VCO.h

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/*
        VCO.h
        
        Copyright 2004-5 Tim Goetze <tim@quitte.de>
        
        http://quitte.de/dsp/
 
        an oversampled triangle/saw/square oscillator, and a combination of two
        such oscillators with hard sync.
 
*/
/*
        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
        of the License, 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., 59 Temple Place - Suite 330, Boston, MA
        02111-1307, USA or point your web browser to http://www.gnu.org.
*/
 
#ifndef _VCO_H_
#define _VCO_H_
 
#include "dsp/util.h"
#include "dsp/VCO.h"
 
#include "dsp/FIR.h"
#include "dsp/sinc.h"
#include "dsp/windows.h"
 
class VCOs
: public Plugin
{
        public:
                sample_t f, gain;
 
                /* ok to just change these as you please, 4/32 works ok, sortof. */
                enum {
                        OVERSAMPLE = 8,
                        FIR_SIZE = 64, 
                };
 
                DSP::TriSawSquare vco;
 
                /* downsampling filter */
                DSP::FIR down;
 
                template <sample_func_t F>
                        void one_cycle (int frames);
 
        public:
                static PortInfo port_info[];
 
                VCOs()
                        : down (FIR_SIZE)
                        { }
 
                void init();
                void activate()
                        {
                                gain = *ports[3];
                                down.reset();
                                vco.reset();
                        }
 
                void run (int n)
                        {
                                one_cycle<store_func> (n);
                        }
                
                void run_adding (int n)
                        {
                                one_cycle<adding_func> (n);
                        }
};
 
/* //////////////////////////////////////////////////////////////////////// */
 
class VCOd
: public Plugin
{
        public:
                double fs;
                sample_t f, gain;
 
                /* ok to just change these as you please, 4/32 works ok, sortof. */
                enum {
                        OVERSAMPLE = 8,
                        FIR_SIZE = 64, 
                };
 
                DSP::VCO2 vco;
 
                /* downsampling filter */
                DSP::FIR down;
 
                template <sample_func_t F>
                void one_cycle (int frames);
 
        public:
                static PortInfo port_info[];
 
                VCOd()
                        : down (FIR_SIZE)
                        { }
 
                void init();
                void activate()
                        {
                                gain = *ports[8];
                                down.reset();
                                vco.reset();
                        }
 
                void run (int n)
                        {
                                one_cycle<store_func> (n);
                        }
                
                void run_adding (int n)
                        {
                                one_cycle<adding_func> (n);
                        }
};
 
#endif /* _VCO_H_ */