public CaptureFrameWait(
IDirect3DDevice device,
GraphicsCaptureItem item,
SizeInt32 size)
{
_device = device;
_d3dDevice = Direct3D11Helpers.CreateSharpDXDevice(device);
_multithread = _d3dDevice.QueryInterface <SharpDX.Direct3D11.Multithread>();
_multithread.SetMultithreadProtected(true);
_item = item;
_frameEvent = new ManualResetEvent(false);
_closedEvent = new ManualResetEvent(false);
_events = new[] { _closedEvent, _frameEvent };
InitializeBlankTexture(size);
InitializeCapture(size);
}
public SurfaceWithInfo WaitForNewFrame()
{
// Let's get a fresh one.
_currentFrame?.Dispose();
_frameEvent.Reset();
var signaledEvent = _events[WaitHandle.WaitAny(_events)];
if (signaledEvent == _closedEvent)
{
Cleanup();
return(null);
}
var result = new SurfaceWithInfo();
result.SystemRelativeTime = _currentFrame.SystemRelativeTime;
using (var multithreadLock = new MultithreadLock(_multithread))
using (var sourceTexture = Direct3D11Helpers.CreateSharpDXTexture2D(_currentFrame.Surface))
{
var description = sourceTexture.Description;
description.Usage = SharpDX.Direct3D11.ResourceUsage.Default;
description.BindFlags = SharpDX.Direct3D11.BindFlags.ShaderResource | SharpDX.Direct3D11.BindFlags.RenderTarget;
description.CpuAccessFlags = SharpDX.Direct3D11.CpuAccessFlags.None;
description.OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None;
using (var copyTexture = new SharpDX.Direct3D11.Texture2D(_d3dDevice, description))
{
var width = Helper.Clamp(_currentFrame.ContentSize.Width, 0, _currentFrame.Surface.Description.Width);
var height = Helper.Clamp(_currentFrame.ContentSize.Height, 0, _currentFrame.Surface.Description.Height);
var region = new SharpDX.Direct3D11.ResourceRegion(0, 0, 0, width, height, 1);
_d3dDevice.ImmediateContext.CopyResource(_blankTexture, copyTexture);
_d3dDevice.ImmediateContext.CopySubresourceRegion(sourceTexture, 0, region, copyTexture, 0);
result.Surface = Direct3D11Helpers.CreateDirect3DSurfaceFromSharpDXTexture(copyTexture);
}
}
return(result);
}
