From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arun Raghavan <arun.raghavan@collabora.co.uk>
Subject: Correct way to set NONAUDIO flag
Date: Wed, 17 Aug 2011 13:29:07 +0530
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Hello,
I'm trying to figure out the right way to set the NONAUDIO flag on an
iec958 device. The idea is that when we get a new stream in PulseAudio
that signals a non-PCM format, we'd like to set the NONAUDIO flag to let
receivers know that this isn't PCM data. I tried doing what iecset does
in the PA alsa-sink code but this fails.

As far as I can tell, this happens because: (a) if I set the flag before
snd_pcm_open(), the AES0 value from iec958.conf gets used, and (b) if I
set the flag after snd_pcm_open(), changing the value is no longer
permitted.

Any help/pointers would be appreciated.

Thanks,
Arun