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/*
* pat.h: PAT section filter
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: pat.h 5.1 2021/06/08 14:57:26 kls Exp $
*/
#ifndef __PAT_H
#define __PAT_H
#include <stdint.h>
#include "filter.h"
#include "thread.h"
class cPmtPidEntry;
class cPmtSidEntry;
class cPmtSidRequest;
class cPatFilter : public cFilter {
private:
cMutex mutex;
cTimeMs timer;
int patVersion;
cPmtPidEntry *activePmt;
cList<cPmtPidEntry> pmtPidList;
cList<cPmtSidEntry> pmtSidList;
cList<cPmtSidRequest> pmtSidRequestList;
int source;
int transponder;
cSectionSyncer sectionSyncer;
bool TransponderChanged(void);
bool PmtPidComplete(int PmtPid);
void PmtPidReset(int PmtPid);
bool PmtVersionChanged(int PmtPid, int Sid, int Version, bool SetNewVersion = false);
int NumSidRequests(int Sid);
void SwitchToNextPmtPid(void);
protected:
virtual void Process(u_short Pid, u_char Tid, const u_char *Data, int Length);
public:
cPatFilter(void);
void Trigger(int); // triggers reading the PMT PIDs that are currently not requested (dummy parameter for backwards compatibility, value is ignored)
void Request(int Sid); // requests permanent reading of the PMT PID for this SID
void Release(int Sid); // releases permanent reading of the PMT PID for this SID
};
void GetCaDescriptors(int Source, int Transponder, int ServiceId, const int *CaSystemIds, cDynamicBuffer &Buffer, int EsPid);
///< Gets all CA descriptors for a given channel.
///< Copies all available CA descriptors for the given Source, Transponder and ServiceId
///< into the provided buffer. Only those CA descriptors
///< are copied that match one of the given CA system IDs (or all of them, if CaSystemIds
///< is 0xFFFF).
int GetCaPids(int Source, int Transponder, int ServiceId, const int *CaSystemIds, int BufSize, int *Pids);
///< Gets all CA pids for a given channel.
///< Copies all available CA pids from the CA descriptors for the given Source, Transponder and ServiceId
///< into the provided buffer at Pids (at most BufSize - 1 entries, the list will be zero-terminated).
///< Only the CA pids of those CA descriptors are copied that match one of the given CA system IDs
///< (or all of them, if CaSystemIds is 0xFFFF).
///< Returns the number of pids copied into Pids (0 if no CA descriptors are
///< available), or -1 if BufSize was too small to hold all CA pids.
int GetPmtPid(int Source, int Transponder, int ServiceId);
///< Gets the Pid of the PMT in which the CA descriptors for this channel are defined.
#endif //__PAT_H
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