Re: dsnoop slave definition fails on startup

["Clemens Ladisch" <cladisch@fastmail.net>]

Takashi Iwai wrote:
> Lee Revell wrote:
> > On 2/6/07, Takashi Iwai <tiwai@suse.de> wrote:
> > > Add the following line in the slave block
> > >
> > >                 format S32_LE
> > >
> > > Currently, the default format of direct plugins is S16, and most of
> > > ice1712 boards support only 32bit format.
> > 
> > Takashi-san,
> > 
> > This raises an interesting question - how can AC3 passthrough work on
> > these devices?  mplayer and other apps fail because they can't set
> > S16_LE.
> 
> It works simply by wrapping with plug (or linear) layer.
> I thought mplayer already puts that...

Only when it's playing floating point samples.  I'll change that.

> I myself think it's incer to add a format conversion as default in the
> iec958 PCM definition although other may think differently.

Not having such a conversion means that applications have to remember
that they might have to put a "plug:" in front when they want to do
things like AC-3 or 5.1 output.


Regards,
Clemens

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