When adding a new event remove others with the same start time and the
same service id, but possibly different event id.
This reduces the number of duplicates significantly, and is basically
similar to what other projects are doing for this case.
Due to the significant overhead this needs to be explicitly enabled by
exporting the TEST_ADDEVENT environment variable before starting
neutrino for now. Please test and report your findings to the mailing
list.
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Just take the write lock right away, to make sure nothing changes the
event lists behind our backs and possibly corrupts the iterator.
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The crashes probably were caused by the iterator being invalid
due to concurrent insertion and deletion of events.
An obvious fix is to collect the list of events to delete while
holding the read lock, and later deleting them all in an extra loop.
Turned out to be less complicated than I originally expected ;)
TODO: audit the sectionsd code for similar stuff in other places.
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removeDupEvents has some yet to be discovered design problem which
leads to crashes after some time, which smell like stack corruption
or locking issues wrt. the event lists
Obviously it needs some more thought, so disable it for now.
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Use the set of events which is sorted by start time and
service id intead of the one sorted by end time to iterate
through the list of events. Fixes a mysterious crash on ppc.
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Sometimes the playout centers seem to "renumber" the events, leading
to duplicates.
This "removeDupEvents()" checks for events from the same service, with
identical start time and duration. If it finds such events, it keeps
the one with the lower (== more recent) table_id.
This check is run from the hosekeeping thread.
It could be extended to also remove overlapping events, but this is
potentially more dangerous and can be implemented later still.
As this code is experimental, it is pretty noisy for now. The debugging
output should be toned down later.
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If we get a new epg event whose eventID is already existing, still
replace the existing event if the table ID of the new event is lower.
This comes from the observation that the lower table IDs have the
"more current" events:
Table 0x60-0x6f: other TS, scheduled
0x50-0x5f: current TS, scheduled
0x4f: other TS, current/next
0x4e: current TS, current/next
So, at at least in theory, an event from table 0x4e should always be
"better" than one from 0x60.
If you see any regressions, don't hesitate to report them.
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record the originating table ID with every event
if not set (e.g. for events read from saved data), it defaults
to 0xff to make sure it is bigger than a real existing table ID
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This should ensure that the system time somehow matches the
transponder time. Comments and reports welcome on the developers
mailinglist. If this turns out to be not working well for all
setups, it could be made configurable.
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* during startup, get time from TDT, to get *any* time information quickly
* after startup, immediately (after 5 seconds) retry with TDT
* later calls only use TOT. TOT is not broadcast on all channels, but the
channels that broadcast a TOT usually are much more "trustworthy" wrt
time setting
Comments welcome, also reports if this works worse than before
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* reduce EIT timeout to 3 seconds
* if there are no events broadcast, send an event to neutrino anyway
* when EIT has changed but events are the same, return to sleep faster
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If the short description of an event was empty, only 40 chars of the
extended description were sent. This causes truncated text in the
channellist's details window.
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add generic audio, video and demux headers in zapit/include (TODO: put them
into a better place, or put wrappers into lib directories) that automatically
dispatch to the hardware specific functions and use them in the code
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this helps with spurious hangs on exit / ctrl-C
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the variable types are not really used as intended, so we can
as well avoid using them at all to make it easier to port to
other platforms
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Fortunately, those exceptions do not trigger. If they did, they
would kill the box as an unhandled exception would lead to an unclean
shutdown of the drivers anyway, so we can just do without them as in
the rest of neutrino.
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Lots of places hat casts from (const char*) to (char *) to silence
a "deprecated conversion" warning. Instead of casting (which is
inherently wrong), fix up the libxmltree interfaces.
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