ref: a901d5647d30cf20fc0a096a612c58b2f99b8551
dir: /h/reverse.h/
typedef struct {
SPFLOAT delay;
uint32_t bufpos;
uint32_t bufsize;
sp_auxdata buf;
} sp_reverse;
int sp_reverse_create(sp_reverse **p);
int sp_reverse_destroy(sp_reverse **p);
int sp_reverse_init(sp_data *sp, sp_reverse *p, SPFLOAT delay);
int sp_reverse_compute(sp_data *sp, sp_reverse *p, SPFLOAT *in, SPFLOAT *out);