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/* -*- c++ -*- */
/*
* Gqrx SDR: Software defined radio receiver powered by GNU Radio and Qt
* http://gqrx.dk/
*
* Copyright 2011 Alexandru Csete OZ9AEC.
*
* Gqrx 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; either version 3, or (at your option)
* any later version.
*
* Gqrx 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 Gqrx; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <QMessageBox>
#include <QFileDialog>
#include <QFile>
#include <QDir>
#include <QDebug>
#include "afsk1200win.h"
#include "ui_afsk1200win.h"
Afsk1200Win::Afsk1200Win(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::Afsk1200Win)
{
ui->setupUi(this);
/* select font for text viewer */
#ifdef Q_OS_MAC
ui->textView->setFont(QFont("Monaco", 12));
#else
ui->textView->setFont(QFont("Monospace", 11));
#endif
/* Add right-aligned info button */
QWidget *spacer = new QWidget();
spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
ui->toolBar->addWidget(spacer);
ui->toolBar->addAction(ui->actionInfo);
/* AFSK1200 decoder */
decoder = new CAfsk12(this);
connect(decoder, SIGNAL(newMessage(QString)), ui->textView, SLOT(appendPlainText(QString)));
}
Afsk1200Win::~Afsk1200Win()
{
qDebug() << "AFSK1200 decoder destroyed.";
delete decoder;
delete ui;
}
/*! \brief Process new set of samples. */
void Afsk1200Win::process_samples(float *buffer, int length)
{
int overlap = 18;
int i;
for (i = 0; i < length; i++) {
tmpbuf.append(buffer[i]);
}
decoder->demod(tmpbuf.data(), length);
/* clear tmpbuf and store "overlap" */
tmpbuf.clear();
for (i = length-overlap; i < length; i++) {
tmpbuf.append(buffer[i]);
}
}
/*! \brief Catch window close events and emit signal so that main application can destroy us. */
void Afsk1200Win::closeEvent(QCloseEvent *ev)
{
Q_UNUSED(ev);
emit windowClosed();
}
/*! \brief User clicked on the Clear button. */
void Afsk1200Win::on_actionClear_triggered()
{
ui->textView->clear();
}
/*! \brief User clicked on the Save button. */
void Afsk1200Win::on_actionSave_triggered()
{
/* empty text view has blockCount = 1 */
if (ui->textView->blockCount() < 2) {
QMessageBox::warning(this, tr("Gqrx error"), tr("Nothing to save."),
QMessageBox::Ok, QMessageBox::Ok);
return;
}
QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"),
QDir::homePath(),
tr("Text Files (*.txt)"));
if (fileName.isEmpty()) {
qDebug() << "Save cancelled by user";
return;
}
QFile file(fileName);
if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
qDebug() << "Error creating file: " << fileName;
return;
}
QTextStream out(&file);
out << ui->textView->toPlainText();
file.close();
}
/*! \brief User clicked Info button. */
void Afsk1200Win::on_actionInfo_triggered()
{
QMessageBox::about(this, tr("About AFSK1200 Decoder"),
tr("<p>Gqrx AFSK1200 Decoder %1</p>"
"<p>The Gqrx AFSK1200 decoder taps directly into the SDR signal path "
"eliminating the need to mess with virtual or real audio cables. "
"It can decode AX.25 packets and displays the decoded packets in a text view.</p>"
"<p>The decoder is based on Qtmm, which is avaialble for Linux, Mac and Windows "
"at <a href='http://qtmm.sf.net/'>http://qtmm.sf.net</a>.</p>"
).arg(VERSION));
}
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