org.tritonus.share.sampled.mixer.TMixerProvider Maven / Gradle / Ivy
/*
* TMixerProvider.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 1999 - 2004 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.share.sampled.mixer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.spi.MixerProvider;
import org.tritonus.share.TDebug;
public abstract class TMixerProvider
extends MixerProvider
{
private static final Mixer.Info[] EMPTY_MIXER_INFO_ARRAY = new Mixer.Info[0];
private static Map sm_mixerProviderStructs = new HashMap();
private boolean m_bDisabled = false;
public TMixerProvider()
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.(): begin"); }
// currently does nothing
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.(): end"); }
}
/*
Override this method if you want a thread-safe static initializaiton.
*/
protected void staticInit()
{
}
private MixerProviderStruct getMixerProviderStruct()
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerProviderStruct(): begin"); }
Class cls = this.getClass();
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerProviderStruct(): called from " + cls); }
// Thread.dumpStack();
synchronized (TMixerProvider.class)
{
MixerProviderStruct struct = sm_mixerProviderStructs.get(cls);
if (struct == null)
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerProviderStruct(): creating new MixerProviderStruct for " + cls); }
struct = new MixerProviderStruct();
sm_mixerProviderStructs.put(cls, struct);
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerProviderStruct(): end"); }
return struct;
}
}
protected void disable()
{
if (TDebug.TraceMixerProvider) { TDebug.out("disabling " + getClass().getName()); }
m_bDisabled = true;
}
protected boolean isDisabled()
{
return m_bDisabled;
}
protected void addMixer(Mixer mixer)
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.addMixer(): begin"); }
MixerProviderStruct struct = getMixerProviderStruct();
synchronized (struct)
{
struct.m_mixers.add(mixer);
if (struct.m_defaultMixer == null)
{
struct.m_defaultMixer = mixer;
}
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.addMixer(): end"); }
}
protected void removeMixer(Mixer mixer)
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.removeMixer(): begin"); }
MixerProviderStruct struct = getMixerProviderStruct();
synchronized (struct)
{
struct.m_mixers.remove(mixer);
// TODO: should search for another mixer
if (struct.m_defaultMixer == mixer)
{
struct.m_defaultMixer = null;
}
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.removeMixer(): end"); }
}
// $$mp 2003/01/11: TODO: this implementation may become obsolete once the overridden method in spi.MixerProvider is implemented in a way documented officially.
public boolean isMixerSupported(Mixer.Info info)
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.isMixerSupported(): begin"); }
boolean bIsSupported = false;
Mixer.Info[] infos = getMixerInfo();
for (int i = 0; i < infos.length; i++)
{
if (infos[i].equals(info))
{
bIsSupported = true;
break;
}
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.isMixerSupported(): end"); }
return bIsSupported;
}
/**
*/
public Mixer getMixer(Mixer.Info info)
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixer(): begin"); }
MixerProviderStruct struct = getMixerProviderStruct();
Mixer mixerResult = null;
synchronized (struct)
{
if (info == null)
{
mixerResult = struct.m_defaultMixer;
}
else
{
Iterator mixers = struct.m_mixers.iterator();
while (mixers.hasNext())
{
Mixer mixer = (Mixer) mixers.next();
if (mixer.getMixerInfo().equals(info))
{
mixerResult = mixer;
break;
}
}
}
}
if (mixerResult == null)
{
throw new IllegalArgumentException("no mixer available for " + info);
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixer(): end"); }
return mixerResult;
}
public Mixer.Info[] getMixerInfo()
{
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerInfo(): begin"); }
Set mixerInfos = new HashSet();
MixerProviderStruct struct = getMixerProviderStruct();
synchronized (struct)
{
Iterator mixers = struct.m_mixers.iterator();
while (mixers.hasNext())
{
Mixer mixer = mixers.next();
mixerInfos.add(mixer.getMixerInfo());
}
}
if (TDebug.TraceMixerProvider) { TDebug.out("TMixerProvider.getMixerInfo(): end"); }
return mixerInfos.toArray(EMPTY_MIXER_INFO_ARRAY);
}
private class MixerProviderStruct
{
public List m_mixers;
public Mixer m_defaultMixer;
public MixerProviderStruct()
{
m_mixers = new ArrayList();
m_defaultMixer = null;
}
}
}
/*** TMixerProvider.java ***/