cs46xx and 5.1, does it work?

cs46xx and 5.1, does it work?

[Gregoire Favre]

Hello,

I have got a Digifire 7.1 and try to use the 5.1 with SPDIF with it,
browsing http://www.mail-archive.com/alsa-devel%40lists.sourceforge.net
I didn't really found whether it's possible to use 5.1 SPDIF with it?

What is working is: I can play sound using aplay, and I hear them with
my SPDIF connection, also playing a dvd with mplayer and using -ao oss
also works, not with -ao alsa9 (and I am using devfs, so the device
shouldn't be the problem).
Using the analog ouptut, I could also heard the sound from the CD, but I
can't hear my CD from the SPDIF...

I have tried kernel 2.4.20 with alsa-0.9.0-rc7 and with CVS, and also
2.5.59 with native kernel alsa modules.

Trying ac3play gives me:

greg@localhost:~ >/usr/src/ac3play-0.5.2f/ac3play /data/linux/dvb/from_beyond_the_edge_44k_256kbps.ac3
ac3play: Unable to update the IEC958 control: No such file or directory
ac3play: Period size not available: Invalid argument
Segmentation fault
Exit 139

[root@localhost ~]# cat /proc/asound/devices 
  0: [0- 0]: ctl
  8: [0- 0]: raw midi
 18: [0- 2]: digital audio playback
 17: [0- 1]: digital audio playback
 16: [0- 0]: digital audio playback
 24: [0- 0]: digital audio capture
  1:       : sequencer
 33:       : timer

All I want to be able to do, is to play DVD in 5.1 and using VDR
(http://www.cadsoft.de/people/kls/vdr) with the AC3 bitstreamout plugin
(http://bitstreamout.sourceforge.net/) to watch TV with 5.1...

Any idea on what I should do?

Thank you very much for all info,

	Grégoire
________________________________________________________________
http://ulima.unil.ch/greg ICQ:16624071 mailto:greg@ulima.unil.ch


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Re: cs46xx and 5.1, does it work?

[Gregoire Favre]

Hello again,

is what written under http://alsa.opensrc.org/index.php?page=cs46xx 

"Dolby Digital and DTS passthrough is currently un-implemented."

right?

In that case I have my answer :-(

Are there some plan to change this?

Thank you very much,

	Grégoire
________________________________________________________________
http://ulima.unil.ch/greg ICQ:16624071 mailto:greg@ulima.unil.ch


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Re: cs46xx and 5.1, does it work?

[Takashi Iwai]

At Wed, 19 Feb 2003 14:20:51 +0100,
Gregoire Favre wrote:
> 
> Hello again,
> 
> is what written under http://alsa.opensrc.org/index.php?page=cs46xx 
> 
> "Dolby Digital and DTS passthrough is currently un-implemented."
> 
> right?

AC3 passthrough is ok for some cs46xx cards, hercules game theater XP
and terratec x-fire 1024.  on these cards, so far, 2 codecs are
supported.

for supporting 3 codecs, we likely need another dsp codes...


Takashi


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Re: cs46xx and 5.1, does it work?

[Gregoire Favre]

On Thu, Feb 20, 2003 at 10:21:17AM +0100, Takashi Iwai wrote:

> AC3 passthrough is ok for some cs46xx cards, hercules game theater XP
> and terratec x-fire 1024.  on these cards, so far, 2 codecs are
> supported.
> 
> for supporting 3 codecs, we likely need another dsp codes...

I am sorry to bother you, I don't understand the answer: do you mean the
alsa team got all technical info and need to program the dsp codes, or
you mean Hercules didn't tell you the needed info?

The only reason I bought this card was to be able to use the SPDIF for
http://bitstreamout.sourceforge.net/ so your answer is of hudge interest
for me ;-)

Before I bought the card I looked at the supported card, and found the
info I wanted, but I didn't understand it enough it seems :-)

Thank you very much,

	Grégoire
________________________________________________________________
http://ulima.unil.ch/greg ICQ:16624071 mailto:greg@ulima.unil.ch


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