From b450c785f35dc0dd66990b3a75aa5e96b62d0a88 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Thu, 11 May 2017 11:48:26 +0200
Subject: Process audio before video.

---
 bin/send-gst-rtp-v-a | 43 ++++++++++++++++++++++---------------------
 1 file changed, 22 insertions(+), 21 deletions(-)

(limited to 'bin/send-gst-rtp-v-a')

diff --git a/bin/send-gst-rtp-v-a b/bin/send-gst-rtp-v-a
index f8b548b..aaadd38 100755
--- a/bin/send-gst-rtp-v-a
+++ b/bin/send-gst-rtp-v-a
@@ -18,49 +18,50 @@ set -u
 RECHOST="${RECIP:+host=$RECIP}${RECMIP:+host=$RECMIP auto-multicast=true}"
 CAMHOST="${CAMMIP:+address=$CAMMIP auto-multicast=true}"
 
-HEIGHT=240
-FRAMERATE=25
 AUDIORATE=48000
 
-VCAPS=video/x-raw,height="$HEIGHT"
-ACAPS=audio/x-raw,rate="$AUDIORATE",channels=2,depth=16
-
 # * http://stackoverflow.com/a/42237307
 ABUFFERS=20000
 
+HEIGHT=240
+FRAMERATE=25
+
+ACAPS=audio/x-raw,rate="$AUDIORATE",channels=2,depth=16
+VCAPS=video/x-raw,height="$HEIGHT"
+
 # * force threads using queues - see http://stackoverflow.com/a/30738533
 # * generous queue sizes inspired by https://wiki.xiph.org/GST_cookbook
 QUEUE=" queue max-size-bytes=100000000 max-size-time=0"
 
-case "$VFORMAT" in
- H264)
-  # * let x264 use low-latency sliced-threads (i.e. don't disable treads)
-  VENC="x264enc speed-preset=ultrafast tune=zerolatency bitrate=800 byte-stream=true key-int-max=15 intra-refresh=true option-string=\"slice-max-size=8192:vbv-maxrate=80:vbv-bufsize=10\" ! video/x-h264,profile=baseline ! $QUEUE ! rtph264pay"
+case "$AFORMAT" in
+ AMR)
+  AENC="amrnbenc ! $QUEUE ! rtpamrpay"
   ;;
- VP8)
-  VENC="vp8enc cpu-used=10 threads=2 deadline=10000 ! video/x-vp8 ! $QUEUE ! rtpvp8pay"
+ OPUS)
+  AENC="opusenc ! $QUEUE ! rtpopuspay"
   ;;
  RAW|'')
-  VENC="rtpvrawpay"
+  AENC="rtpL16pay"
   ;;
  *)
-  echo "ERROR: Unsupported video format: \"$VFORMAT\""
+  echo "ERROR: Unsupported audio format: \"$AFORMAT\""
   exit 1
   ;;
 esac
 
-case "$AFORMAT" in
- AMR)
-  AENC="amrnbenc ! $QUEUE ! rtpamrpay"
+case "$VFORMAT" in
+ H264)
+  # * let x264 use low-latency sliced-threads (i.e. don't disable treads)
+  VENC="x264enc speed-preset=ultrafast tune=zerolatency bitrate=800 byte-stream=true key-int-max=15 intra-refresh=true option-string=\"slice-max-size=8192:vbv-maxrate=80:vbv-bufsize=10\" ! video/x-h264,profile=baseline ! $QUEUE ! rtph264pay"
   ;;
- OPUS)
-  AENC="opusenc ! $QUEUE ! rtpopuspay"
+ VP8)
+  VENC="vp8enc cpu-used=10 threads=2 deadline=10000 ! video/x-vp8 ! $QUEUE ! rtpvp8pay"
   ;;
  RAW|'')
-  AENC="rtpL16pay"
+  VENC="rtpvrawpay"
   ;;
  *)
-  echo "ERROR: Unsupported audio format: \"$AFORMAT\""
+  echo "ERROR: Unsupported video format: \"$VFORMAT\""
   exit 1
   ;;
 esac
@@ -82,8 +83,8 @@ stream() {
 gst-launch-1.0 -v \
  rtpbin name=rtpbin \
  $(n=0;\
-  for dev in $VDEVICES; do n=$((n+1)); stream "$n" "v4l2src device=$dev ! $QUEUE ! videoconvert ! $VCAPS ! $QUEUE ! $VENC ! $QUEUE"; done;\
   for dev in $ADEVICES; do n=$((n+1)); stream "$n" "alsasrc device=$dev buffer-time=$ABUFFERS ! $QUEUE ! audioconvert ! $QUEUE ! $AENC ! $QUEUE"; done;\
+  for dev in $VDEVICES; do n=$((n+1)); stream "$n" "v4l2src device=$dev ! $QUEUE ! videoconvert ! $VCAPS ! $QUEUE ! $VENC ! $QUEUE"; done;\
  )
 
 set -e
-- 
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