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added comments to the code

This commit is contained in:
Siddharth Dushantha 2019-02-14 06:21:15 +01:00
parent 8fcaab7cc7
commit c13e2bda71
1 changed files with 20 additions and 4 deletions
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kunst
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@ -2,19 +2,23 @@
COVER=/tmp/kunst.jpg COVER=/tmp/kunst.jpg
MUSIC_DIR=~/Music/ MUSIC_DIR=~/Music/
CURRENT=$(mpc current -f %file%)
# This is a base64 endcoded image which will be used if
# if the file does not have an emmbeded album art
read -d '' MUSIC_NOTE << EOF read -d '' MUSIC_NOTE << EOF
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
EOF EOF
update_cover() { update_cover() {
# extract the album art from the mp3 file and dont show the messsy # extract the album art from the mp3 file and dont show the messsy
# output of ffmpeg # output of ffmpeg
ffmpeg -i "$MUSIC_DIR$(mpc current -f %file%)" $COVER -y &> /dev/null ffmpeg -i "$MUSIC_DIR$(mpc current -f %file%)" $COVER -y &> /dev/null
# get the status of the previous command
STATUS=$? STATUS=$?
# check if the file has a embbeded album art
if [ $STATUS -eq 0 ];then if [ $STATUS -eq 0 ];then
echo "kunst: extracted album art" echo "kunst: extracted album art"
ARTLESS=false ARTLESS=false
@ -35,23 +39,35 @@ main() {
update_cover update_cover
if [ $ARTLESS == true ];then if [ $ARTLESS == true ];then
# change the path to COVER because the music note
# image is a png not jpg
COVER=/tmp/kunst.png COVER=/tmp/kunst.png
# decode the base64 encoded image and save it
# to /tmp/kunst.png
echo $MUSIC_NOTE | base64 --decode > $COVER echo $MUSIC_NOTE | base64 --decode > $COVER
fi fi
echo "kunst: swapped album art to $(mpc current)" echo "kunst: swapped album art to $(mpc current)"
# display the album art using sxiv
sxiv -g 250x250 -b $COVER & sxiv -g 250x250 -b $COVER &
while true; do while true; do
# waiting for an event from mpd; play/pause/next/previous
# this is lets kunst use less CPU :)
mpc idle &> /dev/null mpc idle &> /dev/null
echo "kunst: received event from mpd" echo "kunst: received event from mpd"
update_cover update_cover
if [ $ARTLESS == true ];then if [ $ARTLESS == true ];then
# change the path to COVER because the music note
# image is a png not jpg
COVER=/tmp/kunst.png COVER=/tmp/kunst.png
# decode the base64 encoded image and save it
# to /tmp/kunst.png
echo $MUSIC_NOTE | base64 --decode > $COVER echo $MUSIC_NOTE | base64 --decode > $COVER
fi fi