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From:   Yu Liu <yudiliu@google.com>
Date:   Thu, 20 Aug 2020 10:20:36 -0700
Message-ID: <CAHC-ybxshy5zmkAku6suicvjO0Ngofp0+gRyYLX_RXr9YhU94Q@mail.gmail.com>
Subject: Re: [RFC PATCH v2 1/1] adapter - D-Bus API for querying the adapter's capabilities
To:     Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc:     "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
        ChromeOS Bluetooth Upstreaming 
        <chromeos-bluetooth-upstreaming@chromium.org>,
        Archie Pusaka <apusaka@chromium.org>,
        Sonny Sasaka <sonnysasaka@chromium.org>,
        Marcel Holtmann <marcel@holtmann.org>
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Friendly ping for comments from Marcel. Thanks.


On Mon, Aug 17, 2020 at 4:17 PM Luiz Augusto von Dentz
<luiz.dentz@gmail.com> wrote:
>
> Hi Marcel,
>
> On Mon, Aug 17, 2020 at 4:07 PM Yu Liu <yudiliu@google.com> wrote:
> >
> > From: Archie Pusaka <apusaka@chromium.org>
> >
> > Initially this is introduced to query whether WBS is supported by the adapter,
> > the API is generic enough to be extended to support querying others in
> > the future.
> >
> > Reviewed-by: sonnysasaka@chromium.org
> >
> > Signed-off-by: Yu Liu <yudiliu@google.com>
> > ---
> >
> > Changes in v2:
> > - Return an array of strings instead of a dict
> >
> > Changes in v1:
> > - Initial change
> >
> >  doc/adapter-api.txt | 12 ++++++++++++
> >  1 file changed, 12 insertions(+)
> >
> > diff --git a/doc/adapter-api.txt b/doc/adapter-api.txt
> > index 1a7255750..8fbcadb54 100644
> > --- a/doc/adapter-api.txt
> > +++ b/doc/adapter-api.txt
> > @@ -204,6 +204,18 @@ Methods            void StartDiscovery()
> >                                          org.bluez.Error.NotReady
> >                                          org.bluez.Error.Failed
> >
> > +               array{string} GetCapabilities()
> > +
> > +                       This method returns a list of supported
> > +                       capabilities that is populated when the adapter
> > +                       initiated.
> > +
> > +                       Possible values:
> > +                               "wbs" - Wide band speech
>
> Btw, should we stick to use wbs terminology here, or we should
> actually use the HCI feature/command, because wbs has actually to be
> implemented by the HFP afaik this is only indicating that the
> controller is able to notify packets drops, etc, with use of erroneous
> command. Perhaps we should actually use the term PLC (Packet Loss
> Concealment) instead since that seems to be the real capability here,
> afaik WBS does not actually require PLC.
>
> > +
> > +                       Possible errors: org.bluez.Error.NotReady
> > +                                        org.bluez.Error.Failed
> > +
> >  Properties     string Address [readonly]
> >
> >                         The Bluetooth device address.
> > --
> > 2.28.0.220.ged08abb693-goog
> >
>
>
> --
> Luiz Augusto von Dentz