Investigate WindowsGraphicsCapture API

[nbrochu]

As discovered by using OBS Studio, there is a new Window API for screen capture that has great extra features like capturing windows even if they are occluded or moved.

Investigate WindowsGraphicsCapture to determine if:

• It can be hooked into by Python
• It has good performance
• It is compatible with the existing D3DShot API

[nbrochu]

So far, I see 2 possible entry points for this:

1. Wait for the WinRT project to make progress in their Python bridge

This would allow access to Windows Runtime APIs directly from Python so Windows.Graphics.Capture is exposed

Relevant issue to track: microsoft/xlang#634

2. Try to wrap libobs-winrt.dll with ctypes

Seems to have the required exported functions

[truongdo]

@nbrochu do you have any update on this issue?