Marsyas  0.6.0-alpha
/usr/src/RPM/BUILD/marsyas-0.6.0/src/marsyas/marsystems/Timer.cpp
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00001 /*
00002 ** Copyright (C) 1998-2014 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 "Timer.h"
00020 #include "../common_source.h"
00021 
00022 using namespace Marsyas;
00023 
00024 Timer::Timer(mrs_string name):MarSystem("Timer", name)
00025 {
00026   addControls();
00027 }
00028 
00029 Timer::Timer(const Timer& a) : MarSystem(a)
00030 {
00031   ctrl_time_ = getctrl("mrs_real/time");
00032   ctrl_trigger_ = getctrl("mrs_bool/trigger");
00033 }
00034 
00035 Timer::~Timer()
00036 {
00037 }
00038 
00039 MarSystem*
00040 Timer::clone() const
00041 {
00042   return new Timer(*this);
00043 }
00044 
00045 void
00046 Timer::addControls()
00047 {
00048   //Add specific controls needed by this MarSystem.
00049   addctrl("mrs_real/time", 0.0, ctrl_time_);
00050   addctrl("mrs_bool/trigger", false, ctrl_trigger_);
00051 }
00052 
00053 
00054 void
00055 Timer::myUpdate(MarControlPtr sender)
00056 {
00057   // no change to network flow
00058   MarSystem::myUpdate(sender);
00059 }
00060 
00061 void
00062 Timer::myProcess(realvec& in, realvec& out)
00063 {
00064 
00065   if (trigger_duration_ == 0.0)
00066       ctrl_trigger_->setValue(false);
00067 
00068   time_ += inSamples_ / israte_;
00069   ctrl_time_->setValue(time_);  
00070   trigger_duration_ += inSamples_ / israte_;
00071 
00072 
00073   if (trigger_duration_ > 2.0) 
00074     {
00075       ctrl_trigger_->setValue(true);
00076       trigger_duration_ = 0.0;
00077       // time_ = 0.0;
00078     }
00079 
00080 
00081 
00082   for (mrs_natural o=0; o < inObservations_; o++)
00083   {
00084     for (mrs_natural t = 0; t < inSamples_; t++)
00085     {
00086       out(o,t) = in(o,t);
00087     }
00088   }
00089 }