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/pmt.h>
   6 #include <lib/dvb/sec.h>
   7 #include <lib/dvb/specs.h>
   8
   9 #include <errno.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12 #include <unistd.h>
  13 #include <fcntl.h>
  14 #include <sys/ioctl.h>
  15
  16 DEFINE_REF(eDVBRegisteredFrontend);
  17 DEFINE_REF(eDVBRegisteredDemux);
  18
  19 DEFINE_REF(eDVBAllocatedFrontend);
  20
  21 eDVBAllocatedFrontend::eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe): m_fe(fe)
  22 {
  23         m_fe->inc_use();
  24 }
  25
  26 eDVBAllocatedFrontend::~eDVBAllocatedFrontend()
  27 {
  28         m_fe->dec_use();
  29 }
  30
  31 DEFINE_REF(eDVBAllocatedDemux);
  32
  33 eDVBAllocatedDemux::eDVBAllocatedDemux(eDVBRegisteredDemux *demux): m_demux(demux)
  34 {
  35         m_demux->m_inuse++;
  36 }
  37
  38 eDVBAllocatedDemux::~eDVBAllocatedDemux()
  39 {
  40         --m_demux->m_inuse;
  41 }
  42
  43 DEFINE_REF(eDVBResourceManager);
  44
  45 eDVBResourceManager *eDVBResourceManager::instance;
  46
  47 RESULT eDVBResourceManager::getInstance(ePtr<eDVBResourceManager> &ptr)
  48 {
  49         if (instance)
  50         {
  51                 ptr = instance;
  52                 return 0;
  53         }
  54         return -1;
  55 }
  56
  57 ePtr<eDVBResourceManager> NewResourceManagerPtr(void)
  58 {
  59         ePtr<eDVBResourceManager> ptr;
  60         eDVBResourceManager::getInstance(ptr);
  61         return ptr;
  62 }
  63
  64 eDVBResourceManager::eDVBResourceManager()
  65         :m_releaseCachedChannelTimer(eTimer::create(eApp))
  66 {
  67         avail = 1;
  68         busy = 0;
  69         m_sec = new eDVBSatelliteEquipmentControl(m_frontend, m_simulate_frontend);
  70
  71         if (!instance)
  72                 instance = this;
  73
  74                 /* search available adapters... */
  75
  76                 // add linux devices
  77
  78         int num_adapter = 0;
  79         while (eDVBAdapterLinux::exist(num_adapter))
  80         {
  81                 addAdapter(new eDVBAdapterLinux(num_adapter));
  82                 num_adapter++;
  83         }
  84
  85         eDebug("found %d adapter, %d frontends(%d sim) and %d demux",
  86                 m_adapter.size(), m_frontend.size(), m_simulate_frontend.size(), m_demux.size());
  87
  88         eDVBCAService::registerChannelCallback(this);
  89
  90         CONNECT(m_releaseCachedChannelTimer->timeout, eDVBResourceManager::releaseCachedChannel);
  91 }
  92
  93 void eDVBResourceManager::feStateChanged()
  94 {
  95         int mask=0;
  96         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
  97                 if (i->m_inuse)
  98                         mask |= ( 1 << i->m_frontend->getSlotID() );
  99         /* emit */ frontendUseMaskChanged(mask);
 100 }
 101
 102 DEFINE_REF(eDVBAdapterLinux);
 103 eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
 104 {
 105                 // scan frontends
 106         int num_fe = 0;
 107
 108         eDebug("scanning for frontends..");
 109         while (1)
 110         {
 111                 struct stat s;
 112                 char filename[128];
 113 #if HAVE_DVB_API_VERSION < 3
 114                 sprintf(filename, "/dev/dvb/card%d/frontend%d", m_nr, num_fe);
 115 #else
 116                 sprintf(filename, "/dev/dvb/adapter%d/frontend%d", m_nr, num_fe);
 117 #endif
 118                 if (stat(filename, &s))
 119                         break;
 120                 ePtr<eDVBFrontend> fe;
 121
 122                 {
 123                         int ok = 0;
 124                         fe = new eDVBFrontend(m_nr, num_fe, ok);
 125                         if (ok)
 126                                 m_frontend.push_back(fe);
 127                 }
 128                 {
 129                         int ok = 0;
 130                         fe = new eDVBFrontend(m_nr, num_fe, ok, true);
 131                         if (ok)
 132                                 m_simulate_frontend.push_back(fe);
 133                 }
 134                 ++num_fe;
 135         }
 136
 137                 // scan demux
 138         int num_demux = 0;
 139         while (1)
 140         {
 141                 struct stat s;
 142                 char filename[128];
 143 #if HAVE_DVB_API_VERSION < 3
 144                 sprintf(filename, "/dev/dvb/card%d/demux%d", m_nr, num_demux);
 145 #else
 146                 sprintf(filename, "/dev/dvb/adapter%d/demux%d", m_nr, num_demux);
 147 #endif
 148                 if (stat(filename, &s))
 149                         break;
 150                 ePtr<eDVBDemux> demux;
 151
 152                 demux = new eDVBDemux(m_nr, num_demux);
 153                 m_demux.push_back(demux);
 154
 155                 ++num_demux;
 156         }
 157 }
 158
 159 int eDVBAdapterLinux::getNumDemux()
 160 {
 161         return m_demux.size();
 162 }
 163
 164 RESULT eDVBAdapterLinux::getDemux(ePtr<eDVBDemux> &demux, int nr)
 165 {
 166         eSmartPtrList<eDVBDemux>::iterator i(m_demux.begin());
 167         while (nr && (i != m_demux.end()))
 168         {
 169                 --nr;
 170                 ++i;
 171         }
 172
 173         if (i != m_demux.end())
 174                 demux = *i;
 175         else
 176                 return -1;
 177
 178         return 0;
 179 }
 180
 181 int eDVBAdapterLinux::getNumFrontends()
 182 {
 183         return m_frontend.size();
 184 }
 185
 186 RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr, bool simulate)
 187 {
 188         eSmartPtrList<eDVBFrontend>::iterator i(simulate ? m_simulate_frontend.begin() : m_frontend.begin());
 189         while (nr && (i != m_frontend.end()))
 190         {
 191                 --nr;
 192                 ++i;
 193         }
 194
 195         if (i != m_frontend.end())
 196                 fe = *i;
 197         else
 198                 return -1;
 199
 200         return 0;
 201 }
 202
 203 int eDVBAdapterLinux::exist(int nr)
 204 {
 205         struct stat s;
 206         char filename[128];
 207 #if HAVE_DVB_API_VERSION < 3
 208         sprintf(filename, "/dev/dvb/card%d", nr);
 209 #else
 210         sprintf(filename, "/dev/dvb/adapter%d", nr);
 211 #endif
 212         if (!stat(filename, &s))
 213                 return 1;
 214         return 0;
 215 }
 216
 217 eDVBResourceManager::~eDVBResourceManager()
 218 {
 219         if (instance == this)
 220                 instance = 0;
 221 }
 222
 223 void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
 224 {
 225         int num_fe = adapter->getNumFrontends();
 226         int num_demux = adapter->getNumDemux();
 227
 228         m_adapter.push_back(adapter);
 229
 230         int i;
 231         for (i=0; i<num_demux; ++i)
 232         {
 233                 ePtr<eDVBDemux> demux;
 234                 if (!adapter->getDemux(demux, i))
 235                         m_demux.push_back(new eDVBRegisteredDemux(demux, adapter));
 236         }
 237
 238         ePtr<eDVBRegisteredFrontend> prev_dvbt_frontend;
 239         for (i=0; i<num_fe; ++i)
 240         {
 241                 ePtr<eDVBFrontend> frontend;
 242                 if (!adapter->getFrontend(frontend, i))
 243                 {
 244                         int frontendType=0;
 245                         frontend->getFrontendType(frontendType);
 246                         eDVBRegisteredFrontend *new_fe = new eDVBRegisteredFrontend(frontend, adapter);
 247                         CONNECT(new_fe->stateChanged, eDVBResourceManager::feStateChanged);
 248                         m_frontend.push_back(new_fe);
 249                         frontend->setSEC(m_sec);
 250                         // we must link all dvb-t frontends ( for active antenna voltage )
 251                         if (frontendType == iDVBFrontend::feTerrestrial)
 252                         {
 253                                 if (prev_dvbt_frontend)
 254                                 {
 255                                         prev_dvbt_frontend->m_frontend->setData(eDVBFrontend::LINKED_NEXT_PTR, (long)new_fe);
 256                                         frontend->setData(eDVBFrontend::LINKED_PREV_PTR, (long)&(*prev_dvbt_frontend));
 257                                 }
 258                                 prev_dvbt_frontend = new_fe;
 259                         }
 260                 }
 261         }
 262
 263         prev_dvbt_frontend = 0;
 264         for (i=0; i<num_fe; ++i)
 265         {
 266                 ePtr<eDVBFrontend> frontend;
 267                 if (!adapter->getFrontend(frontend, i, true))
 268                 {
 269                         int frontendType=0;
 270                         frontend->getFrontendType(frontendType);
 271                         eDVBRegisteredFrontend *new_fe = new eDVBRegisteredFrontend(frontend, adapter);
 272 //                      CONNECT(new_fe->stateChanged, eDVBResourceManager::feStateChanged);
 273                         m_simulate_frontend.push_back(new_fe);
 274                         frontend->setSEC(m_sec);
 275                         // we must link all dvb-t frontends ( for active antenna voltage )
 276                         if (frontendType == iDVBFrontend::feTerrestrial)
 277                         {
 278                                 if (prev_dvbt_frontend)
 279                                 {
 280                                         prev_dvbt_frontend->m_frontend->setData(eDVBFrontend::LINKED_NEXT_PTR, (long)new_fe);
 281                                         frontend->setData(eDVBFrontend::LINKED_PREV_PTR, (long)&(*prev_dvbt_frontend));
 282                                 }
 283                                 prev_dvbt_frontend = new_fe;
 284                         }
 285                 }
 286         }
 287
 288 }
 289
 290 PyObject *eDVBResourceManager::setFrontendSlotInformations(ePyObject list)
 291 {
 292         if (!PyList_Check(list))
 293         {
 294                 PyErr_SetString(PyExc_StandardError, "eDVBResourceManager::setFrontendSlotInformations argument should be a python list");
 295                 return NULL;
 296         }
 297         if ((unsigned int)PyList_Size(list) != m_frontend.size())
 298         {
 299                 char blasel[256];
 300                 sprintf(blasel, "eDVBResourceManager::setFrontendSlotInformations list size incorrect %d frontends avail, but %d entries in slotlist",
 301                         m_frontend.size(), PyList_Size(list));
 302                 PyErr_SetString(PyExc_StandardError, blasel);
 303                 return NULL;
 304         }
 305         int pos=0;
 306         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 307         {
 308                 ePyObject obj = PyList_GET_ITEM(list, pos++);
 309                 if (!i->m_frontend->setSlotInfo(obj))
 310                         return NULL;
 311         }
 312         pos=0;
 313         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_simulate_frontend.begin()); i != m_simulate_frontend.end(); ++i)
 314         {
 315                 ePyObject obj = PyList_GET_ITEM(list, pos++);
 316                 if (!i->m_frontend->setSlotInfo(obj))
 317                         return NULL;
 318         }
 319         Py_RETURN_NONE;
 320 }
 321
 322 RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm, bool simulate)
 323 {
 324         eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
 325         ePtr<eDVBRegisteredFrontend> best;
 326         int bestval = 0;
 327         int foundone = 0;
 328
 329         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(frontends.begin()); i != frontends.end(); ++i)
 330         {
 331                 int c = i->m_frontend->isCompatibleWith(feparm);
 332
 333                 if (c)  /* if we have at least one frontend which is compatible with the source, flag this. */
 334                         foundone = 1;
 335
 336                 if (!i->m_inuse)
 337                 {
 338 //                      eDebug("Slot %d, score %d", i->m_frontend->getSlotID(), c);
 339                         if (c > bestval)
 340                         {
 341                                 bestval = c;
 342                                 best = i;
 343                         }
 344                 }
 345 //              else
 346 //                      eDebug("Slot %d, score %d... but BUSY!!!!!!!!!!!", i->m_frontend->getSlotID(), c);
 347         }
 348
 349         if (best)
 350         {
 351                 fe = new eDVBAllocatedFrontend(best);
 352                 return 0;
 353         }
 354
 355         fe = 0;
 356
 357         if (foundone)
 358                 return errAllSourcesBusy;
 359         else
 360                 return errNoSourceFound;
 361 }
 362
 363 RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int slot_index)
 364 {
 365         int err = errNoSourceFound;
 366         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 367                 if (!i->m_inuse && i->m_frontend->getSlotID() == slot_index)
 368                 {
 369                         // check if another slot linked to this is in use
 370                         long tmp;
 371                         i->m_frontend->getData(eDVBFrontend::SATPOS_DEPENDS_PTR, tmp);
 372                         if ( tmp != -1 )
 373                         {
 374                                 eDVBRegisteredFrontend *satpos_depends_to_fe = (eDVBRegisteredFrontend *)tmp;
 375                                 if (satpos_depends_to_fe->m_inuse)
 376                                 {
 377                                         eDebug("another satpos depending frontend is in use.. so allocateFrontendByIndex not possible!");
 378                                         err = errAllSourcesBusy;
 379                                         goto alloc_fe_by_id_not_possible;
 380                                 }
 381                         }
 382                         else // check linked tuners
 383                         {
 384                                 i->m_frontend->getData(eDVBFrontend::LINKED_NEXT_PTR, tmp);
 385                                 while ( tmp != -1 )
 386                                 {
 387                                         eDVBRegisteredFrontend *next = (eDVBRegisteredFrontend *) tmp;
 388                                         if (next->m_inuse)
 389                                         {
 390                                                 eDebug("another linked frontend is in use.. so allocateFrontendByIndex not possible!");
 391                                                 err = errAllSourcesBusy;
 392                                                 goto alloc_fe_by_id_not_possible;
 393                                         }
 394                                         next->m_frontend->getData(eDVBFrontend::LINKED_NEXT_PTR, tmp);
 395                                 }
 396                                 i->m_frontend->getData(eDVBFrontend::LINKED_PREV_PTR, tmp);
 397                                 while ( tmp != -1 )
 398                                 {
 399                                         eDVBRegisteredFrontend *prev = (eDVBRegisteredFrontend *) tmp;
 400                                         if (prev->m_inuse)
 401                                         {
 402                                                 eDebug("another linked frontend is in use.. so allocateFrontendByIndex not possible!");
 403                                                 err = errAllSourcesBusy;
 404                                                 goto alloc_fe_by_id_not_possible;
 405                                         }
 406                                         prev->m_frontend->getData(eDVBFrontend::LINKED_PREV_PTR, tmp);
 407                                 }
 408                         }
 409                         fe = new eDVBAllocatedFrontend(i);
 410                         return 0;
 411                 }
 412 alloc_fe_by_id_not_possible:
 413         fe = 0;
 414         return err;
 415 }
 416
 417 RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
 418 {
 419                 /* find first unused demux which is on same adapter as frontend (or any, if PVR)
 420                    never use the first one unless we need a decoding demux. */
 421
 422         eDebug("allocate demux");
 423         eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
 424
 425         int n=0;
 426
 427         if (i == m_demux.end())
 428                 return -1;
 429
 430         ePtr<eDVBRegisteredDemux> unused;
 431
 432         if (m_demux.size() < 5)
 433         {
 434                 /* FIXME: hardware demux policy */
 435                 if (!(cap & iDVBChannel::capDecode))
 436                 {
 437                         if (m_demux.size() > 2)  /* assumed to be true, otherwise we have lost anyway */
 438                         {
 439                                 ++i, ++n;
 440                                 ++i, ++n;
 441                         }
 442                 }
 443
 444                 for (; i != m_demux.end(); ++i, ++n)
 445                 {
 446                         int is_decode = n < 2;
 447
 448                         int in_use = is_decode ? (i->m_demux->getRefCount() != 2) : i->m_inuse;
 449
 450                         if ((!in_use) && ((!fe) || (i->m_adapter == fe->m_adapter)))
 451                         {
 452                                 if ((cap & iDVBChannel::capDecode) && !is_decode)
 453                                         continue;
 454                                 unused = i;
 455                                 break;
 456                         }
 457                 }
 458         }
 459         else // we asume dm8000
 460         {
 461                 for (; i != m_demux.end(); ++i, ++n)
 462                 {
 463                         if (fe)
 464                         {
 465                                 if (!i->m_inuse)
 466                                 {
 467                                         if (!unused)
 468                                                 unused = i;
 469                                 }
 470                                 else if (i->m_adapter == fe->m_adapter &&
 471                                     i->m_demux->getSource() == fe->m_frontend->getDVBID())
 472                                 {
 473                                         demux = new eDVBAllocatedDemux(i);
 474                                         return 0;
 475                                 }
 476                         }
 477                         else if (n == 4) // always use demux4 for PVR (demux 4 can not descramble...)
 478                         {
 479                                 if (i->m_inuse) {
 480                                         demux = new eDVBAllocatedDemux(i);
 481                                         return 0;
 482                                 }
 483                                 unused = i;
 484                         }
 485                 }
 486         }
 487
 488         if (unused)
 489         {
 490                 demux = new eDVBAllocatedDemux(unused);
 491                 if (fe)
 492                         demux->get().setSourceFrontend(fe->m_frontend->getDVBID());
 493                 else
 494                         demux->get().setSourcePVR(0);
 495                 return 0;
 496         }
 497
 498         eDebug("demux not found");
 499         return -1;
 500 }
 501
 502 RESULT eDVBResourceManager::setChannelList(iDVBChannelList *list)
 503 {
 504         m_list = list;
 505         return 0;
 506 }
 507
 508 RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
 509 {
 510         list = m_list;
 511         if (list)
 512                 return 0;
 513         else
 514                 return -ENOENT;
 515 }
 516
 517 #define eDebugNoSimulate(x...) \
 518         do { \
 519                 if (!simulate) \
 520                         eDebug(x); \
 521         } while(0)
 522 //              else \
 523 //              { \
 524 //                      eDebugNoNewLine("SIMULATE:"); \
 525 //                      eDebug(x); \
 526 //              } \
 527
 528
 529 RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel, bool simulate)
 530 {
 531                 /* first, check if a channel is already existing. */
 532         std::list<active_channel> &active_channels = simulate ? m_active_simulate_channels : m_active_channels;
 533
 534         if (!simulate && m_cached_channel)
 535         {
 536                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 537                 if(channelid==cache_chan->getChannelID())
 538                 {
 539                         eDebug("use cached_channel");
 540                         channel = m_cached_channel;
 541                         return 0;
 542                 }
 543                 m_cached_channel_state_changed_conn.disconnect();
 544                 m_cached_channel=0;
 545                 m_releaseCachedChannelTimer->stop();
 546         }
 547
 548         eDebugNoSimulate("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 549         for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end(); ++i)
 550         {
 551                 eDebugNoSimulate("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 552                 if (i->m_channel_id == channelid)
 553                 {
 554                         eDebugNoSimulate("found shared channel..");
 555                         channel = i->m_channel;
 556                         return 0;
 557                 }
 558         }
 559
 560         /* no currently available channel is tuned to this channelid. create a new one, if possible. */
 561
 562         if (!m_list)
 563         {
 564                 eDebugNoSimulate("no channel list set!");
 565                 return errNoChannelList;
 566         }
 567
 568         ePtr<iDVBFrontendParameters> feparm;
 569         if (m_list->getChannelFrontendData(channelid, feparm))
 570         {
 571                 eDebugNoSimulate("channel not found!");
 572                 return errChannelNotInList;
 573         }
 574
 575         /* allocate a frontend. */
 576
 577         ePtr<eDVBAllocatedFrontend> fe;
 578
 579         int err = allocateFrontend(fe, feparm, simulate);
 580         if (err)
 581                 return err;
 582
 583         RESULT res;
 584         ePtr<eDVBChannel> ch = new eDVBChannel(this, fe);
 585
 586         res = ch->setChannel(channelid, feparm);
 587         if (res)
 588         {
 589                 channel = 0;
 590                 return errChidNotFound;
 591         }
 592
 593         if (simulate)
 594                 channel = ch;
 595         else
 596         {
 597                 m_cached_channel = channel = ch;
 598                 m_cached_channel_state_changed_conn =
 599                         CONNECT(ch->m_stateChanged,eDVBResourceManager::DVBChannelStateChanged);
 600         }
 601
 602         return 0;
 603 }
 604
 605 void eDVBResourceManager::DVBChannelStateChanged(iDVBChannel *chan)
 606 {
 607         int state=0;
 608         chan->getState(state);
 609         switch (state)
 610         {
 611                 case iDVBChannel::state_release:
 612                 case iDVBChannel::state_ok:
 613                 {
 614                         eDebug("stop release channel timer");
 615                         m_releaseCachedChannelTimer->stop();
 616                         break;
 617                 }
 618                 case iDVBChannel::state_last_instance:
 619                 {
 620                         eDebug("start release channel timer");
 621                         m_releaseCachedChannelTimer->start(3000, true);
 622                         break;
 623                 }
 624                 default: // ignore all other events
 625                         break;
 626         }
 627 }
 628
 629 void eDVBResourceManager::releaseCachedChannel()
 630 {
 631         eDebug("release cached channel (timer timeout)");
 632         m_cached_channel=0;
 633 }
 634
 635 RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int slot_index)
 636 {
 637         ePtr<eDVBAllocatedFrontend> fe;
 638
 639         if (m_cached_channel)
 640         {
 641                 m_cached_channel_state_changed_conn.disconnect();
 642                 m_cached_channel=0;
 643                 m_releaseCachedChannelTimer->stop();
 644         }
 645
 646         int err = allocateFrontendByIndex(fe, slot_index);
 647         if (err)
 648                 return err;
 649
 650         channel = new eDVBChannel(this, fe);
 651         return 0;
 652 }
 653
 654
 655 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 656 {
 657         ePtr<eDVBAllocatedDemux> demux;
 658
 659         if (m_cached_channel && m_releaseCachedChannelTimer->isActive())
 660         {
 661                 m_cached_channel_state_changed_conn.disconnect();
 662                 m_cached_channel=0;
 663                 m_releaseCachedChannelTimer->stop();
 664         }
 665
 666         channel = new eDVBChannel(this, 0);
 667         return 0;
 668 }
 669
 670 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
 671 {
 672         ePtr<iDVBFrontend> fe;
 673         if (!ch->getFrontend(fe))
 674         {
 675                 eDVBFrontend *frontend = (eDVBFrontend*)&(*fe);
 676                 if (frontend->is_simulate())
 677                         m_active_simulate_channels.push_back(active_channel(chid, ch));
 678                 else
 679                 {
 680                         m_active_channels.push_back(active_channel(chid, ch));
 681                         /* emit */ m_channelAdded(ch);
 682                 }
 683         }
 684         return 0;
 685 }
 686
 687 RESULT eDVBResourceManager::removeChannel(eDVBChannel *ch)
 688 {
 689         ePtr<iDVBFrontend> fe;
 690         if (!ch->getFrontend(fe))
 691         {
 692                 eDVBFrontend *frontend = (eDVBFrontend*)&(*fe);
 693                 std::list<active_channel> &active_channels = frontend->is_simulate() ? m_active_simulate_channels : m_active_channels;
 694                 int cnt = 0;
 695                 for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end();)
 696                 {
 697                         if (i->m_channel == ch)
 698                         {
 699                                 i = active_channels.erase(i);
 700                                 ++cnt;
 701                         } else
 702                                 ++i;
 703                 }
 704                 ASSERT(cnt == 1);
 705                 if (cnt == 1)
 706                         return 0;
 707         }
 708         return -ENOENT;
 709 }
 710
 711 RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection)
 712 {
 713         connection = new eConnection((eDVBResourceManager*)this, m_channelAdded.connect(channelAdded));
 714         return 0;
 715 }
 716
 717 int eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm, bool simulate)
 718 {
 719         eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
 720         ePtr<eDVBRegisteredFrontend> best;
 721         int bestval = 0;
 722
 723         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(frontends.begin()); i != frontends.end(); ++i)
 724                 if (!i->m_inuse)
 725                 {
 726                         int c = i->m_frontend->isCompatibleWith(feparm);
 727                         if (c > bestval)
 728                                 bestval = c;
 729                 }
 730         return bestval;
 731 }
 732
 733 int tuner_type_channel_default(ePtr<iDVBChannelList> &channellist, const eDVBChannelID &chid)
 734 {
 735         if (channellist)
 736         {
 737                 ePtr<iDVBFrontendParameters> feparm;
 738                 if (!channellist->getChannelFrontendData(chid, feparm))
 739                 {
 740                         int system;
 741                         if (!feparm->getSystem(system))
 742                         {
 743                                 switch(system)
 744                                 {
 745                                         case iDVBFrontend::feSatellite:
 746                                                 return 50000;
 747                                         case iDVBFrontend::feCable:
 748                                                 return 40000;
 749                                         case iDVBFrontend::feTerrestrial:
 750                                                 return 30000;
 751                                         default:
 752                                                 break;
 753                                 }
 754                         }
 755                 }
 756         }
 757         return 0;
 758 }
 759
 760 int eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore, bool simulate)
 761 {
 762         std::list<active_channel> &active_channels = simulate ? m_active_simulate_channels : m_active_channels;
 763         int ret=0;
 764         if (!simulate && m_cached_channel)
 765         {
 766                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
 767                 if(channelid==cache_chan->getChannelID())
 768                         return tuner_type_channel_default(m_list, channelid);
 769         }
 770
 771                 /* first, check if a channel is already existing. */
 772 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
 773         for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end(); ++i)
 774         {
 775 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 776                 if (i->m_channel_id == channelid)
 777                 {
 778 //                      eDebug("found shared channel..");
 779                         return tuner_type_channel_default(m_list, channelid);
 780                 }
 781         }
 782
 783         int *decremented_cached_channel_fe_usecount=NULL,
 784                 *decremented_fe_usecount=NULL;
 785
 786         for (std::list<active_channel>::iterator i(active_channels.begin()); i != active_channels.end(); ++i)
 787         {
 788                 eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
 789 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
 790                 if (i->m_channel_id == ignore)
 791                 {
 792                         eDVBChannel *channel = (eDVBChannel*) &(*i->m_channel);
 793                         // one eUsePtr<iDVBChannel> is used in eDVBServicePMTHandler
 794                         // another on eUsePtr<iDVBChannel> is used in the eDVBScan instance used in eDVBServicePMTHandler (for SDT scan)
 795                         // so we must check here if usecount is 3 (when the channel is equal to the cached channel)
 796                         // or 2 when the cached channel is not equal to the compared channel
 797                         if (channel == &(*m_cached_channel) ? channel->getUseCount() == 3 : channel->getUseCount() == 2)  // channel only used once..
 798                         {
 799                                 ePtr<iDVBFrontend> fe;
 800                                 if (!i->m_channel->getFrontend(fe))
 801                                 {
 802                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(frontends.begin()); ii != frontends.end(); ++ii)
 803                                         {
 804                                                 if ( &(*fe) == &(*ii->m_frontend) )
 805                                                 {
 806                                                         --ii->m_inuse;
 807                                                         decremented_fe_usecount = &ii->m_inuse;
 808                                                         if (channel == &(*m_cached_channel))
 809                                                                 decremented_cached_channel_fe_usecount = decremented_fe_usecount;
 810                                                         break;
 811                                                 }
 812                                         }
 813                                 }
 814                         }
 815                         break;
 816                 }
 817         }
 818
 819         if (!decremented_cached_channel_fe_usecount)
 820         {
 821                 if (m_cached_channel)
 822                 {
 823                         eDVBChannel *channel = (eDVBChannel*) &(*m_cached_channel);
 824                         if (channel->getUseCount() == 1)
 825                         {
 826                                 ePtr<iDVBFrontend> fe;
 827                                 if (!channel->getFrontend(fe))
 828                                 {
 829                                         eSmartPtrList<eDVBRegisteredFrontend> &frontends = simulate ? m_simulate_frontend : m_frontend;
 830                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(frontends.begin()); ii != frontends.end(); ++ii)
 831                                         {
 832                                                 if ( &(*fe) == &(*ii->m_frontend) )
 833                                                 {
 834                                                         --ii->m_inuse;
 835                                                         decremented_cached_channel_fe_usecount = &ii->m_inuse;
 836                                                         break;
 837                                                 }
 838                                         }
 839                                 }
 840                         }
 841                 }
 842         }
 843         else
 844                 decremented_cached_channel_fe_usecount=NULL;
 845
 846         ePtr<iDVBFrontendParameters> feparm;
 847
 848         if (!m_list)
 849         {
 850                 eDebug("no channel list set!");
 851                 goto error;
 852         }
 853
 854         if (m_list->getChannelFrontendData(channelid, feparm))
 855         {
 856                 eDebug("channel not found!");
 857                 goto error;
 858         }
 859
 860         ret = canAllocateFrontend(feparm, simulate);
 861
 862 error:
 863         if (decremented_fe_usecount)
 864                 ++(*decremented_fe_usecount);
 865         if (decremented_cached_channel_fe_usecount)
 866                 ++(*decremented_cached_channel_fe_usecount);
 867
 868         return ret;
 869 }
 870
 871 bool eDVBResourceManager::canMeasureFrontendInputPower()
 872 {
 873         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
 874         {
 875                 return i->m_frontend->readInputpower() >= 0;
 876         }
 877         return false;
 878 }
 879
 880 class eDVBChannelFilePush: public eFilePushThread
 881 {
 882 public:
 883         eDVBChannelFilePush() { setIFrameSearch(0); setTimebaseChange(0); }
 884         void setIFrameSearch(int enabled) { m_iframe_search = enabled; m_iframe_state = 0; }
 885
 886                         /* "timebase change" is for doing trickmode playback at an exact speed, even when pictures are skipped. */
 887                         /* you need to set it to 1/16 if you want 16x playback, for example. you need video master sync. */
 888         void setTimebaseChange(int ratio) { m_timebase_change = ratio; } /* 16bit fixpoint, 0 for disable */
 889 protected:
 890         int m_iframe_search, m_iframe_state, m_pid;
 891         int m_timebase_change;
 892         int filterRecordData(const unsigned char *data, int len, size_t &current_span_remaining);
 893 };
 894
 895 int eDVBChannelFilePush::filterRecordData(const unsigned char *_data, int len, size_t &current_span_remaining)
 896 {
 897 #if 0
 898         if (m_timebase_change)
 899         {
 900                 eDebug("timebase change: %d", m_timebase_change);
 901                 int offset;
 902                 for (offset = 0; offset < len; offset += 188)
 903                 {
 904                         unsigned char *pkt = (unsigned char*)_data + offset;
 905                         if (pkt[1] & 0x40) /* pusi */
 906                         {
 907                                 if (pkt[3] & 0x20) // adaption field present?
 908                                         pkt += pkt[4] + 4 + 1;  /* skip adaption field and header */
 909                                 else
 910                                         pkt += 4; /* skip header */
 911                                 if (pkt[0] || pkt[1] || (pkt[2] != 1))
 912                                 {
 913                                         eWarning("broken startcode");
 914                                         continue;
 915                                 }
 916
 917                                 pts_t pts = 0;
 918
 919                                 if (pkt[7] & 0x80) // PTS present?
 920                                 {
 921                                         pts  = ((unsigned long long)(pkt[ 9]&0xE))  << 29;
 922                                         pts |= ((unsigned long long)(pkt[10]&0xFF)) << 22;
 923                                         pts |= ((unsigned long long)(pkt[11]&0xFE)) << 14;
 924                                         pts |= ((unsigned long long)(pkt[12]&0xFF)) << 7;
 925                                         pts |= ((unsigned long long)(pkt[13]&0xFE)) >> 1;
 926
 927 #if 0
 928                                         off_t off = 0;
 929                                         RESULT r = m_tstools.fixupPTS(off, pts);
 930                                         if (r)
 931                                                 eWarning("fixup PTS while trickmode playback failed.\n");
 932 #endif
 933
 934                                         int sec = pts / 90000;
 935                                         int frm = pts % 90000;
 936                                         int min = sec / 60;
 937                                         sec %= 60;
 938                                         int hr = min / 60;
 939                                         min %= 60;
 940                                         int d = hr / 24;
 941                                         hr %= 24;
 942
 943 //                                      eDebug("original, fixed pts: %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
 944
 945                                         pts += 0x80000000LL;
 946                                         pts *= m_timebase_change;
 947                                         pts >>= 16;
 948
 949                                         sec = pts / 90000;
 950                                         frm = pts % 90000;
 951                                         min = sec / 60;
 952                                         sec %= 60;
 953                                         hr = min / 60;
 954                                         min %= 60;
 955                                         d = hr / 24;
 956                                         hr %= 24;
 957
 958 //                                      eDebug("new pts (after timebase change): %016llx %d:%02d:%02d:%02d:%05d", pts, d, hr, min, sec, frm);
 959
 960                                         pkt[9] &= ~0xE;
 961                                         pkt[10] = 0;
 962                                         pkt[11] &= ~1;
 963                                         pkt[12] = 0;
 964                                         pkt[13] &= ~1;
 965
 966                                         pkt[9]  |= (pts >> 29) & 0xE;
 967                                         pkt[10] |= (pts >> 22) & 0xFF;
 968                                         pkt[11] |= (pts >> 14) & 0xFE;
 969                                         pkt[12] |= (pts >> 7) & 0xFF;
 970                                         pkt[13] |= (pts << 1) & 0xFE;
 971                                 }
 972                         }
 973                 }
 974         }
 975 #endif
 976
 977 #if 1 /* not yet */
 978         if (!m_iframe_search)
 979                 return len;
 980
 981         unsigned char *data = (unsigned char*)_data; /* remove that const. we know what we are doing. */
 982
 983 //      eDebug("filterRecordData, size=%d (mod 188=%d), first byte is %02x", len, len %188, data[0]);
 984
 985         unsigned char *d = data;
 986         while ((d + 3 < data + len) && (d = (unsigned char*)memmem(d, data + len - d, "\x00\x00\x01", 3)))
 987         {
 988                 int offset = d - data;
 989                 int ts_offset = offset - offset % 188; /* offset to the start of TS packet */
 990                 unsigned char *ts = data + ts_offset;
 991                 int pid = ((ts[1] << 8) | ts[2]) & 0x1FFF;
 992
 993                 if ((d[3] == 0) && (m_pid == pid))  /* picture start */
 994                 {
 995                         int picture_type = (d[5] >> 3) & 7;
 996                         d += 4;
 997
 998 //                      eDebug("%d-frame at %d, offset in TS packet: %d, pid=%04x", picture_type, offset, offset % 188, pid);
 999
1000                         if (m_iframe_state == 1)
1001                         {
1002                                         /* we are allowing data, and stop allowing data on the next frame.
1003                                            we now found a frame. so stop here. */
1004                                 memset(data + offset, 0, 188 - (offset%188)); /* zero out rest of TS packet */
1005                                 current_span_remaining = 0;
1006                                 m_iframe_state = 0;
1007                                 unsigned char *fts = ts + 188;
1008                                 while (fts < (data + len))
1009                                 {
1010                                         fts[1] |= 0x1f;
1011                                         fts[2] |= 0xff; /* drop packet */
1012                                         fts += 188;
1013                                 }
1014
1015                                 return len; // ts_offset + 188; /* deliver this packet, but not more. */
1016                         } else
1017                         {
1018                                 if (picture_type != 1) /* we are only interested in I frames */
1019                                         continue;
1020
1021                                 unsigned char *fts = data;
1022                                 while (fts < ts)
1023                                 {
1024                                         fts[1] |= 0x1f;
1025                                         fts[2] |= 0xff; /* drop packet */
1026
1027                                         fts += 188;
1028                                 }
1029                                                 /* force payload only */
1030                                 ts[3] &= ~0x30;
1031                                 ts[3] |=  0x10;
1032
1033 //                              memset(ts + 4, 0xFF, (offset % 188) - 4);
1034
1035                                 m_iframe_state = 1;
1036                         }
1037                 } else if ((d[3] & 0xF0) == 0xE0) /* video stream */
1038                 {
1039                         if (m_pid != pid)
1040                         {
1041                                 eDebug("now locked to pid %04x", pid);
1042                                 m_pid = pid;
1043                         }
1044 //                      m_pid = 0x6e;
1045                         d += 4;
1046                 } else
1047                         d += 4; /* ignore */
1048
1049         }
1050
1051         if (m_iframe_state == 1)
1052                 return len;
1053         else
1054                 return 0; /* we need find an iframe first */
1055 #else
1056         return len;
1057 #endif
1058 }
1059
1060 DEFINE_REF(eDVBChannel);
1061
1062 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
1063 {
1064         m_frontend = frontend;
1065
1066         m_pvr_thread = 0;
1067
1068         m_skipmode_n = m_skipmode_m = 0;
1069
1070         if (m_frontend)
1071                 m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
1072 }
1073
1074 eDVBChannel::~eDVBChannel()
1075 {
1076         if (m_channel_id)
1077                 m_mgr->removeChannel(this);
1078
1079         stopFile();
1080 }
1081
1082 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
1083 {
1084         int state, ourstate = 0;
1085
1086                 /* if we are already in shutdown, don't change state. */
1087         if (m_state == state_release)
1088                 return;
1089
1090         if (fe->getState(state))
1091                 return;
1092
1093         if (state == iDVBFrontend::stateLock)
1094         {
1095                 eDebug("OURSTATE: ok");
1096                 ourstate = state_ok;
1097         } else if (state == iDVBFrontend::stateTuning)
1098         {
1099                 eDebug("OURSTATE: tuning");
1100                 ourstate = state_tuning;
1101         } else if (state == iDVBFrontend::stateLostLock)
1102         {
1103                         /* on managed channels, we try to retune in order to re-acquire lock. */
1104                 if (m_current_frontend_parameters)
1105                 {
1106                         eDebug("OURSTATE: lost lock, trying to retune");
1107                         ourstate = state_tuning;
1108                         m_frontend->get().tune(*m_current_frontend_parameters);
1109                 } else
1110                         /* on unmanaged channels, we don't do this. the client will do this. */
1111                 {
1112                         eDebug("OURSTATE: lost lock, unavailable now.");
1113                         ourstate = state_unavailable;
1114                 }
1115         } else if (state == iDVBFrontend::stateFailed)
1116         {
1117                 eDebug("OURSTATE: failed");
1118                 ourstate = state_failed;
1119         } else
1120                 eFatal("state unknown");
1121
1122         if (ourstate != m_state)
1123         {
1124                 m_state = ourstate;
1125                 m_stateChanged(this);
1126         }
1127 }
1128
1129 void eDVBChannel::pvrEvent(int event)
1130 {
1131         switch (event)
1132         {
1133         case eFilePushThread::evtEOF:
1134                 eDebug("eDVBChannel: End of file!");
1135                 m_event(this, evtEOF);
1136                 break;
1137         case eFilePushThread::evtUser: /* start */
1138                 eDebug("SOF");
1139                 m_event(this, evtSOF);
1140                 break;
1141         }
1142 }
1143
1144 void eDVBChannel::cueSheetEvent(int event)
1145 {
1146                 /* we might end up here if playing failed or stopped, but the client hasn't (yet) noted. */
1147         if (!m_pvr_thread)
1148                 return;
1149         switch (event)
1150         {
1151         case eCueSheet::evtSeek:
1152                 eDebug("seek.");
1153                 flushPVR(m_cue->m_decoding_demux);
1154                 break;
1155         case eCueSheet::evtSkipmode:
1156         {
1157                 {
1158                         m_cue->m_lock.WrLock();
1159                         m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
1160                         m_cue->m_lock.Unlock();
1161                         eRdLocker l(m_cue->m_lock);
1162                         if (m_cue->m_skipmode_ratio)
1163                         {
1164                                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
1165                                 eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
1166                                                 /* i agree that this might look a bit like black magic. */
1167                                 m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
1168                                 m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio / 8;
1169
1170                                 if (m_cue->m_skipmode_ratio < 0)
1171                                         m_skipmode_m -= m_skipmode_n;
1172
1173                                 eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
1174
1175                                 if (abs(m_skipmode_m) < abs(m_skipmode_n))
1176                                 {
1177                                         eWarning("something is wrong with this calculation");
1178                                         m_skipmode_n = m_skipmode_m = 0;
1179                                 }
1180                         } else
1181                         {
1182                                 eDebug("skipmode ratio is 0, normal play");
1183                                 m_skipmode_n = m_skipmode_m = 0;
1184                         }
1185                 }
1186                 m_pvr_thread->setIFrameSearch(m_skipmode_n != 0);
1187                 if (m_cue->m_skipmode_ratio != 0)
1188                         m_pvr_thread->setTimebaseChange(0x10000 * 9000 / (m_cue->m_skipmode_ratio / 10)); /* negative values are also ok */
1189                 else
1190                         m_pvr_thread->setTimebaseChange(0); /* normal playback */
1191                 eDebug("flush pvr");
1192                 flushPVR(m_cue->m_decoding_demux);
1193                 eDebug("done");
1194                 break;
1195         }
1196         case eCueSheet::evtSpanChanged:
1197         {
1198                 m_source_span.clear();
1199                 for (std::list<std::pair<pts_t, pts_t> >::const_iterator i(m_cue->m_spans.begin()); i != m_cue->m_spans.end(); ++i)
1200                 {
1201                         off_t offset_in, offset_out;
1202                         pts_t pts_in = i->first, pts_out = i->second;
1203                         if (m_tstools.getOffset(offset_in, pts_in) || m_tstools.getOffset(offset_out, pts_out))
1204                         {
1205                                 eDebug("span translation failed.\n");
1206                                 continue;
1207                         }
1208                         eDebug("source span: %llx .. %llx, translated to %llx..%llx", pts_in, pts_out, offset_in, offset_out);
1209                         m_source_span.push_back(std::pair<off_t, off_t>(offset_in, offset_out));
1210                 }
1211                 break;
1212         }
1213         }
1214 }
1215
1216         /* align toward zero */
1217 static inline long long align(long long x, int align)
1218 {
1219         int sign = x < 0;
1220
1221         if (sign)
1222                 x = -x;
1223
1224         x -= x % align;
1225
1226         if (sign)
1227                 x = -x;
1228
1229         return x;
1230 }
1231
1232         /* remember, this gets called from another thread. */
1233 void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
1234 {
1235         const int blocksize = 188;
1236         unsigned int max = align(10*1024*1024, blocksize);
1237         current_offset = align(current_offset, blocksize);
1238
1239         if (!m_cue)
1240         {
1241                 eDebug("no cue sheet. forcing normal play");
1242                 start = current_offset;
1243                 size = max;
1244                 return;
1245         }
1246
1247         m_cue->m_lock.RdLock();
1248         if (!m_cue->m_decoding_demux)
1249         {
1250                 start = current_offset;
1251                 size = max;
1252                 eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
1253                 m_cue->m_lock.Unlock();
1254                 return;
1255         }
1256
1257         if (m_skipmode_n)
1258         {
1259                 eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
1260                 max = align(m_skipmode_n, blocksize);
1261         }
1262
1263         eDebug("getNextSourceSpan, current offset is %08llx, m_skipmode_m = %d!", current_offset, m_skipmode_m);
1264
1265         current_offset += align(m_skipmode_m, blocksize);
1266
1267         while (!m_cue->m_seek_requests.empty())
1268         {
1269                 std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
1270                 m_cue->m_lock.Unlock();
1271                 m_cue->m_lock.WrLock();
1272                 m_cue->m_seek_requests.pop_front();
1273                 m_cue->m_lock.Unlock();
1274                 m_cue->m_lock.RdLock();
1275                 int relative = seek.first;
1276                 pts_t pts = seek.second;
1277
1278                 pts_t now = 0;
1279                 if (relative)
1280                 {
1281                         if (!m_cue->m_decoder)
1282                         {
1283                                 eDebug("no decoder - can't seek relative");
1284                                 continue;
1285                         }
1286                         if (m_cue->m_decoder->getPTS(0, now))
1287                         {
1288                                 eDebug("decoder getPTS failed, can't seek relative");
1289                                 continue;
1290                         }
1291                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
1292                         {
1293                                 eDebug("seekTo: getCurrentPosition failed!");
1294                                 continue;
1295                         }
1296                 } else if (pts < 0) /* seek relative to end */
1297                 {
1298                         pts_t len;
1299                         if (!getLength(len))
1300                         {
1301                                 eDebug("seeking relative to end. len=%lld, seek = %lld", len, pts);
1302                                 pts += len;
1303                         } else
1304                         {
1305                                 eWarning("getLength failed - can't seek relative to end!");
1306                                 continue;
1307                         }
1308                 }
1309
1310                 if (relative == 1) /* pts relative */
1311                 {
1312                         pts += now;
1313                         if (pts < 0)
1314                                 pts = 0;
1315                 }
1316
1317                 if (relative != 2)
1318                         if (pts < 0)
1319                                 pts = 0;
1320
1321                 if (relative == 2) /* AP relative */
1322                 {
1323                         eDebug("AP relative seeking: %lld, at %lld", pts, now);
1324                         pts_t nextap;
1325                         if (m_tstools.getNextAccessPoint(nextap, now, pts))
1326                         {
1327                                 pts = now - 90000; /* approx. 1s */
1328                                 eDebug("AP relative seeking failed!");
1329                         } else
1330                         {
1331                                 eDebug("next ap is %llx\n", pts);
1332                                 pts = nextap;
1333                         }
1334                 }
1335
1336                 off_t offset = 0;
1337                 if (m_tstools.getOffset(offset, pts))
1338                 {
1339                         eDebug("get offset for pts=%lld failed!", pts);
1340                         continue;
1341                 }
1342
1343                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
1344                 current_offset = align(offset, blocksize); /* in case tstools return non-aligned offset */
1345         }
1346
1347         m_cue->m_lock.Unlock();
1348
1349         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
1350         {
1351                 long long aligned_start = align(i->first, blocksize);
1352                 long long aligned_end = align(i->second, blocksize);
1353
1354                 if ((current_offset >= aligned_start) && (current_offset < aligned_end))
1355                 {
1356                         start = current_offset;
1357                                 /* max can not exceed max(size_t). aligned_end - current_offset, however, can. */
1358                         if ((aligned_end - current_offset) > max)
1359                                 size = max;
1360                         else
1361                                 size = aligned_end - current_offset;
1362                         eDebug("HIT, %lld < %lld < %lld, size: %d", i->first, current_offset, i->second, size);
1363                         return;
1364                 }
1365                 if (current_offset < aligned_start)
1366                 {
1367                                 /* ok, our current offset is in an 'out' zone. */
1368                         if ((m_skipmode_m >= 0) || (i == m_source_span.begin()))
1369                         {
1370                                         /* in normal playback, just start at the next zone. */
1371                                 start = i->first;
1372
1373                                         /* size is not 64bit! */
1374                                 if ((i->second - i->first) > max)
1375                                         size = max;
1376                                 else
1377                                         size = aligned_end - aligned_start;
1378
1379                                 eDebug("skip");
1380                                 if (m_skipmode_m < 0)
1381                                 {
1382                                         eDebug("reached SOF");
1383                                                 /* reached SOF */
1384                                         m_skipmode_m = 0;
1385                                         m_pvr_thread->sendEvent(eFilePushThread::evtUser);
1386                                 }
1387                         } else
1388                         {
1389                                         /* when skipping reverse, however, choose the zone before. */
1390                                 --i;
1391                                 eDebug("skip to previous block, which is %llx..%llx", i->first, i->second);
1392                                 size_t len;
1393
1394                                 aligned_start = align(i->first, blocksize);
1395                                 aligned_end = align(i->second, blocksize);
1396
1397                                 if ((aligned_end - aligned_start) > max)
1398                                         len = max;
1399                                 else
1400                                         len = aligned_end - aligned_start;
1401
1402                                 start = aligned_end - len;
1403                                 eDebug("skipping to %llx, %d", start, len);
1404                         }
1405
1406                         eDebug("result: %llx, %x (%llx %llx)", start, size, aligned_start, aligned_end);
1407                         return;
1408                 }
1409         }
1410
1411         if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
1412         {
1413                 eDebug("reached SOF");
1414                 m_skipmode_m = 0;
1415                 m_pvr_thread->sendEvent(eFilePushThread::evtUser);
1416         }
1417
1418         start = current_offset;
1419         size = max;
1420
1421         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
1422         return;
1423 }
1424
1425 void eDVBChannel::AddUse()
1426 {
1427         if (++m_use_count > 1 && m_state == state_last_instance)
1428         {
1429                 m_state = state_ok;
1430                 m_stateChanged(this);
1431         }
1432 }
1433
1434 void eDVBChannel::ReleaseUse()
1435 {
1436         if (!--m_use_count)
1437         {
1438                 m_state = state_release;
1439                 m_stateChanged(this);
1440         }
1441         else if (m_use_count == 1)
1442         {
1443                 m_state = state_last_instance;
1444                 m_stateChanged(this);
1445         }
1446 }
1447
1448 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
1449 {
1450         if (m_channel_id)
1451                 m_mgr->removeChannel(this);
1452
1453         if (!channelid)
1454                 return 0;
1455
1456         if (!m_frontend)
1457         {
1458                 eDebug("no frontend to tune!");
1459                 return -ENODEV;
1460         }
1461
1462         m_channel_id = channelid;
1463         m_mgr->addChannel(channelid, this);
1464         m_state = state_tuning;
1465                         /* if tuning fails, shutdown the channel immediately. */
1466         int res;
1467         res = m_frontend->get().tune(*feparm);
1468         m_current_frontend_parameters = feparm;
1469
1470         if (res)
1471         {
1472                 m_state = state_release;
1473                 m_stateChanged(this);
1474                 return res;
1475         }
1476
1477         return 0;
1478 }
1479
1480 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
1481 {
1482         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
1483         return 0;
1484 }
1485
1486 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
1487 {
1488         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
1489         return 0;
1490 }
1491
1492 RESULT eDVBChannel::getState(int &state)
1493 {
1494         state = m_state;
1495         return 0;
1496 }
1497
1498 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
1499 {
1500         return -1;
1501 }
1502
1503 void eDVBChannel::SDTready(int result)
1504 {
1505         ePyObject args = PyTuple_New(2), ret;
1506         bool ok=false;
1507         if (!result)
1508         {
1509                 for (std::vector<ServiceDescriptionSection*>::const_iterator i = m_SDT->getSections().begin(); i != m_SDT->getSections().end(); ++i)
1510                 {
1511                         ok = true;
1512                         PyTuple_SET_ITEM(args, 0, PyInt_FromLong((*i)->getTransportStreamId()));
1513                         PyTuple_SET_ITEM(args, 1, PyInt_FromLong((*i)->getOriginalNetworkId()));
1514                         break;
1515                 }
1516         }
1517         if (!ok)
1518         {
1519                 PyTuple_SET_ITEM(args, 0, Py_None);
1520                 PyTuple_SET_ITEM(args, 1, Py_None);
1521                 Py_INCREF(Py_None);
1522                 Py_INCREF(Py_None);
1523         }
1524         ret = PyObject_CallObject(m_tsid_onid_callback, args);
1525         if (ret)
1526                 Py_DECREF(ret);
1527         Py_DECREF(args);
1528         Py_DECREF(m_tsid_onid_callback);
1529         m_tsid_onid_callback = ePyObject();
1530         m_tsid_onid_demux = 0;
1531         m_SDT = 0;
1532 }
1533
1534 RESULT eDVBChannel::requestTsidOnid(ePyObject callback)
1535 {
1536         if (PyCallable_Check(callback))
1537         {
1538                 if (!getDemux(m_tsid_onid_demux, 0))
1539                 {
1540                         m_SDT = new eTable<ServiceDescriptionSection>;
1541                         CONNECT(m_SDT->tableReady, eDVBChannel::SDTready);
1542                         if (m_SDT->start(m_tsid_onid_demux, eDVBSDTSpec()))
1543                         {
1544                                 m_tsid_onid_demux = 0;
1545                                 m_SDT = 0;
1546                         }
1547                         else
1548                         {
1549                                 Py_INCREF(callback);
1550                                 m_tsid_onid_callback = callback;
1551                                 return 0;
1552                         }
1553                 }
1554         }
1555         return -1;
1556 }
1557
1558 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
1559 {
1560         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
1561
1562         if (!our_demux)
1563         {
1564                 demux = 0;
1565
1566                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
1567                         return -1;
1568         }
1569
1570         demux = *our_demux;
1571                 /* don't hold a reference to the decoding demux, we don't need it. */
1572
1573                 /* FIXME: by dropping the 'allocated demux' in favour of the 'iDVBDemux',
1574                    the refcount is lost. thus, decoding demuxes are never allocated.
1575
1576                    this poses a big problem for PiP. */
1577         if (cap & capDecode)
1578                 our_demux = 0;
1579         return 0;
1580 }
1581
1582 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
1583 {
1584         frontend = 0;
1585         if (!m_frontend)
1586                 return -ENODEV;
1587         frontend = &m_frontend->get();
1588         if (frontend)
1589                 return 0;
1590         return -ENODEV;
1591 }
1592
1593 RESULT eDVBChannel::getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param)
1594 {
1595         param = m_current_frontend_parameters;
1596         return 0;
1597 }
1598
1599 RESULT eDVBChannel::playFile(const char *file)
1600 {
1601         ASSERT(!m_frontend);
1602         if (m_pvr_thread)
1603         {
1604                 m_pvr_thread->stop();
1605                 delete m_pvr_thread;
1606                 m_pvr_thread = 0;
1607         }
1608
1609         m_tstools.openFile(file);
1610
1611                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
1612                    THEN DO A REAL FIX HERE! */
1613
1614                 /* (this codepath needs to be improved anyway.) */
1615 #if HAVE_DVB_API_VERSION < 3
1616         m_pvr_fd_dst = open("/dev/pvr", O_WRONLY);
1617 #else
1618         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
1619 #endif
1620         if (m_pvr_fd_dst < 0)
1621         {
1622                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
1623                 return -ENODEV;
1624         }
1625
1626         m_pvr_thread = new eDVBChannelFilePush();
1627         m_pvr_thread->enablePVRCommit(1);
1628         m_pvr_thread->setStreamMode(1);
1629         m_pvr_thread->setScatterGather(this);
1630
1631         if (m_pvr_thread->start(file, m_pvr_fd_dst))
1632         {
1633                 delete m_pvr_thread;
1634                 m_pvr_thread = 0;
1635                 eDebug("can't open PVR file %s (%m)", file);
1636                 return -ENOENT;
1637         }
1638         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
1639
1640         m_state = state_ok;
1641         m_stateChanged(this);
1642
1643         return 0;
1644 }
1645
1646 void eDVBChannel::stopFile()
1647 {
1648         if (m_pvr_thread)
1649         {
1650                 m_pvr_thread->stop();
1651                 ::close(m_pvr_fd_dst);
1652                 delete m_pvr_thread;
1653                 m_pvr_thread = 0;
1654         }
1655 }
1656
1657 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
1658 {
1659         m_conn_cueSheetEvent = 0;
1660         m_cue = cuesheet;
1661         if (m_cue)
1662                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
1663 }
1664
1665 RESULT eDVBChannel::getLength(pts_t &len)
1666 {
1667         return m_tstools.calcLen(len);
1668 }
1669
1670 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
1671 {
1672         if (!decoding_demux)
1673                 return -1;
1674
1675         pts_t now;
1676
1677         int r;
1678
1679         if (mode == 0) /* demux */
1680         {
1681                 r = decoding_demux->getSTC(now, 0);
1682                 if (r)
1683                 {
1684                         eDebug("demux getSTC failed");
1685                         return -1;
1686                 }
1687         } else
1688                 now = pos; /* fixup supplied */
1689
1690         off_t off = 0; /* TODO: fixme */
1691         r = m_tstools.fixupPTS(off, now);
1692         if (r)
1693         {
1694                 eDebug("fixup PTS failed");
1695                 return -1;
1696         }
1697
1698         pos = now;
1699
1700         return 0;
1701 }
1702
1703 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
1704 {
1705                         /* when seeking, we have to ensure that all buffers are flushed.
1706                            there are basically 3 buffers:
1707                            a.) the filepush's internal buffer
1708                            b.) the PVR buffer (before demux)
1709                            c.) the ratebuffer (after demux)
1710
1711                            it's important to clear them in the correct order, otherwise
1712                            the ratebuffer (for example) would immediately refill from
1713                            the not-yet-flushed PVR buffer.
1714                         */
1715
1716         m_pvr_thread->pause();
1717                 /* flush internal filepush buffer */
1718         m_pvr_thread->flush();
1719                 /* HACK: flush PVR buffer */
1720         ::ioctl(m_pvr_fd_dst, 0);
1721
1722                 /* flush ratebuffers (video, audio) */
1723         if (decoding_demux)
1724                 decoding_demux->flush();
1725
1726                 /* demux will also flush all decoder.. */
1727                 /* resume will re-query the SG */
1728         m_pvr_thread->resume();
1729 }
1730
1731 DEFINE_REF(eCueSheet);
1732
1733 eCueSheet::eCueSheet()
1734 {
1735         m_skipmode_ratio = 0;
1736 }
1737
1738 void eCueSheet::seekTo(int relative, const pts_t &pts)
1739 {
1740         m_lock.WrLock();
1741         m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1742         m_lock.Unlock();
1743         m_event(evtSeek);
1744 }
1745
1746 void eCueSheet::clear()
1747 {
1748         m_lock.WrLock();
1749         m_spans.clear();
1750         m_lock.Unlock();
1751 }
1752
1753 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1754 {
1755         assert(begin < end);
1756         m_lock.WrLock();
1757         m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1758         m_lock.Unlock();
1759 }
1760
1761 void eCueSheet::commitSpans()
1762 {
1763         m_event(evtSpanChanged);
1764 }
1765
1766 void eCueSheet::setSkipmode(const pts_t &ratio)
1767 {
1768         m_lock.WrLock();
1769         m_skipmode_ratio = ratio;
1770         m_lock.Unlock();
1771         m_event(evtSkipmode);
1772 }
1773
1774 void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
1775 {
1776         m_decoding_demux = demux;
1777         m_decoder = decoder;
1778 }
1779
1780 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1781 {
1782         connection = new eConnection(this, m_event.connect(event));
1783         return 0;
1784 }