Initial Phoenix analyzer
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Mikei386
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#!/bin/bash
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# ==========================================
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# Analyzer Kiosk Session for Raspberry Pi OS
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#
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# This script launches Phoenix and the audio analyser UI in kiosk mode
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# using Chromium. It assumes that a lightweight HTTP server is running
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# on http://localhost to serve the analyser files. The X session
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# is started by the accompanying systemd unit. Phoenix owns the audio
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# hardware; Chromium only renders the GUI.
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# ==========================================
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set -euo pipefail
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# Resolve the installation root from the actual script location so the
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# setup does not depend on a hard-coded home directory.
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SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
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# ----- Logging -----
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# Write logs to the kiosk user's home directory. Use an
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# environment variable to allow overrides.
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LOG="${LOG:-/home/analyzer/analyzer-kiosk.log}"
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KIOSK_USER="${KIOSK_USER:-analyzer}"
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CHROME_USER_DATA_DIR="${CHROME_USER_DATA_DIR:-/data/chrome-analyzer}"
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PHOENIX_DIR="${PHOENIX_DIR:-$SCRIPT_DIR}"
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PHOENIX_BIN="${PHOENIX_BIN:-$PHOENIX_DIR/target/release/phoenix}"
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PHOENIX_LOG_FILE="${PHOENIX_LOG_FILE:-/home/analyzer/phoenix.log}"
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# Listen on all interfaces so Phoenix is reachable both locally on the Pi
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# and from external browsers in the LAN.
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PHOENIX_LISTEN="${PHOENIX_LISTEN:-0.0.0.0:8789}"
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PHOENIX_ALSA_DEVICE="${PHOENIX_ALSA_DEVICE:-hw:CARD=CODEC,DEV=0}"
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PHOENIX_SAMPLE_RATE="${PHOENIX_SAMPLE_RATE:-48000}"
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PHOENIX_PERIOD_SIZE="${PHOENIX_PERIOD_SIZE:-128}"
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PHOENIX_BUFFER_SIZE="${PHOENIX_BUFFER_SIZE:-512}"
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PHOENIX_GLOBAL_CONFIG_PATH="${PHOENIX_GLOBAL_CONFIG_PATH:-/home/analyzer/.config/phoenix/global-config.json}"
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PHOENIX_RECORDINGS_DIR_ANALYZER="${PHOENIX_RECORDINGS_DIR_ANALYZER:-/home/analyzer/Aufnahmen}"
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PHOENIX_RECORDINGS_DIR_VOLUMIO="${PHOENIX_RECORDINGS_DIR_VOLUMIO:-/home/volumio/Aufnahmen}"
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PHOENIX_LR_FRAC_DELAY_ENABLED="${PHOENIX_LR_FRAC_DELAY_ENABLED:-true}"
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PHOENIX_LR_FRAC_DELAY_SAMPLES="${PHOENIX_LR_FRAC_DELAY_SAMPLES:-0.996}"
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mkdir -p "$(dirname "$LOG")"
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exec >>"$LOG" 2>&1
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echo "=== $(date): session.sh START ==="
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configure_locale() {
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if locale -a 2>/dev/null | grep -Eiq '^de_DE\.(utf8|UTF-8)$'; then
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export LANG=de_DE.UTF-8
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export LC_ALL=de_DE.UTF-8
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elif locale -a 2>/dev/null | grep -Eiq '^C\.UTF-?8$'; then
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export LANG=C.UTF-8
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export LC_ALL=C.UTF-8
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else
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export LANG=C
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export LC_ALL=C
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fi
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}
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# ----- Environment -----
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export DISPLAY=:0
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configure_locale
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if [ ! -x "$PHOENIX_BIN" ] || [ ! -s "$PHOENIX_BIN" ]; then
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echo "Phoenix binary missing, empty or not executable: $PHOENIX_BIN"
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exit 1
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fi
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if pgrep -f "$PHOENIX_BIN" >/dev/null 2>&1; then
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echo "Phoenix already running; reusing existing process."
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else
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echo "Starting Phoenix: $PHOENIX_BIN"
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if [ "$(id -u)" -eq 0 ]; then
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install -d -o analyzer -g analyzer -m 0755 "$PHOENIX_RECORDINGS_DIR_ANALYZER" || true
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install -d -o volumio -g volumio -m 0755 "$PHOENIX_RECORDINGS_DIR_VOLUMIO" || true
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else
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mkdir -p "$PHOENIX_RECORDINGS_DIR_ANALYZER" || true
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mkdir -p "$PHOENIX_RECORDINGS_DIR_VOLUMIO" || true
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fi
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if [ "$(id -u)" -eq 0 ]; then
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install -o "$KIOSK_USER" -g "$KIOSK_USER" -m 0644 /dev/null "$PHOENIX_LOG_FILE" 2>/dev/null || true
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sudo -u "$KIOSK_USER" env \
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PHOENIX_LISTEN="$PHOENIX_LISTEN" \
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PHOENIX_ALSA_DEVICE="$PHOENIX_ALSA_DEVICE" \
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PHOENIX_SAMPLE_RATE="$PHOENIX_SAMPLE_RATE" \
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PHOENIX_PERIOD_SIZE="$PHOENIX_PERIOD_SIZE" \
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PHOENIX_BUFFER_SIZE="$PHOENIX_BUFFER_SIZE" \
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PHOENIX_GLOBAL_CONFIG_PATH="$PHOENIX_GLOBAL_CONFIG_PATH" \
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PHOENIX_RECORDINGS_DIR_ANALYZER="$PHOENIX_RECORDINGS_DIR_ANALYZER" \
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PHOENIX_RECORDINGS_DIR_VOLUMIO="$PHOENIX_RECORDINGS_DIR_VOLUMIO" \
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PHOENIX_LR_FRAC_DELAY_ENABLED="$PHOENIX_LR_FRAC_DELAY_ENABLED" \
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PHOENIX_LR_FRAC_DELAY_SAMPLES="$PHOENIX_LR_FRAC_DELAY_SAMPLES" \
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"$PHOENIX_BIN" >>"$PHOENIX_LOG_FILE" 2>&1 &
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else
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touch "$PHOENIX_LOG_FILE"
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env \
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PHOENIX_LISTEN="$PHOENIX_LISTEN" \
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PHOENIX_ALSA_DEVICE="$PHOENIX_ALSA_DEVICE" \
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PHOENIX_SAMPLE_RATE="$PHOENIX_SAMPLE_RATE" \
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PHOENIX_PERIOD_SIZE="$PHOENIX_PERIOD_SIZE" \
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PHOENIX_BUFFER_SIZE="$PHOENIX_BUFFER_SIZE" \
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PHOENIX_GLOBAL_CONFIG_PATH="$PHOENIX_GLOBAL_CONFIG_PATH" \
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PHOENIX_RECORDINGS_DIR_ANALYZER="$PHOENIX_RECORDINGS_DIR_ANALYZER" \
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PHOENIX_RECORDINGS_DIR_VOLUMIO="$PHOENIX_RECORDINGS_DIR_VOLUMIO" \
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PHOENIX_LR_FRAC_DELAY_ENABLED="$PHOENIX_LR_FRAC_DELAY_ENABLED" \
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PHOENIX_LR_FRAC_DELAY_SAMPLES="$PHOENIX_LR_FRAC_DELAY_SAMPLES" \
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"$PHOENIX_BIN" >>"$PHOENIX_LOG_FILE" 2>&1 &
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fi
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fi
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PHOENIX_HEALTH_TARGET="$PHOENIX_LISTEN"
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case "$PHOENIX_HEALTH_TARGET" in
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0.0.0.0:*) PHOENIX_HEALTH_TARGET="127.0.0.1:${PHOENIX_HEALTH_TARGET#*:}" ;;
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:::*) PHOENIX_HEALTH_TARGET="[::1]:${PHOENIX_HEALTH_TARGET#*:}" ;;
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esac
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PHOENIX_HEALTH_URL="http://${PHOENIX_HEALTH_TARGET}/health"
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if command -v curl >/dev/null 2>&1; then
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echo "Waiting for Phoenix health: $PHOENIX_HEALTH_URL"
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for _ in $(seq 1 40); do
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if curl -fsS "$PHOENIX_HEALTH_URL" >/dev/null 2>&1; then
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echo "Phoenix is ready."
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break
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fi
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sleep 0.25
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done
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else
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sleep 2
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fi
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# ----- Start the kiosk browser -----
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# Disable screen blanking and power management if xset is available.
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if command -v xset >/dev/null 2>&1; then
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xset -dpms || true
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xset s off || true
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xset s noblank || true
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fi
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# Ensure the Chromium profile directory exists with stable ownership,
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# otherwise Chromium may fall back to a profile under the user's home.
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if [ "$(id -u)" -eq 0 ]; then
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install -d -m 0755 /data
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install -d -o "$KIOSK_USER" -g "$KIOSK_USER" -m 0700 "$CHROME_USER_DATA_DIR"
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else
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mkdir -p "$CHROME_USER_DATA_DIR"
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chmod 700 "$CHROME_USER_DATA_DIR"
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fi
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# Launch Chromium as the non-root kiosk user. The analyser UI is served
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# over HTTP on localhost. Audio capture is handled exclusively by
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# Phoenix, so Chromium only renders the GUI.
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sudo -u "$KIOSK_USER" /usr/bin/chromium \
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--kiosk \
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--touch-events \
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--user-data-dir="$CHROME_USER_DATA_DIR" \
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--load-extension='/data/VirtualKeyboard' \
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--no-first-run --no-default-browser-check \
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--disable-session-crashed-bubble --disable-restore-session-state --restore-last-session=false \
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--disable-background-networking --disable-remote-extensions \
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--disable-pinch \
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--force-device-scale-factor=1 \
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--lang=de-DE --disable-translate --disable-features=Translate,TranslateUI \
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--memory-pressure-off \
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--max-active-webgl-contexts=1 \
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http://localhost/index.html \
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>>"$LOG" 2>&1
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echo "=== $(date): session.sh END ==="
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