Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/AimLocalMax.h
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00001 /*
00002 ** Copyright (C) 1998-2006 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_AIMLOCALMAX_H
00020 #define MARSYAS_AIMLOCALMAX_H
00021 
00022 #include <marsyas/system/MarSystem.h>
00023 
00024 // sness - TODO - Eventually make these realvecs.  However, in the
00025 // existing code there is quite a bit of stuff that involves STL
00026 // methods, so I thought it would be safer to use STL for now.
00027 #include <vector>
00028 
00029 namespace Marsyas
00030 {
00046 class marsyas_EXPORT AimLocalMax: public MarSystem
00047 {
00048 private:
00049   void myUpdate(MarControlPtr sender);
00050 
00051   // Reset all internal state variables to their initial values
00052   void ResetInternal();
00053 
00054   // Prepare the module
00055   bool InitializeInternal();
00056 
00057   // Does the MarSystem need initialization?
00058   bool is_initialized;
00059 
00060   // What changes cause it to need initialization?
00061   mrs_real initialized_israte;
00062 
00063   // Does the MarSystem need reset?
00064   bool is_reset;
00065 
00066   // What changes cause it to need a reset?
00067   mrs_natural reset_inobservations;
00068 
00069   MarControlPtr ctrl_decay_time_ms_;
00070   MarControlPtr ctrl_timeout_ms_;
00071 
00072   int strobe_timeout_samples_;
00073   int strobe_decay_samples_;
00074 
00075   std::vector<double> threshold_;
00076   std::vector<double> decay_constant_;
00077 
00078   std::vector<double> prev_sample_;
00079   std::vector<double> curr_sample_;
00080   std::vector<double> next_sample_;
00081 
00082   std::vector<double> strobe_count_;
00083   std::vector<int> last_strobe_;
00084 
00085   // The actual number of signal channels in the input.  The output
00086   // from PZFC (and HCL) is a realvec with the first half of
00087   // observations being the signal, and the second half being the
00088   // channels.
00089   mrs_natural channel_count_;
00090 
00091 public:
00092   AimLocalMax(std::string name);
00093   AimLocalMax(const AimLocalMax& a);
00094 
00095   ~AimLocalMax();
00096   MarSystem* clone() const;
00097   void addControls();
00098 
00099   void myProcess(realvec& in, realvec& out);
00100 };
00101 
00102 }//namespace marsyas
00103 
00104 #endif