public static List <ICamera> GetDirectShowCameras()
{
var cameras = new List <ICamera>();
object VideoInputObject = null;
IBaseFilter VideoInput = null;
IEnumMoniker classEnum;
var devEnum = (ICreateDevEnum) new CreateDevEnum();
devEnum.CreateClassEnumerator(FilterCategory.VideoInputDevice, out classEnum, 0);
Marshal.ReleaseComObject(devEnum);
if (classEnum != null)
{
var grabbingDevices = true;
var allMonikers = new List <IMoniker>();
while (true)
{
var temp = new IMoniker[1];
classEnum.Next(1, temp, IntPtr.Zero);
if (temp[0] == null)
{
break;
}
allMonikers.Add(temp[0]);
}
var iid = typeof(IBaseFilter).GUID;
var piid = typeof(IPropertyBag).GUID;
var idx = 0;
foreach (var validMoniker in allMonikers)
{
object propertyBagObject = null;
validMoniker.BindToObject(null, null, ref iid, out VideoInputObject);
validMoniker.BindToStorage(null, null, ref piid, out propertyBagObject);
var propertyBag = (IPropertyBag)propertyBagObject;
object descResult = null;
if (propertyBag.Read("Description", out descResult, null) != 0)
{
if (propertyBag.Read("FriendlyName", out descResult, null) != 0)
{
descResult = "(unknown device)";
}
}
var camera = new DirectShowCamera
{
Name = descResult as string,
Index = idx,
Width = 640, // TODO Fix
Height = 480,
};
cameras.Add(camera);
Marshal.ReleaseComObject(VideoInputObject);
Marshal.ReleaseComObject(validMoniker);
Marshal.ReleaseComObject(classEnum);
idx++;
}
}
return(cameras);
}
/// <summary>
/// Initializes a new instance of the <see cref="DirectShowWebcamPropertiesForm"/> class.
/// </summary>
/// <param name="camera">The webcam.</param>
public DirectShowWebcamPropertiesForm(DirectShowCamera camera)
: this()
{
directShowImageQualityPropertiesControl1.Camera = camera;
directShowCameraControlPropertiesControl1.Camera = camera;
this.Text = string.Format("{0} Properties (CustomUI)", camera.FriendlyName);
}
public void SetCamera(int deviceNumber, int deviceMode)
{
GTHardware.Camera.Instance.SetDirectShowCamera(deviceNumber, deviceMode);
GTHardware.Camera.Instance.Device.OnImage += new EventHandler <GTHardware.Cameras.ImageEventArgs>(Device_OnImage);
GTHardware.Camera.Instance.Device.Start();
// Bing camera settings to device (brightness etc.).
// Sliders are bound to CameraSettings, here we bind them to the camera interface
if (GTHardware.Camera.Instance.Device != null && GTHardware.Camera.Instance.DeviceType == GTHardware.Camera.DeviceTypeEnum.DirectShow)
{
DirectShowCamera dShowCam = (DirectShowCamera)GTHardware.Camera.Instance.Device;
Settings.Instance.Camera.OnVideoProcAmpPropertyChanged += dShowCam.OnVideoProcAmpPropertyChanged;
Settings.Instance.Camera.OnCameraControlPropertyChanged += dShowCam.OnCameraControlPropertyChanged;
}
}
private IBaseFilter GetVideoInputObjectForCamera(DirectShowCamera camera)
{
object VideoInputObject = null;
IBaseFilter VideoInput = null;
IEnumMoniker classEnum;
var devEnum = (ICreateDevEnum) new CreateDevEnum();
devEnum.CreateClassEnumerator(FilterCategory.VideoInputDevice, out classEnum, 0);
Marshal.ReleaseComObject(devEnum);
if (classEnum != null)
{
var grabbingDevices = true;
var allMonikers = new List <IMoniker>();
while (true)
{
var temp = new IMoniker[1];
classEnum.Next(1, temp, IntPtr.Zero);
if (temp[0] == null)
{
break;
}
allMonikers.Add(temp[0]);
}
var iid = typeof(IBaseFilter).GUID;
var idx = 0;
foreach (var validMoniker in allMonikers)
{
if (idx == camera.Index)
{
validMoniker.BindToObject(null, null, ref iid, out VideoInputObject);
var result = ((IBaseFilter)VideoInputObject);
Marshal.ReleaseComObject(validMoniker);
Marshal.ReleaseComObject(classEnum);
return(result);
}
Marshal.ReleaseComObject(validMoniker);
idx++;
}
Marshal.ReleaseComObject(classEnum);
}
return(null);
}
public VideoCapture(GraphicsDevice GraphicsDevice, ICamera camera)
{
this.GraphicsDevice = GraphicsDevice;
Camera = (DirectShowCamera)camera;
Initialize();
}
public void SetDirectShowCamera(int newDeviceNumber, int newDeviceMode)
{
try
{
bool initializeNew = true;
DirectShowCamera localCam; // we store new camera here and then transfer it to this.camera on success
// If no device mode was select use default
if (newDeviceMode == -1)
{
newDeviceMode = 0;
}
// Get Instance camera and mode
if (camera != null && camera is DirectShowCamera)
{
var dCam = camera as DirectShowCamera;
// Store Instance mode to reset if new mode fails
var instanceDeviceNumber = dCam.DeviceNumber;
var instanceDeviceMode = dCam.DeviceMode;
// Dont init the same device & mode twice..
if (instanceDeviceNumber == newDeviceNumber &&
instanceDeviceMode == newDeviceMode &&
dCam.HasValidGraph)
{
initializeNew = false;
}
}
// Specific deviceMode (e.g. 800x600 @ 30fps)
if (camera == null || newDeviceMode > -1)
{
if (initializeNew)
{
if (camera != null)
{
camera.Stop();
camera.Cleanup();
}
}
else
{
// No changes, just return
return;
}
}
// Specific configuration
localCam = new DirectShowCamera(
DirectShowDevices.Instance.Cameras[newDeviceNumber].DirectshowDevice,
newDeviceNumber,
newDeviceMode,
DirectShowDevices.Instance.Cameras[newDeviceNumber].SupportedSizesAndFPS[newDeviceMode].FPS,
DirectShowDevices.Instance.Cameras[newDeviceNumber].SupportedSizesAndFPS[newDeviceMode].Width,
DirectShowDevices.Instance.Cameras[newDeviceNumber].SupportedSizesAndFPS[newDeviceMode].Height);
// If last set camera failed, try default mode
if (localCam.HasValidGraph == false) // No specific deviceMode
{
localCam.Cleanup();
localCam = new DirectShowCamera(
DirectShowDevices.Instance.Cameras[newDeviceNumber].DirectshowDevice,
newDeviceNumber,
0,
0,
0,
0);
}
// If this is already occupied by another application and there
// are more than one camera connected, try the next one.
if (localCam.HasValidGraph == false && DirectShowDevices.Instance.Cameras.Count() > 1)
{
localCam.Cleanup();
localCam = new DirectShowCamera(
DirectShowDevices.Instance.Cameras[1].DirectshowDevice, 1, 0, 0, 0, 0);
}
// Finally, if running set this.camera to localCam
if (localCam.HasValidGraph)
{
localCam.IsSupportingROI = false;
// Switch
camera = localCam;
camera.Initialize();
camera.Start();
// Trigger global command, signal that a new camera has been started
// Listners for OnImage event has to re-subscribe
GTCommons.GTCommands.Instance.Camera.CameraChange();
}
else
{
// Failed, start previous camera/mode again
camera.Start();
}
}
catch (Exception)
{
//ErrorLogger.ProcessException(ex, false);
}
}
