✨ Adds support for tweaking AirSonos using its configuration file

airsonos/config.json

@@ -15,6 +15,9 @@
   "hassio_api": true,
   "homeassistant_api": false,
   "host_network": true,
+  "map": [
+    "config:rw"
+  ],
   "options": {
     "log_level": "info",
     "address": "",

airsonos/rootfs/etc/airsonos.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<aircast>
+<common>
+<enabled>1</enabled>
+<stop_receiver>0</stop_receiver>
+<latency></latency>
+<codec>pcm</codec>
+<artwork></artwork>
+</common>
+<main_log>info</main_log>
+<cast_log>info</cast_log>
+<util_log>warn</util_log>
+<log_limit>-1</log_limit>
+</aircast>

airsonos/rootfs/etc/cont-init.d/50-airsonos.sh

@@ -8,8 +8,13 @@ source /usr/lib/hassio-addons/base.sh
 
 declare latency
 
-latency=$(hass.config.get 'latency_rtp')
+# Create a configuration file, if it does not exist yet
+if ! hass.file_exists '/config/airsonos.xml'; then
+    cp /etc/airsonos.xml /config/airsonos.xml
+fi
 
+# Warn if latency is below 500ms
+latency=$(hass.config.get 'latency_rtp')
 if [[ "${latency}" -lt 500 && "${latency}" -ne 0 ]]; then
     hass.log.warning \
         'Setting the RTP latency of AirPlay audio below 500ms is not recommended!'

airsonos/rootfs/etc/services.d/airsonos/run

@@ -13,6 +13,12 @@ hass.log.info 'Starting the AirSonos server'
 # Non-interactive
 options+=(-Z)
 
+# Configuration file
+options+=(-x '/config/airsonos.xml')
+
+# Update configuration file when new devices where detected
+options+=(-I)
+
 # Bind to a specific interface
 if hass.config.has_value 'address'; then
     options+=(-b "$(hass.config.get 'address'):$(hass.config.get 'port')")