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Riding horses, hacking computers, phones and smartwatch.
pavel

Pavel Machek

Autofocus with #libcamera is fun. You are attempting to tune AF to do something, and while doing that you realize that a) AE does not really work, and b) there's memory leak of GPU memory or something, so if you keep playing with focus for too long, system is hosed in a way application restart does not cure. #librem5
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pavel

Pavel Machek

KGB vysila do europarlamentu svoje zastupce :-(. (Tedy... pres prostredniky. V tomto pripade si prostrednici rikaji AllatRa).
(Z fb Tatiana Karova). https://www.facebook.com/photo?fbid=25784130691267727&set=a.1793427390764726
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pavel

Pavel Machek

Prebytecny ADSL modem

Nema nekdo prebytecny ADSL modem? Mam tu 2x ZyXEL, jednomu postupem casu priodesla WIFI, takze neprenasi velke pakety, druhemu odesla ta ADSL cast. A pak tu mam jeden Comtrend. Rekneme ze jsem ho... zachranil z nevhodnych podminek... fungoval krasne, jenze pak to schytal od blesku. (A nasledne ja taky, v ty veci jsou kondenzatory). Idealne neco jineho nez ZyXEL...
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pavel

Pavel Machek

Zluty zacina byt hlasity

Ve "vybehu" omylem prekrocil bludny koren -- tedy pardon, padly ohradnik -- a zrejme se mu nechtelo riskovat druhe prekroceni bludneho korene. Chapu, takova chyba se udela, ten ohradnik o pul hodiny predtim nachytal i me. Tak proste stal, a rval. Na poprve mu odpovedela pulka staje, na podruhe jsem zpozornel co se to deje, a na potreti jsem mu odpovedel ze no jo, uz jdu.

Pak dostal trochu sena v "misce". Takove te vetsi misce, na koleckach, taky se ji rika kolecko. Jo, a zachoval se skoro jak kocka. Nejdriv prebral seno od slamy, a pak se tvaril ze "misku" prevrhne... proste uplne jako kocka. Jen ho teda musim pochvalit, kdyz se "ne" rekne dostatecne durazne, tak reaguje. (A tedy ano, kdyby nereagoval, reagoval bych ja :-) ).
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pavel

Pavel Machek

I'm running Linux 7. Are you? :-)
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pavel

Pavel Machek

https://www.youtube.com/watch?v=-_4s56ewrnM Vtipne. A tedy ne, fb neni o moc lepsi nez twitter... takze me najdete na social.kernel.org/pavel
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pavel

Pavel Machek

Omylem jsem koupil syrup se sladidly. Muzu ho vylit do zachoda, nebo se musi likvidovat jako nebezpecny odpad? :-(
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pavel
repeated
Tutanota@mastodon.social

Tuta

Let's remind everyone what a safe internet actually means. 🌐🌍

Share this & Spread the word!

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pavel

Pavel Machek

If you want to hear about phone cameras -- recording from my FOSDEM talk is now available https://mirrors.dotsrc.org/fosdem/2026/ub4132/NZCWQJ-photos_and_video_recording_on_mobile_phones.av1.webm .
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pavel

Pavel Machek

Kdysi jsem programoval jizdni rady.. a v jedne versi jsem mel chybu, ktera vyrabela teleporty.

A ted maji tu chybu na idosu:

Bus 169223 273 JAMI LINES s.r.o.
18:20
Praha,,Černý Most 1

18:29
Hradec Králové,,Terminál HD H2

Jo, vypada to lakave. Ne, tenhle spoj nedoporucuju.
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pavel

Pavel Machek

Bohuzel, nektere obce pod zaminkou "bezpecnosti" vybiraji mytne. Viz treba ricany s radarem mezi poli. Takze tady vlade fandim... https://www.seznamzpravy.cz/clanek/domaci-zivot-v-cesku-mezi-obcemi-a-vladou-doutna-spor-o-miliardy-z-pokut-za-rychlou-jizdu-297543
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pavel

Pavel Machek

Nejlepsi snih na bezky je na silnici Stihlice -- Vyzlovka.
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pavel

Pavel Machek

Gnome Software has this "wheel" button on packages... you press it, and it updates the package. That's not what I would have guessed it would do.

What is worse phone (OnePlus 6 with PostmarketOS) no longer sees the wifi. Any ideas besides "wipe and start again"?
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pavel

Pavel Machek

This is what my fosdem talk will be about... and also fallback if hdmi from phone fails. My notebook with real slides is too far away due to mistake.


Pavel Machek
pavel ucw.cz
social.kernel.org/pavel

horses R+
smartwatch bangle.js2
phones s4 mini
kernel hacker


phones
dumb sensors
no useful isp
camera mandatory


ae, af, debayer, color
lens shading, denoise, yuv, encoding


working design
sensor in mid/high res
debyer+downscale on gpu
on photo: save raw
on movie: pass yuv data to gstreamer


clicks machine
call for hero, @dos
gitlab.com tui/tui ccam
pdaf
movie first
librem 5 specific, 8bit
isp on gpu
30 fps, 1000x700 movie
hw bug


megapixels
mature
problem with new gtk
unsuitable for long movies


libcamera + millicam
tui/libcamera mcam.cpp
debayer + color on gpu
af from @nekocwd
needs bayer re-processing, yuv, lens


4cc
dng is hard
width,height,fourcc
tui/tui 4cc


hw
Librem 5
OnePlus 6


thank you
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pavel

Pavel Machek

I'm at fosdem. Talking about phone cameras at saturday. Feel free to join!
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pavel

Pavel Machek

gsd-color. Not sure what it is supposed to do, but what it does is turning phone into hand warmer. killall -STOP gsd-color seems to fix it. #postmarketos on Samsung S4 mini VE.
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pavel

Pavel Machek

Ano, jsme v cesku. Tak proc nechavame japonce, aby tu rozdmychaval nacionalismus? Proc neodsoudime Okamuru? Aha, on se pred soudem schovava v parlamentu :-(.

https://www.seznamzpravy.cz/clanek/domaci-politika-tady-jsme-v-cesku-ne-na-ukrajine-okamura-odsoudil-jeji-vlajku-na-karlove-moste-297291
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pavel

Pavel Machek

Mozna jste si vsimli zjevnych podvodu na FB. Je videt ze na reklame se da vydelavat... i kdyz si reklamu zada podvnodnik. Dalsi dobry trik je, podvodnikum proste jen dat vyssi sazbu. Jo. A kdyz kliknete na jednu, tak jste asi na podvody nachylny, tak proc to nezkusit vickrat. Jak to rikaj "adblock je antimalware"?

Ja jsem na social.kernel.org/pavel .

https://www.seznamzpravy.cz/clanek/ekonomika-meta-vydelava-miliardy-dolaru-na-podvodnych-reklamach-odhaluji-interni-spisy-293541
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pavel

Pavel Machek

Turns out #opencv is nice and easy to use. I now have fairly complete ISP (image signal processor, thing that turns raw bayer picture into nice looking jpeg) in Python in 212 lines of code.
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pavel

Pavel Machek

Gentle charging should be possible on #oneplus6. Currently experimenting with code at gitlab.com:tui/tui.git ofone/charger.py.
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