Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/Subtract.cpp
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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 "Subtract.h"
00020 #include "../common_source.h"
00021 
00022 
00023 using namespace std;
00024 using namespace Marsyas;
00025 
00026 Subtract::Subtract(mrs_string name):MarSystem("Subtract", name)
00027 {
00028   addControls();
00029 }
00030 
00031 Subtract::Subtract(const Subtract& a) : MarSystem(a)
00032 {
00033 
00034 }
00035 
00036 
00037 Subtract::~Subtract()
00038 {
00039 }
00040 
00041 MarSystem*
00042 Subtract::clone() const
00043 {
00044   return new Subtract(*this);
00045 }
00046 
00047 void
00048 Subtract::addControls()
00049 {
00050 
00051 }
00052 
00053 void
00054 Subtract::myUpdate(MarControlPtr sender)
00055 {
00056   (void) sender;  //suppress warning of unused parameter(s)
00057   MRSDIAG("Subtract.cpp - Subtract:myUpdate");
00058 
00059   ctrl_onSamples_->setValue(ctrl_inSamples_, NOUPDATE);
00060   ctrl_onObservations_->setValue(1, NOUPDATE);
00061   ctrl_osrate_->setValue(ctrl_israte_, NOUPDATE);
00062   ctrl_onObsNames_->setValue(ctrl_inObsNames_, NOUPDATE);
00063 }
00064 
00065 void
00066 Subtract::myProcess(realvec& in, realvec& out)
00067 {
00068   for (mrs_natural t = 0; t < inSamples_; t++)
00069     out(0,t) = in(0,t) - in(1,t);
00070 }