Audio config: Difference between revisions

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Install jackd1 (not jackd2 since it depends on dbus, meh).
Install jackd2 from /root/jackd2, which is a jackd2 compiled without dbus (--dbus removed from debian/rules in the debian source package).
Make sure to enable rtprio and memlock permissions, the jackd installer on debian asks for this.


Use this /etc/init.d/jackd file
Make a new file /root/jackd_start, chmod to 755 and put this in it:
<pre><nowiki>
<pre><nowiki>
#!/bin/sh
#!/bin/bash
#
# Jackd init script
#
### BEGIN INIT INFO
# Provides:          jackd
# Required-Start:    $local_fs
# Required-Stop:
# Default-Start:    2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: init-Script for system wide fetchmail daemon
### END INIT INFO
#
# A fetchmailrc file containg hosts and passwords for all local users should be
# placed in /etc/fetchmailrc.  Remember to make the /etc/fetchmailrc mode 600
# to avoid disclosing the users' passwords.
#
# This script will NOT start or stop fetchmail if the /etc/fetchmailrc file
# does not exist or /etc/default/fetchmail is set to no.


set -e
#make sure jackd and bobdsp are terminated when this script ends
cleanup()
{
  killall jackd
  killall bobdsp
  exit 0
}
trap cleanup SIGINT
trap cleanup SIGTERM


# Defaults
#JACK_PROMISCUOUS_SERVER is exported here and in /etc/environment
PATH=/sbin:/bin:/usr/sbin:/usr/bin
#this tells jackd and libjack to use /dev/shm/jack instead of /dev/shm/jack-<uid>
DAEMON=/usr/bin/jackd
#and to set the permissions to 777, however umask needs to be set to 0 first
USER=
export JACK_PROMISCUOUS_SERVER=""
OPTIONS=""


PIDFILE="/var/run/jackd.pid"
#allow rtprio and mem locking
ulimit -l unlimited
ulimit -r 95


test -f /etc/default/jackd || exit 0
#start bobdsp
. /etc/default/jackd
su -l bitlair -c "cd /home/bitlair/bobdsp; ./build/bobdsp -f -d"


OPTIONS="$OPTIONS"
#start jackd with -l passed to su to make the environment a login shell, restart when it dies
#jackd needs to run as root, probably because it needs to send signals to its clients
while [ 1 ]
do
  su -l -c "mkdir ~/.jackd; umask 0; jackd -R -d alsa -d jack51 -r 48000 -p 1024 -n 2 -i 2 -o 6 2>&1 | tee ~/.jackd/jackd.log" || true
  sleep 1
done
</nowiki></pre>


if [ ! "x$START_DAEMON" = "xyes" -a ! "$1" = "stop" ]; then
Put this in /etc/rc.local
echo "Edit /etc/default/jackd to start jackd"
<pre><nowiki>
exit 0
/root/jackd_start&
fi
</nowiki></pre>


test -f $DAEMON || exit 0
At the top of /etc/init.d/mpd change
<pre><nowiki>
#!/bin/sh
</nowiki></pre>
to
<pre><nowiki>
#!/bin/bash
</nowiki></pre>


. /lib/lsb/init-functions
Then change
<pre><nowiki>
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0
</nowiki></pre>
into
<pre><nowiki>
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0


case "$1" in
#allow rtprio and mem locking
start)
ulimit -l unlimited
if test -e $PIDFILE ; then
ulimit -r 95
pid=`cat $PIDFILE | sed -e 's/\s.*//'|head -n1`
</nowiki></pre>
PIDDIR=/proc/$pid
    if [ -d ${PIDDIR} -a  "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
log_failure_msg "jackd already started; not starting."
exit 0
else
log_warning_msg "Removing stale PID file $PIDFILE."
rm -f $PIDFILE
fi
fi
if pgrep -u $USER jackd > /dev/null 2>&1; then
log_failure_msg "jackd already running as user $USER; not starting."
exit 0
fi
        log_begin_msg "Starting jackd audio server:" "jackd"


if start-stop-daemon -b -S -o -q -x $DAEMON -u $USER -a /bin/su -- - $USER -c "$DAEMON $OPTIONS"; then
And
while ! pgrep -u $USER jackd > /dev/null 2>&1; do continue; done
<pre><nowiki>
pgrep -u $USER jackd > $PIDFILE
user "mpd"
while ! su - $USER -c jack_lsp > /dev/null 2>&1; do
</nowiki></pre>
sleep 0.1
into
done
<pre><nowiki>
log_end_msg 0
user "bitlair"
else
log_end_msg 1
exit 1
fi
                #JACK_PROMISCUOUS_SERVER is exported in /etc/environment, but the permissions are not set up correctly
                chmod -R 777 /dev/shm/jack
;;
stop)
if ! test -e $PIDFILE ; then
log_failure_msg "Pidfile not found! Is jackd running?"
exit 0
fi
        log_begin_msg "Stopping jackd audio server:" "jackd"
if start-stop-daemon -m -K -o -q -p $PIDFILE -x $DAEMON -u $USER; then
                        rm -f $PIDFILE
log_end_msg 0
else
log_end_msg 1
exit 1
fi
if pgrep -u $USER jackd; then
killall -9 $DAEMON
exit 0
fi
;;
force-reload|restart)
        log_begin_msg "Restarting jackd audio server:" "jackd"
if ! start-stop-daemon -m -K -o -q -p $PIDFILE -x $DAEMON -u $USER; then
log_end_msg 1
exit 1
fi
sleep 1
                rm -f $PIDFILE || true
if start-stop-daemon -m -b -S -o -q -p $PIDFILE -x $DAEMON -u $USER -c $USER -a $DAEMON -- $OPTIONS; then
log_end_msg 0
else
log_end_msg 1
exit 1
fi
;;
try-restart)
if test -e $PIDFILE ; then
pid=`cat $PIDFILE | sed -e 's/\s.*//'|head -n1`
PIDDIR=/proc/$pid
if [ -d ${PIDDIR} -a  "$(readlink -f ${PIDDIR}/exe)" = "${DAEMON}" ]; then
$0 restart
exit 0
fi
fi
test -f /etc/rc`/sbin/runlevel | cut -d' ' -f2`.d/S*jackd* && $0 start
;;
awaken)
        log_begin_msg "Awakening jackd audio server:" "jackd"
if [ -s $PIDFILE ]; then
start-stop-daemon -K -s 10 -q -p $PIDFILE -x $DAEMON
log_end_msg 0
exit 0
else
log_end_msg 1
exit 1
fi
;;
*)
log_warning_msg "Usage: /etc/init.d/jackd {start|stop|restart|force-reload|awaken|debug-run}"
log_warning_msg "  start - starts system-wide jackd service"
log_warning_msg "  stop  - stops system-wide jackd service"
log_warning_msg "  restart, force-reload - starts a new system-wide jackd service"
log_warning_msg "  awaken - tell system-wide jackd to start a poll cycle immediately"
log_warning_msg "  debug-run [strace [strace options...]] - start a debug run of the"
log_warning_msg "   system-wide jackd service, optionally running it under strace"
exit 1
;;
esac
 
exit 0
</nowiki></pre>
</nowiki></pre>


Use this /etc/default/jackd file
Then run as root:
 
<pre><nowiki>
<pre><nowiki>
# Set to "yes" to start jackd at boot
dpkg-statoverride --remove /var/run/mpd
START_DAEMON=yes
dpkg-statoverride --add bitlair audio 755 /var/run/mpd


# The jackd process will run under this user
chown -R bitlair:audio /var/lib/mpd
USER=bitlair
chown -R bitlair:audio /var/run/mpd
 
chown -R bitlair:audio /var/log/mpd
# Options to pass to jackd
OPTIONS="-R -d alsa -d jack51 -r 48000 -p 1024 -n 2 -i 2 -o 6"
</nowiki></pre>
</nowiki></pre>


Use this /etc/asound.conf file
Use this /etc/asound.conf file
<pre><nowiki>
pcm.!default {
    type plug
    slave { pcm "jack" }
}
pcm.jack {
    type jack
    playback_ports {
        0 system:playback_1
        1 system:playback_2
        2 system:playback_3
        3 system:playback_4
        4 system:playback_5
        5 system:playback_6
    }
    capture_ports {
        0 system:capture_1
        1 system:capture_2
    }
}
ctl.mixer0 {
    type hw
    card 0
}


<pre><nowiki>
ctl.jack51 {
ctl.jack51 {
     type hw
     type hw
     card 0
     #card 0
     #default:CARD=Audigy
     card Audigy
}
}


Line 179: Line 126:
         # route for mmap workaround
         # route for mmap workaround
         type plug
         type plug
         #slave.pcm "surround51:CARD=Audigy,DEV=0"
         slave.pcm "surround51:CARD=Audigy"
         slave.pcm "surround51"
         #slave.pcm "surround51"
         slave.channels 6
         slave.channels 6
         route_policy duplicate
         route_policy duplicate
Line 187: Line 134:
         # 2 channels only
         # 2 channels only
         type hw
         type hw
         card 0
         #card 0
         #type plug
         card Audigy
        #slave.pcm "default:CARD=Audigy,DEV=0"
     }
     }
}
</nowiki></pre>
In /etc/mpd.conf comment the current audio output, and use this instead:
<pre><nowiki>
audio_output {     
      type    "jack"     
      name    "mpd"   
}
}
</nowiki></pre>
</nowiki></pre>

Latest revision as of 21:01, 5 September 2012

Install jackd2 from /root/jackd2, which is a jackd2 compiled without dbus (--dbus removed from debian/rules in the debian source package). Make sure to enable rtprio and memlock permissions, the jackd installer on debian asks for this.

Make a new file /root/jackd_start, chmod to 755 and put this in it:

#!/bin/bash

#make sure jackd and bobdsp are terminated when this script ends
cleanup()
{
  killall jackd
  killall bobdsp
  exit 0
}
trap cleanup SIGINT
trap cleanup SIGTERM

#JACK_PROMISCUOUS_SERVER is exported here and in /etc/environment
#this tells jackd and libjack to use /dev/shm/jack instead of /dev/shm/jack-<uid>
#and to set the permissions to 777, however umask needs to be set to 0 first
export JACK_PROMISCUOUS_SERVER=""

#allow rtprio and mem locking
ulimit -l unlimited
ulimit -r 95

#start bobdsp
su -l bitlair -c "cd /home/bitlair/bobdsp; ./build/bobdsp -f -d"

#start jackd with -l passed to su to make the environment a login shell, restart when it dies
#jackd needs to run as root, probably because it needs to send signals to its clients
while [ 1 ]
do
  su -l -c "mkdir ~/.jackd; umask 0; jackd -R -d alsa -d jack51 -r 48000 -p 1024 -n 2 -i 2 -o 6 2>&1 | tee ~/.jackd/jackd.log" || true
  sleep 1
done

Put this in /etc/rc.local

/root/jackd_start&

At the top of /etc/init.d/mpd change

#!/bin/sh

to

#!/bin/bash

Then change

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

into

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

#allow rtprio and mem locking
ulimit -l unlimited
ulimit -r 95

And

user				"mpd"

into

user				"bitlair"

Then run as root:

dpkg-statoverride --remove /var/run/mpd
dpkg-statoverride --add bitlair audio 755 /var/run/mpd

chown -R bitlair:audio /var/lib/mpd
chown -R bitlair:audio /var/run/mpd
chown -R bitlair:audio /var/log/mpd

Use this /etc/asound.conf file

pcm.!default {
    type plug
    slave { pcm "jack" }
}

pcm.jack {
    type jack
    playback_ports {
        0 system:playback_1
        1 system:playback_2
        2 system:playback_3
        3 system:playback_4
        4 system:playback_5
        5 system:playback_6
    }
    capture_ports {
        0 system:capture_1
        1 system:capture_2
    }
}

ctl.mixer0 {
    type hw
    card 0
}

ctl.jack51 {
    type hw
    #card 0
    card Audigy
}

pcm.jack51 {
    # "asym" allows for different
    # handling of in/out devices
    type asym
    playback.pcm {
         # route for mmap workaround
         type plug
         slave.pcm "surround51:CARD=Audigy"
         #slave.pcm "surround51"
         slave.channels 6
         route_policy duplicate
    }
    capture.pcm {
        # 2 channels only
        type hw
        #card 0
        card Audigy
    }
}

In /etc/mpd.conf comment the current audio output, and use this instead:

audio_output {       
       type    "jack"       
       name    "mpd"     
}