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/*
* ====================================================================
* Copyright (c) 2000-2008 SyntEvo GmbH, [email protected]
* All rights reserved.
*
* This software is licensed as described in the file SEQUENCE-LICENSE,
* which you should have received as part of this distribution. Use is
* subject to license terms.
* ====================================================================
*/
package de.regnis.q.sequence.media;
import de.regnis.q.sequence.core.*;
/**
* @author Marc Strapetz
*/
public class QSequenceDiscardingMedia implements QSequenceMedia, QSequenceMediaIndexTransformer {
// Fields =================================================================
private final QSequenceIntMedia media;
private final QSequenceCanceller canceller;
private final QSequenceDiscardingMediaBlock leftBlock;
private final QSequenceDiscardingMediaBlock rightBlock;
private final int[] undiscardedLeftSymbols;
private final int[] undiscardedRightSymbols;
private final int undiscardedLeftSymbolCount;
private final int undiscardedRightSymbolCount;
// Setup ==================================================================
public QSequenceDiscardingMedia(QSequenceIntMedia media, QSequenceDiscardingMediaConfusionDetector confusionDetector, QSequenceCanceller canceller) {
this.media = media;
this.canceller = canceller;
this.leftBlock = new QSequenceDiscardingMediaLeftBlock(this.media);
this.rightBlock = new QSequenceDiscardingMediaRightBlock(this.media);
leftBlock.init(rightBlock, confusionDetector);
rightBlock.init(leftBlock, confusionDetector);
undiscardedLeftSymbols = leftBlock.getUndiscardedSymbols();
undiscardedLeftSymbolCount = leftBlock.getUndiscardedSymbolCount();
undiscardedRightSymbols = rightBlock.getUndiscardedSymbols();
undiscardedRightSymbolCount = rightBlock.getUndiscardedSymbolCount();
}
// Implemented ============================================================
public int getLeftLength() {
return undiscardedLeftSymbolCount;
}
public int getRightLength() {
return undiscardedRightSymbolCount;
}
public boolean equals(int leftIndex, int rightIndex) throws QSequenceCancelledException {
canceller.checkCancelled();
return undiscardedLeftSymbols[leftIndex] == undiscardedRightSymbols[rightIndex];
}
public int getMediaLeftIndex(int index) {
return leftBlock.getMediaIndex(index);
}
public int getMediaRightIndex(int index) {
return rightBlock.getMediaIndex(index);
}
public int getMediaLeftLength() {
return media.getLeftLength();
}
public int getMediaRightLength() {
return media.getRightLength();
}
}
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