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Diffstat (limited to 'src/java/com/jogamp/openal/ALContextKey.java')
| -rw-r--r-- | src/java/com/jogamp/openal/ALContextKey.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/java/com/jogamp/openal/ALContextKey.java b/src/java/com/jogamp/openal/ALContextKey.java new file mode 100644 index 0000000..9f3d4bf --- /dev/null +++ b/src/java/com/jogamp/openal/ALContextKey.java @@ -0,0 +1,88 @@ +/** + * 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; + final long o2_ptr = null != o2.alCtx ? o2.alCtx.getDirectBufferAddress() : 0; + return nativeAddress == o2_ptr; + } + @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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