159 lines
3.7 KiB
Bash
159 lines
3.7 KiB
Bash
#!/bin/bash
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#decrease cpu usage
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cpu_limit=20 # CPU limit, adjust as needed
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# Set the priority of the current script
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renice "$cpu_limit" "$$"
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# How much light change must be seen by the sensor before it will act
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LightChange=10
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# How often it checks the sensor
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SensorDelay=1
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# Scale sensor to display brightness range
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SensorToDisplayScale=24
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# This should match your refresh rate otherwise it will either change the backlight more times than needed or too few for a smooth animation
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LevelSteps=60
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# The is should match the LevelSteps but in the actual time each event should take to see
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AnimationDelay=0.016
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# Read the variable names
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MaxScreenBrightness=937
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MinimumBrightness=1
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# 2 : Default | 1 : Add Offset | 0 : Subtract Offset, Recommended not to change
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op=2
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# Function to smoothly increase brightness
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smoothly_increase_brightness() {
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current_brightness=$(cat /sys/class/backlight/intel_backlight/brightness)
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target_brightness=1
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steps=60 # You can adjust the number of steps for smoother transition
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animation_delay=0.016
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diff_count=$((($target_brightness - $current_brightness) / $steps))
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for ((i = 1; i <= $steps; i++)); do
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new_brightness=$((current_brightness + i * diff_count))
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brightnessctl -q s $new_brightness
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sleep $animation_delay
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done
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# Set the final brightness value
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brightnessctl -q s $target_brightness
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}
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while getopts i:d: flag; do
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case "${flag}" in
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i) op=1
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num=${OPTARG};;
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d) op=0
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num=${OPTARG};;
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esac
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done
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if [[ -f /tmp/AB.offset ]]; then
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OffSet=$(cat /tmp/AB.offset)
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else
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OffSet=0
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echo $OffSet > /tmp/AB.offset
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chmod 666 /tmp/AB.offset
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fi
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OffSet=$((OffSet < 0 ? 0 : OffSet))
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if [[ $op -lt 2 ]]; then
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if [[ $op -eq 1 ]]; then
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OffSet=$((OffSet + num))
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else
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OffSet=$((OffSet - num))
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fi
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OffSet=$((OffSet < 0 ? 0 : OffSet))
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echo $OffSet > /tmp/AB.offset
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chmod 666 /tmp/AB.offset
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exit
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fi
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touch '/tmp/AB.running'
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OldLight=$(cat /sys/bus/iio/devices/iio:device5/in_illuminance_raw)
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until [ -f /tmp/AB.kill ]; do
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if [[ -f /tmp/AB.stop ]]; then
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rm '/tmp/AB.stop'
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rm '/tmp/AB.running'
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until [[ -f /tmp/AB.start ]]; do
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sleep 10
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done
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rm '/tmp/AB.start'
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touch '/tmp/AB.running'
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else
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if [[ -f /tmp/AB.offset ]]; then
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OffSet=$(cat /tmp/AB.offset)
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else
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OffSet=0
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echo $OffSet > /tmp/AB.offset
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chmod 666 /tmp/AB.offset
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fi
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Light=$(cat /sys/bus/iio/devices/iio:device5/in_illuminance_raw)
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Light=$((Light + OffSet))
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if [[ $Light -lt $LightChange ]]; then
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MaxOld=$((OldLight + LightChange))
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MinOld=$((OldLight - LightChange))
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else
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MaxOld=$((OldLight + OldLight/LightChange))
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MinOld=$((OldLight - OldLight/LightChange))
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fi
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if [[ $Light -gt $MaxOld ]] || [[ $Light -lt $MinOld ]]; then
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CurrentBrightness=$(cat /sys/class/backlight/intel_backlight/brightness)
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Light=$(( $Light + $MinimumBrightness ))
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TempLight=$(($Light * $SensorToDisplayScale))
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if [[ $TempLight -gt $MaxScreenBrightness ]]; then
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NewLight=$MaxScreenBrightness
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else
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NewLight=$TempLight
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fi
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DiffCount=$(( ($NewLight - $CurrentBrightness)/$LevelSteps ))
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for i in $(eval echo {1..$LevelSteps}); do
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NewLight=$(( $DiffCount ))
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if [[ $NewLight -lt 0 ]]; then
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NewLight=$( echo "$NewLight" | awk -F "-" {'print$2'})
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NewLight=$(echo $NewLight-)
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else
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NewLight=$(echo +$NewLight)
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fi
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brightnessctl -q s $NewLight
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sleep $AnimationDelay
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done
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OldLight=$Light
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fi
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if [[ $Light -lt 1 ]]; then
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smoothly_increase_brightness
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fi
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sleep $SensorDelay
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fi
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done
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rm '/tmp/AB.running'
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rm '/tmp/AB.kill'
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