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
|
/*
* device.h: The basic device interface
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: device.h 5.2 2022/01/24 16:53:45 kls Exp $
*/
#ifndef __DEVICE_H
#define __DEVICE_H
#include "channels.h"
#include "ci.h"
#include "dvbsubtitle.h"
#include "eit.h"
#include "filter.h"
#include "nit.h"
#include "pat.h"
#include "positioner.h"
#include "remux.h"
#include "ringbuffer.h"
#include "sdt.h"
#include "sections.h"
#include "spu.h"
#include "thread.h"
#include "tools.h"
#define MAXDEVICES 16 // the maximum number of devices in the system
#define MAXPIDHANDLES 64 // the maximum number of different PIDs per device
#define MAXRECEIVERS 16 // the maximum number of receivers per device
#define MAXVOLUME 255
#define VOLUMEDELTA (MAXVOLUME / Setup.VolumeSteps) // used to increase/decrease the volume
#define MAXOCCUPIEDTIMEOUT 99 // max. time (in seconds) a device may be occupied
enum eSetChannelResult { scrOk, scrNotAvailable, scrNoTransfer, scrFailed };
// Note that VDR itself always uses pmAudioVideo when replaying a recording!
enum ePlayMode { pmNone, // audio/video from decoder
pmAudioVideo, // audio/video from player
pmAudioOnly, // audio only from player, video from decoder
pmAudioOnlyBlack, // audio only from player, no video (black screen)
pmVideoOnly, // video only from player, audio from decoder
pmExtern_THIS_SHOULD_BE_AVOIDED
// external player (e.g. MPlayer), release the device
// WARNING: USE THIS MODE ONLY AS A LAST RESORT, IF YOU
// ABSOLUTELY, POSITIVELY CAN'T IMPLEMENT YOUR PLAYER
// THE WAY IT IS SUPPOSED TO WORK. FORCING THE DEVICE
// TO RELEASE ITS FILES HANDLES (OR WHATEVER RESOURCES
// IT MAY USE) TO ALLOW AN EXTERNAL PLAYER TO ACCESS
// THEM MEANS THAT SUCH A PLAYER WILL NEED TO HAVE
// DETAILED KNOWLEDGE ABOUT THE INTERNALS OF THE DEVICE
// IN USE. AS A CONSEQUENCE, YOUR PLAYER MAY NOT WORK
// IF A PARTICULAR VDR INSTALLATION USES A DEVICE NOT
// KNOWN TO YOUR PLAYER.
};
enum eVideoDisplayFormat { vdfPanAndScan,
vdfLetterBox,
vdfCenterCutOut
};
enum eTrackType { ttNone,
ttAudio,
ttAudioFirst = ttAudio,
ttAudioLast = ttAudioFirst + 31, // MAXAPIDS - 1
ttDolby,
ttDolbyFirst = ttDolby,
ttDolbyLast = ttDolbyFirst + 15, // MAXDPIDS - 1
ttSubtitle,
ttSubtitleFirst = ttSubtitle,
ttSubtitleLast = ttSubtitleFirst + 31, // MAXSPIDS - 1
ttMaxTrackTypes
};
#define IS_AUDIO_TRACK(t) (ttAudioFirst <= (t) && (t) <= ttAudioLast)
#define IS_DOLBY_TRACK(t) (ttDolbyFirst <= (t) && (t) <= ttDolbyLast)
#define IS_SUBTITLE_TRACK(t) (ttSubtitleFirst <= (t) && (t) <= ttSubtitleLast)
struct tTrackId {
uint16_t id; // The PES packet id or the PID.
char language[MAXLANGCODE2]; // something like either "eng" or "deu+eng"
char description[32]; // something like "Dolby Digital 5.1"
};
class cPlayer;
class cReceiver;
class cLiveSubtitle;
class cDeviceHook : public cListObject {
public:
cDeviceHook(void);
///< Creates a new device hook object.
///< Do not delete this object - it will be automatically deleted when the
///< program ends.
virtual bool DeviceProvidesTransponder(const cDevice *Device, const cChannel *Channel) const;
///< Returns true if the given Device can provide the given Channel's transponder.
virtual bool DeviceProvidesEIT(const cDevice *Device) const;
///< Returns true if the given Device can provide EIT data.
};
/// The cDevice class is the base from which actual devices can be derived.
#define DTV_STAT_VALID_NONE 0x0000
#define DTV_STAT_VALID_STRENGTH 0x0001
#define DTV_STAT_VALID_CNR 0x0002
#define DTV_STAT_VALID_BERPRE 0x0004
#define DTV_STAT_VALID_BERPOST 0x0008
#define DTV_STAT_VALID_PER 0x0010
#define DTV_STAT_VALID_STATUS 0x0020
#define DTV_STAT_HAS_NONE 0x0000
#define DTV_STAT_HAS_SIGNAL 0x0001
#define DTV_STAT_HAS_CARRIER 0x0002
#define DTV_STAT_HAS_VITERBI 0x0004
#define DTV_STAT_HAS_SYNC 0x0008
#define DTV_STAT_HAS_LOCK 0x0010
class cDevice : public cThread {
friend class cLiveSubtitle;
friend class cDeviceHook;
friend class cReceiver;
private:
static int numDevices;
static int useDevice;
static cDevice *device[MAXDEVICES];
static cDevice *primaryDevice;
public:
static int NumDevices(void) { return numDevices; }
///< Returns the total number of devices.
static bool WaitForAllDevicesReady(int Timeout = 0);
///< Waits until all devices have become ready, or the given Timeout
///< (seconds) has expired. While waiting, the Ready() function of each
///< device is called in turn, until they all return true.
///< Returns true if all devices have become ready within the given
///< timeout.
static void SetUseDevice(int n);
///< Sets the 'useDevice' flag of the given device.
///< If this function is not called before initializing, all devices
///< will be used.
static bool UseDevice(int n) { return useDevice == 0 || (useDevice & (1 << n)) != 0; }
///< Tells whether the device with the given card index shall be used in
///< this instance of VDR.
static bool SetPrimaryDevice(int n);
///< Sets the primary device to 'n'.
///< n must be in the range 1...numDevices.
///< Returns true if this was possible.
static cDevice *PrimaryDevice(void) { return primaryDevice; }
///< Returns the primary device.
static cDevice *ActualDevice(void);
///< Returns the actual receiving device in case of Transfer Mode, or the
///< primary device otherwise.
static cDevice *GetDevice(int Index);
///< Gets the device with the given Index.
///< Index must be in the range 0..numDevices-1.
///< Returns a pointer to the device, or NULL if the Index was invalid.
static cDevice *GetDevice(const cChannel *Channel, int Priority, bool LiveView, bool Query = false);
///< Returns a device that is able to receive the given Channel at the
///< given Priority, with the least impact on active recordings and
///< live viewing. The LiveView parameter tells whether the device will
///< be used for live viewing or a recording.
///< If the Channel is encrypted, a CAM slot that claims to be able to
///< decrypt the channel is automatically selected and assigned to the
///< returned device. Whether or not this combination of device and CAM
///< slot is actually able to decrypt the channel can only be determined
///< by checking the "scrambling control" bits of the received TS packets.
///< The Action() function automatically does this and takes care that
///< after detaching any receivers because the channel can't be decrypted,
///< this device/CAM combination will be skipped in the next call to
///< GetDevice().
///< If Query is true, no actual CAM assignments or receiver detachments will
///< be done, so that this function can be called without any side effects
///< in order to just determine whether a device is available for the given
///< Channel.
///< See also ProvidesChannel().
static cDevice *GetDeviceForTransponder(const cChannel *Channel, int Priority);
///< Returns a device that is not currently "occupied" and can be tuned to
///< the transponder of the given Channel, without disturbing any receiver
///< at priorities higher or equal to Priority.
///< If no such device is currently available, NULL will be returned.
static void Shutdown(void);
///< Closes down all devices.
///< Must be called at the end of the program.
private:
static int nextCardIndex;
int cardIndex;
protected:
cDevice(void);
virtual ~cDevice();
virtual bool Ready(void);
///< Returns true if this device is ready. Devices with conditional
///< access hardware may need some time until they are up and running.
///< This function is called in a loop at startup until all devices
///< are ready (see WaitForAllDevicesReady()).
static int NextCardIndex(int n = 0);
///< Calculates the next card index.
///< Each device in a given machine must have a unique card index, which
///< will be used to identify the device for assigning Ca parameters and
///< deciding whether to actually use that device in this particular
///< instance of VDR. Every time a new cDevice is created, it will be
///< given the current nextCardIndex, and then nextCardIndex will be
///< automatically incremented by 1. A derived class can determine whether
///< a given device shall be used by checking UseDevice(NextCardIndex()).
///< If a device is skipped, or if there are possible device indexes left
///< after a derived class has set up all its devices, NextCardIndex(n)
///< must be called, where n is the number of card indexes to skip.
virtual void MakePrimaryDevice(bool On);
///< Informs a device that it will be the primary device. If there is
///< anything the device needs to set up when it becomes the primary
///< device (On = true) or to shut down when it no longer is the primary
///< device (On = false), it should do so in this function.
///< A derived class must call the MakePrimaryDevice() function of its
///< base class.
virtual bool IsBonded(void) const { return false; }
///< Returns true if this device is bonded to an other device.
///< Only implemented by cDvbDevice and used in GetDeviceForTransponder().
///< May be dropped in a future version, if a better solution is found.
///< Do not use otherwise!
public:
bool IsPrimaryDevice(void) const { return this == primaryDevice && HasDecoder(); }
int CardIndex(void) const { return cardIndex; }
///< Returns the card index of this device (0 ... MAXDEVICES - 1).
int DeviceNumber(void) const;
///< Returns the number of this device (0 ... numDevices - 1).
virtual cString DeviceType(void) const;
///< Returns a string identifying the type of this device (like "DVB-S").
///< If this device can receive different delivery systems, the returned
///< string shall be that of the currently used system.
///< The length of the returned string should not exceed 6 characters.
///< The default implementation returns an empty string.
virtual cString DeviceName(void) const;
///< Returns a string identifying the name of this device.
///< The default implementation returns an empty string.
virtual bool HasDecoder(void) const;
///< Tells whether this device has an MPEG decoder.
virtual bool AvoidRecording(void) const { return false; }
///< Returns true if this device should only be used for recording
///< if no other device is available.
// Device hooks
private:
static cList<cDeviceHook> deviceHooks;
protected:
bool DeviceHooksProvidesTransponder(const cChannel *Channel) const;
bool DeviceHooksProvidesEIT(void) const;
// SPU facilities
private:
cLiveSubtitle *liveSubtitle;
cDvbSubtitleConverter *dvbSubtitleConverter;
public:
virtual cSpuDecoder *GetSpuDecoder(void);
///< Returns a pointer to the device's SPU decoder (or NULL, if this
///< device doesn't have an SPU decoder).
// Channel facilities
private:
mutable cMutex mutexChannel;
time_t occupiedTimeout;
protected:
static int currentChannel;
public:
virtual bool ProvidesSource(int Source) const;
///< Returns true if this device can provide the given source.
virtual bool ProvidesTransponder(const cChannel *Channel) const;
///< Returns true if this device can provide the transponder of the
///< given Channel (which implies that it can provide the Channel's
///< source).
virtual bool ProvidesTransponderExclusively(const cChannel *Channel) const;
///< Returns true if this is the only device that is able to provide
///< the given channel's transponder.
virtual bool ProvidesChannel(const cChannel *Channel, int Priority = IDLEPRIORITY, bool *NeedsDetachReceivers = NULL) const;
///< Returns true if this device can provide the given channel.
///< In case the device has cReceivers attached to it, Priority is used to
///< decide whether the caller's request can be honored.
///< The special Priority value IDLEPRIORITY will tell the caller whether this device
///< is principally able to provide the given Channel, regardless of any
///< attached cReceivers.
///< If NeedsDetachReceivers is given, the resulting value in it will tell the
///< caller whether or not it will have to detach any currently attached
///< receivers from this device before calling SwitchChannel. Note
///< that the return value in NeedsDetachReceivers is only meaningful if the
///< function itself actually returns true.
///< The default implementation always returns false, so a derived cDevice
///< class that can provide channels must implement this function.
virtual bool ProvidesEIT(void) const;
///< Returns true if this device provides EIT data and thus wants to be tuned
///< to the channels it can receive regularly to update the data.
///< The default implementation returns false.
virtual int NumProvidedSystems(void) const;
///< Returns the number of individual "delivery systems" this device provides.
///< The default implementation returns 0, so any derived class that can
///< actually provide channels must implement this function.
///< The result of this function is used when selecting a device, in order
///< to avoid devices that provide more than one system.
virtual const cPositioner *Positioner(void) const;
///< Returns a pointer to the positioner (if any) this device has used to
///< move the satellite dish to the requested position (only applies to DVB-S
///< devices). If no positioner is involved, or this is not a DVB-S device,
///< NULL will be returned.
virtual bool SignalStats(int &Valid, double *Strength = NULL, double *Cnr = NULL, double *BerPre = NULL, double *BerPost = NULL, double *Per = NULL, int *Status = NULL) const;
///< Returns statistics about the currently received signal (if available).
///< Strength is the signal strength in dBm (typical range -100dBm...0dBm).
///< Cnr is the carrier to noise ratio in dB (typical range 0dB...40dB).
///< BerPre is the bit error rate before the forward error correction (FEC).
///< BerPost is the bit error rate after the forward error correction (FEC).
///< Per is the block error rate after the forward error correction (FEC).
///< Status is the masked frontend status (signal/carrier/viterbi/sync/lock).
///< Typical range for BerPre, BerPost and Per is 0...1.
///< If any of the given pointers is not NULL, the value of the respective signal
///< statistic is returned in it. Upon return, Valid holds a combination of
///< DTV_STAT_VALID_* flags, indicating which of the returned values are actually
///< valid. If the flag for a particular parameter in Valid is 0, the returned
///< value is undefined. It depends on the device which of these parameters
///< (if any) are available.
///< Returns true if any of the requested parameters is valid.
///< If false is returned, the value in Valid is undefined.
virtual int SignalStrength(void) const;
///< Returns the "strength" of the currently received signal.
///< This is a value in the range 0 (no signal at all) through
///< 100 (best possible signal). A value of -1 indicates that this
///< device has no concept of a "signal strength".
virtual int SignalQuality(void) const;
///< Returns the "quality" of the currently received signal.
///< This is a value in the range 0 (worst quality) through
///< 100 (best possible quality). A value of -1 indicates that this
///< device has no concept of a "signal quality".
virtual const cChannel *GetCurrentlyTunedTransponder(void) const;
///< Returns a pointer to the currently tuned transponder.
///< This is not one of the channels in the global cChannels list, but rather
///< a local copy. The result may be NULL if the device is not tuned to any
///< transponder.
virtual bool IsTunedToTransponder(const cChannel *Channel) const;
///< Returns true if this device is currently tuned to the given Channel's
///< transponder.
virtual bool MaySwitchTransponder(const cChannel *Channel) const;
///< Returns true if it is ok to switch to the Channel's transponder on this
///< device, without disturbing any other activities. If an occupied timeout
///< has been set for this device, and that timeout has not yet expired,
///< this function returns false.
bool SwitchChannel(const cChannel *Channel, bool LiveView);
///< Switches the device to the given Channel, initiating transfer mode
///< if necessary.
static bool SwitchChannel(int Direction);
///< Switches the primary device to the next available channel in the given
///< Direction (only the sign of Direction is evaluated, positive values
///< switch to higher channel numbers).
private:
eSetChannelResult SetChannel(const cChannel *Channel, bool LiveView);
///< Sets the device to the given channel (general setup).
protected:
virtual bool SetChannelDevice(const cChannel *Channel, bool LiveView);
///< Sets the device to the given channel (actual physical setup).
public:
static int CurrentChannel(void) { return primaryDevice ? currentChannel : 0; }
///< Returns the number of the current channel on the primary device.
#ifndef DEPRECATED_SETCURRENTCHANNEL
#define DEPRECATED_SETCURRENTCHANNEL 0
#endif
#if DEPRECATED_SETCURRENTCHANNEL
static void SetCurrentChannel(const cChannel *Channel) { currentChannel = Channel ? Channel->Number() : 0; }
#endif
static void SetCurrentChannel(int ChannelNumber) { currentChannel = ChannelNumber; }
///< Sets the number of the current channel on the primary device, without
///< actually switching to it. This can be used to correct the current
///< channel number while replaying.
void ForceTransferMode(void);
///< Forces the device into transfermode for the current channel.
int Occupied(void) const;
///< Returns the number of seconds this device is still occupied for.
void SetOccupied(int Seconds);
///< Sets the occupied timeout for this device to the given number of
///< Seconds, This can be used to tune a device to a particular transponder
///< and make sure it will stay there for a certain amount of time, for
///< instance to collect EPG data. This function shall only be called
///< after the device has been successfully tuned to the requested transponder.
///< Seconds will be silently limited to MAXOCCUPIEDTIMEOUT. Values less than
///< 0 will be silently ignored.
virtual bool HasLock(int TimeoutMs = 0) const;
///< Returns true if the device has a lock on the requested transponder.
///< Default is true, a specific device implementation may return false
///< to indicate that it is not ready yet.
///< If TimeoutMs is not zero, waits for the given number of milliseconds
///< before returning false.
virtual bool HasProgramme(void) const;
///< Returns true if the device is currently showing any programme to
///< the user, either through replaying or live.
// PID handle facilities
private:
mutable cMutex mutexPids;
virtual void Action(void);
protected:
enum ePidType { ptAudio, ptVideo, ptPcr, ptTeletext, ptDolby, ptOther };
class cPidHandle {
public:
int pid;
int streamType;
int handle;
int used;
cPidHandle(void) { pid = streamType = used = 0; handle = -1; }
};
cPidHandle pidHandles[MAXPIDHANDLES];
bool HasPid(int Pid) const;
///< Returns true if this device is currently receiving the given PID.
bool AddPid(int Pid, ePidType PidType = ptOther, int StreamType = 0);
///< Adds a PID to the set of PIDs this device shall receive.
void DelPid(int Pid, ePidType PidType = ptOther);
///< Deletes a PID from the set of PIDs this device shall receive.
virtual bool SetPid(cPidHandle *Handle, int Type, bool On);
///< Does the actual PID setting on this device.
///< On indicates whether the PID shall be added or deleted.
///< Handle->handle can be used by the device to store information it
///< needs to receive this PID (for instance a file handle).
///< Handle->used indicates how many receivers are using this PID.
///< Type indicates some special types of PIDs, which the device may
///< need to set in a specific way.
public:
void DelLivePids(void);
///< Deletes the live viewing PIDs.
// Section filter facilities
private:
cSectionHandler *sectionHandler;
cEitFilter *eitFilter;
cPatFilter *patFilter;
cSdtFilter *sdtFilter;
cNitFilter *nitFilter;
protected:
void StartSectionHandler(void);
///< A derived device that provides section data must call
///< this function (typically in its constructor) to actually set
///< up the section handler.
void StopSectionHandler(void);
///< A device that has called StartSectionHandler() must call this
///< function (typically in its destructor) to stop the section
///< handler.
public:
virtual int OpenFilter(u_short Pid, u_char Tid, u_char Mask);
///< Opens a file handle for the given filter data.
///< A derived device that provides section data must
///< implement this function.
virtual int ReadFilter(int Handle, void *Buffer, size_t Length);
///< Reads data from a handle for the given filter.
///< A derived class need not implement this function, because this
///< is done by the default implementation.
virtual void CloseFilter(int Handle);
///< Closes a file handle that has previously been opened
///< by OpenFilter(). If this is as simple as calling close(Handle),
///< a derived class need not implement this function, because this
///< is done by the default implementation.
void AttachFilter(cFilter *Filter);
///< Attaches the given filter to this device.
void Detach(cFilter *Filter);
///< Detaches the given filter from this device.
const cSdtFilter *SdtFilter(void) const { return sdtFilter; }
cSectionHandler *SectionHandler(void) const { return sectionHandler; }
// Common Interface facilities:
private:
cCamSlot *camSlot;
void ReleaseCamSlot(void);
///< Releases the CAM slot if it is currently not used.
public:
virtual bool HasCi(void);
///< Returns true if this device has a Common Interface.
virtual bool HasInternalCam(void) { return false; }
///< Returns true if this device handles encrypted channels itself
///< without VDR assistance. This can be e.g. if the device is a
///< client that gets the stream from another VDR instance that has
///< already decrypted the stream. In this case ProvidesChannel()
///< shall check whether the channel can be decrypted.
void SetCamSlot(cCamSlot *CamSlot);
///< Sets the given CamSlot to be used with this device.
cCamSlot *CamSlot(void) const { return camSlot; }
///< Returns the CAM slot that is currently used with this device,
///< or NULL if no CAM slot is in use.
// Image Grab facilities
public:
virtual uchar *GrabImage(int &Size, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);
///< Grabs the currently visible screen image.
///< Size is the size of the returned data block.
///< If Jpeg is true it will write a JPEG file. Otherwise a PNM file will be written.
///< Quality is the compression factor for JPEG. 1 will create a very blocky
///< and small image, 70..80 will yield reasonable quality images while keeping the
///< image file size around 50 KB for a full frame. The default will create a big
///< but very high quality image.
///< SizeX is the number of horizontal pixels in the frame (default is the current screen width).
///< SizeY is the number of vertical pixels in the frame (default is the current screen height).
///< Returns a pointer to the grabbed image data, or NULL in case of an error.
///< The caller takes ownership of the returned memory and must free() it once it isn't needed any more.
bool GrabImageFile(const char *FileName, bool Jpeg = true, int Quality = -1, int SizeX = -1, int SizeY = -1);
///< Calls GrabImage() and stores the resulting image in a file with the given name.
///< Returns true if all went well.
///< The caller is responsible for making sure that the given file name
///< doesn't lead to overwriting any important other file.
// Video format facilities
public:
virtual void SetVideoDisplayFormat(eVideoDisplayFormat VideoDisplayFormat);
///< Sets the video display format to the given one (only useful
///< if this device has an MPEG decoder).
///< A derived class must first call the base class function!
///< NOTE: this is only for SD devices. HD devices shall implement their
///< own setup menu with the necessary parameters for controlling output.
virtual void SetVideoFormat(bool VideoFormat16_9);
///< Sets the output video format to either 16:9 or 4:3 (only useful
///< if this device has an MPEG decoder).
///< NOTE: this is only for SD devices. HD devices shall implement their
///< own setup menu with the necessary parameters for controlling output.
virtual void GetVideoSize(int &Width, int &Height, double &VideoAspect);
///< Returns the Width, Height and VideoAspect ratio of the currently
///< displayed video material. Width and Height are given in pixel
///< (e.g. 720x576) and VideoAspect is e.g. 1.33333 for a 4:3 broadcast,
///< or 1.77778 for 16:9.
///< The default implementation returns 0 for Width and Height
///< and 1.0 for VideoAspect.
virtual void GetOsdSize(int &Width, int &Height, double &PixelAspect);
///< Returns the Width, Height and PixelAspect ratio the OSD should use
///< to best fit the resolution of the output device. If PixelAspect
///< is not 1.0, the OSD may take this as a hint to scale its
///< graphics in a way that, e.g., a circle will actually
///< show up as a circle on the screen, and not as an ellipse.
///< Values greater than 1.0 mean to stretch the graphics in the
///< vertical direction (or shrink it in the horizontal direction,
///< depending on which dimension shall be fixed). Values less than
///< 1.0 work the other way round. Note that the OSD is not guaranteed
///< to actually use this hint.
// Track facilities
private:
tTrackId availableTracks[ttMaxTrackTypes];
eTrackType currentAudioTrack;
eTrackType currentSubtitleTrack;
cMutex mutexCurrentAudioTrack;
cMutex mutexCurrentSubtitleTrack;
int currentAudioTrackMissingCount;
bool autoSelectPreferredSubtitleLanguage;
bool keepTracks;
int pre_1_3_19_PrivateStream;
protected:
virtual void SetAudioTrackDevice(eTrackType Type);
///< Sets the current audio track to the given value.
virtual void SetSubtitleTrackDevice(eTrackType Type);
///< Sets the current subtitle track to the given value.
public:
void ClrAvailableTracks(bool DescriptionsOnly = false, bool IdsOnly = false);
///< Clears the list of currently available tracks. If DescriptionsOnly
///< is true, only the track descriptions will be cleared. With IdsOnly
///< set to true only the ids will be cleared. IdsOnly is only taken
///< into account if DescriptionsOnly is false.
bool SetAvailableTrack(eTrackType Type, int Index, uint16_t Id, const char *Language = NULL, const char *Description = NULL);
///< Sets the track of the given Type and Index to the given values.
///< Type must be one of the basic eTrackType values, like ttAudio or ttDolby.
///< Index tells which track of the given basic type is meant.
///< If Id is 0 any existing id will be left untouched and only the
///< given Language and Description will be set.
///< Returns true if the track was set correctly, false otherwise.
const tTrackId *GetTrack(eTrackType Type);
///< Returns a pointer to the given track id, or NULL if Type is not
///< less than ttMaxTrackTypes.
int NumTracks(eTrackType FirstTrack, eTrackType LastTrack) const;
///< Returns the number of tracks in the given range that are currently
///< available.
int NumAudioTracks(void) const;
///< Returns the number of audio tracks that are currently available.
///< This is just for information, to quickly find out whether there
///< is more than one audio track.
int NumSubtitleTracks(void) const;
///< Returns the number of subtitle tracks that are currently available.
eTrackType GetCurrentAudioTrack(void) const { return currentAudioTrack; }
bool SetCurrentAudioTrack(eTrackType Type);
///< Sets the current audio track to the given Type.
///< Returns true if Type is a valid audio track, false otherwise.
eTrackType GetCurrentSubtitleTrack(void) const { return currentSubtitleTrack; }
bool SetCurrentSubtitleTrack(eTrackType Type, bool Manual = false);
///< Sets the current subtitle track to the given Type.
///< IF Manual is true, no automatic preferred subtitle language selection
///< will be done for the rest of the current replay session, or until
///< the channel is changed.
///< Returns true if Type is a valid subtitle track, false otherwise.
void EnsureAudioTrack(bool Force = false);
///< Makes sure an audio track is selected that is actually available.
///< If Force is true, the language and Dolby Digital settings will
///< be verified even if the current audio track is available.
void EnsureSubtitleTrack(void);
///< Makes sure one of the preferred language subtitle tracks is selected.
///< Only has an effect if Setup.DisplaySubtitles is on.
void SetKeepTracks(bool KeepTracks) { keepTracks = KeepTracks; }
///< Controls whether the current audio and subtitle track settings shall
///< be kept as they currently are, or if they shall be automatically
///< adjusted. This is used when pausing live video.
// Audio facilities
private:
bool mute;
int volume;
protected:
virtual int GetAudioChannelDevice(void);
///< Gets the current audio channel, which is stereo (0), mono left (1) or
///< mono right (2).
virtual void SetAudioChannelDevice(int AudioChannel);
///< Sets the audio channel to stereo (0), mono left (1) or mono right (2).
virtual void SetVolumeDevice(int Volume);
///< Sets the audio volume on this device (Volume = 0...255).
virtual void SetDigitalAudioDevice(bool On);
///< Tells the output device that the current audio track is Dolby Digital.
///< Only used by the original "full featured" DVB cards - do not use for new
///< developments!
public:
bool IsMute(void) const { return mute; }
bool ToggleMute(void);
///< Turns the volume off or on and returns the new mute state.
int GetAudioChannel(void);
///< Gets the current audio channel, which is stereo (0), mono left (1) or
///< mono right (2).
void SetAudioChannel(int AudioChannel);
///< Sets the audio channel to stereo (0), mono left (1) or mono right (2).
///< Any other values will be silently ignored.
void SetVolume(int Volume, bool Absolute = false);
///< Sets the volume to the given value, either absolutely or relative to
///< the current volume.
static int CurrentVolume(void) { return primaryDevice ? primaryDevice->volume : 0; }//XXX???
// Player facilities
private:
cPlayer *player;
cPatPmtParser patPmtParser;
cTsToPes tsToPesVideo;
cTsToPes tsToPesAudio;
cTsToPes tsToPesSubtitle;
bool isPlayingVideo;
protected:
const cPatPmtParser *PatPmtParser(void) const { return &patPmtParser; }
///< Returns a pointer to the patPmtParser, so that a derived device
///< can use the stream information from it.
virtual bool CanReplay(void) const;
///< Returns true if this device can currently start a replay session.
virtual bool SetPlayMode(ePlayMode PlayMode);
///< Sets the device into the given play mode.
///< Returns true if the operation was successful.
virtual int PlayVideo(const uchar *Data, int Length);
///< Plays the given data block as video.
///< Data points to exactly one complete PES packet of the given Length.
///< PlayVideo() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< Returns the number of bytes actually taken from Data, or -1
///< in case of an error.
virtual int PlayAudio(const uchar *Data, int Length, uchar Id);
///< Plays the given data block as audio.
///< Data points to exactly one complete PES packet of the given Length.
///< Id indicates the type of audio data this packet holds.
///< PlayAudio() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< Returns the number of bytes actually taken from Data, or -1
///< in case of an error.
virtual int PlaySubtitle(const uchar *Data, int Length);
///< Plays the given data block as a subtitle.
///< Data points to exactly one complete PES packet of the given Length.
///< PlaySubtitle() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< Returns the number of bytes actually taken from Data, or -1
///< in case of an error.
virtual int PlayPesPacket(const uchar *Data, int Length, bool VideoOnly = false);
///< Plays the single PES packet in Data with the given Length.
///< If VideoOnly is true, only the video will be displayed,
///< which is necessary for trick modes like 'fast forward'.
///< Data must point to one single, complete PES packet.
virtual int PlayTsVideo(const uchar *Data, int Length);
///< Plays the given data block as video.
///< Data points to exactly one complete TS packet of the given Length
///< (which is always TS_SIZE).
///< PlayTsVideo() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< The default implementation collects all incoming TS payload belonging
///< to one PES packet and calls PlayVideo() with the resulting packet.
virtual int PlayTsAudio(const uchar *Data, int Length);
///< Plays the given data block as audio.
///< Data points to exactly one complete TS packet of the given Length
///< (which is always TS_SIZE).
///< PlayTsAudio() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< The default implementation collects all incoming TS payload belonging
///< to one PES packet and calls PlayAudio() with the resulting packet.
virtual int PlayTsSubtitle(const uchar *Data, int Length);
///< Plays the given data block as a subtitle.
///< Data points to exactly one complete TS packet of the given Length
///< (which is always TS_SIZE).
///< PlayTsSubtitle() shall process the packet either as a whole (returning
///< Length) or not at all (returning 0 or -1 and setting 'errno' accordingly).
///< The default implementation collects all incoming TS payload belonging
///< to one PES packet and displays the resulting subtitle via the OSD.
public:
virtual int64_t GetSTC(void);
///< Gets the current System Time Counter, which can be used to
///< synchronize audio, video and subtitles. If this device is able to
///< replay, it must provide an STC.
///< The value returned doesn't need to be an actual "clock" value,
///< it is sufficient if it holds the PTS (Presentation Time Stamp) of
///< the most recently presented frame. A proper value must be returned
///< in normal replay mode as well as in any trick modes (like slow motion,
///< fast forward/rewind).
///< Only the lower 32 bit of this value are actually used, since some
///< devices can't handle the msb correctly.
virtual bool IsPlayingVideo(void) const { return isPlayingVideo; }
///< Returns true if the currently attached player has delivered
///< any video packets.
virtual cRect CanScaleVideo(const cRect &Rect, int Alignment = taCenter) { return cRect::Null; }
///< Asks the output device whether it can scale the currently shown video in
///< such a way that it fits into the given Rect, while retaining its proper
///< aspect ratio. If the scaled video doesn't exactly fit into Rect, Alignment
///< is used to determine how to align the actual rectangle with the requested
///< one. The actual rectangle can be smaller, larger or the same size as the
///< given Rect, and its location may differ, depending on the capabilities of
///< the output device, which may not be able to display a scaled video at
///< arbitrary sizes and locations. The device shall, however, do its best to
///< match the requested Rect as closely as possible, preferring a size and
///< location that fits completely into the requested Rect if possible.
///< Returns the rectangle that can actually be used when scaling the video.
///< A skin plugin using this function should rearrange its content according
///< to the rectangle returned from calling this function, and should especially
///< be prepared for cases where the returned rectangle is way off the requested
///< Rect, or even Null. In such cases, the skin may want to fall back to
///< working with full screen video.
///< The coordinates of Rect are in the range of the width and height returned
///< by GetOsdSize().
///< If this device can't scale the video, a Null rectangle is returned (this
///< is also the default implementation).
virtual void ScaleVideo(const cRect &Rect = cRect::Null) {}
///< Scales the currently shown video in such a way that it fits into the given
///< Rect. Rect should be one retrieved through a previous call to
///< CanScaleVideo() (otherwise results may be undefined).
///< Even if video output is scaled, the functions GetVideoSize() and
///< GetOsdSize() must still return the same values as if in full screen mode!
///< If this device can't scale the video, nothing happens.
///< To restore full screen video, call this function with a Null rectangle.
virtual bool HasIBPTrickSpeed(void) { return false; }
///< Returns true if this device can handle all frames in 'fast forward'
///< trick speeds.
virtual void TrickSpeed(int Speed, bool Forward);
///< Sets the device into a mode where replay is done slower.
///< Every single frame shall then be displayed the given number of
///< times. Forward is true if replay is done in the normal (forward)
///< direction, false if it is done reverse.
///< The cDvbPlayer uses the following values for the various speeds:
///< 1x 2x 3x
///< Fast Forward 6 3 1
///< Fast Reverse 6 3 1
///< Slow Forward 8 4 2
///< Slow Reverse 63 48 24
virtual void Clear(void);
///< Clears all video and audio data from the device.
///< A derived class must call the base class function to make sure
///< all registered cAudio objects are notified.
virtual void Play(void);
///< Sets the device into play mode (after a previous trick
///< mode).
virtual void Freeze(void);
///< Puts the device into "freeze frame" mode.
virtual void Mute(void);
///< Turns off audio while replaying.
///< A derived class must call the base class function to make sure
///< all registered cAudio objects are notified.
virtual void StillPicture(const uchar *Data, int Length);
///< Displays the given I-frame as a still picture.
///< Data points either to a series of TS (first byte is 0x47) or PES (first byte
///< is 0x00) data of the given Length. The default implementation
///< converts TS to PES and calls itself again, allowing a derived class
///< to display PES if it can't handle TS directly.
virtual bool Poll(cPoller &Poller, int TimeoutMs = 0);
///< Returns true if the device itself or any of the file handles in
///< Poller is ready for further action.
///< If TimeoutMs is not zero, the device will wait up to the given number
///< of milliseconds before returning in case it can't accept any data.
virtual bool Flush(int TimeoutMs = 0);
///< Returns true if the device's output buffers are empty, i. e. any
///< data which was buffered so far has been processed.
///< If TimeoutMs is not zero, the device will wait up to the given
///< number of milliseconds before returning in case there is still
///< data in the buffers.
virtual int PlayPes(const uchar *Data, int Length, bool VideoOnly = false);
///< Plays all valid PES packets in Data with the given Length.
///< If Data is NULL any leftover data from a previous call will be
///< discarded. If VideoOnly is true, only the video will be displayed,
///< which is necessary for trick modes like 'fast forward'.
///< Data should point to a sequence of complete PES packets. If the
///< last packet in Data is not complete, it will be copied and combined
///< to a complete packet with data from the next call to PlayPes().
///< That way any functions called from within PlayPes() will be
///< guaranteed to always receive complete PES packets.
virtual int PlayTs(const uchar *Data, int Length, bool VideoOnly = false);
///< Plays the given TS packet.
///< If VideoOnly is true, only the video will be displayed,
///< which is necessary for trick modes like 'fast forward'.
///< Data points to a single TS packet, Length is always TS_SIZE (the total
///< size of a single TS packet).
///< If Data is NULL any leftover data from a previous call will be
///< discarded.
///< A derived device can reimplement this function to handle the
///< TS packets itself. Any packets the derived function can't handle
///< must be sent to the base class function. This applies especially
///< to the PAT/PMT packets.
///< Returns -1 in case of error, otherwise the number of actually
///< processed bytes is returned.
///< PlayTs() shall process the TS packets either as a whole (returning
///< TS_SIZE) or not at all, returning 0 or -1 and setting 'errno' accordingly).
bool Replaying(void) const;
///< Returns true if we are currently replaying.
bool Transferring(void) const;
///< Returns true if we are currently in Transfer Mode.
void StopReplay(void);
///< Stops the current replay session (if any).
bool AttachPlayer(cPlayer *Player);
///< Attaches the given player to this device.
void Detach(cPlayer *Player);
///< Detaches the given player from this device.
// Receiver facilities
private:
mutable cMutex mutexReceiver;
cReceiver *receiver[MAXRECEIVERS];
public:
int Priority(void) const;
///< Returns the priority of the current receiving session (-MAXPRIORITY..MAXPRIORITY),
///< or IDLEPRIORITY if no receiver is currently active.
protected:
virtual bool OpenDvr(void);
///< Opens the DVR of this device and prepares it to deliver a Transport
///< Stream for use in a cReceiver.
virtual void CloseDvr(void);
///< Shuts down the DVR.
virtual bool GetTSPacket(uchar *&Data);
///< Gets exactly one TS packet from the DVR of this device and returns
///< a pointer to it in Data. Only the first 188 bytes (TS_SIZE) Data
///< points to are valid and may be accessed. If there is currently no
///< new data available, Data will be set to NULL. The function returns
///< false in case of a non recoverable error, otherwise it returns true,
///< even if Data is NULL.
public:
bool Receiving(bool Dummy = false) const;
///< Returns true if we are currently receiving. The parameter has no meaning (for backwards compatibility only).
bool AttachReceiver(cReceiver *Receiver);
///< Attaches the given receiver to this device.
void Detach(cReceiver *Receiver, bool ReleaseCam = true);
///< Detaches the given receiver from this device.
///< If ReleaseCam is true, the CAM slot will be released if it
///< is no longer used. Otherwise the caller must call ReleaseCamSlot() after
///< calling this function.
void DetachAll(int Pid);
///< Detaches all receivers from this device for this pid.
virtual void DetachAllReceivers(void);
///< Detaches all receivers from this device.
};
/// Derived cDevice classes that can receive channels will have to provide
/// Transport Stream (TS) packets one at a time. cTSBuffer implements a
/// simple buffer that allows the device to read a larger amount of data
/// from the driver with each call to Read(), thus avoiding the overhead
/// of getting each TS packet separately from the driver. It also makes
/// sure the returned data points to a TS packet and automatically
/// re-synchronizes after broken packets.
class cTSBuffer : public cThread {
private:
int f;
int deviceNumber;
int delivered;
cRingBufferLinear *ringBuffer;
virtual void Action(void);
public:
cTSBuffer(int File, int Size, int DeviceNumber);
virtual ~cTSBuffer();
uchar *Get(int *Available = NULL, bool CheckAvailable = false);
///< Returns a pointer to the first TS packet in the buffer. If Available is given,
///< it will return the total number of consecutive bytes pointed to in the buffer.
///< It is guaranteed that the returned pointer points to a TS_SYNC_BYTE and that
///< there are at least TS_SIZE bytes in the buffer. Otherwise NULL will be
///< returned and the value in Available (if given) is undefined.
///< Each call to Get() returns a pointer to the next TS packet in the buffer.
///< If CheckAvailable is true, the buffer will be checked whether it contains
///< at least TS_SIZE bytes before trying to get any data from it. Otherwise, if
///< the buffer is empty, this function will wait a little while for the buffer
///< to be filled again.
void Skip(int Count);
///< If after a call to Get() more or less than TS_SIZE of the available data
///< has been processed, a call to Skip() with the number of processed bytes
///< will disable the automatic incrementing of the data pointer as described
///< in Get() and skip the given number of bytes instead. Count may be 0 if the
///< caller wants the previous TS packet to be delivered again in the next call
///< to Get().
};
#endif //__DEVICE_H
|