Added IsUpdate() to the EPG handler interface

CONTRIBUTORS

@@ -2467,6 +2467,7 @@ Ulf Kiener <webmaster@ulf-kiener.de>
 Jörg Wendel <vdr-ml@jwendel.de>
  for reporting that cPlugin::Active() was called too often
  for adding HandledExternally() to the EPG handler interface
+ for adding IsUpdate() to the EPG handler interface
 
 Peter Pinnau <vdr@unterbrecher.de>
  for reporting that 'uint32_t' requires including stdint.h in font.h on some systems

HISTORY

@@ -7191,7 +7191,7 @@ Video Disk Recorder Revision History
   turn on adding the source character to channel names whenever they are displayed
   (suggested by Ludi Kaleni).
 
-2012-08-21: Version 1.7.30
+2012-08-25: Version 1.7.30
 
 - Fixed sorting recordings in the top level video directory.
 - Fixed handling control characters in SI data in case of UTF-8 encoded strings
@@ -7202,3 +7202,4 @@ Video Disk Recorder Revision History
   dot ('.') are now ignored and will be implicitly removed if the directory contains
   no other files. This fixes the leftover ".sort" files that were introduced in
   version 1.7.29.
+- Added IsUpdate() to the EPG handler interface (thanks to Jörg Wendel).

eit.c

@@ -8,7 +8,7 @@
  * Robert Schneider <Robert.Schneider@web.de> and Rolf Hakenes <hakenes@hippomi.de>.
  * Adapted to 'libsi' for VDR 1.3.0 by Marcel Wiesweg <marcel.wiesweg@gmx.de>.
  *
- * $Id: eit.c 2.20 2012/06/04 10:26:10 kls Exp $
+ * $Id: eit.c 2.21 2012/08/25 11:13:00 kls Exp $
  */
 
 #include "eit.h"
@@ -74,6 +74,8 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
       if (!pEvent || handledExternally) {
          if (OnlyRunningStatus)
             continue;
+         if (handledExternally && !EpgHandlers.IsUpdate(SiEitEvent.getEventId(), StartTime, Tid, getVersionNumber()))
+            continue;
          // If we don't have that event yet, we create a new one.
          // Otherwise we copy the information into the existing event anyway, because the data might have changed.
          pEvent = newEvent = new cEvent(SiEitEvent.getEventId());

epg.c

@@ -7,7 +7,7 @@
  * Original version (as used in VDR before 1.3.0) written by
  * Robert Schneider <Robert.Schneider@web.de> and Rolf Hakenes <hakenes@hippomi.de>.
  *
- * $Id: epg.c 2.17 2012/06/04 10:26:10 kls Exp $
+ * $Id: epg.c 2.18 2012/08/25 11:10:29 kls Exp $
  */
 
 #include "epg.h"
@@ -1340,6 +1340,15 @@ bool cEpgHandlers::HandledExternally(const cChannel *Channel)
   return false;
 }
 
+bool cEpgHandlers::IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->IsUpdate(EventID, StartTime, TableID, Version))
+         return true;
+      }
+  return false;
+}
+
 void cEpgHandlers::SetEventID(cEvent *Event, tEventID EventID)
 {
   for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {

epg.h

@@ -7,7 +7,7 @@
  * Original version (as used in VDR before 1.3.0) written by
  * Robert Schneider <Robert.Schneider@web.de> and Rolf Hakenes <hakenes@hippomi.de>.
  *
- * $Id: epg.h 2.13 2012/06/04 10:26:10 kls Exp $
+ * $Id: epg.h 2.14 2012/08/25 11:15:18 kls Exp $
  */
 
 #ifndef __EPG_H
@@ -250,6 +250,10 @@ public:
           ///< source. Incoming EIT data is processed as usual, but any new EPG event
           ///< will not be added to the respective schedule. It's up to the EPG
           ///< handler to take care of this.
+  virtual bool IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version) { return false; }
+          ///< VDR can't perform the update check (version, tid) for externally handled events,
+          ///< therefore the EPG handlers have to take care of this. Otherwise the parsing of
+          ///< non-updates will waste a lot of resources.
   virtual bool SetEventID(cEvent *Event, tEventID EventID) { return false; }
   virtual bool SetTitle(cEvent *Event, const char *Title) { return false; }
   virtual bool SetShortText(cEvent *Event, const char *ShortText) { return false; }
@@ -277,6 +281,7 @@ public:
   bool IgnoreChannel(const cChannel *Channel);
   bool HandleEitEvent(cSchedule *Schedule, const SI::EIT::Event *EitEvent, uchar TableID, uchar Version);
   bool HandledExternally(const cChannel *Channel);
+  bool IsUpdate(tEventID EventID, time_t StartTime, uchar TableID, uchar Version);
   void SetEventID(cEvent *Event, tEventID EventID);
   void SetTitle(cEvent *Event, const char *Title);
   void SetShortText(cEvent *Event, const char *ShortText);