Rivendellaudio/lib/rdmeteraverage.cpp
Fred Gleason 698b475933 2016-05-24 Fred Gleason <fredg@paravelsystems.com>
* Removed all CVS tags.
	* Removed 'const char *name' parameter from all QObject contructors.
2016-05-24 13:13:26 -04:00

49 lines
1.3 KiB
C++

// rdmeteraverage.cpp
//
// Average sucessive levels for a meter.
//
// (C) Copyright 2007,2016 Fred Gleason <fredg@paravelsystems.com>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
#include <rdmeteraverage.h>
RDMeterAverage::RDMeterAverage(int maxsize)
{
avg_maxsize=maxsize;
avg_total=0.0;
}
double RDMeterAverage::average() const
{
if(avg_values.size()==0) {
return 0.0;
}
return avg_total/((double)avg_values.size());
}
void RDMeterAverage::addValue(double value)
{
avg_total+=value;
avg_values.push(value);
int size=avg_values.size()-avg_maxsize;
for(int i=0;i<size;i++) {
avg_total-=avg_values.front();
avg_values.pop();
}
}