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. Regards, Hans
