public LRLE(Bitmap image)
{
magic = 0x454C524C;
version = 0x32303056;
int imageWidth = image.Width;
int imageHeight = image.Height;
width = (ushort)imageWidth;
height = (ushort)imageHeight;
List <Command>[] commandLists = new List <Command> [9];
EncodingState currentState = EncodingState.StartNew;
uint runLength = 0;
List <byte[]> colorArray = new List <byte[]>();
byte[] lastPixel = new byte[4];
ColorTable colors = new ColorTable();
List <byte[]> runColors = new List <byte[]>();
for (int m = 0; m < 9; m++)
{
byte[] mipPixels = GetMipBytes(image);
commandLists[m] = new List <Command>();
Array.Copy(mipPixels, 0, lastPixel, 0, 4);
currentState = EncodingState.StartNew;
int x = 0, y = 0;
int w1 = image.Width * 4;
for (int i = 0; i < mipPixels.Length; i += 64)
{
for (int j = 0; j < 4; j++)
{
for (int k = 0; k < 16; k += 4)
{
byte[] tmp = new byte[4];
Array.Copy(mipPixels, (y * w1) + x + k, tmp, 0, 4);
switch (currentState)
{
case EncodingState.StartNew:
currentState = EncodingState.Unknown;
runLength = 1;
colorArray = new List <byte[]>();
colorArray.Add(tmp);
break;
case EncodingState.Unknown:
if (tmp.SequenceEqual(lastPixel))
{
currentState = EncodingState.RepeatRun;
}
else
{
currentState = EncodingState.ColorRun;
}
colorArray.Add(tmp);
Array.Copy(tmp, 0, lastPixel, 0, 4);
runLength++;
break;
case EncodingState.ColorRun:
if (!tmp.SequenceEqual(lastPixel))
{
runLength++;
}
else
{
colorArray.RemoveAt(colorArray.Count - 1);
runLength--;
commandLists[m].Add(new Command(currentState, runLength, colorArray));
foreach (var item in colorArray)
{
colors.AddColor(item);
}
runLength = 2;
colorArray = new List <byte[]>();
currentState = EncodingState.RepeatRun;
}
Array.Copy(tmp, 0, lastPixel, 0, 4);
colorArray.Add(tmp);
break;
case EncodingState.RepeatRun:
if (tmp.SequenceEqual(lastPixel))
{
runLength++;
Array.Copy(tmp, 0, lastPixel, 0, 4);
}
else
{
commandLists[m].Add(new Command(currentState, runLength, colorArray));
foreach (var item in colorArray)
{
runColors.Add(item);
}
Array.Copy(tmp, 0, lastPixel, 0, 4);
runLength = 1;
colorArray = new List <byte[]>();
colorArray.Add(tmp);
currentState = EncodingState.Unknown;
}
break;
default:
break;
}
}
y++;
}
x += 16;
if (x >= w1)
{
x = 0;
}
else
{
y -= 4;
}
}
commandLists[m].Add(new Command(currentState, runLength, colorArray));
foreach (var item in colorArray)
{
colors.AddColor(item);
}
mipPixels = null;
imageWidth /= 2;
imageHeight /= 2;
if (m < 1)
{
Bitmap mip = new Bitmap(imageWidth, imageHeight);
using (Graphics g = Graphics.FromImage(mip))
{
g.SmoothingMode = SmoothingMode.Default;
g.InterpolationMode = InterpolationMode.High;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
g.CompositingQuality = CompositingQuality.HighQuality;
g.DrawImage(image, new Rectangle(0, 0, imageWidth, imageHeight));
}
image = mip;
}
else if (m < 3)
{
image = new Bitmap(image, imageWidth, imageHeight);
}
else
{
Bitmap mip = new Bitmap(imageWidth, imageHeight);
using (Graphics g = Graphics.FromImage(mip))
{
g.SmoothingMode = SmoothingMode.Default;
g.InterpolationMode = InterpolationMode.NearestNeighbor;
g.PixelOffsetMode = PixelOffsetMode.HighSpeed;
g.CompositingQuality = CompositingQuality.HighSpeed;
g.DrawImage(image, new Rectangle(0, 0, imageWidth, imageHeight));
}
image = mip;
}
}
colors.SortColors();
foreach (var item in runColors)
{
if (!colors.HasColor(item))
{
colors.AddColor(item);
}
}
List <byte[]> tmpPixels = new List <byte[]>();
foreach (var item in colors.colors.OrderBy(x => x.Value.Index).Where(x => x.Value.Index < 0x10000).Select(x => x.Key))
{
tmpPixels.Add(item.color);
}
pixelArray = tmpPixels.ToArray();
mips = new byte[9][];
for (int i = 0; i < 9; i++)
{
List <byte> tmpCommands = new List <byte>();
foreach (var item in commandLists[i])
{
tmpCommands.AddRange(item.ToOps(colors).ToArray());
}
mips[i] = tmpCommands.ToArray();
}
}
