Re: [Qemu-devel] [PATCH 00/12] Audio backend cleanup

[Michael Tokarev]

02.06.2015 11:08, Gerd Hoffmann wrote:
> On Mo, 2015-06-01 at 16:38 +0300, Michael Tokarev wrote:
>> 01.06.2015 16:23, Kővágó, Zoltán wrote:
>>> This series of patch removes the following audio backends:
>>> esd, fmod, sdl, winwave.
>>
>> Why do you remove sdl backend?
>>
>> This is my preferred backend so far, it works better
>> than all other backends available to me...
> 
> What other backends can you use?  What are the problems?
> Do you use sdl audio together with sdl ui?

I haven't had a chance to check, planned to do that
today morning but had some other things to do.  Will
check asap.

Yes, I use sdl audio with sdl ui, sdl1 version (since
sdl2 had its shortcomings in qemu, not all functionality
worked).

I also tried alsa, oss and pa, with these audio was more
distorted than with sdl.  Sdl version sounds cleanly, while
alsa and pa, at least in the past, and at least if memory
serves me right, sounded like a if a good portion of noize
has been mixed in with sound, or like when sound is with
quick monmentary drops which happens at high frequency
(maybe 200Hz).

SDL audio has been the default in Debian for at least two
debian releases because of that, we explicitly used
--audio-drv-list=sdl,... to list sdl first.  Now we have
pa first, but I don't really remember why we changed it.

But I have QEMU_AUDIO_DRV=sdl in my ~/.profile for a very
long time.  Not that I use audio all the time, only rarely,
but I never had any issues especially with sdl (this is
ofcourse NOT to say that there are no probs in there :)

Thanks,

/mjt