MythTV  master
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1 // -*- Mode: c++ -*-
2 /*
3  * Copyright (C) Kenneth Aafloy 2003
4  *
5  * Copyright notice is in dvbchannel.cpp of the MythTV project.
6  */
8 #ifndef DVBCHANNEL_H
9 #define DVBCHANNEL_H
11 #include <QObject>
12 #include <QString>
13 #include <QMap>
15 #include "mythcontext.h"
16 #include "mythdbcon.h"
17 #include "dtvchannel.h"
18 #include "dtvconfparserhelpers.h" // for DTVTunerType
19 #include "streamlisteners.h"
20 #include "diseqc.h"
22 class TVRec;
23 class DVBCam;
24 class DVBRecorder;
25 class DVBChannel;
27 using IsOpenMap = QMap<const DVBChannel*,bool>;
29 class DVBChannel : public DTVChannel
30 {
31  public:
32  explicit DVBChannel(QString device, TVRec *parent = nullptr);
33  ~DVBChannel() override;
35  bool Open(void) override // ChannelBase
36  { return Open(this); }
37  void Close(void) override // ChannelBase
38  { Close(this); }
40  bool Init(QString &startchannel, bool setchan) override; // ChannelBase
42  // Sets
43  void SetPMT(const ProgramMapTable *pmt);
44  void SetTimeOffset(double offset);
45  void SetSlowTuning(uint how_slow_in_ms)
46  { m_tuningDelay = how_slow_in_ms; }
48  // Gets
49  bool IsOpen(void) const override; // ChannelBase
50  int GetFd(void) const override // ChannelBase
51  { return m_fdFrontend; }
52  bool IsTuningParamsProbeSupported(void) const;
54  QString GetDevice(void) const override // ChannelBase
55  { return m_device; }
57  QString GetCardNum(void) const { return m_device; };
59  QString GetFrontendName(void) const { return m_frontendName; }
60  bool IsMaster(void) const override; // DTVChannel
62  bool HasCRCBug(void) const { return m_hasCrcBug; }
65  const DiSEqCDevRotor *GetRotor(void) const;
68  bool HasLock(bool *ok = nullptr) const;
70  double GetSignalStrength(bool *ok = nullptr) const;
78  double GetSNR(bool *ok = nullptr) const;
80  double GetBitErrorRate(bool *ok = nullptr) const;
82  double GetUncorrectedBlockCount(bool *ok = nullptr) const;
84  // Commands
85  bool SwitchToInput(int newcapchannel, bool setstarting);
86  using DTVChannel::Tune;
87  bool Tune(const DTVMultiplex &tuning) override; // DTVChannel
88  bool Tune(const DTVMultiplex &tuning,
89  bool force_reset = false, bool same_input = false);
90  bool Retune(void) override; // ChannelBase
92  bool ProbeTuningParams(DTVMultiplex &tuning) const;
94  private:
95  bool Open(DVBChannel *who);
96  void Close(DVBChannel *who);
98  int GetChanID(void) const override; // ChannelBase
100  void CheckOptions(DTVMultiplex &t) const override; // DTVChannel
101  void CheckFrequency(uint64_t frequency) const;
102  bool CheckModulation(DTVModulation modulation) const;
103  bool CheckCodeRate(DTVCodeRate rate) const;
105  DVBChannel *GetMasterLock(void) const;
106  static void ReturnMasterLock(DVBChannel* &dvbm);
112  double GetSignalStrengthDVBv5(bool *ok) const;
117  double GetSNRDVBv5(bool *ok) const;
121  double GetBitErrorRateDVBv5(bool *ok) const;
125  double GetUncorrectedBlockCountDVBv5(bool *ok) const;
127  private:
130  // Data
134  DVBCam *m_dvbCam {nullptr};
136  // Device info
137  QString m_frontendName;
138  uint64_t m_capabilities {0};
139  uint64_t m_extModulations {0};
140  uint64_t m_frequencyMinimum {0};
141  uint64_t m_frequencyMaximum {0};
145  // Tuning State
146  mutable QMutex m_tuneLock;
147  mutable QMutex m_hwLock {QMutex::Recursive};
160  bool m_firstTune {true};
162  // Other State
164  int m_fdFrontend {-1};
165  QString m_device;
166  bool m_hasCrcBug {false};
169  static QDateTime s_lastTuning;
171 };
173 #endif
double GetSignalStrength(bool *ok=nullptr) const
Returns signal strength in the range [0.0..1.0] (non-calibrated).
double GetBitErrorRate(bool *ok=nullptr) const
Returns # of corrected bits since last call. First call undefined.
DTVMultiplex m_prevTuning
Last tuning options Tune() succesfully sent to hardware.
Definition: dvbchannel.h:151
DiSEqCDevTree * m_diseqcTree
Definition: dvbchannel.h:132
DVBCam * m_dvbCam
Used to decrypt encrypted streams.
Definition: dvbchannel.h:134
bool m_hasCrcBug
true iff our driver munges PMT
Definition: dvbchannel.h:167
bool IsMaster(void) const override
Returns true if this is the first of a number of multi-rec devs.
DVB-S device settings class.
Definition: diseqc.h:35
~DVBChannel() override
Definition: dvbchannel.cpp:101
uint64_t m_capabilities
Definition: dvbchannel.h:138
int GetChanID(void) const override
Returns Channel ID.
Definition: dvbchannel.cpp:953
This is a specialization of DTVRecorder used to handle streams from DVB drivers.
Definition: dvbrecorder.h:21
void CheckFrequency(uint64_t frequency) const
Checks tuning frequency.
Definition: dvbchannel.cpp:333
uint m_sigMonDelay
Minimum delay between FE_LOCK checks.
Definition: dvbchannel.h:158
DVBChannel * GetMasterLock(void) const
double GetSignalStrengthDVBv5(bool *ok) const
Get Signal strength from the DVBv5 interface [0-1.0] It is transformed to a linear relative scale if ...
uint m_symbolRateMinimum
Definition: dvbchannel.h:142
int GetFd(void) const override
Returns file descriptor, -1 if it does not exist.
Definition: dvbchannel.h:50
Provides interface to the tuning hardware when using DVB drivers.
Definition: dvbchannel.h:29
double GetUncorrectedBlockCountDVBv5(bool *ok) const
Get Uncorrected Block Count from the DVBv5 interface.
uint64_t m_extModulations
Definition: dvbchannel.h:139
QString m_frontendName
Definition: dvbchannel.h:137
uint64_t m_frequencyMinimum
Definition: dvbchannel.h:140
const DiSEqCDevRotor * GetRotor(void) const
Returns rotor object if it exists, nullptr otherwise.
Definition: dvbchannel.cpp:999
bool Retune(void) override
Definition: dvbchannel.cpp:841
bool m_firstTune
Used to force hardware reset.
Definition: dvbchannel.h:160
void SetTimeOffset(double offset)
Tells the Conditional Access Module the offset from the computers utc time to dvb time.
Definition: dvbchannel.cpp:507
Definition: dvbcam.h:23
double GetUncorrectedBlockCount(bool *ok=nullptr) const
Returns # of uncorrected blocks since last call. First call undefined.
void SetSlowTuning(uint how_slow_in_ms)
Definition: dvbchannel.h:45
bool Open(void) override
Opens the channel changing hardware for use.
Definition: dvbchannel.h:35
QMutex m_tuneLock
Definition: dvbchannel.h:146
double GetSNRDVBv5(bool *ok) const
Get SNR from the DVBv5 interface [0-1.0] It is transformed to a linear relative scale if provided in ...
DVBChannel(QString device, TVRec *parent=nullptr)
Definition: dvbchannel.cpp:76
Class providing a generic interface to digital tuning hardware.
Definition: dtvchannel.h:34
bool HasLock(bool *ok=nullptr) const
Returns true iff we have a signal carrier lock.
This is the coordinating class of the Recorder Subsystem.
Definition: tv_rec.h:142
QString GetFrontendName(void) const
Returns frontend name as reported by driver.
Definition: dvbchannel.h:59
static QDateTime s_lastTuning
Definition: dvbchannel.h:169
bool ProbeTuningParams(DTVMultiplex &tuning) const
Fetches DTVMultiplex params from driver.
Definition: dvbchannel.cpp:895
Rotor class.
Definition: diseqc.h:295
void SetPMT(const ProgramMapTable *pmt)
Tells the Conditional Access Module which streams we wish to decode.
Definition: dvbchannel.cpp:495
QString m_device
DVB Device.
Definition: dvbchannel.h:165
unsigned int uint
Definition: compat.h:140
uint GetMinSignalMonitorDelay(void) const
Definition: dvbchannel.h:63
bool IsOpen(void) const override
Reports whether channel is already open.
Definition: dvbchannel.cpp:314
QMutex m_hwLock
Definition: dvbchannel.h:147
virtual bool Tune(const DTVMultiplex &tuning)=0
This performs the actual frequency tuning and in some cases input switching.
QMutex m_tuneDelayLock
Definition: dvbchannel.h:170
static void ReturnMasterLock(DVBChannel *&dvbm)
QString GetCardNum(void) const
Returns DVB device number, used to construct filenames for DVB devices.
Definition: dvbchannel.h:57
static int x0
Definition: mythsocket.cpp:59
bool Tune(const DTVMultiplex &tuning) override
This performs the actual frequency tuning and in some cases input switching.
Definition: dvbchannel.cpp:513
double GetSNR(bool *ok=nullptr) const
Returns signal/noise in the range [0..1.0].
int m_fdFrontend
File descriptor for tuning hardware.
Definition: dvbchannel.h:164
bool CheckModulation(DTVModulation modulation) const
Return true iff modulation is supported modulation on the frontend.
Definition: dvbchannel.cpp:470
bool Init(QString &startchannel, bool setchan) override
Definition: dvbchannel.cpp:322
QString GetDevice(void) const override
Returns String representing device, useful for debugging.
Definition: dvbchannel.h:54
bool IsTuningParamsProbeSupported(void) const
Returns true iff tuning info probing is working.
Definition: dvbchannel.cpp:849
void Close(void) override
Closes the channel changing hardware to use.
Definition: dvbchannel.h:37
QMap< const DVBChannel *, bool > IsOpenMap
Definition: dvbchannel.h:27
bool CheckCodeRate(DTVCodeRate rate) const
Return true iff rate is supported rate on the frontend.
Definition: dvbchannel.cpp:451
double GetBitErrorRateDVBv5(bool *ok) const
Get Bit Error Rate from the DVBv5 interface.
void CheckOptions(DTVMultiplex &t) const override
Checks tuning for problems, and tries to fix them.
Definition: dvbchannel.cpp:346
uint m_tuningDelay
Extra delay to add for broken drivers.
Definition: dvbchannel.h:156
uint m_symbolRateMaximum
Definition: dvbchannel.h:143
DiSEqCDevSettings m_diseqcSettings
Definition: dvbchannel.h:131
A PMT table maps a program described in the ProgramAssociationTable to various PID's which describe t...
Definition: mpegtables.h:666
DVB-S device tree class.
Definition: diseqc.h:73
IsOpenMap m_isOpen
Definition: dvbchannel.h:128
uint64_t m_frequencyMaximum
Definition: dvbchannel.h:141
uint m_lastLnbDevId
Definition: dvbchannel.h:153
bool SwitchToInput(int newcapchannel, bool setstarting)
bool HasCRCBug(void) const
Returns true iff we have a faulty DVB driver that munges PMT.
Definition: dvbchannel.h:62
DTVMultiplex m_desiredTuning
Last tuning options Tune() attempted to send to hardware.
Definition: dvbchannel.h:149