new room cam service

roomcam-service/room-cam-snapshot.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Configurable via environment
+DEVICE="${DEVICE:-/dev/video0}"
+RESOLUTION="${RESOLUTION:-640x480}"
+QUALITY="${QUALITY:-5}" # ffmpeg MJPEG quality (lower is better)
+PORT="${PORT:-8088}"
+WORKDIR="${WORKDIR:-/run/roomcam}"
+
+mkdir -p "${WORKDIR}"
+SNAPSHOT_PATH="${WORKDIR}/snapshot.jpg"
+
+cleanup() {
+  [[ -n "${FFMPEG_PID:-}" ]] && kill "${FFMPEG_PID}" 2>/dev/null || true
+  [[ -n "${HTTP_PID:-}" ]] && kill "${HTTP_PID}" 2>/dev/null || true
+}
+trap cleanup EXIT
+trap 'exit 0' SIGTERM INT
+
+/usr/bin/ffmpeg \
+  -loglevel warning -nostats \
+  -f v4l2 -input_format mjpeg -video_size "${RESOLUTION}" -i "${DEVICE}" \
+  -q:v "${QUALITY}" \
+  -f image2 -update 1 "${SNAPSHOT_PATH}" &
+FFMPEG_PID=$!
+
+/usr/bin/python3 -u -m http.server "${PORT}" --directory "${WORKDIR}" --bind 0.0.0.0 &
+HTTP_PID=$!
+
+wait -n "${FFMPEG_PID}" "${HTTP_PID}"