lib/dvb/pmt.cpp

   1 #include <lib/base/eerror.h>
   2 #include <lib/dvb/pmt.h>
   3 #include <lib/dvb/specs.h>
   4 #include <lib/dvb/dvb.h>
   5 #include <lib/dvb/metaparser.h>
   6 #include <lib/dvb_ci/dvbci.h>
   7 #include <dvbsi++/ca_program_map_section.h>
   8 #include <dvbsi++/descriptor_tag.h>
   9 #include <dvbsi++/iso639_language_descriptor.h>
  10 #include <dvbsi++/component_descriptor.h>
  11
  12 eDVBServicePMTHandler::eDVBServicePMTHandler(int record)
  13         :m_ca_servicePtr(0)
  14 {
  15         m_record = record;
  16         eDVBResourceManager::getInstance(m_resourceManager);
  17         CONNECT(m_PMT.tableReady, eDVBServicePMTHandler::PMTready);
  18         CONNECT(m_PAT.tableReady, eDVBServicePMTHandler::PATready);
  19         eDebug("new PMT handler record: %d", m_record);
  20 }
  21
  22 eDVBServicePMTHandler::~eDVBServicePMTHandler()
  23 {
  24         eDebug("delete PMT handler record: %d", m_record);
  25         if (m_ca_servicePtr)
  26         {
  27                 eDebug("unregister caservice");
  28                 uint8_t demux_num;
  29                 m_demux->getCADemuxID(demux_num);
  30                 ePtr<eTable<ProgramMapSection> > ptr;
  31                 m_PMT.getCurrent(ptr);
  32                 eDVBCAService::unregister_service(m_reference, demux_num, ptr);
  33                 eDVBCIInterfaces::getInstance()->removePMTHandler(this);
  34         }
  35 }
  36
  37 void eDVBServicePMTHandler::channelStateChanged(iDVBChannel *channel)
  38 {
  39         int state;
  40         channel->getState(state);
  41
  42         if ((m_last_channel_state != iDVBChannel::state_ok)
  43                 && (state == iDVBChannel::state_ok) && (!m_demux))
  44         {
  45                 if (m_channel)
  46                         if (m_channel->getDemux(m_demux, m_record ? 0 : iDVBChannel::capDecode))
  47                                 eDebug("Allocating a demux for now tuned-in channel failed.");
  48
  49                 serviceEvent(eventTuned);
  50
  51                 if (m_demux)
  52                 {
  53                         eDebug("ok ... now we start!!");
  54
  55                         m_PAT.begin(eApp, eDVBPATSpec(), m_demux);
  56
  57                         if ( m_service && !m_service->cacheEmpty() )
  58                                 serviceEvent(eventNewProgramInfo);
  59                 }
  60         } else if ((m_last_channel_state != iDVBChannel::state_failed) &&
  61                         (state == iDVBChannel::state_failed))
  62         {
  63                 eDebug("tune failed.");
  64                 serviceEvent(eventTuneFailed);
  65         }
  66 }
  67
  68 void eDVBServicePMTHandler::PMTready(int error)
  69 {
  70         if (error)
  71                 serviceEvent(eventNoPMT);
  72         else
  73         {
  74                 serviceEvent(eventNewProgramInfo);
  75                 if (!m_pvr_channel)
  76                 {
  77                         if(!m_ca_servicePtr)   // don't send campmt to camd.socket for playbacked services
  78                         {
  79                                 uint8_t demux_num;
  80                                 m_demux->getCADemuxID(demux_num);
  81                                 eDVBCAService::register_service(m_reference, demux_num, m_ca_servicePtr);
  82                                 eDVBCIInterfaces::getInstance()->addPMTHandler(this);
  83                         }
  84                         eDVBCIInterfaces::getInstance()->gotPMT(this);
  85                 }
  86                 if (m_ca_servicePtr)
  87                 {
  88                         ePtr<eTable<ProgramMapSection> > ptr;
  89                         if (!m_PMT.getCurrent(ptr))
  90                                 m_ca_servicePtr->buildCAPMT(ptr);
  91                         else
  92                                 eDebug("eDVBServicePMTHandler cannot call buildCAPMT");
  93                 }
  94         }
  95 }
  96
  97 void eDVBServicePMTHandler::PATready(int)
  98 {
  99         eDebug("got PAT");
 100         ePtr<eTable<ProgramAssociationSection> > ptr;
 101         if (!m_PAT.getCurrent(ptr))
 102         {
 103                 int pmtpid = -1;
 104                 std::vector<ProgramAssociationSection*>::const_iterator i;
 105                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 106                 {
 107                         const ProgramAssociationSection &pat = **i;
 108                         ProgramAssociationConstIterator program;
 109                         for (program = pat.getPrograms()->begin(); program != pat.getPrograms()->end(); ++program)
 110                                 if (eServiceID((*program)->getProgramNumber()) == m_reference.getServiceID())
 111                                         pmtpid = (*program)->getProgramMapPid();
 112                 }
 113                 if (pmtpid == -1)
 114                         serviceEvent(eventNoPATEntry);
 115                 else
 116                         m_PMT.begin(eApp, eDVBPMTSpec(pmtpid, m_reference.getServiceID().get()), m_demux);
 117         } else
 118                 serviceEvent(eventNoPAT);
 119 }
 120
 121 int eDVBServicePMTHandler::getProgramInfo(struct program &program)
 122 {
 123         ePtr<eTable<ProgramMapSection> > ptr;
 124
 125         program.videoStreams.clear();
 126         program.audioStreams.clear();
 127         program.pcrPid = -1;
 128
 129         if (!m_PMT.getCurrent(ptr))
 130         {
 131                 eDVBTableSpec table_spec;
 132                 ptr->getSpec(table_spec);
 133                 program.pmtPid = table_spec.pid < 0x1fff ? table_spec.pid : -1;
 134                 std::vector<ProgramMapSection*>::const_iterator i;
 135                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 136                 {
 137                         const ProgramMapSection &pmt = **i;
 138                         program.pcrPid = pmt.getPcrPid();
 139
 140                         ElementaryStreamInfoConstIterator es;
 141                         for (es = pmt.getEsInfo()->begin(); es != pmt.getEsInfo()->end(); ++es)
 142                         {
 143                                 int isaudio = 0, isvideo = 0;
 144                                 videoStream video;
 145                                 audioStream audio;
 146
 147                                 video.pid = (*es)->getPid();
 148                                 audio.pid = (*es)->getPid();
 149
 150                                 switch ((*es)->getType())
 151                                 {
 152                                 case 0x01: // MPEG 1 video
 153                                 case 0x02: // MPEG 2 video
 154                                         isvideo = 1;
 155                                         break;
 156                                 case 0x03: // MPEG 1 audio
 157                                 case 0x04: // MPEG 2 audio:
 158                                         isaudio = 1;
 159                                         audio.type = audioStream::atMPEG;
 160                                         break;
 161                                 case 0x06: // PES Private
 162                                                 /* PES private can contain AC-3, DTS or lots of other stuff.
 163                                                    check descriptors to get the exact type. */
 164                                         for (DescriptorConstIterator desc = (*es)->getDescriptors()->begin();
 165                                                         desc != (*es)->getDescriptors()->end(); ++desc)
 166                                         {
 167                                                 switch ((*desc)->getTag())
 168                                                 {
 169                                                 case AC3_DESCRIPTOR:
 170                                                         isaudio = 1;
 171                                                         audio.type = audioStream::atAC3;
 172                                                         break;
 173                                                 }
 174                                         }
 175                                         break;
 176                                 }
 177                                 if (isaudio)
 178                                 {
 179                                         for (DescriptorConstIterator desc = (*es)->getDescriptors()->begin();
 180                                                         desc != (*es)->getDescriptors()->end(); ++desc)
 181                                         {
 182                                                 switch ((*desc)->getTag())
 183                                                 {
 184                                                 case ISO_639_LANGUAGE_DESCRIPTOR:
 185                                                 {
 186                                                         const Iso639LanguageList *languages = ((Iso639LanguageDescriptor*)*desc)->getIso639Languages();
 187
 188                                                                 /* use last language code */
 189                                                         for (Iso639LanguageConstIterator i(languages->begin()); i != languages->end(); ++i)
 190                                                                 audio.language_code = (*i)->getIso639LanguageCode();
 191
 192                                                         break;
 193                                                 }
 194                                                 case COMPONENT_DESCRIPTOR:
 195                                                         audio.component_tag = ((ComponentDescriptor*)*desc)->getComponentTag();
 196                                                         break;
 197                                                 }
 198                                         }
 199
 200                                         program.audioStreams.push_back(audio);
 201                                 }
 202                                 if (isvideo)
 203                                         program.videoStreams.push_back(video);
 204                         }
 205                 }
 206                 return 0;
 207         }
 208         else if ( m_service && !m_service->cacheEmpty() )
 209         {
 210                 int vpid = m_service->getCachePID(eDVBService::cVPID),
 211                         apid_ac3 = m_service->getCachePID(eDVBService::cAPID),
 212                         apid_mpeg = m_service->getCachePID(eDVBService::cAC3PID),
 213                         pcrpid = m_service->getCachePID(eDVBService::cPCRPID),
 214                         cnt=0;
 215                 if ( vpid != -1 )
 216                 {
 217                         videoStream s;
 218                         s.pid = vpid;
 219                         program.videoStreams.push_back(s);
 220                         ++cnt;
 221                 }
 222                 if ( apid_ac3 != -1 )
 223                 {
 224                         audioStream s;
 225                         s.type = audioStream::atAC3;
 226                         s.pid = apid_ac3;
 227                         program.audioStreams.push_back(s);
 228                         ++cnt;
 229                 }
 230                 if ( apid_mpeg != -1 )
 231                 {
 232                         audioStream s;
 233                         s.type = audioStream::atMPEG;
 234                         s.pid = apid_mpeg;
 235                         program.audioStreams.push_back(s);
 236                         ++cnt;
 237                 }
 238                 if ( pcrpid != -1 )
 239                 {
 240                         ++cnt;
 241                         program.pcrPid = pcrpid;
 242                 }
 243                 if ( cnt )
 244                         return 0;
 245         }
 246         return -1;
 247 }
 248
 249 int eDVBServicePMTHandler::getChannel(eUsePtr<iDVBChannel> &channel)
 250 {
 251         channel = m_channel;
 252         if (channel)
 253                 return 0;
 254         else
 255                 return -1;
 256 }
 257
 258 int eDVBServicePMTHandler::getDemux(ePtr<iDVBDemux> &demux)
 259 {
 260         demux = m_demux;
 261         if (demux)
 262                 return 0;
 263         else
 264                 return -1;
 265 }
 266
 267 int eDVBServicePMTHandler::getPVRChannel(ePtr<iDVBPVRChannel> &pvr_channel)
 268 {
 269         pvr_channel = m_pvr_channel;
 270         if (pvr_channel)
 271                 return 0;
 272         else
 273                 return -1;
 274 }
 275
 276 int eDVBServicePMTHandler::tune(eServiceReferenceDVB &ref)
 277 {
 278         RESULT res;
 279         m_reference = ref;
 280
 281                 /* is this a normal (non PVR) channel? */
 282         if (ref.path.empty())
 283         {
 284                 eDVBChannelID chid;
 285                 ref.getChannelID(chid);
 286                 res = m_resourceManager->allocateChannel(chid, m_channel);
 287                 eDebug("allocate Channel: res %d", res);
 288         } else
 289         {
 290                 eDVBMetaParser parser;
 291
 292                 if (parser.parseFile(ref.path))
 293                         eWarning("no .meta file found, trying original service ref.");
 294                 else
 295                         m_reference = parser.m_ref;
 296
 297                 eDebug("alloc PVR");
 298                         /* allocate PVR */
 299                 res = m_resourceManager->allocatePVRChannel(m_pvr_channel);
 300                 if (res)
 301                         eDebug("allocatePVRChannel failed!\n");
 302                 m_channel = m_pvr_channel;
 303         }
 304
 305         if (m_channel)
 306         {
 307                 m_channel->connectStateChange(
 308                         slot(*this, &eDVBServicePMTHandler::channelStateChanged),
 309                         m_channelStateChanged_connection);
 310                 m_last_channel_state = -1;
 311                 channelStateChanged(m_channel);
 312         } else
 313         {
 314                 serviceEvent(eventTuneFailed);
 315                 return res;
 316         }
 317
 318         if (m_pvr_channel)
 319                 m_pvr_channel->playFile(ref.path.c_str());
 320
 321         ePtr<iDVBChannelList> db;
 322         if (!m_resourceManager->getChannelList(db))
 323                 db->getService((eServiceReferenceDVB&)m_reference, m_service);
 324
 325         return res;
 326 }
 327
 328 std::map<eServiceReferenceDVB, eDVBCAService*> eDVBCAService::exist;
 329
 330 eDVBCAService::eDVBCAService()
 331         :m_prev_build_hash(0), m_sendstate(0), m_retryTimer(eApp)
 332 {
 333         memset(m_used_demux, 0xFF, sizeof(m_used_demux));
 334         CONNECT(m_retryTimer.timeout, eDVBCAService::sendCAPMT);
 335         Connect();
 336 }
 337
 338 eDVBCAService::~eDVBCAService()
 339 {
 340         eDebug("[eDVBCAService] free service %s", m_service.toString().c_str());
 341         ::close(m_sock);
 342 }
 343
 344 RESULT eDVBCAService::register_service( const eServiceReferenceDVB &ref, int demux_num, eDVBCAService *&caservice )
 345 {
 346         CAServiceMap::iterator it = exist.find(ref);
 347         if ( it != exist.end() )
 348                 caservice = it->second;
 349         else
 350         {
 351                 caservice = (exist[ref]=new eDVBCAService());
 352                 caservice->m_service = ref;
 353                 eDebug("[eDVBCAHandler] new service %s", ref.toString().c_str() );
 354         }
 355 // search free demux entry
 356         int iter=0, max_demux_slots = sizeof(caservice->m_used_demux);
 357
 358         while ( iter < max_demux_slots && caservice->m_used_demux[iter] != 0xFF )
 359                 ++iter;
 360
 361         if ( iter < max_demux_slots )
 362         {
 363                 caservice->m_used_demux[iter] = demux_num & 0xFF;
 364                 eDebug("[eDVBCAHandler] add demux %d to slot %d service %s", demux_num, iter, ref.toString().c_str());
 365         }
 366         else
 367         {
 368                 eDebug("[eDVBCAHandler] no more demux slots free for service %s!!", ref.toString().c_str());
 369                 return -1;
 370         }
 371         return 0;
 372 }
 373
 374 RESULT eDVBCAService::unregister_service( const eServiceReferenceDVB &ref, int demux_num, eTable<ProgramMapSection> *ptr )
 375 {
 376         CAServiceMap::iterator it = exist.find(ref);
 377         if ( it == exist.end() )
 378         {
 379                 eDebug("[eDVBCAHandler] try to unregister non registered %s", ref.toString().c_str());
 380                 return -1;
 381         }
 382         else
 383         {
 384                 eDVBCAService *caservice = it->second;
 385                 bool freed = false;
 386                 int iter = 0,
 387                         used_demux_slots = 0,
 388                         max_demux_slots = sizeof(caservice->m_used_demux)/sizeof(int);
 389                 while ( iter < max_demux_slots )
 390                 {
 391                         if ( caservice->m_used_demux[iter] != 0xFF )
 392                         {
 393                                 if ( !freed && caservice->m_used_demux[iter] == demux_num )
 394                                 {
 395                                         eDebug("[eDVBCAService] free slot %d demux %d for service %s", iter, caservice->m_used_demux[iter], caservice->m_service.toString().c_str() );
 396                                         caservice->m_used_demux[iter] = 0xFF;
 397                                         freed=true;
 398                                 }
 399                                 else
 400                                         ++used_demux_slots;
 401                         }
 402                         ++iter;
 403                 }
 404                 if (!freed)
 405                 {
 406                         eDebug("[eDVBCAService] couldn't free demux slot for demux %d", demux_num);
 407                         return -1;
 408                 }
 409                 if (!used_demux_slots)  // no more used.. so we remove it
 410                 {
 411                         delete it->second;
 412                         exist.erase(it);
 413                 }
 414                 else
 415                 {
 416                         if (ptr)
 417                                 it->second->buildCAPMT(ptr);
 418                         else
 419                                 eDebug("[eDVBCAHandler] can not send updated demux info");
 420                 }
 421         }
 422         return 0;
 423 }
 424
 425 void eDVBCAService::Connect()
 426 {
 427         memset(&m_servaddr, 0, sizeof(struct sockaddr_un));
 428         m_servaddr.sun_family = AF_UNIX;
 429         strcpy(m_servaddr.sun_path, "/tmp/camd.socket");
 430         m_clilen = sizeof(m_servaddr.sun_family) + strlen(m_servaddr.sun_path);
 431         m_sock = socket(PF_UNIX, SOCK_STREAM, 0);
 432         connect(m_sock, (struct sockaddr *) &m_servaddr, m_clilen);
 433         fcntl(m_sock, F_SETFL, O_NONBLOCK);
 434         int val=1;
 435         setsockopt(m_sock, SOL_SOCKET, SO_REUSEADDR, &val, 4);
 436 }
 437
 438 void eDVBCAService::buildCAPMT(eTable<ProgramMapSection> *ptr)
 439 {
 440         if (!ptr)
 441                 return;
 442
 443         eDVBTableSpec table_spec;
 444         ptr->getSpec(table_spec);
 445
 446         int pmtpid = table_spec.pid,
 447                 pmt_version = table_spec.version;
 448
 449         uint8_t demux_mask = 0;
 450         uint8_t first_demux_num = 0xFF;
 451
 452 #if 1
 453         int iter=0, max_demux_slots = sizeof(m_used_demux);
 454         while ( iter < max_demux_slots )
 455         {
 456                 if ( m_used_demux[iter] != 0xFF )
 457                 {
 458                         if ( first_demux_num == 0xFF )
 459                                 first_demux_num = m_used_demux[iter];
 460                         demux_mask |= (1 << m_used_demux[iter]);
 461                 }
 462                 ++iter;
 463         }
 464 #else
 465         demux_mask = 3;
 466         first_demux_num = 0;
 467 #endif
 468
 469         if ( first_demux_num == 0xFF )
 470         {
 471                 eDebug("[eDVBCAService] no demux found for service %s", m_service.toString().c_str() );
 472                 return;
 473         }
 474
 475         eDebug("demux %d mask %02x prevhash %08x", first_demux_num, demux_mask, m_prev_build_hash);
 476
 477         unsigned int build_hash = (pmtpid << 16);
 478         build_hash |= (demux_mask << 8);
 479         build_hash |= (pmt_version&0xFF);
 480
 481         if ( build_hash == m_prev_build_hash )
 482         {
 483                 eDebug("[eDVBCAService] don't build/send the same CA PMT twice");
 484                 return;
 485         }
 486
 487         std::vector<ProgramMapSection*>::const_iterator i=ptr->getSections().begin();
 488         if ( i != ptr->getSections().end() )
 489         {
 490                 CaProgramMapSection capmt(*i++, m_prev_build_hash ? 0x05 /*update*/ : 0x03 /*only*/, 0x01 );
 491
 492                 while( i != ptr->getSections().end() )
 493                 {
 494 //                      eDebug("append");
 495                         capmt.append(*i++);
 496                 }
 497
 498                 // add our private descriptors to capmt
 499                 uint8_t tmp[10];
 500
 501                 tmp[0]=0x84;  // pmt pid
 502                 tmp[1]=0x02;
 503                 tmp[2]=pmtpid>>8;
 504                 tmp[3]=pmtpid&0xFF;
 505                 capmt.injectDescriptor(tmp, false);
 506
 507                 tmp[0] = 0x82; // demux
 508                 tmp[1] = 0x02;
 509                 tmp[2] = demux_mask;    // descramble bitmask
 510                 tmp[3] = first_demux_num; // read section data from demux number
 511                 capmt.injectDescriptor(tmp, false);
 512
 513                 tmp[0] = 0x81; // dvbnamespace
 514                 tmp[1] = 0x08;
 515                 tmp[2] = m_service.getDVBNamespace().get()>>24;
 516                 tmp[3]=(m_service.getDVBNamespace().get()>>16)&0xFF;
 517                 tmp[4]=(m_service.getDVBNamespace().get()>>8)&0xFF;
 518                 tmp[5]=m_service.getDVBNamespace().get()&0xFF;
 519                 tmp[6]=m_service.getTransportStreamID().get()>>8;
 520                 tmp[7]=m_service.getTransportStreamID().get()&0xFF;
 521                 tmp[8]=m_service.getOriginalNetworkID().get()>>8;
 522                 tmp[9]=m_service.getOriginalNetworkID().get()&0xFF;
 523                 capmt.injectDescriptor(tmp, false);
 524
 525                 capmt.writeToBuffer(m_capmt);
 526         }
 527
 528         m_prev_build_hash = build_hash;
 529
 530         if ( m_sendstate != 0xFFFFFFFF )
 531                 m_sendstate=0;
 532         sendCAPMT();
 533 }
 534
 535 void eDVBCAService::sendCAPMT()
 536 {
 537         if ( m_sendstate && m_sendstate != 0xFFFFFFFF ) // broken pipe retry
 538         {
 539                 ::close(m_sock);
 540                 Connect();
 541         }
 542
 543         int wp=0;
 544         if ( m_capmt[3] & 0x80 )
 545         {
 546                 int i=0;
 547                 int lenbytes = m_capmt[3] & ~0x80;
 548                 while(i < lenbytes)
 549                         wp = (wp << 8) | m_capmt[4 + i++];
 550                 wp+=4;
 551                 wp+=lenbytes;
 552         }
 553         else
 554         {
 555                 wp = m_capmt[3];
 556                 wp+=4;
 557         }
 558
 559         if ( write(m_sock, m_capmt, wp) == wp )
 560         {
 561                 m_sendstate=0xFFFFFFFF;
 562                 eDebug("[eDVBCAHandler] send %d bytes",wp);
 563 #if 1
 564                 for(int i=0;i<wp;i++)
 565                         eDebugNoNewLine("%02x ", m_capmt[i]);
 566                 eDebug("");
 567 #endif
 568         }
 569         else
 570         {
 571                 switch(m_sendstate)
 572                 {
 573                         case 0xFFFFFFFF:
 574                                 ++m_sendstate;
 575                                 m_retryTimer.start(0,true);
 576 //                              eDebug("[eDVBCAHandler] send failed .. immediate retry");
 577                                 break;
 578                         default:
 579                                 m_retryTimer.start(5000,true);
 580 //                              eDebug("[eDVBCAHandler] send failed .. retry in 5 sec");
 581                                 break;
 582                 }
 583                 ++m_sendstate;
 584         }
 585 }