#!/bin/bash

_log(){
	echo "$(date '+%Y-%m-%d %H:%M:%S') - ${streamhash} - $1" >> /tmp/ffmpeg.log
}

_log_para(){
	echo "$1" | fold -w 120 | sed "s/^.*$/$(date '+%Y-%m-%d %H:%M:%S') - ${streamhash} -          = &/" >> /tmp/ffmpeg.log
}

_term(){
	rm /tmp/ffmpeg-${streamhash}.stderr
	_log "*** KILLCHILD ***"
	kill -TERM "$childpid" 2>/dev/null
}

trap _term SIGTERM

paramvs=$@
args=()
while [[ $# -gt 0 ]]
do
case "$1" in
	-i)
		shift
		movie="$1"
		args+=("-i" "$1")
	;;
	*)
		args+=("$1")
		stream="$1"
	;;
esac
shift
done

streamhash=`echo $stream | cut -d / -f 5 | cut -d _ -f 2`
bin=/var/packages/ffmpeg/target/bin/ffmpeg

if echo $stream | grep "/tmp/SYNOVIDEO_ffmpeg_.*\.srt"; then
	streamhash=`echo $stream | cut -d _ -f 3 | sed -e 's/.srt//g'`
	bin=/var/packages/VideoStation/target/bin/ffmpeg.orig
fi

_log "*** PROCESS START ***"
_log "MOVIE    = $movie"
_log "FFMPEG   = $bin"
_log_para "$paramvs"

set -- "${args[@]}"

startexectime=`date +%s`

$bin "$@" 2> /tmp/ffmpeg-${streamhash}.stderr &
childpid=$!

_log "CHILDPID = $childpid"

wait $childpid

stopexectime=`date +%s`
if test $((stopexectime-startexectime)) -lt 3; then
	_log "STDERR   ="
	_log_para "`tail -n 10 /tmp/ffmpeg-${streamhash}.stderr`"
fi

_log "*** CHILD END ***"

if grep "Conversion failed!" /tmp/ffmpeg-${streamhash}.stderr; then
	
	_log "*** RW MODE ***"
	
	args=()
	while [[ $# -gt 0 ]]
	do
	case "$1" in
		-vf)
			shift
			scale_w=`echo "${1}" | sed -e 's/.*=w=//g' | sed -e 's/:h=.*//g'`
			scale_h=`echo "${1}" | sed -e 's/.*:h=//g'`
			if let ${scale_w} AND let ${scale_h}; then
				args+=("-vf" "scale_vaapi=w=${scale_w}:h=${scale_h}:format=nv12,hwupload,setsar=sar=1")
			else
				args+=("-vf" "scale_vaapi=format=nv12,hwupload,setsar=sar=1")
			fi
		;;
		*)
			args+=("$1")
		;;
	esac
	shift
	done
	set -- "${args[@]}"
	paramrw=$@
	
	_log "FFMPEG   = $bin"
	_log_para "$paramrw"

	startexectime=`date +%s`
	
	$bin "$@" 2> /tmp/ffmpeg-${streamhash}.stderr &
	childpid=$!
	
	_log "CHILDPID = $childpid"

	wait $childpid

	stopexectime=`date +%s`
	if test $((stopexectime-startexectime)) -lt 3; then
		_log "STDERR   ="
		_log_para "`tail -n 10 /tmp/ffmpeg-${streamhash}.stderr`"
	fi
	
	_log "*** CHILD END ***"
fi

_log "*** PROCESS END ***"

rm /tmp/ffmpeg-${streamhash}.stderr