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 #include "Mean.h" 00020 #include "../common_source.h" 00021 00022 using std::ostringstream; 00023 using namespace Marsyas; 00024 00025 Mean::Mean(mrs_string name): MarSystem("Mean", name) 00026 { 00027 } 00028 00029 00030 Mean::~Mean() 00031 { 00032 } 00033 00034 00035 MarSystem* 00036 Mean::clone() const 00037 { 00038 return new Mean(*this); 00039 } 00040 00041 void 00042 Mean::myUpdate(MarControlPtr sender) 00043 { 00044 (void) sender; //suppress warning of unused parameter(s) 00045 MRSDIAG("Mean.cpp - Mean:myUpdate"); 00046 00047 ctrl_onSamples_->setValue((mrs_natural)1, NOUPDATE); 00048 ctrl_onObservations_->setValue(ctrl_inObservations_, NOUPDATE); 00049 ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE); 00050 00051 // Allocate memory for the row buffer. 00052 obsrow_.create(ctrl_inSamples_->to<mrs_natural>()); 00053 00054 //defaultUpdate(); [!] 00055 // \todo what is this doing here? 00056 inObservations_ = ctrl_inObservations_->to<mrs_natural>(); 00057 00058 // Add prefix to the observation names. 00059 mrs_string inObsNames = ctrl_inObsNames_->to<mrs_string>(); 00060 ctrl_onObsNames_->setValue(obsNamesAddPrefix(inObsNames, "Mean_"), NOUPDATE); 00061 } 00062 00063 void 00064 Mean::myProcess(realvec& in, realvec& out) 00065 { 00066 mrs_natural t,o; 00067 out.setval(0.0); 00068 for (o=0; o < inObservations_; o++) 00069 { 00070 for (t = 0; t < inSamples_; t++) 00071 { 00072 // Calculate mean 00073 obsrow_(t) = in(o,t); 00074 } 00075 out(o,0) = obsrow_.mean(); 00076 } 00077 // INEFFICIENT A LOT OF MEMORY COPYING AT EVERY TICK 00078 // out = in.meanObs(); 00079 }