184 lines
5.1 KiB
Java
184 lines
5.1 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 Igor V. Stolyarov
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* @version $Revision$
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*/
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package java.awt.image;
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/**
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* The Class DataBufferByte is the subclass of DataBuffer for the case where the
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* underlying data is of type byte.
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*
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* @since Android 1.0
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*/
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public final class DataBufferByte extends DataBuffer {
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/**
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* The data.
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*/
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byte data[][];
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/**
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* Instantiates a new data buffer of type unsigned short.
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*
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* @param dataArrays
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* the data arrays to copy the data from.
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* @param size
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* the length (number of elements) to use from the data arrays.
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* @param offsets
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* the starting indices for reading the data from the internal
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* data arrays.
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*/
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public DataBufferByte(byte dataArrays[][], int size, int offsets[]) {
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super(TYPE_BYTE, size, dataArrays.length, offsets);
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data = dataArrays.clone();
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}
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/**
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* Instantiates a new data buffer of type unsigned short.
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*
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* @param dataArrays
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* the data arrays to copy the data from.
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* @param size
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* the length (number of elements) to use from the data arrays.
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*/
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public DataBufferByte(byte dataArrays[][], int size) {
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super(TYPE_BYTE, size, dataArrays.length);
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data = dataArrays.clone();
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}
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/**
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* Instantiates a new data buffer of type unsigned short with a single
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* underlying array of data.
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*
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* @param dataArray
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* the data array to copy the data from.
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* @param size
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* the length (number of elements) to use.
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* @param offset
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* the starting index to use when reading the data.
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*/
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public DataBufferByte(byte dataArray[], int size, int offset) {
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super(TYPE_BYTE, size, 1, offset);
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data = new byte[1][];
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data[0] = dataArray;
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}
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/**
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* Instantiates a new data buffer of type unsigned short with a single
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* underlying array of data starting at index 0.
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*
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* @param dataArray
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* the data array to copy the data from.
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* @param size
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* the length (number of elements) to use.
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*/
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public DataBufferByte(byte dataArray[], int size) {
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super(TYPE_BYTE, size);
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data = new byte[1][];
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data[0] = dataArray;
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}
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/**
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* Instantiates a new empty data buffer of type unsigned short with offsets
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* equal to zero.
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*
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* @param size
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* the length (number of elements) to use from the data arrays.
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* @param numBanks
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* the number of data arrays to create.
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*/
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public DataBufferByte(int size, int numBanks) {
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super(TYPE_BYTE, size, numBanks);
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data = new byte[numBanks][];
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int i = 0;
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while (i < numBanks) {
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data[i++] = new byte[size];
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}
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}
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/**
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* Instantiates a new empty data buffer of type unsigned short with a single
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* underlying array of data starting at index 0.
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*
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* @param size
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* the length (number of elements) to use.
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*/
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public DataBufferByte(int size) {
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super(TYPE_BYTE, size);
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data = new byte[1][];
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data[0] = new byte[size];
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}
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@Override
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public void setElem(int bank, int i, int val) {
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data[bank][offsets[bank] + i] = (byte)val;
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notifyChanged();
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}
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@Override
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public void setElem(int i, int val) {
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data[0][offset + i] = (byte)val;
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notifyChanged();
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}
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@Override
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public int getElem(int bank, int i) {
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return (data[bank][offsets[bank] + i]) & 0xff;
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}
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/**
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* Gets the data of the specified internal data array.
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*
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* @param bank
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* the index of the desired data array.
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* @return the data.
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*/
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public byte[] getData(int bank) {
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notifyTaken();
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return data[bank];
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}
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@Override
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public int getElem(int i) {
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return (data[0][offset + i]) & 0xff;
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}
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/**
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* Gets the bank data.
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*
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* @return the bank data.
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*/
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public byte[][] getBankData() {
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notifyTaken();
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return data.clone();
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}
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/**
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* Gets the data of the first data array.
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*
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* @return the data.
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*/
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public byte[] getData() {
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notifyTaken();
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return data[0];
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}
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}
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