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Pan.h

/*
      Pan.h
      
      Copyright 2004 Tim Goetze <tim@quitte.de>
      
      http://quitte.de/dsp/

      panorama with width control

*/
/*
      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 _PAN_H_
#define _PAN_H_

#include "dsp/Delay.h"
#include "dsp/OnePole.h"

class PanTap
{
      public:
            int t;
            DSP::OnePoleLP damper;

            d_sample get (DSP::Delay & delay)
                  {
                        return damper.process (delay[t]);
                  }

            void reset (double c)
                  {
                        damper.set_f (c);
                        damper.reset();
                  }
};

class Pan
{
      public:
            double fs;
            d_sample pan;

            d_sample gain_l, gain_r;
            d_sample normal;

            DSP::Delay delay;
            PanTap tap;

            template <sample_func_t F>
            void one_cycle (int frames);

            inline void set_pan (d_sample);

      public:
            static PortInfo port_info [];
            d_sample * ports [7];

            d_sample adding_gain;

            void init (double _fs);

            void activate();

            void run (int n)
                  {
                        one_cycle<store_func> (n);
                  }
            
            void run_adding (int n)
                  {
                        one_cycle<adding_func> (n);
                  }
};

#endif /* _PAN_H_ */

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