big shot

pi/bin/audio-capture.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+FIFO="${AUDIO_FIFO:-/var/lib/roverd/audio.pcm}"
+DEVICE="${AUDIO_DEVICE:-hw:0,0}"
+RATE="${AUDIO_RATE:-48000}"
+CHANNELS="${AUDIO_CHANNELS:-2}"
+FORMAT="${AUDIO_FORMAT:-S32_LE}"
+
+prepare_fifo() {
+	install -o roverd -g audio -m 0660 /dev/null "$FIFO" 2>/dev/null || true
+	if [[ ! -p "$FIFO" ]]; then
+		rm -f "$FIFO"
+		mkfifo "$FIFO"
+		chown roverd:audio "$FIFO"
+		chmod 0660 "$FIFO"
+	fi
+}
+
+prepare_fifo
+
+exec arecord -D "$DEVICE" -f "$FORMAT" -c "$CHANNELS" -r "$RATE" -q -t raw "$FIFO"