mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-16 13:21:50 -05:00
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2020 Jon Beniston, M7RCE //
|
|
// //
|
|
// 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/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#define _USE_MATH_DEFINES
|
|
#include <cmath>
|
|
#include "fmpreemphasisdialog.h"
|
|
#include "ui_fmpreemphasisdialog.h"
|
|
|
|
// Convert from s to us
|
|
#define TAU_SCALE 1000000.0
|
|
|
|
FMPreemphasisDialog::FMPreemphasisDialog(float tau, float highFreq, QWidget* parent) :
|
|
QDialog(parent),
|
|
ui(new Ui::FMPreemphasisDialog)
|
|
{
|
|
ui->setupUi(this);
|
|
ui->tau->setValue(tau*TAU_SCALE);
|
|
ui->lowFreq->setValue(1.0/(2.0*M_PI*tau));
|
|
ui->highFreq->setValue(highFreq);
|
|
}
|
|
|
|
FMPreemphasisDialog::~FMPreemphasisDialog()
|
|
{
|
|
delete ui;
|
|
}
|
|
|
|
void FMPreemphasisDialog::accept()
|
|
{
|
|
m_tau = ui->tau->value()/TAU_SCALE;
|
|
m_highFreq = ui->highFreq->value();
|
|
|
|
QDialog::accept();
|
|
}
|
|
|
|
void FMPreemphasisDialog::on_tau_valueChanged(double value)
|
|
{
|
|
// Set corresponding low frequency
|
|
ui->lowFreq->blockSignals(true);
|
|
ui->lowFreq->setValue(1.0/(2.0*M_PI*(value/TAU_SCALE)));
|
|
updateCombo();
|
|
ui->lowFreq->blockSignals(false);
|
|
}
|
|
|
|
void FMPreemphasisDialog::on_lowFreq_valueChanged(double value)
|
|
{
|
|
// Set corresponding tau
|
|
ui->tau->blockSignals(true);
|
|
ui->tau->setValue(TAU_SCALE*1.0/(2.0*M_PI*value));
|
|
updateCombo();
|
|
ui->tau->blockSignals(false);
|
|
}
|
|
|
|
void FMPreemphasisDialog::updateCombo()
|
|
{
|
|
double value = ui->tau->value();
|
|
if (value == 531.0)
|
|
ui->preset->setCurrentIndex(0);
|
|
else if (value == 75.0)
|
|
ui->preset->setCurrentIndex(1);
|
|
else if (value == 50.0)
|
|
ui->preset->setCurrentIndex(2);
|
|
else
|
|
ui->preset->setCurrentIndex(3);
|
|
}
|
|
|
|
void FMPreemphasisDialog::on_preset_currentIndexChanged(int value)
|
|
{
|
|
if (value == 0)
|
|
{
|
|
// Narrowband FM
|
|
ui->lowFreq->setValue(300.0);
|
|
ui->highFreq->setValue(3000.0);
|
|
}
|
|
else if (value == 1)
|
|
{
|
|
// Broadcast FM (US)
|
|
ui->tau->setValue(75.0);
|
|
ui->highFreq->setValue(12000.0);
|
|
}
|
|
else if (value == 2)
|
|
{
|
|
// Broadcast FM (EU)
|
|
ui->tau->setValue(50.0);
|
|
ui->highFreq->setValue(12000.0);
|
|
}
|
|
}
|