Middle-clicking on the Mixer panel item of a non-mute-able track

[Jannis Pohlmann]

On Tue, 10 Mar 2009 19:28:40 +0200
Jarno Suni <j_suni at yahoo.co.uk> wrote:

> On Tue, 10 Mar 2009 16:24:51 +0100
> Jannis Pohlmann <jannis at xfce.org> wrote:
> 
> > On Tue, 10 Mar 2009 16:47:25 +0200
> > Jarno Suni <j_suni at yahoo.co.uk> wrote:
> > 
> > > On Tue, 10 Mar 2009 03:16:09 +0100
> > > Jannis Pohlmann <jannis at xfce.org> wrote:
> > > 
> > > > You and I
> > > > even were in the GStreamer IRC channel and people told you that
> > > > this is a known issue at their end.
> > > 
> > > Yes, we were online there at the same time. After I asked there,
> > > if there is a way to know, whether a playback track is mute-able
> > > or not, some <__tim> told that there is a patch for
> > > gstreamer/gst-plugins-base that adds information about whether a
> > > mixer track is mute-able or not (or so I understood it). I
> > > notified you about it, too. And you were happy then, remember. 
> > 
> > Oh, so I was happy? Right ... actually, its good to know that there
> > is a way to check whether a mixer track supports muting or not. It
> > doesn't really solve the problem though.
> 
> I checked my GStreamer IRC log, but I couldn't find what "known
> issue at their end" you are possibly referring to, if that mute-able
> flag thing is not it.

That's because you don't understand the things you're dealing with.
There obviously is a flag GST_MIXER_TRACK_NO_MUTE since GStreamer
0.10.23 which one can use to determine whether a track supports muting
or not. The problem is that it isn't really used anywhere. I checked
the ALSA backend which is probably the most commonly used GstMixer
provider and it doesn't use it. 

So even though that flag exists, it's not a reliable source for
determining whether a track supports muting or not. 
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