Firefox/Flash vs. Pulseaudio; Audio can't be directed to the desired device

[Jonathan Ryshpan]

Pulseaudio can control which output device receives main audio output
via 

        kmix->Mixer->Settings->Audio Setup->...

which invokes Phonon.  At this point select the audio stream you want to
divert, "Prefer" the device you want to receive the stream to the top
and "Apply".  This sends the audio stream, the output of Amarok (in my
case) to the desired device, "Built-in Audio Analog Stereo" (in my
case).

EXCEPT that this doesn't work for a stream originating in Firefox/Flash.
How can I redirect this stream?  What am I missing?

Many thanks - jon

[Ian Malone]

On 4 September 2013 18:13, Jonathan Ryshpan <jonrysh(a)pacbell.net&gt; wrote:
>  On Wed, 2013-09-04 at 08:32 +0100, Ian Malone wrote:
> > On 4 September 2013 06:49, Jonathan Ryshpan <jonrysh(a)pacbell.net&gt; wrote:
> > > Pulseaudio can control which output device receives main audio output via
> > >
> > > kmix->Mixer->Settings->Audio Setup->...
> > >
> > > which invokes Phonon.  At this point select the audio stream you want to
> > > divert, "Prefer" the device you want to receive the stream to the top
> and
> > > "Apply".  This sends the audio stream, the output of Amarok (in my
> case) to
> > > the desired device, "Built-in Audio Analog Stereo" (in my case).
> > >
> > > EXCEPT that this doesn't work for a stream originating in Firefox/Flash.
> > > How can I redirect this stream?  What am I missing?
> > >
> >
> > Which version of Fedora are you using? I ask because in F18 KDE the
> > Phonon KDE control only allows adjustment of output per category
> > (music, video, notifications etc). Both the flash plugin and firefox
> > use pulse's alsa plugin for playback, I'm not sure what category they
> > come under, whether they come under the same category or even if
> > applications using the alsa plugin can communicate their category.
> >
> > Anyway, if you've tried all the categories and the overall device
> > control with no luck then try installing pavucontrol. The leftmost
> > 'playback' tab will allow per-stream (actual streams, not categories)
> > control of the device used. However it only shows active streams, so
> > you need to start playback to get the stream you want to appear.
>
>  I am using Fedora-19.  Kmix works just as you describe, only allowing
>  adjustment of output by category.  Here's the version info for Kmix:
>          KMix Version 4.3 Using KDE Development Platform 4.10.5
>  No category controls the alsa plugin, i.e. Firefox/Flash.  (WHY NOT??)
>  
You'd need to ask on the pulseaudio and Phonon development lists. My
guess is that the categories phonon suggests correspond to some of the
'media.role' values:
http://freedesktop.org/software/pulseaudio/doxygen/proplist_8h.html#a06b7...
(with notifications=event and communication=phone), but 'flash'
probably counts as animation (assuming a media role is set at all),
which isn't listed in my audio playback dropdown within phonon.
Have you tried setting the overall 'audio playback' order? I
appreciate that may mess up other stuff for you, but wondering if it
makes a difference.
It might be possible to override the type flash gets, but you'd need
to put it in your .bash_login or something,
http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Develop...
more sensibly it would be fairly straightforward for someone familiar
with the code to add the animation type to phonon, could be filed as a
RFE with KDE.

>  HOWEVER, pavucontrol works perfectly.  Is there any way to make it
> the
>  default mixer for the KDE's audio applet?
>
>  
Don't think so, but you could add a launcher to the panel instead.

-- 
imalone
http://ibmalone.blogspot.co.uk

[g]

hello jonathan,

On 09/04/2013 12:13 PM, Jonathan Ryshpan wrote:
<<>>

>  I am using Fedora-19.  Kmix works just as you describe, only
> allowing
>  adjustment of output by category.  Here's the version info for Kmix:
>           KMix Version 4.3 Using KDE Development Platform 4.10.5
>  No category controls the alsa plugin, i.e. Firefox/Flash.  (WHY NOT??) 
may be you are looking in wrong place?

open firefox 'Preferences', select 'Applications', look there for
'Content Type' you want, click on it. under 'Actions' you will get
a 'selection bar', click on it, select from there.

hth.


-- 

peace out.

in a world with out fences, who needs gates.

sl6.3 linux

tc.hago.

g
.

[Jonathan Ryshpan]

On Wed, 2013-09-04 at 08:32 +0100, Ian Malone wrote:
>  On 4 September 2013 06:49, Jonathan Ryshpan
> <jonrysh(a)pacbell.net&gt; wrote:
>  > Pulseaudio can control which output device receives main audio output via
>  >
>  > kmix->Mixer->Settings->Audio Setup->...
>  >
>  > which invokes Phonon.  At this point select the audio stream you want to
>  > divert, "Prefer" the device you want to receive the stream to the top and
>  > "Apply".  This sends the audio stream, the output of Amarok (in my case)
> to
>  > the desired device, "Built-in Audio Analog Stereo" (in my case).
>  >
>  > EXCEPT that this doesn't work for a stream originating in Firefox/Flash.
>  > How can I redirect this stream?  What am I missing?
>  >
>  
>  Which version of Fedora are you using? I ask because in F18 KDE the
>  Phonon KDE control only allows adjustment of output per category
>  (music, video, notifications etc). Both the flash plugin and firefox
>  use pulse's alsa plugin for playback, I'm not sure what category they
>  come under, whether they come under the same category or even if
>  applications using the alsa plugin can communicate their category.
>  
>  Anyway, if you've tried all the categories and the overall device
>  control with no luck then try installing pavucontrol. The leftmost
>  'playback' tab will allow per-stream (actual streams, not categories)
>  control of the device used. However it only shows active streams, so
>  you need to start playback to get the stream you want to appear. 
I am using Fedora-19.  Kmix works just as you describe, only allowing 
adjustment of output by category.  Here's the version info for Kmix:
        KMix Version 4.3 Using KDE Development Platform 4.10.5
No category controls the alsa plugin, i.e. Firefox/Flash.  (WHY NOT??)

HOWEVER, pavucontrol works perfectly.  Is there any way to make it the
default mixer for the KDE's audio applet?

[Ian Malone]

On 4 September 2013 06:49, Jonathan Ryshpan <jonrysh(a)pacbell.net&gt; wrote:
>  Pulseaudio can control which output device receives main audio output
> via
>
>  kmix->Mixer->Settings->Audio Setup->...
>
>  which invokes Phonon.  At this point select the audio stream you want to
>  divert, "Prefer" the device you want to receive the stream to the top and
>  "Apply".  This sends the audio stream, the output of Amarok (in my case) to
>  the desired device, "Built-in Audio Analog Stereo" (in my case).
>
>  EXCEPT that this doesn't work for a stream originating in Firefox/Flash.
>  How can I redirect this stream?  What am I missing?
>  
Which version of Fedora are you using? I ask because in F18 KDE the
Phonon KDE control only allows adjustment of output per category
(music, video, notifications etc). Both the flash plugin and firefox
use pulse's alsa plugin for playback, I'm not sure what category they
come under, whether they come under the same category or even if
applications using the alsa plugin can communicate their category.

Anyway, if you've tried all the categories and the overall device
control with no luck then try installing pavucontrol. The leftmost
'playback' tab will allow per-stream (actual streams, not categories)
control of the device used. However it only shows active streams, so
you need to start playback to get the stream you want to appear.

-- 
imalone
http://ibmalone.blogspot.co.uk