public static byte[] GetIconBytes(Bitmap bitmap)
{
List <byte> result = new List <byte>();
// Get palette
ushort[] colors_short = new ushort[16];
Color[] colors = new Color[16];
if (bitmap.PixelFormat != PixelFormat.Format4bppIndexed)
{
//Console.WriteLine("Icon is {0}, converting to {1} (loss of quality possible)", bitmap.PixelFormat.ToString(), PixelFormat.Format4bppIndexed.ToString());
var quantizer = new PnnQuant.PnnQuantizer();
bitmap = quantizer.QuantizeImage(bitmap, PixelFormat.Format4bppIndexed, 16, true);
}
for (int u = 0; u < 16; u++)
{
colors[u] = bitmap.Palette.Entries[u];
int a = colors[u].A / 16;
int r = colors[u].R / 16;
int g = colors[u].G / 16;
int b = colors[u].B / 16;
colors_short[u] = (ushort)(a << 12 | r << 8 | g << 4 | b);
//Console.WriteLine("Color to binary {0} ({1}) : {2} comp A:{3} R:{4} G:{5} B:{6}", u, colors[u].ToString(), colors_short[u].ToString("X"), a.ToString("X"),r.ToString("X"), g.ToString("X"), b.ToString("X"));
result.AddRange(BitConverter.GetBytes(colors_short[u]));
//Console.WriteLine("Color {0}:{1}", u, colors[u].ToString());
}
// Get colors
byte[] image = new byte[1024];
for (int y = 0; y < 32; y++)
{
for (int x = 0; x < 32; x++)
{
for (byte c = 0; c < 16; c++)
{
if (bitmap.GetPixel(x, y) == colors[c])
{
image[y * 32 + x] = c;
break;
}
}
}
}
byte[] squeeze = new byte[512];
for (int u = 0; u < 1024; u++)
{
if (u % 2 == 0)
{
squeeze[u / 2] = (byte)(image[u] << 4 | image[u + 1] & 0xF);
//Console.WriteLine("Byte {0}: {1} / {2}", image[u], image[u] << 4, image[u + 1] & 0xF);
}
}
result.AddRange(squeeze);
return(result.ToArray());
}
private void buttonLoadIcon_Click(object sender, EventArgs e)
{
using (OpenFileDialog od = new OpenFileDialog()
{
DefaultExt = "bmp", Filter = "Bitmap Files|*.bmp;*.png;*.jpg;*.gif|All Files|*.*"
})
if (od.ShowDialog(this) == DialogResult.OK)
{
Bitmap bitmap = new Bitmap(od.FileName);
if (bitmap.PixelFormat != PixelFormat.Format4bppIndexed)
{
var quantizer = new PnnQuant.PnnQuantizer();
bitmap = quantizer.QuantizeImage(bitmap, PixelFormat.Format4bppIndexed, 16, true);
}
meta.Icon = bitmap;
pictureBoxDLCicon.Image = ScalePreview(meta.Icon, pictureBoxDLCicon, checkBoxZoom.Checked);
}
}