Marsyas  0.2
/home/gperciva/src/marsyas/src/marsyas/DPWOsc.h
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 "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