receiver.h

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/*
 * receiver.h: The basic receiver interface
 *
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
 * $Id: receiver.h 4.3 2017/05/01 08:48:34 kls Exp $
 */
 
#ifndef __RECEIVER_H
#define __RECEIVER_H
 
#include <atomic>
#include "device.h"
 
#define MAXRECEIVEPIDS  64 // the maximum number of PIDs per receiver
 
class cReceiver {
  friend class cDevice;
private:
  std::atomic<cDevice *> device; // cleared by cDevice::Detach() in any thread
  tChannelID channelID;
  int priority;
  // changed while attached (EMM/ECM PIDs), scanned by the device thread without a lock:
  std::atomic<int> pids[MAXRECEIVEPIDS];
  std::atomic<int> numPids;
  time_t lastScrambledPacket;
  time_t startScrambleDetection;
  int scramblingTimeout;
  time_t startEitInjection;
  time_t lastEitInjection;
  bool WantsPid(int Pid);
protected:
  cDevice *Device(void) { return device; }
  void Detach(void);
  virtual void Activate(bool On) {}
  virtual void Receive(const uchar *Data, int Length) = 0;
public:
  cReceiver(const cChannel *Channel = NULL, int Priority = MINPRIORITY);
  virtual ~cReceiver();
  int Priority(void) { return priority; }
  void SetPriority(int Priority);
  bool AddPid(int Pid);
  bool AddPids(const int *Pids);
  bool AddPids(int Pid1, int Pid2, int Pid3 = 0, int Pid4 = 0, int Pid5 = 0, int Pid6 = 0, int Pid7 = 0, int Pid8 = 0, int Pid9 = 0);
  bool SetPids(const cChannel *Channel);
  void DelPid(int Pid);
  void DelPids(const int *Pids);
  tChannelID ChannelID(void) { return channelID; }
  int NumPids(void) const { return numPids; }
  bool IsAttached(void) { return device != NULL; }
  };
 
#endif //__RECEIVER_H