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<sunshavi>
fALSO: tuxd3v: I have got libva-v4l2-request compiled and working with kernel 5.5 and the 3 patches from hantro. I needed to add another patch to libva. And compilation ended
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<tuxd3v>
sunshavi, nice you succeded, so after all the patchs were all needed plus a 4th one..
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<sunshavi>
thanks to the hantro guys that fixed libva-v4l2-request. It is working that's fine
<megi>
more detail is needed
<sunshavi>
i am with firefox 72 on my opi+2e. But sometimes when my son open firefox and libreoffice. The machine gets very slow
<sunshavi>
which details?
<megi>
what unknown libva error is
<megi>
maybe you can try some other backend than vaapi_drm
<sunshavi>
like which one?.
<sunshavi>
what I would like to have is libvdpau working on archlinux for using gpu decoding with mpv
<megi>
perhaps some that doesn't use DRM directly
<megi>
I don't use vlc much, but I know it has multiple output options
<sunshavi>
Mmm. I would need to do some research for looking for that info
<sunshavi>
Let's me give more info. I am using mesa-git with glamor activated which has still some rough edges. and sometimes when navigating with firefox the complete window manager (openbox) core dumps. and I need to restart X. But as we are on quarantinee. One of my sons use my machine for doing his homework so i have need to disable glamor. And I do not have a good video player for playing some utu.be news (on video). That was the reason I
<sunshavi>
need libva-v4l2-request fixed. But libva has scarce documentation.
<sunshavi>
most of my digital life I have used mplayer. But on opi+2e mpv has better rendering so I moved from mplayer to mpv this year
<sunshavi>
vlc in my experience is slower. But until know It has been the only one that has let me try mp4-gpu decoding
<sunshavi>
i would need to read about vlc multiple output options
<sunshavi>
s/know/now/
<megi>
there's also vaapi_x11 and vaapi_wl
<megi>
in vlc
<anarsoul>
sunshavi: you're confusing gpu with vpu
<anarsoul>
gpu doesn't do video decoding
<sunshavi>
mmm.
<sunshavi>
anarsoul: thanks for clarification
<sunshavi>
I am going to try to test vaapi_wl and vaapi_x11 with vlc. And see how far it leads me.
<sunshavi>
anarsoul: cedrus and mesa both use vpu?
<megi>
mesa doesn't use vpu
<anarsoul>
cedrus is vpu driver, it has nothing to do with mesa
<sunshavi>
but mpv rendering with just mesa is very smooth
<anarsoul>
megi: well, it has vpu drivers for e.g. radeon
<anarsoul>
sunshavi: because it uses gpu for scaling
<megi>
...on sunxi
<anarsoul>
and modern ARM CPUs are pretty good at sw decoding
<anarsoul>
A64 can decode 720p h264 without any issues
<anarsoul>
but not 1080p
<sunshavi>
this info about the differences between mesa and cedrus is not really clear to me. is there an article I could read?
<anarsoul>
what's not clear? GPU and VPU are two difference devices
<anarsoul>
mesa contains userspace part of driver for GPU
<megi>
an display engine is also another separate device, handled by DRM drivers
<anarsoul>
megi: exactly
<anarsoul>
display controller is not a GPU
<sunshavi>
cedrus is VPU; and mesa is sw decoding with GPU help for scaling
<megi>
mesa doesn't do decoding
<sunshavi>
mesa is just for scaling?
<megi>
if you want it
<megi>
display engine can also do scaling
<megi>
without mesa
<anarsoul>
sunshavi: mesa is just for rendering using GPU
<anarsoul>
you can do scaling using GPU
<anarsoul>
you can also texture a cube with your video if you'd like to
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<megi>
hmm, I don't see how vaapi integrates with DRM, libva has very little DRM code
<megi>
basically just for getting the DRM device
<anarsoul>
megi: it's not?
<megi>
maybe the hard work is supposed to be done somewhere else
<sunshavi>
when applying the patch there was an issue with the meson part that needs manual intervention (remove that part from the patch)
<sunshavi>
megi: I would like to test those other vlc outputs. If I try it. I would let You know. Also I would like to enable libvdpau on archlinux. for using libva-v4l2-request on mpv
<megi>
sunshavi: great let me know if something will work
<megi>
I also like mpv the best
<sunshavi>
I have tried in the past the libvdpau in the past without success (it needed something another library. THat I do not remember and machine hanged so I would need to research again )
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<sunshavi>
/dev/video0 is not appearing on Archlinux
<sunshavi>
so which one Should I try first (vlc other outputs or libvdpau)? I think vlc outputs is easier
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<megi>
vlc
<sunshavi>
libvdpau /dev/video0 needs a kernel module on archlinux {i do not remember the name of the module}
<sunshavi>
ok vlc then
<tuxd3v>
/dev/video0 ir related with sun4i-csi camera module I think..
<tuxd3v>
ir -> is
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<tuxd3v>
sunshavi, sorry my mistake
<tuxd3v>
cedrus 1c0e000.video-codec: Device registered as /dev/video0
<sunshavi>
tuxd3v: :)
<anarsoul>
it depends on probe order
<tuxd3v>
in factdmesg only shows me:
<tuxd3v>
for csi:
<tuxd3v>
cedrus 1c0e000.video-codec: Device registered as /dev/video0
<tuxd3v>
videodev: Linux video capture interface: v2.00
<tuxd3v>
csi, the last..
<tuxd3v>
but I have to camera attached..
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<tuxd3v>
to -> no
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<splitice>
I'm probably missing something obvious but can anyone see whats wrong with https://0x0.st/iaHC.dtsi
<splitice>
parsing error at the first cooling-device line