org.jcodec.codecs.common.biari

Class MDecoder

java.lang.Object

org.jcodec.codecs.common.biari.MDecoder

public class MDecoder
extends Object

This class is part of JCodec ( www.jcodec.org ) This software is distributed under FreeBSD License H264 CABAC M-Coder ( decoder module )

Author:

The JCodec project

Constructor Summary

Constructors

Constructor and Description
MDecoder(ByteBuffer _in, int[][] cm)

Method Summary

Modifier and Type	Method and Description
int	decodeBin(int m) Decodes one bin from arithmetice code word
int	decodeBinBypass() Special decoding process for symbols with uniform distribution
int	decodeFinalBin() Special decoding process for 'end of slice' flag.
protected void	initCodeRegister() Initializes code register.
protected void	readOneByte()

Methods inherited from class java.lang.Object

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

Constructor Detail

MDecoder

public MDecoder(ByteBuffer _in,
                int[][] cm)

Method Detail

initCodeRegister

protected void initCodeRegister()

Initializes code register. Loads 9 bits from the stream into working area of code register ( bits 8 - 16) leaving 7 bits in the pending area of code register (bits 0 - 7)

Throws:

IOException

readOneByte

protected void readOneByte()

decodeBin

public int decodeBin(int m)

Decodes one bin from arithmetice code word

Parameters:

cm -

Returns:

Throws:

IOException

decodeFinalBin

public int decodeFinalBin()

Special decoding process for 'end of slice' flag. Uses probability state 63.

Parameters:

cm -

Returns:

Throws:

IOException

decodeBinBypass

public int decodeBinBypass()

Special decoding process for symbols with uniform distribution

Returns:

Throws:

IOException