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Date:   Fri, 7 Jun 2019 15:02:45 +0200
From:   Pali =?utf-8?B?Um9ow6Fy?= <pali.rohar@gmail.com>
To:     Pavel Machek <pavel@ucw.cz>
Cc:     Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
        "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        Marcel Holtmann <marcel@holtmann.org>
Subject: Re: HCI Set custom bandwidth for AuriStream SCO codec
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On Sunday 19 May 2019 23:21:58 Pavel Machek wrote:
> Hi!
> 
> > > > to be honest, I would rather see WBS implementation finally
> > > > reach PA before we start digging into this.
> > >
> > > First I want to finish improving A2DP codec support in pulseaudio. Later
> > > I can look at HSP/HFP profiles. Ideally it should have modular/plugin
> > > extensible design. So the aim is that adding new codec would be very
> > > simple, without need to hack something related to mSBC/WBC, AuriStream
> > > or any other codec.
> > 
> > Well HSP don't have support for codec negotiation, but yes a modular
> > design is probably recommended.
> > 
> > > But for AuriStream I need to set custom SCO parameters as described
> > > below and currently kernel does not support it. This is why I'm asking
> > > how kernel can export for userspace configuration of SCO parameters...
> > 
> > We can always come up with socket options but we got to see the value
> > it would bring since AuriStream don't look that popular among
> > headsets, at least Ive never seem any device advertising it like
> > apt-X, etc.
> 
> Pali clearly has such device and he is willing to work on it. Surely
> that means it is popular enough to be supported...?

Just put AT+CSRSF=0,0,0,0,0,7 to google search and you would see that
not only I have such device...

So I would really would like to see that kernel finally stops blocking
usage of this AuriStream codec.

-- 
Pali Rohár
pali.rohar@gmail.com