summaryrefslogtreecommitdiff
path: root/dvbdevice.c
blob: cb36f7ae391f0c61f6ec73a7b10c0fc8b0ff86f1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
/*
 * dvbdevice.c: The DVB device tuner interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: dvbdevice.c 2.28 2010/02/07 13:21:05 kls Exp $
 */

#include "dvbdevice.h"
#include <errno.h>
#include <limits.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "channels.h"
#include "diseqc.h"
#include "dvbci.h"

#define DVBS_TUNE_TIMEOUT  9000 //ms
#define DVBS_LOCK_TIMEOUT  2000 //ms
#define DVBC_TUNE_TIMEOUT  9000 //ms
#define DVBC_LOCK_TIMEOUT  2000 //ms
#define DVBT_TUNE_TIMEOUT  9000 //ms
#define DVBT_LOCK_TIMEOUT  2000 //ms

// --- cDvbTuner -------------------------------------------------------------

class cDvbTuner : public cThread {
private:
  enum eTunerStatus { tsIdle, tsSet, tsTuned, tsLocked };
  int device;
  int fd_frontend;
  int adapter, frontend;
  int tuneTimeout;
  int lockTimeout;
  time_t lastTimeoutReport;
  fe_delivery_system frontendType;
  cChannel channel;
  const char *diseqcCommands;
  eTunerStatus tunerStatus;
  cMutex mutex;
  cCondVar locked;
  cCondVar newSet;
  bool GetFrontendStatus(fe_status_t &Status, int TimeoutMs = 0);
  bool SetFrontend(void);
  virtual void Action(void);
public:
  cDvbTuner(int Device, int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType);
  virtual ~cDvbTuner();
  const cChannel *GetTransponder(void) const { return &channel; }
  bool IsTunedTo(const cChannel *Channel) const;
  void Set(const cChannel *Channel);
  bool Locked(int TimeoutMs = 0);
  };

cDvbTuner::cDvbTuner(int Device, int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType)
{
  device = Device;
  fd_frontend = Fd_Frontend;
  adapter = Adapter;
  frontend = Frontend;
  frontendType = FrontendType;
  tuneTimeout = 0;
  lockTimeout = 0;
  lastTimeoutReport = 0;
  diseqcCommands = NULL;
  tunerStatus = tsIdle;
  if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
     CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
  SetDescription("tuner on frontend %d/%d", adapter, frontend);
  Start();
}

cDvbTuner::~cDvbTuner()
{
  tunerStatus = tsIdle;
  newSet.Broadcast();
  locked.Broadcast();
  Cancel(3);
}

bool cDvbTuner::IsTunedTo(const cChannel *Channel) const
{
  if (tunerStatus == tsIdle)
     return false; // not tuned to
  if (channel.Source() != Channel->Source() || channel.Transponder() != Channel->Transponder())
     return false; // sufficient mismatch
  char Type = **cSource::ToString(Channel->Source());
#define ST(s, p) if (strchr(s, Type)) if (channel.p() != Channel->p()) return false;
  // Polarization is already checked as part of the Transponder.
  ST("  T", Bandwidth);
  ST("CST", CoderateH);
  ST("  T", CoderateL);
  ST("  T", Guard);
  ST("CST", Inversion);
  ST("CST", Modulation);
  ST(" S ", RollOff);
  ST(" S ", System);
  ST("CS ", Srate);
  ST("  T", Transmission);
  ST("  T", Hierarchy);
  return true;
}

void cDvbTuner::Set(const cChannel *Channel)
{
  cMutexLock MutexLock(&mutex);
  if (!IsTunedTo(Channel))
     tunerStatus = tsSet;
  channel = *Channel;
  lastTimeoutReport = 0;
  newSet.Broadcast();
}

bool cDvbTuner::Locked(int TimeoutMs)
{
  bool isLocked = (tunerStatus >= tsLocked);
  if (isLocked || !TimeoutMs)
     return isLocked;

  cMutexLock MutexLock(&mutex);
  if (TimeoutMs && tunerStatus < tsLocked)
     locked.TimedWait(mutex, TimeoutMs);
  return tunerStatus >= tsLocked;
}

bool cDvbTuner::GetFrontendStatus(fe_status_t &Status, int TimeoutMs)
{
  if (TimeoutMs) {
     cPoller Poller(fd_frontend);
     if (Poller.Poll(TimeoutMs)) {
        dvb_frontend_event Event;
        while (ioctl(fd_frontend, FE_GET_EVENT, &Event) == 0)
              ; // just to clear the event queue - we'll read the actual status below
        }
     }
  while (1) {
        if (ioctl(fd_frontend, FE_READ_STATUS, &Status) != -1)
           return true;
        if (errno != EINTR)
           break;
        }
  return false;
}

static unsigned int FrequencyToHz(unsigned int f)
{
  while (f && f < 1000000)
        f *= 1000;
  return f;
}

bool cDvbTuner::SetFrontend(void)
{
#define MAXFRONTENDCMDS 16
#define SETCMD(c, d) { Frontend[CmdSeq.num].cmd = (c);\
                       Frontend[CmdSeq.num].u.data = (d);\
                       if (CmdSeq.num++ > MAXFRONTENDCMDS) {\
                          esyslog("ERROR: too many tuning commands on frontend %d/%d", adapter, frontend);\
                          return false;\
                          }\
                     }
  dtv_property Frontend[MAXFRONTENDCMDS];
  memset(&Frontend, 0, sizeof(Frontend));
  dtv_properties CmdSeq;
  memset(&CmdSeq, 0, sizeof(CmdSeq));
  CmdSeq.props = Frontend;
  SETCMD(DTV_CLEAR, 0);
  if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
     esyslog("ERROR: frontend %d/%d: %m", adapter, frontend);
     return false;
     }
  CmdSeq.num = 0;

  if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2) {
     unsigned int frequency = channel.Frequency();
     if (Setup.DiSEqC) {
        cDiseqc *diseqc = Diseqcs.Get(device, channel.Source(), channel.Frequency(), channel.Polarization());
        if (diseqc) {
           if (diseqc->Commands() && (!diseqcCommands || strcmp(diseqcCommands, diseqc->Commands()) != 0)) {
              cDiseqc::eDiseqcActions da;
              for (char *CurrentAction = NULL; (da = diseqc->Execute(&CurrentAction)) != cDiseqc::daNone; ) {
                  switch (da) {
                    case cDiseqc::daNone:      break;
                    case cDiseqc::daToneOff:   CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF)); break;
                    case cDiseqc::daToneOn:    CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_ON)); break;
                    case cDiseqc::daVoltage13: CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); break;
                    case cDiseqc::daVoltage18: CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_18)); break;
                    case cDiseqc::daMiniA:     CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_A)); break;
                    case cDiseqc::daMiniB:     CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_BURST, SEC_MINI_B)); break;
                    case cDiseqc::daCodes: {
                         int n = 0;
                         uchar *codes = diseqc->Codes(n);
                         if (codes) {
                            struct dvb_diseqc_master_cmd cmd;
                            cmd.msg_len = min(n, int(sizeof(cmd.msg)));
                            memcpy(cmd.msg, codes, cmd.msg_len);
                            CHECK(ioctl(fd_frontend, FE_DISEQC_SEND_MASTER_CMD, &cmd));
                            }
                         }
                         break;
                    default: esyslog("ERROR: unknown diseqc command %d", da);
                    }
                  }
              diseqcCommands = diseqc->Commands();
              }
           frequency -= diseqc->Lof();
           }
        else {
           esyslog("ERROR: no DiSEqC parameters found for channel %d", channel.Number());
           return false;
           }
        }
     else {
        int tone = SEC_TONE_OFF;
        if (frequency < (unsigned int)Setup.LnbSLOF) {
           frequency -= Setup.LnbFrequLo;
           tone = SEC_TONE_OFF;
           }
        else {
           frequency -= Setup.LnbFrequHi;
           tone = SEC_TONE_ON;
           }
        int volt = (channel.Polarization() == 'v' || channel.Polarization() == 'V' || channel.Polarization() == 'r' || channel.Polarization() == 'R') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;
        CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, volt));
        CHECK(ioctl(fd_frontend, FE_SET_TONE, tone));
        }
     frequency = abs(frequency); // Allow for C-band, where the frequency is less than the LOF

     // DVB-S/DVB-S2 (common parts)
     SETCMD(DTV_DELIVERY_SYSTEM, channel.System());
     SETCMD(DTV_FREQUENCY, frequency * 1000UL);
     SETCMD(DTV_MODULATION, channel.Modulation());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
     SETCMD(DTV_INNER_FEC, channel.CoderateH());
     SETCMD(DTV_INVERSION, channel.Inversion());
     if (channel.System() == SYS_DVBS2) {
        if (frontendType == SYS_DVBS2) {
           // DVB-S2
           SETCMD(DTV_PILOT, PILOT_AUTO);
           SETCMD(DTV_ROLLOFF, channel.RollOff());
           }
        else {
           esyslog("ERROR: frontend %d/%d doesn't provide DVB-S2", adapter, frontend);
           return false;
           }
        }
     else {
        // DVB-S
        SETCMD(DTV_ROLLOFF, ROLLOFF_35); // DVB-S always has a ROLLOFF of 0.35
        }

     tuneTimeout = DVBS_TUNE_TIMEOUT;
     lockTimeout = DVBS_LOCK_TIMEOUT;
     }
  else if (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B) {
     // DVB-C
     SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, channel.Inversion());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
     SETCMD(DTV_INNER_FEC, channel.CoderateH());
     SETCMD(DTV_MODULATION, channel.Modulation());

     tuneTimeout = DVBC_TUNE_TIMEOUT;
     lockTimeout = DVBC_LOCK_TIMEOUT;
     }
  else if (frontendType == SYS_DVBT) {
     // DVB-T
     SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, channel.Inversion());
     SETCMD(DTV_BANDWIDTH_HZ, channel.Bandwidth());
     SETCMD(DTV_CODE_RATE_HP, channel.CoderateH());
     SETCMD(DTV_CODE_RATE_LP, channel.CoderateL());
     SETCMD(DTV_MODULATION, channel.Modulation());
     SETCMD(DTV_TRANSMISSION_MODE, channel.Transmission());
     SETCMD(DTV_GUARD_INTERVAL, channel.Guard());
     SETCMD(DTV_HIERARCHY, channel.Hierarchy());

     tuneTimeout = DVBT_TUNE_TIMEOUT;
     lockTimeout = DVBT_LOCK_TIMEOUT;
     }
  else {
     esyslog("ERROR: attempt to set channel with unknown DVB frontend type");
     return false;
     }
  SETCMD(DTV_TUNE, 0);
  if (ioctl(fd_frontend, FE_SET_PROPERTY, &CmdSeq) < 0) {
     esyslog("ERROR: frontend %d/%d: %m", adapter, frontend);
     return false;
     }
  return true;
}

void cDvbTuner::Action(void)
{
  cTimeMs Timer;
  bool LostLock = false;
  fe_status_t Status = (fe_status_t)0;
  while (Running()) {
        fe_status_t NewStatus;
        if (GetFrontendStatus(NewStatus, 10))
           Status = NewStatus;
        cMutexLock MutexLock(&mutex);
        switch (tunerStatus) {
          case tsIdle:
               break;
          case tsSet:
               tunerStatus = SetFrontend() ? tsTuned : tsIdle;
               Timer.Set(tuneTimeout);
               continue;
          case tsTuned:
               if (Timer.TimedOut()) {
                  tunerStatus = tsSet;
                  diseqcCommands = NULL;
                  if (time(NULL) - lastTimeoutReport > 60) { // let's not get too many of these
                     isyslog("frontend %d/%d timed out while tuning to channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
                     lastTimeoutReport = time(NULL);
                     }
                  continue;
                  }
          case tsLocked:
               if (Status & FE_REINIT) {
                  tunerStatus = tsSet;
                  diseqcCommands = NULL;
                  isyslog("frontend %d/%d was reinitialized", adapter, frontend);
                  lastTimeoutReport = 0;
                  continue;
                  }
               else if (Status & FE_HAS_LOCK) {
                  if (LostLock) {
                     isyslog("frontend %d/%d regained lock on channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
                     LostLock = false;
                     }
                  tunerStatus = tsLocked;
                  locked.Broadcast();
                  lastTimeoutReport = 0;
                  }
               else if (tunerStatus == tsLocked) {
                  LostLock = true;
                  isyslog("frontend %d/%d lost lock on channel %d, tp %d", adapter, frontend, channel.Number(), channel.Transponder());
                  tunerStatus = tsTuned;
                  Timer.Set(lockTimeout);
                  lastTimeoutReport = 0;
                  continue;
                  }
               break;
          default: esyslog("ERROR: unknown tuner status %d", tunerStatus);
          }

        if (tunerStatus != tsTuned)
           newSet.TimedWait(mutex, 1000);
        }
}

// --- cDvbDevice ------------------------------------------------------------

int cDvbDevice::setTransferModeForDolbyDigital = 1;

const char *DeliverySystems[] = {
  "UNDEFINED",
  "DVB-C",
  "DVB-C",
  "DVB-T",
  "DSS",
  "DVB-S",
  "DVB-S2",
  "DVB-H",
  "ISDBT",
  "ISDBS",
  "ISDBC",
  "ATSC",
  "ATSCMH",
  "DMBTH",
  "CMMB",
  "DAB",
  NULL
  };

cDvbDevice::cDvbDevice(int Adapter, int Frontend)
{
  adapter = Adapter;
  frontend = Frontend;
  ciAdapter = NULL;
  dvbTuner = NULL;
  frontendType = SYS_UNDEFINED;
  numProvidedSystems = 0;

  // Devices that are present on all card types:

  int fd_frontend = DvbOpen(DEV_DVB_FRONTEND, adapter, frontend, O_RDWR | O_NONBLOCK);

  // Common Interface:

  fd_ca = DvbOpen(DEV_DVB_CA, adapter, frontend, O_RDWR);
  if (fd_ca >= 0)
     ciAdapter = cDvbCiAdapter::CreateCiAdapter(this, fd_ca);

  // The DVR device (will be opened and closed as needed):

  fd_dvr = -1;

  // We only check the devices that must be present - the others will be checked before accessing them://XXX

  if (fd_frontend >= 0) {
     if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) >= 0) {
        switch (frontendInfo.type) {
          case FE_QPSK: frontendType = (frontendInfo.caps & FE_CAN_2G_MODULATION) ? SYS_DVBS2 : SYS_DVBS; break;
          case FE_OFDM: frontendType = SYS_DVBT; break;
          case FE_QAM:  frontendType = SYS_DVBC_ANNEX_AC; break;
          case FE_ATSC: frontendType = SYS_ATSC; break;
          default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
          }
        }
     else
        LOG_ERROR;
     if (frontendType != SYS_UNDEFINED) {
        numProvidedSystems++;
        if (frontendType == SYS_DVBS2)
           numProvidedSystems++;
        isyslog("frontend %d/%d provides %s (\"%s\")", adapter, frontend, DeliverySystems[frontendType], frontendInfo.name);
        dvbTuner = new cDvbTuner(CardIndex() + 1, fd_frontend, adapter, frontend, frontendType);
        }
     }
  else
     esyslog("ERROR: can't open DVB device %d/%d", adapter, frontend);

  StartSectionHandler();
}

cDvbDevice::~cDvbDevice()
{
  StopSectionHandler();
  delete dvbTuner;
  delete ciAdapter;
  // We're not explicitly closing any device files here, since this sometimes
  // caused segfaults. Besides, the program is about to terminate anyway...
}

cString cDvbDevice::DvbName(const char *Name, int Adapter, int Frontend)
{
  return cString::sprintf("%s%d/%s%d", DEV_DVB_ADAPTER, Adapter, Name, Frontend);
}

int cDvbDevice::DvbOpen(const char *Name, int Adapter, int Frontend, int Mode, bool ReportError)
{
  cString FileName = DvbName(Name, Adapter, Frontend);
  int fd = open(FileName, Mode);
  if (fd < 0 && ReportError)
     LOG_ERROR_STR(*FileName);
  return fd;
}

bool cDvbDevice::Exists(int Adapter, int Frontend)
{
  cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
  if (access(FileName, F_OK) == 0) {
     int f = open(FileName, O_RDONLY);
     if (f >= 0) {
        close(f);
        return true;
        }
     else if (errno != ENODEV && errno != EINVAL)
        LOG_ERROR_STR(*FileName);
     }
  else if (errno != ENOENT)
     LOG_ERROR_STR(*FileName);
  return false;
}

bool cDvbDevice::Probe(int Adapter, int Frontend)
{
  cString FileName = DvbName(DEV_DVB_FRONTEND, Adapter, Frontend);
  dsyslog("probing %s", *FileName);
  for (cDvbDeviceProbe *dp = DvbDeviceProbes.First(); dp; dp = DvbDeviceProbes.Next(dp)) {
      if (dp->Probe(Adapter, Frontend))
         return true; // a plugin has created the actual device
      }
  dsyslog("creating cDvbDevice");
  new cDvbDevice(Adapter, Frontend); // it's a "budget" device
  return true;
}

bool cDvbDevice::Initialize(void)
{
  int Checked = 0;
  int Found = 0;
  for (int Adapter = 0; ; Adapter++) {
      for (int Frontend = 0; ; Frontend++) {
          if (Exists(Adapter, Frontend)) {
             if (Checked++ < MAXDVBDEVICES) {
                if (UseDevice(NextCardIndex())) {
                   if (Probe(Adapter, Frontend))
                      Found++;
                   }
                else
                   NextCardIndex(1); // skips this one
                }
             }
          else if (Frontend == 0)
             goto LastAdapter;
          else
             goto NextAdapter;
          }
      NextAdapter: ;
      }
LastAdapter:
  NextCardIndex(MAXDVBDEVICES - Checked); // skips the rest
  if (Found > 0)
     isyslog("found %d DVB device%s", Found, Found > 1 ? "s" : "");
  else
     isyslog("no DVB device found");
  return Found > 0;
}

bool cDvbDevice::Ready(void)
{
  if (ciAdapter)
     return ciAdapter->Ready();
  return true;
}

bool cDvbDevice::HasCi(void)
{
  return ciAdapter;
}

bool cDvbDevice::SetPid(cPidHandle *Handle, int Type, bool On)
{
  if (Handle->pid) {
     dmx_pes_filter_params pesFilterParams;
     memset(&pesFilterParams, 0, sizeof(pesFilterParams));
     if (On) {
        if (Handle->handle < 0) {
           Handle->handle = DvbOpen(DEV_DVB_DEMUX, adapter, frontend, O_RDWR | O_NONBLOCK, true);
           if (Handle->handle < 0) {
              LOG_ERROR;
              return false;
              }
           }
        pesFilterParams.pid     = Handle->pid;
        pesFilterParams.input   = DMX_IN_FRONTEND;
        pesFilterParams.output  = DMX_OUT_TS_TAP;
        pesFilterParams.pes_type= DMX_PES_OTHER;
        pesFilterParams.flags   = DMX_IMMEDIATE_START;
        if (ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
           LOG_ERROR;
           return false;
           }
        }
     else if (!Handle->used) {
        CHECK(ioctl(Handle->handle, DMX_STOP));
        if (Type <= ptTeletext) {
           pesFilterParams.pid     = 0x1FFF;
           pesFilterParams.input   = DMX_IN_FRONTEND;
           pesFilterParams.output  = DMX_OUT_DECODER;
           pesFilterParams.pes_type= DMX_PES_OTHER;
           pesFilterParams.flags   = DMX_IMMEDIATE_START;
           CHECK(ioctl(Handle->handle, DMX_SET_PES_FILTER, &pesFilterParams));
           }
        close(Handle->handle);
        Handle->handle = -1;
        }
     }
  return true;
}

int cDvbDevice::OpenFilter(u_short Pid, u_char Tid, u_char Mask)
{
  cString FileName = DvbName(DEV_DVB_DEMUX, adapter, frontend);
  int f = open(FileName, O_RDWR | O_NONBLOCK);
  if (f >= 0) {
     dmx_sct_filter_params sctFilterParams;
     memset(&sctFilterParams, 0, sizeof(sctFilterParams));
     sctFilterParams.pid = Pid;
     sctFilterParams.timeout = 0;
     sctFilterParams.flags = DMX_IMMEDIATE_START;
     sctFilterParams.filter.filter[0] = Tid;
     sctFilterParams.filter.mask[0] = Mask;
     if (ioctl(f, DMX_SET_FILTER, &sctFilterParams) >= 0)
        return f;
     else {
        esyslog("ERROR: can't set filter (pid=%d, tid=%02X, mask=%02X): %m", Pid, Tid, Mask);
        close(f);
        }
     }
  else
     esyslog("ERROR: can't open filter handle on '%s'", *FileName);
  return -1;
}

void cDvbDevice::CloseFilter(int Handle)
{
  close(Handle);
}

bool cDvbDevice::ProvidesSource(int Source) const
{
  int type = Source & cSource::st_Mask;
  return type == cSource::stNone
      || type == cSource::stCable && (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B)
      || type == cSource::stSat   && (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
      || type == cSource::stTerr  && (frontendType == SYS_DVBT);
}

bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
{
  if (!ProvidesSource(Channel->Source()))
     return false; // doesn't provide source
  if (!cSource::IsSat(Channel->Source()))
     return DeviceHooksProvidesTransponder(Channel); // source is sufficient for non sat
  if (frontendType == SYS_DVBS && Channel->System() == SYS_DVBS2)
     return false; // requires modulation system which frontend doesn't provide
  if (!Setup.DiSEqC || Diseqcs.Get(CardIndex() + 1, Channel->Source(), Channel->Frequency(), Channel->Polarization()))
     return DeviceHooksProvidesTransponder(Channel);
  return false;
}

bool cDvbDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *NeedsDetachReceivers) const
{
  bool result = false;
  bool hasPriority = Priority < 0 || Priority > this->Priority();
  bool needsDetachReceivers = false;

  if (ProvidesTransponder(Channel)) {
     result = hasPriority;
     if (Priority >= 0 && Receiving(true)) {
        if (dvbTuner->IsTunedTo(Channel)) {
           if (Channel->Vpid() && !HasPid(Channel->Vpid()) || Channel->Apid(0) && !HasPid(Channel->Apid(0))) {
              if (CamSlot() && Channel->Ca() >= CA_ENCRYPTED_MIN) {
                 if (CamSlot()->CanDecrypt(Channel))
                    result = true;
                 else
                    needsDetachReceivers = true;
                 }
              else if (!IsPrimaryDevice())
                 result = true;
              else
                 result = Priority >= Setup.PrimaryLimit;
              }
           else
              result = !IsPrimaryDevice() || Priority >= Setup.PrimaryLimit;
           }
        else
           needsDetachReceivers = true;
        }
     }
  if (NeedsDetachReceivers)
     *NeedsDetachReceivers = needsDetachReceivers;
  return result;
}

int cDvbDevice::NumProvidedSystems(void) const
{
  return numProvidedSystems;
}

const cChannel *cDvbDevice::GetCurrentlyTunedTransponder(void) const
{
  return dvbTuner->GetTransponder(); 
}

bool cDvbDevice::IsTunedToTransponder(const cChannel *Channel)
{
  return dvbTuner->IsTunedTo(Channel);
}

bool cDvbDevice::SetChannelDevice(const cChannel *Channel, bool LiveView)
{
  dvbTuner->Set(Channel);
  return true;
}

bool cDvbDevice::HasLock(int TimeoutMs)
{
  return dvbTuner ? dvbTuner->Locked(TimeoutMs) : false;
}

void cDvbDevice::SetTransferModeForDolbyDigital(int Mode)
{
  setTransferModeForDolbyDigital = Mode;
}

bool cDvbDevice::OpenDvr(void)
{
  CloseDvr();
  fd_dvr = DvbOpen(DEV_DVB_DVR, adapter, frontend, O_RDONLY | O_NONBLOCK, true);
  if (fd_dvr >= 0)
     tsBuffer = new cTSBuffer(fd_dvr, MEGABYTE(2), CardIndex() + 1);
  return fd_dvr >= 0;
}

void cDvbDevice::CloseDvr(void)
{
  if (fd_dvr >= 0) {
     delete tsBuffer;
     tsBuffer = NULL;
     close(fd_dvr);
     fd_dvr = -1;
     }
}

bool cDvbDevice::GetTSPacket(uchar *&Data)
{
  if (tsBuffer) {
     Data = tsBuffer->Get();
     return true;
     }
  return false;
}

// --- cDvbDeviceProbe -------------------------------------------------------

cList<cDvbDeviceProbe> DvbDeviceProbes;

cDvbDeviceProbe::cDvbDeviceProbe(void)
{
  DvbDeviceProbes.Add(this);
}

cDvbDeviceProbe::~cDvbDeviceProbe()
{
  DvbDeviceProbes.Del(this, false);
}