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Date: Mon, 26 Jun 2017 14:22:24 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Mark Brown <broonie@kernel.org>
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Subject: Re: [Ksummit-discuss] [TECH TOPIC] mobile phones
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Hi!

> > > > 2) How to handle GSM audio?
>=20
> > > What is the issue here?  Isn't GSM audio just another audio source/si=
nk
> > > which user-space can send where-ever it likes?
>=20
> > It is somehow packetized, and has timestamps and gaps in it, I was
> > told. That's why we use /dev/cmt_speech, not ALSA. Probably ALSA
> > should be improved.
>=20
> No, such systems can and do work absolutely fine with the existing
> frameworks.  You just have non-upstream drivers that don't make any
> effort to work within existing frameworks.  Most of the vendors came
> round to doing the right thing on this some years ago.

Take a look at ./drivers/hsi/clients/cmt_speech.c in your favourite
kernel. It was merged in 2010 AFAICT.

									Pavel

--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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