static inline int demodulador(fsk_data *fskd, float *retval, float x)
{
float xS,xM;
fskd->cola_in[fskd->pcola]=x;
xS=filtroS(fskd,x);
xM=filtroM(fskd,x);
fskd->cola_filtro[fskd->pcola]=xM-xS;
x=filtroL(fskd,xM*xM - xS*xS);
fskd->cola_demod[fskd->pcola++]=x;
fskd->pcola &= (NCOLA-1);
*retval = x;
return(0);
}
int demodulador(ZAP *zap, float *retval)
{
float x,xS,xM;
if (get_audio_sample(zap,&x)) return(-1);
zap->fskd.cola_in[zap->fskd.pcola]=x;
xS=filtroS(zap,x);
xM=filtroM(zap,x);
zap->fskd.cola_filtro[zap->fskd.pcola]=xM-xS;
x=filtroL(zap,xM*xM - xS*xS);
zap->fskd.cola_demod[zap->fskd.pcola++]=x;
zap->fskd.pcola &= (NCOLA-1);
*retval = x;
return(0);
}