AbstractInstrument) constructor.newInstance(new Object[]{this});
}
catch (Exception e)
{
e.printStackTrace();
}
return instrument;
}
}
/*** RTSystem.java ***/