scripts

1 files changed, 128 insertions, 0 deletions

diff --git a/aconv b/aconv
new file mode 100755
index 0000000..bcc739b
--- /dev/null
+++ b/aconv
@@ -0,0 +1,128 @@
+#!/bin/sh
+
+ACONV_OUTDIR="./converted"
+ACONV_CODEC="libopus"
+ACONV_BITRATE="128k"
+ACONV_CONTAINER="ogg"
+ACONV_QUIET=0
+ACONV_THREADS=$(nproc --ignore=2)
+
+chk_command() {
+	if ! command -v "$1" > /dev/null; then
+		>&2 echo "error: command '$1' could not be found"
+		exit 1
+	fi
+}
+
+chk_command "ffmpeg"
+chk_command "getopts"
+chk_command "parallel"
+chk_command "find"
+
+usage() {
+	printf "usage: aconv [-hs] [options] dir\n"
+}
+
+help() {
+	printf "usage: aconv [-hs] [options] dir\n\n"
+	printf "\t-h\t\tprint this message\n"
+	printf "\t-q\t\tset quiet output (only errors)\n"
+	printf "\t-o OUTDIR\tset the output directory\n"
+	printf "\t-c CODEC\tset the output codec\n"
+	printf "\t-C CONTAINER\tset the output container\n"
+	printf "\t-b BITRATE\tset the output bitrate\n"
+	printf "\t-j THREADS\tset the number of threads (default all but 2)\n"
+}
+
+while getopts "hqo:c:C:b:j:" arg > /dev/null; do
+	case $arg in
+		h)
+			help
+			exit 0
+			;;
+		q)
+			ACONV_QUIET=1
+			;;
+		o)
+			ACONV_OUTDIR=${OPTARG}
+			;;
+		c)
+			ACONV_CODEC=${OPTARG}
+			;;
+		C)
+			ACONV_CONTAINER=${OPTARG}
+			;;
+		b)
+			ACONV_BITRATE=${OPTARG}
+			;;
+		j)
+			ACONV_THREADS=${OPTARG}
+			;;
+		?)
+			>&2 echo "error: unknown option"
+			usage
+			exit 1
+			;;
+	esac;
+done;
+
+ACONV_DIR=${@:$OPTIND:1}
+
+if [ "$ACONV_DIR" = "" ]; then
+	usage
+	exit 1
+fi
+
+if [ ! -d "$ACONV_DIR" ]; then
+	>&2 echo "error: input directory '$ACONV_DIR' does not exist"
+	exit 1
+fi
+
+
+convert_file() {
+	# get arguments
+	file="$1"
+	ext="$2"
+	name=${file%.*};
+	# print log
+	if [ "$ACONV_QUIET" -eq 0 ]; then
+		printf "\x1b[34m  CONV  \x1b[0m%s\n" "$ACONV_OUTDIR/$name.$ACONV_CONTAINER"
+	fi
+	# do the thing
+	ffmpeg -nostdin -y -i "$file" -c:a "$ACONV_CODEC" -b:a "$ACONV_BITRATE" "$ACONV_OUTDIR/$name.$ACONV_CONTAINER" -loglevel fatal
+}
+
+export ACONV_OUTDIR
+export ACONV_CODEC
+export ACONV_BITRATE
+export ACONV_CONTAINER
+export ACONV_QUIET
+export ACONV_THREADS
+export -f convert_file
+
+convert_type() {
+	# get arguments
+	dir="$1"
+	ext="$2"
+	# convert the files
+	find "$dir" -type f -name "*.$ext" | parallel -j "$ACONV_THREADS" convert_file "{}" "$ext"
+}
+
+convert_dir() {
+	# get arguments
+	dir="$1"
+
+	# make the output dirs
+	find "$dir" -type d -print0 |xargs -0 -I{} mkdir -p "$ACONV_OUTDIR/{}"
+
+	# convert the things
+	convert_type "$dir" "mp3"
+	convert_type "$dir" "m4a"
+	convert_type "$dir" "ogg"
+	convert_type "$dir" "flac"
+	convert_type "$dir" "wav"
+	convert_type "$dir" "avif"
+}
+
+# do the thing
+convert_dir "$ACONV_DIR"