[Bug 14717] resampled sound is horrible

http://bugs.winehq.org/show_bug.cgi?id=14717

--- Comment #162 from Raymond  2011-03-22 21:08:20 CDT ---
(In reply to comment #90)
> (In reply to comment #87)
> > it is meaningless to test those emulated sound card sb16 and ac97 in kvm or
> > virtualbox.
>
> I would agree if the emulated sound card used the driver specifically written
> for it (i.e., something analogous to the VMware video driver). However, the
> emulated card pretends to be a real thing, identical to something manufactured
> in real-world silicon, and uses the drivers meant to be used with the
> real-silicon cards (i.e., the drivers that come with Windows itself). So these
> drivers would send identical output to the emulated and real-world cards and
> thus are suitable for reverse-engineering the resampler, provided that kvm
> itself does no resampling (that's why QEMU_AUDIO_DAC_FIXED_SETTINGS=0).

if you look at winealsa.drv/waveinit.c

wwo.outcaps.wMid = MM_CREATIVE;
    wwo.outcaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
    wwo.outcaps.vDriverVersion = 0x0100;

wwi.incaps.wMid = MM_CREATIVE;
    wwi.incaps.wPid = MM_CREATIVE_SBP16_WAVEOUT;
    wwi.incaps.vDriverVersion = 0x0100;

it is emulating  SB 16 waveout and wavein for all alsa sound cards