>>>>> "Jan" == Jan Schmidt <[EMAIL PROTECTED]> writes:

Jan> On Sun, 2005-07-31 at 21:24 +1000, Peter Chubb wrote:
>> Hi, I have a laptop with IEC958 digital output.  It uses an i810
>> with AC97 codec.
>> 
>> How can I get full 5.1 channel output through the digital output?
>> Stereo works well, by specifying ALSA device iec958
>> 

Jan> To the best of my knowledge (and I'd enjoy being corrected), you
Jan> can't.  The only way to get 5.1 channel output from the
Jan> SPDIF/IEC958 output is to use a compressed codec, ie AC3 or DTS,
Jan> which have actively-defended-patented encoders.


Jan> Basically that means it's only good for streaming the content
Jan> straight off a DVD to a decoder box, or decoding speakers.

I have a DTS decoder in my amp.  I tell xine to use the IEC958
passthrough. and get no output, or at best, front left and right only.

The speaker_test app is meant to do AC3 encoding...
-- 
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*
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