public ScreenGrabberWindowsCapture(MonitorInfo screen) : base(screen)
{
Application.Current.Dispatcher.Invoke(() =>
{
var device = WindowsCaptureHelper.CreateDirect3DDeviceFromSharpDXDevice(new SharpDX.Direct3D11.Device(DriverType.Hardware, DeviceCreationFlags.BgraSupport));
_d3dDevice = WindowsCaptureHelper.CreateSharpDXDevice(device);
var item = WindowsCaptureHelper.CreateItemForMonitor(Screen.HMon);
var factory = new Factory2();
var description = new SwapChainDescription1
{
Width = item.Size.Width,
Height = item.Size.Height,
Format = Format.B8G8R8A8_UNorm,
Stereo = false,
SampleDescription = new SampleDescription
{
Count = 1,
Quality = 0
},
Usage = Usage.RenderTargetOutput,
BufferCount = 2,
Scaling = Scaling.Stretch,
SwapEffect = SwapEffect.FlipSequential,
AlphaMode = AlphaMode.Premultiplied,
Flags = SwapChainFlags.None
};
_swapChain = new SwapChain1(factory, _d3dDevice, ref description);
_framePool = Direct3D11CaptureFramePool.Create(device, DirectXPixelFormat.B8G8R8A8UIntNormalized, 2, item.Size);
_session = _framePool.CreateCaptureSession(item);
_session.IsCursorCaptureEnabled = false;
_swapChain.ResizeBuffers(2, item.Size.Width, item.Size.Height, Format.B8G8R8A8_UNorm, SwapChainFlags.None);
_screenTexture = new Texture2D(_d3dDevice, new Texture2DDescription
{
CpuAccessFlags = CpuAccessFlags.Read,
BindFlags = BindFlags.None,
Format = Format.B8G8R8A8_UNorm,
Width = item.Size.Width,
Height = item.Size.Height,
OptionFlags = ResourceOptionFlags.None,
MipLevels = 1,
ArraySize = 1,
SampleDescription = { Count = 1, Quality = 0 },
Usage = ResourceUsage.Staging
});
_framePool.FrameArrived += OnFrameArrived;
_session.StartCapture();
});
}
private void OnFrameArrived(Direct3D11CaptureFramePool sender, object args)
{
using (var frame = sender.TryGetNextFrame())
using (var bitmap = WindowsCaptureHelper.CreateSharpDXTexture2D(frame.Surface))
{
_d3dDevice.ImmediateContext.CopyResource(bitmap, _screenTexture);
var mapSource = _d3dDevice.ImmediateContext.MapSubresource(_screenTexture, 0, MapMode.Read, MapFlags.None);
CopyFromMapSource(mapSource);
_d3dDevice.ImmediateContext.UnmapSubresource(_screenTexture, 0);
}
}
