openjpeg/src/lib/openjp2/mct.h

/*
 * The copyright in this software is being made available under the 2-clauses 
 * BSD License, included below. This software may be subject to other third 
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux 
 * Copyright (c) 2003-2014, Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR 
 * Copyright (c) 2012, CS Systemes d'Information, France
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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 */

#ifndef __MCT_H
#define __MCT_H
/**
@file mct.h
@brief 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.
*/

/** @defgroup MCT MCT - Implementation of a multi-component transform */
/*@{*/

/** @name Exported functions */
/*@{*/
/* ----------------------------------------------------------------------- */
/**
Apply a reversible multi-component transform to an image
@param c0 Samples for red component
@param c1 Samples for green component
@param c2 Samples blue component
@param 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 inverse transform to an image
@param c0 Samples for luminance component
@param c1 Samples for red chrominance component
@param c2 Samples for blue chrominance component
@param n Number of samples for each component
*/
void opj_mct_decode(OPJ_INT32 *c0, OPJ_INT32 *c1, OPJ_INT32 *c2, OPJ_UINT32 n);
/**
Get norm of the basis function used for the reversible multi-component transform
@param compno Number of the component (0->Y, 1->U, 2->V)
@return 
*/
OPJ_FLOAT64 opj_mct_getnorm(OPJ_UINT32 compno);

/**
Apply an irreversible multi-component transform to an image
@param c0 Samples for red component
@param c1 Samples for green component
@param c2 Samples blue component
@param n Number of samples for each component
*/
void opj_mct_encode_real(OPJ_INT32 *c0, OPJ_INT32 *c1, OPJ_INT32 *c2, OPJ_UINT32 n);
/**
Apply an irreversible multi-component inverse transform to an image
@param c0 Samples for luminance component
@param c1 Samples for red chrominance component
@param c2 Samples for blue chrominance component
@param n Number of samples for each component
*/
void opj_mct_decode_real(OPJ_FLOAT32* c0, OPJ_FLOAT32* c1, OPJ_FLOAT32* c2, OPJ_UINT32 n);
/**
Get norm of the basis function used for the irreversible multi-component transform
@param compno Number of the component (0->Y, 1->U, 2->V)
@return 
*/
OPJ_FLOAT64 opj_mct_getnorm_real(OPJ_UINT32 compno);

/**
FIXME DOC
@param p_coding_data    MCT data
@param n                size of components
@param p_data           components
@param p_nb_comp        nb of components (i.e. size of p_data)
@param is_signed        tells if the data is signed
@return OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise
*/
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
@param pDecodingData    MCT data
@param n                size of components
@param pData            components
@param pNbComp          nb of components (i.e. size of p_data)
@param isSigned         tells if the data is signed
@return OPJ_FALSE if function encounter a problem, OPJ_TRUE otherwise
*/
OPJ_BOOL opj_mct_decode_custom(
					   OPJ_BYTE * pDecodingData,
					   OPJ_UINT32 n,
					   OPJ_BYTE ** pData,
					   OPJ_UINT32 pNbComp,
					   OPJ_UINT32 isSigned);
/**
FIXME DOC
@param pNorms           MCT data
@param p_nb_comps       size of components
@param pMatrix          components
@return 
*/
void opj_calculate_norms(   OPJ_FLOAT64 * pNorms,
                            OPJ_UINT32 p_nb_comps,
                            OPJ_FLOAT32 * pMatrix);
/**
FIXME DOC 
*/
const OPJ_FLOAT64 * opj_mct_get_mct_norms (void);
/**
FIXME DOC 
*/
const OPJ_FLOAT64 * opj_mct_get_mct_norms_real (void);
/* ----------------------------------------------------------------------- */
/*@}*/

/*@}*/

#endif /* __MCT_H */