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#mythtv IRC Logs for 2008-07-02

---Logopened Wed Jul 02 00:00:31 2008
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00:06<Chutt>maybe i can setup some hacky callbacks
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05:18<gbee>DrawImage seems to behave differently based on the painter, GL stretches a cropped image to the size of the original, QT just draws the cropped area without stretching
05:19<gbee>not sure which is the correct default behaviour, but having both would be useful
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07:15<gbee>stuarta: don't think it affects us, but just in case -
07:23<janneg>gbee: the NIT was probably transmitted in multiple sections. that's valid but some STBs can't cope with it
07:24<gbee>janneg: yeah, I don't know the details, only mentioned it in case users start to report problems but I'm not expecting trouble (changes started a month ago)
07:27<janneg>it's no problem in mythtv. Some boxes have/had the same problem with multiple sections SDT in Berlin
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07:39<mzb_d800>kvandivo: do I really need to be hit with that message?
07:44<Dibblah>Everyone is if they're not active in-channel for some time.
07:49<mzb_d800>not quite as bad as junk mail, I guess :|
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12:01<stuarta>gbee: thanks for that link
12:02<stuarta>i was just reading the -dev list and those changes Chutt wrote to add QHostInfo to MSocketDevice
12:02<stuarta>wonder if that'll let ppl specify their backend by name not ip as is required now
12:03<Chutt>it will
12:03<stuarta>thought it might
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12:04<stuarta>interesting. Mux B is going to be converted to DVB-T2
12:05<laga>is there capture hardware for that?
12:05*stuarta fires up google
12:07<gbee>no, DVB-T2 isn't even an agreed spec yet
12:07<gbee>you won't see any hardware until manufacturers know what they are producing ;)
12:07<stuarta>Multiplex B will be reconfigured to use the recently-ratified DVB-T2 transmission standard and MPEG4 compression - both capacity-enhancing versions of the current DVB-T and MPEG2 standards used on existing digital terrestrial multiplexes
12:08<stuarta>the key being "recently-ratified"
12:08<stuarta>~= no time soon
12:09<stuarta>however i don't think it's much different to dvb-s2, so the silicon may be able to be reused
12:09<stuarta>that quote was from btw
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12:10<gbee>STB manufacturers reckon that it's far too optimistic of Ofcom that the hardware will be available in late 2009
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12:11<stuarta>well the STBs that do h264 are already out
12:11<stuarta>so it's only the dvb-t2 part that needs work
12:11<stuarta>since i'm sure there's already mpeg4 on sat
12:12<gbee>ETSI standard for DVB-T2 won't published until April next year if you believe wikipedia
12:12<gbee>there is
12:12<stuarta>i might have to fish that standard out
12:15<janneg>dvb-t2 specs are out since monday
12:17<janneg>Chutt: good work on removing qt3support
12:17<Chutt>hopefully it all works
12:17<stuarta>i'll download them when i get home
12:17*stuarta heads home
12:18<janneg>I've attempted to convert mythsocket to Q*Socket but I never got it working
12:19<Chutt>i cheated, there
12:19<janneg>after that my motivation to kill qt3support got very small
12:20<janneg>yeah, I didn't thought of importing QSocketDevice
12:23<GreyFoxx>Doh, looks like QSocketNotifier only works from within a Qthread
12:23<GreyFoxx>I was hoping to just change udpnotify to the MSocketDevice
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12:23<Chutt>that needs to be a QThread
12:23<Chutt>spawned by a QThread
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12:25<GreyFoxx>So the TV Class creates an instance of UDPNotify, which spawns a QThread to bind and monitor the port. Or add a 1 line check to the MainLoop ;)
12:25<janneg>I think we should use always QThread if we don't use any pthread specifics
12:25<Chutt>we need to convert all the pthread stuff to qthreads
12:25<GreyFoxx>TV() uses pthread now doesn't it ?
12:25<Chutt>better for portability that way, anyway
12:25<Chutt>need to reduce polling.
12:27<janneg>yes and there are a couple of Qt classes which expect QThreads, QRegExp for example
12:27<Chutt>maybe that'll be my next task
12:27<Chutt>instead of de-qt3supporting libmythupnp
12:28<janneg>Chutt: there is a ticket with a probably outdated patch
12:28<Chutt>any idea what #?
12:29<janneg>but it lost it attachments
12:31<janneg>a trac update side effect?
12:31<Chutt>shouldn't be
12:31<Chutt>i don't think other stuff got deleted
12:31<Chutt>certainly could be, though
12:32<Chutt>that reminded me to check on how trac was running
12:32<Chutt>less memory these days =)
12:33<GreyFoxx>Do you know the date the ticfket/attachement went on ?
12:33<GreyFoxx>Oh wait, those aren't sent in emails like commits do
12:33<GreyFoxx>I was gonna go to my mail archive :)
12:34<janneg>no, but after looking at the ticket reporter, the patches might have come by mail
12:35*GreyFoxx checks
12:36<GreyFoxx>ok, Feb 21st
12:36<GreyFoxx>Lot less to search :)
12:36<janneg>Subject: Backend crashes (related to EIT) - possible fix attached
12:36<janneg>I have the patch
12:37<GreyFoxx>Ahh ok
12:39<janneg>it converts only the TVRec threads, so it's not of much use
12:45<Chutt>having a template is useful
12:50<Dibblah>Chutt: Once again (As I know I've asked this before) isn't the majority of the pthread -> qthread pretty mechanical?
12:51<Chutt>well, it could be
12:51<Dibblah>As in could be done by a much less important drone?
12:51<Chutt>but, take mythsocket's ready-read thread
12:51<Chutt>could do some cleanup
12:51<Chutt>at the same time
12:51<Dibblah>Ah, right.
12:52<Chutt>a lot of the other ones, though, sure
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12:53<Dibblah>How stable is trunk? Obviously, I don't want to be making changes without running it.
12:54<Chutt>i think it's pretty stable
12:54<Chutt>i'm using it on my production box
12:54<Chutt>but it _is_ summer
12:54<Chutt>so if it doesn't record something, it's not a _huge_ deal.
12:55<Chutt>although psych and monk are starting up soon...
12:57<kvandivo>mzb_d800: I was out of this channel for a while, too. It's possible that you had logged in during that timeframe and my script didn't remind you then, so it chose to remind you this more recent time
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13:01<gnome42>janneg: Hi, I am going to send 3 trivial patchlets to the ffmpeg list. I don't think myth uses any of those code paths except for maybe aviobuf.c. Are any of them worth queueing up in trac?
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13:19<gbee>I need image clipping in the GL painter
13:20<gbee>gnome42: is that domain correct? not resolving here
13:30<gnome42>gbee: Oh, really? It's dynamic but resolves ok here (
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13:39<Chutt>gbee, should just be a small change to DrawImage
13:42<gbee>Chutt: yeah, I just need to read up on opengl so I can understand what glTexCoord2f, glVertex2f etc are doing there
13:43<gbee>may add an argument to DrawImage so that the present crop/scale behaviour can optionally be switched for straight cropping
13:45<gbee>atm, in what seems to be a difference from the QT painter the GL painter scales up the image obtained using src to the size of the original image, QT painter maintains the size of src and just uses the original image area (r) for positioning
13:47<gbee>back in a bit
13:48<janneg>gnome42: no, I'll pick them up soon with ffmpeg merge if they get accepted
13:49<janneg>if one is important enough for -fixes you should create a ticket
13:49<gnome42>janneg: ok, cool. Thanks for looking.
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14:28<Chutt>gbee, ah, that should be easy to fix
14:29<Chutt>use src.width()/height() instead of r.width()/height() in the glTexCoord2f() calls
14:29<Chutt>well, the smaller of the two, rather
14:29<Chutt>min(src.width(), r.width()
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15:10<TheDarkAura>(12:09:43 PM) kvandivo: Welcome to #mythtv. First, note the channel topic. This channel is
15:10<TheDarkAura>(12:09:43 PM) kvandivo: for developers who are developing or modifying code for mythtv. Just
15:10<TheDarkAura>(12:09:44 PM) kvandivo: compiling mythtv isn't considered development. This is not a channel for
15:10<TheDarkAura>(12:09:44 PM) kvandivo: users to ask the developers questions about what mythtv does, what hardware
15:10<TheDarkAura>(12:09:44 PM) kvandivo: works, etc. For that, go to #mythtv-users or the mythtv users mailing list.
15:10<TheDarkAura>(12:09:46 PM) kvandivo: #mythtv-users being 'empty' or not knowing the answer is also not an
15:10<TheDarkAura>(12:09:48 PM) kvandivo: excuse to ask user questions in this channel. Ignore this at your own risk.
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15:14<Anduin>It isn't going to change, don't ask.
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15:29<gbee>cool, progress bar is working with the GL painter now :)
15:32<Chutt>with clipping?
15:32<clever>i find most gl based stuff goes nuts if 2 programs try to use it at once
15:32<Chutt>i meant, because of the clipping?
15:32<clever>compiz&google earth
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15:34<gbee>Chutt: yeah, the method I was using depended on clipping which I thought was already there - the GL painter scaling instead prevented it from working as intended
15:34<Chutt>myth should be all by itself, so.. =)
15:34<clever>i often run myth with compiz:P
15:35<gbee>now I just need to clear up and get it committed
15:37<Chutt>is it possible to hook up to the pre-scaler to test?
15:38<gbee>problem with the prescaler is that it's shown before we load the theme, which means it's not themable
15:39<gbee>but I can come up with something
15:39<Chutt>we still need non-themed stuff for some of the early setup dialogs
15:39<Chutt>like language
15:39<Chutt>and database
15:39<gbee>to test I replaced the busy/progress dialogs in the mythmusic filescanner
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15:41<gbee>I'll sort out something for the prescaler
15:42<Chutt>just have some simple images or whatnot, i guess
15:43<gbee>Chutt: or generate gradient fills, they scale pretty well
15:46<gbee>background is optional there, and you could stick whatever images you wanted in, so in my case I'd probably drop a glass effect alpha in front of the progress image for metallurgy
15:47<gbee>progressimage is the only required bit and I opted to make it <imagetype> so you can do allow sorts of things with it like use an animated image etc
15:48<gbee>I tempted to resurrect the mythuitest app but updated and using a theme to demo the options and combinations for themers
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16:17<mattwire>seem to get a segfault when running the video scanner in mythfrontend
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18:03<gbee>hmm, slide effect still isn't working with the gl painter
18:05<Chutt>for the progress bar?
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18:07<gbee>yeah, optional style for the 'fill'
18:08<gbee>I just need to take a second look at DrawImage, shouldn't be hard to fix and if necessary I'll just commit it with a single 'style' for now
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18:40<gbee>TexCoord is the coordinates of the source texture taken from the image, Vertex the destination coordinates?
18:41<Chutt>should be, y es
18:43<gbee>probably time for me to invest in that opengl reading material
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18:46<Chutt>gbee, try making the texcoords to be 0.0-1.0
18:48<Chutt>based on the image width/height
18:48<gbee>that would explain what I'm seeing
18:49<Chutt>it never cropping?
18:52<gbee>no, when src x/y are > 1 then strange things happen, if x/y are zero then it works fine
18:53<danielk22>gbee: opengl has several settings for how to wrap or not wrap texture coordinates..
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19:07<gbee>Chutt: makes things much worse - there is an improvement if I adjust X1 and Y1, but the minute I change X2 and Y2 I get nothing but a grey screen :)
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19:12<Chutt>ah well
19:13<gbee>I'll play with it tomorrow
19:17<Chutt>oh, nevermind
19:18<Chutt>the width/height based dimensions are correct
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---Logclosed Thu Jul 03 00:00:12 2008