Intel 8x0 and ALSA sound driver

[Eric Pouech]

Nikolay Stefanov wrote:
> Hi,
> 
> I have a SIS SI7012 (Intel 810 chipset) built-in audio card, which turns out 
> to be capable of only 48000Hz sample rate in hardware. The ALSA winmm driver 
> in Wine is hardcoded to use the first hardware pcm device ("hw:0") directly, 
> and therefore fails for any wave format request with a sample rate different 
> than 48000Hz. I have lifted some code from dsound and put together a patch 
> which adds the option to read the device name from the Wine configuration 
> file. As a result I have now got Winamp working (hurray for me!).
> 
> HOWEVER there are still issues - the "default" ALSA device doesn't like the 
> way Wine accesses it through mmap, and also it seems that it is not possible 
> to set the buffer size and period size the way it is done now. Other programs 
> that use ALSA, like aplay and mplayer, don't have this problem. My knowledge 
> of Wine and ALSA is pretty meagre, so can anyone can provide any insight as 
> to how to fix this issue?
> 
> My config file now looks like this
> [alsa]
> ;"Device" = "hw:0"
> "Device" = "default"
> "UseMMAP" = "N"

I assume you're using ALSA 0.9 (not 0.5) and that winamp uses the dsound 
interface

I don't think this is the right think to do:
- from hard coding the driver name, winealsa should enumerate all 
installed alsa drivers, and be prepared to open such a device
- from the mmap configuration, this should be identified at run time, 
not by an obscure configuration option

A+