mct.h File Reference

Implementation of a multi-component transforms (MCT) More...

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Functions
Exported functions
void	opj_mct_encode (OPJ_INT32 *OPJ_RESTRICT c0, OPJ_INT32 *OPJ_RESTRICT c1, OPJ_INT32 *OPJ_RESTRICT c2, OPJ_SIZE_T n)
	Apply a reversible multi-component transform to an image. More...
void	opj_mct_decode (OPJ_INT32 *OPJ_RESTRICT c0, OPJ_INT32 *OPJ_RESTRICT c1, OPJ_INT32 *OPJ_RESTRICT c2, OPJ_SIZE_T n)
	Apply a reversible multi-component inverse transform to an image. More...
OPJ_FLOAT64	opj_mct_getnorm (OPJ_UINT32 compno)
	Get norm of the basis function used for the reversible multi-component transform. More...
void	opj_mct_encode_real (OPJ_FLOAT32 *OPJ_RESTRICT c0, OPJ_FLOAT32 *OPJ_RESTRICT c1, OPJ_FLOAT32 *OPJ_RESTRICT c2, OPJ_SIZE_T n)
	Apply an irreversible multi-component transform to an image. More...
void	opj_mct_decode_real (OPJ_FLOAT32 *OPJ_RESTRICT c0, OPJ_FLOAT32 *OPJ_RESTRICT c1, OPJ_FLOAT32 *OPJ_RESTRICT c2, OPJ_SIZE_T n)
	Apply an irreversible multi-component inverse transform to an image. More...
OPJ_FLOAT64	opj_mct_getnorm_real (OPJ_UINT32 compno)
	Get norm of the basis function used for the irreversible multi-component transform. More...
OPJ_BOOL	opj_mct_encode_custom (OPJ_BYTE *p_coding_data, OPJ_SIZE_T n, OPJ_BYTE **p_data, OPJ_UINT32 p_nb_comp, OPJ_UINT32 is_signed)
	FIXME DOC. More...
OPJ_BOOL	opj_mct_decode_custom (OPJ_BYTE *pDecodingData, OPJ_SIZE_T n, OPJ_BYTE **pData, OPJ_UINT32 pNbComp, OPJ_UINT32 isSigned)
	FIXME DOC. More...
void	opj_calculate_norms (OPJ_FLOAT64 *pNorms, OPJ_UINT32 p_nb_comps, OPJ_FLOAT32 *pMatrix)
	FIXME DOC. More...
const OPJ_FLOAT64 *	opj_mct_get_mct_norms (void)
	FIXME DOC. More...
const OPJ_FLOAT64 *	opj_mct_get_mct_norms_real (void)
	FIXME DOC. More...

Detailed Description

Implementation of a multi-component transforms (MCT)

The functions in MCT.C have for goal to realize reversible and irreversible multicomponent transform. The functions in MCT.C are used by some function in TCD.C.

Function Documentation

opj_calculate_norms()

void opj_calculate_norms	(	OPJ_FLOAT64 *	pNorms,
		OPJ_UINT32	p_nb_comps,
		OPJ_FLOAT32 *	pMatrix
	)

FIXME DOC.

Parameters

pNorms	MCT data
p_nb_comps	size of components
pMatrix	components

Returns

Referenced by opj_j2k_setup_encoder().

opj_mct_decode()

void opj_mct_decode	(	OPJ_INT32 *OPJ_RESTRICT	c0,
		OPJ_INT32 *OPJ_RESTRICT	c1,
		OPJ_INT32 *OPJ_RESTRICT	c2,
		OPJ_SIZE_T	n
	)

Apply a reversible multi-component inverse transform to an image.

Parameters

c0	Samples for luminance component
c1	Samples for red chrominance component
c2	Samples for blue chrominance component
n	Number of samples for each component

Referenced by opj_tcd_mct_decode().

opj_mct_decode_custom()

OPJ_BOOL opj_mct_decode_custom	(	OPJ_BYTE *	pDecodingData,
		OPJ_SIZE_T	n,
		OPJ_BYTE **	pData,
		OPJ_UINT32	pNbComp,
		OPJ_UINT32	isSigned
	)

FIXME DOC.

Parameters

pDecodingData	MCT data
n	size of components
pData	components
pNbComp	nb of components (i.e. size of p_data)
isSigned	tells if the data is signed

Returns

OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise

References OPJ_ARG_NOT_USED, OPJ_FALSE, opj_free(), opj_malloc(), and OPJ_TRUE.

Referenced by opj_tcd_mct_decode().

opj_mct_decode_real()

void opj_mct_decode_real	(	OPJ_FLOAT32 *OPJ_RESTRICT	c0,
		OPJ_FLOAT32 *OPJ_RESTRICT	c1,
		OPJ_FLOAT32 *OPJ_RESTRICT	c2,
		OPJ_SIZE_T	n
	)

Apply an irreversible multi-component inverse transform to an image.

Parameters

c0	Samples for luminance component
c1	Samples for red chrominance component
c2	Samples for blue chrominance component
n	Number of samples for each component

Referenced by opj_tcd_mct_decode().

opj_mct_encode()

void opj_mct_encode	(	OPJ_INT32 *OPJ_RESTRICT	c0,
		OPJ_INT32 *OPJ_RESTRICT	c1,
		OPJ_INT32 *OPJ_RESTRICT	c2,
		OPJ_SIZE_T	n
	)

Apply a reversible multi-component transform to an image.

Parameters

c0	Samples for red component
c1	Samples for green component
c2	Samples blue component
n	Number of samples for each component

Referenced by opj_tcd_mct_encode().

opj_mct_encode_custom()

OPJ_BOOL opj_mct_encode_custom	(	OPJ_BYTE *	p_coding_data,
		OPJ_SIZE_T	n,
		OPJ_BYTE **	p_data,
		OPJ_UINT32	p_nb_comp,
		OPJ_UINT32	is_signed
	)

FIXME DOC.

Parameters

p_coding_data	MCT data
n	size of components
p_data	components
p_nb_comp	nb of components (i.e. size of p_data)
is_signed	tells if the data is signed

Returns

OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise

References OPJ_ARG_NOT_USED, OPJ_FALSE, opj_free(), opj_int_fix_mul(), opj_malloc(), and OPJ_TRUE.

Referenced by opj_tcd_mct_encode().

opj_mct_encode_real()

void opj_mct_encode_real	(	OPJ_FLOAT32 *OPJ_RESTRICT	c0,
		OPJ_FLOAT32 *OPJ_RESTRICT	c1,
		OPJ_FLOAT32 *OPJ_RESTRICT	c2,
		OPJ_SIZE_T	n
	)

Apply an irreversible multi-component transform to an image.

Parameters

c0	Samples for red component
c1	Samples for green component
c2	Samples blue component
n	Number of samples for each component

Referenced by opj_tcd_mct_encode().

opj_mct_get_mct_norms()

const OPJ_FLOAT64* opj_mct_get_mct_norms

(

void

)

FIXME DOC.

References opj_mct_norms.

Referenced by opj_tcd_t1_encode().

opj_mct_get_mct_norms_real()

const OPJ_FLOAT64* opj_mct_get_mct_norms_real

(

void

)

FIXME DOC.

References opj_mct_norms_real.

Referenced by opj_tcd_t1_encode().

opj_mct_getnorm()

OPJ_FLOAT64 opj_mct_getnorm

(

OPJ_UINT32

compno

)

Get norm of the basis function used for the reversible multi-component transform.

Parameters

compno

Number of the component (0->Y, 1->U, 2->V)

Returns

References opj_mct_norms.

opj_mct_getnorm_real()

OPJ_FLOAT64 opj_mct_getnorm_real

(

OPJ_UINT32

compno

)

Get norm of the basis function used for the irreversible multi-component transform.

Parameters

compno

Number of the component (0->Y, 1->U, 2->V)

Returns

References opj_mct_norms_real.