Debugging spdif
Philip Prindeville
philipp_subx at redfish-solutions.com
Tue Jul 19 03:03:02 UTC 2005
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
>
>
>
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