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sdrangel/plugins/channelrx/demoddatv/datvgauge.h

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2021 Edouard Griffiths, F4EXB //
// using LeanSDR Framework (C) 2016 F4DAV //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef DATVGAUGE_H
#define DATVGAUGE_H
#include <QLabel>
#include <QString>
#include "leansdr/framework.h"
#include "leansdr/sdr.h"
#include "gui/levelmeter.h"
namespace leansdr {
struct datvgauge: runnable
{
leansdr::pipereader<leansdr::f32> m_in;
QLabel *m_label;
LevelMeterSignalDB *m_levelMeter;
static const int m_nbAvg = 10;
leansdr::f32 m_samples[m_nbAvg];
leansdr::f32 m_sum;
int m_index;
datvgauge(
scheduler *sch,
leansdr::pipebuf<leansdr::f32> &in,
QLabel *label = nullptr,
LevelMeterSignalDB *levelMeter = nullptr,
const char *_name = nullptr
) :
runnable(sch, _name ? _name : in.name),
m_in(in),
m_label(label),
m_levelMeter(levelMeter)
{
std::fill(m_samples, m_samples+m_nbAvg, 0);
m_sum = 0;
m_index = 0;
}
virtual void run()
{
while (m_in.readable() >= 1)
{
leansdr::f32 *p = m_in.rd();
leansdr::f32& oldest = m_samples[m_index++];
m_sum += *p - oldest;
oldest = *p;
leansdr::f32 avg = m_sum/m_nbAvg;
m_levelMeter->levelChanged(avg/30.0, *p/30.0, m_nbAvg);
m_label->setText(QString("%1").arg(avg, 0, 'f', 1));
m_in.read(1);
if (m_index == m_nbAvg) {
m_index = 0;
}
}
}
};
} // namespace leansdr
#endif // DATVGAUGE_H