[alsa-devel] softvol plug-in dependancies?

[Simon Dunn]

Hi Guys

The softvol plug-in, are there any pre-requisites or dependancies
to using this?  I've tried various entries in the /etc/asound.conf
configuration file all with the same result.

I can see the control in alsamixer, once I've run the speaker-test
through it, but cannot adjust any settings.  Trying to run 'alsactl
store 0' results in this error :

.
alsactl: control.c:2437: snd_ctl_elem_value_get_integer: Assertion `idx <  
sizeof
(obj->value.integer.value) / sizeof(obj->value.integer.value[0])' failed.
Aborted
.

Curiously using amixer the device is listed but its properties are
displayed like this

.
Simple mixer control 'PCM Vol',0
   Capabilities: volume
   Playback channels: Front Left - Front Right - Rear Left - Rear Right -  
Front C
enter - Woofer - Side Left - Side Right - Rear Center - ? - ? - ? - ? - ?  
- ? -
? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ?
   Capture channels: Front Left - Front Right - Rear Left - Rear Right -  
Front Ce
nter - Woofer - Side Left - Side Right - Rear Center - ? - ? - ? - ? - ? -  
? - ?
  - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ? - ?
   Limits: 0 - 0
   Front Left: 0 [0%]
   Front Right: 0 [0%]
   Rear Left: 0 [0%]
   Rear Right: 0 [0%]
   Front Center: 0 [0%]
   Woofer: 0 [0%]
   Side Left: 0 [0%]
   Side Right: 0 [0%]
   Rear Center: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]
   ?: 0 [0%]

Any clues as to what's going on here would be much appreciated before
I have to start dissecting the library.

TIA for any hints
Simon

-- 

Simon Dunn, Software Engineer
MPC Data Limited
e-mail: sdunn at mpc-data.co.uk
web: www.mpc-data.co.uk
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