[Qemu-devel] [PATCH] PC speaker emulation (fixed)

[Joachim Henke]

Thanks a lot for your help! I wasn't aware that AUD_write could  
return zero. Seems that I was just lucky, it didn't do that with  
44100 Hz sample rate (c:

Now it works fine with 32000 Hz, and I really encourage people  
(especially PC users) to test the attached patch. Call QEMU with the  
switch '-soundhw pcspk', and try to make some noise.

Regards,
Jo.


malc wrote:
> b. Once AUD_write return zero one should stop writing untill some  
> space
>    becomes available (for all intents and purposes after callback
>    will be called next time)
>
> Item b is probably why it hangs: you try to write N bytes, AUD_write
> returns zero, yet you are tring again immediately - ad nauseam. We
> have only one thread - hence audio can not push the data out of
> internal buffers into the host, and what you get is an infinite loop.

--
Joachim Henke
http://he-jo.net/

pcspeaker.diff.gz
Description: GNU Zip compressed data