lib/dvb/epgcache.cpp

   1 #include <lib/dvb/epgcache.h>
   2 #include <lib/dvb/dvb.h>
   3
   4 #undef EPG_DEBUG
   5
   6 #include <time.h>
   7 #include <unistd.h>  // for usleep
   8 #include <sys/vfs.h> // for statfs
   9 // #include <libmd5sum.h>
  10 #include <lib/base/eerror.h>
  11
  12 int eventData::CacheSize=0;
  13 descriptorMap eventData::descriptors;
  14 __u8 eventData::data[4108];
  15 extern const uint32_t crc32_table[256];
  16
  17 eventData::eventData(const eit_event_struct* e, int size, int type)
  18         :ByteSize(size&0xFF), type(type&0xFF)
  19 {
  20         if (!e)
  21                 return;
  22
  23         __u32 descr[65];
  24         __u32 *pdescr=descr;
  25
  26         __u8 *data = (__u8*)e;
  27         int ptr=10;
  28         int descriptors_length = (data[ptr++]&0x0F) << 8;
  29         descriptors_length |= data[ptr++];
  30         while ( descriptors_length > 0 )
  31         {
  32                 __u8 *descr = data+ptr;
  33                 int descr_len = descr[1]+2;
  34
  35                 __u32 crc = 0;
  36                 int cnt=0;
  37                 while(cnt++ < descr_len)
  38                         crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ data[ptr++]) & 0xFF];
  39
  40                 descriptorMap::iterator it =
  41                         descriptors.find(crc);
  42                 if ( it == descriptors.end() )
  43                 {
  44                         CacheSize+=descr_len;
  45                         __u8 *d = new __u8[descr_len];
  46                         memcpy(d, descr, descr_len);
  47                         descriptors[crc] = descriptorPair(1, d);
  48                 }
  49                 else
  50                         ++it->second.first;
  51
  52                 *pdescr++=crc;
  53                 descriptors_length -= descr_len;
  54         }
  55         ByteSize = 12+((pdescr-descr)*4);
  56         EITdata = new __u8[ByteSize];
  57         CacheSize+=ByteSize;
  58         memcpy(EITdata, (__u8*) e, 12);
  59         memcpy(EITdata+12, descr, ByteSize-12);
  60 }
  61
  62 const eit_event_struct* eventData::get() const
  63 {
  64         int pos = 12;
  65         int tmp = ByteSize-12;
  66
  67         memcpy(data, EITdata, 12);
  68         __u32 *p = (__u32*)(EITdata+12);
  69         while(tmp>0)
  70         {
  71                 descriptorMap::iterator it =
  72                         descriptors.find(*p++);
  73                 if ( it != descriptors.end() )
  74                 {
  75                         int b = it->second.second[1]+2;
  76                         memcpy(data+pos, it->second.second, b );
  77                         pos += b;
  78                 }
  79                 tmp-=4;
  80         }
  81
  82         return (const eit_event_struct*)data;
  83 }
  84
  85 eventData::~eventData()
  86 {
  87         if ( ByteSize )
  88         {
  89                 CacheSize-=ByteSize;
  90                 ByteSize-=12;
  91                 __u32 *d = (__u32*)(EITdata+12);
  92                 while(ByteSize)
  93                 {
  94                         descriptorMap::iterator it =
  95                                 descriptors.find(*d++);
  96                         if ( it != descriptors.end() )
  97                         {
  98                                 descriptorPair &p = it->second;
  99                                 if (!--p.first) // no more used descriptor
 100                                 {
 101                                         CacheSize -= it->second.second[1];
 102                                         delete [] it->second.second;    // free descriptor memory
 103                                         descriptors.erase(it);  // remove entry from descriptor map
 104                                 }
 105                         }
 106                         ByteSize-=4;
 107                 }
 108                 delete [] EITdata;
 109         }
 110 }
 111
 112 void eventData::load(FILE *f)
 113 {
 114         int size=0;
 115         int id=0;
 116         __u8 header[2];
 117         descriptorPair p;
 118         fread(&size, sizeof(int), 1, f);
 119         while(size)
 120         {
 121                 fread(&id, sizeof(__u32), 1, f);
 122                 fread(&p.first, sizeof(int), 1, f);
 123                 fread(header, 2, 1, f);
 124                 int bytes = header[1]+2;
 125                 p.second = new __u8[bytes];
 126                 p.second[0] = header[0];
 127                 p.second[1] = header[1];
 128                 fread(p.second+2, bytes-2, 1, f);
 129                 descriptors[id]=p;
 130                 --size;
 131                 CacheSize+=bytes;
 132         }
 133 }
 134
 135 void eventData::save(FILE *f)
 136 {
 137         int size=descriptors.size();
 138         descriptorMap::iterator it(descriptors.begin());
 139         fwrite(&size, sizeof(int), 1, f);
 140         while(size)
 141         {
 142                 fwrite(&it->first, sizeof(__u32), 1, f);
 143                 fwrite(&it->second.first, sizeof(int), 1, f);
 144                 fwrite(it->second.second, it->second.second[1]+2, 1, f);
 145                 ++it;
 146                 --size;
 147         }
 148 }
 149
 150 eEPGCache* eEPGCache::instance;
 151 pthread_mutex_t eEPGCache::cache_lock=
 152         PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
 153 pthread_mutex_t eEPGCache::channel_map_lock=
 154         PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
 155
 156 DEFINE_REF(eEPGCache)
 157
 158 eEPGCache::eEPGCache()
 159         :messages(this,1), cleanTimer(this)//, paused(0)
 160 {
 161         eDebug("[EPGC] Initialized EPGCache");
 162
 163         CONNECT(messages.recv_msg, eEPGCache::gotMessage);
 164         CONNECT(eDVBLocalTimeHandler::getInstance()->m_timeUpdated, eEPGCache::timeUpdated);
 165         CONNECT(cleanTimer.timeout, eEPGCache::cleanLoop);
 166
 167         ePtr<eDVBResourceManager> res_mgr;
 168         eDVBResourceManager::getInstance(res_mgr);
 169         if (!res_mgr)
 170                 eDebug("[eEPGCache] no resource manager !!!!!!!");
 171         else
 172                 res_mgr->connectChannelAdded(slot(*this,&eEPGCache::DVBChannelAdded), m_chanAddedConn);
 173         instance=this;
 174 }
 175
 176 void eEPGCache::timeUpdated()
 177 {
 178         if ( !thread_running() )
 179         {
 180                 eDebug("[EPGC] time updated.. start EPG Mainloop");
 181                 run();
 182         }
 183         else
 184                 messages.send(Message(Message::timeChanged));
 185 }
 186
 187 void eEPGCache::DVBChannelAdded(eDVBChannel *chan)
 188 {
 189         if ( chan )
 190         {
 191 //              eDebug("[eEPGCache] add channel %p", chan);
 192                 channel_data *data = new channel_data(this);
 193                 data->channel = chan;
 194                 singleLock s(channel_map_lock);
 195                 m_knownChannels.insert( std::pair<iDVBChannel*, channel_data* >(chan, data) );
 196                 chan->connectStateChange(slot(*this, &eEPGCache::DVBChannelStateChanged), data->m_stateChangedConn);
 197         }
 198 }
 199
 200 void eEPGCache::DVBChannelRunning(iDVBChannel *chan)
 201 {
 202         singleLock s(channel_map_lock);
 203         channelMapIterator it =
 204                 m_knownChannels.find(chan);
 205         if ( it == m_knownChannels.end() )
 206                 eDebug("[eEPGCache] will start non existing channel %p !!!", chan);
 207         else
 208         {
 209                 channel_data &data = *it->second;
 210                 ePtr<eDVBResourceManager> res_mgr;
 211                 if ( eDVBResourceManager::getInstance( res_mgr ) )
 212                         eDebug("[eEPGCache] no res manager!!");
 213                 else
 214                 {
 215                         ePtr<iDVBDemux> demux;
 216                         if ( data.channel->getDemux(demux, 0) )
 217                         {
 218                                 eDebug("[eEPGCache] no demux!!");
 219                                 return;
 220                         }
 221                         else
 222                         {
 223                                 RESULT res = demux->createSectionReader( this, data.m_NowNextReader );
 224                                 if ( res )
 225                                 {
 226                                         eDebug("[eEPGCache] couldnt initialize nownext reader!!");
 227                                         return;
 228                                 }
 229
 230                                 res = demux->createSectionReader( this, data.m_ScheduleReader );
 231                                 if ( res )
 232                                 {
 233                                         eDebug("[eEPGCache] couldnt initialize schedule reader!!");
 234                                         return;
 235                                 }
 236
 237                                 res = demux->createSectionReader( this, data.m_ScheduleOtherReader );
 238                                 if ( res )
 239                                 {
 240                                         eDebug("[eEPGCache] couldnt initialize schedule other reader!!");
 241                                         return;
 242                                 }
 243
 244                                 messages.send(Message(Message::startChannel, chan));
 245                                 // -> gotMessage -> changedService
 246                         }
 247                 }
 248         }
 249 }
 250
 251 void eEPGCache::DVBChannelStateChanged(iDVBChannel *chan)
 252 {
 253         channelMapIterator it =
 254                 m_knownChannels.find(chan);
 255         if ( it != m_knownChannels.end() )
 256         {
 257                 int state=0;
 258                 chan->getState(state);
 259                 switch (state)
 260                 {
 261                         case iDVBChannel::state_ok:
 262                         {
 263                                 eDebug("[eEPGCache] channel %p running", chan);
 264                                 DVBChannelRunning(chan);
 265                                 break;
 266                         }
 267                         case iDVBChannel::state_release:
 268                         {
 269                                 eDebug("[eEPGCache] remove channel %p", chan);
 270                                 messages.send(Message(Message::leaveChannel, chan));
 271                                 while(!it->second->can_delete)
 272                                         usleep(1000);
 273                                 delete it->second;
 274                                 m_knownChannels.erase(it);
 275                                 // -> gotMessage -> abortEPG
 276                                 break;
 277                         }
 278                 }
 279         }
 280 }
 281
 282 void eEPGCache::sectionRead(const __u8 *data, int source, channel_data *channel)
 283 {
 284         eit_t *eit = (eit_t*) data;
 285
 286         int len=HILO(eit->section_length)-1;//+3-4;
 287         int ptr=EIT_SIZE;
 288         if ( ptr >= len )
 289                 return;
 290
 291         // This fixed the EPG on the Multichoice irdeto systems
 292         // the EIT packet is non-compliant.. their EIT packet stinks
 293         if ( data[ptr-1] < 0x40 )
 294                 --ptr;
 295
 296         uniqueEPGKey service( HILO(eit->service_id), HILO(eit->original_network_id), HILO(eit->transport_stream_id) );
 297         eit_event_struct* eit_event = (eit_event_struct*) (data+ptr);
 298         int eit_event_size;
 299         int duration;
 300
 301         time_t TM = parseDVBtime( eit_event->start_time_1, eit_event->start_time_2,     eit_event->start_time_3, eit_event->start_time_4, eit_event->start_time_5);
 302         time_t now = time(0)+eDVBLocalTimeHandler::getInstance()->difference();
 303
 304         if ( TM != 3599 && TM > -1)
 305                 channel->haveData |= source;
 306
 307         singleLock s(cache_lock);
 308         // hier wird immer eine eventMap zurück gegeben.. entweder eine vorhandene..
 309         // oder eine durch [] erzeugte
 310         std::pair<eventMap,timeMap> &servicemap = eventDB[service];
 311         eventMap::iterator prevEventIt = servicemap.first.end();
 312         timeMap::iterator prevTimeIt = servicemap.second.end();
 313
 314         while (ptr<len)
 315         {
 316                 eit_event_size = HILO(eit_event->descriptors_loop_length)+EIT_LOOP_SIZE;
 317
 318                 duration = fromBCD(eit_event->duration_1)*3600+fromBCD(eit_event->duration_2)*60+fromBCD(eit_event->duration_3);
 319                 TM = parseDVBtime(
 320                         eit_event->start_time_1,
 321                         eit_event->start_time_2,
 322                         eit_event->start_time_3,
 323                         eit_event->start_time_4,
 324                         eit_event->start_time_5);
 325
 326                 if ( TM == 3599 )
 327                         goto next;
 328
 329                 if ( TM != 3599 && (TM+duration < now || TM > now+14*24*60*60) )
 330                         goto next;
 331
 332                 if ( now <= (TM+duration) || TM == 3599 /*NVOD Service*/ )  // old events should not be cached
 333                 {
 334                         __u16 event_id = HILO(eit_event->event_id);
 335 //                      eDebug("event_id is %d sid is %04x", event_id, service.sid);
 336
 337                         eventData *evt = 0;
 338                         int ev_erase_count = 0;
 339                         int tm_erase_count = 0;
 340
 341                         // search in eventmap
 342                         eventMap::iterator ev_it =
 343                                 servicemap.first.find(event_id);
 344
 345                         // entry with this event_id is already exist ?
 346                         if ( ev_it != servicemap.first.end() )
 347                         {
 348                                 if ( source > ev_it->second->type )  // update needed ?
 349                                         goto next; // when not.. the skip this entry
 350
 351                                 // search this event in timemap
 352                                 timeMap::iterator tm_it_tmp =
 353                                         servicemap.second.find(ev_it->second->getStartTime());
 354
 355                                 if ( tm_it_tmp != servicemap.second.end() )
 356                                 {
 357                                         if ( tm_it_tmp->first == TM ) // correct eventData
 358                                         {
 359                                                 // exempt memory
 360                                                 delete ev_it->second;
 361                                                 evt = new eventData(eit_event, eit_event_size, source);
 362                                                 ev_it->second=evt;
 363                                                 tm_it_tmp->second=evt;
 364                                                 goto next;
 365                                         }
 366                                         else
 367                                         {
 368                                                 tm_erase_count++;
 369                                                 // delete the found record from timemap
 370                                                 servicemap.second.erase(tm_it_tmp);
 371                                                 prevTimeIt=servicemap.second.end();
 372                                         }
 373                                 }
 374                         }
 375
 376                         // search in timemap, for check of a case if new time has coincided with time of other event
 377                         // or event was is not found in eventmap
 378                         timeMap::iterator tm_it =
 379                                 servicemap.second.find(TM);
 380
 381                         if ( tm_it != servicemap.second.end() )
 382                         {
 383                                 // i think, if event is not found on eventmap, but found on timemap updating nevertheless demands
 384 #if 0
 385                                 if ( source > tm_it->second->type && tm_erase_count == 0 ) // update needed ?
 386                                         goto next; // when not.. the skip this entry
 387 #endif
 388
 389                                 // search this time in eventmap
 390                                 eventMap::iterator ev_it_tmp =
 391                                         servicemap.first.find(tm_it->second->getEventID());
 392
 393                                 if ( ev_it_tmp != servicemap.first.end() )
 394                                 {
 395                                         ev_erase_count++;
 396                                         // delete the found record from eventmap
 397                                         servicemap.first.erase(ev_it_tmp);
 398                                         prevEventIt=servicemap.first.end();
 399                                 }
 400                         }
 401
 402                         evt = new eventData(eit_event, eit_event_size, source);
 403 #if EPG_DEBUG
 404                         bool consistencyCheck=true;
 405 #endif
 406                         if (ev_erase_count > 0 && tm_erase_count > 0) // 2 different pairs have been removed
 407                         {
 408                                 // exempt memory
 409                                 delete ev_it->second;
 410                                 delete tm_it->second;
 411                                 ev_it->second=evt;
 412                                 tm_it->second=evt;
 413                         }
 414                         else if (ev_erase_count == 0 && tm_erase_count > 0)
 415                         {
 416                                 // exempt memory
 417                                 delete ev_it->second;
 418                                 tm_it=prevTimeIt=servicemap.second.insert( prevTimeIt, std::pair<const time_t, eventData*>( TM, evt ) );
 419                                 ev_it->second=evt;
 420                         }
 421                         else if (ev_erase_count > 0 && tm_erase_count == 0)
 422                         {
 423                                 // exempt memory
 424                                 delete tm_it->second;
 425                                 ev_it=prevEventIt=servicemap.first.insert( prevEventIt, std::pair<const __u16, eventData*>( event_id, evt) );
 426                                 tm_it->second=evt;
 427                         }
 428                         else // added new eventData
 429                         {
 430 #if EPG_DEBUG
 431                                 consistencyCheck=false;
 432 #endif
 433                                 prevEventIt=servicemap.first.insert( prevEventIt, std::pair<const __u16, eventData*>( event_id, evt) );
 434                                 prevTimeIt=servicemap.second.insert( prevTimeIt, std::pair<const time_t, eventData*>( TM, evt ) );
 435                         }
 436 #if EPG_DEBUG
 437                         if ( consistencyCheck )
 438                         {
 439                                 if ( tm_it->second != evt || ev_it->second != evt )
 440                                         eFatal("tm_it->second != ev_it->second");
 441                                 else if ( tm_it->second->getStartTime() != tm_it->first )
 442                                         eFatal("event start_time(%d) non equal timemap key(%d)",
 443                                                 tm_it->second->getStartTime(), tm_it->first );
 444                                 else if ( tm_it->first != TM )
 445                                         eFatal("timemap key(%d) non equal TM(%d)",
 446                                                 tm_it->first, TM);
 447                                 else if ( ev_it->second->getEventID() != ev_it->first )
 448                                         eFatal("event_id (%d) non equal event_map key(%d)",
 449                                                 ev_it->second->getEventID(), ev_it->first);
 450                                 else if ( ev_it->first != event_id )
 451                                         eFatal("eventmap key(%d) non equal event_id(%d)",
 452                                                 ev_it->first, event_id );
 453                         }
 454 #endif
 455                 }
 456 next:
 457 #if EPG_DEBUG
 458                 if ( servicemap.first.size() != servicemap.second.size() )
 459                 {
 460                         FILE *f = fopen("/hdd/event_map.txt", "w+");
 461                         int i=0;
 462                         for (eventMap::iterator it(servicemap.first.begin())
 463                                 ; it != servicemap.first.end(); ++it )
 464                                 fprintf(f, "%d(key %d) -> time %d, event_id %d, data %p\n",
 465                                         i++, (int)it->first, (int)it->second->getStartTime(), (int)it->second->getEventID(), it->second );
 466                         fclose(f);
 467                         f = fopen("/hdd/time_map.txt", "w+");
 468                         i=0;
 469                         for (timeMap::iterator it(servicemap.second.begin())
 470                                 ; it != servicemap.second.end(); ++it )
 471                                         fprintf(f, "%d(key %d) -> time %d, event_id %d, data %p\n",
 472                                                 i++, (int)it->first, (int)it->second->getStartTime(), (int)it->second->getEventID(), it->second );
 473                         fclose(f);
 474
 475                         eFatal("(1)map sizes not equal :( sid %04x tsid %04x onid %04x size %d size2 %d",
 476                                 service.sid, service.tsid, service.onid,
 477                                 servicemap.first.size(), servicemap.second.size() );
 478                 }
 479 #endif
 480                 ptr += eit_event_size;
 481                 eit_event=(eit_event_struct*)(((__u8*)eit_event)+eit_event_size);
 482         }
 483 }
 484
 485 void eEPGCache::flushEPG(const uniqueEPGKey & s)
 486 {
 487         eDebug("[EPGC] flushEPG %d", (int)(bool)s);
 488         singleLock l(cache_lock);
 489         if (s)  // clear only this service
 490         {
 491                 eventCache::iterator it = eventDB.find(s);
 492                 if ( it != eventDB.end() )
 493                 {
 494                         eventMap &evMap = it->second.first;
 495                         timeMap &tmMap = it->second.second;
 496                         tmMap.clear();
 497                         for (eventMap::iterator i = evMap.begin(); i != evMap.end(); ++i)
 498                                 delete i->second;
 499                         evMap.clear();
 500                         eventDB.erase(it);
 501
 502                         // TODO .. search corresponding channel for removed service and remove this channel from lastupdated map
 503                 }
 504         }
 505         else // clear complete EPG Cache
 506         {
 507                 for (eventCache::iterator it(eventDB.begin());
 508                         it != eventDB.end(); ++it)
 509                 {
 510                         eventMap &evMap = it->second.first;
 511                         timeMap &tmMap = it->second.second;
 512                         for (eventMap::iterator i = evMap.begin(); i != evMap.end(); ++i)
 513                                 delete i->second;
 514                         evMap.clear();
 515                         tmMap.clear();
 516                 }
 517                 eventDB.clear();
 518                 channelLastUpdated.clear();
 519                 singleLock m(channel_map_lock);
 520                 for (channelMapIterator it(m_knownChannels.begin()); it != m_knownChannels.end(); ++it)
 521                         it->second->startEPG();
 522         }
 523         eDebug("[EPGC] %i bytes for cache used", eventData::CacheSize);
 524 }
 525
 526 void eEPGCache::cleanLoop()
 527 {
 528         singleLock s(cache_lock);
 529         if (!eventDB.empty())
 530         {
 531                 eDebug("[EPGC] start cleanloop");
 532
 533                 time_t now = time(0)+eDVBLocalTimeHandler::getInstance()->difference();
 534
 535                 for (eventCache::iterator DBIt = eventDB.begin(); DBIt != eventDB.end(); DBIt++)
 536                 {
 537                         for (timeMap::iterator It = DBIt->second.second.begin(); It != DBIt->second.second.end() && It->first < now;)
 538                         {
 539                                 if ( now > (It->first+It->second->getDuration()) )  // outdated normal entry (nvod references to)
 540                                 {
 541                                         // remove entry from eventMap
 542                                         eventMap::iterator b(DBIt->second.first.find(It->second->getEventID()));
 543                                         if ( b != DBIt->second.first.end() )
 544                                         {
 545                                                 // release Heap Memory for this entry   (new ....)
 546 //                                              eDebug("[EPGC] delete old event (evmap)");
 547                                                 DBIt->second.first.erase(b);
 548                                         }
 549
 550                                         // remove entry from timeMap
 551 //                                      eDebug("[EPGC] release heap mem");
 552                                         delete It->second;
 553                                         DBIt->second.second.erase(It++);
 554 //                                      eDebug("[EPGC] delete old event (timeMap)");
 555                                 }
 556                                 else
 557                                         ++It;
 558                         }
 559                 }
 560                 eDebug("[EPGC] stop cleanloop");
 561                 eDebug("[EPGC] %i bytes for cache used", eventData::CacheSize);
 562         }
 563         cleanTimer.start(CLEAN_INTERVAL,true);
 564 }
 565
 566 eEPGCache::~eEPGCache()
 567 {
 568         messages.send(Message::quit);
 569         kill(); // waiting for thread shutdown
 570         singleLock s(cache_lock);
 571         for (eventCache::iterator evIt = eventDB.begin(); evIt != eventDB.end(); evIt++)
 572                 for (eventMap::iterator It = evIt->second.first.begin(); It != evIt->second.first.end(); It++)
 573                         delete It->second;
 574 }
 575
 576 void eEPGCache::gotMessage( const Message &msg )
 577 {
 578         switch (msg.type)
 579         {
 580                 case Message::flush:
 581                         flushEPG(msg.service);
 582                         break;
 583                 case Message::startChannel:
 584                 {
 585                         singleLock s(channel_map_lock);
 586                         channelMapIterator channel =
 587                                 m_knownChannels.find(msg.channel);
 588                         if ( channel != m_knownChannels.end() )
 589                                 channel->second->startChannel();
 590                         break;
 591                 }
 592                 case Message::leaveChannel:
 593                 {
 594                         singleLock s(channel_map_lock);
 595                         channelMapIterator channel =
 596                                 m_knownChannels.find(msg.channel);
 597                         if ( channel != m_knownChannels.end() )
 598                                 channel->second->abortEPG();
 599                         break;
 600                 }
 601                 case Message::quit:
 602                         quit(0);
 603                         break;
 604                 case Message::timeChanged:
 605                         cleanLoop();
 606                         break;
 607                 default:
 608                         eDebug("unhandled EPGCache Message!!");
 609                         break;
 610         }
 611 }
 612
 613 void eEPGCache::thread()
 614 {
 615         nice(4);
 616         load();
 617         cleanLoop();
 618         exec();
 619         save();
 620 }
 621
 622 void eEPGCache::load()
 623 {
 624 #if 0
 625         FILE *f = fopen("/hdd/epg.dat", "r");
 626         if (f)
 627         {
 628                 unsigned char md5_saved[16];
 629                 unsigned char md5[16];
 630                 int size=0;
 631                 int cnt=0;
 632                 bool md5ok=false;
 633                 if (!md5_file("/hdd/epg.dat", 1, md5))
 634                 {
 635                         FILE *f = fopen("/hdd/epg.dat.md5", "r");
 636                         if (f)
 637                         {
 638                                 fread( md5_saved, 16, 1, f);
 639                                 fclose(f);
 640                                 if ( !memcmp(md5_saved, md5, 16) )
 641                                         md5ok=true;
 642                         }
 643                 }
 644                 if ( md5ok )
 645                 {
 646                         char text1[13];
 647                         fread( text1, 13, 1, f);
 648                         if ( !strncmp( text1, "ENIGMA_EPG_V4", 13) )
 649                         {
 650                                 fread( &size, sizeof(int), 1, f);
 651                                 while(size--)
 652                                 {
 653                                         uniqueEPGKey key;
 654                                         eventMap evMap;
 655                                         timeMap tmMap;
 656                                         int size=0;
 657                                         fread( &key, sizeof(uniqueEPGKey), 1, f);
 658                                         fread( &size, sizeof(int), 1, f);
 659                                         while(size--)
 660                                         {
 661                                                 __u8 len=0;
 662                                                 __u8 type=0;
 663                                                 eventData *event=0;
 664                                                 fread( &type, sizeof(__u8), 1, f);
 665                                                 fread( &len, sizeof(__u8), 1, f);
 666                                                 event = new eventData(0, len, type);
 667                                                 event->EITdata = new __u8[len];
 668                                                 eventData::CacheSize+=len;
 669                                                 fread( event->EITdata, len, 1, f);
 670                                                 evMap[ event->getEventID() ]=event;
 671                                                 tmMap[ event->getStartTime() ]=event;
 672                                                 ++cnt;
 673                                         }
 674                                         eventDB[key]=std::pair<eventMap,timeMap>(evMap,tmMap);
 675                                 }
 676                                 eventData::load(f);
 677                                 eDebug("%d events read from /hdd/epg.dat", cnt);
 678                         }
 679                         else
 680                                 eDebug("[EPGC] don't read old epg database");
 681                         fclose(f);
 682                 }
 683         }
 684 #endif
 685 }
 686
 687 void eEPGCache::save()
 688 {
 689 #if 0
 690         struct statfs s;
 691         off64_t tmp;
 692         if (statfs("/hdd", &s)<0)
 693                 tmp=0;
 694         else
 695         {
 696                 tmp=s.f_blocks;
 697                 tmp*=s.f_bsize;
 698         }
 699
 700         // prevent writes to builtin flash
 701         if ( tmp < 1024*1024*50 ) // storage size < 50MB
 702                 return;
 703
 704         // check for enough free space on storage
 705         tmp=s.f_bfree;
 706         tmp*=s.f_bsize;
 707         if ( tmp < (eventData::CacheSize*12)/10 ) // 20% overhead
 708                 return;
 709
 710         FILE *f = fopen("/hdd/epg.dat", "w");
 711         int cnt=0;
 712         if ( f )
 713         {
 714                 const char *text = "ENIGMA_EPG_V4";
 715                 fwrite( text, 13, 1, f );
 716                 int size = eventDB.size();
 717                 fwrite( &size, sizeof(int), 1, f );
 718                 for (eventCache::iterator service_it(eventDB.begin()); service_it != eventDB.end(); ++service_it)
 719                 {
 720                         timeMap &timemap = service_it->second.second;
 721                         fwrite( &service_it->first, sizeof(uniqueEPGKey), 1, f);
 722                         size = timemap.size();
 723                         fwrite( &size, sizeof(int), 1, f);
 724                         for (timeMap::iterator time_it(timemap.begin()); time_it != timemap.end(); ++time_it)
 725                         {
 726                                 __u8 len = time_it->second->ByteSize;
 727                                 fwrite( &time_it->second->type, sizeof(__u8), 1, f );
 728                                 fwrite( &len, sizeof(__u8), 1, f);
 729                                 fwrite( time_it->second->EITdata, len, 1, f);
 730                                 ++cnt;
 731                         }
 732                 }
 733                 eDebug("%d events written to /hdd/epg.dat", cnt);
 734                 eventData::save(f);
 735                 fclose(f);
 736                 unsigned char md5[16];
 737                 if (!md5_file("/hdd/epg.dat", 1, md5))
 738                 {
 739                         FILE *f = fopen("/hdd/epg.dat.md5", "w");
 740                         if (f)
 741                         {
 742                                 fwrite( md5, 16, 1, f);
 743                                 fclose(f);
 744                         }
 745                 }
 746         }
 747 #endif
 748 }
 749
 750 eEPGCache::channel_data::channel_data(eEPGCache *ml)
 751         :cache(ml)
 752         ,abortTimer(ml), zapTimer(ml)
 753         ,state(0), isRunning(0), haveData(0), can_delete(1)
 754 {
 755         CONNECT(zapTimer.timeout, eEPGCache::channel_data::startEPG);
 756         CONNECT(abortTimer.timeout, eEPGCache::channel_data::abortNonAvail);
 757 }
 758
 759 bool eEPGCache::channel_data::finishEPG()
 760 {
 761         if (!isRunning)  // epg ready
 762         {
 763                 eDebug("[EPGC] stop caching events(%d)", time(0)+eDVBLocalTimeHandler::getInstance()->difference());
 764                 zapTimer.start(UPDATE_INTERVAL, 1);
 765                 eDebug("[EPGC] next update in %i min", UPDATE_INTERVAL / 60000);
 766                 for (int i=0; i < 3; ++i)
 767                 {
 768                         seenSections[i].clear();
 769                         calcedSections[i].clear();
 770                 }
 771                 singleLock l(cache->cache_lock);
 772                 cache->channelLastUpdated[channel->getChannelID()] = time(0)+eDVBLocalTimeHandler::getInstance()->difference();
 773                 can_delete=1;
 774                 return true;
 775         }
 776         return false;
 777 }
 778
 779 void eEPGCache::channel_data::startEPG()
 780 {
 781         eDebug("[EPGC] start caching events(%d)", eDVBLocalTimeHandler::getInstance()->difference()+time(0));
 782         state=0;
 783         haveData=0;
 784         can_delete=0;
 785         for (int i=0; i < 3; ++i)
 786         {
 787                 seenSections[i].clear();
 788                 calcedSections[i].clear();
 789         }
 790
 791         eDVBSectionFilterMask mask;
 792         memset(&mask, 0, sizeof(mask));
 793         mask.pid = 0x12;
 794         mask.flags = eDVBSectionFilterMask::rfCRC;
 795
 796         mask.data[0] = 0x4E;
 797         mask.mask[0] = 0xFE;
 798         m_NowNextReader->connectRead(slot(*this, &eEPGCache::channel_data::readData), m_NowNextConn);
 799         m_NowNextReader->start(mask);
 800         isRunning |= NOWNEXT;
 801
 802         mask.data[0] = 0x50;
 803         mask.mask[0] = 0xF0;
 804         m_ScheduleReader->connectRead(slot(*this, &eEPGCache::channel_data::readData), m_ScheduleConn);
 805         m_ScheduleReader->start(mask);
 806         isRunning |= SCHEDULE;
 807
 808         mask.data[0] = 0x60;
 809         mask.mask[0] = 0xF0;
 810         m_ScheduleOtherReader->connectRead(slot(*this, &eEPGCache::channel_data::readData), m_ScheduleOtherConn);
 811         m_ScheduleOtherReader->start(mask);
 812         isRunning |= SCHEDULE_OTHER;
 813
 814         abortTimer.start(7000,true);
 815 }
 816
 817 void eEPGCache::channel_data::abortNonAvail()
 818 {
 819         if (!state)
 820         {
 821                 if ( !(haveData&eEPGCache::NOWNEXT) && (isRunning&eEPGCache::NOWNEXT) )
 822                 {
 823                         eDebug("[EPGC] abort non avail nownext reading");
 824                         isRunning &= ~eEPGCache::NOWNEXT;
 825                         m_NowNextReader->stop();
 826                         m_NowNextConn=0;
 827                 }
 828                 if ( !(haveData&eEPGCache::SCHEDULE) && (isRunning&eEPGCache::SCHEDULE) )
 829                 {
 830                         eDebug("[EPGC] abort non avail schedule reading");
 831                         isRunning &= ~SCHEDULE;
 832                         m_ScheduleReader->stop();
 833                         m_ScheduleConn=0;
 834                 }
 835                 if ( !(haveData&eEPGCache::SCHEDULE_OTHER) && (isRunning&eEPGCache::SCHEDULE_OTHER) )
 836                 {
 837                         eDebug("[EPGC] abort non avail schedule_other reading");
 838                         isRunning &= ~SCHEDULE_OTHER;
 839                         m_ScheduleOtherReader->stop();
 840                         m_ScheduleOtherConn=0;
 841                 }
 842                 if ( isRunning )
 843                         abortTimer.start(90000, true);
 844                 else
 845                 {
 846                         ++state;
 847                         for (int i=0; i < 3; ++i)
 848                         {
 849                                 seenSections[i].clear();
 850                                 calcedSections[i].clear();
 851                         }
 852                         can_delete=1;
 853                 }
 854         }
 855         ++state;
 856 }
 857
 858 void eEPGCache::channel_data::startChannel()
 859 {
 860         updateMap::iterator It = cache->channelLastUpdated.find( channel->getChannelID() );
 861
 862         int update = ( It != cache->channelLastUpdated.end() ? ( UPDATE_INTERVAL - ( (time(0)+eDVBLocalTimeHandler::getInstance()->difference()-It->second) * 1000 ) ) : ZAP_DELAY );
 863
 864         if (update < ZAP_DELAY)
 865                 update = ZAP_DELAY;
 866
 867         zapTimer.start(update, 1);
 868         if (update >= 60000)
 869                 eDebug("[EPGC] next update in %i min", update/60000);
 870         else if (update >= 1000)
 871                 eDebug("[EPGC] next update in %i sec", update/1000);
 872 }
 873
 874 void eEPGCache::channel_data::abortEPG()
 875 {
 876         for (int i=0; i < 3; ++i)
 877         {
 878                 seenSections[i].clear();
 879                 calcedSections[i].clear();
 880         }
 881         abortTimer.stop();
 882         zapTimer.stop();
 883         if (isRunning)
 884         {
 885                 eDebug("[EPGC] abort caching events !!");
 886                 if (isRunning & eEPGCache::SCHEDULE)
 887                 {
 888                         isRunning &= ~eEPGCache::SCHEDULE;
 889                         m_ScheduleReader->stop();
 890                         m_ScheduleConn=0;
 891                 }
 892                 if (isRunning & eEPGCache::NOWNEXT)
 893                 {
 894                         isRunning &= ~eEPGCache::NOWNEXT;
 895                         m_NowNextReader->stop();
 896                         m_NowNextConn=0;
 897                 }
 898                 if (isRunning & SCHEDULE_OTHER)
 899                 {
 900                         isRunning &= ~eEPGCache::SCHEDULE_OTHER;
 901                         m_ScheduleOtherReader->stop();
 902                         m_ScheduleOtherConn=0;
 903                 }
 904                 can_delete=1;
 905         }
 906 }
 907
 908 void eEPGCache::channel_data::readData( const __u8 *data)
 909 {
 910         if (!data)
 911                 eDebug("get Null pointer from section reader !!");
 912         else
 913         {
 914                 int source;
 915                 int map;
 916                 iDVBSectionReader *reader=NULL;
 917                 switch(data[0])
 918                 {
 919                         case 0x4E ... 0x4F:
 920                                 reader=m_NowNextReader;
 921                                 source=eEPGCache::NOWNEXT;
 922                                 map=0;
 923                                 break;
 924                         case 0x50 ... 0x5F:
 925                                 reader=m_ScheduleReader;
 926                                 source=eEPGCache::SCHEDULE;
 927                                 map=1;
 928                                 break;
 929                         case 0x60 ... 0x6F:
 930                                 reader=m_ScheduleOtherReader;
 931                                 source=eEPGCache::SCHEDULE_OTHER;
 932                                 map=2;
 933                                 break;
 934                         default:
 935                                 eDebug("[EPGC] unknown table_id !!!");
 936                                 return;
 937                 }
 938                 tidMap &seenSections = this->seenSections[map];
 939                 tidMap &calcedSections = this->calcedSections[map];
 940                 if ( state == 1 && calcedSections == seenSections || state > 1 )
 941                 {
 942                         eDebugNoNewLine("[EPGC] ");
 943                         switch (source)
 944                         {
 945                                 case eEPGCache::NOWNEXT:
 946                                         m_NowNextConn=0;
 947                                         eDebugNoNewLine("nownext");
 948                                         break;
 949                                 case eEPGCache::SCHEDULE:
 950                                         m_ScheduleConn=0;
 951                                         eDebugNoNewLine("schedule");
 952                                         break;
 953                                 case eEPGCache::SCHEDULE_OTHER:
 954                                         m_ScheduleOtherConn=0;
 955                                         eDebugNoNewLine("schedule other");
 956                                         break;
 957                                 default: eDebugNoNewLine("unknown");break;
 958                         }
 959                         eDebug(" finished(%d)", time(0)+eDVBLocalTimeHandler::getInstance()->difference());
 960                         if ( reader )
 961                                 reader->stop();
 962                         isRunning &= ~source;
 963                         if (!isRunning)
 964                                 finishEPG();
 965                 }
 966                 else
 967                 {
 968                         eit_t *eit = (eit_t*) data;
 969                         __u32 sectionNo = data[0] << 24;
 970                         sectionNo |= data[3] << 16;
 971                         sectionNo |= data[4] << 8;
 972                         sectionNo |= eit->section_number;
 973
 974                         tidMap::iterator it =
 975                                 seenSections.find(sectionNo);
 976
 977                         if ( it == seenSections.end() )
 978                         {
 979                                 seenSections.insert(sectionNo);
 980                                 calcedSections.insert(sectionNo);
 981                                 __u32 tmpval = sectionNo & 0xFFFFFF00;
 982                                 __u8 incr = source == NOWNEXT ? 1 : 8;
 983                                 for ( int i = 0; i <= eit->last_section_number; i+=incr )
 984                                 {
 985                                         if ( i == eit->section_number )
 986                                         {
 987                                                 for (int x=i; x <= eit->segment_last_section_number; ++x)
 988                                                         calcedSections.insert(tmpval|(x&0xFF));
 989                                         }
 990                                         else
 991                                                 calcedSections.insert(tmpval|(i&0xFF));
 992                                 }
 993                                 cache->sectionRead(data, source, this);
 994                         }
 995                 }
 996         }
 997 }
 998
 999 RESULT eEPGCache::lookupEventTime(const eServiceReference &service, time_t t, const eventData *&result )
1000 // if t == 0 we search the current event...
1001 {
1002         singleLock s(cache_lock);
1003         uniqueEPGKey key(service);
1004
1005         // check if EPG for this service is ready...
1006         eventCache::iterator It = eventDB.find( key );
1007         if ( It != eventDB.end() && !It->second.first.empty() ) // entrys cached ?
1008         {
1009                 if (!t)
1010                         t = time(0)+eDVBLocalTimeHandler::getInstance()->difference();
1011
1012 // TODO: optimize this.. why we here search first in timemap.. and then in eventmap??
1013                 timeMap::iterator i = It->second.second.lower_bound(t);
1014                 if ( i != It->second.second.end() )
1015                 {
1016                         if ( i != It->second.second.end() )
1017                         {
1018                                 if ( t <= i->first+i->second->getDuration() )
1019                                 {
1020                                         result = i->second;
1021                                         return 0;
1022                                 }
1023                         }
1024                 }
1025
1026                 for ( eventMap::iterator i( It->second.first.begin() ); i != It->second.first.end(); i++)
1027                 {
1028                         int duration = i->second->getDuration();
1029                         time_t begTime = i->second->getStartTime();
1030                         if ( t >= begTime && t <= begTime+duration) // then we have found
1031                         {
1032                                 result = i->second;
1033                                 return 0;
1034                         }
1035                 }
1036         }
1037         return -1;
1038 }
1039
1040 RESULT eEPGCache::lookupEventTime(const eServiceReference &service, time_t t, const eit_event_struct *&result )
1041 {
1042         singleLock s(cache_lock);
1043         const eventData *data=0;
1044         RESULT ret = lookupEventTime(service, t, data);
1045         if ( !ret && data )
1046                 result = data->get();
1047         return ret;
1048 }
1049
1050 RESULT eEPGCache::lookupEventTime(const eServiceReference &service, time_t t, Event *& result )
1051 {
1052         singleLock s(cache_lock);
1053         const eventData *data=0;
1054         RESULT ret = lookupEventTime(service, t, data);
1055         if ( !ret && data )
1056                 result = new Event((uint8_t*)data->get());
1057         return ret;
1058 }
1059
1060 RESULT eEPGCache::lookupEventTime(const eServiceReference &service, time_t t, ePtr<eServiceEvent> &result )
1061 {
1062         singleLock s(cache_lock);
1063         const eventData *data=0;
1064         RESULT ret = lookupEventTime(service, t, data);
1065         if ( !ret && data )
1066         {
1067                 Event ev((uint8_t*)data->get());
1068                 result = new eServiceEvent();
1069                 ret = result->parseFrom(&ev);
1070         }
1071         return ret;
1072 }
1073
1074 RESULT eEPGCache::lookupEventId(const eServiceReference &service, int event_id, const eventData *&result )
1075 {
1076         singleLock s(cache_lock);
1077         uniqueEPGKey key( service );
1078
1079         eventCache::iterator It = eventDB.find( key );
1080         if ( It != eventDB.end() && !It->second.first.empty() ) // entrys cached?
1081         {
1082                 eventMap::iterator i( It->second.first.find( event_id ));
1083                 if ( i != It->second.first.end() )
1084                 {
1085                         result = i->second;
1086                         return 0;
1087                 }
1088                 else
1089                 {
1090                         result = 0;
1091                         eDebug("event %04x not found in epgcache", event_id);
1092                 }
1093         }
1094         return -1;
1095 }
1096
1097 RESULT eEPGCache::lookupEventId(const eServiceReference &service, int event_id, const eit_event_struct *&result)
1098 {
1099         singleLock s(cache_lock);
1100         const eventData *data=0;
1101         RESULT ret = lookupEventId(service, event_id, data);
1102         if ( !ret && data )
1103                 result = data->get();
1104         return ret;
1105 }
1106
1107 RESULT eEPGCache::lookupEventId(const eServiceReference &service, int event_id, Event *& result)
1108 {
1109         singleLock s(cache_lock);
1110         const eventData *data=0;
1111         RESULT ret = lookupEventId(service, event_id, data);
1112         if ( !ret && data )
1113                 result = new Event((uint8_t*)data->get());
1114         return ret;
1115 }
1116
1117 RESULT eEPGCache::lookupEventId(const eServiceReference &service, int event_id, ePtr<eServiceEvent> &result)
1118 {
1119         singleLock s(cache_lock);
1120         const eventData *data=0;
1121         RESULT ret = lookupEventId(service, event_id, data);
1122         if ( !ret && data )
1123         {
1124                 Event ev((uint8_t*)data->get());
1125                 result = new eServiceEvent();
1126                 ret = result->parseFrom(&ev);
1127         }
1128         return ret;
1129 }
1130
1131 RESULT eEPGCache::startTimeQuery(const eServiceReference &service, time_t begin, int minutes)
1132 {
1133         eventCache::iterator It = eventDB.find( service );
1134         if ( It != eventDB.end() && It->second.second.size() )
1135         {
1136                 m_timemap_end = minutes != -1 ? It->second.second.upper_bound(begin+minutes*60) : It->second.second.end();
1137                 if ( begin != -1 )
1138                 {
1139                         m_timemap_cursor = It->second.second.lower_bound(begin);
1140                         if ( m_timemap_cursor != It->second.second.end() && m_timemap_cursor != It->second.second.begin() )
1141                         {
1142                                 timeMap::iterator it = m_timemap_cursor;
1143                                 --it;
1144                                 if ( (it->second->getStartTime() + it->second->getDuration()) > begin )
1145                                         m_timemap_cursor = it;
1146                         }
1147                 }
1148                 else
1149                         m_timemap_cursor = It->second.second.begin();
1150                 return 0;
1151         }
1152         return -1;
1153 }
1154
1155 RESULT eEPGCache::getNextTimeEntry(const eventData *& result)
1156 {
1157         if ( m_timemap_cursor != m_timemap_end )
1158         {
1159                 result = m_timemap_cursor++->second;
1160                 return 0;
1161         }
1162         return -1;
1163 }
1164
1165 RESULT eEPGCache::getNextTimeEntry(const eit_event_struct *&result)
1166 {
1167         if ( m_timemap_cursor != m_timemap_end )
1168         {
1169                 result = m_timemap_cursor++->second->get();
1170                 return 0;
1171         }
1172         return -1;
1173 }
1174
1175 RESULT eEPGCache::getNextTimeEntry(Event *&result)
1176 {
1177         if ( m_timemap_cursor != m_timemap_end )
1178         {
1179                 result = new Event((uint8_t*)m_timemap_cursor++->second->get());
1180                 return 0;
1181         }
1182         return -1;
1183 }
1184
1185 RESULT eEPGCache::getNextTimeEntry(ePtr<eServiceEvent> &result)
1186 {
1187         if ( m_timemap_cursor != m_timemap_end )
1188         {
1189                 Event ev((uint8_t*)m_timemap_cursor++->second->get());
1190                 result = new eServiceEvent();
1191                 return result->parseFrom(&ev);
1192         }
1193         return -1;
1194 }