mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-11 02:46:33 +00:00
62 lines
2 KiB
C
62 lines
2 KiB
C
|
/* Resampling library
|
||
|
|
* Copyright (C) <2001> David Schleef <ds@schleef.org>
|
||
|
|
*
|
||
|
|
* This library is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU Library General Public
|
||
|
|
* License as published by the Free Software Foundation; either
|
||
|
|
* version 2 of the License, or any later version.
|
||
|
|
*
|
||
|
|
* This library 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
|
||
|
|
* Library General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU Library General Public
|
||
|
|
* License along with this library; if not, write to the
|
||
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||
|
|
* Boston, MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef __FUNCTABLE_H__
|
||
|
|
#define __FUNCTABLE_H__
|
||
|
|
|
||
|
|
typedef void FunctableFunc (double *fx, double *dfx, double x, void *closure);
|
||
|
|
|
||
|
|
typedef struct _Functable Functable;
|
||
|
|
struct _Functable {
|
||
|
|
int length;
|
||
|
|
|
||
|
|
double offset;
|
||
|
|
double multiplier;
|
||
|
|
|
||
|
|
double inv_multiplier;
|
||
|
|
|
||
|
|
double *fx;
|
||
|
|
double *dfx;
|
||
|
|
};
|
||
|
|
|
||
|
|
Functable *functable_new (void);
|
||
|
|
void functable_setup (Functable *t);
|
||
|
|
void functable_free (Functable *t);
|
||
|
|
|
||
|
|
void functable_set_length (Functable *t, int length);
|
||
|
|
void functable_set_offset (Functable *t, double offset);
|
||
|
|
void functable_set_multiplier (Functable *t, double multiplier);
|
||
|
|
void functable_calculate (Functable *t, FunctableFunc func, void *closure);
|
||
|
|
void functable_calculate_multiply (Functable *t, FunctableFunc func, void *closure);
|
||
|
|
|
||
|
|
|
||
|
|
double functable_evaluate (Functable *t,double x);
|
||
|
|
|
||
|
|
double functable_fir(Functable *t,double x0,int n,double *data,int len);
|
||
|
|
void functable_fir2(Functable *t,double *r0, double *r1, double x0,
|
||
|
|
int n,double *data,int len);
|
||
|
|
|
||
|
|
void functable_func_sinc(double *fx, double *dfx, double x, void *closure);
|
||
|
|
void functable_func_boxcar(double *fx, double *dfx, double x, void *closure);
|
||
|
|
void functable_func_hanning(double *fx, double *dfx, double x, void *closure);
|
||
|
|
|
||
|
|
#endif /* __PRIVATE_H__ */
|
||
|
|
|