- #!/bin/sh
- # Receive RTP video and audio streams
- set -e
- CAMIP=${CAMIP:-$1} # origin host - default: use multicast group
- ACOUNT=${ACOUNT:-${2:-0}} # number of audio stream(s) to play - default: 0
- VCOUNT=${VCOUNT:-${3:-1}} # number of video stream(s) to display - default: 1
- AFORMAT=${AFORMAT:-$4} # AMR OPUS RAW - default: RAW
- VFORMAT=${VFORMAT:-$5} # H264 VP8 RAW - default: RAW
- ASINK=${ASINK:-autoaudiosink}
- VSINK=${VSINK:-autovideosink}
- set -u
- # set multicast groups (also for recorder host) if camera host is wildcard
- [ -n "$CAMIP" ] || RECMIP=239.255.0.1
- [ -n "$CAMIP" ] || CAMMIP=239.255.0.2
- RECHOST="${RECMIP:+address=$RECMIP auto-multicast=true}"
- CAMHOST="${CAMIP:+host=$CAMIP}${CAMMIP:+host=$CAMMIP auto-multicast=true}"
- # http://stackoverflow.com/a/42237307
- ABUFFERS=80000
- NETLATENCY=20
- case "$AFORMAT" in
- AMR)
- ACAPS=application/x-rtp,media=audio,clock-rate=8000,encoding-name=AMR,encoding-params="(string)1",octet-align="(string)1",payload=96
- ADEC="rtpamrdepay ! amrnbdec"
- ;;
- OPUS)
- ACAPS=audio/x-raw,rate=48000,channels=1,format=S16LE,layout=interleaved
- ADEC="rtpopusdepay ! opusdec"
- ;;
- RAW|'')
- ACAPS=application/x-rtp,media=audio,clock-rate=44100,encoding-name=L16,encoding-params=1,channels=1,payload=96
- ADEC="rtpL16depay"
- ;;
- *)
- echo "ERROR: Unsupported audio format: \"$AFORMAT\""
- exit 1
- ;;
- esac
- case "$VFORMAT" in
- H264)
- VCAPS=application/x-rtp,media=video,clock-rate=90000,payload=96,encoding-name=H264
- VDEC="rtph264depay ! avdec_h264"
- ;;
- VP8)
- VCAPS=application/x-rtp,media=video,clock-rate=90000,payload=96,encoding-name=VP8
- VDEC="rtpvp8depay ! vp8dec"
- ;;
- RAW|'')
- VCAPS=application/x-rtp,media=video,clock-rate=90000,encoding-name=RAW,sampling=YCbCr-4:2:0,depth="(string)8",width="(string)432",height="(string)240",payload=96,a-framerate=30
- VDEC="rtpvrawdepay ! videoconvert ! queue"
- ;;
- *)
- echo "ERROR: Unsupported video format: \"$VFORMAT\""
- exit 1
- ;;
- esac
- stream() {
- ID=$1
- CAPS=$2
- SINK=$3
- echo \
- udpsrc port=$((5000+ID-1)) $RECHOST caps=\""$CAPS"\" \
- ! rtpbin."recv_rtp_sink_$ID" rtpbin. \
- ! $SINK \
- udpsrc port=$((5010+ID-1)) $RECHOST \
- ! rtpbin."recv_rtcp_sink_$ID" \
- rtpbin."send_rtcp_src_$ID" \
- ! udpsink port=$((5020+ID-1)) $CAMHOST sync=false async=false
- }
- gst-launch-1.0 -v \
- rtpbin name=rtpbin latency=$NETLATENCY drop-on-latency=true \
- $(n=0;\
- for i in $(seq "$ACOUNT"); do n=$((n+1)); stream "$n" "$ACAPS" "$ADEC ! $ASINK buffer-time=$ABUFFERS"; done;\
- for i in $(seq "$VCOUNT"); do n=$((n+1)); stream "$n" "$VCAPS" "$VDEC ! $VSINK"; done;\
- )
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