source: ntrip/trunk/BNC/bnccaster.cpp@ 628

Last change on this file since 628 was 628, checked in by mervart, 17 years ago

* empty log message *
File size: 8.9 KB
Line 
1// Part of BNC, a utility for retrieving decoding and
2// converting GNSS data streams from NTRIP broadcasters.
3//
4// Copyright (C) 2007
5// German Federal Agency for Cartography and Geodesy (BKG)
6// http://www.bkg.bund.de
7// Czech Technical University Prague, Department of Geodesy
8// http://www.fsv.cvut.cz
9//
10// Email: euref-ip@bkg.bund.de
11//
12// This program is free software; you can redistribute it and/or
13// modify it under the terms of the GNU General Public License
14// as published by the Free Software Foundation, version 2.
15//
16// This program is distributed in the hope that it will be useful,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19// GNU General Public License for more details.
20//
21// You should have received a copy of the GNU General Public License
22// along with this program; if not, write to the Free Software
23// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24
25/* -------------------------------------------------------------------------
26 * BKG NTRIP Client
27 * -------------------------------------------------------------------------
28 *
29 * Class: bncCaster
30 *
31 * Purpose: buffers and disseminates the data
32 *
33 * Author: L. Mervart
34 *
35 * Created: 24-Dec-2005
36 *
37 * Changes:
38 *
39 * -----------------------------------------------------------------------*/
40
41#include <math.h>
42
43#include "bnccaster.h"
44#include "bncgetthread.h"
45#include "bncutils.h"
46#include "RTCM/GPSDecoder.h"
47
48// Constructor
49////////////////////////////////////////////////////////////////////////////
50bncCaster::bncCaster(const QString& outFileName, int port) {
51
52 QSettings settings;
53
54 if ( !outFileName.isEmpty() ) {
55 QString lName = outFileName;
56 expandEnvVar(lName);
57 _outFile = new QFile(lName);
58 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
59 _outFile->open(QIODevice::WriteOnly | QIODevice::Append);
60 }
61 else {
62 _outFile->open(QIODevice::WriteOnly);
63 }
64 _out = new QTextStream(_outFile);
65 _out->setRealNumberNotation(QTextStream::FixedNotation);
66 }
67 else {
68 _outFile = 0;
69 _out = 0;
70 }
71
72 _port = port;
73
74 if (_port != 0) {
75 _server = new QTcpServer;
76 _server->listen(QHostAddress::Any, _port);
77 connect(_server, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
78 _sockets = new QList<QTcpSocket*>;
79 }
80 else {
81 _server = 0;
82 _sockets = 0;
83 }
84
85 _epochs = new QMultiMap<long, p_obs>;
86
87 _lastDumpSec = 0;
88
89 _samplingRate = settings.value("rnxSampl").toInt();
90 _waitTime = settings.value("waitTime").toInt();
91 if (_waitTime < 1) {
92 _waitTime = 1;
93 }
94}
95
96// Destructor
97////////////////////////////////////////////////////////////////////////////
98bncCaster::~bncCaster() {
99 QListIterator<bncGetThread*> it(_threads);
100 while(it.hasNext()){
101 bncGetThread* thread = it.next();
102 thread->terminate();
103 thread->wait();
104 delete thread;
105 }
106 delete _out;
107 delete _outFile;
108 delete _server;
109 delete _sockets;
110 if (_epochs) {
111 QListIterator<p_obs> it(_epochs->values());
112 while (it.hasNext()) {
113 delete it.next();
114 }
115 delete _epochs;
116 }
117}
118
119// New Observations
120////////////////////////////////////////////////////////////////////////////
121void bncCaster::newObs(const QByteArray staID, bool firstObs, p_obs obs) {
122
123 QMutexLocker locker(&_mutex);
124
125 obs->_status = t_obs::received;
126
127 long iSec = long(floor(obs->_o.GPSWeeks+0.5));
128 long newTime = obs->_o.GPSWeek * 7*24*3600 + iSec;
129
130 // Rename the Station
131 // ------------------
132 strncpy(obs->_o.StatID, staID.constData(),sizeof(obs->_o.StatID));
133 obs->_o.StatID[sizeof(obs->_o.StatID)-1] = '\0';
134
135 // First time, set the _lastDumpSec immediately
136 // --------------------------------------------
137 if (_lastDumpSec == 0) {
138 _lastDumpSec = newTime - 1;
139 }
140
141 // An old observation - throw it away
142 // ----------------------------------
143 if (newTime <= _lastDumpSec) {
144 if (firstObs) {
145 QSettings settings;
146 if ( !settings.value("outFile").toString().isEmpty() ||
147 !settings.value("outPort").toString().isEmpty() ) {
148 emit( newMessage(QString("Station %1: old epoch %2 thrown away")
149 .arg(staID.data()).arg(iSec).toAscii()) );
150 }
151 }
152 delete obs;
153 return;
154 }
155
156 // Save the observation
157 // --------------------
158 _epochs->insert(newTime, obs);
159
160 // Dump Epochs
161 // -----------
162 if (newTime - _waitTime > _lastDumpSec) {
163 dumpEpochs(_lastDumpSec + 1, newTime - _waitTime);
164 _lastDumpSec = newTime - _waitTime;
165 }
166}
167
168// New Connection
169////////////////////////////////////////////////////////////////////////////
170void bncCaster::slotNewConnection() {
171 _sockets->push_back( _server->nextPendingConnection() );
172}
173
174// Add New Thread
175////////////////////////////////////////////////////////////////////////////
176void bncCaster::addGetThread(bncGetThread* getThread) {
177
178 qRegisterMetaType<p_obs>("p_obs");
179
180 connect(getThread, SIGNAL(newObs(QByteArray, bool, p_obs)),
181 this, SLOT(newObs(QByteArray, bool, p_obs)));
182
183 connect(getThread, SIGNAL(error(QByteArray)),
184 this, SLOT(slotGetThreadError(QByteArray)));
185
186 _staIDs.push_back(getThread->staID());
187 _threads.push_back(getThread);
188}
189
190// Error in get thread
191////////////////////////////////////////////////////////////////////////////
192void bncCaster::slotGetThreadError(QByteArray staID) {
193 QMutexLocker locker(&_mutex);
194 _staIDs.removeAll(staID);
195 emit( newMessage(
196 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii()) );
197 if (_staIDs.size() == 0) {
198 emit(newMessage("bncCaster:: last get thread terminated"));
199 emit getThreadErrors();
200 }
201}
202
203// Dump Complete Epochs
204////////////////////////////////////////////////////////////////////////////
205void bncCaster::dumpEpochs(long minTime, long maxTime) {
206
207 const char begEpoch = 'A';
208 const char begObs = 'B';
209 const char endEpoch = 'C';
210
211 for (long sec = minTime; sec <= maxTime; sec++) {
212
213 bool first = true;
214 QList<p_obs> allObs = _epochs->values(sec);
215 QListIterator<p_obs> it(allObs);
216 while (it.hasNext()) {
217 p_obs obs = it.next();
218
219 if (_samplingRate == 0 || sec % _samplingRate == 0) {
220
221 // Output into the file
222 // --------------------
223 if (_out) {
224 if (first) {
225 _out->setFieldWidth(1); *_out << begEpoch << endl;;
226 }
227 _out->setFieldWidth(0); *_out << obs->_o.StatID;
228 _out->setFieldWidth(1); *_out << " " << obs->_o.satSys;
229 _out->setPadChar('0');
230 _out->setFieldWidth(2); *_out << obs->_o.satNum;
231 _out->setPadChar(' ');
232 _out->setFieldWidth(1); *_out << " ";
233 _out->setFieldWidth(4); *_out << obs->_o.GPSWeek;
234 _out->setFieldWidth(1); *_out << " ";
235 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->_o.GPSWeeks;
236 _out->setFieldWidth(1); *_out << " ";
237 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C1;
238 _out->setFieldWidth(1); *_out << " ";
239 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C2;
240 _out->setFieldWidth(1); *_out << " ";
241 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P1;
242 _out->setFieldWidth(1); *_out << " ";
243 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P2;
244 _out->setFieldWidth(1); *_out << " ";
245 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L1;
246 _out->setFieldWidth(1); *_out << " ";
247 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L2;
248 _out->setFieldWidth(1); *_out << " ";
249 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S1;
250 _out->setFieldWidth(1); *_out << " ";
251 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S2;
252 _out->setFieldWidth(1);
253 *_out << " " << obs->_o.SNR1 << " " << obs->_o.SNR2 << endl;
254 if (!it.hasNext()) {
255 _out->setFieldWidth(1); *_out << endEpoch << endl;
256 }
257 _out->flush();
258 }
259
260 // Output into the socket
261 // ----------------------
262 if (_sockets) {
263 int numBytes = sizeof(obs->_o);
264 QListIterator<QTcpSocket*> is(*_sockets);
265 while (is.hasNext()) {
266 QTcpSocket* sock = is.next();
267 if (sock->state() == QAbstractSocket::ConnectedState) {
268 if (first) {
269 sock->write(&begEpoch, 1);
270 }
271 sock->write(&begObs, 1);
272 sock->write((char*) &obs->_o, numBytes);
273 if (!it.hasNext()) {
274 sock->write(&endEpoch, 1);
275 }
276 }
277 }
278 }
279 }
280
281 delete obs;
282 _epochs->remove(sec);
283 first = false;
284 }
285 }
286}
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