5f8648a46b
- add sndio backend playback under aucat server is pretty solid. for full-duplex, starting aucat with 'aucat -l -b 2048' and jackd with just 'jackd -d sndio' seems to work best for me. we want low latency anyway, right ;)
69 lines
2.7 KiB
Plaintext
69 lines
2.7 KiB
Plaintext
$OpenBSD: patch-jackd_jackd_1_in,v 1.1 2009/01/11 10:51:46 jakemsr Exp $
|
|
--- jackd/jackd.1.in.orig Sat Jan 10 02:52:33 2009
|
|
+++ jackd/jackd.1.in Sat Jan 10 02:58:02 2009
|
|
@@ -35,8 +35,9 @@ For the latest JACK information, please consult the we
|
|
.br
|
|
Select the audio interface backend. The current list of supported
|
|
backends is: \fBalsa\fR, \fBcoreaudio\fR, \fBdummy\fR, \fBfreebob\fR,
|
|
-\fBoss\fR \fBsun\fR and \fBportaudio\fR. They are not all available
|
|
-on all platforms. All \fIbackend\-parameters\fR are optional.
|
|
+\fBoss\fR \fBsun\fR \fBsndio\fR and \fBportaudio\fR. They are not
|
|
+all available on all platforms. All \fIbackend\-parameters\fR are
|
|
+optional.
|
|
|
|
.TP
|
|
\fB\-h, \-\-help\fR
|
|
@@ -348,6 +349,43 @@ Specify output device for playback (default: /dev/audi
|
|
.TP
|
|
\fB\-b, \-\-ignorehwbuf \fIboolean\fR
|
|
Specify, whether to ignore hardware period size (default: false)
|
|
+.SS SNDIO BACKEND PARAMETERS
|
|
+.TP
|
|
+\fB\-r, \-\-rate \fIint\fR
|
|
+Specify the sample rate. The default is 44100.
|
|
+.TP
|
|
+\fB\-p, \-\-period \fIint\fR
|
|
+Specify the number of frames between JACK \fBprocess()\fR calls. This
|
|
+value must be a power of 2, and the default is 1024. If you need low
|
|
+latency, set \fB\-p\fR as low as you can go without seeing xruns. A larger
|
|
+period size yields higher latency, but makes xruns less likely. The JACK
|
|
+capture latency in seconds is \fB\-\-period\fR divided by \fB\-\-rate\fR.
|
|
+Note that this value is mostly advisory when aucat server is running
|
|
+and may be updated internally.
|
|
+.TP
|
|
+\fB\-n, \-\-nperiods \fIint\fR
|
|
+Specify the number of periods in the hardware buffer. The default is
|
|
+2. The period size (\fB\-p\fR) times \fB\-\-nperiods\fR times four
|
|
+(assuming 2 channels 16-bit samples) is the JACK buffer size in bytes.
|
|
+The JACK output latency in seconds is \fB\-\-nperiods\fR times
|
|
+\fB\-\-period\fR divided by \fB\-\-rate\fR.
|
|
+Note that this value is mostly advisory when aucat server is running
|
|
+and may be updated internally.
|
|
+.TP
|
|
+\fB\-w, \-\-wordlength \fIint\fR
|
|
+Specify the sample size in bits. The default is 16.
|
|
+.TP
|
|
+\fB\-i, \-\-inchannels \fIint\fR
|
|
+Specify how many channels to capture (default: 2)
|
|
+.TP
|
|
+\fB\-o, \-\-outchannels \fIint\fR
|
|
+Specify number of playback channels (default: 2)
|
|
+.TP
|
|
+\fB\-d, \-\-device \fIdevice_file\fR
|
|
+Specify device for capture and playback (default: NULL)
|
|
+.TP
|
|
+\fB\-b, \-\-ignorehwbuf \fIboolean\fR
|
|
+Specify, whether to ignore hardware period size (default: false)
|
|
.SS PORTAUDIO BACKEND PARAMETERS
|
|
.TP
|
|
\fB\-c \-\-channel\fR
|
|
@@ -394,6 +432,8 @@ Print usage message for the parameters specific to eac
|
|
\fBjackd \-d oss \-\-help\fR
|
|
.br
|
|
\fBjackd \-d sun \-\-help\fR
|
|
+.br
|
|
+\fBjackd \-d sndio \-\-help\fR
|
|
.br
|
|
\fBjackd \-d portaudio \-\-help\fR
|
|
.PP
|