GNU Radio 3.7.1 C++ API
|
00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2006 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 00023 #ifndef INCLUDED_ATSC_FPLL_H 00024 #define INCLUDED_ATSC_FPLL_H 00025 00026 #include <gnuradio/atsc/api.h> 00027 #include <gnuradio/sync_block.h> 00028 #include <gnuradio/nco.h> 00029 #include <gnuradio/filter/single_pole_iir.h> 00030 #include <gnuradio/analog/agc.h> 00031 #include <stdio.h> 00032 #include <gnuradio/atsc/diag_output_impl.h> 00033 00034 using namespace gr; 00035 00036 class atsc_fpll; 00037 typedef boost::shared_ptr<atsc_fpll> atsc_fpll_sptr; 00038 00039 ATSC_API atsc_fpll_sptr atsc_make_fpll(); 00040 00041 /*! 00042 * \brief ATSC FPLL (2nd Version) 00043 * \ingroup atsc 00044 * 00045 * A/D --> GrFIRfilterFFF ----> GrAtscFPLL ----> 00046 * 00047 * We use GrFIRfilterFFF to bandpass filter the signal of interest. 00048 * 00049 * This class accepts a single real input and produces a single real output 00050 */ 00051 00052 class ATSC_API atsc_fpll : public gr::sync_block 00053 { 00054 friend ATSC_API atsc_fpll_sptr atsc_make_fpll(); 00055 00056 atsc_fpll(); 00057 00058 public: 00059 00060 int work (int noutput_items, 00061 gr_vector_const_void_star &input_items, 00062 gr_vector_void_star &output_items); 00063 00064 void reset() { /* nop */ } 00065 00066 void initialize () ; 00067 00068 protected: 00069 00070 double initial_freq; 00071 double initial_phase; 00072 bool debug_no_update; 00073 gr::nco<float,float> nco; 00074 analog::kernel::agc_ff agc; // automatic gain control 00075 filter::single_pole_iir<float,float,float> afci; 00076 filter::single_pole_iir<float,float,float> afcq; 00077 00078 00079 }; 00080 00081 00082 #endif /* INCLUDED_ATSC_FPLL_H */