Dirac - A Video Codec

Created by the British Broadcasting Corporation.

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dirac::MvDataCodec Class Reference

Codes and decodes all the Motion Vector data. More...

#include <mv_codec.h>

Inheritance diagram for dirac::MvDataCodec:

[legend]Collaboration diagram for dirac::MvDataCodec:

[legend]List of all members.

Public Member Functions

• MvDataCodec (ByteIO *p_byteio, size_t number_of_contexts, const ChromaFormat &cf)

  Constructor.
  

• void InitContexts ()

  Initialises the contexts.
  

Private Member Functions

• MvDataCodec (const MvDataCodec &cpy)

  Private, bodyless copy constructor: class should not be copied.
  

• MvDataCodec & operator= (const MvDataCodec &rhs)

  Private, bodyless copy operator=: class should not be assigned.
  

• void CodeMBSplit (const MvData &in_data)
• void CodePredmode (const MvData &in_data)
• void CodeMv1 (const MvData &in_data)
• void CodeMv2 (const MvData &in_data)
• void CodeDC (const MvData &in_data)
• void DecodeMBSplit (MvData &out_data)
• void DecodePredmode (MvData &out_data)
• void DecodeMv1 (MvData &out_data)
• void DecodeMv2 (MvData &out_data)
• void DecodeDC (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 MBSplitPrediction (const TwoDArray< int > &mbdata) const
• unsigned int BlockModePrediction (const TwoDArray< PredMode > &preddata, const unsigned int num_refs) const
• MVector Mv1Prediction (const MvArray &mvarray, const TwoDArray< PredMode > &preddata) const
• MVector Mv2Prediction (const MvArray &mvarray, const TwoDArray< PredMode > &preddata) const
• ValueType DCPrediction (const TwoDArray< ValueType > &dcdata, const TwoDArray< PredMode > &preddata) const

Private Attributes

• const ChromaFormat & m_cformat
• int m_b_xp
• int m_b_yp
• int m_mb_xp
• int m_mb_yp
• int m_mb_tlb_x
• int m_mb_tlb_y

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Detailed Description

Derived from the ArithCodec class, this codes and decodes all the motion vector data.

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Constructor & Destructor Documentation

dirac::MvDataCodec::MvDataCodec (  ByteIO *  p_byteio, size_t  number_of_contexts, const ChromaFormat &  cf )

Creates a MvDataCodec object to encode MV data, based on parameters Parameters: p_byteio  Input/output for the encoded bits number_of_contexts  the number of contexts used cf  the chroma format

dirac::MvDataCodec::MvDataCodec (  const MvDataCodec &  cpy  )  [private]

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Member Function Documentation

unsigned int dirac::MvDataCodec::BlockModePrediction (  const TwoDArray< PredMode > &  preddata, const unsigned int  num_refs )  const [private]

void dirac::MvDataCodec::CodeDC (  const MvData &  in_data  )  [private]

void dirac::MvDataCodec::CodeMBSplit (  const MvData &  in_data  )  [private]

void dirac::MvDataCodec::CodeMv1 (  const MvData &  in_data  )  [private]

void dirac::MvDataCodec::CodeMv2 (  const MvData &  in_data  )  [private]

void dirac::MvDataCodec::CodePredmode (  const MvData &  in_data  )  [private]

ValueType dirac::MvDataCodec::DCPrediction (  const TwoDArray< ValueType > &  dcdata, const TwoDArray< PredMode > &  preddata )  const [private]

void dirac::MvDataCodec::DecodeDC (  MvData &  out_data  )  [private]

void dirac::MvDataCodec::DecodeMBSplit (  MvData &  out_data  )  [private]

void dirac::MvDataCodec::DecodeMv1 (  MvData &  out_data  )  [private]

void dirac::MvDataCodec::DecodeMv2 (  MvData &  out_data  )  [private]

void dirac::MvDataCodec::DecodePredmode (  MvData &  out_data  )  [private]

void dirac::MvDataCodec::DoWorkCode (  MvData &  in_data  )  [private, virtual]

Implements dirac::ArithCodec< MvData >.

void dirac::MvDataCodec::DoWorkDecode (  MvData &  out_data  )  [private, virtual]

Implements dirac::ArithCodec< MvData >.

void dirac::MvDataCodec::InitContexts (   )

unsigned int dirac::MvDataCodec::MBSplitPrediction (  const TwoDArray< int > &  mbdata  )  const [private]

MVector dirac::MvDataCodec::Mv1Prediction (  const MvArray &  mvarray, const TwoDArray< PredMode > &  preddata )  const [private]

MVector dirac::MvDataCodec::Mv2Prediction (  const MvArray &  mvarray, const TwoDArray< PredMode > &  preddata )  const [private]

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

void dirac::MvDataCodec::ResetAll (   )  [private]

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Member Data Documentation

int dirac::MvDataCodec::m_b_xp [private]

int dirac::MvDataCodec::m_b_yp [private]

const ChromaFormat& dirac::MvDataCodec::m_cformat [private]

int dirac::MvDataCodec::m_mb_tlb_x [private]

int dirac::MvDataCodec::m_mb_tlb_y [private]

int dirac::MvDataCodec::m_mb_xp [private]

int dirac::MvDataCodec::m_mb_yp [private]

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

• mv_codec.h

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