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/* wavelet/gsl_wavelet.h
*
* Copyright (C) 2004 Ivo Alxneit
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __GSL_WAVELET_H__
#define __GSL_WAVELET_H__
#include <stdlib.h>
#include <gsl/gsl_types.h>
#include <gsl/gsl_errno.h>
#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif
__BEGIN_DECLS
typedef enum {
gsl_wavelet_forward = 1, gsl_wavelet_backward = -1
}
gsl_wavelet_direction;
typedef struct
{
const char *name;
int (*init) (const double **h1, const double **g1,
const double **h2, const double **g2, size_t * nc,
size_t * offset, size_t member);
}
gsl_wavelet_type;
typedef struct
{
const gsl_wavelet_type *type;
const double *h1;
const double *g1;
const double *h2;
const double *g2;
size_t nc;
size_t offset;
}
gsl_wavelet;
typedef struct
{
double *scratch;
size_t n;
}
gsl_wavelet_workspace;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_daubechies;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_daubechies_centered;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_haar;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_haar_centered;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_bspline;
GSL_VAR const gsl_wavelet_type *gsl_wavelet_bspline_centered;
gsl_wavelet *gsl_wavelet_alloc (const gsl_wavelet_type * T, size_t k);
void gsl_wavelet_free (gsl_wavelet * w);
const char *gsl_wavelet_name (const gsl_wavelet * w);
gsl_wavelet_workspace *gsl_wavelet_workspace_alloc (size_t n);
void gsl_wavelet_workspace_free (gsl_wavelet_workspace * work);
int gsl_wavelet_transform (const gsl_wavelet * w,
double *data, size_t stride, size_t n,
gsl_wavelet_direction dir,
gsl_wavelet_workspace * work);
int gsl_wavelet_transform_forward (const gsl_wavelet * w,
double *data, size_t stride, size_t n,
gsl_wavelet_workspace * work);
int gsl_wavelet_transform_inverse (const gsl_wavelet * w,
double *data, size_t stride, size_t n,
gsl_wavelet_workspace * work);
__END_DECLS
#endif /* __GSL_WAVELET_H__ */
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