// execute frame synchronizer
// _q : frame synchronizer object
// _x : input sample array [size: _n x 1]
// _n : number of input samples
void flexframesync_execute(flexframesync _q,
float complex * _x,
unsigned int _n)
{
unsigned int i;
for (i=0; i<_n; i++) {
#if DEBUG_FLEXFRAMESYNC
if (_q->debug_enabled)
windowcf_push(_q->debug_x, _x[i]);
#endif
switch (_q->state) {
case STATE_DETECTFRAME:
// detect frame (look for p/n sequence)
flexframesync_execute_seekpn(_q, _x[i]);
break;
case STATE_RXPN:
// receive p/n sequence symbols
flexframesync_execute_rxpn(_q, _x[i]);
break;
case STATE_RXHEADER:
// receive header sequence symbols
flexframesync_execute_rxheader(_q, _x[i]);
break;
case STATE_RXPAYLOAD:
// receive payload symbols
flexframesync_execute_rxpayload(_q, _x[i]);
break;
default:
fprintf(stderr,"error: flexframesync_exeucte(), unknown/unsupported state\n");
exit(1);
}
}
}
// execute frame synchronizer
// _q : frame synchronizer object
// _x : input sample array [size: _n x 1]
// _n : number of input samples
void flexframesync_execute(flexframesync _q,
float complex * _x,
unsigned int _n)
{
unsigned int i;
for (i=0; i<_n; i++) {
#if DEBUG_FLEXFRAMESYNC
// write samples to debug buffer
// NOTE: the debug_qdetector_flush prevents samples from being written twice
if (_q->debug_enabled && !_q->debug_qdetector_flush)
windowcf_push(_q->debug_x, _x[i]);
#endif
switch (_q->state) {
case FLEXFRAMESYNC_STATE_DETECTFRAME:
// detect frame (look for p/n sequence)
flexframesync_execute_seekpn(_q, _x[i]);
break;
case FLEXFRAMESYNC_STATE_RXPREAMBLE:
// receive p/n sequence symbols
flexframesync_execute_rxpreamble(_q, _x[i]);
break;
case FLEXFRAMESYNC_STATE_RXHEADER:
// receive header symbols
flexframesync_execute_rxheader(_q, _x[i]);
break;
case FLEXFRAMESYNC_STATE_RXPAYLOAD:
// receive payload symbols
flexframesync_execute_rxpayload(_q, _x[i]);
break;
default:
fprintf(stderr,"error: flexframesync_exeucte(), unknown/unsupported state\n");
exit(1);
}
}
}
