/// <summary>
/// Duplicates the output of the specified monitor on the specified graphics adapter.
/// </summary>
/// <param name="whichGraphicsCardAdapter">The adapter which contains the desired outputs.</param>
/// <param name="whichOutputDevice">The output device to duplicate (i.e. monitor). Begins with zero, which seems to correspond to the primary monitor.</param>
public DesktopDuplicator(int whichGraphicsCardAdapter, int whichOutputDevice, VSyncLevel vSync)
{
this.vSync = vSync;
this.mWhichOutputDevice = whichOutputDevice;
Adapter1 adapter;
try
{
adapter = new Factory1().GetAdapter1(whichGraphicsCardAdapter);
}
catch (SharpDXException)
{
throw new DesktopDuplicationException("Could not find the specified graphics card adapter.");
}
this.mDevice = new Device(adapter, DeviceCreationFlags.SingleThreaded | DeviceCreationFlags.PreventAlteringLayerSettingsFromRegistry);
Output output;
try
{
output = adapter.GetOutput(whichOutputDevice);
}
catch (SharpDXException)
{
throw new DesktopDuplicationException("Could not find the specified output device.");
}
outputStream = output.QueryInterface <Output1>();
this.mOutputDescription = output.Description;
this.mTextureDescription = new Texture2DDescription()
{
CpuAccessFlags = CpuAccessFlags.Read,
BindFlags = BindFlags.None,
Format = Format.B8G8R8A8_UNorm,
Width = this.mOutputDescription.DesktopBounds.Right,
Height = this.mOutputDescription.DesktopBounds.Bottom,
OptionFlags = ResourceOptionFlags.None,
MipLevels = 1,
ArraySize = 1,
SampleDescription = { Count = 1, Quality = 0 },
Usage = ResourceUsage.Staging
};
try
{
this.mDeskDuplication = outputStream.DuplicateOutput(mDevice);
}
catch (SharpDXException err)
{
if (err.ResultCode.Code == SharpDX.DXGI.ResultCode.NotCurrentlyAvailable.Result.Code)
{
throw new DesktopDuplicationException("There is already the maximum number of applications using the Desktop Duplication API running, please close one of the applications and try again.");
}
}
}
/// <summary>
/// Duplicates the output of the specified monitor.
/// </summary>
/// <param name="whichMonitor">The output device to duplicate (i.e. monitor). Begins with zero, which seems to correspond to the primary monitor.</param>
public DesktopDuplicator(int whichMonitor, VSyncLevel vSync)
: this(0, whichMonitor, vSync)
{
}