MCT - Implementation of a multi-component transform

Exported functions
void	opj_mct_encode (OPJ_INT32 *c0, OPJ_INT32 *c1, OPJ_INT32 *c2, OPJ_UINT32 n)
	Apply a reversible multi-component transform to an image. More...
void	opj_mct_decode (OPJ_INT32 *c0, OPJ_INT32 *c1, OPJ_INT32 *c2, OPJ_UINT32 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_INT32 *c0, OPJ_INT32 *c1, OPJ_INT32 *c2, OPJ_UINT32 n)
	Apply an irreversible multi-component transform to an image. More...
void	opj_mct_decode_real (OPJ_FLOAT32 *c0, OPJ_FLOAT32 *c1, OPJ_FLOAT32 *c2, OPJ_UINT32 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_UINT32 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_UINT32 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

Function Documentation

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().

void opj_mct_decode	(	OPJ_INT32 *	c0,
		OPJ_INT32 *	c1,
		OPJ_INT32 *	c2,
		OPJ_UINT32	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

OPJ_BOOL opj_mct_decode_custom	(	OPJ_BYTE *	pDecodingData,
		OPJ_UINT32	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().

void opj_mct_decode_real	(	OPJ_FLOAT32 *	c0,
		OPJ_FLOAT32 *	c1,
		OPJ_FLOAT32 *	c2,
		OPJ_UINT32	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

void opj_mct_encode	(	OPJ_INT32 *	c0,
		OPJ_INT32 *	c1,
		OPJ_INT32 *	c2,
		OPJ_UINT32	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

OPJ_BOOL opj_mct_encode_custom	(	OPJ_BYTE *	p_coding_data,
		OPJ_UINT32	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().

void opj_mct_encode_real	(	OPJ_INT32 *	c0,
		OPJ_INT32 *	c1,
		OPJ_INT32 *	c2,
		OPJ_UINT32	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

const OPJ_FLOAT64* opj_mct_get_mct_norms

(

void

)

FIXME DOC.

References opj_mct_norms.

Referenced by opj_tcd_t1_encode().

const OPJ_FLOAT64* opj_mct_get_mct_norms_real

(

void

)

FIXME DOC.

References opj_mct_norms_real.

Referenced by opj_tcd_t1_encode().

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_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.