#!/bin/bash

SNOWMIX=/usr/local/lib/Snowmix-0.5.1

if [ "X$SNOWMIX_PORT" = X ] ; then export SNOWMIX_PORT=9999 ;fi
if [ "X$SNOWMIX_IP" = X ] ; then export SNOWMIX_IP=127.0.0.1 ;fi

if [ $# -lt 1 ] ; then
  echo -e "Missing argument \nUsage $0 <input file>"
  exit 1
fi

# Set video feed and audio feed id
feed_id=2
audio_feed_id=2
source="/home/nginx/videos/$1"

if [ ! -f "$source" ]; then
	echo "'$source' is not a file or whatever"
	exit 1
fi

# Check for SNOWMIX variable and the snowmix and gstreamer settings
if [ ! -f "$SNOWMIX/scripts/gstreamer-settings" -o ! -f "$SNOWMIX/scripts/snowmix-settings" ] ; then
  echo "Can not find the the file scripts/gstreamer-settings or scripts/snowmix-settings"
  echo "in the directory set by the enviroment variable SNOWMIX"
  echo "You need to se the environment variable SNOWMIX to the base of the Snowmix installed directory"
  exit 1
fi

# Load the Snowmix and GStreamer settings
. $SNOWMIX/scripts/gstreamer-settings
. $SNOWMIX/scripts/snowmix-settings
# This will set
# a) feed_rate
# b) feed_channels
# c) feed_control_pipe
# d) feed_width
# e) feed_height
# f) ctrsocket
# g) system_width
# h) system_height
# i) ratefraction
# j) snowmix
# k) channels
# l) rate


if [ X$feed_control_pipe = X -o X$system_width = X -o X$system_height = X ] ; then
  echo Failed to get control pipe or width or height from running snowmix
  exit 1
fi

#echo "Snowmix Geometry        : $system_width x $system_height"
#echo "Snowmix control socket  : $ctrsocket"
echo "Video feed geometry     : $feed_width x $feed_height"
echo "Video control socket    : $feed_control_pipe"
echo "Video and audio feed id : $feed_id $audio_feed_id"

if [ X$feed_rate = X -o X$feed_channels = X ] ; then
  echo Failed to get rate or channels from running snowmix
  echo Disabling audio
else
  echo "Audio rate and channels : $feed_rate $feed_channels"
fi


SRC="filesrc location=$source ! $decodebin name=decoder ! $VIDEOCONVERT "
SHMSIZE='shm-size='`echo "$feed_width * $feed_height * 4 * 26"|bc`
SHMOPTION="wait-for-connection=1 sync=true"
SHMSINK1="shmsink socket-path=$feed_control_pipe $SHMSIZE $SHMOPTION"
#SCALE="$VIDEOCONVERT ! videoscale ! $VIDEOCONVERT"
SCALE="videoscale ! $VIDEOCONVERT"
AUDIOFORMAT="$AUDIOS16LE"', rate='$feed_rate', channels='$feed_channels
VIDEOFORMAT=$VIDEOBGRA', width='$feed_width', height='$feed_height', framerate='$ratefraction
VIDEOFORMAT=$VIDEOBGRA', width='$feed_width', height='$feed_height

rm -f $feed_control_pipe

if [ X$feed_rate != X -a X$feed_channels != X ] ; then
	  (
		echo 'audio feed ctr isaudio '$audio_feed_id
		$gstlaunch -e $SRC ! \
		videorate ! $SCALE ! $VIDEOFORMAT ! $SHMSINK1 decoder. \
		! queue ! audioconvert ! audioresample ! $AUDIOFORMAT ! fdsink fd=3 sync=true 3>&1 1>&2
	  ) | nc $SNOWMIX_IP $SNOWMIX_PORT
else
	$gstlaunch -e -q $SRC ! \
	  $SCALE		! \
	  $VIDEOFORMAT	! \
	  $SHMSINK1 
	$gstlaunch -e -q $SRC ! \
	  $SCALE		! \
	  $VIDEOFORMAT	! \
	  $SHMSINK1 
fi