public async Task <SoftwareBitmap> GetCaptureAsync()
{
var d2d = swapChain.GetBackBuffer <SharpDX.Direct3D11.Texture2D>(0);
var frame = Direct3D11Helper.CreateDirect3DSurfaceFromSharpDXTexture(d2d);
return(await SoftwareBitmap.CreateCopyFromSurfaceAsync(frame));
}
private DirectXVideoSample?GetNextFrame()
{
currentFrame?.Dispose();
frameEvent.Reset();
var signaledEvent = events[WaitHandle.WaitAny(events)];
if (signaledEvent == closedEvent)
{
// Safe to cleanup non-persistent resources as this method will return and the code below no longer references them
canCleanupNonPersistentResourcesEvent.Set();
return(null);
}
using (new MultithreadLock(multithread))
{
if (currentFrame == null)
{
return(null);
}
// Copy the captured frame from the framepool to a useable texture
using var sourceTexture = Direct3D11Helper.CreateSharpDXTexture2D(currentFrame.Surface);
if (sourceTexture == null)
{
return(null);
}
var description = sourceTexture.Description;
description.Usage = ResourceUsage.Default;
description.BindFlags = BindFlags.ShaderResource | BindFlags.RenderTarget;
description.CpuAccessFlags = CpuAccessFlags.None;
description.OptionFlags = ResourceOptionFlags.None;
using var copyTexture = new Texture2D(sharpDXDevice, description);
var width = Math.Clamp(currentFrame.ContentSize.Width, 0, currentFrame.Surface.Description.Width);
var height = Math.Clamp(currentFrame.ContentSize.Height, 0, currentFrame.Surface.Description.Height);
var region = new ResourceRegion(0, 0, 0, width, height, 1);
sharpDXDevice.ImmediateContext.CopyResource(blankTexture, copyTexture);
sharpDXDevice.ImmediateContext.CopySubresourceRegion(sourceTexture, 0, region, copyTexture, 0);
var surface = Direct3D11Helper.CreateDirect3DSurfaceFromSharpDXTexture(copyTexture);
if (surface == null)
{
return(null);
}
return(new DirectXVideoSample
{
Surface = surface
});
}
}