# NightLight

**Repository Path**: feiser/NightLight

## Basic Information

- **Project Name**: NightLight
- **Description**: An app to filter blue light and automate it.
- **Primary Language**: Android
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2017-10-13
- **Last Updated**: 2020-12-20

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Night Light
Night light uses KCAL to adjust blue light intensity of the display colors, so that viewing the screen at dark becomes pleasant for the eyes, and help you fall asleep faster (this is what science have proven so...). 

### What is KCAL?
KCAL is a display driver tuning feature for Qualcomm devices, written by `savoca`. Although this feature is most likely not shipped in the stock kernels of various custom ROMs, it should be available in the custom kernels for your device, provided that your device runs on any 64-bit Qualcomm processor.

### Why on earth did I make it?
I flashed a LineageOS oreo build on my device, but there was no night light feature available on the ROM. The build itself was early so there was no LiveDisplay, and the Android Oreo night light feature was not their as it is Pixel specific. Luckily, the kernel shipped with the build had KCAL, so I decided to harness this feature. But I had to everytime use a kernel manager app, and had to adjust the intensity, hence I decided to make an app that would make this easier for me.

### Features
* Easy one touch toggles, with a single slider to tweak blue light intensity.
* Quick Setting tile for easy toggling on/off night light anywhere.
* Automatic switching on/off night light at user specifed timings. (Limitation - Start time must be lesser in value than ending time, that is if you choose starting time at 2300 hrs and ending time at 0600 hrs (next day) it won't work for now).

### Requirements
* Kernel supporting KCAL.
* Root access.

###### (Coming soon in Play Store and XDA Labs)