[gst-devel] level meter for alsa
Stefan Kost
ensonic at hora-obscura.de
Thu Jan 10 20:06:13 CET 2008
hi,
Lutz Müller schrieb:
> Hello!
>
> I'd like to implement level meters within gnome-volume-control (mock-up
> attached). But in order to be able to implement that, the current audio
> levels on alsa devices need to be advertised by GStreamer.
>
> alsa-tools uses snd_ctl_elem_read and snd_ctl_elem_value_get_integer to
> read the current level on a specific alsa device. I couldn't find a
> reference to these functions in gst-plugins-base/ext/alsa.
>
> Can you point me to the right GStreamer element/interface that can be
> used by frontends to monitor the audio level on alsa devices (if it
> exists)?
IMHO it would require extending the GstMixer. I would like to see this feature,
as it helps to see on which channel something is happening.
Stefan
>
> Regards
>
> Lutz
>
>
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