private void StartCapture()
{
mCapHwnd = capCreateCaptureWindowA("WebCap", WS_VISIBLE | WS_CHILD, 0, 0, this.pictureBox1.Width, this.pictureBox1.Height, this.pictureBox1.Handle.ToInt32(), 0);
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;
// connect to the capture device
Application.DoEvents();
SendMessage(mCapHwnd, WM_CAP_CONNECT, 0, 0);
SendMessage(mCapHwnd, WM_CAP_SET_PREVIEWRATE, 66, 0); //66
SendMessage(mCapHwnd, WM_CAP_SET_PREVIEW, 1, 0);
SendMessage(mCapHwnd, WM_CAP_DLG_VIDEOCOMPRESSION, 0, 0);
SendMessage2(mCapHwnd, WM_CAP_SET_SEQUENCE_SETUP, new IntPtr(Marshal.SizeOf(CaptureParams)), ref CaptureParams);
DoIt();
}
public WebCam(System.Windows.Forms.PictureBox preview)
{
ClearMem();
cpParams = new CAPTUREPARMS();
vsCallback = new VideoStreamCallback(CallbackVideoStream);
hPrevideWindow = capCreateCaptureWindow("picCam", WS_VISIBLE | WS_CHILD, 0, 0, preview.Width, preview.Height, preview.Handle, 0);
SendMessage(hPrevideWindow, WM_CAP_DRIVER_CONNECT, IntPtr.Zero, IntPtr.Zero);
SendMessage(hPrevideWindow, WM_CAP_DRIVER_CONNECT, IntPtr.Zero, IntPtr.Zero);
SendMessage(hPrevideWindow, WM_CAP_SET_PREVIEWRATE, new IntPtr(100), IntPtr.Zero);
SendMessage(hPrevideWindow, WM_CAP_DRIVER_CONNECT, new IntPtr(1), IntPtr.Zero);
SendMessage(hPrevideWindow, WM_CAP_DRIVER_CONNECT, new IntPtr(1), IntPtr.Zero);
IntPtr lParam = Marshal.AllocHGlobal(Marshal.SizeOf(cpParams));
if (SendMessage(hPrevideWindow, WM_CAP_GET_SEQUENCE_SETUP, new IntPtr(Marshal.SizeOf(cpParams)), lParam) != IntPtr.Zero)
{
cpParams = Marshal.PtrToStructure <CAPTUREPARMS>(lParam);
cpParams.fYield = 1;
cpParams.fAbortLeftMouse = 0;
cpParams.fAbortRightMouse = 0;
Marshal.StructureToPtr(cpParams, lParam, true);
}
Marshal.FreeHGlobal(lParam);
lParam = Marshal.AllocHGlobal(Marshal.SizeOf(bmiVideoFormat));
if (SendMessage(hPrevideWindow, WM_CAP_GET_VIDEOFORMAT, new IntPtr(Marshal.SizeOf(bmiVideoFormat)), lParam) != IntPtr.Zero)
{
bmiVideoFormat.bmiHeader = Marshal.PtrToStructure <BITMAPINFOHEADER>(lParam);
PictureData = new byte[bmiVideoFormat.bmiHeader.biSizeImage - 1];
}
Marshal.FreeHGlobal(lParam);
}
public static extern int SendMessage2(int webcam1, int Msg, IntPtr wParam, ref CAPTUREPARMS lParam);
public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPTUREPARMS lParam);
public static extern bool SendMessage(IntPtr hWnd, int wMsg, int wParam, ref CAPTUREPARMS lParam);
/// <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();
}
