waydabber

struct MacParams {
  var type: String
  var isArm: Bool
  var hasBuiltIn: Bool
  var builtInSizeInch: Float
  var pixelsWide: Int
  var pixelsHigh: Int
  var hiDPI: Bool
  var clamshell: Bool

waydabber

-- ddcavcontrol

-- v1.2.1

-- This Hammerspoon script is intended to do the following:
-- 1) Control External Display Brightness via DDC (utilizing a proper brightness+contrast curve)
-- 2) Control External Display Volume via DDC
-- 3) Control Digital AV Volume via Network (currently works with Yamaha AVs)
-- 4) Use the standard brightness and volume keys of an Apple keyboards
-- 5) Display the standard MacOS OSD as expected

waydabber

@import Darwin;
@import Foundation;
@import IOKit;

/*******

This should change the brightness level of a single external display connected to an M1 MBP or MBA relative to the current setting using DDC/CI. Reportedly does not work on M1 Mini.
Credits to @tao-j and @alin23

Compile: