Re: [PATCH BlueZ 1/4] doc/media-api: Add RegisterApplication method

From: "Pali Rohár" <pali.rohar@gmail.com>
To: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: "Pasi Kärkkäinen" <pasik@iki.fi>,
	"linux-bluetooth@vger.kernel.org"
	<linux-bluetooth@vger.kernel.org>
Subject: Re: [PATCH BlueZ 1/4] doc/media-api: Add RegisterApplication method
Date: Sun, 6 Oct 2019 20:02:52 +0200	[thread overview]
Message-ID: <20191006180252.7bfil4lblfzakzyy@pali> (raw)
In-Reply-To: <20191006111700.42kcgojrzwru2et6@pali>

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On Sunday 06 October 2019 13:17:00 Pali Rohár wrote:
> On Sunday 06 October 2019 14:14:18 Luiz Augusto von Dentz wrote:
> > Hi Pali,
> > 
> > On Sun, Oct 6, 2019 at 1:56 PM Pali Rohár <pali.rohar@gmail.com> wrote:
> > >
> > > On Sunday 06 October 2019 13:53:37 Luiz Augusto von Dentz wrote:
> > > > Hi Pali,
> > > >
> > > > On Sun, Oct 6, 2019 at 1:05 PM Pali Rohár <pali.rohar@gmail.com> wrote:
> > > > >
> > > > > On Thursday 03 October 2019 21:18:55 Pasi Kärkkäinen wrote:
> > > > > > Hi,
> > > > > >
> > > > > > On Thu, Aug 29, 2019 at 10:05:13PM +0200, Pali Rohár wrote:
> > > > > > > On Thursday 29 August 2019 15:57:34 Pasi Kärkkäinen wrote:
> > > > > > > > Pali: How does it look with porting the PA patches to use the new interfaces?
> > > > > > >
> > > > > > > Hello, I have not had a time yet to play with these pulseaudio patches
> > > > > > > and porting to the new interface. I guess that I could have more free
> > > > > > > time in the last week of next month.
> > > > > > >
> > > > > >
> > > > > > It seems BlueZ 5.51 has been released meanwhile (http://www.bluez.org/release-of-bluez-5-51/)
> > > > > > So now at least the new interfaces are in a released bluez version.
> > > > >
> > > > > Ok! Today I have looked at this new Bluez API, but seems that there is
> > > > > not only missing some examples or usages with libdbus-1, but also
> > > > > documentation. I have tried to find something how to register endpoints
> > > > > throw GetManagedObjects() via libdbus-1, but seems that there is no
> > > > > usage of it and also unusable documentation for it in libdbus-1. So
> > > > > currently I'm stuck how to use this exotic API in pulseaudio...
> > > >
> > > > It is just another D-Bus method, the only difference is that it
> > > > carries the entire object tree, btw I did add an example of how to
> > > > register Endpoints in python:
> > > >
> > > > https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/test/example-endpoint
> > >
> > > Now I found this python example and currently I'm doing observations and
> > > "reverse-engineering" how it is working and how this example behaves on
> > > D-Bus. I think I understood it now.
> > 
> > One important detail is that RegisterApplication shall not block since
> > the daemon will call GetManagedObjects the D-Bus mainloop must be able
> > to process messages.
> 
> Ok. I'm already using non-blocking / async processing as blocking
> variants can cause more problems in event-orientated applications.

Now I implemented it in pulseaudio. New patches are now available in
pulseaudio-discuss@lists.freedesktop.org mailing list.

> > > > You can also have a look at how our gdbus internal library (uses
> > > > libdbus) utilize it:
> > > >
> > > > https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/gdbus/client.c#n1269
> > > >
> > >
> > > --
> > > Pali Rohár
> > > pali.rohar@gmail.com
> > 
> > 
> > 
> 

-- 
Pali Rohár
pali.rohar@gmail.com

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