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)
  66         :chan(chan)
  67 {
  68         CONNECT(tableReady, TDT::ready);
  69         CONNECT(m_interval_timer.timeout, TDT::start);
  70         if (chan)
  71                 chan->getDemux(demux);
  72 }
  73
  74 void TDT::ready(int error)
  75 {
  76         eDVBLocalTimeHandler::getInstance()->updateTime(error, chan);
  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 >= 8 )
  85                 {
  86                         time_t tptime = parseDVBtime(data[3], data[4], data[5], data[6], data[7]);
  87                         eDVBLocalTimeHandler::getInstance()->updateTime(tptime, chan);
  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 = TimeAndDateTable::PID;
 101                 spec.tid = TimeAndDateTable::TID;
 102                 spec.tid_mask = 0xFC;
 103                 spec.timeout = TimeAndDateTable::TIMEOUT;
 104                 spec.flags= eDVBTableSpec::tfAnyVersion |
 105                                         eDVBTableSpec::tfHaveTID |
 106                                         eDVBTableSpec::tfHaveTIDMask |
 107                                         eDVBTableSpec::tfCheckCRC |
 108                                         eDVBTableSpec::tfHaveTimeout;
 109                 if ( demux )
 110                         eGTable::start( demux, spec );
 111         }
 112 }
 113
 114 void TDT::startTimer( int interval )
 115 {
 116         m_interval_timer.start(interval, true);
 117 }
 118
 119 eDVBLocalTimeHandler *eDVBLocalTimeHandler::instance;
 120 DEFINE_REF(eDVBLocalTimeHandler);
 121
 122 eDVBLocalTimeHandler::eDVBLocalTimeHandler()
 123         :m_time_ready(false), m_time_difference(0)
 124 {
 125         if ( !instance )
 126                 instance=this;
 127         ePtr<eDVBResourceManager> res_mgr;
 128         eDVBResourceManager::getInstance(res_mgr);
 129         if (!res_mgr)
 130                 eDebug("[eDVBLocalTimerHandler] no resource manager !!!!!!!");
 131         else
 132         {
 133                 res_mgr->connectChannelAdded(slot(*this,&eDVBLocalTimeHandler::DVBChannelAdded), m_chanAddedConn);
 134                 res_mgr->connectChannelRemoved(slot(*this,&eDVBLocalTimeHandler::DVBChannelRemoved), m_chanRemovedConn);
 135                 res_mgr->connectChannelRunning(slot(*this,&eDVBLocalTimeHandler::DVBChannelRunning), m_chanRunningConn);
 136         }
 137 }
 138
 139 eDVBLocalTimeHandler::~eDVBLocalTimeHandler()
 140 {
 141         instance=0;
 142         for (std::map<iDVBChannel*, TDT*>::iterator it=m_active_tables.begin(); it != m_active_tables.end(); ++it)
 143                 delete it->second;
 144 }
 145
 146 void eDVBLocalTimeHandler::readTimeOffsetData( const char* filename )
 147 {
 148         m_timeOffsetMap.clear();
 149         FILE *f=fopen(filename, "r");
 150         if (!f)
 151                 return;
 152         char line[256];
 153         fgets(line, 256, f);
 154         while (true)
 155         {
 156                 if (!fgets( line, 256, f ))
 157                         break;
 158                 if (strstr(line, "Transponder UTC Time Offsets\n"))
 159                         continue;
 160                 int dvbnamespace,tsid,onid,offs;
 161                 if ( sscanf( line, "%08x,%04x,%04x:%d\n",&dvbnamespace,&tsid,&onid,&offs ) == 4 )
 162                         m_timeOffsetMap[eDVBChannelID(dvbnamespace,tsid,onid)]=offs;
 163         }
 164         fclose(f);
 165 }
 166
 167 void eDVBLocalTimeHandler::writeTimeOffsetData( const char* filename )
 168 {
 169         FILE *f=fopen(filename, "w+");
 170         if ( f )
 171         {
 172                 fprintf(f, "Transponder UTC Time Offsets\n");
 173                 for ( std::map<eDVBChannelID,int>::iterator it ( m_timeOffsetMap.begin() ); it != m_timeOffsetMap.end(); ++it )
 174                         fprintf(f, "%08x,%04x,%04x:%d\n",
 175                                 it->first.dvbnamespace.get(),
 176                                 it->first.transport_stream_id.get(), it->first.original_network_id.get(), it->second );
 177                 fclose(f);
 178         }
 179 }
 180
 181 void eDVBLocalTimeHandler::updateTime( time_t tp_time, eDVBChannel *chan )
 182 {
 183         bool restart_tdt = false;
 184         if (!tp_time )
 185                 restart_tdt = true;
 186         else if (tp_time == -1)
 187         {
 188                 restart_tdt = true;
 189                 /*if ( eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7020 ||
 190                 ( eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7000
 191                         && eSystemInfo::getInstance()->hasStandbyWakeupTimer() ) )     TODO !!!!!!! */
 192                 {
 193                         eDebug("[eDVBLocalTimerHandler] no transponder tuned... or no TDT/TOT avail .. try to use RTC :)");
 194                         time_t rtc_time = getRTC();
 195                         if ( rtc_time ) // RTC Ready?
 196                         {
 197                                 tm now = *localtime(&rtc_time);
 198                                 eDebug("[eDVBLocalTimerHandler] RTC time is %02d:%02d:%02d",
 199                                         now.tm_hour,
 200                                         now.tm_min,
 201                                         now.tm_sec);
 202                                 time_t linuxTime=time(0);
 203                                 time_t nowTime=linuxTime+m_time_difference;
 204                                 now = *localtime(&nowTime);
 205                                 eDebug("[eDVBLocalTimerHandler] Receiver time is %02d:%02d:%02d",
 206                                         now.tm_hour,
 207                                         now.tm_min,
 208                                         now.tm_sec);
 209                                 m_time_difference = rtc_time - linuxTime;
 210                                 eDebug("[eDVBLocalTimerHandler] RTC to Receiver time difference is %d seconds", nowTime - rtc_time );
 211                                 if ( abs(m_time_difference) > 59 )
 212                                 {
 213                                         eDebug("[eDVBLocalTimerHandler] set Linux Time to RTC Time");
 214                                         timeval tnow;
 215                                         gettimeofday(&tnow,0);
 216                                         tnow.tv_sec=rtc_time;
 217                                         settimeofday(&tnow,0);
 218                                         for (ePtrList<eMainloop>::iterator it(eMainloop::existing_loops)
 219                                                 ;it != eMainloop::existing_loops.end(); ++it)
 220                                                 it->setTimerOffset(m_time_difference);
 221                                         m_time_difference=0;
 222                                 }
 223                                 else if ( !m_time_difference )
 224                                         eDebug("[eDVBLocalTimerHandler] no change needed");
 225                                 else
 226                                         eDebug("[eDVBLocalTimerHandler] set to RTC time");
 227                                 /*emit*/ m_timeUpdated();
 228                         }
 229                         else
 230                                 eDebug("[eDVBLocalTimerHandler] shit RTC not ready :(");
 231                 }
 232         }
 233         else
 234         {
 235                 std::map< eDVBChannelID, int >::iterator it( m_timeOffsetMap.find( chan->getChannelID() ) );
 236
 237  // current linux time
 238                 time_t linuxTime = time(0);
 239
 240  // current enigma time
 241                 time_t nowTime=linuxTime+m_time_difference;
 242
 243         // difference between current enigma time and transponder time
 244                 int enigma_diff = tp_time-nowTime;
 245
 246                 int new_diff=0;
 247
 248                 if ( m_time_ready )  // ref time ready?
 249                 {
 250                         // difference between reference time (current enigma time)
 251                         // and the transponder time
 252                         eDebug("[eDVBLocalTimerHandler] diff is %d", enigma_diff);
 253                         if ( abs(enigma_diff) < 120 )
 254                         {
 255                                 eDebug("[eDVBLocalTimerHandler] diff < 120 .. use Transponder Time");
 256                                 m_timeOffsetMap[chan->getChannelID()] = 0;
 257                                 new_diff = enigma_diff;
 258                         }
 259                         else if ( it != m_timeOffsetMap.end() ) // correction saved?
 260                         {
 261                                 eDebug("[eDVBLocalTimerHandler] we have correction %d", it->second);
 262                                 time_t CorrectedTpTime = tp_time+it->second;
 263                                 int ddiff = CorrectedTpTime-nowTime;
 264                                 eDebug("[eDVBLocalTimerHandler] diff after add correction is %d", ddiff);
 265                                 if ( abs(it->second) < 300 ) // stored correction < 5 min
 266                                 {
 267                                         eDebug("[eDVBLocalTimerHandler] use stored correction(<5 min)");
 268                                         new_diff = ddiff;
 269                                 }
 270                                 else if ( /*eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7020 &&  TODO !!!*/
 271                                                 getRTC() )
 272                                 {
 273                                         time_t rtc=getRTC();
 274                                         m_timeOffsetMap[chan->getChannelID()] = rtc-tp_time;
 275                                         new_diff = rtc-nowTime;  // set enigma time to rtc
 276                                         eDebug("[eDVBLocalTimerHandler] update stored correction to %d (calced against RTC time)", rtc-tp_time );
 277                                 }
 278                                 else if ( abs(ddiff) <= 120 )
 279                                 {
 280 // with stored correction calced time difference is lower 2 min
 281 // this don't help when a transponder have a clock running to slow or to fast
 282 // then its better to have a DM7020 with always running RTC
 283                                         eDebug("[eDVBLocalTimerHandler] use stored correction(corr < 2 min)");
 284                                         new_diff = ddiff;
 285                                 }
 286                                 else  // big change in calced correction.. hold current time and update correction
 287                                 {
 288                                         eDebug("[eDVBLocalTimerHandler] update stored correction to %d", -enigma_diff);
 289                                         m_timeOffsetMap[chan->getChannelID()] = -enigma_diff;
 290                                 }
 291                         }
 292                         else
 293                         {
 294                                 eDebug("[eDVBLocalTimerHandler] no correction found... store calced correction(%d)",-enigma_diff);
 295                                 m_timeOffsetMap[chan->getChannelID()] = -enigma_diff;
 296                         }
 297                 }
 298                 else  // no time setted yet
 299                 {
 300                         if ( it != m_timeOffsetMap.end() )
 301                         {
 302                                 enigma_diff += it->second;
 303                                 eDebug("[eDVBLocalTimerHandler] we have correction (%d)... use", it->second );
 304                         }
 305                         else
 306                                 eDebug("[eDVBLocalTimerHandler] dont have correction.. set Transponder Diff");
 307                         new_diff=enigma_diff;
 308                         m_time_ready=true;
 309                 }
 310
 311                 time_t t = nowTime+new_diff;
 312                 m_last_tp_time_difference=tp_time-t;
 313
 314                 if (!new_diff)
 315                 {
 316                         eDebug("[eDVBLocalTimerHandler] not changed");
 317                         return;
 318                 }
 319
 320                 tm now = *localtime(&t);
 321                 eDebug("[eDVBLocalTimerHandler] time update to %02d:%02d:%02d",
 322                         now.tm_hour,
 323                         now.tm_min,
 324                         now.tm_sec);
 325
 326                 m_time_difference = t - linuxTime;   // calc our new linux_time -> enigma_time correction
 327                 eDebug("[eDVBLocalTimerHandler] m_time_difference is %d", m_time_difference );
 328
 329 //              if ( eSystemInfo::getInstance()->getHwType() == eSystemInfo::DM7020 )  TODO !!
 330                         setRTC(t);
 331
 332                 if ( abs(m_time_difference) > 59 )
 333                 {
 334                         eDebug("[eDVBLocalTimerHandler] set Linux Time");
 335                         timeval tnow;
 336                         gettimeofday(&tnow,0);
 337                         tnow.tv_sec=t;
 338                         settimeofday(&tnow,0);
 339                         for (ePtrList<eMainloop>::iterator it(eMainloop::existing_loops)
 340                                 ;it != eMainloop::existing_loops.end(); ++it)
 341                                 it->setTimerOffset(m_time_difference);
 342                         m_time_difference=0;
 343                 }
 344
 345                  /*emit*/ m_timeUpdated();
 346         }
 347
 348         if ( restart_tdt )
 349         {
 350                 std::map<iDVBChannel*, TDT*>::iterator it =
 351                         m_active_tables.find(chan);
 352                 if ( it != m_active_tables.end() )
 353                 {
 354                         delete it->second;
 355                         it->second = new TDT(chan);
 356                         it->second->startTimer(60*60*1000);  // restart TDT for this transponder in 60min
 357                 }
 358         }
 359
 360 }
 361
 362 void eDVBLocalTimeHandler::DVBChannelAdded(eDVBChannel *chan)
 363 {
 364         eDebug("[eDVBLocalTimerHandler] add channel %p", chan);
 365         if ( chan )
 366         {
 367                 std::map<iDVBChannel*, TDT*>::iterator it =
 368                         m_active_tables.find(chan);
 369                 if ( it != m_active_tables.end() )
 370                 {
 371                         delete it->second;
 372                         it->second = new TDT(chan);
 373                 }
 374                 else
 375                         m_active_tables[chan] = new TDT(chan);
 376         }
 377 }
 378
 379 void eDVBLocalTimeHandler::DVBChannelRemoved(eDVBChannel *chan)
 380 {
 381         eDebug("[eDVBLocalTimerHandler] remove channel %p", chan);
 382         std::map<iDVBChannel*, TDT*>::iterator it =
 383                 m_active_tables.find(chan);
 384         if ( it != m_active_tables.end() )
 385         {
 386                 delete it->second;
 387                 m_active_tables.erase(it);
 388         }
 389 }
 390
 391 void eDVBLocalTimeHandler::DVBChannelRunning(iDVBChannel *chan)
 392 {
 393         eDebug("[eDVBLocalTimerHandler] start channel %p", chan);
 394         std::map<iDVBChannel*, TDT*>::iterator it =
 395                 m_active_tables.find(chan);
 396         if ( it != m_active_tables.end() )
 397                 it->second->start();
 398 }