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

Loic Poulain
2026-04-13T20:04:08Z

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.

Regards,
Loic

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.