jpc_qmfb.h

/*
 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
 *   British Columbia.
 * Copyright (c) 2001-2004 Michael David Adams.
 * All rights reserved.
 */
 
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/*
 * Quadrature Mirror-Image Filter Bank (QMFB) Routines
 *
 * $Id$
 */
 
#ifndef JPC_QMFB_H
#define JPC_QMFB_H
 
/******************************************************************************\
* Includes.
\******************************************************************************/
 
#include "jpc_fix.h"
 
/******************************************************************************\
* Constants.
\******************************************************************************/
 
/* QMFB IDs. */
#define JPC_QMFB1D_FT   1       /* 5/3 */
#define JPC_QMFB1D_NS   2       /* 9/7 */
 
/******************************************************************************\
* Types.
\******************************************************************************/
 
/******************************************************************************\
* Functions.
\******************************************************************************/
 
#if !defined(JPC_QMFB_COLGRPSIZE)
/* The number of columns to group together during the vertical processing
stage of the wavelet transform. */
/* The default value for this parameter is probably not optimal for
any particular platform.  Hopefully, it is not too unreasonable, however. */
#define JPC_QMFB_COLGRPSIZE     16
#endif
 
typedef struct {
        int (*analyze)(jpc_fix_t *, int, int, int, int, int);
        int (*synthesize)(jpc_fix_t *, int, int, int, int, int);
        const double *lpenergywts;
        const double *hpenergywts;
} jpc_qmfb2d_t;
 
extern const jpc_qmfb2d_t jpc_ft_qmfb2d;
extern const jpc_qmfb2d_t jpc_ns_qmfb2d;
 
#endif