IRC log of #maemo for Tuesday, 2015-11-24

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DocScrutinizer05Oksana: afaik omap3430-dsp-libraries-ti only supports H.263/264_low-profile - see >>IVA™ 2+ (Image Video Audio) accelerator enables multi-standard (MPEG4, WMV9, RealVideo, H263, H264) encode/decode at D1 (720x480 pixels) 30 fps, and up to 720p resolutions<<00:06
DocScrutinizer05so >><Oksanaa> Maybe, too high resolution? 1000<< yes, definitely00:07
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DocScrutinizer05btw H.26(3/4) are encumbered by software patents according to wikipedia. Which gives a hint why Nokia would not have included any codecs for it that are not shipped by TI already00:19
OksanaHmm... I heard about 1080p playback support somewhere? But anyway, display is only 800x480, so I should try a different resolution, I guess00:21
Sicelo009Nwe never had 1080p00:24
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jon_yobviously we need to push it by supporting h265 playback :)00:28
jon_yseriously though h265 compression is pretty insane00:28
jon_ywhile somehow still maintaining crisp quality00:28
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DocScrutinizer05Oksana: yes, a transcoder proxy would be a very handy thing01:03
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klopsi-u3Oksana: cpu is already at limit with 800x480 afaik03:53
klopsi-u3oops stuck in scrollback03:53
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tiwakeDocScrutinizer05: cellphone is happily running now08:19
tiwakecheers :308:19
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tiwake(as apposed to before the reflashing)08:19
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salamisamiKotCzarny: How exactly does the volume control work in oscp11:39
salamisamichanging the volume seems to have no effect11:40
KotCzarnysalamisami: it uses softvol, it doesnt touch system volume11:40
KotCzarnymight be bugged because lately i've added libav resampler which might skip softvol in oscp11:40
KotCzarnythx for reminding me11:41
KotCzarnyuntil i upload the fix you can just click status bar near the clock and change system volume11:42
salamisaminot that straightforward with ssh :P11:46
KotCzarnystill, its a bug, and i've added it to the TODO11:46
salamisamiright, good to know11:47
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Sicelo009Nsoftvol means? how does one adjust it?12:03
KotCzarnysicelo, softvol means every sample is multiplied by some float by oscp, and that float is changeable by user (via -/= keys or clicking on vol bar)12:03
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jonwilfreemangordon: ping12:06
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salamisamiKotCzarny: oscp stops playing after a track finishes13:37
salamisamihave to manually start new one13:37
salamisamiit gets stuck loading next one13:37
salamisamior did i press a wrong button?13:37
KotCzarnyhmm, mp3 ?13:38
KotCzarnywhat happens if you press ']' (default next track button i think)13:38
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salamisamithis seems to only be a problem with certain files on my playlist13:39
KotCzarnycan you upload any of them somewhere?13:40
salamisamii got them by using mp3fiber to download them from youtube since i couldnt find them elsewhere13:40
KotCzarnyofftopic, use youtube audio/video downloader for firefox13:41
KotCzarnyit allows to download audio tracks of youtube clips easily and with selectable qulity13:41
Sicelo009Nor cutecube2 on your N90013:42
KotCzarnyand note that oscp can play webm/mp4/m4a/ogg/opus etc13:43
KotCzarnyso no need to reencode to mp313:43
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jonwil~seen pali15:14
infobotpali <~pali@Maemo/community/contributor/Pali> was last seen on IRC in channel #neo900, 20d 13h 41m 47s ago, saying: 'campaign for what?'.15:14
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Sicelosomething went haywire with my N900 .. would connect successfully with my home network, but not be able to send/receive data. in the end a modprobe -r wl12xx helped. weird18:03
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DocScrutinizer05almost normal18:21
DocScrutinizer05anyway thanks for the modprobe hack18:23
DocScrutinizer05I every once in a while notice WLAN locking up when walking out of range of an associated AP18:23
DocScrutinizer05it seems to desperately try to reconnect to the no longer available AP and never check for new ones, neither switch to other connectivity channels i.e. GPRS18:25
bencohI guess disabling/enabling wireless from the status-menu would work as well18:25
Siceloif you have the applet :) stock does not have enable/disable wireless on status menu18:26
KotCzarnyit has 'select new connection'18:27
KotCzarnyand there it has 'disconnect connection'18:27
KotCzarnyand i think disconnecting from wifi disables it (if you dont have search for networks enabled)18:28
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Sicelowell, that didn't help18:29
DocScrutinizer05airplane mode18:29
bencohKotCzarny: as far as I can tell, no, it doesnt18:29
KotCzarnyanyway, never got that symptoms so i cant check18:30
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jonwilok, that's about as much of module-nokia-voice as I can do at this point :)18:38
jonwilnow I need freemangordon :)18:38
jonwilor some other RE guru if one exists in this community :)18:38
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sixwheeledbeastMy N900 had the WLAN lock up for the first time this week in a similar way. Very odd.19:15
freemangordonjonwil: hmm?19:15
freemangordonoh , the voice module :)19:15
jonwilI have done all I can at this point19:16
jonwilthe other functions (see status.txt) all have things that I cant seem to figure out19:16
freemangordonWOW, great amount of work on your side19:16
jonwilyeah, I did a lot :)19:18
jonwilneed to do something more in regards to xprot temperature.c but to do that I need to pull in libbmeipc-dev and I cant seem to do that since scratchbox doesnt have kernel-battery-blah or whatever libbmeipc0 from pali wants19:19
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ceenewhere can i take a look at your job, jonwil?19:23
jonwil is the current pulseaudio-nokia tree19:24
jonwilanyhow, I have done all I can, time for zzz :)19:27
jonwilhopefully Freemangordon can pick it up from here and do some more stuff :)19:27
jonwilcya guys19:28
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Wizzupfreemangordon: what was the latest pali/mainline kernel that worked with ofono (or with maemo) for you19:55
Wizzupcall wise - I mean19:56
WizzupI have 4.1.0-rc4+ (Pali's branch) and I cannot get ofono to work yet19:56
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DocScrutinizer05re xprot I suspect it's quite a bit overengineered. I honestly doubt you need to ask BME(!!) about any temperature to determine whatever XPROT does to protect the speakers20:26
DocScrutinizer05or would the IHF audio shut down when battery gets too hot? to protect battery from discharge-induced overheating?20:28
KotCzarnymore like glue on speakers getting hot20:28
KotCzarny(and thats why it has to limit displacement more)20:28
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Sicelocouldn't they have just used better speakers or something? sounds like the speakers inspired convoluted systems21:17
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freemangordonWizzup: never tried to make phone calls with mainline kernel, and for GPRS I used what is in maemo (csd or whatever)21:27
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freemangordonDocScrutinizer05: or most-probably they have had the same/similar problem with some other device and just reused the code21:27
bencohfreemangordon: did you see anything ""relevant"" in xprot?21:29
freemangordon"relevant" as in?21:30
bencohany function that seems to do something "useful"21:31
bencohand/or that we understand21:31
freemangordonwell, the thing xprot does is a HPF21:31
KotCzarnyfmg, isnt its more than that?21:32
Wizzupfreemangordon: right, so not ofono. well regardless, currently I don't get working gprs (problems in kernel modules)21:32
KotCzarnyie. limiting cone displacement is not only hpf21:32
bencohfreemangordon: highpass filter?21:34
freemangordonKotCzarny: well, I didn't done thorough analysis of what xprot does, but check pngs in
bencohhaha, my browser marks the two jpeg links as "already visited" :-)21:35
freemangordonbencoh: yes, highpass filter21:35
infobotxprot is, like, and
freemangordonKotCzarny: is the input, - the output21:36
bencohhmm, I guess the speaker response curve is the opposite/inverse, or I dont see how we're supposed to listen to music with that21:36
bencoh(unless speakers were never meant to listen to music)21:36
freemangordonKotCzarny: or you can take the 2 raw files and do whatever analysis you want :)21:36
freemangordonbencoh: wait, why?21:37
KotCzarnyWhat is xprot displacement?21:37
KotCzarnyXProt displacement - don't remember. Something about the speaker coil safe traversal probably.21:38
KotCzarnyfor some reason they mantion it and not a simple hpf21:38
bencohwait, xprot.png is input?21:38
freemangordonsure, this is not a simple hpf21:38
freemangordonbut functions similarly to21:38
KotCzarnywould be meaningful to draw sines/triangles before/after xprot?21:39
KotCzarnymaybe square waveforms too21:39
freemangordonsines doesn't make sense21:39
freemangordonsquares might make sense, but still, I expect output similar to that of an HFP21:40
freemangordonalso, there is a controlled gain, I guess based on the predicted coil temp21:40
bencohisn't it more of a bandpass if the two pictures are input/output?21:41
bencohcentered around ... 1k-2k?21:41
freemangordonyeah, why not :)21:41
freemangordonbut see the input dB21:42
bencohjust "enhancing" human voice21:42
bencoh(well, more amplifying than enhancing)21:42
KotCzarnymore like constant filter up to ~800hz, then linear catch up to no-filter at 2khz21:42
bencohfreemangordon: what about it?21:43
KotCzarnybencoh, look at the scale21:43
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KotCzarnyat 2khz they both are -30db21:43
freemangordonalso, we don;t know the electro-acoustic parameters of the speakers and their case, so we don;t really know what is the real output21:43
KotCzarnyalso, if you manage to find speakers that fit with almost no hacking into n900 that are without the flaw, it would be cool21:45
freemangordonButterworth filter?21:45
freemangordonbut I don;t have the phase response to judge with certainty21:47
freemangordonnot to say it was a while I was student :D21:47
KotCzarnyif you keep learning, you just go on a self-directed student program21:48
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freemangordonthe point is that I knew lot of this stuff (analog/digital filters, freq/phase diagrams, poles, etc, etc), but seems I have forgotten most of it21:50
DocScrutinizer05freemangordon: ((most-probably they have had the same/similar problem with some other device)) hardly, iirc they developed XPROT in a hurry while delaying shipping of N900 since they found out "the speakers will break on your device, and you don't want that to happen. So please stay patient until we deliver the fixed device to you" <quote Nokia hotline to me>21:51
bencohI hope we'll be able to build a make a brain snapshot someday21:51
bencoh(not really hoping, but .... that'd be cool)21:51
KotCzarnybencoh, pray that we will not21:52
KotCzarnyotherwise humans will get annihilated21:52
freemangordonDocScrutinizer05: could be, who knows. but still, I think the filter code and coil temp prediction was borrowed from somewhere else and just adopted21:53
DocScrutinizer05that's possible, and they used an academic model that counts in irrelevant environment 'variables' like "ambient temperature" from BME21:54
freemangordonmy point exactly21:54
bencohthe only feedback it gets is temperature?21:57
DocScrutinizer05bencoh: ((isn't it more of a bandpass)) no, it's a highpass that cuts below some 800(?)Hz and finally applies linear attenuation below 400(?) HZ21:57
freemangordonbencoh: there is no feedback21:58
DocScrutinizer05freemangordon: ^^^, using white noise instead of pink noise would yield more legible diagrams21:58
bencohthen I really dont understand21:58
bencoh+1 for the white noise21:58
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freemangordonDocScrutinizer05: iirc it was you who wanted freq response diagram for pink noise :D21:59
DocScrutinizer05bencoh: just tilt your head 45° to the right before watching both diagrams21:59
DocScrutinizer05freemangordon: yes, but *I* can read it ;-)22:00
freemangordonthat's why I provided it, for you to read it :P22:00
DocScrutinizer05and pink noise is way more 'natural' so any dinamic parameters in XPROT will adjust to more natural usual values with pink22:01
DocScrutinizer05freemangordon: for bencoh you could provide a drived plot: $output - $input22:02
freemangordonor he can just grab those 2 .raw files and feed audacity with them ;)22:02
DocScrutinizer05logarithmic X and Y scale22:02
KotCzarnyand then drop the base22:03
freemangordonand he can even feed matlab with the data to recover the transfer function :D22:03
KotCzarnyi dont remember which freq pattern resulted in constant cone displacement22:03
KotCzarnymaybe feed some signal with non zero dc?22:04
DocScrutinizer05bencoh: the filter has a __/'''''''''' characteristic, with __ being some -20dB or whatever, and "/" between ~400 and ~800Hz22:04
bencohDocScrutinizer05: :-))22:04
DocScrutinizer05bencoh: in "output" draw a line on left  "\"  and a parallel line on right "\" you then consider the right line to be the X-axis with a Y of 0dB22:06
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DocScrutinizer05laymen's plot analysis22:06
bencohDocScrutinizer05: riiight, but as freemangordon said I'd prolly rather go through the audacity process :)22:07
DocScrutinizer05oops, the two corner frequencies are 2000Hz (upper) and ~750Hz (lower)22:08
DocScrutinizer05for the "/" section of the filter22:08
DocScrutinizer05below 750Hz it applies a constant attenuation of around -6dB22:09
freemangordonbencoh: input is 32bit, output is 16bit. IIRC22:10
DocScrutinizer05with this particular input parameters like volume, coil temperature etc22:10
freemangordonor input is stereo 16bit, output is mono22:10
freemangordonleft channel only22:10
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DocScrutinizer05it would be way more interesting to test burst impulse response over time or volume sweep over time, e.g. for an input consisting of a 5 seconds pink noise +6dB burst or a input sweep from -infinity to +9dB over a 20s22:16
DocScrutinizer05and then all the way back during next 20s22:16
DocScrutinizer05and have the output plotted as 3D-graph22:16
DocScrutinizer05or as color map, or whatever22:17
DocScrutinizer05X:time Y:freq Z:amplitude22:17
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freemangordonyeah, that should reveal how HFP is tuned with input volume and freq22:17
KotCzarnyand temperature!22:17
freemangordonand temperature... which is never close to the reality :D22:18
KotCzarnyhotairstation to the rescue22:18
bencohKotCzarny: I dont really think we need to test that on a real device :p22:19
freemangordontest what?22:21
freemangordonwe can't measure coil temp22:21
KotCzarnyi wonder what would happen to the audio when fake bme would report 100C22:22
freemangordoniirc I tested various temperatures (fake), don;t recall something spectacular22:23
freemangordonKotCzarny: but I can provide the code I used to test xprot, if someone is interested22:24
DocScrutinizer05ohmy, are people going to TEST an irrelevant parameter like ambient temperature now?22:25
DocScrutinizer05I suggest to completely kick out the temperature parameter and replace it by a constant of 55°C22:26
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erlehmannis anyone working on the telepathy stuff?22:53
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SiceloDocScrutinizer05: how much do you think shipping an N900 from Germany to South Africa would cost? rough estimate?23:04
erlehmannrtcom-messaging-ui seems weird23:17
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klopsi-u3Sicelo: the german n900s don't have 4 arrow keys23:22
Sicelostill an N900 :)23:30
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Sicelooh god! so i'm in zone 4 .. that means EUR41.99?23:35
erlehmannhow can i get the source for telepathy-gabble?23:37
Siceloerlehmann: apt? what is weird with messaging ui btw?23:38
erlehmannSicelo it is written in html and js23:38
DocScrutinizer05Sicelo: ^^^23:39
erlehmannSicelo how do i get the source with apt?23:40
erlehmann>  504 Host lookup failed: Host not found23:40
Sicelothanks DocScrutinizer05. seems much more reasonable. the N900 is from someone who does not need it anymore .. he's willing to give it to me for free (sans shipping), if no one else comes up with a price23:42
erlehmanni want to make rtcom-messaging-ui show images in xmpp messages. can someone help me where to start?23:43
erlehmannor is there an xmpp client that can do images in xmpp messages?23:43
Siceloneedless to say, i wish no one makes an offer, haha :D23:43
erlehmannlel why23:43
Sicelothen i get it23:44
erlehmanni understand. what about message receipts?23:44
Siceloerlehmann: i think Pali fixed your MUC stuff? so he should know more .. and since he was able to fix it, i surmise that source is available. try `apt-get source rtcom....`23:44
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DocScrutinizer05for scripting languages like HTML (incl JS) it seems to me the program is the source23:47
DocScrutinizer05well, almost23:49
erlehmannDocScrutinizer05 the point is that i want to patch telepathy-gabble and have no idea where to start23:50
erlehmannlike where do i get the current source for maemo gabble?23:50
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erlehmannused this
erlehmanni was like „apt-get source telepathy-gabble“23:54
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Fulltuxyou can ddl the tar.gz

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