GNU Radio 3.5.3.2 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 #ifndef INCLUDED_ATSC_FPLL_H 00023 #define INCLUDED_ATSC_FPLL_H 00024 00025 #include <atsc_api.h> 00026 #include <gr_sync_block.h> 00027 #include <gr_nco.h> 00028 #include <gr_single_pole_iir.h> 00029 #include <gri_agc_ff.h> 00030 #include <stdio.h> 00031 #include <atsci_diag_output.h> 00032 00033 class atsc_fpll; 00034 typedef boost::shared_ptr<atsc_fpll> atsc_fpll_sptr; 00035 00036 ATSC_API atsc_fpll_sptr atsc_make_fpll(); 00037 00038 /*! 00039 * \brief ATSC FPLL (2nd Version) 00040 * \ingroup atsc 00041 * 00042 * A/D --> GrFIRfilterFFF ----> GrAtscFPLL ----> 00043 * 00044 * We use GrFIRfilterFFF to bandpass filter the signal of interest. 00045 * 00046 * This class accepts a single real input and produces a single real output 00047 */ 00048 00049 class ATSC_API atsc_fpll : public gr_sync_block 00050 { 00051 friend ATSC_API atsc_fpll_sptr atsc_make_fpll(); 00052 00053 atsc_fpll(); 00054 00055 public: 00056 00057 int work (int noutput_items, 00058 gr_vector_const_void_star &input_items, 00059 gr_vector_void_star &output_items); 00060 00061 void reset() { /* nop */ } 00062 00063 void initialize () ; 00064 00065 protected: 00066 00067 double initial_freq; 00068 double initial_phase; 00069 bool debug_no_update; 00070 gr_nco<float,float> nco; 00071 gri_agc_ff agc; // automatic gain control 00072 gr_single_pole_iir<float,float,float> afci; 00073 gr_single_pole_iir<float,float,float> afcq; 00074 00075 00076 }; 00077 00078 00079 #endif /* INCLUDED_ATSC_FPLL_H */