Avoiding multiple EPG entries for the same event

HISTORY

@@ -845,3 +845,5 @@ Video Disk Recorder Revision History
 - Changed the tuning code to use FrontendInfo to detect the type of DVB card.
 - Removed the recursion stuff from cThread (cMutex already does this).
 - Fixed handling the repeat function in the channel display.
+- Avoiding multiple EPG entries for the same event (thanks to Rolf Hakenes
+  for some valuable information on how to do this).

eit.c

@@ -16,7 +16,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- * $Id: eit.c 1.28 2001/10/19 13:13:25 kls Exp $
+ * $Id: eit.c 1.29 2001/10/28 13:51:22 kls Exp $
  ***************************************************************************/
 
 #include "eit.h"
@@ -189,6 +189,7 @@ cEventInfo::cEventInfo(unsigned short serviceid, unsigned short eventid)
    bIsPresent = bIsFollowing = false;
    lDuration = 0;
    tTime = 0;
+   uTableID = 0;
    uEventID = eventid;
    uServiceID = serviceid;
    nChannelNumber = 0;
@@ -231,6 +232,12 @@ bool cEventInfo::IsFollowing() const
 {
    return bIsFollowing;
 }
+
+void cEventInfo::SetTableID(unsigned char tableid)
+{
+   uTableID = tableid;
+}
+
 /**  */
 void cEventInfo::SetFollowing(bool foll)
 {
@@ -246,6 +253,12 @@ const char * cEventInfo::GetDate() const
 
    return szDate;
 }
+
+const unsigned char cEventInfo::GetTableID(void) const
+{
+   return uTableID;
+}
+
 /**  */
 const char * cEventInfo::GetTimeString() const
 {
@@ -545,21 +558,26 @@ unsigned short cSchedule::GetServiceID() const
    return uServiceID;
 }
 /**  */
-const cEventInfo * cSchedule::GetEvent(unsigned short uEventID) const
+const cEventInfo * cSchedule::GetEvent(unsigned short uEventID, time_t tTime) const
 {
+   // Returns either the event info with the given uEventID or, if that one can't
+   // be found, the one with the given tTime (or NULL if neither can be found)
    cEventInfo *pe = Events.First();
+   cEventInfo *pt = NULL;
    while (pe != NULL)
    {
       if (pe->GetEventID() == uEventID)
          return pe;
+      if (tTime > 0 && pe->GetTime() == tTime) // 'tTime < 0' is apparently used with NVOD channels
+         pt = pe;
 
       pe = Events.Next(pe);
    }
 
-   return NULL;
+   return pt;
 }
 /**  */
-const cEventInfo * cSchedule::GetEvent(time_t tTime) const
+const cEventInfo * cSchedule::GetEventAround(time_t tTime) const
 {
    cEventInfo *pe = Events.First();
    while (pe != NULL)
@@ -759,7 +777,7 @@ int cEIT::ProcessEIT(unsigned char *buffer)
              if (!rEvent)
                 break;
              }
-          pEvent = (cEventInfo *)pSchedule->GetEvent((unsigned short)VdrProgramInfo->EventID);
+          pEvent = (cEventInfo *)pSchedule->GetEvent((unsigned short)VdrProgramInfo->EventID, VdrProgramInfo->StartTime);
           if (!pEvent) {
              // If we don't have that event ID yet, we create a new one.
              // Otherwise we copy the information into the existing event anyway, because the data might have changed.
@@ -767,6 +785,14 @@ int cEIT::ProcessEIT(unsigned char *buffer)
              pEvent = (cEventInfo *)pSchedule->GetEvent((unsigned short)VdrProgramInfo->EventID);
              if (!pEvent)
                 break;
+             pEvent->SetTableID(tid);
+             }
+          else {
+             // We have found an existing event, either through its event ID or its start time.
+             // If the new event comes from a table that belongs to an "other TS" and the existing
+             // one comes from a "actual TS" table, lets skip it.
+             if ((tid == 0x4F || tid == 0x60) && (pEvent->GetTableID() == 0x4E || pEvent->GetTableID() == 0x50))
+                continue;
              }
           if (rEvent) {
              pEvent->SetTitle(rEvent->GetTitle());
@@ -774,6 +800,7 @@ int cEIT::ProcessEIT(unsigned char *buffer)
              pEvent->SetExtendedDescription(rEvent->GetExtendedDescription());
              }
           else {
+             pEvent->SetTableID(tid);
              pEvent->SetTitle(VdrProgramInfo->ShortName);
              pEvent->SetSubtitle(VdrProgramInfo->ShortText);
              pEvent->SetExtendedDescription(VdrProgramInfo->ExtendedName);

eit.h

@@ -16,7 +16,7 @@
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
- * $Id: eit.h 1.11 2001/09/22 11:43:21 kls Exp $
+ * $Id: eit.h 1.12 2001/10/28 12:33:10 kls Exp $
  ***************************************************************************/
 
 #ifndef __EIT_H
@@ -29,6 +29,7 @@ class cEventInfo : public cListObject {
   friend class cSchedule;
   friend class cEIT;
 private:
+  unsigned char uTableID;           // Table ID this event came from
   unsigned short uServiceID;        // Service ID of program for that event
   bool bIsFollowing;                // true if this is the next event on this channel
   bool bIsPresent;                  // true if this is the present event running
@@ -40,6 +41,7 @@ private:
   time_t tTime;                     // Start time
   int nChannelNumber;               // the actual channel number from VDR's channel list (used in cMenuSchedule for sorting by channel number)
 protected:
+  void SetTableID(unsigned char tableid);
   void SetFollowing(bool foll);
   void SetPresent(bool pres);
   void SetTitle(const char *string);
@@ -52,6 +54,7 @@ protected:
   cEventInfo(unsigned short serviceid, unsigned short eventid);
 public:
   ~cEventInfo();
+  const unsigned char GetTableID(void) const;
   const char *GetTimeString(void) const;
   const char *GetEndTimeString(void) const;
   const char *GetDate(void) const;
@@ -90,8 +93,8 @@ public:
   const cEventInfo *GetPresentEvent(void) const;
   const cEventInfo *GetFollowingEvent(void) const;
   unsigned short GetServiceID(void) const;
-  const cEventInfo *GetEvent(unsigned short uEventID) const;
+  const cEventInfo *GetEvent(unsigned short uEventID, time_t tTime = 0) const;
-  const cEventInfo *GetEvent(time_t tTime) const;
+  const cEventInfo *GetEventAround(time_t tTime) const;
   const cEventInfo *GetEventNumber(int n) const { return Events.Get(n); }
   int NumEvents(void) const { return Events.Count(); }
   void Dump(FILE *f, const char *Prefix = "") const;

menu.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.c 1.135 2001/10/28 10:04:50 kls Exp $
+ * $Id: menu.c 1.136 2001/10/28 12:00:16 kls Exp $
  */
 
 #include "menu.h"
@@ -2170,7 +2170,7 @@ bool cRecordControl::GetEventInfo(void)
         if (Schedules) {
            const cSchedule *Schedule = Schedules->GetSchedule(channel->pnr);
            if (Schedule) {
-              eventInfo = Schedule->GetEvent(Time);
+              eventInfo = Schedule->GetEventAround(Time);
               if (eventInfo) {
                  if (seconds > 0)
                     dsyslog(LOG_INFO, "got EPG info after %d seconds", seconds);