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vdr/timers.c

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/*
* timers.c: Timer handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: timers.c 1.46 2006/02/03 15:20:14 kls Exp $
*/
#include "timers.h"
#include <ctype.h>
#include "channels.h"
#include "device.h"
#include "i18n.h"
#include "remote.h"
// IMPORTANT NOTE: in the 'sscanf()' calls there is a blank after the '%d'
// format characters in order to allow any number of blanks after a numeric
// value!
// -- cTimer -----------------------------------------------------------------
cTimer::cTimer(bool Instant, bool Pause, cChannel *Channel)
{
startTime = stopTime = 0;
recording = pending = inVpsMargin = false;
flags = tfNone;
if (Instant)
SetFlags(tfActive | tfInstant);
channel = Channel ? Channel : Channels.GetByNumber(cDevice::CurrentChannel());
time_t t = time(NULL);
struct tm tm_r;
struct tm *now = localtime_r(&t, &tm_r);
day = SetTime(t, 0);
weekdays = 0;
start = now->tm_hour * 100 + now->tm_min;
stop = now->tm_hour * 60 + now->tm_min + Setup.InstantRecordTime;
stop = (stop / 60) * 100 + (stop % 60);
if (stop >= 2400)
stop -= 2400;
priority = Pause ? Setup.PausePriority : Setup.DefaultPriority;
lifetime = Pause ? Setup.PauseLifetime : Setup.DefaultLifetime;
*file = 0;
summary = NULL;
event = NULL;
if (Instant && channel)
snprintf(file, sizeof(file), "%s%s", Setup.MarkInstantRecord ? "@" : "", *Setup.NameInstantRecord ? Setup.NameInstantRecord : channel->Name());
}
cTimer::cTimer(const cEvent *Event)
{
startTime = stopTime = 0;
recording = pending = inVpsMargin = false;
flags = tfActive;
if (Event->Vps() && Setup.UseVps)
SetFlags(tfVps);
channel = Channels.GetByChannelID(Event->ChannelID(), true);
time_t tstart = (flags & tfVps) ? Event->Vps() : Event->StartTime();
time_t tstop = tstart + Event->Duration();
if (!(HasFlags(tfVps))) {
tstop += Setup.MarginStop * 60;
tstart -= Setup.MarginStart * 60;
}
struct tm tm_r;
struct tm *time = localtime_r(&tstart, &tm_r);
day = SetTime(tstart, 0);
weekdays = 0;
start = time->tm_hour * 100 + time->tm_min;
time = localtime_r(&tstop, &tm_r);
stop = time->tm_hour * 100 + time->tm_min;
if (stop >= 2400)
stop -= 2400;
priority = Setup.DefaultPriority;
lifetime = Setup.DefaultLifetime;
*file = 0;
const char *Title = Event->Title();
if (!isempty(Title))
strn0cpy(file, Event->Title(), sizeof(file));
summary = NULL;
event = Event;
}
cTimer::~cTimer()
{
free(summary);
}
cTimer& cTimer::operator= (const cTimer &Timer)
{
memcpy(this, &Timer, sizeof(*this));
if (summary)
summary = strdup(summary);
event = NULL;
return *this;
}
int cTimer::Compare(const cListObject &ListObject) const
{
cTimer *ti = (cTimer *)&ListObject;
time_t t1 = StartTime();
time_t t2 = ti->StartTime();
int r = t1 - t2;
if (r == 0)
r = ti->priority - priority;
return r;
}
cString cTimer::ToText(bool UseChannelID)
{
char *buffer;
strreplace(file, ':', '|');
strreplace(summary, '\n', '|');
asprintf(&buffer, "%u:%s:%s:%04d:%04d:%d:%d:%s:%s\n", flags, UseChannelID ? *Channel()->GetChannelID().ToString() : *itoa(Channel()->Number()), *PrintDay(day, weekdays), start, stop, priority, lifetime, file, summary ? summary : "");
strreplace(summary, '|', '\n');
strreplace(file, '|', ':');
return cString(buffer, true);
}
cString cTimer::ToDescr(void) const
{
char *buffer;
asprintf(&buffer, "%d (%d %04d-%04d '%s')", Index() + 1, Channel()->Number(), start, stop, file);
return cString(buffer, true);
}
int cTimer::TimeToInt(int t)
{
return (t / 100 * 60 + t % 100) * 60;
}
bool cTimer::ParseDay(const char *s, time_t &Day, int &WeekDays)
{
// possible formats are:
// 19
// 2005-03-19
// MTWTFSS
// MTWTFSS@19
// MTWTFSS@2005-03-19
Day = 0;
WeekDays = 0;
s = skipspace(s);
if (!*s)
return false;
const char *a = strchr(s, '@');
const char *d = a ? a + 1 : isdigit(*s) ? s : NULL;
if (d) {
if (strlen(d) == 10) {
struct tm tm_r;
if (3 == sscanf(d, "%d-%d-%d", &tm_r.tm_year, &tm_r.tm_mon, &tm_r.tm_mday)) {
tm_r.tm_year -= 1900;
tm_r.tm_mon--;
tm_r.tm_hour = tm_r.tm_min = tm_r.tm_sec = 0;
tm_r.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
Day = mktime(&tm_r);
}
else
return false;
}
else {
// handle "day of month" for compatibility with older versions:
char *tail = NULL;
int day = strtol(d, &tail, 10);
if (tail && *tail || day < 1 || day > 31)
return false;
time_t t = time(NULL);
int DaysToCheck = 61; // 61 to handle months with 31/30/31
for (int i = -1; i <= DaysToCheck; i++) {
time_t t0 = IncDay(t, i);
if (GetMDay(t0) == day) {
Day = SetTime(t0, 0);
break;
}
}
}
}
if (a || !isdigit(*s)) {
if ((a && a - s == 7) || strlen(s) == 7) {
for (const char *p = s + 6; p >= s; p--) {
WeekDays <<= 1;
WeekDays |= (*p != '-');
}
}
else
return false;
}
return true;
}
cString cTimer::PrintDay(time_t Day, int WeekDays)
{
#define DAYBUFFERSIZE 32
char buffer[DAYBUFFERSIZE];
char *b = buffer;
if (WeekDays) {
const char *w = tr("MTWTFSS");
while (*w) {
*b++ = (WeekDays & 1) ? *w : '-';
WeekDays >>= 1;
w++;
}
if (Day)
*b++ = '@';
}
if (Day) {
struct tm tm_r;
localtime_r(&Day, &tm_r);
b += strftime(b, DAYBUFFERSIZE - (b - buffer), "%Y-%m-%d", &tm_r);
}
*b = 0;
return buffer;
}
cString cTimer::PrintFirstDay(void) const
{
if (weekdays) {
cString s = PrintDay(day, weekdays);
if (strlen(s) == 18)
return *s + 8;
}
return ""; // not NULL, so the caller can always use the result
}
bool cTimer::Parse(const char *s)
{
char *channelbuffer = NULL;
char *daybuffer = NULL;
char *filebuffer = NULL;
free(summary);
summary = NULL;
//XXX Apparently sscanf() doesn't work correctly if the last %a argument
//XXX results in an empty string (this first occured when the EIT gathering
//XXX was put into a separate thread - don't know why this happens...
//XXX As a cure we copy the original string and add a blank.
//XXX If anybody can shed some light on why sscanf() failes here, I'd love
//XXX to hear about that!
char *s2 = NULL;
int l2 = strlen(s);
while (l2 > 0 && isspace(s[l2 - 1]))
l2--;
if (s[l2 - 1] == ':') {
s2 = MALLOC(char, l2 + 3);
strcat(strn0cpy(s2, s, l2 + 1), " \n");
s = s2;
}
bool result = false;
if (8 <= sscanf(s, "%u :%a[^:]:%a[^:]:%d :%d :%d :%d :%a[^:\n]:%a[^\n]", &flags, &channelbuffer, &daybuffer, &start, &stop, &priority, &lifetime, &filebuffer, &summary)) {
ClrFlags(tfRecording);
if (summary && !*skipspace(summary)) {
free(summary);
summary = NULL;
}
//TODO add more plausibility checks
result = ParseDay(daybuffer, day, weekdays);
strn0cpy(file, filebuffer, MaxFileName);
strreplace(file, '|', ':');
strreplace(summary, '|', '\n');
if (isnumber(channelbuffer))
channel = Channels.GetByNumber(atoi(channelbuffer));
else
channel = Channels.GetByChannelID(tChannelID::FromString(channelbuffer), true, true);
if (!channel) {
esyslog("ERROR: channel %s not defined", channelbuffer);
result = false;
}
}
free(channelbuffer);
free(daybuffer);
free(filebuffer);
free(s2);
return result;
}
bool cTimer::Save(FILE *f)
{
return fprintf(f, "%s", *ToText(true)) > 0;
}
bool cTimer::IsSingleEvent(void) const
{
return !weekdays;
}
int cTimer::GetMDay(time_t t)
{
struct tm tm_r;
return localtime_r(&t, &tm_r)->tm_mday;
}
int cTimer::GetWDay(time_t t)
{
struct tm tm_r;
int weekday = localtime_r(&t, &tm_r)->tm_wday;
return weekday == 0 ? 6 : weekday - 1; // we start with monday==0!
}
bool cTimer::DayMatches(time_t t) const
{
return IsSingleEvent() ? SetTime(t, 0) == day : (weekdays & (1 << GetWDay(t))) != 0;
}
time_t cTimer::IncDay(time_t t, int Days)
{
struct tm tm_r;
tm tm = *localtime_r(&t, &tm_r);
tm.tm_mday += Days; // now tm_mday may be out of its valid range
int h = tm.tm_hour; // save original hour to compensate for DST change
tm.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
t = mktime(&tm); // normalize all values
tm.tm_hour = h; // compensate for DST change
return mktime(&tm); // calculate final result
}
time_t cTimer::SetTime(time_t t, int SecondsFromMidnight)
{
struct tm tm_r;
tm tm = *localtime_r(&t, &tm_r);
tm.tm_hour = SecondsFromMidnight / 3600;
tm.tm_min = (SecondsFromMidnight % 3600) / 60;
tm.tm_sec = SecondsFromMidnight % 60;
tm.tm_isdst = -1; // makes sure mktime() will determine the correct DST setting
return mktime(&tm);
}
char *cTimer::SetFile(const char *File)
{
if (!isempty(File))
strn0cpy(file, File, sizeof(file));
return file;
}
bool cTimer::Matches(time_t t, bool Directly) const
{
startTime = stopTime = 0;
if (t == 0)
t = time(NULL);
int begin = TimeToInt(start); // seconds from midnight
int length = TimeToInt(stop) - begin;
if (length < 0)
length += SECSINDAY;
if (IsSingleEvent()) {
startTime = SetTime(day, begin);
stopTime = startTime + length;
}
else {
for (int i = -1; i <= 7; i++) {
time_t t0 = IncDay(t, i);
if (DayMatches(t0)) {
time_t a = SetTime(t0, begin);
time_t b = a + length;
if ((!day || a >= day) && t <= b) {
startTime = a;
stopTime = b;
break;
}
}
}
if (!startTime)
startTime = day; // just to have something that's more than a week in the future
else if (!Directly && (t > startTime || t > day + SECSINDAY + 3600)) // +3600 in case of DST change
day = 0;
}
if (HasFlags(tfActive)) {
if (HasFlags(tfVps) && !Directly && event && event->Vps() && event->Schedule() && event->Schedule()->PresentSeenWithin(30)) {
startTime = event->StartTime();
stopTime = event->EndTime();
return event->IsRunning(true);
}
return startTime <= t && t < stopTime; // must stop *before* stopTime to allow adjacent timers
}
return false;
}
#define FULLMATCH 1000
int cTimer::Matches(const cEvent *Event, int *Overlap) const
{
// Overlap is the percentage of the Event's duration that is covered by
// this timer (based on FULLMATCH for finer granularity than just 100).
// To make sure a VPS timer can be distinguished from a plain 100% overlap,
// it gets an additional 100 added, and a VPS event that is actually running
// gets 200 added to the FULLMATCH.
if (HasFlags(tfActive) && channel->GetChannelID() == Event->ChannelID()) {
bool UseVps = HasFlags(tfVps) && Event->Vps();
Matches(UseVps ? Event->Vps() : Event->StartTime(), true);
int overlap = 0;
if (UseVps)
overlap = (startTime == Event->Vps()) ? FULLMATCH + (Event->IsRunning() ? 200 : 100) : 0;
if (!overlap) {
if (startTime <= Event->StartTime() && Event->EndTime() <= stopTime)
overlap = FULLMATCH;
else if (stopTime <= Event->StartTime() || Event->EndTime() <= startTime)
overlap = 0;
else
overlap = (min(stopTime, Event->EndTime()) - max(startTime, Event->StartTime())) * FULLMATCH / max(Event->Duration(), 1);
}
startTime = stopTime = 0;
if (Overlap)
*Overlap = overlap;
return overlap >= 1000 ? tmFull : overlap > 0 ? tmPartial : tmNone;
}
return tmNone;
}
#define EXPIRELATENCY 60 // seconds (just in case there's a short glitch in the VPS signal)
bool cTimer::Expired(void) const
{
return IsSingleEvent() && !Recording() && StopTime() + EXPIRELATENCY <= time(NULL);
}
time_t cTimer::StartTime(void) const
{
if (!startTime)
Matches();
return startTime;
}
time_t cTimer::StopTime(void) const
{
if (!stopTime)
Matches();
return stopTime;
}
void cTimer::SetEvent(const cEvent *Event)
{
if (event != Event) { //XXX TODO check event data, too???
if (Event) {
char vpsbuf[64] = "";
if (Event->Vps())
sprintf(vpsbuf, "(VPS: %s) ", *Event->GetVpsString());
isyslog("timer %s set to event %s %s-%s %s'%s'", *ToDescr(), *Event->GetDateString(), *Event->GetTimeString(), *Event->GetEndTimeString(), vpsbuf, Event->Title());
}
else
isyslog("timer %s set to no event", *ToDescr());
event = Event;
}
}
void cTimer::SetRecording(bool Recording)
{
recording = Recording;
if (recording)
SetFlags(tfRecording);
else
ClrFlags(tfRecording);
isyslog("timer %s %s", *ToDescr(), recording ? "start" : "stop");
}
void cTimer::SetPending(bool Pending)
{
pending = Pending;
}
void cTimer::SetInVpsMargin(bool InVpsMargin)
{
if (InVpsMargin && !inVpsMargin)
isyslog("timer %s entered VPS margin", *ToDescr());
inVpsMargin = InVpsMargin;
}
void cTimer::SetPriority(int Priority)
{
priority = Priority;
}
void cTimer::SetFlags(uint Flags)
{
flags |= Flags;
}
void cTimer::ClrFlags(uint Flags)
{
flags &= ~Flags;
}
void cTimer::InvFlags(uint Flags)
{
flags ^= Flags;
}
bool cTimer::HasFlags(uint Flags) const
{
return (flags & Flags) == Flags;
}
void cTimer::Skip(void)
{
day = IncDay(SetTime(StartTime(), 0), 1);
event = NULL;
}
void cTimer::OnOff(void)
{
if (IsSingleEvent())
InvFlags(tfActive);
else if (day) {
day = 0;
ClrFlags(tfActive);
}
else if (HasFlags(tfActive))
Skip();
else
SetFlags(tfActive);
event = NULL;
Matches(); // refresh start and end time
}
// -- cTimers ----------------------------------------------------------------
cTimers Timers;
cTimers::cTimers(void)
{
state = 0;
beingEdited = 0;;
lastSetEvents = 0;
}
cTimer *cTimers::GetTimer(cTimer *Timer)
{
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if (ti->Channel() == Timer->Channel() &&
(ti->WeekDays() && ti->WeekDays() == Timer->WeekDays() || !ti->WeekDays() && ti->Day() == Timer->Day()) &&
ti->Start() == Timer->Start() &&
ti->Stop() == Timer->Stop())
return ti;
}
return NULL;
}
cTimer *cTimers::GetMatch(time_t t)
{
static int LastPending = -1;
cTimer *t0 = NULL;
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if (!ti->Recording() && ti->Matches(t)) {
if (ti->Pending()) {
if (ti->Index() > LastPending)
LastPending = ti->Index();
else
continue;
}
if (!t0 || ti->Priority() > t0->Priority())
t0 = ti;
}
}
if (!t0)
LastPending = -1;
return t0;
}
cTimer *cTimers::GetMatch(const cEvent *Event, int *Match)
{
cTimer *t = NULL;
int m = tmNone;
for (cTimer *ti = First(); ti; ti = Next(ti)) {
int tm = ti->Matches(Event);
if (tm > m) {
t = ti;
m = tm;
if (m == tmFull)
break;
}
}
if (Match)
*Match = m;
return t;
}
cTimer *cTimers::GetNextActiveTimer(void)
{
cTimer *t0 = NULL;
for (cTimer *ti = First(); ti; ti = Next(ti)) {
if ((ti->HasFlags(tfActive)) && (!t0 || ti->StopTime() > time(NULL) && ti->Compare(*t0) < 0))
t0 = ti;
}
return t0;
}
void cTimers::SetModified(void)
{
state++;
}
bool cTimers::Modified(int &State)
{
bool Result = state != State;
State = state;
return Result;
}
#define EPGLIMITPAST (2 * 3600) // time in seconds around now, within which EPG events will be taken into consideration
#define EPGLIMITFUTURE (4 * 3600)
void cTimers::SetEvents(void)
{
if (time(NULL) - lastSetEvents < 5)
return;
cSchedulesLock SchedulesLock(false, 100);
const cSchedules *Schedules = cSchedules::Schedules(SchedulesLock);
if (Schedules) {
if (!lastSetEvents || Schedules->Modified() >= lastSetEvents) {
for (cTimer *ti = First(); ti; ti = Next(ti)) {
const cSchedule *Schedule = Schedules->GetSchedule(ti->Channel());
if (Schedule) {
if (!lastSetEvents || Schedule->Modified() >= lastSetEvents) {
const cEvent *Event = NULL;
int Overlap = 0;
int Distance = INT_MIN;
time_t now = time(NULL);
for (const cEvent *e = Schedule->Events()->First(); e; e = Schedule->Events()->Next(e)) {
if (cRemote::HasKeys())
return; // react immediately on user input
if (e->EndTime() < now - EPGLIMITPAST)
continue; // skip old events
if (e->StartTime() > now + EPGLIMITFUTURE)
break; // no need to process events too far in the future
int overlap = 0;
ti->Matches(e, &overlap);
if (overlap && overlap >= Overlap) {
int distance = 0;
if (now < e->StartTime())
distance = e->StartTime() - now;
else if (now > e->EndTime())
distance = e->EndTime() - now;
if (Event && overlap == Overlap) {
if (Overlap > FULLMATCH) { // this means VPS
if (abs(Distance) < abs(distance))
break; // we've already found the closest VPS event
}
else if (e->Duration() <= Event->Duration())
continue; // if overlap is the same, we take the longer event
}
Overlap = overlap;
Distance = distance;
Event = e;
}
}
if (Event && Event->EndTime() < now - EXPIRELATENCY && !Event->IsRunning())
Event = NULL;
ti->SetEvent(Event);
}
}
}
}
}
lastSetEvents = time(NULL);
}
void cTimers::DeleteExpired(void)
{
cTimer *ti = First();
while (ti) {
cTimer *next = Next(ti);
if (ti->Expired()) {
isyslog("deleting timer %s", *ti->ToDescr());
Del(ti);
SetModified();
}
ti = next;
}
}
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