Dirac - A Video Codec

Created by the British Broadcasting Corporation.

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dirac::PicturePredParams Class Reference

Structure to hold motion parameters when motion comp is used.

#include <common.h>

Collaboration diagram for dirac::PicturePredParams:

[legend]List of all members.

Public Member Functions

• PicturePredParams ()
• bool UsingGlobalMotion () const

  Return the global motion flag used for encoding/decoding.
  

• unsigned int PictureWeightsBits () const

  Return the number of picture weight precision bits.
  

• int Ref1Weight () const

  Return the Ref1 weight.
  

• int Ref2Weight () const

  Return the Ref2 weight.
  

• bool CustomRefWeights ()
• int XNumMB () const

  Return the number of macroblocks horizontally.
  

• int YNumMB () const

  Return the number of macroblocks vertically.
  

• int XNumBlocks () const

  Return the number of blocks horizontally.
  

• int YNumBlocks () const

  Returns the number of blocks vertically.
  

• const OLBParams & LumaBParams (int n) const

  Return the Luma block parameters for each macroblock splitting level.
  

• const OLBParams & ChromaBParams (int n) const

  Return the Chroma block parameters for each macroblock splitting level.
  

• MVPrecisionType MVPrecision () const

  Return the number of accuracy bits used for motion vectors.
  

• void SetXNumMB (const int xn)

  Set how many MBs there are horizontally.
  

• void SetYNumMB (const int yn)

  Set how many MBs there are vertically.
  

• void SetXNumBlocks (const int xn)

  Set how many blocks there are horizontally.
  

• void SetYNumBlocks (const int yn)

  Set how many blocks there are vertically.
  

• void SetBlockSizes (const OLBParams &olbparams, const ChromaFormat cformat)

  Set the block sizes for all MB splitting levels given these prototype block sizes for level=2.
  

• void SetLumaBlockParams (const OLBParams &olbparams)

  Set block level luma params.
  

• void SetMVPrecision (const MVPrecisionType p)

  Set the number of accuracy bits for motion vectors.
  

• void SetMVPrecision (const MVPrecisionType p) const
• void SetUsingGlobalMotion (bool gm)

  Set the wavelet filter used for picture (de)coding.
  

• void SetPictureWeightsPrecision (unsigned int wt_prec)

  Set the picture weight precision bits used for (de)coding.
  

• void SetRef1Weight (int wt)

  Set the ref 1 picture weight.
  

• void SetRef2Weight (int wt)

  Set the ref 2 picture weight.
  

Private Attributes

• int m_x_num_mb

  The number of macroblocks horizontally.
  

• int m_y_num_mb

  The number of macroblocks verticaly.
  

• int m_x_num_blocks

  The number of blocks horizontally.
  

• int m_y_num_blocks

  The number of blocks vertically.
  

• OneDArray< OLBParams > m_lbparams
• OneDArray< OLBParams > m_cbparams
• MVPrecisionType m_mv_precision

  The precision of motion vectors (number of accuracy bits eg 1=half-pel accuracy).
  

• unsigned int m_picture_weights_bits

  picture predicion parameters - precision
  

• int m_ref1_weight

  picture predicion parameters - reference picture 1 weight
  

• int m_ref2_weight

  picture predicion parameters - reference picture 2 weight
  

• bool m_use_global_motion

  Global motion fields.
  

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Constructor & Destructor Documentation

dirac::PicturePredParams::PicturePredParams (   )  [inline]

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Member Function Documentation

const OLBParams& dirac::PicturePredParams::ChromaBParams (  int  n  )  const [inline]

bool dirac::PicturePredParams::CustomRefWeights (   )  [inline]

const OLBParams& dirac::PicturePredParams::LumaBParams (  int  n  )  const [inline]

MVPrecisionType dirac::PicturePredParams::MVPrecision (   )  const [inline]

unsigned int dirac::PicturePredParams::PictureWeightsBits (   )  const [inline]

int dirac::PicturePredParams::Ref1Weight (   )  const [inline]

int dirac::PicturePredParams::Ref2Weight (   )  const [inline]

void dirac::PicturePredParams::SetBlockSizes (  const OLBParams &  olbparams, const ChromaFormat  cformat )

void dirac::PicturePredParams::SetLumaBlockParams (  const OLBParams &  olbparams  )  [inline]

void dirac::PicturePredParams::SetMVPrecision (  const MVPrecisionType  p  )  const [inline]

void dirac::PicturePredParams::SetMVPrecision (  const MVPrecisionType  p  )  [inline]

void dirac::PicturePredParams::SetPictureWeightsPrecision (  unsigned int  wt_prec  )  [inline]

void dirac::PicturePredParams::SetRef1Weight (  int  wt  )  [inline]

void dirac::PicturePredParams::SetRef2Weight (  int  wt  )  [inline]

void dirac::PicturePredParams::SetUsingGlobalMotion (  bool  gm  )  [inline]

void dirac::PicturePredParams::SetXNumBlocks (  const int  xn  )  [inline]

void dirac::PicturePredParams::SetXNumMB (  const int  xn  )  [inline]

void dirac::PicturePredParams::SetYNumBlocks (  const int  yn  )  [inline]

void dirac::PicturePredParams::SetYNumMB (  const int  yn  )  [inline]

bool dirac::PicturePredParams::UsingGlobalMotion (   )  const [inline]

int dirac::PicturePredParams::XNumBlocks (   )  const [inline]

int dirac::PicturePredParams::XNumMB (   )  const [inline]

int dirac::PicturePredParams::YNumBlocks (   )  const [inline]

int dirac::PicturePredParams::YNumMB (   )  const [inline]

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Member Data Documentation

OneDArray<OLBParams> dirac::PicturePredParams::m_cbparams [private]

OneDArray<OLBParams> dirac::PicturePredParams::m_lbparams [private]

MVPrecisionType dirac::PicturePredParams::m_mv_precision [mutable, private]

unsigned int dirac::PicturePredParams::m_picture_weights_bits [private]

int dirac::PicturePredParams::m_ref1_weight [private]

int dirac::PicturePredParams::m_ref2_weight [private]

bool dirac::PicturePredParams::m_use_global_motion [private]

int dirac::PicturePredParams::m_x_num_blocks [private]

int dirac::PicturePredParams::m_x_num_mb [private]

int dirac::PicturePredParams::m_y_num_blocks [private]

int dirac::PicturePredParams::m_y_num_mb [private]

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

• common.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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