Marsyas  0.5.0-beta1
/Users/jleben/code/marsyas/src/marsyas/marsystems/DPWOsc.h
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00001 /*
00002 ** Copyright (C) 1998-2010 George Tzanetakis <gtzan@cs.uvic.ca>
00003 **
00004 ** This program is free software; you can redistribute it and/or modify
00005 ** it under the terms of the GNU General Public License as published by
00006 ** the Free Software Foundation; either version 2 of the License, or
00007 ** (at your option) any later version.
00008 **
00009 ** This program is distributed in the hope that it will be useful,
00010 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 ** GNU General Public License for more details.
00013 **
00014 ** You should have received a copy of the GNU General Public License
00015 ** along with this program; if not, write to the Free Software
00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 */
00018 
00019 #ifndef MARSYAS_DPWOSC_H
00020 #define MARSYAS_DPWOSC_H
00021 
00022 #include <marsyas/system/MarSystem.h>
00023 
00024 namespace Marsyas
00025 {
00038 class DPWOsc: public MarSystem
00039 {
00040 private:
00041 
00042   class Differentiator
00043   {
00044   private:
00045     mrs_real x1;
00046   public:
00047 
00048     mrs_real operator()(mrs_real x)
00049     {
00050       mrs_real y = x - x1;
00051       x1 = x;
00052       return y;
00053     }
00054   };
00055 
00056   // Add specific controls needed by this MarSystem.
00057   void addControls();
00058 
00059   // Reads changed controls and sets up variables if necessary.
00060   void myUpdate(MarControlPtr sender);
00061 
00062   mrs_real currentValue_;
00063   mrs_real incr_;
00064   mrs_real cyclicRate_;
00065   mrs_bool cyclicIn_;
00066   mrs_real israte_;
00067   mrs_real frequency_;
00068   mrs_natural type_;
00069 
00070   mrs_real c_; // Amplitude scalar
00071 
00072   Differentiator df;
00073 
00074 public:
00075   // DPWOsc constructor.
00076   DPWOsc(std::string name);
00077 
00078   // DPWOsc copy constructor.
00079   DPWOsc(const DPWOsc& a);
00080 
00081   // DPWOsc destructor.
00082   ~DPWOsc();
00083 
00084   // Implementation of the MarSystem::clone() method.
00085   MarSystem* clone() const;
00086 
00087   // Implementation of the MarSystem::myProcess method.
00088   void myProcess(realvec& in, realvec& out);
00089 };
00090 
00091 }
00092 //namespace Marsyas
00093 
00094 #endif
00095 //MARSYAS_DPWOSC_H
00096