RetroArch/audio/resampler.h
2012-07-06 17:36:37 +02:00

58 lines
1.4 KiB
C

/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __RARCH_RESAMPLER_H
#define __RARCH_RESAMPLER_H
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#include <stddef.h>
#include <stdint.h>
#include <math.h>
// M_PI is left out of ISO C99 :(
#ifndef M_PI
#define M_PI 3.14159265358979323846264338327
#endif
typedef struct rarch_resampler rarch_resampler_t;
#ifdef HAVE_FIXED_POINT
typedef int16_t sample_t;
#else
typedef float sample_t;
#endif
struct resampler_data
{
const sample_t *data_in;
sample_t *data_out;
size_t input_frames;
size_t output_frames;
double ratio;
};
rarch_resampler_t *resampler_new(void);
void resampler_process(rarch_resampler_t *re, struct resampler_data *data);
void resampler_free(rarch_resampler_t *re);
#endif