Package: gmediarender
Version: 0.0.7~git20140302+repack-2
Severity: wishlist

Dear Maintainer,

Could somebody please add documentataion on how to use gmediarender in
background on a workstation?

   * What led up to the situation?

When starting gmediarender as a service it competes with pulseaudio [or
other alsa apps] for exclusive dsp/pcm use. So either gmediarender or
pulseaudio will fail to work as expected.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

I want to run gmediarender as a service on a workstation and also want
sound in desktop sessions.

   * What was the outcome of this action?

I had to use/enable alsa mixer:

Step 1: --- /etc/asound.conf modified:

pcm.dmixer {
    type dmix
    ipc_key 19552107  # any unique value
    ipc_perm 0666
    slave {
        pcm "hw:0,0"
        period_time 0
        period_size 1024
        buffer_size 8192
        rate 44100
    }

    bindings {
        0 0
        1 1
     }
}

pcm.dsp0 {
    type plug
    slave.pcm "dmixer"
}

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

pcm.default {
    type plug
    slave.pcm "dmixer"
}

ctl.mixer0 {
    type hw
    card 0
}


    
Step 2: --- /etc/pulse/default.pa added one line:

load-module module-alsa-sink device=pcm.dmixer



Step 3: ---  Finally changed /etc/default/gmediarender: 

ALSA_DEVICE="dmixer"



It works fine for me. But I dislike

(1) using /etc/asound.conf at all (depends on the hardware)
(2) setting 0666 mode for SYS-V IPC objects

Anyhow: my example shows that gmediarender can run in background on a
workstation without affecting the desktop.

Will somebody improve my proof-of-concept and write some documentation?

Thanks
Jürgen




-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gmediarender depends on:
ii  libc6              2.19-18+deb8u1
ii  libglib2.0-0       2.42.1-1
ii  libgstreamer1.0-0  1.4.4-2
ii  libupnp6           1:1.6.19+git20141001-1
ii  lsb-base           4.1+Debian13+nmu1

Versions of packages gmediarender recommends:
ii  gstreamer1.0-plugins-good  1.4.4-2

gmediarender suggests no packages.

-- Configuration Files:
/etc/default/gmediarender changed:
ENABLED=1
DAEMON_USER="nobody:audio"
UPNP_DEVICE_NAME="Workstation [$(hostname)]"
INITIAL_VOLUME_DB=-10
ALSA_DEVICE="dmixer"
DAEMON_EXTRA_ARGS="--logfile /var/log/gmediarender.log"

/etc/init.d/gmediarender changed:
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="GMediaRender"
NAME=gmediarender
DAEMON=/usr/bin/$NAME
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
DAEMON_USER="nobody:audio"
UPNP_DEVICE_NAME="gmediarender"
INITIAL_VOLUME_DB=-10
ALSA_DEVICE="sysdefault"
DAEMON_EXTRA_ARGS=""
[ -x "$DAEMON" ] || exit 0
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
[ "x$ENABLED" = "x1" ] || exit 0
. /lib/init/vars.sh
. /lib/lsb/init-functions
if [ -n "$ALSA_DEVICE" ] ; then
        GS_SINK_PARAM="--gstout-audiosink=alsasink"
        GS_DEVICE_PARAM="--gstout-audiodevice=$ALSA_DEVICE"
fi
UPNP_UUID=`ip link show | awk '/ether/ {print "salt:)-" $2}' | head -1 | md5sum 
| awk '{print $1}'`
DAEMON_ARGS=" -f \"$UPNP_DEVICE_NAME\" -d -u \"$UPNP_UUID\" $GS_SINK_PARAM 
$GS_DEVICE_PARAM --gstout-initial-volume-db=$INITIAL_VOLUME_DB 
$DAEMON_EXTRA_ARGS"
do_start()
{
        # Return
        #   0 if daemon has been started
        #   1 if daemon was already running
        #   2 if daemon could not be started
        start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON 
--test > /dev/null \
                || return 1
    eval start-stop-daemon -c "$DAEMON_USER" --start --quiet --pidfile $PIDFILE 
--exec $DAEMON -- \
                $DAEMON_ARGS \
                || return 2
        # Add code here, if necessary, that waits for the process to be ready
        # to handle requests from services started subsequently which depend
        # on this one.  As a last resort, sleep for some time.
}
do_stop()
{
        start-stop-daemon --stop --quiet --exec $DAEMON
    return 0
        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred
        start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile 
$PIDFILE --name $NAME
        RETVAL="$?"
        [ "$RETVAL" = 2 ] && return 2
        # Wait for children to finish too if this is a daemon that forks
        # and if the daemon is only ever run from this initscript.
        # If the above conditions are not satisfied then add some other code
        # that waits for the process to drop all resources that could be
        # needed by services started subsequently.  A last resort is to
        # sleep for some time.
        start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec 
$DAEMON
        [ "$?" = 2 ] && return 2
        # Many daemons don't delete their pidfiles when they exit.
        rm -f $PIDFILE
        return "$RETVAL"
}
do_reload() {
        #
        # If the daemon can reload its configuration without
        # restarting (for example, when it is sent a SIGHUP),
        # then implement that here.
        #
        start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name 
$NAME
        return 0
}
case "$1" in
  start)
        [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
        do_start
        case "$?" in
                0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  stop)
        [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
                0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  status)
        status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
        ;;
  #reload|force-reload)
        #
        # If do_reload() is not implemented then leave this commented out
        # and leave 'force-reload' as an alias for 'restart'.
        #
        #log_daemon_msg "Reloading $DESC" "$NAME"
        #do_reload
        #log_end_msg $?
        #;;
  restart|force-reload)
        #
        # If the "reload" option is implemented then remove the
        # 'force-reload' alias
        #
        log_daemon_msg "Restarting $DESC" "$NAME"
        do_stop
        case "$?" in
          0|1)
                do_start
                case "$?" in
                        0) log_end_msg 0 ;;
                        1) log_end_msg 1 ;; # Old process is still running
                        *) log_end_msg 1 ;; # Failed to start
                esac
                ;;
          *)
                # Failed to stop
                log_end_msg 1
                ;;
        esac
        ;;
  *)
        #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
        echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
        exit 3
        ;;
esac
:


-- no debconf information

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