[alsa-devel] Backported sbxfi driver, possible fix

[Takashi Iwai]

At Tue, 28 Oct 2008 01:10:43 +0100,
Bjoern Olausson wrote:
> 
> On Mon, Oct 27, 2008 at 07:28, Takashi Iwai <tiwai at suse.de> wrote:
> > It'd be helpful if someone can summarize the working and non-working
> > cases.  For example,
> >
> > global info:
> > 1. sbxfi driver version (date & HEADs)
> > 2. base_rate value
> > 3. system details (x86-64, distro, kernel version, etc)
> >
> > for each app:
> > A. Application name / version
> > B. working or not-working, problem descriptions
> > C. ALSA or OSS (you can see it in /proc/asound/card*/pcm0/sub0/hw_params)
> > D. period_size and buffer_size (ditto, or in kernel message)
> > E. any special options
> >
> > Maybe also nice on Wiki...
> >
> >
> > thanks,
> >
> > Takashi
> >

Forgot to ask: which SBXFI model?  The product name, PCI ID, PCI SSID,
and /proc/asound/cards entry please.


> 2. base_rate value
> 	rate: 96000 (96000/1)

What about base_rate=48000?

BTW, I changed now base_rate to 48000 for testing as I got more
positive results with it.

> A)	MPlayer dev-SVN-r27725-4.1.2
> B)	Working, but horrible, crackeling sound at samplingrate 11025Hz
> 22050Hz 44056 44100 47250 5000(less than the others) 50400 8000 88200
> (3200, 48000 and 96000 are fine)
> 	checked with WindowsXP. In XP the sound is nice and clear. So the
> files are good.
> C)	OSS (see bug-mplayer file)
> D)	See bug-mplayer file
> E)	nothing

What if you do the following (as root)?

	# echo "mplayer 0 0 direct" > /proc/asound/card0/pcm0p/oss
	
This will disable the conversion in OSS emulation, so mplayer will
take 96kHz as is.

> A)	Xine 0.99.5
> B)	No samplingrate is clear, all is crackeling....
> C) 	ALSA I guess (bug-mplayer file)
> D)	See bug-xine file
> E)	nothing

Not sure about this...


Takashi