GNU Radio 3.5.1 C++ API
noaa_hrpt_pll_cf.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2009 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_NOAA_HRPT_PLL_CF_H
00024 #define INCLUDED_NOAA_HRPT_PLL_CF_H
00025 
00026 #include <noaa_api.h>
00027 #include <gr_sync_block.h>
00028 
00029 class noaa_hrpt_pll_cf;
00030 typedef boost::shared_ptr<noaa_hrpt_pll_cf> noaa_hrpt_pll_cf_sptr;
00031 
00032 NOAA_API noaa_hrpt_pll_cf_sptr
00033 noaa_make_hrpt_pll_cf(float alpha, float beta, float max_offset);
00034 
00035 class NOAA_API noaa_hrpt_pll_cf : public gr_sync_block
00036 {
00037   friend NOAA_API noaa_hrpt_pll_cf_sptr noaa_make_hrpt_pll_cf(float alpha, float beta, float max_offset);
00038   noaa_hrpt_pll_cf(float alpha, float beta, float max_offset);
00039 
00040   float d_alpha;                // 1st order loop constant
00041   float d_beta;                 // 2nd order loop constant
00042   float d_max_offset;           // Maximum frequency offset, radians/sample
00043   float d_phase;                // Instantaneous carrier phase
00044   float d_freq;                 // Instantaneous carrier frequency, radians/sample
00045 
00046  public:
00047   virtual int work(int noutput_items,
00048                    gr_vector_const_void_star &input_items,
00049                    gr_vector_void_star &output_items);
00050 
00051   void set_alpha(float alpha) { d_alpha = alpha; }
00052   void set_beta(float beta) { d_beta = beta; }
00053   void set_max_offset(float max_offset) { d_max_offset = max_offset; }
00054 };
00055 
00056 #endif /* INCLUDED_NOAA_HRPT_PLL_CF_H */