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 /* This codepath is required on Broadcom-based Dreamboxes (DM800, DM8000) and strips away non-I-frames. */
 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 || d[3] == 0x09 && d[-1] == 0 && (ts[1] & 0x40)) && (m_pid == pid))  /* picture start */
 994                 {
 995                         int picture_type = (d[3]==0 ? (d[5] >> 3) & 7 : (d[4] >> 5) + 1);
 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                                 /* verify that this is actually a PES header, not just some ES data */
1040                         if (ts[1] & 0x40) /* PUSI set */
1041                         {
1042                                 int payload_start = 4;
1043                                 if (ts[3] & 0x20) /* adaptation field present */
1044                                         payload_start += ts[4] + 1; /* skip AF */
1045                                 if (payload_start == (offset%188)) /* the 00 00 01 should be directly at the payload start, otherwise it's not a PES header */
1046                                 {
1047                                         if (m_pid != pid)
1048                                         {
1049                                                 eDebug("now locked to pid %04x (%02x %02x %02x %02x)", pid, ts[0], ts[1], ts[2], ts[3]);
1050                                                 m_pid = pid;
1051                                         }
1052                                 }
1053                         }
1054 //                      m_pid = 0x6e;
1055                         d += 4;
1056                 } else
1057                         d += 4; /* ignore */
1058         }
1059
1060         if (m_iframe_state == 1)
1061                 return len;
1062         else
1063                 return 0; /* we need find an iframe first */
1064 #else
1065         return len;
1066 #endif
1067 }
1068
1069 DEFINE_REF(eDVBChannel);
1070
1071 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
1072 {
1073         m_frontend = frontend;
1074
1075         m_pvr_thread = 0;
1076
1077         m_skipmode_n = m_skipmode_m = 0;
1078
1079         if (m_frontend)
1080                 m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
1081 }
1082
1083 eDVBChannel::~eDVBChannel()
1084 {
1085         if (m_channel_id)
1086                 m_mgr->removeChannel(this);
1087
1088         stopFile();
1089 }
1090
1091 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
1092 {
1093         int state, ourstate = 0;
1094
1095                 /* if we are already in shutdown, don't change state. */
1096         if (m_state == state_release)
1097                 return;
1098
1099         if (fe->getState(state))
1100                 return;
1101
1102         if (state == iDVBFrontend::stateLock)
1103         {
1104                 eDebug("OURSTATE: ok");
1105                 ourstate = state_ok;
1106         } else if (state == iDVBFrontend::stateTuning)
1107         {
1108                 eDebug("OURSTATE: tuning");
1109                 ourstate = state_tuning;
1110         } else if (state == iDVBFrontend::stateLostLock)
1111         {
1112                         /* on managed channels, we try to retune in order to re-acquire lock. */
1113                 if (m_current_frontend_parameters)
1114                 {
1115                         eDebug("OURSTATE: lost lock, trying to retune");
1116                         ourstate = state_tuning;
1117                         m_frontend->get().tune(*m_current_frontend_parameters);
1118                 } else
1119                         /* on unmanaged channels, we don't do this. the client will do this. */
1120                 {
1121                         eDebug("OURSTATE: lost lock, unavailable now.");
1122                         ourstate = state_unavailable;
1123                 }
1124         } else if (state == iDVBFrontend::stateFailed)
1125         {
1126                 eDebug("OURSTATE: failed");
1127                 ourstate = state_failed;
1128         } else
1129                 eFatal("state unknown");
1130
1131         if (ourstate != m_state)
1132         {
1133                 m_state = ourstate;
1134                 m_stateChanged(this);
1135         }
1136 }
1137
1138 void eDVBChannel::pvrEvent(int event)
1139 {
1140         switch (event)
1141         {
1142         case eFilePushThread::evtEOF:
1143                 eDebug("eDVBChannel: End of file!");
1144                 m_event(this, evtEOF);
1145                 break;
1146         case eFilePushThread::evtUser: /* start */
1147                 eDebug("SOF");
1148                 m_event(this, evtSOF);
1149                 break;
1150         }
1151 }
1152
1153 void eDVBChannel::cueSheetEvent(int event)
1154 {
1155                 /* we might end up here if playing failed or stopped, but the client hasn't (yet) noted. */
1156         if (!m_pvr_thread)
1157                 return;
1158         switch (event)
1159         {
1160         case eCueSheet::evtSeek:
1161                 eDebug("seek.");
1162                 flushPVR(m_cue->m_decoding_demux);
1163                 break;
1164         case eCueSheet::evtSkipmode:
1165         {
1166                 {
1167                         m_cue->m_lock.WrLock();
1168                         m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
1169                         m_cue->m_lock.Unlock();
1170                         eRdLocker l(m_cue->m_lock);
1171                         if (m_cue->m_skipmode_ratio)
1172                         {
1173                                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
1174                                 eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
1175                                                 /* i agree that this might look a bit like black magic. */
1176                                 m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
1177                                 m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio / 8;
1178
1179                                 if (m_cue->m_skipmode_ratio < 0)
1180                                         m_skipmode_m -= m_skipmode_n;
1181
1182                                 eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
1183
1184                                 if (abs(m_skipmode_m) < abs(m_skipmode_n))
1185                                 {
1186                                         eWarning("something is wrong with this calculation");
1187                                         m_skipmode_n = m_skipmode_m = 0;
1188                                 }
1189                         } else
1190                         {
1191                                 eDebug("skipmode ratio is 0, normal play");
1192                                 m_skipmode_n = m_skipmode_m = 0;
1193                         }
1194                 }
1195                 m_pvr_thread->setIFrameSearch(m_skipmode_n != 0);
1196                 if (m_cue->m_skipmode_ratio != 0)
1197                         m_pvr_thread->setTimebaseChange(0x10000 * 9000 / (m_cue->m_skipmode_ratio / 10)); /* negative values are also ok */
1198                 else
1199                         m_pvr_thread->setTimebaseChange(0); /* normal playback */
1200                 eDebug("flush pvr");
1201                 flushPVR(m_cue->m_decoding_demux);
1202                 eDebug("done");
1203                 break;
1204         }
1205         case eCueSheet::evtSpanChanged:
1206         {
1207                 m_source_span.clear();
1208                 for (std::list<std::pair<pts_t, pts_t> >::const_iterator i(m_cue->m_spans.begin()); i != m_cue->m_spans.end(); ++i)
1209                 {
1210                         off_t offset_in, offset_out;
1211                         pts_t pts_in = i->first, pts_out = i->second;
1212                         if (m_tstools.getOffset(offset_in, pts_in, -1) || m_tstools.getOffset(offset_out, pts_out, 1))
1213                         {
1214                                 eDebug("span translation failed.\n");
1215                                 continue;
1216                         }
1217                         eDebug("source span: %llx .. %llx, translated to %llx..%llx", pts_in, pts_out, offset_in, offset_out);
1218                         m_source_span.push_back(std::pair<off_t, off_t>(offset_in, offset_out));
1219                 }
1220                 break;
1221         }
1222         }
1223 }
1224
1225         /* align toward zero */
1226 static inline long long align(long long x, int align)
1227 {
1228         int sign = x < 0;
1229
1230         if (sign)
1231                 x = -x;
1232
1233         x -= x % align;
1234
1235         if (sign)
1236                 x = -x;
1237
1238         return x;
1239 }
1240
1241         /* remember, this gets called from another thread. */
1242 void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
1243 {
1244         const int blocksize = 188;
1245         unsigned int max = align(10*1024*1024, blocksize);
1246         current_offset = align(current_offset, blocksize);
1247
1248         if (!m_cue)
1249         {
1250                 eDebug("no cue sheet. forcing normal play");
1251                 start = current_offset;
1252                 size = max;
1253                 return;
1254         }
1255
1256         m_cue->m_lock.RdLock();
1257         if (!m_cue->m_decoding_demux)
1258         {
1259                 start = current_offset;
1260                 size = max;
1261                 eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
1262                 m_cue->m_lock.Unlock();
1263                 return;
1264         }
1265
1266         if (m_skipmode_n)
1267         {
1268                 eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
1269                 max = align(m_skipmode_n, blocksize);
1270         }
1271
1272         eDebug("getNextSourceSpan, current offset is %08llx, m_skipmode_m = %d!", current_offset, m_skipmode_m);
1273
1274         current_offset += align(m_skipmode_m, blocksize);
1275
1276         while (!m_cue->m_seek_requests.empty())
1277         {
1278                 std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
1279                 m_cue->m_lock.Unlock();
1280                 m_cue->m_lock.WrLock();
1281                 m_cue->m_seek_requests.pop_front();
1282                 m_cue->m_lock.Unlock();
1283                 m_cue->m_lock.RdLock();
1284                 int relative = seek.first;
1285                 pts_t pts = seek.second;
1286
1287                 pts_t now = 0;
1288                 if (relative)
1289                 {
1290                         if (!m_cue->m_decoder)
1291                         {
1292                                 eDebug("no decoder - can't seek relative");
1293                                 continue;
1294                         }
1295                         if (m_cue->m_decoder->getPTS(0, now))
1296                         {
1297                                 eDebug("decoder getPTS failed, can't seek relative");
1298                                 continue;
1299                         }
1300                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
1301                         {
1302                                 eDebug("seekTo: getCurrentPosition failed!");
1303                                 continue;
1304                         }
1305                 } else if (pts < 0) /* seek relative to end */
1306                 {
1307                         pts_t len;
1308                         if (!getLength(len))
1309                         {
1310                                 eDebug("seeking relative to end. len=%lld, seek = %lld", len, pts);
1311                                 pts += len;
1312                         } else
1313                         {
1314                                 eWarning("getLength failed - can't seek relative to end!");
1315                                 continue;
1316                         }
1317                 }
1318
1319                 if (relative == 1) /* pts relative */
1320                 {
1321                         pts += now;
1322                         if (pts < 0)
1323                                 pts = 0;
1324                 }
1325
1326                 if (relative != 2)
1327                         if (pts < 0)
1328                                 pts = 0;
1329
1330                 if (relative == 2) /* AP relative */
1331                 {
1332                         eDebug("AP relative seeking: %lld, at %lld", pts, now);
1333                         pts_t nextap;
1334                         if (m_tstools.getNextAccessPoint(nextap, now, pts))
1335                         {
1336                                 pts = now - 90000; /* approx. 1s */
1337                                 eDebug("AP relative seeking failed!");
1338                         } else
1339                         {
1340                                 pts = nextap;
1341                                 eDebug("next ap is %llx\n", pts);
1342                         }
1343                 }
1344
1345                 off_t offset = 0;
1346                 if (m_tstools.getOffset(offset, pts, -1))
1347                 {
1348                         eDebug("get offset for pts=%lld failed!", pts);
1349                         continue;
1350                 }
1351
1352                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
1353                 current_offset = align(offset, blocksize); /* in case tstools return non-aligned offset */
1354         }
1355
1356         m_cue->m_lock.Unlock();
1357
1358         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
1359         {
1360                 long long aligned_start = align(i->first, blocksize);
1361                 long long aligned_end = align(i->second, blocksize);
1362
1363                 if ((current_offset >= aligned_start) && (current_offset < aligned_end))
1364                 {
1365                         start = current_offset;
1366                                 /* max can not exceed max(size_t). aligned_end - current_offset, however, can. */
1367                         if ((aligned_end - current_offset) > max)
1368                                 size = max;
1369                         else
1370                                 size = aligned_end - current_offset;
1371                         eDebug("HIT, %lld < %lld < %lld, size: %d", i->first, current_offset, i->second, size);
1372                         return;
1373                 }
1374                 if (current_offset < aligned_start)
1375                 {
1376                                 /* ok, our current offset is in an 'out' zone. */
1377                         if ((m_skipmode_m >= 0) || (i == m_source_span.begin()))
1378                         {
1379                                         /* in normal playback, just start at the next zone. */
1380                                 start = i->first;
1381
1382                                         /* size is not 64bit! */
1383                                 if ((i->second - i->first) > max)
1384                                         size = max;
1385                                 else
1386                                         size = aligned_end - aligned_start;
1387
1388                                 eDebug("skip");
1389                                 if (m_skipmode_m < 0)
1390                                 {
1391                                         eDebug("reached SOF");
1392                                                 /* reached SOF */
1393                                         m_skipmode_m = 0;
1394                                         m_pvr_thread->sendEvent(eFilePushThread::evtUser);
1395                                 }
1396                         } else
1397                         {
1398                                         /* when skipping reverse, however, choose the zone before. */
1399                                 --i;
1400                                 eDebug("skip to previous block, which is %llx..%llx", i->first, i->second);
1401                                 size_t len;
1402
1403                                 aligned_start = align(i->first, blocksize);
1404                                 aligned_end = align(i->second, blocksize);
1405
1406                                 if ((aligned_end - aligned_start) > max)
1407                                         len = max;
1408                                 else
1409                                         len = aligned_end - aligned_start;
1410
1411                                 start = aligned_end - len;
1412                                 eDebug("skipping to %llx, %d", start, len);
1413                         }
1414
1415                         eDebug("result: %llx, %x (%llx %llx)", start, size, aligned_start, aligned_end);
1416                         return;
1417                 }
1418         }
1419
1420         if (m_source_span.empty()) {
1421                 if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
1422                 {
1423                         eDebug("reached SOF");
1424                         m_skipmode_m = 0;
1425                         m_pvr_thread->sendEvent(eFilePushThread::evtUser);
1426                 }
1427                 start = current_offset;
1428                 size = max;
1429         } else {
1430                 off_t tmp2, tmp = align(m_source_span.rbegin()->second, blocksize);
1431                 pts_t len;
1432                 getLength(len);
1433                 m_tstools.getOffset(tmp2, len, 1);
1434                 if (current_offset == tmp || current_offset == tmp2) {
1435                         start = tmp2;
1436                         size = max;
1437                 } else {
1438                         start = tmp - align(512*1024, blocksize);
1439                         size = align(512*1024, blocksize);
1440                 }
1441         }
1442
1443         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
1444         return;
1445 }
1446
1447 void eDVBChannel::AddUse()
1448 {
1449         if (++m_use_count > 1 && m_state == state_last_instance)
1450         {
1451                 m_state = state_ok;
1452                 m_stateChanged(this);
1453         }
1454 }
1455
1456 void eDVBChannel::ReleaseUse()
1457 {
1458         if (!--m_use_count)
1459         {
1460                 m_state = state_release;
1461                 m_stateChanged(this);
1462         }
1463         else if (m_use_count == 1)
1464         {
1465                 m_state = state_last_instance;
1466                 m_stateChanged(this);
1467         }
1468 }
1469
1470 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
1471 {
1472         if (m_channel_id)
1473                 m_mgr->removeChannel(this);
1474
1475         if (!channelid)
1476                 return 0;
1477
1478         if (!m_frontend)
1479         {
1480                 eDebug("no frontend to tune!");
1481                 return -ENODEV;
1482         }
1483
1484         m_channel_id = channelid;
1485         m_mgr->addChannel(channelid, this);
1486         m_state = state_tuning;
1487                         /* if tuning fails, shutdown the channel immediately. */
1488         int res;
1489         res = m_frontend->get().tune(*feparm);
1490         m_current_frontend_parameters = feparm;
1491
1492         if (res)
1493         {
1494                 m_state = state_release;
1495                 m_stateChanged(this);
1496                 return res;
1497         }
1498
1499         return 0;
1500 }
1501
1502 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
1503 {
1504         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
1505         return 0;
1506 }
1507
1508 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
1509 {
1510         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
1511         return 0;
1512 }
1513
1514 RESULT eDVBChannel::getState(int &state)
1515 {
1516         state = m_state;
1517         return 0;
1518 }
1519
1520 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
1521 {
1522         return -1;
1523 }
1524
1525 void eDVBChannel::SDTready(int result)
1526 {
1527         ePyObject args = PyTuple_New(2), ret;
1528         bool ok=false;
1529         if (!result)
1530         {
1531                 for (std::vector<ServiceDescriptionSection*>::const_iterator i = m_SDT->getSections().begin(); i != m_SDT->getSections().end(); ++i)
1532                 {
1533                         ok = true;
1534                         PyTuple_SET_ITEM(args, 0, PyInt_FromLong((*i)->getTransportStreamId()));
1535                         PyTuple_SET_ITEM(args, 1, PyInt_FromLong((*i)->getOriginalNetworkId()));
1536                         break;
1537                 }
1538         }
1539         if (!ok)
1540         {
1541                 PyTuple_SET_ITEM(args, 0, Py_None);
1542                 PyTuple_SET_ITEM(args, 1, Py_None);
1543                 Py_INCREF(Py_None);
1544                 Py_INCREF(Py_None);
1545         }
1546         ret = PyObject_CallObject(m_tsid_onid_callback, args);
1547         if (ret)
1548                 Py_DECREF(ret);
1549         Py_DECREF(args);
1550         Py_DECREF(m_tsid_onid_callback);
1551         m_tsid_onid_callback = ePyObject();
1552         m_tsid_onid_demux = 0;
1553         m_SDT = 0;
1554 }
1555
1556 RESULT eDVBChannel::requestTsidOnid(ePyObject callback)
1557 {
1558         if (PyCallable_Check(callback))
1559         {
1560                 if (!getDemux(m_tsid_onid_demux, 0))
1561                 {
1562                         m_SDT = new eTable<ServiceDescriptionSection>;
1563                         CONNECT(m_SDT->tableReady, eDVBChannel::SDTready);
1564                         if (m_SDT->start(m_tsid_onid_demux, eDVBSDTSpec()))
1565                         {
1566                                 m_tsid_onid_demux = 0;
1567                                 m_SDT = 0;
1568                         }
1569                         else
1570                         {
1571                                 Py_INCREF(callback);
1572                                 m_tsid_onid_callback = callback;
1573                                 return 0;
1574                         }
1575                 }
1576         }
1577         return -1;
1578 }
1579
1580 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
1581 {
1582         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
1583
1584         if (!our_demux)
1585         {
1586                 demux = 0;
1587
1588                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
1589                         return -1;
1590         }
1591
1592         demux = *our_demux;
1593                 /* don't hold a reference to the decoding demux, we don't need it. */
1594
1595                 /* FIXME: by dropping the 'allocated demux' in favour of the 'iDVBDemux',
1596                    the refcount is lost. thus, decoding demuxes are never allocated.
1597
1598                    this poses a big problem for PiP. */
1599         if (cap & capDecode)
1600                 our_demux = 0;
1601         return 0;
1602 }
1603
1604 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
1605 {
1606         frontend = 0;
1607         if (!m_frontend)
1608                 return -ENODEV;
1609         frontend = &m_frontend->get();
1610         if (frontend)
1611                 return 0;
1612         return -ENODEV;
1613 }
1614
1615 RESULT eDVBChannel::getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param)
1616 {
1617         param = m_current_frontend_parameters;
1618         return 0;
1619 }
1620
1621 RESULT eDVBChannel::playFile(const char *file)
1622 {
1623         ASSERT(!m_frontend);
1624         if (m_pvr_thread)
1625         {
1626                 m_pvr_thread->stop();
1627                 delete m_pvr_thread;
1628                 m_pvr_thread = 0;
1629         }
1630
1631         m_tstools.openFile(file);
1632
1633                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
1634                    THEN DO A REAL FIX HERE! */
1635
1636                 /* (this codepath needs to be improved anyway.) */
1637 #if HAVE_DVB_API_VERSION < 3
1638         m_pvr_fd_dst = open("/dev/pvr", O_WRONLY);
1639 #else
1640         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
1641 #endif
1642         if (m_pvr_fd_dst < 0)
1643         {
1644                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
1645                 return -ENODEV;
1646         }
1647
1648         m_pvr_thread = new eDVBChannelFilePush();
1649         m_pvr_thread->enablePVRCommit(1);
1650         m_pvr_thread->setStreamMode(1);
1651         m_pvr_thread->setScatterGather(this);
1652
1653         if (m_pvr_thread->start(file, m_pvr_fd_dst))
1654         {
1655                 delete m_pvr_thread;
1656                 m_pvr_thread = 0;
1657                 eDebug("can't open PVR file %s (%m)", file);
1658                 return -ENOENT;
1659         }
1660         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
1661
1662         m_state = state_ok;
1663         m_stateChanged(this);
1664
1665         return 0;
1666 }
1667
1668 void eDVBChannel::stopFile()
1669 {
1670         if (m_pvr_thread)
1671         {
1672                 m_pvr_thread->stop();
1673                 ::close(m_pvr_fd_dst);
1674                 delete m_pvr_thread;
1675                 m_pvr_thread = 0;
1676         }
1677 }
1678
1679 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
1680 {
1681         m_conn_cueSheetEvent = 0;
1682         m_cue = cuesheet;
1683         if (m_cue)
1684                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
1685 }
1686
1687 RESULT eDVBChannel::getLength(pts_t &len)
1688 {
1689         return m_tstools.calcLen(len);
1690 }
1691
1692 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
1693 {
1694         if (!decoding_demux)
1695                 return -1;
1696
1697         pts_t now;
1698
1699         int r;
1700
1701         if (mode == 0) /* demux */
1702         {
1703                 r = decoding_demux->getSTC(now, 0);
1704                 if (r)
1705                 {
1706                         eDebug("demux getSTC failed");
1707                         return -1;
1708                 }
1709         } else
1710                 now = pos; /* fixup supplied */
1711
1712         off_t off = 0; /* TODO: fixme */
1713         r = m_tstools.fixupPTS(off, now);
1714         if (r)
1715         {
1716                 eDebug("fixup PTS failed");
1717                 return -1;
1718         }
1719
1720         pos = now;
1721
1722         return 0;
1723 }
1724
1725 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
1726 {
1727                         /* when seeking, we have to ensure that all buffers are flushed.
1728                            there are basically 3 buffers:
1729                            a.) the filepush's internal buffer
1730                            b.) the PVR buffer (before demux)
1731                            c.) the ratebuffer (after demux)
1732
1733                            it's important to clear them in the correct order, otherwise
1734                            the ratebuffer (for example) would immediately refill from
1735                            the not-yet-flushed PVR buffer.
1736                         */
1737
1738         m_pvr_thread->pause();
1739                 /* flush internal filepush buffer */
1740         m_pvr_thread->flush();
1741                 /* HACK: flush PVR buffer */
1742         ::ioctl(m_pvr_fd_dst, 0);
1743
1744                 /* flush ratebuffers (video, audio) */
1745         if (decoding_demux)
1746                 decoding_demux->flush();
1747
1748                 /* demux will also flush all decoder.. */
1749                 /* resume will re-query the SG */
1750         m_pvr_thread->resume();
1751 }
1752
1753 DEFINE_REF(eCueSheet);
1754
1755 eCueSheet::eCueSheet()
1756 {
1757         m_skipmode_ratio = 0;
1758 }
1759
1760 void eCueSheet::seekTo(int relative, const pts_t &pts)
1761 {
1762         m_lock.WrLock();
1763         m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1764         m_lock.Unlock();
1765         m_event(evtSeek);
1766 }
1767
1768 void eCueSheet::clear()
1769 {
1770         m_lock.WrLock();
1771         m_spans.clear();
1772         m_lock.Unlock();
1773 }
1774
1775 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1776 {
1777         assert(begin < end);
1778         m_lock.WrLock();
1779         m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1780         m_lock.Unlock();
1781 }
1782
1783 void eCueSheet::commitSpans()
1784 {
1785         m_event(evtSpanChanged);
1786 }
1787
1788 void eCueSheet::setSkipmode(const pts_t &ratio)
1789 {
1790         m_lock.WrLock();
1791         m_skipmode_ratio = ratio;
1792         m_lock.Unlock();
1793         m_event(evtSkipmode);
1794 }
1795
1796 void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
1797 {
1798         m_decoding_demux = demux;
1799         m_decoder = decoder;
1800 }
1801
1802 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1803 {
1804         connection = new eConnection(this, m_event.connect(event));
1805         return 0;
1806 }