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