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authorjoel <joel@FreeBSD.org>2006-11-29 17:07:02 +0000
committerjoel <joel@FreeBSD.org>2006-11-29 17:07:02 +0000
commitbcf19b8816ed961fb5b7f4e51bbe80108f3a43ab (patch)
tree601afc949d3fb163e993ff41263ab65f3182a18b /share/man/man4/pcm.4
parent45926e53d0a86af2776153b353c65aa3f9f6af08 (diff)
downloadFreeBSD-src-bcf19b8816ed961fb5b7f4e51bbe80108f3a43ab.zip
FreeBSD-src-bcf19b8816ed961fb5b7f4e51bbe80108f3a43ab.tar.gz
Add the dev.pcm.%d.polling sysctl and a short description.
Reviewed by: ru
Diffstat (limited to 'share/man/man4/pcm.4')
-rw-r--r--share/man/man4/pcm.48
1 files changed, 7 insertions, 1 deletions
diff --git a/share/man/man4/pcm.4 b/share/man/man4/pcm.4
index 4a709e1..a30d813 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),
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