Genesis-Plus-GX/source/sound/Fir_Resampler.h

31 lines
1010 B
C

/* Finite impulse response (FIR) resampler with adjustable FIR size */
/* Game_Music_Emu 0.5.2 */
#ifndef FIR_RESAMPLER_H
#define FIR_RESAMPLER_H
#define STEREO 2
#define MAX_RES 32
#define WIDTH 16
#define WRITE_OFFSET (WIDTH * STEREO) - STEREO
#define ROLLOFF 0.990
#define GAIN 1.0
typedef short sample_t;
extern int Fir_Resampler_initialize( int new_size );
extern void Fir_Resampler_shutdown( void );
extern void Fir_Resampler_clear( void );
extern double Fir_Resampler_time_ratio( double new_factor );
extern double Fir_Resampler_ratio( void );
extern int Fir_Resampler_max_write( void );
extern sample_t* Fir_Resampler_buffer( void );
extern int Fir_Resampler_written( void );
extern int Fir_Resampler_avail( void );
extern void Fir_Resampler_write( long count );
extern int Fir_Resampler_read( sample_t** out, unsigned long count );
extern int Fir_Resampler_input_needed( unsigned long output_count );
extern int Fir_Resampler_skip_input( long count );
#endif