public void Process()
{
for (int i = _from; i < _to; i++)
{
var maxInLine = _data.GetMaxInLine(i);
for (int j = 0; j < _data.GetWidth(); j++)
{
var offset = ((i * _data.GetWidth()) + j) * _depth;
int pixelColor = _currentState.Process(_data.Data[i][j], maxInLine);
_buffer[offset + 0] = _buffer[offset + 1] = _buffer[offset + 2] = (byte)pixelColor;
}
}
}
public Bitmap CreateImage(int threadNumber, State currentState)
{
_bitmap = new Bitmap(_data.GetWidth(), _data.GetHeight(), System.Drawing.Imaging.PixelFormat.Format24bppRgb);
var bitmapData = _bitmap.LockBits(new Rectangle(0, 0, _data.GetWidth(), _data.GetHeight()), System.Drawing.Imaging.ImageLockMode.ReadWrite, _bitmap.PixelFormat);
var depth = Bitmap.GetPixelFormatSize(bitmapData.PixelFormat) / 8;
var buffer = new byte[_data.GetWidth() * _data.GetHeight() * depth];
List <Thread> threads = new List <Thread>(threadNumber);
for (int i = 0; i <= threadNumber - 1; i++)
{
int from = (_data.GetHeight() / threadNumber) * i;
int to = (_data.GetHeight() / threadNumber) * (i + 1);
ImagePart imagePart;
if (i == threadNumber - 1)
{
imagePart = new ImagePart(_data, from, _data.GetHeight(), buffer, depth, currentState);
imagePart.Process();
}
else
{
imagePart = new ImagePart(_data, from, to, buffer, depth, currentState);
Thread thread = new Thread(new ThreadStart(imagePart.Process));
thread.Start();
threads.Add(thread);
}
}
foreach (var thread in threads)
{
thread.Join();
}
Marshal.Copy(buffer, 0, bitmapData.Scan0, buffer.Length);
_bitmap.UnlockBits(bitmapData);
return(_bitmap);
}