Timeshifting crashes TSWRITER.ax (1 Viewer)

[SciDoctor]

Tested on vista32, xp and w2ksp4 with the same problem. SVN 16369.
Happens with subs on or off with tsreader also

I can record with no problem and also watch while recording but if i try to timeshift live then tswriter.ax crashes the TVSERVICE.

2007-10-27 18:38:46.937500 [14]: Tvservice stopped due to a app domain exception System.ArgumentNullException: Value cannot be null.
Parameter name: collection
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at TvLibrary.TimeShiftingEPGGrabber.OnEpgReceived()
2007-10-27 18:38:51.984375 [10]: user:sk43g heartbeat received
2007-10-27 18:39:26.421875 [5]: Controller: Heartbeat Monitor (30+ sec. max idletime allowed)- kicking idle user
sk43g
2007-10-27 18:39:26.609375 [6]: user:sk43g heartbeat received
2007-10-27 18:39:26.656250 [5]: Controller: StopTimeShifting 1
2007-10-27 18:39:26.718750 [5]: card: StopTimeShifting user:sk43g sub:0
2007-10-27 18:39:26.734375 [5]: user:sk43g remove
2007-10-27 18:39:26.734375 [5]: Stopcard
2007-10-27 18:39:26.750000 [5]: dvb:FreeSubChannel:1 #0
2007-10-27 18:39:26.750000 [5]: subch:0 Decompose()
2007-10-27 18:39:26.750000 [5]: subch:0 StopTimeshifting()
2007-10-27 18:43:36.031250 [1]: Exception in setuptv
2007-10-27 18:43:36.031250 [1]: System.Threading.ThreadExceptionEventArgs


Full logs attached.

 

[tourettes]

Please test without EPG grabbing.

 

[SciDoctor]

Testing at the moment will feedback later.

 

[SciDoctor]

Yep. DVB-t EPG grab is causing the problem somewhere.

With only 'EPG grab while idle' enabled there still is a crash but no logs produced to show an error.

Only disabling all EPG DVB-t grabing allows a trouble free experience.

Tested on vista32, Xpsp3 and w2ksp4.

 

[tourettes]

Yep. DVB-t EPG grab is causing the problem somewhere.

With only 'EPG grab while idle' enabled there still is a crash but no logs produced to show an error.

Only disabling all EPG DVB-t grabing allows a trouble free experience.

Tested on vista32, Xpsp3 and w2ksp4.

Thanks for testing. I hope gemx could have a look on this as he knows how the EPG grabbing works.

 

[SciDoctor]

Latest SVN 16435 still has the same problem. TSWriter.ax crashes when timeshifitng is enabled with either of the DVB-T EPG graboptions set 'on' in the management console.

Recording and DVB-T EPG grab are fine on their own or combined.

This may point to the client being the problem or the Heartbeat monitor?

 

[SciDoctor]

If a DEV is following this bug thread then the following may be of some help.

The log files have shown this error during the TSwriter crash

2007-11-05 20:05:43.453125 [4]: user:sk43g heartbeat received
2007-11-05 20:05:47.546875 [15]: Tvservice stopped due to a app domain exception System.ArgumentNullException: Value cannot be null.
Parameter name: collection
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at TvLibrary.TimeShiftingEPGGrabber.OnEpgReceived()
2007-11-05 20:05:48.500000 [4]: user:sk43g heartbeat received

If you look through the rest of the logs the error isn't occuring everytime the EPG grabs so something specific must be happening on these occasions.

If i can tetst any further debugging code let me know.

 

[gemx]

Will have a look at it tomorrow morning

 

[lkuech]

Hi gemx. Good to see that you are working on this topic

It seems to be related to the "grab epg while timeshifting" function. At least here on my side where I discovered something similar (not really sure if my logs show the same... will check ).

Some time ago this function works pretty well, but since we where able to fix some major bugs with the tswriter this functions seems to be a bit less reliable. I hope you are able to find something.

Bye
Lars

 

[gemx]

Should be fixed in rev 16455