[gst-devel] Getting default audio source and sink (devices) in the GNOME-desktop.

[Cai Yuanqing]

  Hi Osmo:

I don't quite clear where do you want to use this functions call and 
here are some informations I can give to:
1.You can get default sink and source in pulseaudio by functions:
> pa_sink* pa_namereg_get_default_sink(pa_core *c)
> pa_source* pa_namereg_get_default_source(pa_core *c)
These 2 functions will return you the pointer of default sink or 
source,thus you can get name by sink.name or source.name.

You can also check this informations in pacmd:
$ pacmd
<<< list-sinks
<<< list-sources

the first one is the default device in generally.

2.In the Gstreamer said I don't know very well,seems that pulsesink and 
pulsesrc have no default device,maybe you need to set them first and the 
get these arguments as others by:
> g_object_get(G_OBJECT(pulsesink),"device-name",dev_name,NULL);

Hope this helps :-)


On 01/09/2011 09:36 PM, Osmo Antero Maatta wrote:
> Hello,
>
> How can I read the default values for audio-sink and audio-source in
> Linux/GNOME-desktop.
> These values (device names) are set in the GNOME's gnome-volume-control
> program.  Start
> $ gnome-volume-control
> Picture: http://bildr.no/view/796255 showing both [Input] and [Output]
> pages.
>
> The values are stored in user's $HOME/.pulse/ directory.
>
> $ ls  ~/.pulse/
> b3b6877727df4f4ae34dba2b00000009-default-sink
> b3b6877727df4f4ae34dba2b00000009-default-source
> ...
>
> $ cat ~/.pulse/b3b6877727df4f4ae34dba2b00000009-default-source
> alsa_output.pci-0000_04_02.0.analog-stereo
>
> $ cat ~/.pulse/b3b6877727df4f4ae34dba2b00000009-default-sink
> alsa_input.pci-0000_00_1b.0.analog-stereo
>
> Is there a function call in GStreamer or Pulseaudio to get these values,
> or should I simply read the files.
>
> Kindly
>    Moma Antero
>
>
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-- 
B.R

Cai Yuanqing