gr_costas_loop_cc.h

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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 2, 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., 59 Temple Place - Suite 330,
00020  * Boston, MA 02111-1307, USA.
00021  */
00022 
00023 
00024 #ifndef INCLUDED_GR_COSTAS_LOOP_CC_H
00025 #define INCLUDED_GR_COSTAS_LOOP_CC_H
00026 
00027 #include <gr_sync_block.h>
00028 
00029 class gr_costas_loop_cc;
00030 typedef boost::shared_ptr<gr_costas_loop_cc> gr_costas_loop_cc_sptr;
00031 
00032 gr_costas_loop_cc_sptr gr_make_costas_loop_cc (float alpha, float beta,
00033                                                float max_freq, float min_freq, float ref_phase);
00034 
00039 class gr_costas_loop_cc : public gr_sync_block
00040 {
00041   friend gr_costas_loop_cc_sptr gr_make_costas_loop_cc (float alpha, float beta,
00042                                                         float max_freq, float min_freq, float ref_phase);
00043 
00044   float d_alpha, d_beta, d_max_freq, d_min_freq, d_phase, d_freq, d_ref_phase;
00045 
00046   gr_costas_loop_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase);
00047   float phase_detector(gr_complex sample,float ref_phase);
00048 
00049 public:
00050 
00051   int work (int noutput_items,
00052             gr_vector_const_void_star &input_items,
00053             gr_vector_void_star &output_items);
00054 };
00055 
00056 #endif

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