Package org.web3d.vrml.export.compressors

Class BitUnpacker

java.lang.Object

org.web3d.vrml.export.compressors.BitUnpacker

public class BitUnpacker
extends Object

UnPack a stream of integers of variables bits from a packed form. Loosely copied from Johnathon Blow's "Packing Integers" article.

Version:

$Revision: 1.3 $

Author:

Alan Hudson

Constructor Summary

Constructors

Constructor	Description
BitUnpacker(byte[] buffer)	Construct a bit unpacker.

Method Summary

Modifier and Type	Method	Description
long	getNumBitsRemaining()	Get the number of bits remaining to be processed.
static void	main(String[] args)	Small test of unpack/pack routines.
void	reset(byte[] buffer)	Set this bit unpacker to a new value.
int	unpack(int num_bits)	Unpack a number of bits.

Methods inherited from class java.lang.Object

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

Constructor Details

BitUnpacker

public BitUnpacker(byte[] buffer)

Construct a bit unpacker.

Parameters:

buffer - The buffer to decode.

Method Details

unpack

public int unpack(int num_bits)

Unpack a number of bits.

Parameters:

num_bits -

Returns:

reset

public void reset(byte[] buffer)

Set this bit unpacker to a new value. Resets the position to the beginning.

Parameters:

buffer -

getNumBitsRemaining

public long getNumBitsRemaining()

Get the number of bits remaining to be processed.

Returns:

The number of bits left to process.

main

public static void main(String[] args)

Small test of unpack/pack routines.

Parameters:

args -