public static byte[] CreatePacket_StartSizeStopCompressSum(byte[] data)
{
if (data.IsNullOrEmpty())
{
return(null);
}
byte[] data_compressed = data.GZip();
byte compression = 0;
if (data_compressed.Length < data.Length - 1)
{
compression = 1;
data = data_compressed;
}
byte[] length = Int32Ex.ToBytes(data.Length);
Int32 checksum = data.ChecksumInt32();
byte[] check = Int32Ex.ToBytes(checksum);
List <byte> result = new List <byte>();
#region packet
result.Add(TcpAsyncCommon.StartByte);
result.Add(compression);
result.AddRange(length);
result.AddRange(check);
result.AddRange(data);
result.Add(TcpAsyncCommon.EndByte);
#endregion
return(result.ToArray());
}
/*public static int ToIndex2D(int x, int y, int width, int height)
* {
* if (x < 0 || y < 0 || width <= 0 || height <= 0 || x >= width || y >= height)
* return -1;
*
* return x + (width * y);
* }
*
* public static Point FromIndex2D(int index, int width, int height)
* {
* if (index < 0 || width <= 0 || height <= 0 || index >= (width * height))
* return new Point(-1, -1);
*
*
* int y = index / width;
* int x = index + (width * y);
*
*
* return new Point(x, y);
* }*/
/// <summary>
/// maximum allowed matrix dimentions are 32767x32767
/// </summary>
/// <param name="bitmaps"></param>
/// <returns></returns>
public static byte[] ToByteArray_16(this Bitmap[,] bitmaps, ImageFormat format = null)
{
if (bitmaps.IsNullOrEmpty())
{
return(null);
}
int xParts = bitmaps.Width();
int yParts = bitmaps.Height();
if (!xParts.InClosedInterval(1, Int16.MaxValue))
{
return(null);
}
if (!yParts.InClosedInterval(1, Int16.MaxValue))
{
return(null);
}
List <byte> result = new List <byte>();
result.AddRange(Int16Ex.ToBytes((Int16)xParts));
result.AddRange(Int16Ex.ToBytes((Int16)yParts));
Int16 x = 0, y;
byte[] dd;
for (; x < xParts; x++)
{
for (y = 0; y < yParts; y++)
{
dd = bitmaps[x, y].ToByteArray(format);
if (dd.IsNullOrEmpty())
{
continue;
}
result.AddRange(Int16Ex.ToBytes(x));
result.AddRange(Int16Ex.ToBytes(y));
result.AddRange(Int32Ex.ToBytes(dd.Length));
result.AddRange(dd);
}
}
if (result.IsCountLessOrEqual(24))
{
return(null);
}
return(result.ToArray());
}
