private void _updateTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
Bitmap screenshot = new Bitmap(Screen.Bounds.Width, Screen.Bounds.Height, PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(screenshot))
graphics.CopyFromScreen(Screen.Bounds.X, Screen.Bounds.Y, 0, 0, Screen.Bounds.Size, CopyPixelOperation.SourceCopy);
if (_updatePreview)
{
if (_previewImage == null)
{
_previewImage = new Bitmap(screenshot, new Size(160, 160));
}
else
{
lock (_previewImage)
{
_previewImage?.Dispose();
_previewImage = new Bitmap(screenshot, new Size(160, 160));
}
}
_updatePreview = false;
}
FrameCaptured?.Invoke(this, new FrameCapturedEventArgs(screenshot));
}
void Proc()
{
var viewport = Viewport;
if (buffer == null || buffer.Width != viewport.Width || buffer.Height != viewport.Height)
{
graphic?.Dispose();
buffer?.Dispose();
buffer = new Bitmap((int)viewport.Width, (int)viewport.Height, PixelFormat.Format32bppArgb);
graphic = Graphics.FromImage(buffer);
}
graphic.CopyFromScreen((int)viewport.X, (int)viewport.Y, 0, 0, new System.Drawing.Size((int)viewport.Width, (int)viewport.Height), CopyPixelOperation.SourceCopy);
var mat = OpenCvSharp.Extensions.BitmapConverter.ToMat(buffer);
var arg = new FrameArgs()
{
Frame = mat
};
FrameCaptured?.Invoke(this, arg);
if (arg.DisposeFrame)
{
mat.Dispose();
}
if (arg.Break)
{
Task.Factory.StartNew(() =>
{
Stop();
}).Wait();
}
}
private void CaptureLoop()
{
while (!_taskStopToken)
{
_windowCapture.PerformCapture();
Interlocked.Increment(ref _frameCounter);
FrameCaptured?.Invoke(this, new DotaOcvWindowCaptureFrameCapturedEventArgs(_windowCapture));
}
}
/// <summary>
/// Constructor of LPREngine instance
/// </summary>
public VideoCapture(FrameCaptured frameCapturedCallback, CaptureError captureErrorCallback, object customObject)
{
this.frameCapturedCallback = frameCapturedCallback;
this.captureErrorCallback = captureErrorCallback;
this.navive_frameCapturedCallback = new DTKLPR4.FrameCapturedNative(OnFrameCapturedNative);
this.navive_captureErrorCallback = new DTKLPR4.CaptureErrorNative(OnCaptureErrorNative);
this.customObject = customObject;
this.hVideoCapture = DTKLPR4.VideoCapture_Create(
Marshal.GetFunctionPointerForDelegate(navive_frameCapturedCallback),
Marshal.GetFunctionPointerForDelegate(navive_captureErrorCallback),
IntPtr.Zero);
}
private void OnFrameCaptured(IntPtr hWnd, IntPtr hRgb, BITMAPINFOHEADER bitmapInfo, IntPtr bitmapBits,
IntPtr userData)
{
lock (_handlerLock)
{
var e = new RgbEasyFrameCapturedEventArgs(hWnd, this, bitmapInfo, bitmapBits, userData);
FrameCaptured?.Invoke(this, e);
if (e.PreventDefaultHandler)
{
return;
}
DefaultFrameCapturedHandler();
}
}
void XferNotify(object sender, SapXferNotifyEventArgs argsNotify)
{
TransferNotifyEventArgs transferNotifyEventArgs = new TransferNotifyEventArgs(argsNotify);
FrameCaptured?.Invoke(transferNotifyEventArgs);
// instance.FrameCaptured?.Invoke(new TransferNotifyEventArgs(argsNotify));
//GrabDemoDlg GrabDlg = argsNotify.Context as GrabDemoDlg;
//// If grabbing in trash buffer, do not display the image, update the
//// appropriate number of frames on the status bar instead
//if (argsNotify.Trash)
// GrabDlg.Invoke(new DisplayFrameAcquired(GrabDlg.ShowFrameNumber), argsNotify.EventCount, true);
//// Refresh view
//else
//{
// GrabDlg.Invoke(new DisplayFrameAcquired(GrabDlg.ShowFrameNumber), argsNotify.EventCount, false);
// GrabDlg.m_View.Show();
//}
}
private void OnElapsed(object sender, ElapsedEventArgs e)
{
_graphics.FillRectangle(GetRandomBrush(), _random.Next(0, _testFrame.Width), _random.Next(0, _testFrame.Height), _random.Next(20, 70), _random.Next(20, 70));
FrameCaptured?.Invoke(this, new FrameCapturedEventArgs((Image)_testFrame.Clone()));
}
public void OnImageGrabbed(Image image)
{
FrameCaptured?.Invoke(this, new FrameCapturedEventArgs(image));
}
public void RaiseFrameCapturedEvent(CameraEventArgs args)
{
FrameCaptured?.Invoke(args);
}
void FrameCapturedHandler(CVPixelBuffer buffer)
{
FrameCaptured?.Invoke(this, new CVPixelBufferCapturedEvent(buffer));
}
private void OnImageGrabbed(object sender, EventArgs e)
{
_capture.Retrieve(_currentFrame);
FrameCaptured?.Invoke(this, new FrameCapturedEventArgs(_currentFrame.Bitmap));
}
