toggle mute of microphone using pulseaudio

mute-unmute.sh

#!/usr/bin/env bash

CARD_IDX="10" # use `pacmd list-sources` to find out which one
STATUS_FILE="$XDG_RUNTIME_DIR/micmute_status" # temp file to store state
INDICATOR_LED="2" # 0: num, 1: caps, 2: scroll lock
LED_WHEN_MUTED="on"
LED_WHEN_UNMUTED="off"

touch "$STATUS_FILE" # make sure it exist

mute() {
        echo muting. # for debug
        pacmd set-source-mute $CARD_IDX 1
        xset -led $INDICATOR_LED led $LED_WHEN_MUTED
        echo 1 > "$STATUS_FILE"
}

unmute() {
        echo unmuting.
        pacmd set-source-mute $CARD_IDX 0
        xset -led $INDICATOR_LED led $LED_WHEN_UNMUTED
        echo 0 > "$STATUS_FILE"
}

toggle() {
        pactl set-source-mute $CARD_IDX toggle
}

is_muted() {
        return $(cat "$STATUS_FILE")
}

if [ "$(cat $STATUS_FILE)" -eq 1 ]
        then
                unmute
        else
                mute
fi