Debugging spdif

[Philip Prindeville]

Are you using pure ALSA, or ALSA's OSS emulation?

It might be that the non-audio bit isn't being set correctly in
the AC3 packet header...  Some decoders are fussy about this.

Some aren't.

I suspect that whoever wrote the SPDIF driver(s) for ALSA
had a receiver that locked up the rate and ignored the contents
of the AC3 packet header (i.e. it went by clocking rate and not
by header type).

-Philip


Andy Pieters wrote:

>Hi all
>
>When I play a dvd in xine, and tell xine to 'pass-thru' the audo to my dolby 
>souround decoder, I hear the telltale switch noise which signals xine turning 
>on spdif but after that no more sound is audible.
>
>Is there any way of knowing if the spdif stream actually contains sound and 
>that it would mean my decoder's gone, or, that the stream is empty and the 
>problem is xine, or alsa related?
>
>
>With kind regards
>
>
>Andy
>
>  
>