Re: [GnomeMeeting-list] Sound recording device



Am Samstag, 26. Juli 2003 06:56 schrieb David Mills:
> Gnomemeeting uses /dev/dsp0 for both record and play.  Whereas I need
> /dev/adsp0 for record and /dev/dsp0 for play.
>
> I tried it anyway.  I moved /dev/dsp0 to /dev/dsp0z and created a symlink
> to /dev/adsp0 and then started gnomemeeting.  Look at the device
> preferences showed "/dev/dsp0z".  So it must look for devices with a fixed
> major and minor device number.
>
> David.

The mapping of OSS Devices (/dev/[a]dsp?) to alsa devices (hw:?,?) can be 
changed.
Normally, the first subdevice of the first card (hw:0,0) is mapped to 
/dev/dsp0, the second subdevice of the third card (hw:2,1) is mapped to 
/dev/adsp2.

If you want to have hw:0,1 (which is normally mapped to /dev/adsp0) mapped to 
/dev/dsp0, you should add the folowing to your /etc/modules.conf:

options snd-pcm-oss dsp_map=1

The parameter of dsp_map is an array, the elements are the values for 
different cards. If you have for example dsp_map=3,0, then /dev/dsp0 would 
use the fourth subdevice of the first card, and /dev/dsp1 would use the first 
subdevice of the second card.
There is also an option adsp_map, which does the same for the /dev/adsp? 
devices.

For more details, see:
http://www.alsa-project.org/~iwai/OSS-Emulation.html

Greetings,

Stefan

-- 
Stefan Brüns  /  Kastanienweg 6 - Zimmer 1206  /  52074 Aachen
mailto:lurch gmx li  http://www.kawo1.rwth-aachen.de/~lurchi/
      fax: +49-89-1488204565   phone: +49-160-7532733 

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