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/**
* Copyright 2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. 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 JogAmp Community ``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 JogAmp Community 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.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.openal;
import com.jogamp.common.util.HashUtil;
/**
* Implementing {@link #equals(Object)} based on the native address
* and {@link #hashCode()} on the {@link HashUtil#getAddrHash32_EqualDist(long)} with same native address.
* <p>
* Both, the native address and its hash code values are cached.
* </p>
*/
public class ALContextKey {
static final ALC alc = ALFactory.getALC();
private final ALCcontext alCtx;
private final long nativeAddress;
private final int hashCodeValue;
/** Creates an instance using the current context as key. */
public ALContextKey( final Object userParam ) {
if( null == userParam ) {
throw new IllegalArgumentException("userParam null");
}
if( !(userParam instanceof ALCcontext) ) {
throw new IllegalArgumentException("userParam not ALCcontext but "+userParam.getClass());
}
// alCtx = alc.alcGetCurrentContext();
alCtx = (ALCcontext) userParam;
if( null != alCtx ) {
nativeAddress = alCtx.getDirectBufferAddress();
hashCodeValue = HashUtil.getAddrHash32_EqualDist(nativeAddress);
} else {
nativeAddress = 0;
hashCodeValue = 0;
}
}
public ALCcontext getContext() { return alCtx; }
@Override
public boolean equals(final Object o) {
if( this == o ) {
return true;
}
if( !(o instanceof ALContextKey) ) {
return false;
}
final ALContextKey o2 = (ALContextKey)o;
return nativeAddress == o2.nativeAddress;
}
@Override
public int hashCode() {
return hashCodeValue;
}
@Override
public String toString() {
return "ALContextKey[alCtx hash 0x"+Integer.toHexString(System.identityHashCode(alCtx))+
", native[ptr 0x"+Long.toHexString(nativeAddress)+", hash 0x"+Integer.toHexString(hashCodeValue)+"]]";
}
}
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