/*
* Copyright (c) 2002-2008 LWJGL Project
* 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.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.lwjgl.openal;
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
/**
* The ALCcontext class represents a context opened in OpenAL space.
*
* All operations of the AL core API affect a current AL context. Within the scope of AL,
* the ALC is implied - it is not visible as a handle or function parameter. Only one AL
* Context per process can be current at a time. Applications maintaining multiple AL
* Contexts, whether threaded or not, have to set the current context accordingly.
* Applications can have multiple threads that share one more or contexts. In other words,
* AL and ALC are threadsafe.
*
* @author Brian Matzon <brian@matzon.dk>
* @version $Revision: 3418 $
* $Id: ALCcontext.java 3418 2010-09-28 21:11:35Z spasi $
*/
public final class ALCcontext {
/** Address of actual context */
final long context;
/** Whether this context is valid */
private boolean valid;
/**
* Creates a new instance of ALCcontext
*
* @param context address of actual context
*/
ALCcontext(long context) {
this.context = context;
this.valid = true;
}
/*
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object context) {
if(context instanceof ALCcontext) {
return ((ALCcontext)context).context == this.context;
}
return super.equals(context);
}
/**
* Creates an attribute list in a ByteBuffer
* @param contextFrequency Frequency to add
* @param contextRefresh Refresh rate to add
* @param contextSynchronized Whether to synchronize the context
* @return
*/
static IntBuffer createAttributeList(int contextFrequency, int contextRefresh, int contextSynchronized) {
IntBuffer attribList = BufferUtils.createIntBuffer(7);
attribList.put(ALC10.ALC_FREQUENCY);
attribList.put(contextFrequency);
attribList.put(ALC10.ALC_REFRESH);
attribList.put(contextRefresh);
attribList.put(ALC10.ALC_SYNC);
attribList.put(contextSynchronized);
attribList.put(0); //terminating int
return attribList;
}
/**
* Marks this context as invalid
*
*/
void setInvalid() {
valid = false;
}
/**
* @return true if this context is still valid
*/
public boolean isValid() {
return valid;
}
}