src.org.tukaani.xz.BCJOptions Maven / Gradle / Ivy
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/*
* BCJOptions
*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
package org.tukaani.xz;
import java.io.InputStream;
import java.io.IOException;
abstract class BCJOptions extends FilterOptions {
private final int alignment;
int startOffset = 0;
BCJOptions(int alignment) {
this.alignment = alignment;
}
/**
* Sets the start offset for the address conversions.
* Normally this is useless so you shouldn't use this function.
* The default value is 0.
*/
public void setStartOffset(int startOffset)
throws UnsupportedOptionsException {
if ((startOffset & (alignment - 1)) != 0)
throw new UnsupportedOptionsException(
"Start offset must be a multiple of " + alignment);
this.startOffset = startOffset;
}
/**
* Gets the start offset.
*/
public int getStartOffset() {
return startOffset;
}
public int getEncoderMemoryUsage() {
return SimpleOutputStream.getMemoryUsage();
}
public int getDecoderMemoryUsage() {
return SimpleInputStream.getMemoryUsage();
}
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
assert false;
throw new RuntimeException();
}
}
}