On Sat July 21 2012 14:16:22 Sylwester Nawrocki wrote:
Hi Hans,
On 07/17/2012 09:32 PM, Hans Verkuil wrote:
On Tue July 17 2012 19:30:53 Mauro Carvalho Chehab wrote:
As we did in 2012, we're planning to do a media summit again at KS/2012.
The KS/2012 will happen in San Diego, CA, US, between Aug 26-28, just before the LinuxCon North America.
In order to do it, I'd like to know who is interested on participate, and to get proposals about what subjects will be discussed there, in order to start planning the agenda.
I'd like to have 30 minutes to discuss a few V4L2 API ambiguities or just plain weirdness, just like I did last year. I'll make an RFC issues to discuss beforehand. I might also have a short presentation/demo of v4l2-compliance, as I believe more people need to know about that utility.
What do you think about adding new M2M capability flag for memory-to-memory video devices ? I prepared an RFC patch for that already: http://www.mail-archive.com/linux-media@vger.kernel.org/msg48497.html
I think that at least qualifies to your list of V4L2 API ambiguities, even though we have device_caps now. Using ORed OUTPUT and CAPTURE flags implies all existing applications must check now both flags when they're trying to discover a video capture or video output device.
I agree. I've added to my list (which is getting pretty long BTW, I will probably need more than 30 minutes).
When adding support for M2M devices to v4l2-compliance I also noticed that using CAPTURE+OUTPUT is a rather awkward way to signal this capability, so I agree to adding a special cap bit for that.
Regards,
Hans