Added a new plugin interface for implementing EPG handlers

HISTORY

@@ -6960,7 +6960,7 @@ Video Disk Recorder Revision History
   which was made in version 1.1.10, so please report if this has any unwanted
   side effects.
 
-2012-03-08: Version 1.7.26
+2012-03-10: Version 1.7.26
 
 - Now checking for NULL in cOsd::AddPixmap() (suggested by Christoph Haubrich).
 - Fixed the German translation of "VDR will shut down in %s minutes" (thanks to
@@ -6999,3 +6999,13 @@ Video Disk Recorder Revision History
   is selected, but it works at any time (and is more obvious).
 - Revoked "If the first event in a schedule has a table id of 0x00, any incoming EIT data for
   that schedule from the DVB stream will be completely ignored".
+- Added a new plugin interface for implementing EPG handlers.
+  + A plugin can implement an EPG handler by creating an object derived from
+    cEpgHandler and implementing the necessary member functions.
+  + The special handling of events with table id 0x00 has been dropped.
+    For backwards compatibility EPG events with table ids lower than 0x4E will
+    be treated as if they had a table id of 0x4E, and the new plugin 'epgtableid0'
+    can be used to have them handled like in previous versions.
+  + The default table id for a newly created cEvent has been changed to 0xFF,
+    which is higher than any normal table id that is broadcast in the EIT data.
+  See PLUGINS.html, section "Electronic Program Guide" for more information.

PLUGINS.html

@@ -102,6 +102,7 @@ structures and allows it to hook itself into specific areas to perform special a
 <li><a href="#Audio">Audio</a>
 <li><a href="#Remote Control">Remote Control</a>
 <li><a href="#Conditional Access">Conditional Access</a>
+<li><modified><a href="#Electronic Program Guide">Electronic Program Guide</modified></a>
 </ul>
 </ul>
 
@@ -2212,5 +2213,37 @@ virtual bool Assign(cDevice *Device, bool Query = false);
 
 See the description of this function in <tt>ci.h</tt> for details.
 
+<div class="modified">
+<hr><h2><a name="Electronic Program Guide">Electronic Program Guide</a></h2>
+
+<div class="blurb">The grass is always greener on the other side...</div><p>
+
+In case the <i>Electronic Program Guide (EPG)</i> provided by the broadcaster
+isn't sufficient for your taste, you can implement a <tt>cEpgHandler</tt> to
+improve it from external sources. For instance, to replace the description
+of the broadcaster's EPG with one from some external database, you could do:
+
+<p><table><tr><td class="code"><pre>
+#include &lt;vdr/epg.h&gt;
+
+class cMyEpgHandler : public cEpgHandler {
+public:
+  virtual bool SetDescription(cEvent *Event, const char *Description);
+  };
+
+bool cMyEpgHandler::SetDescription(cEvent *Event, const char *Description)
+{
+  Event-&gt;SetDescription(DescriptionFromDatabase(Event));
+  return true;
+}
+</pre></td></tr></table><p>
+
+where <tt>DescriptionFromDatabase()</tt> would derive the description of the
+ given event from some external source. Note that the function returns <tt>true</tt>
+to signal VDR that no other EPG handlers shall be queried after this one.
+<p>
+See <tt>VDR/epg.h</tt> for details.
+</div modified>
+
 </body>
 </html>

PLUGINS/src/epgtableid0/COPYING

@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
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PLUGINS/src/epgtableid0/HISTORY

@@ -0,0 +1,6 @@
+VDR Plugin 'epgtableid0' Revision History
+-----------------------------------------
+
+2012-03-10: Version 0.0.1
+
+- Initial revision.

PLUGINS/src/epgtableid0/Makefile

@@ -0,0 +1,114 @@
+#
+# Makefile for a Video Disk Recorder plugin
+#
+# $Id: Makefile 1.1 2012/03/10 14:23:58 kls Exp $
+
+# The official name of this plugin.
+# This name will be used in the '-P...' option of VDR to load the plugin.
+# By default the main source file also carries this name.
+# IMPORTANT: the presence of this macro is important for the Make.config
+# file. So it must be defined, even if it is not used here!
+#
+PLUGIN = epgtableid0
+
+### The version number of this plugin (taken from the main source file):
+
+VERSION = $(shell grep 'static const char \*VERSION *=' $(PLUGIN).c | awk '{ print $$6 }' | sed -e 's/[";]//g')
+
+### The C++ compiler and options:
+
+CXX      ?= g++
+CXXFLAGS ?= -g -O3 -Wall -Woverloaded-virtual -Wno-parentheses
+
+### The directory environment:
+
+VDRDIR ?= ../../..
+LIBDIR ?= ../../lib
+TMPDIR ?= /tmp
+
+### Make sure that necessary options are included:
+
+include $(VDRDIR)/Make.global
+
+### Allow user defined options to overwrite defaults:
+
+-include $(VDRDIR)/Make.config
+
+### The version number of VDR's plugin API (taken from VDR's "config.h"):
+
+APIVERSION = $(shell sed -ne '/define APIVERSION/s/^.*"\(.*\)".*$$/\1/p' $(VDRDIR)/config.h)
+
+### The name of the distribution archive:
+
+ARCHIVE = $(PLUGIN)-$(VERSION)
+PACKAGE = vdr-$(ARCHIVE)
+
+### Includes and Defines (add further entries here):
+
+INCLUDES += -I$(VDRDIR)/include
+
+DEFINES += -D_GNU_SOURCE -DPLUGIN_NAME_I18N='"$(PLUGIN)"'
+
+### The object files (add further files here):
+
+OBJS = $(PLUGIN).o
+
+### The main target:
+
+all: libvdr-$(PLUGIN).so i18n
+
+### Implicit rules:
+
+%.o: %.c
+	$(CXX) $(CXXFLAGS) -c $(DEFINES) $(INCLUDES) $<
+
+### Dependencies:
+
+MAKEDEP = $(CXX) -MM -MG
+DEPFILE = .dependencies
+$(DEPFILE): Makefile
+	@$(MAKEDEP) $(DEFINES) $(INCLUDES) $(OBJS:%.o=%.c) > $@
+
+-include $(DEPFILE)
+
+### Internationalization (I18N):
+
+PODIR     = po
+LOCALEDIR = $(VDRDIR)/locale
+I18Npo    = $(wildcard $(PODIR)/*.po)
+I18Nmsgs  = $(addprefix $(LOCALEDIR)/, $(addsuffix /LC_MESSAGES/vdr-$(PLUGIN).mo, $(notdir $(foreach file, $(I18Npo), $(basename $(file))))))
+I18Npot   = $(PODIR)/$(PLUGIN).pot
+
+%.mo: %.po
+	msgfmt -c -o $@ $<
+
+$(I18Npot): $(wildcard *.c)
+	xgettext -C -cTRANSLATORS --no-wrap --no-location -k -ktr -ktrNOOP --package-name=vdr-$(PLUGIN) --package-version=$(VERSION) --msgid-bugs-address='<see README>' -o $@ $^
+
+%.po: $(I18Npot)
+	msgmerge -U --no-wrap --no-location --backup=none -q $@ $<
+	@touch $@
+
+$(I18Nmsgs): $(LOCALEDIR)/%/LC_MESSAGES/vdr-$(PLUGIN).mo: $(PODIR)/%.mo
+	@mkdir -p $(dir $@)
+	cp $< $@
+
+.PHONY: i18n
+i18n: $(I18Nmsgs) $(I18Npot)
+
+### Targets:
+
+libvdr-$(PLUGIN).so: $(OBJS)
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -shared $(OBJS) -o $@
+	@cp --remove-destination $@ $(LIBDIR)/$@.$(APIVERSION)
+
+dist: $(I18Npo) clean
+	@-rm -rf $(TMPDIR)/$(ARCHIVE)
+	@mkdir $(TMPDIR)/$(ARCHIVE)
+	@cp -a * $(TMPDIR)/$(ARCHIVE)
+	@tar czf $(PACKAGE).tgz -C $(TMPDIR) $(ARCHIVE)
+	@-rm -rf $(TMPDIR)/$(ARCHIVE)
+	@echo Distribution package created as $(PACKAGE).tgz
+
+clean:
+	@-rm -f $(OBJS) $(DEPFILE) *.so *.tgz core* *~ $(PODIR)/*.mo $(PODIR)/*.pot

PLUGINS/src/epgtableid0/README

@@ -0,0 +1,19 @@
+This is a "plugin" for the Video Disk Recorder (VDR).
+
+Written by:                  Klaus Schmidinger <kls@tvdr.de>
+
+Project's homepage:          http://www.tvdr.de
+
+Latest version available at: http://www.tvdr.de
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+See the file COPYING for more information.
+
+Description:
+
+The special handling of EPG events with table id 0x00 has been dropped
+in VDR version 1.7.26, and replaced by a more felxible "EPG Handler"
+concept. You can use this plugin to get the previous functionality back.

PLUGINS/src/epgtableid0/epgtableid0.c

@@ -0,0 +1,98 @@
+/*
+ * epgtableid0.c: A plugin for the Video Disk Recorder
+ *
+ * See the README file for copyright information and how to reach the author.
+ *
+ * $Id: epgtableid0.c 1.1 2012/03/10 15:10:43 kls Exp $
+ */
+
+#include <vdr/epg.h>
+#include <vdr/plugin.h>
+
+static const char *VERSION        = "0.0.1";
+static const char *DESCRIPTION    = "EPG handler for events with table id 0x00";
+
+// --- cTable0Handler --------------------------------------------------------
+
+class cTable0Handler : public cEpgHandler {
+private:
+  bool Ignore(cEvent *Event) { return Event->TableID() == 0x00; }
+public:
+  virtual bool SetEventID(cEvent *Event, tEventID EventID);
+  virtual bool SetStartTime(cEvent *Event, time_t StartTime);
+  virtual bool SetDuration(cEvent *Event, int Duration);
+  virtual bool SetTitle(cEvent *Event, const char *Title);
+  virtual bool SetShortText(cEvent *Event, const char *ShortText);
+  virtual bool SetDescription(cEvent *Event, const char *Description);
+  virtual bool SetContents(cEvent *Event, uchar *Contents);
+  virtual bool SetParentalRating(cEvent *Event, int ParentalRating);
+  virtual bool SetVps(cEvent *Event, time_t Vps);
+  virtual bool FixEpgBugs(cEvent *Event);
+  };
+
+bool cTable0Handler::SetEventID(cEvent *Event, tEventID EventID)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetStartTime(cEvent *Event, time_t StartTime)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetDuration(cEvent *Event, int Duration)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetTitle(cEvent *Event, const char *Title)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetShortText(cEvent *Event, const char *ShortText)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetDescription(cEvent *Event, const char *Description)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetContents(cEvent *Event, uchar *Contents)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetParentalRating(cEvent *Event, int ParentalRating)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::SetVps(cEvent *Event, time_t Vps)
+{
+  return Ignore(Event);
+}
+
+bool cTable0Handler::FixEpgBugs(cEvent *Event)
+{
+  return Ignore(Event);
+}
+
+// --- cPluginEpgtableid0 ----------------------------------------------------
+
+class cPluginEpgtableid0 : public cPlugin {
+public:
+  virtual const char *Version(void) { return VERSION; }
+  virtual const char *Description(void) { return DESCRIPTION; }
+  virtual bool Initialize(void);
+  };
+
+bool cPluginEpgtableid0::Initialize(void)
+{
+  new cTable0Handler;
+  return true;
+}
+
+VDRPLUGINCREATOR(cPluginEpgtableid0); // Don't touch this!

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 2.14 2012/03/08 15:05:45 kls Exp $
+ * $Id: eit.c 2.15 2012/03/10 14:43:52 kls Exp $
  */
 
 #include "eit.h"
@@ -36,12 +36,13 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
   cChannel *channel = Channels.GetByChannelID(channelID, true);
   if (!channel)
      return; // only collect data for known channels
+  if (EpgHandlers.IgnoreChannel(channel))
+     return;
 
   cSchedule *pSchedule = (cSchedule *)Schedules->GetSchedule(channel, true);
 
   bool Empty = true;
   bool Modified = false;
-  bool HasExternalData = false;
   time_t SegmentStart = 0;
   time_t SegmentEnd = 0;
   time_t Now = time(NULL);
@@ -53,7 +54,8 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
 
   SI::EIT::Event SiEitEvent;
   for (SI::Loop::Iterator it; eventLoop.getNext(SiEitEvent, it); ) {
-      bool ExternalData = false;
+      if (EpgHandlers.HandleEitEvent(pSchedule, &SiEitEvent, Tid, getVersionNumber()))
+         continue; // an EPG handler has done all of the processing
       time_t StartTime = SiEitEvent.getStartTime();
       int Duration = SiEitEvent.getDuration();
       // Drop bogus events - but keep NVOD reference events, where all bits of the start time field are set to 1, resulting in a negative number.
@@ -72,23 +74,17 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
          // 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());
-         if (!pEvent)
+         newEvent->SetStartTime(StartTime);
-            continue;
+         newEvent->SetDuration(Duration);
+         pSchedule->AddEvent(newEvent);
          }
       else {
          // We have found an existing event, either through its event ID or its start time.
          pEvent->SetSeen();
-         // If the existing event has a zero table ID it was defined externally and shall
+         uchar TableID = max(pEvent->TableID(), uchar(0x4E)); // for backwards compatibility, table ids less than 0x4E are treated as if they were "present"
-         // not be overwritten.
-         uchar TableID = pEvent->TableID();
-         if (TableID == 0x00) {
-            if (pEvent->Version() == getVersionNumber())
-               continue;
-            HasExternalData = ExternalData = true;
-            }
          // If the new event has a higher table ID, let's skip it.
          // The lower the table ID, the more "current" the information.
-         else if (Tid > TableID)
+         if (Tid > TableID)
             continue;
          // If the new event comes from the same table and has the same version number
          // as the existing one, let's skip it to avoid unnecessary work.
@@ -98,21 +94,20 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
          // to the Sat.1/Pro7 transponder, events will keep toggling because of the bogus version numbers.
          else if (Tid == TableID && pEvent->Version() == getVersionNumber())
             continue;
+         EpgHandlers.SetEventID(pEvent, SiEitEvent.getEventId()); // unfortunately some stations use different event ids for the same event in different tables :-(
+         EpgHandlers.SetStartTime(pEvent, StartTime);
+         EpgHandlers.SetDuration(pEvent, Duration);
          }
-      if (!ExternalData) {
+      if (pEvent->TableID() > 0x4E) // for backwards compatibility, table ids less than 0x4E are never overwritten
-         pEvent->SetEventID(SiEitEvent.getEventId()); // unfortunately some stations use different event ids for the same event in different tables :-(
          pEvent->SetTableID(Tid);
-         pEvent->SetStartTime(StartTime);
-         pEvent->SetDuration(Duration);
-         }
-      if (newEvent)
-         pSchedule->AddEvent(newEvent);
       if (Tid == 0x4E) { // we trust only the present/following info on the actual TS
          if (SiEitEvent.getRunningStatus() >= SI::RunningStatusNotRunning)
             pSchedule->SetRunningStatus(pEvent, SiEitEvent.getRunningStatus(), channel);
          }
-      if (OnlyRunningStatus)
+      if (OnlyRunningStatus) {
+         pEvent->SetVersion(0xFF); // we have already changed the table id above, so set the version to an invalid value to make sure the next full run will be executed
          continue; // do this before setting the version, so that the full update can be done later
+         }
       pEvent->SetVersion(getVersionNumber());
 
       int LanguagePreferenceShort = -1;
@@ -124,10 +119,6 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
       cLinkChannels *LinkChannels = NULL;
       cComponents *Components = NULL;
       for (SI::Loop::Iterator it2; (d = SiEitEvent.eventDescriptors.getNext(it2)); ) {
-          if (ExternalData && d->getDescriptorTag() != SI::ComponentDescriptorTag) {
-             delete d;
-             continue;
-             }
           switch (d->getDescriptorTag()) {
             case SI::ExtendedEventDescriptorTag: {
                  SI::ExtendedEventDescriptor *eed = (SI::ExtendedEventDescriptor *)d;
@@ -164,7 +155,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
                         NumContents++;
                         }
                      }
-                 pEvent->SetContents(Contents);
+                 EpgHandlers.SetContents(pEvent, Contents);
                  }
                  break;
             case SI::ParentalRatingDescriptorTag: {
@@ -183,7 +174,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
                           case 0x13:          ParentalRating = 16; break;
                           default:            ParentalRating = 0;
                           }
-                        pEvent->SetParentalRating(ParentalRating);
+                        EpgHandlers.SetParentalRating(pEvent, ParentalRating);
                         }
                      }
                  }
@@ -202,7 +193,7 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
                  else if (month == 0 && t.tm_mon == 11) // current month is jan, but event is in dec
                     t.tm_year--;
                  time_t vps = mktime(&t);
-                 pEvent->SetVps(vps);
+                 EpgHandlers.SetVps(pEvent, vps);
                  }
                  break;
             case SI::TimeShiftedEventDescriptorTag: {
@@ -213,9 +204,9 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
                  rEvent = (cEvent *)rSchedule->GetEvent(tsed->getReferenceEventId());
                  if (!rEvent)
                     break;
-                 pEvent->SetTitle(rEvent->Title());
+                 EpgHandlers.SetTitle(pEvent, rEvent->Title());
-                 pEvent->SetShortText(rEvent->ShortText());
+                 EpgHandlers.SetShortText(pEvent, rEvent->ShortText());
-                 pEvent->SetDescription(rEvent->Description());
+                 EpgHandlers.SetDescription(pEvent, rEvent->Description());
                  }
                  break;
             case SI::LinkageDescriptorTag: {
@@ -273,30 +264,30 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
       if (!rEvent) {
          if (ShortEventDescriptor) {
             char buffer[Utf8BufSize(256)];
-            pEvent->SetTitle(ShortEventDescriptor->name.getText(buffer, sizeof(buffer)));
+            EpgHandlers.SetTitle(pEvent, ShortEventDescriptor->name.getText(buffer, sizeof(buffer)));
-            pEvent->SetShortText(ShortEventDescriptor->text.getText(buffer, sizeof(buffer)));
+            EpgHandlers.SetShortText(pEvent, ShortEventDescriptor->text.getText(buffer, sizeof(buffer)));
             }
-         else if (!HasExternalData) {
+         else {
-            pEvent->SetTitle(NULL);
+            EpgHandlers.SetTitle(pEvent, NULL);
-            pEvent->SetShortText(NULL);
+            EpgHandlers.SetShortText(pEvent, NULL);
             }
          if (ExtendedEventDescriptors) {
             char buffer[Utf8BufSize(ExtendedEventDescriptors->getMaximumTextLength(": ")) + 1];
-            pEvent->SetDescription(ExtendedEventDescriptors->getText(buffer, sizeof(buffer), ": "));
+            EpgHandlers.SetDescription(pEvent, ExtendedEventDescriptors->getText(buffer, sizeof(buffer), ": "));
             }
-         else if (!HasExternalData)
+         else
-            pEvent->SetDescription(NULL);
+            EpgHandlers.SetDescription(pEvent, NULL);
          }
       delete ExtendedEventDescriptors;
       delete ShortEventDescriptor;
 
       pEvent->SetComponents(Components);
 
-      if (!HasExternalData)
+      EpgHandlers.FixEpgBugs(pEvent);
-         pEvent->FixEpgBugs();
       if (LinkChannels)
          channel->SetLinkChannels(LinkChannels);
       Modified = true;
+      EpgHandlers.HandleEvent(pEvent);
       }
   if (Tid == 0x4E) {
      if (Empty && getSectionNumber() == 0)
@@ -307,9 +298,8 @@ cEIT::cEIT(cSchedules *Schedules, int Source, u_char Tid, const u_char *Data, bo
   if (OnlyRunningStatus)
      return;
   if (Modified) {
-     pSchedule->Sort();
+     EpgHandlers.SortSchedule(pSchedule);
-     if (!HasExternalData)
+     EpgHandlers.DropOutdated(pSchedule, SegmentStart, SegmentEnd, Tid, getVersionNumber());
-        pSchedule->DropOutdated(SegmentStart, SegmentEnd, Tid, getVersionNumber());
      Schedules->SetModified(pSchedule);
      }
 }

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 2.11 2012/02/13 14:58:19 kls Exp $
+ * $Id: epg.c 2.12 2012/03/10 13:14:27 kls Exp $
  */
 
 #include "epg.h"
@@ -114,7 +114,7 @@ cEvent::cEvent(tEventID EventID)
 {
   schedule = NULL;
   eventID = EventID;
-  tableID = 0;
+  tableID = 0xFF; // actual table ids are 0x4E..0x60
   version = 0xFF; // actual version numbers are 0..31
   runningStatus = SI::RunningStatusUndefined;
   title = NULL;
@@ -1296,3 +1296,153 @@ void cEpgDataReader::Action(void)
 {
   cSchedules::Read();
 }
+
+// --- cEpgHandler -----------------------------------------------------------
+
+cEpgHandler::cEpgHandler(void)
+{
+  EpgHandlers.Add(this);
+}
+
+cEpgHandler::~cEpgHandler()
+{
+  EpgHandlers.Del(this, false);
+}
+
+// --- cEpgHandlers ----------------------------------------------------------
+
+cEpgHandlers EpgHandlers;
+
+bool cEpgHandlers::IgnoreChannel(const cChannel *Channel)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->IgnoreChannel(Channel))
+         return true;
+      }
+  return false;
+}
+
+bool cEpgHandlers::HandleEitEvent(cSchedule *Schedule, const SI::EIT::Event *EitEvent, uchar TableID, uchar Version)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->HandleEitEvent(Schedule, EitEvent, TableID, Version))
+         return true;
+      }
+  return false;
+}
+
+void cEpgHandlers::SetEventID(cEvent *Event, tEventID EventID)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetEventID(Event, EventID))
+         return;
+      }
+  Event->SetEventID(EventID);
+}
+
+void cEpgHandlers::SetTitle(cEvent *Event, const char *Title)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetTitle(Event, Title))
+         return;
+      }
+  Event->SetTitle(Title);
+}
+
+void cEpgHandlers::SetShortText(cEvent *Event, const char *ShortText)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetShortText(Event, ShortText))
+         return;
+      }
+  Event->SetShortText(ShortText);
+}
+
+void cEpgHandlers::SetDescription(cEvent *Event, const char *Description)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetDescription(Event, Description))
+         return;
+      }
+  Event->SetDescription(Description);
+}
+
+void cEpgHandlers::SetContents(cEvent *Event, uchar *Contents)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetContents(Event, Contents))
+         return;
+      }
+  Event->SetContents(Contents);
+}
+
+void cEpgHandlers::SetParentalRating(cEvent *Event, int ParentalRating)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetParentalRating(Event, ParentalRating))
+         return;
+      }
+  Event->SetParentalRating(ParentalRating);
+}
+
+void cEpgHandlers::SetStartTime(cEvent *Event, time_t StartTime)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetStartTime(Event, StartTime))
+         return;
+      }
+  Event->SetStartTime(StartTime);
+}
+
+void cEpgHandlers::SetDuration(cEvent *Event, int Duration)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetDuration(Event, Duration))
+         return;
+      }
+  Event->SetDuration(Duration);
+}
+
+void cEpgHandlers::SetVps(cEvent *Event, time_t Vps)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SetVps(Event, Vps))
+         return;
+      }
+  Event->SetVps(Vps);
+}
+
+void cEpgHandlers::FixEpgBugs(cEvent *Event)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->FixEpgBugs(Event))
+         return;
+      }
+  Event->FixEpgBugs();
+}
+
+void cEpgHandlers::HandleEvent(cEvent *Event)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->HandleEvent(Event))
+         break;
+      }
+}
+
+void cEpgHandlers::SortSchedule(cSchedule *Schedule)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->SortSchedule(Schedule))
+         return;
+      }
+  Schedule->Sort();
+}
+
+void cEpgHandlers::DropOutdated(cSchedule *Schedule, time_t SegmentStart, time_t SegmentEnd, uchar TableID, uchar Version)
+{
+  for (cEpgHandler *eh = First(); eh; eh = Next(eh)) {
+      if (eh->DropOutdated(Schedule, SegmentStart, SegmentEnd, TableID, Version))
+         return;
+      }
+  Schedule->DropOutdated(SegmentStart, SegmentEnd, TableID, Version);
+}

epg.h

@@ -7,13 +7,14 @@
  * 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 2.7 2012/02/26 13:58:26 kls Exp $
+ * $Id: epg.h 2.8 2012/03/10 13:50:10 kls Exp $
  */
 
 #ifndef __EPG_H
 #define __EPG_H
 
 #include "channels.h"
+#include "libsi/section.h"
 #include "thread.h"
 #include "tools.h"
 
@@ -221,4 +222,68 @@ public:
 
 void ReportEpgBugFixStats(bool Reset = false);
 
+class cEpgHandler : public cListObject {
+public:
+  cEpgHandler(void);
+          ///< Constructs a new EPG handler and adds it to the list of EPG handlers.
+          ///< Whenever an event is received from the EIT data stream, the EPG
+          ///< handlers are queried in the order they have been created.
+          ///< As soon as one of the EPG handlers returns true in a member function,
+          ///< none of the remaining handlers will be queried. If none of the EPG
+          ///< handlers returns true in a particular call, the default processing
+          ///< will take place.
+          ///< EPG handlers will be deleted automatically at the end of the program.
+  virtual ~cEpgHandler();
+  virtual bool IgnoreChannel(const cChannel *Channel) { return false; }
+          ///< Before any EIT data for the given Channel is processed, the EPG handlers
+          ///< are asked whether this Channel shall be completely ignored. If any of
+          ///< the EPG handlers returns true in this function, no EIT data at all will
+          ///< be processed for this Channel.
+  virtual bool HandleEitEvent(cSchedule *Schedule, const SI::EIT::Event *EitEvent, uchar TableID, uchar Version) { return false; }
+          ///< Before the raw EitEvent for the given Schedule is processed, the
+          ///< EPG handlers are queried to see if any of them would like to do the
+          ///< complete processing by itself. TableID and Version are from the
+          ///< incoming section data.
+  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; }
+  virtual bool SetDescription(cEvent *Event, const char *Description) { return false; }
+  virtual bool SetContents(cEvent *Event, uchar *Contents) { return false; }
+  virtual bool SetParentalRating(cEvent *Event, int ParentalRating) { return false; }
+  virtual bool SetStartTime(cEvent *Event, time_t StartTime) { return false; }
+  virtual bool SetDuration(cEvent *Event, int Duration) { return false; }
+  virtual bool SetVps(cEvent *Event, time_t Vps) { return false; }
+  virtual bool FixEpgBugs(cEvent *Event) { return false; }
+          ///< Fixes some known problems with EPG data.
+  virtual bool HandleEvent(cEvent *Event) { return false; }
+          ///< After all modifications of the Event have been done, the EPG handler
+          ///< can take a final look at it.
+  virtual bool SortSchedule(cSchedule *Schedule) { return false; }
+          ///< Sorts the Schedule after the complete table has been processed.
+  virtual bool DropOutdated(cSchedule *Schedule, time_t SegmentStart, time_t SegmentEnd, uchar TableID, uchar Version) { return false; }
+          ///< Takes a look at all EPG events between SegmentStart and SegmentEnd and
+          ///< drops outdated events.
+  };
+
+class cEpgHandlers : public cList<cEpgHandler> {
+public:
+  bool IgnoreChannel(const cChannel *Channel);
+  bool HandleEitEvent(cSchedule *Schedule, const SI::EIT::Event *EitEvent, uchar TableID, uchar Version);
+  void SetEventID(cEvent *Event, tEventID EventID);
+  void SetTitle(cEvent *Event, const char *Title);
+  void SetShortText(cEvent *Event, const char *ShortText);
+  void SetDescription(cEvent *Event, const char *Description);
+  void SetContents(cEvent *Event, uchar *Contents);
+  void SetParentalRating(cEvent *Event, int ParentalRating);
+  void SetStartTime(cEvent *Event, time_t StartTime);
+  void SetDuration(cEvent *Event, int Duration);
+  void SetVps(cEvent *Event, time_t Vps);
+  void FixEpgBugs(cEvent *Event);
+  void HandleEvent(cEvent *Event);
+  void SortSchedule(cSchedule *Schedule);
+  void DropOutdated(cSchedule *Schedule, time_t SegmentStart, time_t SegmentEnd, uchar TableID, uchar Version);
+  };
+
+extern cEpgHandlers EpgHandlers;
+
 #endif //__EPG_H

vdr.5

@@ -8,7 +8,7 @@
 .\" License as specified in the file COPYING that comes with the
 .\" vdr distribution.
 .\"
-.\" $Id: vdr.5 2.28 2012/02/27 11:05:15 kls Exp $
+.\" $Id: vdr.5 2.29 2012/03/10 14:56:01 kls Exp $
 .\"
 .TH vdr 5 "10 Feb 2008" "1.6" "Video Disk Recorder Files"
 .SH NAME
@@ -861,7 +861,7 @@ l l.
 <event id>     @is a 32 bit unsigned int, uniquely identifying this event
 <start time>   @is the time (as a time_t integer) in UTC when this event starts
 <duration>     @is the time (in seconds) that this event will take
-<table id>     @is a hex number that indicates the table this event is contained in (if this is left empty or 0 this event will not be overwritten or modified by data that comes from the DVB stream)
+<table id>     @is a hex number that indicates the table this event is contained in (if this is left empty it will be set to 0x00; and value less than 0x4E it will be treated as if it were 0x4E)
 <version>      @is a hex number that indicates the event's version number inside its table (optional, ignored when reading EPG data)
 <title>        @is the title of the event
 <short text>   @is the short text of the event (typically the name of the episode etc.)

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.tvdr.de
  *
- * $Id: vdr.c 2.33 2012/03/08 09:51:52 kls Exp $
+ * $Id: vdr.c 2.34 2012/03/09 09:55:15 kls Exp $
  */
 
 #include <getopt.h>
@@ -1300,6 +1300,7 @@ Exit:
      Setup.Save();
      }
   cDevice::Shutdown();
+  EpgHandlers.Clear();
   PluginManager.Shutdown(true);
   cSchedules::Cleanup(true);
   ReportEpgBugFixStats();