source: ntrip/trunk/BNC/bnccaster.cpp@ 1891

Last change on this file since 1891 was 1821, checked in by weber, 16 years ago

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File size: 15.2 KB
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1// Part of BNC, a utility for retrieving decoding and
2// converting GNSS data streams from NTRIP broadcasters.
3//
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#include <unistd.h>
43
44#include "bnccaster.h"
45#include "bncapp.h"
46#include "bncgetthread.h"
47#include "bncutils.h"
48#include "bncsettings.h"
49#include "RTCM/GPSDecoder.h"
50
51// Constructor
52////////////////////////////////////////////////////////////////////////////
53bncCaster::bncCaster(const QString& outFileName, int port) {
54
55 bncSettings settings;
56
57 connect(this, SIGNAL(newMessage(QByteArray,bool)),
58 (bncApp*) qApp, SLOT(slotMessage(const QByteArray,bool)));
59
60 if ( !outFileName.isEmpty() ) {
61 QString lName = outFileName;
62 expandEnvVar(lName);
63 _outFile = new QFile(lName);
64 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
65 _outFile->open(QIODevice::WriteOnly | QIODevice::Append);
66 }
67 else {
68 _outFile->open(QIODevice::WriteOnly);
69 }
70 _out = new QTextStream(_outFile);
71 _out->setRealNumberNotation(QTextStream::FixedNotation);
72 }
73 else {
74 _outFile = 0;
75 _out = 0;
76 }
77
78 _port = port;
79
80 if (_port != 0) {
81 _server = new QTcpServer;
82 if ( !_server->listen(QHostAddress::Any, _port) ) {
83 emit newMessage("bncCaster: Cannot listen on sync port", true);
84 }
85 connect(_server, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
86 _sockets = new QList<QTcpSocket*>;
87 }
88 else {
89 _server = 0;
90 _sockets = 0;
91 }
92
93 int uPort = settings.value("outUPort").toInt();
94 if (uPort != 0) {
95 _uServer = new QTcpServer;
96 if ( !_uServer->listen(QHostAddress::Any, uPort) ) {
97 emit newMessage("bncCaster: Cannot listen on usync port", true);
98 }
99 connect(_uServer, SIGNAL(newConnection()), this, SLOT(slotNewUConnection()));
100 _uSockets = new QList<QTcpSocket*>;
101 }
102 else {
103 _uServer = 0;
104 _uSockets = 0;
105 }
106
107 _epochs = new QMultiMap<long, p_obs>;
108
109 _lastDumpSec = 0;
110
111 _confInterval = -1;
112}
113
114// Destructor
115////////////////////////////////////////////////////////////////////////////
116bncCaster::~bncCaster() {
117 QListIterator<bncGetThread*> it(_threads);
118 while(it.hasNext()){
119 bncGetThread* thread = it.next();
120 thread->terminate();
121 }
122 delete _out;
123 delete _outFile;
124 delete _server;
125 delete _sockets;
126 delete _uServer;
127 delete _uSockets;
128 if (_epochs) {
129 QListIterator<p_obs> it(_epochs->values());
130 while (it.hasNext()) {
131 delete it.next();
132 }
133 delete _epochs;
134 }
135}
136
137// New Observations
138////////////////////////////////////////////////////////////////////////////
139void bncCaster::newObs(const QByteArray staID, bool firstObs, p_obs obs) {
140
141 QMutexLocker locker(&_mutex);
142
143 obs->_status = t_obs::received;
144
145 long iSec = long(floor(obs->_o.GPSWeeks+0.5));
146 long newTime = obs->_o.GPSWeek * 7*24*3600 + iSec;
147
148 // Rename the Station
149 // ------------------
150 strncpy(obs->_o.StatID, staID.constData(),sizeof(obs->_o.StatID));
151 obs->_o.StatID[sizeof(obs->_o.StatID)-1] = '\0';
152
153 const char begObs[] = "BEGOBS";
154 const int begObsNBytes = sizeof(begObs) - 1;
155
156 // Output into the socket
157 // ----------------------
158 if (_uSockets) {
159 QMutableListIterator<QTcpSocket*> is(*_uSockets);
160 while (is.hasNext()) {
161 QTcpSocket* sock = is.next();
162 if (sock->state() == QAbstractSocket::ConnectedState) {
163 bool ok = true;
164 if (myWrite(sock, begObs, begObsNBytes) != begObsNBytes) {
165 ok = false;
166 }
167 int numBytes = sizeof(obs->_o);
168 if (myWrite(sock, (const char*)(&obs->_o), numBytes) != numBytes) {
169 ok = false;
170 }
171 if (!ok) {
172 delete sock;
173 is.remove();
174 }
175 }
176 else if (sock->state() != QAbstractSocket::ConnectingState) {
177 delete sock;
178 is.remove();
179 }
180 }
181 }
182
183 // First time, set the _lastDumpSec immediately
184 // --------------------------------------------
185 if (_lastDumpSec == 0) {
186 _lastDumpSec = newTime - 1;
187 }
188
189 // An old observation - throw it away
190 // ----------------------------------
191 if (newTime <= _lastDumpSec) {
192 if (firstObs) {
193 bncSettings settings;
194 if ( !settings.value("outFile").toString().isEmpty() ||
195 !settings.value("outPort").toString().isEmpty() ) {
196
197 QTime enomtime = QTime(0,0,0).addSecs(iSec);
198
199 emit( newMessage(QString("%1: Old epoch %2 (%3) thrown away")
200 .arg(staID.data()).arg(iSec)
201 .arg(enomtime.toString("HH:mm:ss"))
202 .toAscii(), true) );
203 }
204 }
205 delete obs;
206 return;
207 }
208
209 // Save the observation
210 // --------------------
211 _epochs->insert(newTime, obs);
212
213 // Dump Epochs
214 // -----------
215 if (newTime - _waitTime > _lastDumpSec) {
216 dumpEpochs(_lastDumpSec + 1, newTime - _waitTime);
217 _lastDumpSec = newTime - _waitTime;
218 }
219}
220
221// New Connection
222////////////////////////////////////////////////////////////////////////////
223void bncCaster::slotNewConnection() {
224 _sockets->push_back( _server->nextPendingConnection() );
225 emit( newMessage(QString("New client connection on sync port: # %1")
226 .arg(_sockets->size()).toAscii(), true) );
227}
228
229void bncCaster::slotNewUConnection() {
230 _uSockets->push_back( _uServer->nextPendingConnection() );
231 emit( newMessage(QString("New client connection on usync port: # %1")
232 .arg(_uSockets->size()).toAscii(), true) );
233}
234
235// Add New Thread
236////////////////////////////////////////////////////////////////////////////
237void bncCaster::addGetThread(bncGetThread* getThread) {
238
239 qRegisterMetaType<p_obs>("p_obs");
240
241 connect(getThread, SIGNAL(newObs(QByteArray, bool, p_obs)),
242 this, SLOT(newObs(QByteArray, bool, p_obs)));
243
244 connect(getThread, SIGNAL(getThreadFinished(QByteArray)),
245 this, SLOT(slotGetThreadFinished(QByteArray)));
246
247 connect(((bncApp*)qApp), SIGNAL(newEphGPS(gpsephemeris)),
248 getThread, SLOT(slotNewEphGPS(gpsephemeris)));
249
250 _staIDs.push_back(getThread->staID());
251 _threads.push_back(getThread);
252
253 getThread->start();
254}
255
256// Get Thread destroyed
257////////////////////////////////////////////////////////////////////////////
258void bncCaster::slotGetThreadFinished(QByteArray staID) {
259 QMutexLocker locker(&_mutex);
260
261 QListIterator<bncGetThread*> it(_threads);
262 while (it.hasNext()) {
263 bncGetThread* thread = it.next();
264 if (thread->staID() == staID) {
265 _threads.removeOne(thread);
266 }
267 }
268
269 _staIDs.removeAll(staID);
270 emit( newMessage(
271 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii(), true) );
272 if (_staIDs.size() == 0) {
273 emit(newMessage("bncCaster: Last get thread terminated", true));
274 emit getThreadsFinished();
275 }
276}
277
278// Dump Complete Epochs
279////////////////////////////////////////////////////////////////////////////
280void bncCaster::dumpEpochs(long minTime, long maxTime) {
281
282 const char begEpoch[] = "BEGEPOCH";
283 const char endEpoch[] = "ENDEPOCH";
284
285 const int begEpochNBytes = sizeof(begEpoch) - 1;
286 const int endEpochNBytes = sizeof(endEpoch) - 1;
287
288 for (long sec = minTime; sec <= maxTime; sec++) {
289
290 bool first = true;
291 QList<p_obs> allObs = _epochs->values(sec);
292 QListIterator<p_obs> it(allObs);
293 while (it.hasNext()) {
294 p_obs obs = it.next();
295
296 if (_samplingRate == 0 || sec % _samplingRate == 0) {
297
298 if (first) {
299 QTime enomtime = QTime(0,0,0).addSecs(static_cast<int>(floor(obs->_o.GPSWeeks+0.5)));
300// emit( newMessage( QString("Epoch %1 dumped").arg(enomtime.toString("HH:mm:ss")).toAscii(), true) ); // weber
301 }
302 // Output into the file
303 // --------------------
304 if (_out) {
305 if (first) {
306 _out->setFieldWidth(1); *_out << begEpoch << endl;
307 }
308 _out->setFieldWidth(0); *_out << obs->_o.StatID;
309 _out->setFieldWidth(1); *_out << " " << obs->_o.satSys;
310 _out->setPadChar('0');
311 _out->setFieldWidth(2); *_out << obs->_o.satNum;
312 _out->setPadChar(' ');
313 _out->setFieldWidth(1); *_out << " ";
314 _out->setFieldWidth(4); *_out << obs->_o.GPSWeek;
315 _out->setFieldWidth(1); *_out << " ";
316 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->_o.GPSWeeks;
317 _out->setFieldWidth(1); *_out << " ";
318 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C1;
319 _out->setFieldWidth(1); *_out << " ";
320 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C2;
321 _out->setFieldWidth(1); *_out << " ";
322 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P1;
323 _out->setFieldWidth(1); *_out << " ";
324 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P2;
325 _out->setFieldWidth(1); *_out << " ";
326 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L1;
327 _out->setFieldWidth(1); *_out << " ";
328 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L2;
329 _out->setFieldWidth(1); *_out << " ";
330 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S1;
331 _out->setFieldWidth(1); *_out << " ";
332 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S2;
333 _out->setFieldWidth(1);
334 *_out << " " << obs->_o.SNR1 << " " << obs->_o.SNR2 << endl;
335 if (!it.hasNext()) {
336 _out->setFieldWidth(1); *_out << endEpoch << endl;
337 }
338 _out->flush();
339 }
340
341 // Output into the socket
342 // ----------------------
343 if (_sockets) {
344 QMutableListIterator<QTcpSocket*> is(*_sockets);
345 while (is.hasNext()) {
346 QTcpSocket* sock = is.next();
347 if (sock->state() == QAbstractSocket::ConnectedState) {
348 bool ok = true;
349 if (first) {
350 if (myWrite(sock, begEpoch, begEpochNBytes) != begEpochNBytes) {
351 ok = false;
352 }
353 }
354 int numBytes = sizeof(obs->_o);
355 if (myWrite(sock, (const char*)(&obs->_o), numBytes) != numBytes) {
356 ok = false;
357 }
358 if (!it.hasNext()) {
359 if (myWrite(sock, endEpoch, endEpochNBytes) != endEpochNBytes) {
360 ok = false;
361 }
362 }
363 if (!ok) {
364 delete sock;
365 is.remove();
366 }
367 }
368 else if (sock->state() != QAbstractSocket::ConnectingState) {
369 delete sock;
370 is.remove();
371 }
372 }
373 }
374 }
375
376 delete obs;
377 _epochs->remove(sec);
378 first = false;
379 }
380 }
381}
382
383// Reread configuration
384////////////////////////////////////////////////////////////////////////////
385void bncCaster::slotReadMountPoints() {
386
387 bncSettings settings;
388
389 // Reread several options
390 // ----------------------
391 _samplingRate = settings.value("binSampl").toInt();
392 _waitTime = settings.value("waitTime").toInt();
393 if (_waitTime < 1) {
394 _waitTime = 1;
395 }
396
397 // Add new mountpoints
398 // -------------------
399 int iMount = -1;
400 QListIterator<QString> it(settings.value("mountPoints").toStringList());
401 while (it.hasNext()) {
402 ++iMount;
403 QStringList hlp = it.next().split(" ");
404 if (hlp.size() <= 1) continue;
405 QUrl url(hlp[0]);
406
407 // Does it already exist?
408 // ----------------------
409 bool existFlg = false;
410 QListIterator<bncGetThread*> iTh(_threads);
411 while (iTh.hasNext()) {
412 bncGetThread* thread = iTh.next();
413 if (thread->mountPoint() == url) {
414 existFlg = true;
415 break;
416 }
417 }
418
419 // New bncGetThread
420 // ----------------
421 if (!existFlg) {
422 QByteArray format = hlp[1].toAscii();
423 QByteArray latitude = hlp[2].toAscii();
424 QByteArray longitude = hlp[3].toAscii();
425 QByteArray nmea = hlp[4].toAscii();
426 QByteArray ntripVersion = hlp[5].toAscii();
427
428 bncGetThread* getThread = new bncGetThread(url, format, latitude,
429 longitude, nmea, ntripVersion, "");
430 addGetThread(getThread);
431 }
432 }
433
434 // Remove mountpoints
435 // ------------------
436 QListIterator<bncGetThread*> iTh(_threads);
437 while (iTh.hasNext()) {
438 bncGetThread* thread = iTh.next();
439
440 bool existFlg = false;
441 QListIterator<QString> it(settings.value("mountPoints").toStringList());
442 while (it.hasNext()) {
443 QStringList hlp = it.next().split(" ");
444 if (hlp.size() <= 1) continue;
445 QUrl url(hlp[0]);
446
447 if (thread->mountPoint() == url) {
448 existFlg = true;
449 break;
450 }
451 }
452
453 if (!existFlg) {
454 disconnect(thread, 0, 0, 0);
455 _staIDs.removeAll(thread->staID());
456 _threads.removeAll(thread);
457 thread->terminate();
458 }
459 }
460
461 emit mountPointsRead(_threads);
462 emit( newMessage(QString("Configuration read: "
463 + ((bncApp*) qApp)->confFileName()
464 + ", %1 stream(s)")
465 .arg(_threads.count()).toAscii(), true) );
466
467 // (Re-) Start the configuration timer
468 // -----------------------------------
469 int ms = 0;
470
471 if (_confInterval != -1) {
472 ms = 1000 * _confInterval;
473 }
474 else {
475 QTime currTime = currentDateAndTimeGPS().time();
476 QTime nextShotTime;
477
478 if (settings.value("onTheFlyInterval").toString() == "1 min") {
479 _confInterval = 60;
480 nextShotTime = QTime(currTime.hour(), currTime.minute()+1, 0);
481 }
482 else if (settings.value("onTheFlyInterval").toString() == "1 hour") {
483 _confInterval = 3600;
484 nextShotTime = QTime(currTime.hour()+1, 0, 0);
485 }
486 else {
487 _confInterval = 86400;
488 nextShotTime = QTime(23, 59, 59, 999);
489 }
490
491 ms = currTime.msecsTo(nextShotTime);
492 if (ms < 30000) {
493 ms = 30000;
494 }
495 }
496
497 QTimer::singleShot(ms, this, SLOT(slotReadMountPoints()));
498}
499
500//
501////////////////////////////////////////////////////////////////////////////
502int bncCaster::myWrite(QTcpSocket* sock, const char* buf, int bufLen) {
503 sock->write(buf, bufLen);
504 for (int ii = 1; ii <= 10; ii++) {
505 if (sock->waitForBytesWritten(10)) { // wait 10 ms
506 return bufLen;
507 }
508 }
509 return -1;
510}
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