i810 audio fixes 1/2

Robert Reif reif at earthlink.net
Sat Mar 27 13:36:31 CST 2004

I'm not sure deviating from the Microsoft behavior is correct. The default
is 22khz 8 bit mono unless the hardware doesn't support it. Transgaming
is correct.

Another problem is that drivers support different formats in different  modes.
Because of software emulation in alsa, a driver may appear to support any
but then fail when you try to mmap it because then software conversions can't
come into play.  This is also a problem with OSS emulation in alsa on this type

of hardware.

Roderick Colenbrander wrote:

> Hi,
> This is the first of two patches that will fix some problems on soundcards
> using the i810 audio codec. The main probem with this soundcard is that it
> only supports a frequency of 48kHz in 16bit stereo mode.
> This first patch to dsound queries if the card supports 16bit and if so it
> uses it, else it uses 8bit. Further it also detects if the card supports
> stereo or not. The patch was inspired by one from transgaming to rewind but
> that patch did a bit the opposite (defaulting to 8bit ..).
> Roderick Colenbrander
>   ------------------------------------------------------------------------
>              Name: dsound
>    dsound    Type: text/x-diff
>          Encoding: 7bit

More information about the wine-devel mailing list