Re: [ANNv4] Media Summit on May 26th in Nice, France

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

On Mon, Apr 13, 2026 at 10:03:52PM +0200, Loic Poulain wrote:
> Hi Hans,
> 
> I would be happy to discuss this if a slot is available:
> 
> Title: Generic V4L2 ISP M2M framework
> Presenter: Loic Poulain
> Time estimate: ~20min
> Description: During early development of a Qualcomm Offline Image
> Processing Engine (OPE), we relied on the V4L2 memory‑to‑memory
> (v4l2‑m2m) framework, which is widely used and provides solid support
> for buffer management and scheduling. However, applying it to an ISP
> use case exposes limitations: ISP engines often require a richer media
> graph, with multiple pads and metadata flows, similar to inline ISP
> pipelines (params, stats, outputs). This talk proposes discussing the
> need for and design of a common V4L2 ISP M2M framework to factor out
> shared functionality across drivers, particularly around buffer/queue
> management and job scheduling.

That's well aligned with the v4l2-isp framework that Jacopo started, and
to the multi-context and media-jobs APIs that we have proposed. I
wonder, however, if a short session at the media summit will be enough,
or if we should try to organize a half day brainstorming workshop at
some point. Depending on when the people interested in this topic plan
to arrive, Monday could be an option.

> On Sun, Apr 12, 2026 at 12:25 PM Hans Verkuil <hverkuil+cisco@kernel.org> wrote:
> >
> > (Please pass this on to anyone you think might be interested in this!)
> >
> > Hi all,
> >
> > This is the fourth version of this announcement, updating the list of attendees
> > and the tentative agenda at the end: please let me know if you see mistakes.
> > Note that there is still time for one or two other topics. Also please check
> > the agenda if you need more (or perhaps less) time for your topic.
> >
> > This year's Media Summit will be held on Tuesday May 26th the day before the
> > Embedded Recipes Conference in Nice, France:
> >
> > https://embedded-recipes.org/2026/
> >
> > The Media Summit will be held at Hotel Campanile and in the same meeting room
> > as last year (Nikaia):
> >
> > https://nice-aeroport.campanile.com/en-us/
> >
> > It is close to the Airport and to the Embedded Recipes venue.
> >
> > The meeting room can hold up to 30 people and I will provide video conferencing support,
> > just like last year. The location and the meeting room was quite nice last year, so
> > I saw no need to change it.
> >
> > That said, in-person participation is very much preferred. This yearly summit is meant
> > for active media developers to meet face-to-face and to discuss media subsystem issues.
> >
> > And it is also a good opportunity to talk to each other during the Embedded Recipes
> > conference to discuss topics in a smaller group. But if you are an active media developer
> > and are really not able to attend in person, then remote participation is an option.
> >
> > If you want to attend the meeting (either in person or remote), then send an email to me
> > directly. The deadline for in-person attendance is May 14 as the hotel needs to know the
> > final number of attendees by then.
> >
> > There is no registration fee, the meeting room is sponsored by Cisco and Collabora, and
> > the lunch is sponsored by Ideas on Board! Many thanks to our sponsors, it's very much
> > appreciated.
> >
> > If you have a topic that you want to discuss, just 'Reply All' to this announcement
> > and give the topic title, a short description and a guesstimate of the time you need
> > for your topic.
> >
> > See last year's Media Summit Report as an example of what to expect:
> >
> > https://lore.kernel.org/linux-media/21769183-ca57-4f8f-818a-6a1ad089298d@jjverkuil.nl/
> >
> > Regards,
> >
> >         Hans
> >
> > PS: Be aware that May 24 and 25 are public holidays in France. So many shops may be
> > closed those days.
> >
> > In-person attendees:
> > Sakari Ailus <sakari.ailus@linux.intel.com>
> > Kieran Bingham <kieran.bingham@ideasonboard.com>
> > Brandon Brnich <b-brnich@ti.com>
> > Rouven Czerwinski <rouven.czerwinski@linaro.org>
> > Mehdi Djait <mehdi.djait@linux.intel.com>
> > Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> > Nicolas Dufresne <nicolas.dufresne@collabora.com>
> > Marco Felsch <m.felsch@pengutronix.de>
> > Paul Kocialkowski <paulk@sys-base.io>
> > Jai Luthra <jai.luthra@ideasonboard.com>
> > Jacopo Mondi <jacopo.mondi@ideasonboard.com>
> > Benjamin Mugnier <benjamin.mugnier@foss.st.com>
> > Beleswar Padhi <b-padhi@ti.com>
> > Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> > Loic Poulain <loic.poulain@oss.qualcomm.com>
> > Sven Püschel <s.pueschel@pengutronix.de>
> > Ricardo Ribalda <ribalda@chromium.org>
> > Michael Riesch <michael.riesch@collabora.com>
> > Devarsh Thakkar <devarsht@ti.com>
> > Michael Tretter <m.tretter@pengutronix.de>
> > Hans Verkuil <hverkuil@kernel.org>
> >
> > Remote attendees:
> > Yemike Abhilash Chandra <y-abhilashchandra@ti.com>
> > Rishikesh Donadkar <r-donadkar@ti.com>
> > Jackson Lee <jackson.lee@chipsnmedia.com>
> > Dave Stevenson <dave.stevenson@raspberrypi.com> (tentative)
> >
> >
> > Agenda (tentative):
> >
> > 8:45-9:20: Arrive, settle in
> >
> > 9:20-9:30: Short intro (Hans Verkuil)
> >
> > 9:30-9:45: Status of ISP support in V4L2
> >         Presenter: Laurent Pinchart
> >         Description: Summary of ISP-related development in V4L2 since the last
> >         Linux Media Summit. This includes a brief overview of technical
> >         developments, and a summary of the efforts to engage with vendors.
> >
> > 9:45-10:45: V4L2 Stateless Video Encoding uAPI Progress Update
> >         Presenter: Paul Kocialkowski
> >         Description: An update on the ongonig work to support stateless codecs in V4L2.
> >         Some of the remaining open topics will be presented and discussed.
> >
> > 10:45-11:00: break
> >
> > 11:00-11:30: Vulkan Video Codecs
> >         Presenter: Nicolas Dufresne
> >         Description: Vulkan video codecs: what are the viable options for Linux Media
> >         and what is in preparation outside of our subsystem. The second aspect is
> >         informative as these discussions don't seem to lean toward our subsystem as the
> >         foundation. But I think it's rather useful for everyone to understand why and
> >         what is included.
> >
> > 11:30-12:00: Protected Video playback on i.MX8MQ
> >         Presenter: Rouven Czerwinski
> >         Description: Introduction to protected video playback
> >         on i.MX8MQ and missing bits for linux-media & protected heap interoperability.
> >
> > 12:00-13:30: Lunch
> >
> > 13:30-14:00: HDCP support for HDMI receivers
> >         Presenter: Hans Verkuil
> >         Description: I have been working on adding HDCP support for HDMI receivers.
> >         Specifically the HDCP negotiation between sources and sinks.
> >
> > 14:00-14:30: AI patches
> >         Presenter: Sakari Ailus
> >         Description: What is our policy w.r.t. AI generated patches?
> >
> > 14:30-15:00 Overview of Media CI: where do pipelines run?
> >         Presenter: Ricardo Ribalda
> >         Description: How are jobs in pipelines assigned? How does the infrastructure
> >         for Media CI work? Are there things that can be tweaked to make it more
> >         reliable?
> >
> > 15:00-15:15: Break
> >
> > 15:15-16:15: Discussion of the media subsystem development process
> >         Presenter: Hans Verkuil
> >         Description: Review of the multi-committer model: current status and next steps.
> >         Are there any bottlenecks, any ideas for improvements, w.r.t. the development process?
> >
> > As you can see, there is still some available time for other topics.

-- 
Regards,

Laurent Pinchart