Multiple consumers of /dev/dsp

Josef Karthauser joe at FreeBSD.org
Thu Jul 21 13:44:17 GMT 2005


In the past I'm sure that we supported the mixing of audio in the kernel
so that multiple applications could open /dev/dsp at the same time.  Was
this a function of the audio card driver, or of the audio subsystem?
Currently on my new machine I don't get any mixing, and applications
fail to open /dev/dsp if it's already open by something.

The current hardware is:

    FreeBSD Audio Driver (newpcm)
    Installed devices:
    pcm0: <Intel ICH4 (82801DB)> at io 0xee00, 0xe000 irq 9 bufsz 16384 kld
    snd_ich (1p/1r/0v channels duplex default)

Am I imagining that this use to the case or isn't it enabled by default?

Joe
-- 
Josef Karthauser (joe at tao.org.uk)	       http://www.josef-k.net/
FreeBSD (cvs meister, admin and hacker)     http://www.uk.FreeBSD.org/
Physics Particle Theory (student)   http://www.pact.cpes.sussex.ac.uk/
================ An eclectic mix of fact and theory. =================
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