aaccheck

#!/bin/sh

# for debugging
# set -x

prog=`basename $0`

# do not be verbose in output
verbose=0

# do not debug by default
debug=0

# don't be quiet by default
quiet=0

# extensions to check for
extlist=(avi mkv mp4 m4v flv)

#
# had to read http://wiki.bash-hackers.org/howto/getopts_tutorial to figure out "getopts"!
#
while getopts dfhqv opt; do
	case $opt in
		v) verbose=1 ;;
		d) debug=1 ;;
		q) quiet=1; verbose=1 ;;
		h)	echo "Usage: $prog # checks all files ending in: ${extlist[@]}"
			echo "       $prog foo.mkv bar.mkv # only check specified files"
			echo "       $prog -q # don't show state of every file; (implies -v)"
			echo "       $prog -v # spits a list of files missing aac to stdout"
			echo "                # in addition to the usual commented info"
			exit 0
			;;
	esac
done
#
# remove flags from the paramater list
shift $((OPTIND-1))

found=1
if [ $# = 0 ]; then
	found=0
	for ext in ${extlist[@]}; do
		set *.$ext
		if [ "x$*" != 'x*.'"$ext" ]; then
			found=1
			break
		fi
	done
fi
if [ $found = 0 ]; then
	echo "${prog}: No files specified and no files found with extension: ${extlist[@]}"
	exit 2
fi	

needs_converting() {
	file="$1"
	if [ ! -r "$file" -o -d "$file" ]; then
		# return 1 for false
		return 1
	fi

	has_ac3=0
	has_aac=0
	if [ $debug = 1 ]; then
		echo "ffmpeg -i $file:"
		ffmpeg -i "$file" 2>&1 | tee /dev/tty | grep 'Audio: ac3' > /dev/null && has_ac3=1
		ffmpeg -i "$file" 2>&1 | tee /dev/tty | grep 'Audio: aac' > /dev/null && has_aac=1
		echo ""
	else
		ffmpeg -i "$file" 2>&1 | grep 'Audio: ac3' > /dev/null && has_ac3=1
		ffmpeg -i "$file" 2>&1 | grep 'Audio: aac' > /dev/null && has_aac=1
	fi
	needs_it=1
	[ $has_ac3 = 1 -a $has_aac = 0 ] && needs_it=0

	# return 0 for true and 1 for false!!!
	return $needs_it
}

conversion_check() {
	file="$1"
	if [ ! -r "$file" -o -d "$file" ]; then
		echo "# ⚠️  $file - not readable" >&2
		return
	fi
	if needs_converting "$file"; then
		if [ $verbose = 0 ]; then
			echo "# ❌  $file"
		else
			[ $quiet == 0 ] && echo "# ❌  $file" >&2
			echo "$file"
		fi
	else
		if [ $verbose = 0 ]; then
			[ $quiet == 0 ] && echo "# ✅  $file"
		else
			[ $quiet == 0 ] && echo "# ✅  $file" >&2
		fi
	fi
}

for i; do
	if [ -d "$i" ]; then
		for j in "$i"/*.mkv; do
			conversion_check "$j"
		done
	else
		conversion_check "$i"
	fi
done