source: ntrip/trunk/BNC/bnccaster.cpp@ 940

Last change on this file since 940 was 740, checked in by mervart, 17 years ago

* empty log message *
File size: 9.6 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 <iostream>
42#include <math.h>
43#include <unistd.h>
44
45#include "bnccaster.h"
46#include "bncgetthread.h"
47#include "bncutils.h"
48#include "RTCM/GPSDecoder.h"
49
50
51// Constructor
52////////////////////////////////////////////////////////////////////////////
53bncCaster::bncCaster(const QString& outFileName, int port) {
54
55 QSettings settings;
56
57 if ( !outFileName.isEmpty() ) {
58 QString lName = outFileName;
59 expandEnvVar(lName);
60 _outFile = new QFile(lName);
61 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
62 _outFile->open(QIODevice::WriteOnly | QIODevice::Append);
63 }
64 else {
65 _outFile->open(QIODevice::WriteOnly);
66 }
67 _out = new QTextStream(_outFile);
68 _out->setRealNumberNotation(QTextStream::FixedNotation);
69 }
70 else {
71 _outFile = 0;
72 _out = 0;
73 }
74
75 _port = port;
76
77 if (_port != 0) {
78 _server = new QTcpServer;
79 _server->listen(QHostAddress::Any, _port);
80 connect(_server, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
81 _sockets = new QList<QTcpSocket*>;
82 }
83 else {
84 _server = 0;
85 _sockets = 0;
86 }
87
88 _epochs = new QMultiMap<long, p_obs>;
89
90 _lastDumpSec = 0;
91
92 _samplingRate = settings.value("binSampl").toInt();
93 _waitTime = settings.value("waitTime").toInt();
94 if (_waitTime < 1) {
95 _waitTime = 1;
96 }
97}
98
99// Destructor
100////////////////////////////////////////////////////////////////////////////
101bncCaster::~bncCaster() {
102 QListIterator<bncGetThread*> it(_threads);
103 while(it.hasNext()){
104 bncGetThread* thread = it.next();
105 thread->terminate();
106 thread->wait();
107 delete thread;
108 }
109 delete _out;
110 delete _outFile;
111 delete _server;
112 delete _sockets;
113 if (_epochs) {
114 QListIterator<p_obs> it(_epochs->values());
115 while (it.hasNext()) {
116 delete it.next();
117 }
118 delete _epochs;
119 }
120}
121
122// New Observations
123////////////////////////////////////////////////////////////////////////////
124void bncCaster::newObs(const QByteArray staID, bool firstObs, p_obs obs) {
125
126 QMutexLocker locker(&_mutex);
127
128 obs->_status = t_obs::received;
129
130 long iSec = long(floor(obs->_o.GPSWeeks+0.5));
131 long newTime = obs->_o.GPSWeek * 7*24*3600 + iSec;
132
133 // Rename the Station
134 // ------------------
135 strncpy(obs->_o.StatID, staID.constData(),sizeof(obs->_o.StatID));
136 obs->_o.StatID[sizeof(obs->_o.StatID)-1] = '\0';
137
138 // First time, set the _lastDumpSec immediately
139 // --------------------------------------------
140 if (_lastDumpSec == 0) {
141 _lastDumpSec = newTime - 1;
142 }
143
144 // An old observation - throw it away
145 // ----------------------------------
146 if (newTime <= _lastDumpSec) {
147 if (firstObs) {
148 QSettings settings;
149 if ( !settings.value("outFile").toString().isEmpty() ||
150 !settings.value("outPort").toString().isEmpty() ) {
151 emit( newMessage(QString("Station %1: old epoch %2 thrown away")
152 .arg(staID.data()).arg(iSec).toAscii()) );
153 }
154 }
155 delete obs;
156 return;
157 }
158
159 // Save the observation
160 // --------------------
161 _epochs->insert(newTime, obs);
162
163 // Dump Epochs
164 // -----------
165 if (newTime - _waitTime > _lastDumpSec) {
166 dumpEpochs(_lastDumpSec + 1, newTime - _waitTime);
167 _lastDumpSec = newTime - _waitTime;
168 }
169}
170
171// New Connection
172////////////////////////////////////////////////////////////////////////////
173void bncCaster::slotNewConnection() {
174 _sockets->push_back( _server->nextPendingConnection() );
175 emit( newMessage(QString("New Connection # %1")
176 .arg(_sockets->size()).toAscii()) );
177}
178
179// Add New Thread
180////////////////////////////////////////////////////////////////////////////
181void bncCaster::addGetThread(bncGetThread* getThread) {
182
183 qRegisterMetaType<p_obs>("p_obs");
184
185 connect(getThread, SIGNAL(newObs(QByteArray, bool, p_obs)),
186 this, SLOT(newObs(QByteArray, bool, p_obs)));
187
188 connect(getThread, SIGNAL(error(QByteArray)),
189 this, SLOT(slotGetThreadError(QByteArray)));
190
191 _staIDs.push_back(getThread->staID());
192 _threads.push_back(getThread);
193}
194
195// Error in get thread
196////////////////////////////////////////////////////////////////////////////
197void bncCaster::slotGetThreadError(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<p_obs> allObs = _epochs->values(sec);
220 QListIterator<p_obs> it(allObs);
221 while (it.hasNext()) {
222 p_obs 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->_o.StatID;
233 _out->setFieldWidth(1); *_out << " " << obs->_o.satSys;
234 _out->setPadChar('0');
235 _out->setFieldWidth(2); *_out << obs->_o.satNum;
236 _out->setPadChar(' ');
237 _out->setFieldWidth(1); *_out << " ";
238 _out->setFieldWidth(4); *_out << obs->_o.GPSWeek;
239 _out->setFieldWidth(1); *_out << " ";
240 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->_o.GPSWeeks;
241 _out->setFieldWidth(1); *_out << " ";
242 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C1;
243 _out->setFieldWidth(1); *_out << " ";
244 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C2;
245 _out->setFieldWidth(1); *_out << " ";
246 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P1;
247 _out->setFieldWidth(1); *_out << " ";
248 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P2;
249 _out->setFieldWidth(1); *_out << " ";
250 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L1;
251 _out->setFieldWidth(1); *_out << " ";
252 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L2;
253 _out->setFieldWidth(1); *_out << " ";
254 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S1;
255 _out->setFieldWidth(1); *_out << " ";
256 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S2;
257 _out->setFieldWidth(1);
258 *_out << " " << obs->_o.SNR1 << " " << obs->_o.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->_o);
269 QMutableListIterator<QTcpSocket*> is(*_sockets);
270 while (is.hasNext()) {
271 QTcpSocket* sock = is.next();
272 if (sock->state() == QAbstractSocket::ConnectedState) {
273 bool ok = true;
274 int fd = sock->socketDescriptor();
275 if (first) {
276 if (::write(fd, &begEpoch, 1) != 1) {
277 ok = false;
278 }
279 }
280 if (::write(fd, &begObs, 1) != 1) {
281 ok = false;
282 }
283 if (::write(fd, &obs->_o, numBytes) != numBytes) {
284 ok = false;
285 }
286 if (!it.hasNext()) {
287 if (::write(fd, &endEpoch, 1) != 1) {
288 ok = false;
289 }
290 }
291 if (!ok) {
292 delete sock;
293 is.remove();
294 }
295 }
296 else if (sock->state() != QAbstractSocket::ConnectingState) {
297 delete sock;
298 is.remove();
299 }
300 }
301 }
302 }
303
304 delete obs;
305 _epochs->remove(sec);
306 first = false;
307 }
308 }
309}
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