3 * Copyright 2006 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
22 #ifndef INCLUDED_ATSC_FPLL_H
23 #define INCLUDED_ATSC_FPLL_H
25 #include <gr_sync_block.h>
27 #include <gr_single_pole_iir.h>
28 #include <gri_agc_ff.h>
30 #include <atsci_diag_output.h>
33 typedef boost::shared_ptr<atsc_fpll> atsc_fpll_sptr;
35 atsc_fpll_sptr atsc_make_fpll();
38 * \brief ATSC FPLL (2nd Version)
41 * A/D --> GrFIRfilterFFF ----> GrAtscFPLL ---->
43 * We use GrFIRfilterFFF to bandpass filter the signal of interest.
45 * This class accepts a single real input and produces a single real output
48 class atsc_fpll : public gr_sync_block
50 friend atsc_fpll_sptr atsc_make_fpll();
56 int work (int noutput_items,
57 gr_vector_const_void_star &input_items,
58 gr_vector_void_star &output_items);
60 void reset() { /* nop */ }
69 gr_nco<float,float> nco;
70 gri_agc_ff agc; // automatic gain control
71 gr_single_pole_iir<float,float,float> afci;
72 gr_single_pole_iir<float,float,float> afcq;
78 #endif /* INCLUDED_ATSC_FPLL_H */