ripmydvd

#!/usr/bin/env bash
#cito M:755 O:0 G:0 T:/usr/local/bin/ripmydvd
#------------------------------------------------------------------------------
# Project Name      - ShellProjects/source/ripmydvd
# Started On        - Fri 29 Sep 21:19:47 BST 2017
# Last Change       - Mon 19 Jun 23:34:57 BST 2023
# Author E-Mail     - terminalforlife@yahoo.com
# Author GitHub     - https://github.com/terminalforlife
#------------------------------------------------------------------------------
# Shell program using FFMPEG and MPlayer to rip your DVD.
#------------------------------------------------------------------------------

CurVer='2022-01-30'
Progrm='ripmydvd'

Usage() {
	while read; do
		printf "%s\n" "$REPLY"
	done <<-EOF
		Usage: $Progrm [OPTS] {-t|--title N[-N]} TARGET

		  -h, --help               - Displays this help information.
		  -v, --version            - Output only the version datestamp.
		  --aid X                  - Where X is the audio channel.
		  --alang X                - Where X is the audio language; en or eng?
		  --asid X                 - Where X is the audio substream ID.
		  --endcmd CMD             - Execute CMD command when ripping is done.
		  --startcmd CMD           - Execute CMD command before ripping begins.
		  -C, --combine            - Wrong language? This option should work.
		  -d, --device X           - Use device X instead of '/dev/sr0'.
		  -e, --eject              - Eject the device's tray upon completion.
		  -t, --title N[-N]        - Where N is the title number on the DVD.

		  You may wish to use lsdvd to help you, especially with audio.

		  The '-C' option requires '--aid' or '--alang'. This will rip the
		  audio and video separately, then they will be combined into TARGET.
	EOF
}

Err() {
	printf 'Err: %s\n' "$2" 1>&2
	(( $1 > 0 )) && exit $1
}

while [[ -n $1 ]]; do
	case $1 in
		--help|-h|-\?)
			Usage; exit 0 ;;
		--version|-v)
			printf '%s\n' "$CurVer"; exit 0 ;;
		--device|-d)
			shift

			[[ -b $1 ]] || Err 1 "Device not found at: $1"
			Device=$1 ;;
		--combine|-C)
			Combine='True' ;;
		--title|-t)
			shift

			if [[ $1 =~ ^([0-9]+|[0-9]+-[0-9]+)$ ]]; then
				Title=$1
			else
				Err 1 'Invalid title.'
			fi ;;
		--aid)
			shift

			AID="-aid $1" ;;
		--asid)
			shift

			ASID="-asid $1" ;;
		--alang)
			shift

			ALang="-alang $1" ;;
		--eject|-e)
			Eject='True' ;;
		--startcmd)
			shift

			StartCmd=$1 ;;
		--endcmd)
			shift

			EndCmd=$1 ;;
		*)
			break ;;
	esac

	shift
done

Target="$*"

for CurDep in eject mkfifo ffmpeg mplayer; {
	if ! type -P "$CurDep" &> /dev/null; then
		Err 0 "Dependency '$CurDep' not met."
		(( DepCount++ ))
	fi
}

(( DepCount == 0 )) || exit 1

[[ -n $Target ]] || Err 1 'You need to provide a filename.'
[[ -n $Title ]] || Err 1 'Missing TARGET title to rip.'
[[ -n $Device ]] || Device='/dev/sr0'

FIFO="/tmp/stream_${$}.dump"
MPlayerArgs1="$AID $ASID $ALang -nosub -really-quiet -nolirc -nocache -vo x11"
MPlayerArgs2="-zoom -dumpstream -dumpfile "$FIFO" dvd://$Title/$Device"

[[ -n $StartCmd ]] && ($StartCmd)

if mkfifo "$FIFO"; then
	if [[ $Combine == True ]]; then
		if [[ -z $ALang && -z $AID ]]; then
			Err 1 "Option '--combine' requires '--alang' or '--aid'."
		fi

		mplayer $MPlayerArgs1 -dumpaudio -dumpfile "/tmp/audio.dump"\
			dvd://$Title/$Device &> /dev/null

		mplayer $MPlayerArgs1 -dumpvideo -dumpfile "$FIFO"\
			dvd://$Title/$Device &> /dev/null & disown

		ffmpeg -loglevel fatal -stats -i /tmp/audio.dump -i "$FIFO" "$Target"
	else
		mplayer $MPlayerArgs1 $MPlayerArgs2 &> /dev/null & disown
		ffmpeg -loglevel fatal -stats -i "$FIFO" "$Target"
	fi

	[[ -n $EndCmd ]] && ($EndCmd)

	if [[ $Eject == True ]]; then
		eject $Device
	fi
else
	Err 'Failed to create FIFO.'
fi