On Mon, 5 Jan 2004, Takashi Iwai wrote:

> At Mon, 5 Jan 2004 10:29:01 -0600 (CST),
> David Lloyd wrote:
> > 
> > On Sun, 4 Jan 2004, Paul Davis wrote:
> > 
> > > >I'm working on changing DMIX to allow clients to open the capture stream.  
> > > 
> > > i don't get it. dmix is for playback, not capture. what would be the
> > > semantics of this?
> > 
> > That is exactly the problem!  DMIX is for playback.  DSNOOP is for 
> > capture.  Where is the module that is for both?  Why, oh why, did they not 
> > simply make ONE MODULE in the first place??
> 
> patch welcome ;)
> 
> well, more practical answer is that capturing the playback would need 
> copy of the playback data to the capture buffer.  meanwhile, the
> implementation of dmix and dsnoop is basically only the multiplex
> access of a single hardware buffer.  it's not "copying" of data.

Nonononono.  Nobody is understanding what I want!

I have application A that needs to open payback and capture streams 
because it's a two-way communications program.  Application B is a game 
that uses playback only.  I want to use these both at the same time.

Problem is both applications use OSS emulation.  They both work with aoss, 
but the two-way program won't initialize sound when dmix is loaded because 
it's not allowed to open capture stream.  See my problem?  I can't put two 
different plugins in my audiorc and expect an OSS application to 
understand it.  I am not interested in capturing the playback stream!  I 
just want to have more than one program be able to use /dev/dsp for both 
input and output...

- D


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