/// <summary>
/// Stops the video capture
/// </summary>
public override void Stop()
{
// stop the timer
this.Tmr.Stop();
// disconnect from the video source
Application.DoEvents();
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DRIVER_DISCONNECT, DriverIndex, 0);
USER32.DestroyWindow(mCapHwnd);
base.Stop();
}
/// <summary>
/// Capture the next frame from the video feed
/// </summary>
private void Tmr_Tick(object sender, System.EventArgs e)
{
try
{
// pause the timer
this.Tmr.Stop();
// get the next frame;
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_GRAB_FRAME, 0, 0);
if (this.UseClipboard)
{
SetToClipBoard();
}
}
finally
{
// restart the timer
//Application.DoEvents();
this.Tmr.Start();
}
}
private void SetToClipBoard()
{
try
{
// copy the frame to the clipboard
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_EDIT_COPY, 0, 0);
//USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_FILE_SAVEAS, 0, @"e:\tmp\" + DateTime.Now.ToString("HHmmss"));
// paste the frame into the event args image
// get from the clipboard
IDataObject tempObj = Clipboard.GetDataObject();
IMageClipboard = (System.Drawing.Bitmap)tempObj.GetData(System.Windows.Forms.DataFormats.Bitmap);
// raise the event
if (ImageCaptured != null)
{
this.ImageCaptured(this, IMageClipboard.GetThumbnailImage(Width, Height, null, System.IntPtr.Zero));
}
Clipboard.Clear();
}
catch { }
}
public void ConfigVideoCompression()
{
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0);
}
public void ConfigVideoSource()
{
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DLG_VIDEOSOURCE, 0, 0);
}
public void ConfigVideoFormat()
{
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DLG_VIDEOFORMAT, 0, 0);
}
public void ConfigVideoDisplay()
{
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DLG_VIDEODISPLAY, 0, 0);
}
public void StartAvi()
{
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_SEQUENCE, 0, 0);
}
/// <summary>
/// Status de conexão da câmera
/// </summary>
//public bool Connected { get; set; }
#endregion
#region Start
/// <summary>
/// Starts the video capture
/// </summary>
/// <param name="FrameNumber">the frame number to start at.
/// Set to 0 to let the control allocate the frame number</param>
public override void Start()
{
#region for safety, call stop, just in case we are already running
this.Stop();
#endregion
#region setup a capture window
int Flags = 0;
if (!this.UseClipboard)
{
Flags = IMAGECAPTURE.WS_VISIBLE | IMAGECAPTURE.WS_CHILD;
}
mCapHwnd = AVICAP32.capCreateCaptureWindowA("WebCap",
Flags, 0, 0,
this.Width,
this.Height,
this.Control.Handle,
0
);
#endregion
#region connect to the capture device
Application.DoEvents();
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DRIVER_CONNECT, DriverIndex, 0);
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_SET_PREVIEWRATE, 66, 0); //66
USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_SET_PREVIEW, 1, 0);
//USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_DLG_VIDEOSOURCE, 0, 0);
//GetMCIDevice mci = new GetMCIDevice();
//int i =USER32.SendMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_GET_MCI_DEVICE, Marshal.SizeOf(mci), mci);
BITMAPINFO bInfo = new BITMAPINFO();
bInfo.bmiHeader = new BITMAPINFOHEADER();
bInfo.bmiHeader.biSize = (uint)Marshal.SizeOf(bInfo.bmiHeader);
bInfo.bmiHeader.biWidth = Width;
bInfo.bmiHeader.biHeight = Height;
bInfo.bmiHeader.biPlanes = 1;
bInfo.bmiHeader.biBitCount = 24; // bits per frame, 24 - RGB
USER32.SendBitmapMessage(mCapHwnd, IMAGECAPTURE.WM_CAP_SET_VIDEOFORMAT, Marshal.SizeOf(bInfo), ref bInfo);
CAPTUREPARMS CaptureParams = new CAPTUREPARMS();
CaptureParams.fYield = 1;
CaptureParams.fAbortLeftMouse = 0;
CaptureParams.fAbortRightMouse = 0;
CaptureParams.dwRequestMicroSecPerFrame = 66667;
CaptureParams.fMakeUserHitOKToCapture = 0;
CaptureParams.wPercentDropForError = 10;//10
CaptureParams.wChunkGranularity = 0;
CaptureParams.dwIndexSize = 324000;
CaptureParams.wNumVideoRequested = 10;
CaptureParams.wNumAudioRequested = 10;
CaptureParams.fCaptureAudio = 1;
CaptureParams.fMCIControl = 0; //0
CaptureParams.fStepMCIDevice = 0; //0
CaptureParams.dwMCIStartTime = 0;
CaptureParams.dwMCIStopTime = 0;
CaptureParams.fStepCaptureAt2x = 0;//0
CaptureParams.wStepCaptureAverageFrames = 5;
CaptureParams.dwAudioBufferSize = 10;
USER32.SendMessageA(mCapHwnd, IMAGECAPTURE.WM_CAP_SET_SEQUENCE_SETUP, new IntPtr(Marshal.SizeOf(CaptureParams)), CaptureParams);
//ConfigFormat();
#endregion
#region set the timer information
this.Tmr.Interval = TimeToCapture;
if (this.UseClipboard)
{
this.Tmr.Start();
}
#endregion
base.Start();
}
