static int vu_decode(struct aufilt_dec_st *st, int16_t *sampv, size_t *sampc)
{
struct vumeter_dec *vu = (struct vumeter_dec *)st;
vu->avg_play = calc_avg_s16(sampv, *sampc);
vu->started = true;
return 0;
}
static int vu_encode(struct aufilt_enc_st *st, void *sampv, size_t *sampc)
{
struct vumeter_enc *vu = (struct vumeter_enc *)st;
vu->avg_rec = calc_avg_s16(sampv, *sampc);
vu->started = true;
return 0;
}