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Core library functionality concerned with general programming problems rather than multimedia specific functionality. Includes I/O utilities, randomisation, hashing and type conversion.

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/*
	AUTOMATICALLY GENERATED BY jTemp FROM
	/Users/jsh2/Work/openimaj/target/checkout/core/core/src/main/jtemp/org/openimaj/data/#T#ArrayBackedDataSource.jtemp
*/
/**
 * Copyright (c) 2011, The University of Southampton and the individual contributors.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *   * 	Redistributions of source code must retain the above copyright notice,
 * 	this list of conditions and the following disclaimer.
 *
 *   *	Redistributions in binary form must reproduce the above copyright notice,
 * 	this list of conditions and the following disclaimer in the documentation
 * 	and/or other materials provided with the distribution.
 *
 *   *	Neither the name of the University of Southampton nor the names of its
 * 	contributors may be used to endorse or promote products derived from this
 * 	software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.openimaj.data;

import java.util.Iterator;
import java.util.Random;

import org.openimaj.util.array.ArrayIterator;

/**
 * A {@link DataSource} backed by a 2D array of bytes.
 * 
 * @author Jonathon Hare ([email protected])
 *
 */
public class ByteArrayBackedDataSource implements DataSource {
	protected byte[][] data;
	protected Random rng;
	
	/**
	 * Construct with data
	 * @param data the data
	 */
	public ByteArrayBackedDataSource(byte[][] data) {
		this.data = data;
		this.rng = new Random();
	}
	
	/**
	 * Construct with data and a random generator for random sampling
	 * @param data the data
	 * @param rng the random generator
	 */
	public ByteArrayBackedDataSource(byte[][] data, Random rng) {
		this.data = data;
		this.rng = rng;
	}

	@Override
	public final void getData(int startRow, int stopRow, byte[][] output) {
		for (int i=startRow, j=0; i iterator() {
		return new ArrayIterator(data);
	}
	
	@Override
	public byte[][] createTemporaryArray(int size) {
		return new byte[size][data[0].length];
	}
}