/*
Extended Audio Converter for SDL (Simple DirectMedia Layer)
Copyright © 2002 Frank Ranostaj
Institute of Applied Physik
Johann Wolfgang Goethe-Universit?t
Frankfurt am Main, Germany
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 (at your option) 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
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Frank Ranostaj
@Frank_Ranostaj
*/
#ifndef _SDL_audio_converter_h
#define _SDL_audio_converter_h
#include “SDL_audio.h”
#define SDL_AI_Loop 0x2
#define _fsize 64
typedef struct{
short c[16][2*_fsize];
char incr[16];
int pos_mod;
} VarFilter;
typedef struct{
short* buffer;
int mode;
VarFilter *filter;
} AdapterC;
typedef struct{
VarFilter filter;
double mult; /* buffer must be lenbuf_mult big/
int add;
int (*adapter[32]) ( AdapterC Data, int length );
} SDL_AudioC;
extern DECLSPEC int SDL_ConvertAudioHQ( SDL_AudioC Data,
char buffer, int length, int mode );
extern DECLSPEC int SDL_BuildAudioConverterHQ( SDL_AudioC *Data,
Uint16 src_format, Uint8 src_channels, int src_rate,
Uint16 dst_format, Uint8 dst_channels, int dst_rate );
#endif /* _SDL_audio_converter_h */