Hi, On Fri, 13 Sep 2019 at 13:27, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > > On 9/3/19 9:21 AM, Hans Verkuil wrote: > > Hi all, > > > > I've decided to hold the meeting during the ELCE and not on Thursday. > > Two key people can't be there on Thursday and some travel back Thursday > > evening and so would have to leave early. > > > > Looking at the schedule I propose instead to have one meeting on > > Tuesday morning concentrating on finalizing the codec support. > > > > On Wednesday we have a second meeting for libcamera (morning) and looking > > at future V4L2 developments such as v4l2_ext_buffer/format, Request API and > > complex camera pipelines (afternoon). > > > > Laurent, it would make sense if you or one of the other libcamera devs is > > 'chairing' the libcamera meeting. Do you agree? If so, can you prepare an > > agenda for that meeting? > > > > I plan on leaving Thursday afternoon, so we have the option to continue the > > talks around that last topic on Thursday morning. > > > > I have no idea where we will hold these meetings since I've no idea > > what the conference center looks like and if they have suitable places > > for doing something like this. So I'll look around on the Monday and > > mail the details of where to meet then. > > Good news: the Linux Foundation found a room for us, for both the Tuesday > morning (8-12AM) and the whole of Wednesday (8AM-6PM). > > The room is: Terreaux VIP Lounge - Level 0 > It's boardroom seating for 15, screen & Projector, 3 power strips on the tables. > > Many thanks to the LF for hosting this for us! > > Regards, > > Hans > I will be in the ELCE for the first time and since I've also started to work recently with Ricardo Ribalda and with industrial cameras (v4l2, sensors, encoders...) I would love to attend all the meetings: codecs, libcamera, and V4L2 development. > > > > Confirmed attendees: > > > > Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> > > Alexandre Courbot <acourbot@xxxxxxxxxxxx> > > Nicolas Dufresne <nicolas@xxxxxxxxxxxx> > > Tomasz Figa <tfiga@xxxxxxxxxxxx> > > Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> > > Eugen Hristev <Eugen.Hristev@xxxxxxxxxxxxx> > > Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> > > Helen Koike <helen.koike@xxxxxxxxxxxxx> > > Jacopo Mondi <jacopo@xxxxxxxxxx> > > Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > > Hans Verkuil <hverkuil@xxxxxxxxx> > > > > If you are not on this list, but want to join, please let me know. > > > > Since this is really three half-day meetings, each with a different > > topic, please let me know which of those half-day meetings you want > > to attend. > > > > Regards, > > > > Hans > > > > On 8/28/19 12:55 PM, Hans Verkuil wrote: > >> On 8/16/19 10:06 AM, Hans Verkuil wrote: > >>> Rather then discussing topics for a meeting under the subject 'Lisbon' > >>> let's start a new thread referring to the right place :-) > >>> > >>> I will try to organize a room, either during the ELCE or (if that doesn't > >>> work) perhaps on the Thursday afterwards. If that's going to be a problem > >>> for someone, please let me know. > >> > >> I can only get a room for Thursday afternoon (2pm-6pm). I'm inclined to take > >> that room, but if a lot of people who want to come, will already have left > >> on the Thursday, then there is no point in me reserving this room. > >> > >> So if you are unable to attend on Thursday, then please let me know asap! > >> > >> If Thursday is no problem, then I wanted to have more informal meetings > >> somewhere in the conference center during the morning, and after lunch > >> use the room. > >> > >> If Thursday is a no-go, then we will just have to find a place inside > >> the conference center during the ELCE. > >> > >> Regards, > >> > >> Hans > >> > >>> > >>> I do need to know how many people I can expect. I have the following > >>> confirmed attendees (and please reply if you are not listed!): > >>> > >>> Alexandre Courbot <acourbot@xxxxxxxxxxxx> > >>> Tomasz Figa <tfiga@xxxxxxxxxxxx> > >>> Jacopo Mondi <jacopo@xxxxxxxxxx> > >>> Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > >>> Hans Verkuil <hverkuil@xxxxxxxxx> > >>> > >>> I know there were more who mentioned on irc that they would attend, > >>> but it is easier to keep track if I have it in an email. > >>> > >>> Topics posted under the previous thread: > >>> > >>> Tomasz: > >>> > >>> I would want to discuss various v4l2_buffer improvements, e.g. > >>> - DMA-buf import with plane offsets, > >>> - unifying the buffer structs for M and non-M formats, > >>> - ability to import different FDs with offsets for non-M formats if the > >>> layout matches driver expectations, etc. > >>> > >>> Besides that, I would be interested in the general idea on handling > >>> complex cameras in the Linux kernel in spite of the remaining V4L2 > >>> limitations, e.g. > >>> - combinatorial explosion of /dev/video nodes, > >>> - significant ioctl overhead, > >>> - huge amount of historical legacy making the driver and userspace > >>> implementations overly difficult and prone to repetitive mistakes, > >>> - the above also limiting the flexibility of the API - formats, frame > >>> rates, etc. set using distinct APIs, not covered by Request API, with > >>> non-failure "negotiation hell", etc. > >>> - lack of fences, etc. > >>> > >>> Jacopo: > >>> > >>> Apart from discussing libcamera and hope we could kickstart a review of > >>> its API, I would like to re-start discussing multiplexed stream support, > >>> but that would require Sakari to be there, something I'm not certain > >>> about. Sakari? > >>> > >>> Alexandre: > >>> > >>> If Collabora/Bootlin is there, I'd certainly want to discuss stateless > >>> codecs, in particular m2m codec helpers and finalize the specification > >>> in general. > >>> > >>> Regards, > >>> > >>> Hans > >>> > >> > > > Regards, Daniel
