public static WebCam GetCamera(int index)
{
if (index < 0 || index > _numdetectedCameras - 1)
{
//MessageBox.Show("Invalid camera index specified", "Webcam Acquisition Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
WebCam camera = new WebCam(default(String), default(String), -1, false);
return(camera);
}
else
{
return(_detectedCameras[index]);
}
}
public static void ReleaseInactiveCameras()
{
int numberCameras = WebcamManager.NumberConnectedCameras();
for (int i = 0; i < numberCameras; i++)
{
WebCam camera = WebcamManager.GetCamera(i);
if (camera.Subscribers.Count == 0)
{
camera.Stop();
DllImport.StopWebCam(camera.WebCamID);
}
}
}
public static void StopCamera(int index)
{
int numberCameras = WebcamManager.NumberConnectedCameras();
if (index > -1 && index < numberCameras)
{
WebCam camera = WebcamManager.GetCamera(index);
for (int i = 0; i < camera.Subscribers.Count; i++)
{
ImageListenerBase l = camera.Subscribers[i];
l.UnregisterForImages(camera);
}
camera.Subscribers.Clear();
camera.Stop();
DllImport.StopWebCam(camera.WebCamID);
}
}
private static void UpdateCameraList()
{
DllImport.RefreshWebcams();
_numdetectedCameras = DllImport.GetNumberOfConnectedWebCams();
_detectedCameras = new List <WebCam>();
_availableFlags = new List <bool>();
for (int i = 0; i < _numdetectedCameras; i++)
{
string cameraName = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(DllImport.GetWebCamName(i));
string cameraPath = System.Runtime.InteropServices.Marshal.PtrToStringAnsi(DllImport.GetWebCamPath(i));
bool isAvailable = DllImport.IsWebCamAvailable(i);
WebCam camera = new WebCam(cameraName, cameraPath, i, isAvailable);
_detectedCameras.Add(camera);
_availableFlags.Add(isAvailable);
}
}
public static bool StartCamera(int index, int CaptureWidth, int CaptureHeight)
{
int numberCameras = WebcamManager.NumberConnectedCameras();
if (index > -1 && index < numberCameras)
{
WebCam camera = WebcamManager.GetCamera(index);
camera.Width = CaptureWidth;
camera.Height = CaptureHeight;
try
{
camera.Start();
}
catch (Exception e)
{
//System.Windows.Forms.MessageBox.Show(e.ToString());
camera.Stop();
return(false);
}
return(true);
}
return(false);
}
