From e8daf94cdae484eea559213e4f9084f40aaa2507 Mon Sep 17 00:00:00 2001
From: steel99xl <steel99xl@gmail.com>
Date: Sat, 10 Feb 2024 11:47:06 -0500
Subject: [PATCH] Now with the notes from the debug versoin
---
AutomaticBrightness.sh | 48 +++++++++++++++++++++++++++++-------------
1 file changed, 33 insertions(+), 15 deletions(-)
diff --git a/AutomaticBrightness.sh b/AutomaticBrightness.sh
index c811c35..5056a71 100755
--- a/AutomaticBrightness.sh
+++ b/AutomaticBrightness.sh
@@ -24,6 +24,9 @@ MinimumBrightness=001
# 2 : Default | 1 : Add Offset | 0 : Subtract Offset, Recomended not to change
op=2
+
+# Only look for flags -i or -d with an aditional value
+# AutomaticBrightness.sh -i 100
while getopts i:d: flag
do
case "${flag}" in
@@ -34,6 +37,7 @@ do
esac
done
+# Verigy offset file exsits and if so read it
if [[ -f /dev/shm/AB.offset ]]
then
OffSet=$(cat /dev/shm/AB.offset)
@@ -43,10 +47,10 @@ else
$(chmod 666 /dev/shm/AB.offset)
fi
-
+#if no offset or its less than 0 make 0
OffSet=$((OffSet < 0 ? 0 : OffSet))
-
+# relativly change number in Offset file and write it
if [[ $op -lt 2 ]]
then
if [[ $op -eq 1 ]]
@@ -56,6 +60,7 @@ then
OffSet=$((OffSet - num))
fi
+ # verify offset is not less than 0
OffSet=$((OffSet < 0 ? 0 : OffSet))
$(echo $OffSet > /dev/shm/AB.offset)
@@ -72,14 +77,17 @@ renice "$priority" "$$"
sleep 5
+# Get screen max brightness value
MaxScreenBrightness=$(find -L /sys/class/backlight -maxdepth 2 -name "max_brightness" 2>/dev/null | grep "max_brightness" | xargs cat)
+# Set path to current screen brightness value
BLightPath=$(find -L /sys/class/backlight -maxdepth 2 -name "brightness" 2>/dev/null | grep "brightness")
+# Set path to current luminance sensor
LSensorPath=$(find -L /sys/bus/iio/devices -maxdepth 2 -name "in_illuminance_raw" 2>/dev/null | grep "in_illuminance_raw")
-
+#Set the current light value so we have something to compare to
OldLight=$(cat $LSensorPath)
while true
@@ -94,16 +102,14 @@ do
fi
Light=$(cat $LSensorPath)
+ ## apply offset to current light value
Light=$((Light + OffSet))
- if [[ $Light -lt $LightChange ]]
- then
- MaxOld=$((OldLight + LightChange))
- MinOld=$((OldLight - LightChange))
- else
- MaxOld=$((OldLight + OldLight/LightChange))
- MinOld=$((OldLight - OldLight/LightChange))
- fi
+ # Set allowed range for light
+
+ MaxOld=$((OldLight + OldLight/LightChange))
+ MinOld=$((OldLight - OldLight/LightChange))
+
if [[ $Light -gt $MaxOld ]] || [[ $Light -lt $MinOld ]]
then
@@ -111,13 +117,17 @@ do
CurrentBrightness=$(cat $BLightPath)
-
+ # Add MinimumBrighness here to not effect comparison but the outcome
Light=$(( $Light + $MinimumBrightness ))
-
+
+ # Gernate a TempLight value for the screen to be set to
+ # Float math thanks Matthias_Wachter
TempLight=$(echo "scale=2; $Light * $SensorToDisplayScale" | bc)
# REmoves float for latter checks
TempLight=$(LANG=C printf "%.0f" $TempLight)
+
+ # Check we dont ask the screen to go brighter than it can
if [[ $TempLight -gt $MaxScreenBrightness ]]
then
NewLight=$MaxScreenBrightness
@@ -125,13 +135,18 @@ do
NewLight=$TempLight
fi
+ # How diffrent should each stop be
DiffCount=$(( ( $NewLight - $CurrentBrightness ) / $LevelSteps ))
+ # Step once per Screen Hz to make animation
for i in $(eval echo {1..$LevelSteps} )
do
+ # Set new relative light value
NewLight=$(( $DiffCount ))
+
+ # Format values apropriatly for brightnessctl
if [[ $NewLight -lt 0 ]]
then
NewLight=$( echo "$NewLight" | awk -F "-" {'print$2'})
@@ -139,12 +154,15 @@ do
else
NewLight=$(echo +$NewLight)
fi
-
+
+ # Adjust brightness relativly
brightnessctl -q s $NewLight
+ # Sleep for the screen Hz time so he effect is visible
sleep $AnimationDelay
done
-
+
+ # Store new light as old light for next comparison
OldLight=$Light
fi