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

[Jacopo Mondi <jacopo.mondi@ideasonboard.com>]

Hi Loic

On Fri, May 22, 2026 at 09:49:34PM +0200, Loic Poulain wrote:
> Hi Folks,
>
> On Tue, Apr 28, 2026 at 7:55 PM Nicolas Dufresne
> <nicolas.dufresne@collabora.com> wrote:
> >
> > Le mardi 28 avril 2026 à 15:00 +0200, Hans Verkuil a écrit :
> > > On 4/28/26 14:30, Jacopo Mondi wrote:
> > > > Hello
> > > >
> > > > On Tue, Apr 14, 2026 at 11:42:59AM +0300, Laurent Pinchart wrote:
> > > > > On Tue, Apr 14, 2026 at 10:34:13AM +0200, Loic Poulain wrote:
> > > > > > On Tue, Apr 14, 2026 at 9:42 AM Laurent Pinchart wrote:
> > > > > > > On Tue, Apr 14, 2026 at 09:20:56AM +0200, Michael Riesch wrote:
> > > > > > > > On 4/14/26 08:55, Ricardo Ribalda wrote:
> > > > > > > > > On Tue, 14 Apr 2026 at 08:47, Hans Verkuil <hverkuil+cisco@kernel.org> wrote:
> > > > > > > > > > On 13/04/2026 23:16, Laurent Pinchart wrote:
> > > > > > > > > > > On Mon, Apr 13, 2026 at 04:25:54PM -0400, Nicolas Dufresne wrote:
> > > > > > > > > > > > Le lundi 13 avril 2026 à 23:19 +0300, Laurent Pinchart a écrit :
> > > > > > > > > > > > > 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.
> > > > > > > >
> > > > > > > > It seems that we share some pain points.. :-) :-/
> > > > > > > >
> > > > > > > > Over the last year, some ideas have been brewing in my mind. Not
> > > > > > > > necessarily *my* ideas, mind you, rather ideas that have been around in
> > > > > > > > linux-media for quite a while, actually. What I would like to prepare
> > > > > > > > for the Media Summit goes along the same lines.
> > > > > > > >
> > > > > > > > > > > > > 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.
> > > > > > > > > > > >
> > > > > > > > > > > > I'm also/still interested in the multi-context for m2m decoders that have inline
> > > > > > > > > > > > post-processing capabilities (current model forces us to waste a lot of RAM). We
> > > > > > > > > > > > just restarted some design discussion with the team, with an increased
> > > > > > > > > > > > confidence that multi-context is the way. The scheduler could come handy in the
> > > > > > > > > > > > future if we get to deal with more multi-stage codecs in the future. I'll be in
> > > > > > > > > > > > Nice all day Monday.
> > > > > > > > > > >
> > > > > > > > > > > I will unfortunately be available only until 15:00 on Monday, but Jacopo
> > > > > > > > > > > should be available through the day. Let's see who would be interested
> > > > > > > > > > > and available, and try to organize something.
> > > > > > > > > >
> > > > > > > > > > I'm available on Monday as well. I think this is a topic that is well suited
> > > > > > > > > > to a brainstorm session.
> > > > > > > > >
> > > > > > > > > I am also available on Monday and would like to attend the session.
> > > > > > > >
> > > > > > > > I'd be interested too. Right now the plan is to arrive on Monday
> > > > > > > > afternoon. Depending on what time you agree on it may work out anyway.
> > > > > > > > It would be great to know the exact time this session will start (as I
> > > > > > > > might need to adjust my travel arrangements).
> > > > > >
> > > > > > I can arrive on Monday, with a preference for the afternoon.
> > > > > >
> > > > > > > We need a volunteer to organize this, as in finding and booking a
> > > > > > > meeting space. Note that Monday is a public holiday in France (Monday
> > > > > > > the 25th of May in particular, not all Mondays).
> > > > > > >
> > > > > > > If the number of attendees was small I was thinking of hosting the event
> > > > > > > in the place where the Ideas on Board team will be staying, but it looks
> > > > > > > like we're already reaching a fair number of people.
> > > > > > >
> > > >
> > > > Are we still considering this BoF session ?
> > > >
> > > > We would someone to volunteer organizing this, at @IoB we're quite
> > > > full for the week and we might have an hard time organizing this one
> > > > on top of the libcamera workshop.
> > > >
> > > > As Laurent said, that Monday is a public holiday in France, and
> > > > getting a room somewhere might be complicated.
> > > >
> > > > We can host some people in the location where we're having the yearly IoB
> > > > get-together, but you should arrange your travel there (35 minutes
> > > > from Nice by car).
> > > >
> > > > If we get a volunteer we can should maybe a dedicated mail thread as this one
> > > > was about the Media Summit ?
> > >
> > > If the number of people can be kept low (say <= 6), then it shouldn't be a
> > > problem to just find a hotel restaurant or similar, close to the place of
> > > the media summit, and just sit together.
> > >
> > > Who would be the key people for this? And who are 'nice to have'? :-)
> > > I think I probably fit more in the latter category than the first.
> >
> > I was hoping a small number of people and a simple café/lobby too. The mass of
> > people interested in the reply arrive much later, but I'm there all day, and
> > would be more then happy to be able to brainstorm the subject a bit, which is
> > easier in small group.
>
> Is this BoF side session still planned? If there’s still interest,
> perhaps the easiest option would simply be to meet at the hotel lobby
> on Monday morning.
>

I'm around Nice like many others on Monday, but I'm not sure how this
would feel for people that didn't arrange their travels accordingly
because this event was never officially announced.


> Regards,
> Loic
>