On Tue, Sep 3, 2019 at 4:21 PM Hans Verkuil <hverkuil@xxxxxxxxx> 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. > > 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. Hi Hans, I plan to be here at least for the codec and V4L2 developments meetings. Thanks, Alex. > > 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 > >> > > >
