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https://github.com/f4exb/sdrangel.git
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84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021 Edouard Griffiths, F4EXB //
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// using LeanSDR Framework (C) 2016 F4DAV //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef DATVGAUGE_H
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#define DATVGAUGE_H
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#include <QLabel>
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#include <QString>
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#include "leansdr/framework.h"
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#include "leansdr/sdr.h"
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#include "gui/levelmeter.h"
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namespace leansdr {
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struct datvgauge: runnable
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{
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leansdr::pipereader<leansdr::f32> m_in;
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QLabel *m_label;
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LevelMeterSignalDB *m_levelMeter;
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static const int m_nbAvg = 5;
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leansdr::f32 m_samples[m_nbAvg];
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leansdr::f32 m_sum;
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int m_index;
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datvgauge(
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scheduler *sch,
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leansdr::pipebuf<leansdr::f32> &in,
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QLabel *label = nullptr,
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LevelMeterSignalDB *levelMeter = nullptr,
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const char *_name = nullptr
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) :
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runnable(sch, _name ? _name : in.name),
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m_in(in),
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m_label(label),
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m_levelMeter(levelMeter)
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{
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std::fill(m_samples, m_samples+m_nbAvg, 0);
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m_sum = 0;
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m_index = 0;
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}
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virtual void run()
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{
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while (m_in.readable() >= 1)
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{
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leansdr::f32 *p = m_in.rd();
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leansdr::f32& oldest = m_samples[m_index++];
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m_sum += *p - oldest;
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oldest = *p;
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leansdr::f32 avg = m_sum/m_nbAvg;
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m_index = (m_index + 1) % m_nbAvg;
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m_levelMeter->levelChanged(avg/30.0, *p/30.0, m_nbAvg);
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m_label->setText(QString("%1").arg(avg, 0, 'f', 1));
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m_in.read(1);
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if (m_index == m_nbAvg) {
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m_index = 0;
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}
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}
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}
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};
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} // namespace leansdr
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#endif // DATVGAUGE_H
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