Return-Path: From: Sander van Grieken To: linux-bluetooth@vger.kernel.org Subject: Re: AVRCP future Date: Thu, 2 Sep 2010 23:18:04 +0200 References: <201009011603.02153.sander@outrightsolutions.nl> <201009021020.50162.sander@outrightsolutions.nl> In-Reply-To: MIME-Version: 1.0 Cc: Luiz Augusto von Dentz Content-Type: Text/Plain; charset="iso-8859-1" Message-Id: <201009022318.04177.sander@outrightsolutions.nl> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: On Thursday 02 September 2010 14:56:10 you wrote: > On Thu, Sep 2, 2010 at 11:20 AM, Sander van Grieken > > I was more thinking of exposing a dbus interface that allows a player (or any TG) to > > register itself as a TG, then acting on signals/sending events/responses. > > That could be done, actually this is a similar idea as we are planning > to have[1] for replacing our audio ipc, but for things like progress > we would really need to cache it since most device Ive seem keep > polling this. > Another possibility is to use MPRIS and PulseAudio > together, but the spec of MPRIS need some work right now the player > assume some name with a prefix e.g: org.freedesktop.MPRIS which is not > that nice, perhaps making MPRIS a separate daemon would make more > sense. > > This means that for freedesktop we have: > > BlueZ <-> PulseAudio <-> MPRIS > > For the rest: > > BlueZ <-> Player/whatever > > If that is done in PulseAudio we could probably associate the metadata > directly with the stream using MPRIS, if it is up to the player then > we don't care they can set this information directly via some D-Bus > API that is yet to be defined, which wouldn't require player to > implement MPRIS spec. Joao Paulo has something already so I guess we > can start from there[2]. > > [1] http://gitorious.org/~vudentz/bluez/vudentzs-clone/commits/endpoint > [2] http://git.profusion.mobi/cgit.cgi/jprvita/bluez/log/?h=avrcp_metadata Thanks Luiz, I'm aware of Jo?o's work. In fact I've already merged his work into my branch, he exposed much of the AVRCP controls. I see the benefit of MPRIS+PulseAudio for AVRCP 1.3, but for 1.4 MPRIS is just too limited. Also, it's only for audio players [1], while AVRCP also specifies (TV) menu controls and such, so it exceeds the scope of MPRIS. Your git looks interesting! Added to remotes :) grtz, Sander [1] http://xmms2.org/wiki/Media_Player_Interfaces#Overview