Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/MemorySource.cpp
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00001 /*
00002 ** Copyright (C) 1998-2007 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 "MemorySource.h"
00020 #include "../common_source.h"
00021 
00022 using std::ostringstream;
00023 using namespace Marsyas;
00024 
00025 MemorySource::MemorySource(mrs_string name):MarSystem("MemorySource",name)
00026 {
00027   //type_ = "MemorySource";
00028   //name_ = name;
00029 
00030   count_= 0;
00031 
00032   addControls();
00033 }
00034 
00035 
00036 MemorySource::~MemorySource()
00037 {
00038 }
00039 
00040 
00041 MarSystem*
00042 MemorySource::clone() const
00043 {
00044   return new MemorySource(*this);
00045 }
00046 
00047 void
00048 MemorySource::addControls()
00049 {
00050   samplesToUse_ = (mrs_natural)MRS_DEFAULT_SLICE_NSAMPLES;
00051   addctrl("mrs_natural/samplesToUse", (mrs_natural)MRS_DEFAULT_SLICE_NSAMPLES);
00052   setctrlState("mrs_natural/samplesToUse", true);
00053   addctrl("mrs_bool/done", false);
00054   setctrlState("mrs_bool/done", true);
00055 }
00056 
00057 
00058 void
00059 MemorySource::myUpdate(MarControlPtr sender)
00060 {
00061   (void) sender;  //suppress warning of unused parameter(s)
00062   MRSDIAG("MemorySource.cpp - MemorySource:myUpdate");
00063 
00064   setctrl("mrs_natural/onObservations", getctrl("mrs_natural/inObservations")  );
00065   setctrl("mrs_real/osrate", getctrl("mrs_real/israte")->to<mrs_real>());
00066   samplesToUse_ = getctrl("mrs_natural/samplesToUse")->to<mrs_natural>();
00067 
00068   if( getctrl("mrs_bool/done")->isTrue()) {
00069     count_ = 0;
00070     setctrl("mrs_bool/done", false);
00071   }
00072 }
00073 
00074 void
00075 MemorySource::myProcess(realvec& in, realvec& out)
00076 {
00077   mrs_natural t,o;
00078   //checkFlow(in,out);
00079 
00080   if( count_ < 1 + (samplesToUse_ -1) / onSamples_ ) {
00081 
00082     for (o=0; o < inObservations_; o++) {
00083       for (t = 0 ; t < onSamples_ && count_*onSamples_+t < samplesToUse_ ; t++)
00084       {
00085         out(o,t) = in(o,count_*onSamples_+t);
00086       }
00087 
00088       for( ; t < onSamples_ ; t++ )
00089       {
00090         out(o,t) = 0.;
00091       }
00092     }
00093     count_++;
00094   }
00095 
00096   if( count_ >= 1 + (samplesToUse_ -1) / onSamples_ )
00097     setctrl("mrs_bool/done", true);
00098 }