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| author | Joel Dahl <joel@FreeBSD.org> | 2006-11-29 17:07:02 +0000 |
|---|---|---|
| committer | Joel Dahl <joel@FreeBSD.org> | 2006-11-29 17:07:02 +0000 |
| commit | 4a418e5bf9d837864ad60a7229e3fe3ce2d72732 (patch) | |
| tree | 601afc949d3fb163e993ff41263ab65f3182a18b /share/man/man4/pcm.4 | |
| parent | a1480dfbadab48100dfcc3db1270fb55a5e01d9b (diff) | |
| download | src-4a418e5bf9d837864ad60a7229e3fe3ce2d72732.tar.gz src-4a418e5bf9d837864ad60a7229e3fe3ce2d72732.zip | |
Add the dev.pcm.%d.polling sysctl and a short description.
Reviewed by: ru
Notes
Notes:
svn path=/head/; revision=164752
Diffstat (limited to 'share/man/man4/pcm.4')
| -rw-r--r-- | share/man/man4/pcm.4 | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/share/man/man4/pcm.4 b/share/man/man4/pcm.4 index 4a709e1516c5..a30d813133ad 100644 --- a/share/man/man4/pcm.4 +++ b/share/man/man4/pcm.4 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 26, 2006 +.Dd November 29, 2006 .Dt SOUND 4 .Os .Sh NAME @@ -268,6 +268,12 @@ Format for mixing. All playback paths will be converted to this format before the mixing process begins. +.It Va dev.pcm.%d.polling +Experimental polling mode support where the driver operates by querying the +device state on each tick using a +.Xr callout 9 +mechanism. +Disabled by default and currently only available for a few device drivers. .El .Ss Recording Channels On devices that have more than one recording source (ie: mic and line), |