remaptib.cs

// Tiberium green -> blue remapper.

using System.Drawing;
using System.IO;
using System.Drawing.Imaging;
using System;
using System.Collections.Generic;

namespace remaptib
{
	class Program
	{
		static void Main(string[] args)
		{
			foreach (var f in Directory.GetFiles(args[0], "*.png"))
			{
				using (var b = (Bitmap)Bitmap.FromFile(f))
				{

					var bits = b.LockBits(new Rectangle(0, 0, b.Width, b.Height), ImageLockMode.ReadWrite, PixelFormat.Format8bppIndexed);

					unsafe
					{
						byte* p = (byte*)bits.Scan0;
						for (var j = 0; j < bits.Height; j++)
						{
							for (var i = 0; i < bits.Width; i++)
								*p++ = RemapColor(*p);

							p += bits.Stride - bits.Width;
						}
					}

					b.UnlockBits(bits);

					b.Save(@"d:\crap\output\" + Path.GetFileName(f));
				}
			}
		}

		static byte RemapColor(byte b)
		{
			switch (b)
			{
				case 0xa5: return 0x09;
				case 0xa6: return 0x0a;
				case 0xa7: return 0x0b;
				case 0x9e: return 0x09;
				case 0x9d: return 0x09;
				case 0x9f: return 0x0b;
				case 0x9c: return 0x09;
				case 0xb9: return 0x87;
				case 0xb3: return 0x77;
				case 0x05: return 0x09;
				default:
					return b;
			}
		}
	}
}