Re: sb16 duplex fix

Daniel J. Rodriksson (djr@dit.upm.es)
Wed, 14 Oct 1998 10:50:04 +0200

Andrea Arcangeli wrote:
>
> It' s not a fix btw ;-).
>
> On Tue, 13 Oct 1998, Daniel J. Rodriksson wrote:
>
> >in the sb module. I now consider the patch safe so I feel
> >it's time for public release.
>
> The mmap case? I think you should cause mmap() to fail if used on the
> real-time-bit-converted channel.
>
Yes, but since this is in the upper level ( I have already
modified audio.c) it would require to put a new field
in device->dmap ( only in the dmap_out ) to indicate
bit conversion is happening, meaning this device can't
be mmaped.

Another options would be:
Convert the mmapped buffer!
Find out if sb16 can do 16-16 rather than 8-16 or 16-8.

I have the creative pdf describing the hardware but haven't
had a look into it. This next weekend!

> Andrea Arcangeli

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