At Mon, 06 Nov 2006 21:35:41 +0100,
Volker Schroer wrote:
>
>
> >> .
> >>
> >> I set the card to FLOAT_LE format.
> >>
> >
> > What did you set exactly? Set hw_params calls with format = FLOAT_LE
> > from application?
> >
> Yes, this is my .asoundrc
> pcm.LinPSK_card {
> type hw
> card M5455
> }
> pcm.LinPSK {
> type plug
> slave.pcm LinPSK_card
> }
> and I open LinPSK.
> >> If I read the samples with snd_pcm_readi, I get invalid values ( 10*e34
> >> ) from time to time, although the result code of readi does not signal
> >> any errors.
> >>
> >> Is there a way to check if the read values are valid inside the driver
> >> ? I think, there is a problem inside the driver. Using a delta 44
> >> soundcard, the problem is gone.
> >>
> >
> > I guess it's rather a conincidence that it worked with another card.
> > Or, possibly, conversion between S16 and float in alsa-lib plugin
> > might be broken.
> >
> >
> Well, but not all samples contain bad values. Only after some times
> some bad values appear.
Hm, then the problem could be in the rate conversion.
M5455 uses only 48kHz (by some reason). Try to run with 48kHz.
Takashi
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