ref: 2e86b938c226edc0d8bd6c3855baf3bec02b5179
dir: /h/dtrig.h/
typedef struct sp_dtrig{
sp_ftbl *ft;
uint32_t counter;
uint32_t pos;
int running;
int loop;
SPFLOAT delay;
SPFLOAT scale;
} sp_dtrig;
int sp_dtrig_create(sp_dtrig **p);
int sp_dtrig_destroy(sp_dtrig **p);
int sp_dtrig_init(sp_data *sp, sp_dtrig *p, sp_ftbl *ft);
int sp_dtrig_compute(sp_data *sp, sp_dtrig *p, SPFLOAT *in, SPFLOAT *out);