Dirac - A Video Codec

Created by the British Broadcasting Corporation.


Public Member Functions | Private Member Functions | Private Attributes
dirac::PredModeCodec Class Reference

Codes and decodes the prediction modes. More...

#include <mv_codec.h>

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List of all members.

Public Member Functions

 PredModeCodec (ByteIO *p_byteio, size_t number_of_contexts, const int num_refs)
 Constructor.
void InitContexts ()
 Initialises the contexts.
- Public Member Functions inherited from dirac::ArithCodec< MvData >
 ArithCodec (ByteIO *p_byteio, size_t number_of_contexts)
 Constructor for encoding.
virtual ~ArithCodec ()
 Destructor.
int Compress (MvData &in_data)
 Compresses the input and returns the number of bits written.
void Decompress (MvData &out_data, const int num_bytes)
 Decompresses the bitstream and writes into the output.
- Public Member Functions inherited from dirac::ArithCodecBase
 ArithCodecBase (ByteIO *p_byteio, size_t number_of_contexts)
 Constructor.
virtual ~ArithCodecBase ()
 Destructor.

Private Member Functions

 PredModeCodec (const PredModeCodec &cpy)
 Private, bodyless copy constructor: class should not be copied.
PredModeCodecoperator= (const PredModeCodec &rhs)
 Private, bodyless copy operator=: class should not be assigned.
void CodeVal (const MvData &in_data)
void DecodeVal (MvData &out_data)
void DoWorkCode (MvData &in_data)
 Does the work of actually coding the data.
void DoWorkDecode (MvData &out_data)
 virtual decode-only functions ////////////////////////////
void ResetAll ()
unsigned int Prediction (const TwoDArray< PredMode > &preddata) const

Private Attributes

int m_b_xp
int m_b_yp
int m_sb_xp
int m_sb_yp
int m_sb_tlb_x
int m_sb_tlb_y
int m_num_refs

Additional Inherited Members


Detailed Description

Derived from the ArithCodec class, this codes and decodes the prediction mode.


Constructor & Destructor Documentation

dirac::PredModeCodec::PredModeCodec ( ByteIO p_byteio,
size_t  number_of_contexts,
const int  num_refs 
)

Creates a MvDataCodec object to encode MV data, based on parameters

Parameters:
p_byteioInput/output for the encoded bits
number_of_contextsthe number of contexts used
num_refsNumber of references
dirac::PredModeCodec::PredModeCodec ( const PredModeCodec cpy)
private

Member Function Documentation

void dirac::PredModeCodec::CodeVal ( const MvData in_data)
private
void dirac::PredModeCodec::DecodeVal ( MvData out_data)
private
void dirac::PredModeCodec::DoWorkCode ( MvData in_data)
privatevirtual
void dirac::PredModeCodec::DoWorkDecode ( MvData out_data)
privatevirtual
void dirac::PredModeCodec::InitContexts ( )
PredModeCodec& dirac::PredModeCodec::operator= ( const PredModeCodec rhs)
private
unsigned int dirac::PredModeCodec::Prediction ( const TwoDArray< PredMode > &  preddata) const
private
void dirac::PredModeCodec::ResetAll ( )
private

Member Data Documentation

int dirac::PredModeCodec::m_b_xp
private
int dirac::PredModeCodec::m_b_yp
private
int dirac::PredModeCodec::m_num_refs
private
int dirac::PredModeCodec::m_sb_tlb_x
private
int dirac::PredModeCodec::m_sb_tlb_y
private
int dirac::PredModeCodec::m_sb_xp
private
int dirac::PredModeCodec::m_sb_yp
private

The documentation for this class was generated from the following file:

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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