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#mythtv IRC Logs for 2004-11-01

---Logopened Mon Nov 01 00:00:59 2004
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02:34crb thor_: around?
02:35crb I'm the guy who's been having trouble jumping around the "add music to play list" in mythmusic.
02:35crb turns out it is X, CPU usage for X jumps to 85-90% when you hit a number.
02:35stoffel_ he's probably sleeping
02:35crb Even in vesa mode.
02:35crb stoffel_: I'm in NZ. I get that a lot on irc. :)
02:35stoffel_ hehe
02:36stoffel_ did you write about it on the mailing list?
02:36crb I did
02:36stoffel_ i think i'm seeing a similar behaviour on my laptop frontend
02:36crb I've just posted a followup
02:37crb Henk Schoneveld suggested that it was X, and that changing to vesa should fix it
02:37crb It doesn't, unfortunately.
02:38stoffel_ i don't remember exactly when it started, it _might_ have been after a qt libs update
02:41crb I've always had this problem. always just assumed it was "lots of music".
02:51* LLyric too stupid to figure out the playlist stuff
02:53crb Well, its easy enough to use, if not a bit hard to navigate.
02:53crb From a user perspective, anyway.
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03:30crb X sits there with this repeating in the strace:
03:30crb --- SIGALRM (Alarm clock) @ 0 (0) ---
03:30crb sigreturn() = ? (mask now [])
03:30crb select(256, [1 4 9 10], NULL, NULL, {0, 0}) = 0 (Timeout)
03:31crb munmap(0xd7bfc000, 327680) = 0
03:31crb mmap2(NULL, 327680, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xd7bac000
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04:16stoffel_ in mythmusic?
04:17crb yeah
04:18crb when in the 'add music to playlist' screen
04:18crb I hit a number key to jump around the list of music
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04:39omry Hi all, does mythtv gets tv guide info from the sattelite receiver?
04:43truls omry: read the topic
04:43omry truls, I am a developer, would like to know its its been done, and if not, why.
04:51truls omry: just seemed a waste to spam both channels, especially since most mythtv developers are on mythtv-users
04:51* LLyric chuckles
04:52omry truls, I initially tried here, but than I got some responses there, so I`ll continue there.
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07:42jhs_s For via XMVC I had to change one line in CVS to build it:
07:43jhs_s Instead of #include <X11/extensions/vldXvMC.h>, I had to use #include <X11/extensions/viaXvMC.h> in xvmc_render.h
07:43jhs_s I works really great, much better than the old libddmpeg!
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20:58dopester wow getting feedback.. amazing..
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21:12dopester chutt: you got any idea about the XLib async: error that guy had with my code? ive see it once or twice, but its hard to reproduce.. im sure its related to the signal meter updates..
21:12dopester i can slow them down, but that might just reduce the frequency of the crashes..
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22:40Chutt you're doing UI stuff in multiple threads
22:41Chutt and that's bad.
22:50dopester ahhhh..
22:51dopester a lock on the screen update would solve that right? i really don't want to get rid of the signal meters (its already proven somewhat needed from some responses ive seen)
22:51cmorgan no
22:52cmorgan you should never update the ui from any other than the main thread
22:52cmorgan the easiest way is to send signals around
22:52dopester uh its all connected with signals
22:53dopester seperate threads control differnet objects in the ui though
22:53Chutt events, not signals.
22:53cmorgan events, signals, i'm using the term loosely
22:53Chutt signals are same-thread :p
22:53cmorgan dopester: yeah, thats pretty dangerous i think
22:53cmorgan dopester: you'll want the main thread to handle all ui updates
22:54dopester ahh connect the signals to the main thread and make it then in turn do the updating?
22:54Chutt no
22:54Chutt no signals
22:54cmorgan events
22:54Chutt must use events
22:54cmorgan sorry for using signals, i meant events
22:56dopester so make the ui poll the channel device for the signal level instead of the patched signals crap thats in there now?
22:57Chutt or make thse signal updating stuff send an event
22:57Chutt but either way would work
22:57dopester ok thats probabbly not too bad to fix up..
22:57dopester any examples to look at in the myth code you'd suggest?
22:57cmorgan dopester: i think nearly everyone using qt or gtk has gotten bitten by that before
22:58dopester it happened so rarely and id never seen it before so i was a bit confused..
22:58dopester hell this is the first threaded stuff ive done that i didnt have someone write the threading parts for me
22:59dopester mutex locking was killing me for weeks before i got a full grip on it..
22:59dopester i bet i just made chutt really worry about my code :)
23:00Chutt yup
23:00Chutt but that's ok
23:00Chutt current stuff wasn't written by anyone who understands threads either
23:01dopester well if you get a chance to look at what i got please let me know if you see any glaring issues..
23:01dopester i based most of it on the tv_rec.cpp teardown recorder which makes sense to me now..
23:02dopester im just amazed at how stable the old/current-in-cvs dvb code is with teh threading like it is
23:03dopester all of the backend crashes ive had in about 4-5 months (maybe 2 or 3) have been from hte commercial flagger crapping out on a corrupted mpeg that dvbrecorder created
23:04dopester oh course it always happens when i am not running my backend in gdb :)
23:09Captain_Murdo| dopester: with the current code I'm running in my tree, that shouldn't kill the backend anymore. I made it start calling mythcommflag rather than firing off a thread.
23:10dopester captain_murdoch: awesome
23:12dopester yeah that latest guys issues have a big TODO note in the function that isn't finding the associated transport id :)
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---Logclosed Tue Nov 02 00:00:22 2004