At Tue, 24 Jul 2007 14:30:29 -0500,
Timur Tabi wrote:
>
> Takashi Iwai wrote:
>
> >> #define SNDRV_PCM_RATE_ALL (SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATES_5512)
> >
> > I'd prefer 5512_19200. The word "ALL" may vary in future.
>
> That's the point. It's supposed to indicate all sample rates no matter what they are or
> will be. However, that may be a moot point ...
>
> > Anyway, the bits SND_PCM_RATES_[0-9]* are ignored when _CONTINUOUS or
> > _KNOT is passed. Only the values in rate_min/rate_max fields are
> > referred as actual min/max rates.
>
> Ah! I wish this stuff were documented in the source files.
>
> So can I do this?
>
> static const struct snd_pcm_hardware mpc86xx_pcm_hardware = {
>
> .rates = SNDRV_PCM_RATE_CONTINUOUS,
> .rate_min = 1,
> .rate_max = (unsigned int) -1,
In theory, yes, but these rate_min and rate_max are nothing but
confusing in practice. Your hardware won't support definitely such
rates, but the application can't know. Set some reasonable values
there.
Takashi
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