| --- | Log | opened Thu Jul 24 00:00:40 2008 |
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| 02:08 | <xris> | hmm, mythtv iphone app. wonder how many licenses that violates... (wishing I had an iphone to play with it) |
| 02:09 | <xris> | http://gizmodo.com/5028338/mythtvs-mymote-iphone-remote-app |
| 02:15 | <clever> | xris: turns the iphone into a mythtv remote? |
| 02:16 | <Chutt> | xris, shouldn't violate anything |
| 02:16 | <Chutt> | it's just a remote |
| 02:17 | <clever> | Chutt: i was thinking of making the same thing on my treo but the bluetooth code isnt compiling |
| 02:17 | <clever> | and one of the posts there mentions a treo one allready existing |
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| 02:37 | <xris> | Chutt: from what I understand, iphone licensing doesn't allow open source software... and depending on how much mythtv code was *looked* at for reference, it could be considered a gpl derrivative work |
| 02:37 | <xris> | just an interesting concept |
| 02:37 | <Chutt> | that's a weird definition of derivative work |
| 02:37 | <Chutt> | :p |
| 02:38 | <xris> | lose definition of "could be" :) |
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| 02:38 | <xris> | couldn't have the mythtv remote if you didn't have mythtv. one is derived from the other. |
| 02:39 | <xris> | would be nicer if apple just allows FOSS stuff on the iphone |
| 02:39 | <Chutt> | again, a weird definition of a derivative work |
| 02:40 | <xris> | speaking of which, it's now the top story on slashdot.. the licensing thing, not the remote app |
| 02:48 | <Chutt> | heh |
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| 09:25 | <Wobbo> | is there a UI developer channel? |
| 09:26 | <Wobbo> | simple question can't find documentation in http://www.mythtv.org/wiki/index.php/OSD_development_guide |
| 09:26 | <Wobbo> | so where do i find list of the variable used in the xml docs like: %CHANNUM% |
| 09:26 | <Wobbo> | i am looking for channel name |
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| 09:45 | <Cougar> | Wobbo: doesn't existing OSDs give you any hint? You can always read a code too ;-) |
| 09:47 | <Wobbo> | no none of theme use channel name they all use the call sign |
| 09:47 | <clever> | http://gizmodo.com/5027978/sony-sharp-hitachi-samsung-and-motorola-agree-on-amimon-whole+house-wireless-hd-standard |
| 09:48 | <clever> | how long till mythtv can send/recv on that:P |
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| 10:23 | <Wobbo> | so there is no documentation on that? |
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| 11:27 | <stuartm> | Wobbo: try "channel" |
| 11:28 | * | stuarta waves |
| 11:29 | <stuartm> | stuarta: hi, still hasn't arrived ... |
| 11:29 | <stuarta> | hmmm, will check with girly see when she posted it... |
| 11:29 | <stuartm> | at a glance I'm not sure it will work for all instances of the program_info OSD, but generally we use a programinfo map - see libs/libmythtv/programinfo.cpp ProgramInfo::ToMap() |
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| 11:33 | <Wobbo> | stuartm: "channel" is %CHANNUM% %CALLSIGN% |
| 11:35 | -!- | falstaff [n=falstaff@3-063.dsl.cyberlink.ch] has joined #mythtv |
| 11:35 | <falstaff> | Hello |
| 11:36 | <falstaff> | i would like to add some features to mythvideo. Im using Ubuntu 8.04, can i combine this with mythvideo from trunk? |
| 11:37 | <stuarta> | ubuntu != trunk |
| 11:37 | <stuartm> | %LONGCHANNEL% looks like the closest you'll get |
| 11:37 | <laga> | yeah, but ubuntu = release-21-fixes by default ;) |
| 11:37 | <falstaff> | yes i know |
| 11:37 | <stuartm> | without supplying a patch |
| 11:37 | <stuarta> | so you need to uninstall the packages from ubuntu |
| 11:37 | <stuarta> | and install svn head from source |
| 11:38 | <falstaff> | so i have to use whole mythtv from trunk? |
| 11:38 | <stuarta> | yes |
| 11:38 | <stuartm> | Wobbo: but the exact format can be changed in the settings - see ChannelFormat and LongChannelFormat |
| 11:38 | <falstaff> | i cant just compile mythvideo from trunk and use it with the packages from ubuntu? |
| 11:38 | <stuarta> | no |
| 11:39 | <stuartm> | Wobbo: Settings > TV Settings > General (first page) |
| 11:39 | <falstaff> | stuarta, Can i download mythvideo source from ubuntu and send patches to the mailing list? |
| 11:39 | <stuarta> | there is no point patching 0.21 as things are being rewritten all the time |
| 11:40 | <stuartm> | mythvideo looks a lot different right now, even trunk isn't the right version to work against |
| 11:40 | <falstaff> | stuarta, even in mythvideo? |
| 11:41 | <stuartm> | falstaff: mythvideo has changed a lot as part of the port to mythui |
| 11:41 | <falstaff> | hm ok |
| 11:41 | <falstaff> | but when trunk isnt the right version, which one is? |
| 11:41 | <stuartm> | 37 files changed, 5258 insertions(+), 10357 deletions(-) |
| 11:41 | <stuartm> | branches/mythui_mythvideo |
| 11:41 | <stuartm> | which hopefully in a week or so will be merged back to trunk |
| 11:44 | <falstaff> | okey thanks |
| 11:56 | <falstaff> | Do you develop on a virtual machine? does mythtv works on a virtual machine? It uses opengl right? |
| 11:56 | <stuarta> | it can use opengl |
| 11:56 | <stuarta> | doesn't have to |
| 11:57 | <stuarta> | it's hard to develop on a virtual machine, due to the hardware access required to capture content |
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| 12:05 | <falstaff> | from wiki: Use Myth for GUI tasks. Isaac is currently working on a UI layer that's independent of Qt, and patches that use native Qt widgets or extend the Myth wrappers around the Qt GUI will be rejected... => this is mythui right? |
| 12:07 | <stuartm> | yes |
| 12:07 | <stuartm> | although that advice is a little dated now, even the official MythUI wiki page is out of sync - http://www.mythtv.org/wiki/index.php/MythUI |
| 12:11 | <stuartm> | falstaff: what sort of features are you planning? |
| 12:11 | <falstaff> | hm small improvments... |
| 12:12 | <falstaff> | what i would like to have is something who tells me which videos are new... |
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| 12:13 | <falstaff> | so adding a "dateadded" field to videometadata and then something on the gui.. i thougt about a "faiding star", which does an alphablending, from full visible for new movies to invidible for movies older then x (x=3months..) |
| 12:14 | <stuartm> | ok, sounds good - there is a definite need to improve the metadata stored for videos, converging with what we store for recordings etc - might not be a bad idea to keep them similar in implementation so that mythvideo can be integrated into the frontend eventually using the same code |
| 12:15 | <stuartm> | star idea is nice, and easier with mythui too |
| 12:16 | -!- | stuartm is now known as gbee |
| 12:17 | <falstaff> | the video* tables are used by mythvideo only right? |
| 12:18 | <gbee> | correct |
| 12:18 | <falstaff> | When does mythvideo generate this on the database? first loading? |
| 12:18 | <gbee> | statetype maybe then themers can use whatever they want, a fading star, a traffic light image, wilting plant ;) |
| 12:19 | <gbee> | very first time it's loaded by mythfrontend as a plugin |
| 12:19 | <falstaff> | Ah okey... And how is migration done? |
| 12:19 | <falstaff> | :-) |
| 12:19 | <gbee> | database migration from one install to another? |
| 12:20 | <falstaff> | no |
| 12:20 | <falstaff> | version to version... |
| 12:21 | <gbee> | oh, well we compare a database version number in the settings table to the one hardcoded in the version you are using, then a series of statements in dbcheck.cpp are run on your database until it's updated to the same version |
| 12:22 | <gbee> | e.g http://pastebin.ca/1081963 |
| 12:23 | <gbee> | updates from version 1015 to 1016, the current version number is changed at the top of dbcheck.cpp - "const QString currentDatabaseVersion = "1018";" |
| 12:23 | <falstaff> | ah cool |
| 12:24 | <falstaff> | and this version number is for all myth* applications? |
| 12:24 | <gbee> | no, the version is unique to the plugin |
| 12:25 | <falstaff> | But settings table is from mythtv not mythvideo right? |
| 12:25 | <falstaff> | DBSchemaVer right? on my db its set to 1214 |
| 12:26 | <gbee> | no it's shared, but each plugin stores their version with a different name e.g. mythvideo.DBSchemaVer |
| 12:27 | <gbee> | DBSchemaVer is the main schema version for the frontend/backend, then each plugin has their own - GalleryDBSchemaVer, MusicDBSchemaVer |
| 12:27 | <falstaff> | ah okey |
| 12:27 | <gbee> | mythvideo seems to name it slightly differently for some reason |
| 12:28 | <falstaff> | So a new field for mythvideo leads to this changes: dbcheck.cpp, const QString currentDatabaseVersion = "1019"; and a upgradestatement like the one you sent (http://pastebin.ca/1081963) |
| 12:28 | <gbee> | correct |
| 12:30 | <falstaff> | how do you develop? any ide? |
| 12:30 | <clever> | i do most of my code tweaking with plain old vim |
| 12:31 | <stuarta> | same here |
| 12:32 | <clever> | i recently found out i can do code folding in vim:P |
| 12:32 | <clever> | helps alot |
| 12:33 | <Wobbo> | stuartm: thanks |
| 12:38 | <falstaff> | i like vim :-) |
| 12:40 | <falstaff> | It leads to reading the framework documentations... which is never wrong :-) |
| 12:41 | <falstaff> | mythui_mythvideo is built by the makefile from mythtv trunk right? |
| 12:43 | <gbee> | yeah |
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| 12:47 | <gbee> | probably should have made it a full branch of trunk, but I didn't so .. |
| 12:52 | <sphery_> | falstaff: just a quick mention, though most video* tables are MythVideo, videosource is mythtv. I think Anduin had ideas for changing table names, so if you're doing a /lot/ of changes, might want to talk to him. |
| 12:55 | <Anduin> | I just like easily identifiable (why new mythvideo settings have mythvideo. before them), videosource is easy enough to remember that videotablename is unique enough for me. |
| 12:57 | <danielk22> | stuarta: Do you use MHEG at all? MHIContext needs to be converted to use QPainterPath instead of Q3PointArray... |
| 12:57 | <Anduin> | (though at one point I did consider changing all mythvideo tables to be more like mythmusic, with video_) |
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| 13:07 | <stuarta> | danielk22: i generally have it turned off, but it's easy enough to turn it on for testing |
| 13:10 | <danielk22> | It might be possible to just rewrite ::makeEllipse() if the conversion is difficult otherwise. |
| 13:10 | <danielk22> | I'm trying to eliminate as much Qt3 stuff in libmythtv as possible. |
| 13:11 | <stuarta> | would you like me to take a look? |
| 13:11 | <danielk22> | I'd love it :) |
| 13:11 | <stuarta> | nothing like the deep end theory |
| 13:11 | <danielk22> | http://doc.trolltech.com/4.4/porting4.html#qpointarray |
| 13:11 | <stuarta> | cheers. i'm gunna need that |
| 13:17 | <stuarta> | UI101 - The basics of porting from qt3->qt4 |
| 13:17 | * | stuarta enrolls |
| 13:19 | * | gbee graduated already |
| 13:20 | <stuarta> | you are already doing your masters |
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| 13:22 | <gbee> | I need a tree class in libmythui and I'm thinking of lifting GenericTree from libmyth, anyone want a copy to remain available in libmyth for non-ui purposes? |
| 13:28 | <danielk22> | it's used for the OSD stuff.. still UI, but not MythUI |
| 13:28 | <stuarta> | QObject: Do not delete object, 'unnamed', during its event handler! |
| 13:28 | <stuarta> | well that's nice |
| 13:31 | <gbee> | danielk22: my grepping missed that, or rather I saw OSDGenericTree but didn't see it's connection to GenericTree - I can't remove the libmyth version immediately even if I wanted to since some unconverted plugins/screens still depend on it |
| 13:31 | <gbee> | I'll use a renamed copy for now |
| 13:32 | <gbee> | stuarta: yeah, I'm seeing that two/three times on startup |
| 13:32 | <gbee> | doesn't help that the object hasn't been given a name :) |
| 13:35 | <stuarta> | wonder if there's a way of naming it based upon it's parent name |
| 13:36 | <stuarta> | man there is some crap on that satellit |
| 13:36 | <stuarta> | e |
| 13:36 | <gbee> | heh |
| 13:37 | <stuarta> | ooo. i found african soccer! |
| 13:37 | <gbee> | supposed to be some more channels getting EIT soon |
| 13:37 | <stuarta> | 55113 |
| 13:38 | <gbee> | and the FTA launch of Five |
| 13:38 | <stuarta> | \o/ |
| 13:39 | <gbee> | http://www.digitalspy.co.uk/digitaltv/a113857/freesat-adding-18-channels-radio-stations.html?rss http://www.digitalspy.co.uk/digitaltv/a114783/five-cleared-for-freesat-launch.html?rss |
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| 13:42 | <stuarta> | hmmm, luxe tv hd (54206) gives me the following |
| 13:42 | <stuarta> | [h264 @ 0x7fa209d17f30]illegal aspect ratio |
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| 14:04 | <MrGandalf> | stuarta: uh oh, police are coming now.. though that's not as bad as an illegal instruction I hear. |
| 14:04 | <gbee> | stuarta: it works though? |
| 14:04 | <stuarta> | stutters |
| 14:04 | <gbee> | :( |
| 14:04 | <stuarta> | but so does most HD on this box |
| 14:05 | <gbee> | plays smoothly for me with the skiploop patch |
| 14:05 | <stuarta> | may need to try that someday |
| 14:07 | <stuarta> | some eitfixup work needed on 52361 atm |
| 14:09 | <stuarta> | i am just wondering down the channel list before anyone accuses me of looking at *really* crap channels |
| 14:09 | <stuarta> | wandering even |
| 14:10 | <gbee> | :) |
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| 14:37 | <stuarta> | when this happens -> " Waited too long for decoder to pause" we need to do something other than wait |
| 14:37 | <stuarta> | even accepting input would be nice |
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| 14:48 | <MrGandalf> | can someone explain this "skiploop" patch? I heard something about it on the ffmpeg-devel list as well. |
| 14:52 | <gbee> | disables a cpu intensive de-blocking filter on the h.264 decoder, it's need for some streams but generally not for high quality broadcast stuff like the BBC |
| 14:53 | <MrGandalf> | ah, ok.. different than what's being talked about on the list then |
| 14:53 | <MrGandalf> | thanks |
| 14:53 | <gbee> | disabling it reduces the CPU requirements for AVC with ffmpeg |
| 14:53 | <MrGandalf> | coreavc as well I believe |
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| 14:53 | <gbee> | not by much, but enough for some |
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| 14:54 | <gbee> | coreavc allows it to be disabled as well, but the mythtv patch in question only works for ffmpeg |
| 14:54 | <MrGandalf> | yes |
| 14:57 | <gbee> | stuarta: there are a couple of conditions where we get 'stuck', that's one and I agree we need to accept input and even reduce the number of loops before give up |
| 14:57 | <stuarta> | glad i'm not the only one |
| 15:12 | <gbee> | fixing some of the underlying causes wouldn't hurt either, I'm not sure that the decoder hasn't paused when we print that error |
| 15:13 | <stuarta> | it is however definitely stuck |
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| 15:54 | * | stuarta suspects converting MHEG to QT4 isn't a 1hr job |
| 15:55 | <danielk22> | stuarta: just convert that one thing, I've already done the rest here. |
| 15:56 | <gbee> | I'm happy to test any patches |
| 15:56 | <stuarta> | if you don't hear of success by the end of the night, assume i didn't get it done |
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| 15:58 | <gbee> | not personally in the mood to do any work tonight, aside from testing patches |
| 15:59 | <gbee> | I need this one last widget for mythui before I can put the mythvideo port to bed, but it will have to wait |
| 16:00 | <stuarta> | it appears it's only used in MHIDLA::DrawOval, MHIDLA::DrawArcSector, MHIDLA::DrawPoly and that is it |
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| 16:00 | <stuarta> | danielk22: that all you after? |
| 16:01 | <danielk22> | QPainterPath instead of Q3PointArray in MHIContext |
| 16:02 | <danielk22> | for the ellipse at least |
| 16:05 | <stuarta> | which file are you looking at libs/libmythtv/mhi.[h|cpp] ? |
| 16:05 | <danielk22> | yup |
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| 16:41 | <stuarta> | anyone else's frontend take ages to shutdown (svn head) |
| 16:41 | <gbee> | been that way ever since the move to QT4, starts faster but takes ages to exit |
| 16:42 | <danielk22> | takes ages to fire up gdb on a coredump too |
| 16:42 | <stuarta> | never seen it take soooooo long |
| 16:42 | <gbee> | :( conflicts between the mythvideo branch and trunk |
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| 16:48 | <stuarta> | looks like mheg is borked in head |
| 16:48 | <gbee> | really? |
| 16:49 | <stuarta> | i don't get any of the background colours |
| 16:49 | <stuarta> | can't actually compare to 0.21 atm since it's busy recording on the wrong mux :( |
| 17:00 | <gbee> | mine's recording too, on all tuners - I'll check tomorrow |
| 17:08 | <stuarta> | unless i'm reading this wrong i just found a bug |
| 17:08 | <stuarta> | args to putPoints are arse about |
| 17:08 | <stuarta> | at mhi.cpp 1266 |
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| 17:19 | <stuarta> | yup the mheg's definitely screwed in head, and working in 0.21 |
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| 17:54 | <gbee> | it would probably have to be QT4 related, but I wouldn't know where to start looking |
| 17:57 | <stuarta> | probably due to the qt3 compat classes being not quite up to scratch |
| 17:57 | <stuarta> | making progress |
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| 17:58 | <stuarta> | up to the hard bit now |
| 18:03 | <Chutt> | if you're touching the mheg library |
| 18:03 | <Chutt> | would it be hard to port to qt4? |
| 18:04 | <gbee> | that's what he and Daniel are doing |
| 18:04 | <stuarta> | that's what i'm attempting :) |
| 18:04 | <Chutt> | ah, excellent |
| 18:04 | <Chutt> | i looked at that briefly |
| 18:04 | <Chutt> | but decided i couldn't test it so didn't =) |
| 18:04 | <stuarta> | i'm currently enrolled in UI101, the basics of qt3 -> qt4 conversion :) |
| 18:04 | <gbee> | in the process noticing that it's currently a little broken since the initial QT4 port |
| 18:04 | <stuarta> | yup |
| 18:06 | <gbee> | Chutt: thinking of copying GenericTree to mythui as the basis of the tree widget, does this fit with what you had in mind? |
| 18:06 | <Chutt> | yes |
| 18:06 | <Chutt> | unless there's something better in qt4 |
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| 18:08 | <gbee> | I've had a quick look, mostly browsing the list of classes for anything that has tree in the name ;) but only things I found were complete widgets, no generic tree stuff |
| 18:08 | <Chutt> | i thought they were more model/view type stuff now |
| 18:08 | <Chutt> | maybe not |
| 18:10 | <gbee> | http://doc.trolltech.com/4.3/qtreeview.html |
| 18:10 | <gbee> | and the more specific - http://doc.trolltech.com/4.0/qtreewidget.html |
| 18:12 | <gbee> | neither fits what I was looking for, but generic tree works well enough and it's already used for mythvideo/mythmusic etc so that simplifies things - I can drop their trees direct into the widget |
| 18:13 | <gbee> | SetTree(GenericTree video_list); - that sort of thing |
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| 18:18 | <stuarta> | what i'm trying to work out is why it does down to such a low level |
| 18:19 | <stuarta> | it appears to draw things point by point, line by line |
| 18:23 | <gbee> | coords use less bandwidth than images? |
| 18:23 | <stuarta> | dunno. |
| 18:24 | <stuarta> | seems to talk a lot about compositing an image and then alpha blending it |
| 18:24 | <gbee> | hmm, no idea |
| 18:26 | <stuarta> | it's building a QImage pixel by pixel |
| 18:29 | <gbee> | using vector based drawing makes a lot of sense for the bulk of what mheg does, since it scales well and like I said uses a lot less bandwidth, but that doesn't mean we're drawing it as efficiently as we can |
| 18:29 | <stuarta> | undoubtly not |
| 18:29 | <gbee> | but I really would have to defer to Dave Matthews on this |
| 18:29 | <stuarta> | i'm sensing i've opened a can of worms |
| 18:30 | <stuarta> | it seems the MHEG does describe stuff as vector graphics |
| 18:30 | <danielk22> | It doesn't need to be super efficient... |
| 18:30 | <stuarta> | step 1. make work :) |
| 18:30 | <danielk22> | it has vector graphics + videos |
| 18:30 | <stuarta> | step 2+. make work fast |
| 18:30 | <gbee> | and non vector graphics, for logos etc |
| 18:30 | <stuarta> | they are bitmaps |
| 18:31 | <gbee> | danielk22: no it doesn't have to be super efficient because once drawn those images are cached - though I'd like to see disk based caching too since it's very slow to initially load and draw when entering livetv |
| 18:32 | <gbee> | most of the artwork doesn't change, so it could be cached to disk and loaded much faster |
| 18:32 | <falstaff> | what is mheg? |
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| 18:32 | <stuarta> | that interactive tv crap |
| 18:32 | <gbee> | similar to MHP used in Europe? |
| 18:32 | <falstaff> | hm, we dont have this in europe right? |
| 18:33 | <stuarta> | similar |
| 18:33 | <stuarta> | tho MHP is basically java |
| 18:33 | <falstaff> | MHP=MHEG? |
| 18:33 | <stuarta> | or javascript |
| 18:33 | <stuarta> | no |
| 18:33 | <stuarta> | they aren't the same |
| 18:34 | <danielk22> | They don't really have any of this in the US. The standard exists, but no one implements it. sort of like teletext in the US :) |
| 18:34 | <gbee> | it's a little similar to teletext but much updated and improved, used in the UK and NZ instead of teletext for digital tv |
| 18:36 | <hads> | It's annoying to parse EPG out of too. |
| 18:36 | <stuarta> | thats the understatement of the century |
| 18:37 | <hads> | We (NZ) have DVB-S which has the standard EIT stream and DVB-T which only has MHEG. |
| 18:37 | <stuarta> | ew |
| 18:38 | * | stuarta sp0rks NZ dvb-t |
| 18:38 | <hads> | Yah. They don't even broadcast DVB-T where I am so I don't get to play with it. Although the MHEG stream is in the DVB-S too. |
| 18:38 | <hads> | HD is only broadcast on DVB-T |
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| 18:51 | <falstaff> | good nigh |
| 18:51 | <falstaff> | t |
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| 19:21 | <Chutt> | danielk22, for your qt3 removal patch, careful of the autodelete feature of q3ptrlist |
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| 19:26 | <gbee> | or the lack of it in qt4 |
| 19:26 | <Chutt> | nevermind, looks like it's mostly gone |
| 19:26 | <Chutt> | this is just removing the Q3 classes, though |
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| 19:37 | <stuarta> | well it's no worse |
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| 19:42 | <stuarta> | i can safely say i've made it no worse |
| 19:42 | <stuarta> | it's however still completely broken |
| 19:49 | <danielk22> | chutt: yup, that seemed to be one of the main reason people were using the Qt 3 containers. |
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| 19:50 | <stuarta> | QRasterPaintEngine::begin: Unsupported image format (3) |
| 19:51 | <stuarta> | hmpf |
| 19:52 | <stuarta> | eh? "Note that this functionality is only available in Qt for Embedded Linux" |
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| 20:01 | <danielk22> | methinks they got a little crazy with 'cruft removal' in Qt4 :) |
| 20:04 | <gbee> | I think someone summed it up nicely when they called it busy work, "So we have to create a new version of QT and make it look like we've done enough work to convince paying customers to upgrade, what can we do?" |
| 20:06 | <gbee> | Cue worker bees renaming a whole bunch of methods and classes for no particular reason |
| 20:08 | <stuarta> | that sums it up |
| 20:15 | <stuarta> | nn all |
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| 20:44 | <susanna777> | hello i have a question about myth tv |
| 20:44 | <susanna777> | hmm... i think i'm on the wrong room |
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| 21:54 | <danielk22> | Does anyone know what it is that makes Q3SocketDevice work under Qt4, or why a QUdpSocket replacement wouldn't work in Qt4? Does the class need to be created in a special thread, something else? |
| 21:55 | <danielk22> | Some GlobalFunctionQt4InitNetwork() needs to be called? |
| 21:57 | <clever> | danielk22: ive got it sending signals just fine in the example app the docs provide |
| 21:57 | <clever> | but i cant get it to do the same in mythtv |
| 21:57 | <clever> | i made a patch to check it for data in the event loop of that thread |
| 21:57 | <clever> | basicaly polling it |
| 21:57 | <danielk22> | have you tried doing a "new QUdpSocket()" inside the pthread thread? |
| 21:58 | <clever> | i beleive thats what it is doing |
| 21:58 | <danielk22> | clever: you patched Qt's event loop? |
| 21:59 | <clever> | qsd = new QUdpSocket(this); |
| 21:59 | <clever> | no i patched the custom mythtv event loop |
| 21:59 | <danielk22> | which one? |
| 21:59 | <clever> | that thread isnt using the qt event loop |
| 21:59 | <clever> | i allready posted the patch |
| 22:00 | <danielk22> | ticket# ? |
| 22:00 | <danielk22> | Anyway, so you didn't figure out what was wrong? |
| 22:00 | <clever> | nope but i managed to fix it anyway |
| 22:00 | <clever> | just bypassing the whole signal system |
| 22:01 | <danielk22> | Well if we can't get the signal system to work, I wonder if it's worth it to use the Qt classes at all for this. |
| 22:01 | <clever> | it still makes the stuff simple |
| 22:01 | <clever> | i find |
| 22:01 | <danielk22> | It seems like we're just asking for trouble using a half broken networking system. |
| 22:02 | <danielk22> | What if a different parts are broken on different platforms? |
| 22:02 | <danielk22> | Then we end up writing the posix socket code anyway. |
| 22:03 | <clever> | http://svn.mythtv.org/trac/ticket/5281 |
| 22:03 | <danielk22> | Which is probably more maintainable in the long run anyway by different programmers. |
| 22:03 | <clever> | i only made a few small tweaks and got it working |
| 22:03 | <clever> | some of them i didnt even need to do |
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| 22:04 | <clever> | parts are leftover from trying to fix the signals |
| 22:07 | <danielk22> | Hmmm, it probably is the QThread thing ... All you are doing is emulating what the Qt event loop should be doing. |
| 22:08 | <danielk22> | thx |
| 22:08 | <clever> | some1 else tried giving it its own private qthread |
| 22:08 | <clever> | and it still refused to sendsignals:P |
| 22:08 | <clever> | but with the help of #qt i got it working |
| 22:09 | <clever> | the guy helping me found his own way into trac and dug thru other files to see where the event loop was |
| 22:09 | <clever> | and i couldnt even figured out where the thread was created |
| 22:15 | <danielk22> | heh, I think I'll just rewrite it to use polling.. I want to rewrite it to be thread-safe anyway. |
| 22:16 | <clever> | a lock or 2 arround my patch would probly do that |
| 22:16 | <clever> | if you cant get the lock just skip the socket |
| 22:16 | <clever> | the event loop repeats enough i suspect |
| 22:17 | <clever> | it feels like something thats repeated every frame |
| 22:17 | <clever> | from where it is in the code |
| 22:20 | <clever> | bbl sleep |
| 22:22 | <Chutt> | no polling |
| 22:23 | <danielk22> | chutt: it's blocking |
| 22:23 | <Chutt> | danielk22, all we need to do is change the TV play event loop to be a QThread that runs its own Qt event loop |
| 22:23 | <Chutt> | then hook up the signals from the udpsocket thingie |
| 22:23 | <Chutt> | ie, change the current event loop to be a timer or whatnot |
| 22:24 | <Chutt> | i had started doing that, but got interrupted by work |
| 22:24 | <danielk22> | how far along where you? |
| 22:24 | <Chutt> | not far enough |
| 22:24 | <Chutt> | it'd also fix all those timers you changed back on the original port =) |
| 22:25 | <danielk22> | :) |
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| 22:25 | <Chutt> | it's the right way to do things, i think |
| 22:25 | <Chutt> | also a bit cleaner |
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| 22:31 | <danielk22> | k, it looks like new UDPNotify is always called from the RunTV() thread. So that might work... |
| 22:32 | <danielk22> | now how does one start up a thread specific Qt event loop, any URL handy? |
| 22:33 | -!- | SqWaw [n=nnscript@ool-4575bab5.dyn.optonline.net] has joined #mythtv |
| 22:34 | <danielk22> | ah, QThread::exec(); |
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| 23:16 | <danielk22> | heh, it works. Proof of concept patch on #5281. :) |
| 23:17 | -!- | danielk22 is now known as danielk_Zzzzzz |
| 23:17 | <Chutt> | cool. |
| 23:18 | <Chutt> | it may be easier to make TV just inherit QThread |
| 23:18 | <danielk_Zzzzzz> | Yeah, it seems a little snappier too. But I think that's just the event loop lost some of it's QWaitCondition functionality in the Qt4 port.. |
| 23:19 | <danielk_Zzzzzz> | Yeah, I just wanted to test the concept quickly, I'd like to make the other threads also use QThread if possible. And they can't all own the TV class :) |
| 23:20 | <danielk_Zzzzzz> | I dunno if Qt handles real time threads though. |
| 23:20 | <Chutt> | it does have thread priority stuff |
| 23:20 | <Chutt> | but not the same realtime |
| 23:20 | <Chutt> | i have a partial patch where i started libmythtv attached to a ticket somewhere |
| 23:20 | <Chutt> | didn't get too far :/ |
| 23:21 | <Chutt> | did the recorder, though |
| 23:21 | <danielk_Zzzzzz> | Is there any documentation on how their priorities map to OS priorities? |
| 23:21 | <Chutt> | no |
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| 23:21 | <Chutt> | but the source just queries the highest and lowest priority from pthreads |
| 23:21 | <Chutt> | and maps the Qt range to that |
| 23:22 | <Chutt> | i was thinking of just dumping the realtime stuff |
| 23:22 | <Chutt> | never liked that |
| 23:22 | <danielk_Zzzzzz> | So TimeCritialPriority would just be -19 ? |
| 23:22 | <danielk_Zzzzzz> | instead of -50 or whatever real time is? |
| 23:23 | <Chutt> | one sec |
| 23:24 | <Chutt> | hrm |
| 23:24 | <Chutt> | it calls sched_get_priority_min/max() |
| 23:24 | <Chutt> | with 'policy' gotten from a call to pthread_getschedparam() |
| 23:25 | <Chutt> | or pthread_attr_getschedpolicy |
| 23:26 | <Chutt> | looks like those _can_ include SCHED_FIFO, but i don't know if they will |
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| 23:27 | <Chutt> | realtime threads are really just poor bandaids, though |
| 23:28 | <danielk_Zzzzzz> | yeah, I don't run with em, but they do make the difference for some people. |
| 23:28 | <danielk_Zzzzzz> | anyway, gotta go to bed soon. |
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| --- | Log | closed Fri Jul 25 00:00:09 2008 |