rice.p2p.glacier
Class ErasureCodec

java.lang.Object
  rice.p2p.glacier.ErasureCodec

public class ErasureCodec

extends java.lang.Object

DESCRIBE THE CLASS

Version:

$Id: ErasureCodec.java 2808 2005-11-22 14:38:49Z jeffh $

Author:

ahae

Field Summary

protected int	numFragments
protected int	numSurvivors

Constructor Summary

ErasureCodec(int _numFragments, int _numSurvivors, Environment env)
Constructor for ErasureCodec.

Method Summary

java.io.Serializable	decode(Fragment[] frag)
protected void	decodeChunk(int[] buffer, int nExtra, int[] RowInd, boolean[] haveFragment, long[][] InvMat, int[] ColInd)
void	dump(byte[] data)
Fragment[]	encode(byte[] bytes, boolean[] generateFragment)
protected void	encodeChunk(int[] buffer) Input: buffer of size ; first words contain message, rest is zeroes Output: buffer contains fragments
Fragment[]	encodeObject(java.io.Serializable obj, boolean[] generateFragment)
protected void	initElt()
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

numFragments

protected int numFragments

numSurvivors

protected int numSurvivors

Constructor Detail

ErasureCodec

public ErasureCodec(int _numFragments,
                    int _numSurvivors,
                    Environment env)

Constructor for ErasureCodec.

Parameters:

_numFragments - DESCRIBE THE PARAMETER

_numSurvivors - DESCRIBE THE PARAMETER

Method Detail

dump

public void dump(byte[] data)

encodeObject

public Fragment[] encodeObject(java.io.Serializable obj,
                               boolean[] generateFragment)

encodeChunk

protected void encodeChunk(int[] buffer)

Input: buffer of size ; first words contain message, rest is zeroes Output: buffer contains fragments

encode

public Fragment[] encode(byte[] bytes,
                         boolean[] generateFragment)

decodeChunk

protected void decodeChunk(int[] buffer,
                           int nExtra,
                           int[] RowInd,
                           boolean[] haveFragment,
                           long[][] InvMat,
                           int[] ColInd)

decode

public java.io.Serializable decode(Fragment[] frag)

initElt

protected void initElt()

main

public static void main(java.lang.String[] args)