Re: cs4248 / thinkpad 755 / 755c , patch suggestions [PATCH]]

[Ryan Underwood <nemesis-lists@icequake.net>]

Hi Takashi,

On Tue, Jul 08, 2003 at 07:37:50PM +0200, Takashi Iwai wrote:
> > On Tue, Jul 08, 2003 at 07:27:06PM +0200, Takashi Iwai wrote:
> > > > The results are pasted below -- what is strange is that aplay identifies
> > > > the file as 11025Hz but apparently the OSS driver thinks it is 8000Hz
> > > > data.
> > >  
> > > ah, i understand.  you cannot cat to /dev/dsp in general.
> > > if you do this, it's supposed to be 8kHz mono samples.
> > 
> > Hmm, limitation of the ad1848 driver, of ALSA OSS emulation, or OSS API?
> 
> IIRC, it's the definition of this OSS device.
> well, i'm not sure this is officially so.
> but at least, /dev/audio is supposed to be in these formats, and we
> initialize /dev/dsp as well.
> 
> btw, for testing the OSS emulation, you can try play command included
> in sox package.

You are correct, play works correctly but catting does not.  It seems,
however, that many OSS drivers support cat a wav file directly to /dev/dsp,
and do the detection of the format parameters internally.  I guess this is not
required by the OSS specification?

-- 
Ryan Underwood, <nemesis at icequake.net>, icq=10317253


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