How to use

it.unimi.dsi.compression.HuffmanCodec$DecoderInputs

constructor

return new DecoderInputs(shortestCodeWord, length, symbol);

return new DecoderInputs(shortestCodeWord, length, symbol);

/**
 * This verifies that a code book constructed from a given set of
 * frequencies may be reconstructed from the cord word bit lengths, given in
 * a non-decreasing order, together with the symbols in a correlated array.
 * 
 * @param frequency
 */
public void doRoundTripTest(final int[] frequency) {
  
  final DecoderInputs decoderInputs = new DecoderInputs();
  
  final HuffmanCodec codec = new HuffmanCodec(frequency, decoderInputs);
  if (log.isDebugEnabled()) {
    log.debug(printCodeBook(codec.codeWords()) + "\nlength[]="
        + Arrays.toString(decoderInputs.getLengths()) + "\nsymbol[]="
        + Arrays.toString(decoderInputs.getSymbols()));
  }
  
  final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
      decoderInputs.getLengths(), decoderInputs.getSymbols());
  for (int i = 0; i < frequency.length; i++) {
    final BooleanIterator coded = codec.coder().encode(i/*symbol*/);
    
    assertEquals(i, actualDecoder.decode(coded));
    
  }
}

decoderInputs = new DecoderInputs();

decoderInputs = new DecoderInputs();

final DecoderInputs decoderInputs = new DecoderInputs();

final DecoderInputs decoderInputs = new DecoderInputs();

/**
 * This verifies that a code book constructed from a given set of
 * frequencies may be reconstructed from the cord word bit lengths, given in
 * a non-decreasing order, together with the symbols in a correlated array.
 * 
 * @param frequency
 */
public void doRoundTripTest(final int[] frequency) {
  
  final DecoderInputs decoderInputs = new DecoderInputs();
  
  final HuffmanCodec codec = new HuffmanCodec(frequency, decoderInputs);
  if (log.isDebugEnabled()) {
    log.debug(printCodeBook(codec.codeWords()) + "\nlength[]="
        + Arrays.toString(decoderInputs.getLengths()) + "\nsymbol[]="
        + Arrays.toString(decoderInputs.getSymbols()));
  }
  
  final CanonicalFast64CodeWordDecoder actualDecoder = new CanonicalFast64CodeWordDecoder(
      decoderInputs.getLengths(), decoderInputs.getSymbols());
  for (int i = 0; i < frequency.length; i++) {
    final BooleanIterator coded = codec.coder().encode(i/*symbol*/);
    
    assertEquals(i, actualDecoder.decode(coded));
    
  }
}

/** Creates a new Huffman codec using the given vector of frequencies.
 * 
 * @param frequency a vector of nonnnegative frequencies.
 */
public HuffmanCodec( final int[] frequency ) {

  this(frequency, new DecoderInputs());
  
}

/** Creates a new Huffman codec using the given vector of frequencies.
 * 
 * @param frequency a vector of nonnnegative frequencies.
 */
public HuffmanCodec( final int[] frequency ) {

  this(frequency, new DecoderInputs());
  
}