lucianoandClaude Opus 4.8
c8d12d789f
The Pi 5 vc4hdmi exposes only IEC958 and has no hardware mixing, so raw ALSA is exclusive: once Chromium's Web Audio stream holds the HDMI device, the media-element audio (the actual track) can't open it and stays silent even though the analyser sees the signal. Install PipeWire + pipewire-pulse as a software mixer (it also handles the IEC958 conversion) so every Chromium stream mixes onto HDMI. Enable lingering so the user services start at boot; set the HDMI sink to full volume. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
82 lines
2.9 KiB
Bash
82 lines
2.9 KiB
Bash
#!/usr/bin/env bash
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# One-shot installer for Raspberry Pi OS (Bookworm). Run from the project folder:
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# bash scripts/install-pi.sh
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set -e
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DIR="$(cd "$(dirname "$0")/.." && pwd)"
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USER_NAME="$(whoami)"
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NODE_BIN="$(command -v node || echo /usr/bin/node)"
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echo "==> Installo dipendenze di sistema (node, ffmpeg, chromium, cage)…"
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sudo apt update
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sudo apt install -y nodejs npm ffmpeg cage curl chromium-browser || \
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sudo apt install -y nodejs npm ffmpeg cage curl chromium
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# Audio: il vc4hdmi del Pi 5 espone solo il formato IEC958 e NON ha mixing
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# hardware, quindi ALSA grezzo è esclusivo (un solo stream) e l'audio dei file
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# resta muto mentre Chromium tiene il device. PipeWire fa da mixer software e
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# gestisce la conversione IEC958, così tutti gli stream di Chromium escono su HDMI.
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echo "==> Installo PipeWire (mixer audio per l'uscita HDMI)…"
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sudo apt install -y pipewire pipewire-pulse pipewire-alsa wireplumber
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sudo loginctl enable-linger "$USER_NAME" # i servizi utente partono al boot
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export XDG_RUNTIME_DIR="/run/user/$(id -u)"
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systemctl --user daemon-reload 2>/dev/null || true
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systemctl --user enable --now pipewire.socket pipewire-pulse.socket wireplumber.service 2>/dev/null || true
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systemctl --user start pipewire pipewire-pulse 2>/dev/null || true
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sleep 2
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# Porta l'uscita HDMI a volume pieno e smutala (best-effort).
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HDMI_SINK="$(wpctl status 2>/dev/null | grep -iE 'HDMI' | grep -oE '^\s*\*?\s*[0-9]+' | grep -oE '[0-9]+' | head -1)"
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[ -n "$HDMI_SINK" ] && { wpctl set-volume "$HDMI_SINK" 1.0; wpctl set-mute "$HDMI_SINK" 0; }
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echo "==> Installo i pacchetti npm…"
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cd "$DIR"
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npm install --omit=dev
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node scripts/gen-icons.js || true
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chmod +x scripts/kiosk.sh
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echo "==> Creo i servizi systemd…"
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sudo tee /etc/systemd/system/djvisualizer-server.service >/dev/null <<UNIT
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[Unit]
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Description=DJ Visualizer Pi server
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After=network-online.target
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Wants=network-online.target
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[Service]
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WorkingDirectory=$DIR
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ExecStart=$NODE_BIN server.js
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Restart=always
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User=$USER_NAME
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Environment=PORT=8080
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[Install]
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WantedBy=multi-user.target
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UNIT
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sudo tee /etc/systemd/system/djvisualizer-kiosk.service >/dev/null <<UNIT
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[Unit]
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Description=DJ Visualizer kiosk (Chromium fullscreen on HDMI)
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After=djvisualizer-server.service systemd-user-sessions.target
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Wants=djvisualizer-server.service
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[Service]
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User=$USER_NAME
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PAMName=login
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TTYPath=/dev/tty1
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ExecStartPre=/bin/sh -c 'until curl -sf http://localhost:8080/ >/dev/null; do sleep 1; done'
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ExecStart=/usr/bin/cage -- /bin/bash $DIR/scripts/kiosk.sh
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Restart=always
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[Install]
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WantedBy=multi-user.target
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UNIT
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sudo systemctl daemon-reload
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sudo systemctl enable --now djvisualizer-server.service
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sudo systemctl enable --now djvisualizer-kiosk.service
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IP="$(hostname -I | awk '{print $1}')"
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echo
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echo "==> Fatto!"
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echo " Output (HDMI): parte da solo in kiosk."
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echo " Telecomando: http://$IP:8080/ (apri dal telefono, stessa rete)"
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echo " Media: copia i brani in $DIR/media/ (o carica dall'app)"
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