Em Mon, 14 Mar 2016 14:28:51 -0300 Mauro Carvalho Chehab mchehab@osg.samsung.com escreveu:
Em Mon, 14 Mar 2016 14:41:16 +0100 Hans Verkuil hverkuil@xs4all.nl escreveu:
I have these topics:
- Continue MC connector entity discussion
Although I'm not working on it, I think we should also discuss:
- support for dynamic removal/addition at the core and MC locking.
- properties API (assuming that Sakari would join us and/or has something ready for discussions).
One more topic: PAD identification with the new API. We need to provide a way for userspace to be able to identify what kind of signal is associated to each PAD (video, vbi, audio, etc).
We started discussing it together with connectors, but this was also postponed.
We need that for more complex devices where the number of PADs can be different, depending on the device type. This is commonly found on ALSA, where mixers have multiple channels. Each channel has a name. One such example is emp202 AC97 chipset, commonly found on em28xx-based devices (see page 3): http://pdf.dzsc.com/20090227/200902170324029859.pdf
On this chip:
- input pads: PCM Out, PC-beep, phone, mic1, mic2, line-in, cd-in, video-in, aux-in. - output pads: SPDIF Out, HP-Out, Line-Out, Mono-out, PCM in.
Different AC97 chips have a different number of PADs, with different names for each PAD input. For example, this one (see page 8):
http://alsa-project.org/~james/datasheets/sigmatel/stac9758ds.pdf
has: - input pads: PC-Beep, phone, cd, aux, line in, SPDIF input, mic1, mic2 - ouptut pads: hp_out, line_out, mono_out
The actual number/name of the pads are obtained at runtime by the audio driver. So, it is not possible to hardcode the number of PADs per entity.
- CEC status update (to be confirmed)
- A short demo of the qdisp utility I am working on
Laurent, would it make sense to discuss your work on the request API?
Another possible topic:
media-ctl vs mc_nextgen_test: having two utilities makes me very unhappy!
I think we have a fairly small group this time, so I am not sure if we need a full fledged agenda. If the group will be larger than expected, then please let me know and I will prepare a proper agenda.
Even with a small group of people, we need to have an agenda, as others might be interested. I suspect that we'll still have ~10 people there.
Regards, Mauro
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