11b1285a702d7cbec6dd6b8ed41137bbe0db1d56
[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                                         /* we're using the decoder's timestamp here. this 
770                                            won't work for radio (ouch). */
771                         if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
772                         {
773                                 eDebug("seekTo: getCurrentPosition failed!");
774                                 continue;
775                         }
776                         pts += now;
777                 }
778         
779                 if (pts < 0)
780                         pts = 0;
781         
782                 off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
783                 
784                 eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
785                 current_offset = offset;
786         }
787         
788         for (std::list<std::pair<off_t, off_t> >::const_iterator i(m_source_span.begin()); i != m_source_span.end(); ++i)
789         {
790                 if ((current_offset >= i->first) && (current_offset < i->second))
791                 {
792                         start = current_offset;
793                         size = i->second - current_offset;
794                         if (size > max)
795                                 size = max;
796                         eDebug("HIT, %lld < %lld < %lld", i->first, current_offset, i->second);
797                         return;
798                 }
799                 if (current_offset < i->first)
800                 {
801                         start = i->first;
802                         size = i->second - i->first;
803                         if (size > max)
804                                 size = max;
805                         eDebug("skip");
806                         return;
807                 }
808         }
809         
810         start = current_offset;
811         size = max;
812         eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
813         
814         if (size < 4096)
815                 eFatal("blub");
816         return;
817 }
818
819 void eDVBChannel::AddUse()
820 {
821         if (++m_use_count > 1 && m_state == state_last_instance)
822         {
823                 m_state = state_ok;
824                 m_stateChanged(this);
825         }
826 }
827
828 void eDVBChannel::ReleaseUse()
829 {
830         if (!--m_use_count)
831         {
832                 m_state = state_release;
833                 m_stateChanged(this);
834         }
835         else if (m_use_count == 1)
836         {
837                 m_state = state_last_instance;
838                 m_stateChanged(this);
839         }
840 }
841
842 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
843 {
844         if (m_channel_id)
845                 m_mgr->removeChannel(this);
846                 
847         if (!channelid)
848                 return 0;
849
850         if (!m_frontend)
851         {
852                 eDebug("no frontend to tune!");
853                 return -ENODEV;
854         }
855         
856         m_channel_id = channelid;
857         m_mgr->addChannel(channelid, this);
858         m_state = state_tuning;
859                         /* if tuning fails, shutdown the channel immediately. */
860         int res;
861         res = m_frontend->get().tune(*feparm);
862         m_feparm = feparm;
863         
864         if (res)
865         {
866                 m_state = state_release;
867                 m_stateChanged(this);
868                 return res;
869         }
870         
871         return 0;
872 }
873
874 RESULT eDVBChannel::connectStateChange(const Slot1<void,iDVBChannel*> &stateChange, ePtr<eConnection> &connection)
875 {
876         connection = new eConnection((iDVBChannel*)this, m_stateChanged.connect(stateChange));
877         return 0;
878 }
879
880 RESULT eDVBChannel::connectEvent(const Slot2<void,iDVBChannel*,int> &event, ePtr<eConnection> &connection)
881 {
882         connection = new eConnection((iDVBChannel*)this, m_event.connect(event));
883         return 0;
884 }
885
886 RESULT eDVBChannel::getState(int &state)
887 {
888         state = m_state;
889         return 0;
890 }
891
892 RESULT eDVBChannel::setCIRouting(const eDVBCIRouting &routing)
893 {
894         return -1;
895 }
896
897 RESULT eDVBChannel::getDemux(ePtr<iDVBDemux> &demux, int cap)
898 {
899         ePtr<eDVBAllocatedDemux> &our_demux = (cap & capDecode) ? m_decoder_demux : m_demux;
900         
901         if (!our_demux)
902         {
903                 demux = 0;
904                 
905                 if (m_mgr->allocateDemux(m_frontend ? (eDVBRegisteredFrontend*)*m_frontend : (eDVBRegisteredFrontend*)0, our_demux, cap))
906                         return -1;
907         }
908         
909         demux = *our_demux;
910                 /* don't hold a reference to the decoding demux, we don't need it. */
911         if (cap & capDecode)
912                 our_demux = 0;
913         return 0;
914 }
915
916 RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
917 {
918         frontend = &m_frontend->get();
919         if (frontend)
920                 return 0;
921         else
922                 return -ENODEV;
923 }
924
925 RESULT eDVBChannel::playFile(const char *file)
926 {
927         ASSERT(!m_frontend);
928         if (m_pvr_thread)
929         {
930                 m_pvr_thread->stop();
931                 delete m_pvr_thread;
932                 m_pvr_thread = 0;
933         }
934         
935         m_tstools.openFile(file);
936         
937                 /* DON'T EVEN THINK ABOUT FIXING THIS. FIX THE ATI SOURCES FIRST,
938                    THEN DO A REAL FIX HERE! */
939         
940                 /* (this codepath needs to be improved anyway.) */
941         m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
942         if (m_pvr_fd_dst < 0)
943         {
944                 eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
945                 return -ENODEV;
946         }
947         
948         m_pvr_fd_src = open(file, O_RDONLY|O_LARGEFILE);
949         if (m_pvr_fd_src < 0)
950         {
951                 eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
952                 close(m_pvr_fd_dst);
953                 return -ENOENT;
954         }
955         
956         m_state = state_ok;
957         m_stateChanged(this);
958         
959         m_pvr_thread = new eFilePushThread();
960         m_pvr_thread->enablePVRCommit(1);
961         m_pvr_thread->setScatterGather(this);
962
963         m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
964         CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
965
966         return 0;
967 }
968
969 void eDVBChannel::stopFile()
970 {
971         if (m_pvr_thread)
972         {
973                 m_pvr_thread->stop();
974                 ::close(m_pvr_fd_src);
975                 ::close(m_pvr_fd_dst);
976                 delete m_pvr_thread;
977                 m_pvr_thread = 0;
978         }
979 }
980
981 void eDVBChannel::setCueSheet(eCueSheet *cuesheet)
982 {
983         m_conn_cueSheetEvent = 0;
984         m_cue = cuesheet;
985         if (m_cue)
986                 m_cue->connectEvent(slot(*this, &eDVBChannel::cueSheetEvent), m_conn_cueSheetEvent);
987 }
988
989 RESULT eDVBChannel::getLength(pts_t &len)
990 {
991         return m_tstools.calcLen(len);
992 }
993
994 RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, int mode)
995 {
996         if (!decoding_demux)
997                 return -1;
998         
999         pts_t now;
1000         int r;
1001                         /* TODO: this is a gross hack. */
1002         r = decoding_demux->getSTC(now, mode ? 128 : 0);
1003
1004         if (r)
1005         {
1006                 eDebug("demux getSTC failed");
1007                 return -1;
1008         }
1009         
1010         off_t off = 0; /* TODO: fixme */
1011         r = m_tstools.fixupPTS(off, now);
1012         if (r)
1013         {
1014                 eDebug("fixup PTS failed");
1015                 return -1;
1016         }
1017         
1018         pos = now;
1019         
1020         return 0;
1021 }
1022
1023 void eDVBChannel::flushPVR(iDVBDemux *decoding_demux)
1024 {
1025                         /* when seeking, we have to ensure that all buffers are flushed.
1026                            there are basically 3 buffers:
1027                            a.) the filepush's internal buffer
1028                            b.) the PVR buffer (before demux)
1029                            c.) the ratebuffer (after demux)
1030                            
1031                            it's important to clear them in the correct order, otherwise
1032                            the ratebuffer (for example) would immediately refill from
1033                            the not-yet-flushed PVR buffer.
1034                         */
1035
1036         m_pvr_thread->pause();
1037                 /* flush internal filepush buffer */
1038         m_pvr_thread->flush();
1039                 /* HACK: flush PVR buffer */
1040         ::ioctl(m_pvr_fd_dst, 0);
1041         
1042                 /* flush ratebuffers (video, audio) */
1043         if (decoding_demux)
1044                 decoding_demux->flush();
1045
1046                 /* demux will also flush all decoder.. */
1047                 /* resume will re-query the SG */
1048         m_pvr_thread->resume();
1049 }
1050
1051 DEFINE_REF(eCueSheet);
1052
1053 eCueSheet::eCueSheet()
1054 {
1055         m_skipmode_ratio = 0;
1056 }
1057
1058 void eCueSheet::seekTo(int relative, const pts_t &pts)
1059 {
1060         {
1061                 eSingleLock l(m_lock);
1062                 m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
1063         }
1064         m_event(evtSeek);
1065 }
1066         
1067 void eCueSheet::clear()
1068 {
1069         eSingleLock l(m_lock);
1070         m_spans.clear();
1071 }
1072
1073 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
1074 {
1075         {
1076                 eSingleLock l(m_lock);
1077                 m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
1078         }
1079         m_event(evtSpanChanged);
1080 }
1081
1082 void eCueSheet::setSkipmode(const pts_t &ratio)
1083 {
1084         {
1085                 eSingleLock l(m_lock);
1086                 m_skipmode_ratio = ratio;
1087         }
1088         m_event(evtSkipmode);
1089 }
1090
1091 void eCueSheet::setDecodingDemux(iDVBDemux *demux)
1092 {
1093         m_decoding_demux = demux;
1094 }
1095
1096 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)
1097 {
1098         connection = new eConnection(this, m_event.connect(event));
1099         return 0;
1100 }