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Gamma improvements

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Serge
2024-02-17 13:45:01 +01:00
parent 744b304d4b
commit 062301555c
2 changed files with 23 additions and 12 deletions
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24
app/Display/DisplayGammaRamp.cs
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@@ -1,13 +1,9 @@
using System.Diagnostics;
using System.Reflection.Metadata.Ecma335;
using System.Runtime.InteropServices;
namespace GHelper.Display
namespace GHelper.Display
{
public class DisplayGammaRamp
{
public DisplayGammaRamp(ushort[] red, ushort[] green, ushort[] blue)
{
if (red?.Length != GammaRamp.DataPoints)
@@ -67,20 +63,30 @@ namespace GHelper.Display
public ushort[] Red { get; }
private static ushort[] CalculateLUT(double brightness, double contrast, double gamma)
{
brightness = 0.5 + brightness / 2;
var result = new ushort[GammaRamp.DataPoints];
for (var i = 0; i < result.Length; i++)
{
result[i] = (ushort)((0.5 + brightness / 2) * ushort.MaxValue * i / (float)(result.Length - 1));
result[i] = (ushort)(brightness * ushort.MaxValue * i / (float)(result.Length - 1));
}
return result;
}
public bool IsOriginal()
{
int MaxRed = Red[Red.Length - 1];
int MaxGreen = Green[Green.Length - 1];
int MaxBlue = Blue[Blue.Length - 1];
return (Math.Abs((MaxRed + MaxGreen + MaxBlue) / 3 - ushort.MaxValue) < 256);
}
private static ushort[] Brightness(ushort[] data, double brightness)
{
brightness = 0.5 + brightness / 2;
var result = new ushort[GammaRamp.DataPoints];
for (var i = 0; i < result.Length; i++)
{
result[i] = (ushort)(data[i]*brightness);
result[i] = (ushort)(data[i] * brightness);
}
return result;
}