From af1c8e4503bf0c557fd352cfcb07727da9ebb785 Mon Sep 17 00:00:00 2001
From: Markus Birth <mbirth@gmail.com>
Date: Fri, 20 Apr 2018 21:30:52 +0200
Subject: [PATCH] Fix mp3gain on Ubuntu 18.04.

---
 mp3loud_track.sh  | 4 ++--
 mp3loud_tracks.sh | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/mp3loud_track.sh b/mp3loud_track.sh
index 690b00d..43ae65f 100755
--- a/mp3loud_track.sh
+++ b/mp3loud_track.sh
@@ -5,7 +5,7 @@
 TARGET_LOUDNESS=-14
 
 # Normalise MP3 to 89 dB, add tags to file
-mp3gain -q -k -p -r -s i "$1" > /dev/null
+LD_PRELOAD= mp3gain -q -k -p -r -s i "$1" > /dev/null
 
 # Find actual EBU R128 loudness, show relative to $TARGET_LOUDNESS LUFS
 LOUDADJUST=`bs1770gain --norm $TARGET_LOUDNESS --xml "$1" | grep -m 1 integrated | sed -e 's/^.*lu="\(.*\)".*$/\1/'`
@@ -21,7 +21,7 @@ GAINADJUST=`printf %0.f $GAINADJUST`
 if [ "$GAINADJUST" -ne 0 ]; then
     echo "[$1] Adjust gain by: $GAINADJUST"
     # Use this call to have clipping-prevention which doesn't work when modifying gain directly
-    mp3gain -q -k -p -r -s i -m $GAINADJUST "$1"
+    LD_PRELOAD= mp3gain -q -k -p -r -s i -m $GAINADJUST "$1"
 else
     echo "[$1] No further adjustment necessary."
 fi
diff --git a/mp3loud_tracks.sh b/mp3loud_tracks.sh
index 772377f..159cde3 100755
--- a/mp3loud_tracks.sh
+++ b/mp3loud_tracks.sh
@@ -8,7 +8,9 @@ if [ -z "$CONCURRENCY_LEVEL" ]; then
     CONCURRENCY_LEVEL=1
 fi
 
+CONCURRENCY_LEVEL=1
+
 echo "Processing using $CONCURRENCY_LEVEL processes..."
-nice -n2 find "$@" -print0 | xargs -0 -P $CONCURRENCY_LEVEL -n 1 -I {} /opt/mbirth/mp3loud_track.sh "{}"
+nice -n2 find "$@" -print0 | xargs -0 -P $CONCURRENCY_LEVEL -n 1 -I {} nice -n10 /opt/mbirth/mp3loud_track.sh "{}"
 
 echo "All done."