[pulseaudio-discuss] Audio routing on Bluetooth handsfree unit

[Burkhard Stubert]

Hi Lennart,

If I understand you right, my handsfree unit could only receive HFP/HSP
audio from the mobile phone. The handsfree unit could not send any audio to
the mobile. Right?

I'll definitely ping the Bluez guys (again).

Thanks,
Burkhard

2009/12/28 Lennart Poettering <lennart at poettering.net>

> On Mon, 28.12.09 13:08, Burkhard Stubert (burkhard.stubert at googlemail.com)
> wrote:
>
> > Hi chaps,
> >
> > I am trying to build a demo for a handsfree unit (HFU) in a car. The HFU
> > connects via Bluetooth to a mobile phone (the audio gateway or AG in
> > Bluetooth speak). I could then play music on the mobile phone and hear it
> on
> > the car's speakers. The HFU would also take over the phone functionality.
> I
> > could talk over a microphone in the HFU and hear the other person talking
> > over the car speakers.
> >
> > The HFU will run on Linux. I use pulseaudio v0.9.19 as a mediator between
> my
> > app and the Bluetooth audio device.
> >
> > Does pulseaudio support this scenario, where the Bluetooth device acts as
> a
> > source?
>
> Recent PA versions can be both clients and providers of A2DP audio
> (i.e. "Hifi"), however only clients for HFP/HSP audio
> (i.e. "telephony"). However I know that someone mentioned that Intel
> (?) wrote some code to allow PA/Bluez to act as HFP/HSP device, too,
> but that code seems not to be available publically.
>
> It might be a good idea to ping the Bluez folks about this as the core
> HFP/HSP/A2DP implementations comes from them, on which PA then builds.
>
> Lennart
>
> --
> Lennart Poettering                        Red Hat, Inc.
> lennart [at] poettering [dot] net
> http://0pointer.net/lennart/           GnuPG 0x1A015CC4
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