com.google.zxing.common.reedsolomon
Class ReedSolomonDecoder

java.lang.Object
  extended by com.google.zxing.common.reedsolomon.ReedSolomonDecoder

public final class ReedSolomonDecoder
extends java.lang.Object

Implements Reed-Solomon decoding, as the name implies.

The algorithm will not be explained here, but the following references were helpful in creating this implementation:

Much credit is due to William Rucklidge since portions of this code are an indirect port of his C++ Reed-Solomon implementation.

Author:
Sean Owen, William Rucklidge, sanfordsquires

Constructor Summary
ReedSolomonDecoder(GenericGF field)
           
 
Method Summary
 void decode(int[] received, int twoS)
          Decodes given set of received codewords, which include both data and error-correction codewords.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ReedSolomonDecoder

public ReedSolomonDecoder(GenericGF field)
Method Detail

decode

public void decode(int[] received,
                   int twoS)
            throws ReedSolomonException

Decodes given set of received codewords, which include both data and error-correction codewords. Really, this means it uses Reed-Solomon to detect and correct errors, in-place, in the input.

Parameters:
received - data and error-correction codewords
twoS - number of error-correction codewords available
Throws:
ReedSolomonException - if decoding fails for any reason