public static void ConvertToYGA(string inputFilename, string outputFilename)
{
using (BinaryWriter writer = new BinaryWriter(new FileStream(outputFilename, FileMode.Create)))
{
Bitmap bitmap = new Bitmap(inputFilename);
YGAHeader header = new YGAHeader();
header.Width = bitmap.Width;
header.Height = bitmap.Height;
header.Mode = 0;
header.UncompressedSize = bitmap.Width * bitmap.Height * 4; //assuming 32bpp (argb) hue
header.CompressedSize = 0;
writer.Write(header.GetBytes());
for (int i = 0; i < bitmap.Height; i++)
{
for (int j = 0; j < bitmap.Width; j++)
{
Color color = bitmap.GetPixel(j, i);
writer.Write(color.B);
writer.Write(color.G);
writer.Write(color.R);
writer.Write(color.A);
}
}
}
}
public Bitmap Decompress()
{
byte[] buffer;
using (BinaryReader reader = new BinaryReader(new FileStream(Filename, FileMode.Open)))
{
buffer = reader.ReadBytes((int)reader.BaseStream.Length - 1);
}
byte[] headerBytes = new byte[24];
Array.Copy(buffer, 0, headerBytes, 0, 24);
YGAHeader header = YGAHeader.GetHeader(headerBytes);
byte[] data = new byte[buffer.Length - 23];
Array.Copy(buffer, 24, data, 0, buffer.Length - 24);
byte[] bitmapBytes;
if (header.Mode == 1)
{
bitmapBytes = YuGiLZSS.Decompress(data, header.UncompressedSize);
}
else
{
bitmapBytes = data;
}
Bitmap bitmap = new Bitmap(header.Width, header.Height);
for (int i = 0; i < header.Height; i++)
{
for (int j = 0; j < header.Width; j++)
{
int index = (i * header.Width * 4) + j * 4;
Color color = Color.FromArgb(bitmapBytes[index + 3], bitmapBytes[index + 2], bitmapBytes[index + 1], bitmapBytes[index]);
bitmap.SetPixel(j, i, color);
}
}
return(bitmap);
}
