DataBuffer.java

/* *******************************************
 * Copyright (c) 2011
 * HT srl,   All rights reserved.
 * Project      : RCS, AndroidService
 * File         : DataBuffer.java
 * Created      : Apr 9, 2011
 * Author		: zeno
 * *******************************************/

package com.android.dvci.util;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.IntBuffer;

/**
 * The Class DataBuffer.
 */
public class DataBuffer {

	/** The Constant TAG. */
	private static final String TAG = "DataReadBuffer"; //$NON-NLS-1$
	// ByteArrayInputStream input;
	// DataInputStream databuffer;
	/** The byte buffer. */
	ByteBuffer byteBuffer;


	/**
	 * Instantiates a new data buffer.
	 * 
	 * @param buffer
	 *            the buffer
	 * @param offset
	 *            the offset
	 * @param length
	 *            the length
	 */
	public DataBuffer(final byte[] buffer, final int offset, final int length) {
		
		byteBuffer = ByteBuffer.wrap(buffer);
		byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
		byteBuffer.position(offset);
	}

	/**
	 * Instantiates a new data buffer.
	 * 
	 * @param content
	 *            the content
	 */
	public DataBuffer(final byte[] content) {
		this(content, 0, content.length);
	}

	/**
	 * Read int.
	 * 
	 * @return the int
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 */
	public final int readInt() throws IOException {
		return byteBuffer.getInt();
	}

	/**
	 * Read long.
	 * 
	 * @return the long
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 */
	public final long readLong() throws IOException {
		return byteBuffer.getLong();
	}

	/**
	 * Read a byte array of the length of the buffer, and store it into it.
	 * 
	 * @param buffer
	 *            the buffer
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 */
	public final void read(final byte[] buffer) throws IOException {
		byteBuffer.get(buffer);
	}

	public double readDouble() {
		return byteBuffer.getDouble();
	}

	/**
	 * Write the data in the buffer.
	 * 
	 * @param data
	 *            the data
	 */
	public final void write(final byte[] data) {
		byteBuffer.put(data);
	}

	/**
	 * Write int.
	 * 
	 * @param value
	 *            the value
	 */
	public final void writeInt(final int value) {
		byteBuffer.putInt(value);
	}

	/**
	 * Write long.
	 * 
	 * @param value
	 *            the value
	 */
	public final void writeLong(final long value) {
		byteBuffer.putLong(value);
	}

	public final void writeDouble(final double value) {
		byteBuffer.putDouble(value);

	}

	public final void writeFloat(final float value) {
		byteBuffer.putFloat(value);
	}

	public final void writeByte(final byte value) {
		byteBuffer.put(value);
	}

	public final void writeShort(final short value) {
		byteBuffer.putShort(value);
	}

	/**
	 * Gets the position.
	 * 
	 * @return the position
	 */
	public final int getPosition() {
		return byteBuffer.position();
	}

	public IntBuffer asIntBuffer() {

		return byteBuffer.asIntBuffer();
	}
	
	

	
}