music: Add bitvis

roles/music/templates/bitvis-tee.service

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+[Unit]
+Description=Multiplexer for bitvis
+Before=bitvis.service
+After=bitvis-http.service
+Requires=bitvis-http.service
+PropagatesStopTo=bitvis.service
+StopPropagatedFrom=bitvis.service
+
+[Service]
+Type=forking
+ExecStart=/usr/bin/screen -dmS bitvis-tee /opt/bitvis-tee.sh
+User={{ music_bitvis_user }}
+
+[Install]
+WantedBy=multi-user.target

roles/music/templates/bitvis-tee.sh

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+#!/bin/bash
+
+# {{ ansible_managed }}
+
+loop=`mktemp --suffix -bitvis`
+mkfifo -f "$loop"
+trap "rm -f $loop" EXIT TERM
+
+cat "$loop" | while true; do nc -4 -w 2 localhost 1338; done &
+nc -klp 1337 | tee "$loop" | while true; do nc -w 2 {{ music_bitpanel_host }} {{ music_bitpanel_port }}; done

roles/music/templates/bitvis.service

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+[Unit]
+Description=Audio visualizer for the bitpanel
+After=network.target
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=10s
+ExecStart=/usr/bin/pw-jack bitvis -a localhost -p 1337 -m localhost -o 6600
+ExecStartPost=/usr/bin/sleep 4
+ExecStartPost=/usr/bin/pw-link alsa_output.usb-ASUS_Xonar_U7_MKII-00.analog-stereo:monitor_FR bitvis:input
+User={{ music_audio_user }}
+Environment="XDG_RUNTIME_DIR=/run/user/{{ music_audio_user_id }}"
+
+[Install]
+WantedBy=multi-user.target