Subject: Re: OSS emulation of full-duplex audio devices
To: Jared D. McNeill <>
From: Matthias Drochner <>
List: tech-kern
Date: 04/25/2005 18:44:33 said:
> It seems strange to default a device to half-duplex mode if
> full-duplex is supported and the device was opened read/write.

btw, there was another strange/inconsistent behaviour: One
needed to do the AUDIO_SETFD call _before_ an AUDIO_SETINFO
which sets (AUMODE_PLAY* | AUMODE_RECORD). Otherwise, the
AUDIO_SETINFO would fail silently, and a later AUDIO_SETFD
would not help either.

Perhaps there was a good reason to introduce that strange
behaviour, but from the application POV it should be much
more nice and consistent now.

best regards