[pulseaudio-discuss] How to set media role variable ??

[sathishkumar sivagurunathan]

Sorry, there was a mistake go one of lines. The low priority stream is just
getting muted. It is not paused.

Thanks,
Sathish
On Nov 28, 2013 2:48 PM, "sathishkumar sivagurunathan" <
sathish1000 at gmail.com> wrote:

> Thanks Tanu for the reply,
>
> I wanted to test the module "module role cork" . So I started two media
> players using the gst launch tool. One had media role as phone and other
> had media role as music. When I tested using the "module role cork", it
> worked good. The player with media role "music" was paused.
>
> As the next step, I tested with two different players.
>
> 1) gst launch tool -- media role = phone
>
> 2) qt based application ( runs on phonon - gstreamer framework ) -- with
> media role as music.
>
> When the "module role cork" is used, the music stream is just muted but
> not paused.
>
> I tried with a few other players too. The low priority stream is just
> paused.
>
> I could not understand where the difference is coming from.
>
> Can you help me with this.
>
> Thanks,
> Sathish
>  On Nov 22, 2013 10:38 PM, "Tanu Kaskinen" <tanu.kaskinen at linux.intel.com>
> wrote:
>
>> On Wed, 2013-11-20 at 10:57 -0500, sathishkumar sivagurunathan wrote:
>> > Thanks Tanu for the detailed reply..
>> >
>> > A) I would great if whatever I am intending to do could be added to
>> > pulseaudio. But I feel what I need to do is already implemented in the
>> > module "Module-role-cork" --> Essentially priority assignment between
>> the
>> > streams played by pulseaudio.
>>
>> module-role-cork has very primitive priority model: one role is defined
>> to have "high" priority, and some other roles can have "low" priority.
>> Streams that have some role that has neither "high" or "low" priority
>> are ignored. So, module-role-cork works if this limited model is good
>> enough for you. Of course, module-role-cork could perhaps be improved if
>> necessary.
>>
>> > B) The only differentiator is that instead of the (media player or
>> skype)
>> > application assigning the media.role variable, I want the Audio Manager
>> or
>> > Routing system (to which the other applications like skype and media
>> player
>> > register) to manage assignment of this variable..
>> >
>> > C) I have a question in this regard. I have listed it below.
>> >
>> > So "*if I can keep the Module-role-cork running by adding it to the
>> > default.pa <http://default.pa> file, I hope that assignment of the
>> media
>> > role variable will take care of priority (what is to be corked and
>> > uncorked).*" -- Is this assumption right ??
>>
>> Yes.
>>
>> > D) So the module intent to write has the following aim :-
>> >
>> >      Based on the Audio Manager or routing mechanism status, media.role
>> > priority of the particular audio stream needs to be assigned..
>>
>> Exactly.
>>
>> > *E) I have a few doubts in my mind abt the way in which the module can
>> be
>> > called*. In your reply, you have mentioned that the module can call and
>> > consult the Audio Manager. Is the other way possible. In order words,
>> >
>> > *Is their by any chance the module can loaded from my routing mechanism
>> > code itself.. *
>> >
>> > From the simple test I could carry out, the command line arguments for
>> this
>> > prioritizing functionality seems to go like this
>> >   "*pactl load-module <module-name>*". Is there by any chance I can load
>> > these modules from a C++ program.
>>
>> pactl is a normal pulseaudio client. Whatever pactl does you can do too
>> using the C API: http://freedesktop.org/software/pulseaudio/doxygen/
>>
>> > F) I also tried to carry out a few simple test to check how the routing
>> > works in pulse audio when media player is playing when a phone call over
>> > skype arrives.. But in ubuntu 12.10, the MODULE-ROLE-CORK command doesnt
>> > seem to working. I am using pulseaudio 2.0.
>> >
>> > I had tried in ubuntu 12.04 LTS. the module "MODULE-CORK-MUSIC-ON-PHONE"
>> > seems to be working good for me (pulseaudio 1.1). *Is that I should
>> upgrade
>> > to the latest ubuntu version 13.10 and check..*
>>
>> module-cork-music-on-phone was renamed to module-role-cork in 2.0.
>>
>> > G) The command format I used in pulseaudio 2.0 to load the
>> > "module-role-cork" is like this
>> >
>> > *    pactl load-module module-role-cork trigger_roles="phone"
>> > cork_roles="video"*
>> >
>> >     Is this the right way to do this..
>>
>> The right way to do what? If you want to load module-role-cork with
>> pactl, then yes, that's the way to do it.
>>
>> --
>> Tanu
>>
>>
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