public static ushort Checksum(this Bitmap bitmap, int x, int y, int w, int h)
{
byte[] bytes;
Bitmap bmp = new Bitmap(w, h);
using (Graphics g = Graphics.FromImage(bmp))
{
bool success = false;
do
{
try
{
g.DrawImage(bitmap, 0, 0, new Rectangle(x, y, w, h), GraphicsUnit.Pixel);
success = true;
}
catch (InvalidOperationException e)
{
System.Threading.Thread.Sleep(10);
}
}while (!success);
}
//ret = icon.Checksum();
bytes = (byte[])(new ImageConverter()).ConvertTo(bmp, typeof(byte[]));
bmp.Dispose();
/*bytes = new byte[w * h * 2];
* for (int r = 0; r < h; r++)
* {
* System.Buffer.BlockCopy(bitmap.Bits, (y + r) * bitmap.Bitmap.Width * 2 + x * 2, bytes, r * w * 2, w * 2);
* }*/
return(CRC16.ComputeChecksum(bytes));
//return CRC16.ComputeChecksum((byte[])(new ImageConverter()).ConvertTo(bmp, typeof(byte[])));
}
public ushort Checksum(int x, int y, int w, int h)
{
Bitmap bmp = SubBitmap(x, y, w, h);
//ret = icon.Checksum();
byte [] bytes = (byte[])(new ImageConverter()).ConvertTo(bmp, typeof(byte[]));
bmp.Dispose();
/*bytes = new byte[w * h * 2];
* for (int r = 0; r < h; r++)
* {
* System.Buffer.BlockCopy(bitmap.Bits, (y + r) * bitmap.Bitmap.Width * 2 + x * 2, bytes, r * w * 2, w * 2);
* }*/
return(CRC16.ComputeChecksum(bytes));
//return CRC16.ComputeChecksum((byte[])(new ImageConverter()).ConvertTo(bmp, typeof(byte[])));
}
public static ushort Checksum(this SuperBitmap bitmap)
{
ushort chksum = 0;
try
{
bool success = false;
do
{
//chksum = Checksum(bitmap, 0, 0, bitmap.Bitmap.Width, bitmap.Bitmap.Height);
chksum = CRC16.ComputeChecksum((byte[])(new ImageConverter()).ConvertTo(bitmap.Bitmap, typeof(byte[])));
success = true;
}while (!success);
}
catch (InvalidOperationException e) { }
return(chksum);
}
public static ushort Checksum(this Bitmap bitmap)
{
byte[] bytes = (byte[])(new ImageConverter()).ConvertTo(bitmap, typeof(byte[]));
return(CRC16.ComputeChecksum(bytes));
}
public static ushort PayloadChecksum(this PacketDotNet.Packet packet)
{
return(CRC16.ComputeChecksum(packet.PayloadData));
}
