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From: Arun Raghavan <arun.raghavan@collabora.co.uk>
To: alsa-devel@alsa-project.org
Subject: Correct way to set NONAUDIO flag
Date: Wed, 17 Aug 2011 13:29:07 +0530	[thread overview]
Message-ID: <1313567970.533.21.camel@snowflake> (raw)

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

             reply	other threads:[~2011-08-17  7:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-17  7:59 Arun Raghavan [this message]
2011-08-17 12:42 ` Correct way to set NONAUDIO flag Clemens Ladisch
2011-08-17 13:06   ` Arun Raghavan
2011-08-17 14:55     ` Clemens Ladisch
2011-08-17 15:41       ` Arun Raghavan
2011-08-17 15:31     ` Pierre-Louis Bossart
     [not found]     ` <000901cc5cf2$af7fa180$0e7ee480$@bossart@linux.intel.com>
2011-08-17 15:41       ` Arun Raghavan
2011-08-17 17:01       ` Clemens Ladisch

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