n1gp
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/**
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* @file qtdsp_signalMeter.cpp
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* @brief Signal Meter class for QtDSP
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* @author Hermann von Hasseln, DL3HVH
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* @version 0.1
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* @date 2012-09-19
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*/
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/*
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* Copyright (C) 2007, 2008, Philip A Covington, N8VB
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*
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* adapted for QtDSP by (C) 2012 Hermann von Hasseln, DL3HVH
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*
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* With Algorithms borrowed from DttSP
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* Copyright (C) 2004, 2005, 2006 by Frank Brickle, AB2KT and Bob McGwier, N4HY
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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 Library General Public License version 2 as
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* published by the Free Software Foundation
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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 for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "qtdsp_signalMeter.h"
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SignalMeter::SignalMeter(QObject *parent, int size)
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: QObject(parent)
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, set(Settings::instance())
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, m_size(size)
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, m_instValue(-80.0)
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//, m_correction(59.0f)
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, m_correction(-8.0f)
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{
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}
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SignalMeter::~SignalMeter() {
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}
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void SignalMeter::ProcessBlock(CPX &in, int bsize) {
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Q_UNUSED(bsize)
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float tmp = 0.0f;
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for (int i = 0; i < m_size; i++)
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tmp += (in.at(i).re * in.at(i).re + in.at(i).im * in.at(i).im);
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m_instValue = (float)(10.0f * log10(tmp + 1.5E-45));
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}
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float SignalMeter::getInstFValue() const {
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return m_instValue + m_correction;
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}
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float SignalMeter::getCorrection() const {
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return m_correction;
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}
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void SignalMeter::setCorrection(const float value) {
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if (m_correction == value) return;
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m_correction = value;
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}
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