1 files changed, 9 insertions, 1 deletions
diff --git a/sdt.h b/sdt.h
index 01653f45..128b51ad 100644
--- a/sdt.h
+++ b/sdt.h
@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: sdt.h 3.1 2014/03/10 14:40:54 kls Exp $
+ * $Id: sdt.h 4.1 2020/05/04 08:50:20 kls Exp $
  */
 
 #ifndef __SDT_H
@@ -15,16 +15,24 @@
 
 class cSdtFilter : public cFilter {
 private:
+  enum eTransponderState { tsUnknown, tsWrong, tsAccepted, tsVerified };
   cMutex mutex;
   cSectionSyncer sectionSyncer;
   int source;
+  int lastSource;
+  int lastTransponder;
+  int lastNid;
+  int lastTid;
   cPatFilter *patFilter;
+  enum eTransponderState transponderState;
 protected:
   virtual void Process(u_short Pid, u_char Tid, const u_char *Data, int Length);
 public:
   cSdtFilter(cPatFilter *PatFilter);
   virtual void SetStatus(bool On);
   void Trigger(int Source);
+  bool TransponderVerified(void) const { return transponderState == tsVerified; } // returns true if the expected NIT/TID have been received in the SDT
+  bool TransponderWrong(void) const { return transponderState == tsWrong; } // returns true if an expected change of NIT/TID has not happened
   };
 
 #endif //__SDT_H