Date: Wed, 02 Sep 2009 18:53:49 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Andriy Gapon <avg@icyb.net.ua> Cc: freebsd-multimedia@FreeBSD.org Subject: Re: forcing two channel output Message-ID: <4A9E950D.2070906@FreeBSD.org> In-Reply-To: <4A9E8FEC.7010005@icyb.net.ua> References: <4A980B19.4090801@icyb.net.ua> <4A9815F3.9010601@FreeBSD.org> <4A9E40B9.2050004@icyb.net.ua> <4A9E428E.7010401@FreeBSD.org> <4A9E8FEC.7010005@icyb.net.ua>
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Andriy Gapon wrote: > on 02/09/2009 13:01 Alexander Motin said the following: >> HDA controllers have limitations on number of data streams. You can see >> it if boot with hw.snd.verbose=4. Usually there are 4 streams supported. >> snd_hda allocates them statically now, one device - one data stream. So >> you just could hit this limitation because of big number of devices. It >> would be good to allocate streams dynamically on open, but it is not >> implemented now. > > Is this something that could tweak locally - bump some limit or slightly change > some logic? There is hardware limitation on number of streams. But logic is indeed could be improved. > What should I look for in the source code? Look for sc->num_iss, sc->num_oss and ch->sid. -- Alexander Motin
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