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 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. Hans: Finalize the stateful encoder API. There are still two TODOs there, see: https://patchwork.kernel.org/cover/10972783/ Regards, Hans
