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Date:   Sun, 9 Feb 2020 14:02:43 +0100
From:   Pali =?utf-8?B?Um9ow6Fy?= <pali.rohar@gmail.com>
To:     Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc:     "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
Subject: Re: bluez: Export SDP "Remote audio volume control" item for HSP
 profile
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On Friday 13 December 2019 00:03:14 Pali Rohár wrote:
> On Thursday 12 December 2019 21:42:27 Luiz Augusto von Dentz wrote:
> > Hi Pali,
> > 
> > On Thu, Dec 12, 2019 at 7:31 PM Pali Rohár <pali.rohar@gmail.com> wrote:
> > >
> > > Hello!
> > >
> > > According to HSP 1.2 specification, section 4.7 Remote Audio Volume
> > > Control, Support for remote audio volume control is optional, so an
> > > implementation may support none, either, or both of the controls for
> > > microphone volume and speaker volume.
> > >
> > > According to HSP 1.2 specification, section 5.3 SDP Interoperability
> > > Requirements, bluetooth device with HSP profile announce via SDP "Remote
> > > audio volume control" field information if device itself supports volume
> > > control.
> > >
> > > But currently I did not found any way how to access "Remote audio volume
> > > control" SDP field in (pulseaudio) application as bluez does not export
> > > it.
> > >
> > > Can you please export this field? E.g. for HFP profile all optional
> > > features from SDP are passed to NewConnection() DBus method via
> > > fd_properties dictionary under Features key. Could you export that
> > > "Remote audio volume control" bit for HSP profile in Features key?
> > >
> > > And in same way, this needs to be handled also in RegisterProfile() DBus
> > > method.
> > 
> > Do you have a use case in mind?
> 
> Yes, checking in pulseaudio if remote side announce that supports remote
> volume control or not. And based on this switch to software volume
> level.

Hello Luiz! Is it is possible to export this field?

-- 
Pali Rohár
pali.rohar@gmail.com