private void Application_SlideShowBegin(SlideShowWindow Wn)
{
if (!PresentationToNDIAddIn.Properties.Settings.Default.NDIDynamic)
{
return;
}
_window = Wn;
_wasFullscreenBefore = IsFullscreen;
_xOrig = Wn.Presentation.SlideMaster.Width;
_yOrig = Wn.Presentation.SlideMaster.Height;
_device = Direct3D11Helper.CreateDevice(!PresentationToNDIAddIn.Properties.Settings.Default.UseHw);
_d3dDevice = Direct3D11Helper.CreateSharpDXDevice(_device);
_factory = new Factory2();
_item = GetItem();
CreateCaptureItemDependendStuff();
_ndiSender = new Thread(SendNdi)
{
Priority = ThreadPriority.Normal, Name = "DynamicNdiSenderThread", IsBackground = true
};
_ndiSender.Start();
}
#pragma warning restore CS8618 // Non-nullable field is uninitialized. Consider declaring as nullable.
#endregion
#region Initialization
private void InitializeDevices()
{
var createdDevice = Direct3D11Helper.CreateDevice();
device = createdDevice ?? throw new Exception("Failed to create Direct3D device.");
var createdSharpDXDevice = Direct3D11Helper.CreateSharpDXDevice(device);
sharpDXDevice = createdSharpDXDevice ?? throw new Exception("Failed to create SharpDX device.");
multithread = sharpDXDevice.QueryInterface <Multithread>();
multithread.SetMultithreadProtected(true);
}
public BasicCapture(IDirect3DDevice d, GraphicsCaptureItem i)
{
item = i;
device = d;
d3dDevice = Direct3D11Helper.CreateSharpDXDevice(device);
var size = item.Size;
if (size.Height == 0 || size.Width == 0)
{
size = new SizeInt32()
{
Height = 1, Width = 1
}
}
;
var dxgiFactory = new SharpDX.DXGI.Factory2();
var description = new SharpDX.DXGI.SwapChainDescription1()
{
Width = size.Width,
Height = size.Height,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
Stereo = false,
SampleDescription = new SharpDX.DXGI.SampleDescription()
{
Count = 1,
Quality = 0
},
Usage = SharpDX.DXGI.Usage.RenderTargetOutput,
BufferCount = 2,
Scaling = SharpDX.DXGI.Scaling.Stretch,
SwapEffect = SharpDX.DXGI.SwapEffect.FlipSequential,
AlphaMode = SharpDX.DXGI.AlphaMode.Premultiplied,
Flags = SharpDX.DXGI.SwapChainFlags.None
};
swapChain = new SharpDX.DXGI.SwapChain1(dxgiFactory, d3dDevice, ref description);
framePool = Direct3D11CaptureFramePool.Create(
device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
size);
session = framePool.CreateCaptureSession(i);
lastSize = size;
framePool.FrameArrived += OnFrameArrived;
}
public BasicCapture(IDirect3DDevice d, GraphicsCaptureItem i)
{
item = i;
device = d;
d3dDevice = Direct3D11Helper.CreateSharpDXDevice(device);
wicFactory = new ImagingFactory();
// 建立DirectX图形基础设施工厂（DirectX Graphics Infrastructure，DXGI）
var dxgiFactory = new SharpDX.DXGI.Factory2();
// 建立交换链
var description = new SharpDX.DXGI.SwapChainDescription1()
{
Width = item.Size.Width,
Height = item.Size.Height,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
Stereo = false, // 立体声
SampleDescription = new SharpDX.DXGI.SampleDescription()
{
Count = 1,
Quality = 0
},
Usage = SharpDX.DXGI.Usage.RenderTargetOutput,
BufferCount = 2,
Scaling = SharpDX.DXGI.Scaling.Stretch,
SwapEffect = SharpDX.DXGI.SwapEffect.FlipSequential, // 连续翻转
AlphaMode = SharpDX.DXGI.AlphaMode.Premultiplied, // 预乘
Flags = SharpDX.DXGI.SwapChainFlags.None
};
swapChain = new SharpDX.DXGI.SwapChain1(dxgiFactory, d3dDevice, ref description);
framePool = Direct3D11CaptureFramePool.Create(
device,
Windows.Graphics.DirectX.DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
i.Size);
// 创建捕获会话
session = framePool.CreateCaptureSession(i);
// 记录最后帧尺寸
lastSize = i.Size;
// 帧已到达事件添加
framePool.FrameArrived += OnFrameArrived;
}
public ScreenCapture(GraphicsCaptureItem i)
{
item = i;
device = Direct3D11Helper.CreateDevice();
d3dDevice = Direct3D11Helper.CreateSharpDXDevice(device);
SizeInt32 correctedSize = item.Size;
correctedSize.Width = correctedSize.Width / 8 * 8;
correctedSize.Height = correctedSize.Height / 8 * 8;
var dxgiFactory = new Factory2();
var description = new SwapChainDescription1()
{
Width = correctedSize.Width,
Height = correctedSize.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(dxgiFactory, d3dDevice, ref description);
framePool = Direct3D11CaptureFramePool.Create(
device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
correctedSize);
session = framePool.CreateCaptureSession(i);
lastSize = correctedSize;
framePool.FrameArrived += OnFrameArrived;
}
public BasicCapture(IDirect3DDevice d, GraphicsCaptureItem i)
{
__item = i;
__device = d;
__d3dDevice = Direct3D11Helper.CreateSharpDXDevice(__device);
var dxgiFactory = new SharpDX.DXGI.Factory2();
var description = new SharpDX.DXGI.SwapChainDescription1()
{
Width = __item.Size.Width,
Height = __item.Size.Height,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
Stereo = false,
SampleDescription = new SharpDX.DXGI.SampleDescription()
{
Count = 1,
Quality = 0
},
Usage = SharpDX.DXGI.Usage.RenderTargetOutput,
BufferCount = 2,
Scaling = SharpDX.DXGI.Scaling.Stretch,
SwapEffect = SharpDX.DXGI.SwapEffect.FlipSequential,
AlphaMode = SharpDX.DXGI.AlphaMode.Premultiplied,
Flags = SharpDX.DXGI.SwapChainFlags.None
};
__swapChain = new SharpDX.DXGI.SwapChain1(dxgiFactory, __d3dDevice, ref description);
__framePool = Direct3D11CaptureFramePool.Create(
__device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
2,
i.Size);
__session = __framePool.CreateCaptureSession(i);
__lastSize = i.Size;
// Disable mouse cursor to be visible
__session.IsCursorCaptureEnabled = false;
__framePool.FrameArrived += OnFrameArrived;
}
public GraphicsItemD3DImage()
{
if (App.Current.MainWindow != null)
{
IntPtr window = new WindowInteropHelper(App.Current.MainWindow).Handle;
var presentparams = new SharpDX.Direct3D9.PresentParameters
{
Windowed = true,
SwapEffect = SharpDX.Direct3D9.SwapEffect.Discard,
DeviceWindowHandle = window,
PresentationInterval = PresentInterval.Immediate,
};
const CreateFlags deviceFlags = CreateFlags.HardwareVertexProcessing | CreateFlags.Multithreaded | CreateFlags.FpuPreserve;
this.direct3d = new Direct3DEx();
this.device = Direct3D11Helper.CreateDevice();
this.d3dDevice = Direct3D11Helper.CreateSharpDXDevice(this.device);
this.d9device = new DeviceEx(this.direct3d, 0, DeviceType.Hardware, IntPtr.Zero, deviceFlags, presentparams);
this.IsFrontBufferAvailableChanged += this.GraphicItemD3DImageIsFrontBufferAvailableChanged;
}
}
static void Main(string[] args)
{
// Get a capture item that represents the primary monitor
var monitor = MonitorFromWindow(GetDesktopWindow(), MONITOR_DEFAULTTOPRIMARY);
var item = CaptureHelper.CreateItemForMonitor(monitor);
var size = item.Size;
// Setup D3D
var device = Direct3D11Helper.CreateDevice();
var d3dDevice = Direct3D11Helper.CreateSharpDXDevice(device);
var d3dContext = d3dDevice.ImmediateContext;
// Create our staging texture
var description = new SharpDX.Direct3D11.Texture2DDescription
{
Width = size.Width,
Height = size.Height,
MipLevels = 1,
ArraySize = 1,
Format = SharpDX.DXGI.Format.B8G8R8A8_UNorm,
SampleDescription = new SharpDX.DXGI.SampleDescription()
{
Count = 1,
Quality = 0
},
Usage = SharpDX.Direct3D11.ResourceUsage.Staging,
BindFlags = SharpDX.Direct3D11.BindFlags.None,
CpuAccessFlags = SharpDX.Direct3D11.CpuAccessFlags.Read,
OptionFlags = SharpDX.Direct3D11.ResourceOptionFlags.None
};
var stagingTexture = new SharpDX.Direct3D11.Texture2D(d3dDevice, description);
// Setup capture
var framePool = Direct3D11CaptureFramePool.CreateFreeThreaded(
device,
DirectXPixelFormat.B8G8R8A8UIntNormalized,
1,
size);
var session = framePool.CreateCaptureSession(item);
var imageNum = 0;
var endEvent = new ManualResetEvent(false);
framePool.FrameArrived += (sender, a) =>
{
using (var frame = sender.TryGetNextFrame())
using (var bitmap = Direct3D11Helper.CreateSharpDXTexture2D(frame.Surface))
{
// Copy to our staging texture
d3dContext.CopyResource(bitmap, stagingTexture);
// Map our texture and get the bits
var mapped = d3dContext.MapSubresource(stagingTexture, 0, SharpDX.Direct3D11.MapMode.Read, SharpDX.Direct3D11.MapFlags.None);
var source = mapped.DataPointer;
var sourceStride = mapped.RowPitch;
// Allocate some memory to hold our copy
var bytes = new byte[size.Width * size.Height * 4]; // 4 bytes per pixel
unsafe
{
fixed(byte *bytesPointer = bytes)
{
var dest = (IntPtr)bytesPointer;
var destStride = size.Width * 4;
for (int i = 0; i < size.Height; i++)
{
SharpDX.Utilities.CopyMemory(dest, source, destStride);
source = IntPtr.Add(source, sourceStride);
dest = IntPtr.Add(dest, destStride);
}
}
}
// Don't forget to unmap when you're done!
d3dContext.UnmapSubresource(stagingTexture, 0);
// Encode it
// NOTE: Waiting here will stall the capture
EncodeBytesAsync($"image{imageNum}.png", size.Width, size.Height, bytes).Wait();
imageNum++;
if (imageNum > 10)
{
framePool.Dispose();
session.Dispose();
endEvent.Set();
}
}
};
// Start the capture and wait
session.StartCapture();
endEvent.WaitOne();
}
