Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/InvSpectrum.cpp
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00001 /*
00002 ** Copyright (C) 1998-2005 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 "InvSpectrum.h"
00020 
00021 using std::ostringstream;
00022 using namespace Marsyas;
00023 
00024 InvSpectrum::InvSpectrum(mrs_string name):MarSystem("InvSpectrum",name)
00025 {
00026   //type_ = "InvSpectrum";
00027   //name_ = name;
00028 }
00029 
00030 InvSpectrum::~InvSpectrum()
00031 {
00032 }
00033 
00034 
00035 MarSystem*
00036 InvSpectrum::clone() const
00037 {
00038   return new InvSpectrum(*this);
00039 }
00040 
00041 
00042 void
00043 InvSpectrum::myUpdate(MarControlPtr sender)
00044 {
00045   (void) sender;  //suppress warning of unused parameter(s)
00046   setctrl("mrs_natural/onSamples", getctrl("mrs_natural/inObservations"));
00047   setctrl("mrs_natural/onObservations", getctrl("mrs_natural/inSamples"));
00048   setctrl("mrs_real/osrate", getctrl("mrs_real/israte")->to<mrs_real>() * getctrl("mrs_natural/inObservations")->to<mrs_natural>());
00049 
00050   tempVec_.create(getctrl("mrs_natural/onSamples")->to<mrs_natural>());
00051 }
00052 
00053 void
00054 InvSpectrum::myProcess(realvec& in, realvec& out)
00055 {
00056   mrs_natural o,t;
00057 
00058   for(o=0 ; o<onObservations_; o++)
00059   {
00060     for (t=0; t < onSamples_; t++)
00061       tempVec_(t) = in(t,o);
00062 
00063     mrs_real *tmp = tempVec_.getData();
00064     myfft_.rfft(tmp, onSamples_/2, FFT_INVERSE);
00065     for (t=0; t < onSamples_; t++)
00066       out(o,t) = tempVec_(t);
00067 
00068   }
00069 }
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