Marsyas
0.6.0-alpha
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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_AIMHCL_H 00020 #define MARSYAS_AIMHCL_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 AimHCL: 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_lowpass_cutoff; 00062 00063 // Does the MarSystem need reset? 00064 bool is_reset; 00065 00066 // What changes cause it to need a reset? 00067 mrs_natural reseted_inobservations; 00068 mrs_real reseted_lowpass_order; 00069 00070 MarControlPtr ctrl_do_lowpass_; // Do lowpass filtering? 00071 MarControlPtr ctrl_do_log_; // Do log compression? 00072 MarControlPtr ctrl_lowpass_cutoff_; // Cutoff frequency for lowpass filter 00073 MarControlPtr ctrl_lowpass_order_; // Order of Lowpass Filter 00074 00075 // int channel_count_; // Internal record of the number of channels in the input 00076 double time_constant_; // Time constant corresponsing to the lowpass filter cutoff freqency 00077 00078 // Lowpass filter state variables 00079 double xn_; 00080 double yn_; 00081 std::vector<std::vector<double> > yns_; 00082 00083 public: 00084 AimHCL(std::string name); 00085 00086 ~AimHCL(); 00087 MarSystem* clone() const; 00088 void addControls(); 00089 00090 void myProcess(realvec& in, realvec& out); 00091 }; 00092 00093 }//namespace marsyas 00094 00095 #endif