private void FormSenderMain_Shown(object sender, EventArgs e)
{
const int LOGPIXELSX = 88;
const int LOGPIXELSY = 90;
var dc = GetWindowDC(IntPtr.Zero);
var dpiX = GetDeviceCaps(dc, LOGPIXELSX);
var dpiY = GetDeviceCaps(dc, LOGPIXELSY);
ReleaseDC(IntPtr.Zero, dc);
_sw = new System.Diagnostics.Stopwatch();
//_udp = new UDPSender();
_tcp = new TCPSender();
foreach (ImageCodecInfo ici in ImageCodecInfo.GetImageEncoders())
{
if (ici.FormatID == ImageFormat.Jpeg.Guid)
{
_jpgEncoder = ici;
break;
}
}
formCaptureBox.Location = new Point(Location.X + 10, Location.Y + Height);
FrameVisible(true);
formCaptureBox.Width = 320 * dpiX / 96;
formCaptureBox.Height = 240 * dpiY / 96;
timer1.Enabled = true;
}
private void tcpJPGPrepare(Bitmap bmp, TCPSender tcp)
{
using (MemoryStream ms = new MemoryStream())
{
byte[] rgbValues = { 0 };
ms.WriteByte(0x4A); // prefix "JPG" 3Byte
ms.WriteByte(0x50);
ms.WriteByte(0x47);
ms.WriteByte(0); // data len 4Byte
ms.WriteByte(0);
ms.WriteByte(0);
ms.WriteByte(0);
bmp.Save(ms, _jpgEncoder, _encParams);
ms.Capacity = (int)ms.Length;
rgbValues = ms.GetBuffer();
{
UInt32 len = (UInt32)(ms.Length - 7);
rgbValues[3] = (byte)(len & 0xFF);
rgbValues[4] = (byte)((len >> 8) & 0xFF);
rgbValues[5] = (byte)((len >> 16) & 0xFF);
rgbValues[6] = (byte)((len >> 24) & 0xFF);
tcp.setData(rgbValues);
}
}
}
