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* epg.h: Electronic Program Guide
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
* Original version (as used in VDR before 1.3.0) written by
* Robert Schneider <> and Rolf Hakenes <>.
* $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"
enum { MaxEventContents = 4 };
enum eEventContentGroup {
ecgMovieDrama = 0x10,
ecgNewsCurrentAffairs = 0x20,
ecgShow = 0x30,
ecgSports = 0x40,
ecgChildrenYouth = 0x50,
ecgMusicBalletDance = 0x60,
ecgArtsCulture = 0x70,
ecgSocialPoliticalEconomics = 0x80,
ecgEducationalScience = 0x90,
ecgLeisureHobbies = 0xA0,
ecgSpecial = 0xB0,
ecgUserDefined = 0xF0
enum eDumpMode { dmAll, dmPresent, dmFollowing, dmAtTime };
struct tComponent {
uchar stream;
uchar type;
char language[MAXLANGCODE2];
char *description;
cString ToString(void);
bool FromString(const char *s);
class cComponents {
int numComponents;
tComponent *components;
bool Realloc(int Index);
int NumComponents(void) const { return numComponents; }
void SetComponent(int Index, const char *s);
void SetComponent(int Index, uchar Stream, uchar Type, const char *Language, const char *Description);
tComponent *Component(int Index) const { return (Index < numComponents) ? &components[Index] : NULL; }
tComponent *GetComponent(int Index, uchar Stream, uchar Type); // Gets the Index'th component of Stream and Type, skipping other components
// In case of an audio stream the 'type' check actually just distinguishes between "normal" and "Dolby Digital"
class cSchedule;
typedef u_int32_t tEventID;
class cEvent : public cListObject {
friend class cSchedule;
// The sequence of these parameters is optimized for minimal memory waste!
cSchedule *schedule; // The Schedule this event belongs to
tEventID eventID; // Event ID of this event
uchar tableID; // Table ID this event came from
uchar version; // Version number of section this event came from
uchar runningStatus; // 0=undefined, 1=not running, 2=starts in a few seconds, 3=pausing, 4=running
uchar parentalRating; // Parental rating of this event
char *title; // Title of this event
char *shortText; // Short description of this event (typically the episode name in case of a series)
char *description; // Description of this event
cComponents *components; // The stream components of this event
uchar contents[MaxEventContents]; // Contents of this event
time_t startTime; // Start time of this event
int duration; // Duration of this event in seconds
time_t vps; // Video Programming Service timestamp (VPS, aka "Programme Identification Label", PIL)
time_t seen; // When this event was last seen in the data stream
cEvent(tEventID EventID);
virtual int Compare(const cListObject &ListObject) const;
tChannelID ChannelID(void) const;
const cSchedule *Schedule(void) const { return schedule; }
tEventID EventID(void) const { return eventID; }
uchar TableID(void) const { return tableID; }
uchar Version(void) const { return version; }
int RunningStatus(void) const { return runningStatus; }
const char *Title(void) const { return title; }
const char *ShortText(void) const { return shortText; }
const char *Description(void) const { return description; }
const cComponents *Components(void) const { return components; }
uchar Contents(int i = 0) const { return (0 <= i && i < MaxEventContents) ? contents[i] : uchar(0); }
int ParentalRating(void) const { return parentalRating; }
time_t StartTime(void) const { return startTime; }
time_t EndTime(void) const { return startTime + duration; }
int Duration(void) const { return duration; }
time_t Vps(void) const { return vps; }
time_t Seen(void) const { return seen; }
bool SeenWithin(int Seconds) const { return time(NULL) - seen < Seconds; }
bool HasTimer(void) const;
bool IsRunning(bool OrAboutToStart = false) const;
static const char *ContentToString(uchar Content);
cString GetParentalRatingString(void) const;
cString GetDateString(void) const;
cString GetTimeString(void) const;
cString GetEndTimeString(void) const;
cString GetVpsString(void) const;
void SetEventID(tEventID EventID);
void SetTableID(uchar TableID);
void SetVersion(uchar Version);
void SetRunningStatus(int RunningStatus, cChannel *Channel = NULL);
void SetTitle(const char *Title);
void SetShortText(const char *ShortText);
void SetDescription(const char *Description);
void SetComponents(cComponents *Components); // Will take ownership of Components!
void SetContents(uchar *Contents);
void SetParentalRating(int ParentalRating);
void SetStartTime(time_t StartTime);
void SetDuration(int Duration);
void SetVps(time_t Vps);
void SetSeen(void);
cString ToDescr(void) const;
void Dump(FILE *f, const char *Prefix = "", bool InfoOnly = false) const;
bool Parse(char *s);
static bool Read(FILE *f, cSchedule *Schedule);
void FixEpgBugs(void);
class cSchedules;
class cSchedule : public cListObject {
tChannelID channelID;
cList<cEvent> events;
cHash<cEvent> eventsHashID;
cHash<cEvent> eventsHashStartTime;
bool hasRunning;
time_t modified;
time_t presentSeen;
cSchedule(tChannelID ChannelID);
tChannelID ChannelID(void) const { return channelID; }
time_t Modified(void) const { return modified; }
time_t PresentSeen(void) const { return presentSeen; }
bool PresentSeenWithin(int Seconds) const { return time(NULL) - presentSeen < Seconds; }
void SetModified(void) { modified = time(NULL); }
void SetPresentSeen(void) { presentSeen = time(NULL); }
void SetRunningStatus(cEvent *Event, int RunningStatus, cChannel *Channel = NULL);
void ClrRunningStatus(cChannel *Channel = NULL);
void ResetVersions(void);
void Sort(void);
void DropOutdated(time_t SegmentStart, time_t SegmentEnd, uchar TableID, uchar Version);
void Cleanup(time_t Time);
void Cleanup(void);
cEvent *AddEvent(cEvent *Event);
void DelEvent(cEvent *Event);
void HashEvent(cEvent *Event);
void UnhashEvent(cEvent *Event);
const cList<cEvent> *Events(void) const { return &events; }
const cEvent *GetPresentEvent(void) const;
const cEvent *GetFollowingEvent(void) const;
const cEvent *GetEvent(tEventID EventID, time_t StartTime = 0) const;
const cEvent *GetEventAround(time_t Time) const;
void Dump(FILE *f, const char *Prefix = "", eDumpMode DumpMode = dmAll, time_t AtTime = 0) const;
static bool Read(FILE *f, cSchedules *Schedules);
class cSchedulesLock {
bool locked;
cSchedulesLock(bool WriteLock = false, int TimeoutMs = 0);
bool Locked(void) { return locked; }
class cSchedules : public cList<cSchedule> {
friend class cSchedule;
friend class cSchedulesLock;
cRwLock rwlock;
static cSchedules schedules;
static const char *epgDataFileName;
static time_t lastCleanup;
static time_t lastDump;
static time_t modified;
static void SetEpgDataFileName(const char *FileName);
static const cSchedules *Schedules(cSchedulesLock &SchedulesLock);
///< Caller must provide a cSchedulesLock which has to survive the entire
///< time the returned cSchedules is accessed. Once the cSchedules is no
///< longer used, the cSchedulesLock must be destroyed.
static time_t Modified(void) { return modified; }
static void SetModified(cSchedule *Schedule);
static void Cleanup(bool Force = false);
static void ResetVersions(void);
static bool ClearAll(void);
static bool Dump(FILE *f, const char *Prefix = "", eDumpMode DumpMode = dmAll, time_t AtTime = 0);
static bool Read(FILE *f = NULL);
cSchedule *AddSchedule(tChannelID ChannelID);
const cSchedule *GetSchedule(tChannelID ChannelID) const;
const cSchedule *GetSchedule(const cChannel *Channel, bool AddIfMissing = false) const;
class cEpgDataReader : public cThread {
virtual void Action(void);
void ReportEpgBugFixStats(bool Reset = false);
class cEpgHandler : public cListObject {
///< 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> {
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