Files
MultiRoombaRover/pi/bin/whip-publisher.sh
T

73 lines
1.6 KiB
Bash

#!/usr/bin/env bash
set -euo pipefail
ENV_FILE="${WHIP_ENV_FILE:-/var/lib/roverd/whip.env}"
if [[ ! -f "$ENV_FILE" ]]; then
echo "Environment file ${ENV_FILE} missing; cannot publish" >&2
exit 1
fi
# shellcheck disable=SC1090
source "$ENV_FILE"
: "${WHIP_URL:?WHIP_URL not set in ${ENV_FILE}}"
VIDEO_WIDTH="${VIDEO_WIDTH:-1280}"
VIDEO_HEIGHT="${VIDEO_HEIGHT:-720}"
VIDEO_FPS="${VIDEO_FPS:-30}"
VIDEO_BITRATE="${VIDEO_BITRATE:-3000000}"
FFMPEG_BIN="${FFMPEG_BIN:-/usr/bin/ffmpeg}"
if [[ -n "${LIBCAMERA_BIN:-}" ]]; then
LIBCAMERA_BIN_PATH="$LIBCAMERA_BIN"
elif command -v rpicam-vid >/dev/null 2>&1; then
LIBCAMERA_BIN_PATH="$(command -v rpicam-vid)"
elif command -v libcamera-vid >/dev/null 2>&1; then
LIBCAMERA_BIN_PATH="$(command -v libcamera-vid)"
else
echo "Neither rpicam-vid nor libcamera-vid found; install the libcamera apps." >&2
exit 1
fi
if [[ ! -x "$LIBCAMERA_BIN_PATH" ]]; then
echo "Video capture binary not executable at ${LIBCAMERA_BIN_PATH}" >&2
exit 1
fi
if [[ ! -x "$FFMPEG_BIN" ]]; then
echo "ffmpeg not found at ${FFMPEG_BIN}" >&2
exit 1
fi
run_pipeline() {
"${LIBCAMERA_BIN_PATH}" \
--inline \
--timeout 0 \
--width "${VIDEO_WIDTH}" \
--height "${VIDEO_HEIGHT}" \
--framerate "${VIDEO_FPS}" \
--bitrate "${VIDEO_BITRATE}" \
--codec h264 \
--denoise cdn_off \
--nopreview \
--output - |
"${FFMPEG_BIN}" \
-hide_banner \
-loglevel warning \
-f h264 \
-i pipe:0 \
-c:v copy \
-an \
-f whip \
"${WHIP_URL}"
}
while true; do
if run_pipeline; then
exit 0
fi
echo "WHIP publisher exited, restarting in 2s..." >&2
sleep 2
done