source: ntrip/trunk/BNC/bnccaster.cpp@ 387

Last change on this file since 387 was 387, checked in by mervart, 17 years ago

* empty log message *
File size: 9.8 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
124 if (_rinexWriters.find(staID) != _rinexWriters.end()) {
125 bncRinex* rnx = _rinexWriters.find(staID).value();
126 rnx->setReconnectFlag(true);
127 }
128}
129
130// New Observations
131////////////////////////////////////////////////////////////////////////////
132void bncCaster::newObs(const QByteArray& staID, const QUrl& mountPoint,
133 bool firstObs, Observation* obs,
134 const QByteArray& format,
135 const QByteArray& latitude,
136 const QByteArray& longitude,
137 const QByteArray& nmea) {
138
139 QMutexLocker locker(&_mutex);
140
141 long iSec = long(floor(obs->GPSWeeks+0.5));
142 _newTime = obs->GPSWeek * 7*24*3600 + iSec;
143
144 // Rename the Station
145 // ------------------
146 strncpy(obs->StatID, staID.constData(),sizeof(obs->StatID));
147 obs->StatID[sizeof(obs->StatID)-1] = '\0';
148
149 // Prepare RINEX Output
150 // --------------------
151 if (_rinexWriters.find(obs->StatID) == _rinexWriters.end()) {
152 _rinexWriters.insert(obs->StatID, new bncRinex(obs->StatID,
153 mountPoint, format, latitude, longitude, nmea));
154 }
155 bncRinex* rnx = _rinexWriters.find(obs->StatID).value();
156 if (_samplingRate == 0 || iSec % _samplingRate == 0) {
157 rnx->deepCopy(obs);
158 }
159 rnx->dumpEpoch(_newTime);
160
161 // First time, set the _lastDumpSec immediately
162 // --------------------------------------------
163 if (_lastDumpSec == 0) {
164 _lastDumpSec = _newTime - 1;
165 }
166
167 // An old observation - throw it away
168 // ----------------------------------
169 if (_newTime <= _lastDumpSec) {
170 if (firstObs) {
171 QSettings settings;
172 if ( !settings.value("outFile").toString().isEmpty() ||
173 !settings.value("outPort").toString().isEmpty() ) {
174 emit( newMessage(QString("Station %1: old epoch %2 thrown away")
175 .arg(staID.data()).arg(iSec).toAscii()) );
176 }
177 }
178 delete obs;
179 return;
180 }
181
182 // Save the observation
183 // --------------------
184 _epochs->insert(_newTime, obs);
185}
186
187// Dump Loop Event
188////////////////////////////////////////////////////////////////////////////
189void bncCaster::dumpEpochSlot() {
190 QMutexLocker locker(&_mutex);
191 if (_newTime != 0 && _epochs->size() > 0) {
192 dumpEpochs(_lastDumpSec + 1, _newTime - _waitTime);
193
194 if (_lastDumpSec < _newTime - _waitTime) {
195 _lastDumpSec = _newTime - _waitTime;
196 }
197 }
198 QTimer::singleShot(100, this, SLOT(dumpEpochSlot()));
199}
200
201// New Connection
202////////////////////////////////////////////////////////////////////////////
203void bncCaster::slotNewConnection() {
204 _sockets->push_back( _server->nextPendingConnection() );
205}
206
207// Add New Thread
208////////////////////////////////////////////////////////////////////////////
209void bncCaster::addGetThread(bncGetThread* getThread) {
210 connect(getThread, SIGNAL(error(const QByteArray&)),
211 this, SLOT(slotGetThreadError(const QByteArray&)));
212
213 _staIDs.push_back(getThread->staID());
214 _threads.push_back(getThread);
215}
216
217// Error in get thread
218////////////////////////////////////////////////////////////////////////////
219void bncCaster::slotGetThreadError(const QByteArray& staID) {
220 QMutexLocker locker(&_mutex);
221 _staIDs.removeAll(staID);
222 emit( newMessage(
223 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii()) );
224 if (_staIDs.size() == 0) {
225 emit(newMessage("bncCaster:: last get thread terminated"));
226 emit getThreadErrors();
227 }
228}
229
230// Dump Complete Epochs
231////////////////////////////////////////////////////////////////////////////
232void bncCaster::dumpEpochs(long minTime, long maxTime) {
233
234 const char begEpoch = 'A';
235 const char begObs = 'B';
236 const char endEpoch = 'C';
237
238 for (long sec = minTime; sec <= maxTime; sec++) {
239
240 bool first = true;
241 QList<Observation*> allObs = _epochs->values(sec);
242 QListIterator<Observation*> it(allObs);
243 while (it.hasNext()) {
244 Observation* obs = it.next();
245
246 if (_samplingRate == 0 || sec % _samplingRate == 0) {
247
248 // Output into the file
249 // --------------------
250 if (_out) {
251 if (first) {
252 _out->setFieldWidth(1); *_out << begEpoch << endl;;
253 }
254 _out->setFieldWidth(0); *_out << obs->StatID;
255 _out->setFieldWidth(1); *_out << " " << obs->satSys;
256 _out->setPadChar('0');
257 _out->setFieldWidth(2); *_out << obs->satNum;
258 _out->setPadChar(' ');
259 _out->setFieldWidth(1); *_out << " ";
260 _out->setFieldWidth(4); *_out << obs->GPSWeek;
261 _out->setFieldWidth(1); *_out << " ";
262 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->GPSWeeks;
263 _out->setFieldWidth(1); *_out << " ";
264 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C1;
265 _out->setFieldWidth(1); *_out << " ";
266 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C2;
267 _out->setFieldWidth(1); *_out << " ";
268 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P1;
269 _out->setFieldWidth(1); *_out << " ";
270 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P2;
271 _out->setFieldWidth(1); *_out << " ";
272 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L1;
273 _out->setFieldWidth(1); *_out << " ";
274 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L2;
275 _out->setFieldWidth(1); *_out << " ";
276 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S1;
277 _out->setFieldWidth(1); *_out << " ";
278 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S2;
279 _out->setFieldWidth(1);
280 *_out << " " << obs->SNR1 << " " << obs->SNR2 << endl;
281 if (!it.hasNext()) {
282 _out->setFieldWidth(1); *_out << endEpoch << endl;
283 }
284 _out->flush();
285 }
286
287 // Output into the socket
288 // ----------------------
289 if (_sockets) {
290 int numBytes = sizeof(*obs);
291 QListIterator<QTcpSocket*> is(*_sockets);
292 while (is.hasNext()) {
293 QTcpSocket* sock = is.next();
294 if (first) {
295 sock->write(&begEpoch, 1);
296 }
297 sock->write(&begObs, 1);
298 sock->write((char*) obs, numBytes);
299 if (!it.hasNext()) {
300 sock->write(&endEpoch, 1);
301 }
302 }
303 }
304 }
305
306 delete obs;
307 _epochs->remove(sec);
308 first = false;
309 }
310 }
311}
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