Dirac - A Video Codec

Created by the British Broadcasting Corporation.


dirac::BandCodec Class Reference

A general class for coding and decoding wavelet subband data. More...

#include <band_codec.h>

Inheritance diagram for dirac::BandCodec:

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Collaboration diagram for dirac::BandCodec:

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List of all members.

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions


Detailed Description

A general class for coding and decoding wavelet subband data, deriving from the abstract ArithCodec class.


Constructor & Destructor Documentation

dirac::BandCodec::BandCodec ( SubbandByteIO subband_byteio,
size_t  number_of_contexts,
const SubbandList band_list,
int  band_num,
const bool  is_intra 
)

Creates a BandCodec object to encode subband data

Parameters:
subband_byteio input/output for the encoded bits
number_of_contexts the number of contexts used in the encoding process
band_list the set of all the subbands
band_num the number of the subband being coded
is_intra Flag indicating whether the band comes from an intra frame

dirac::BandCodec::BandCodec ( const BandCodec cpy  )  [private]


Member Function Documentation

void dirac::BandCodec::CodeVal ( PicArray in_data,
const int  xpos,
const int  ypos,
const ValueType  val 
) [inline, protected]

void dirac::BandCodec::DecodeVal ( PicArray out_data,
const int  xpos,
const int  ypos 
) [inline, protected]

void dirac::BandCodec::CodeQIndexOffset ( const int  offset  )  [protected]

int dirac::BandCodec::DecodeQIndexOffset (  )  [protected]

void dirac::BandCodec::SetToVal ( const CodeBlock code_block,
PicArray pic_data,
const ValueType  val 
) [inline, protected]

void dirac::BandCodec::ClearBlock ( const CodeBlock code_block,
PicArray pic_data 
) [inline, protected]

virtual void dirac::BandCodec::DoWorkCode ( PicArray in_data  )  [private, virtual]

Reimplemented in dirac::LFBandCodec, and dirac::IntraDCBandCodec.

virtual void dirac::BandCodec::DoWorkDecode ( PicArray out_data  )  [private, virtual]

Reimplemented in dirac::LFBandCodec, and dirac::IntraDCBandCodec.

virtual void dirac::BandCodec::CodeCoeffBlock ( const CodeBlock code_block,
PicArray in_data 
) [private, virtual]

Reimplemented in dirac::LFBandCodec, and dirac::IntraDCBandCodec.

virtual void dirac::BandCodec::DecodeCoeffBlock ( const CodeBlock code_block,
PicArray out_data 
) [private, virtual]

Reimplemented in dirac::LFBandCodec, and dirac::IntraDCBandCodec.

int dirac::BandCodec::ChooseFollowContext ( const int  bin_number  )  const [inline, private]

int dirac::BandCodec::ChooseInfoContext (  )  const [inline, private]

int dirac::BandCodec::ChooseSignContext ( const PicArray data,
const int  xpos,
const int  ypos 
) const [inline, private]

BandCodec& dirac::BandCodec::operator= ( const BandCodec rhs  )  [private]


Member Data Documentation

bool dirac::BandCodec::m_is_intra [protected]

int dirac::BandCodec::m_bnum [protected]

const Subband dirac::BandCodec::m_node [protected]

int dirac::BandCodec::m_last_qf_idx [protected]

int dirac::BandCodec::m_qf [protected]

ValueType dirac::BandCodec::m_offset [protected]

bool dirac::BandCodec::m_nhood_nonzero [protected]

Subband dirac::BandCodec::m_pnode [protected]

int dirac::BandCodec::m_pxp [protected]

int dirac::BandCodec::m_pyp [protected]

int dirac::BandCodec::m_pxl [protected]

int dirac::BandCodec::m_pyl [protected]

int dirac::BandCodec::m_pxpos [protected]

int dirac::BandCodec::m_pypos [protected]

bool dirac::BandCodec::m_parent_notzero [protected]


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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