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https://github.com/g4klx/ircDDBGateway.git
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Initial commit.
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Jonathan Naylor
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394
Common/APRSWriter.cpp
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394
Common/APRSWriter.cpp
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/*
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* Copyright (C) 2010-2014 by Jonathan Naylor G4KLX
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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; either version 2 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 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, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "APRSWriter.h"
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#include "DStarDefines.h"
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#include "Defs.h"
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CAPRSEntry::CAPRSEntry(const wxString& callsign, const wxString& band, double frequency, double offset, double range, double latitude, double longitude, double agl) :
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m_callsign(callsign),
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m_band(band),
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m_frequency(frequency),
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m_offset(offset),
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m_range(range),
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m_latitude(latitude),
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m_longitude(longitude),
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m_agl(agl),
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m_timer(1000U, 10U),
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m_first(true),
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m_collector(NULL)
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{
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m_callsign.Trim();
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m_collector = new CAPRSCollector;
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}
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CAPRSEntry::~CAPRSEntry()
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{
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delete m_collector;
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}
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wxString CAPRSEntry::getCallsign() const
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{
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return m_callsign;
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}
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wxString CAPRSEntry::getBand() const
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{
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return m_band;
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}
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double CAPRSEntry::getFrequency() const
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{
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return m_frequency;
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}
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double CAPRSEntry::getOffset() const
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{
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return m_offset;
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}
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double CAPRSEntry::getRange() const
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{
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return m_range;
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}
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double CAPRSEntry::getLatitude() const
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{
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return m_latitude;
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}
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double CAPRSEntry::getLongitude() const
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{
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return m_longitude;
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}
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double CAPRSEntry::getAGL() const
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{
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return m_agl;
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}
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CAPRSCollector* CAPRSEntry::getCollector() const
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{
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return m_collector;
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}
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void CAPRSEntry::reset()
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{
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m_first = true;
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m_timer.stop();
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m_collector->reset();
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}
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void CAPRSEntry::clock(unsigned int ms)
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{
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m_timer.clock(ms);
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}
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bool CAPRSEntry::isOK()
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{
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if (m_first) {
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m_first = false;
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m_timer.start();
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return true;
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}
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if (m_timer.hasExpired()) {
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m_timer.start();
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return true;
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} else {
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m_timer.start();
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return false;
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}
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}
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CAPRSWriter::CAPRSWriter(const wxString& hostname, unsigned int port, const wxString& gateway, const wxString& address) :
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m_thread(NULL),
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m_enabled(false),
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m_idTimer(1000U, 20U * 60U), // 20 minutes
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m_gateway(),
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m_array()
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{
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wxASSERT(!hostname.IsEmpty());
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wxASSERT(port > 0U);
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wxASSERT(!gateway.IsEmpty());
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m_thread = new CAPRSWriterThread(gateway, address, hostname, port);
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m_gateway = gateway;
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m_gateway.Truncate(LONG_CALLSIGN_LENGTH - 1U);
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m_gateway.Trim();
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}
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CAPRSWriter::~CAPRSWriter()
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{
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for (CEntry_t::iterator it = m_array.begin(); it != m_array.end(); ++it)
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delete it->second;
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m_array.clear();
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}
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void CAPRSWriter::setPort(const wxString& callsign, const wxString& band, double frequency, double offset, double range, double latitude, double longitude, double agl)
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{
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wxString temp = callsign;
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temp.resize(LONG_CALLSIGN_LENGTH - 1U, wxT(' '));
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temp.Append(band);
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m_array[temp] = new CAPRSEntry(callsign, band, frequency, offset, range, latitude, longitude, agl);
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}
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bool CAPRSWriter::open()
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{
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return m_thread->start();
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}
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void CAPRSWriter::writeData(const wxString& callsign, const CAMBEData& data)
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{
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if (data.isEnd())
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return;
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CAPRSEntry* entry = m_array[callsign];
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if (entry == NULL) {
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wxLogError(wxT("Cannot find the callsign \"%s\" in the APRS array"), callsign.c_str());
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return;
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}
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CAPRSCollector* collector = entry->getCollector();
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if (data.isSync()) {
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collector->sync();
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return;
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}
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unsigned char buffer[400U];
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data.getData(buffer, DV_FRAME_MAX_LENGTH_BYTES);
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bool complete = collector->writeData(buffer + VOICE_FRAME_LENGTH_BYTES);
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if (!complete)
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return;
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if (!m_enabled) {
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collector->reset();
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return;
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}
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if (!m_thread->isConnected()) {
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collector->reset();
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return;
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}
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// Check the transmission timer
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bool ok = entry->isOK();
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if (!ok) {
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collector->reset();
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return;
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}
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unsigned int length = collector->getData(buffer, 400U);
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wxString text((char*)buffer, wxConvLocal, length);
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int n = text.Find(wxT(':'));
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if (n == wxNOT_FOUND) {
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collector->reset();
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return;
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}
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wxString header = text.Left(n);
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wxString body = text.Mid(n + 1U);
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// If we already have a q-construct, don't send it on
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n = header.Find(wxT('q'));
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if (n != wxNOT_FOUND)
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return;
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// Remove the trailing \r
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n = body.Find(wxT('\r'));
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if (n != wxNOT_FOUND)
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body = body.Left(n);
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wxString output;
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output.Printf(wxT("%s,qAR,%s-%s:%s"), header.c_str(), entry->getCallsign().c_str(), entry->getBand().c_str(), body.c_str());
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char ascii[500U];
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::memset(ascii, 0x00, 500U);
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for (unsigned int i = 0U; i < output.Len(); i++)
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ascii[i] = output.GetChar(i);
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m_thread->write(ascii);
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collector->reset();
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}
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void CAPRSWriter::reset(const wxString& callsign)
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{
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CAPRSEntry* entry = m_array[callsign];
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if (entry == NULL) {
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wxLogError(wxT("Cannot find the callsign \"%s\" in the APRS array"), callsign.c_str());
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return;
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}
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entry->reset();
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}
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void CAPRSWriter::setEnabled(bool enabled)
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{
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m_enabled = enabled;
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if (m_enabled) {
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sendIdFrames();
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m_idTimer.start();
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}
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}
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void CAPRSWriter::clock(unsigned int ms)
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{
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m_idTimer.clock(ms);
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if (m_idTimer.hasExpired()) {
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sendIdFrames();
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m_idTimer.start();
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}
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for (CEntry_t::iterator it = m_array.begin(); it != m_array.end(); ++it)
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it->second->clock(ms);
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}
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bool CAPRSWriter::isConnected() const
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{
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return m_thread->isConnected();
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}
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void CAPRSWriter::close()
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{
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m_thread->stop();
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}
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void CAPRSWriter::sendIdFrames()
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{
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if (!m_thread->isConnected())
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return;
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time_t now;
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::time(&now);
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struct tm* tm = ::gmtime(&now);
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for (CEntry_t::iterator it = m_array.begin(); it != m_array.end(); ++it) {
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CAPRSEntry* entry = it->second;
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if (entry == NULL)
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continue;
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// Default values aren't passed on
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if (entry->getLatitude() == 0.0 && entry->getLongitude() == 0.0)
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continue;
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wxString desc;
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if (entry->getBand().Len() > 1U) {
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if (entry->getFrequency() != 0.0)
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desc.Printf(wxT("Data %.5lfMHz"), entry->getFrequency());
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else
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desc = wxT("Data");
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} else {
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if (entry->getFrequency() != 0.0)
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desc.Printf(wxT("Voice %.5lfMHz %c%.4lfMHz"),
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entry->getFrequency(),
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entry->getOffset() < 0.0 ? wxT('-') : wxT('+'),
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::fabs(entry->getOffset()));
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else
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desc = wxT("Voice");
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}
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wxString band;
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if (entry->getFrequency() >= 1200.0)
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band = wxT("1.2");
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else if (entry->getFrequency() >= 420.0)
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band = wxT("440");
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else if (entry->getFrequency() >= 144.0)
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band = wxT("2m");
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else if (entry->getFrequency() >= 50.0)
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band = wxT("6m");
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else if (entry->getFrequency() >= 28.0)
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band = wxT("10m");
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double tempLat = ::fabs(entry->getLatitude());
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double tempLong = ::fabs(entry->getLongitude());
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double latitude = ::floor(tempLat);
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double longitude = ::floor(tempLong);
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latitude = (tempLat - latitude) * 60.0 + latitude * 100.0;
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longitude = (tempLong - longitude) * 60.0 + longitude * 100.0;
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wxString lat;
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if (latitude >= 1000.0F)
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lat.Printf(wxT("%.2lf"), latitude);
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else if (latitude >= 100.0F)
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lat.Printf(wxT("0%.2lf"), latitude);
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else if (latitude >= 10.0F)
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lat.Printf(wxT("00%.2lf"), latitude);
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else
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lat.Printf(wxT("000%.2lf"), latitude);
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wxString lon;
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if (longitude >= 10000.0F)
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lon.Printf(wxT("%.2lf"), longitude);
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else if (longitude >= 1000.0F)
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lon.Printf(wxT("0%.2lf"), longitude);
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else if (longitude >= 100.0F)
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lon.Printf(wxT("00%.2lf"), longitude);
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else if (longitude >= 10.0F)
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lon.Printf(wxT("000%.2lf"), longitude);
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else
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lon.Printf(wxT("0000%.2lf"), longitude);
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// Convert commas to periods in the latitude and longitude
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lat.Replace(wxT(","), wxT("."));
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lon.Replace(wxT(","), wxT("."));
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wxString output;
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output.Printf(wxT("%s-S>APDG01,TCPIP*,qAC,%s-GS:;%-7s%-2s*%02d%02d%02dz%s%cD%s%caRNG%04.0lf %s %s"),
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m_gateway.c_str(), m_gateway.c_str(), entry->getCallsign().c_str(), entry->getBand().c_str(),
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tm->tm_mday, tm->tm_hour, tm->tm_min,
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lat.c_str(), (entry->getLatitude() < 0.0F) ? wxT('S') : wxT('N'),
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lon.c_str(), (entry->getLongitude() < 0.0F) ? wxT('W') : wxT('E'),
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entry->getRange() * 0.6214, band.c_str(), desc.c_str());
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char ascii[300U];
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::memset(ascii, 0x00, 300U);
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for (unsigned int i = 0U; i < output.Len(); i++)
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ascii[i] = output.GetChar(i);
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m_thread->write(ascii);
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if (entry->getBand().Len() == 1U) {
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output.Printf(wxT("%s-%s>APDG02,TCPIP*,qAC,%s-%sS:!%s%cD%s%c&RNG%04.0lf %s %s"),
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entry->getCallsign().c_str(), entry->getBand().c_str(), entry->getCallsign().c_str(), entry->getBand().c_str(),
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lat.c_str(), (entry->getLatitude() < 0.0F) ? wxT('S') : wxT('N'),
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lon.c_str(), (entry->getLongitude() < 0.0F) ? wxT('W') : wxT('E'),
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entry->getRange() * 0.6214, band.c_str(), desc.c_str());
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::memset(ascii, 0x00, 300U);
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for (unsigned int i = 0U; i < output.Len(); i++)
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ascii[i] = output.GetChar(i);
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m_thread->write(ascii);
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}
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}
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m_idTimer.start();
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}
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