Convert to s6 style and remove Pulseaudio restart (#153)

* Convert overlay to new s6 style

This fixes an issue where restarting Pulseaudio on new hardware didn't
work. With this, we restart the pulseaudio service and wait for
readiness.

* Restart Pulseaudio on add and remove

Restart Pulseaudio in both cases, when adding and removing devices. Also
drop the unnecessary sleep.

* Drop rescue streams as it is deprecated

* Don't reload Pulseaudio

The necessary modules get reloaded by Supervisor now.

rootfs/etc/pulse/system.pa

@@ -40,10 +40,6 @@ load-module module-native-protocol-unix auth-anonymous=1 auth-cookie-enabled=0 s
 ### that look up the default sink/source get the right value
 load-module module-default-device-restore
 
-### Automatically move streams to the default sink if the sink they are
-### connected to dies, similar for sources
-load-module module-rescue-streams
-
 ### Make sure we always have a sink around, even if it is a null sink.
 load-module module-always-sink
 

rootfs/etc/services.d/alsa/run → rootfs/etc/s6-overlay/s6-rc.d/alsa/run

@@ -7,22 +7,15 @@ declare control
 while read -r line; do
 
     # Check if new ALSA mixer connecting
-    if [[ ! "${line}" =~ add.*(controlC[0-9]) ]]; then
+    if [[ "${line}" =~ add.*(controlC[0-9]) ]]; then
+        control=${BASH_REMATCH[1]}
+        bashio::log.info "Add ALSA mixer: ${control}"
+
+        # Run our soundconfig
+        soundconfig "${control}"
+    else
         bashio::log.debug "Skip ${line}"
         continue
-    else
-        control=${BASH_REMATCH[1]}
     fi
 
-    # Wait until new mixer is setup
-    bashio::log.info "New ALSA mixer: ${control}"
-    sleep 5
-
-    # Run our soundconfig
-    soundconfig "${control}"
-
-    # Restart PulseAudio
-    s6-svc -wD -d -T2500 "/var/run/s6/services/pulseaudio"
-    s6-svc -wU -u -T2500 "/var/run/s6/services/pulseaudio"
-
 done < <(udevadm monitor --subsystem-match=sound)

rootfs/etc/s6-overlay/s6-rc.d/alsa/type

@@ -0,0 +1 @@
+longrun

rootfs/etc/s6-overlay/s6-rc.d/pulseaudio/data/check

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+# Check if pulseaudio socket exists
+test -S /data/external/pulse.sock
+exit

rootfs/etc/s6-overlay/s6-rc.d/pulseaudio/notification-fd

@@ -0,0 +1 @@
+3

rootfs/etc/services.d/pulseaudio/run → rootfs/etc/s6-overlay/s6-rc.d/pulseaudio/run

@@ -17,4 +17,6 @@ fi
 export PULSE_STATE_PATH="/data/states"
 export LD_PRELOAD="/usr/local/lib/libjemalloc.so.2"
 
-exec pulseaudio --system --disallow-exit --exit-idle-time=-1 --disable-shm "${pulse_args[@]}" 
+exec s6-notifyoncheck -d -s 300 -w 300 -n 0 \
+     pulseaudio --system --disallow-exit --exit-idle-time=-1 \
+                --disable-shm "${pulse_args[@]}"

rootfs/etc/s6-overlay/s6-rc.d/pulseaudio/type

@@ -0,0 +1 @@
+longrun