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 "HalfWaveRectifier.h" 00020 00021 using std::ostringstream; 00022 using namespace Marsyas; 00023 00024 HalfWaveRectifier::HalfWaveRectifier(mrs_string name): MarSystem("HalfWaveRectifier",name) 00025 { 00026 } 00027 00028 00029 HalfWaveRectifier::~HalfWaveRectifier() 00030 { 00031 } 00032 00033 MarSystem* 00034 HalfWaveRectifier::clone() const 00035 { 00036 return new HalfWaveRectifier(*this); 00037 } 00038 00039 void 00040 HalfWaveRectifier::myUpdate(MarControlPtr sender) 00041 { 00043 MarSystem::myUpdate(sender); 00044 } 00045 00046 void 00047 HalfWaveRectifier::myProcess(realvec& in, realvec& out) 00048 { 00049 mrs_natural o,t; 00050 // Positive values are kept, negative values are trimmed to zero. 00051 for (t = 0; t < inSamples_; t++) 00052 { 00053 for (o = 0; o < inObservations_; o++) 00054 { 00055 out(o, t) = (in(o, t) > 0) ? in(o, t) : 0; 00056 } 00057 } 00058 }