Hi Hans, On Fri, Jun 9, 2023 at 9:08 PM Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > > Hi all, > > This is version 4 of the agenda for the media summit. Changes since v3: > - add the fact mask policy > - updates to the attendees list. > > As always, the agenda is subject to change and all times are guesstimates! > > The media summit will be held on Monday June 26th at the Holiday Inn which > is close to the conference centre where the Embedded Open Source Summit is held: > > Holiday Inn Prague Congress Centre - Meeting room "E" > Na Pankráci 1684/ 15, 140 00 Praha 4-Nusle > https://www.ihg.com/holidayinn/hotels/us/en/prague/prgnp/hoteldetail > > Refreshments (tea/coffee/soda) are available during the day. > > The meeting room is sponsored by Collabora and Cisco Systems Norway. > And lunch is sponsored by Ideas On Board. > > Many thanks to the sponsors! > > Regarding the face mask policy: we will follow the same guidance that the > Linux Foundation gives for the EOSS conference: > > https://events.linuxfoundation.org/embedded-open-source-summit/attend/health-and-safety/ > > So: "Masks are recommended, but not required, to be worn at the event." > > In-Person Attendees: > > Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> (Intel) > Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx> (Collabora) > Deborah Brouwer <deborahbrouwer3563@xxxxxxxxx> > Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> (Media Kernel Maintainer) > Marco Felsch <m.felsch@xxxxxxxxxxxxxx> (Pengutronix) > Sebastian Fricke <sebastian.fricke@xxxxxxxxxxxxx> (Collabora) > Martin Hecht <martin.hecht@xxxxxxxx> (Avnet) > Jai Luthra <j-luthra@xxxxxx> (TI) > Tommaso Merciai <tomm.merciai@xxxxxxxxx> (Avnet) > Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx> (Ideas On Board) > Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx> (Collabora) > Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> (Ideas On Board) > Ricardo Ribalda <ribalda@xxxxxxxxxxxx> (Google) > Michael Roeder <michael.roeder@xxxxxxxx> (Avnet) > Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx> (Ragnatech) > Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx> (Raspberry Pi) > Martin Tůma <tumic@xxxxxxxxxx> (GPXSee) > Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx> (Linaro, tentative, after 16:30 only) > Hans Verkuil <hverkuil-cisco@xxxxxxxxx> (Cisco Systems Norway) > Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> (Ideas On Board) > Arthur Vinchon <arthur.vinchon@xxxxxxxxxxxxxx> (AllegroDVT) > Alain Volmat <alain.volmat@xxxxxxxxxxx> (ST Electronics) I'm still not on the list? ChenYu > Remote Attendees: > > Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx> (Ideas On Board) > Nicolas Dufresne <nicolas@xxxxxxxxxxxx> (Collabora, tentative, afternoon only) > Umang Jain <umang.jain@xxxxxxxxxxxxxxxx> (Ideas On Board) > Hsia-Jun Li <Randy.Li@xxxxxxxxxxxxx> (Synaptics) > Benjamin Mugnier <benjamin.mugnier@xxxxxxxxxxx> (ST Electronics) > > I will email details on how to join remotely a few days before the media summit > starts. > > Disclaimer: I have no idea how good the remote experience will be, it will > depend on how the room is set up and the wifi quality. It worked reasonably > well in Dublin, so fingers crossed. It will be a Webex conference. If you > plan to speak as well, then I strongly recommend that you use a good webcam > since the typical laptop microphone is horrible. > > If you are listed as attendee (in person or remote) and you can't attend > after all, please let me know. > > If you are listed as presenting a topic during the meeting, then please > check if the details are correct. It would be really appreciated if you > can post any slides you have before the meeting (just reply to this message > with the presentation attached). > > Agenda: > > 8:45-9:15: get settled :-) > > 9:15-9:25: Hans: Quick introduction > > 9:25-10:15: Daniel Almeida: Rust V4L2 support > > Discuss the potential blockers as well as the roadmap and priorities for > bindings. Present what is currently supported and what isn't in the Rust > code for V4L2. Identify potential candidates for new drivers that can be > written in Rust. Discuss about maintainership issues related to Rust in V4L2. > > 10:15-10:30: Break > > 10:30-11:15 Hans & Hsia-Jun Li: "Add extended fmt and buffer" patch series > > https://patchwork.linuxtv.org/project/linux-media/cover/20230206043308.28365-1-ayaka@xxxxxxxxxxx/ > > We've been postponing the work on this, but I think we need to decide how to > proceed since pixel formats and single vs multi planar is getting to be a nightmare. > > More details from Hsia-Jun Li: > > 1. v4l2 header would only maintain the codec format and pixel format in bus. > 2. the pixel formats would be maintained by the DirectRender, those M > variant would not be supported in the new extend pixel format API. > 3. The number of plane for a pixel format would also responds for its data > layout. Ex. NV12 = 2 planes(luma, chroma), I420 = 3 planes(Y, U, V). > 4. Userspace that supports new extend API could access those driver didn't > adapt the new API, kernel would have a backward compatible layer. While > the opposite backward compatible is not offered (old API userspace can't > access the driver support the new API). > > [optional part] > 5. An alloc flag would be introduced for allocating those M variant buf. > https://lore.kernel.org/lkml/20230322105226.122467-1-randy.li@xxxxxxxxxxxxx/ > 6. Stateless codec format would be a modifier to the stateful codec format. > We could support different packing mode here. > > 11:15-11:30: Break > > 11:30-12:15: Andrzej Pietrasiewicz: Stateless Encoders: VP8 > > - Introduction to stateless encoders and previous work in this area > > https://github.com/bootlin/linux/tree/hantro/h264-encoding-v5.11 > > https://lore.kernel.org/linux-arm-kernel/20230309125651.23911-1-andrzej.p@xxxxxxxxxxxxx/T/ > > - High level decisions > - Rate control > - VP8 uAPI > - Challenges > > 12:15-13:30: Lunch > > 13:30-14:00: Ricardo Ribalda Delgado: KCAM update > > I would like to share the progress on KCAM from our end. > > I am also trying to collect all the requirements that we are getting > from vendors regarding V4L2. > > 14:00-14:45: Sakari: generic line-based metadata formats: > > https://lore.kernel.org/linux-media/20230505215257.60704-1-sakari.ailus@xxxxxxxxxxxxxxx/T/#t > > 14:45-??:??: Mauro & sub-maintainers: Subsystem development process > > How to improve it? How do we get more maintainers? It's not working very > well at the moment. > > Mauro will present how the media CI works today. > Hans will present how the daily build scripts work. > > Can this be harmonized? > > Final short topic: Hans: Should we keep the media summit together with the ELCE conference? > Or organize it separately, and ask a company like Cisco, Intel or Collabora > to organize a room. What would work best? Anything to improve on this? > > We have the room until 18:30, but (fingers crossed) I hope to finish before that. > > The "Add extended fmt and buffer" and the "Subsystem development process" are > *very* hard to predict. I want to limit the initial discussion of the that first > topic to 45-60 minutes, and continue (if needed) in the afternoon after the discussion > about the subsystem development process. We will have see how it goes. > > Please reply with corrections, questions, etc. to this email. I'll update the agenda > over time. > > Regards, > > Hans
