Dirac - A Video Codec

Created by the British Broadcasting Corporation.


dirac::CompDecompressor Class Reference

Decompress a picture component. More...

#include <comp_decompress.h>

Collaboration diagram for dirac::CompDecompressor:

Public Member Functions

 CompDecompressor (DecoderParams &decp, const PictureParams &fp)
 Constructor.
void Decompress (ComponentByteIO *p_component_byteio, CoeffArray &coeff_data, SubbandList &bands)
 Decompress a picture component.

Private Member Functions

 CompDecompressor (const CompDecompressor &cpy)
 Copy constructor is private and body-less.
CompDecompressoroperator= (const CompDecompressor &rhs)
 Assignment = is private and body-less.
void SetToVal (CoeffArray &pic_data, const Subband &node, CoeffType val)
 Sets the data of a specific subband node to a given value.
void SetupCodeBlocks (SubbandList &bands)
 Set up the code block structures for each subband.

Private Attributes

DecoderParamsm_decparams
 Copy of the decompression parameters provided to the constructor.
const PictureParamsm_pparams
 Reference to the picture parameters provided to the constructor.
const PictureSortm_psort
 Reference to the picture sort.

Detailed Description

This class decompresses one of the three components (Y, U, or V) of a picture according to a given set or parameters. CompDecompressor is used by PictureCompressor..

Constructor & Destructor Documentation

◆ CompDecompressor() [1/2]

dirac::CompDecompressor::CompDecompressor ( DecoderParams & decp,
const PictureParams & fp )

Create and initialize a component decompressor with the given characteristics.

Parameters
decpdecoding parameters
fppicture parameters

Referenced by CompDecompressor(), and operator=().

◆ CompDecompressor() [2/2]

dirac::CompDecompressor::CompDecompressor ( const CompDecompressor & cpy)
private

Copy constructor is private and body-less. This class should not be copied.

References CompDecompressor().

Member Function Documentation

◆ Decompress()

void dirac::CompDecompressor::Decompress ( ComponentByteIO * p_component_byteio,
CoeffArray & coeff_data,
SubbandList & bands )

Decompress a PicArray containing a picture component (Y, U, or V).

Parameters
p_component_byteioBytestream of component data
coeff_datacontains the component data to be decompressed
bandsthe subband metadata

◆ operator=()

CompDecompressor & dirac::CompDecompressor::operator= ( const CompDecompressor & rhs)
private

Assignment = is private and body-less. This class should not be assigned.

References CompDecompressor().

◆ SetToVal()

void dirac::CompDecompressor::SetToVal ( CoeffArray & pic_data,
const Subband & node,
CoeffType val )
private

Sets the data of a specific subband node to a given value

Parameters
pic_datacontains the component data
nodesubband node
valthe value to set

◆ SetupCodeBlocks()

void dirac::CompDecompressor::SetupCodeBlocks ( SubbandList & bands)
private

Set up the code block structures for each subband

Parameters
bandsthe set of all the subbands

Member Data Documentation

◆ m_decparams

DecoderParams& dirac::CompDecompressor::m_decparams
private

◆ m_pparams

const PictureParams& dirac::CompDecompressor::m_pparams
private

◆ m_psort

const PictureSort& dirac::CompDecompressor::m_psort
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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