public CaptureFrameWait(IDirect3DDevice device, Func <GraphicsCaptureItem> itemFactory)
{
this.device = device;
this.d3dDevice = Direct3D11Helper.CreateSharpDXDevice(device);
this.multithread = d3dDevice.QueryInterface <SharpDX.Direct3D11.Multithread>();
this.multithread.SetMultithreadProtected(true);
this.frameEvent = new ManualResetEvent(false);
this.closedEvent = new ManualResetEvent(false);
this.events = new[] { closedEvent, frameEvent };
this.itemFactory = itemFactory;
this.CurrentItem = this.itemFactory();
InitializeBlankTexture(this.CurrentItem.Size);
InitializeCapture();
}
public SurfaceWithInfo WaitForNewFrame()
{
// Let's get a fresh one.
this.currentFrame?.Dispose();
this.frameEvent.Reset();
var signaledEvent = this.events[WaitHandle.WaitAny(this.events)];
if (signaledEvent == this.closedEvent)
{
this.CleanupItem();
return(null);
}
using var multithreadLock = new MultithreadLock(this.multithread);
using var sourceTexture = Direct3D11Helper.CreateSharpDXTexture2D(this.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(this.d3dDevice, description);
var width = Math.Clamp(this.currentFrame.ContentSize.Width, 0, this.currentFrame.Surface.Description.Width);
var height = Math.Clamp(this.currentFrame.ContentSize.Height, 0, this.currentFrame.Surface.Description.Height);
var region = new SharpDX.Direct3D11.ResourceRegion(0, 0, 0, width, height, 1);
this.d3dDevice.ImmediateContext.CopyResource(blankTexture, copyTexture);
this.d3dDevice.ImmediateContext.CopySubresourceRegion(sourceTexture, 0, region, copyTexture, 0);
var result = new SurfaceWithInfo
{
SystemRelativeTime = this.currentFrame.SystemRelativeTime,
Surface = Direct3D11Helper.CreateDirect3DSurfaceFromSharpDXTexture(copyTexture)
};
return(result);
}
