HRTF.h

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/*
        HRTF.h
        
        Copyright 2002-5 Tim Goetze <tim@quitte.de>
        
        http://quitte.de/dsp/
 
        IIR filtering based on HRTF data sets
 
*/
/*
        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 _HRTF_H_
#define _HRTF_H_
 
#include "dsp/util.h"
 
class HRTF
: public Plugin
{
        public:
                int pan;
                int n, h;
 
                double x[32];
                
                struct {
                        double * a, * b;
                        double y[32];
                } left, right;
                
                void set_pan (int p);
 
                template <sample_func_t F>
                void one_cycle (int frames);
 
        public:
                static PortInfo port_info [];
 
                void init();
                void activate()
                        {
                                set_pan ((int) *ports[1]);
                        }
 
                void run (int n)
                        {
                                one_cycle<store_func> (n);
                        }
                
                void run_adding (int n)
                        {
                                one_cycle<adding_func> (n);
                        }
};
 
#endif /* _HRTF_H_ */