loci.formats.codec

Class BitBuffer

java.lang.Object

loci.formats.codec.BitBuffer

Deprecated.

Use loci.common.RandomAccessInputStream instead

public class BitBuffer
extends Object

A class for reading arbitrary numbers of bits from a byte array.

Author:

Eric Kjellman egkjellman at wisc.edu

Field Summary

Fields

Modifier and Type	Field and Description
private static int[]	BACK_MASK Deprecated. Various bitmasks for the 0000xxxx side of a byte.
private byte[]	byteBuffer Deprecated.
private int	currentBit Deprecated.
private int	currentByte Deprecated.
private int	eofByte Deprecated.
private boolean	eofFlag Deprecated.
private static int[]	FRONT_MASK Deprecated. Various bitmasks for the xxxx0000 side of a byte.
private static org.slf4j.Logger	LOGGER Deprecated.

Constructor Summary

Constructors

Constructor and Description
BitBuffer(byte[] byteBuffer) Deprecated. Default constructor.

Method Summary

Modifier and Type	Method and Description
int	getBits(int bitsToRead) Deprecated. Returns an int value representing the value of the bits read from the byte array, from the current position.
byte[]	getByteBuffer() Deprecated. Return the backing byte array.
boolean	isBitOnByteBoundary() Deprecated. Checks if the current position is on a byte boundary, that is the next bit in the byte array is the first bit in a byte.
static void	main(String[] args) Deprecated. Testing method.
void	skipBits(long bits) Deprecated. Skips a number of bits in the BitBuffer.

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

Deprecated.

BACK_MASK

private static final int[] BACK_MASK

Deprecated.

Various bitmasks for the 0000xxxx side of a byte.

FRONT_MASK

private static final int[] FRONT_MASK

Deprecated.

Various bitmasks for the xxxx0000 side of a byte.

byteBuffer

private byte[] byteBuffer

Deprecated.

currentByte

private int currentByte

Deprecated.

currentBit

private int currentBit

Deprecated.

eofByte

private int eofByte

Deprecated.

eofFlag

private boolean eofFlag

Deprecated.

Constructor Detail

BitBuffer

public BitBuffer(byte[] byteBuffer)

Deprecated.

Default constructor.

Method Detail

getByteBuffer

public byte[] getByteBuffer()

Deprecated.

Return the backing byte array.

skipBits

public void skipBits(long bits)

Deprecated.

Skips a number of bits in the BitBuffer.

Parameters:

bits - Number of bits to skip

getBits

public int getBits(int bitsToRead)

Deprecated.

Returns an int value representing the value of the bits read from the byte array, from the current position. Bits are extracted from the "left side" or high side of the byte.

The current position is modified by this call.

Bits are pushed into the int from the right, endianness is not considered by the method on its own. So, if 5 bits were read from the buffer "10101", the int would be the integer representation of 000...0010101 on the target machine.

In general, this also means the result will be positive unless a full 32 bits are read.

Requesting more than 32 bits is allowed, but only up to 32 bits worth of data will be returned (the last 32 bits read).

Parameters:

bitsToRead - the number of bits to read from the bit buffer

Returns:

the value of the bits read

isBitOnByteBoundary

public boolean isBitOnByteBoundary()

Deprecated.

Checks if the current position is on a byte boundary, that is the next bit in the byte array is the first bit in a byte.

Returns:

true if bit is on byte boundary, false otherwise.

main

public static void main(String[] args)

Deprecated.

Testing method.

Parameters:

args - Ignored.