Dışarıdan bir kütüphaneye ihtiyaç olmayabilir.
Windows işletim sisteminin kütüphanelerine ihtiyaç var. (user32.dll, avicap32.dll, GDI32.dll)
Bu sınıfı kullanabilirsiniz...
class Camera
{
#region api
static int WS_CHILD = 0x40000000;
int WS_VISIBLE = 0x10000000;
//short SWP_NOMOVE = 0x2;
//short SWP_NOZORDER = 0x4;
static short WM_USER = 0x400;
int WM_CAP_DRIVER_CONNECT = WM_USER + 10;
int WM_CAP_DRIVER_DISCONNECT = WM_USER + 11;
int WM_CAP_SET_VIDEOFORMAT = WM_USER + 45;
int WM_CAP_SET_PREVIEW = WM_USER + 50;
int WM_CAP_SET_PREVIEWRATE = WM_USER + 52;
//long WM_CAP_GET_FRAME = 1084;
//long WM_CAP_COPY = 1054;
static long WM_CAP_START = WM_USER;
long WM_CAP_STOP = (WM_CAP_START + 68);
long WM_CAP_SEQUENCE = (WM_CAP_START + 62);
long WM_CAP_SET_SEQUENCE_SETUP = (WM_CAP_START + 64);
long WM_CAP_FILE_SET_CAPTURE_FILEA = (WM_CAP_START + 20);
[DllImport("user32.dll")]
private static extern int SendMessage(int hwnd, int wMsg, short wParam, string lParam);
[DllImport("avicap32.dll")]
private static extern int capCreateCaptureWindowA(string lpszWindowName, int dwStyle, int x, int y, int nWidth, short nHeight, int hWndParent, int nID);
[DllImport("avicap32.dll")]
private static extern bool capGetDriverDescriptionA(short wDriver, string lpszName, int cbName, string lpszVer, int cbVer);
[DllImport("GDI32.dll")]
private static extern bool BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, UInt32 dwRop);
#endregion
#region properties
private string iDevice;
private int hHwnd;
private int lwndC;
public bool iRunning;
private int CamFrameRate = 15;
private int OutputHeight = 240;
private int OutputWidth = 360;
public int FPS
{
get
{
return 1000 / CamFrameRate;
}
}
#endregion
#region functions
public Camera()
{
}
public void resetCam()
{
if (iRunning)
{
closeCam();
if (!setCam())
MessageBox.Show("Kamera ayarlarında bir hata oluştu.");
}
}
public void initCam(int parentH)
{
if (iRunning)
MessageBox.Show("Kamera zaten çalışıyor.");
else hHwnd = capCreateCaptureWindowA(iDevice, (WS_VISIBLE | WS_CHILD), 0, 0, OutputWidth, (short)OutputHeight, parentH, 0);
if (!setCam())
MessageBox.Show("Kamera hata verdi.");
}
public void setFrameRate(long iRate)
{
CamFrameRate = (int)(1000 / iRate);
resetCam();
}
private bool setCam()
{
if (SendMessage(hHwnd, WM_CAP_DRIVER_CONNECT, 0, 0.ToString()) == 1)
{
SendMessage(hHwnd, WM_CAP_SET_PREVIEWRATE, (short)CamFrameRate, 0.ToString());
SendMessage(hHwnd, WM_CAP_SET_PREVIEW, 1, 0.ToString());
iRunning = true;
return true;
}
else
{
iRunning = false;
return false;
}
}
public bool closeCam()
{
if (iRunning)
{
iRunning = false;
return SendMessage(hHwnd, WM_CAP_DRIVER_DISCONNECT, 0, 0.ToString()) == 0;
}
else return true;
}
public Bitmap copyFrame(PictureBox src, RectangleF rect)
{
if (iRunning)
{
Graphics srcPic = src.CreateGraphics();
Bitmap srcBmp = new Bitmap(src.Width, src.Height, srcPic);
Graphics srcMem = Graphics.FromImage(srcBmp);
IntPtr HDC1 = srcPic.GetHdc();
IntPtr HDC2 = srcMem.GetHdc();
BitBlt(HDC2, 0, 0, (int)rect.Width, (int)rect.Height, HDC1, (int)rect.X, (int)rect.Y, 13369376);
srcPic.ReleaseHdc(HDC1);
srcMem.ReleaseHdc(HDC2);
srcPic.Dispose();
srcMem.Dispose();
return (Bitmap)(srcBmp.Clone());
}
else
{
MessageBox.Show("Kamera çalışmıyor!");
return null;
}
}
#endregion
}
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