lib/dvb/dvb.cpp

   1 #include <lib/base/eerror.h>
   2 #include <lib/base/filepush.h>
   3 #include <lib/dvb/idvb.h>
   4 #include <lib/dvb/dvb.h>
   5 #include <lib/dvb/sec.h>
   6
   7 #include <errno.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <unistd.h>
  11 #include <fcntl.h>
  12 #include <sys/ioctl.h>
  13
  14 DEFINE_REF(eDVBRegisteredFrontend);
  15 DEFINE_REF(eDVBRegisteredDemux);
  16
  17 DEFINE_REF(eDVBAllocatedFrontend);
  18
  19 eDVBAllocatedFrontend::eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe): m_fe(fe)
  20 {
  21         m_fe->inc_use();
  22 }
  23
  24 eDVBAllocatedFrontend::~eDVBAllocatedFrontend()
  25 {
  26         m_fe->dec_use();
  27 }
  28
  29 DEFINE_REF(eDVBAllocatedDemux);
  30
  31 eDVBAllocatedDemux::eDVBAllocatedDemux(eDVBRegisteredDemux *demux): m_demux(demux)
  32 {
  33         m_demux->m_inuse++;
  34 }
  35
  36 eDVBAllocatedDemux::~eDVBAllocatedDemux()
  37 {
  38         --m_demux->m_inuse;
  39 }
  40
  41 DEFINE_REF(eDVBResourceManager);
  42
  43 eDVBResourceManager *eDVBResourceManager::instance;
  44
  45 eDVBResourceManager::eDVBResourceManager()
  46 {
  47         avail = 1;
  48         busy = 0;
  49         m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
  50         if (!instance)
  51                 instance = this;
  52
  53                 /* search available adapters... */
  54
  55                 // add linux devices
  56
  57         int num_adapter = 0;
  58         while (eDVBAdapterLinux::exist(num_adapter))
  59         {
  60                 addAdapter(new eDVBAdapterLinux(num_adapter));
  61                 num_adapter++;
  62         }
  63
  64         eDebug("found %d adapter, %d frontends and %d demux",
  65                 m_adapter.size(), m_frontend.size(), m_demux.size());
  66 }
  67
  68
  69 DEFINE_REF(eDVBAdapterLinux);
  70 eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
  71 {
  72                 // scan frontends
  73         int num_fe = 0;
  74
  75         eDebug("scanning for frontends..");
  76         while (1)
  77         {
  78                 struct stat s;
  79                 char filename[128];
  80 #if HAVE_DVB_API_VERSION < 3
  81                 sprintf(filename, "/dev/dvb/card%d/frontend%d", m_nr, num_fe);
  82 #else
  83                 sprintf(filename, "/dev/dvb/adapter%d/frontend%d", m_nr, num_fe);
  84 #endif
  85                 if (stat(filename, &s))
  86                         break;
  87                 ePtr<eDVBFrontend> fe;
  88
  89                 int ok = 0;
  90                 fe = new eDVBFrontend(m_nr, num_fe, ok);
  91                 if (ok)
  92                         m_frontend.push_back(fe);
  93                 ++num_fe;
  94         }
  95
  96                 // scan demux
  97         int num_demux = 0;
  98         while (1)
  99         {
 100                 struct stat s;
 101                 char filename[128];
 102 #if HAVE_DVB_API_VERSION < 3
 103                 sprintf(filename, "/dev/dvb/card%d/demux%d", m_nr, num_demux);
 104 #else
 105                 sprintf(filename, "/dev/dvb/adapter%d/demux%d", m_nr, num_demux);
 106 #endif
 107                 if (stat(filename, &s))
 108                         break;
 109                 ePtr<eDVBDemux> demux;
 110
 111                 demux = new eDVBDemux(m_nr, num_demux);
 112                 m_demux.push_back(demux);
 113
 114                 ++num_demux;
 115         }
 116 }
 117
 118 int eDVBAdapterLinux::getNumDemux()
 119 {
 120         return m_demux.size();
 121 }
 122
 123 RESULT eDVBAdapterLinux::getDemux(ePtr<eDVBDemux> &demux, int nr)
 124 {
 125         eSmartPtrList<eDVBDemux>::iterator i(m_demux.begin());
 126         while (nr && (i != m_demux.end()))
 127         {
 128                 --nr;
 129                 ++i;
 130         }
 131
 132         if (i != m_demux.end())
 133                 demux = *i;
 134         else
 135                 return -1;
 136
 137         return 0;
 138 }
 139
 140 int eDVBAdapterLinux::getNumFrontends()
 141 {
 142         return m_frontend.size();
 143 }
 144
 145 RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr)
 146 {
 147         eSmartPtrList<eDVBFrontend>::iterator i(m_frontend.begin());
 148         while (nr && (i != m_frontend.end()))
 149         {
 150                 --nr;
 151                 ++i;
 152         }
 153
 154         if (i != m_frontend.end())
 155                 fe = *i;
 156         else
 157                 return -1;
 158
 159         return 0;
 160 }
 161
 162 int eDVBAdapterLinux::exist(int nr)
 163 {
 164         struct stat s;
 165         char filename[128];
 166 #if HAVE_DVB_API_VERSION < 3
 167         sprintf(filename, "/dev/dvb/card%d", nr);
 168 #else
 169         sprintf(filename, "/dev/dvb/adapter%d", nr);
 170 #endif
 171         if (!stat(filename, &s))
 172                 return 1;
 173         return 0;
 174 }
 175
 176 eDVBResourceManager::~eDVBResourceManager()
 177 {
 178         if (instance == this)
 179                 instance = 0;
 180 }
 181
 182 void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
 183 {
 184         int num_fe = adapter->getNumFrontends();
 185         int num_demux = adapter->getNumDemux();
 186
 187         m_adapter.push_back(adapter);
 188
 189         int i;
 190         for (i=0; i<num_demux; ++i)
 191         {
 192                 ePtr<eDVBDemux> demux;
 193                 if (!adapter->getDemux(demux, i))
 194                         m_demux.push_back(new eDVBRegisteredDemux(demux, adapter));
 195         }
 196
 197         for (i=0; i<num_fe; ++i)
 198         {
 199                 ePtr<eDVBFrontend> frontend;
 200
 201                 if (!adapter->getFrontend(frontend, i))
 202                 {
 203                         frontend->setSEC(m_sec);
 204                         m_frontend.push_back(new eDVBRegisteredFrontend(frontend, adapter));
 205                 }
 206         }
 207 }
 208
 209 RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm)
 210 {
 211         ePtr<eDVBRegisteredFrontend> best;
 212         int bestval = 0;
 213
 214         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 215                 if (!i->m_inuse)
 216                 {
 217                         int c = i->m_frontend->isCompatibleWith(feparm);
 218                         if (c > bestval)
 219                         {
 220                                 bestval = c;
 221                                 best = i;
 222                         }
 223                 }
 224
 225         if (best)
 226         {
 227                 fe = new eDVBAllocatedFrontend(best);
 228                 return 0;
 229         }
 230
 231         fe = 0;
 232
 233         return -1;
 234 }
 235
 236 RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int nr)
 237 {
 238         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i, --nr)
 239                 if ((!nr) && !i->m_inuse)
 240                 {
 241                         fe = new eDVBAllocatedFrontend(i);
 242                         return 0;
 243                 }
 244
 245         fe = 0;
 246         return -1;
 247 }
 248
 249 RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
 250 {
 251                 /* find first unused demux which is on same adapter as frontend (or any, if PVR)
 252                    never use the first one unless we need a decoding demux. */
 253
 254         eDebug("allocate demux");
 255         eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
 256
 257         if (i == m_demux.end())
 258                 return -1;
 259
 260         int n=0;
 261                 /* FIXME: hardware demux policy */
 262         if (!(cap & iDVBChannel::capDecode))
 263                 ++i, ++n;
 264
 265         for (; i != m_demux.end(); ++i, ++n)
 266                 if ((!i->m_inuse) && ((!fe) || (i->m_adapter == fe->m_adapter)))
 267                 {
 268                         if ((cap & iDVBChannel::capDecode) && n)
 269                                 continue;
 270
 271                         demux = new eDVBAllocatedDemux(i);
 272                         if (fe)
 273                                 demux->get().setSourceFrontend(fe->m_frontend->getID());
 274                         else
 275                                 demux->get().setSourcePVR(0);
 276                         return 0;
 277                 }
 278         eDebug("demux not found");
 279         return -1;
 280 }
 281
 282 RESULT eDVBResourceManager::setChannelList(iDVBChannelList *list)
 283 {
 284         m_list = list;
 285         return 0;
 286 }
 287
 288 RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
 289 {
 290         list = m_list;
 291         if (list)
 292                 return 0;
 293         else
 294                 return -ENOENT;
 295 }
 296
 297 RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel)
 298 {
 299                 /* first, check if a channel is already existing. */
 300
 301         if (m_cached_channel)
 302         {
 303                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 304                 if(channelid==cache_chan->getChannelID())
 305                 {
 306                         eDebug("use cached_channel");
 307                         channel = m_cached_channel;
 308                         return 0;
 309                 }
 310                 m_cached_channel=0;
 311         }
 312
 313 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 314         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 315         {
 316 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 317                 if (i->m_channel_id == channelid)
 318                 {
 319 //                      eDebug("found shared channel..");
 320                         channel = i->m_channel;
 321                         return 0;
 322                 }
 323         }
 324
 325         /* no currently available channel is tuned to this channelid. create a new one, if possible. */
 326
 327         if (!m_list)
 328         {
 329                 eDebug("no channel list set!");
 330                 return -ENOENT;
 331         }
 332
 333         ePtr<iDVBFrontendParameters> feparm;
 334         if (m_list->getChannelFrontendData(channelid, feparm))
 335         {
 336                 eDebug("channel not found!");
 337                 return -ENOENT;
 338         }
 339
 340         /* allocate a frontend. */
 341
 342         ePtr<eDVBAllocatedFrontend> fe;
 343
 344         if (allocateFrontend(fe, feparm))
 345                 return errNoFrontend;
 346
 347         RESULT res;
 348         ePtr<eDVBChannel> ch;
 349         ch = new eDVBChannel(this, fe);
 350
 351         res = ch->setChannel(channelid, feparm);
 352         if (res)
 353         {
 354                 channel = 0;
 355                 return errChidNotFound;
 356         }
 357         m_cached_channel = channel = ch;
 358
 359         return 0;
 360 }
 361
 362 RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
 363 {
 364         ePtr<eDVBAllocatedFrontend> fe;
 365
 366         if (m_cached_channel)
 367                 m_cached_channel=0;
 368
 369         if (allocateFrontendByIndex(fe, frontend_index))
 370                 return errNoFrontend;
 371
 372         eDVBChannel *ch;
 373         ch = new eDVBChannel(this, fe);
 374
 375         channel = ch;
 376         return 0;
 377 }
 378
 379
 380 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 381 {
 382         ePtr<eDVBAllocatedDemux> demux;
 383
 384         if (m_cached_channel)
 385                 m_cached_channel=0;
 386
 387         eDVBChannel *ch;
 388         ch = new eDVBChannel(this, 0);
 389
 390         channel = ch;
 391         return 0;
 392 }
 393
 394 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
 395 {
 396         m_active_channels.push_back(active_channel(chid, ch));
 397         /* emit */ m_channelAdded(ch);
 398         return 0;
 399 }
 400
 401 RESULT eDVBResourceManager::removeChannel(eDVBChannel *ch)
 402 {
 403         int cnt = 0;
 404         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end();)
 405         {
 406                 if (i->m_channel == ch)
 407                 {
 408                         i = m_active_channels.erase(i);
 409                         ++cnt;
 410                 } else
 411                         ++i;
 412         }
 413         ASSERT(cnt == 1);
 414         if (cnt == 1)
 415                 return 0;
 416         return -ENOENT;
 417 }
 418
 419 RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection)
 420 {
 421         connection = new eConnection((eDVBResourceManager*)this, m_channelAdded.connect(channelAdded));
 422         return 0;
 423 }
 424
 425 bool eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm)
 426 {
 427         ePtr<eDVBRegisteredFrontend> best;
 428         int bestval = 0;
 429
 430         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 431                 if (!i->m_inuse)
 432                 {
 433                         int c = i->m_frontend->isCompatibleWith(feparm);
 434                         if (c > bestval)
 435                                 bestval = c;
 436                 }
 437
 438         return bestval>0;
 439 }
 440
 441 bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore)
 442 {
 443         bool ret=true;
 444         if (m_cached_channel)
 445         {
 446                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 447                 if(channelid==cache_chan->getChannelID())
 448                         return ret;
 449         }
 450
 451                 /* first, check if a channel is already existing. */
 452 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 453         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 454         {
 455 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 456                 if (i->m_channel_id == channelid)
 457                 {
 458 //                      eDebug("found shared channel..");
 459                         return ret;
 460                 }
 461         }
 462
 463         int *decremented_cached_channel_fe_usecount=NULL,
 464                 *decremented_fe_usecount=NULL;
 465
 466         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 467         {
 468 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 469                 if (i->m_channel_id == ignore)
 470                 {
 471                         eDVBChannel *channel = (eDVBChannel*) &(*i->m_channel);
 472                         if (channel == &(*m_cached_channel) ? channel->getUseCount() == 2 : channel->getUseCount() == 1)  // channel only used once..
 473                         {
 474                                 ePtr<iDVBFrontend> fe;
 475                                 if (!i->m_channel->getFrontend(fe))
 476                                 {
 477                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
 478                                         {
 479                                                 if ( &(*fe) == &(*ii->m_frontend) )
 480                                                 {
 481                                                         --ii->m_inuse;
 482                                                         decremented_fe_usecount = &ii->m_inuse;
 483                                                         if (channel == &(*m_cached_channel))
 484                                                                 decremented_cached_channel_fe_usecount = decremented_fe_usecount;
 485                                                         break;
 486                                                 }
 487                                         }
 488                                 }
 489                         }
 490                         break;
 491                 }
 492         }
 493
 494         if (!decremented_cached_channel_fe_usecount)
 495         {
 496                 if (m_cached_channel)
 497                 {
 498                         eDVBChannel *channel = (eDVBChannel*) &(*m_cached_channel);
 499                         if (channel->getUseCount() == 1)
 500                         {
 501                                 ePtr<iDVBFrontend> fe;
 502                                 if (!channel->getFrontend(fe))
 503                                 {
 504                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
 505                                         {
 506                                                 if ( &(*fe) == &(*ii->m_frontend) )
 507                                                 {
 508                                                         --ii->m_inuse;
 509                                                         decremented_cached_channel_fe_usecount = &ii->m_inuse;
 510                                                         break;
 511                                                 }
 512                                         }
 513                                 }
 514                         }
 515                 }
 516         }
 517         else
 518                 decremented_cached_channel_fe_usecount=NULL;
 519
 520         ePtr<iDVBFrontendParameters> feparm;
 521
 522         if (!m_list)
 523         {
 524                 eDebug("no channel list set!");
 525                 ret = false;
 526                 goto error;
 527         }
 528
 529         if (m_list->getChannelFrontendData(channelid, feparm))
 530         {
 531                 eDebug("channel not found!");
 532                 ret = false;
 533                 goto error;
 534         }
 535
 536         ret = canAllocateFrontend(feparm);
 537
 538 error:
 539         if (decremented_fe_usecount)
 540                 ++(*decremented_fe_usecount);
 541         if (decremented_cached_channel_fe_usecount)
 542                 ++(*decremented_cached_channel_fe_usecount);
 543
 544         return ret;
 545 }
 546
 547 DEFINE_REF(eDVBChannel);
 548
 549 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
 550 {
 551         m_frontend = frontend;
 552
 553         m_pvr_thread = 0;
 554
 555         m_skipmode_n = m_skipmode_m = 0;
 556
 557         if (m_frontend)
 558                 m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
 559 }
 560
 561 eDVBChannel::~eDVBChannel()
 562 {
 563         if (m_channel_id)
 564                 m_mgr->removeChannel(this);
 565
 566         stopFile();
 567 }
 568
 569 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
 570 {
 571         int state, ourstate = 0;
 572
 573                 /* if we are already in shutdown, don't change state. */
 574         if (m_state == state_release)
 575                 return;
 576
 577         if (fe->getState(state))
 578                 return;
 579
 580         if (state == iDVBFrontend::stateLock)
 581         {
 582                 eDebug("OURSTATE: ok");
 583                 ourstate = state_ok;
 584         } else if (state == iDVBFrontend::stateTuning)
 585         {
 586                 eDebug("OURSTATE: tuning");
 587                 ourstate = state_tuning;
 588         } else if (state == iDVBFrontend::stateLostLock)
 589         {
 590                         /* on managed channels, we try to retune in order to re-acquire lock. */
 591                 if (m_feparm)
 592                 {
 593                         eDebug("OURSTATE: lost lock, trying to retune");
 594                         ourstate = state_tuning;
 595                         m_frontend->get().tune(*m_feparm);
 596                 } else
 597                         /* on unmanaged channels, we don't do this. the client will do this. */
 598                 {
 599                         eDebug("OURSTATE: lost lock, unavailable now.");
 600                         ourstate = state_unavailable;
 601                 }
 602         } else if (state == iDVBFrontend::stateFailed)
 603         {
 604                 eDebug("OURSTATE: failed");
 605                 ourstate = state_failed;
 606         } else
 607                 eFatal("state unknown");
 608
 609         if (ourstate != m_state)
 610         {
 611                 m_state = ourstate;
 612                 m_stateChanged(this);
 613         }
 614 }
 615
 616 void eDVBChannel::pvrEvent(int event)
 617 {
 618         switch (event)
 619         {
 620         case eFilePushThread::evtEOF:
 621                 eDebug("eDVBChannel: End of file!");
 622                 m_event(this, evtEOF);
 623                 break;
 624         case eFilePushThread::evtUser: /* start */
 625                 eDebug("SOF");
 626                 m_event(this, evtSOF);
 627                 break;
 628         }
 629 }
 630
 631 void eDVBChannel::cueSheetEvent(int event)
 632 {
 633                 /* we need proper locking here! */
 634         eDebug("CUE SHEET EVENT %d", event);
 635
 636         switch (event)
 637         {
 638         case eCueSheet::evtSeek:
 639                 eDebug("seek.");
 640                 flushPVR(m_cue->m_decoding_demux);
 641                 break;
 642         case eCueSheet::evtSkipmode:
 643         {
 644                 m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
 645                 if (m_cue->m_skipmode_ratio)
 646                 {
 647                         int bitrate = m_tstools.calcBitrate(); /* in bits/s */
 648                         eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
 649                                         /* i agree that this might look a bit like black magic. */
 650                         m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
 651                         m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio;
 652
 653                         eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
 654
 655                         if (abs(m_skipmode_m) < abs(m_skipmode_n))
 656                         {
 657                                 eFatal("damn, something is wrong with this calculation");
 658                                 m_skipmode_n = m_skipmode_m = 0;
 659                         }
 660
 661                 } else
 662                 {
 663                         eDebug("skipmode ratio is 0, normal play");
 664                         m_skipmode_n = m_skipmode_m = 0;
 665                 }
 666                 flushPVR(m_cue->m_decoding_demux);
 667                 break;
 668         }
 669         case eCueSheet::evtSpanChanged:
 670                 eDebug("source span translation not yet supported");
 671         //      recheckCuesheetSpans();
 672                 break;
 673         }
 674 }
 675
 676         /* remember, this gets called from another thread. */
 677 void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
 678 {
 679         unsigned int max = 10*1024*1024;
 680
 681         if (!m_cue)
 682         {
 683                 eDebug("no cue sheet. forcing normal play");
 684                 start = current_offset;
 685                 size = max;
 686                 return;
 687         }
 688
 689         if (!m_cue->m_decoding_demux)
 690         {
 691                 start = current_offset;
 692                 size = max;
 693                 eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
 694                 return;
 695         }
 696
 697         if (m_skipmode_n)
 698         {
 699                 eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
 700                 max = m_skipmode_n;
 701         }
 702
 703         eDebug("getNextSourceSpan, current offset is %08llx!", current_offset);
 704
 705         if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
 706         {
 707                 eDebug("reached SOF");
 708                 m_skipmode_m = 0;
 709                 m_pvr_thread->sendEvent(eFilePushThread::evtUser);
 710         }
 711
 712         current_offset += m_skipmode_m;
 713
 714         while (!m_cue->m_seek_requests.empty())
 715         {
 716                 std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
 717                 m_cue->m_seek_requests.pop_front();
 718                 int relative = seek.first;
 719                 pts_t pts = seek.second;
 720
 721                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
 722
 723                 if (bitrate == -1)
 724                         continue;
 725
 726                 if (relative)
 727                 {
 728                         pts_t now;
 729                                         /* we're using the decoder's timestamp here. this
 730                                            won't work for radio (ouch). */
 731                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
 732                         {
 733                                 eDebug("seekTo: getCurrentPosition failed!");
 734                                 continue;
 735                         }
 736                         pts += now;
 737                 }
 738
 739                 if (pts < 0)
 740                         pts = 0;
 741
 742                 off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
 743
 744                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
 745                 current_offset = offset;
 746         }
 747
 748         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
 749         {
 750                 if ((current_offset >= i->first) && (current_offset < i->second))
 751                 {
 752                         start = current_offset;
 753                         size = i->second - current_offset;
 754                         if (size > max)
 755                                 size = max;
 756                         eDebug("HIT, %lld < %lld < %lld", i->first, current_offset, i->second);
 757                         return;
 758                 }
 759                 if (current_offset < i->first)
 760                 {
 761                         start = i->first;
 762                         size = i->second - i->first;
 763                         if (size > max)
 764                                 size = max;
 765                         eDebug("skip");
 766                         return;
 767                 }
 768         }
 769
 770         start = current_offset;
 771         size = max;
 772         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
 773
 774         if (size < 4096)
 775                 eFatal("blub");
 776         return;
 777 }
 778
 779 void eDVBChannel::AddUse()
 780 {
 781         ++m_use_count;
 782 }
 783
 784 void eDVBChannel::ReleaseUse()
 785 {
 786         if (!--m_use_count)
 787         {
 788                 m_state = state_release;
 789                 m_stateChanged(this);
 790         }
 791 }
 792
 793 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
 794 {
 795         if (m_channel_id)
 796                 m_mgr->removeChannel(this);
 797
 798         if (!channelid)
 799                 return 0;
 800
 801         if (!m_frontend)
 802         {
 803                 eDebug("no frontend to tune!");
 804                 return -ENODEV;
 805         }
 806
 807         m_channel_id = channelid;
 808         m_mgr->addChannel(channelid, this);
 809         m_state = state_tuning;
 810                         /* if tuning fails, shutdown the channel immediately. */
 811         int res;
 812         res = m_frontend->get().tune(*feparm);
 813         m_feparm = feparm;
 814
 815         if (res)
 816         {
 817                 m_state = state_release;
 818                 m_stateChanged(this);
 819                 return res;
 820         }
 821
 822         return 0;
 823 }
 824
 825 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
 826 {
 827         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
 828         return 0;
 829 }
 830
 831 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
 832 {
 833         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
 834         return 0;
 835 }
 836
 837 RESULT eDVBChannel::getState(int &state)
 838 {
 839         state = m_state;
 840         return 0;
 841 }
 842
 843 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
 844 {
 845         return -1;
 846 }
 847
 848 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
 849 {
 850         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
 851
 852         if (!our_demux)
 853         {
 854                 demux = 0;
 855
 856                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
 857                         return -1;
 858         }
 859
 860         demux = *our_demux;
 861                 /* don't hold a reference to the decoding demux, we don't need it. */
 862         if (cap & capDecode)
 863                 our_demux = 0;
 864         return 0;
 865 }
 866
 867 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
 868 {
 869         frontend = &m_frontend->get();
 870         if (frontend)
 871                 return 0;
 872         else
 873                 return -ENODEV;
 874 }
 875
 876 RESULT eDVBChannel::playFile(const char *file)
 877 {
 878         ASSERT(!m_frontend);
 879         if (m_pvr_thread)
 880         {
 881                 m_pvr_thread->stop();
 882                 delete m_pvr_thread;
 883                 m_pvr_thread = 0;
 884         }
 885
 886         m_tstools.openFile(file);
 887
 888                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
 889                    THEN DO A REAL FIX HERE! */
 890
 891                 /* (this codepath needs to be improved anyway.) */
 892         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
 893         if (m_pvr_fd_dst < 0)
 894         {
 895                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
 896                 return -ENODEV;
 897         }
 898
 899         m_pvr_fd_src = open(file, O_RDONLY|O_LARGEFILE);
 900         if (m_pvr_fd_src < 0)
 901         {
 902                 eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
 903                 close(m_pvr_fd_dst);
 904                 return -ENOENT;
 905         }
 906
 907         m_state = state_ok;
 908         m_stateChanged(this);
 909
 910         m_pvr_thread = new eFilePushThread();
 911         m_pvr_thread->enablePVRCommit(1);
 912         m_pvr_thread->setScatterGather(this);
 913
 914         m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
 915         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
 916
 917         return 0;
 918 }
 919
 920 void eDVBChannel::stopFile()
 921 {
 922         if (m_pvr_thread)
 923         {
 924                 m_pvr_thread->stop();
 925                 ::close(m_pvr_fd_src);
 926                 ::close(m_pvr_fd_dst);
 927                 delete m_pvr_thread;
 928                 m_pvr_thread = 0;
 929         }
 930 }
 931
 932 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
 933 {
 934         m_conn_cueSheetEvent = 0;
 935         m_cue = cuesheet;
 936         if (m_cue)
 937                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
 938 }
 939
 940 RESULT eDVBChannel::getLength(pts_t &len)
 941 {
 942         return m_tstools.calcLen(len);
 943 }
 944
 945 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
 946 {
 947         if (!decoding_demux)
 948                 return -1;
 949
 950         off_t begin = 0;
 951                 /* getPTS for offset 0 is cached, so it doesn't harm. */
 952         int r = m_tstools.getPTS(begin, pos);
 953         if (r)
 954         {
 955                 eDebug("tstools getpts(0) failed!");
 956                 return r;
 957         }
 958
 959         pts_t now;
 960
 961                         /* TODO: this is a gross hack. */
 962         r = decoding_demux->getSTC(now, mode ? 128 : 0);
 963
 964         if (r)
 965         {
 966                 eDebug("demux getSTC failed");
 967                 return -1;
 968         }
 969
 970 //      eDebug("STC: %08llx PTS: %08llx, diff %lld", now, pos, now - pos);
 971                 /* when we are less than 10 seconds before the start, return 0. */
 972                 /* (we're just waiting for the timespam to start) */
 973         if ((now < pos) && ((pos - now) < 90000 * 10))
 974         {
 975                 pos = 0;
 976                 return 0;
 977         }
 978
 979         if (now < pos) /* wrap around */
 980                 pos = now + ((pts_t)1)<<33 - pos;
 981         else
 982                 pos = now - pos;
 983
 984         return 0;
 985 }
 986
 987 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
 988 {
 989                         /* when seeking, we have to ensure that all buffers are flushed.
 990                            there are basically 3 buffers:
 991                            a.) the filepush's internal buffer
 992                            b.) the PVR buffer (before demux)
 993                            c.) the ratebuffer (after demux)
 994
 995                            it's important to clear them in the correct order, otherwise
 996                            the ratebuffer (for example) would immediately refill from
 997                            the not-yet-flushed PVR buffer.
 998                         */
 999
1000         m_pvr_thread->pause();
1001                 /* flush internal filepush buffer */
1002         m_pvr_thread->flush();
1003                 /* HACK: flush PVR buffer */
1004         ::ioctl(m_pvr_fd_dst, 0);
1005
1006                 /* flush ratebuffers (video, audio) */
1007         if (decoding_demux)
1008                 decoding_demux->flush();
1009
1010                 /* demux will also flush all decoder.. */
1011                 /* resume will re-query the SG */
1012         m_pvr_thread->resume();
1013 }
1014
1015 DEFINE_REF(eCueSheet);
1016
1017 eCueSheet::eCueSheet()
1018 {
1019         m_skipmode_ratio = 0;
1020 }
1021
1022 void eCueSheet::seekTo(int relative, const pts_t &pts)
1023 {
1024         m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1025         m_event(evtSeek);
1026 }
1027
1028 void eCueSheet::clear()
1029 {
1030         m_spans.clear();
1031 }
1032
1033 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1034 {
1035         m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1036         m_event(evtSpanChanged);
1037 }
1038
1039 void eCueSheet::setSkipmode(const pts_t &ratio)
1040 {
1041         m_skipmode_ratio = ratio;
1042         m_event(evtSkipmode);
1043 }
1044
1045 void eCueSheet::setDecodingDemux(iDVBDemux *demux)
1046 {
1047         m_decoding_demux = demux;
1048 }
1049
1050 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1051 {
1052         connection = new eConnection(this, m_event.connect(event));
1053         return 0;
1054 }