code.vuplus.com Git - vuplus_dvbapp/blob - 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 <lib/dvb/epgcache.h>
   8 #include <dvbsi++/ca_program_map_section.h>
   9 #include <dvbsi++/teletext_descriptor.h>
  10 #include <dvbsi++/descriptor_tag.h>
  11 #include <dvbsi++/iso639_language_descriptor.h>
  12 #include <dvbsi++/stream_identifier_descriptor.h>
  13
  14 eDVBServicePMTHandler::eDVBServicePMTHandler()
  15         :m_ca_servicePtr(0), m_decode_demux_num(0xFF)
  16 {
  17         m_use_decode_demux = 0;
  18         m_pmt_pid = -1;
  19         eDVBResourceManager::getInstance(m_resourceManager);
  20         CONNECT(m_PMT.tableReady, eDVBServicePMTHandler::PMTready);
  21         CONNECT(m_PAT.tableReady, eDVBServicePMTHandler::PATready);
  22 }
  23
  24 eDVBServicePMTHandler::~eDVBServicePMTHandler()
  25 {
  26         free();
  27 }
  28
  29 void eDVBServicePMTHandler::channelStateChanged(iDVBChannel *channel)
  30 {
  31         int state;
  32         channel->getState(state);
  33
  34         if ((m_last_channel_state != iDVBChannel::state_ok)
  35                 && (state == iDVBChannel::state_ok) && (!m_demux))
  36         {
  37                 if (m_channel)
  38                         if (m_channel->getDemux(m_demux, (!m_use_decode_demux) ? 0 : iDVBChannel::capDecode))
  39                                 eDebug("Allocating a demux for now tuned-in channel failed.");
  40
  41                 serviceEvent(eventTuned);
  42
  43                 if (m_demux)
  44                 {
  45                         eDebug("ok ... now we start!!");
  46
  47                         if (m_pmt_pid == -1)
  48                                 m_PAT.begin(eApp, eDVBPATSpec(), m_demux);
  49                         else
  50                                 m_PMT.begin(eApp, eDVBPMTSpec(m_pmt_pid, m_reference.getServiceID().get()), m_demux);
  51
  52                         if ( m_service && !m_service->cacheEmpty() )
  53                                 serviceEvent(eventNewProgramInfo);
  54                 }
  55         } else if ((m_last_channel_state != iDVBChannel::state_failed) &&
  56                         (state == iDVBChannel::state_failed))
  57         {
  58                 eDebug("tune failed.");
  59                 serviceEvent(eventTuneFailed);
  60         }
  61 }
  62
  63 void eDVBServicePMTHandler::channelEvent(iDVBChannel *channel, int event)
  64 {
  65         switch (event)
  66         {
  67         case iDVBChannel::evtEOF:
  68                 serviceEvent(eventEOF);
  69                 break;
  70         case iDVBChannel::evtSOF:
  71                 serviceEvent(eventSOF);
  72                 break;
  73         default:
  74                 break;
  75         }
  76 }
  77
  78 void eDVBServicePMTHandler::PMTready(int error)
  79 {
  80         if (error)
  81                 serviceEvent(eventNoPMT);
  82         else
  83         {
  84                 serviceEvent(eventNewProgramInfo);
  85                 eEPGCache::getInstance()->PMTready(this);
  86                 if (!m_pvr_channel)
  87                 {
  88                         if(!m_ca_servicePtr)   // don't send campmt to camd.socket for playbacked services
  89                         {
  90                                 int demuxes[2] = {0,0};
  91                                 uint8_t tmp;
  92                                 m_demux->getCADemuxID(tmp);
  93                                 demuxes[0]=tmp;
  94                                 if (m_decode_demux_num != 0xFF)
  95                                         demuxes[1]=m_decode_demux_num;
  96                                 else
  97                                         demuxes[1]=demuxes[0];
  98                                 eDVBCAService::register_service(m_reference, demuxes, m_ca_servicePtr);
  99                                 eDVBCIInterfaces::getInstance()->addPMTHandler(this);
 100                         }
 101                         eDVBCIInterfaces::getInstance()->gotPMT(this);
 102                 }
 103                 if (m_ca_servicePtr)
 104                 {
 105                         ePtr<eTable<ProgramMapSection> > ptr;
 106                         if (!m_PMT.getCurrent(ptr))
 107                                 m_ca_servicePtr->buildCAPMT(ptr);
 108                         else
 109                                 eDebug("eDVBServicePMTHandler cannot call buildCAPMT");
 110                 }
 111         }
 112 }
 113
 114 void eDVBServicePMTHandler::PATready(int)
 115 {
 116         ePtr<eTable<ProgramAssociationSection> > ptr;
 117         if (!m_PAT.getCurrent(ptr))
 118         {
 119                 int pmtpid = -1;
 120                 std::vector<ProgramAssociationSection*>::const_iterator i;
 121                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 122                 {
 123                         const ProgramAssociationSection &pat = **i;
 124                         ProgramAssociationConstIterator program;
 125                         for (program = pat.getPrograms()->begin(); program != pat.getPrograms()->end(); ++program)
 126                                 if (eServiceID((*program)->getProgramNumber()) == m_reference.getServiceID())
 127                                         pmtpid = (*program)->getProgramMapPid();
 128                 }
 129                 if (pmtpid == -1)
 130                         serviceEvent(eventNoPATEntry);
 131                 else
 132                         m_PMT.begin(eApp, eDVBPMTSpec(pmtpid, m_reference.getServiceID().get()), m_demux);
 133         } else
 134                 serviceEvent(eventNoPAT);
 135 }
 136
 137 int eDVBServicePMTHandler::getProgramInfo(struct program &program)
 138 {
 139         ePtr<eTable<ProgramMapSection> > ptr;
 140
 141         program.videoStreams.clear();
 142         program.audioStreams.clear();
 143         program.pcrPid = -1;
 144         program.isCrypted = false;
 145         program.pmtPid = -1;
 146         program.textPid = -1;
 147
 148         if (!m_PMT.getCurrent(ptr))
 149         {
 150                 int cached_apid_ac3 = -1;
 151                 int cached_apid_mpeg = -1;
 152                 int cached_vpid = -1;
 153                 int cached_tpid = -1;
 154                 if ( m_service && !m_service->cacheEmpty() )
 155                 {
 156                         cached_vpid = m_service->getCachePID(eDVBService::cVPID);
 157                         cached_apid_mpeg = m_service->getCachePID(eDVBService::cAC3PID);
 158                         cached_apid_ac3 = m_service->getCachePID(eDVBService::cAPID);
 159                         cached_tpid = m_service->getCachePID(eDVBService::cTPID);
 160                 }
 161                 eDVBTableSpec table_spec;
 162                 ptr->getSpec(table_spec);
 163                 program.pmtPid = table_spec.pid < 0x1fff ? table_spec.pid : -1;
 164                 std::vector<ProgramMapSection*>::const_iterator i;
 165                 for (i = ptr->getSections().begin(); i != ptr->getSections().end(); ++i)
 166                 {
 167                         const ProgramMapSection &pmt = **i;
 168                         program.pcrPid = pmt.getPcrPid();
 169
 170                         ElementaryStreamInfoConstIterator es;
 171                         for (es = pmt.getEsInfo()->begin(); es != pmt.getEsInfo()->end(); ++es)
 172                         {
 173                                 int isaudio = 0, isvideo = 0, cadescriptors = 0;
 174                                 videoStream video;
 175                                 audioStream audio;
 176                                 audio.component_tag=-1;
 177                                 video.component_tag=-1;
 178
 179                                 video.pid = (*es)->getPid();
 180                                 audio.pid = (*es)->getPid();
 181
 182                                 switch ((*es)->getType())
 183                                 {
 184                                 case 0x01: // MPEG 1 video
 185                                 case 0x02: // MPEG 2 video
 186                                         isvideo = 1;
 187                                         //break; fall through !!!
 188                                 case 0x03: // MPEG 1 audio
 189                                 case 0x04: // MPEG 2 audio:
 190                                         if (!isvideo)
 191                                         {
 192                                                 isaudio = 1;
 193                                                 audio.type = audioStream::atMPEG;
 194                                         }
 195                                         //break; fall through !!!
 196                                 case 0x06: // PES Private
 197                                                 /* PES private can contain AC-3, DTS or lots of other stuff.
 198                                                    check descriptors to get the exact type. */
 199                                         for (DescriptorConstIterator desc = (*es)->getDescriptors()->begin();
 200                                                         desc != (*es)->getDescriptors()->end(); ++desc)
 201                                         {
 202                                                 switch ((*desc)->getTag())
 203                                                 {
 204                                                 case TELETEXT_DESCRIPTOR:
 205                                                         if ( program.textPid == -1 || (*es)->getPid() == cached_tpid )
 206                                                                 program.textPid = (*es)->getPid();
 207                                                         break;
 208                                                 case AC3_DESCRIPTOR:
 209                                                         if (!isvideo)
 210                                                         {
 211                                                                 isaudio = 1;
 212                                                                 audio.type = audioStream::atAC3;
 213                                                         }
 214                                                         break;
 215                                                 case ISO_639_LANGUAGE_DESCRIPTOR:
 216                                                         if (!isvideo)
 217                                                         {
 218                                                                 const Iso639LanguageList *languages = ((Iso639LanguageDescriptor*)*desc)->getIso639Languages();
 219                                                                         /* use last language code */
 220                                                                 for (Iso639LanguageConstIterator i(languages->begin()); i != languages->end(); ++i)
 221                                                                         audio.language_code = (*i)->getIso639LanguageCode();
 222                                                         }
 223                                                         break;
 224                                                 case STREAM_IDENTIFIER_DESCRIPTOR:
 225                                                         audio.component_tag =
 226                                                                 video.component_tag =
 227                                                                         ((StreamIdentifierDescriptor*)*desc)->getComponentTag();
 228                                                         break;
 229                                                 case CA_DESCRIPTOR:
 230                                                         ++cadescriptors;
 231                                                         break;
 232                                                 }
 233                                         }
 234                                         break;
 235                                 }
 236                                 if (isaudio)
 237                                 {
 238                                         if ( !program.audioStreams.empty() &&
 239                                                 ( audio.pid == cached_apid_ac3 || audio.pid == cached_apid_mpeg) )
 240                                         {
 241                                                 program.audioStreams.push_back(program.audioStreams[0]);
 242                                                 program.audioStreams[0] = audio;
 243                                         }
 244                                         else
 245                                                 program.audioStreams.push_back(audio);
 246                                 }
 247                                 else if (isvideo)
 248                                 {
 249                                         if ( !program.videoStreams.empty() && video.pid == cached_vpid )
 250                                         {
 251                                                 program.videoStreams.push_back(program.videoStreams[0]);
 252                                                 program.videoStreams[0] = video;
 253                                         }
 254                                         else
 255                                                 program.videoStreams.push_back(video);
 256                                 }
 257                                 else
 258                                         continue;
 259                                 if ( cadescriptors > 0 )
 260                                         program.isCrypted=true;
 261                         }
 262                         if ( !program.isCrypted )
 263                         {
 264                                 for (DescriptorConstIterator desc = pmt.getDescriptors()->begin();
 265                                         desc != pmt.getDescriptors()->end(); ++desc)
 266                                 {
 267                                         switch ((*desc)->getTag())
 268                                         {
 269                                         case CA_DESCRIPTOR:
 270                                                 program.isCrypted=true;
 271                                                 break;
 272                                         }
 273                                 }
 274                                 break;
 275                         }
 276                 }
 277                 return 0;
 278         } else if ( m_service && !m_service->cacheEmpty() )
 279         {
 280                 int vpid = m_service->getCachePID(eDVBService::cVPID),
 281                         apid_ac3 = m_service->getCachePID(eDVBService::cAC3PID),
 282                         apid_mpeg = m_service->getCachePID(eDVBService::cAPID),
 283                         pcrpid = m_service->getCachePID(eDVBService::cPCRPID),
 284                         tpid = m_service->getCachePID(eDVBService::cTPID),
 285                         cnt=0;
 286                 if ( vpid != -1 )
 287                 {
 288                         videoStream s;
 289                         s.pid = vpid;
 290                         program.videoStreams.push_back(s);
 291                         ++cnt;
 292                 }
 293                 if ( apid_ac3 != -1 )
 294                 {
 295                         audioStream s;
 296                         s.type = audioStream::atAC3;
 297                         s.pid = apid_ac3;
 298                         program.audioStreams.push_back(s);
 299                         ++cnt;
 300                 }
 301                 if ( apid_mpeg != -1 )
 302                 {
 303                         audioStream s;
 304                         s.type = audioStream::atMPEG;
 305                         s.pid = apid_mpeg;
 306                         program.audioStreams.push_back(s);
 307                         ++cnt;
 308                 }
 309                 if ( pcrpid != -1 )
 310                 {
 311                         ++cnt;
 312                         program.pcrPid = pcrpid;
 313                 }
 314                 if ( tpid != -1 )
 315                 {
 316                         ++cnt;
 317                         program.textPid = tpid;
 318                 }
 319                 if ( cnt )
 320                         return 0;
 321         }
 322         return -1;
 323 }
 324
 325 int eDVBServicePMTHandler::getChannel(eUsePtr<iDVBChannel> &channel)
 326 {
 327         channel = m_channel;
 328         if (channel)
 329                 return 0;
 330         else
 331                 return -1;
 332 }
 333
 334 int eDVBServicePMTHandler::getDataDemux(ePtr<iDVBDemux> &demux)
 335 {
 336         demux = m_demux;
 337         if (demux)
 338                 return 0;
 339         else
 340                 return -1;
 341 }
 342
 343 int eDVBServicePMTHandler::getDecodeDemux(ePtr<iDVBDemux> &demux)
 344 {
 345         int ret=0;
 346                 /* if we're using the decoding demux as data source
 347                    (for example in pvr playbacks), return that one. */
 348         if (m_use_decode_demux)
 349         {
 350                 demux = m_demux;
 351                 return ret;
 352         }
 353
 354         ASSERT(m_channel); /* calling without a previous ::tune is certainly bad. */
 355
 356         ret = m_channel->getDemux(demux, iDVBChannel::capDecode);
 357         if (!ret)
 358                 demux->getCADemuxID(m_decode_demux_num);
 359
 360         return ret;
 361 }
 362
 363 int eDVBServicePMTHandler::getPVRChannel(ePtr<iDVBPVRChannel> &pvr_channel)
 364 {
 365         pvr_channel = m_pvr_channel;
 366         if (pvr_channel)
 367                 return 0;
 368         else
 369                 return -1;
 370 }
 371
 372 int eDVBServicePMTHandler::tune(eServiceReferenceDVB &ref, int use_decode_demux, eCueSheet *cue)
 373 {
 374         RESULT res;
 375         m_reference = ref;
 376
 377         m_use_decode_demux = use_decode_demux;
 378
 379                 /* is this a normal (non PVR) channel? */
 380         if (ref.path.empty())
 381         {
 382                 eDVBChannelID chid;
 383                 ref.getChannelID(chid);
 384                 res = m_resourceManager->allocateChannel(chid, m_channel);
 385                 eDebug("allocate Channel: res %d", res);
 386         } else
 387         {
 388                 eDVBMetaParser parser;
 389
 390                 if (parser.parseFile(ref.path))
 391                 {
 392                         eWarning("no .meta file found, trying to find PMT pid");
 393                         eDVBTSTools tstools;
 394                         if (tstools.openFile(ref.path.c_str()))
 395                                 eWarning("failed to open file");
 396                         else
 397                         {
 398                                 int service_id, pmt_pid;
 399                                 if (!tstools.findPMT(pmt_pid, service_id))
 400                                 {
 401                                         eDebug("PMT pid found on pid %04x, service id %d", pmt_pid, service_id);
 402                                         m_reference.setServiceID(service_id);
 403                                         m_pmt_pid = pmt_pid;
 404                                 }
 405                         }
 406                 } else
 407                         m_reference = parser.m_ref;
 408
 409                 eDebug("alloc PVR");
 410                         /* allocate PVR */
 411                 res = m_resourceManager->allocatePVRChannel(m_pvr_channel);
 412                 if (res)
 413                         eDebug("allocatePVRChannel failed!\n");
 414                 m_channel = m_pvr_channel;
 415         }
 416
 417         if (m_channel)
 418         {
 419                 m_channel->connectStateChange(
 420                         slot(*this, &eDVBServicePMTHandler::channelStateChanged),
 421                         m_channelStateChanged_connection);
 422                 m_last_channel_state = -1;
 423                 channelStateChanged(m_channel);
 424
 425                 m_channel->connectEvent(
 426                         slot(*this, &eDVBServicePMTHandler::channelEvent),
 427                         m_channelEvent_connection);
 428         } else
 429         {
 430                 serviceEvent(eventTuneFailed);
 431                 return res;
 432         }
 433
 434         if (m_pvr_channel)
 435         {
 436                 m_pvr_channel->setCueSheet(cue);
 437                 m_pvr_channel->playFile(ref.path.c_str());
 438         }
 439
 440         ePtr<iDVBChannelList> db;
 441         if (!m_resourceManager->getChannelList(db))
 442                 db->getService((eServiceReferenceDVB&)m_reference, m_service);
 443
 444         return res;
 445 }
 446
 447 void eDVBServicePMTHandler::free()
 448 {
 449         if (m_ca_servicePtr)
 450         {
 451                 int demuxes[2] = {0,0};
 452                 uint8_t tmp;
 453                 m_demux->getCADemuxID(tmp);
 454                 demuxes[0]=tmp;
 455                 if (m_decode_demux_num != 0xFF)
 456                         demuxes[1]=m_decode_demux_num;
 457                 else
 458                         demuxes[1]=demuxes[0];
 459                 ePtr<eTable<ProgramMapSection> > ptr;
 460                 m_PMT.getCurrent(ptr);
 461                 eDVBCAService::unregister_service(m_reference, demuxes, ptr);
 462                 eDVBCIInterfaces::getInstance()->removePMTHandler(this);
 463                 m_ca_servicePtr = 0;
 464         }
 465
 466         if (m_pvr_channel)
 467         {
 468                 m_pvr_channel->stopFile();
 469                 m_pvr_channel->setCueSheet(0);
 470         }
 471         m_PMT.stop();
 472         m_PAT.stop();
 473         m_service = 0;
 474         m_channel = 0;
 475         m_pvr_channel = 0;
 476         m_demux = 0;
 477 }
 478
 479 std::map<eServiceReferenceDVB, eDVBCAService*> eDVBCAService::exist;
 480
 481 eDVBCAService::eDVBCAService()
 482         :m_prev_build_hash(0), m_sendstate(0), m_retryTimer(eApp)
 483 {
 484         memset(m_used_demux, 0xFF, sizeof(m_used_demux));
 485         CONNECT(m_retryTimer.timeout, eDVBCAService::sendCAPMT);
 486         Connect();
 487 }
 488
 489 eDVBCAService::~eDVBCAService()
 490 {
 491         eDebug("[eDVBCAService] free service %s", m_service.toString().c_str());
 492         ::close(m_sock);
 493 }
 494
 495 RESULT eDVBCAService::register_service( const eServiceReferenceDVB &ref, int demux_nums[2], eDVBCAService *&caservice )
 496 {
 497         CAServiceMap::iterator it = exist.find(ref);
 498         if ( it != exist.end() )
 499                 caservice = it->second;
 500         else
 501         {
 502                 caservice = (exist[ref]=new eDVBCAService());
 503                 caservice->m_service = ref;
 504                 eDebug("[eDVBCAService] new service %s", ref.toString().c_str() );
 505         }
 506
 507         int loops = demux_nums[0] != demux_nums[1] ? 2 : 1;
 508         for (int i=0; i < loops; ++i)
 509         {
 510 // search free demux entry
 511                 int iter=0, max_demux_slots = sizeof(caservice->m_used_demux);
 512
 513                 while ( iter < max_demux_slots && caservice->m_used_demux[iter] != 0xFF )
 514                         ++iter;
 515
 516                 if ( iter < max_demux_slots )
 517                 {
 518                         caservice->m_used_demux[iter] = demux_nums[i] & 0xFF;
 519                         eDebug("[eDVBCAService] add demux %d to slot %d service %s", caservice->m_used_demux[iter], iter, ref.toString().c_str());
 520                 }
 521                 else
 522                 {
 523                         eDebug("[eDVBCAService] no more demux slots free for service %s!!", ref.toString().c_str());
 524                         return -1;
 525                 }
 526         }
 527         return 0;
 528 }
 529
 530 RESULT eDVBCAService::unregister_service( const eServiceReferenceDVB &ref, int demux_nums[2], eTable<ProgramMapSection> *ptr )
 531 {
 532         CAServiceMap::iterator it = exist.find(ref);
 533         if ( it == exist.end() )
 534         {
 535                 eDebug("[eDVBCAService] try to unregister non registered %s", ref.toString().c_str());
 536                 return -1;
 537         }
 538         else
 539         {
 540                 eDVBCAService *caservice = it->second;
 541                 int loops = demux_nums[0] != demux_nums[1] ? 2 : 1;
 542                 for (int i=0; i < loops; ++i)
 543                 {
 544                         bool freed = false;
 545                         int iter = 0,
 546                                 used_demux_slots = 0,
 547                                 max_demux_slots = sizeof(caservice->m_used_demux)/sizeof(int);
 548                         while ( iter < max_demux_slots )
 549                         {
 550                                 if ( caservice->m_used_demux[iter] != 0xFF )
 551                                 {
 552                                         if ( !freed && caservice->m_used_demux[iter] == demux_nums[i] )
 553                                         {
 554                                                 eDebug("[eDVBCAService] free slot %d demux %d for service %s", iter, caservice->m_used_demux[iter], caservice->m_service.toString().c_str() );
 555                                                 caservice->m_used_demux[iter] = 0xFF;
 556                                                 freed=true;
 557                                         }
 558                                         else
 559                                                 ++used_demux_slots;
 560                                 }
 561                                 ++iter;
 562                         }
 563                         if (!freed)
 564                                 eDebug("[eDVBCAService] couldn't free demux slot for demux %d", demux_nums[i]);
 565                         if (i || loops == 1)
 566                         {
 567                                 if (!used_demux_slots)  // no more used.. so we remove it
 568                                 {
 569                                         delete it->second;
 570                                         exist.erase(it);
 571                                 }
 572                                 else
 573                                 {
 574                                         if (ptr)
 575                                                 it->second->buildCAPMT(ptr);
 576                                         else
 577                                                 eDebug("[eDVBCAService] can not send updated demux info");
 578                                 }
 579                         }
 580                 }
 581         }
 582         return 0;
 583 }
 584
 585 void eDVBCAService::Connect()
 586 {
 587         memset(&m_servaddr, 0, sizeof(struct sockaddr_un));
 588         m_servaddr.sun_family = AF_UNIX;
 589         strcpy(m_servaddr.sun_path, "/tmp/camd.socket");
 590         m_clilen = sizeof(m_servaddr.sun_family) + strlen(m_servaddr.sun_path);
 591         m_sock = socket(PF_UNIX, SOCK_STREAM, 0);
 592         connect(m_sock, (struct sockaddr *) &m_servaddr, m_clilen);
 593         fcntl(m_sock, F_SETFL, O_NONBLOCK);
 594         int val=1;
 595         setsockopt(m_sock, SOL_SOCKET, SO_REUSEADDR, &val, 4);
 596 }
 597
 598 void eDVBCAService::buildCAPMT(eTable<ProgramMapSection> *ptr)
 599 {
 600         if (!ptr)
 601                 return;
 602
 603         eDVBTableSpec table_spec;
 604         ptr->getSpec(table_spec);
 605
 606         int pmtpid = table_spec.pid,
 607                 pmt_version = table_spec.version;
 608
 609         uint8_t demux_mask = 0;
 610         int data_demux = -1;
 611
 612         int iter=0, max_demux_slots = sizeof(m_used_demux);
 613         while ( iter < max_demux_slots )
 614         {
 615                 if ( m_used_demux[iter] != 0xFF )
 616                 {
 617                         if ( m_used_demux[iter] > data_demux )
 618                                 data_demux = m_used_demux[iter];
 619                         demux_mask |= (1 << m_used_demux[iter]);
 620                 }
 621                 ++iter;
 622         }
 623
 624         if ( data_demux == -1 )
 625         {
 626                 eDebug("[eDVBCAService] no data demux found for service %s", m_service.toString().c_str() );
 627                 return;
 628         }
 629
 630         eDebug("demux %d mask %02x prevhash %08x", data_demux, demux_mask, m_prev_build_hash);
 631
 632         unsigned int build_hash = (pmtpid << 16);
 633         build_hash |= (demux_mask << 8);
 634         build_hash |= (pmt_version&0xFF);
 635
 636         if ( build_hash == m_prev_build_hash )
 637         {
 638                 eDebug("[eDVBCAService] don't build/send the same CA PMT twice");
 639                 return;
 640         }
 641
 642         std::vector<ProgramMapSection*>::const_iterator i=ptr->getSections().begin();
 643         if ( i != ptr->getSections().end() )
 644         {
 645                 CaProgramMapSection capmt(*i++, m_prev_build_hash ? 0x05 /*update*/ : 0x03 /*only*/, 0x01 );
 646
 647                 while( i != ptr->getSections().end() )
 648                 {
 649 //                      eDebug("append");
 650                         capmt.append(*i++);
 651                 }
 652
 653                 // add our private descriptors to capmt
 654                 uint8_t tmp[10];
 655
 656                 tmp[0]=0x84;  // pmt pid
 657                 tmp[1]=0x02;
 658                 tmp[2]=pmtpid>>8;
 659                 tmp[3]=pmtpid&0xFF;
 660                 capmt.injectDescriptor(tmp, false);
 661
 662                 tmp[0] = 0x82; // demux
 663                 tmp[1] = 0x02;
 664                 tmp[2] = demux_mask;    // descramble bitmask
 665                 tmp[3] = data_demux&0xFF; // read section data from demux number
 666                 capmt.injectDescriptor(tmp, false);
 667
 668                 tmp[0] = 0x81; // dvbnamespace
 669                 tmp[1] = 0x08;
 670                 tmp[2] = m_service.getDVBNamespace().get()>>24;
 671                 tmp[3]=(m_service.getDVBNamespace().get()>>16)&0xFF;
 672                 tmp[4]=(m_service.getDVBNamespace().get()>>8)&0xFF;
 673                 tmp[5]=m_service.getDVBNamespace().get()&0xFF;
 674                 tmp[6]=m_service.getTransportStreamID().get()>>8;
 675                 tmp[7]=m_service.getTransportStreamID().get()&0xFF;
 676                 tmp[8]=m_service.getOriginalNetworkID().get()>>8;
 677                 tmp[9]=m_service.getOriginalNetworkID().get()&0xFF;
 678                 capmt.injectDescriptor(tmp, false);
 679
 680                 capmt.writeToBuffer(m_capmt);
 681         }
 682
 683         m_prev_build_hash = build_hash;
 684
 685         if ( m_sendstate != 0xFFFFFFFF )
 686                 m_sendstate=0;
 687         sendCAPMT();
 688 }
 689
 690 void eDVBCAService::sendCAPMT()
 691 {
 692         if ( m_sendstate && m_sendstate != 0xFFFFFFFF ) // broken pipe retry
 693         {
 694                 ::close(m_sock);
 695                 Connect();
 696         }
 697
 698         int wp=0;
 699         if ( m_capmt[3] & 0x80 )
 700         {
 701                 int i=0;
 702                 int lenbytes = m_capmt[3] & ~0x80;
 703                 while(i < lenbytes)
 704                         wp = (wp << 8) | m_capmt[4 + i++];
 705                 wp+=4;
 706                 wp+=lenbytes;
 707         }
 708         else
 709         {
 710                 wp = m_capmt[3];
 711                 wp+=4;
 712         }
 713
 714         if ( write(m_sock, m_capmt, wp) == wp )
 715         {
 716                 m_sendstate=0xFFFFFFFF;
 717                 eDebug("[eDVBCAService] send %d bytes",wp);
 718 #if 1
 719                 for(int i=0;i<wp;i++)
 720                         eDebugNoNewLine("%02x ", m_capmt[i]);
 721                 eDebug("");
 722 #endif
 723         }
 724         else
 725         {
 726                 switch(m_sendstate)
 727                 {
 728                         case 0xFFFFFFFF:
 729                                 ++m_sendstate;
 730                                 m_retryTimer.start(0,true);
 731 //                              eDebug("[eDVBCAService] send failed .. immediate retry");
 732                                 break;
 733                         default:
 734                                 m_retryTimer.start(5000,true);
 735 //                              eDebug("[eDVBCAService] send failed .. retry in 5 sec");
 736                                 break;
 737                 }
 738                 ++m_sendstate;
 739         }
 740 }