102 lines
3.1 KiB
Java
102 lines
3.1 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @author Oleg V. Khaschansky
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* @version $Revision$
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*
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* @date: Oct 14, 2005
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*/
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package java.awt.image;
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import org.apache.harmony.awt.internal.nls.Messages;
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/**
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* This abstract LookupTable class represents lookup table which is defined with
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* the number of components and offset value. ByteLookupTable and
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* ShortLookupTable classes are subclasses of LookupTable which contains byte
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* and short data tables as an input arrays for bands or components of image.
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*
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* @since Android 1.0
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*/
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public abstract class LookupTable {
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/**
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* The offset.
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*/
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private int offset;
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/**
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* The num components.
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*/
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private int numComponents;
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/**
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* Instantiates a new LookupTable with the specified offset value and number
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* of components.
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*
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* @param offset
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* the offset value.
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* @param numComponents
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* the number of components.
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*/
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protected LookupTable(int offset, int numComponents) {
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if (offset < 0) {
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// awt.232=Offset should be not less than zero
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throw new IllegalArgumentException(Messages.getString("awt.232")); //$NON-NLS-1$
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}
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if (numComponents < 1) {
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// awt.233=Number of components should be positive
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throw new IllegalArgumentException(Messages.getString("awt.233")); //$NON-NLS-1$
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}
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this.offset = offset;
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this.numComponents = numComponents;
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}
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/**
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* Gets the offset value of this Lookup table.
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*
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* @return the offset value of this Lookup table.
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*/
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public int getOffset() {
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return offset;
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}
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/**
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* Gets the number of components of this Lookup table.
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*
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* @return the number components of this Lookup table.
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*/
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public int getNumComponents() {
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return numComponents;
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}
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/**
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* Returns an integer array which contains samples of the specified pixel which
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* is translated with the lookup table of this LookupTable. The resulted
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* array is stored to the dst array.
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*
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* @param src
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* the source array.
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* @param dst
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* the destination array where the result can be stored.
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* @return the integer array of translated samples of a pixel.
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*/
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public abstract int[] lookupPixel(int[] src, int[] dst);
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}
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