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/* -*- c++ -*- */
/*
* Copyright 2006 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_ATSC_FPLL_H
#define INCLUDED_ATSC_FPLL_H
#include <gr_sync_block.h>
#include <gr_nco.h>
#include <gr_single_pole_iir.h>
#include <gri_agc_ff.h>
#include <stdio.h>
#include <atsci_diag_output.h>
class atsc_fpll;
typedef boost::shared_ptr<atsc_fpll> atsc_fpll_sptr;
atsc_fpll_sptr atsc_make_fpll();
/*!
* \brief ATSC FPLL (2nd Version)
* \ingroup atsc
*
* A/D --> GrFIRfilterFFF ----> GrAtscFPLL ---->
*
* We use GrFIRfilterFFF to bandpass filter the signal of interest.
*
* This class accepts a single real input and produces a single real output
*/
class atsc_fpll : public gr_sync_block
{
friend atsc_fpll_sptr atsc_make_fpll();
atsc_fpll();
public:
int work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
void reset() { /* nop */ }
void initialize () ;
protected:
double initial_freq;
double initial_phase;
bool debug_no_update;
gr_nco<float,float> nco;
gri_agc_ff agc; // automatic gain control
gr_single_pole_iir<float,float,float> afci;
gr_single_pole_iir<float,float,float> afcq;
};
#endif /* INCLUDED_ATSC_FPLL_H */
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