Re: S/PDIF digital AC3/DTS not working in xine-lib-1-rc0a

Well I just tried it again and read the source code some more.  It seems
if you're soundcard is failing to report AFMT_AC3 correctly then you can
override this with oss_pass_through_bug.  

However neither of these yield any improvement for me so I'm forced to
assume this is a bug of the ac3 handling on emu10k1 kernel driver for
audigy i.e. the dsp patch for audigy doesn't work right for
passthrough.  Since I can't even play any ac3 file even using the
example programs in the with emu10k1 this kind of makes sense + I'm yet
to hear of a working audigy with ac3 passthrough.


On Mon, 2003-08-11 at 19:55, Henning Haaland Kulander wrote:
> Hi Christopher,
> 
> That sounds about right... I get a noise, kind of like the static noise
> on a TV with no signal, but it only sounds at regular intervals. My
> Creative Inspire Digital 5700 receiver does not show any indication that
> it is receiving digital sound. It has an indicator that would normally
> show that it is receiving Dolby Digital sound, or DTS, but those
> indicators are black. 
> 
> My theory is that the receiver thinks the packages it receives are
> normal PCM packages and treats them as such... Unfortunately the
> receiver has no LEDS to indicate PCM... So this cannot be verified. 
> 
> 
> Regards, 
> Henning Kulander
> 
> On Mon, 2003-08-11 at 20:33, Christopher S Horler wrote:
> > Hi Henning,
> > 
> > I have a similar problem with my digital sound.  I would like to clarify
> > this noise on digital (I think I get it too), there's no discernible
> > sound track, just clicking repeating at what appears to be a regular
> > interval.  The speakers indicate they are receiving a digital input.  My
> > sound-card is a soundblaster audigy (using the emu10k1 driver v0.20a)
> > 
> > On Mon, 2003-08-04 at 14:57, Henning Haaland Kulander wrote:
> > > Hi!
> > > 
> > > I downloaded xine-lib-1-rc0, and subsequently rc0a to test it on my
> > > machine. It works fine with normal analog sound output, but digital
> > > sound output only makes noise, kind of a tch-tch-tch effect.. :)
> > > 
> > > I also get this error message in console:
> > > ----------------------------------------
> > > audio_oss_out: unsupported mode 00000000
> > > audio_oss_out: AC3 SNDCTL_DSP_SETFMT failed. 16. Using alternative.
> > > load_plugins: plugin dxr3-spudec failed to instantiate itself.
> > > libspudec:init_plugin called
> > > audio_oss_out: AC3 SNDCTL_DSP_SETFMT failed. 16. Using alternative.
> > > 
> > > 
> > > Since I have never experienced this problem with the earlier xine-lib-1
> > > releases, I tried diffing against beta12 to see what was the difference.
> > > I found that line 313 is the problem. By commenting out this line I can
> > > get both analog and digital output. 
> > > 
> > > I'm using an SBLive 5.1 card with emu10k1-v0.20a drivers on the Linux
> > > 2.4.21-0.13mdk (Mandrake 9.1 standard kernel)
> > > 
> > > I attached the patch I used to fix it (not a real patch, only a patch
> > > between the fixed .c-file and the emacs-backup) for reference. I see
> > > that the changes were made by James in an attempt to enable digital
> > > output on systems that does not report availability of spdif. 
> > > 
> > > Other than that: Congratulations on another great release! Without doubt
> > > the best so far! 
-- 
Christopher S Horler <zen11419@xxxxxxxxx>



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