From 52c786e85813ab2ff141add8b7d179c2a0e95438 Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Fri, 25 Sep 2026 20:09:46 +0200
Subject: [PATCH] add implement mp3 encode

---
 src/lib/mp3.sh | 103 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 102 insertions(+), 1 deletion(-)

diff --git a/src/lib/mp3.sh b/src/lib/mp3.sh
index b2e195e..05a709a 100644
--- a/src/lib/mp3.sh
+++ b/src/lib/mp3.sh
@@ -25,4 +25,105 @@ mp3_check_programs()
 		|| return $?
 }
 
-mp3_check_programs || return $?
\ No newline at end of file
+mp3_flacmetadata_to_mp3_tag()
+{
+	local flac="$1"
+	local mp3="$2"
+	local path=${flac%/*}
+	local artist=
+	local title=
+	local album=
+	local genre=
+	local genre=
+	local trackno=
+	local date=
+	local rrl=
+	local rtg=
+	local rtp=
+	local rag=
+	local rap=
+
+	# get the tags from flac file
+	title=$(metaflac --show-tag=TITLE "$flac")
+	artist=$(metaflac --show-tag=ARTIST "$flac")
+	album=$(metaflac --show-tag=ALBUM "$flac")
+	date=$(metaflac --show-tag=DATE "$flac")
+	trackno=$(metaflac --show-tag=TRACKNUMBER "$flac")
+	genre=$(metaflac --show-tag=GENRE "$flac")
+
+	rrl=$(metaflac --show-tag=REPLAYGAIN_REFERENCE_LOUDNESS "$flac")
+	rtg=$(metaflac --show-tag=REPLAYGAIN_TRACK_GAIN "$flac")
+	rtp=$(metaflac --show-tag=REPLAYGAIN_TRACK_PEAK "$flac")
+	rag=$(metaflac --show-tag=REPLAYGAIN_ALBUM_GAIN "$flac")
+	rap=$(metaflac --show-tag=REPLAYGAIN_ALBUM_PEAK "$flac")
+
+	artist=${artist/*=/}
+	title=${title/*=/}
+	album=${album/*=/}
+	genre=${genre/*=/}
+	genre=${genre:=12}
+	trackno=${trackno/*=/}
+	trackno=${trackno:=0}
+	date=${date/*=/}
+
+	rrl=${rrl/=/:}
+	rtg=${rtg/=/:}
+	rtp=${rtp/=/:}
+	rag=${rag/=/:}
+	rap=${rap/=/:}
+	# --------------------------------------------------
+
+	# ID3v2.3 tagging with cover and without cover
+	eyeD3 --v2 \
+		--to-v2.3 \
+		--title="$title" \
+		--artist="$artist" \
+		--album="$album" \
+		--recording-date="$date" \
+		--track="$trackno" \
+		--genre="$genre" \
+		--user-text-frame="$rrl" \
+		--user-text-frame="$rtg" \
+		--user-text-frame="$rtp" \
+		--user-text-frame="$rag" \
+		--user-text-frame="$rap" \
+		--add-image="$path/cover.jpg":FRONT_COVER \
+		"$mp3" > /dev/null 2>&1
+}
+
+mp3_encode_flac()
+{
+	local flac="$1"
+	local mp3="${flac/.flac/.mp3}"
+	BITRATE=${BITRATE:-"192"}
+
+	nice --adjustment=10 flac \
+		--totally-silent \
+		--stdout \
+		--decode \
+		"$flac" \
+		| nice --adjustment=15 lame \
+		--silent \
+		-b "$BITRATE" \
+		-t \
+		--noreplaygain \
+		- "$mp3"
+	mp3_flacmetadata_to_mp3_tag "$flac" "$mp3"
+}
+
+mp3_encode()
+{
+	local work_path="$1"
+	find "$work_path" -name '*.flac' \
+		| sort \
+		| parallel \
+		--will-cite \
+		--ungroup \
+		--eta \
+		--progress \
+		mp3_encode_flac {}
+}
+
+mp3_check_programs || return $?
+export -f mp3_encode_flac
+export -f mp3_flacmetadata_to_mp3_tag
\ No newline at end of file
-- 
2.47.3