#!/bin/bash
#dvdplayer script using mplayer
if [ ! -e "$HOME/.mplayer/fifo" ]; then
mkfifo $HOME/.mplayer/fifo
fi
rm -f $HOME/.mplayer/tmp
PROTOCOL='dvdnav://' #Maybe add a switch to choose between dvd:// and dvdnav://
if [ "$1" ]; then
DVD_DEVICE=`echo "$1" | sed "s/\'//g"` #drag an iso file or VIDEO_TS folder to the terminal
else
DVD_DEVICE=$(cat /etc/mtab | grep udf | awk '{print $1}') #will find external drive
#Mac OS X:
#DVD_DEVICE=$(echo '/dev/r'`disktool -l | grep udf | cut -d \' -f 2`)
fi
#in the following command, slave mode is not necessary but useful for testing
(mplayer $PROTOCOL -dvd-device $DVD_DEVICE -nocache -msglevel identify=9 -fs -slave -mouse-movements -input file=$HOME/.mplayer/fifo >> $HOME/.mplayer/tmp) &
#Even the highest msglevel will not give a DVD serial number in dvdnav:// mode. The libdvdnav messages will appear in the Terminal but that's not much help.
sleep 3
#The dvdnav developers seem to confuse titles with titlesets. If I understand correctly, the *titleset* N is the set of VTS_N_[0-9].{BUP,IFO,VOB} files in the VIDEO_TS folder, while the *titles* are coded in the .IFO files. The dvdnav message "switching to title N" actually refers to titleset N. So the following is actually dicey :(
case $PROTOCOL in	#make a function of this and call it again with trap EXIT
dvdnav://)
TITLE=$(cat $HOME/.mplayer/tmp | grep 'DVDNAV, ' | tail -n1 | awk '{print $5}' | sed "s/\r//g")
;;
dvd://)
TITLE=$(cat $HOME/.mplayer/tmp | grep ID_DVD_CURRENT_TITLE | tail -n1 | cut -d \= -f2)
;;
esac
#creating custom variables for later use in scripts (More will follow, like CHAPTER, AUDIO_TRACK, SUBTITLE_TRACK, RESUME_BOOKMARK, DEFAULT_BOOKMARK, SETTINGS_FILE etc. For now saved here, later in separate files)
echo TITLE="$TITLE" >> $HOME/.mplayer/tmp 
#touch $HOME/.mplayer/`disc_id $DVD_DEVICE` will create the settings file. Maybe create two files, one with permanent settings like default bookmark, named bookmarks and any other stuff that's settable, and another with the resume bookmark (`disc_id $DVD_DEVICE`.tmp which can be overwritten).
echo DVD_DEVICE="$DVD_DEVICE" >> $HOME/.mplayer/tmp

#!/bin/bash
TITLE=`cat $HOME/.mplayer/tmp | grep 'TITLE=' | tail -n1 | cut -d = -f 2`
case $1 in
-h|--help)
cat << EOF
"st" stands for "switch title".
It is intended for use with the dvdplayer script.

Usage:
st +n will switch n titles forward
st -n will switch n titles back
st n will switch to title n
st will do nothing
st <garbage> should also do nothing (I hope) :-)
Call this script with ALT+F2 while mplayer is running.

To add a keyboard shortcut, put something like this in input.conf:
N {dvdnav} run "/path/to/st +1" # Next title
P {dvdnav} run "/path/to/st -1" # Previous title

Unfortunately, the switch_title command will only work in dvdnav mode,
which breaks audio playback on many DVDs
EOF
exit
;;
+[0-9]*)
SWITCH=$(echo "$1" |sed 's/+//g')
NEWTITLE=$(expr ${TITLE} + ${SWITCH})
;;
-[0-9]*)
SWITCH=$(echo "$1" |sed 's/-//g')
NEWTITLE=$(expr ${TITLE} - ${SWITCH})
;;
[0-9]*)
NEWTITLE="$1"
;;
*)
exit
;;
esac

if [ "$1" ]; then
echo "switch_title ${NEWTITLE}" > $HOME/.mplayer/fifo
echo TITLE="${NEWTITLE}" >> $HOME/.mplayer/tmp
fi

#!/bin/bash
echo 'get_property chapter' > $HOME/.mplayer/fifo
#echo 'get_property path' > $HOME/.mplayer/fifo
#echo 'get_property stream_pos' > $HOME/.mplayer/fifo
sleep 3
echo 'quit' > $HOME/.mplayer/fifo

CHAPTER=`cat $HOME/.mplayer/tmp | grep ANS_chapter | tail -n1 | cut -d \= -f 2` #create a function!
#echo $CHAPTER
INPUT=`cat $HOME/.mplayer/tmp | grep 'DVD_DEVICE=' | tail -n1 | cut -d \= -f 2`
#echo $INPUT
TITLE=`cat $HOME/.mplayer/tmp | grep 'TITLE=' | tail -n1 | cut -d \= -f 2`
#echo $TITLE

mplayer -loop 0 -dvd-device ${INPUT} dvdnav://${TITLE} -chapter $(expr ${CHAPTER} + 1)-$(expr ${CHAPTER} + 1) -fs #this would have to be implemented in the dvdplayer script (except for the loop). Title and chapter would be taken from the `disc_id $DVD_DEVICE`.tmp file

#!/bin/bash -x
# dvdplayer script using mplayer

# Initializing:
if [ ! -e "$HOME/.mplayer/fifo" ]; then
mkfifo $HOME/.mplayer/fifo
fi
rm -f $HOME/.mplayer/tmp
PROTOCOL='dvdnav://' #maybe add a switch

if [ "$1" ]; then
# Drag an iso file or VIDEO_TS folder to the terminal (takes only one
# argument; the $* is for handling filenames with spaces):
DVD_DEVICE="$(echo "$*" | sed "s/^'\|'$//g")"
# BTW Has nobody ever noticed that the stupid mandatory quoting that
# all GNU/Linux terminal applications impose on us makes life really hard
# for us? The only terminal application with the correct behaviour (using
# NO quotes, escaping spaces with backslashes if necessary) is the Mac OS X
# Terminal.app which is proprietary.
else
#will find external drive if present:
DVD_DEVICE="$(cat /etc/mtab | grep udf | awk '{print $1}')"
fi

# in the following, disc_id is a program from libdvdread-0.9.7
# compiled as an executable (./configure --disable-shared --disable-static =>
# make => do not install, copy files manually to /usr/local/bin).
# Sadly mplayer does not output enough information even at the highest 
# message level, so we have to get the information we need this way

# Where the bookmarks go:
BMDIR="$HOME/.mplayer/bookmarks"
if [ ! -d $BMDIR ]; then
mkdir -p $BMDIR
fi

# VIDEO_TS folders have a disc id (at least when created with dvdauthor),
# so $(disc_id "${DVD_DEVICE}") should not be empty (Remember, this is a DVD
# player only). The disc id may or may not be the same as the disc id of the
# iso file created from it. This has nothing to do with filesystem UUID.
# Inventing extensions for the bookmark and resume files.
# Later we might invent corresponding mimetypes:
touch ${BMDIR}/$(disc_id "${DVD_DEVICE}").mpbmk
BOOKMARKFILE="${BMDIR}/$(disc_id "${DVD_DEVICE}")".mpbmk
touch ${BMDIR}/$(disc_id "${DVD_DEVICE}").resume
RESUMEFILE="${BMDIR}/$(disc_id "${DVD_DEVICE}")".resume

# Functions:
set_var () {
echo "$1"="$2" >> $HOME/.mplayer/tmp
}

# mplayer commands (slave mode is not necessary but useful for testing).
# The ampersand may be necessary for some scripts:
(mplayer $PROTOCOL -dvd-device "$DVD_DEVICE" -nocache -slave -quiet -fs -mouse-movements -input file=$HOME/.mplayer/fifo >> $HOME/.mplayer/tmp) & 

sleep 1

# The dvdnav developers seem to confuse titles with titlesets. If I understand
# correctly, the *titleset* N is the set of VTS_N_[0-9].{BUP,IFO,VOB} files in
# the VIDEO_TS folder, while the *titles* are coded in the .IFO files.
# The dvdnav message "switching to title N" actually refers to titleset N.
# So the following is actually dicey :(
case $PROTOCOL in
dvdnav://)
TITLE=$(cat $HOME/.mplayer/tmp | grep "DVDNAV, " | tail -n 1 | sed 's/[^[:digit:]]//g')
;;
dvd://)
TITLE=$(cat $HOME/.mplayer/tmp | grep ID_DVD_CURRENT_TITLE | tail -n 1 | cut -d = -f 2)
;;
esac

# Creating custom variables (exporting them won't work):
set_var TITLE $TITLE #only this will change during playback
set_var DVD_DEVICE $DVD_DEVICE
set_var BOOKMARKFILE $BOOKMARKFILE
set_var RESUMEFILE $RESUMEFILE
set_var PROTOCOL $PROTOCOL

#!/bin/bash -x
# Bookmark script for use with the dvdplayer script.

# Functions:
get_resume () {
for i in "$@"; do
eval "$i"=`cat $RESUMEFILE | grep "$i" | cut -d = -f 2`
done
}

set_resume () {
for j in "$@"; do
eval echo "$j"=\$"$j" >> "$RESUMEFILE"
done
}

get_var () {
for k in "$@"; do
eval "$k"=`cat $HOME/.mplayer/tmp | grep "$k" | tail -n 1 | cut -d = -f 2`
done
}

set_var () {
eval echo "$1"=\$"$1" >> ${HOME}/.mplayer/tmp
}

set_bookmark () {
echo "$1"="$2" >> "$BOOKMARKFILE"
}

mp_command () {
echo "$*" > $HOME/.mplayer/fifo
}

#TERMINAL=$COLORTERM

case $1 in
-h|--help)
cat << EOF
"`basename $0`" is a bookmarking and resuming script for mplayer. It is intended for use with the dvdplayer script. Call it with Alt+F2 while mplayer (started with the dvdplayer script) is running or assign a shortcut to it.

Usage:
`basename $0` without arguments will create a resume bookmark and close mplayer. The previous resume bookmark will be overwritten.

`basename $0` -l will open a terminal window and list your bookmarks in a select menu; choose one by number.

`basename $0` -c will open a terminal window and prompt for the name of a new bookmark to be created at the current position. If the name is "Start", it will be used as default startup bookmark. An existing bookmark with the chosen name will be overwritten.

`basename $0` -d will open a terminal window and list your bookmarks in a select menu; choose one to delete. Can also be done by opening $BOOKMARKFILE in an editor, of course.

`basename $0` -r will start playback from the resume bookmark, if present.

EOF
exit
;;
-l|--list)
#TODO
;;
-c|--create)
#TODO
;;
-d|--delete)
#TODO
;;
-r|--resume)
get_var PROTOCOL DVD_DEVICE RESUMEFILE && \
get_resume TITLE ANS_time_pos && \
#restarting mplayer is ***REALLY*** idiotic
mp_command quit && \
(mplayer $PROTOCOL$TITLE -dvd-device "${DVD_DEVICE}" -nocache -slave -quiet --hr-seek=always -fs -mouse-movements -input file=$HOME/.mplayer/fifo &) && \
sleep 1 && \
(mp_command seek $ANS_time_pos 2)
;;
*)
(mp_command get_property time_pos) && \
sleep 1 && \
get_var TITLE ANS_time_pos RESUMEFILE && \
sleep 1 && \
rm -f $RESUMEFILE && \
set_resume TITLE ANS_time_pos && \

#TODO: save audio and subtitle track as well

mp_command quit
;;
esac

#!/bin/bash
echo "$*" > $HOME/.mplayer/fifo