Sound Controller

volume-db

#!/usr/bin/env bash

VALUE_FONT=${font:-$(xrescat i3xrocks.value.font "Source Code Pro Medium 13")}
VALUE_COLOR=$(xrescat i3xrocks.nominal white)
LABEL_COLOR=${label_color:-$(xrescat i3xrocks.label.color "#7B8394")}

read -r DEVICE MIXER <<< "$BLOCK_INSTANCE"

[[ -z "$DEVICE" ]] && DEVICE="default"
[[ -z "$MIXER" ]] && MIXER="Master"

case $BLOCK_BUTTON in
    3) amixer -q -D "$DEVICE" set "$MIXER" toggle ;;
    4) amixer -q -D "$DEVICE" set "$MIXER" 1db+ ;;
    5) amixer -q -D "$DEVICE" set "$MIXER" 1db- ;;
esac

PATTERN='\[[0-9]+%\] (\[(-?[0-9]+)\.([0-9]+)dB\] )?\[(on|off)\]'
if [[ $(amixer -D $DEVICE get $MIXER) =~ $PATTERN ]]; then
    VOL=${BASH_REMATCH[2]}
    VOL_DEC=${BASH_REMATCH[3]}
    STATE=${BASH_REMATCH[4]}
else
    LABEL_ICON="$(echo -e '\uf026')"
    VALUE_COLOR=$(xrescat i3xrocks.warning yellow)
    LABEL_COLOR=$(xrescat i3xrocks.warning yellow)
    printf "<span color=\"%s\">%s</span><span font_desc=\"%s\" color=\"%s\">No Sound</span>\n" \
        "$LABEL_COLOR" "$LABEL_ICON" "$VALUE_FONT" "$VALUE_COLOR"
    exit 0
fi

if [[ $STATE = "off" ]]; then
    LABEL_ICON="$(echo -e '\uf026')"
    VALUE_COLOR=$(xrescat i3xrocks.warning yellow)
    LABEL_COLOR=$(xrescat i3xrocks.warning yellow)
elif [ "$VOL" -le -31 ]; then
    LABEL_ICON="$(echo -e '\uf027')"
else
    LABEL_ICON="$(echo -e '\uf028')"
fi

printf "<span color=\"%s\">%s</span><span font_desc=\"%s\" color=\"%s\"> %d.%02d dB</span>\n" \
   "$LABEL_COLOR" "$LABEL_ICON" "$VALUE_FONT" "$VALUE_COLOR" "$VOL" "$VOL_DEC"