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|
#!/bin/bash
#
# Encode programme using mplayer, connect through JACK
# to dabplus-enc or toolame
#
# Read webstream from URL using mplayer
# Launch dabplus-enc or toolame encoder
# connect both through JACK
# monitor processes, and restart if necessary
# Optionally send an email when restart happens
printerr() {
echo -e "\033[01;31m$1\033[0m"
}
printmsg() {
echo -e "\033[01;32m$1\033[0m"
}
set -u
# check number of arguments
if [[ "$#" -lt 3 ]] ; then
echo "Usage $0 url jack-id destination [volume] [encoder]"
echo "The volume setting is optional"
exit 1
fi
if [[ "$#" -gt 2 ]] ; then
URL=$1
ID=$2
DST=$3
fi
if [[ "$#" == 4 ]] ; then
VOL=$4
ENC="dabplus-enc"
elif [[ "$#" == 5 ]] ; then
VOL=$4
ENC=$5
else
VOL="0"
ENC="dabplus-enc"
fi
BITRATE=80
RATE=32 #kHz
if [[ "$ENC" == "toolame" && "$RATE" == "32" ]] ; then
echo "32kHz not supported for toolame"
exit 1
fi
mplayerpid=0
encoderpid=0
running=1
mplayer_ok=0
encoder_ok=0
# The trap for Ctrl-C
sigint_trap() {
printerr "Got Ctrl-C, killing mplayer and encoder"
running=0
if [[ "$mplayerpid" != "0" ]] ; then
kill -TERM $mplayerpid
sleep 2
kill -KILL $mplayerpid
fi
if [[ "$encoderpid" != "0" ]] ; then
kill -TERM $encoderpid
sleep 2
kill -KILL $encoderpid
fi
printmsg "Goodbye"
exit
}
trap sigint_trap SIGTERM
trap sigint_trap SIGINT
while [[ "$running" == "1" ]]
do
if [[ "$mplayerpid" == "0" ]] ; then
if [[ "$VOL" == "0" ]] ; then
mplayer -quiet -af resample=${RATE}000:0:2 -ao jack:name=$ID "$URL" &
mplayerpid=$!
else
mplayer -quiet -af resample=${RATE}000:0:2 -af volume=$VOL -ao jack:name=$ID "$URL" &
mplayerpid=$!
fi
printmsg "Started mplayer with pid $mplayerpid"
# give some time to mplayer to set up and
# wait until port becomes visible
timeout=10
while [[ "$mplayer_ok" == "0" ]]
do
printmsg "Waiting for mplayer to connect to jack ($timeout)"
sleep 1
mplayer_ok=$(jack_lsp $ID:out_0 | wc -l)
timeout=$(( $timeout - 1 ))
if [[ "$timeout" == "0" ]] ; then
printerr "mplayer doesn't connect to jack !"
kill $mplayerpid
break
fi
done
else
printmsg "No need to start mplayer: $mplayerpid"
fi
if [[ "$mplayer_ok" == "1" && "$encoder_ok" == "0" ]] ; then
if [[ "$ENC" == "dabplus-enc" ]] ; then
dabplus-enc -j ${ID}enc -l \
-b $BITRATE -r ${RATE}000 -f raw -o $DST &
encoderpid=$!
elif [[ "$ENC" == "toolame" ]] ; then
toolame -b $BITRATE -s $RATE \
-j ${ID}enc $DST &
encoderpid=$!
fi
# give some time to the encoder to set up and
# wait until port becomes visible
timeout=10
encoder_connected=0
while [[ "$encoder_connected" == "0" ]]
do
printmsg "Waiting for encoder to connect to jack ($timeout)"
sleep 1
encoder_connected=$(jack_lsp ${ID}enc:input0 | wc -l)
timeout=$(( $timeout - 1))
if [[ "$timeout" == "0" ]] ; then
printerr "encoder doesn't connect to jack !"
kill $encoderpid
break
fi
done
if [[ "$encoder_connected" == "1" ]] ; then
jack_connect ${ID}:out_0 ${ID}enc:input0 && \
jack_connect ${ID}:out_1 ${ID}enc:input1
connect_ret=$?
if [[ "$connect_ret" == "0" ]] ; then
encoder_ok=1
else
encoder_ok=0
fi
if [[ "$encoder_ok" == "1" ]] ; then
printmsg "Started encoder with pid $encoderpid"
else
if [[ "$encoderpid" != "0" ]] ; then
kill -TERM $encoderpid
fi
fi
fi
fi
sleep 5
checkloop=1
while [[ "$checkloop" == "1" ]]
do
sleep 2
kill -s 0 $mplayerpid
if [[ "$?" != "0" ]] ; then
# mplayer died
# we must kill jack-stdout, because we cannot reconnect it
# to a new mplayer, since we do not know the jack-stdout name.
# And it has no cmdline option to set one, Rrrrongntudtjuuu!
if [[ "$encoderpid" != "0" ]] ; then
kill -TERM $encoderpid
fi
# mark as dead
mplayerpid=0
mplayer_ok=0
encoderpid=0
encoder_ok=0
checkloop=0
printerr "Mplayer died"
fi
if [[ "$encoderpid" != "0" ]] ; then
kill -s 0 $encoderpid
if [[ "$?" != "0" ]] ; then
# the encoder died,
# no need to kill the mplayer, we can reconnect to it
encoderpid=0
encoder_ok=0
checkloop=0
printerr "Encoder died"
fi
fi
done
MAILTO=$(cat site/mail-warning.txt)
if [[ "$MAILTO" != "" ]] ; then
NOW=$(date)
mail -s "Encoder $ID restart $URL" "$MAILTO" << EOF
The encoder id:$ID
encoding $URL -> $DST using encode-jack was restarted at
$NOW
mplayer ok? $mplayer_ok
EOF
fi
sleep 5
done
|
