Less CPU, replacement image, better log

kunst

@@ -4,41 +4,58 @@ COVER=/tmp/kunst.jpg
 MUSIC_DIR=~/Music/
 CURRENT=$(mpc current -f %file%)
 
+read -d '' MUSIC_NOTE << EOF
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
+EOF
 
 update_cover() {
 	# extract the album art from the mp3 file and dont show the messsy
 	# output of ffmpeg
 	ffmpeg -i "$MUSIC_DIR$(mpc current -f %file%)" $COVER -y &> /dev/null
-
-    echo "Extracted album art"
+	
+	STATUS=$?
+	
+	if [ $STATUS -eq 0 ];then
+		echo "kunst: extracted album art"
+		ARTLESS=false
+	else
+	    echo "error: file does not have an album art"
+		ARTLESS=true
+		return
+	fi
 
 	# resize the image to 250x250
 	convert $COVER -resize 250x250 $COVER 
 
-	echo "Resized album art to 250x250"
+	echo "kunst: resized album art to 250x250"
 }
 
 
-
 main() {
 	update_cover
-	echo "Swapped art to $(mpc current)"
 
-	#mpv --keep-open=yes --cursor-autohide=always --no-osd-bar --no-osc --title="cover" --force-window=immediate --geometry 250x250 $COVER &
+	if [ $ARTLESS == true ];then
+	    COVER=/tmp/kunst.png
+		echo $MUSIC_NOTE | base64 --decode > $COVER
+	fi
+	
+	echo "kunst: swapped album art to $(mpc current)"
+
 	sxiv -g 250x250 -b $COVER &
 
 
 	while true; do
-		NEW=$(mpc current -f %file%)
-		if [ "$NEW" != "$CURRENT" ];then
-			CURRENT=$NEW
-			echo "Song changed. Swapping album art"
+	    mpc idle &> /dev/null
+		echo "kunst: received event from mpd"
 
-			update_cover
+		update_cover
 
-	#		mpv --keep-open=yes --no-osd-bar --no-osc --title="cover" --force-window --geometry 250x250 $COVER &
-			echo "Swapped art to $(mpc current)"
+		if [ $ARTLESS == true ];then
+			COVER=/tmp/kunst.png
+			echo $MUSIC_NOTE | base64 --decode > $COVER
 		fi
+
+		echo "kunst: swapped album art to $(mpc current)"
 	done
 }