carrier_nco.h

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namespace SPUC {
// Copyright(c) 1993-1996 Tony Kirke
/*
 * SPUC - Signal processing using C++ - A DSP library
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef CNCO
#define CNCO
#include <spuc.h>
#include <complex.h>

class carrier_nco
{
protected:
        unsigned long acc;
        unsigned long fcw;
        unsigned long new_fcw;
        unsigned long phase;
public:
        inline carrier_nco(void) {acc = fcw = new_fcw = phase = 0;}
        inline void set_frequency(unsigned long freq) { fcw = freq; }
        inline void reset_frequency(unsigned long freq) { new_fcw = fcw = freq; }
        inline long get_phase(void) { return(phase);}
        complex<long> clock(long loop_filter_out=0, int load=1);
};
#endif
} // namespace SPUC 

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