Re: [Plib-users] i810_audio with oss?

[ovrundr <ov...@ya...>]

--- Chris Jewell <vs0...@li...> wrote:

> I have an SIS7012 soundcard in my machine running RedHat 8.0 that
> uses the 
> i810_audio driver together with the AC97_codec module.  I am trying
> to get 
> sound in FlightGear 

> 
> Many thanks,
> 
> Chris Jewell

I have a Realtek ALC650 with a AC'97 chipset that uses 
the same drivers.

I've done a little debug and found the following:

in slDSP::open

stereo = ioctl ( SOUND_PCM_WRITE_CHANNELS, _stereo ? 2 : 1 ) >= 2 ;
bps    = ioctl ( SOUND_PCM_WRITE_BITS, _bps ) ;

input values:
SOUND_PCM_WRITE_CHANNELS = -1073459194
SOUND_PCM_WRITE_BITS = -1073459195
_stereo = 1
_bps = 8

return value from stereo = 2
return value from bps = 16

Which leads to:
if ( getBps() != 8 )
slScheduler: Needs a sound card that supports 8 bits per sample.
and
if ( getStereo())
slScheduler: Needs a sound card that supports monophonic replay.

Don't know if this driver will not handle 8 bit mono 
or maybe the ioctl call is using wrong values.

Does anyone know the answer or where I can go next to debug futher?

Rick






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