private void ProcessFrame(DesktopFrame frame)
{
// Get the desktop capture texture
var mapSource = _device.ImmediateContext.MapSubresource(_desktopImageTexture, 0, MapMode.Read, MapFlags.None);
FinalImage = new Bitmap(
_outputDescription.DesktopBounds.GetWidth(),
_outputDescription.DesktopBounds.GetHeight(),
PixelFormat.Format32bppRgb);
var boundsRect = new System.Drawing.Rectangle(0, 0,
_outputDescription.DesktopBounds.GetWidth(), _outputDescription.DesktopBounds.GetHeight());
// Copy pixels from screen capture Texture to GDI bitmap
var mapDest = FinalImage.LockBits(boundsRect, ImageLockMode.WriteOnly, FinalImage.PixelFormat);
var sourcePtr = mapSource.DataPointer;
var destPtr = mapDest.Scan0;
for (int y = 0; y < _outputDescription.DesktopBounds.GetHeight(); y++)
{
// Copy a single line
Utilities.CopyMemory(destPtr, sourcePtr, _outputDescription.DesktopBounds.GetWidth() * 4);
// Advance pointers
sourcePtr = IntPtr.Add(sourcePtr, mapSource.RowPitch);
destPtr = IntPtr.Add(destPtr, mapDest.Stride);
}
// Release source and dest locks
FinalImage.UnlockBits(mapDest);
_device.ImmediateContext.UnmapSubresource(_desktopImageTexture, 0);
frame.DesktopImage = FinalImage;
}
private Bitmap ProcessFrame(Bitmap reusableImage)
{
// Get the desktop capture texture
var mapSource = _device.ImmediateContext.MapSubresource(_stagingTexture, 0, MapMode.Read, MapFlags.None);
Bitmap image;
var width = _outputDescription.DesktopBounds.GetWidth() / scalingFactor;
var height = _outputDescription.DesktopBounds.GetHeight() / scalingFactor;
if (reusableImage != null && reusableImage.Width == width && reusableImage.Height == height)
{
image = reusableImage;
}
else
{
image = new Bitmap(width, height, PixelFormat.Format32bppRgb);
}
var boundsRect = new System.Drawing.Rectangle(0, 0, width, height);
// Copy pixels from screen capture Texture to GDI bitmap
var mapDest = image.LockBits(boundsRect, ImageLockMode.WriteOnly, image.PixelFormat);
var sourcePtr = mapSource.DataPointer;
var destPtr = mapDest.Scan0;
if (mapSource.RowPitch == mapDest.Stride)
{
//fast copy
Utilities.CopyMemory(destPtr, sourcePtr, height * mapDest.Stride);
}
else
{
//safe copy
for (int y = 0; y < height; y++)
{
// Copy a single line
Utilities.CopyMemory(destPtr, sourcePtr, width * 4);
// Advance pointers
sourcePtr = IntPtr.Add(sourcePtr, mapSource.RowPitch);
destPtr = IntPtr.Add(destPtr, mapDest.Stride);
}
}
// Release source and dest locks
image.UnlockBits(mapDest);
_device.ImmediateContext.UnmapSubresource(_stagingTexture, 0);
return(image);
}
