distribution/packages/jelos/sources/scripts/brightness
fewtarius 9ae3455f45
* Fix more brightness bugs
* Update kernel - Adds additional RG353V device property changes.
* Always sync portmaster, thememaster, and jelosaddons after updating.
* Add workaround for no audio mixing of right channel on RG353V thanks to @christianhaitian.
2022-10-01 20:22:43 -04:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020-present Fewtarius
BRIGHTNESS_DEV="$(ls /sys/class/backlight | head -n 1)"
MIN=1
MAX=$(cat /sys/class/backlight/${BRIGHTNESS_DEV}/max_brightness)
if [ "${MAX}" = 255 ]
then
STEP=17
else
STEP=6
fi
if [[ -n "$2" ]]; then
STEP=$2
fi
# Ensure set_setting exists in all contexts
if ! type set_setting &>/dev/null
then
source /etc/profile
fi
if [ ! -f /sys/class/backlight/${BRIGHTNESS_DEV}/brightness ]
then
echo "ERROR: There is no BRIGHTNESS object to manage."
exit 1
fi
stepUp() {
getBrightness
MYBRIGHTNESS=$?
NEWBRIGHTNESS=$((${MYBRIGHTNESS}+${STEP}))
if (( ${NEWBRIGHTNESS} > ${MAX} ))
then
NEWBRIGHTNESS=${MAX}
fi
echo "${NEWBRIGHTNESS}" > /sys/class/backlight/${BRIGHTNESS_DEV}/brightness
set_setting system.brightness ${NEWBRIGHTNESS}
}
stepDown() {
getBrightness
MYBRIGHTNESS=$?
NEWBRIGHTNESS=$((${MYBRIGHTNESS}-${STEP}))
if (( ${NEWBRIGHTNESS} < ${MIN} ))
then
NEWBRIGHTNESS=${MIN}
fi
echo "${NEWBRIGHTNESS}" > /sys/class/backlight/${BRIGHTNESS_DEV}/brightness
set_setting system.brightness ${NEWBRIGHTNESS}
}
getBrightness() {
local BRIGHTNESS=$(cat /sys/class/backlight/${BRIGHTNESS_DEV}/brightness)
return ${BRIGHTNESS}
}
case ${1} in
"up")
stepUp ${BRIGHTNESS}
;;
"down")
stepDown ${BRIGHTNESS}
;;
"device")
echo ${BRIGHTNESS_DEV}
;;
*)
getBrightness
echo $?
;;
esac