Jarkko Sakkinen
Posts
4817Following
319Followers
489OpenPGP: 3AB05486C7752FE1
Jarkko Sakkinen
jarkko
@kernellogger Related to testing V4L2 loopback driver. It kind of grew out of BuildRoot (testing side, hard to get some packages etc.) and Yocto feels way too big hammer. Fedora Server in libvirt feels like the right scale for this work...
0
0
0
Jarkko Sakkinen
repeated
repeated
@ncopa Yeah, I know, I test my own kernel tree on it. Otherwise, I test on QEMU but if I want to give a shot with real HW, this is my pick.
With SBC's you gotta know the gems ;-) For ARM the overally best choice is obviously Raspberry Pi 3B+. What makes this board special is broken TrustZone so you can deploy fTPM on it.
With SBC's you gotta know the gems ;-) For ARM the overally best choice is obviously Raspberry Pi 3B+. What makes this board special is broken TrustZone so you can deploy fTPM on it.
0
0
0
The very first thing with this board is set the dip switches to SDIO mode ;-) Figure 4-10 in https://doc-en.rvspace.org/VisionFive2/PDF/VisionFive2_QSG.pdf
1
1
3
Jarkko Sakkinen
repeated
repeated
Mastodon Engineering
MastodonEngineering@mastodon.socialNew year, new role @Mastodon!
Our core team is looking for a senior Front-end Developer to elevate the web UI/UX experience for our users.
Ideally:
1. You are highly skilled in accessible and semantic #HTML
2. Proficient in modern #CSS
3. Experienced with #Javascript, #Typescript and complex React/Redux applications
This remote full-time position requires a 4-hour overlap with the CET timezone.
For more info/to apply:
https://jobs.ashbyhq.com/mastodon/6a0953c4-812b-4697-b5b3-ea0a2ae402c0
5
17
0
Jarkko Sakkinen
jarkko
@kernellogger OK. It is useful for audio stuff like https://github.com/robbert-vdh/yabridge. Thus interested...
0
0
0
Jarkko Sakkinen
jarkko
I wonder if a kselftest written with Python can depend on GStreamer? I.e. check and skip on failure.
I'm almost done converting the demo shown in my screencast from bash and fmpeg to python and gstreamer [1]. There has been bunch of blockers, like for example getting Python bindings compile in my BuildRoot environment (stable version bump helped).
One final peace that I was missing was how to pass a file descriptor to GStreamer pipeline but here it is:
https://gstreamer.freedesktop.org/documentation/coreelements/fdsrc.html
So... 1.5 weeks of scratching my head but this all work was absolutely required before making the breaking API change to the driver code (i.e. return file descriptor to an anoymous inode in the ioctl instead of writing to /dev/video0).
Now I need only a small tweak to the test program when I test that kernel change. FINALLY ready to go back to the fun i.e. kernel hacking ;-)
[1] https://social.kernel.org/notice/ApXBpAVuAyGBmcPye8
#linux #kernel #gstreamer #python #buildroot
I'm almost done converting the demo shown in my screencast from bash and fmpeg to python and gstreamer [1]. There has been bunch of blockers, like for example getting Python bindings compile in my BuildRoot environment (stable version bump helped).
One final peace that I was missing was how to pass a file descriptor to GStreamer pipeline but here it is:
https://gstreamer.freedesktop.org/documentation/coreelements/fdsrc.html
So... 1.5 weeks of scratching my head but this all work was absolutely required before making the breaking API change to the driver code (i.e. return file descriptor to an anoymous inode in the ioctl instead of writing to /dev/video0).
Now I need only a small tweak to the test program when I test that kernel change. FINALLY ready to go back to the fun i.e. kernel hacking ;-)
[1] https://social.kernel.org/notice/ApXBpAVuAyGBmcPye8
#linux #kernel #gstreamer #python #buildroot
1
2
1
Jarkko Sakkinen
jarkko
When writing a system test for a media (aka V4L2) driver, Python and associated GStreamer bindings seem to be overall the sweet spot.
It has these perks:
- Packaged (unlike ffmpeg bindings).
- Can be injected during the post build.
- Has videotestsrc ;-)
#linux #kernel #media #gstreamer
It has these perks:
- Packaged (unlike ffmpeg bindings).
- Can be injected during the post build.
- Has videotestsrc ;-)
#linux #kernel #media #gstreamer
1
1
2
@janantos Old article https://lwn.net/Articles/567288/. This company does not exist anymore (was acquired) but this article just has great bits on implementing flight control system with off-the-shelf hardware.
The ex-CEO is still active in space biz: https://www.chrislewicki.com/
Chris has so much more vision than Musk and Bezos combined together. He is the real G (eek) ;-) Kudos to Chris.
The ex-CEO is still active in space biz: https://www.chrislewicki.com/
Chris has so much more vision than Musk and Bezos combined together. He is the real G (eek) ;-) Kudos to Chris.
1
0
0