a126aae719969d51df087b4676d0ba540d1a6ff2
[openblackhole/openblackhole-enigma2.git] / lib / dvb / dvb.cpp
1 #include <lib/base/eerror.h>
2 #include <lib/base/filepush.h>
3 #include <lib/dvb/idvb.h>
4 #include <lib/dvb/dvb.h>
5 #include <lib/dvb/sec.h>
6
7 #include <errno.h>
8 #include <sys/types.h>
9 #include <sys/stat.h>
10 #include <unistd.h>
11 #include <fcntl.h>
12 #include <sys/ioctl.h>
13
14 DEFINE_REF(eDVBRegisteredFrontend);
15 DEFINE_REF(eDVBRegisteredDemux);
16
17 DEFINE_REF(eDVBAllocatedFrontend);
18
19 eDVBAllocatedFrontend::eDVBAllocatedFrontend(eDVBRegisteredFrontend *fe): m_fe(fe)
20 {
21         m_fe->inc_use();
22 }
23
24 eDVBAllocatedFrontend::~eDVBAllocatedFrontend()
25 {
26         m_fe->dec_use();
27 }
28
29 DEFINE_REF(eDVBAllocatedDemux);
30
31 eDVBAllocatedDemux::eDVBAllocatedDemux(eDVBRegisteredDemux *demux): m_demux(demux)
32 {
33         m_demux->m_inuse++;
34 }
35
36 eDVBAllocatedDemux::~eDVBAllocatedDemux()
37 {
38         --m_demux->m_inuse;
39 }
40
41 DEFINE_REF(eDVBResourceManager);
42
43 eDVBResourceManager *eDVBResourceManager::instance;
44
45 eDVBResourceManager::eDVBResourceManager()
46         :m_releaseCachedChannelTimer(eApp)
47 {
48         avail = 1;
49         busy = 0;
50         m_sec = new eDVBSatelliteEquipmentControl(m_frontend);
51         if (!instance)
52                 instance = this;
53                 
54                 /* search available adapters... */
55
56                 // add linux devices
57         
58         int num_adapter = 0;
59         while (eDVBAdapterLinux::exist(num_adapter))
60         {
61                 addAdapter(new eDVBAdapterLinux(num_adapter));
62                 num_adapter++;
63         }
64         
65         eDebug("found %d adapter, %d frontends and %d demux", 
66                 m_adapter.size(), m_frontend.size(), m_demux.size());
67
68         CONNECT(m_releaseCachedChannelTimer.timeout, eDVBResourceManager::releaseCachedChannel);
69 }
70
71
72 DEFINE_REF(eDVBAdapterLinux);
73 eDVBAdapterLinux::eDVBAdapterLinux(int nr): m_nr(nr)
74 {
75                 // scan frontends
76         int num_fe = 0;
77         
78         eDebug("scanning for frontends..");
79         while (1)
80         {
81                 struct stat s;
82                 char filename[128];
83 #if HAVE_DVB_API_VERSION < 3
84                 sprintf(filename, "/dev/dvb/card%d/frontend%d", m_nr, num_fe);
85 #else
86                 sprintf(filename, "/dev/dvb/adapter%d/frontend%d", m_nr, num_fe);
87 #endif
88                 if (stat(filename, &s))
89                         break;
90                 ePtr<eDVBFrontend> fe;
91
92                 int ok = 0;
93                 fe = new eDVBFrontend(m_nr, num_fe, ok);
94                 if (ok)
95                         m_frontend.push_back(fe);
96                 ++num_fe;
97         }
98         
99                 // scan demux
100         int num_demux = 0;
101         while (1)
102         {
103                 struct stat s;
104                 char filename[128];
105 #if HAVE_DVB_API_VERSION < 3
106                 sprintf(filename, "/dev/dvb/card%d/demux%d", m_nr, num_demux);
107 #else
108                 sprintf(filename, "/dev/dvb/adapter%d/demux%d", m_nr, num_demux);
109 #endif
110                 if (stat(filename, &s))
111                         break;
112                 ePtr<eDVBDemux> demux;
113                 
114                 demux = new eDVBDemux(m_nr, num_demux);
115                 m_demux.push_back(demux);
116                         
117                 ++num_demux;
118         }
119 }
120
121 int eDVBAdapterLinux::getNumDemux()
122 {
123         return m_demux.size();
124 }
125
126 RESULT eDVBAdapterLinux::getDemux(ePtr<eDVBDemux> &demux, int nr)
127 {
128         eSmartPtrList<eDVBDemux>::iterator i(m_demux.begin());
129         while (nr && (i != m_demux.end()))
130         {
131                 --nr;
132                 ++i;
133         }
134         
135         if (i != m_demux.end())
136                 demux = *i;
137         else
138                 return -1;
139                 
140         return 0;
141 }
142
143 int eDVBAdapterLinux::getNumFrontends()
144 {
145         return m_frontend.size();
146 }
147
148 RESULT eDVBAdapterLinux::getFrontend(ePtr<eDVBFrontend> &fe, int nr)
149 {
150         eSmartPtrList<eDVBFrontend>::iterator i(m_frontend.begin());
151         while (nr && (i != m_frontend.end()))
152         {
153                 --nr;
154                 ++i;
155         }
156         
157         if (i != m_frontend.end())
158                 fe = *i;
159         else
160                 return -1;
161                 
162         return 0;
163 }
164
165 int eDVBAdapterLinux::exist(int nr)
166 {
167         struct stat s;
168         char filename[128];
169 #if HAVE_DVB_API_VERSION < 3
170         sprintf(filename, "/dev/dvb/card%d", nr);
171 #else
172         sprintf(filename, "/dev/dvb/adapter%d", nr);
173 #endif
174         if (!stat(filename, &s))
175                 return 1;
176         return 0;
177 }
178
179 eDVBResourceManager::~eDVBResourceManager()
180 {
181         if (instance == this)
182                 instance = 0;
183 }
184
185 void eDVBResourceManager::addAdapter(iDVBAdapter *adapter)
186 {
187         int num_fe = adapter->getNumFrontends();
188         int num_demux = adapter->getNumDemux();
189         
190         m_adapter.push_back(adapter);
191         
192         int i;
193         for (i=0; i<num_demux; ++i)
194         {
195                 ePtr<eDVBDemux> demux;
196                 if (!adapter->getDemux(demux, i))
197                         m_demux.push_back(new eDVBRegisteredDemux(demux, adapter));
198         }
199
200         for (i=0; i<num_fe; ++i)
201         {
202                 ePtr<eDVBFrontend> frontend;
203
204                 if (!adapter->getFrontend(frontend, i))
205                 {
206                         frontend->setSEC(m_sec);
207                         m_frontend.push_back(new eDVBRegisteredFrontend(frontend, adapter));
208                 }
209         }
210 }
211
212 RESULT eDVBResourceManager::allocateFrontend(ePtr<eDVBAllocatedFrontend> &fe, ePtr<iDVBFrontendParameters> &feparm)
213 {
214         ePtr<eDVBRegisteredFrontend> best;
215         int bestval = 0;
216
217         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
218                 if (!i->m_inuse)
219                 {
220                         int c = i->m_frontend->isCompatibleWith(feparm);
221                         if (c > bestval)
222                         {
223                                 bestval = c;
224                                 best = i;
225                         }
226                 }
227
228         if (best)
229         {
230                 fe = new eDVBAllocatedFrontend(best);
231                 return 0;
232         }
233         
234         fe = 0;
235         
236         return -1;
237 }
238
239 RESULT eDVBResourceManager::allocateFrontendByIndex(ePtr<eDVBAllocatedFrontend> &fe, int nr)
240 {
241         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i, --nr)
242                 if ((!nr) && !i->m_inuse)
243                 {
244                         fe = new eDVBAllocatedFrontend(i);
245                         return 0;
246                 }
247         
248         fe = 0;
249         return -1;
250 }
251
252 RESULT eDVBResourceManager::allocateDemux(eDVBRegisteredFrontend *fe, ePtr<eDVBAllocatedDemux> &demux, int cap)
253 {
254                 /* find first unused demux which is on same adapter as frontend (or any, if PVR)
255                    never use the first one unless we need a decoding demux. */
256
257         eDebug("allocate demux");
258         eSmartPtrList<eDVBRegisteredDemux>::iterator i(m_demux.begin());
259         
260         if (i == m_demux.end())
261                 return -1;
262                 
263         int n=0;
264                 /* FIXME: hardware demux policy */
265         if (!(cap & iDVBChannel::capDecode))
266                 ++i, ++n;
267         
268         for (; i != m_demux.end(); ++i, ++n)
269                 if ((!i->m_inuse) && ((!fe) || (i->m_adapter == fe->m_adapter)))
270                 {
271                         if ((cap & iDVBChannel::capDecode) && n)
272                                 continue;
273                         
274                         demux = new eDVBAllocatedDemux(i);
275                         if (fe)
276                                 demux->get().setSourceFrontend(fe->m_frontend->getID());
277                         else
278                                 demux->get().setSourcePVR(0);
279                         return 0;
280                 }
281         eDebug("demux not found");
282         return -1;
283 }
284
285 RESULT eDVBResourceManager::setChannelList(iDVBChannelList *list)
286 {
287         m_list = list;
288         return 0;
289 }
290
291 RESULT eDVBResourceManager::getChannelList(ePtr<iDVBChannelList> &list)
292 {
293         list = m_list;
294         if (list)
295                 return 0;
296         else
297                 return -ENOENT;
298 }
299
300 RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUsePtr<iDVBChannel> &channel)
301 {
302                 /* first, check if a channel is already existing. */
303
304         if (m_cached_channel)
305         {
306                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
307                 if(channelid==cache_chan->getChannelID())
308                 {
309                         eDebug("use cached_channel");
310                         channel = m_cached_channel;
311                         return 0;
312                 }
313                 m_cached_channel_state_changed_conn.disconnect();
314                 m_cached_channel=0;
315                 m_releaseCachedChannelTimer.stop();
316         }
317
318 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
319         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
320         {
321 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
322                 if (i->m_channel_id == channelid)
323                 {
324 //                      eDebug("found shared channel..");
325                         channel = i->m_channel;
326                         return 0;
327                 }
328         }
329         
330         /* no currently available channel is tuned to this channelid. create a new one, if possible. */
331
332         if (!m_list)
333         {
334                 eDebug("no channel list set!");
335                 return -ENOENT;
336         }
337
338         ePtr<iDVBFrontendParameters> feparm;
339         if (m_list->getChannelFrontendData(channelid, feparm))
340         {
341                 eDebug("channel not found!");
342                 return -ENOENT;
343         }
344
345         /* allocate a frontend. */
346         
347         ePtr<eDVBAllocatedFrontend> fe;
348         
349         if (allocateFrontend(fe, feparm))
350                 return errNoFrontend;
351
352         RESULT res;
353         ePtr<eDVBChannel> ch;
354         ch = new eDVBChannel(this, fe);
355
356         res = ch->setChannel(channelid, feparm);
357         if (res)
358         {
359                 channel = 0;
360                 return errChidNotFound;
361         }
362         m_cached_channel = channel = ch;
363         m_cached_channel_state_changed_conn =
364                 CONNECT(ch->m_stateChanged,eDVBResourceManager::DVBChannelStateChanged);
365
366         return 0;
367 }
368
369 void eDVBResourceManager::DVBChannelStateChanged(iDVBChannel *chan)
370 {
371         int state=0;
372         chan->getState(state);
373         switch (state)
374         {
375                 case iDVBChannel::state_release:
376                 case iDVBChannel::state_ok:
377                 {
378                         eDebug("stop release channel timer");
379                         m_releaseCachedChannelTimer.stop();
380                         break;
381                 }
382                 case iDVBChannel::state_last_instance:
383                 {
384                         eDebug("start release channel timer");
385                         m_releaseCachedChannelTimer.start(3000, true);
386                         break;
387                 }
388                 default: // ignore all other events
389                         break;
390         }
391 }
392
393 void eDVBResourceManager::releaseCachedChannel()
394 {
395         eDebug("release cached channel (timer timeout)");
396         m_cached_channel=0;
397 }
398
399 RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
400 {
401         ePtr<eDVBAllocatedFrontend> fe;
402
403         if (m_cached_channel)
404         {
405                 m_cached_channel_state_changed_conn.disconnect();
406                 m_cached_channel=0;
407                 m_releaseCachedChannelTimer.stop();
408         }
409
410         if (allocateFrontendByIndex(fe, frontend_index))
411                 return errNoFrontend;
412         
413         eDVBChannel *ch;
414         ch = new eDVBChannel(this, fe);
415
416         channel = ch;
417         return 0;
418 }
419
420
421 RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
422 {
423         ePtr<eDVBAllocatedDemux> demux;
424
425         eDVBChannel *ch;
426         ch = new eDVBChannel(this, 0);
427         
428         channel = ch;
429         return 0;
430 }
431
432 RESULT eDVBResourceManager::addChannel(const eDVBChannelID &chid, eDVBChannel *ch)
433 {
434         m_active_channels.push_back(active_channel(chid, ch));
435         /* emit */ m_channelAdded(ch);
436         return 0;
437 }
438
439 RESULT eDVBResourceManager::removeChannel(eDVBChannel *ch)
440 {
441         int cnt = 0;
442         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end();)
443         {
444                 if (i->m_channel == ch)
445                 {
446                         i = m_active_channels.erase(i);
447                         ++cnt;
448                 } else
449                         ++i;
450         }
451         ASSERT(cnt == 1);
452         if (cnt == 1)
453                 return 0;
454         return -ENOENT;
455 }
456
457 RESULT eDVBResourceManager::connectChannelAdded(const Slot1<void,eDVBChannel*> &channelAdded, ePtr<eConnection> &connection)
458 {
459         connection = new eConnection((eDVBResourceManager*)this, m_channelAdded.connect(channelAdded));
460         return 0;
461 }
462
463 bool eDVBResourceManager::canAllocateFrontend(ePtr<iDVBFrontendParameters> &feparm)
464 {
465         ePtr<eDVBRegisteredFrontend> best;
466         int bestval = 0;
467
468         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator i(m_frontend.begin()); i != m_frontend.end(); ++i)
469                 if (!i->m_inuse)
470                 {
471                         int c = i->m_frontend->isCompatibleWith(feparm);
472                         if (c > bestval)
473                                 bestval = c;
474                 }
475
476         return bestval>0;
477 }
478
479 bool eDVBResourceManager::canAllocateChannel(const eDVBChannelID &channelid, const eDVBChannelID& ignore)
480 {
481         bool ret=true;
482         if (m_cached_channel)
483         {
484                 eDVBChannel *cache_chan = (eDVBChannel*)&(*m_cached_channel);
485                 if(channelid==cache_chan->getChannelID())
486                         return ret;
487         }
488
489                 /* first, check if a channel is already existing. */
490 //      eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
491         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
492         {
493 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
494                 if (i->m_channel_id == channelid)
495                 {
496 //                      eDebug("found shared channel..");
497                         return ret;
498                 }
499         }
500
501         int *decremented_cached_channel_fe_usecount=NULL,
502                 *decremented_fe_usecount=NULL;
503
504         for (std::list<active_channel>::iterator i(m_active_channels.begin()); i != m_active_channels.end(); ++i)
505         {
506 //              eDebug("available channel.. %04x:%04x", i->m_channel_id.transport_stream_id.get(), i->m_channel_id.original_network_id.get());
507                 if (i->m_channel_id == ignore)
508                 {
509                         eDVBChannel *channel = (eDVBChannel*) &(*i->m_channel);
510                         if (channel == &(*m_cached_channel) ? channel->getUseCount() == 2 : channel->getUseCount() == 1)  // channel only used once..
511                         {
512                                 ePtr<iDVBFrontend> fe;
513                                 if (!i->m_channel->getFrontend(fe))
514                                 {
515                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
516                                         {
517                                                 if ( &(*fe) == &(*ii->m_frontend) )
518                                                 {
519                                                         --ii->m_inuse;
520                                                         decremented_fe_usecount = &ii->m_inuse;
521                                                         if (channel == &(*m_cached_channel))
522                                                                 decremented_cached_channel_fe_usecount = decremented_fe_usecount;
523                                                         break;
524                                                 }
525                                         }
526                                 }
527                         }
528                         break;
529                 }
530         }
531
532         if (!decremented_cached_channel_fe_usecount)
533         {
534                 if (m_cached_channel)
535                 {
536                         eDVBChannel *channel = (eDVBChannel*) &(*m_cached_channel);
537                         if (channel->getUseCount() == 1)
538                         {
539                                 ePtr<iDVBFrontend> fe;
540                                 if (!channel->getFrontend(fe))
541                                 {
542                                         for (eSmartPtrList<eDVBRegisteredFrontend>::iterator ii(m_frontend.begin()); ii != m_frontend.end(); ++ii)
543                                         {
544                                                 if ( &(*fe) == &(*ii->m_frontend) )
545                                                 {
546                                                         --ii->m_inuse;
547                                                         decremented_cached_channel_fe_usecount = &ii->m_inuse;
548                                                         break;
549                                                 }
550                                         }
551                                 }
552                         }
553                 }
554         }
555         else
556                 decremented_cached_channel_fe_usecount=NULL;
557
558         ePtr<iDVBFrontendParameters> feparm;
559
560         if (!m_list)
561         {
562                 eDebug("no channel list set!");
563                 ret = false;
564                 goto error;
565         }
566
567         if (m_list->getChannelFrontendData(channelid, feparm))
568         {
569                 eDebug("channel not found!");
570                 ret = false;
571                 goto error;
572         }
573
574         ret = canAllocateFrontend(feparm);
575
576 error:
577         if (decremented_fe_usecount)
578                 ++(*decremented_fe_usecount);
579         if (decremented_cached_channel_fe_usecount)
580                 ++(*decremented_cached_channel_fe_usecount);
581
582         return ret;
583 }
584
585 DEFINE_REF(eDVBChannel);
586
587 eDVBChannel::eDVBChannel(eDVBResourceManager *mgr, eDVBAllocatedFrontend *frontend): m_state(state_idle), m_mgr(mgr)
588 {
589         m_frontend = frontend;
590
591         m_pvr_thread = 0;
592         
593         m_skipmode_n = m_skipmode_m = 0;
594         
595         if (m_frontend)
596                 m_frontend->get().connectStateChange(slot(*this, &eDVBChannel::frontendStateChanged), m_conn_frontendStateChanged);
597 }
598
599 eDVBChannel::~eDVBChannel()
600 {
601         if (m_channel_id)
602                 m_mgr->removeChannel(this);
603
604         stopFile();
605 }
606
607 void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
608 {
609         int state, ourstate = 0;
610         
611                 /* if we are already in shutdown, don't change state. */
612         if (m_state == state_release)
613                 return;
614         
615         if (fe->getState(state))
616                 return;
617         
618         if (state == iDVBFrontend::stateLock)
619         {
620                 eDebug("OURSTATE: ok");
621                 ourstate = state_ok;
622         } else if (state == iDVBFrontend::stateTuning)
623         {
624                 eDebug("OURSTATE: tuning");
625                 ourstate = state_tuning;
626         } else if (state == iDVBFrontend::stateLostLock)
627         {
628                         /* on managed channels, we try to retune in order to re-acquire lock. */
629                 if (m_feparm)
630                 {
631                         eDebug("OURSTATE: lost lock, trying to retune");
632                         ourstate = state_tuning;
633                         m_frontend->get().tune(*m_feparm);
634                 } else
635                         /* on unmanaged channels, we don't do this. the client will do this. */
636                 {
637                         eDebug("OURSTATE: lost lock, unavailable now.");
638                         ourstate = state_unavailable;
639                 }
640         } else if (state == iDVBFrontend::stateFailed)
641         {
642                 eDebug("OURSTATE: failed");
643                 ourstate = state_failed;
644         } else
645                 eFatal("state unknown");
646         
647         if (ourstate != m_state)
648         {
649                 m_state = ourstate;
650                 m_stateChanged(this);
651         }
652 }
653
654 void eDVBChannel::pvrEvent(int event)
655 {
656         switch (event)
657         {
658         case eFilePushThread::evtEOF:
659                 eDebug("eDVBChannel: End of file!");
660                 m_event(this, evtEOF);
661                 break;
662         case eFilePushThread::evtUser: /* start */
663                 eDebug("SOF");
664                 m_event(this, evtSOF);
665                 break;
666         }
667 }
668
669 void eDVBChannel::cueSheetEvent(int event)
670 {
671         switch (event)
672         {
673         case eCueSheet::evtSeek:
674                 eDebug("seek.");
675                 flushPVR(m_cue->m_decoding_demux);
676                 break;
677         case eCueSheet::evtSkipmode:
678         {
679                 {
680                         eSingleLocker l(m_cue->m_lock);
681                         m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
682                         if (m_cue->m_skipmode_ratio)
683                         {
684                                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
685                                 eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
686                                                 /* i agree that this might look a bit like black magic. */
687                                 m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
688                                 m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio;
689         
690                                 eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
691                                 
692                                 if (abs(m_skipmode_m) < abs(m_skipmode_n))
693                                 {
694                                         eFatal("damn, something is wrong with this calculation");
695                                         m_skipmode_n = m_skipmode_m = 0;
696                                 }
697                                 
698                         } else
699                         {
700                                 eDebug("skipmode ratio is 0, normal play");
701                                 m_skipmode_n = m_skipmode_m = 0;
702                         }
703                 }
704                 flushPVR(m_cue->m_decoding_demux);
705                 break;
706         }
707         case eCueSheet::evtSpanChanged:
708                 eDebug("source span translation not yet supported");
709         //      recheckCuesheetSpans();
710                 break;
711         }
712 }
713
714         /* remember, this gets called from another thread. */
715 void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off_t &start, size_t &size)
716 {
717         unsigned int max = 10*1024*1024;
718         
719         if (!m_cue)
720         {
721                 eDebug("no cue sheet. forcing normal play");
722                 start = current_offset;
723                 size = max;
724                 return;
725         }
726
727         eSingleLocker l(m_cue->m_lock);
728         
729         if (!m_cue->m_decoding_demux)
730         {
731                 start = current_offset;
732                 size = max;
733                 eDebug("getNextSourceSpan, no decoding demux. forcing normal play");
734                 return;
735         }
736         
737         if (m_skipmode_n)
738         {
739                 eDebug("skipmode %d:%d", m_skipmode_m, m_skipmode_n);
740                 max = m_skipmode_n;
741         }
742         
743         eDebug("getNextSourceSpan, current offset is %08llx!", current_offset);
744         
745         if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
746         {
747                 eDebug("reached SOF");
748                 m_skipmode_m = 0;
749                 m_pvr_thread->sendEvent(eFilePushThread::evtUser);
750         }
751         
752         current_offset += m_skipmode_m;
753         
754         while (!m_cue->m_seek_requests.empty())
755         {
756                 std::pair<int, pts_t> seek = m_cue->m_seek_requests.front();
757                 m_cue->m_seek_requests.pop_front();
758                 int relative = seek.first;
759                 pts_t pts = seek.second;
760
761                 int bitrate = m_tstools.calcBitrate(); /* in bits/s */
762         
763                 if (bitrate == -1)
764                         continue;
765         
766                 if (relative)
767                 {
768                         pts_t now;
769                         if (!m_cue->m_decoder)
770                         {
771                                 eDebug("no decoder - can't seek relative");
772                                 continue;
773                         }
774                         if (m_cue->m_decoder->getPTS(0, now))
775                         {
776                                 eDebug("decoder getPTS failed, can't seek relative");
777                                 continue;
778                         }
779                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
780                         {
781                                 eDebug("seekTo: getCurrentPosition failed!");
782                                 continue;
783                         }
784                         pts += now;
785                 }
786         
787                 if (pts < 0)
788                         pts = 0;
789         
790                 off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
791                 
792                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
793                 current_offset = offset;
794         }
795         
796         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
797         {
798                 if ((current_offset >= i->first) && (current_offset < i->second))
799                 {
800                         start = current_offset;
801                         size = i->second - current_offset;
802                         if (size > max)
803                                 size = max;
804                         eDebug("HIT, %lld < %lld < %lld", i->first, current_offset, i->second);
805                         return;
806                 }
807                 if (current_offset < i->first)
808                 {
809                         start = i->first;
810                         size = i->second - i->first;
811                         if (size > max)
812                                 size = max;
813                         eDebug("skip");
814                         return;
815                 }
816         }
817         
818         start = current_offset;
819         size = max;
820         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
821         
822         if (size < 4096)
823                 eFatal("blub");
824         return;
825 }
826
827 void eDVBChannel::AddUse()
828 {
829         if (++m_use_count > 1 && m_state == state_last_instance)
830         {
831                 m_state = state_ok;
832                 m_stateChanged(this);
833         }
834 }
835
836 void eDVBChannel::ReleaseUse()
837 {
838         if (!--m_use_count)
839         {
840                 m_state = state_release;
841                 m_stateChanged(this);
842         }
843         else if (m_use_count == 1)
844         {
845                 m_state = state_last_instance;
846                 m_stateChanged(this);
847         }
848 }
849
850 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
851 {
852         if (m_channel_id)
853                 m_mgr->removeChannel(this);
854                 
855         if (!channelid)
856                 return 0;
857
858         if (!m_frontend)
859         {
860                 eDebug("no frontend to tune!");
861                 return -ENODEV;
862         }
863         
864         m_channel_id = channelid;
865         m_mgr->addChannel(channelid, this);
866         m_state = state_tuning;
867                         /* if tuning fails, shutdown the channel immediately. */
868         int res;
869         res = m_frontend->get().tune(*feparm);
870         m_feparm = feparm;
871         
872         if (res)
873         {
874                 m_state = state_release;
875                 m_stateChanged(this);
876                 return res;
877         }
878         
879         return 0;
880 }
881
882 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
883 {
884         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
885         return 0;
886 }
887
888 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
889 {
890         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
891         return 0;
892 }
893
894 RESULT eDVBChannel::getState(int &state)
895 {
896         state = m_state;
897         return 0;
898 }
899
900 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
901 {
902         return -1;
903 }
904
905 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
906 {
907         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
908         
909         if (!our_demux)
910         {
911                 demux = 0;
912                 
913                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
914                         return -1;
915         }
916         
917         demux = *our_demux;
918                 /* don't hold a reference to the decoding demux, we don't need it. */
919         if (cap & capDecode)
920                 our_demux = 0;
921         return 0;
922 }
923
924 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
925 {
926         frontend = &m_frontend->get();
927         if (frontend)
928                 return 0;
929         else
930                 return -ENODEV;
931 }
932
933 RESULT eDVBChannel::playFile(const char *file)
934 {
935         ASSERT(!m_frontend);
936         if (m_pvr_thread)
937         {
938                 m_pvr_thread->stop();
939                 delete m_pvr_thread;
940                 m_pvr_thread = 0;
941         }
942         
943         m_tstools.openFile(file);
944         
945                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
946                    THEN DO A REAL FIX HERE! */
947         
948                 /* (this codepath needs to be improved anyway.) */
949         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
950         if (m_pvr_fd_dst < 0)
951         {
952                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
953                 return -ENODEV;
954         }
955         
956         m_pvr_fd_src = open(file, O_RDONLY|O_LARGEFILE);
957         if (m_pvr_fd_src < 0)
958         {
959                 eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
960                 close(m_pvr_fd_dst);
961                 return -ENOENT;
962         }
963         
964         m_state = state_ok;
965         m_stateChanged(this);
966         
967         m_pvr_thread = new eFilePushThread();
968         m_pvr_thread->enablePVRCommit(1);
969         m_pvr_thread->setScatterGather(this);
970
971         m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
972         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
973
974         return 0;
975 }
976
977 void eDVBChannel::stopFile()
978 {
979         if (m_pvr_thread)
980         {
981                 m_pvr_thread->stop();
982                 ::close(m_pvr_fd_src);
983                 ::close(m_pvr_fd_dst);
984                 delete m_pvr_thread;
985                 m_pvr_thread = 0;
986         }
987 }
988
989 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
990 {
991         m_conn_cueSheetEvent = 0;
992         m_cue = cuesheet;
993         if (m_cue)
994                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
995 }
996
997 RESULT eDVBChannel::getLength(pts_t &len)
998 {
999         return m_tstools.calcLen(len);
1000 }
1001
1002 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
1003 {
1004         if (!decoding_demux)
1005                 return -1;
1006         
1007         pts_t now;
1008         
1009         int r;
1010         
1011         if (mode == 0) /* demux */
1012         {
1013                 r = decoding_demux->getSTC(now, 0);
1014                 if (r)
1015                 {
1016                         eDebug("demux getSTC failed");
1017                         return -1;
1018                 }
1019         } else
1020                 now = pos; /* fixup supplied */
1021         
1022         off_t off = 0; /* TODO: fixme */
1023         r = m_tstools.fixupPTS(off, now);
1024         if (r)
1025         {
1026                 eDebug("fixup PTS failed");
1027                 return -1;
1028         }
1029         
1030         pos = now;
1031         
1032         return 0;
1033 }
1034
1035 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
1036 {
1037                         /* when seeking, we have to ensure that all buffers are flushed.
1038                            there are basically 3 buffers:
1039                            a.) the filepush's internal buffer
1040                            b.) the PVR buffer (before demux)
1041                            c.) the ratebuffer (after demux)
1042                            
1043                            it's important to clear them in the correct order, otherwise
1044                            the ratebuffer (for example) would immediately refill from
1045                            the not-yet-flushed PVR buffer.
1046                         */
1047
1048         m_pvr_thread->pause();
1049                 /* flush internal filepush buffer */
1050         m_pvr_thread->flush();
1051                 /* HACK: flush PVR buffer */
1052         ::ioctl(m_pvr_fd_dst, 0);
1053         
1054                 /* flush ratebuffers (video, audio) */
1055         if (decoding_demux)
1056                 decoding_demux->flush();
1057
1058                 /* demux will also flush all decoder.. */
1059                 /* resume will re-query the SG */
1060         m_pvr_thread->resume();
1061 }
1062
1063 DEFINE_REF(eCueSheet);
1064
1065 eCueSheet::eCueSheet()
1066 {
1067         m_skipmode_ratio = 0;
1068 }
1069
1070 void eCueSheet::seekTo(int relative, const pts_t &pts)
1071 {
1072         {
1073                 eSingleLock l(m_lock);
1074                 m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1075         }
1076         m_event(evtSeek);
1077 }
1078         
1079 void eCueSheet::clear()
1080 {
1081         eSingleLock l(m_lock);
1082         m_spans.clear();
1083 }
1084
1085 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1086 {
1087         {
1088                 eSingleLock l(m_lock);
1089                 m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1090         }
1091         m_event(evtSpanChanged);
1092 }
1093
1094 void eCueSheet::setSkipmode(const pts_t &ratio)
1095 {
1096         {
1097                 eSingleLock l(m_lock);
1098                 m_skipmode_ratio = ratio;
1099         }
1100         m_event(evtSkipmode);
1101 }
1102
1103 void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
1104 {
1105         m_decoding_demux = demux;
1106         m_decoder = decoder;
1107 }
1108
1109 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1110 {
1111         connection = new eConnection(this, m_event.connect(event));
1112         return 0;
1113 }