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#!/bin/bash
renice -n 19 $$
ionice -c 3 -p $$
XDG_VIDEOS_DIR="${XDG_VIDEOS_DIR:-$HOME/Videos}"
XDG_CACHE_HOME="${XDG_CACHE_HOME:-$HOME/.cache}"
XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
WALLPAPERS="$XDG_VIDEOS_DIR/wallpapers/"
# swwwarg="--transition-type random --transition-duration 0.85 --transition-fps 160 --transition-bezier 1,0.33,0.3,1"
# colors
RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'
DELAY=1800
while true; do
# (while ! swww query; do swww-daemon; done) &
current_bg="$(cat $XDG_CACHE_HOME/current.bg)"
if ! [ "$current_bg" ]; then
echo -e "${RED}current.bg not set, regenerating it${NC}"
current_bg="$(find "$WALLPAPERS" | shuf -n 1)"
echo "$current_bg" > $XDG_CACHE_HOME/current.bg
echo -e "${GREEN}Regenerating wallpappath${NC}"
fi
wallpappath=$(find "$WALLPAPERS" | shuf -n 1)
if [ ! -f "$XDG_CACHE_HOME/$(basename "$current_bg").png" ]; then ffmpeg -hwaccel cuda -i "$current_bg" -y "$XDG_CACHE_HOME/$(basename $current_bg).png" > /dev/null || echo -e "${RED}Generation of static background image failed${NC}"; fi
# wallust run --skip-sequences $current_bg
# wallust run --backend kmeans --skip-sequences $current_bg & # using cache now
# swww img "$XDG_CACHE_HOME/$(basename "$current_bg").png" $swwwarg
# for output in $(hyprctl monitors | grep "Monitor" | awk '{print $2}'); do
# mpvpaper --auto-pause --mpv-options="hwdec=auto --no-audio --loop" --fork "$output" "$current_bg"
OLD_MPVPAPER_PIDS=$(pgrep mpvpaper)
( while ! ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "/tmp/wall.mp4" > /dev/null 2>&1; do ffmpeg -hwaccel cuda -i "$wallpappath" -filter_complex "[0]trim=end=1,setpts=PTS-STARTPTS[begin];[0]trim=start=1,setpts=PTS-STARTPTS[end];[end][begin]xfade=fade:duration=0.5:offset=8.5" -c:v libx264 -profile:v main -pix_fmt yuv420p -y /tmp/wall.mp4 > /dev/null; done )
mpvpaper --auto-pause --mpv-options="hwdec=auto --no-audio --loop --mute" --fork "*" "/tmp/wall.mp4"
# Wait a brief moment to ensure new instance is running
sleep 0.1
# Kill old instances if they exist
if [ -n "$OLD_MPVPAPER_PIDS" ]; then
for pid in $OLD_MPVPAPER_PIDS; do
if [[ $pid != $$ ]]; then
( kill $pid 2>/dev/null & sleep 2 && kill -9 $pid 2>/dev/null ) &
fi
done
fi
# done
wallust run --backend full --skip-sequences "$XDG_CACHE_HOME/$(basename "$current_bg").png"
# tell hypr* where is bg
echo "\$bg = $XDG_CACHE_HOME/$(basename "$current_bg").png" > "$XDG_CONFIG_HOME/hypr/bg.conf"
# reload hyprland
hyprctl reload config-only &
swaync-client --reload-css & # & pywalfox update
gdbus call --session --dest com.mitchellh.ghostty --object-path /com/mitchellh/ghostty --method org.gtk.Actions.Activate reload-config [] [] &
# update hyprlock
killall -USR2 hyprlock &
# next wallpaper
# ffmpeg -hwaccel cuda -i "$current_bg" -y "$XDG_CACHE_HOME/bg.png"
current_bg=$(cat "$XDG_CACHE_HOME/current.bg")
echo "$wallpappath" > "$XDG_CACHE_HOME/current.bg"
# generates cache for next wallpaper
( ffmpeg -hwaccel cuda -i "$wallpappath" -y "$XDG_CACHE_HOME/$(basename $wallpappath).png"; nice -n 20 wallust run --backend full --skip-templates --skip-sequences "$XDG_CACHE_HOME/$(basename $wallpappath).png" > /dev/null ) &
# sleep 10 to ensure mpvpaper already get the wall
( sleep 3; rm -f /tmp/wall.mp4 && while ! ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "/tmp/wall.mp4" > /dev/null 2>&1; do ffmpeg -hwaccel cuda -i "$wallpappath" -filter_complex "[0]trim=end=1,setpts=PTS-STARTPTS[begin];[0]trim=start=1,setpts=PTS-STARTPTS[end];[end][begin]xfade=fade:duration=0.5:offset=8.5" -c:v libx264 -profile:v main -pix_fmt yuv420p /tmp/wall.mp4; done ) &
nice -n 20 sleep $DELAY
done
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