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#!/usr/bin/env bash
# ==================================================
# KoolDots (2026)
# Project URL: https://github.com/LinuxBeginnings
# License: GNU GPLv3
# SPDX-License-Identifier: GPL-3.0-or-later
# ==================================================
set -euo pipefail
XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
swayIconDir="${XDG_CONFIG_HOME}/swaync/icons"
#// Credits to sl1ng for the orginal script. Rewritten by Vyle.
ctlcheck=("pactl" "jq" "notify-send" "awk" "pgrep" "hyprctl" "iconv")
missing=()
for ctl in "${ctlcheck[@]}"; do
command -v "${ctl}" >/dev/null || missing+=("${ctl}")
done
if (( ${#missing[@]} )) 2>/dev/null; then
if printf '%s\n' "${missing[@]}" | grep -qx "pactl"; then
notify-send -a "t1" -r 91190 -t 2000 -i "${swayIconDir}/volume-low.png" "ERROR: pactl not installed" "Install 'pactl' (pulseaudio-utils or pipewire-pulse)."
fi
echo "Missing required dependencies: \"${missing[*]}\""
exit 1
fi
#// Parse .pid, .class, .title to __pid, __class, __title.
active_json="$(hyprctl -j activewindow 2>/dev/null || { echo -e "Did hyprctl fail to run? [EXIT-CODE:-1]"; exit 1; } )"
PID="$(jq -r '"\(.pid)\t\(.class)\t\(.title)"' <<< "${active_json}" || { echo -e "Did jq fail to run? [EXIT-CODE:-1]"; exit 1; } )"
IFS=$'\t' read -r __pid __class __title <<< "${PID}"
[[ -z "${__pid}" ]] && { echo -e "Could not resolve PID for focused window."; exit 1; }
sink_json="$(pactl -f json list sink-inputs 2>/dev/null | iconv -f utf-8 -t utf-8 -c || { echo -e "Did pactl or iconv fail to run? Required manual intervention."; exit 1; } )"
#// Collect all descendant PIDs for the active window (Chrome/Wayland audio often runs in child processes).
declare -A seen_pids=()
queue=("${__pid}")
all_pids=()
while ((${#queue[@]})); do
pid="${queue[0]}"
queue=("${queue[@]:1}")
[[ -n "${seen_pids[$pid]:-}" ]] && continue
seen_pids["$pid"]=1
all_pids+=("$pid")
mapfile -t children < <(pgrep -P "$pid" || true)
for child in "${children[@]}"; do
[[ -n "${seen_pids[$child]:-}" ]] || queue+=("$child")
done
done
pidsJson="$(printf '%s\n' "${all_pids[@]}" | jq -s 'map(tonumber)')"
#// Check if any descendant PID matches application.process.id or else verify other statements.
mapfile -t sink_ids < <(jq -r --argjson pids "${pidsJson}" --arg class "${__class}" --arg title "${__title}" '
.[] |
def lc(x): (x // "" | ascii_downcase);
def normalize(x): x | gsub("[-_~.]+";" ") ;
select(
(.properties["application.process.id"] | tostring | tonumber? as $p | $p != null and ($pids | index($p)))
or
(lc(.properties["application.name"]) | contains(lc($class)))
or
(lc(.properties["application.id"]) | contains(lc($class)))
or
(lc(.properties["application.process.binary"]) | contains(lc($class)))
or
(normalize(lc(.properties["media.name"])) | contains(normalize(lc($title))))
) | .index' <<< "${sink_json}"
)
if [[ "${#sink_ids[@]}" -eq 0 ]]; then
mapfile -t fallback_pids < <(pgrep -x "${__class}" || true)
if [[ "${#fallback_pids[@]}" -gt 0 ]]; then
declare -A seen_fallback=()
queue=("${fallback_pids[@]}")
all_fallback=()
while ((${#queue[@]})); do
pid="${queue[0]}"
queue=("${queue[@]:1}")
[[ -n "${seen_fallback[$pid]:-}" ]] && continue
seen_fallback["$pid"]=1
all_fallback+=("$pid")
mapfile -t children < <(pgrep -P "$pid" || true)
for child in "${children[@]}"; do
[[ -n "${seen_fallback[$child]:-}" ]] || queue+=("$child")
done
done
fallbackJson="$(printf '%s\n' "${all_fallback[@]}" | jq -s 'map(tonumber)')"
mapfile -t sink_ids < <( jq -r --argjson pids "${fallbackJson}" '.[] |
select((.properties["application.process.id"] | tostring | tonumber? as $p | $p != null and ($pids | index($p)))) | .index' <<< "${sink_json}" )
fi
fi
#// Auto-Detect if the environment is on Hyprland or $HYPRLAND_INSTANCE_SIGNATURE.
if [[ ${#sink_ids[@]} -eq 0 ]]; then
if [[ -n "${HYPRLAND_INSTANCE_SIGNATURE}" ]]; then
# Even if the fallback_pid remains empty, we will dispatch exit code based on $HYPRLAND_INSTANCE_SIGNATURE.
notify-send -a "t1" -r 91190 -t 1200 -i "${swayIconDir}/volume-low.png" "No sink input for the active_window: ${__class}"
echo "No sink input for focused window: ${__class}"
exit 1
else
echo "No sink input for focused active_window ${__class}"
exit 1
fi
fi
idsJson=$(printf '%s\n' "${sink_ids[@]}" | jq -s 'map(tonumber)')
#// Get the available option from pactl.
want_mute=$(jq -r --argjson ids "$idsJson" '
[ .[] | select(.index as $i | $ids | index($i)) | .mute ] as $m |
if all($m[]; . == true) then "no"
else "yes"
end' <<< "${sink_json}"
)
if [[ "${want_mute}" == "no" ]]; then
state_msg="Unmuted"
swayIcon="${swayIconDir}/volume-high.png"
else
state_msg="Muted"
swayIcon="${swayIconDir}/volume-mute.png"
fi
[[ -f "${swayIcon}" ]] || echo -e "Missing swaync icons."
changed=0
failed_ids=()
for id in "${sink_ids[@]}"; do
if pactl set-sink-input-mute "$id" "$want_mute"; then
changed=1
else
failed_ids+=("$id")
fi
done
if [[ "$changed" -eq 0 ]]; then
notify-send -a "t2" -r 91190 -t 1200 -i "${swayIconDir}/volume-low.png" "Failed to change sink input(s)" "${failed_ids[*]:-unknown}"
exit 1
fi
#// Append pamixer to get a nice result. Pamixer is complete optional here.
if command -v pamixer >/dev/null; then
sink_name="$(pamixer --get-default-sink 2>/dev/null | awk -F '"' 'END{print $(NF - 1)}' 2>/dev/null || true)"
if [[ -n "${sink_name}" ]]; then
notify-send -a "t2" -r 91190 -t 800 -i "${swayIcon}" "${state_msg} ${__class}" "${sink_name}"
else
notify-send -a "t2" -r 91190 -t 800 -i "${swayIcon}" "${state_msg} ${__class}"
fi
else
notify-send -a "t2" -r 91190 -t 800 -i "${swayIcon}" "${state_msg} ${__class}"
fi
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