orvalds/linux/commit/b5c9ed70d1a94c59dad7b1ecfc928863c0fe6ac0
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
www.opensynergy.com
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On 22.09.23 12:03, Laurent Pinchart wrote:
On Fri, Sep 22, 2023 at 07:07:34AM +0200, Alexander Gordeev wrote:
Hi,
I'm working on updating virtio-video draft v8 spec [1] and the
virtio-video V4L2 driver [2]. One of the things, that I don't like in
the current spec draft is sharing the device's
rg/userspace-api/media/v4l/dev-encoder.html#querying-capabilities
[5] https://drive.google.com/file/d/1uPg4kxThlNPBSiC4b5veyFz4OFGytU7v/view
[6] https://elinux.org/Device_Tree_Usage#Device_Specific_Data
[7] https://www.devicetree.org/specifications/
[8] https://github.com/rust-vmm/vm-fdt
[9] https://github.com/dev
On 26.07.23 16:32, Albert Esteve wrote:
On Mon, Jul 10, 2023 at 10:52 AM Alexander Gordeev
<mailto:alexander.gord...@opensynergy.com>> wrote:
Hi Albert,
On 06.07.23 16:59, Albert Esteve wrote:
> Hi Alexander,
>
> Thanks for the patch! It is a l
matured.
Great! Thank you for taking the time to review it.
On Thu, Jun 29, 2023 at 4:49 PM Alexander Gordeev
<mailto:alexander.gord...@opensynergy.com>> wrote:
Add the specification of the video decoder and encoder devices, which
can be used to provide host-accelerated video o
handling.
* Implemented device events using the newly added delayed responses.
Alexander Gordeev (1):
virtio-video: Add virtio video device specification
conformance.tex |4 +
content.tex |1 +
device-types/video/descri
Add the specification of the video decoder and encoder devices, which
can be used to provide host-accelerated video operations to the guest.
Signed-off-by: Alexander Gordeev
Co-authored-by: Keiichi Watanabe
Co-authored-by: Alexandre Courbot
---
conformance.tex |4
ning comments to the draft v6 or added todo comments.
* Finished renaming STOP to RESET.
* Added references to V4L2 and DRM.
* Added conformance sections.
* Fixed a lot of small issues.
* Reformatted for better readability.
Alexander Gordeev (1):
virtio-video: Add virtio video device specification
co
Add the specification of the video decoder and encoder devices, which
can be used to provide host-accelerated video operations to the guest.
Signed-off-by: Alexander Gordeev
Co-authored-by: Keiichi Watanabe
Co-authored-by: Alexandre Courbot
---
conformance.tex |4
on is made on June 30, it would be
better for everyone to have a spec, that is ready to be merged.
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0 - 88
Fax: +49 (30) 60 98 54 0 - 99
EMail: alexander.gord...@opens
On 12.05.23 06:09, Alexandre Courbot wrote:
On Thu, May 11, 2023 at 5:50 PM Alexander Gordeev
wrote:
3. We can have things, that V4L2 doesn't support in their stateful UAPI.
For example, dequeuing output buffers in decoder order.
... provided the host can do that (i.e. has a stateless
On 12.05.23 06:15, Alexandre Courbot wrote:
On Thu, May 11, 2023 at 6:00 PM Alexander Gordeev
wrote:
On 11.05.23 10:50, Alexander Gordeev wrote:
On 08.05.23 06:55, Alexandre Courbot wrote:
On Fri, May 5, 2023 at 8:55 PM Alexander Gordeev
wrote:
On 03.05.23 16:04, Cornelia Huck wrote
On 12.05.23 06:09, Alexandre Courbot wrote:
On Thu, May 11, 2023 at 5:50 PM Alexander Gordeev
wrote:
On 08.05.23 06:55, Alexandre Courbot wrote:
On Fri, May 5, 2023 at 8:55 PM Alexander Gordeev
wrote:
On 03.05.23 16:04, Cornelia Huck wrote:
On Fri, Apr 28 2023, Alexander Gordeev
wrote
Pinchart via libcamera-devel
wrote:
On Fri, May 05, 2023 at 04:55:33PM +0100, Alex Bennée via libcamera-devel wrote:
Kieran Bingham writes:
Quoting Alexander Gordeev (2023-05-05 10:57:29)
On 03.05.23 17:53, Cornelia Huck wrote:
On Wed, May 03 2023, Alex Bennée wrote:
Cornelia Huck writes
On 05.05.23 17:55, Alex Bennée wrote:
Kieran Bingham writes:
Hi All,
Coming in late, thanks to lei/lore spotting the libcamera keyword.
+ Cc: libcamera-devel to raise awareness of the discussion there.
Quoting Alexander Gordeev (2023-05-05 10:57:29)
On 03.05.23 17:53, Cornelia Huck wrote
On 11.05.23 10:50, Alexander Gordeev wrote:
On 08.05.23 06:55, Alexandre Courbot wrote:
On Fri, May 5, 2023 at 8:55 PM Alexander Gordeev
wrote:
On 03.05.23 16:04, Cornelia Huck wrote:
On Fri, Apr 28 2023, Alexander Gordeev
wrote:
On 27.04.23 15:16, Alexandre Courbot wrote:
But in any
On 08.05.23 06:55, Alexandre Courbot wrote:
On Fri, May 5, 2023 at 8:55 PM Alexander Gordeev
wrote:
On 03.05.23 16:04, Cornelia Huck wrote:
On Fri, Apr 28 2023, Alexander Gordeev
wrote:
On 27.04.23 15:16, Alexandre Courbot wrote:
But in any case, that's irrelevant to the guest-host
On 03.05.23 17:11, Alex Bennée wrote:
Cornelia Huck writes:
On Fri, Apr 28 2023, Alexander Gordeev
wrote:
On 27.04.23 15:16, Alexandre Courbot wrote:
But in any case, that's irrelevant to the guest-host interface, and I
think a big part of the disagreement stems from the misconception
On 03.05.23 16:04, Cornelia Huck wrote:
On Fri, Apr 28 2023, Alexander Gordeev
wrote:
On 27.04.23 15:16, Alexandre Courbot wrote:
But in any case, that's irrelevant to the guest-host interface, and I
think a big part of the disagreement stems from the misconception that
V4L2 absolutely
On 03.05.23 17:53, Cornelia Huck wrote:
On Wed, May 03 2023, Alex Bennée wrote:
Cornelia Huck writes:
On Fri, Apr 28 2023, Alexander Gordeev
wrote:
On 27.04.23 15:16, Alexandre Courbot wrote:
But in any case, that's irrelevant to the guest-host interface, and I
think a big part
On 02.05.23 03:07, Alexandre Courbot wrote:
On Fri, Apr 28, 2023 at 5:55 PM Alexander Gordeev
wrote:
On 28.04.23 06:02, Alexandre Courbot wrote:
This is going to be my last answer to this thread ; I don't think I
have more technical arguments to give than I already have and the
discussion
at least share your feedback on my proposal for the
QUEUE/DRAIN completion handling?
On Thu, Apr 27, 2023 at 11:11 PM Alexander Gordeev
wrote:
On 25.04.23 18:04, Cornelia Huck wrote:
[I'm replying here, as that seems to be the last message in the thread,
and my reply hopefully catches everyone
On 28.04.23 05:24, Alexandre Courbot wrote:
On Fri, Apr 28, 2023 at 12:12 AM Alexander Gordeev
wrote:
On 27.04.23 15:23, Alexandre Courbot wrote:
On Thu, Apr 27, 2023 at 12:52 AM Alexander Gordeev
wrote:
On 21.04.23 06:02, Alexandre Courbot wrote:
On Wed, Apr 19, 2023 at 4:39 PM
On 28.04.23 05:22, Alexandre Courbot wrote:
On Thu, Apr 27, 2023 at 11:20 PM Alexander Gordeev
wrote:
On 26.04.23 07:52, Alexandre Courbot wrote:
On Mon, Apr 24, 2023 at 4:52 PM Alexander Gordeev
wrote:
On 21.04.23 18:01, Alexander Gordeev wrote:
Let's compare
On 28.04.23 05:22, Alexandre Courbot wrote:
On Thu, Apr 27, 2023 at 11:35 PM Alexander Gordeev
wrote:
On 27.04.23 12:13, Bartłomiej Grzesik wrote:
Hi Alexander
On Wed, Apr 26, 2023 at 6:00 PM Alexander Gordeev
wrote:
Hi Bartłomiej,
On 21.04.23 13:49, Bartłomiej Grzesik wrote:
+CC
On 27.04.23 15:16, Alexandre Courbot wrote:
On Thu, Apr 27, 2023 at 12:11 AM Alexander Gordeev
wrote:
On 21.04.23 06:02, Alexandre Courbot wrote:
Hi Alexander,
On Mon, Apr 17, 2023 at 9:52 PM Alexander Gordeev
wrote:
Hi Alexandre,
Thanks for you letter! Sorry, it took me some time
On 27.04.23 15:23, Alexandre Courbot wrote:
On Thu, Apr 27, 2023 at 12:52 AM Alexander Gordeev
wrote:
On 21.04.23 06:02, Alexandre Courbot wrote:
On Wed, Apr 19, 2023 at 4:39 PM Alexander Gordeev
wrote:
On 17.04.23 16:43, Cornelia Huck wrote:
On Mon, Apr 17 2023, Alexander Gordeev
On 27.04.23 12:13, Bartłomiej Grzesik wrote:
Hi Alexander
On Wed, Apr 26, 2023 at 6:00 PM Alexander Gordeev
wrote:
Hi Bartłomiej,
On 21.04.23 13:49, Bartłomiej Grzesik wrote:
+CC chromeos-arc-video-eng team that also works on virtio-video
Hi everyone!
From the experience of working
On 26.04.23 07:52, Alexandre Courbot wrote:
On Mon, Apr 24, 2023 at 4:52 PM Alexander Gordeev
wrote:
On 21.04.23 18:01, Alexander Gordeev wrote:
On 21.04.23 06:02, Alexandre Courbot wrote:
* I am still not convinced that V4L2 is lacking from a security
perspective. It would take just one
to continue (with two different devices, if there is
really no other way.)
Thanks for your suggestions!
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0 - 88
Fax: +49 (30) 60 98 54 0 - 99
EMail: alexander.gord...@opensynergy.com
www.ope
be a protocol similar to how
virtio-video was, that has the benefit of allowing very simple guest
drivers.
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0 - 88
Fax: +49 (30) 60 98 54 0 - 99
EMail: alexander.gord...@opensynergy.com
On 21.04.23 06:02, Alexandre Courbot wrote:
On Wed, Apr 19, 2023 at 4:39 PM Alexander Gordeev
wrote:
On 17.04.23 16:43, Cornelia Huck wrote:
On Mon, Apr 17 2023, Alexander Gordeev
wrote:
OpenSynergy, the company that I work for, develops a proprietary
hypervisor called COQOS mainly
On 21.04.23 06:02, Alexandre Courbot wrote:
Hi Alexander,
On Mon, Apr 17, 2023 at 9:52 PM Alexander Gordeev
wrote:
Hi Alexandre,
Thanks for you letter! Sorry, it took me some time to write an answer.
First of all I'd like to describe my perspective a little bit because it
seems
On 21.04.23 18:01, Alexander Gordeev wrote:
Hi Alexandre,
On 21.04.23 06:02, Alexandre Courbot wrote:
* I am still not convinced that V4L2 is lacking from a security
perspective. It would take just one valid example to change my mind
(and no, the way the queues are named is not valid). And btw
-of-absence-8148958da092
https://www.schneier.com/essays/archives/1999/11/a_plea_for_simplicit.html
Kind regards,
Alexander Gordeev
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0 - 88
Fax: +49 (30) 60 98 54 0 - 99
EMail
Thanks for your feedback, Enrico!
On 19.04.23 23:34, Enrico Granata wrote:
Inlined
Thanks,
- Enrico
Thanks,
- Enrico
On Wed, Apr 19, 2023 at 12:39 AM Alexander Gordeev
wrote:
On 17.04.23 16:43, Cornelia Huck wrote:
On Mon, Apr 17 2023, Alexander Gordeev
wrote:
OpenSynergy
On 17.04.23 16:43, Cornelia Huck wrote:
On Mon, Apr 17 2023, Alexander Gordeev
wrote:
Hi Alexandre,
Thanks for you letter! Sorry, it took me some time to write an answer.
First of all I'd like to describe my perspective a little bit because it
seems, that in many cases we (and other people
still have concerns about memory management with V4L2 UAPI
pass-through. Please see below.
On 17.03.23 08:24, Alexandre Courbot wrote:
Hi Alexander,
On Thu, Mar 16, 2023 at 7:13 PM Alexander Gordeev
wrote:
Hi Alexandre,
On 14.03.23 06:06, Alexandre Courbot wrote:
The spec should indeed
, but I'd like to make sure that you're interested
in the discussion first.
Meanwhile I'll also try to add support for stateful decoders and
guest-allocated buffers to the prototype so it can be considered more
complete.
Cheers,
Alex.
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
On 06.02.23 15:12, Cornelia Huck wrote:
On Thu, Jan 19 2023, Alexander Gordeev
wrote:
On 12.01.23 07:39, Alexandre Courbot wrote:
On Thu, Jan 12, 2023 at 3:42 AM Alexander Gordeev
wrote:
Well, on the one hand mimicking v4l2 looks like an easy solution from
virtio-video spec writing
On 07.02.23 07:51, Alexandre Courbot wrote:
On Thu, Jan 19, 2023 at 8:06 AM Alexander Gordeev
wrote:
Well, on the one hand mimicking v4l2 looks like an easy solution from
virtio-video spec writing perspective. (But the implementers will have
to read the V4L2 API instead AFAIU, which
Hi Alexandre,
On 12.01.23 07:39, Alexandre Courbot wrote:
On Thu, Jan 12, 2023 at 3:42 AM Alexander Gordeev
wrote:
Hi Alexandre,
On 27.12.22 08:31, Alexandre Courbot wrote:
Hi Alexander,
Cornelia provided links to the previous versions (thanks!). Through
these revisions we tried different
Hi Alexandre,
On 12.01.23 07:32, Alexandre Courbot wrote:
Hi Alexander,
On Thu, Jan 12, 2023 at 2:04 AM Alexander Gordeev
wrote:
+\subsubsection{Bitstream formats}\label{sec:Device Types / Video Device /
Supported formats / Bitstream formats}
+
+The fourcc code of each supported bitstream
in the spec. They were there in v5.
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0 - 88
Fax: +49 (30) 60 98 54 0 - 99
EMail: alexander.gord...@opensynergy.com
www.opensynergy.com
Handelsregister/Commercial Registry: Amtsgericht
Hi Alexandre,
On 27.12.22 08:31, Alexandre Courbot wrote:
Hi Alexander,
On Tue, Dec 20, 2022 at 1:59 AM Alexander Gordeev
wrote:
Hello Alexandre,
Thanks for the update. Please check my comments below.
I'm new to the virtio video spec development, so I may lack some
historic perspective. I
for the Y and UV
+planes.
+\item[\field{YU12}]
+one Y plane followed by one Cb plane, followed by one Cr plane, in a
+single buffer. 4:2:0 subsampling.
+\item[\field{YM12}]
+same as \field{YU12} but using three separate buffers for the Y, U and V
+planes.
+\end{description}
--
Alexander Gordeev
Senior
than trying to
replicate existing definitions and explanations.
I like the plan. I also think it is better to reference the definitions
and explanations, not replicate them. Thanks!
--
Alexander Gordeev
Senior Software Engineer
OpenSynergy GmbH
Rotherstr. 20, 10245 Berlin
Phone: +49 30 60 98 54 0
Hello Cornelia,
On 20.12.22 10:51, Cornelia Huck wrote:
On Mon, Dec 19 2022, Alexander Gordeev
wrote:
Hello Alexandre,
Thanks for the update. Please check my comments below.
I'm new to the virtio video spec development, so I may lack some
historic perspective. I would gladly appreciate
Hello Alexandre,
Thanks for the update. Please check my comments below.
I'm new to the virtio video spec development, so I may lack some
historic perspective. I would gladly appreciate pointing me to some
older emails explaining decisions, that I might not understand. I hope
to read through all
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