mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-10 03:19:40 +00:00
112 lines
3.5 KiB
C
112 lines
3.5 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 gst_resample_nearest_s16 (gst_resample_t * r);
|
|
void gst_resample_bilinear_s16 (gst_resample_t * r);
|
|
void gst_resample_sinc_s16 (gst_resample_t * r);
|
|
void gst_resample_sinc_slow_s16 (gst_resample_t * r);
|
|
void gst_resample_sinc_ft_s16 (gst_resample_t * r);
|
|
|
|
void gst_resample_nearest_float (gst_resample_t * r);
|
|
void gst_resample_bilinear_float (gst_resample_t * r);
|
|
void gst_resample_sinc_float (gst_resample_t * r);
|
|
void gst_resample_sinc_slow_float (gst_resample_t * r);
|
|
void gst_resample_sinc_ft_float (gst_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__ */
|