music: Set up ampswitch for MPD and Librespot

roles/music/handlers/main.yaml

@@ -75,3 +75,12 @@
     name: skipbutton
     state: restarted
     daemon_reload: true
+
+- name: restart ampswitch
+  ansible.builtin.systemd:
+    name: "ampswitch-{{ item }}"
+    state: restarted
+    daemon_reload: true
+  with_items:
+    - librespot
+    - mpd

roles/music/tasks/ampswitch.yaml

@@ -0,0 +1,34 @@
+---
+- name: Install ampswitch depencies
+  apt:
+    name:
+      - libboost-dev
+      - libboost-dev
+      - nlohmann-json3-dev
+
+- name: Install ampswitch service file
+  template:
+    src: ampswitch.service
+    dest: /etc/systemd/system/ampswitch-{{ item.instance }}.service
+    owner: root
+    group: root
+    mode: 0755
+  with_items:
+    - instance: mpd
+      pw_inputs:
+        - "Music Player Daemon:output_FL"
+        - "Music Player Daemon:output_FR"
+    - instance: librespot
+      pw_inputs:
+        - "librespot:out_0"
+        - "librespot:out_1"
+  notify: restart ampswitch
+
+- name: Enable ampswitch
+  ansible.builtin.systemd:
+    name: "ampswitch-{{ item }}"
+    state: started
+    enabled: true
+  with_items:
+    - librespot
+    - mpd

roles/music/tasks/main.yaml

@@ -40,3 +40,9 @@
     file: soundboard.yaml
   tags:
     - music_soundboard
+
+- name: Ampswitch
+  ansible.builtin.import_tasks:
+    file: ampswitch.yaml
+  tags:
+    - music_ampswitch

roles/music/templates/ampswitch.service

@@ -0,0 +1,20 @@
+[Unit]
+Description=Script hook for {{ item }} playback
+After=network.target {{ item.instance }}.service
+Requires={{ item.instance }}.service
+StopPropagatedFrom={{ item.instance }}.service
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=10s
+ExecStart=/usr/bin/pw-jack ampswitch --jack-name ampswitch-{{ item.instance }} --on-command /opt/on-{{ item.instance }}-start.sh --switch-time 10 --trigger-level 0.001
+ExecStartPost=/usr/bin/sleep 4
+{% for pw_input in item.pw_inputs %}
+ExecStartPost=-/usr/bin/pw-link "{{ pw_input }}" ampswitch-{{ item.instance }}:Input
+{% endfor %}
+User=root
+Environment="XDG_RUNTIME_DIR=/run/user/{{ music_audio_user_id }}"
+
+[Install]
+WantedBy=multi-user.target