summaryrefslogtreecommitdiff
path: root/device.c
blob: 7bce6c4e1c66ae576bf59506f823904ce0e39aae (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
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
/*
 * device.c: The basic device interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: device.c 1.3 2002/06/22 13:45:53 kls Exp $
 */

#include "device.h"
#include <errno.h>
extern "C" {
#define HAVE_BOOLEAN
#include <jpeglib.h>
}
#include <linux/videodev.h>
#include <ost/sec.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "player.h"
#include "receiver.h"
#include "status.h"
#include "transfer.h"

#define DEV_VIDEO         "/dev/video"
#define DEV_OST_OSD       "/dev/ost/osd"
#define DEV_OST_FRONTEND  "/dev/ost/frontend"
#define DEV_OST_SEC       "/dev/ost/sec"
#define DEV_OST_DVR       "/dev/ost/dvr"
#define DEV_OST_DEMUX     "/dev/ost/demux"
#define DEV_OST_VIDEO     "/dev/ost/video"
#define DEV_OST_AUDIO     "/dev/ost/audio"

// The default priority for non-primary DVB cards:
#define DEFAULTPRIORITY  -2

#define TS_SIZE          188
#define TS_SYNC_BYTE     0x47
#define PID_MASK_HI      0x1F

// The maximum time we wait before assuming that a recorded video data stream
// is broken:
#define MAXBROKENTIMEOUT 30 // seconds

static const char *OstName(const char *Name, int n)
{
  static char buffer[_POSIX_PATH_MAX];
  snprintf(buffer, sizeof(buffer), "%s%d", Name, n);
  return buffer;
}

static int OstOpen(const char *Name, int n, int Mode, bool ReportError = false)
{
  const char *FileName = OstName(Name, n);
  int fd = open(FileName, Mode);
  if (fd < 0 && ReportError)
     LOG_ERROR_STR(FileName);
  return fd;
}

int cDevice::numDevices = 0;
int cDevice::useDevice = 0;
cDevice *cDevice::device[MAXDEVICES] = { NULL };
cDevice *cDevice::primaryDevice = NULL;

cDevice::cDevice(int n)
{
  frontendType = FrontendType(-1); // don't know how else to initialize this - there is no FE_UNKNOWN
  siProcessor = NULL;
  cardIndex = n;

  // Devices that are present on all card types:

  fd_frontend = OstOpen(DEV_OST_FRONTEND, n, O_RDWR);

  // Devices that are only present on DVB-S cards:

  fd_sec      = OstOpen(DEV_OST_SEC,      n, O_RDWR);

  // Devices that are only present on cards with decoders:

  fd_osd      = OstOpen(DEV_OST_OSD,    n, O_RDWR);
  fd_video    = OstOpen(DEV_OST_VIDEO,  n, O_RDWR | O_NONBLOCK);
  fd_audio    = OstOpen(DEV_OST_AUDIO,  n, O_RDWR | O_NONBLOCK);

  // Video format:

  SetVideoFormat(Setup.VideoFormat ? VIDEO_FORMAT_16_9 : VIDEO_FORMAT_4_3);

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

  if (fd_frontend >= 0) {
     siProcessor = new cSIProcessor(OstName(DEV_OST_DEMUX, n));
     FrontendInfo feinfo;
     if (ioctl(fd_frontend, FE_GET_INFO, &feinfo) >= 0)
        frontendType = feinfo.type;
     else
        LOG_ERROR;
     }
  else
     esyslog("ERROR: can't open video device %d", n);

  dvrFileName = strdup(OstName(DEV_OST_DVR, CardIndex()));
  active = false;

  currentChannel = 0;
  frequency = 0;
  transfer = NULL;

  mute = false;
  volume = Setup.CurrentVolume;

  player = NULL;

  for (int i = 0; i < MAXRECEIVERS; i++)
      receiver[i] = NULL;
  ca = -1;
}

cDevice::~cDevice()
{
  delete transfer;
  delete dvrFileName;
  delete siProcessor;
  Detach(player);
  for (int i = 0; i < MAXRECEIVERS; i++)
      Detach(receiver[i]);
  // We're not explicitly closing any device files here, since this sometimes
  // caused segfaults. Besides, the program is about to terminate anyway...
}

void cDevice::SetUseDevice(int n)
{
  if (n < MAXDEVICES)
     useDevice |= (1 << n);
}

bool cDevice::SetPrimaryDevice(int n)
{
  n--;
  if (0 <= n && n < numDevices && device[n]) {
     isyslog("setting primary device to %d", n + 1);
     primaryDevice = device[n];
     return true;
     }
  esyslog("invalid devive number: %d", n + 1);
  return false;
}

cDevice *cDevice::GetDevice(int Ca, int Priority, int Frequency, int Vpid, bool *ReUse)
{
  if (ReUse)
     *ReUse = false;
  cDevice *d = NULL;
  int Provides[MAXDEVICES];
  // Check which devices provide Ca:
  for (int i = 0; i < numDevices; i++) {
      if ((Provides[i] = device[i]->ProvidesCa(Ca)) != 0) { // this device is basicly able to do the job
         //XXX+ dsyslog("GetDevice: %d %d %d %5d %5d", i, device[i]->HasDecoder(), device[i]->Receiving(), Frequency, device[i]->frequency);//XXX
         if (  (!device[i]->HasDecoder() // it's a "budget card" which can receive multiple channels...
               && device[i]->frequency == Frequency // ...and it is tuned to the requested frequency...
               && device[i]->Receiving() // ...and is already receiving
               // need not check priority - if a budget card is already receiving on the requested
               // frequency, we can attach another receiver regardless of priority
               )
            || (device[i]->HasDecoder() // it's a "full featured card" which can receive only one channel...
               && device[i]->frequency == Frequency // ...and it is tuned to the requested frequency...
               && device[i]->pidHandles[ptVideo].pid == Vpid // ...and the requested video PID...
               && device[i]->Receiving() // ...and is already receiving
               // need not check priority - if a full featured card is already receiving the requested
               // frequency and video PID, we can attach another receiver regardless of priority
               )
            ) {
            d = device[i];
            if (ReUse)
               *ReUse = true;
            break;
            }
         if (Priority > device[i]->Priority() // Priority is high enough to use this device
            && (!d // we don't have a device yet, or...
               || device[i]->Priority() < d->Priority() // ...this one has an even lower Priority
               || (device[i]->Priority() == d->Priority() // ...same Priority...
                  && Provides[i] < Provides[d->CardIndex()] // ...but this one provides fewer Ca values
                  )
               )
            )
            d = device[i];
         }
      }
  /*XXX+ too complex with multiple recordings per device
  if (!d && Ca > MAXDEVICES) {
     // We didn't find one the easy way, so now we have to try harder:
     int ShiftLevel = -1;
     for (int i = 0; i < numDevices; i++) {
         if (Provides[i]) { // this device is basicly able to do the job, but for some reason we didn't get it above
            int sl = device[i]->CanShift(Ca, Priority); // asks this device to shift its job to another device
            if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
               d = device[i]; // found one that can be shifted with the fewest number of subsequent shifts
               ShiftLevel = sl;
               }
            }
         }
     }
  XXX*/
  return d;
}

void cDevice::SetCaCaps(void)
{
  for (int d = 0; d < numDevices; d++) {
      for (int i = 0; i < MAXCACAPS; i++)
          device[d]->caCaps[i] = Setup.CaCaps[device[d]->CardIndex()][i];
      }
}

bool cDevice::Probe(const char *FileName)
{
  if (access(FileName, F_OK) == 0) {
     dsyslog("probing %s", FileName);
     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 cDevice::Initialize(void)
{
  numDevices = 0;
  for (int i = 0; i < MAXDEVICES; i++) {
      if (useDevice == 0 || (useDevice & (1 << i)) != 0) {
         if (Probe(OstName(DEV_OST_FRONTEND, i)))
            device[numDevices++] = new cDevice(i);
         else
            break;
         }
      }
  primaryDevice = device[0];
  if (numDevices > 0) {
     isyslog("found %d video device%s", numDevices, numDevices > 1 ? "s" : "");
     SetCaCaps();
     }
  else
     esyslog("ERROR: no video device found, giving up!");
  return numDevices > 0;
}

void cDevice::Shutdown(void)
{
  for (int i = 0; i < numDevices; i++) {
      delete device[i];
      device[i] = NULL;
      }
  primaryDevice = NULL;
}

bool cDevice::GrabImage(const char *FileName, bool Jpeg, int Quality, int SizeX, int SizeY)
{
  int videoDev = OstOpen(DEV_VIDEO, CardIndex(), O_RDWR, true);
  if (videoDev >= 0) {
     int result = 0;
     struct video_mbuf mbuf;
     result |= ioctl(videoDev, VIDIOCGMBUF, &mbuf);
     if (result == 0) {
        int msize = mbuf.size;
        unsigned char *mem = (unsigned char *)mmap(0, msize, PROT_READ | PROT_WRITE, MAP_SHARED, videoDev, 0);
        if (mem && mem != (unsigned char *)-1) {
           // set up the size and RGB
           struct video_capability vc;
           result |= ioctl(videoDev, VIDIOCGCAP, &vc);
           struct video_mmap vm;
           vm.frame = 0;
           if ((SizeX > 0) && (SizeX <= vc.maxwidth) &&
               (SizeY > 0) && (SizeY <= vc.maxheight)) {
              vm.width = SizeX;
              vm.height = SizeY;
              }
           else {
              vm.width = vc.maxwidth;
              vm.height = vc.maxheight;
              }
           vm.format = VIDEO_PALETTE_RGB24;
           result |= ioctl(videoDev, VIDIOCMCAPTURE, &vm);
           result |= ioctl(videoDev, VIDIOCSYNC, &vm.frame);
           // make RGB out of BGR:
           int memsize = vm.width * vm.height;
           unsigned char *mem1 = mem;
           for (int i = 0; i < memsize; i++) {
               unsigned char tmp = mem1[2];
               mem1[2] = mem1[0];
               mem1[0] = tmp;
               mem1 += 3;
               }
         
           if (Quality < 0)
              Quality = 255; //XXX is this 'best'???
         
           isyslog("grabbing to %s (%s %d %d %d)", FileName, Jpeg ? "JPEG" : "PNM", Quality, vm.width, vm.height);
           FILE *f = fopen(FileName, "wb");
           if (f) {
              if (Jpeg) {
                 // write JPEG file:
                 struct jpeg_compress_struct cinfo;
                 struct jpeg_error_mgr jerr;
                 cinfo.err = jpeg_std_error(&jerr);
                 jpeg_create_compress(&cinfo);
                 jpeg_stdio_dest(&cinfo, f);
                 cinfo.image_width = vm.width;
                 cinfo.image_height = vm.height;
                 cinfo.input_components = 3;
                 cinfo.in_color_space = JCS_RGB;
         
                 jpeg_set_defaults(&cinfo);
                 jpeg_set_quality(&cinfo, Quality, true);
                 jpeg_start_compress(&cinfo, true);
         
                 int rs = vm.width * 3;
                 JSAMPROW rp[vm.height];
                 for (int k = 0; k < vm.height; k++)
                     rp[k] = &mem[rs * k];
                 jpeg_write_scanlines(&cinfo, rp, vm.height);
                 jpeg_finish_compress(&cinfo);
                 jpeg_destroy_compress(&cinfo);
                 }
              else {
                 // write PNM file:
                 if (fprintf(f, "P6\n%d\n%d\n255\n", vm.width, vm.height) < 0 ||
                     fwrite(mem, vm.width * vm.height * 3, 1, f) < 0) {
                    LOG_ERROR_STR(FileName);
                    result |= 1;
                    }
                 }
              fclose(f);
              }
           else {
              LOG_ERROR_STR(FileName);
              result |= 1;
              }
           munmap(mem, msize);
           }
        else
           result |= 1;
        }
     close(videoDev);
     return result == 0;
     }
  return false;
}

void cDevice::SetVideoFormat(videoFormat_t Format)
{
  if (HasDecoder())
     CHECK(ioctl(fd_video, VIDEO_SET_FORMAT, Format));
}

//                          ptVideo        ptAudio        ptTeletext        ptDolby        ptOther
dmxPesType_t PesTypes[] = { DMX_PES_VIDEO, DMX_PES_AUDIO, DMX_PES_TELETEXT, DMX_PES_OTHER, DMX_PES_OTHER };

//#define PRINTPIDS(s) { char b[500]; char *q = b; q += sprintf(q, "%d %s ", CardIndex(), s); for (int i = 0; i < MAXPIDHANDLES; i++) q += sprintf(q, " %s%4d %d", i == ptOther ? "* " : "", pidHandles[i].pid, pidHandles[i].used); dsyslog(b); } //XXX+
#define PRINTPIDS(s)

bool cDevice::AddPid(int Pid, ePidType PidType)
{
  if (Pid) {
     int n = -1;
     int a = -1;
     for (int i = 0; i < MAXPIDHANDLES; i++) {
         if (pidHandles[i].pid == Pid)
            n = i;
         else if (a < 0 && i >= ptOther && !pidHandles[i].used)
            a = i;
         }
     dmxPesType_t PesType = PesTypes[ptOther];
     if (n >= 0) {
        // The Pid is already in use
        if (++pidHandles[n].used == 2 && n <= ptTeletext) {
           // It's a special PID that has to be switched into "tap" mode
           PRINTPIDS("A");//XXX+
           return SetPid(pidHandles[n].fd, PesTypes[n], Pid, DMX_OUT_TS_TAP);
           }
        PRINTPIDS("a");//XXX+
        return true;
        }
     else if (PidType < ptOther) {
        // The Pid is not yet in use and it is a special one
        n = PidType;
        PesType = PesTypes[PidType];
        PRINTPIDS("B");//XXX+
        }
     else if (a >= 0) {
        // The Pid is not yet in use and we have a free slot
        n = a;
        }
     else
        esyslog("ERROR: no free slot for PID %d", Pid);
     if (n >= 0) {
        pidHandles[n].pid = Pid;
        pidHandles[n].fd = OstOpen(DEV_OST_DEMUX, CardIndex(), O_RDWR | O_NONBLOCK, true);
        pidHandles[n].used = 1;
        PRINTPIDS("C");//XXX+
        return SetPid(pidHandles[n].fd, PesType, Pid, PidType <= ptTeletext ? DMX_OUT_DECODER : DMX_OUT_TS_TAP);
        }
     }
  return true;
}

bool cDevice::DelPid(int Pid)
{
  if (Pid) {
     for (int i = 0; i < MAXPIDHANDLES; i++) {
         if (pidHandles[i].pid == Pid) {
            switch (--pidHandles[i].used) {
              case 0: CHECK(ioctl(pidHandles[i].fd, DMX_STOP));//XXX+ is this necessary???
                      close(pidHandles[i].fd);
                      pidHandles[i].fd = -1;
                      pidHandles[i].pid = 0;
                      break;
              case 1: if (i <= ptTeletext)
                         SetPid(pidHandles[i].fd, PesTypes[i], Pid, DMX_OUT_DECODER);
                      break;
              }
            PRINTPIDS("D");//XXX+
            return pidHandles[i].used;
            }
         }
     }
  return false;
}

bool cDevice::SetPid(int fd, dmxPesType_t PesType, int Pid, dmxOutput_t Output)
{
  if (Pid) {
     CHECK(ioctl(fd, DMX_STOP));
     if (Pid != 0x1FFF) {
        dmxPesFilterParams pesFilterParams;
        pesFilterParams.pid     = Pid;
        pesFilterParams.input   = DMX_IN_FRONTEND;
        pesFilterParams.output  = Output;
        pesFilterParams.pesType = PesType;
        pesFilterParams.flags   = DMX_IMMEDIATE_START;
        //XXX+ pesFilterParams.flags   = DMX_CHECK_CRC;//XXX
        if (ioctl(fd, DMX_SET_PES_FILTER, &pesFilterParams) < 0) {
           LOG_ERROR;
           return false;
           }
        //XXX+ CHECK(ioctl(fd, DMX_SET_BUFFER_SIZE, KILOBYTE(32)));//XXX
        //XXX+ CHECK(ioctl(fd, DMX_START));//XXX
        }
     }
  return true;
}

eSetChannelResult cDevice::SetChannel(int ChannelNumber, int Frequency, char Polarization, int Diseqc, int Srate, int Vpid, int Apid, int Tpid, int Ca, int Pnr)
{
  DELETENULL(transfer);
  //XXX+StopReplay();

  cStatus::MsgChannelSwitch(this, 0);

  // Must set this anyway to avoid getting stuck when switching through
  // channels with 'Up' and 'Down' keys:
  currentChannel = ChannelNumber;

  // Avoid noise while switching:

  if (HasDecoder()) {
     CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, true));
     CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
     CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
     CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
     }

  // Stop setting system time:

  if (siProcessor)
     siProcessor->SetCurrentTransponder(0);

  // If this card can't receive this channel, we must not actually switch
  // the channel here, because that would irritate the driver when we
  // start replaying in Transfer Mode immediately after switching the channel:
  bool NeedsTransferMode = (IsPrimaryDevice() && !ProvidesCa(Ca));

  if (!NeedsTransferMode) {

     // Turn off current PIDs:

     if (HasDecoder()) {
        DelPid(pidHandles[ptVideo].pid);
        DelPid(pidHandles[ptAudio].pid);
        DelPid(pidHandles[ptTeletext].pid);
        DelPid(pidHandles[ptDolby].pid);
        }

     FrontendParameters Frontend;

     switch (frontendType) {
       case FE_QPSK: { // DVB-S

            // Frequency offsets:

            unsigned int freq = Frequency;
            int tone = SEC_TONE_OFF;

            if (freq < (unsigned int)Setup.LnbSLOF) {
               freq -= Setup.LnbFrequLo;
               tone = SEC_TONE_OFF;
               }
            else {
               freq -= Setup.LnbFrequHi;
               tone = SEC_TONE_ON;
               }

            Frontend.Frequency = freq * 1000UL;
            Frontend.Inversion = INVERSION_AUTO;
            Frontend.u.qpsk.SymbolRate = Srate * 1000UL;
            Frontend.u.qpsk.FEC_inner = FEC_AUTO;

            int volt = (Polarization == 'v' || Polarization == 'V') ? SEC_VOLTAGE_13 : SEC_VOLTAGE_18;

            // DiseqC:

            secCommand scmd;
            scmd.type = 0;
            scmd.u.diseqc.addr = 0x10;
            scmd.u.diseqc.cmd = 0x38;
            scmd.u.diseqc.numParams = 1;
            scmd.u.diseqc.params[0] = 0xF0 | ((Diseqc * 4) & 0x0F) | (tone == SEC_TONE_ON ? 1 : 0) | (volt == SEC_VOLTAGE_18 ? 2 : 0);

            secCmdSequence scmds;
            scmds.voltage = volt;
            scmds.miniCommand = SEC_MINI_NONE;
            scmds.continuousTone = tone;
            scmds.numCommands = Setup.DiSEqC ? 1 : 0;
            scmds.commands = &scmd;

            CHECK(ioctl(fd_sec, SEC_SEND_SEQUENCE, &scmds));
            }
            break;
       case FE_QAM: { // DVB-C

            // Frequency and symbol rate:

            Frontend.Frequency = Frequency * 1000000UL;
            Frontend.Inversion = INVERSION_AUTO;
            Frontend.u.qam.SymbolRate = Srate * 1000UL;
            Frontend.u.qam.FEC_inner = FEC_AUTO;
            Frontend.u.qam.QAM = QAM_64;
            }
            break;
       case FE_OFDM: { // DVB-T

            // Frequency and OFDM paramaters:

            Frontend.Frequency = Frequency * 1000UL;
            Frontend.Inversion = INVERSION_AUTO;
            Frontend.u.ofdm.bandWidth=BANDWIDTH_8_MHZ;
            Frontend.u.ofdm.HP_CodeRate=FEC_2_3;
            Frontend.u.ofdm.LP_CodeRate=FEC_1_2;
            Frontend.u.ofdm.Constellation=QAM_64;
            Frontend.u.ofdm.TransmissionMode=TRANSMISSION_MODE_2K;
            Frontend.u.ofdm.guardInterval=GUARD_INTERVAL_1_32;
            Frontend.u.ofdm.HierarchyInformation=HIERARCHY_NONE;
            }
            break;
       default:
            esyslog("ERROR: attempt to set channel with unknown DVB frontend type");
            return scrFailed;
       }

     // Tuning:

     CHECK(ioctl(fd_frontend, FE_SET_FRONTEND, &Frontend));

     // Wait for channel sync:

     if (cFile::FileReady(fd_frontend, 5000)) {
        FrontendEvent event;
        int res = ioctl(fd_frontend, FE_GET_EVENT, &event);
        if (res >= 0) {
           if (event.type != FE_COMPLETION_EV) {
              esyslog("ERROR: channel %d not sync'ed on DVB card %d!", ChannelNumber, CardIndex() + 1);
              if (IsPrimaryDevice())
                 cThread::RaisePanic();
              return scrFailed;
              }
           }
        else
           esyslog("ERROR %d in frontend get event (channel %d, card %d)", res, ChannelNumber, CardIndex() + 1);
        }
     else
        esyslog("ERROR: timeout while tuning");

     frequency = Frequency;

     // PID settings:

     if (HasDecoder()) {
        if (!(AddPid(Vpid, ptVideo) && AddPid(Apid, ptAudio))) {//XXX+ dolby Dpid1!!! (if audio plugins are attached)
           esyslog("ERROR: failed to set PIDs for channel %d", ChannelNumber);
           return scrFailed;
           }
        if (IsPrimaryDevice())
           AddPid(Tpid, ptTeletext);
        CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
        }
     }

  if (IsPrimaryDevice() && siProcessor)
     siProcessor->SetCurrentServiceID(Pnr);

  eSetChannelResult Result = scrOk;

  // If this DVB card can't receive this channel, let's see if we can
  // use the card that actually can receive it and transfer data from there:

  if (NeedsTransferMode) {
     cDevice *CaDevice = GetDevice(Ca, 0);
     if (CaDevice && !CaDevice->Receiving()) {
        if ((Result = CaDevice->SetChannel(ChannelNumber, Frequency, Polarization, Diseqc, Srate, Vpid, Apid, Tpid, Ca, Pnr)) == scrOk) {
           transfer = new cTransfer(Vpid, Apid, 0, 0, 0);//XXX+
           AttachPlayer(transfer);
           CaDevice->AttachReceiver(transfer);
           }
        }
     else
        Result = scrNoTransfer;
     }

  if (HasDecoder()) {
     CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
     CHECK(ioctl(fd_video, VIDEO_SET_BLANK, false));
     }

  // Start setting system time:

  if (Result == scrOk && siProcessor)
     siProcessor->SetCurrentTransponder(Frequency);

  cStatus::MsgChannelSwitch(this, ChannelNumber);

  return Result;
}

bool cDevice::ToggleMute(void)
{
  int OldVolume = volume;
  mute = !mute;
  SetVolume(0, mute);
  volume = OldVolume;
  return mute;
}

void cDevice::SetVolume(int Volume, bool Absolute)
{
  if (HasDecoder()) {
     volume = min(max(Absolute ? Volume : volume + Volume, 0), MAXVOLUME);
     audioMixer_t am;
     am.volume_left = am.volume_right = volume;
     CHECK(ioctl(fd_audio, AUDIO_SET_MIXER, &am));
     cStatus::MsgSetVolume(volume, Absolute);
     if (volume > 0)
        mute = false;
     }
}

void cDevice::TrickSpeed(int Speed)
{
  if (fd_video >= 0)
     CHECK(ioctl(fd_video, VIDEO_SLOWMOTION, Speed));
}

void cDevice::Clear(void)
{
  if (fd_video >= 0)
     CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
  if (fd_audio >= 0)
     CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
}

void cDevice::Play(void)
{
  if (fd_audio >= 0)
     CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
  if (fd_video >= 0)
     CHECK(ioctl(fd_video, VIDEO_CONTINUE));
}

void cDevice::Freeze(void)
{
  if (fd_audio >= 0)
     CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
  if (fd_video >= 0)
     CHECK(ioctl(fd_video, VIDEO_FREEZE));
}

void cDevice::Mute(void)
{
  if (fd_audio >= 0) {
     CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, false));
     CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, true));
     }
}

void cDevice::StillPicture(const uchar *Data, int Length)
{
  Mute();
/* Using the VIDEO_STILLPICTURE ioctl call would be the
   correct way to display a still frame, but unfortunately this
   doesn't work with frames from VDR. So let's do pretty much the
   same here as in DVB/driver/dvb.c's play_iframe() - I have absolutely
   no idea why it works this way, but doesn't work with VIDEO_STILLPICTURE.
   If anybody ever finds out what could be changed so that VIDEO_STILLPICTURE
   could be used, please let me know!
   kls 2002-03-23
*/
//#define VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
#ifdef VIDEO_STILLPICTURE_WORKS_WITH_VDR_FRAMES
  videoDisplayStillPicture sp = { (char *)Data, Length };
  CHECK(ioctl(fd_video, VIDEO_STILLPICTURE, &sp));
#else
#define MIN_IFRAME 400000
  for (int i = MIN_IFRAME / Length + 1; i > 0; i--) {
      safe_write(fd_video, Data, Length);
      usleep(1); // allows the buffer to be displayed in case the progress display is active
      }
#endif
}

bool cDevice::Replaying(void)
{
  /*XXX+
  if (replayBuffer && !replayBuffer->Active())
     StopReplay();
  return replayBuffer != NULL;
  XXX*/
  return player != NULL;
}

bool cDevice::AttachPlayer(cPlayer *Player)
{
  if (Receiving()) {
     esyslog("ERROR: attempt to attach a cPlayer while receiving on device %d - ignored", CardIndex() + 1);
     return false;
     }
  if (HasDecoder()) {
     if (player)
        Detach(player);

     if (siProcessor)
        siProcessor->SetStatus(false);
     CHECK(ioctl(fd_video, VIDEO_SET_BLANK, true));
     CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_MEMORY));
     CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
     CHECK(ioctl(fd_audio, AUDIO_PLAY));
     CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY));
     CHECK(ioctl(fd_video, VIDEO_PLAY));

     player = Player;
     player->device = this;
     player->deviceFileHandle = fd_video;
     player->Activate(true);
     return true;
     }
  return false;
}

void cDevice::Detach(cPlayer *Player)
{
  if (Player && player == Player) {
     player->Activate(false);
     player->deviceFileHandle = -1;
     player->device = NULL;
     player = NULL;

     CHECK(ioctl(fd_video, VIDEO_STOP, true));
     CHECK(ioctl(fd_audio, AUDIO_STOP, true));
     CHECK(ioctl(fd_video, VIDEO_CLEAR_BUFFER));
     CHECK(ioctl(fd_audio, AUDIO_CLEAR_BUFFER));
     CHECK(ioctl(fd_video, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX));
     CHECK(ioctl(fd_audio, AUDIO_SELECT_SOURCE, AUDIO_SOURCE_DEMUX));
     CHECK(ioctl(fd_audio, AUDIO_SET_AV_SYNC, true));
     CHECK(ioctl(fd_audio, AUDIO_SET_MUTE, false));
     if (siProcessor)
        siProcessor->SetStatus(true);
     }
}

void cDevice::StopReplay(void)
{
  if (player) {
     Detach(player);
     /*XXX+
     if (IsPrimaryDevice()) {
        // let's explicitly switch the channel back in case it was in Transfer Mode:
        cChannel *Channel = Channels.GetByNumber(currentChannel);
        if (Channel) {
           Channel->Switch(this, false);
           usleep(100000); // allow driver to sync in case a new replay will start immediately
           }
        }
        XXX*/
     }
}

int cDevice::PlayVideo(const uchar *Data, int Length)
{
  if (fd_video >= 0)
     return write(fd_video, Data, Length);
  return -1;
}

int cDevice::PlayAudio(const uchar *Data, int Length)
{
  //XXX+
  return -1;
}

int cDevice::Priority(void)
{
  if (IsPrimaryDevice() && !Receiving())
     return Setup.PrimaryLimit - 1;
  int priority = DEFAULTPRIORITY;
  for (int i = 0; i < MAXRECEIVERS; i++) {
      if (receiver[i])
         priority = max(receiver[i]->priority, priority);
      }
  return priority;
}

int cDevice::CanShift(int Ca, int Priority, int UsedCards)
{
  return -1;//XXX+ too complex with multiple recordings per device
  // Test whether a receiving on this DVB device can be shifted to another one
  // in order to perform a new receiving with the given Ca and Priority on this device:
  int ShiftLevel = -1; // default means this device can't be shifted
  if (UsedCards & (1 << CardIndex()) != 0)
     return ShiftLevel; // otherwise we would get into a loop
  if (Receiving()) {
     if (ProvidesCa(Ca) // this device provides the requested Ca
        && (Ca != this->Ca() // the requested Ca is different from the one currently used...
           || Priority > this->Priority())) { // ...or the request comes from a higher priority
        cDevice *d = NULL;
        int Provides[MAXDEVICES];
        UsedCards |= (1 << CardIndex());
        for (int i = 0; i < numDevices; i++) {
            if ((Provides[i] = device[i]->ProvidesCa(this->Ca())) != 0) { // this device is basicly able to do the job
               if (device[i] != this) { // it is not _this_ device
                  int sl = device[i]->CanShift(this->Ca(), Priority, UsedCards); // this is the original Priority!
                  if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
                     d = device[i];
                     ShiftLevel = sl;
                     }
                  }
               }
            }
        if (ShiftLevel >= 0)
           ShiftLevel++; // adds the device's own shift
        }
     }
  else if (Priority > this->Priority())
     ShiftLevel = 0; // no shifting necessary, this device can do the job
  return ShiftLevel;
}

int cDevice::ProvidesCa(int Ca)
{
  if (Ca == CardIndex() + 1)
     return 1; // exactly _this_ card was requested
  if (Ca && Ca <= MAXDEVICES)
     return 0; // a specific card was requested, but not _this_ one
  int result = Ca ? 0 : 1; // by default every card can provide FTA
  int others = Ca ? 1 : 0;
  for (int i = 0; i < MAXCACAPS; i++) {
      if (caCaps[i]) {
         if (caCaps[i] == Ca)
            result = 1;
         else
            others++;
         }
      }
  return result ? result + others : 0;
}

bool cDevice::Receiving(void)
{
  for (int i = 0; i < MAXRECEIVERS; i++) {
      if (receiver[i])
         return true;
      }
  return false;
}

void cDevice::Action(void)
{
  dsyslog("receiver thread started on device %d (pid=%d)", CardIndex() + 1, getpid());

  int fd_dvr = open(dvrFileName, O_RDONLY | O_NONBLOCK);
  if (fd_dvr >= 0) {
     pollfd pfd;
     pfd.fd = fd_dvr;
     pfd.events = pfd.revents = POLLIN;
     uchar b[TS_SIZE];
     time_t t = time(NULL);
     active = true;
     for (; active;) {

         // Read data from the DVR device:

         if (pfd.revents & POLLIN != 0) {
            int r = read(fd_dvr, b, sizeof(b));
            if (r == TS_SIZE) {
               if (*b == TS_SYNC_BYTE) {
                  // We're locked on to a TS packet
                  int Pid = (((uint16_t)b[1] & PID_MASK_HI) << 8) | b[2];
                  // Distribute the packet to all attached receivers:
                  Lock();
                  for (int i = 0; i < MAXRECEIVERS; i++) {
                      if (receiver[i] && receiver[i]->WantsPid(Pid))
                         receiver[i]->Receive(b, TS_SIZE);
                      }
                  Unlock();
                  }
               t = time(NULL);
               }
            else if (r > 0)
               esyslog("ERROR: got incomplete TS packet (%d bytes)", r);//XXX+ TODO do we have to read the rest???
            else if (r < 0) {
               if (FATALERRNO) {
                  if (errno == EBUFFEROVERFLOW) // this error code is not defined in the library
                     esyslog("ERROR: DVB driver buffer overflow on device %d", CardIndex() + 1);
                  else {
                     LOG_ERROR;
                     break;
                     }
                  }
               }
            }

         // Wait for more data to become available:

         poll(&pfd, 1, 100);

         //XXX+ put this into the recorder??? or give the receiver a flag whether it wants this?
         if (time(NULL) - t > MAXBROKENTIMEOUT) {
            esyslog("ERROR: video data stream broken on device %d", CardIndex() + 1);
            cThread::EmergencyExit(true);
            t = time(NULL);
            }
         }
     close(fd_dvr);
     }
  else
     LOG_ERROR_STR(dvrFileName);

  dsyslog("receiver thread ended on device %d (pid=%d)", CardIndex() + 1, getpid());
}

bool cDevice::AttachReceiver(cReceiver *Receiver)
{
  //XXX+ check for same transponder???
  if (!Receiver)
     return false;
  if (Receiver->device == this)
     return true;
  StopReplay();
  for (int i = 0; i < MAXRECEIVERS; i++) {
      if (!receiver[i]) {
         //siProcessor->SetStatus(false);//XXX+
         for (int n = 0; n < MAXRECEIVEPIDS; n++) {
             if (Receiver->pids[n])
                AddPid(Receiver->pids[n]);//XXX+ retval!
             else
                break;
             }
         Receiver->Activate(true);
         Lock();
         Receiver->device = this;
         receiver[i] = Receiver;
         Unlock();
         Start();
         return true;
         }
      }
  esyslog("ERROR: no free receiver slot!");
  return false;
}

void cDevice::Detach(cReceiver *Receiver)
{
  if (!Receiver || Receiver->device != this)
     return;
  bool receiversLeft = false;
  for (int i = 0; i < MAXRECEIVERS; i++) {
      if (receiver[i] == Receiver) {
         Receiver->Activate(false);
         Lock();
         receiver[i] = NULL;
         Receiver->device = NULL;
         Unlock();
         for (int n = 0; n < MAXRECEIVEPIDS; n++) {
             if (Receiver->pids[n])
                DelPid(Receiver->pids[n]);
             else
                break;
             }
         }
      else if (receiver[i])
         receiversLeft = true;
      }
  if (!receiversLeft) {
     active = false;
     Cancel(3);
     }
}