#!/bin/sh
 
# Check prerequirements (assume that 'rm', 'mkfifo' etc are available)
echo "Checking prerequirements..."
if ! (which mktemp && which pv && which cvlc); then
    echo "Missing required programs. See output for info." >&2
    exit 1
fi
 
source="$1"
destination="$2"
fifo="$(mktemp)"
 
if [ "x$source" = "x" ] || [ "x$destination" = "x" ]; then
    echo "Read vob file from DVD using VLC." >&2
    echo "Usage: $0  " >&2
    echo "Example:" >&2
    echo "    Store first title from device '/dev/dvd' to 'filename.vob':">&2
    echo "    $0 dvdsimple:///dev/dvd@1 filename.vob" >&2
    exit 1
fi
 
if [ -e "$destination" ]; then
    echo "File '$destination' already exists. Please remove first." >&2
    exit
fi
 
# Command from http://www.gentoo-wiki.info/HOWTO_Backup_a_DVD.
# Other commands that should work (untested):
#    CMD="mplayer dvd://$TITLE -dvd-device $DEVICE -dumpstream -dumpfile '$fifo'"
#    CMD="mplayer dvdnav://$TITLE -nocache -dvd-device $DEVICE -dumpstream -dumpfile '$fifo'"
CMD="cvlc '$source' --sout '#standard{access=file,mux=ps,dst=$fifo}' vlc://quit"
 
echo "Creating FIFO file '$fifo'..."
rm "$fifo" && mkfifo "$fifo" || exit 1
 
echo "Starting VLC: $CMD"
eval $CMD & 
vlcpid="$!"
 
# Wait a second or so to let VLC do it's work
sleep 5
 
pv -petrb "$fifo" > "$destination" &
pvpid="$!"
 
wait "$vlcpid"
kill "$pvpid"
rm "$fifo"