ref: dd88a3bf36323b1917aad54943766529bcfbe9d0
dir: /h/delay.h/
typedef struct {
SPFLOAT time;
SPFLOAT feedback;
SPFLOAT last;
sp_auxdata buf;
uint32_t bufsize;
uint32_t bufpos;
} sp_delay;
int sp_delay_create(sp_delay **p);
int sp_delay_destroy(sp_delay **p);
int sp_delay_init(sp_data *sp, sp_delay *p, SPFLOAT time);
int sp_delay_compute(sp_data *sp, sp_delay *p, SPFLOAT *in, SPFLOAT *out);