source: ntrip/trunk/BNC/bnccaster.cpp@ 385

Last change on this file since 385 was 385, checked in by mervart, 17 years ago

* empty log message *
File size: 9.9 KB
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1// Part of BNC, a utility for retrieving decoding and
2// converting GNSS data streams from NTRIP broadcasters,
3// written by Leos Mervart.
4//
5// Copyright (C) 2006
6// German Federal Agency for Cartography and Geodesy (BKG)
7// http://www.bkg.bund.de
8// Czech Technical University Prague, Department of Advanced Geodesy
9// http://www.fsv.cvut.cz
10//
11// Email: euref-ip@bkg.bund.de
12//
13// This program is free software; you can redistribute it and/or
14// modify it under the terms of the GNU General Public License
15// as published by the Free Software Foundation, version 2.
16//
17// This program is distributed in the hope that it will be useful,
18// but WITHOUT ANY WARRANTY; without even the implied warranty of
19// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20// GNU General Public License for more details.
21//
22// You should have received a copy of the GNU General Public License
23// along with this program; if not, write to the Free Software
24// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25
26/* -------------------------------------------------------------------------
27 * BKG NTRIP Client
28 * -------------------------------------------------------------------------
29 *
30 * Class: bncCaster
31 *
32 * Purpose: buffers and disseminates the data
33 *
34 * Author: L. Mervart
35 *
36 * Created: 24-Dec-2005
37 *
38 * Changes:
39 *
40 * -----------------------------------------------------------------------*/
41
42#include <math.h>
43
44#include "bnccaster.h"
45#include "bncgetthread.h"
46#include "bncutils.h"
47#include "RTCM/GPSDecoder.h"
48
49// Constructor
50////////////////////////////////////////////////////////////////////////////
51bncCaster::bncCaster(const QString& outFileName, int port) {
52
53 QSettings settings;
54
55 if ( !outFileName.isEmpty() ) {
56 QString lName = outFileName;
57 expandEnvVar(lName);
58 _outFile = new QFile(lName);
59 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
60 _outFile->open(QIODevice::WriteOnly | QIODevice::Append);
61 }
62 else {
63 _outFile->open(QIODevice::WriteOnly);
64 }
65 _out = new QTextStream(_outFile);
66 _out->setRealNumberNotation(QTextStream::FixedNotation);
67 }
68 else {
69 _outFile = 0;
70 _out = 0;
71 }
72
73 _port = port;
74
75 if (_port != 0) {
76 _server = new QTcpServer;
77 _server->listen(QHostAddress::Any, _port);
78 connect(_server, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
79 _sockets = new QList<QTcpSocket*>;
80 }
81 else {
82 _server = 0;
83 _sockets = 0;
84 }
85
86 _epochs = new QMultiMap<long, Observation*>;
87
88 _lastDumpSec = 0;
89
90 _samplingRate = settings.value("rnxSampl").toInt();
91 _waitTime = settings.value("waitTime").toInt();
92 if (_waitTime < 1) {
93 _waitTime = 1;
94 }
95
96 // Start dump epoch loop
97 // ---------------------
98 _newTime = 0;
99 dumpEpochSlot();
100}
101
102// Destructor
103////////////////////////////////////////////////////////////////////////////
104bncCaster::~bncCaster() {
105 QListIterator<bncGetThread*> it(_threads);
106 while(it.hasNext()){
107 bncGetThread* thread = it.next();
108 thread->terminate();
109 thread->wait();
110 delete thread;
111 }
112 delete _out;
113 delete _outFile;
114 delete _server;
115 delete _sockets;
116 delete _epochs;
117}
118
119// Reconnecting
120////////////////////////////////////////////////////////////////////////////
121void bncCaster::reconnecting(const QByteArray& staID) {
122 QMutexLocker locker(&_mutex);
123 if (_rinexWriters.find(staID) != _rinexWriters.end()) {
124 bncRinex* rnx = _rinexWriters.find(staID).value();
125 rnx->setReconnectFlag(true);
126 }
127}
128
129// New Observations
130////////////////////////////////////////////////////////////////////////////
131void bncCaster::newObs(const QByteArray& staID, const QUrl& mountPoint,
132 bool firstObs, Observation* obs,
133 const QByteArray& format,
134 const QByteArray& latitude,
135 const QByteArray& longitude,
136 const QByteArray& nmea) {
137
138 QMutexLocker locker(&_mutex);
139
140 long iSec = long(floor(obs->GPSWeeks+0.5));
141 _newTime = obs->GPSWeek * 7*24*3600 + iSec;
142
143 // Rename the Station
144 // ------------------
145 strncpy(obs->StatID, staID.constData(),sizeof(obs->StatID));
146 obs->StatID[sizeof(obs->StatID)-1] = '\0';
147
148 // Prepare RINEX Output
149 // --------------------
150 if (_rinexWriters.find(obs->StatID) == _rinexWriters.end()) {
151 _rinexWriters.insert(obs->StatID, new bncRinex(obs->StatID,
152 mountPoint, format, latitude, longitude, nmea));
153 }
154 bncRinex* rnx = _rinexWriters.find(obs->StatID).value();
155 if (_samplingRate == 0 || iSec % _samplingRate == 0) {
156 rnx->deepCopy(obs);
157 }
158 rnx->dumpEpoch(_newTime);
159
160 // First time, set the _lastDumpSec immediately
161 // --------------------------------------------
162 if (_lastDumpSec == 0) {
163 _lastDumpSec = _newTime - 1;
164 }
165
166 // An old observation - throw it away
167 // ----------------------------------
168 if (_newTime <= _lastDumpSec) {
169 if (firstObs) {
170 QSettings settings;
171 if ( !settings.value("outFile").toString().isEmpty() ||
172 !settings.value("outPort").toString().isEmpty() ) {
173 emit( newMessage(QString("Station %1: old epoch %2 thrown away")
174 .arg(staID.data()).arg(iSec).toAscii()) );
175 }
176 }
177 delete obs;
178 return;
179 }
180
181 // Save the observation
182 // --------------------
183 _epochs->insert(_newTime, obs);
184}
185
186// Dump Loop Event
187////////////////////////////////////////////////////////////////////////////
188void bncCaster::dumpEpochSlot() {
189 QMutexLocker locker(&_mutex);
190 if (_newTime != 0 && _epochs->size() > 0) {
191 dumpEpochs(_lastDumpSec + 1, _newTime - _waitTime);
192
193 if (_lastDumpSec < _newTime - _waitTime) {
194 _lastDumpSec = _newTime - _waitTime;
195 }
196 }
197 QTimer::singleShot(100, this, SLOT(dumpEpochSlot()));
198}
199
200// New Connection
201////////////////////////////////////////////////////////////////////////////
202void bncCaster::slotNewConnection() {
203 QMutexLocker locker(&_mutex);
204 _sockets->push_back( _server->nextPendingConnection() );
205}
206
207// Add New Thread
208////////////////////////////////////////////////////////////////////////////
209void bncCaster::addGetThread(bncGetThread* getThread) {
210 QMutexLocker locker(&_mutex);
211 connect(getThread, SIGNAL(error(const QByteArray&)),
212 this, SLOT(slotGetThreadError(const QByteArray&)));
213
214 _staIDs.push_back(getThread->staID());
215 _threads.push_back(getThread);
216}
217
218// Error in get thread
219////////////////////////////////////////////////////////////////////////////
220void bncCaster::slotGetThreadError(const QByteArray& staID) {
221 QMutexLocker locker(&_mutex);
222 _staIDs.removeAll(staID);
223 emit( newMessage(
224 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii()) );
225 if (_staIDs.size() == 0) {
226 emit(newMessage("bncCaster:: last get thread terminated"));
227 emit getThreadErrors();
228 }
229}
230
231// Dump Complete Epochs
232////////////////////////////////////////////////////////////////////////////
233void bncCaster::dumpEpochs(long minTime, long maxTime) {
234 QMutexLocker locker(&_mutex);
235
236 const char begEpoch = 'A';
237 const char begObs = 'B';
238 const char endEpoch = 'C';
239
240 for (long sec = minTime; sec <= maxTime; sec++) {
241
242 bool first = true;
243 QList<Observation*> allObs = _epochs->values(sec);
244 QListIterator<Observation*> it(allObs);
245 while (it.hasNext()) {
246 Observation* obs = it.next();
247
248 if (_samplingRate == 0 || sec % _samplingRate == 0) {
249
250 // Output into the file
251 // --------------------
252 if (_out) {
253 if (first) {
254 _out->setFieldWidth(1); *_out << begEpoch << endl;;
255 }
256 _out->setFieldWidth(0); *_out << obs->StatID;
257 _out->setFieldWidth(1); *_out << " " << obs->satSys;
258 _out->setPadChar('0');
259 _out->setFieldWidth(2); *_out << obs->satNum;
260 _out->setPadChar(' ');
261 _out->setFieldWidth(1); *_out << " ";
262 _out->setFieldWidth(4); *_out << obs->GPSWeek;
263 _out->setFieldWidth(1); *_out << " ";
264 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->GPSWeeks;
265 _out->setFieldWidth(1); *_out << " ";
266 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C1;
267 _out->setFieldWidth(1); *_out << " ";
268 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C2;
269 _out->setFieldWidth(1); *_out << " ";
270 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P1;
271 _out->setFieldWidth(1); *_out << " ";
272 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P2;
273 _out->setFieldWidth(1); *_out << " ";
274 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L1;
275 _out->setFieldWidth(1); *_out << " ";
276 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L2;
277 _out->setFieldWidth(1); *_out << " ";
278 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S1;
279 _out->setFieldWidth(1); *_out << " ";
280 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S2;
281 _out->setFieldWidth(1);
282 *_out << " " << obs->SNR1 << " " << obs->SNR2 << endl;
283 if (!it.hasNext()) {
284 _out->setFieldWidth(1); *_out << endEpoch << endl;
285 }
286 _out->flush();
287 }
288
289 // Output into the socket
290 // ----------------------
291 if (_sockets) {
292 int numBytes = sizeof(*obs);
293 QListIterator<QTcpSocket*> is(*_sockets);
294 while (is.hasNext()) {
295 QTcpSocket* sock = is.next();
296 if (first) {
297 sock->write(&begEpoch, 1);
298 }
299 sock->write(&begObs, 1);
300 sock->write((char*) obs, numBytes);
301 if (!it.hasNext()) {
302 sock->write(&endEpoch, 1);
303 }
304 }
305 }
306 }
307
308 delete obs;
309 _epochs->remove(sec);
310 first = false;
311 }
312 }
313}
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