adding any2opus

1 files changed, 101 insertions, 0 deletions

diff --git a/dotfiles/system/.local/bin/any2opus b/dotfiles/system/.local/bin/any2opus
new file mode 100755
index 0000000..3fa4563
--- /dev/null
+++ b/dotfiles/system/.local/bin/any2opus
@@ -0,0 +1,101 @@
+#!/bin/env bash
+# Craig Jennings <c@cjennings.net>
+# convenience utility to convert all media files not in opus format in current directory to opus.
+# flags for recursive or specific filename supported.
+
+# Default values of arguments
+delete_after_conversion=false
+filename=""
+recursive=false
+
+# Usage info
+show_help() {
+	cat << EOF
+Usage: ${0##*/} [-h] [-d] [-r] [-f FILE]
+Convert audio/video files to the Opus format.
+
+    -h          display this help and exit
+    -d          delete source files after conversion
+    -r          convert files recursively in current and subdirectories
+    -f FILE     convert a specific file.
+
+Note: The '-f' and '-r' options are mutually exclusive.
+      If no file is given, works on all non-opus media files in the current directory.
+      Requires the ffmpeg installation.
+EOF
+}
+
+# Check for the existence of ffmpeg
+if ! command -v ffmpeg &> /dev/null; then
+    echo "Cannot proceed: ffmpeg not found on path."
+    exit 1
+fi
+
+# Identify arguments; quit if invalid argument
+while getopts ":df:rh" opt; do
+	case ${opt} in
+		d)
+			delete_after_conversion=true
+			;;
+		f)
+			filename=$OPTARG
+			;;
+		r)
+			recursive=true
+			;;
+		h)
+			show_help
+			exit 0
+			;;
+		\?)
+			echo "Invalid option: -$OPTARG" >&2
+			show_help
+			exit 1
+			;;
+    esac
+done
+
+# Display error and quit if incompatible arguments
+if [ "$recursive" = true ] && [ -n "$filename" ]
+then
+	echo "The -f and -r options cannot be used together."
+	show_help
+	exit 1
+
+# Convert function checks mime-type and converts/deletes a single file
+convert() {
+	f=$1
+	# Check the mime-type of the file
+	mime_type=$(file -b --mime-type "$f")
+	# If the file is an audio or video file and not already in opus format then convert it to opus
+	if [[ $mime_type == video/* || $mime_type == audio/* ]] && [[ $f != *.opus ]]; then
+		ffmpeg -i "$f" "${f%.*}.opus"
+		# If the '-d' option was specified, delete the original file after conversion
+		if $delete_after_conversion; then
+			rm "$f"
+		fi
+	fi
+}
+
+# Use above convert function based on user's intended set of files
+if [ "$recursive" = true ]
+then
+	# convert all media files in current and child directories
+	find . -type f -exec bash -c 'convert "$0"' {} \;
+elif [[ -n $filename ]]
+then
+	# if filename is not empty, convert only this file
+	convert $filename
+else
+	# Convert all
+	echo "All non-opus media files in the current directory will be converted. Originals are kept."
+	read -p "Proceed? (Y/n) " -n 1 -r
+	echo
+	if [[ $REPLY =~ ^[Yy]$ ]]
+	then
+		# Iterate over each file in the directory and convert
+		for f in *; do
+			convert $f
+		done
+	fi
+fi