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         :m_releaseCachedChannelTimer(eApp)
  47 {
  48         avail = 1;
  49         busy = 0;
  50         m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
  51         if (!instance)
  52                 instance = this;
  53
  54                 /* search available adapters... */
  55
  56                 // add linux devices
  57
  58         int num_adapter = 0;
  59         while (eDVBAdapterLinux::exist(num_adapter))
  60         {
  61                 addAdapter(new eDVBAdapterLinux(num_adapter));
  62                 num_adapter++;
  63         }
  64
  65         eDebug("found %d adapter, %d frontends and %d demux",
  66                 m_adapter.size(), m_frontend.size(), m_demux.size());
  67
  68         CONNECT(m_releaseCachedChannelTimer.timeout, eDVBResourceManager::releaseCachedChannel);
  69 }
  70
  71
  72 DEFINE_REF(eDVBAdapterLinux);
  73 eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
  74 {
  75                 // scan frontends
  76         int num_fe = 0;
  77
  78         eDebug("scanning for frontends..");
  79         while (1)
  80         {
  81                 struct stat s;
  82                 char filename[128];
  83 #if HAVE_DVB_API_VERSION < 3
  84                 sprintf(filename, "/dev/dvb/card%d/frontend%d", m_nr, num_fe);
  85 #else
  86                 sprintf(filename, "/dev/dvb/adapter%d/frontend%d", m_nr, num_fe);
  87 #endif
  88                 if (stat(filename, &s))
  89                         break;
  90                 ePtr<eDVBFrontend> fe;
  91
  92                 int ok = 0;
  93                 fe = new eDVBFrontend(m_nr, num_fe, ok);
  94                 if (ok)
  95                         m_frontend.push_back(fe);
  96                 ++num_fe;
  97         }
  98
  99                 // scan demux
 100         int num_demux = 0;
 101         while (1)
 102         {
 103                 struct stat s;
 104                 char filename[128];
 105 #if HAVE_DVB_API_VERSION < 3
 106                 sprintf(filename, "/dev/dvb/card%d/demux%d", m_nr, num_demux);
 107 #else
 108                 sprintf(filename, "/dev/dvb/adapter%d/demux%d", m_nr, num_demux);
 109 #endif
 110                 if (stat(filename, &s))
 111                         break;
 112                 ePtr<eDVBDemux> demux;
 113
 114                 demux = new eDVBDemux(m_nr, num_demux);
 115                 m_demux.push_back(demux);
 116
 117                 ++num_demux;
 118         }
 119 }
 120
 121 int eDVBAdapterLinux::getNumDemux()
 122 {
 123         return m_demux.size();
 124 }
 125
 126 RESULT eDVBAdapterLinux::getDemux(ePtr<eDVBDemux> &demux, int nr)
 127 {
 128         eSmartPtrList<eDVBDemux>::iterator i(m_demux.begin());
 129         while (nr && (i != m_demux.end()))
 130         {
 131                 --nr;
 132                 ++i;
 133         }
 134
 135         if (i != m_demux.end())
 136                 demux = *i;
 137         else
 138                 return -1;
 139
 140         return 0;
 141 }
 142
 143 int eDVBAdapterLinux::getNumFrontends()
 144 {
 145         return m_frontend.size();
 146 }
 147
 148 RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr)
 149 {
 150         eSmartPtrList<eDVBFrontend>::iterator i(m_frontend.begin());
 151         while (nr && (i != m_frontend.end()))
 152         {
 153                 --nr;
 154                 ++i;
 155         }
 156
 157         if (i != m_frontend.end())
 158                 fe = *i;
 159         else
 160                 return -1;
 161
 162         return 0;
 163 }
 164
 165 int eDVBAdapterLinux::exist(int nr)
 166 {
 167         struct stat s;
 168         char filename[128];
 169 #if HAVE_DVB_API_VERSION < 3
 170         sprintf(filename, "/dev/dvb/card%d", nr);
 171 #else
 172         sprintf(filename, "/dev/dvb/adapter%d", nr);
 173 #endif
 174         if (!stat(filename, &s))
 175                 return 1;
 176         return 0;
 177 }
 178
 179 eDVBResourceManager::~eDVBResourceManager()
 180 {
 181         if (instance == this)
 182                 instance = 0;
 183 }
 184
 185 void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
 186 {
 187         int num_fe = adapter->getNumFrontends();
 188         int num_demux = adapter->getNumDemux();
 189
 190         m_adapter.push_back(adapter);
 191
 192         int i;
 193         for (i=0; i<num_demux; ++i)
 194         {
 195                 ePtr<eDVBDemux> demux;
 196                 if (!adapter->getDemux(demux, i))
 197                         m_demux.push_back(new eDVBRegisteredDemux(demux, adapter));
 198         }
 199
 200         for (i=0; i<num_fe; ++i)
 201         {
 202                 ePtr<eDVBFrontend> frontend;
 203
 204                 if (!adapter->getFrontend(frontend, i))
 205                 {
 206                         frontend->setSEC(m_sec);
 207                         m_frontend.push_back(new eDVBRegisteredFrontend(frontend, adapter));
 208                 }
 209         }
 210 }
 211
 212 RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm)
 213 {
 214         ePtr<eDVBRegisteredFrontend> best;
 215         int bestval = 0;
 216
 217         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 218                 if (!i->m_inuse)
 219                 {
 220                         int c = i->m_frontend->isCompatibleWith(feparm);
 221                         if (c > bestval)
 222                         {
 223                                 bestval = c;
 224                                 best = i;
 225                         }
 226                 }
 227
 228         if (best)
 229         {
 230                 fe = new eDVBAllocatedFrontend(best);
 231                 return 0;
 232         }
 233
 234         fe = 0;
 235
 236         return -1;
 237 }
 238
 239 RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int nr)
 240 {
 241         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i, --nr)
 242                 if ((!nr) && !i->m_inuse)
 243                 {
 244                         fe = new eDVBAllocatedFrontend(i);
 245                         return 0;
 246                 }
 247
 248         fe = 0;
 249         return -1;
 250 }
 251
 252 RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
 253 {
 254                 /* find first unused demux which is on same adapter as frontend (or any, if PVR)
 255                    never use the first one unless we need a decoding demux. */
 256
 257         eDebug("allocate demux");
 258         eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
 259
 260         if (i == m_demux.end())
 261                 return -1;
 262
 263         int n=0;
 264                 /* FIXME: hardware demux policy */
 265         if (!(cap & iDVBChannel::capDecode))
 266                 ++i, ++n;
 267
 268         for (; i != m_demux.end(); ++i, ++n)
 269                 if ((!i->m_inuse) && ((!fe) || (i->m_adapter == fe->m_adapter)))
 270                 {
 271                         if ((cap & iDVBChannel::capDecode) && n)
 272                                 continue;
 273
 274                         demux = new eDVBAllocatedDemux(i);
 275                         if (fe)
 276                                 demux->get().setSourceFrontend(fe->m_frontend->getID());
 277                         else
 278                                 demux->get().setSourcePVR(0);
 279                         return 0;
 280                 }
 281         eDebug("demux not found");
 282         return -1;
 283 }
 284
 285 RESULT eDVBResourceManager::setChannelList(iDVBChannelList *list)
 286 {
 287         m_list = list;
 288         return 0;
 289 }
 290
 291 RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
 292 {
 293         list = m_list;
 294         if (list)
 295                 return 0;
 296         else
 297                 return -ENOENT;
 298 }
 299
 300 RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel)
 301 {
 302                 /* first, check if a channel is already existing. */
 303
 304         if (m_cached_channel)
 305         {
 306                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 307                 if(channelid==cache_chan->getChannelID())
 308                 {
 309                         eDebug("use cached_channel");
 310                         channel = m_cached_channel;
 311                         return 0;
 312                 }
 313                 m_cached_channel_state_changed_conn.disconnect();
 314                 m_cached_channel=0;
 315                 m_releaseCachedChannelTimer.stop();
 316         }
 317
 318 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 319         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 320         {
 321 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 322                 if (i->m_channel_id == channelid)
 323                 {
 324 //                      eDebug("found shared channel..");
 325                         channel = i->m_channel;
 326                         return 0;
 327                 }
 328         }
 329
 330         /* no currently available channel is tuned to this channelid. create a new one, if possible. */
 331
 332         if (!m_list)
 333         {
 334                 eDebug("no channel list set!");
 335                 return -ENOENT;
 336         }
 337
 338         ePtr<iDVBFrontendParameters> feparm;
 339         if (m_list->getChannelFrontendData(channelid, feparm))
 340         {
 341                 eDebug("channel not found!");
 342                 return -ENOENT;
 343         }
 344
 345         /* allocate a frontend. */
 346
 347         ePtr<eDVBAllocatedFrontend> fe;
 348
 349         if (allocateFrontend(fe, feparm))
 350                 return errNoFrontend;
 351
 352         RESULT res;
 353         ePtr<eDVBChannel> ch;
 354         ch = new eDVBChannel(this, fe);
 355
 356         res = ch->setChannel(channelid, feparm);
 357         if (res)
 358         {
 359                 channel = 0;
 360                 return errChidNotFound;
 361         }
 362         m_cached_channel = channel = ch;
 363         m_cached_channel_state_changed_conn =
 364                 CONNECT(ch->m_stateChanged,eDVBResourceManager::DVBChannelStateChanged);
 365
 366         return 0;
 367 }
 368
 369 void eDVBResourceManager::DVBChannelStateChanged(iDVBChannel *chan)
 370 {
 371         int state=0;
 372         chan->getState(state);
 373         switch (state)
 374         {
 375                 case iDVBChannel::state_release:
 376                 case iDVBChannel::state_ok:
 377                 {
 378                         eDebug("stop release channel timer");
 379                         m_releaseCachedChannelTimer.stop();
 380                         break;
 381                 }
 382                 case iDVBChannel::state_last_instance:
 383                 {
 384                         eDebug("start release channel timer");
 385                         m_releaseCachedChannelTimer.start(3000, true);
 386                         break;
 387                 }
 388                 default: // ignore all other events
 389                         break;
 390         }
 391 }
 392
 393 void eDVBResourceManager::releaseCachedChannel()
 394 {
 395         eDebug("release cached channel (timer timeout)");
 396         m_cached_channel=0;
 397 }
 398
 399 RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
 400 {
 401         ePtr<eDVBAllocatedFrontend> fe;
 402
 403         if (m_cached_channel)
 404         {
 405                 m_cached_channel_state_changed_conn.disconnect();
 406                 m_cached_channel=0;
 407                 m_releaseCachedChannelTimer.stop();
 408         }
 409
 410         if (allocateFrontendByIndex(fe, frontend_index))
 411                 return errNoFrontend;
 412
 413         eDVBChannel *ch;
 414         ch = new eDVBChannel(this, fe);
 415
 416         channel = ch;
 417         return 0;
 418 }
 419
 420
 421 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 422 {
 423         ePtr<eDVBAllocatedDemux> demux;
 424
 425         eDVBChannel *ch;
 426         ch = new eDVBChannel(this, 0);
 427
 428         channel = ch;
 429         return 0;
 430 }
 431
 432 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
 433 {
 434         m_active_channels.push_back(active_channel(chid, ch));
 435         /* emit */ m_channelAdded(ch);
 436         return 0;
 437 }
 438
 439 RESULT eDVBResourceManager::removeChannel(eDVBChannel *ch)
 440 {
 441         int cnt = 0;
 442         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end();)
 443         {
 444                 if (i->m_channel == ch)
 445                 {
 446                         i = m_active_channels.erase(i);
 447                         ++cnt;
 448                 } else
 449                         ++i;
 450         }
 451         ASSERT(cnt == 1);
 452         if (cnt == 1)
 453                 return 0;
 454         return -ENOENT;
 455 }
 456
 457 RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection)
 458 {
 459         connection = new eConnection((eDVBResourceManager*)this, m_channelAdded.connect(channelAdded));
 460         return 0;
 461 }
 462
 463 bool eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm)
 464 {
 465         ePtr<eDVBRegisteredFrontend> best;
 466         int bestval = 0;
 467
 468         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 469                 if (!i->m_inuse)
 470                 {
 471                         int c = i->m_frontend->isCompatibleWith(feparm);
 472                         if (c > bestval)
 473                                 bestval = c;
 474                 }
 475
 476         return bestval>0;
 477 }
 478
 479 bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore)
 480 {
 481         bool ret=true;
 482         if (m_cached_channel)
 483         {
 484                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 485                 if(channelid==cache_chan->getChannelID())
 486                         return ret;
 487         }
 488
 489                 /* first, check if a channel is already existing. */
 490 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 491         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 492         {
 493 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 494                 if (i->m_channel_id == channelid)
 495                 {
 496 //                      eDebug("found shared channel..");
 497                         return ret;
 498                 }
 499         }
 500
 501         int *decremented_cached_channel_fe_usecount=NULL,
 502                 *decremented_fe_usecount=NULL;
 503
 504         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
 505         {
 506 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 507                 if (i->m_channel_id == ignore)
 508                 {
 509                         eDVBChannel *channel = (eDVBChannel*) &(*i->m_channel);
 510                         if (channel == &(*m_cached_channel) ? channel->getUseCount() == 2 : channel->getUseCount() == 1)  // channel only used once..
 511                         {
 512                                 ePtr<iDVBFrontend> fe;
 513                                 if (!i->m_channel->getFrontend(fe))
 514                                 {
 515                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
 516                                         {
 517                                                 if ( &(*fe) == &(*ii->m_frontend) )
 518                                                 {
 519                                                         --ii->m_inuse;
 520                                                         decremented_fe_usecount = &ii->m_inuse;
 521                                                         if (channel == &(*m_cached_channel))
 522                                                                 decremented_cached_channel_fe_usecount = decremented_fe_usecount;
 523                                                         break;
 524                                                 }
 525                                         }
 526                                 }
 527                         }
 528                         break;
 529                 }
 530         }
 531
 532         if (!decremented_cached_channel_fe_usecount)
 533         {
 534                 if (m_cached_channel)
 535                 {
 536                         eDVBChannel *channel = (eDVBChannel*) &(*m_cached_channel);
 537                         if (channel->getUseCount() == 1)
 538                         {
 539                                 ePtr<iDVBFrontend> fe;
 540                                 if (!channel->getFrontend(fe))
 541                                 {
 542                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
 543                                         {
 544                                                 if ( &(*fe) == &(*ii->m_frontend) )
 545                                                 {
 546                                                         --ii->m_inuse;
 547                                                         decremented_cached_channel_fe_usecount = &ii->m_inuse;
 548                                                         break;
 549                                                 }
 550                                         }
 551                                 }
 552                         }
 553                 }
 554         }
 555         else
 556                 decremented_cached_channel_fe_usecount=NULL;
 557
 558         ePtr<iDVBFrontendParameters> feparm;
 559
 560         if (!m_list)
 561         {
 562                 eDebug("no channel list set!");
 563                 ret = false;
 564                 goto error;
 565         }
 566
 567         if (m_list->getChannelFrontendData(channelid, feparm))
 568         {
 569                 eDebug("channel not found!");
 570                 ret = false;
 571                 goto error;
 572         }
 573
 574         ret = canAllocateFrontend(feparm);
 575
 576 error:
 577         if (decremented_fe_usecount)
 578                 ++(*decremented_fe_usecount);
 579         if (decremented_cached_channel_fe_usecount)
 580                 ++(*decremented_cached_channel_fe_usecount);
 581
 582         return ret;
 583 }
 584
 585 DEFINE_REF(eDVBChannel);
 586
 587 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
 588 {
 589         m_frontend = frontend;
 590
 591         m_pvr_thread = 0;
 592
 593         m_skipmode_n = m_skipmode_m = 0;
 594
 595         if (m_frontend)
 596                 m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
 597 }
 598
 599 eDVBChannel::~eDVBChannel()
 600 {
 601         if (m_channel_id)
 602                 m_mgr->removeChannel(this);
 603
 604         stopFile();
 605 }
 606
 607 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
 608 {
 609         int state, ourstate = 0;
 610
 611                 /* if we are already in shutdown, don't change state. */
 612         if (m_state == state_release)
 613                 return;
 614
 615         if (fe->getState(state))
 616                 return;
 617
 618         if (state == iDVBFrontend::stateLock)
 619         {
 620                 eDebug("OURSTATE: ok");
 621                 ourstate = state_ok;
 622         } else if (state == iDVBFrontend::stateTuning)
 623         {
 624                 eDebug("OURSTATE: tuning");
 625                 ourstate = state_tuning;
 626         } else if (state == iDVBFrontend::stateLostLock)
 627         {
 628                         /* on managed channels, we try to retune in order to re-acquire lock. */
 629                 if (m_feparm)
 630                 {
 631                         eDebug("OURSTATE: lost lock, trying to retune");
 632                         ourstate = state_tuning;
 633                         m_frontend->get().tune(*m_feparm);
 634                 } else
 635                         /* on unmanaged channels, we don't do this. the client will do this. */
 636                 {
 637                         eDebug("OURSTATE: lost lock, unavailable now.");
 638                         ourstate = state_unavailable;
 639                 }
 640         } else if (state == iDVBFrontend::stateFailed)
 641         {
 642                 eDebug("OURSTATE: failed");
 643                 ourstate = state_failed;
 644         } else
 645                 eFatal("state unknown");
 646
 647         if (ourstate != m_state)
 648         {
 649                 m_state = ourstate;
 650                 m_stateChanged(this);
 651         }
 652 }
 653
 654 void eDVBChannel::pvrEvent(int event)
 655 {
 656         switch (event)
 657         {
 658         case eFilePushThread::evtEOF:
 659                 eDebug("eDVBChannel: End of file!");
 660                 m_event(this, evtEOF);
 661                 break;
 662         case eFilePushThread::evtUser: /* start */
 663                 eDebug("SOF");
 664                 m_event(this, evtSOF);
 665                 break;
 666         }
 667 }
 668
 669 void eDVBChannel::cueSheetEvent(int event)
 670 {
 671         switch (event)
 672         {
 673         case eCueSheet::evtSeek:
 674                 eDebug("seek.");
 675                 flushPVR(m_cue->m_decoding_demux);
 676                 break;
 677         case eCueSheet::evtSkipmode:
 678         {
 679                 {
 680                         eSingleLocker l(m_cue->m_lock);
 681                         m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
 682                         if (m_cue->m_skipmode_ratio)
 683                         {
 684                                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
 685                                 eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
 686                                                 /* i agree that this might look a bit like black magic. */
 687                                 m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
 688                                 m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio / 8;
 689
 690                                 if (m_cue->m_skipmode_ratio < 0)
 691                                         m_skipmode_m -= m_skipmode_n;
 692
 693                                 eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
 694
 695                                 if (abs(m_skipmode_m) < abs(m_skipmode_n))
 696                                 {
 697                                         eWarning("something is wrong with this calculation");
 698                                         m_skipmode_n = m_skipmode_m = 0;
 699                                 }
 700
 701                         } else
 702                         {
 703                                 eDebug("skipmode ratio is 0, normal play");
 704                                 m_skipmode_n = m_skipmode_m = 0;
 705                         }
 706                 }
 707                 flushPVR(m_cue->m_decoding_demux);
 708                 break;
 709         }
 710         case eCueSheet::evtSpanChanged:
 711                 eDebug("source span translation not yet supported");
 712         //      recheckCuesheetSpans();
 713                 break;
 714         }
 715 }
 716
 717         /* remember, this gets called from another thread. */
 718 void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
 719 {
 720         unsigned int max = 10*1024*1024;
 721
 722         if (!m_cue)
 723         {
 724                 eDebug("no cue sheet. forcing normal play");
 725                 start = current_offset;
 726                 size = max;
 727                 return;
 728         }
 729
 730         eSingleLocker l(m_cue->m_lock);
 731
 732         if (!m_cue->m_decoding_demux)
 733         {
 734                 start = current_offset;
 735                 size = max;
 736                 eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
 737                 return;
 738         }
 739
 740         if (m_skipmode_n)
 741         {
 742                 eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
 743                 max = m_skipmode_n;
 744         }
 745
 746         eDebug("getNextSourceSpan, current offset is %08llx!", current_offset);
 747
 748         if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
 749         {
 750                 eDebug("reached SOF");
 751                 m_skipmode_m = 0;
 752                 m_pvr_thread->sendEvent(eFilePushThread::evtUser);
 753         }
 754
 755         current_offset += m_skipmode_m;
 756
 757         while (!m_cue->m_seek_requests.empty())
 758         {
 759                 std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
 760                 m_cue->m_seek_requests.pop_front();
 761                 int relative = seek.first;
 762                 pts_t pts = seek.second;
 763
 764                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
 765
 766                 if (bitrate == -1)
 767                         continue;
 768
 769                 if (relative)
 770                 {
 771                         pts_t now;
 772                         if (!m_cue->m_decoder)
 773                         {
 774                                 eDebug("no decoder - can't seek relative");
 775                                 continue;
 776                         }
 777                         if (m_cue->m_decoder->getPTS(0, now))
 778                         {
 779                                 eDebug("decoder getPTS failed, can't seek relative");
 780                                 continue;
 781                         }
 782                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
 783                         {
 784                                 eDebug("seekTo: getCurrentPosition failed!");
 785                                 continue;
 786                         }
 787                         pts += now;
 788                 }
 789
 790                 if (pts < 0)
 791                         pts = 0;
 792
 793                 off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
 794
 795                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
 796                 current_offset = offset;
 797         }
 798
 799         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
 800         {
 801                 if ((current_offset >= i->first) && (current_offset < i->second))
 802                 {
 803                         start = current_offset;
 804                         size = i->second - current_offset;
 805                         if (size > max)
 806                                 size = max;
 807                         eDebug("HIT, %lld < %lld < %lld", i->first, current_offset, i->second);
 808                         return;
 809                 }
 810                 if (current_offset < i->first)
 811                 {
 812                         start = i->first;
 813                         size = i->second - i->first;
 814                         if (size > max)
 815                                 size = max;
 816                         eDebug("skip");
 817                         return;
 818                 }
 819         }
 820
 821         start = current_offset;
 822         size = max;
 823         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
 824
 825         if (size < 4096)
 826                 eFatal("blub");
 827         return;
 828 }
 829
 830 void eDVBChannel::AddUse()
 831 {
 832         if (++m_use_count > 1 && m_state == state_last_instance)
 833         {
 834                 m_state = state_ok;
 835                 m_stateChanged(this);
 836         }
 837 }
 838
 839 void eDVBChannel::ReleaseUse()
 840 {
 841         if (!--m_use_count)
 842         {
 843                 m_state = state_release;
 844                 m_stateChanged(this);
 845         }
 846         else if (m_use_count == 1)
 847         {
 848                 m_state = state_last_instance;
 849                 m_stateChanged(this);
 850         }
 851 }
 852
 853 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
 854 {
 855         if (m_channel_id)
 856                 m_mgr->removeChannel(this);
 857
 858         if (!channelid)
 859                 return 0;
 860
 861         if (!m_frontend)
 862         {
 863                 eDebug("no frontend to tune!");
 864                 return -ENODEV;
 865         }
 866
 867         m_channel_id = channelid;
 868         m_mgr->addChannel(channelid, this);
 869         m_state = state_tuning;
 870                         /* if tuning fails, shutdown the channel immediately. */
 871         int res;
 872         res = m_frontend->get().tune(*feparm);
 873         m_feparm = feparm;
 874
 875         if (res)
 876         {
 877                 m_state = state_release;
 878                 m_stateChanged(this);
 879                 return res;
 880         }
 881
 882         return 0;
 883 }
 884
 885 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
 886 {
 887         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
 888         return 0;
 889 }
 890
 891 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
 892 {
 893         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
 894         return 0;
 895 }
 896
 897 RESULT eDVBChannel::getState(int &state)
 898 {
 899         state = m_state;
 900         return 0;
 901 }
 902
 903 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
 904 {
 905         return -1;
 906 }
 907
 908 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
 909 {
 910         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
 911
 912         if (!our_demux)
 913         {
 914                 demux = 0;
 915
 916                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
 917                         return -1;
 918         }
 919
 920         demux = *our_demux;
 921                 /* don't hold a reference to the decoding demux, we don't need it. */
 922         if (cap & capDecode)
 923                 our_demux = 0;
 924         return 0;
 925 }
 926
 927 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
 928 {
 929         frontend = &m_frontend->get();
 930         if (frontend)
 931                 return 0;
 932         else
 933                 return -ENODEV;
 934 }
 935
 936 RESULT eDVBChannel::playFile(const char *file)
 937 {
 938         ASSERT(!m_frontend);
 939         if (m_pvr_thread)
 940         {
 941                 m_pvr_thread->stop();
 942                 delete m_pvr_thread;
 943                 m_pvr_thread = 0;
 944         }
 945
 946         m_tstools.openFile(file);
 947
 948                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
 949                    THEN DO A REAL FIX HERE! */
 950
 951                 /* (this codepath needs to be improved anyway.) */
 952         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
 953         if (m_pvr_fd_dst < 0)
 954         {
 955                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
 956                 return -ENODEV;
 957         }
 958
 959         m_pvr_fd_src = open(file, O_RDONLY|O_LARGEFILE);
 960         if (m_pvr_fd_src < 0)
 961         {
 962                 eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
 963                 close(m_pvr_fd_dst);
 964                 return -ENOENT;
 965         }
 966
 967         m_state = state_ok;
 968         m_stateChanged(this);
 969
 970         m_pvr_thread = new eFilePushThread();
 971         m_pvr_thread->enablePVRCommit(1);
 972         m_pvr_thread->setScatterGather(this);
 973
 974         m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
 975         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
 976
 977         return 0;
 978 }
 979
 980 void eDVBChannel::stopFile()
 981 {
 982         if (m_pvr_thread)
 983         {
 984                 m_pvr_thread->stop();
 985                 ::close(m_pvr_fd_src);
 986                 ::close(m_pvr_fd_dst);
 987                 delete m_pvr_thread;
 988                 m_pvr_thread = 0;
 989         }
 990 }
 991
 992 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
 993 {
 994         m_conn_cueSheetEvent = 0;
 995         m_cue = cuesheet;
 996         if (m_cue)
 997                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
 998 }
 999
1000 RESULT eDVBChannel::getLength(pts_t &len)
1001 {
1002         return m_tstools.calcLen(len);
1003 }
1004
1005 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
1006 {
1007         if (!decoding_demux)
1008                 return -1;
1009
1010         pts_t now;
1011
1012         int r;
1013
1014         if (mode == 0) /* demux */
1015         {
1016                 r = decoding_demux->getSTC(now, 0);
1017                 if (r)
1018                 {
1019                         eDebug("demux getSTC failed");
1020                         return -1;
1021                 }
1022         } else
1023                 now = pos; /* fixup supplied */
1024
1025         off_t off = 0; /* TODO: fixme */
1026         r = m_tstools.fixupPTS(off, now);
1027         if (r)
1028         {
1029                 eDebug("fixup PTS failed");
1030                 return -1;
1031         }
1032
1033         pos = now;
1034
1035         return 0;
1036 }
1037
1038 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
1039 {
1040                         /* when seeking, we have to ensure that all buffers are flushed.
1041                            there are basically 3 buffers:
1042                            a.) the filepush's internal buffer
1043                            b.) the PVR buffer (before demux)
1044                            c.) the ratebuffer (after demux)
1045
1046                            it's important to clear them in the correct order, otherwise
1047                            the ratebuffer (for example) would immediately refill from
1048                            the not-yet-flushed PVR buffer.
1049                         */
1050
1051         m_pvr_thread->pause();
1052                 /* flush internal filepush buffer */
1053         m_pvr_thread->flush();
1054                 /* HACK: flush PVR buffer */
1055         ::ioctl(m_pvr_fd_dst, 0);
1056
1057                 /* flush ratebuffers (video, audio) */
1058         if (decoding_demux)
1059                 decoding_demux->flush();
1060
1061                 /* demux will also flush all decoder.. */
1062                 /* resume will re-query the SG */
1063         m_pvr_thread->resume();
1064 }
1065
1066 DEFINE_REF(eCueSheet);
1067
1068 eCueSheet::eCueSheet()
1069 {
1070         m_skipmode_ratio = 0;
1071 }
1072
1073 void eCueSheet::seekTo(int relative, const pts_t &pts)
1074 {
1075         {
1076                 eSingleLock l(m_lock);
1077                 m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1078         }
1079         m_event(evtSeek);
1080 }
1081
1082 void eCueSheet::clear()
1083 {
1084         eSingleLock l(m_lock);
1085         m_spans.clear();
1086 }
1087
1088 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1089 {
1090         {
1091                 eSingleLock l(m_lock);
1092                 m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1093         }
1094         m_event(evtSpanChanged);
1095 }
1096
1097 void eCueSheet::setSkipmode(const pts_t &ratio)
1098 {
1099         {
1100                 eSingleLock l(m_lock);
1101                 m_skipmode_ratio = ratio;
1102         }
1103         m_event(evtSkipmode);
1104 }
1105
1106 void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
1107 {
1108         m_decoding_demux = demux;
1109         m_decoder = decoder;
1110 }
1111
1112 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1113 {
1114         connection = new eConnection(this, m_event.connect(event));
1115         return 0;
1116 }