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-rw-r--r--awt/java/awt/image/ByteLookupTable.java140
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diff --git a/awt/java/awt/image/ByteLookupTable.java b/awt/java/awt/image/ByteLookupTable.java
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--- a/awt/java/awt/image/ByteLookupTable.java
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-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/**
- * @author Oleg V. Khaschansky
- * @version $Revision$
- *
- * @date: Oct 14, 2005
- */
-
-package java.awt.image;
-
-/**
- * The ByteLookupTable class provides functionality for lookup operations, and
- * is defined by an input byte array for bands or components of image and an
- * offset value. The offset value will be subtracted from the input values
- * before indexing the input arrays. The output of a lookup operation is
- * represented as an array of unsigned bytes.
- *
- * @since Android 1.0
- */
-public class ByteLookupTable extends LookupTable {
-
- /**
- * The data.
- */
- private byte data[][];
-
- /**
- * Instantiates a new ByteLookupTable with the specified offset value and
- * the specified byte array which represents the lookup table for all bands.
- *
- * @param offset
- * the offset value.
- * @param data
- * the data array of bytes.
- */
- public ByteLookupTable(int offset, byte[] data) {
- super(offset, 1);
- if (data.length < 1)
- throw new IllegalArgumentException("Length of data should not be less then one");
- this.data = new byte[1][data.length];
- // The data array stored as a reference
- this.data[0] = data;
- }
-
- /**
- * Instantiates a new ByteLookupTable with the specified offset value and
- * the specified byte array of arrays which represents the lookup table for
- * each band.
- *
- * @param offset
- * the offset value.
- * @param data
- * the data array of bytes array for each band.
- */
- public ByteLookupTable(int offset, byte[][] data) {
- super(offset, data.length);
- this.data = new byte[data.length][data[0].length];
- for (int i = 0; i < data.length; i++) {
- // The data array for each band stored as a reference
- this.data[i] = data[i];
- }
- }
-
- /**
- * Gets the lookup table of this ByteLookupTable object. If this
- * ByteLookupTable object has one byte array for all bands, the returned
- * array length is one.
- *
- * @return the lookup table of this ByteLookupTable object.
- */
- public final byte[][] getTable() {
- // Returns data by reference
- return data;
- }
-
- @Override
- public int[] lookupPixel(int[] src, int[] dst) {
- if (dst == null) {
- dst = new int[src.length];
- }
-
- int offset = getOffset();
- if (getNumComponents() == 1) {
- for (int i = 0; i < src.length; i++) {
- dst[i] = data[0][src[i] - offset];
- }
- } else {
- for (int i = 0; i < getNumComponents(); i++) {
- dst[i] = data[i][src[i] - offset];
- }
- }
-
- return dst;
- }
-
- /**
- * Returns a byte array which contains samples of the specified pixel which
- * is translated with the lookup table of this ByteLookupTable object. The
- * resulted array is stored to the dst array.
- *
- * @param src
- * the source array.
- * @param dst
- * the destination array where the result can be stored.
- * @return the byte array of translated samples of a pixel.
- */
- public byte[] lookupPixel(byte[] src, byte[] dst) {
- if (dst == null) {
- dst = new byte[src.length];
- }
-
- int offset = getOffset();
- if (getNumComponents() == 1) {
- for (int i = 0; i < src.length; i++) {
- dst[i] = data[0][src[i] - offset];
- }
- } else {
- for (int i = 0; i < getNumComponents(); i++) {
- dst[i] = data[i][src[i] - offset];
- }
- }
-
- return dst;
- }
-}