source: ntrip/trunk/BNC/bnccaster.cpp@ 1482

Last change on this file since 1482 was 1450, checked in by weber, 16 years ago

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File size: 14.6 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 "RTCM/GPSDecoder.h"
49
50// Constructor
51////////////////////////////////////////////////////////////////////////////
52bncCaster::bncCaster(const QString& outFileName, int port) {
53
54 QSettings settings;
55
56 connect(this, SIGNAL(newMessage(QByteArray,bool)),
57 (bncApp*) qApp, SLOT(slotMessage(const QByteArray,bool)));
58
59 if ( !outFileName.isEmpty() ) {
60 QString lName = outFileName;
61 expandEnvVar(lName);
62 _outFile = new QFile(lName);
63 if ( Qt::CheckState(settings.value("rnxAppend").toInt()) == Qt::Checked) {
64 _outFile->open(QIODevice::WriteOnly | QIODevice::Append);
65 }
66 else {
67 _outFile->open(QIODevice::WriteOnly);
68 }
69 _out = new QTextStream(_outFile);
70 _out->setRealNumberNotation(QTextStream::FixedNotation);
71 }
72 else {
73 _outFile = 0;
74 _out = 0;
75 }
76
77 _port = port;
78
79 if (_port != 0) {
80 _server = new QTcpServer;
81 if ( !_server->listen(QHostAddress::Any, _port) ) {
82 emit newMessage("bncCaster: Cannot listen on sync port", true);
83 }
84 connect(_server, SIGNAL(newConnection()), this, SLOT(slotNewConnection()));
85 _sockets = new QList<QTcpSocket*>;
86 }
87 else {
88 _server = 0;
89 _sockets = 0;
90 }
91
92 int uPort = settings.value("outUPort").toInt();
93 if (uPort != 0) {
94 _uServer = new QTcpServer;
95 if ( !_uServer->listen(QHostAddress::Any, uPort) ) {
96 emit newMessage("bncCaster: Cannot listen on usync port", true);
97 }
98 connect(_uServer, SIGNAL(newConnection()), this, SLOT(slotNewUConnection()));
99 _uSockets = new QList<QTcpSocket*>;
100 }
101 else {
102 _uServer = 0;
103 _uSockets = 0;
104 }
105
106 _epochs = new QMultiMap<long, p_obs>;
107
108 _lastDumpSec = 0;
109
110 _confTimer = 0;
111}
112
113// Destructor
114////////////////////////////////////////////////////////////////////////////
115bncCaster::~bncCaster() {
116 QListIterator<bncGetThread*> it(_threads);
117 while(it.hasNext()){
118 bncGetThread* thread = it.next();
119 thread->terminate();
120 delete thread;
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 QSettings settings;
194 if ( !settings.value("outFile").toString().isEmpty() ||
195 !settings.value("outPort").toString().isEmpty() ) {
196 emit( newMessage(QString("%1: Old epoch %2 thrown away")
197 .arg(staID.data()).arg(iSec).toAscii(), true) );
198 }
199 }
200 delete obs;
201 return;
202 }
203
204 // Save the observation
205 // --------------------
206 _epochs->insert(newTime, obs);
207
208 // Dump Epochs
209 // -----------
210 if (newTime - _waitTime > _lastDumpSec) {
211 dumpEpochs(_lastDumpSec + 1, newTime - _waitTime);
212 _lastDumpSec = newTime - _waitTime;
213 }
214}
215
216// New Connection
217////////////////////////////////////////////////////////////////////////////
218void bncCaster::slotNewConnection() {
219 _sockets->push_back( _server->nextPendingConnection() );
220 emit( newMessage(QString("New client connection on sync port: # %1")
221 .arg(_sockets->size()).toAscii(), true) );
222}
223
224void bncCaster::slotNewUConnection() {
225 _uSockets->push_back( _uServer->nextPendingConnection() );
226 emit( newMessage(QString("New client connection on usync port: # %1")
227 .arg(_uSockets->size()).toAscii(), true) );
228}
229
230// Add New Thread
231////////////////////////////////////////////////////////////////////////////
232void bncCaster::addGetThread(bncGetThread* getThread) {
233
234 qRegisterMetaType<p_obs>("p_obs");
235
236 connect(getThread, SIGNAL(newObs(QByteArray, bool, p_obs)),
237 this, SLOT(newObs(QByteArray, bool, p_obs)));
238
239 connect(getThread, SIGNAL(error(QByteArray)),
240 this, SLOT(slotGetThreadError(QByteArray)));
241
242 _staIDs.push_back(getThread->staID());
243 _threads.push_back(getThread);
244
245 getThread->start();
246}
247
248// Error in get thread
249////////////////////////////////////////////////////////////////////////////
250void bncCaster::slotGetThreadError(QByteArray staID) {
251 QMutexLocker locker(&_mutex);
252 _staIDs.removeAll(staID);
253 emit( newMessage(
254 QString("Mountpoint size %1").arg(_staIDs.size()).toAscii(), true) );
255 if (_staIDs.size() == 0) {
256 emit(newMessage("bncCaster: Last get thread terminated", true));
257 emit getThreadErrors();
258 }
259}
260
261// Dump Complete Epochs
262////////////////////////////////////////////////////////////////////////////
263void bncCaster::dumpEpochs(long minTime, long maxTime) {
264
265 const char begEpoch[] = "BEGEPOCH";
266 const char endEpoch[] = "ENDEPOCH";
267
268 const int begEpochNBytes = sizeof(begEpoch) - 1;
269 const int endEpochNBytes = sizeof(endEpoch) - 1;
270
271 for (long sec = minTime; sec <= maxTime; sec++) {
272
273 bool first = true;
274 QList<p_obs> allObs = _epochs->values(sec);
275 QListIterator<p_obs> it(allObs);
276 while (it.hasNext()) {
277 p_obs obs = it.next();
278
279 if (_samplingRate == 0 || sec % _samplingRate == 0) {
280
281 // Output into the file
282 // --------------------
283 if (_out) {
284 if (first) {
285 _out->setFieldWidth(1); *_out << begEpoch << endl;;
286 }
287 _out->setFieldWidth(0); *_out << obs->_o.StatID;
288 _out->setFieldWidth(1); *_out << " " << obs->_o.satSys;
289 _out->setPadChar('0');
290 _out->setFieldWidth(2); *_out << obs->_o.satNum;
291 _out->setPadChar(' ');
292 _out->setFieldWidth(1); *_out << " ";
293 _out->setFieldWidth(4); *_out << obs->_o.GPSWeek;
294 _out->setFieldWidth(1); *_out << " ";
295 _out->setFieldWidth(14); _out->setRealNumberPrecision(7); *_out << obs->_o.GPSWeeks;
296 _out->setFieldWidth(1); *_out << " ";
297 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C1;
298 _out->setFieldWidth(1); *_out << " ";
299 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.C2;
300 _out->setFieldWidth(1); *_out << " ";
301 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P1;
302 _out->setFieldWidth(1); *_out << " ";
303 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.P2;
304 _out->setFieldWidth(1); *_out << " ";
305 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L1;
306 _out->setFieldWidth(1); *_out << " ";
307 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.L2;
308 _out->setFieldWidth(1); *_out << " ";
309 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S1;
310 _out->setFieldWidth(1); *_out << " ";
311 _out->setFieldWidth(14); _out->setRealNumberPrecision(3); *_out << obs->_o.S2;
312 _out->setFieldWidth(1);
313 *_out << " " << obs->_o.SNR1 << " " << obs->_o.SNR2 << endl;
314 if (!it.hasNext()) {
315 _out->setFieldWidth(1); *_out << endEpoch << endl;
316 }
317 _out->flush();
318 }
319
320 // Output into the socket
321 // ----------------------
322 if (_sockets) {
323 QMutableListIterator<QTcpSocket*> is(*_sockets);
324 while (is.hasNext()) {
325 QTcpSocket* sock = is.next();
326 if (sock->state() == QAbstractSocket::ConnectedState) {
327 bool ok = true;
328 if (first) {
329 if (myWrite(sock, begEpoch, begEpochNBytes) != begEpochNBytes) {
330 ok = false;
331 }
332 }
333 int numBytes = sizeof(obs->_o);
334 if (myWrite(sock, (const char*)(&obs->_o), numBytes) != numBytes) {
335 ok = false;
336 }
337 if (!it.hasNext()) {
338 if (myWrite(sock, endEpoch, endEpochNBytes) != endEpochNBytes) {
339 ok = false;
340 }
341 }
342 if (!ok) {
343 delete sock;
344 is.remove();
345 }
346 }
347 else if (sock->state() != QAbstractSocket::ConnectingState) {
348 delete sock;
349 is.remove();
350 }
351 }
352 }
353 }
354
355 delete obs;
356 _epochs->remove(sec);
357 first = false;
358 }
359 }
360}
361
362// Reread configuration
363////////////////////////////////////////////////////////////////////////////
364void bncCaster::slotReadMountPoints() {
365
366 QSettings settings;
367
368 // Reread several options
369 // ----------------------
370 _samplingRate = settings.value("binSampl").toInt();
371 _waitTime = settings.value("waitTime").toInt();
372 if (_waitTime < 1) {
373 _waitTime = 1;
374 }
375
376 // Add new mountpoints
377 // -------------------
378 int iMount = -1;
379 QListIterator<QString> it(settings.value("mountPoints").toStringList());
380 while (it.hasNext()) {
381 ++iMount;
382 QStringList hlp = it.next().split(" ");
383 if (hlp.size() <= 1) continue;
384 QUrl url(hlp[0]);
385
386 // Does it already exist?
387 // ----------------------
388 bool existFlg = false;
389 QListIterator<bncGetThread*> iTh(_threads);
390 while (iTh.hasNext()) {
391 bncGetThread* thread = iTh.next();
392 if (thread->mountPoint() == url) {
393 existFlg = true;
394 break;
395 }
396 }
397
398 // New bncGetThread
399 // ----------------
400 if (!existFlg) {
401 QByteArray format = hlp[1].toAscii();
402 QByteArray latitude = hlp[2].toAscii();
403 QByteArray longitude = hlp[3].toAscii();
404 QByteArray nmea = hlp[4].toAscii();
405 QByteArray ntripVersion = hlp[5].toAscii();
406
407 bncGetThread* getThread = new bncGetThread(url, format, latitude,
408 longitude, nmea, ntripVersion, iMount);
409 addGetThread(getThread);
410 }
411 }
412
413 // Remove mountpoints
414 // ------------------
415 QListIterator<bncGetThread*> iTh(_threads);
416 while (iTh.hasNext()) {
417 bncGetThread* thread = iTh.next();
418
419 bool existFlg = false;
420 QListIterator<QString> it(settings.value("mountPoints").toStringList());
421 while (it.hasNext()) {
422 QStringList hlp = it.next().split(" ");
423 if (hlp.size() <= 1) continue;
424 QUrl url(hlp[0]);
425
426 if (thread->mountPoint() == url) {
427 existFlg = true;
428 break;
429 }
430 }
431
432 if (!existFlg) {
433 disconnect(thread, 0, 0, 0);
434 _staIDs.removeAll(thread->staID());
435 _threads.removeAll(thread);
436 thread->terminate();
437 delete thread;
438 }
439 }
440
441 emit mountPointsRead(_threads);
442 emit( newMessage(QString("Configuration read: %1 stream(s)")
443 .arg(_threads.count()).toAscii(), true) );
444
445 // (Re-) Start the configuration timer
446 // -----------------------------------
447 int ms = 0;
448
449 if (_confTimer) {
450 ms = 1000 * _confInterval;
451 }
452 else {
453 _confTimer = new QTimer();
454 connect(_confTimer, SIGNAL(timeout()), this, SLOT(slotReadMountPoints()));
455
456 QTime currTime = currentDateAndTimeGPS().time();
457 QTime nextShotTime;
458
459 if (settings.value("onTheFlyInterval").toString() == "1 min") {
460 _confInterval = 60;
461 nextShotTime = QTime(currTime.hour(), currTime.minute()+1, 0);
462 }
463 else if (settings.value("onTheFlyInterval").toString() == "1 hour") {
464 _confInterval = 3600;
465 nextShotTime = QTime(currTime.hour()+1, 0, 0);
466 }
467 else {
468 _confInterval = 86400;
469 nextShotTime = QTime(23, 59, 59, 999);
470 }
471
472 ms = currTime.msecsTo(nextShotTime);
473 if (ms < 30000) {
474 ms = 30000;
475 }
476 }
477
478 _confTimer->start(ms);
479}
480
481//
482////////////////////////////////////////////////////////////////////////////
483int bncCaster::myWrite(QTcpSocket* sock, const char* buf, int bufLen) {
484 sock->write(buf, bufLen);
485 for (int ii = 1; ii <= 10; ii++) {
486 if (sock->waitForBytesWritten(10)) { // wait 10 ms
487 return bufLen;
488 }
489 }
490 return -1;
491}
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