2012/9/6 Hans Verkuil <hverkuil@xxxxxxxxx>: > On Thu September 6 2012 06:09:44 Jun Nie wrote: >> 2012/9/5 Hans Verkuil <hverkuil@xxxxxxxxx>: >> > On Wed 5 September 2012 10:04:41 Jun Nie wrote: >> >> Is there any summary for this summit or presentation material? I am >> >> looking forward for some idea on CEC. It is really complex in >> >> functionality. >> >> Maybe other guys is expecting simiar fruite from summit too. >> > >> > Yes, there will be a summit report. It's not quite finished yet, I think. >> > >> > With respect to CEC we had some useful discussions. It will have to be a >> > new class of device (/dev/cecX), so the userspace API will be separate from >> > drm or v4l. >> > >> > And the kernel will have to take care of the core CEC protocol w.r.t. control >> > and discovery due to the HDMI 1.4a requirements. >> > >> > I plan on starting work on this within 1-2 weeks. >> > >> > My CEC presentation can be found here: >> > >> > http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp >> > >> > Regards, >> > >> > Hans >> >> Thanks for quick response! It's good to know that CEC is independent >> with DRM/V4L for my HDMI implementation is FB/lcd-device based. CEC is >> also deserved to have independent management in both hardware signal >> and functionality. Someone also expressed similar thoughts before. >> Will remote control protocal parsing are done in userspace reference >> library? Or not decided yet? > > Are you referring to the remote control pass-through functionality? > I don't know yet whether that will go through a userspace library or > through the RC kernel subsystem, or possibly both. I mean all the feature that can involved in handhold remote control, one touch play, standby, on screen display, etc, such as play/pause/poweroff. I want to mention all non CDC features that can be implemented in user space. They are hard to be covered by any sub-system and user space library is more proper. Just like your metaphor, kitchen sink for CEC. I like your words. > > Most of the other non-system messages will go to a userspace library. Does routing/address is included in system message here? > > But I haven't started coding yet, so it is very early days :-) > > The main thing is that at least I now have a high-level design that > I can start to work with. > > Regards, > > Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
