mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-23 00:36:51 +00:00
110 lines
3.4 KiB
C
110 lines
3.4 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 __PRIVATE_H__
|
||
|
|
#define __PRIVATE_H__
|
||
|
|
|
||
|
|
#include "resample.h"
|
||
|
|
|
||
|
|
void resample_nearest_s16(resample_t *r);
|
||
|
|
void resample_bilinear_s16(resample_t *r);
|
||
|
|
void resample_sinc_s16(resample_t *r);
|
||
|
|
void resample_sinc_slow_s16(resample_t *r);
|
||
|
|
void resample_sinc_ft_s16(resample_t * r);
|
||
|
|
|
||
|
|
void resample_nearest_float(resample_t *r);
|
||
|
|
void resample_bilinear_float(resample_t *r);
|
||
|
|
void resample_sinc_float(resample_t *r);
|
||
|
|
void resample_sinc_slow_float(resample_t *r);
|
||
|
|
void resample_sinc_ft_float(resample_t * r);
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct functable_s functable_t;
|
||
|
|
struct functable_s {
|
||
|
|
double start;
|
||
|
|
double offset;
|
||
|
|
int len;
|
||
|
|
|
||
|
|
double invoffset;
|
||
|
|
|
||
|
|
double scale;
|
||
|
|
double scale2;
|
||
|
|
|
||
|
|
double (*func_x)(void *,double x);
|
||
|
|
double (*func_dx)(void *,double x);
|
||
|
|
|
||
|
|
double (*func2_x)(void *,double x);
|
||
|
|
double (*func2_dx)(void *,double x);
|
||
|
|
|
||
|
|
double *fx;
|
||
|
|
double *fdx;
|
||
|
|
|
||
|
|
void *priv;
|
||
|
|
};
|
||
|
|
|
||
|
|
void functable_init(functable_t *t);
|
||
|
|
double functable_eval(functable_t *t,double x);
|
||
|
|
|
||
|
|
double functable_fir(functable_t *t,double x0,int n,double *data,int len);
|
||
|
|
void functable_fir2(functable_t *t,double *r0, double *r1, double x0,
|
||
|
|
int n,double *data,int len);
|
||
|
|
|
||
|
|
double functable_sinc(void *p, double x);
|
||
|
|
double functable_dsinc(void *p, double x);
|
||
|
|
double functable_window_std(void *p, double x);
|
||
|
|
double functable_window_dstd(void *p, double x);
|
||
|
|
double functable_window_boxcar(void *p, double x);
|
||
|
|
double functable_window_dboxcar(void *p, double x);
|
||
|
|
|
||
|
|
/* math lib stuff */
|
||
|
|
|
||
|
|
void conv_double_short_table(double *dest, short *src, int n);
|
||
|
|
void conv_double_short_unroll(double *dest, short *src, int n);
|
||
|
|
void conv_double_short_ref(double *dest, short *src, int n);
|
||
|
|
#ifdef HAVE_CPU_PPC
|
||
|
|
void conv_double_short_altivec(double *dest, short *src, int n);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void conv_short_double_ref(short *dest, double *src, int n);
|
||
|
|
#ifdef HAVE_CPU_PPC
|
||
|
|
void conv_short_double_ppcasm(short *dest, double *src, int n);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_CPU_PPC
|
||
|
|
#define conv_double_short conv_double_short_table
|
||
|
|
#define conv_short_double conv_short_double_ppcasm
|
||
|
|
#else
|
||
|
|
#define conv_double_short conv_double_short_ref
|
||
|
|
#define conv_short_double conv_short_double_ref
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define conv_double_float conv_double_float_ref
|
||
|
|
#define conv_float_double conv_float_double_ref
|
||
|
|
|
||
|
|
void conv_double_short_dstr(double *dest, short *src, int n, int dstr);
|
||
|
|
void conv_short_double_sstr(short *dest, double *src, int n, int dstr);
|
||
|
|
|
||
|
|
void conv_double_float_ref(double *dest, float *src, int n);
|
||
|
|
void conv_float_double_ref(float *dest, double *src, int n);
|
||
|
|
void conv_double_float_dstr(double *dest, float *src, int n, int dstr);
|
||
|
|
void conv_float_double_sstr(float *dest, double *src, int n, int sstr);
|
||
|
|
|
||
|
|
#endif /* __PRIVATE_H__ */
|