Re: OSS emulation question

[Adrian McMenamin <adrian@mcmen.demon.co.uk>]

On Thu, 2006-03-30 at 14:55 +0200, Clemens Ladisch wrote:
> Adrian McMenamin wrote:
> > My mixer code is currently not working because my device does not report
> > the availability of SOUND_MASK_VOLUME to the oss emulation code.
> 
> ALSA's OSS emulation automatically computed the mask value.
> 
> > In the olden days I'd just write the ioctl - presumably I don't have to
> > do that with ALSA? How do I get round it?
> 
> See snd_mixer_oss_build() in core/oss/mixer_oss.c for a list of mixer
> control names that get mapped to OSS controls (e.g., "Master Playback
> Volume"/"...Switch" would be mapped to SOUND_MIXER_VOLUME).
> 
> 
I have implemented master volume and master switch but all I get is:

audio/gain: setable Volume/PCM-Level not supported by your audio device:
0000


what is the minimum set of controls I need to have settable volume
in /dev/mixer (ie oss emulation)?



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