code.vuplus.com Git - vuplus_dvbapp/blob - lib/dvb/dvbtime.cpp

   1 #include <lib/dvb/dvbtime.h>
   2 #include <lib/dvb/dvb.h>
   3
   4 #include <sys/ioctl.h>
   5 #include <stdio.h>
   6 #include <sys/types.h>
   7 #include <sys/stat.h>
   8 #include <fcntl.h>
   9
  10 // defines for DM7000 / DM7020
  11 #define FP_IOCTL_SET_RTC         0x101
  12 #define FP_IOCTL_GET_RTC         0x102
  13
  14 #define TIME_UPDATE_INTERVAL (30*60*1000)
  15
  16 static time_t prev_time;
  17
  18 void setRTC(time_t time)
  19 {
  20         FILE *f = fopen("/proc/stb/fp/rtc", "w");
  21         if (f)
  22         {
  23                 if (fprintf(f, "%u", time))
  24                         prev_time = time;
  25                 else
  26                         eDebug("write /proc/stb/fp/rtc failed (%m)");
  27                 fclose(f);
  28         }
  29         else
  30         {
  31                 int fd = open("/dev/dbox/fp0", O_RDWR);
  32                 if ( fd >= 0 )
  33                 {
  34                         if ( ::ioctl(fd, FP_IOCTL_SET_RTC, (void*)&time ) < 0 )
  35                                 eDebug("FP_IOCTL_SET_RTC failed(%m)");
  36                         else
  37                                 prev_time = time;
  38                         close(fd);
  39                 }
  40         }
  41 }
  42
  43 time_t getRTC()
  44 {
  45         time_t rtc_time=0;
  46         FILE *f = fopen("/proc/stb/fp/rtc", "r");
  47         if (f)
  48         {
  49                 // sanity check to detect corrupt atmel firmware
  50                 if (fscanf(f, "%u", &rtc_time) != 1)
  51                         eDebug("read /proc/stb/fp/rtc failed (%m)");
  52                 fclose(f);
  53         }
  54         else
  55         {
  56                 int fd = open("/dev/dbox/fp0", O_RDWR);
  57                 if ( fd >= 0 )
  58                 {
  59                         if ( ::ioctl(fd, FP_IOCTL_GET_RTC, (void*)&rtc_time ) < 0 )
  60                                 eDebug("FP_IOCTL_GET_RTC failed(%m)");
  61                         close(fd);
  62                 }
  63         }
  64         return rtc_time != prev_time ? rtc_time : 0;
  65 }
  66
  67 time_t parseDVBtime(__u8 t1, __u8 t2, __u8 t3, __u8 t4, __u8 t5)
  68 {
  69         tm t;
  70         t.tm_sec=fromBCD(t5);
  71         t.tm_min=fromBCD(t4);
  72         t.tm_hour=fromBCD(t3);
  73         int mjd=(t1<<8)|t2;
  74         int k;
  75
  76         t.tm_year = (int) ((mjd - 15078.2) / 365.25);
  77         t.tm_mon = (int) ((mjd - 14956.1 - (int)(t.tm_year * 365.25)) / 30.6001);
  78         t.tm_mday = (int) (mjd - 14956 - (int)(t.tm_year * 365.25) - (int)(t.tm_mon * 30.6001));
  79         k = (t.tm_mon == 14 || t.tm_mon == 15) ? 1 : 0;
  80         t.tm_year = t.tm_year + k;
  81         t.tm_mon = t.tm_mon - 1 - k * 12;
  82         t.tm_mon--;
  83
  84         t.tm_isdst =  0;
  85         t.tm_gmtoff = 0;
  86
  87         return timegm(&t);
  88 }
  89
  90 TDT::TDT(eDVBChannel *chan, int update_count)
  91         :chan(chan), m_interval_timer(eTimer::create()), update_count(update_count)
  92 {
  93         CONNECT(tableReady, TDT::ready);
  94         CONNECT(m_interval_timer->timeout, TDT::start);
  95         if (chan)
  96                 chan->getDemux(demux, 0);
  97 }
  98
  99 void TDT::ready(int error)
 100 {
 101         eDVBLocalTimeHandler::getInstance()->updateTime(error, chan, ++update_count);
 102 }
 103
 104 int TDT::createTable(unsigned int nr, const __u8 *data, unsigned int max)
 105 {
 106         if ( data && data[0] == 0x70 || data[0] == 0x73 )
 107         {
 108                 int length = ((data[1] & 0x0F) << 8) | data[2];
 109                 if ( length >= 5 )
 110                 {
 111                         time_t tptime = parseDVBtime(data[3], data[4], data[5], data[6], data[7]);
 112                         if (tptime && tptime != -1)
 113                                 eDVBLocalTimeHandler::getInstance()->updateTime(tptime, chan, update_count);
 114                         error=0;
 115                         return 1;
 116                 }
 117         }
 118         return 0;
 119 }
 120
 121 void TDT::start()
 122 {
 123         if ( chan )
 124         {
 125                 eDVBTableSpec spec;
 126                 spec.pid = TimeAndDateSection::PID;
 127                 spec.tid = TimeAndDateSection::TID;
 128                 spec.tid_mask = 0xFC;
 129                 spec.timeout = TimeAndDateSection::TIMEOUT;
 130                 spec.flags= eDVBTableSpec::tfAnyVersion |
 131                                         eDVBTableSpec::tfHaveTID |
 132                                         eDVBTableSpec::tfHaveTIDMask |
 133                                         eDVBTableSpec::tfHaveTimeout;
 134                 if ( demux )
 135                         eGTable::start( demux, spec );
 136         }
 137 }
 138
 139 void TDT::startTimer( int interval )
 140 {
 141         m_interval_timer->start(interval, true);
 142 }
 143
 144 eDVBLocalTimeHandler *eDVBLocalTimeHandler::instance;
 145 DEFINE_REF(eDVBLocalTimeHandler);
 146
 147 eDVBLocalTimeHandler::eDVBLocalTimeHandler()
 148         :m_use_dvb_time(false), m_updateNonTunedTimer(eTimer::create(eApp)), m_time_ready(false)
 149 {
 150         if ( !instance )
 151                 instance=this;
 152         ePtr<eDVBResourceManager> res_mgr;
 153         eDVBResourceManager::getInstance(res_mgr);
 154         if (!res_mgr)
 155                 eDebug("[eDVBLocalTimerHandler] no resource manager !!!!!!!");
 156         else
 157         {
 158                 res_mgr->connectChannelAdded(slot(*this,&eDVBLocalTimeHandler::DVBChannelAdded), m_chanAddedConn);
 159                 time_t now = time(0);
 160                 if ( now < 1072224000 ) // 01.01.2004
 161                         eDebug("RTC not ready... wait for transponder time");
 162                 else // inform all who's waiting for valid system time..
 163                 {
 164                         eDebug("Use valid Linux Time :) (RTC?)");
 165                         m_time_ready = true;
 166                         /*emit*/ m_timeUpdated();
 167                 }
 168         }
 169         CONNECT(m_updateNonTunedTimer->timeout, eDVBLocalTimeHandler::updateNonTuned);
 170 }
 171
 172 eDVBLocalTimeHandler::~eDVBLocalTimeHandler()
 173 {
 174         instance=0;
 175         if (ready())
 176         {
 177                 eDebug("set RTC to previous valid time");
 178                 setRTC(::time(0));
 179         }
 180 }
 181
 182 void eDVBLocalTimeHandler::readTimeOffsetData( const char* filename )
 183 {
 184         m_timeOffsetMap.clear();
 185         FILE *f=fopen(filename, "r");
 186         if (!f)
 187                 return;
 188         char line[256];
 189         fgets(line, 256, f);
 190         while (true)
 191         {
 192                 if (!fgets( line, 256, f ))
 193                         break;
 194                 if (strstr(line, "Transponder UTC Time Offsets\n"))
 195                         continue;
 196                 int dvbnamespace,tsid,onid,offs;
 197                 if ( sscanf( line, "%08x,%04x,%04x:%d\n",&dvbnamespace,&tsid,&onid,&offs ) == 4 )
 198                         m_timeOffsetMap[eDVBChannelID(dvbnamespace,tsid,onid)]=offs;
 199         }
 200         fclose(f);
 201 }
 202
 203 void eDVBLocalTimeHandler::writeTimeOffsetData( const char* filename )
 204 {
 205         FILE *f=fopen(filename, "w+");
 206         if ( f )
 207         {
 208                 fprintf(f, "Transponder UTC Time Offsets\n");
 209                 for ( std::map<eDVBChannelID,int>::iterator it ( m_timeOffsetMap.begin() ); it != m_timeOffsetMap.end(); ++it )
 210                         fprintf(f, "%08x,%04x,%04x:%d\n",
 211                                 it->first.dvbnamespace.get(),
 212                                 it->first.transport_stream_id.get(), it->first.original_network_id.get(), it->second );
 213                 fclose(f);
 214         }
 215 }
 216
 217 void eDVBLocalTimeHandler::setUseDVBTime(bool b)
 218 {
 219         if (m_use_dvb_time != b) {
 220                 if (m_use_dvb_time) {
 221                         eDebug("[eDVBLocalTimeHandler] disable sync local time with transponder time!");
 222                         std::map<iDVBChannel*, channel_data>::iterator it =
 223                                 m_knownChannels.begin();
 224                         for (; it != m_knownChannels.end(); ++it) {
 225                                 if (it->second.m_prevChannelState == iDVBChannel::state_ok)
 226                                         it->second.tdt = 0;
 227                         }
 228                 }
 229                 else {
 230                         eDebug("[eDVBLocalTimeHandler] enable sync local time with transponder time!");
 231                         std::map<iDVBChannel*, channel_data>::iterator it =
 232                                 m_knownChannels.begin();
 233                         for (; it != m_knownChannels.end(); ++it) {
 234                                 if (it->second.m_prevChannelState == iDVBChannel::state_ok) {
 235                                         it->second.tdt = new TDT(it->second.channel);
 236                                         it->second.tdt->start();
 237                                 }
 238                         }
 239                 }
 240                 m_use_dvb_time = b;
 241         }
 242 }
 243
 244 void eDVBLocalTimeHandler::updateNonTuned()
 245 {
 246         updateTime(-1, 0, 0);
 247         m_updateNonTunedTimer->start(TIME_UPDATE_INTERVAL, true);
 248 }
 249
 250 void eDVBLocalTimeHandler::updateTime( time_t tp_time, eDVBChannel *chan, int update_count )
 251 {
 252         int time_difference;
 253         bool restart_tdt = false;
 254         if (!tp_time)
 255                 restart_tdt = true;
 256         else if (tp_time == -1)
 257         {
 258                 restart_tdt = true;
 259                 /*if ( eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7020 ||
 260                 ( eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7000
 261                         && eSystemInfo::getInstance()->hasStandbyWakeupTimer() ) )     TODO !!!!!!! */
 262                 {
 263                         eDebug("[eDVBLocalTimerHandler] no transponder tuned... or no TDT/TOT avail .. try to use RTC :)");
 264                         time_t rtc_time = getRTC();
 265                         if ( rtc_time ) // RTC Ready?
 266                         {
 267                                 tm now;
 268                                 localtime_r(&rtc_time, &now);
 269                                 eDebug("[eDVBLocalTimerHandler] RTC time is %02d:%02d:%02d",
 270                                         now.tm_hour,
 271                                         now.tm_min,
 272                                         now.tm_sec);
 273                                 time_t linuxTime=time(0);
 274                                 localtime_r(&linuxTime, &now);
 275                                 eDebug("[eDVBLocalTimerHandler] Receiver time is %02d:%02d:%02d",
 276                                         now.tm_hour,
 277                                         now.tm_min,
 278                                         now.tm_sec);
 279                                 time_difference = rtc_time - linuxTime;
 280                                 eDebug("[eDVBLocalTimerHandler] RTC to Receiver time difference is %ld seconds", linuxTime - rtc_time );
 281                                 if ( time_difference )
 282                                 {
 283                                         eDebug("[eDVBLocalTimerHandler] set Linux Time to RTC Time");
 284                                         timeval tnow;
 285                                         gettimeofday(&tnow,0);
 286                                         tnow.tv_sec=rtc_time;
 287                                         settimeofday(&tnow,0);
 288                                 }
 289                                 else if ( !time_difference )
 290                                         eDebug("[eDVBLocalTimerHandler] no change needed");
 291                                 else
 292                                         eDebug("[eDVBLocalTimerHandler] set to RTC time");
 293                                 /*emit*/ m_timeUpdated();
 294                         }
 295                         else
 296                                 eDebug("[eDVBLocalTimerHandler] shit RTC not ready :(");
 297                 }
 298         }
 299         else
 300         {
 301                 std::map< eDVBChannelID, int >::iterator it( m_timeOffsetMap.find( chan->getChannelID() ) );
 302
 303  // current linux time
 304                 time_t linuxTime = time(0);
 305
 306         // difference between current enigma time and transponder time
 307                 int enigma_diff = tp_time-linuxTime;
 308
 309                 int new_diff=0;
 310
 311                 bool updated = m_time_ready;
 312
 313                 if ( m_time_ready )  // ref time ready?
 314                 {
 315                         // difference between reference time (current enigma time)
 316                         // and the transponder time
 317                         eDebug("[eDVBLocalTimerHandler] diff is %d", enigma_diff);
 318                         if ( abs(enigma_diff) < 120 )
 319                         {
 320                                 eDebug("[eDVBLocalTimerHandler] diff < 120 .. use Transponder Time");
 321                                 m_timeOffsetMap[chan->getChannelID()] = 0;
 322                                 new_diff = enigma_diff;
 323                         }
 324                         else if ( it != m_timeOffsetMap.end() ) // correction saved?
 325                         {
 326                                 eDebug("[eDVBLocalTimerHandler] we have correction %d", it->second);
 327                                 time_t CorrectedTpTime = tp_time+it->second;
 328                                 int ddiff = CorrectedTpTime-linuxTime;
 329                                 eDebug("[eDVBLocalTimerHandler] diff after add correction is %d", ddiff);
 330                                 if ( abs(it->second) < 300 ) // stored correction < 5 min
 331                                 {
 332                                         eDebug("[eDVBLocalTimerHandler] use stored correction(<5 min)");
 333                                         new_diff = ddiff;
 334                                 }
 335                                 else if ( getRTC() )
 336                                 {
 337                                         time_t rtc=getRTC();
 338                                         m_timeOffsetMap[chan->getChannelID()] = rtc-tp_time;
 339                                         new_diff = rtc-linuxTime;  // set enigma time to rtc
 340                                         eDebug("[eDVBLocalTimerHandler] update stored correction to %ld (calced against RTC time)", rtc-tp_time );
 341                                 }
 342                                 else if ( abs(ddiff) <= 120 )
 343                                 {
 344 // with stored correction calced time difference is lower 2 min
 345 // this don't help when a transponder have a clock running to slow or to fast
 346 // then its better to have a DM7020 with always running RTC
 347                                         eDebug("[eDVBLocalTimerHandler] use stored correction(corr < 2 min)");
 348                                         new_diff = ddiff;
 349                                 }
 350                                 else  // big change in calced correction.. hold current time and update correction
 351                                 {
 352                                         eDebug("[eDVBLocalTimerHandler] update stored correction to %d", -enigma_diff);
 353                                         m_timeOffsetMap[chan->getChannelID()] = -enigma_diff;
 354                                 }
 355                         }
 356                         else
 357                         {
 358                                 eDebug("[eDVBLocalTimerHandler] no correction found... store calced correction(%d)",-enigma_diff);
 359                                 m_timeOffsetMap[chan->getChannelID()] = -enigma_diff;
 360                         }
 361                 }
 362                 else  // no time setted yet
 363                 {
 364                         if ( it != m_timeOffsetMap.end() )
 365                         {
 366                                 enigma_diff += it->second;
 367                                 eDebug("[eDVBLocalTimerHandler] we have correction (%d)... use", it->second );
 368                         }
 369                         else
 370                                 eDebug("[eDVBLocalTimerHandler] dont have correction.. set Transponder Diff");
 371                         new_diff=enigma_diff;
 372                         m_time_ready=true;
 373                 }
 374
 375                 time_t t = linuxTime+new_diff;
 376                 m_last_tp_time_difference=tp_time-t;
 377
 378                 if (!new_diff &&
 379                         updated) // overrride this check on first received TDT
 380                 {
 381                         eDebug("[eDVBLocalTimerHandler] not changed");
 382                         return;
 383                 }
 384
 385                 if ( !update_count )
 386                 {
 387                         // set rtc to calced transponder time when the first tdt is received on this
 388                         // transponder
 389                         setRTC(t);
 390                         eDebug("[eDVBLocalTimerHandler] update RTC");
 391                 }
 392                 else if (getRTC())
 393                 {
 394                         if (abs(getRTC() - t) > 60)
 395                         {
 396                                 eDebug("[eDVBLocalTimerHandler] difference between new linux time and RTC time is > 60 sec... transponder time looks not ok... use rtc time");
 397                                 t = getRTC();
 398                         }
 399                         else
 400                                 eDebug("[eDVBLocalTimerHandler] difference between linux time and RTC time is < 60 sec... so the transponder time looks ok");
 401                 }
 402                 else
 403                         eDebug("[eDVBLocalTimerHandler] no RTC available :(");
 404
 405                 tm now;
 406                 localtime_r(&t, &now);
 407                 eDebug("[eDVBLocalTimerHandler] time update to %02d:%02d:%02d",
 408                         now.tm_hour,
 409                         now.tm_min,
 410                         now.tm_sec);
 411
 412                 time_difference = t - linuxTime;   // calc our new linux_time -> enigma_time correction
 413                 eDebug("[eDVBLocalTimerHandler] m_time_difference is %d", time_difference );
 414
 415                 if ( time_difference )
 416                 {
 417                         eDebug("[eDVBLocalTimerHandler] set Linux Time");
 418                         timeval tnow;
 419                         gettimeofday(&tnow,0);
 420                         tnow.tv_sec=t;
 421                         settimeofday(&tnow,0);
 422                 }
 423
 424                  /*emit*/ m_timeUpdated();
 425         }
 426
 427         if ( restart_tdt )
 428         {
 429                 std::map<iDVBChannel*, channel_data>::iterator it =
 430                         m_knownChannels.find(chan);
 431                 if ( it != m_knownChannels.end() )
 432                 {
 433                         int updateCount = it->second.tdt->getUpdateCount();
 434                         it->second.tdt = 0;
 435                         it->second.tdt = new TDT(chan, updateCount);
 436                         it->second.tdt->startTimer(TIME_UPDATE_INTERVAL);  // restart TDT for this transponder in 30min
 437                 }
 438         }
 439 }
 440
 441 void eDVBLocalTimeHandler::DVBChannelAdded(eDVBChannel *chan)
 442 {
 443         if ( chan )
 444         {
 445 //              eDebug("[eDVBLocalTimerHandler] add channel %p", chan);
 446                 std::pair<std::map<iDVBChannel*, channel_data>::iterator, bool> tmp =
 447                         m_knownChannels.insert( std::pair<iDVBChannel*, channel_data>(chan, channel_data()) );
 448                 tmp.first->second.tdt = NULL;
 449                 tmp.first->second.channel = chan;
 450                 tmp.first->second.m_prevChannelState = -1;
 451                 chan->connectStateChange(slot(*this, &eDVBLocalTimeHandler::DVBChannelStateChanged), tmp.first->second.m_stateChangedConn);
 452         }
 453 }
 454
 455 void eDVBLocalTimeHandler::DVBChannelStateChanged(iDVBChannel *chan)
 456 {
 457         std::map<iDVBChannel*, channel_data>::iterator it =
 458                 m_knownChannels.find(chan);
 459         if ( it != m_knownChannels.end() )
 460         {
 461                 int state=0;
 462                 chan->getState(state);
 463                 if ( state != it->second.m_prevChannelState )
 464                 {
 465                         switch (state)
 466                         {
 467                                 case iDVBChannel::state_ok:
 468                                         eDebug("[eDVBLocalTimerHandler] channel %p running", chan);
 469                                         m_updateNonTunedTimer->stop();
 470                                         if (m_use_dvb_time) {
 471                                                 it->second.tdt = new TDT(it->second.channel);
 472                                                 it->second.tdt->start();
 473                                         }
 474                                         break;
 475                                 case iDVBChannel::state_release:
 476                                         eDebug("[eDVBLocalTimerHandler] remove channel %p", chan);
 477                                         m_knownChannels.erase(it);
 478                                         if (m_knownChannels.empty())
 479                                                 m_updateNonTunedTimer->start(TIME_UPDATE_INTERVAL, true);
 480                                         break;
 481                                 default: // ignore all other events
 482                                         return;
 483                         }
 484                         it->second.m_prevChannelState = state;
 485                 }
 486         }
 487 }