satipstreamhandler.h

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// -*- Mode: c++ -*-
 
#ifndef SATIPSTREAMHANDLER_H
#define SATIPSTREAMHANDLER_H
 
// Qt headers
#include <QString>
#include <QStringList>
#if QT_VERSION < QT_VERSION_CHECK(5,14,0)
#include <QMutex>
#else
#include <QRecursiveMutex>
#endif
#include <QMap>
 
// MythTV headers
#include "dtvconfparserhelpers.h"
#include "dtvmultiplex.h"
#include "mpeg/mpegstreamdata.h"
#include "satiprtsp.h"
#include "streamhandler.h"
 
class SatIPDataReadHelper;
class SatIPControlReadHelper;
 
class SatIPStreamHandler : public StreamHandler
{
    friend class SatIPDataReadHelper;
 
  public:
    static SatIPStreamHandler *Get(const QString &devname, int inputid);
    static void Return(SatIPStreamHandler * & ref, int inputid);
 
    void AddListener(MPEGStreamData *data,
                     bool /*allow_section_reader*/ = false,
                     bool /*needs_drb*/            = false,
                     const QString& output_file    = QString()) override // StreamHandler
    {
        StreamHandler::AddListener(data, false, false, output_file);
    } // StreamHandler
 
    bool UpdateFilters() override;  // StreamHandler
    bool Tune(const DTVMultiplex &tuning);
 
  private:
    explicit SatIPStreamHandler(const QString & device, int inputid);
 
    bool Open(void);
    void Close(void);
 
    void run(void) override; // MThread
 
    // For implementing Get & Return
    static QMap<QString, SatIPStreamHandler*> s_handlers;
    static QMap<QString, uint>                s_handlersRefCnt;
    static QMutex                             s_handlersLock;
 
  public:
    int          m_inputId        {0};
    int          m_satipsrc       {1};
 
  private:
    DTVTunerType m_tunerType;
    QString      m_device;
    uint         m_frontend       {UINT_MAX};
    QUrl         m_baseurl;
    QUrl         m_tuningurl;
    QUrl         m_oldtuningurl;
    bool         m_setupinvoked   {false};
#if QT_VERSION < QT_VERSION_CHECK(5,14,0)
    QMutex       m_tunelock       {QMutex::Recursive};
#else
    QRecursiveMutex m_tunelock;
#endif
    QStringList  m_oldpids;
 
  public:
    QUdpSocket  *m_dsocket        {nullptr};    // RTP data socket
    QUdpSocket  *m_csocket        {nullptr};    // RTCP control socket
    ushort       m_dport          {0};          // RTP data port          Note: this is m_dsocket->localPort()
    ushort       m_cport          {0};          // RTCP control port      Note: this is m_csocket->localPort()
 
  public:
    SatIPRTSP               *m_rtsp               {nullptr};
    SatIPDataReadHelper     *m_dataReadHelper     {nullptr};
    SatIPControlReadHelper  *m_controlReadHelper  {nullptr};
 
  public:
    bool HasLock();
    int  GetSignalStrength();
    void SetSigmonValues(bool lock, int level);
 
  private:
    QMutex m_sigmonLock;
    bool m_hasLock          {false};
    int  m_signalStrength   {0};
 
  public:
    static uint  GetUDPReceiveBufferSize(QUdpSocket *socket);
    static uint  SetUDPReceiveBufferSize(QUdpSocket *socket, uint rcvbuffersize);
};
 
// --- SatIPDataReadHelper ---------------------------------------------------
 
class SatIPDataReadHelper : public QObject
{
    Q_OBJECT
 
  public:
    explicit SatIPDataReadHelper(SatIPStreamHandler *handler);
    ~SatIPDataReadHelper() override;
 
  public slots:
    void ReadPending(void);
 
  private:
    SatIPStreamHandler *m_streamHandler   {nullptr};
    QUdpSocket         *m_socket          {nullptr};
    int                 m_timer           {0};
    uint                m_sequenceNumber  {0};
    uint                m_count           {0};
    bool                m_valid           {false};
};
 
// --- SatIPControlReadHelper ------------------------------------------------
 
class SatIPControlReadHelper : public QObject
{
    Q_OBJECT
 
  public:
    explicit SatIPControlReadHelper(SatIPStreamHandler *handler);
    ~SatIPControlReadHelper() override = default;
 
  public slots:
    void ReadPending(void);
 
  private:
    SatIPStreamHandler *m_streamHandler   {nullptr};
    QUdpSocket         *m_socket          {nullptr};
};
 
#endif // SATIPSTREAMHANDLER_H