Package org.codice.alliance.video.stream.mpegts.netty

Class BitReader

java.lang.Object

org.codice.alliance.video.stream.mpegts.netty.BitReader

public class BitReader
extends Object

The BitReader wraps a ByteBuf and provides bit-level tools for reading bits, skipping bits, and searching for MPEG-2 (h.262) start codes.

Constructor Summary

Constructors

Constructor	Description
BitReader(io.netty.buffer.ByteBuf byteBuf)

Method Summary

Modifier and Type	Method	Description
Optional<Long>	findStart()
boolean	isByteBoundary()
long	readableBits()	Get the number of bits that can be read.
byte	readBit()
long	readBits(int numberOfBits)
void	skipBits(int numberOfBits)
boolean	testBit()	Get the next bit's value, but do not actually consume the bit.

Methods inherited from class java.lang.Object

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

Constructor Details

BitReader

public BitReader(io.netty.buffer.ByteBuf byteBuf)

Parameters:

byteBuf - must be non-null

Method Details

testBit

public boolean testBit()
                throws EOFException

Get the next bit's value, but do not actually consume the bit.

Returns:

true if the next bit is 1, false if the next bit is 0

Throws:

EOFException

readableBits

public long readableBits()

Get the number of bits that can be read.

Returns:

number of readable bits

skipBits

public void skipBits(int numberOfBits)
              throws EOFException

Throws:

EOFException

readBit

public byte readBit()
             throws EOFException

Throws:

EOFException

readBits

public long readBits(int numberOfBits)
              throws EOFException

Throws:

EOFException

isByteBoundary

public boolean isByteBoundary()

findStart

public Optional<Long> findStart()