dvbchannel.h

Go to the documentation of this file.

// -*- Mode: c++ -*-
/*
 *  Copyright (C) Kenneth Aafloy 2003
 *
 *  Copyright notice is in dvbchannel.cpp of the MythTV project.
 */

#ifndef DVBCHANNEL_H
#define DVBCHANNEL_H

#include <QObject>
#include <QString>
#include <QMap>

#include "mythcontext.h"
#include "mythdbcon.h"
#include "dtvchannel.h"
#include "dtvconfparserhelpers.h" // for DTVTunerType
#include "streamlisteners.h"
#include "diseqc.h"

class TVRec;
class DVBCam;
class DVBRecorder;
class DVBChannel;

typedef QMap<const DVBChannel*,bool> IsOpenMap;

class DVBChannel : public DTVChannel
{
  public:
    DVBChannel(const QString &device, TVRec *parent = NULL);
    ~DVBChannel();

    bool Open(void) { return Open(this); }
    void Close(void) { Close(this); }

    bool Init(QString &inputname, QString &startchannel, bool setchan);

    // Sets
    void SetPMT(const ProgramMapTable*);
    void SetTimeOffset(double offset);
    void SetSlowTuning(uint how_slow_in_ms)
        { tuning_delay = how_slow_in_ms; }

    // Gets
    bool IsOpen(void) const;
    int  GetFd(void)                    const { return fd_frontend; }
    bool IsTuningParamsProbeSupported(void) const;

    QString GetDevice(void)             const { return device; }
    QString GetCardNum(void)            const { return device; };
    QString GetFrontendName(void)       const;
    bool IsMaster(void)                 const;
    bool HasCRCBug(void)                const { return has_crc_bug; }
    uint GetMinSignalMonitorDelay(void) const { return sigmon_delay; }
    const DiSEqCDevRotor *GetRotor(void) const;

    bool HasLock(bool *ok = NULL) const;
    double GetSignalStrength(bool *ok = NULL) const;
    double GetSNR(bool *ok = NULL) const;
    double GetBitErrorRate(bool *ok = NULL) const;
    double GetUncorrectedBlockCount(bool *ok = NULL) const;

    // Commands
    bool SwitchToInput(const QString &inputname, const QString &chan);
    bool SwitchToInput(int newcapchannel, bool setstarting);
    bool Tune(const DTVMultiplex &tuning, QString inputname);
    bool Tune(const DTVMultiplex &tuning, uint inputid,
              bool force_reset = false, bool same_input = false);
    bool Retune(void);

    bool ProbeTuningParams(DTVMultiplex &tuning) const;

  private:
    bool Open(DVBChannel*);
    void Close(DVBChannel*);

    int  GetChanID(void) const;

    void CheckOptions(DTVMultiplex &t) const;
    void CheckFrequency(uint64_t frequency) const;
    bool CheckModulation(DTVModulation modulation) const;
    bool CheckCodeRate(DTVCodeRate rate) const;

    typedef DVBChannel* DVBChannelP;
    DVBChannel *GetMasterLock(void);
    static void ReturnMasterLock(DVBChannelP &dvbm);

    typedef const DVBChannel* DVBChannelCP;
    const DVBChannel *GetMasterLock(void) const;
    static void ReturnMasterLock(DVBChannelCP &dvbm);

  private:
    IsOpenMap         is_open;

    // Data
    DiSEqCDev         diseqc_dev;
    DiSEqCDevSettings diseqc_settings;
    DiSEqCDevTree    *diseqc_tree;
    DVBCam           *dvbcam; 

    // Device info
    QString           frontend_name;
    uint64_t          capabilities;
    uint64_t          ext_modulations;
    uint64_t          frequency_minimum;
    uint64_t          frequency_maximum;
    uint              symbol_rate_minimum;
    uint              symbol_rate_maximum;

    // Tuning State
    mutable QMutex    tune_lock;
    mutable QMutex    hw_lock;
    DTVMultiplex      desired_tuning;
    DTVMultiplex      prev_tuning;

    uint              last_lnb_dev_id;

    uint              tuning_delay;
    uint              sigmon_delay;
    bool              first_tune;  

    // Other State
    int               fd_frontend; 
    QString           device;      
    bool              has_crc_bug; 
};

#endif