source: ntrip/trunk/BNC/bnccaster.cpp@ 367

Last change on this file since 367 was 367, checked in by weber, 17 years ago

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File size: 9.2 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
97// Destructor
98////////////////////////////////////////////////////////////////////////////
99bncCaster::~bncCaster() {
100 QListIterator<bncGetThread*> it(_threads);
101 while(it.hasNext()){
102 bncGetThread* thread = it.next();
103 thread->terminate();
104 thread->wait();
105 delete thread;
106 }
107 delete _out;
108 delete _outFile;
109 delete _server;
110 delete _sockets;
111 delete _epochs;
112}
113
114// New Observations
115////////////////////////////////////////////////////////////////////////////
116void bncCaster::newObs(const QByteArray& staID, const QUrl& mountPoint,
117 bool firstObs, Observation* obs,
118 const QByteArray& format,
119 const QByteArray& latitude,
120 const QByteArray& longitude,
121 const QByteArray& nmea) {
122
123 QMutexLocker locker(&_mutex);
124
125 long iSec = long(floor(obs->GPSWeeks+0.5));
126 long newTime = obs->GPSWeek * 7*24*3600 + iSec;
127
128 // Rename the Station
129 // ------------------
130 strncpy(obs->StatID, staID.constData(),sizeof(obs->StatID));
131 obs->StatID[sizeof(obs->StatID)-1] = '\0';
132
133 // Prepare RINEX Output
134 // --------------------
135 if (_rinexWriters.find(obs->StatID) == _rinexWriters.end()) {
136 _rinexWriters.insert(obs->StatID, new bncRinex(obs->StatID,
137 mountPoint, format, latitude, longitude, nmea));
138 }
139 bncRinex* rnx = _rinexWriters.find(obs->StatID).value();
140 if (_samplingRate == 0 || iSec % _samplingRate == 0) {
141 rnx->deepCopy(obs);
142 }
143 rnx->dumpEpoch(newTime);
144
145 // First time, set the _lastDumpSec immediately
146 // --------------------------------------------
147 if (_lastDumpSec == 0) {
148 _lastDumpSec = newTime - 1;
149 }
150
151 // An old observation - throw it away
152 // ----------------------------------
153 if (newTime <= _lastDumpSec) {
154 if (firstObs) {
155 QSettings settings;
156 if ( !settings.value("outFile").toString().isEmpty() ||
157 !settings.value("outPort").toString().isEmpty() ) {
158 emit( newMessage(QString("Station %1: old epoch %2 thrown away")
159 .arg(staID.data()).arg(iSec).toAscii()) );
160 }
161 }
162 delete obs;
163 return;
164 }
165
166 // Save the observation
167 // --------------------
168 _epochs->insert(newTime, obs);
169
170 // Dump older epochs
171 // -----------------
172 dumpEpochs(_lastDumpSec + 1, newTime - _waitTime);
173
174 if (_lastDumpSec < newTime - _waitTime) {
175 _lastDumpSec = newTime - _waitTime;
176 }
177}
178
179// New Connection
180////////////////////////////////////////////////////////////////////////////
181void bncCaster::slotNewConnection() {
182 _sockets->push_back( _server->nextPendingConnection() );
183}
184
185// Add New Thread
186////////////////////////////////////////////////////////////////////////////
187void bncCaster::addGetThread(bncGetThread* getThread) {
188 connect(getThread, SIGNAL(error(const QByteArray&)),
189 this, SLOT(slotGetThreadError(const QByteArray&)));
190
191 _staIDs.push_back(getThread->staID());
192 _threads.push_back(getThread);
193}
194
195// Error in get thread
196////////////////////////////////////////////////////////////////////////////
197void bncCaster::slotGetThreadError(const QByteArray& staID) {
198 QMutexLocker locker(&_mutex);
199 _staIDs.removeAll(staID);
200 emit( newMessage(
201 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii()) );
202 if (_staIDs.size() == 0) {
203 emit(newMessage("bncCaster:: last get thread terminated"));
204 emit getThreadErrors();
205 }
206}
207
208// Dump Complete Epochs
209////////////////////////////////////////////////////////////////////////////
210void bncCaster::dumpEpochs(long minTime, long maxTime) {
211
212 const char begEpoch = 'A';
213 const char begObs = 'B';
214 const char endEpoch = 'C';
215
216 for (long sec = minTime; sec <= maxTime; sec++) {
217
218 bool first = true;
219 QList<Observation*> allObs = _epochs->values(sec);
220 QListIterator<Observation*> it(allObs);
221 while (it.hasNext()) {
222 Observation* obs = it.next();
223
224 if (_samplingRate == 0 || sec % _samplingRate == 0) {
225
226 // Output into the file
227 // --------------------
228 if (_out) {
229 if (first) {
230 _out->setFieldWidth(1); *_out << begEpoch << endl;;
231 }
232 _out->setFieldWidth(0); *_out << obs->StatID;
233 _out->setFieldWidth(1); *_out << " " << obs->satSys;
234 _out->setPadChar('0');
235 _out->setFieldWidth(2); *_out << obs->satNum;
236 _out->setPadChar(' ');
237 _out->setFieldWidth(1); *_out << " ";
238 _out->setFieldWidth(4); *_out << obs->GPSWeek;
239 _out->setFieldWidth(1); *_out << " ";
240 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->GPSWeeks;
241 _out->setFieldWidth(1); *_out << " ";
242 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C1;
243 _out->setFieldWidth(1); *_out << " ";
244 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->C2;
245 _out->setFieldWidth(1); *_out << " ";
246 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P1;
247 _out->setFieldWidth(1); *_out << " ";
248 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->P2;
249 _out->setFieldWidth(1); *_out << " ";
250 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L1;
251 _out->setFieldWidth(1); *_out << " ";
252 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->L2;
253 _out->setFieldWidth(1); *_out << " ";
254 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S1;
255 _out->setFieldWidth(1); *_out << " ";
256 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->S2;
257 _out->setFieldWidth(1);
258 *_out << " " << obs->SNR1 << " " << obs->SNR2 << endl;
259 if (!it.hasNext()) {
260 _out->setFieldWidth(1); *_out << endEpoch << endl;
261 }
262 _out->flush();
263 }
264
265 // Output into the socket
266 // ----------------------
267 if (_sockets) {
268 int numBytes = sizeof(*obs);
269 QListIterator<QTcpSocket*> is(*_sockets);
270 while (is.hasNext()) {
271 QTcpSocket* sock = is.next();
272 if (first) {
273 sock->write(&begEpoch, 1);
274 }
275 sock->write(&begObs, 1);
276 sock->write((char*) obs, numBytes);
277 if (!it.hasNext()) {
278 sock->write(&endEpoch, 1);
279 }
280 }
281 }
282 }
283
284 delete obs;
285 _epochs->remove(sec);
286 first = false;
287 }
288 }
289}
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