#!/bin/sh
# Run multiple rtpplays simultaneously.

USAGE="usage: multidump [-F format] [-t minutes] [-x bytes] filebase [[addr]/port[/ttl] ...]"

args=""  # The flags to pass to each rtpplay
pids=""  # The list process IDs of the rtpplay processes
count=1  # The count of rtpplay sessions.

# Catch signals that need to be passed down to rtpplay.
trap 'kill $pids' 1   # SIGHUP
trap 'kill $pids' 2   # SIGINT
trap 'kill $pids' 15  # SIGTERM

# Parse the flags.  Using getopt is the easiest way to tell where the
# options start.
while getopts 'p:Tv' c
do
    case $c in
    p)          args="${args} -$c ${OPTARG}";;
    t | v)      args="$args -$c";;
    \?)     echo $USAGE
	    exit 2;;
    esac
done
shift `expr $OPTIND - 1`

# Make sure we have a filebase, and get it.
if expr $# \< 1 > /dev/null
then
    echo $USAGE
    exit 2;
fi
filebase=$1
shift

# Get each of the destination addresses, and start an rtpdump for it.
# Its output goes to filebase.count.
while expr $# \> 0 > /dev/null
do
    echo "rtpplay $args -f $filebase.$count $1 > /dev/null &"
    rtpplay $args -f $filebase.$count $1 > /dev/null &
    pids="$pids $!"
    count=`expr $count + 1`
    shift
done

# Wait for all the processes to finish.
wait $pids