Compress a single image picture. More...

#include <picture_compress.h>

Collaboration diagram for dirac::PictureCompressor:

[legend]

Public Member Functions
	PictureCompressor (EncoderParams &encp)
	Constructor. More...

	~PictureCompressor ()
	Destructor. More...

void	PixelME (EncQueue &my_buffer, int pnum)
	Do pixel accurate motion estimate. More...

void	CalcComplexity (EncQueue &my_buffer, int pnum, const OLBParams &olbparams)
	Calculate the complexity of a picture. More...

void	CalcComplexity2 (EncQueue &my_buffer, int pnum)

void	NormaliseComplexity (EncQueue &my_buffer, int pnum)
	Normalise picture complexity with respect to others in the queue. More...

void	SubPixelME (EncQueue &my_buffer, int pnum)
	Do subpixel accurate motion vector refinement. More...

void	ModeDecisionME (EncQueue &my_buffer, int pnum)
	Do mode decision based on sub-pel vectors. More...

void	IntraModeAnalyse (EncQueue &my_buffer, int pnum)
	Detect cuts in the current picture. More...

void	MotionCompensate (EncQueue &my_buffer, int pnum, AddOrSub dirn)
	Does motion compensation on picture pnum (forward or backward) More...

void	Prefilter (EncQueue &my_buffer, int pnum)
	Prefilter if required. More...

void	DoDWT (EncQueue &my_buffer, int pnum, Direction dirn)
	Do the DWT on a given picture. More...

void	CodeResidue (EncQueue &my_pbuffer, int pnum, PictureByteIO *pic_byteio)
	Compress a specific picture within a group of pictures (GOP) More...

void	CodeMVData (EncQueue &my_buffer, int pnum, PictureByteIO *pic_byteio)
	Compresses the motion vector data. More...

bool	IsSkipped ()
	Returns true if the picture has been skipped rather than coded normally. More...

bool	IsMEDataAvail () const
	Returns true if Motion estimation data is available. More...

const MEData *	GetMEData () const
	Returns the motion estimation data. More...

Private Member Functions
	PictureCompressor (const PictureCompressor &cpy)
	Copy constructor is private and body-less. More...

PictureCompressor &	operator= (const PictureCompressor &rhs)
	Assignment = is private and body-less. More...

void	InitCoeffData (CoeffArray &coeff_data, const int xl, const int yl)
	Initialise the coefficient data array for holding wavelet coefficients. More...

float	GetCompLambda (const EncPicture &my_picture, const CompSort csort)
	Returns the value lambda according to picture and component type. More...

void	SelectQuantisers (CoeffArray &coeff_data, SubbandList &bands, const float lambda, OneDArray< unsigned int > &est_counts, const CodeBlockMode cb_mode, const PictureParams &pp, const CompSort csort)

int	SelectMultiQuants (CoeffArray &coeff_data, SubbandList &bands, const int band_num, const float lambda, const PictureParams &pp, const CompSort csort)

void	SetupCodeBlocks (SubbandList &bands)

void	AddSubAverage (CoeffArray &coeff_data, int xl, int yl, AddOrSub dirn)

Private Attributes
EncoderParams &	m_encparams

bool	m_skipped

bool	m_use_global

bool	m_use_block_mv

PredMode	m_global_pred_mode

MEData *	m_me_data

bool	m_medata_avail

bool	m_is_a_cut

MVPrecisionType	m_orig_prec

Detailed Description

This class compresses a single picture at a time, using parameters supplied at its construction. PictureCompressor is used by SequenceCompressor.

Constructor & Destructor Documentation

dirac::PictureCompressor::PictureCompressor ( EncoderParams & encp )

Creates a FrameEncoder with specific set of parameters the control the compression process. It encodes motion data before encoding each component of the picture.

Parameters

encp	encoder parameters

Referenced by IsMEDataAvail().

dirac::PictureCompressor::~PictureCompressor ( )

dirac::PictureCompressor::PictureCompressor ( const PictureCompressor & cpy )

private

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

Member Function Documentation

void dirac::PictureCompressor::AddSubAverage	(	CoeffArray &	coeff_data,
		int	xl,
		int	yl,
		AddOrSub	dirn
	)

private

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::CalcComplexity	(	EncQueue &	my_buffer,
		int	pnum,
		const OLBParams &	olbparams
	)

void dirac::PictureCompressor::CalcComplexity2	(	EncQueue &	my_buffer,
		int	pnum
	)

void dirac::PictureCompressor::CodeMVData	(	EncQueue &	my_buffer,
		int	pnum,
		PictureByteIO *	pic_byteio
	)

void dirac::PictureCompressor::CodeResidue	(	EncQueue &	my_pbuffer,
		int	pnum,
		PictureByteIO *	pic_byteio
	)

Compresses a specified picture within a group of pictures.

Parameters

my_pbuffer	picture buffer in which the reference frames resides
pnum	picture number to compress
pic_byteio	compressed picture in Dirac bytestream format

void dirac::PictureCompressor::DoDWT	(	EncQueue &	my_buffer,
		int	pnum,
		Direction	dirn
	)

float dirac::PictureCompressor::GetCompLambda	(	const EncPicture &	my_picture,
		const CompSort	csort
	)

private

Referenced by IsMEDataAvail().

const MEData* dirac::PictureCompressor::GetMEData ( ) const

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::InitCoeffData	(	CoeffArray &	coeff_data,
		const int	xl,
		const int	yl
	)

private

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::IntraModeAnalyse	(	EncQueue &	my_buffer,
		int	pnum
	)

bool dirac::PictureCompressor::IsMEDataAvail ( ) const

inline

References AddSubAverage(), GetCompLambda(), GetMEData(), InitCoeffData(), m_medata_avail, operator=(), PictureCompressor(), SelectMultiQuants(), SelectQuantisers(), and SetupCodeBlocks().

bool dirac::PictureCompressor::IsSkipped ( )

inline

References m_skipped.

void dirac::PictureCompressor::ModeDecisionME	(	EncQueue &	my_buffer,
		int	pnum
	)

void dirac::PictureCompressor::MotionCompensate	(	EncQueue &	my_buffer,
		int	pnum,
		AddOrSub	dirn
	)

void dirac::PictureCompressor::NormaliseComplexity	(	EncQueue &	my_buffer,
		int	pnum
	)

PictureCompressor& dirac::PictureCompressor::operator= ( const PictureCompressor & rhs )

private

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

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::PixelME	(	EncQueue &	my_buffer,
		int	pnum
	)

void dirac::PictureCompressor::Prefilter	(	EncQueue &	my_buffer,
		int	pnum
	)

int dirac::PictureCompressor::SelectMultiQuants	(	CoeffArray &	coeff_data,
		SubbandList &	bands,
		const int	band_num,
		const float	lambda,
		const PictureParams &	pp,
		const CompSort	csort
	)

private

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::SelectQuantisers	(	CoeffArray &	coeff_data,
		SubbandList &	bands,
		const float	lambda,
		OneDArray< unsigned int > &	est_counts,
		const CodeBlockMode	cb_mode,
		const PictureParams &	pp,
		const CompSort	csort
	)

private

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::SetupCodeBlocks ( SubbandList & bands )

private

Referenced by IsMEDataAvail().

void dirac::PictureCompressor::SubPixelME	(	EncQueue &	my_buffer,
		int	pnum
	)

Member Data Documentation

EncoderParams& dirac::PictureCompressor::m_encparams

private

PredMode dirac::PictureCompressor::m_global_pred_mode

private

bool dirac::PictureCompressor::m_is_a_cut

private

MEData* dirac::PictureCompressor::m_me_data

private

bool dirac::PictureCompressor::m_medata_avail

private

Referenced by IsMEDataAvail().

MVPrecisionType dirac::PictureCompressor::m_orig_prec

private

bool dirac::PictureCompressor::m_skipped

private

Referenced by IsSkipped().

bool dirac::PictureCompressor::m_use_block_mv

private

bool dirac::PictureCompressor::m_use_global

private

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

picture_compress.h

Dirac - A Video Codec

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation