On 09/24/2018 07:12 PM, Mauro Carvalho Chehab wrote: > Em Mon, 24 Sep 2018 16:42:13 +0200 > Hans Verkuil <hverkuil@xxxxxxxxx> escreveu: > >> Hi all, >> >> We are organizing a media mini-summit on Thursday October 25th in >> Edinburgh, Edinburgh International Conference Centre. >> >> If you plan to attend, please let Mauro know. It is open for all, but >> we have a limited number of seats. > > No need to let me explicitly know in advance, but be sure to register for > it at the ELCE/OSS register site. I'll use their tracking system to > know who will be there. We have a limited number of seats there, and > I'm relying on their system to control the number of attendees for > us. Do you have a link of where to register? How many registrations do we have now? Regards, Hans > >> >> Name of the room for the summit: TBD > > I'll get the room name with the event organizers and post it later > on this thread. > >> >> Currently known attendees (please add/remove names as needed): >> >> Sakari Ailus <sakari.ailus@xxxxxx> >> Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx> >> Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> >> Michael Ira Krufky <mkrufky@xxxxxxxxxxx> >> Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> >> Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx> >> Hans Verkuil <hverkuil@xxxxxxxxx> >> Sean Young <sean@xxxxxxxx> >> >> Agenda (First draft!) >> ===================== >> >> General remarks: the given start/end times for the various topics are >> approximate since it is always hard to predict how long a discussion will take. >> If people are attending other summits and those conflict with specific media >> topics they want to be part of, then let me know and we can rearrange the >> schedule to (hopefully) accommodate that. >> >> 9:00-9:15: Introduction (Hans Verkuil) >> >> 9:15-9:30: Status of the HDMI CEC kernel support (Hans Verkuil) >> Give a quick overview of the status: what has been merged, what is >> still pending, what is under development. >> >> 9:30-9:45: Save/restore controls from MTD (Ricardo Ribalda Delgado) >> Industrial/Scientific sensors usually come with very extensive >> calibration information such as: per column gain, list of dead >> pixels, temperature sensor offset... etc >> >> We are saving that information on an flash device that is located >> by the sensor. >> >> Show how we are integrating that calibration flash with v4l2-ctrl. >> And if this feature is useful for someone else and upstream it. >> >> 9:45-11:00: Complex Cameras (Mauro Carvalho Chehab) >> I expect that we could have something to discuss there about complex >> cameras. So, I'd reserve a 50 mins slot for it. >> >> The idea is to discuss about the undergoing work with complex camera >> development is happening. >> >> As we're working to merge request API, another topic for discussion >> is how to add support for requests on it (or on a separate but related >> library). >> >> 11:00-11:15: Break >> >> 11:15-12:00: Automated Testing (Ezequiel Garcia) >> There is a lot of discussion going on around testing, >> so it's a good opportunity for us to talk about our >> current testing infrastructure. >> >> We are already doing a good job with v4l2-compliance. >> Can we do more? >> >> Lunch >> >> 13:30-14:30: Stateless Codec userspace (Hans Verkuil) >> Support for stateless codecs and Request API should be merged for >> 4.20, and the next step is to discuss how to organize the userspace >> support. >> >> Hopefully by the time the media summit starts we'll have some better >> ideas of what we want in this area. >> >> 14:30-15:15: Which ioctls should be replaced with better versions? (Hans Verkuil) >> Some parts of the V4L2 API are awkward to use and I think it would be >> a good idea to look at possible candidates for that. >> >> Examples are the ioctls that use struct v4l2_buffer: the multiplanar support is >> really horrible, and writing code to support both single and multiplanar is hard. >> We are also running out of fields and the timeval isn't y2038 compliant. >> >> A proof-of-concept is here: >> >> https://git.linuxtv.org/hverkuil/media_tree.git/commit/?h=v4l2-buffer&id=a95549df06d9900f3559afdbb9da06bd4b22d1f3 >> >> It's a bit old, but it gives a good impression of what I have in mind. >> >> Another candidate is VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL/VIDIOC_ENUM_FRAMEINTERVALS: >> expressing frame intervals as a fraction is really awkward and so is the fact >> that the subdev and 'normal' ioctls are not the same. >> >> Discuss what possible other ioctls are candidates for a refresh. >> >> 15:15-15:30: Break >> >> 15:30-16:00: Discuss the media development process >> Since we are all here, discuss any issues there may be with the media >> subsystem development process. Anything to improve? >> >> 16:00-16:15: Wrap up >> Create action items (and who will take care of them) if needed. >> Summarize and conclude the day. >> >> End of the day: Key Signing Party >> >> Regards, >> >> Hans > > > > Thanks, > Mauro >
